For Research Purposes Only — 99%+ Purity Guaranteed — USA Sourced
Thymosin Alpha-1 is a naturally occurring thymic peptide originally isolated from thymus tissue. In preclinical research, it is studied as a central regulator of innate and adaptive immune signaling, particularly in the context of:
T-cell maturation and activation
Dendritic cell function
Pattern-recognition receptor (PRR) signaling
Immune system coordination and balance
Unlike antimicrobial or metabolic peptides, Tα1 is best understood as an immune system “orchestrator” peptide.
In stock
This product is intended for laboratory research purposes only. Not for human consumption, veterinary, or medical use.
Thymosin Alpha-1 is a naturally occurring thymic peptide originally isolated from thymus tissue. In preclinical research, it is studied as a central regulator of innate and adaptive immune signaling, particularly in the context of:
T-cell maturation and activation
Dendritic cell function
Pattern-recognition receptor (PRR) signaling
Immune system coordination and balance
Unlike antimicrobial or metabolic peptides, Tα1 is best understood as an immune system “orchestrator” peptide.
Source: PubChem
Sequence: Ser-Asp-Ala-Ala-Val-Asp-Thr-Ser-Ser-Glu-Ile-Thr-Thr-Lys-Asp-Leu-Lys-Glu-Lys-Lys-Glu-Val-Val-Glu-Glu-Ala-Glu-Asn
Molecular Formula: C₁₂₉H₂₁₅N₃₇O₅₅
Molecular Weight: 3108.315 g/mol
PubChem CID: 16130571
CAS Number: 62304-98-7
Synonyms: Thymalfasin, Thymosin α1, Tα1, Zadaxin, Thymosin-α(1-28), Thymic peptide α1
Primary application
Used to study:
T-cell differentiation and activation
CD4⁺ / CD8⁺ balance
Th1-biased immune signaling
Applied in models examining:
Toll-like receptor (TLR) activation
Dendritic cell maturation
Antigen presentation pathways
Used to investigate:
IFN-γ, IL-2, IL-12 signaling
Immune coordination rather than suppression
Balanced pro- and anti-inflammatory responses
Applied in preclinical models exploring:
Host immune response to viral challenge
Immune recovery and signaling integrity
Interferon-associated pathways
Studied for:
Age-related thymic decline
Reduced T-cell output
Restoration of immune signaling efficiency in aging models
Tα1 interacts indirectly with immune cells via:
Toll-like receptors (TLR-2, TLR-9)
Antigen-presenting cells (APCs)
Following engagement:
↑ Dendritic cell maturation
↑ Antigen presentation efficiency
↑ IFN-α / IFN-γ signaling
Downstream effects include:
Enhanced Th1 immune polarization
Improved CD8⁺ cytotoxic T-cell activation
Support of regulatory T-cell balance
Tα1 influences:
NF-κB signaling
STAT-dependent transcription
Interferon-regulated gene expression
These effects contribute to immune readiness without overactivation.
Tα1 → APC / TLR engagement → dendritic cell maturation → Th1 cytokine signaling → enhanced adaptive immune coordination
| Attribute | Significance |
|---|---|
| Immune-orchestrating peptide | Coordinates innate & adaptive systems |
| Non-cytotoxic | No direct immune cell destruction |
| Thymic origin | Mimics natural immune development signals |
| Th1-biased signaling | Supports antiviral & cellular immunity |
| Extensive literature | One of the most studied immune peptides |
Thymosin Alpha-1 is extensively studied as a non-cytotoxic immune signaling peptide that:
Enhances adaptive immune readiness
Improves innate immune sensing
Promotes functional immune coordination
Does not directly stimulate immune cell proliferation
Key findings from preclinical literature:
Increased dendritic cell antigen presentation
Improved T-cell responsiveness
Enhanced interferon signaling
Preservation of immune signaling under stress or aging
Importantly, Tα1 does not behave like a stimulant—it modulates signaling quality rather than magnitude.
