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Ropio J, Prochazkova-Carlotti M, Batista R, Pestana A, Chebly A, Ferrer J, Idrissi Y, Cappellen D, Durães C, Boaventura P, Vinagre J, Azzi-Martin L, Poglio S, Cabeçadas J, Campos MA, Beylot-Barry M, Sobrinho-Simões M, Merlio JP, Soares P, Chevret E. Spotlight on hTERT Complex Regulation in Cutaneous T-Cell Lymphomas. Genes (Basel) 2023; 14:439. [PMID: 36833366 PMCID: PMC9956048 DOI: 10.3390/genes14020439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/05/2023] [Accepted: 02/06/2023] [Indexed: 02/11/2023] Open
Abstract
As a major cancer hallmark, there is a sustained interest in understanding the telomerase contribution to carcinogenesis in order to therapeutically target this enzyme. This is particularly relevant in primary cutaneous T-cell lymphomas (CTCL), a malignancy showing telomerase dysregulation with few investigative data available. In CTCL, we examined the mechanisms involved in telomerase transcriptional activation and activity regulation. We analyzed 94 CTCL patients from a Franco-Portuguese cohort, as well as 8 cell lines, in comparison to 101 healthy controls. Our results showed that not only polymorphisms (SNPs) located at the promoter of human telomerase reverse transcriptase (hTERT) gene (rs2735940 and rs2853672) but also an SNP located within the coding region (rs2853676) could influence CTCL occurrence. Furthermore, our results sustained that the post-transcriptional regulation of hTERT contributes to CTCL lymphomagenesis. Indeed, CTCL cells present a different pattern of hTERT spliced transcripts distribution from the controls, mostly marked by an increase in the hTERT β+ variants proportion. This increase seems to be associated with CTCL development and progression. Through hTERT splicing transcriptome modulation with shRNAs, we observed that the decrease in the α-β+ transcript induced a decrease in the cell proliferation and tumorigenic capacities of T-MF cells in vitro. Taken together, our data highlight the major role of post-transcriptional mechanisms regulating telomerase non canonical functions in CTCL and suggest a new potential role for the α-β+ hTERT transcript variant.
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Affiliation(s)
- Joana Ropio
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, 33000 Bordeaux, France
- Institute of Biomedical Sciences of Abel Salazar, Porto University, 4050-313 Porto, Portugal
- Faculty of Veterinary Medicine, Lusófona University, 1749-024 Lisbon, Portugal
| | | | - Rui Batista
- Institute for Research and Innovation in Health (I3S), Porto University, 4200-135 Porto, Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Cancer Biology Group, Porto University, 4200-465 Porto, Portugal
- Faculty of Medicine, Porto University, 4200-319 Porto, Portugal
| | - Ana Pestana
- Institute for Research and Innovation in Health (I3S), Porto University, 4200-135 Porto, Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Cancer Biology Group, Porto University, 4200-465 Porto, Portugal
- Faculty of Medicine, Porto University, 4200-319 Porto, Portugal
| | - Alain Chebly
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, 33000 Bordeaux, France
- Medical Genetics Unit, Faculty of Medicine, Saint Joseph University, Beirut 1104 2020, Lebanon
- Higher Institute of Public Health, Saint Joseph University, Beirut 1104 2020, Lebanon
| | - Jacky Ferrer
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, 33000 Bordeaux, France
| | - Yamina Idrissi
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, 33000 Bordeaux, France
| | - David Cappellen
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, 33000 Bordeaux, France
- Tumor Bank and Tumor Biology Laboratory, Bordeaux University Hospital, 33075 Bordeaux, France
| | - Cecília Durães
- Institute for Research and Innovation in Health (I3S), Porto University, 4200-135 Porto, Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Cancer Biology Group, Porto University, 4200-465 Porto, Portugal
| | - Paula Boaventura
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Cancer Biology Group, Porto University, 4200-465 Porto, Portugal
| | - João Vinagre
- Institute for Research and Innovation in Health (I3S), Porto University, 4200-135 Porto, Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Cancer Biology Group, Porto University, 4200-465 Porto, Portugal
| | - Lamia Azzi-Martin
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, 33000 Bordeaux, France
- UFR des Sciences Médicales, Bordeaux University, 33076 Bordeaux, France
| | - Sandrine Poglio
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, 33000 Bordeaux, France
| | - José Cabeçadas
- Dermatology Departement, Instituto Português de Oncologia de Lisboa (IPO-L), 1099-023 Lisbon, Portugal
| | - Manuel António Campos
- Institute for Research and Innovation in Health (I3S), Porto University, 4200-135 Porto, Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Cancer Biology Group, Porto University, 4200-465 Porto, Portugal
- Faculty of Medicine, Porto University, 4200-319 Porto, Portugal
- Centro Hospitalar Vila Nova de Gaia/Espinho, E.P.E., Dermatology Departement, 4434-502 Vila Nova de Gaia, Portugal
| | - Marie Beylot-Barry
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, 33000 Bordeaux, France
- Dermatology Department, Bordeaux University Hospital, 33075 Bordeaux, France
| | - Manuel Sobrinho-Simões
- Institute for Research and Innovation in Health (I3S), Porto University, 4200-135 Porto, Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Cancer Biology Group, Porto University, 4200-465 Porto, Portugal
- Faculty of Medicine, Porto University, 4200-319 Porto, Portugal
- Department of Pathology, Faculty of Medicine, Porto University, 4200-319 Porto, Portugal
| | - Jean-Philippe Merlio
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, 33000 Bordeaux, France
- Tumor Bank and Tumor Biology Laboratory, Bordeaux University Hospital, 33075 Bordeaux, France
| | - Paula Soares
- Institute for Research and Innovation in Health (I3S), Porto University, 4200-135 Porto, Portugal
- Institute of Molecular Pathology and Immunology of the University of Porto (IPATIMUP), Cancer Biology Group, Porto University, 4200-465 Porto, Portugal
- Faculty of Medicine, Porto University, 4200-319 Porto, Portugal
- Department of Pathology, Faculty of Medicine, Porto University, 4200-319 Porto, Portugal
| | - Edith Chevret
- BRIC (BoRdeaux Institute of onCology), UMR1312, INSERM, University of Bordeaux, 33000 Bordeaux, France
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