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Dhahri H, Saintilnord WN, Chandler D, Fondufe-Mittendorf YN. Beyond the Usual Suspects: Examining the Role of Understudied Histone Variants in Breast Cancer. Int J Mol Sci 2024; 25:6788. [PMID: 38928493 PMCID: PMC11203562 DOI: 10.3390/ijms25126788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 06/13/2024] [Accepted: 06/18/2024] [Indexed: 06/28/2024] Open
Abstract
The incorporation of histone variants has structural ramifications on nucleosome dynamics and stability. Due to their unique sequences, histone variants can alter histone-histone or histone-DNA interactions, impacting the folding of DNA around the histone octamer and the overall higher-order structure of chromatin fibers. These structural modifications alter chromatin compaction and accessibility of DNA by transcription factors and other regulatory proteins to influence gene regulatory processes such as DNA damage and repair, as well as transcriptional activation or repression. Histone variants can also generate a unique interactome composed of histone chaperones and chromatin remodeling complexes. Any of these perturbations can contribute to cellular plasticity and the progression of human diseases. Here, we focus on a frequently overlooked group of histone variants lying within the four human histone gene clusters and their contribution to breast cancer.
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Affiliation(s)
- Hejer Dhahri
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA or (H.D.); (W.N.S.)
- Department of Epigenetics, Van Andel Research Institute, Grand Rapids, MI 49503, USA;
| | - Wesley N. Saintilnord
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA or (H.D.); (W.N.S.)
- Department of Epigenetics, Van Andel Research Institute, Grand Rapids, MI 49503, USA;
- Department of Genetics, Washington University School of Medicine, St. Louis, MO 63110, USA
- The Edison Family Center of Genome Sciences and Systems Biology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Darrell Chandler
- Department of Epigenetics, Van Andel Research Institute, Grand Rapids, MI 49503, USA;
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Fang Z, Wang D, Sun F, Chang J, Yuan D, Lin S, Teng J. Circ-Luc7l Absence Attenuates Diabetic Nephropathy Progression by Reducing Mesangial Cell Excessive Proliferation, Inflammation, and Extracellular Matrix Accumulation via Mediating the miR-205-5p/Tgfbr1 Pathway. Biochem Genet 2024:10.1007/s10528-024-10694-9. [PMID: 38376578 DOI: 10.1007/s10528-024-10694-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 01/09/2024] [Indexed: 02/21/2024]
Abstract
Diabetic nephropathy (DN) threatens the survival quality of patients, with complex pathogenesis. Circular RNA (circRNA) dysregulation occurs in DN development. This work aimed to investigate the role of circ-Luc7l in DN cell models and related molecular mechanisms. The expression of circ-Luc7l, microRNA (miR)-205-5p, and transforming growth factor-beta receptor 1 (Tgfbr1) was examined by real-time quantitative PCR (RT-qPCR). Cell viability and proliferation were detected by Cell Counting Kit-8 (CCK-8) assay and EdU assay. The expression of extracellular matrix (ECM)-related markers and Tgrbr1 protein was measured by Western blot. The binding between miR-205-5p and circ-Luc7l or Tgfbr1 was validated by dual-luciferase reporter assay, RNA immunoprecipitation (RIP) assay, or RNA pull-down assay. Experimental animal models were established to elucidate the function of circ-Luc7l in vivo. Circ-Luc7l expression was notably enhanced in high glucose (HG)-treated mesangial cells. Knockdown of circ-Luc7l attenuated HG-induced cell proliferation, inflammation, and ECM accumulation in vitro and relieved inflammation and ECM accumulation of kidneys of diabetic mice in vivo. Circ-Luc7l targeted miR-205-5p, and miR-205-5p inhibition rescued the depletion effects of circ-Luc7l knockdown on cell proliferation, inflammation, and ECM accumulation. MiR-205-5p bound to Tgfbr1 whose expression was negatively regulated by circ-Luc7l. Tgfbr1 overexpression also rescued the depletion effects of circ-Luc7l knockdown on cell proliferation, inflammation, and ECM accumulation. In HG conditions, increased circ-Luc7l upregulated Tgfbr1 expression via targeting miR-205-5p to induce DN progression.
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Affiliation(s)
- Zhan Fang
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Dan Wang
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Fang Sun
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Jing Chang
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Dong Yuan
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Shuhua Lin
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China
| | - Jian Teng
- Department of Nephrology, Yantaishan Hospital, No. 91 Jiefang Road, Zhifu District, Yantai, 264000, Shandong, China.
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Jalili M, Tavakoli S, Kargar K, Rafat M, Rad FR. Spotlight on the Expanding Role of miR-647 in Human Cancers. Adv Biomed Res 2023; 12:170. [PMID: 37564440 PMCID: PMC10410432 DOI: 10.4103/abr.abr_369_22] [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: 10/29/2022] [Revised: 02/07/2023] [Accepted: 02/08/2023] [Indexed: 08/12/2023] Open
Abstract
MicroRNAs are a large group of small, non-coding ssRNAs (miRNAs) that have an epigenetically pivotal role in gene expression and other biological processes in cells and can be regarded as capable biomarkers for the early detection and management of cancer. The aim of the present review article is to summarize the evidence for recognizing the molecular mechanism, target genes, and clinical significance of miR-647 in different cancers. Multiple studies have demonstrated that aberrant expression of miR-647 could be found in a variety of malignancies, such as bladder cancer, cervical cancer, colorectal cancer, gastric cancer, glioma, hepatocellular carcinoma, non-small cell lung cancer, ovarian cancer, and prostate cancer have reported, notably, increase or decrease in expression of miR-647 so that it can function as a tumorigenic (oncomiR) or tumor suppressor gene. MiR-647 is effective in the proliferation, migration, and invasion of cancer cells by playing a function in cell cycle pathways. MiR-647 can be a valuable potential biomarker for assessing the extent of cancer, prognosis, and response to therapy and shows great therapeutic efficacy in different solid tumors. Moreover, serum concentrations of miR-647 are directly effective in decreasing overall survival and disease progression. So, an efficient therapeutic target can be the effect on miR-647 expression by antitumor drugs.
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Affiliation(s)
| | - Setayesh Tavakoli
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kamran Kargar
- Department of Prosthodontics, Shahed Medical University, Tehran, Iran
| | - Milad Rafat
- Student Research Committee, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Fatemeh R. Rad
- Student Research Committee, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
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Vetchinkina EA, Kalinkin AI, Kuznetsova EB, Kiseleva AE, Alekseeva EA, Nemtsova MV, Bure IV. Diagnostic and prognostic value of long non-coding RNA PROX1‑AS1 and miR-647 expression in gastric cancer. ADVANCES IN MOLECULAR ONCOLOGY 2022. [DOI: 10.17650/2313-805x-2022-9-4-50-60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Introduction. Gastric cancer remains one of the most common cancers and has a high mortality rate worldwide. Epigenetic alternations of non-coding RNAs (ncRNAs), including microRNAs and long ncRNAs can contribute to its pathogenesis and progression, and could be potent diagnostic and prognostic biomarkers.Aim. Estimation of PROX1‑AS1 and miR-647 expression in gastric cancer and investigation of its clinical significance. Materials and methods. Tumor and adjacent normal tissues (n = 62), and sectional normal tissue samples (n = 5) were included in the study. The expression of the ncRNAs was quantified by reverse transcription-polymerase chain reaction assay.Results. We have reviled the significant difference in the PROX1‑AS1 expression in tumor (p = 0.002) and non-tumor tissues (p <0.001) obtained from gastric cancer patients in comparison with sectional gastric tissues without pathology. Pearson correlation analysis confirmed a negative correlation between PROX1‑AS1 and miR-647 in gastric cancer both in tumor (р <0,001) and adjacent normal tissues (р <0.001). Besides, expression of PROX1‑AS1 and miR-647 was associated with the size and extent of the primary tumor.Conclusion. The obtained results allow to suggest a potential prognostic value of PROX1‑AS1 and miR-647 in gastric cancer.
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Affiliation(s)
- E. A. Vetchinkina
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia
| | | | - E. B. Kuznetsova
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia; N.P. Bochkov Medical and Genetic Research Center
| | - A. E. Kiseleva
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia
| | - E. A. Alekseeva
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia; N.P. Bochkov Medical and Genetic Research Center
| | - M. V. Nemtsova
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia; N.P. Bochkov Medical and Genetic Research Center
| | - I. V. Bure
- I.M. Sechenov First Moscow State Medical University, Ministry of Health of Russia
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Luo H, Xu C, Ge B, Wang T. CASC1 Expression in Bladder Cancer Is Regulated by Exosomal miRNA-150: A Comprehensive Pan-Cancer and Bioinformatics Study. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:8100325. [PMID: 35836922 PMCID: PMC9276518 DOI: 10.1155/2022/8100325] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/30/2022] [Accepted: 06/01/2022] [Indexed: 11/18/2022]
Abstract
This study explored the role of cancer susceptibility 1 (CASC1) in tumorigenesis and development as well as the key pathways affecting bladder cancer progression. CASC1 was examined in various normal tissues in humans using the HPA database to quantify its expression level and subcellular localization. CASC1 is abundantly expressed in tumor tissues, primarily in cytoplasmic vesicles and stroma. TIMER2 was used to analyze the correlation between CASC1 expression levels and the types of infiltrates associated with immune cells and immunosuppressive cells. MDSC, Treg, M2, and CAF were significantly correlated with CASC1 expression in various tumors. Comparing patients with and without CASC1 mutation, those with CASC1 mutation had worse overall survival, progression-free survival, and disease-free survival. The correlation between has-miR-150 and CASC1 (for the case of bladder cancer) was then analyzed, and the related ceRNA network was mapped. A negative relationship between CASC1 expression and has-miR-150 expression was found in cases of bladder cancer. And the presence of miR-150-targeted CASC1 may be associated with bladder cancer progression. CASC1 is expressed at elevated levels in various tumor tissues, and it is associated with tumorigenesis and development. Exosomes containing miR-150-targeted CASC1 may affect the progression of bladder cancer.
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Affiliation(s)
- Huarong Luo
- Department of Urology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chengdang Xu
- Department of Urology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Bujun Ge
- Department of General Surgery, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Tianru Wang
- Department of Urology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
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