Could unlocking the secrets to a long life be as simple as understanding how our bodies process fat? New research suggests a surprising connection between fat metabolism, interaction between organs, and longevity, offering potential pathways to combat age-related diseases.
What role does fat play in aging, and could manipulating this process extend healthy lifespan? This question has driven the work of Meng Wang, a senior group leader at the Howard Hughes Medical institute Janelia Research Campus, and her team.Wang’s own family history-with both grandmothers living to 95 and 100 years old-sparked her initial curiosity.
“Seeing them always made me wonder, why can’t everyone age like them?” Wang said.
Her research, beginning with postdoctoral work at Harvard Medical School and Massachusetts General Hospital, focused on the nematode worm Caenorhabditis elegans. Wang investigated how lipolysis-the breakdown of fats-impacts lifespan. over several years at Baylor College of Medicine, her team revealed that the enzyme LIPL-4 breaks down specific lipid molecules within lysosomes, the cell’s recycling centers.This process generates lipid messengers that travel to the nucleus,activating genes that boost metabolism and extend lifespan.
This revelation unveiled a previously unknown molecular pathway linking fat metabolism to longevity. Wang now focuses on how metabolic products, or metabolites, act as signaling molecules influencing gene expression, communication between organs, and interactions between the gut microbiome and the host to promote longevity.
The implications extend beyond simply living longer. Wang believes understanding the biology of aging could provide critical insights for preventing or treating age-related chronic diseases like diabetes, heart disease, neurodegeneration, and cancer-conditions expected to place increasing strain on healthcare systems as populations age.
“Aging is the single greatest risk factor for manny chronic diseases,” Wang said. “The idea is that if we could target aging itself, we might be able to combat multiple age-related diseases at onc.”
The Fat-Neuron Link
Building on the LIPL-4 discovery, Wang’s team
Source: ASBMB 2026 Annual Meeting.
