生物活性
Talabostat mesylate (Val-boroPro mesylate; PT100 mesylate) is an orally active and nonselective dipeptidyl peptidase IV (DPP-IV) inhibitor (IC50 < 4 nM; Ki = 0.18 nM) and the first clinical inhibitor of fibroblast activation protein (FAP) (IC50 = 560 nM), inhibits DPP8/9 (IC50 = 4/11 nM; Ki = 1.5/0.76 nM), quiescent cell proline dipeptidase (QPP) (IC50 = 310 nM), DPP2, and some other DASH family enzymes. Antineoplastic and hematopoiesis- stimulating activities[1][2][3].
IC50 & Target
DPP-4
体外研究
By cleaving N-terminal Xaa-Pro or Xaa-Ala residues, Talabostat mesylate (Val-boroPro mesylate) inhibits dipeptidyl peptidases, such as FAP, resulting in the stimulation of cytokine and chemokine production and specific T-cell immunity and T-cell dependent activity[3].
? Talabostat mesylate (Val-boroPro mesylate) competitively inhibits the dipeptidyl peptidase (DPP) activity of FAP and CD26/DPP-IV, and there is a high-affinity interaction with the catalytic site[4].
体内研究
Talabostat mesylate (Val-boroPro mesylate) 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, Talabostat mesylate (Val-boroPro mesylate) causes regression and rejection of tumors. The antitumor effect appears to involve tumor-specific CTL and protective immunological memory.
Talabostat mesylate (Val-boroPro mesylate) 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[4].
分子量
310.18
性状
Solid
Formula
C10H23BN2O6S
CAS 号
150080-09-4
运输条件
Room temperature in continental US; may vary elsewhere.
溶解性数据
In Vitro:
H2O : 250 mg/mL (805.98 mM; Need ultrasonic)
DMSO : ≥ 40 mg/mL (128.96 mM)
* "≥" means soluble, but saturation unknown.
配制储备液
浓度溶剂体积质量 1 mg 5 mg 10 mg
1 mM 3.2239 mL 16.1197 mL 32.2393 mL
5 mM 0.6448 mL 3.2239 mL 6.4479 mL
10 mM 0.3224 mL 1.6120 mL 3.2239 mL
*
请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液;一旦配成溶液,请分装保存,避免反复冻融造成的产品失效。
储备液的保存方式和期限:-80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)。-80°C 储存时,请在 6 个月内使用,-20°C 储存时,请在 1 个月内使用。
In Vivo:
请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液,再依次添加助溶剂: