TB-4 (Timoxina Beta-4)

TB-500 - Thymosin Beta-4 Fragment Research Peptide

TB-500 is the synthetic N-terminal fragment of Thymosin Beta-4 (TB-4), a 43-amino-acid protein that is one of the most abundant actin-binding peptides in the human body. The “TB-500” name refers specifically to the active fragment that carries most of TB-4’s actin-regulating and cell-migration activity, and it is the form used in the majority of published repair-peptide literature. It is most often studied on its own for actin sequestration and cell-motility work, or paired with BPC-157 in tissue-repair study designs.

Why TB-500’s Actin Binding Matters

The hallmark activity of TB-500 is actin sequestration. Actin is the cytoskeletal protein that cells use to move, divide, and respond to injury. By binding G-actin monomers, TB-500 regulates the pool available for polymerization into the filaments that drive cell migration. That makes it one of the only peptides in the repair toolkit whose core mechanism is directly cytoskeletal rather than receptor-based.

TB-500 vs BPC-157

These two are the most commonly paired repair peptides in the published literature, so the mechanistic distinction matters.

The two mechanisms are non-overlapping, which is why they are frequently combined. WWP stocks BPC-157 / TB-500 as a co-lyophilized blend as well as single vials of each.

Aplicaciones de investigación

El TB-500 se utiliza en estudios que examinan:

• Muscle, tendon, and ligament repair models
• Cardiovascular repair and post-infarct remodeling
• Skin-wound healing and re-epithelialization
• Endothelial-cell migration and angiogenesis
• Cytoskeletal dynamics and cell motility
• Combined repair-peptide designs paired with BPC-157

Especificaciones

Storage & Handling

Unopened vials are kept at 2-8°C under standard cold-chain conditions and remain stable for 12+ months. Reconstitution parameters, solvent compatibility, and post-reconstitution stability for TB-4 (Thymosin Beta-4) are documented in the published peer-reviewed literature and standard peptide-chemistry references.

Reference Literature

Published clinical and preclinical TB-4 (Thymosin Beta-4) literature is available through PubMed, Google Scholar, and other peer-reviewed databases. WWP does not provide protocol design, dosing guidance, or administration parameters. Those decisions rest with the researcher and any applicable institutional review board.

Common Questions About TB-500 Research

What does TB-500 do in research?

Its core mechanism is actin binding - it sequesters G-actin monomers and regulates the pool available for filament assembly. Downstream, that supports cell migration, angiogenesis, and wound-repair signaling. Published studies most often track repair endpoints in muscle, cardiovascular, and skin tissue models.

What is the difference between BPC-157 and TB-500?

They act through different pathways. BPC-157 is most often cited in angiogenesis, nitric-oxide, and gut-signaling literature. TB-500 is most often cited in actin-regulation, cell-migration, and muscle/cardiovascular literature. Researchers combine them because the mechanisms are non-overlapping.

How is TB-500 different from full-length Thymosin Beta-4?

TB-500 is the synthetic N-terminal fragment of Thymosin Beta-4 that retains the core actin-binding motif. The full-length TB-4 molecule includes additional residues that are not required for the sequestration activity, which is why the fragment is the standard research tool.

Is TB-500 FDA approved?

No. TB-500 (Thymosin Beta-4) is not FDA approved for any human use. It is listed on the WADA Prohibited List for competitive athletes. Every vial WWP ships is labeled and sold strictly for laboratory and research use only.

How is TB-500 stored?

Los viales sin abrir se conservan a una temperatura de entre 2 y 8 °C y se mantienen estables durante más de 12 meses. Una vez reconstituida con agua bacteriostática, la solución se conserva a una temperatura de entre 2 y 8 °C y debe utilizarse en un plazo de 28 a 30 días.

Garantía de pureza

Cada lote tiene una pureza ≥99 %. Envíanos un certificado de análisis (COA) de cualquier análisis independiente y te daremos un vale de compra, independientemente de lo que indique.