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Zhang W, Wang L, Raza SHA, Wang X, Wang G, Liang C, Cheng G, Li B, Zan L. MiR-33a plays an crucial role in the proliferation of bovine preadipocytes. Adipocyte 2021; 10:189-200. [PMID: 33840361 PMCID: PMC8043176 DOI: 10.1080/21623945.2021.1908655] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 03/18/2021] [Accepted: 03/22/2021] [Indexed: 02/08/2023] Open
Abstract
Preadipocyte proliferation is a critical and precisely orchestrated procedure in adipogenesis, which is highly regulated by microRNAs (miRNAs). A previous study identified that the expression of miR-33a is different in intramuscular fat (IMF) tissues from steers and bulls. In the present study, miR-33a was overexpressed in bovine preadipocytes, and a total of 781 differentialy expressed genes were found, including 348 upregulated and 433 downregulated genes. Gene Ontology and Kyoto Encyclopaedia of Genes and Genomes (KEGG) pathway analyses of the differentially expressed genes enriched cell division and cell cycle respectively. MiR-33a overexpression decreased the rate of preadipocyte proliferation. Synchronously, the mRNA and protein expression levels of proliferation-related marker genes, including cyclin B1 (CCNB1) and proliferating cell nuclear antigen (PCNA), were decreased. In contrast, inhibiting miR-33a increased the rate of preadipocyte proliferation, and expression levels of CCNB1 and PCNA. Furthermore, based on luciferase reporter assays, miR-33a targeted directly cyclin-dependent kinase 6 (CDK6)-3'UTR and inhibited CDK6 protein expression. Interestingly, the silencing of CDK6 inhibited bovine preadipocyte proliferation and proliferation-related genes. Therefore, miR-33a inhibits the proliferation of bovine preadipocytes. CDK6 is the target gene of miR-33a and may be involved in the effects of miR-33a on bovine preadipocyte proliferation.
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Affiliation(s)
- Wenzhen Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Li Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Sayed Haidar Abbas Raza
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Xiaoyu Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Guohu Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Chengcheng Liang
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Gong Cheng
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Bingzhi Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
| | - Linsen Zan
- College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, P.R. China
- National Beef Cattle Improvement Center, Northwest A&F University, Yangling, Shaanxi, P.R. China
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Cui XY, Zhan JK, Liu YS. Roles and functions of antisense lncRNA in vascular aging. Ageing Res Rev 2021; 72:101480. [PMID: 34601136 DOI: 10.1016/j.arr.2021.101480] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/08/2021] [Accepted: 09/27/2021] [Indexed: 12/13/2022]
Abstract
Vascular aging is a major cause of morbidity and mortality in the elderly population. Endothelial cells (ECs) and vascular smooth muscle cells (VSMCs), forming the intima and media layers of the vessel wall respectively, are closely associated with the process of vascular aging and vascular aging-related diseases. Numerous studies have revealed the pathophysiologic mechanism through which lncRNA contributes to vascular aging, hence more attention is now paid to the role played by antisense long non-coding RNA (AS-lncRNA) in the pathogenesis of vascular aging. Nonetheless, only a small number of studies focus on the specific mechanism through which AS-lncRNA mediates vascular aging. In this review, we summarize the roles and functions of AS-lncRNA with regards to the development of vascular aging and vascular aging-related disease. We also aim to deepen our understanding of this process and provide alternative therapeutic modalities for vascular aging-related diseases.
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Affiliation(s)
- Xing-Yu Cui
- Department of Geriatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China; Institute of Aging and Age-related Disease Research, Central South University, Changsha, Hunan 410011, China
| | - Jun-Kun Zhan
- Department of Geriatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China; Institute of Aging and Age-related Disease Research, Central South University, Changsha, Hunan 410011, China.
| | - You-Shuo Liu
- Department of Geriatrics, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China; Institute of Aging and Age-related Disease Research, Central South University, Changsha, Hunan 410011, China.
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