|
1
|
Ouyang L, Sun MM, Zhou PS, Ren YW, Liu XY, Wei WY, Song ZS, Lu K, Yang LX. LncRNA FOXD1-AS1 regulates pancreatic cancer stem cell properties and 5-FU resistance by regulating the miR-570-3p/SPP1 axis as a ceRNA. Cancer Cell Int 2024; 24:4. [PMID: 38167126 PMCID: PMC10763109 DOI: 10.1186/s12935-023-03181-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 12/16/2023] [Indexed: 01/05/2024] Open
Abstract
Cancer stem cells (CSCs) play a pivotal role in the pathogenesis of human cancers. Previous studies have highlighted the role of long non-coding RNA (lncRNA) in modulating the stemness of CSCs. In our investigation, we identified an upregulation of lncRNA FOXD1-AS1 in CSCs. The enforced expression of lncRNA FOXD1-AS1 promotes tumorigenesis and self-renewal in pancreatic cancer CSCs. Conversely, the knockdown of lncRNA FOXD1-AS1 inhibits tumorigenesis and self-renewal in pancreatic cancer CSCs. Furthermore, our findings reveal that lncRNA FOXD1-AS1 enhances self-renewal and tumorigenesis in pancreatic cancer CSCs by up-regulating osteopontin/secreted phosphoprotein 1(SPP1) and acting as a ceRNA to sponge miR-570-3p in pancreatic cancer (PC) CSCs. Additionally, lncRNA FOXD1-AS1 depleted pancreatic cancer cells exhibit heightened sensitivity to 5-FU-indued cell growth inhibition and apoptosis. Analysis of patient-derived xenografts (PDX) indicates that a low level of lncRNA FOXD1-AS1 may serve as a predictor of 5-FU benefits in PC patients. Moreover, the introduction of SPP1 can reverse the sensitivity of lncRNA FOXD1-AS1-knockdown PC cells to 5-FU-induced cell apoptosis. Importantly, molecular studies have indicated that the elevated levels of lncRNAFOXD1-AS1 in PC are facilitated through METTL3 and YTHDF1-dependent m6A methylation. In summary, our results underscore the critical functions of lncRNA FOXD1-AS1 in the self-renewal and tumorigenesis of pancreatic cancer CSCs, positioning lncRNA FOXD1-AS1 as a promising therapeutic target for PC.
Collapse
Affiliation(s)
- Liu Ouyang
- Department of Hepatobiliary and Pancreatic (HBP) Surgery, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, China
- Department of Hepatobiliary and Pancreatic (HBP) Surgery, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Min-Min Sun
- Department of Hepatic Surgery I, The Third Affiliated Hospital of Naval Medical University, Shanghai, 200438, China
| | - Ping-Sheng Zhou
- Department of Ultrasonic Intervention, The Third Affiliated Hospital of Naval Medical University, Shanghai, 200438, China
| | - Yi-Wei Ren
- Department of Hepatobiliary and Pancreatic (HBP) Surgery, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, China
- Department of Hepatobiliary and Pancreatic (HBP) Surgery, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Xin-Yu Liu
- Department of Hepatobiliary and Pancreatic (HBP) Surgery, Changhai Hospital, Naval Medical University, Shanghai, 200433, China
| | - Wan-Ying Wei
- Department of Biliary Tract Surgery II, The Third Affiliated Hospital of Naval Medical University, Shanghai, 200438, China
| | - Zhen-Shun Song
- Department of Hepatobiliary and Pancreatic (HBP) Surgery, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, China.
| | - Kai Lu
- Department of Biliary Tract Surgery II, The Third Affiliated Hospital of Naval Medical University, Shanghai, 200438, China.
| | - Li-Xue Yang
- Department of Biliary Tract Surgery II, The Third Affiliated Hospital of Naval Medical University, Shanghai, 200438, China.
| |
Collapse
|