Arguing for Low Glutathione Levels to be Important in the Development of Parkinson's Disease
Glutathione is one of the more important cellular antioxidants. Delivery of glutathione via a range of mechanisms has been tested as a way to improve function in older individuals, with intriguing results in small clinical trials. The benefits include improved mitochondrial function and reduced inflammation. Delivery of antioxidants to mitochondria, where they can suppress the production of reactive oxygen species that takes place as a side-effect of the normal operation of these organelles, has been demonstrated to improve health and modestly slow aging in animal models. Unfortunately glutathione isn't orally bioavailable...
Source: Fight Aging! - March 7, 2024 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Heat Stress Produces Lasting Cellular Resilience via Formation of Tetraspanin Webs
In this study, we use a robust thermal stress paradigm in C. elegans to uncover causal mechanisms by which transient stress may exert lasting impacts on organismal resilience and longevity. We show that transient heat exposure at 28°C during late larval development activates the gene tsp-1, which encodes a C. elegans homolog of the evolutionarily conserved tetraspanin protein family. Tetraspanin 1 (TSP-1) proteins form tetraspanin web-like structures and are essential for maintaining membrane permeability, barrier functions, and heat-induced organismal resilience and longevity. Initial induction of tsp-1 by heat requires ...
Source: Fight Aging! - March 6, 2024 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Catalase to Reduce Mitochondrial Oxidative Stress Does Not Reduce Cellular Senescence
Every cell contains hundreds of mitochondria, the descendants of ancient symbiotic bacteria now integrated into the cell. Mitochondria generate oxidative molecules as a consequence of the processes that generate the chemical energy store molecule adenosine triphosphate (ATP), used to power the cell. Those oxidative molecules cause damage, near all rapidly repaired. They also serve as signals, such as in the beneficial response to exercise. With aging, however, mitochondrial function becomes impaired and the degree of oxidative stress generated by the operation of mitochondria becomes harmful.
Researchers have in the...
Source: Fight Aging! - March 5, 2024 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Human Data on Epigenetic Age Following Senolytic Treatment
This study aimed to assess the effects of Dasatinib and Quercetin (DQ) senolytic treatment on DNA methylation (DNAm), epigenetic age, and immune cell subsets. In a Phase I pilot study, 19 participants received DQ for 6 months, with DNAm measured at baseline, 3 months, and 6 months. The age range of these individuals that were considered in the first study analyses were between 43.0 and 86.6.
Significant increases in epigenetic age acceleration were observed in first-generation epigenetic clocks and mitotic clocks at 3 and 6 months, along with a notable decrease in telomere length. However, no significant differences...
Source: Fight Aging! - March 4, 2024 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, March 4th 2024
In conclusion, HSV (but not CMV) infection may be indicative of doubled dementia risk.
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Increased Dietary Leucine Activates mTOR Signaling in Macrophages, Accelerating Atherosclerosis
https://www.fightaging.org/archives/2024/02/increased-dietary-leucine-activates-mtor-signaling-in-macrophages-accelerating-atherosclerosis/
Leucine is an essential amino acid, only obtained from the diet rather than synthesized by our cells. Leucine supplementation has been proposed as a way to slow the loss of muscle mass with age, as leucine processing becomes dysregulated with aging in a way...
Source: Fight Aging! - March 3, 2024 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Patentability – Impacts of Biotechnology following Association for Molecular Pathology v Myriad Genetics and D’Arcy v Myriad Genetics
Theresa-Marie Shaw (University of Queensland), Patentability – Impacts of Biotechnology following Association for Molecular Pathology v Myriad Genetics and D’Arcy v Myriad Genetics (2024): In Association for Molecular Pathology v Myriad Genetics Inc ‘Myriad’ and D’Arcy v Myriad Genetics Inc... (Source: HealthLawProf Blog)
Source: HealthLawProf Blog - March 3, 2024 Category: Medical Law Authors: Katharine Van Tassel Source Type: blogs
What is Known of the Contribution of Cellular Senescence to Osteoporosis
The vast majority of senescent cells are produced when somatic cells reach the Hayflick limit to cell division, their telomeres shortened to a point at which they either self-destruct or enter the senescent state. Damage due to mutation or cytotoxic compounds can also induce senescence, as can the regenerative processes following injury. Senescent cells cease replication, become larger, and change their behavior in many other ways. Senescent cells secrete a pro-growth, pro-inflammatory mix of signals, the senescence-associated secretory phenotype (SASP), that attracts the attention of immune cells capable of destroying sen...
Source: Fight Aging! - March 1, 2024 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
NPTX2 Involved in Neurodegeneration Driven by TDP-43 Aggregation
Altered, misfolded forms of TDP-43 are thought to contribute to neurodegeneration in a number of age-related conditions, primarily amyotrophic lateral sclerosis and frontotemporal dementia. As is the case for other misfolded proteins associated with neurodegeneration, aberrant TDP-43 may accumulate in much of the older population to levels sufficient to meaningfully contribute to cognitive decline. That TDP-43 has this negative impact is a relatively recent discovery, and in comparison to amyloid-β, tau, and α-synuclein little is known of the mechanisms by which TDP-43 aggregation causes dysfunction and death in brain ce...
Source: Fight Aging! - February 29, 2024 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Unlearn Raises $50 Million Series C to Optimize Clinical Research With AI-Powered Digital Twin Technology
Using Novel Digital Twins of Clinical Trial Participants, Unlearn is Accelerating Clinical Research to Help Bring New Treatments to Patients Sooner
Unlearn, an AI company creating digital twins of clinical trial participants that enable smaller, faster studies, today announced a $50M Series C round led by Altimeter Capital, joined by returning investors Radical Ventures, Wittington Ventures, Mubadala Capital, Epic Ventures, and Necessary Venture Capital. This round of funding was secured to propel the company’s mission to advance AI to eliminate trial and error in medicine by investing in its people, data, engineering ca...
Source: EMR and HIPAA - February 29, 2024 Category: Information Technology Authors: Healthcare IT News Tags: Health IT Company Healthcare IT 8VC Altimeter Capital Charles Fisher DCVC DCVC Bio Epic Ventures Health IT Funding Health IT Fundings Health IT Investment Insight Partners Mubadala Capital Necessary Venture Capital Pauline Yang Source Type: blogs
Why Don't Biotech Investors Run Replication Studies Before Investing?
Ichor Life Sciences is one of the earliest longevity industry companies, an interesting mix of contract research organization (CRO), biotech working on several different therapeutics, and investor in very early stage biotech startups. One of the Ichor co-founders here offers an interesting, though possibly biased perspective on how investors should behave in the biotech space. Inside companies, every new development program in the biotech industry starts with an attempt to replicate the research results that form the basis for the program, even given the existence of detailed, published papers and a coven of accessible res...
Source: Fight Aging! - February 28, 2024 Category: Research Authors: Reason Tags: Longevity Industry Source Type: blogs
An Update on Progress Towards Treating Atherosclerosis at Cyclarity
Today I'll point out an interview with one of the Cyclarity Therapeutics founders, illustrative of the degree to which biotech companies are at the mercy of regulators once they arrive at the clinical stage of development. Cyclarity, formerly Underdog Pharmaceuticals, is a spin-out from the SENS Research Foundation, an organization that aims to clear roadblocks in the translational research needed for the production of rejuvenation therapies. The program that led to Cyclarity was focused on finding a way to clear 7-ketocholesterol from the body. 7-ketocholesterol is a form of oxidized cholesterol, created as a result of ox...
Source: Fight Aging! - February 27, 2024 Category: Research Authors: Reason Tags: Longevity Industry Source Type: blogs
Post-AGBT: Both Element & Singular Want Spatial to Go With The Flow(cells)
Element Biosciences and Singular Genomics have often appeared to be on roughly parallel trajectories, though with key differences. Both companies launched sequencing instruments with NextSeq 2000-like specifications and largely aimed at the academic core lab and small biotech company market. At AGBT, both announced upgrades to their sequencing instruments that allow the instrument to perform spatial omics while still funct ioning as a sequencer. But there are key differences in their approach and what we know about each company and their degree of success so far in the sequencer market.Read more » (Source: Omics! Omics!)
Source: Omics! Omics! - February 27, 2024 Category: Bioinformatics Authors: Keith Robison Source Type: blogs
Telomere Length as a Target for Therapy
Average telomere length in a tissue is some reflection of (a) stem cell activity and (b) pace of cell division. Telomeres, repeated DNA sequences at the ends of chromosomes, lose some of their length with each cell division, and cells self-destruct or become senescent when telomeres become too short. This limits the ability of somatic cells to replicate, reducing the odds that a given cell will mutate to become cancerous by imposing a limit on cell activity and cell life span, enforcing turnover of cells in tissues. Stem cells, in comparison, are a small, well protected, privileged set of cell populations that use telomera...
Source: Fight Aging! - February 26, 2024 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, February 26th 2024
In conclusion, mTORC1 signaling contributes to the ISC fate decision, enabling regional control of intestinal cell differentiation in response to nutrition.
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Reviewing the Development of Senotherapeutics to Treat Aging
https://www.fightaging.org/archives/2024/02/reviewing-the-development-of-senotherapeutics-to-treat-aging/
Senescent cells accumulate with age and contribute meaningfully to chronic inflammation and degenerative aging. Destroying these cells produces rapid and sizable reversal of age-related diseases in mice, demonstrating that the presence of senescence cells ...
Source: Fight Aging! - February 25, 2024 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
An Update on Kimer Med, Improving on the DRACO Antiviral Technology and Moving Towards the Clinic
The state of anti-viral therapies isn't that great, all things considered. Technology has not yet advanced to the point at which a viral infection can be simply shut down, as is the case for near all bacterial infections. The present anti-viral drugs are either vaccines (useful!) or merely shift the odds somewhat by interfering in some part of the viral life cycle, but nowhere near as effectively as desired. Many persistent viral infections are thought to contribute meaningfully to forms of age-related dysfunction, and there is too little that can be done about that at the present time.
This landscape is one of the ...
Source: Fight Aging! - February 23, 2024 Category: Research Authors: Reason Tags: Longevity Industry Source Type: blogs
