AUTHOR=Wang Xing , Meng Fenghua , Lei Zhiyong , Fan Daoyang , Lou Bo TITLE=Editorial: Bone targeting nanoparticle drug delivery system in bone metabolism and bone-related tumor diseases JOURNAL=Frontiers in Pharmacology VOLUME=13 YEAR=2022 URL=https://www.frontiersin.org/journals/pharmacology/articles/10.3389/fphar.2022.1016631 DOI=10.3389/fphar.2022.1016631 ISSN=1663-9812