A brain-penetrant microtubule-targeting agent that disrupts hallmarks of glioma tumorigenesis.
A brain-penetrant microtubule-targeting agent that disrupts hallmarks of glioma tumorigenesis.
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DOI:
10.1093/noajnl/vdaa165
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发表时间:
2021-01
期刊:
影响因子:
--
通讯作者:
Stella N
中科院分区:
文献类型:
--
作者:
Horne EA;Diaz P;Cimino PJ;Jung E;Xu C;Hamel E;Wagenbach M;Kumasaka D;Wageling NB;Azorín DD;Winkler F;Wordeman LG;Holland EC;Stella N
Glioma is sensitive to microtubule-targeting agents (MTAs), but most MTAs do not cross the blood brain barrier (BBB). To address this limitation, we developed the new chemical entity, ST-401, a brain-penetrant MTA. Synthesis of ST-401. Measures of MT assembly and dynamics. Cell proliferation and viability of patient-derived (PD) glioma in culture. Measure of tumor microtube (TM) parameters using immunofluorescence analysis and machine learning-based workflow. Pharmacokinetics (PK) and experimental toxicity in mice. In vivo antitumor activity in the RCAS/tv-a PDGFB-driven glioma (PDGFB-glioma) mouse model. We discovered that ST-401 disrupts microtubule (MT) function through gentle and reverisible reduction in MT assembly that triggers mitotic delay and cell death in interphase. ST-401 inhibits the formation of TMs, MT-rich structures that connect glioma to a network that promotes resistance to DNA damage. PK analysis of ST-401 in mice shows brain penetration reaching antitumor concentrations, and in vivo testing of ST-401 in a xenograft flank tumor mouse model demonstrates significant antitumor activity and no over toxicity in mice. In the PDGFB-glioma mouse model, ST-401 enhances the therapeutic efficacies of temozolomide (TMZ) and radiation therapy (RT). Our study identifies hallmarks of glioma tumorigenesis that are sensitive to MTAs and reports ST-401 as a promising chemical scaffold to develop brain-penetrant MTAs.
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