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Kyurkchiyan SG, Stancheva G, Petkova V, Hadzhiev Y, Dobriyanova V, Popova D, Kaneva R, Popov TM. Exploration of the association between HIF3α mRNA and lncRNA MALAT1 in laryngeal squamous cell carcinoma by correlation analysis. Oncol Lett 2024; 28:292. [PMID: 38737978 PMCID: PMC11082855 DOI: 10.3892/ol.2024.14425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Accepted: 03/28/2024] [Indexed: 05/14/2024] Open
Abstract
Laryngeal squamous cell carcinoma (LSCC) is a significant global health burden, for which there has been limited evidence of improved survival rates. Although the roles of hypoxia-inducible factor (HIF)1α and HIF2α have been well documented in hypoxia, the involvement of HIF3α, particularly in LSCC, has been inadequately explored. The present study aimed to investigate the correlation between HIFα subunits and the hypoxia-related long noncoding RNAs (lncRNAs) MALAT1 and HOTAIR in 63 patients diagnosed with LSCC. Total RNA was extracted from fresh-frozen laryngeal tumor and adjacent normal tissues, and was subjected to reverse transcription-quantitative PCR for target detection. Statistical analyses were conducted using SPSS software, with significance set at P<0.05. The present study is the first, to the best of our knowledge, to report a positive moderate monotonic correlation (rs=0.347) and moderately strong positive linear correlation (r=0.630) between HIF3α mRNA and lncRNA MALAT1 in LSCC. Regression analysis revealed a direct association between 39.6% of both variables. Additionally, a positive correlation was observed between lncRNAs MALAT1 and HOTAIR (rs=0.353); HIF2α mRNA and lncRNA MALAT1 (rs=0.431); HIF3α mRNA and lncRNA HOTAIR (rs=0.279); and HIF3α mRNA and HIF2α mRNA (rs=0.285). Notably, a significant negative correlation (rs=-0.341) was detected between HIF3α mRNA and HIF1α mRNA, potentially indicative of the HIF switch or negative regulation. In addition, the present study investigated the association between HIFα subunits and the clinicopathological characteristics of patients. The results revealed a notable association between HIF1α transcript levels and the location of LSCC; specifically, subglottic tumors exhibited elevated HIF1α levels compared with glottic and supraglottic LSCC. Furthermore, a significant association was identified between HIF3α transcript levels and patient age (P=0.032) and positive family history (P=0.047). In conclusion, the present findings suggested a pivotal role for HIF3α in LSCC development, potentially involving direct regulation of lncRNA MALAT1. However, further research is warranted to elucidate its precise mechanisms.
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Affiliation(s)
- Silva Garo Kyurkchiyan
- Molecular Medicine Center, Department of Medical Chemistry and Biochemistry, Medical Faculty, Medical University, 1431 Sofia, Bulgaria
| | - Gergana Stancheva
- Molecular Medicine Center, Department of Medical Chemistry and Biochemistry, Medical Faculty, Medical University, 1431 Sofia, Bulgaria
| | - Veronika Petkova
- Molecular Medicine Center, Department of Medical Chemistry and Biochemistry, Medical Faculty, Medical University, 1431 Sofia, Bulgaria
| | - Yuliyan Hadzhiev
- Department of Ear and Nose Treatment, UMHAT ‘Tsaritsa Yoanna-ISUL’, Medical University, 1537 Sofia, Bulgaria
| | - Venera Dobriyanova
- Department of Ear and Nose Treatment, UMHAT ‘Tsaritsa Yoanna-ISUL’, Medical University, 1537 Sofia, Bulgaria
| | - Diana Popova
- Department of Ear and Nose Treatment, UMHAT ‘Tsaritsa Yoanna-ISUL’, Medical University, 1537 Sofia, Bulgaria
| | - Radka Kaneva
- Molecular Medicine Center, Department of Medical Chemistry and Biochemistry, Medical Faculty, Medical University, 1431 Sofia, Bulgaria
| | - Todor Miroslavov Popov
- Department of Ear and Nose Treatment, UMHAT ‘Tsaritsa Yoanna-ISUL’, Medical University, 1537 Sofia, Bulgaria
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Cuomo F, Dell'Aversana C, Chioccarelli T, Porreca V, Manfrevola F, Papulino C, Carafa V, Benedetti R, Altucci L, Cobellis G, Cobellis G. HIF3A Inhibition Triggers Browning of White Adipocytes via Metabolic Rewiring. Front Cell Dev Biol 2022; 9:740203. [PMID: 35096807 PMCID: PMC8790297 DOI: 10.3389/fcell.2021.740203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 12/13/2021] [Indexed: 12/15/2022] Open
Abstract
Maintenance of energy balance between intake and expenditure is a prerequisite of human health, disrupted in severe metabolic diseases, such as obesity and type 2 diabetes (T2D), mainly due to accumulation of white adipose tissue (WAT). WAT undergoes a morphological and energetic remodelling toward brown adipose tissue (BAT) and the BAT activation has anti-obesity potential. The mechanisms or the regulatory factors able to activate BAT thermogenesis have been only partially deciphered. Identifying novel regulators of BAT induction is a question of great importance for fighting obesity and T2D. Here, we evaluated the role of Hif3α in murine pre-adipocyte 3T3-L1 cell line, a versatile and well characterized biological model of adipogenesis, by gain- and loss-of function approaches and in thermogenesis-induced model in vivo. HIF3A is regulated by inflammation, it modulates lypolysis in adipose tissue of obese adults, but its role in energy metabolism has not previously been investigated. We characterized gene and protein expression patterns of adipogenesis and metabolic activity in vitro and mechanistically in vivo. Overexpression of Hif3α in differentiating adipocytes increases white fat cells, whereas silencing of Hif3α promotes “browning” of white cells, activating thermogenesis through upregulation of Ucp1, Elovl3, Prdm16, Dio2 and Ppargc1a genes. Investigating cell metabolism, Seahorse Real-Time Cell Metabolism Analysis showed that silencing of Hif3α resulted in a significant increase of mitochondrial uncoupling with a concomitant increase in acetyl-CoA metabolism and Sirt1 and Sirt3 expression. The causal Hif3α/Ucp1 inverse relation has been validated in Cannabinoid receptor 1 (CB1) knockout, a thermogenesis-induced model in vivo. Our data indicate that Hif3α inhibition triggers “browning” of white adipocytes activating the beneficial thermogenesis rewiring energy metabolism in vitro and in vivo. HIF3A is a novel player that controls the energy metabolism with potential applications in developing therapy to fight metabolic disorders, as obesity, T2D and ultimately cancer.
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Affiliation(s)
- Francesca Cuomo
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Napoli, Italy
| | - Carmela Dell'Aversana
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Napoli, Italy.,Institute Experimental Endocrinology and Oncology "Gaetano Salvatore" (IEOS)-National Research Council (CNR), Napoli, Italy
| | - Teresa Chioccarelli
- Department of Experimental Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Napoli, Italy
| | - Veronica Porreca
- Department of Experimental Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Napoli, Italy
| | - Francesco Manfrevola
- Department of Experimental Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Napoli, Italy
| | - Chiara Papulino
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Napoli, Italy
| | - Vincenzo Carafa
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Napoli, Italy
| | - Rosaria Benedetti
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Napoli, Italy
| | - Lucia Altucci
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Napoli, Italy.,Biogem Institute of Molecular and Genetic Biology, Ariano Irpino, Italy
| | - Gilda Cobellis
- Department of Experimental Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Napoli, Italy
| | - Gilda Cobellis
- Department of Precision Medicine, Università degli Studi della Campania "Luigi Vanvitelli", Napoli, Italy
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Liu Z, Zhao X, Jiang X, Zou S. Transcription of blunt snout bream (Megalobrama amblycephala) HIF3α and its localization in the nucleus under both normoxic and hypoxic conditions. Biochem Biophys Res Commun 2018; 500:443-449. [PMID: 29660343 DOI: 10.1016/j.bbrc.2018.04.099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 04/12/2018] [Indexed: 12/20/2022]
Abstract
Although hypoxia-inducible factor (HIF) 1α and 2α function as master regulators of the transcriptional response to hypoxia, the function of HIF3α and its responses to hypoxic stress remain unclear in teleost fish. Here, we characterized the HIF3α cDNA in hypoxia-sensitive blunt snout bream (Megalobrama amblycephala), with 3059 bp length, consisting of an open reading frame (ORF) encoding 643 amino acid residues. Blunt snout bream HIF3α mRNA was stably expressed during stages of embryonic development and in adult tissues. After a 4 h hypoxia stress, HIF3α mRNA of the juvenile fish was significantly upregulated in the liver, brain, and kidney, and restored to the pretreatment levels after a 24 h recovery. When tagged with enhanced green fluorescent protein (EGFP) and transfected into cultured HeLa cells, blunt snout bream HIF3α was mainly distributed in the nucleus under normoxia. Treatment of the cells with CoCl2 to mimic hypoxic conditions showed that there was no effect about the nuclear localization of HIF3α but a statistically significant increase in HIF3α protein levels. A nuclear localization signal (NLS) sequence at the C-terminus of HIF3α may exert positive effects in the process of nuclear localization. These results suggest that blunt snout bream HIF3α could be involved in different physiological functions under normoxia and hypoxia conditions.
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Affiliation(s)
- Ziyin Liu
- Genetics and Breeding Center for Blunt Snout Bream, Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Huchenghuan Road 999, Shanghai, 201306, China
| | - Xinyu Zhao
- Genetics and Breeding Center for Blunt Snout Bream, Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Huchenghuan Road 999, Shanghai, 201306, China
| | - Xiayun Jiang
- Genetics and Breeding Center for Blunt Snout Bream, Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Huchenghuan Road 999, Shanghai, 201306, China.
| | - Shuming Zou
- Genetics and Breeding Center for Blunt Snout Bream, Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture, Shanghai Ocean University, Huchenghuan Road 999, Shanghai, 201306, China.
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Abstract
Hypoxia-inducible factors (HIFs) are key regulators of the transcriptional response to hypoxic stress. Three inducible isoforms of HIF are present in mammals. HIF1α and HIF2α are the best characterized and structurally similar isoforms, while HIF3α is the most distantly related and is less studied. The HIF3α gene undergoes complex regulation and produces a large number of long and short mRNA splice variants, which are translated into different polypeptides. These molecules primarily act as negative regulators of HIF1α and HIF2α activity and transcriptional activators of target genes, according to the variant and the biological context. The present review provides an overview of the available, fragmented and sometimes contradictory information concerning the structure, expression and distinct roles of the HIF3α variants, in both hypoxic adaptation and in hypoxia-unrelated activities. The pathological consequences of HIF3α deregulation are also illustrated.
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Affiliation(s)
- Linda Ravenna
- CNR, Institute of Molecular Biology and Pathology, Rome, Italy
| | - Luisa Salvatori
- CNR, Institute of Molecular Biology and Pathology, Rome, Italy
| | - Matteo A Russo
- Laboratory of Molecular and Cellular Pathology, Consorzio MEBIC, San Raffaele University, Rome, Italy
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