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Talabostat (PT100, Val-boroPro) is a potent, nonselective and orally available dipeptidyl peptidase IV (DPP-IV) inhibitor with a Ki of 0.18 nM.
Pack Size | Price | Availability | Quantity |
---|---|---|---|
5 mg | $107 | Inquiry | |
10 mg | $159 | Inquiry | |
50 mg | $606 | Inquiry |
Description | Talabostat (PT100, Val-boroPro) is a potent, nonselective and orally available dipeptidyl peptidase IV (DPP-IV) inhibitor with a Ki of 0.18 nM. |
Targets&IC50 | FAP:560 nM (IC50), DPP8/9:1.5/0.76 nM (Ki), DPP8/9:4/11 nM (IC50), DPP4:< 4 nM (IC50), DPP4:0.18 nM (Ki), QPP:310 nM (IC50) |
In vitro | Talabostat is a nonselective DPP-IV inhibitor, inhibiting DPP8/9, FAP, DPP2 and some other DASH family enzymes essentially as potently as it inhibits DPP-IV[1]. Talabostat stimulates the immune system by triggering a proinflammatory form of cell death in monocytes and macrophages known as pyroptosis. The inhibition of two serine proteases, DPP8 and DPP9, activates the proprotein form of caspase-1 independent of the inflammasome adaptor ASC[2]. Talabostat competitively inhibits the dipeptidyl peptidase (DPP) activity of FAP and CD26/DPP-IV, and there is a high-affinity interaction with the catalytic site due to the formation of a complex between Ser630/624 and the boron of talabostat[3]. |
In vivo | Talabostat can stimulate immune responses against tumors involving both the innate and adaptive branches of the immune system. In WEHI 164 fibrosarcoma and EL4 and A20/2J lymphoma models, PT-100 causes regression and rejection of tumors. The antitumor effect appears to involve tumor-specific CTL and protective immunological memory. Talabostat treatment of WEHI 164-inoculated mice increases mRNA expression of cytokines and chemokines known to promote T-cell priming and chemoattraction of T cells and innate effector cells[3]. Talabostat treated mice show significant less fibrosis and FAP expression is reduced. Upon PT100 treatment, significant differences in the MMP-12, MIP-1α, and MCP-3 mRNA expression levels in the lungs are also observed. Treatment with PT100 in this murine model of pulmonary fibrosis has an anti-fibro-proliferative effect and increases macrophage activation[4]. |
Molecular Weight | 214.07 |
Formula | C9H19BN2O3 |
Cas No. | 149682-77-9 |
Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. | |||||||||||||||||||||||||||||||||||
Solubility Information | DMSO: ≥ 40 mg/mL (186.85 mM), Sonication is recommended. | |||||||||||||||||||||||||||||||||||
Solution Preparation Table | ||||||||||||||||||||||||||||||||||||
DMSO
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