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Pan YR, Lai JCY, Huang WK, Peng PH, Jung SM, Lin SH, Chen CP, Wu CE, Hung TH, Yu AL, Wu KJ, Yeh CN. PLK1 and its substrate MISP facilitate intrahepatic cholangiocarcinoma progression by promoting lymphatic invasion and impairing E-cadherin adherens junctions. Cancer Gene Ther 2024; 31:322-333. [PMID: 38057358 PMCID: PMC10874889 DOI: 10.1038/s41417-023-00705-z] [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: 05/04/2023] [Revised: 10/25/2023] [Accepted: 11/16/2023] [Indexed: 12/08/2023]
Abstract
Intrahepatic cholangiocarcinoma (iCCA) is a subtype of CCA and has a high mortality rate and a relatively poor prognosis. However, studies focusing on increased cell motility and loss of epithelial integrity during iCCA progression remain relatively scarce. We collected seven fresh tumor samples from four patients to perform RNA sequencing (RNA-seq) and assay for transposase-accessible chromatin using sequencing (ATAC-seq) to determine the transcriptome profile and chromatin accessibility of iCCA. The increased expression of cell cycle regulators, including PLK1 and its substrate MISP, was identified. Ninety-one iCCA patients were used to validate the clinical significance of PLK1 and MISP. The upregulation of PLK1 and MISP was determined in iCCA tissues. Increased expression of PLK1 and MISP was significantly correlated with tumor number, N stage, and lymphatic invasion in an iCCA cohort. Knockdown of PLK1 or MISP reduced trans-lymphatic endothelial migration and wound healing and affected focal adhesions in vitro. In cell‒cell junctions, MISP localized to adherens junctions and suppressed E-cadherin dimerization. PLK1 disrupted adherens junctions in a myosin-dependent manner. Furthermore, PLK1 and MISP promoted cell proliferation in vitro and tumorigenesis in vivo. In iCCA, PLK1 and MISP promote aggressiveness by increasing lymphatic invasion, tumor growth, and motility through the repression of E-cadherin adherens junctions.
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Affiliation(s)
- Yi-Ru Pan
- Department of Surgery, Chang Gung Memorial Hospital at Linkou, Chang Gung University, Taoyuan, 333, Taiwan
| | - Joseph Chieh-Yu Lai
- Cancer Genome Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, 333, Taiwan
- Institute of Biomedical Sciences, China Medical University, Taichung, 404, Taiwan
| | - Wen-Kuan Huang
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital at Linkou, Chang Gung University College of Medicine, Taoyuan, 333, Taiwan
| | - Pei-Hua Peng
- Cancer Genome Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, 333, Taiwan
| | - Shih-Ming Jung
- Department of Pathology, Chang Gung Memorial Hospital at Linkou, Taoyuan, 333, Taiwan
| | - Sheng-Hsuan Lin
- Department of Surgery, Chang Gung Memorial Hospital at Linkou, Chang Gung University, Taoyuan, 333, Taiwan
| | - Chiao-Ping Chen
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital at Linkou, Chang Gung University College of Medicine, Taoyuan, 333, Taiwan
| | - Chiao-En Wu
- Division of Hematology-Oncology, Department of Internal Medicine, Chang Gung Memorial Hospital at Linkou, Chang Gung University College of Medicine, Taoyuan, 333, Taiwan
| | - Tsai-Hsien Hung
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Chang Gung University, Taoyuan, 333, Taiwan
| | - Alice L Yu
- Institute of Stem Cell and Translational Cancer Research, Chang Gung Memorial Hospital at Linkou, Chang Gung University, Taoyuan, 333, Taiwan
- Department of Pediatrics, University of California in San Diego, San Diego, CA, 92103, USA
| | - Kou-Juey Wu
- Cancer Genome Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, 333, Taiwan.
| | - Chun-Nan Yeh
- Department of Surgery, Chang Gung Memorial Hospital at Linkou, Chang Gung University, Taoyuan, 333, Taiwan.
- Cancer Genome Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, 333, Taiwan.
- School of Medicine, National Tsing Hua University, Hsinchu, 30013, Taiwan.
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