Researchers Propose 5-Part 'Senotype' Framework to Classify Senescent Cells
Updated
Updated · BIOENGINEER.ORG · Jul 30
Researchers Propose 5-Part 'Senotype' Framework to Classify Senescent Cells
2 articles · Updated · BIOENGINEER.ORG · Jul 30
Summary
A Nature Aging paper introduces “senotype” as a reference framework for classifying senescent cells by their inputs, molecular traits and functional effects rather than treating senescence as a single state.
The 5-part scheme organizes cells by identity and context, inducing mechanism, temporal stage, multimodal molecular and structural features, and physiological or pathological function.
The authors argue senotypes should be defined by combinations of core hallmarks—durable cell-cycle arrest, altered secretory profiles, macromolecular or organelle damage, and disrupted homeostasis—not by single markers.
Single-cell, spatial, proteomic and computational tools are positioned as key to mapping tissue-derived senotypes more rigorously, with the goal of improving consistency and speeding targeted senotherapeutic development.