Epigenetic Reprogramming Targets

Epigenetic reprogramming — resetting cells to a younger epigenetic state while maintaining cell identity — is the most promising frontier in longevity research. Yamanaka factor-based reprogramming (OSKM) demonstrates that age reversal is biologically possible, but full reprogramming erases cell identity, creating cancer risk. Partial reprogramming protocols must navigate a narrow window between rejuvenation and dedifferentiation, and the optimal combination of factors, dosing, timing, and cell-type-specific protocols remains unknown. The space of possible reprogramming interventions — transcription factors, small molecules, RNA-based approaches, and their combinations — is vast and largely unexplored.

Current reprogramming research relies on empirical screening of factor combinations and dosing schedules in cell culture, guided by biological intuition about chromatin dynamics and transcriptional regulation. Computational approaches predict epigenetic age through clock models but cannot generate the interventions needed to reverse it. The gap between measuring aging and generating rejuvenation strategies remains the central bottleneck in the field.