Upgrade of chrysomycin A as a novel topoisomerase II inhibitor to curb KRAS-mutant lung adenocarcinoma progression

Copyright © 2022 The Authors. Published by Elsevier Ltd.. All rights reserved..

A primary strategy employed in cancer therapy is the inhibition of topoisomerase II (Topo II), implicated in cell survival. However, side effects and adverse reactions restrict the utilization of Topo II inhibitors. Thus, investigations focus on the discovery of novel compounds that are capable of inhibiting the Topo II enzyme and feature safer toxicological profiles. Herein, we upgrade an old antibiotic chrysomycin A from Streptomyces sp. 891 as a compelling Topo II enzyme inhibitor. Our results show that chrysomycin A is a new chemical entity. Notably, chrysomycin A targets the DNA-unwinding enzyme Topo II with an efficient binding potency and a significant inhibition of intracellular enzyme levels. Intriguingly, chrysomycin A kills KRAS-mutant lung adenocarcinoma cells and is negligible cytotoxic to normal cells at the cellular level, thus indicating a capability of potential treatment. Furthermore, mechanism studies demonstrate that chrysomycin A inhibits the Topo II enzyme and stimulates the accumulation of reactive oxygen species, thereby inducing DNA damage-mediated cancer cell apoptosis. Importantly, chrysomycin A exhibits excellent control of cancer progression and excellent safety in tumor-bearing models. Our results provide a chemical scaffold for the synthesis of new types of Topo II inhibitors and reveal a novel target for chrysomycin A to meet its further application.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:187

Enthalten in:

Pharmacological research - 187(2023) vom: 01. Jan., Seite 106565

Sprache:

Englisch

Beteiligte Personen:

Zhang, Junmin [VerfasserIn]
Liu, Pei [VerfasserIn]
Chen, Jianwei [VerfasserIn]
Yao, Dahong [VerfasserIn]
Liu, Qing [VerfasserIn]
Zhang, Juanhong [VerfasserIn]
Zhang, Hua-Wei [VerfasserIn]
Leung, Elaine Lai-Han [VerfasserIn]
Yao, Xiao-Jun [VerfasserIn]
Liu, Liang [VerfasserIn]

Links:

Volltext

Themen:

82196-88-1
Antineoplastic Agents
Apoptosis
Chrysomycin A
DNA Topoisomerases, Type II
DNA damage
EC 3.6.5.2
EC 5.99.1.3
Journal Article
KRAS protein, human
Proto-Oncogene Proteins p21(ras)
Reactive oxygen species
Research Support, Non-U.S. Gov't
Topoisomerase II Inhibitors
Topoisomerase II activity

Anmerkungen:

Date Completed 15.02.2023

Date Revised 15.02.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.phrs.2022.106565

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM349272409