Thymosin Alpha-1 — Ireland Research Reference (2026)

By the Peptides Lab Ireland research team · Updated July 2026 · Research use only

Thymosin Alpha-1 (Tα1) is a 28 amino acid thymic peptide with one of the deepest immunomodulation research literatures of any peptide. It is central to research into T-cell maturation, innate immunity, infection biology and immune-cancer interfaces. This reference is for Irish research groups working with Thymosin Alpha-1 in preclinical protocols.

What is Thymosin Alpha-1?

Thymosin Alpha-1 is a 28 amino acid peptide originally isolated from bovine thymus tissue (fraction 5). It is a naturally occurring thymic peptide with roles in T-cell development and immune modulation.

• Amino acids: 28
• Origin: Thymus-derived, cleaved from prothymosin-α
• Molecular weight: ≈ 3108 Da
• Class: Thymic peptide / immunomodulator

Research applications

Thymosin Alpha-1 research literature covers:

• T-cell biology research , with maturation, differentiation and thymopoiesis models
• Innate immunity research TLR signalling, NK cell activation
• Infection biology research , antiviral, antifungal and mycobacterial models
• Cancer immunology research . Tumour immune surveillance models
• Autoimmunity research — regulatory T-cell biology
• Sepsis research models . Immune balance in preclinical sepsis protocols

Related thymic and immune peptides

Thymosin Alpha-1 sits alongside:

• Thymalin — thymic extract research reference
• LL-37 , cathelicidin antimicrobial peptide (see our LL-37 primer)
• KPV . Anti-inflammatory α-MSH tripeptide

Reconstitution

Thymosin Alpha-1 reconstitutes with bacteriostatic water — see our reconstitution guide.

Regulatory context

Thymosin Alpha-1 isn’t approved as a medicinal product in Ireland. Supplied strictly for in-vitro laboratory research and educational use. See our HPRA regulations guide.

Sourcing Thymosin Alpha-1 in Ireland

Peptides Lab Ireland stocks HPLC-verified Thymosin Alpha-1 with per-batch Certificate of Analysis. See the product page.

Continue on the topic

• LL-37 Antimicrobial Peptide Research Reference
• Immune Modulation peptides category
• Reconstitution guide

For laboratory research use only. Not intended for human or veterinary use.