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Zhang XY, Zhu BC, He M, Dong SS. Proto-oncogene c-Myb potentiates cisplatin resistance of ovarian cancer cells by downregulating lncRNA NKILA and modulating cancer stemness and LIN28A-let7 axis. J Ovarian Res 2024; 17:102. [PMID: 38745302 PMCID: PMC11092198 DOI: 10.1186/s13048-024-01429-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 04/30/2024] [Indexed: 05/16/2024] Open
Abstract
Ovarian cancer is a major gynecological cancer that has poor prognosis associated mainly to its late diagnosis. Cisplatin is an FDA approved ovarian cancer therapy and even though the therapy is initially promising, the patients mostly progress to resistance against cisplatin. The underlying mechanisms are complex and not very clearly understood. Using two different paired cell lines representing cisplatin-sensitive and the cisplatin-resistant ovarian cancer cells, the ES2 and the A2780 parental and cisplatin-resistant cells, we show an elevated proto-oncogene c-Myb in resistant cells. We further show down-regulated lncRNA NKILA in resistant cells with its de-repression in resistant cells when c-Myb is silenced. NKILA negatively correlates with cancer cell and invasion but has no effect on cellular proliferation or cell cycle. C-Myb activates NF-κB signaling which is inhibited by NKILA. The cisplatin resistant cells are also marked by upregulated stem cell markers, particularly LIN28A and OCT4, and downregulated LIN28A-targeted let-7 family miRNAs. Whereas LIN28A and downregulated let-7s individually de-repress c-Myb-mediated cisplatin resistance, the ectopic expression of let-7s attenuates LIN28A effects, thus underlying a c-Myb-NKILA-LIN28A-let-7 axis in cisplatin resistance of ovarian cancer cells that needs to be further explored for therapeutic intervention.
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Affiliation(s)
- Xue-Yan Zhang
- School of Nursing, Jilin University, Changchun, 130021, Jilin, China
| | - Bo-Chi Zhu
- Department of Neurology, Second Hospital of Jilin University, Changchun, 130022, Jilin, China
| | - Miao He
- Department of Anesthesiology, Second Hospital of Jilin University, No. 218 Ziqiang Street, Changchun, 130022, Jilin, China
| | - Shan-Shan Dong
- Department of Anesthesiology, Second Hospital of Jilin University, No. 218 Ziqiang Street, Changchun, 130022, Jilin, China.
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Huang P, Wen F, Li Y, Li Q. The tale of SOX2: Focusing on lncRNA regulation in cancer progression and therapy. Life Sci 2024; 344:122576. [PMID: 38492918 DOI: 10.1016/j.lfs.2024.122576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Revised: 03/06/2024] [Accepted: 03/13/2024] [Indexed: 03/18/2024]
Abstract
Long non-coding RNAs (lncRNAs) have emerged as influential contributors to diverse cellular processes, which regulate gene function and expression via multiple mechanistic pathways. Therefore, it is essential to exploit the structures and interactions of lncRNAs to comprehend their mechanistic functions within cells. A growing body of evidence has revealed that deregulated lncRNAs are involved in multiple regulations of malignant events including cell proliferation, growth, invasion, and metabolism. SRY-related high mobility group box (SOX)2, a well-recognized member of the SOX family, is commonly overexpressed in various types of cancer, contributing to tumor progression and maintenance of stemness. Emerging studies have shown that lncRNAs interact with SOX2 to remarkably contribute to carcinogenesis and disease states. This review elaborates on the crosstalk between the intricate and complicated functions of lncRNAs and SOX2 in the context of malignant diseases. We elucidate distinct molecular mechanisms that contribute to the onset/advancement of cancer, indicating that lncRNAs/SOX2 axes hold immense promise for potential therapeutic targets. Furthermore, we delve into the modalities of emerging feasible treatment options for targeting lncRNAs, highlighting the limitations of such therapies and providing novel insights into further ameliorations of targeted strategies of lncRNAs to promote the clinical implications. Translating current discoveries into clinical applications could ultimately boost improved survival and prognosis of cancer patients.
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Affiliation(s)
- Peng Huang
- Division of Abdominal Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Department of Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Feng Wen
- Division of Abdominal Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Department of Radiation Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - YiShan Li
- Thoracic Oncology Ward, Cancer Center, West China Hospital, Sichuan University, West China School of Nursing, Chengdu, Sichuan 610041, China
| | - Qiu Li
- Division of Abdominal Tumor Multimodality Treatment, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Department of Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
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Feng H, Xu D, Jiang C, Chen Y, Wang J, Ren Z, Li X, Zhang XD, Cang S. LINC01559 promotes lung adenocarcinoma metastasis by disrupting the ubiquitination of vimentin. Biomark Res 2024; 12:19. [PMID: 38311781 PMCID: PMC10840222 DOI: 10.1186/s40364-024-00571-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 01/24/2024] [Indexed: 02/06/2024] Open
Abstract
BACKGROUND Distant metastasis is the major cause of lung adenocarcinoma (LUAD)-associated mortality. However, molecular mechanisms involved in LUAD metastasis remain to be fully understood. While the role of long non-coding RNAs (lncRNAs) in cancer development, progression, and treatment resistance is being increasingly appreciated, the list of dysregulated lncRNAs that contribute to LUAD pathogenesis is also rapidly expanding. METHODS Bioinformatics analysis was conducted to interrogate publicly available LUAD datasets. In situ hybridization and qRT-PCR assays were used to test lncRNA expression in human LUAD tissues and cell lines, respectively. Wound healing as well as transwell migration and invasion assays were employed to examine LUAD cell migration and invasion in vitro. LUAD metastasis was examined using mouse models in vivo. RNA pulldown and RNA immunoprecipitation were carried out to test RNA-protein associations. Cycloheximide-chase assays were performed to monitor protein turnover rates and Western blotting was employed to test protein expression. RESULTS The expression of the lncRNA LINC01559 was commonly upregulated in LUADs, in particular, in those with distant metastasis. High LINC01559 expression was associated with poor outcome of LUAD patients and was potentially an independent prognostic factor. Knockdown of LINC01559 diminished the potential of LUAD cell migration and invasion in vitro and reduced the formation of LUAD metastatic lesions in vivo. Mechanistically, LINC01559 binds to vimentin and prevents its ubiquitination and proteasomal degradation, leading to promotion of LUAD cell migration, invasion, and metastasis. CONCLUSION LINC01559 plays an important role in LUAD metastasis through stabilizing vimentin. The expression of LINC01559 is potentially an independent prognostic factor of LUAD patients, and LINC01559 targeting may represent a novel avenue for the treatment of late-stage LUAD.
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Affiliation(s)
- Hao Feng
- Department of Oncology, Henan Provincial International Coalition Laboratory of Oncology Precision Treatment, Henan Provincial Academician Workstation of Non-Coding RNA Translational Research, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China
| | - Dengfei Xu
- Department of Oncology, Henan Provincial International Coalition Laboratory of Oncology Precision Treatment, Henan Provincial Academician Workstation of Non-Coding RNA Translational Research, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China
| | - Chenyang Jiang
- Department of Oncology, Henan Provincial International Coalition Laboratory of Oncology Precision Treatment, Henan Provincial Academician Workstation of Non-Coding RNA Translational Research, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China
| | - Yuming Chen
- Department of Oncology, Henan Provincial International Coalition Laboratory of Oncology Precision Treatment, Henan Provincial Academician Workstation of Non-Coding RNA Translational Research, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China
| | - Junru Wang
- Department of Oncology, Henan Provincial International Coalition Laboratory of Oncology Precision Treatment, Henan Provincial Academician Workstation of Non-Coding RNA Translational Research, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China
| | - Zirui Ren
- Department of Oncology, Henan Provincial International Coalition Laboratory of Oncology Precision Treatment, Henan Provincial Academician Workstation of Non-Coding RNA Translational Research, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China
| | - Xiang Li
- Department of Oncology, Henan Provincial International Coalition Laboratory of Oncology Precision Treatment, Henan Provincial Academician Workstation of Non-Coding RNA Translational Research, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China
| | - Xu Dong Zhang
- School of Biomedical Sciences and Pharmacy, The University of Newcastle, Callaghan, NSW, 2308, Australia.
- Translational Research Institute, Henan Provincial and Zhengzhou City Key Laboratory of Non-Coding RNA and Cancer Metabolism, Henan International Join Laboratory of Non-Coding RNA and Metabolism in Cancer, Henan Provincial People's Hospital, Academy of Medical Sciences, Zhengzhou University, Henan, 450003, China.
| | - Shundong Cang
- Department of Oncology, Henan Provincial International Coalition Laboratory of Oncology Precision Treatment, Henan Provincial Academician Workstation of Non-Coding RNA Translational Research, Henan Provincial People's Hospital, Zhengzhou University People's Hospital, Zhengzhou, 450003, Henan, China.
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