Tubulysin B 是一种高度细胞毒性的肽，有效的微管去稳定剂，是从粘细菌 Archangium geophyra 和 Angiococcus disciformis 中分离的。Tubulysin B 抑制许多癌细胞系，包括具有多药抗性的细胞系，IC50 值在皮纳摩尔范围内。Tubulysin B 是一种具有细胞毒性活性微管溶素，抑制微管蛋白聚合并导致细胞周期停滞和凋亡。
CAS：205304-87-6
分子式：C42H63N5O10S
分子量：830.04
纯度：98%
存储：Store at -20°C

Background:

Tubulysin B is a highly cytotoxic peptide and potent microtubule destabilizing agents isolated from the myxobacteria Archangium geophyra and Angiococcus disciformis. Tubulysin B has IC50 values in the picomolar range against many cancer cell lines, including those with multidrug resistant properties[1].Tubulysin B is a cytotoxic activity tubulysin which inhibits tubulin polymerization and leads to cell cycle arrest and apoptosis[2].

Tubulysin B has IC50s of 0.6 and 0.9 nM against KB and A549 tumors cell lines, respectively.

[1]. Leamon CP, et al. Prostate-Specific Membrane Antigen-Specific Antitumor Activity of a Self-Immolative Tubulysin Conjugate. Bioconjug Chem. 2019 Jun 19;30(6):1805-1813. [2]. Vlahov IR, et al. Acid mediated formation of an N-acyliminium ion from tubulysins: a new methodology for the synthesis of natural tubulysins and their analogs. Bioorg Med Chem Lett. 2011 Nov 15;21(22):6778-81.