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Cubillos-Zapata C, Martínez-García MÁ, Díaz-García E, García-Tovar S, Campos-Rodríguez F, Sánchez-de-la-Torre M, Nagore E, Martorell-Calatayud A, Blasco LH, Pastor E, Abad-Capa J, Montserrat JM, Cabriada-Nuño V, Cano-Pumarega I, Corral-Peñafiel J, Arias E, Mediano O, Somoza-González M, Dalmau-Arias J, Almendros I, Farré R, Gozal D, García-Río F. Obstructive sleep apnoea is related to melanoma aggressiveness through paraspeckle protein-1 upregulation. Eur Respir J 2023; 61:13993003.00707-2022. [PMID: 36265878 DOI: 10.1183/13993003.00707-2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 08/26/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND In patients with obstructive sleep apnoea (OSA), intermittent hypoxia induces overexpression of paraspeckle component (PSPC)1, a master modulator of transforming growth factor (TGF)-β signalling, which promotes cell cancer progression through epithelial-mesenchymal transition (EMT) and acquisition of cancer stem cell (CSC)-like features. However, the persistence of intermittent hypoxia-induced effects on PSPC1, and their consequences in cancer patients are not known. To this effect, circulating PSPC1 levels were compared in patients with cutaneous melanoma with or without OSA, and their relationship with tumour aggressiveness along with the in vitro effects of soluble PSPC1 and intermittent hypoxia on melanoma cell aggressiveness mechanisms were assessed. METHODS In 292 cutaneous melanoma patients, sleep studies and serum levels of PSPC1 and TGF-β were evaluated. The effect of PSPC1 on expression of EMT and CSC transcription factors was assessed using melanoma cell lines with patient sera under both normoxia and intermittent hypoxia conditions. RESULTS PSPC1 levels were higher in patients with moderate-severe OSA compared with mild OSA or non-OSA patients. Serum levels of PSPC1 were associated with several cutaneous melanoma clinical aggressiveness indicators. Both intermittent hypoxia exposures and serum from OSA patients upregulated TGF-β expression and amplified the expression of transcription factors associated with EMT activation and acquisition of CSC characteristics. CONCLUSION In cutaneous melanoma patients, OSA severity is associated with higher PSPC1 serum levels, which jointly with intermittent hypoxia would enhance the self-reprogramming capabilities of EMT and CSC feature acquisition of melanoma cells, promoting their intrinsic aggressiveness.
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Affiliation(s)
- Carolina Cubillos-Zapata
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Miguel Ángel Martínez-García
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
- Respiratory Department, Hospital Universitario y Politécnico la Fe, Valencia, Spain
| | - Elena Díaz-García
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Sara García-Tovar
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
| | - Francisco Campos-Rodríguez
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Respiratory Department, Hospital Universitario de Valme, IBIS, Seville, Spain
| | - Manuel Sánchez-de-la-Torre
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Precision Medicine in Chronic Diseases, Hospital Universitari Arnau de Vilanova-Santa Maria, IRB Lleida, Department of Nursing and Physiotherapy, Faculty of Nursing and Physiotherapy, University of Lleida, Lleida, Spain
| | - Eduardo Nagore
- Dermatology Department, Instituto Valenciano de Oncología, Valencia, Spain
| | | | - Luis Hernández Blasco
- Respiratory Department, ISABIAL, Hospital General Universitario de Alicante, Alicante, Spain
- Departamento Medicina Clinica, Universidad Miguel Hernandez, Elche, Spain
| | - Esther Pastor
- Respiratory Department, Hospital san Juan de Alicante, Alicante, Spain
| | - Jorge Abad-Capa
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Respiratory Department, Hospital Germans Trias i Pujol, Centro de investigacion Biomedica, Madrid, Spain
| | - Josep María Montserrat
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Respiratory Department, Hospital Clinic - IDIBAPS, Barcelona, Spain
| | | | | | - Jaime Corral-Peñafiel
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Respiratory Department, Hospital Universitario S. Pedro Alcántara, Cáceres, Spain
| | - Eva Arias
- Respiratory Department, Hospital 12 de Octubre, Madrid, Spain
| | - Olga Mediano
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Respiratory Department, Hospital Universitario de Guadalajara, Guadalajara, Spain
| | | | - Joan Dalmau-Arias
- Dermatology Department, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
| | - Isaac Almendros
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - Ramón Farré
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, Barcelona, Spain
- Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain
| | - David Gozal
- Department of Child Health, University of Missouri School of Medicine, Columbia, MO, USA
| | - Francisco García-Río
- Grupo de Enfermedades Respiratorias, Servicio de Neumología, Hospital Universitario La Paz-IdiPAZ, Madrid, Spain
- Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
- Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
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RNA-Binding Proteins in the Regulation of Adipogenesis and Adipose Function. Cells 2022; 11:cells11152357. [PMID: 35954201 PMCID: PMC9367552 DOI: 10.3390/cells11152357] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 01/27/2023] Open
Abstract
The obesity epidemic represents a critical public health issue worldwide, as it is a vital risk factor for many diseases, including type 2 diabetes (T2D) and cardiovascular disease. Obesity is a complex disease involving excessive fat accumulation. Proper adipose tissue accumulation and function are highly transcriptional and regulated by many genes. Recent studies have discovered that post-transcriptional regulation, mainly mediated by RNA-binding proteins (RBPs), also plays a crucial role. In the lifetime of RNA, it is bound by various RBPs that determine every step of RNA metabolism, from RNA processing to alternative splicing, nucleus export, rate of translation, and finally decay. In humans, it is predicted that RBPs account for more than 10% of proteins based on the presence of RNA-binding domains. However, only very few RBPs have been studied in adipose tissue. The primary aim of this paper is to provide an overview of RBPs in adipogenesis and adipose function. Specifically, the following best-characterized RBPs will be discussed, including HuR, PSPC1, Sam68, RBM4, Ybx1, Ybx2, IGF2BP2, and KSRP. Characterization of these proteins will increase our understanding of the regulatory mechanisms of RBPs in adipogenesis and provide clues for the etiology and pathology of adipose-tissue-related diseases.
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Lang YD, Jou YS. PSPC1 is a new contextual determinant of aberrant subcellular translocation of oncogenes in tumor progression. J Biomed Sci 2021; 28:57. [PMID: 34340703 PMCID: PMC8327449 DOI: 10.1186/s12929-021-00753-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 07/24/2021] [Indexed: 12/30/2022] Open
Abstract
Dysregulation of nucleocytoplasmic shuttling is commonly observed in cancers and emerging as a cancer hallmark for the development of anticancer therapeutic strategies. Despite its severe adverse effects, selinexor, a selective first-in-class inhibitor of the common nuclear export receptor XPO1, was developed to target nucleocytoplasmic protein shuttling and received accelerated FDA approval in 2019 in combination with dexamethasone as a fifth-line therapeutic option for adults with relapsed refractory multiple myeloma (RRMM). To explore innovative targets in nucleocytoplasmic shuttling, we propose that the aberrant contextual determinants of nucleocytoplasmic shuttling, such as PSPC1 (Paraspeckle component 1), TGIF1 (TGF-β Induced Factor Homeobox 1), NPM1 (Nucleophosmin), Mortalin and EBP50, that modulate shuttling (or cargo) proteins with opposite tumorigenic functions in different subcellular locations could be theranostic targets for developing anticancer strategies. For instance, PSPC1 was recently shown to be the contextual determinant of the TGF-β prometastatic switch and PTK6/β-catenin reciprocal oncogenic nucleocytoplasmic shuttling during hepatocellular carcinoma (HCC) progression. The innovative nucleocytoplasmic shuttling inhibitor PSPC1 C-terminal 131 polypeptide (PSPC1-CT131), which was developed to target both the shuttling determinant PSPC1 and the shuttling protein PTK6, maintained their tumor-suppressive characteristics and exhibited synergistic effects on tumor suppression in HCC cells and mouse models. In summary, targeting the contextual determinants of nucleocytoplasmic shuttling with cargo proteins having opposite tumorigenic functions in different subcellular locations could be an innovative strategy for developing new therapeutic biomarkers and agents to improve cancer therapy.
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Affiliation(s)
- Yaw-Dong Lang
- Institute of Biomedical Sciences, Academia Sinica, 11529, Taipei, Taiwan
| | - Yuh-Shan Jou
- Institute of Biomedical Sciences, Academia Sinica, 11529, Taipei, Taiwan.
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He H, Zhang L, Lin K, Huang Z, Zhou Y, Lin S, Su Y, Pan J. The Prognosis Value of PSPC1 Expression in Nasopharyngeal Cancer. Cancer Manag Res 2021; 13:3281-3291. [PMID: 33883941 PMCID: PMC8053714 DOI: 10.2147/cmar.s300567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 03/25/2021] [Indexed: 11/23/2022] Open
Abstract
Background Paraspeckle component 1 (PSPC1) is overexpressed in various cancer and correlated with poor survival in the patients. However, little is known about its expression and role in the progression of nasopharyngeal carcinomas (NPC). The purpose of this study is to examine PSPC1 expression in NPC and explore its role in clinical prognosis of radiation therapy. Methods The association of PSPC1 expression with clinicopathological features of 109 NPC patients was examined using partial correlation analysis. Cancer tissues were obtained prior to clinical treatment. All cases were diagnosed and pathologically confirmed to be poorly differentiated or undifferentiated NPC without distant metastasis. The patients were then treated with radiation and followed-up. Survival analysis was performed. Results Partial correlation analysis revealed that the PSPC1 expression in NPC was correlated with N classification, recurrence, prognosis and radiosensitivity in NPC patients, but not with the gender, age, pathohistological pattern, clinical stage, and T classification. The overexpression of PSPC1 was detected in 64 samples (58.72%). Kaplan–Meier survival analysis revealed that the overall survival (OS) was longer in NPC patients with PSPC1 low expression than that in those with PSPC1 high expression. Moreover, patients with the overexpression of PSPC1 had a low progression-free survival and distant metastasis-free survival rate, compared to those who had a low expression of PSPC1. Although not statistically significant, patients with high expression of PSPC1 had a lower locoregional recurrence-free survival rate than those with low expression, and the curves between the two groups was well separated. Conclusion PSPC1 overexpression was associated with poor prognosis for NPC, which might be a novel useful biomarker to predict the response of NPC to radiation therapy and its clinical outcome.
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Affiliation(s)
- Huocong He
- Laboratory of Radiation Biology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian, 350014, People's Republic of China
| | - Lurong Zhang
- Laboratory of Radiation Biology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian, 350014, People's Republic of China
| | - Keyu Lin
- Laboratory of Radiation Biology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian, 350014, People's Republic of China
| | - Zhengrong Huang
- Department of Integrative Medicine, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian, 350014, People's Republic of China
| | - Yan Zhou
- Department of Epidemiology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian, 350014, People's Republic of China
| | - Shaojun Lin
- Department of Radiation Oncology, Fujian Cancer Hospital & Fujian Medical University, Fuzhou, Fujian, 350014, People's Republic of China
| | - Ying Su
- Laboratory of Radiation Biology, Fujian Cancer Hospital & Fujian Medical University Cancer Hospital, Fuzhou, Fujian, 350014, People's Republic of China
| | - Jianru Pan
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian, 350002, People's Republic of China
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Jen HW, Gu DL, Lang YD, Jou YS. PSPC1 Potentiates IGF1R Expression to Augment Cell Adhesion and Motility. Cells 2020; 9:cells9061490. [PMID: 32570949 PMCID: PMC7349238 DOI: 10.3390/cells9061490] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/06/2020] [Accepted: 06/16/2020] [Indexed: 02/05/2023] Open
Abstract
Paraspeckle protein 1 (PSPC1) overexpression in cancers is known to be the pro-metastatic switch of tumor progression associated with poor prognosis of cancer patients. However, the detail molecular mechanisms to facilitate cancer cell migration remain elusive. Here, we conducted integrated analysis of human phospho-kinase antibody array, transcriptome analysis with RNA-seq, and proteomic analysis of protein pulldown to study the molecular detail of PSPC1-potentiated phenotypical transformation, adhesion, and motility in human hepatocellular carcinoma (HCC) cells. We found that PSPC1 overexpression re-assembles and augments stress fiber formations to promote recruitment of focal adhesion contacts at the protruding edge to facilitate cell migration. PSPC1 activated focal adhesion-associated kinases especially FAK/Src signaling to enhance cell adhesion and motility toward extracellular matrix (ECM). Integrated transcriptome and gene set enrichment analysis indicated that PSPC1 modulated receptor tyrosine kinase IGF1R involved in the focal adhesion pathway and induction of diverse integrins expression. Knockdown IGF1R expression and treatment of IGF1R inhibitor suppressed PSPC1-induced cell motility. Interestingly, knockdown PSPC1-interacted paraspeckle components including NONO, FUS, and the lncRNA Neat1 abolished PSPC1-activated IGF1R expression. Together, PSPC1 overexpression induced focal adhesion formation and facilitated cell motility via activation of IGF1R signaling. PSPC1 overexpression in tumors could be a potential biomarker of target therapy with IGF1R inhibitor for improvement of HCC therapy.
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Affiliation(s)
- Hsin-Wei Jen
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 11490, Taiwan;
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan; (D.-L.G.); (Y.-D.L.)
| | - De-Leung Gu
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan; (D.-L.G.); (Y.-D.L.)
| | - Yaw-Dong Lang
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan; (D.-L.G.); (Y.-D.L.)
| | - Yuh-Shan Jou
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 11490, Taiwan;
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan; (D.-L.G.); (Y.-D.L.)
- Correspondence:
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