AUTHOR=Cui Qingbin , Wang Cong , Zeng Leli , Zhou Qian-Xiong , Fan Ying-Fang TITLE=Editorial: Novel Small-Molecule Agents in Overcoming Multidrug Resistance in Cancers JOURNAL=Frontiers in Chemistry VOLUME=10 YEAR=2022 URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.921985 DOI=10.3389/fchem.2022.921985 ISSN=2296-2646