Matthew O'Connor

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Thymus and tumor
A new study found that shrinking reserves of naive T cells weaken tumor recognition in male mice by middle age more than in females. Restoring thymic activity improved protection [1]. Do men lose anti-cancer defenses with age? CD8+ T cells are immune cells that can kill infected or cancerous cells. However, an individual T cell...
Rejuvenation Roundup October 2026
As the weather cools down, the race for functional interventions heats up, and members of our field have been looking for ways to push through bottlenecks both regulatory and scientific. Here's what we've reported last month. Interviews Laura Minquini on the Quest for Female Longevity: Laura Minquini is not a scientist, but that hasn’t stopped...
College for T Cells
In a new study, late-life treatment with a three-element senolytic vaccine led to lower senescence markers and a 12% increase in median lifespan in female B6 mice. However, short-lived controls complicate the picture [1]. Helping the immune system kill “zombie cells” Cellular SenescenceAs your body ages, more of your cells become senescent. Senescent cells do...
Astrocytes
In Aging Cell, researchers have described how increasing fibroblast growth factor 13 (FGF13) in astrocytes reduces aging throughout the bodies of mice. A factor from a well-known family FGFs are signaling molecules that share structural and functional commonalities and play crucial roles in biology, including neural function [1]. Some of these molecules are secreted, and...
RNA DNA Interaction
A recent study identified SRSF1, an RNA-processing and splicing factor, as a molecule with geroprotective potential. Inducing SRSF1 expression rejuvenated human cells in vitro, extended lifespan, and significantly reduced frailty in mice [1]. Alternative approaches Differentiated cells have the capacity to rejuvenate if an appropriate molecular environment is provided. The best-known factors that enable cellular...
One of the oldest and biggest longevity conferences moved this year across the Atlantic, from Copenhagen to Boston. The new location brought ARDD close to several important longevity hubs and might have contributed to this edition’s practical, entrepreneurial, and forward-oriented spirit. We have already reported on the unprecedented panel where FDA named longevity a priority....