Building Regulatory Networks with CyTargetLinker summarizes CyTargetLinker, a Cytoscape app that integrates regulatory interactions into network analysis. CyTargetLinker extracts regulatory interactions from multiple data sources called Regulatory Interaction Networks (RINs) and links them to an initial network. This allows visualization of how transcription factors, microRNAs, drugs, and other regulators interact with existing networks like pathways. CyTargetLinker provides flexible filtering and a user-friendly workflow to help biologists generate and analyze hypotheses about regulatory mechanisms involved in processes like breast cancer and DNA damage response. Future work will focus on supporting additional data sources and statistical outputs to analyze overlapping regulatory interactions.
Presentaion for NetBio SIG 2013 by Robin Haw, Scientific Associate and Outreach Coordinator, Ontario Institute for Cancer Research. “Reactome Knowledgebase and Functional Interaction (FI) Cytoscape Plugin”
National Resource for Networks Biology's TR&D Theme 1: In this theme, we will develop a series of tools and methodologies for conducting differential analyses of biological networks perturbed under multiple conditions. The novel algorithmic methodologies enable us to make use of high-throughput proteomic level data to recover biological networks under specific biological perturbations. The software tools developed in this project enable researchers to further predict, analyze, and visualize the effects of these perturbations and alterations, while enabling researchers to aggregate additional information regarding the known roles of the involved interactions and their participants.
Summary: ENViz performs enrichment analysis for pathways and gene ontology (GO) terms in matched datasets of multiple data types (e.g. gene expression and metabolites or miRNA), then visualizes results as a Cytoscape network that can be navigated to show data overlaid on pathways and GO DAGs.
Background: Modern genomic, metabolomics, and proteomic assays produce multiplexed measurements that characterize molecular composition and biological activity from complimentary angles. Integrative analysis of such measurements remains a challenge to life science and biomedical researchers. We present an enrichment network approach to jointly analyzing two types of sample matched datasets and systematic annotations, implemented as a plugin to the Cytoscape [1] network biology software platform.
Approach: ENViz analyses a primary dataset (e.g. gene expression) with respect to a ‘pivot’ dataset (e.g. miRNA expression, metabolomics or proteomics measurements) and primary data annotation (e.g. pathway or GO). For each pivot entity, we rank elements of the primary data based on the correlation to the pivot across all samples, and compute statistical enrichment of annotation sets in the top of this ranked list based on minimum hypergeometric statistics [2]. Significant results are represented as an enrichment network - a bipartite graph with nodes corresponding to pivot and annotation entities, and edges corresponding to pivot-annotation pairs with statistical enrichmentscores above the user defined threshold. Correlations of primary data and pivot data are visually overlaid on biological pathways for significant pivot-annotation pairs using the WikiPathways resource [3], and on gene ontology terms. Edges of the enrichment network may point to functionally relevant mechanisms. In [4], a significant association between miR-19a and the cell-cycle module was substantiated as an association to proliferation, validated using a high-throughput transfection assay. The figures below show a pathway enrichment network, with pathway nodes green and miRNAs gray (left), network view of the edge between Inflammatory Response Pathway and mir-337-5p (center), and GO enrichment network with red areas indicating high enrichment for immune response and metabolic processes (right).
The cBio Cancer Genomics Portal (http://cbioportal.org) is an open-access resource
for interactively exploring multidimensional cancer genomics data sets. It provides simple and intuitive integrated access to cancer genomics data, including copy number, mutation, mRNA and microRNA expression, methylation and protein and phosphoprotein data, on more than 5,000 tumor samples from 20 cancer studies (including 16 TCGA cancer types).
During the past year, we have added network visualization and analysis features to
the cBio Portal. These new features enable researchers to analyze genomic alterations in the context of known biological pathways and interaction networks, and to more easily mine data generated by the TCGA. A network of interest is derived from the Pathway Commons project, based on the query genes specified by the user. Multidimensional genomic data are overlaid onto each node of the network, highlighting the frequency of somatic mutation and copy number alteration (and optionally mRNA up/down-regulation). Users can manage the complexity of the network by filtering by total alteration frequency of genes or by type and source of the interactions. This provides an effective means of managing network complexity, while automatically highlighting those genes most directly relevant to the cancer type in question. In addition, drugs and drug target data can optionally be shown in relation to the network of interest. In this talk, we would like to illustrate the main network analysis features using data from the TCGA project. We will also discuss our future plans for the network view.
The NRNB has been funded as an NIGMS Biomedical Technology Research Resource since 2010. During the previous five-year period, NRNB investigators introduced a series of innovative methods for network biology including network-based biomarkers, network-based stratification of genomes, and automated inference of gene ontologies using network data. Over the next five years, we will seek to catalyze major phase transitions in how biological networks are represented and used, working across three broad themes: (1) From static to differential networks, (2) From descriptive to predictive networks, and (3) From flat to hierarchical networks bridging across scales. All of these efforts leverage and further support our growing stable of network technologies, including the popular Cytoscape network analysis infrastructure.
Presentaion for NetBio SIG 2013 by Robin Haw, Scientific Associate and Outreach Coordinator, Ontario Institute for Cancer Research. “Reactome Knowledgebase and Functional Interaction (FI) Cytoscape Plugin”
National Resource for Networks Biology's TR&D Theme 1: In this theme, we will develop a series of tools and methodologies for conducting differential analyses of biological networks perturbed under multiple conditions. The novel algorithmic methodologies enable us to make use of high-throughput proteomic level data to recover biological networks under specific biological perturbations. The software tools developed in this project enable researchers to further predict, analyze, and visualize the effects of these perturbations and alterations, while enabling researchers to aggregate additional information regarding the known roles of the involved interactions and their participants.
Summary: ENViz performs enrichment analysis for pathways and gene ontology (GO) terms in matched datasets of multiple data types (e.g. gene expression and metabolites or miRNA), then visualizes results as a Cytoscape network that can be navigated to show data overlaid on pathways and GO DAGs.
Background: Modern genomic, metabolomics, and proteomic assays produce multiplexed measurements that characterize molecular composition and biological activity from complimentary angles. Integrative analysis of such measurements remains a challenge to life science and biomedical researchers. We present an enrichment network approach to jointly analyzing two types of sample matched datasets and systematic annotations, implemented as a plugin to the Cytoscape [1] network biology software platform.
Approach: ENViz analyses a primary dataset (e.g. gene expression) with respect to a ‘pivot’ dataset (e.g. miRNA expression, metabolomics or proteomics measurements) and primary data annotation (e.g. pathway or GO). For each pivot entity, we rank elements of the primary data based on the correlation to the pivot across all samples, and compute statistical enrichment of annotation sets in the top of this ranked list based on minimum hypergeometric statistics [2]. Significant results are represented as an enrichment network - a bipartite graph with nodes corresponding to pivot and annotation entities, and edges corresponding to pivot-annotation pairs with statistical enrichmentscores above the user defined threshold. Correlations of primary data and pivot data are visually overlaid on biological pathways for significant pivot-annotation pairs using the WikiPathways resource [3], and on gene ontology terms. Edges of the enrichment network may point to functionally relevant mechanisms. In [4], a significant association between miR-19a and the cell-cycle module was substantiated as an association to proliferation, validated using a high-throughput transfection assay. The figures below show a pathway enrichment network, with pathway nodes green and miRNAs gray (left), network view of the edge between Inflammatory Response Pathway and mir-337-5p (center), and GO enrichment network with red areas indicating high enrichment for immune response and metabolic processes (right).
The cBio Cancer Genomics Portal (http://cbioportal.org) is an open-access resource
for interactively exploring multidimensional cancer genomics data sets. It provides simple and intuitive integrated access to cancer genomics data, including copy number, mutation, mRNA and microRNA expression, methylation and protein and phosphoprotein data, on more than 5,000 tumor samples from 20 cancer studies (including 16 TCGA cancer types).
During the past year, we have added network visualization and analysis features to
the cBio Portal. These new features enable researchers to analyze genomic alterations in the context of known biological pathways and interaction networks, and to more easily mine data generated by the TCGA. A network of interest is derived from the Pathway Commons project, based on the query genes specified by the user. Multidimensional genomic data are overlaid onto each node of the network, highlighting the frequency of somatic mutation and copy number alteration (and optionally mRNA up/down-regulation). Users can manage the complexity of the network by filtering by total alteration frequency of genes or by type and source of the interactions. This provides an effective means of managing network complexity, while automatically highlighting those genes most directly relevant to the cancer type in question. In addition, drugs and drug target data can optionally be shown in relation to the network of interest. In this talk, we would like to illustrate the main network analysis features using data from the TCGA project. We will also discuss our future plans for the network view.
The NRNB has been funded as an NIGMS Biomedical Technology Research Resource since 2010. During the previous five-year period, NRNB investigators introduced a series of innovative methods for network biology including network-based biomarkers, network-based stratification of genomes, and automated inference of gene ontologies using network data. Over the next five years, we will seek to catalyze major phase transitions in how biological networks are represented and used, working across three broad themes: (1) From static to differential networks, (2) From descriptive to predictive networks, and (3) From flat to hierarchical networks bridging across scales. All of these efforts leverage and further support our growing stable of network technologies, including the popular Cytoscape network analysis infrastructure.
Presentation for Network Biology SIG 2013 by Thomas Kelder, Bioinformatics Scientist at TNO in The Netherlands. “Functional Network Signatures Link Anti-diabetic Interventions with Disease Parameters”
Presentation for Network Biology SIG 2013 by Gang Su, University of Michigan, USA. “CoolMap Cytoscape App: Flexible Multi-scale Heatmap-Driven Molecular Network Exploration”
National Resource for Networks Biology's TR&D Theme 3: Although networks have been very useful for representing molecular interactions and mechanisms, network diagrams do not visually resemble the contents of cells. Rather, the cell involves a multi-scale hierarchy of components – proteins are subunits of protein complexes which, in turn, are parts of pathways, biological processes, organelles, cells, tissues, and so on. In this technology research project, we will pursue methods that move Network Biology towards such hierarchical, multi-scale views of cell structure and function.
Technology R&D Theme 2: From Descriptive to Predictive NetworksAlexander Pico
National Resource for Networks Biology's TR&D Theme 2: Genomics is mapping complex data about human biology and promises major medical advances. However, the routine use of genomics data in medical research is in its infancy, due mainly to the challenges of working with highly complex “big data”. In this theme, we will use network information to help organize, analyze and integrate these data into models that can be used to make clinically relevant diagnoses and predictions about an individual.
Systems biology & Approaches of genomics and proteomicssonam786
This presentation provides the basic understanding of varous genomics and proteomics techniques.Systems biology studies life as a system .It includes the study of living system using various omic technologies .
Presentation for Network Biology SIG 2013 by Thomas Kelder, Bioinformatics Scientist at TNO in The Netherlands. “Functional Network Signatures Link Anti-diabetic Interventions with Disease Parameters”
Presentation for Network Biology SIG 2013 by Gang Su, University of Michigan, USA. “CoolMap Cytoscape App: Flexible Multi-scale Heatmap-Driven Molecular Network Exploration”
National Resource for Networks Biology's TR&D Theme 3: Although networks have been very useful for representing molecular interactions and mechanisms, network diagrams do not visually resemble the contents of cells. Rather, the cell involves a multi-scale hierarchy of components – proteins are subunits of protein complexes which, in turn, are parts of pathways, biological processes, organelles, cells, tissues, and so on. In this technology research project, we will pursue methods that move Network Biology towards such hierarchical, multi-scale views of cell structure and function.
Technology R&D Theme 2: From Descriptive to Predictive NetworksAlexander Pico
National Resource for Networks Biology's TR&D Theme 2: Genomics is mapping complex data about human biology and promises major medical advances. However, the routine use of genomics data in medical research is in its infancy, due mainly to the challenges of working with highly complex “big data”. In this theme, we will use network information to help organize, analyze and integrate these data into models that can be used to make clinically relevant diagnoses and predictions about an individual.
Systems biology & Approaches of genomics and proteomicssonam786
This presentation provides the basic understanding of varous genomics and proteomics techniques.Systems biology studies life as a system .It includes the study of living system using various omic technologies .
Bioinformatics is a science field that is similar to but distinct from biological computation, while it is often considered synonymous to computational biology.
A systematic review of network analyst - PubricaPubrica
In a Systematic Review Writing, the network analyst is a bioinformatics tool designed to perform efficient PPI network analysis for data generated from gene expression experiments the following contents explain about the network analyst and their methods, in brief, using the help of Pubrica blog.
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Conference talk at BioSB 2015 in Lunteren, The Netherlands
* Date: 20 May 2015
* Title: "Integrative network based analysis of mRNA and miRNA expression in vitamin D3-treated cancer cells"
MicroRNA-Disease Predictions Based On Genomic Dataijtsrd
Gene Ontology is a structured library of concepts related with one or more gene products through a process called annotation. Association Rules that discovers biologically relevant and corresponding associations. In the existing system, they used Gene Ontology-based Weighted Association Rules for extracting annotated datasets. We here adapt the MOAL algorithm to mine cross-ontology association rules. Cross ontology rules to manipulate the Protein values from three sub ontologys for identifying the gene attacked disease. It focused on intrinsic and extrinsic values. The Co-Regulatory modules between microRNA, Transcription Factor and gene on function level with multiple genomic data. The regulations are compared with the help of integration technique. Iterative Multiplicative Updating Algorithm is used in our project to solve the optimization module function for the above interactions. Comparing the regulatory modules and protein value for gene and generating Bayesian rose tree for the efficiency of our result. Ajitha. C | DivyaLakshmi. K | Jothi Jayashree. M"MicroRNA-Disease Predictions Based On Genomic Data" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-3 , April 2018, URL: http://www.ijtsrd.com/papers/ijtsrd11386.pdf http://www.ijtsrd.com/computer-science/data-miining/11386/microrna-disease-predictions-based-on-genomic-data/ajitha-c
Visualization and Analysis of Dynamic Networks Alexander Pico
DynNetwork development was taken up initially by Sabina Sara Pfister back in GSoC 2012. She laid out a strong foundation for dynamic network visualization in Cytoscape and my job was to extend the plugin’s functionality to help users analyse time changing networks. The two of us were mentored by Jason Montojo. We had developed a decent tool over the course of two GSoC programs to aid dynamic network analysis and our efforts culminated in DynNetwork getting accepted for an oral presentation at the International Network for Social Network Analysis (INSNA), Sunbelt 2014 which was held in St. Petersburg, FL in February.
Keynote presentation for Network Biology SIG 2013 by Esti Yeger-Lotem, Senior Lecturer in Clinical Biochemistry at The National Institute for Biotechnology in the Negev, Israel
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
Knee anatomy and clinical tests 2024.pdfvimalpl1234
This includes all relevant anatomy and clinical tests compiled from standard textbooks, Campbell,netter etc..It is comprehensive and best suited for orthopaedicians and orthopaedic residents.
Acute scrotum is a general term referring to an emergency condition affecting the contents or the wall of the scrotum.
There are a number of conditions that present acutely, predominantly with pain and/or swelling
A careful and detailed history and examination, and in some cases, investigations allow differentiation between these diagnoses. A prompt diagnosis is essential as the patient may require urgent surgical intervention
Testicular torsion refers to twisting of the spermatic cord, causing ischaemia of the testicle.
Testicular torsion results from inadequate fixation of the testis to the tunica vaginalis producing ischemia from reduced arterial inflow and venous outflow obstruction.
The prevalence of testicular torsion in adult patients hospitalized with acute scrotal pain is approximately 25 to 50 percent
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
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Prix Galien International 2024 Forum ProgramLevi Shapiro
June 20, 2024, Prix Galien International and Jerusalem Ethics Forum in ROME. Detailed agenda including panels:
- ADVANCES IN CARDIOLOGY: A NEW PARADIGM IS COMING
- WOMEN’S HEALTH: FERTILITY PRESERVATION
- WHAT’S NEW IN THE TREATMENT OF INFECTIOUS,
ONCOLOGICAL AND INFLAMMATORY SKIN DISEASES?
- ARTIFICIAL INTELLIGENCE AND ETHICS
- GENE THERAPY
- BEYOND BORDERS: GLOBAL INITIATIVES FOR DEMOCRATIZING LIFE SCIENCE TECHNOLOGIES AND PROMOTING ACCESS TO HEALTHCARE
- ETHICAL CHALLENGES IN LIFE SCIENCES
- Prix Galien International Awards Ceremony
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3. Background
• Our initial use case: biological pathways
o Graphical representation of a biological process
o Intuitive
o Signaling pathways, metabolic pathways
o Contains gene products, proteins, metabolites,
different reactions and interactions
o WikiPathways, Reactome, KEGG, ...
5. Background
• Regulatory elements are often missing in
pathways
o transcription factors
o microRNAs
o drugs
o ...
• Why?
o Is the specific regulator really involved in this
7. Goal
• Integration of regulatory elements in network
analysis
• Using multiple datasources in parallel
• Flexibility and extensibility
• Different regulatory interactions, e.g. TF-
8. Goal
User-friendly for biologists and
bioinformaticians
Development of a Cytoscape app to integrate regulatory interactions into network analysis
10. Where does the data come from?
• Regulatory interactions are loaded from
RINs
o RIN = Regulatory Interaction Networks
o RINs support multiple identifier systems (BridgeDb)
o Existing regulatory interaction databases or user
generated
o Conversion scripts are open source and available on
github
14. CyTargetLinker workflow
Extension of the initial network with microRNA-
target information
predicted and validated miRNA targets from 4 different resources
18. CyTargetLinker workflow
• CyTargetLinker extracts the regulatory
interactions from all RINs relevant for the
initial network
• CyTargetLinker for Cytoscape 3 in pre-
release status (downloadable from website)
• CyTargetLinker for Cytoscape 2.8 can be
installed through the plugin manager
20. microRNAs in breast cancer
199 interactions from miRecords
443 interactions from miRTarBase
Heneghan, H. M., et al. "MicroRNAs as novel biomarkers
for breast cancer."Journal of oncology 2010 (2009).
BCL2 --> target of 4 miRNAs
CDKN1A --> target of 4 miRNAs
RB1 --> target of 2 miRNAs
ERBB2 --> target of 2 miRNAs
...
Identify target genes of specific miRNAs
and start building hypotheses
21. Pathway Extension
ENCODE: the Encyclopedia Of DNA Elements
•Goal: identify all functional elements in the human
genome sequence
•Paper: Architecture of the human regulatory network
derived from ENCODE data --> proximal and distal
transcription factor regulation
•Data is provided as networks
•RINs are provided on the website
24. Next steps
• Conversion of more resources to RINs
• Data retrieval through other services
(webservices, RDF, Neo4j databases)
• Export function to show which interactions
were added in which extension step
• Statistical output - VENN diagram showing
overlapping interactions
25. Summary
• User-friendly Cytoscape app to integrate
regulatory interactions into network analysis
in a flexible and extensible way
• RINs and tutorials can be found on
http://projects.bigcat.unimaas.nl/cytargetlinker
• CyTargetLinker is Open Source:
o http://github.com/mkutmon/cytargetlinker
o http://github.com/mkutmon/rin-creation
Original title "Building Biological Regulatory Networks in Cytoscape using CyTargetLinker" Thanks to the organizers for giving me the opportunity to present our Cytoscape app at the NetBioSIG.
I am first going to tell you a little bit about the background of the project, what were our initial use cases. Then I will walk you through an example to extend a gene network with microRNA information. After that I will present shortly two of the biological applications how CyTargetLinker can be applied in research and finally I will show some of the future development ideas that we want to work on.
As some of you probably know, I am involved in the WikiPathways project, which is one of the online pathway resources which is developed in Maastricht and San Francisco together. So our first use case for CyTargetLinker also started with a pathway. Biological pathways are graphical representations of biological process and they are used in educational books, papers, lab-books or presentations because they are much more intuitive to read and understand. There are different types of pathways, like signaling or metabolic pathways, but mostly the pathways contain gene products, proteins, metabolites and then different reactions and interactions to connect them. There are many different resources online available. As we heard in the previous talk, Reactome is one of the pathway databases, like WikiPathways or KEGG.
So usually we start with a pathway diagram like this, which represents the statin pathway from WikiPathways. You will see all the different elements, like gene products, proteins and metabolites, connected through different interactions, like activation or inhibition, but in most pathways you will not see any regulatory elements like microRNAs or drugs.
We believe that integrating those regulatory elements like transcription factors, microRNAs or drugs are crucial to understand how biological processes work. So why are they not there? Sometimes it is not easy to find out if a specific regulatory interaction is really relevant in one specific pathway in the setting that the pathway describes. Furthermore if we would add all the regulatory elements, the pathway might be way too big and cluttered to put it in a educational book or in a presentation, because you wouldn't see the basic pathway anymore. So we believe that if we look at the pathway in form of a network and would move the problem from a pathway to a network problem, we can provide tools to allow that integration of regulatory elements.
I will shortly present the basic idea of the CyTargetLinker app in Cytoscape. You start with a biological network, that might be a protein-protein network, a metabolic network, a set of unconnected nodes or any other biological network. If you want to integrate microRNA-target gene information, you can find for examples those three interactions in miRecords, which is a database containing validated microRNA target interactions. But it's of course not the only one, so CyTargetLinker also allows to visualize multiple resources at the same time. For example one interaction in miRecords is also present in miRTarBase another validated microRNA resource. And it also adds a new interaction that the user would have missed, just using miRecords. microRNAs are of course not the only regulatory elements. When we look at transcription factors, we can add interactions from the TFe database, the transcription factor encyclopedia. And we want that CyTargetLinker is able to integrate interactions in both direction, so it might be that the original network contains a transcription factor and then the targets will be added in the resulting network. So we want to have integration of mutliple datasource, indicated by the color of the edge, multiple types of regulatory interactions, and all possible directions (either adding only regulators, targets or both).
So in summary, CyTargetLinker should provide a framework to integrate regulatory elements in network analysis. It should be able to use multiple datasources in parallel, it should be flexible and extensible, allowing the user to always use the regulatory interactions he needs for his project. That also means it should not be restricted to any species or regulatory interaction type. And we want to implements this tool as a Cytoscape app, because often the created network will be the initial starting point to identify new hypotheses or perform advanced network analysis with all the different apps that are available for Cytoscape.
So the primarily goal was to develop a Cytoscape app to integrate regulatory interactions that can be used by biologists and bioinformaticians. We have users with basically no network analysis experience that use CyTargetLinker to look for overlapping target genes of microRNAs, to look for possible regulators of a set of genes and so on. But we also have Bioinformaticians as users, because the workflow is very easy and it gives them a lot of freedom in what data to choose.
So you can find the tutorials, source code, and general information on our website (http://projects.bigcat.unimaas.nl/cytargetlinker). CyTargetLinker is available through the plugin manager in Cytoscape 2.8 versions and is currently available as download on our website for Cytoscape 3, but most our figures are already created with the new version, so it will be submitted in the upcoming weeks to the app store and will then be available through the Cytoscape app manager in Cytoscape 3 as well. And now I will walk you shortly through a typical CyTargetLinker workflow, but first I want to introduce where CyTargetLinker gets the regulatory information.
We are providing a set of regulatory interaction networks, shortly called RINs. Those RINs are mostly network representations of online interaction databases. Users can download RINs for different species from the CyTargetLinker website, but we also provide the conversion scripts for all the RINs we provide and more in case we are not allowed to redistribute the data directly because of license issues. Furthermore in the RIN creation step we included BridgeDb - an identifier mapping framework for bioinformatics applications. That means that all RINs, independent from which online database they come from, support the same identifier systems.
So usually the data is downloadable as a Excel file which shows one interaction per line. The identifier systems might be different in each database, so it's not easy to compare them directly. On the website we provide those Excel tables in form of a XGMML file, like this. The network contains microRNAs and gene nodes and the target interactions between them. Since all those networks are provided in XGMML files, they can be visualized and used in Cytoscape directly as well.
http://www.broadinstitute.org/gsea/msigdb/cards/GNF2_MKI67.html ToDo: redo figure with neighborhood connections - so MKI67 in the middle I am not so happy with the red color. It is really hard to read the gene names. And I also don't think it looks good. But that is a matter of taste.
TODO: redo
I think there is a slide after this needed - kind of summarizing the whole workflow.
Extension of 8 known microRNAs involved in breast cancer Extend them with miRecords and miRTarBase - well studied microRNAs - lots of interactions typical cancer related genes show up as targets of multiple microRNAs in this set CDKN1A --> p21
had to do this figure in cytoscape 2.8 because we are not far enough with the wikipathways app in cytoscape 3 but that will be ready soon too .
