This document outlines a technique called mitochondrial replacement that can help mothers pass on healthy mitochondrial DNA rather than defective mitochondrial DNA that can cause mitochondrial disease in their offspring. The technique involves either maternal spindle transfer or pronuclear transfer through in-vitro fertilization to combine the mother's egg and father's sperm in a way that replaces the mother's defective mitochondria. This reduces the risk of children inheriting fatal mitochondrial diseases and allows women to have genetically related children without passing on mitochondrial disorders.
Three parent babies will be reality soon happy hoHappy HO
While the method has raised a number of ethical concerns, the latest study published in the journal Nature, suggests there should be no worries about its technical feasibility nor about the risks for embryos safety.Happyho
The procedure is called as "three-parent" in vitro fertilization because the babies, born from genetically modified embryos, would have DNA from a mother, a father and from a healthier female donor to prevent some serious incurable diseases passing on.
About us: FertilityConsultants.ca is people choice of consulting firm International Surrogacy in Canada which is fully devoted in helping couples who are having difficulty in trying to conceive.
Synthetic biology with Three parent Baby presentation and legal issues relate...Vikram Jeet Singh
This presentation deals with the use of synthetic biology in current world to produce synthetic microorganisms and issues related to that. Three parent baby is also a part of synthetic biology where faulty mitochondria of one mother are replaced by healthy mitochondria of other women. It is a revolution towards the production of the designer baby. This designer baby will be a concern shortly as human are acting like God and may be started to produce the baby with other unknown defects or diseases which might be uncurable in the near future.
Three parent babies will be reality soon happy hoHappy HO
While the method has raised a number of ethical concerns, the latest study published in the journal Nature, suggests there should be no worries about its technical feasibility nor about the risks for embryos safety.Happyho
The procedure is called as "three-parent" in vitro fertilization because the babies, born from genetically modified embryos, would have DNA from a mother, a father and from a healthier female donor to prevent some serious incurable diseases passing on.
About us: FertilityConsultants.ca is people choice of consulting firm International Surrogacy in Canada which is fully devoted in helping couples who are having difficulty in trying to conceive.
Synthetic biology with Three parent Baby presentation and legal issues relate...Vikram Jeet Singh
This presentation deals with the use of synthetic biology in current world to produce synthetic microorganisms and issues related to that. Three parent baby is also a part of synthetic biology where faulty mitochondria of one mother are replaced by healthy mitochondria of other women. It is a revolution towards the production of the designer baby. This designer baby will be a concern shortly as human are acting like God and may be started to produce the baby with other unknown defects or diseases which might be uncurable in the near future.
This presentation describes about gene modified babies, latest examples about that (Lulu and Nana), gene modifying techniques (CRISPR technique), advantages and disadvantages of gene modified babies.
Since the birth of Louise Brown, the first baby born through in vitro fertilization, in 1978, assisted reproductive technology has advanced significantly. The success rate of in vitro fertilization (IVF) has risen dramatically over the last four decades as a result of developments in incubation methods, micromanipulation technology, and a general understanding of assisted reproduction.
This presentation describes about gene modified babies, latest examples about that (Lulu and Nana), gene modifying techniques (CRISPR technique), advantages and disadvantages of gene modified babies.
Since the birth of Louise Brown, the first baby born through in vitro fertilization, in 1978, assisted reproductive technology has advanced significantly. The success rate of in vitro fertilization (IVF) has risen dramatically over the last four decades as a result of developments in incubation methods, micromanipulation technology, and a general understanding of assisted reproduction.
Human Genome Engineering, Recent discoveries, Types of Designer babies, Methods used for Designer Babies, CRISPR, ETHICAL CONSIDERATION OF HUMAN GENOME ENGINEERING
it contain some production techniques of transgenic animals with some examples and utility in drug development (available transgenic animals model of drug and their activity).
Applications and uses in different field
Another techniques like transposons and knock-out & knock-in discussed later
description of transgenic animals and production with desired traits using different methods and their applications and their advantages and disadvantages
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Cancer cell metabolism: special Reference to Lactate PathwayAADYARAJPANDEY1
Normal Cell Metabolism:
Cellular respiration describes the series of steps that cells use to break down sugar and other chemicals to get the energy we need to function.
Energy is stored in the bonds of glucose and when glucose is broken down, much of that energy is released.
Cell utilize energy in the form of ATP.
The first step of respiration is called glycolysis. In a series of steps, glycolysis breaks glucose into two smaller molecules - a chemical called pyruvate. A small amount of ATP is formed during this process.
Most healthy cells continue the breakdown in a second process, called the Kreb's cycle. The Kreb's cycle allows cells to “burn” the pyruvates made in glycolysis to get more ATP.
The last step in the breakdown of glucose is called oxidative phosphorylation (Ox-Phos).
It takes place in specialized cell structures called mitochondria. This process produces a large amount of ATP. Importantly, cells need oxygen to complete oxidative phosphorylation.
If a cell completes only glycolysis, only 2 molecules of ATP are made per glucose. However, if the cell completes the entire respiration process (glycolysis - Kreb's - oxidative phosphorylation), about 36 molecules of ATP are created, giving it much more energy to use.
IN CANCER CELL:
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
introduction to WARBERG PHENOMENA:
WARBURG EFFECT Usually, cancer cells are highly glycolytic (glucose addiction) and take up more glucose than do normal cells from outside.
Otto Heinrich Warburg (; 8 October 1883 – 1 August 1970) In 1931 was awarded the Nobel Prize in Physiology for his "discovery of the nature and mode of action of the respiratory enzyme.
WARNBURG EFFECT : cancer cells under aerobic (well-oxygenated) conditions to metabolize glucose to lactate (aerobic glycolysis) is known as the Warburg effect. Warburg made the observation that tumor slices consume glucose and secrete lactate at a higher rate than normal tissues.
The increased availability of biomedical data, particularly in the public domain, offers the opportunity to better understand human health and to develop effective therapeutics for a wide range of unmet medical needs. However, data scientists remain stymied by the fact that data remain hard to find and to productively reuse because data and their metadata i) are wholly inaccessible, ii) are in non-standard or incompatible representations, iii) do not conform to community standards, and iv) have unclear or highly restricted terms and conditions that preclude legitimate reuse. These limitations require a rethink on data can be made machine and AI-ready - the key motivation behind the FAIR Guiding Principles. Concurrently, while recent efforts have explored the use of deep learning to fuse disparate data into predictive models for a wide range of biomedical applications, these models often fail even when the correct answer is already known, and fail to explain individual predictions in terms that data scientists can appreciate. These limitations suggest that new methods to produce practical artificial intelligence are still needed.
In this talk, I will discuss our work in (1) building an integrative knowledge infrastructure to prepare FAIR and "AI-ready" data and services along with (2) neurosymbolic AI methods to improve the quality of predictions and to generate plausible explanations. Attention is given to standards, platforms, and methods to wrangle knowledge into simple, but effective semantic and latent representations, and to make these available into standards-compliant and discoverable interfaces that can be used in model building, validation, and explanation. Our work, and those of others in the field, creates a baseline for building trustworthy and easy to deploy AI models in biomedicine.
Bio
Dr. Michel Dumontier is the Distinguished Professor of Data Science at Maastricht University, founder and executive director of the Institute of Data Science, and co-founder of the FAIR (Findable, Accessible, Interoperable and Reusable) data principles. His research explores socio-technological approaches for responsible discovery science, which includes collaborative multi-modal knowledge graphs, privacy-preserving distributed data mining, and AI methods for drug discovery and personalized medicine. His work is supported through the Dutch National Research Agenda, the Netherlands Organisation for Scientific Research, Horizon Europe, the European Open Science Cloud, the US National Institutes of Health, and a Marie-Curie Innovative Training Network. He is the editor-in-chief for the journal Data Science and is internationally recognized for his contributions in bioinformatics, biomedical informatics, and semantic technologies including ontologies and linked data.
(May 29th, 2024) Advancements in Intravital Microscopy- Insights for Preclini...Scintica Instrumentation
Intravital microscopy (IVM) is a powerful tool utilized to study cellular behavior over time and space in vivo. Much of our understanding of cell biology has been accomplished using various in vitro and ex vivo methods; however, these studies do not necessarily reflect the natural dynamics of biological processes. Unlike traditional cell culture or fixed tissue imaging, IVM allows for the ultra-fast high-resolution imaging of cellular processes over time and space and were studied in its natural environment. Real-time visualization of biological processes in the context of an intact organism helps maintain physiological relevance and provide insights into the progression of disease, response to treatments or developmental processes.
In this webinar we give an overview of advanced applications of the IVM system in preclinical research. IVIM technology is a provider of all-in-one intravital microscopy systems and solutions optimized for in vivo imaging of live animal models at sub-micron resolution. The system’s unique features and user-friendly software enables researchers to probe fast dynamic biological processes such as immune cell tracking, cell-cell interaction as well as vascularization and tumor metastasis with exceptional detail. This webinar will also give an overview of IVM being utilized in drug development, offering a view into the intricate interaction between drugs/nanoparticles and tissues in vivo and allows for the evaluation of therapeutic intervention in a variety of tissues and organs. This interdisciplinary collaboration continues to drive the advancements of novel therapeutic strategies.
Multi-source connectivity as the driver of solar wind variability in the heli...Sérgio Sacani
The ambient solar wind that flls the heliosphere originates from multiple
sources in the solar corona and is highly structured. It is often described
as high-speed, relatively homogeneous, plasma streams from coronal
holes and slow-speed, highly variable, streams whose source regions are
under debate. A key goal of ESA/NASA’s Solar Orbiter mission is to identify
solar wind sources and understand what drives the complexity seen in the
heliosphere. By combining magnetic feld modelling and spectroscopic
techniques with high-resolution observations and measurements, we show
that the solar wind variability detected in situ by Solar Orbiter in March
2022 is driven by spatio-temporal changes in the magnetic connectivity to
multiple sources in the solar atmosphere. The magnetic feld footpoints
connected to the spacecraft moved from the boundaries of a coronal hole
to one active region (12961) and then across to another region (12957). This
is refected in the in situ measurements, which show the transition from fast
to highly Alfvénic then to slow solar wind that is disrupted by the arrival of
a coronal mass ejection. Our results describe solar wind variability at 0.5 au
but are applicable to near-Earth observatories.
This pdf is about the Schizophrenia.
For more details visit on YouTube; @SELF-EXPLANATORY;
https://www.youtube.com/channel/UCAiarMZDNhe1A3Rnpr_WkzA/videos
Thanks...!
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
3. INTRODUCTION
DNA – The genetic
characteristics inherited
from both parents
(mother & father).
Mitochondria –
Organelles responsible
for creating energy
needed for cell
functioning. 3
About one in every 200 babies develop mitochondrial
disease.
It is inherited from the mother.
Mitochondrial DNA is found within the mitochondria, and is
necessary for normal mitochondria function; and is defective in
children with mitochondrial disease.
An In-Vitro-Fertilization (IVF) technique was created to help
mothers passing on defective mitochondrial DNA to their
offspring.
IVF – is the joining of a
woman’s egg and a man’s
sperm in a lab dish.
Offspring from this technique are
commonly called three parent babies.
4. Aim
Reducing heredity of defective mitochondrial
DNA.
4
OBJECTIVE
Using IVF technique; maternal spindle transfer
and pronuclear transfer to reduce heredity of
mitochondrial disease.
5. INTRO. CONTD
Three parent babies are human
offspring with three genetic parents
(Two mothers and a father).
5
3 parent babies
Maternal spindle
transfer
Pronuclear
transfer
6. HOW IS IT DONE
6
Figure 1; procedure for of Maternal
spindle transfer.
Figure 2; procedure for
Pronuclear transfer.
7. WHY IS IT NEEDED
Mitochondrial replacement technique would
eliminate maternal transmission of
mitochondrial disease.
Defective mitochondrial DNA can lead to
brain damage, muscle wasting, heart failure
and blindness; which sometimes lead to
early death.
7
8. CONCLUSION
The risk of children inheriting fatal mitochondrial
disease is reduced.
The embryo from the maternal spindle transfer
and pronuclear transfer has no abnormalities and
also has no difference with the natural embryo.
8
Embryos created through maternal
spindle transfer and pronuclear transfer
are no more likely to suffer from genetic
anomalies, birth defects, miscarriages.
