Thymosin Alpha-1

The overview

What is Thymosin Alpha-1?

Thymosin alpha-1 is a 28-residue N-acetylated peptide, originally isolated from thymic tissue, studied as a modulator of innate- and adaptive-immune signaling. In cell-based models it engages Toll-like receptors TLR2 and TLR9 on dendritic cells and macrophages, triggering downstream IRF3/NF-κB and p38-MAPK signaling that drives dendritic-cell maturation, polarization of T-cell differentiation toward Th1 phenotypes, natural-killer-cell activation, and indoleamine-2,3-dioxygenase-mediated tolerogenic pathways. It induces differentiation of T-cell precursors and stimulates interleukin-2 production and high-affinity IL-2-receptor expression in lymphocyte cultures. The linear sequence carries no cysteines or disulfide bonds. All findings here are in-vitro and ex-vivo immunological observations; no therapeutic or human-outcome claim is made.

In the research

Where Thymosin Alpha-1 shows up

The areas researchers focus on with Thymosin Alpha-1 - and why it has the science community paying attention.

• TLR2/TLR9 dendritic-cell signaling assays
• T-cell differentiation and IL-2 / IL-2R expression models
• Innate-immune (NK-cell, macrophage) activation studies

By the numbers

The facts that matter

To the molecule

Molecular specifications

Sourced, not claimed

The science behind it

The peer-reviewed studies behind Thymosin Alpha-1, linked so you can read them yourself.

1. Romani, L., et al. (2004). Thymosin alpha 1 activates dendritic cells for antifungal Th1 resistance through Toll-like receptor signaling. Blood.

   “Thymosin alpha 1 activated dendritic cells through the Toll-like receptor (TLR) 9/MyD88-dependent pathway, promoting Th1 priming.”

   DOI ↗PubMed ↗

Straight answers

Questions, answered