PEP/NEWS — Peptide intel. Daily.

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New research details how five types of brain cells send and receive signals that spread cellular senescence — the zombie-cell state linked to brain aging. Understanding the relay network is a prerequisite for stopping it, including via peptide-based senolytics.

The Conboy lab describes a combination treatment that clears both senescent cells and tumor cells in preclinical work. The dual-target approach is directly relevant to researchers studying FOXO4-DRI and other peptide-based senolytic strategies.

GenBio — co-founded by Nobel laureate David Baker — has released a 'world model' AI that can simulate a cell's natural state and its response to interventions. For peptide researchers, this kind of virtual testing bed could compress years of screening into weeks.

Bryan Johnson's team finds that a 9°F rise in nighttime temperature costs about 23 minutes of sleep per night — roughly six days per year. For researchers pairing DSIP or other sleep-adjacent peptides with environmental interventions, temperature control may be the baseline variable worth fixing first.

A new Aging Cell paper identifies ANGPTL8 as a driver of fat-tissue senescence through the AKT2-mTOR pathway. The finding is relevant to metabolic peptide research — it pinpoints a molecular switch that may explain why fat depots age faster in some individuals.

XPRIZE has named its Healthspan finalist teams — research groups competing to demonstrate measurable reversal of aging markers in human subjects. The prize structure is designed to reward therapies that outperform lifestyle-only interventions, which raises the bar for every peptide protocol in the field.

Ep. 404 with psychiatrist Linus Abrams argues that symptom reduction is not the same as full recovery — and that hormonal and peptide-adjacent systems are underused in modern psychiatry. Relevant for researchers tracking kisspeptin and neuropeptide effects on mood and cognition.

Researchers built a transcriptomic clock called Pasta that predicts the age-related effects of compounds and gene knockouts from RNA data. A tool like this could eventually score peptide interventions without requiring long lifespan studies.