TB-500 (Thymosin Beta 4) (5mg / 10mg)

TB-500 (Thymosin Beta 4) is a synthetic peptide widely utilized in laboratory and preclinical research settings. TB-500 is the synthetic analog of Thymosin Beta 4 (Tβ4), a naturally occurring intracellular protein encoded by the TMSB4X gene and found in high concentrations within thymic tissue, blood platelets, and wound fluid.

At Core Peptide USA, TB-500 (5mg and 10mg) is supplied strictly for research and laboratory purposes only, ensuring high purity, accurate labeling, and reliable sourcing for U.S.-based researchers.
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What Is TB-500 Peptide?

TB-500 peptide is a 43–amino-acid synthetic version of naturally occurring Thymosin Beta 4. It is known for being highly soluble in water, lightweight, and structurally stable—attributes that make TB-500 especially suitable for controlled laboratory research.

Researchers have proposed that TB-500 may exhibit biological activities similar to endogenous Thymosin Beta 4, including:

• Possible modulation of cell migration

• Potential involvement in angiogenesis

• Possible effects on wound healing pathways

• Hypothesized influence on inflammatory signaling

• Observed activity in tissue repair and regeneration models

Due to these properties, TB-500 peptide continues to attract interest across cellular biology, regenerative research, and molecular signaling studies.

Overview of TB-500 Mechanism of Action

A key functional region of TB-500 includes the peptide sequence (17)LKKTETQ(23), which researchers believe plays a central role in actin binding.

Actin Interaction and Cell Migration

Actin proteins form the structural backbone of the cytoskeleton, allowing cells to maintain shape, migrate, and divide. TB-500 is believed to interact with globular actin (G-actin), preventing its polymerization into filamentous actin (F-actin) through a process known as actin sequestration.

This interaction may:

• Increase the availability of G-actin

• Influence cytoskeletal flexibility

• Modify cellular motility and morphology

Such effects are relevant to research fields examining tissue regeneration, cell migration, and angiogenesis.

Chemical Makeup of TB-500

• Molecular Formula: C₂₁₂H₃₅₀N₅₆O₇₈S

• Molecular Weight: ~4963 g/mol

• Amino Acid Length: 43 residues

• Alternate Name: Thymosin Beta 4

TB-500 supplied by Core Peptide is available in 5mg and 10mg research vials to support varied experimental protocols.

TB-500 Peptide Research Highlights

TB-500 and Inflammation Pathways

Research suggests TB-500 may influence inflammatory responses through regulation of microRNA-146a (miR-146a). This microRNA is known to interact with inflammatory mediators such as IRAK1 and TRAF6, which are involved in cytokine signaling.

Experimental findings indicate that TB-500 may suppress these signaling pathways, potentially contributing to observed anti-inflammatory effects in controlled research models.
National Library of Medicine (PubMed) – https://pubmed.ncbi.nlm.nih.gov

TB-500 and Acute Wound Models

Animal studies conducted on murine wound models demonstrated that synthetic Thymosin Beta 4 (TB-500) was associated with:

• Increased re-epithelialization rates

• Enhanced wound contraction

• Elevated collagen deposition

• Possible stimulation of angiogenesis

These findings have led researchers to describe TB-500 as a multi-functional wound healing factor in preclinical studies.

TB-500 and Chronic Wound Research

Additional studies examined TB-500’s effects in diabetic, aged, and steroid-treated animal models. Results suggested that TB-500 accelerated wound healing regardless of pre-existing conditions. Phase II trials involving pressure ulcers and stasis wounds indicated that TB-500 may reduce healing time by up to one month.

TB-500 and Cardiac Research

In cardiovascular research, TB-500 has been studied for its potential influence on:

• Cardiomyocyte survival

• Angiogenesis in hypoxic conditions

• Reduction of right ventricular hypertrophy

• Activation of integrin-linked kinase (ILK) and Akt pathways

These findings suggest possible relevance of TB-500 in cardiac tissue regeneration models, although further research is ongoing.

TB-500 and Hair Follicle Studies

Mouse studies evaluating TB-500 showed increased hair follicle density and hair shaft formation. Molecular analysis revealed upregulation of mRNA and protein expression associated with follicular growth, positioning TB-500 as a molecule of interest in hair biology research.

TB-500 and Angiogenesis

Research involving human umbilical vein endothelial cells (HUVEC) and murine ischemia models suggests TB-500 may regulate angiogenesis through the Notch and NF-κB pathways. Elevated expression of VEGFA, Ang2, Tie2, and CD31 has been observed in experimental settings.

TB-500 and Corneal Tissue Research

Corneal injury models indicate TB-500 may:

• Modulate cytokine expression

• Reduce neutrophil infiltration

• Exhibit anti-apoptotic activity

• Activate survival pathways involving Akt and ILK

These effects may contribute to accelerated corneal healing in preclinical research environments.

TB-500 (5mg / 10mg) from Core Peptide USA

When sourcing TB-500 peptide in the United States, Core Peptide provides:

• High-purity research peptides

• Accurate dosing (5mg and 10mg)

• Secure U.S.-based shipping

• Clear labeling for laboratory use

• Strict research-only compliance