BUFFALO, NY- October 16, 2024 – A new #review was #published in Oncotarget's Volume 15 on October 1, 2024, entitled, “Molecular chaperones: Guardians of tumor suppressor stability and function.”

As highlighted in the abstract of this paper, "tumor suppressor" describes a diverse set of genes typically involved in suppressing metastasis, but which can lead to tumorigenesis when loss-of-function mutations occur. Despite the varied structures and functions of tumor suppressor proteins, many share a common regulatory mechanism—they are "clients" of molecular chaperones, and they rely on an intracellular network of chaperones and co-chaperones to maintain their stability. Mutations in tumor suppressors that disrupt proper chaperoning prevent cells from maintaining sufficient protein levels for normal physiological function.

In their review, researchers Jennifer A. Heritz, Sarah J. Backe, and Mehdi Mollapour from SUNY Upstate Medical University and New York VA Health Care in Syracuse, New York, discuss the role of molecular chaperones Hsp70 and Hsp90 in maintaining the stability and functional integrity of tumor suppressors. They also detail the contributions of co-chaperones prefoldin, HOP, Aha1, p23, FNIP1/2, and Tsc1, as well as the chaperonin TRiC, to tumor suppressor stability.

“Overall, it is clear that oncogenesis can result from the dysregulation of tumor suppressor stabilization by chaperones.”

DOI - https://doi.org/10.18632/oncotarget.28653

Correspondence to - Mehdi Mollapour - mollapom@upstate.edu

Video short - https://www.youtube.com/watch?v=V5OFjeqaH3A

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Keywords - cancer, molecular chaperone, tumor suppressor, renal cell carcinoma, Birt-Hogg-Dubé (BHD) syndrome, TSC syndrome

About Oncotarget 

Oncotarget (a primarily oncology-focused, peer-reviewed, open access journal) aims to maximize research impact through insightful peer-review; eliminate borders between specialties by linking different fields of oncology, cancer research and biomedical sciences; and foster application of basic and clinical science.

Oncotarget is indexed and archived by PubMed/Medline, PubMed Central, Scopus, EMBASE, META (Chan Zuckerberg Initiative) (2018-2022), and Dimensions (Digital Science).

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Oncotarget

Molecular Chaperones: Guardians of Tumor Suppressor Stability

Fasting and intermittent fasting have been in the news in recent months. In this episode, Faiza Kalam, PhD, MD, director of the James Food, Activity Sleep and Time (FACT) Lab explains the basics and how fasting and intermittent fasting can lead to improved cholesterol, LDL and blood pressure levels and rates and help people lose weight without the use of weight-reducing drugs that can have side effects. Fasting can also help cancer patients during their treatment. “The initial research has shown there is less fatigue and better quality of life for cancer patients during chemotherapy treatment who fast,” said Kalam.

Episode 199: How fasting can affect cancer treatment, with Faiza Kalam, PhD, MD

BUFFALO, NY — November 5, 2025 — A new #research paper was #published in Volume 17, Issue 10 of Aging-US on September 10, 2025, titled “Longitudinal associations of epigenetic aging with cognitive aging in Hispanic/Latino adults from the Hispanic Community Health Study/Study of Latinos.”

In this study led by Myriam Fornage, from The University of Texas Health Science Center at Houston, researchers found that faster biological aging, measured by DNA-based epigenetic clocks, is associated with greater cognitive decline and higher risk of mild cognitive impairment (MCI) in Hispanic/Latino adults. The results highlight the potential of epigenetic clocks to track changes in brain health over time, helping improve early detection and monitoring of age-related cognitive problems.

Cognitive decline and dementia are major public health concerns, especially among aging populations. In this study, researchers followed 2671 Hispanic/Latino adults (average age 57; 66% women) over a seven-year period. They measured each participant’s biological age using epigenetic clocks and assessed their cognitive performance at two time points.

“We evaluated the associations of 5 epigenetic clocks and their between-visit change with multiple measures of cognitive aging that included a global and domain-specific cognitive function score at each visit, between-visit change in global and domain-specific cognitive function score, and MCI diagnosis at visit 2 (V2).”

Epigenetic clocks estimate biological age based on DNA chemical modifications, called methylation, that accumulate with age. The study evaluated five different clocks, including newer models like GrimAge and DunedinPACE, which are designed to more accurately reflect health-related aging.

The researchers found that individuals with faster biological aging showed lower cognitive function and higher probability of developing MCI over time. Among the five clocks studied, newer models such as GrimAge and DunedinPACE showed the strongest associations with memory, processing speed, and overall brain health. These findings suggest that tracking changes in biological age over time may be more effective than relying on a single measurement to identify those at risk for cognitive impairment.

Importantly, the associations between biological aging and cognitive decline remained significant even after accounting for other known risk factors such as education, language preference, and cardiovascular health. This supports the idea that epigenetic clocks capture unique biological processes that influence brain aging. The study also found that the impact of changes in biological age over time was comparable to that of APOE4, a well-established genetic risk factor for Alzheimer’s disease.

Overall, this is the first large-scale study to examine these associations in a Hispanic/Latino population, a group that is underrepresented in aging research. By identifying early biological signs of brain aging, this work highlights the potential of epigenetic clocks as tools for routine health assessments. Monitoring changes in these biological markers could help detect individuals at risk for cognitive decline and guide timely interventions to preserve brain health.

DOI - https://doi.org/10.18632/aging.206317

Corresponding author - Myriam Fornage - Myriam.Fornage@uth.tmc.edu

Abstract video - https://www.youtube.com/watch?v=kG0Y-F_sods

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Aging-US

Epigenetic Aging Linked to Cognitive Decline in Hispanic/Latino Adults

Prostate cancer is one of the most common cancers in men. While treatment options have improved, advanced stages of the disease remain difficult to manage. One promising approach involves a process called ferroptosis. This is a type of programmed cell death that relies on iron and lipid oxidation to kill cancer cells by damaging specific fats in their outer membrane. These fats are especially vulnerable in environments with normal oxygen levels.

However, many prostate tumors grow in low-oxygen areas of the body, a condition known as hypoxia, where ferroptosis becomes less effective. A recent study, titled “Hypoxia induced lipid droplet accumulation promotes resistance to ferroptosis in prostate cancer,” and published on Oncotarget (Volume 16), explores how oxygen-poor environments help prostate cancer cells resist treatment and what strategies could help overcome this resistance.

Full blog - https://www.oncotarget.org/2025/11/06/how-low-oxygen-shields-prostate-cancer-from-ferroptosis-therapies/

Paper DOI - https://doi.org/10.18632/oncotarget.28750

Correspondence to - Noel A. Warfel - warfelna@arizona.edu, and Shailender S. Chauhan - shailenderc@arizona.edu

Abstract video - https://www.youtube.com/watch?v=xFypDT4ALmc

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Keywords - cancer, hypoxia, lipid droplets, ferroptosis, resistance, prostate

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How Low Oxygen Shields Prostate Cancer from Ferroptosis Therapies

BUFFALO, NY - November 10, 2025 – A new #research paper was #published in Oncotarget (Volume 16) on November 6, 2025, titled “Anti-DNA virus agent cidofovir - loaded green synthesized cerium oxide nanoparticles (Nanoceria): Nucleic acids (DNA and RNA) binding affinity and cytotoxicity effects.”

In this study, led by Nahid Shahabadi from Razi University in Kermanshah, researchers developed an environmentally friendly approach to enhance the performance of cidofovir, a drug used to treat infections caused by DNA viruses. The work responds to the growing need for therapies that are safer, more effective, and better targeted.

The research team developed a new compound by loading cidofovir onto green-synthesized cerium oxide nanoparticles (nanoceria), known as CDV-CeO2 NPs. This method combines the drug’s antiviral and anticancer properties with the biological activity of nanoceria, which is known for its antioxidant, anti-inflammatory, and tumor-targeting effects. To avoid toxic chemicals, the nanoparticles were synthesized using quince fruit peel extract, making the process more sustainable and suitable for medical applications.

Laboratory experiments showed that the CDV-CeO2 nanoparticles were significantly more effective at killing breast cancer cells than either cidofovir or cerium oxide nanoparticles alone. At the highest tested concentration, the new compound destroyed more than 97% of cancer cells, compared to 72% with cidofovir alone and 50% with nanoparticles alone. These findings suggest that the combined formulation enhances anticancer activity and may allow for lower drug doses with fewer side effects.

To understand how these nanoparticles interact with genetic material, the team studied their binding to DNA and RNA, two key molecules involved in cancer development and viral replication. CDV-CeO2 nanoparticles showed strong binding affinity through two mechanisms: groove binding, which fits into natural curves of the genetic molecule strands, and intercalation, which inserts between base pairs. The nanoparticles formed stable complexes that responded to temperature, indicating reliable interactions in biological systems.

“The novelty of this work lies in the innovative green synthesis method, the dual-functional therapeutic application, and the enhanced biological activity of the CDV-CeO2 NPs, which collectively position these nanoparticles as promising candidates for future cancer and antiviral therapies.”

This research presents a potential new strategy for improving drug targeting and delivery using green nanotechnology. The approach could lead to more effective treatments for diseases such as breast cancer and infections caused by human papillomavirus (HPV) and other DNA viruses. However, further research, including animal and clinical studies, is needed to confirm the safety and long-term effectiveness of this treatment.

Overall, this study represents a significant step toward combining natural materials with nanomedicine to create more efficient therapies. If supported by future research, CDV-CeO2 nanoparticles could offer a new generation of dual-action treatments.

DOI - https://doi.org/10.18632/oncotarget.28774

Correspondence to - Nahid Shahabadi - nahidshahabadi@yahoo.com

Abstract video - https://www.youtube.com/watch?v=Il9CsfgO2mU

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Eco-Friendly Nanoparticles Improve Cidofovir’s Anticancer and Antiviral Effects

BUFFALO, NY — November 11, 2025 — A new #research paper was #published in Volume 17, Issue 10 of Aging-US on October 1, 2025, titled “L-β-aminoisobutyric acid (L-BAIBA) in combination with voluntary wheel running exercise enhances musculoskeletal properties in middle-age male mice.”

In this study led by first author Julian A. Vallejo and corresponding author Michael J. Wacker from the University of Missouri, Kansas City, researchers investigated how L-β-aminoisobutyric acid (L-BAIBA), a natural compound released during exercise, works together with regular physical activity to improve muscle and bone health in middle-aged male mice. The findings may support new strategies to maintain musculoskeletal health in aging populations, especially those at risk for mobility loss or osteoporosis.

Muscle and bone strength naturally decline with age, increasing the risk of falls, fractures, and reduced quality of life. While exercise remains the most effective way to counteract this deterioration, it is often difficult for older individuals to maintain sufficient activity levels to see results. L-BAIBA, a molecule naturally produced during physical activity, is known to promote energy metabolism and support muscle and bone cells. This study explored its potential to work in synergy with endurance exercise to maximize health benefits in aging bodies.

Researchers studied 12-month-old male mice that were split into different groups. Some remained sedentary, while others exercised freely on running wheels. Half of each group received daily L-BAIBA supplementation. After three months, the mice that received both the supplement and exercise showed greater improvements than those receiving either one alone. The soleus, a slow-twitch muscle essential for endurance and balance, grew larger and stronger only in the combined treatment group. These muscles also shifted to a more fatigue-resistant fiber type and had a larger number of oxidative fibers.

“To investigate this hypothesis, we subjected 12-month-old (as a model of middle-age) male C57BL6 mice to voluntary wheel running (VWR) with L-BAIBA (100mg/kg/day) (VWR+L-BAIBA), VWR alone, L-BAIBA alone, or none (CTRL) for three months.”

The study also showed significant improvements in bone health. Mice that received both exercise and L-BAIBA developed thicker and denser trabecular bone, along with reduced fat levels in the bone marrow, indicators of stronger, healthier bones. These changes were not observed in the groups that only exercised or only received L-BAIBA. Although the compound caused minor changes in heart electrical activity, it did not affect heart size or overall function, suggesting it is safe in this setting.

These findings suggest that L-BAIBA may enhance the benefits of physical activity by supporting muscle strength and bone structure, particularly in slow-twitch muscle fibers. This combination could serve as a therapeutic strategy to help older adults, including those unable to engage in regular exercise, maintain musculoskeletal health.

As the aging population grows, there is a growing need for solutions that support muscle and bone health without requiring strenuous activity. This research highlights the potential of natural, exercise-related molecules like L-BAIBA to help maintain mobility and strength throughout aging.

DOI - https://doi.org/10.18632/aging.206325

Corresponding author - Michael J. Wacker — wackerm@umkc.edu

Abstract video - https://www.youtube.com/watch?v=A-zfrLUikfQ

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Exercise and L-BAIBA Supplement Boost Muscle and Bone Health in Aging Mice

Synucleinopathies are a group of age-related neurological disorders, including Parkinson’s disease, dementia with Lewy bodies, and multiple system atrophy. Most individuals are not diagnosed until these diseases have significantly progressed, as early symptoms, such as a reduced sense of smell, subtle cognitive or motor changes are too vague to serve as reliable indicators. 

To uncover specific biological signs that appear earlier and clearly point to the disease process, researchers from Saarland University developed a study titled “Brain region-specific and systemic transcriptomic alterations in a human alpha-synuclein overexpressing rat model,” featured as the cover Aging-US, Volume 17, Issue 10.

Full blog - https://aging-us.org/2025/11/alpha-synuclein-overexpression-in-rats-reveals-early-clues-to-synucleinopathies/

Paper DOI - https://doi.org/10.18632/aging.206331

Corresponding author - Thomas Hentrich - thomas.hentrich@uni-saarland.de

Abstract video - https://www.youtube.com/watch?v=Yl6AfVchkb0

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Keywords - aging, alpha-synuclein, transgenic rat model, different brain regions, transcriptome analysis

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Alpha-Synuclein Overexpression in Rats Reveals Early Clues to Synucleinopathies

We practice meditation because the present moment is the only place where we can truly find ourselves, love others, and be loved by the divine. This is why we gather, why we sit, why we breathe together. We practice surrendering to what lies beyond our control and responding rather than reacting to life's challenges. We cultivate curiosity about what's arising within and around us, learning to do difficult things like changing and growing. Because we trust there's a limitless reservoir of strength, compassion, and resilience flowing through us at every moment. 


Host: Brandon Nappi 


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71: "Why We Practice" - reflection and meditation with Brandon Nappi

BUFFALO, NY - November 12, 2025 – A new #research paper was #published in Oncotarget (Volume 16) on November 6, 2025, titled “LRIG1-3 in gliomas: LRIG1 protein expression decreased in higher grade gliomas.”

In this study by Marlene Happe, Saskia Kuhl, Lukas Görtz, Roland Goldbrunner and Marco Timmer, from the University of Cologne, researchers found that the LRIG1 protein, which may help suppress tumors, is present at lower levels in more aggressive gliomas, a type of brain tumor. The findings suggest that LRIG1 could serve as a useful marker for tumor severity and potentially as a target for future therapies.

Gliomas are the most common malignant brain tumors in adults and carry a poor prognosis, particularly in their most severe form, glioblastoma. This study investigated three related proteins: LRIG1, LRIG2, and LRIG3, which are involved in regulating cell growth signals. While LRIG1 and LRIG3 have shown tumor-suppressing effects in previous studies, LRIG2 is thought to support tumor growth. The researchers analyzed tumor samples from patients to understand how these proteins behave across different glioma grades and how they respond to chemotherapy.

The results showed that LRIG1 protein levels decline significantly as tumor grade increases. Low-grade gliomas displayed much higher LRIG1 expression than high-grade tumors. Among high-grade tumors, primary glioblastomas had the lowest levels of LRIG1. Interestingly, secondary glioblastomas, which typically develop from lower-grade tumors, had higher levels of LRIG1 than primary glioblastomas. This difference may contribute to their relatively better clinical outcomes. These results highlight LRIG1’s potential role in slowing tumor progression.

In contrast, LRIG2 showed a more complex pattern. While its gene expression was higher in lower-grade tumors, the actual protein levels were slightly elevated in higher-grade ones, which are more aggressive. This mismatch suggests that processes occurring after gene transcription may influence how much LRIG2 protein is produced. 

“However, our data on LRIG2 indicate that its role in glioma may be more complex than previously thought, warranting further investigation.”

Concerning LRIG3, it was found in higher amounts in glioma tissue compared to surrounding healthy tissue. Its expression was particularly high in low-grade tumors. However, chemotherapy did not consistently affect LRIG3 levels, and results varied depending on tumor type and treatment status.

Overall, the study suggests that members of the LRIG protein family, especially LRIG1, could serve as important biomarkers to distinguish between glioma types and grades. Although chemotherapy did not significantly change their expression in most cases, these proteins have high potential as diagnostic tools or therapeutic targets. Further research is needed to better understand their roles in glioma development and treatment response.

DOI - https://doi.org/10.18632/oncotarget.28775

Correspondence to - Marco Timmer - marco.timmer@uk-koeln.de

Abstract video - https://www.youtube.com/watch?v=ZHsKLBEyBbM

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Keywords - cancer, oncology, glioma, glioblastoma, LRIG1, LRIG2, LRIG3

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Lower LRIG1 Expression Linked to Aggressive Gliomas

Aging-US proudly sponsored the Future of Aging Research (FAR) Mixer 2025, hosted by the Aging Initiative on November 7 in Cambridge, MA, uniting students, researchers, and biotechnology leaders to advance aging research and shape a healthier, longer-lived future.

Highlights from the FAR Mixer 2025

The 2025 FAR Mixer featured keynote speaker Dr. Kristen Fortney, Co-Founder and CEO of BioAge Labs, who shared insights into how translational research and clinical pipelines have evolved over the past decade. 

Dr. Fortney highlighted how obesity-targeting drugs are opening new avenues for metabolic and aging research. She explained that while obesity and osteoporosis are currently major therapeutic priorities, the next wave of reimbursable diseases will likely focus on muscle loss and chronic inflammation, reflecting their growing recognition as key factors in healthy aging. 

She also emphasized the importance of human databases in target discovery, cross-sector partnerships between pharma and biotech, and the increasing focus on small-molecule interventions to address age-related diseases.

Focus talks showcased the diversity and depth of modern aging research.

Full recap - https://aging-us.org/2025/11/aging-us-supports-the-future-of-aging-research-mixer-2025/

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Aging-US Supports the Future of Aging Research Mixer 2025

BUFFALO, NY — November 13, 2025 — A new #research paper was #published in Volume 17, Issue 10 of Aging-US on October 3, 2025, titled “The role of phenylalanine and tyrosine in longevity: a cohort and Mendelian randomization study.”

In this study led by Jie V. Zhao, Yitang Sun, Junmeng Zhang, and Kaixiong Ye from the University of Hong Kong and the University of Georgia, researchers investigated whether two amino acids, phenylalanine and tyrosine, affect  how long people live (lifespan). The results suggest that higher levels of tyrosine are linked to shorter life expectancy in men, pointing to potential sex-specific approaches to promoting longevity.

Phenylalanine and tyrosine are amino acids involved in metabolism and brain function. Both are found in protein-rich foods and dietary supplements, but their long-term effects on aging are not well understood. Tyrosine, in particular, is a building block of neurotransmitters such as dopamine, which regulate mood and cognitive function, making it a molecule of interest in aging research.

The study analyzed data from more than 270,000 individuals in the UK Biobank. Using both observational and genetic methods, the researchers examined the associations between blood levels of phenylalanine and tyrosine with overall mortality and predicted lifespan. Although both amino acids were initially linked to higher mortality risk, only tyrosine showed a consistent and potentially causal association with reduced life expectancy in men. Genetic analyses estimated that elevated tyrosine levels could shorten men’s lifespan by nearly one year. No significant effect was observed in women.

These findings remained consistent even after adjusting for related factors, including the role of phenylalanine. This suggests that tyrosine may independently influence aging. The researchers also observed that men tend to have higher tyrosine levels than women, which could partly explain the gender gap in lifespan.

“Phenylalanine showed no association with lifespan in either men or women after controlling for tyrosine.”

The exact mechanisms behind this effect are still under investigation. However, tyrosine’s involvement in insulin resistance and the production of stress-related neurotransmitters may be contributing factors. Insulin resistance is associated with many age-related diseases, and hormone-related pathways influenced by tyrosine may differ between men and women, potentially explaining the sex-specific outcomes.

Although tyrosine is commonly marketed as a supplement for enhancing focus and mental performance, the study raises concerns about its long-term impact on lifespan. While the researchers did not directly study tyrosine supplementation, their findings suggest that people with high tyrosine levels may benefit from dietary adjustments. Strategies such as protein restriction could help reduce tyrosine levels and support healthier aging.

Further studies are needed to confirm these findings and explore whether diet and lifestyle changes can safely lower tyrosine levels to promote longevity.

DOI - https://doi.org/10.18632/aging.206326

Corresponding author - Jie V. Zhao - janezhao@hku.hk

Abstract video - https://www.youtube.com/watch?v=rr0G44TD36M

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High Tyrosine Levels Linked to Shorter Lifespan in Men

Oncotarget is a primarily oncology-focused, peer-reviewed, open access journal. Papers are published continuously within yearly volumes in their final and complete form and then quickly released to Pubmed.

Oncotarget is now indexed by MEDLINE, PubMed and PMC/PubMed.

Read about the Oncotarget Scientific Integrity Process: https://www.oncotarget.com/scientific_integrity/

Molecular Chaperones: Guardians of Tumor Suppressor Stability

Oncotarget Podcast

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