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Pericyte-targeting prodrug overcomes tumor resistance to vascular disrupting agents.

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机构: [1]College of Pharmacy, Jinan University, Guangzhou, China [2]Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, Jinan University, Guangzhou, China [3]The FirstAffiliated Hospital of Jinan University, Guangzhou, China [4]School of Public Health and Tropical Medicine, Southern Medical University, Guangzhou, China [5]Analytical and Testing Center, Jinan University,Guangzhou, China [6]Cancer Center of Guangzhou Medical University, Guangzhou, China [7]Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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Blood vessels in the tumor periphery have high pericyte coverage and are resistant to vascular disrupting agents (VDAs). VDA treatment resistance leads to a viable peripheral tumor rim that contributes to treatment failure and disease recurrence. Here, we provide evidence to support a hypothesis that shifting the target of VDAs from tumor vessel endothelial cells to pericytes disrupts tumor peripheral vessels and the viable rim, circumventing VDA treatment resistance. Through chemical engineering, we developed Z-GP-DAVLBH (from the tubulin-binding VDA desacetylvinblastine monohydrazide [DAVLBH]) as a prodrug that can be selectively activated by fibroblast activation protein α (FAPα) in tumor pericytes. Z-GP-DAVLBH selectively destroys the cytoskeleton of FAPα-expressing tumor pericytes, disrupting blood vessels both within the core and around the periphery of tumors. As a result, Z-GP-DAVLBH treatment eradicated the otherwise VDA-resistant tumor rim and led to complete regression of tumors in multiple lines of xenografts without producing the drug-related toxicity that is associated with similar doses of DAVLBH. This study demonstrates that targeting tumor pericytes with an FAPα-activated VDA prodrug represents a potential vascular disruption strategy in overcoming tumor resistance to VDA treatments.

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出版当年[2016]版:
大类 | 1 区 医学
小类 | 1 区 医学:研究与实验
最新[2025]版:
大类 | 1 区 医学
小类 | 1 区 医学:研究与实验
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第一作者机构: [1]College of Pharmacy, Jinan University, Guangzhou, China [2]Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, Jinan University, Guangzhou, China
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通讯机构: [1]College of Pharmacy, Jinan University, Guangzhou, China [2]Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, Jinan University, Guangzhou, China [*1]Dongmei Zhang, or Heru Chen, College of Pharmacy, Jinan University, 601 West Huangpu Road, Guangzhou 510632, China
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