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Gautron A, Migault M, Bachelot L, Corre S, Galibert MD, Gilot D. Human TYRP1: Two functions for a single gene? Pigment Cell Melanoma Res 2021; 34:836-852. [PMID: 33305505 DOI: 10.1111/pcmr.12951] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 11/12/2020] [Accepted: 12/01/2020] [Indexed: 01/07/2023]
Abstract
In the animal kingdom, skin pigmentation is highly variable between species, and it contributes to phenotypes. In humans, skin pigmentation plays a part in sun protection. Skin pigmentation depends on the ratio of the two pigments pheomelanin and eumelanin, both synthesized by a specialized cell population, the melanocytes. In this review, we explore one important factor in pigmentation: the tyrosinase-related protein 1 (TYRP1) gene which is involved in eumelanin synthesis via the TYRP1 protein. Counterintuitively, high TYRP1 mRNA expression is associated with a poor clinical outcome for patients with metastatic melanomas. Recently, we were able to explain this unexpected TYRP1 function by demonstrating that TYRP1 mRNA sequesters microRNA-16, a tumor suppressor miRNA. Here, we focus on actors influencing TYRP1 mRNA abundance, particularly transcription factors, single nucleotide polymorphisms (SNPs), and miRNAs, as they all dictate the indirect oncogenic activity of TYRP1.
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Affiliation(s)
- Arthur Gautron
- CNRS, IGDR (Institut de génétique et développement de Rennes) - UMR 6290, F-35000, Univ. Rennes, Rennes, France
| | - Mélodie Migault
- CNRS, IGDR (Institut de génétique et développement de Rennes) - UMR 6290, F-35000, Univ. Rennes, Rennes, France.,Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, SA, Australia
| | - Laura Bachelot
- CNRS, IGDR (Institut de génétique et développement de Rennes) - UMR 6290, F-35000, Univ. Rennes, Rennes, France
| | - Sébastien Corre
- CNRS, IGDR (Institut de génétique et développement de Rennes) - UMR 6290, F-35000, Univ. Rennes, Rennes, France
| | - Marie-Dominique Galibert
- CNRS, IGDR (Institut de génétique et développement de Rennes) - UMR 6290, F-35000, Univ. Rennes, Rennes, France.,CHU Rennes, Génétique Moléculaire et Génomique, UMR 6290, F-35000, Rennes, France
| | - David Gilot
- CNRS, IGDR (Institut de génétique et développement de Rennes) - UMR 6290, F-35000, Univ. Rennes, Rennes, France.,INSERM U1242, Centre Eugène Marquis, Rennes, France
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Zhang Y, Qin X, Jiang J, Zhao W. MicroRNA-126 exerts antitumor functions in ovarian cancer by targeting EGFL7 and affecting epithelial-to-mesenchymal transition and ERK/MAPK signaling pathway. Oncol Lett 2020; 20:1327-1335. [PMID: 32724375 PMCID: PMC7377137 DOI: 10.3892/ol.2020.11687] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 02/13/2020] [Indexed: 02/03/2023] Open
Abstract
Ovarian cancer (OC) is a common gynecological malignant carcinoma worldwide. Accumulating research has revealed that multiple microRNAs (miRNAs) are abnormally expressed at different levels in various malignancies, playing vital roles in tumorigenesis. This study investigated the regulatory functions and potential mechanism of miR-126 in OC proliferation, invasion and migration. It was found that miR-126 was prominently downregulated in OC. Moreover, the decrease of miR-126 promoted the aggressive phenotypes and indicated poor prognosis of OC patients. Functional assays demonstrated that restoration of miR-126 dramatically repressed OC cell proliferation, migration and invasion. Furthermore, luciferase reporter assay was conducted to verify putative binding sites of miR-126 in the epidermal growth factor-like domain 7 (EGFL7) 3 untranslated region (3'UTR), indicating that EGFL7 was a target gene of miR-126 in OC cells. It was further discovered that miR-126 exerts its function on regulating ERK/MAPK pathway and epithelial-to-mesenchymal transition (EMT) in OC cells. The above findings suggested that miR-126 served as a cancer suppressor in OC, suggesting a promising application of miR-126 in the clinical diagnosis and therapeutics of OC.
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Affiliation(s)
- Yuhua Zhang
- Reproductive Medicine Centre, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
| | - Xiaobo Qin
- Department of Obstetrics and Gynecology, Zhangqiu District Maternal and Child Health Care Hospital, Jinan, Shandong 250200, P.R. China
| | - Juan Jiang
- Department of Nursing, The Third People's Hospital of Qingdao, Qingdao, Shandong 266041, P.R. China
| | - Wenjie Zhao
- Reproductive Medicine Centre, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
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Bian A, Wang Y, Liu J, Wang X, Liu D, Jiang J, Ding L, Hui X. Circular RNA Complement Factor H (CFH) Promotes Glioma Progression by Sponging miR-149 and Regulating AKT1. Med Sci Monit 2018; 24:5704-5712. [PMID: 30111766 PMCID: PMC6108270 DOI: 10.12659/msm.910180] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background Circular RNAs (circRNAs) are widely expressed in mammals and can regulate the development and progression of human tumors. has_circ_0015758 (circ-CFH) is an exon circRNA transcript from the GRCh37/hg19 fragment of chromosome 1 and is homologous to the protein-coding gene complement factor H (CFH). Currently, the function of circ-CFH in glioma remains unclear. Material/Methods In our study, circ-CFH, miR-149, and Akt1 mRNA expression levels were analyzed by qRT-PCR assays. To investigate the function of circ-CFH in cell proliferation, circ-CFH knockdown models were established by using circ-CFH siRNAs. Cell proliferation abilities were measured by CCK-8 and colony formation assays and in vivo experiments. In addition, the interaction between circ-CFH and miR-149 was assessed by luciferase reporter assays. Results Circ-CFH expression was significantly upregulated in glioma tissue and was correlated with tumor grade. Circ-CFH expression levels were also markedly higher in U251 and U373 glioma cell lines. Circ-CFH knockdown inhibited cell proliferation and colony formation abilities. Luciferase assays indicated that circ-CFH functions as a miR-149 sponge and inhibits its function in U251 and U373 cells. Subsequently, AKT1 was identified as a direct target of the circ-CFH/miR-149 axis. Conclusions Circ-CFH promotes glioma progression by sponging miR-149 and regulating the AKT1 signaling pathway. The circ-CFH/miR-149/AKT1 regulation axis may be a potential target for glioma therapy.
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Affiliation(s)
- Aimiao Bian
- Department of Neurosurgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, China (mainland)
| | - Yanping Wang
- Department of Neurosurgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, China (mainland)
| | - Ji Liu
- Department of Neurosurgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, China (mainland)
| | - Xiaodong Wang
- Department of Neurosurgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, China (mainland)
| | - Dai Liu
- Department of Neurosurgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, China (mainland)
| | - Jian Jiang
- Department of Neurosurgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, China (mainland)
| | - Lianshu Ding
- Department of Neurosurgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, China (mainland)
| | - Xiaobo Hui
- Department of Neurosurgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, China (mainland)
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