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Category: genetics – Page 31

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Continue reading “Exosomes: 82 Year Old Longevity Biohacker Kenneth Scott’s Experience” | >

The rising trend of early-onset cancers in adults under 50, particularly women, is alarming. Genetic, lifestyle, and environmental factors contribute to this increase. Maintaining a healthy weight, quitting tobacco, avoiding alcohol, consuming fiber-rich foods, using sunscreen, and regular physical activity are small lifestyle changes that can significantly reduce cancer risk.

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Researchers at the John Innes Centre have identified a biological mechanism that helps plant roots create a more hospitable environment for beneficial soil microbes. This breakthrough has the potential to promote more sustainable farming practices by reducing the need for synthetic fertilizers.

Most major crops currently rely on nitrate and phosphate fertilizers, but excessive fertilizer use can have harmful environmental consequences. By leveraging the natural, mutually beneficial relationships between plant roots and soil microbes to improve nutrient uptake, it may be possible to significantly cut down on the use of inorganic fertilizers.

Researchers in the group of Dr Myriam Charpentier discovered a mutation in a gene in the legume Medicago truncatula that reprogrammes the signaling capacity of the plant so that it enhances partnerships with nitrogen fixing bacteria called rhizobia and arbuscular mycorrhiza fungi (AMF) which supply roots with phosphorus.

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Novel magnetic nanodiscs could provide a much less invasive way of stimulating parts of the brain, paving the way for stimulation therapies without implants or genetic modification, MIT researchers report.

The scientists envision that the tiny discs, which are about 250 nanometers across (about 1/500 the width of a human hair), would be injected directly into the desired location in the brain. From there, they could be activated at any time simply by applying a magnetic field outside the body. The new particles could quickly find applications in biomedical research, and eventually, after sufficient testing, might be applied to clinical uses.

The development of these nanoparticles is described in the journal Nature Nanotechnology, in a paper by Polina Anikeeva, a professor in MIT’s departments of Materials Science and Engineering and Brain and Cognitive Sciences, graduate student Ye Ji Kim, and 17 others at MIT and in Germany.

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Continue reading “Gut Health Impacts The Thymus And Immune System During Aging: Niharika Duggal, PhD” | >

An international team of researchers has made significant progress in understanding how gene expression is regulated across the human genome. In a recent study, they conducted a comprehensive analysis of cis-regulatory elements (CREs)—DNA sequences that control gene transcription. This research provides valuable insights into how CREs drive cell-specific gene expression and how mutations in these regions can impact health and contribute to disease.

CREs, such as enhancers and promoters, play a critical role in determining when and where genes are activated or silenced. Although their importance is well known, analyzing their activity on a large scale has been a longstanding challenge.

“The human genome contains a myriad of CREs, and mutations in these regions are thought to play a major role in human diseases and evolution,” explained Dr. Fumitaka Inoue, one of the co-first authors of the study. “However, it has been very difficult to comprehensively quantify their activity across the genome.”

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+ Decoding the secrets of DNA, CRISPR gene editing allows scientists to target specific genes linked to aging. By modifying these genes, researchers aim to prevent conditions that come with aging. Envision a future where genetic risks for age-related diseases are minimized through precise DNA editing.

It is possible to regenerate cells using stem cells, which can turn into a variety of types. In recent trials, stem cells showed promise in regenerating aged tissues like cartilage. Scientists hope to develop therapies that might slow down physical decline and maintain vitality longer by using this potential.

Nanobots could someday be the future of healthcare by targeting damaged cells directly as they move through your bloodstream. Researchers are currently exploring how nanobots might repair cellular damage and improve overall health, potentially reversing some age-related effects at the cellular level.

As the protective ends of chromosomes, telomeres shorten over time. When they become too short, cells stop functioning. In laboratory studies, researchers have extended the lifespan of animals by using telomere extension techniques. Though still experimental, this research could pave the way for human applications in slowing aging.

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Advances in human longevity are no longer science fiction. Groundbreaking discoveries in fields like genetics, nanotechnology, and regenerative medicine are unlocking the secrets of aging. These 20 developments highlight how science is changing our understanding of what it means to grow older.

Continue reading “20 Advancements That Could Push the Boundaries of the Human Lifespan” | >

Patients suffering from diseased and injured organs are often treated with transplanted organs, and this treatment has been in use for over 50 years. In 1955, the kidney became the first entire organ to be replaced in a human, when Murray transplanted this organ between identical twins. Several years later, Murray performed an allogeneic kidney transplant from a non-genetically identical patient into another. This transplant, which overcame the immunologic barrier, marked a new era in medicine and opened the door for use of transplantation as a means of therapy for different organ systems.

As modern medicine increases the human lifespan, the aging population grows, and the need for donor organs grows with it, because aging organs are generally more prone to failure. However, there is now a critical shortage of donor organs, and many patients in need of organs will die while waiting for transplants. In addition, even if an organ becomes available, rejection of organs is still a major problem in transplant patients despite improvements in the methods used for immunosuppression following the transplant procedure. Even if rejection does not occur, the need for lifelong use of immunosuppressive medications leads to a number of complications in these patients.

These problems have led physicians and scientists to look to new fields for alternatives to organ transplantation. In the 1960s, a natural evolution occurred in which researchers began to combine new devices and materials sciences with cell biology, and a new field that is now termed tissue engineering was born. As more scientists from different fields came together with the common goal of tissue replacement, the field of tissue engineering became more formally established. Tissue engineering is now defined as an interdisciplinary field which applies the principles of engineering and life sciences towards the development of biological substitutes that aim to maintain, restore or improve tissue function.

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This video provides a progress update on cutting-edge research exploring epigenetic reprogramming and small molecule cocktails for cellular rejuvenation.

Dr David Sinclair delve into the latest studies on how these approaches can potentially reverse the effects of aging at the cellular level. Topics covered include:

• The mechanisms of epigenetic reprogramming using Yamanaka factors. The development and testing of novel small molecule cocktails. Applications in various tissues and organs Research on reversing cellular senescence and restoring cell identity. The use of AI for high-throughput screening of potential rejuvenating compounds.
This update highlights recent advancements, challenges, and future directions in this exciting field of research.

* Credits to ARRD \& Dr David Sinclair*

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Columbia researchers created an AI model that predicts gene activity in any human cell, advancing disease research and treatment. It has already uncovered mechanisms behind pediatric leukemia and may reveal hidden genome functions.

Researchers at Columbia University.

Columbia University is a private Ivy League research university in New York City that was established in 1754. This makes it the oldest institution of higher education in New York and the fifth-oldest in the United States. It is often just referred to as Columbia, but its official name is Columbia University in the City of New York.

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