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Archive for the ‘genetics’ category: Page 3

Aug 26, 2024

Non-cognitive skills: DNA-based analyses suggest a hidden key to academic success

Posted by in categories: biotech/medical, education, genetics, neuroscience

A new Nature Human Behaviour study, jointly led by Dr. Margherita Malanchini at Queen Mary University of London and Dr. Andrea Allegrini at University College London, has revealed that non-cognitive skills, such as motivation and self-regulation, are as important as intelligence in determining academic success. These skills become increasingly influential throughout a child’s education, with genetic factors playing a significant role.

The research, conducted in collaboration with an international team of experts, suggests that fostering non-cognitive skills alongside could significantly improve educational outcomes.

“Our research challenges the long-held assumption that intelligence is the primary driver of ,” says Dr. Malanchini, Senior Lecturer in Psychology at Queen Mary University of London.

Aug 26, 2024

Scientists discover new code governing gene activity

Posted by in categories: biotech/medical, genetics

A newly discovered code within DNA—coined “spatial grammar”—holds a key to understanding how gene activity is encoded in the human genome.

This breakthrough finding, identified by researchers at Washington State University and the University of California, San Diego and published in Nature, revealed a long-postulated hidden spatial grammar embedded in DNA. The research could reshape scientists’ understanding of and how genetic variations may influence in development or disease.

Transcription factors, the proteins that control which genes in one’s genome are turned on or off, play a crucial role in this code. Long thought of as either or repressors of gene activity, this research shows the function of transcription factors is far more complex.

Aug 24, 2024

Beyond gene-edited babies: the possible paths for tinkering with human evolution

Posted by in categories: biotech/medical, evolution, genetics

CRISPR will get easier and easier to administer. What does that mean for the future of our species?

Aug 24, 2024

EePASSIGE Engineers Gene-Sized Edits in Human Cells

Posted by in categories: biotech/medical, genetics

The improved gene-editing approach combines prime editors with a more efficient recombinase to insert or substitute gene-sized DNA segments.

Aug 24, 2024

Scientists Discover “Spatial Grammar” in DNA: Breakthrough Could Rewrite Genetics Textbooks

Posted by in categories: biotech/medical, genetics

Researchers have discovered a “spatial grammar” in DNA that redefines the role of transcription factors in gene regulation, influencing our understanding of genetic variations and disease.

A recently uncovered code within DNA, referred to as “spatial grammar,” may unlock the secret to how gene activity is encoded in the human genome.

This breakthrough finding, identified by researchers at Washington State University and the University of California, San Diego and published in Nature, revealed a long-postulated hidden spatial grammar embedded in DNA. The research could reshape scientists’ understanding of gene regulation and how genetic variations may influence gene expression in development or disease.

Aug 23, 2024

Frontiers: Brain organoids have become increasingly used systems allowing 3D-modeling of human brain development, evolution, and disease

Posted by in categories: biotech/medical, evolution, genetics, neuroscience

To be able to make full use of these modeling systems, researchers have developed a growing toolkit of genetic modification techniques. These techniques can be applied to mature brain organoids or to the preceding embryoid bodies (EBs) and founding cells. This review will describe techniques used for transient and stable genetic modification of brain organoids and discuss their current use and respective advantages and disadvantages. Transient approaches include adeno-associated virus (AAV) and electroporation-based techniques, whereas stable genetic modification approaches make use of lentivirus (including viral stamping), transposon and CRISPR/Cas9 systems. Finally, an outlook as to likely future developments and applications regarding genetic modifications of brain organoids will be presented.

The development of brain organoids (Kadoshima et al., 2013; Lancaster et al., 2013) has opened up new ways to study brain development and evolution as well as neurodevelopmental disorders. Brain organoids are multicellular 3D structures that mimic certain aspects of the cytoarchitecture and cell-type composition of certain brain regions over a particular developmental time window (Heide et al., 2018). These structures are generated by differentiation of induced pluripotent stem cells (iPSCs) or embryonic stem cells (ESCs) into embryoid bodies followed by, or combined, with neural induction (Kadoshima et al., 2013; Lancaster et al., 2013). In principle, two different classes of brain organoid protocols can be distinguished, namely: (i) the self-patterning protocols which produce whole-brain organoids; and (ii) the pre-patterning protocols which produce brain region-specific organoids (Heide et al., 2018).

Aug 23, 2024

Scientists devise Method to Secure Earth’s Biodiversity on the Moon

Posted by in categories: biotech/medical, cryonics, education, genetics, governance, life extension

Proposed lunar biorepository could store genetic samples without electricity or liquid nitrogen. New research led by scientists at the Smithsonian proposes a plan to safeguard Earth’s imperiled biodiversity by cryogenically preserving biological material on the moon. The moon’s permanently shadowed craters are cold enough for cryogenic preservation without the need for electricity or liquid nitrogen, according to the researchers.

The paper, published today in BioScience and written in collaboration with researchers from the Smithsonian’s National Zoo and Conservation Biology Institute (NZCBI), Smithsonian’s National Museum of Natural History, Smithsonian’s National Air and Space Museum and others, outlines a roadmap to create a lunar biorepository, including ideas for governance, the types of biological material to be stored and a plan for experiments to understand and address challenges such as radiation and microgravity. The study also demonstrates the successful cryopreservation of skin samples from a fish, which are now stored at the National Museum of Natural History.

“Initially, a lunar biorepository would target the most at-risk species on Earth today, but our ultimate goal would be to cryopreserve most species on Earth,” said Mary Hagedorn, a research cryobiologist at NZCBI and lead author of the paper. “We hope that by sharing our vision, our group can find additional partners to expand the conversation, discuss threats and opportunities and conduct the necessary research and testing to make this biorepository a reality.”

Aug 23, 2024

Delivering Prime Editors With Virus-like Particles

Posted by in categories: bioengineering, biotech/medical, genetics

An iterative engineering approach to improve prime editor delivery helped scientists correct genetic vision defects in mice.

Aug 22, 2024

New Gene Delivery Method Paves the Way for Advanced Brain Therapies

Posted by in categories: genetics, neuroscience

A new study, funded by the National Institute of Mental Health and the National Institute of Neurological Disorders and Stroke, describes a promising way to carry genetic material into the brain to reach cellular targets.

Aug 18, 2024

Sources of gene expression variation in a globally diverse human cohort

Posted by in categories: evolution, genetics

A new open-access RNA sequencing dataset, MAGE, of 731 individuals across geographically diverse human populations provides a valuable resource to study genetic diversity and evolution and expands the capacity to identify new genetic associations.

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