Research
Metabolic changes associated with ageing impact immune responses against tumours

A new study has found a surprising link between high levels of methylmalonic acid and the weakening of CD8+ T cells, shedding light on potential pathways through which ageing may promote lung cancer progression.
Moffitt Cancer Center researchers have found new insights into how metabolic changes associated with aging can impact immune responses against tumours.
Their study, published in Oncogene, explores how increased methylmalonic acid impairs the activation and effector functions of CD8+ T cells, immune cells that play a vital role in fighting cancer.
Methylmalonic acid levels are normally low in healthy individuals. Elevated levels have been linked to aging and vitamin B12 deficiency, raising questions about their role in cancer biology.
“Our research shows that methylmalonic acid not only increases with age but also makes CD8+ T cells weaker by disrupting their energy production,” said Ana Gomes, Ph.D., lead author on the study and principal investigator in the Molecular Oncology Department at Moffitt.
“This makes it harder for the immune system to fight cancer, suggesting that targeting methylmalonic acid could help improve cancer treatment.”
Researchers found that methylmalonic acid treatment significantly reduced the activity of CD8+ T cells, an important component of the immune response to tumours. The study’s results indicate that methylmalonic acid influences global gene expression in these cells, leading to the downregulation of key pathways involved in immune activation and metabolism.
The study also highlights the role of methylmalonic acid in skewing the tumour microenvironment, affecting not only T cells but also other immune cells, potentially contributing to a more favourable environment for tumour growth and metastasis.
These findings suggest that strategies aimed at reducing methylmalonic acid levels or counteracting its effects on CD8+ T cells could enhance antitumor immunity, particularly in older patients who are at greater risk for lung cancer.
News
BioAge expands drug into diabetic macular oedema

BioAge Labs is expanding its lead drug candidate into diabetic macular oedema, with plans to start a phase 1b/2a trial in mid-2026.
The clinical-stage biotechnology company will test BGE-102, an oral therapy, in patients with the condition, which is one of the most common causes of vision impairment among people with diabetes.
Diabetic macular oedema occurs when persistently high blood sugar damages the small blood vessels in the retina, the light-sensitive tissue at the back of the eye, leading to fluid leakage and distorted vision.
While the condition is linked to diabetes, its progression is tied to chronic inflammation.
Current treatments focus on managing damage after it has begun. Patients often receive regular injections directly into the eye, sometimes monthly, to control swelling and preserve sight.
These therapies can be effective, but they are invasive, time-intensive and difficult to sustain over years.
Kristen Fortney is chief executive and co-founder of BioAge.
She said: “NLRP3 sits at the apex of this cascade, and BGE-102 offers the potential to deliver broader anti-inflammatory benefit in an oral formulation, which could meaningfully reduce treatment burden for patients with serious, sight-threatening conditions who currently require frequent intravitreal injections.”
BGE-102 is an oral NLRP3 inhibitor, designed to dampen inflammation at its source.
NLRP3 is a protein that drives inflammatory signalling and becomes increasingly active with age and metabolic stress.
When overactivated, it triggers signals that damage tissues throughout the body, including the retina.
What BioAge says makes BGE-102 notable in ophthalmology is its potential to reach the retina via oral dosing, a barrier many drugs struggle to cross.
If successful, this could reduce the treatment burden for patients who currently rely on frequent eye injections.
In early laboratory studies designed to mimic diabetic eye disease, BGE-102 helped keep the retina’s tiny blood vessels intact.
In studies examining ageing in the retina more broadly, blocking NLRP3 reduced the build-up of lipofuscin, a toxic waste material that accumulates in eye cells over time and is linked to degenerative vision loss, by roughly 80 per cent.
In an ongoing phase 1 trial, the drug has been well tolerated and reduced inflammatory signals in the body, including markers linked to cardiovascular and metabolic ageing.
The phase 1b/2a trial will test BGE-102 on its own and alongside existing treatments, aiming to show whether the drug calms the inflammation that damages vision over time.
Researchers will track changes in IL-6, a key inflammatory signal, within the eye, alongside measures of vision and retinal swelling. Results are expected in mid-2027.
The eye study will run alongside BioAge’s ongoing cardiovascular trial.
The company describes BGE-102 as a potential “pipeline in a pill”, targeting NLRP3-driven inflammation across cardiovascular, central nervous system and ocular diseases.
Insights
USC funds AI projects for Alzheimer’s trials

The USC Clinical Trial Recruitment Lab will fund four projects testing how AI can strengthen recruitment for Alzheimer’s trials.
The initiative, dedicated to accelerating and improving Alzheimer’s clinical trials, selected the projects from more than 30 applicants to explore digital approaches.
Alzheimer’s clinical trials are more complex, costlier and take longer than those in other therapeutic areas, despite the pressing need for new treatments.
The lab evaluates innovative recruitment strategies to improve access and representation in trials, with the goal of identifying scalable evidence-based recruitment practices.
The USC Clinical Trial Recruitment Lab is a collaboration between the USC Schaeffer Center for Health Policy and Economics and the USC Epstein Family Alzheimer’s Therapeutic Research Institute.
The four projects will explore the following strategies.
- Miriam Ashford at University of California, San Francisco will develop and test a generative AI voice agent to support remote informed consent and assess patient capacity for Alzheimer’s clinical trials.
- Erika Cottrell at OCHIN, a national network of community health centres, and Vijaya Kolachalama at Cognimark will integrate an AI-enabled diagnostic platform into primary care electronic health record workflows to support earlier identification and referral of patients.
- Andrew Kiselica at University of Georgia will establish a digitally enabled, trial-ready cohort of rural older adults to improve recruitment, participant selection and engagement.
- Raeanne Moore at University of California, San Diego will leverage electronic health record portals and digital cognitive assessments to accelerate prescreening and better match potential participants.
An estimated 5.6 million Americans are living with Alzheimer’s and related dementias, a number expected to increase dramatically in the coming decades as the population ages.
An extensive therapeutic development pipeline and new early-detection approaches, such as diagnostic blood tests and advanced digital tools, have the potential to reduce the burden of the disease.
However, fewer than one per cent of eligible individuals participate in Alzheimer’s therapeutic trials due to barriers that include limited patient awareness, health system resource constraints and lack of access to diagnostics, according to research from USC Schaeffer.
Certain populations at higher risk for the disease, including Black and Hispanic patients, remain underrepresented.
“We can only innovate as quickly as we can test new therapies,” said Dana Goldman, founding director of the USC Schaeffer Institute.
“That’s why it’s crucial we keep expanding the toolkit of evidence-based recruitment strategies for running faster, better trials.”
The lab previously funded six pilots, some of which have already yielded insights.
For example, one found remote blood collection could help identify potential participants, while another showed that offering a small gift card significantly increased enrolment in an online memory concerns registry.
“Faster and more effective recruitment is essential, and we’re excited to incorporate these solutions in an integrated way as part of our clinical trials,” said Paul Aisen, founding director of the USC Epstein Family Alzheimer’s Therapeutic Research Institute.
“As studies move earlier into pre-symptomatic disease, this opens the door to new recruitment paradigms, and continuing to push forward the science of recruitment will be critical to what comes next in Alzheimer’s research.”
News
Nanoparticles target disease proteins in dementia

Scientists have developed a nanoparticle strategy to broaden which disease-causing proteins medicines can target, giving options for dementia and brain cancer.
A perspective outlines an approach designed to remove harmful proteins that drive disease. By broadening the proteins that can be treated, the technology could help tackle conditions such as dementia and brain cancer.
The work was led by chair professor in nanomedicine Bingyang Shi at the University of Technology Sydney, in collaboration with professor Kam Leong of Columbia University and professor Meng Zheng of Henan University.
Professor Shi said: “Proteins are essential for nearly every function in the body, but when they become mutated, misfolded, overproduced or build up in the wrong place, they can disrupt normal cell processes and trigger disease.
He added: “Many conditions, including cancer, dementia, and autoimmune disorders, are driven by abnormal proteins, and some have shapes or behaviours that make them particularly resistant to drug treatments.”
To tackle these challenges, the researchers created a type of engineered nanoparticle called nanoparticle-mediated targeting chimeras (NPTACs).
The particles are designed to recognise specific disease-associated proteins and promote their breakdown in the body.
Professor Shi said: “We have developed an efficient and flexible method to guide disease-causing proteins, whether inside or outside the cell, into the body’s natural recycling system, where they can be broken down and removed.”
Interest in targeted protein degradation has surged in recent years.
Companies such as Arvinas have attracted more than US$1bn in investment and formed partnerships with pharmaceutical firms including Pfizer, Bayer and Roche.
However, existing protein degradation technologies face limitations.
Challenges such as poor tissue penetration, unintended interactions with other proteins and complex chemical design have slowed their use, particularly for brain disorders and solid tumours.
Professor Shi said: “Our nanoparticle-based strategy overcomes these bottlenecks.”
The researchers say the NPTAC platform can enable degradation of both proteins inside and outside cells, offers tissue and disease-specific targeting including across the blood-brain barrier (the protective barrier around the brain), and has plug-and-play modularity to adapt to diverse protein targets.
They say it is scalable and clinically translatable, leveraging FDA-approved nanomaterials and industry-proven synthesis strategies, and can combine with diagnostic or therapeutic capabilities.
Protected by multiple international patents, NPTACs have shown preclinical results against targets such as EGFR (a protein often driving tumour growth) and PD-L1 (a protein that helps cancer cells evade the immune system).
Professor Shi said: “This progress paves the way for applications in oncology, neurology, and immunology. It changes how we think about nanoparticles, not only as delivery tools but also as active therapeutic agents.
He added: “With the targeted protein degradation market expected to surpass $10 billion USD by 2030, NPTACs provide a powerful platform for the next generation of smart, precision therapies.
“We are now seeking strategic industry partners to accelerate clinical development, licence applications across therapeutic fields, and prepare for regulatory approval.”
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