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Ala U, Fagoonee S. RNA-binding protein transcripts as potential biomarkers for detecting Primary Sclerosing Cholangitis and for predicting its progression to Cholangiocarcinoma. Front Mol Biosci 2024; 11:1388294. [PMID: 38903178 PMCID: PMC11187294 DOI: 10.3389/fmolb.2024.1388294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 05/13/2024] [Indexed: 06/22/2024] Open
Abstract
Primary Sclerosing Cholangitis (PSC) is a persistent inflammatory liver condition that affects the bile ducts and is commonly diagnosed in young individuals. Despite efforts to incorporate various clinical, biochemical and molecular parameters for diagnosing PSC, it remains challenging, and no biomarkers characteristic of the disease have been identified hitherto. PSC is linked with an uncertain prognosis, and there is a pressing need to explore multiomics databases to establish a new biomarker panel for the early detection of PSC's gradual progression into Cholangiocarcinoma (CCA) and for the development of effective therapeutic interventions. Apart from non-coding RNAs, other components of the Ribonucleoprotein (RNP) complex, such as RNA-Binding Proteins (RBPs), also hold great promise as biomarkers due to their versatile expression in pathological conditions. In the present review, an update on the RBP transcripts that show dysregulated expression in PSC and CCA is provided. Moreover, by utilizing a bioinformatic data mining approach, we give insight into those RBP transcripts that also exhibit differential expression in liver and gall bladder, as well as in body fluids, and are promising as biomarkers for diagnosing and predicting the prognosis of PSC. Expression data were bioinformatically extracted from public repositories usingTCGA Bile Duct Cancer dataset for CCA and specific NCBI GEO datasets for both PSC and CCA; more specifically, RBPs annotations were obtained from RBP World database. Interestingly, our comprehensive analysis shows an elevated expression of the non-canonical RBPs, FANCD2, as well as the microtubule dynamics regulator, ASPM, transcripts in the body fluids of patients with PSC and CCA compared with their respective controls, with the same trend in expression being observed in gall bladder and liver cancer tissues. Consequently, the manipulation of tissue expression of RBP transcripts might be considered as a strategy to mitigate the onset of CCA in PSC patients, and warrants further experimental investigation. The analysis performed herein may be helpful in the identification of non-invasive biomarkers for the early detection of PSC and for predicting its progression into CCA. In conclusion, future clinical research should investigate in more depth the full potential of RBP transcripts as biomarkers for human pathologies.
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Affiliation(s)
- Ugo Ala
- Department of Veterinary Sciences, University of Turin, Turin, Italy
| | - Sharmila Fagoonee
- Institute of Biostructure and Bioimaging (CNR), Molecular Biotechnology Center “Guido Tarone”, Turin, Italy
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Underlying mechanisms of epithelial splicing regulatory proteins in cancer progression. J Mol Med (Berl) 2022; 100:1539-1556. [PMID: 36163376 DOI: 10.1007/s00109-022-02257-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/31/2022] [Accepted: 09/12/2022] [Indexed: 12/14/2022]
Abstract
Cancer is the second-leading disease-related cause of global mortality after cardiovascular disease. Despite significant advances in cancer therapeutic strategies, cancer remains one of the major obstacles to human life extension. Cancer pathogenesis is extremely complicated and not fully understood. Epithelial splicing regulatory proteins (ESRPs), including ESRP1 and ESRP2, belong to the heterogeneous nuclear ribonucleoprotein family of RNA-binding proteins and are crucial regulators of the alternative splicing of messenger RNAs (mRNAs). The expression and activity of ESRPs are modulated by various mechanisms, including post-translational modifications and non-coding RNAs. Although a growing body of evidence suggests that ESRP dysregulation is closely associated with cancer progression, the detailed mechanisms remain inconclusive. In this review, we summarize recent findings on the structures, functions, and regulatory mechanisms of ESRPs and focus on their underlying mechanisms in cancer progression. We also highlight the clinical implications of ESRPs as prognostic biomarkers and therapeutic targets in cancer treatment. The information reviewed herein could be extremely beneficial to the development of individualized therapeutic strategies for cancer patients.
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Expression of SARS-Cov-2 Entry Factors in Patients with Chronic Hepatitis. Viruses 2022; 14:v14112397. [PMID: 36366497 PMCID: PMC9699546 DOI: 10.3390/v14112397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 01/31/2023] Open
Abstract
Chronic hepatitis (CH) of dysmetabolic or viral etiology has been associated with poor prognosis in patients who experienced the severe acute respiratory coronavirus virus-2 (SARS-Cov-2) infection. We aimed to explore the impact of SARS-Cov-2 infection on disease severity in a group of patients with CH. Forty-two patients with CH of different etiology were enrolled (median age, 56 years; male gender, 59%). ACE2 and TMPRSS2 were measured in plasma samples of all patients by ELISA and in the liver tissue of a subgroup of 15 patients by Western blot. Overall, 13 patients (31%) experienced SARS-Cov-2 infection: 2/15 (15%) had CHB, 5/12 (39%) had CHC, and 6/15 (46%) had non-alcoholic fatty liver disease (NAFLD). Compared to viral CH patients, NAFLD subjects showed higher circulating ACE2 levels (p = 0.0019). Similarly, hepatic expression of ACE2 was higher in subjects who underwent SARS-Cov-2 infection compared to the counterpart, (3.24 ± 1.49 vs. 1.49 ± 1.32, p = 0.032). Conversely, hepatic TMPRSS2 was significantly lower in patients who experienced symptomatic COVID-19 disease compared to asymptomatic patients (p = 0.0038). Further studies are necessary to understand the impact of COVID-19 in patients with pre-existing liver diseases.
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Lee J, Pang K, Kim J, Hong E, Lee J, Cho HJ, Park J, Son M, Park S, Lee M, Ooshima A, Park KS, Yang HK, Yang KM, Kim SJ. ESRP1-regulated isoform switching of LRRFIP2 determines metastasis of gastric cancer. Nat Commun 2022; 13:6274. [PMID: 36307405 PMCID: PMC9616898 DOI: 10.1038/s41467-022-33786-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 10/03/2022] [Indexed: 12/25/2022] Open
Abstract
Although accumulating evidence indicates that alternative splicing is aberrantly altered in many cancers, the functional mechanism remains to be elucidated. Here, we show that epithelial and mesenchymal isoform switches of leucine-rich repeat Fli-I-interacting protein 2 (LRRFIP2) regulated by epithelial splicing regulatory protein 1 (ESRP1) correlate with metastatic potential of gastric cancer cells. We found that expression of the splicing variants of LRRFIP2 was closely correlated with that of ESRP1. Surprisingly, ectopic expression of the mesenchymal isoform of LRRFIP2 (variant 3) dramatically increased liver metastasis of gastric cancer cells, whereas deletion of exon 7 of LRRFIP2 by the CRISPR/Cas9 system caused an isoform switch, leading to marked suppression of liver metastasis. Mechanistically, the epithelial LRRFIP2 isoform (variant 2) inhibited the oncogenic function of coactivator-associated arginine methyltransferase 1 (CARM1) through interaction. Taken together, our data reveals a mechanism of LRRFIP2 isoform switches in gastric cancer with important implication for cancer metastasis.
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Affiliation(s)
- Jihee Lee
- GILO Institute, GILO Foundation, Seoul, 06668 Korea ,grid.410886.30000 0004 0647 3511Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Gyeonggi-do 13488 Korea
| | | | - Junil Kim
- grid.263765.30000 0004 0533 3568School of Systems Biomedical Science, Soongsil University, Seoul, 06978 Korea
| | - Eunji Hong
- GILO Institute, GILO Foundation, Seoul, 06668 Korea ,grid.264381.a0000 0001 2181 989XDepartment of Biomedical Science, College of Life Science, Sungkyunkwan University, Suwon, Gyeonggi-do 16419 Korea
| | - Jeeyun Lee
- grid.264381.a0000 0001 2181 989XDivision of Hematology-Oncology, Department of Medicine, Samsung Medical Center Sungkyunkwan University School of Medicine, Seoul, 06351 Korea
| | - Hee Jin Cho
- grid.258803.40000 0001 0661 1556Department of Biomedical Convergence Science and Technology, Kyungpook National University, Daegu, 41566 Korea ,grid.414964.a0000 0001 0640 5613Innovative Therapeutic Research Center, Precision Medicine Research Institute, Samsung Medical Center, Seoul, 06531 Republic of Korea
| | - Jinah Park
- GILO Institute, GILO Foundation, Seoul, 06668 Korea
| | - Minjung Son
- GILO Institute, GILO Foundation, Seoul, 06668 Korea ,grid.264381.a0000 0001 2181 989XDepartment of Biomedical Science, College of Life Science, Sungkyunkwan University, Suwon, Gyeonggi-do 16419 Korea
| | - Sihyun Park
- GILO Institute, GILO Foundation, Seoul, 06668 Korea
| | | | | | - Kyung-Soon Park
- grid.410886.30000 0004 0647 3511Department of Biomedical Science, College of Life Science, CHA University, Seongnam, Gyeonggi-do 13488 Korea
| | - Han-Kwang Yang
- grid.412484.f0000 0001 0302 820XDepartment of Surgery, Seoul National University Hospital, Seoul, 03080 Korea ,grid.31501.360000 0004 0470 5905Cancer Research Institute, Seoul National University, Seoul, 03080 Korea
| | | | - Seong-Jin Kim
- GILO Institute, GILO Foundation, Seoul, 06668 Korea ,Medpacto Inc., Seoul, 06668 Korea
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SAHAR NE, QADIR J, RIAZ SK, BAGABIR SA, MUNEER Z, SHEIKH AK, WAQAR SH, PELLICANO R, FAGOONEE S, HAQUE S, MALIK MF. Dysregulated expression of suppressor loop of circadian rhythm genes in colorectal cancer pathogenesis. Minerva Med 2022; 113:497-505. [DOI: 10.23736/s0026-4806.22.07981-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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