Design, Synthesis, and Evaluation of Monoamine Oxidase A Inhibitors–Indocyanine Dyes Conjugates as Targeted Antitumor Agents

Molecules

Rui-Heng Kong¹  Yan-Hua Mou¹  Dun Wang¹  Chun Guo²  Yan-Yu Li²  Xiao-Guang Yang²  Meng Ding²  Yong-Jun Wang³  Jian Wang⁴ 

[1] Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, China;;Key Laboratory of Structure-Based Drug Design &School of life sciences and biological pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China;Wuya College of innovation, Shenyang Pharmaceutical University, Shenyang 110016, China;

关键词: monoamine oxidase A;    prostate cancer;    heptamethine cyanine dyes;    isoniazid;    molecular docking;   

DOI  :  10.3390/molecules24071400

来源: DOAJ

【 摘 要 】

Monoamine oxidase A (MAOA) is an important mitochondria-bound enzyme that catalyzes the oxidative deamination of monoamine neurotransmitters. Accumulating evidence suggests a significant association of increased MAOA expression and advanced high-grade prostate cancer (PCa) progression and metastasis. Herein, a series of novel conjugates combining the MAOA inhibitor isoniazid (INH) and tumor-targeting near-infrared (NIR) heptamethine cyanine dyes were designed and synthesized. The synthesized compounds G1–G13 were evaluated in vitro for their cytotoxicity against PC-3 cells using the MTT assay, and molecular docking studies were performed. Results showed that most tested compounds exhibited improved antitumor efficacy compared with INH. Moreover, conjugates G10 and G11 showed potent anticancer activity with IC₅₀ values (0.85 and 0.4 μM respectively) comparable to that of doxorubicin (DOX). This may be attributable to the preferential accumulation of these conjugates in tumor cells. G10, G11, and G12 also demonstrated moderate MAOA inhibitory activities. This result and the results of molecular docking studies were consistent with their cytotoxicity activities. Taken together, these data suggest that a combination of the MAOA inhibitor INH with tumor-targeting heptamethine cyanine dyes may prove to be a highly promising tool for the treatment of advanced prostate cancer.

【 授权许可】

Unknown