Open Access

ARTICLE

A549/DDP derived exosomes can affect cisplatin chemosensitivity via transporting CXCR4 to A549 cells

by MINGMING FANG^1,#, NING GE^2,#, JIANFANG LIU^3,*, YAYUN CUI^2,*

1 Department of Radiation Oncology, Changzhou Cancer Hospital Affiliated to Soochow University, Changzhou, 213032, China
2 Department of Cancer Radiotherapy, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China (Anhui Provincial Cancer Hospital), Hefei, 230031, China
3 Department of Neurology, The Affiliated Changzhou No. 2 People’s Hospital of Nanjing Medical University, Changzhou, 213001, China

* Corresponding Authors: JIANFANG LIU. Email: ; YAYUN CUI. Email:
# These authors contributed equally to this work

BIOCELL 2022, 46(3), 711-720. https://doi.org/10.32604/biocell.2022.016714

Received 19 March 2021; Accepted 31 May 2021; Issue published 18 November 2021

Abstract

The resistance of cancer cells to the anti-cancer drugs is the most important reason that affecting the efficacy of the non-small cell lung cancer (NSCLC) chemotherapy; thus, to explore the underlying mechanism of drug resistance of NSCLC medications is urgently needed for improving the therapeutic efficacy of current anti-NSCLC chemotherapies. The aim of the present study is to explore the roles of exosomes in the chemosensitivity of A549 cells and the related mechanism. A549 cells and cisplatin resistant cell line A549/DDP derived exosomes were isolated, and the expressions of CXCR4 were compared. Then, after cisplatin treatment, A549 cells were treated with exosomes, and the proliferation, apoptosis, migration, and invasion of the cells were examined. Finally, the tumorigenic effect of A549/DDP derived exosomes were also evaluated by cisplatin treated xenograft tumor mice models in vivo. We found that A549/DDP derived exosomes increased the proliferation, migration, and invasion, and inhibited the apoptosis and cisplatin sensitivity of A549 cells. CXCR4 was also significantly increased in cells treated with A549/DDP derived exosomes. Furthermore, A549/DDP derived exosomes may also decrease the chemosensitivity of NSCLC cells to cisplatin in vivo. Our data suggested that A549/DDP derived exosomes can affect the chemosensitivity of A549 cells to cisplatin, possibly by transporting CXCR4 to A549 cells. Our data may provide novel evidence for the investigation of drug resistance of NSCLC.

---

Keywords

---