SenoMune-0257 is a nine-amino-acid peptide from Immorta Bio, still preclinical. What the company reported on 12 October 2026, and what it has not.
Written by the Peptide Labs Research Team
SenoMune-0257 is a synthetic nine-amino-acid peptide announced by the US company Immorta Bio on 12 October 2026. The company says artificial intelligence helped identify it and that it is designed to prompt T cells to recognise and remove senescent cells. It is an investigational candidate with no human data.
The company says it has completed its planned preclinical laboratory studies. It reports that the peptide stimulated cytotoxic T cells that removed senescent cells while sparing healthy ones, "under the conditions tested". The announcement names no assays, cell types or sample sizes, and cites no peer-reviewed paper on SenoMune-0257 itself. Durable immune memory and lower off-target toxicity are stated design goals, not shown results.
Senolytics are compounds that selectively kill senescent cells (senolytics explained). Immorta says small-molecule versions face off-target toxicity and cannot generate durable immune memory, so this peptide aims to direct the body's own T cells instead. It builds on the company's earlier SenoVax cellular immunotherapy and is described as a simpler, potentially off-the-shelf product.
Immorta says it is preparing for clinical entry, with initial human evaluation expected before the end of 2026. It names no trial design, country or regulatory filing, and states that efficacy has not been established in humans. Until data are published, treat every efficacy statement as a company claim. For wider context, see AI peptide drug discovery.
SenoMune-0257 is not a Peptide Labs product. Peptide Labs supplies research peptides strictly for in-vitro laboratory use only. This summary of a company announcement is for information and is not medical advice.
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