“…Furthermore, MSNs can overcome MDR by co-delivering antitumor agents, thus providing a new approach to cancer therapy ( Xue et al, 2017 ; Wu et al, 2018 ). Up to now, several reviews have summarized and analyzed the nano drug-delivery systems (nDDS) developed based on MSNs, fully demonstrating the potentials of this material in oncology diagnosis and treatment ( Tao et al, 2020 ; Gao et al, 2020 ; Mohamed Isa et al, 2021 ). However, most of these reviews summarized MSNs as multi-functional drug carriers ( Paris and Vallet-Regí, 2020 ; Mohamed Isa et al, 2021 ) or stimuli-responsive delivery platforms ( Li et al, 2019a ; Barui and Cauda, 2020 ; Živojević et al, 2021 ) for the treatment of tumors and other diseases such as osteosarcoma ( Quadros et al, 2021 ), breast cancer ( Poonia et al, 2018 ), glioblastoma ( Nam et al, 2018 ), prostate cancer ( Farina et al, 2018 ), atherosclerosis ( Sha et al, 2021 ) and rheumatoid arthritis ( Madav et al, 2020 ).…”