AUTHOR=Duan Lian , Zheng Fan , Merlin Didier , Wang Hangxiang , Xiao Zeyu , Xiao Bo TITLE=Editorial: Oral Nanotherapeutics for Colon Diseases JOURNAL=Frontiers in Bioengineering and Biotechnology VOLUME=9 YEAR=2021 URL=https://www.frontiersin.org/journals/bioengineering-and-biotechnology/articles/10.3389/fbioe.2021.816304 DOI=10.3389/fbioe.2021.816304 ISSN=2296-4185