1
|
Wei SL, Ye JJ, Sun L, Hu L, Wei YY, Zhang DW, Xu MM, Fei GH. Exosome-derived circKIF20B suppresses gefitinib resistance and cell proliferation in non-small cell lung cancer. Cancer Cell Int 2023; 23:129. [PMID: 37394466 DOI: 10.1186/s12935-023-02974-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 06/22/2023] [Indexed: 07/04/2023] Open
Abstract
BACKGROUND The gefitinib resistance mechanism in non-small cell lung cancer (NSCLC) remains unclear, albeit exosomal circular RNA (circRNA) is known to possibly play a vital role in it. METHODS We employed high-throughput sequencing techniques to detect the expressions of exosomal circRNA both in gefitinib-resistant and gefitinib-sensitive cells in this study. The circKIF20B expression was determined in serum exosomes and tissues of patients by qRT-PCR. The structure, stability, and intracellular localization of circKIF20B were verified by Sanger sequencing, Ribonuclease R (RNase R)/actinomycin D (ACTD) treatments, and Fluorescence in situ hybridization (FISH). The functions of circKIF20B were investigated by 5-Ethynyl-20-deoxyuridine (EdU), flow cytometry, Cell Counting Kit-8 (CCK-8), oxygen consumption rate (OCR), and xenograft model. Co-culture experiments were performed to explore the potential ability of exosomal circKIF20B in treating gefitinib resistance. The downstream targets of circKIF20B were determined by luciferase assay, RNA pulldown, and RNA immunoprecipitation (RIP). RESULTS We found that circKIF20B was poorly expressed in the serum exosomes of gefitinib-resistant patients (n = 24) and the tumor tissues of patients with NSCLC (n = 85). CircKIF20B was negatively correlated with tumor size and tumor stage. Decreasing circKIF20B was found to promote gefitinib resistance by accelerating the cell cycle, inhibiting apoptosis, and enhancing mitochondrial oxidative phosphorylation (OXPHOS), whereas increasing circKIF20B was found to restore gefitinib sensitivity. Mechanistically, circKIF20B is bound to miR-615-3p for regulating the MEF2A and then altering the cell cycle, apoptosis, and mitochondrial OXPHOS. Overexpressing circKIF20B parental cells can restore sensitivity to gefitinib in the recipient cells by upregulating the exosomal circKIF20B expression. CONCLUSIONS This study revealed a novel mechanism of circKIF20B/miR-615-3p/MEF2A signaling axis involving progression of gefitinib resistance in NSCLC. Exosomal circKIF20B is expected to be an easily accessible and alternative liquid biopsy candidate and potential therapeutic target in gefitinib-resistant NSCLC. The schematic diagram of mechanism in this study. Exosomal circKIF20B inhibits gefitinib resistance and cell proliferation by arresting the cell cycle, promoting apoptosis, and reducing OXPHOS via circKIF20B/miR-615-3p/MEF2A axis in NSCLC.
Collapse
Affiliation(s)
- Si-Liang Wei
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, 230022, Anhui, China
| | - Jing-Jing Ye
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, 230022, Anhui, China
| | - Li Sun
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, 230022, Anhui, China
| | - Lei Hu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, 230022, Anhui, China
| | - Yuan-Yuan Wei
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, 230022, Anhui, China
| | - Da-Wei Zhang
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, 230022, Anhui, China
| | - Meng-Meng Xu
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, 230022, Anhui, China
| | - Guang-He Fei
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China.
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, 230022, Anhui, China.
| |
Collapse
|
2
|
Zhang DW, Li F, Wei YY, Hu L, Chen SH, Yang MM, Zhang WT, Fei GH. Development and validation of a novel CD4 + T cell-related gene signature to detect severe COVID-19. Clin Transl Med 2023; 13:e1294. [PMID: 37278129 DOI: 10.1002/ctm2.1294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/18/2023] [Accepted: 05/27/2023] [Indexed: 06/07/2023] Open
Affiliation(s)
- Da-Wei Zhang
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, People's Republic of China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, Anhui Province, People's Republic of China
| | - Fang Li
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, People's Republic of China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, Anhui Province, People's Republic of China
| | - Yuan-Yuan Wei
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, People's Republic of China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, Anhui Province, People's Republic of China
| | - Lei Hu
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, People's Republic of China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, Anhui Province, People's Republic of China
| | - Su-Hong Chen
- Department of Integrated Traditional Chinese and Western Medicine, Anhui Medical University, Hefei, Anhui Province, People's Republic of China
| | - Ming-Ming Yang
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, People's Republic of China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, Anhui Province, People's Republic of China
| | - Wen-Ting Zhang
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, People's Republic of China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, Anhui Province, People's Republic of China
| | - Guang-He Fei
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Anhui Medical University, Hefei, Anhui Province, People's Republic of China
- Key Laboratory of Respiratory Diseases Research and Medical Transformation of Anhui Province, Hefei, Anhui Province, People's Republic of China
| |
Collapse
|