This document discusses various topics related to gene therapy including its applications in cancer, HIV, and hemophilia. It discusses CAR receptor technology, the HACE lipoplex method, CRISPR/Cas9, mRNA vaccines, and the immune response to gene therapy. It also summarizes the case of Jesse Gelsinger who died in a gene therapy trial for a rare metabolic disorder and methods of gene knockout.
Gene therpay is a promising treatment process and it involves the use of various drugs and their mechanisms are important to study for their effevtive usage.
NUCLEIC ACID BASED THERAPEUTIC DELIVERY SYSTEM by pramesh..pptxPRAMESHPANWAR1
Name of the title: Nucleic Acid-Based Therapeutic Delivery System.
It includes information about nucleic acid, gene therapy, and its type, a method to deliver the desired DNA, i.e., vectors and their types, with proper examples and diagrams, and how these things help in delivering a nucleic acid-based therapeutic drug delivery system.
Genome Editing & Gene Therapy by Eric KelsicImpact.Tech
Slides from the Genome editing & gene therapy Impact.tech seminar, hosted by Eric Kelsic on June 11th, 2019.
The seminar covers the experiments and inventions that led to the development of genome editing technologies. These inventions were derived from life itself: isolated from natural organisms and adapted for scientific and therapeutic goals. You will learn the history of how genome engineering tools, including CRISPR, and delivery technology, including AAV capsids, were created in their modern form. The seminar explores how genome editing and gene therapy technologies are giving individuals control over their own genomes, focusing on the treatment of genetic diseases. It will describe major companies and emerging trends in the gene therapy industry. Finally, the seminar will discuss how and where new discoveries, including accelerated algorithms for genetic engineering, will lead us in the near and distant future.
Eric Kelsic, PhD, is the founder and CEO of Dyno Therapeutics, a VC-backed biotech located in Cambridge, Massachusetts. Dyno is leading a machine learning revolution to develop enhanced capsid proteins that enable new gene and genome editing therapies. Eric co-developed the technology underlying Dyno’s machine-guided protein engineering platform as a Staff Scientist in George Church’s lab at the Wyss Institute of Harvard Medical School. He holds a PhD in Systems Biology from Harvard University and a BS in Physics from Caltech.
Gene therpay is a promising treatment process and it involves the use of various drugs and their mechanisms are important to study for their effevtive usage.
NUCLEIC ACID BASED THERAPEUTIC DELIVERY SYSTEM by pramesh..pptxPRAMESHPANWAR1
Name of the title: Nucleic Acid-Based Therapeutic Delivery System.
It includes information about nucleic acid, gene therapy, and its type, a method to deliver the desired DNA, i.e., vectors and their types, with proper examples and diagrams, and how these things help in delivering a nucleic acid-based therapeutic drug delivery system.
Genome Editing & Gene Therapy by Eric KelsicImpact.Tech
Slides from the Genome editing & gene therapy Impact.tech seminar, hosted by Eric Kelsic on June 11th, 2019.
The seminar covers the experiments and inventions that led to the development of genome editing technologies. These inventions were derived from life itself: isolated from natural organisms and adapted for scientific and therapeutic goals. You will learn the history of how genome engineering tools, including CRISPR, and delivery technology, including AAV capsids, were created in their modern form. The seminar explores how genome editing and gene therapy technologies are giving individuals control over their own genomes, focusing on the treatment of genetic diseases. It will describe major companies and emerging trends in the gene therapy industry. Finally, the seminar will discuss how and where new discoveries, including accelerated algorithms for genetic engineering, will lead us in the near and distant future.
Eric Kelsic, PhD, is the founder and CEO of Dyno Therapeutics, a VC-backed biotech located in Cambridge, Massachusetts. Dyno is leading a machine learning revolution to develop enhanced capsid proteins that enable new gene and genome editing therapies. Eric co-developed the technology underlying Dyno’s machine-guided protein engineering platform as a Staff Scientist in George Church’s lab at the Wyss Institute of Harvard Medical School. He holds a PhD in Systems Biology from Harvard University and a BS in Physics from Caltech.
The sequencing of the human genome has been compared to putting a man on the moon, and it will certainly change health care, but the most important work lies ahead, in determining how to put the information to medical use. In this context, applications such as gene therapy are being explored. What was once seen as a science fiction dream is now becoming a real possibility.
Gene therapy is a new form of drug delivery that leads the patient's own cells to produce a therapeutic agent. It could potentially eliminate the need for repeated administration of proteins or drugs. Applications of gene therapy not only include rare inherited diseases but extend to common acquired disorders, including tumours (predominantly malignant melanoma) and haematological disorders, cardiovascular disease, and the acquired immunodeficiency syndrome. Gene therapy therefore could be a key element of medical practice in the future. Gene therapy is the insertion of genes into an individual's cells and tissues to treat a disease, and hereditary diseases in which a defective mutant allele is replaced with a functional one. Although the technology is still in its infancy, it has been used with some success. Antisense therapy is not strictly a form of gene therapy, but is a genetically-mediated therapy and is often considered together with other methods.
Gene therapy
Introduction
History
Overview
Administration route (ex vivo and in vivo)
Categories (somatic and germline therapy)
Gene delivery methods (physical, chemical and biological)
Viral vectors
Adenovirus vectors
Add not associated virus (AAV) based vectors
Retrovirus vectors
Construction and modification of viral vectors (pseudotyping, serology modification etc. )
Strategies
Gene augmentation therapy
Gene inhibition therapy
Gene targeting,
Assisted killing
Prodrug delivery
Clinical trials on Adenosine deaminase deficiency linked severe combined immunodeficiency syndrome, cystic fibrosis, inherited retinopathies
Recent developments
Gene therapy of cancer
Conclusion
The emerging CRISPR/Cas9 gene editing technology greatly accelerates the R&D process in life sciences. Here, we briefly introduce CRISPR/Cas9 and its delivery strategies.
A brief exploration of the way some modern viruses act and ancient viruses have acted to benefit their hosts - particularly humans - today and through evolutionary history, by various means (such as targeted destruction of pathogenic bacteria and introduction of new genetic material).
Genetic engineering principle, tools, techniques, types and applicationTarun Kapoor
Basic principles of genetic engineering.
Study of cloning vectors, restriction endonucleases and DNA ligase.
Recombinant DNA technology. Application of genetic engineering in medicine.
Application of r DNA technology and genetic engineering in the products:
a. Interferon
b. Vaccines- hepatitis- B
c. Hormones- Insulin.
Polymerase chain reaction
Brief introduction to PCR
Basic principles of PCR
Gene therapy is the process of inserting genes into cells to prevent, treat or cure wide range of diseases. Gene therapy primarily involves genetic manipulations in animals or humans to correct a disease. Gene augmentation therapy: a DNA is inserted into the Genome to replace the missing gene product.Gene inhibition therapy: the antisense gene inhibits the expression of the dominant gene.
Gene Therapy, Somatic cell gene therapy, germ line gene therapy, classical gene therapy, non-classical gene therapy, targets of gene therapy, barriers of gene therapy, ex vivo gene therapy, in vivo gene therapy, vectors for gene delivery, antisense therapy
The sequencing of the human genome has been compared to putting a man on the moon, and it will certainly change health care, but the most important work lies ahead, in determining how to put the information to medical use. In this context, applications such as gene therapy are being explored. What was once seen as a science fiction dream is now becoming a real possibility.
Gene therapy is a new form of drug delivery that leads the patient's own cells to produce a therapeutic agent. It could potentially eliminate the need for repeated administration of proteins or drugs. Applications of gene therapy not only include rare inherited diseases but extend to common acquired disorders, including tumours (predominantly malignant melanoma) and haematological disorders, cardiovascular disease, and the acquired immunodeficiency syndrome. Gene therapy therefore could be a key element of medical practice in the future. Gene therapy is the insertion of genes into an individual's cells and tissues to treat a disease, and hereditary diseases in which a defective mutant allele is replaced with a functional one. Although the technology is still in its infancy, it has been used with some success. Antisense therapy is not strictly a form of gene therapy, but is a genetically-mediated therapy and is often considered together with other methods.
Gene therapy
Introduction
History
Overview
Administration route (ex vivo and in vivo)
Categories (somatic and germline therapy)
Gene delivery methods (physical, chemical and biological)
Viral vectors
Adenovirus vectors
Add not associated virus (AAV) based vectors
Retrovirus vectors
Construction and modification of viral vectors (pseudotyping, serology modification etc. )
Strategies
Gene augmentation therapy
Gene inhibition therapy
Gene targeting,
Assisted killing
Prodrug delivery
Clinical trials on Adenosine deaminase deficiency linked severe combined immunodeficiency syndrome, cystic fibrosis, inherited retinopathies
Recent developments
Gene therapy of cancer
Conclusion
The emerging CRISPR/Cas9 gene editing technology greatly accelerates the R&D process in life sciences. Here, we briefly introduce CRISPR/Cas9 and its delivery strategies.
A brief exploration of the way some modern viruses act and ancient viruses have acted to benefit their hosts - particularly humans - today and through evolutionary history, by various means (such as targeted destruction of pathogenic bacteria and introduction of new genetic material).
Genetic engineering principle, tools, techniques, types and applicationTarun Kapoor
Basic principles of genetic engineering.
Study of cloning vectors, restriction endonucleases and DNA ligase.
Recombinant DNA technology. Application of genetic engineering in medicine.
Application of r DNA technology and genetic engineering in the products:
a. Interferon
b. Vaccines- hepatitis- B
c. Hormones- Insulin.
Polymerase chain reaction
Brief introduction to PCR
Basic principles of PCR
Gene therapy is the process of inserting genes into cells to prevent, treat or cure wide range of diseases. Gene therapy primarily involves genetic manipulations in animals or humans to correct a disease. Gene augmentation therapy: a DNA is inserted into the Genome to replace the missing gene product.Gene inhibition therapy: the antisense gene inhibits the expression of the dominant gene.
Gene Therapy, Somatic cell gene therapy, germ line gene therapy, classical gene therapy, non-classical gene therapy, targets of gene therapy, barriers of gene therapy, ex vivo gene therapy, in vivo gene therapy, vectors for gene delivery, antisense therapy
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
Title: Sense of Smell
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 primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
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
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.
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
New Drug Discovery and Development .....NEHA GUPTA
The "New Drug Discovery and Development" process involves the identification, design, testing, and manufacturing of novel pharmaceutical compounds with the aim of introducing new and improved treatments for various medical conditions. This comprehensive endeavor encompasses various stages, including target identification, preclinical studies, clinical trials, regulatory approval, and post-market surveillance. It involves multidisciplinary collaboration among scientists, researchers, clinicians, regulatory experts, and pharmaceutical companies to bring innovative therapies to market and address unmet medical needs.
Couples presenting to the infertility clinic- Do they really have infertility...Sujoy Dasgupta
Dr Sujoy Dasgupta presented the study on "Couples presenting to the infertility clinic- Do they really have infertility? – The unexplored stories of non-consummation" in the 13th Congress of the Asia Pacific Initiative on Reproduction (ASPIRE 2024) at Manila on 24 May, 2024.
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
263778731218 Abortion Clinic /Pills In Harare ,sisternakatoto
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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!
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
2. QUESTIONS???
• Gene therapy in Cancer, HIV, Hemophilia, Heart disease
• CAR Receptor
• HACE lipoplex
• Levo dopa and Carbi dopa mechanism of action
• Immune response to gene therapy
• Jesse Gelsinger case
• Gene Knockout
• CRISPR/Cas9
• mRNA vaccine – gene therapy or not
3. 1. GENE THERAPY
A. CANCER
(Cross D, Burmester JK. Gene therapy for cancer treatment: past, present and future. Clin Med
Res. 2006;4(3):218-227. doi:10.3121/cmr.4.3.218)
4. Contd…
• CAR19 T cells were used for the treatment of an infant with refractory relapsed acute B-
lymphoblastic leukemia (B-ALL) with great success
(Qasim WAS,SamarasingheS First clinical application of Talen engineered universal CAR19 T cells in B-ALL Blood
2015;126 (23):2046)
• In hepatocellular carcinoma (HCC), recently it has been demonstrated that fibroblast growth
factor receptor 4 (FGFR4) knockout by CRISPR technology can make HCC cancer cells sensitized to
sorafenib
(Ardelt MAFT Martini E Inhibition of Cyclin-dependent kinase 5 – a novel strategy to improve Sorafenib
response in HCC therapy Hepatology 2019 ;69 :376)
5. B. HIV
• VRX496, a gene-based immunotherapy for the treatment of HIV that uses a lentiviral vector to
deliver an antisense gene against the HIV envelope in phase I clinical trial, chronic HIV infection
who had failed to respond to at least two antiretroviral regimens were treated.
(Levine BL, Humeau LM, Boyer J, MacGregor RR, Rebello T, Lu X, et al. (November 2006). "Gene transfer in humans using a conditionally replicating
lentiviral vector". Proceedings of the National Academy of Sciences of the United States of America. 103 (46): 17372–17377.)
• In 2007 and 2008, a man (Timothy Ray Brown) was cured of HIV by repeated hematopoietic stem
cell transplantation (see also allogeneic stem cell transplantation, allogeneic bone marrow
transplantation, allotransplantation) with double-delta-32 mutation which disables
the CCR5 receptor. This cure was accepted by the medical community in 2011.
( Rosenberg T (27 May 2011). "The Man Who Was Cured of HIV and What It Means for a Cure for AIDS". New York. Retrieved 2 January 2022.)
6. GENE THERAPY IN HEMOPHILIA
• Hemophilia A and B are congenital bleeding disorders caused by a dysfunction or deficiency of
coagulation factor (F) VIII or IX, respectively
• Genetically modified adeno - associated virus (AAV) engineered to deliver either the FVIII or FIX
gene to the liver, leading to the continuous endogenous synthesis and secretion of the missing
coagulation factor and preventing or reducing bleeding episodes.
(Amit C. Nathwani; Gene therapy for hemophilia. Hematology Am Soc Hematol Educ Program 2022;
2022 (1): 569–578.)
8. 2. CAR RECEPTOR(COXSACKIEVIRUS AND
ADENOVIRUS RECEPTOR RECEPTOR)
• Membrane receptor for coxsackie
viruses and adenoviruses.
• Expressed in several tissues,
including heart, brain, and, more
generally, epithelial and endothelial cells
• Involved in cell adhesion, immune cell
activation, synaptic transmission, and
signaling
(Abdolazimi, Y., Mojarrad, M., Pedram, M., & Modarressi, M. H. (2007). Analysis of the expression of coxsackievirus and
adenovirus receptor in five colon cancer cell lines. World journal of gastroenterology, 13(47), 6365–6369.
https://doi.org/10.3748/wjg.v13.i47.6365)
9. 3. CASE OF JESSE GELSINGER
• Jesse had a rare metabolic disorder called ornithine transcarbamylase deficiency syndrome, or
OTCD, in which ammonia builds up to lethal levels in the blood.
• Babies born with OTCD usually fall into comas soon after birth and suffer brain damage. die
within a month.
• Jesse’s milder version of the deficiency was diagnosed when he was two years old
• In 1999, Clinical trial for a potential OTCD treatment was in the works at the University of
Pennsylvania in Philadelphia .Patients would be injected with working copies of the gene that had
been attached to an adenovirus.
• The virus, altered to be harmless, would infect the patients’ liver cells and integrate the added
gene into their chromosomal DNA.
• Within a day he became disoriented and showed signs of jaundice. He had an intense
inflammatory response and developed a dangerous blood-clotting disorder, followed by kidney,
liver, and lung failure.
• Four days after receiving the shot Jesse was declared brain dead and taken off life support.
10. 4. IMMUNE RESPONSE TO GENE THERAPY
• Innate immune response : early, not antigen specific, and no immunological memory.
• Adaptive immune response: rely on activation and clonal expansion of antigen-specific (effector) B
and T cell differentiation, and generate immunological memory
• Recognition of viral structures (e.g., capsids or nucleic acids) produces immune response
12. 5. Lipoplex (HACE)
HACE-based lipo-somes were prepared using cationic
lipid DOTAP and fusogenic helper lipid DOPE .
Then, cationic lipo-somes were prepared placing HA on
the surface and CE buried in the lipid bilayer
*1,2-dioleoyl-3-trimethylammonium-propane
(DOTAP) and 1,2-dioleoyl-sn-glycero-3-
phoshphoethanola-
mine (DOPE) lipids
13. 6. CRISPR cas9
• Genome editing tool
• consists of two key molecules
• Cas9- enzyme act as molecular scissors
• gRNA- pre-designed RNA sequence (about 20
bases long) located within a longer RNA
scaffold
• The scaffold part binds to DNA and the pre-
designed sequence ‘guides’ Cas9 to the right
part of the genome
• Cas9 follows the guide RNA to the same
location in the DNA sequence and makes a cut
across both strands of the DNA.
• Cell recognises that the DNA is damaged and
tries to repair it.
(Clustered Regularly Interspaced Short Palindromic
Repeats)
14. 7. LEVO DOPA AND CARBI DOPA IN
PARKINSONISM
• Levodopa is converted to dopamine via the action of a naturally
occurring enzyme called DOPA decarboxylase.
• This occurs both in the peripheral circulation and in the central nervous system after
levodopa has crossed the blood brain barrier.
• Usually administered in combination with a DOPA decarboxylase inhibitor (DDCI),
(carbidopa), which is very polar (and charged at physiologic pH) and cannot cross the
blood brain barrier, prevents peripheral conversion of levodopa to dopamine
• Reduces peripheral side effects of levodopa. (Nausea, vomiting)
• Carbidopa also increases the quantity of levodopa in the bloodstream that is available to
enter the brain.
15. 8. GENE KNOCKOUT
• a processof gene inactivation or
removal
• types: complete and conditional
• Methods for gene knockout are
enlisted here:
1.Gene silencing
2.Conditional knockout
3.Homologous recombination
4.Gene editing
5.Knockout by mutation
16. 9. mRNA VACCINES
• An mRNA vaccine is a type of vaccine that uses a copy of a molecule called messenger
RNA (mRNA) to produce an immune response.
• The vaccine delivers molecules of antigen-encoding mRNA into immune cells, which use the
designed mRNA as a blueprint to build foreign protein that would normally be produced by
a pathogen (such as a virus) or by a cancer cell.
• These protein molecules stimulate an adaptive immune response that teaches the body to
identify and destroy the corresponding pathogen or cancer cells
18. Contd…
• As mRNA is genetic material, mRNA vaccines can be looked at as a genetic-based therapy, but
they are classified as vaccines and are not designed to alter your genes
• Gene therapy, in the classical sense, involves making deliberate changes to a patient’s DNA in
order to treat or cure them. mRNA vaccines will not enter a cell’s nucleus that houses your DNA
genome. There is zero risk of these vaccines integrating into our own genome or altering our
genetic makeup.
Quoted by Dr Adam Taylor, a virologist and research fellow at the Menzies Health Institute,
Queensland, Griffith University