FOXO4-DRI

Overview

• [educational] A synthetic senolytic peptide — a D-retro-inverso modification of the FOXO4 sequence (reversed order, D- instead of L-amino acids) plus an added peptide segment. Designed to clear senescent (“zombie”) cells, a hallmark of aging. — Longevity Top-5

Mechanisms

• [educational] Senolysis: blocks natural FOXO4 from sequestering p53 in the nucleus of senescent cells → p53 exits → triggers apoptosis of the senescent cell (sparing healthy cells). — Longevity Top-5

Evidence

• [educational] Mouse: ↓testicular senescence (↑testosterone, ↑sperm quality), ↓pulmonary-fibrosis senescence, cardiac-aging (related blocker), and in aged-healthy mice → ↑fur density, renal function, fitness (healthspan). Human: only one in-vitro study (clearing senescent cartilage cells); no in-vivo human data → ranked #4 of the longevity top-5 on mechanism strength despite thin evidence. — Longevity Top-5

Anecdotes

Physician protocols

Practical notes

• [warning] Very limited evidence; not FDA-approved; senolytic mechanism is promising but unproven in humans. Dosing/cycles not covered in source. — Longevity Top-5