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The Potential for Senolytics and Other Senotherapies to Improve Outcomes in Cancer Therapies
Cellular senescence is a double-edged sword in the matter of cancer. The state of senescence is a growth arrest coupled with pressure to self-destruct and a call to the immune system to destroy the senescent cell. As such it serves as a first line of defense against cancer. Most cancer treatments force large numbers of cancerous cells into senescence, in addition to causing outright cell death, shutting down their ability to replicate. Unfortunately, the presence of too many senescent cells is harmful in and of itself, as their signaling produces chronic inflammation, disrupts tissue function throughout the body, and makes...
Source: Fight Aging! - January 28, 2021 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, January 25th 2021
In conclusion, our studies highlight the important role of the tyrosine degradation pathway and position TAT as a link between neuromediator production, dysfunctional mitochondria, and aging.
Source: Fight Aging! - January 24, 2021 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Fight Aging! Newsletter, January 18th 2021
In this study, Desferal, deferoxamine mesylate for injection, which is approved for the treatment of acute iron intoxication and chronic iron overload, was used to explore the beneficial effects on preventing aging-induced bone loss and mitigating dysfunction of aged BMSCs. High-dose Desferal significantly prevented bone loss in aged rats. Compared with controls, the ex vivo experiments showed that short-term Desferal administration could promote the potential of BMSC growth and improve the rebalance of osteogenic and adipogenic differentiation, as well as rejuvenate senescent BMSCs and revise the expression of stemness/se...
Source: Fight Aging! - January 17, 2021 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
KAT7 Inhibition via Gene Therapy Reduces Cellular Senescence in the Liver and Extends Life in Mice
Since the confirmation of cellular senescence as an important contributing cause of aging, a great many research initiatives have focused on the biochemistry of senescent cells, in search of new approaches to rejuvenation therapies. A common strategy in the life sciences is to deactivate genes one by one and observe the results, in search of suitable regulators to change cell behavior. In today's open access paper, researchers report on the results of such a screen of gene functions, identifying KAT7 as a gene important in the regulation of cellular senescence in at least the liver.
The researchers screened for gene...
Source: Fight Aging! - January 13, 2021 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, January 11th 2021
This study demonstrates the potential of a natural (o-Vanillin) and a synthetic (RG-7112) senolytic compounds to remove senescent IVD cells, decrease SASP factors release, reduce the inflammatory environment and enhance the IVD matrix production. Removal of senescent cells, using senolytics drugs, could lead to improved therapeutic interventions and ultimately decrease pain and a provide a better quality of life of patients living with intervertebral disc degeneration and low back pain.
From Ying Ann Chiao of Oklahoma Medical Research Foundation: Mitochondrial dysfunction plays a central role in aging and cardiovasc...
Source: Fight Aging! - January 10, 2021 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
A Sensible Consideration of the State of the Art in the Treatment of Aging as a Medical Condition
It used to be the case that one could write up a summary of where the research community stood on the treatment of aging as a medical condition (which was varying shades of "not that far along towards practical applications, but definitely promising if they get their act together") and then not have to update it all that much for years. Research is slow and uncertain, for one, and secondly there was, for decades, a strong cultural prejudice in the scientific community against trying to apply what was learned about aging to the treatment of aging. Little progress was made as a result.
Matters are proceeding much more...
Source: Fight Aging! - January 6, 2021 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, January 4th 2021
The objective of this study is to quantify the overall and cancer type-specific risks of subsequent primary cancers (SPCs) among adult-onset cancer survivors by first primary cancer (FPC) types and sex. Among 1,537,101 survivors (mean age, 60.4 years; 48.8% women), 156,442 SPC cases and 88,818 SPC deaths occurred during 11,197,890 person-years of follow-up (mean, 7.3 years). Among men, the overall risk of developing any SPCs was statistically significantly higher for 18 of the 30 FPC types, and risk of dying from any SPCs was statistically significantly higher for 27 of 30 FPC types as compared with risks in the general po...
Source: Fight Aging! - January 3, 2021 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
A Look Back at 2020: Progress Towards the Treatment of Aging as a Medical Condition
While I suspect that COVID-19 will feature prominently in most retrospectives on 2020, I'll say only a little on it. The data on mortality by year end, if taken at face value, continues to suggest that the outcome will fall at the higher end of the early estimates of a pandemic three to six times worse than a bad influenza year, ten times worse than a normal influenza year. The people who die are near entirely the old, the co-morbid, and the immunocompromised. They die because they are suffering the damage and dysfunction of aging. Yet the societal conversation and the actions of policy makers ignore this.
There is ...
Source: Fight Aging! - December 31, 2020 Category: Research Authors: Reason Tags: Of Interest Source Type: blogs
Fight Aging! Newsletter, December 28th 2020
In conclusion, our study demonstrated that the molecular processes of aging are relatively subtle in their progress, and the aging process of every tissue depends on the tissue's specialized function and environment. Hence, individual gene or process alone cannot be described as the key of aging in the whole organism.
Mouse Age Matters: How Age Affects the Murine Plasma Metabolome
A large part of metabolomics research relies on experiments involving mouse models, which are usually 6 to 20 weeks of age. However, in this age range mice undergo dramatic developmental changes. Even small age differences may l...
Source: Fight Aging! - December 27, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Data for COVID-19 Mortality in Older People in the US
The general consensus on mortality due to COVID-19 is that it falls most heavily on people who are more impacted by aging: poor immune function when it comes to defense against pathogens; high levels of chronic inflammation that create a greater susceptibility to the way in which SARS-CoV-2 kills people; existing chronic disease; and a mortality rate that is already high even setting aside the pandemic. When younger people die due to the virus, in much smaller numbers, it is where they share these characteristics of inflammation, deficient immune systems, and chronic disease. This level of morbidity is unusual in younger i...
Source: Fight Aging! - December 23, 2020 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Inhibition of Mitochondrial DNA Transcription as an Approach to Universal Cancer Therapy
The key to a universal cancer therapy is to find a vulnerability that is (a) common to all cancers, something fundamental to cancer as a class, (b) nowhere near as prevalent in normal cells, and (c) can be cost-effectively exploited as a basis for treatment. Lengthening of telomeres is a good example, and an area in which at least a few groups are working at an early stage. Cancer cells must employ telomerase or alternative lengthening of telomeres mechanisms to evade the Hayflick limit on replication, triggered by short telomeres, as telomere length is reduced with each cell division. Other examples include other mechanis...
Source: Fight Aging! - December 22, 2020 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
Fight Aging! Newsletter, December 21st 2020
In this study, we have found that administration of a specific Sgk1 inhibitor significantly reduces the dysregulated form of tau protein that is a pathological hallmark of AD, restores prefrontal cortical synaptic function, and mitigates memory deficits in an AD model. These results have identified Sgk1 as a potential key target for therapeutic intervention of AD, which may have specific and precise effects."
Targeting histone K4 trimethylation for treatment of cognitive and synaptic deficits in mouse models of Alzheimer's disease
Epigenetic aberration is implicated in aging and neurodegeneration. Using p...
Source: Fight Aging! - December 20, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
Shingles: What triggers this painful, burning rash?
If you’re like 95% of American adults, you had chickenpox as a kid. Before the United States started its widespread vaccination program in 1995, there were roughly four million cases of chickenpox every year. So, most people suffered through an infection with this highly contagious virus and its itchy, whole-body rash.
But unlike many childhood viruses, the varicella-zoster virus that causes chickenpox doesn’t clear from the body when the illness ends. Instead it hangs around, taking up residence and lying dormant in the nerves, sometimes for decades, with the immune system holding it in check. In some people, it lives...
Source: Harvard Health Blog - December 14, 2020 Category: Consumer Health News Authors: Kelly Bilodeau Tags: Health Healthy Aging Skin and Hair Care Vaccines Source Type: blogs
Fight Aging! Newsletter, December 14th 2020
In conclusion, aging alters the cerebral vasculature to impair mitochondrial function and mitophagy and increase IL-6 levels. These alterations may impair BBB integrity and potentially reduce cerebrovascular health with aging.
Senescent Cells Fail to Maintain Proteostasis
https://www.fightaging.org/archives/2020/12/senescent-cells-fail-to-maintain-proteostasis/
Given the newfound consensus in the research community regarding the importance of senescent cells to degenerative aging, it isn't surprising to see a great deal more fundamental research into the biochemistry of cellular senescence now taking pla...
Source: Fight Aging! - December 13, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs
MYSM1 Overexpression Extends Life in Mice via a Reduced Senescent Cell Burden
Senescent cell accumulation is an important cause of degenerative aging. Senescent cells cease replication and begin to secrete an inflammatory mix of signals that disrupt tissue structure and function. These cells are created constantly, largely as a result of somatic cells hitting the Hayflick limit on cellular replication, but also as a result of injury, molecular damage, inflammation, and the like. Near all senescent cells are rapidly destroyed, either via programmed cell death mechanisms, or via the immune system. This clearance falters with age, however, slowing down, becoming less efficient, and allowing senescent c...
Source: Fight Aging! - December 8, 2020 Category: Research Authors: Reason Tags: Medicine, Biotech, Research Source Type: blogs
