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Ruan C, Li X, Hu J, Zhang Y, Zhao X. MITF and PU.1 inhibit adipogenesis of ovine primary preadipocytes by restraining C/EBPβ. Cell Mol Biol Lett 2017; 22:2. [PMID: 28536633 PMCID: PMC5415744 DOI: 10.1186/s11658-016-0032-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Accepted: 12/22/2016] [Indexed: 01/01/2023] Open
Abstract
Background PU box-binding protein (PU.1) is a master gene of hematopoietic lineage and an important specific transcription factor in osteoclast lineage. There is proof of its expression in adipose tissue, and it is known to significantly and negatively affect adipogenesis. However, it is unclear whether there are any other molecules involved in this process. Methods We wished to explore the effect of PU.1’s co-activator microphthalmia-associated transcription factor (MITF) on the adipogenic differentiation of ovine primary preadipocytes. The expression vectors pcDNA-MITF and pcDNA-PU.1, and MITF siRNA and PU.1 siRNA were transfected or co-transfected into ovine tail primary preadipocytes. Real-time PCR and western blot analysis were applied to investigate the expression levels of PU.1 and MITF. The morphologic changes in the cells were observed under a microscope at a magnification of × 200 after staining with Oil Red O. The triglyceride (TG) content in cells was also determined after transfection. Results MITF and its co-activator PU.1 synergistically exhibited an opposite expression pattern to that of CCAAT-enhancer-binding protein-β (C/EBPβ) during adipogenic differentiation of ovine primary preadipocytes. Before induction of differentiation, overexpression of MITF or PU.1 inhibited the expression of C/EBPβ and adipogenesis in the cells; and knockdown of MITF or PU.1 promoted the expression of C/EBPβ and adipogenesis in the cells. The inhibitory or promotive effect was enhanced when MITF and PU.1 were co-overexpressed or co-silenced. However, when MITF and/or PU.1 were overexpressed after day 2 of differentiation, no changes in adipogenesis of the cells were observed. Conclusions MITF and its co-activator PU.1 inhibited adipogenesis of ovine primary preadipocytes by restraining C/EBPβ. Electronic supplementary material The online version of this article (doi:10.1186/s11658-016-0032-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- ChongMei Ruan
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou, 730070 China
| | - Xiu Li
- College of Animal Science and Technology, Anhui Agriculture University, Hefei, 230036 China
| | - JunJie Hu
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou, 730070 China
| | - Yong Zhang
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou, 730070 China
| | - XingXu Zhao
- College of Veterinary Medicine, Gansu Agriculture University, Lanzhou, 730070 China
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Feng SD, Yang JH, Yao CH, Yang SS, Zhu ZM, Wu D, Ling HY, Zhang L. Potential regulatory mechanisms of lncRNA in diabetes and its complications. Biochem Cell Biol 2016; 95:361-367. [PMID: 28177764 DOI: 10.1139/bcb-2016-0110] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) are transcripts longer than 200 nucleotides without protein-coding potential. Although these molecules were initially considered as "junk products" of transcription without biological relevance, recent advances in research have shown that lncRNA plays an important role, not only in cellular processes such as proliferation, differentiation, and metabolism, but also in the pathological processes of cancers, diabetes, and neurodegenerative diseases. In this review, we focus on the potential regulatory roles of lncRNA in diabetes and the complications associated with diabetes.
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Affiliation(s)
- Shui-Dong Feng
- a Department of Social Medicine and Health Service Management, School of Public Health, University of South China, Hengyang, China
| | - Ji-Hua Yang
- b Department of Physiology, School of Medicine, University of South China, Hengyang, China
| | - Chao Hua Yao
- c Laboratory of Cell & Molecular Biology, Palmer Center for Chiropractic Research, Port Orange, Florida, USA
| | - Si-Si Yang
- b Department of Physiology, School of Medicine, University of South China, Hengyang, China
| | - Ze-Mei Zhu
- b Department of Physiology, School of Medicine, University of South China, Hengyang, China
| | - Di Wu
- b Department of Physiology, School of Medicine, University of South China, Hengyang, China
| | - Hong-Yan Ling
- b Department of Physiology, School of Medicine, University of South China, Hengyang, China
| | - Liang Zhang
- c Laboratory of Cell & Molecular Biology, Palmer Center for Chiropractic Research, Port Orange, Florida, USA
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53
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Long Noncoding RNAs in Metabolic Syndrome Related Disorders. Mediators Inflamm 2016; 2016:5365209. [PMID: 27881904 PMCID: PMC5110871 DOI: 10.1155/2016/5365209] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 10/05/2016] [Indexed: 02/06/2023] Open
Abstract
Ribonucleic acids (RNAs) are very complex and their all functions have yet to be fully clarified. Noncoding genes (noncoding RNA, sequences, and pseudogenes) comprise 67% of all genes and they are represented by housekeeping noncoding RNAs (transfer RNA (tRNA), ribosomal RNA (rRNA), small nuclear RNA (snRNA), and small nucleolar RNA (snoRNA)) that are engaged in basic cellular processes and by regulatory noncoding RNA (short and long noncoding RNA (ncRNA)) that are important for gene expression/transcript stability. In this review, we summarize data concerning the significance of long noncoding RNAs (lncRNAs) in metabolic syndrome related disorders, focusing on adipose tissue and pancreatic islands.
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Guo JC, Li CQ, Wang QY, Zhao JM, Ding JY, Li EM, Xu LY. Protein-coding genes combined with long non-coding RNAs predict prognosis in esophageal squamous cell carcinoma patients as a novel clinical multi-dimensional signature. MOLECULAR BIOSYSTEMS 2016; 12:3467-3477. [PMID: 27714034 DOI: 10.1039/c6mb00585c] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Esophageal carcinoma is one of the most malignant gastrointestinal cancers worldwide, and has a high mortality rate. Both protein-coding genes (PCGs) and long non-coding RNAs (lncRNAs) have been shown to play an important role in the development of malignant tumors. However, the clinical significance of PCGs combined lncRNAs is yet to be investigated in esophageal squamous cell carcinoma (ESCC). Using probe re-annotation, univariable Cox regression and the random survival forest algorithm to identify PCG-lncRNA combinations predictive of the overall survival, we found a signature comprised of three PCGs (ANGPTL7, OBP2A, SLC27A5) and two lncRNAs (RP11-702B10.1, RP11-523H24.3) to have the highest accurate prediction, with an area under ROC curve (AUC) of 0.85 in the training group and 0.63 in the test group, and it was significantly associated with the survival of ESCC patients in the training group (median survival: 32.2 months > 60 months, P < 0.001). The application of the signature to the test group showed similar prognostic values (median survival: 39.3 months vs. >60 months, P = 0.03). The chi-square test and multivariable Cox regression analysis showed that the three-PCG, two-lncRNA signature was an independent prognostic factor for patients with ESCC. Stratified analysis suggested that the PCG-lncRNA signature combined with the TNM stage could more accurately categorize ESCC patients. Our study suggests that the three-PCG, two-lncRNA signature has clinical significance for the prognosis of patients with ESCC. This signature can serve as a potential auxiliary biomarker of the TNM stage to subdivide ESCC patients more precisely.
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Affiliation(s)
- Jin-Cheng Guo
- Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou 515041, China and Department of Biochemistry and Molecular Biology, Shantou University Medical College, Shantou 515041, China.
| | - Chun-Quan Li
- Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou 515041, China and Institute of Oncologic Pathology, Shantou University Medical College, Shantou 515041, China.
| | - Qiu-Yu Wang
- Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou 515041, China and Institute of Oncologic Pathology, Shantou University Medical College, Shantou 515041, China.
| | - Jian-Mei Zhao
- Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou 515041, China and Department of Biochemistry and Molecular Biology, Shantou University Medical College, Shantou 515041, China.
| | - Ji-Yu Ding
- Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou 515041, China and Department of Biochemistry and Molecular Biology, Shantou University Medical College, Shantou 515041, China.
| | - En-Min Li
- Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou 515041, China and Department of Biochemistry and Molecular Biology, Shantou University Medical College, Shantou 515041, China.
| | - Li-Yan Xu
- Key Laboratory of Molecular Biology in High Cancer Incidence Coastal Chaoshan Area of Guangdong Higher Education Institutes, Shantou University Medical College, Shantou 515041, China and Institute of Oncologic Pathology, Shantou University Medical College, Shantou 515041, China.
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Abstract
MicroRNAs (miRNAs) are small non-coding RNA molecules consisting of approximately 20 to 22 nucleotides. They play a very important role in the regulation of gene expression. miRNAs can be found in different species and a variety of organs and tissues including adipose tissue. There are two types of adipose tissue in mammals: White adipose tissue (WAT) is the largest energy storage, whereas brown adipose tissue (BAT) dissipates energy to maintain body temperature. BAT was first identified in hibernating animals and newborns as a defense against cold. Later on, it was also discovered in human adults, suggesting its potential role in energy balance and metabolism. Moreover, "brown-like" adipocytes present in WAT depots, so called beige or brite (brown-in-white) cells, were discovered by several groups. In recent years, miRNAs were found to have important regulatory function during brown fat differentiation, brown fat activation and white fat "browning". In this review, we focus on the regulation of brown and beige fat by miRNAs including the role in their differentiation and function, providing evidence for their therapeutic potential in metabolic diseases.
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Affiliation(s)
- Yong Chen
- Institute of Pharmacology and Toxicology, University Hospital Bonn, University of Bonn, 53127 Bonn, Germany
| | - Ruping Pan
- Institute of Pharmacology and Toxicology, University Hospital Bonn, University of Bonn, 53127 Bonn, Germany
| | - Alexander Pfeifer
- Institute of Pharmacology and Toxicology, University Hospital Bonn, University of Bonn, 53127 Bonn, Germany.
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Signal B, Gloss BS, Dinger ME. Computational Approaches for Functional Prediction and Characterisation of Long Noncoding RNAs. Trends Genet 2016; 32:620-637. [PMID: 27592414 DOI: 10.1016/j.tig.2016.08.004] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 08/03/2016] [Accepted: 08/04/2016] [Indexed: 02/09/2023]
Abstract
Although a considerable portion of eukaryotic genomes is transcribed as long noncoding RNAs (lncRNAs), the vast majority are functionally uncharacterised. The rapidly expanding catalogue of mechanistically investigated lncRNAs has provided evidence for distinct functional subclasses, which are now ripe for exploitation as a general model to predict functions for uncharacterised lncRNAs. By utilising publicly-available genome-wide datasets and computational methods, we present several developed and emerging in silico approaches to characterise and predict the functions of lncRNAs. We propose that the application of these techniques provides valuable functional and mechanistic insight into lncRNAs, and is a crucial step for informing subsequent functional studies.
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Affiliation(s)
- Bethany Signal
- Garvan Institute of Medical Research, Sydney, Australia; St Vincent's Clinical School, University of New South Wales, Sydney, Australia
| | - Brian S Gloss
- Garvan Institute of Medical Research, Sydney, Australia; St Vincent's Clinical School, University of New South Wales, Sydney, Australia
| | - Marcel E Dinger
- Garvan Institute of Medical Research, Sydney, Australia; St Vincent's Clinical School, University of New South Wales, Sydney, Australia.
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57
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Long noncoding RNAs in cell differentiation and pluripotency. Cell Tissue Res 2016; 366:509-521. [PMID: 27365087 DOI: 10.1007/s00441-016-2451-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Accepted: 05/31/2016] [Indexed: 01/20/2023]
Abstract
Long noncoding RNAs (lncRNAs) were once regarded as nonfunctional by-products of transcription but their effects are now gradually being elucidated. Evidence suggests that lncRNAs play crucial roles in cell biology, especially in regulating gene expression. However, because of the diversity and complexity of their regulatory mechanisms, our knowledge of the function of lncRNAs represents only the tip of the iceberg. Recent studies have shown that lncRNAs are capable of regulating cell differentiation and pluripotency. Thus, we consider it to be an appropriate time to review the progress in understanding the role of lncRNAs in these two biological processes. In this review, the biological characteristics and regulatory mechanisms of lncRNAs at the chromatin remodeling level, transcriptional level and post-transcriptional level are described and recent advances in our comprehension of the role of lncRNAs in cell differentiation and pluripotency are discussed.
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58
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Long Non-coding RNA H19 Inhibits Adipocyte Differentiation of Bone Marrow Mesenchymal Stem Cells through Epigenetic Modulation of Histone Deacetylases. Sci Rep 2016; 6:28897. [PMID: 27349231 PMCID: PMC4924093 DOI: 10.1038/srep28897] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 06/10/2016] [Indexed: 02/06/2023] Open
Abstract
Bone marrow mesenchymal stem cells (BMSCs) exhibit an increased propensity toward adipocyte differentiation accompanied by a reduction in osteogenesis in osteoporotic bone marrow. However, limited knowledge is available concerning the role of long non-coding RNAs (lncRNAs) in the differentiation of BMSCs into adipocytes. In this study, we demonstrated that lncRNA H19 and microRNA-675 (miR-675) derived from H19 were significantly downregulated in BMSCs that were differentiating into adipocytes. Overexpression of H19 and miR-675 inhibited adipogenesis, while knockdown of their endogenous expression accelerated adipogenic differentiation. Mechanistically, we found that miR-675 targeted the 3' untranslated regions of the histone deacetylase (HDAC) 4-6 transcripts and resulted in deregulation of HDACs 4-6, essential molecules in adipogenesis. In turn, trichostatin A, an HDAC inhibitor, significantly reduced CCCTC-binding factor (CTCF) occupancy in the imprinting control region upstream of the H19 gene locus and subsequently downregulated the expression of H19. These results show that the CTCF/H19/miR-675/HDAC regulatory pathway plays an important role in the commitment of BMSCs into adipocytes.
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59
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Jain S, Thakkar N, Chhatai J, Pal Bhadra M, Bhadra U. Long non-coding RNA: Functional agent for disease traits. RNA Biol 2016; 14:522-535. [PMID: 27229269 DOI: 10.1080/15476286.2016.1172756] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
In recent years, long non-coding RNAs (lncRNAs) have attracted the attention of researchers with their involvement in all facets of life. LncRNAs are transcripts of more than 200 nucleotides which lack defined protein coding potential. Although they do not code for proteins, a large number of them are involved in regulating gene expression and translation. The presence of numerous lncRNAs in the human genome has prompted us to investigate the contribution of these molecules to human biology and medicine. In this review, we present the potential role of lncRNAs interlinked to different human diseases and genetic disorders. We also describe their role in cellular differentiation and aging and discuss their potential importance as biomarkers and as therapeutic agents.
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Affiliation(s)
- Sriyans Jain
- a Functional Genomics and Gene Silencing Group , CSIR- Center for Cellular and Molecular Biology , Hyderabad , India
| | - Nirav Thakkar
- a Functional Genomics and Gene Silencing Group , CSIR- Center for Cellular and Molecular Biology , Hyderabad , India
| | - Jagamohan Chhatai
- a Functional Genomics and Gene Silencing Group , CSIR- Center for Cellular and Molecular Biology , Hyderabad , India
| | - Manika Pal Bhadra
- b Centre for Chemical Biology , Indian Institute for Chemical Technology , Hyderabad , India
| | - Utpal Bhadra
- a Functional Genomics and Gene Silencing Group , CSIR- Center for Cellular and Molecular Biology , Hyderabad , India
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Long non-coding RNA ADNCR suppresses adipogenic differentiation by targeting miR-204. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2016; 1859:871-82. [PMID: 27156885 DOI: 10.1016/j.bbagrm.2016.05.003] [Citation(s) in RCA: 119] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 04/09/2016] [Accepted: 05/04/2016] [Indexed: 01/17/2023]
Abstract
Adipogenesis is a complex and precisely orchestrated process mediated by a network of adipogenic regulatory factors. Several studies have highlighted the relevance of lncRNAs in adipocyte differentiation, but the precise molecular mechanism has largely remained elusive. In the present study, we performed Ribo-Zero RNA-Seq to investigate both the poly(A)+and poly(A)-lncRNAs of in vitro cultured bovine preadipocytes and differentiated adipocytes. A stringent set of 2882 lncRNAs was finally identified. A comparison of the lncRNAs expression profiles revealed that 16 lncRNAs are differentially expressed during adipocyte differentiation. We focused on the most downregulated lncRNA, which we named adipocyte differentiation-associated long noncoding RNA (ADNCR). Mechanistically, ADNCR inhibited adipocyte differentiation by functioning as a competing endogenous RNA (ceRNA) for miR-204, thereby augmenting the expression of the miR-204 target gene, SIRT1, which is known to inhibit adipocyte differentiation and adipogenic gene expression by docking with NCoR and SMART to repress PPARγ activity. Our data not only provide a valuable genomic resource for the identification of lncRNAs with functional roles in adipocyte differentiation but also reveal new insights into understanding the mechanisms of adipogenic differentiation.
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61
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Wei S, Du M, Jiang Z, Hausman GJ, Zhang L, Dodson MV. Long noncoding RNAs in regulating adipogenesis: new RNAs shed lights on obesity. Cell Mol Life Sci 2016; 73:2079-87. [PMID: 26943803 PMCID: PMC5737903 DOI: 10.1007/s00018-016-2169-2] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Revised: 02/13/2016] [Accepted: 02/23/2016] [Indexed: 10/22/2022]
Abstract
Long noncoding RNAs (lncRNAs) are an emerging class of regulators involved in a myriad of biological processes. Recent studies have revealed that many lncRNAs play pivotal roles in regulating adipocyte development. Due to the prevalence of obesity and the serious effects of adiposity on human health and society development, it is necessary to summarize functions and recent advances of lncRNAs in adipogenesis. In this review, we highlight functional lncRNAs contributed to the regulation of adipogenesis, discussing their potential use as therapeutic targets to combat human obesity.
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Affiliation(s)
- Shengjuan Wei
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China
| | - Min Du
- Department of Animal Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Zhihua Jiang
- Department of Animal Sciences, Washington State University, Pullman, WA, 99164, USA
| | - Gary J Hausman
- Animal and Dairy Science, University of Georgia, Athens, GA, 30602-2771, USA
| | - Lifan Zhang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, People's Republic of China.
| | - Michael V Dodson
- Department of Animal Sciences, Washington State University, Pullman, WA, 99164, USA.
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62
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Li L, Wang M, Wang M, Wu X, Geng L, Xue Y, Wei X, Jia Y, Wu X. A long non-coding RNA interacts with Gfra1 and maintains survival of mouse spermatogonial stem cells. Cell Death Dis 2016; 7:e2140. [PMID: 26962690 PMCID: PMC4823932 DOI: 10.1038/cddis.2016.24] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 12/18/2015] [Accepted: 01/18/2016] [Indexed: 12/24/2022]
Abstract
Spermatogonial stem cells (SSCs) are unique male germline stem cells that support spermatogenesis and male fertility. Long non-coding RNAs (lncRNA) have been identified as key regulators of stem cell fate; however, their role in SSCs has not been explored. Here, we report that a novel spermatogonia-specific lncRNA (lncRNA033862) is essential for the survival of murine SSCs. LncRNA033862 is expressed in early spermatogonia including SSC and was among 805 lncRNAs identified by global expression profiling as responsive to glial cell-derived neurotrophic factor (GDNF), a growth factor required for SSC self-renewal and survival. LncRNA033862 is an antisense transcript of the GDNF receptor alpha1 (Gfra1) that lacks protein coding potential and regulates Gfra1 expression levels by interacting with Gfra1 chromatin. Importantly, lncRNA033862 knockdown severely impairs SSC survival and their capacity to repopulate recipient testes in a transplantation assay. Collectively, our data provide the first evidence that long non-coding RNAs (lncRNAs) regulate SSC fate.
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Affiliation(s)
- L Li
- State Key Laboratory of Reproductive Medicine (SKLRM), Nanjing Medical University, Nanjing, Jiangsu, China
| | - M Wang
- State Key Laboratory of Reproductive Medicine (SKLRM), Nanjing Medical University, Nanjing, Jiangsu, China
| | - M Wang
- State Key Laboratory of Reproductive Medicine (SKLRM), Nanjing Medical University, Nanjing, Jiangsu, China
| | - X Wu
- State Key Laboratory of Reproductive Medicine (SKLRM), Nanjing Medical University, Nanjing, Jiangsu, China
| | - L Geng
- State Key Laboratory of Reproductive Medicine (SKLRM), Nanjing Medical University, Nanjing, Jiangsu, China
| | - Y Xue
- State Key Laboratory of Reproductive Medicine (SKLRM), Nanjing Medical University, Nanjing, Jiangsu, China
| | - X Wei
- State Key Laboratory of Reproductive Medicine (SKLRM), Nanjing Medical University, Nanjing, Jiangsu, China
| | - Y Jia
- State Key Laboratory of Reproductive Medicine (SKLRM), Nanjing Medical University, Nanjing, Jiangsu, China
| | - X Wu
- State Key Laboratory of Reproductive Medicine (SKLRM), Nanjing Medical University, Nanjing, Jiangsu, China
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63
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Wang GQ, Wang Y, Xiong Y, Chen XC, Ma ML, Cai R, Gao Y, Sun YM, Yang GS, Pang WJ. Sirt1 AS lncRNA interacts with its mRNA to inhibit muscle formation by attenuating function of miR-34a. Sci Rep 2016; 6:21865. [PMID: 26902620 PMCID: PMC4763196 DOI: 10.1038/srep21865] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Accepted: 02/02/2016] [Indexed: 12/29/2022] Open
Abstract
Recent studies demonstrate the functions of long non-coding RNAs (lncRNAs) in mediating gene expression at the transcriptional or translational level. Our previous study identified a Sirt1 antisense (AS) lncRNA transcribed from the Sirt1 AS strand. However, its role and regulatory mechanism is still unknown in myogenesis. Here, functional analyses showed that Sirt1 AS lncRNA overexpression promoted myoblast proliferation, but inhibited differentiation. Mechanistically, Sirt1 AS lncRNA was found to activate its sense gene, Sirt1. The luciferase assay provided evidences that Sirt1 AS lncRNA interacted with Sirt1 3′ UTR and rescued Sirt1 transcriptional suppression by competing with miR-34a. In addition, RNA stability assay showed that Sirt1 AS lncRNA prolonged Sirt1 mRNA half-life from 2 to 10 h. Ribonuclease protection assay further indicated that it fully bound to Sirt1 mRNA in the myoblast cytoplasm. Moreover, Sirt1 AS overexpression led to less mouse weight than the control because of less lean mass and greater levels of Sirt1, whereas the fat mass and levels of miR-34a were not altered. Based on the findings, a novel regulatory mechanism was found that Sirt1 AS lncRNA preferably interacted with Sirt1 mRNA forming RNA duplex to promote Sirt1 translation by competing with miR-34a, inhibiting muscle formation.
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Affiliation(s)
- Guo-qiang Wang
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Yu Wang
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Yan Xiong
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Xiao-Chang Chen
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Mei-ling Ma
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Rui Cai
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Yun Gao
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Yun-mei Sun
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Gong-She Yang
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
| | - Wei-Jun Pang
- Laboratory of Animal Fat Deposition &Muscle Development, College of Animal Science and Technology, Northwest A&F University, Yangling Shaanxi 712100, China
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Song LJ, Zhang WJ, Chang ZW, Pan YF, Zong H, Fan QX, Wang LX. PU.1 Is Identified as a Novel Metastasis Suppressor in Hepatocellular Carcinoma Regulating the miR-615-5p/IGF2 Axis. Asian Pac J Cancer Prev 2016; 16:3667-71. [PMID: 25987019 DOI: 10.7314/apjcp.2015.16.9.3667] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Invasion and metastasis is the major cause of tumor recurrence, difficulty for cure and low survival rate. Excavating key transcription factors, which can regulate tumor invasion and metastasis, are crucial to the development of therapeutic strategies for cancers. PU.1 is a master hematopoietic transcription factor and a vital regulator in life. Here, we report that, compared to adjacent non-cancerous tissues, expression of PU.1 mRNA in metastatic hepatocellular carcinoma (HCC), but not primary HCC, was significantly down-regulated. In addition, levels of PU.1 mRNA in metastatic hepatoma cell lines MHCC97L and MHCC97H were much lower than in non-metastatic Hep3B cells. Transwell invasion assays after PU.1 siRNA transfection showed that the invasion of hepatoma cell lines was increased markedly by PU.1 knockdown. Oppositely, overexpression of PU.1 suppressed the invasion of these cells. However, knockdown and overexpression of PU.1 did not influence proliferation. Finally, we tried to explore the potential mechanism of PU.1 suppressing hepatoma cell invasion. ChIP-qPCR analysis showed that PU.1 exhibited a high binding capacity with miR-615-5p promoter sequence. Overexpression of PU.1 caused a dramatic increase of pri-, pre- and mature miR-615-5p, as well as a marked decrease of miR-615-5p target gene IGF2. These data indicate that PU.1 inhibits invasion of human HCC through promoting miR-615-5p and suppressing IGF2. These findings improve our understanding of PU.1 regulatory roles and provided a potential target for metastatic HCC diagnosis and therapy.
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Affiliation(s)
- Li-Jie Song
- Department of Oncology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China E-mail :
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Huang X, Hao C, Bao H, Wang M, Dai H. Aberrant expression of long noncoding RNAs in cumulus cells isolated from PCOS patients. J Assist Reprod Genet 2015; 33:111-21. [PMID: 26650608 DOI: 10.1007/s10815-015-0630-z] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 11/29/2015] [Indexed: 01/14/2023] Open
Abstract
PURPOSE To describe the long noncoding RNA (lncRNA) profiles in cumulus cells isolated from polycystic ovary syndrome (PCOS) patients by employing a microarray and in-depth bioinformatics analysis. This information will help us understand the occurrence and development of PCOS. METHODS In this study, we used a microarray to describe lncRNA profiles in cumulus cells isolated from ten patients (five PCOS and five normal women). Several differentially expressed lncRNAs were chosen to validate the microarray results by quantitative RT-PCR (qRT-PCR). Then, the differentially expressed lncRNAs were classified into three subgroups (HOX loci lncRNA, enhancer-like lncRNA, and lincRNA) to deduce their potential features. Furthermore, a lncRNA/mRNA co-expression network was constructed by using the Cytoscape software (V2.8.3, http://www.cytoscape.org/ ). RESULTS We observed that 623 lncRNAs and 260 messenger RNAs (mRNAs) were significantly up- or down-regulated (≥2-fold change), and these differences could be used to discriminate cumulus cells of PCOS from those of normal patients. Five differentially expressed lncRNAs (XLOC_011402, ENST00000454271, ENST00000433673, ENST00000450294, and ENST00000432431) were selected to validate the microarray results using quantitative RT-PCR (qRT-PCR). The qRT-PCR results were consistent with the microarray data. Further analysis indicated that many differentially expressed lncRNAs were transcribed from chromosome 2 and may act as enhancers to regulate their neighboring protein-coding genes. Forty-three lncRNAs and 29 mRNAs were used to construct the coding-non-coding gene co-expression network. Most pairs positively correlated, and one mRNA correlated with one or more lncRNAs. CONCLUSIONS Our study is the first to determine genome-wide lncRNA expression patterns in cumulus cells isolated from PCOS patients by microarray. The results show that clusters of lncRNAs were aberrantly expressed in cumulus cells of PCOS patients compared with those of normal women, which revealed that lncRNAs differentially expressed in PCOS and normal women may contribute to the occurrence of PCOS and affect oocyte development.
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Affiliation(s)
- Xin Huang
- Reproductive Medicine Centre, Affiliated Hospital of Qingdao Medical University, Yuhuangding Hospital of Yantai, 20 Yuhuangding Road East, Yantai, Shandong, 264000, People's Republic of China.
| | - Cuifang Hao
- Reproductive Medicine Centre, Affiliated Hospital of Qingdao Medical University, Yuhuangding Hospital of Yantai, 20 Yuhuangding Road East, Yantai, Shandong, 264000, People's Republic of China.
| | - Hongchu Bao
- Reproductive Medicine Centre, Affiliated Hospital of Qingdao Medical University, Yuhuangding Hospital of Yantai, 20 Yuhuangding Road East, Yantai, Shandong, 264000, People's Republic of China.
| | - Meimei Wang
- Reproductive Medicine Centre, Affiliated Hospital of Qingdao Medical University, Yuhuangding Hospital of Yantai, 20 Yuhuangding Road East, Yantai, Shandong, 264000, People's Republic of China.
| | - Huangguan Dai
- Reproductive Medicine Centre, Affiliated Hospital of Qingdao Medical University, Yuhuangding Hospital of Yantai, 20 Yuhuangding Road East, Yantai, Shandong, 264000, People's Republic of China.
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66
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Yang Z, Guo X, Li G, Shi Y, Li L. Long noncoding RNAs as potential biomarkers in gastric cancer: Opportunities and challenges. Cancer Lett 2015; 371:62-70. [PMID: 26577810 DOI: 10.1016/j.canlet.2015.11.011] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Revised: 11/05/2015] [Accepted: 11/05/2015] [Indexed: 02/06/2023]
Abstract
Gastric cancer (GC) is a major threat to human health, and its prognosis is poor due to the lack of appropriate biomarkers. LncRNAs are a group of non-protein-coding RNAs that regulate gene expression at the transcriptional or posttranscriptional level. LncRNAs play essential roles in GC initiation and development in the same way as oncogenes or tumour suppressor genes. Recent investigations have revealed that lncRNAs are often aberrantly expressed in GC; are involved in cell proliferation, apoptosis, migration and invasion; and correlate with the malignant phenotype of GC. LncRNAs, especially the lncRNAs present in the blood and gastric juice, show potential value as biomarkers for the diagnosis of GC or for determining disease prognosis. However, there are still many challenges to be faced before lncRNAs can be used in clinical applications. In this review, we summarise lncRNAs as the potential biomarkers for GC and the current challenges associated with the clinical application.
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Affiliation(s)
- Ziguo Yang
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Xiaobo Guo
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China.
| | - Guimei Li
- Department of Pediatrics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Yulong Shi
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
| | - Leping Li
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan 250021, China
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67
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Wei N, Wang Y, Xu RX, Wang GQ, Xiong Y, Yu TY, Yang GS, Pang WJ. PU.1antisense lncRNA against its mRNA translation promotes adipogenesis in porcine preadipocytes. Anim Genet 2015; 46:133-40. [DOI: 10.1111/age.12275] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/29/2014] [Indexed: 01/31/2023]
Affiliation(s)
- N. Wei
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - Y. Wang
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - R.-X. Xu
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - G.-Q. Wang
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - Y. Xiong
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - T.-Y. Yu
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - G.-S. Yang
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
| | - W.-J. Pang
- Laboratory of Animal Fat Deposition & Muscle Development; College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi 712100 China
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68
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Tye CE, Gordon JAR, Martin-Buley LA, Stein JL, Lian JB, Stein GS. Could lncRNAs be the missing links in control of mesenchymal stem cell differentiation? J Cell Physiol 2015; 230:526-34. [PMID: 25258250 DOI: 10.1002/jcp.24834] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 09/18/2014] [Indexed: 12/31/2022]
Abstract
Long suspected, recently recognized, and increasingly studied, non protein-coding RNAs (ncRNAs) are emerging as key drivers of biological control and pathology. Since their discovery in 1993, microRNAs (miRNAs) have been the subject of intense research focus and investigations have revealed striking findings, establishing that these molecules can exert a substantial level of biological control in numerous tissues. More recently, long ncRNAs (lncRNAs), the lesser-studied siblings of miRNA, have been suggested to have a similar robust role in developmental and adult tissue regulation. Mesenchymal stem cells (MSCs) are an important source of multipotent cells for normal and therapeutic tissue repair. Much is known about the critical role of miRNAs in biogenesis and differentiation of MSCs however; recent studies have suggested lncRNAs may play an equally important role in the regulation of these cells. Here we highlight the role of lncRNAs in the regulation of mesenchymal stem cell lineages including adipocytes, chondrocytes, myoblasts, and osteoblasts. In addition, the potential for these noncoding RNAs to be used as biomarkers for disease or therapeutic targets is also discussed.
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Affiliation(s)
- Coralee E Tye
- Department of Biochemistry and Vermont Cancer Center, University of Vermont College of Medicine, 89 Beaumont Avenue, Burlington, Vermont
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69
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Sun M, Kraus WL. From discovery to function: the expanding roles of long noncoding RNAs in physiology and disease. Endocr Rev 2015; 36:25-64. [PMID: 25426780 PMCID: PMC4309736 DOI: 10.1210/er.2014-1034] [Citation(s) in RCA: 314] [Impact Index Per Article: 34.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Long noncoding RNAs (lncRNAs) are a relatively poorly understood class of RNAs with little or no coding capacity transcribed from a set of incompletely annotated genes. They have received considerable attention in the past few years and are emerging as potentially important players in biological regulation. Here we discuss the evolving understanding of this new class of molecular regulators that has emerged from ongoing research, which continues to expand our databases of annotated lncRNAs and provide new insights into their physical properties, molecular mechanisms of action, and biological functions. We outline the current strategies and approaches that have been employed to identify and characterize lncRNAs, which have been instrumental in revealing their multifaceted roles ranging from cis- to trans-regulation of gene expression and from epigenetic modulation in the nucleus to posttranscriptional control in the cytoplasm. In addition, we highlight the molecular and biological functions of some of the best characterized lncRNAs in physiology and disease, especially those relevant to endocrinology, reproduction, metabolism, immunology, neurobiology, muscle biology, and cancer. Finally, we discuss the tremendous diagnostic and therapeutic potential of lncRNAs in cancer and other diseases.
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Affiliation(s)
- Miao Sun
- Laboratory of Signaling and Gene Regulation, Cecil H. and Ida Green Center for Reproductive Biology Sciences and Division of Basic Reproductive Biology Research, Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas, Texas 75390
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70
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Lane JM, Doyle JR, Fortin JP, Kopin AS, Ordovás JM. Development of an OP9 derived cell line as a robust model to rapidly study adipocyte differentiation. PLoS One 2014; 9:e112123. [PMID: 25409310 PMCID: PMC4237323 DOI: 10.1371/journal.pone.0112123] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 10/08/2014] [Indexed: 02/06/2023] Open
Abstract
One hallmark of obesity is adipocyte hypertrophy and hyperplasia. To gain novel insights into adipose biology and therapeutics, there is a pressing need for a robust, rapid, and informative cell model of adipocyte differentiation for potential RNAi and drug screens. Current models are prohibitive for drug and RNAi screens due to a slow differentiation time course and resistance to transfection. We asked if we could create a rapid, robust model of adipogenesis to potentially enable rapid functional and obesity therapeutic screens. We generated the clonal population OP9-K, which differentiates rapidly and reproducibly, and displays classic adipocyte morphology: rounded cell shape, lipid accumulation, and coalescence of lipids into a large droplet. We further validate the OP9-K cells as an adipocyte model system by microarray analysis of the differentiating transcriptome. OP9-K differentiates via known adipogenic pathways, involving the transcriptional activation and repression of common adipose markers Plin1, Gata2, C/Ebpα and C/Ebpβ and biological pathways, such as lipid metabolism, PPARγ signaling, and osteogenesis. We implemented a method to quantify lipid accumulation using automated microscopy and tested the ability of our model to detect alterations in lipid accumulation by reducing levels of the known master adipogenic regulator Pparγ. We further utilized our model to query the effects of a novel obesity therapeutic target, the transcription factor SPI1. We determine that reduction in levels of Spi1 leads to an increase in lipid accumulation. We demonstrate rapid, robust differentiation and efficient transfectability of the OP9-K cell model of adipogenesis. Together with our microscopy based lipid accumulation assay, adipogenesis assays can be achieved in just four days' time. The results of this study can contribute to the development of rapid screens with the potential to deepen our understanding of adipose biology and efficiently test obesity therapeutics.
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Affiliation(s)
- Jacqueline M. Lane
- Massachusetts General Hospital, Center for Human Genetics Research, 185 Cambridge Street, Boston, MA 02114, United States of America
- Division of Sleep Medicine, Brigham and Women's Hospital, 75 Francis St, Boston, MA 02115, United States of America
- Jean Mayer-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA 02111, United States of America
- * E-mail:
| | - Jamie R. Doyle
- Tufts Medical Center, Molecular Cardiology Research Institute, Molecular Pharmacology Research Center, 800 Washington St., Box 7703, Boston, MA 02111, United States of America
| | - Jean-Philippe Fortin
- Tufts Medical Center, Molecular Cardiology Research Institute, Molecular Pharmacology Research Center, 800 Washington St., Box 7703, Boston, MA 02111, United States of America
| | - Alan S. Kopin
- Tufts Medical Center, Molecular Cardiology Research Institute, Molecular Pharmacology Research Center, 800 Washington St., Box 7703, Boston, MA 02111, United States of America
| | - José M. Ordovás
- Jean Mayer-USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA 02111, United States of America
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71
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Ji S, Li W, Bao L, Han P, Yang W, Ma L, Meng F, Cao B. PU.1 promotes miR-191 to inhibit adipogenesis in 3T3-L1 preadipocytes. Biochem Biophys Res Commun 2014; 451:329-33. [DOI: 10.1016/j.bbrc.2014.07.130] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2014] [Accepted: 07/28/2014] [Indexed: 10/24/2022]
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72
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Wei N, Pang W, Wang Y, Xiong Y, Xu R, Wu W, Zhao C, Yang G. Knockdown of PU.1 mRNA and AS lncRNA regulates expression of immune-related genes in zebrafish Danio rerio. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2014; 44:315-319. [PMID: 24463314 DOI: 10.1016/j.dci.2014.01.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 01/15/2014] [Accepted: 01/16/2014] [Indexed: 06/03/2023]
Abstract
The transcription factor PU.1 plays a key role in the development of immune system. Recent evidence demonstrated bidirectional transcription and a sense/antisense transcriptional regulatory manner in PU.1 locus. However, the effect of PU.1 mRNA and its antisense long non-coding RNA (AS lncRNA) on adaptive immunity in vivo is still not clear. In this study, we first confirmed the expression of PU.1 AS lncRNA by strand-specific RT-PCR in zebrafish. Additionally, we found that GFP was detected in zebrafish kidney using tissue smears after zebrafish was intraperitoneally injected with pLentiHI-PU.1 shRNA or pLentiHI-PU.1 AS shRNA for 2 days. Moreover, on day 0, 2 and 4, the levels of PU.1 and immune-related genes including TCRAC, Rag2, AID, IgLC-1, mIg, and sIg mRNAs were detected using real-time qPCR. The results showed that the levels of PU.1 and above 6 immune-related gene mRNAs were significantly downregulated on day 2 (P<0.05) and day 4 (P<0.01) by the treatment with the pLentiHI-PU.1 shRNA, whereas these genes were markedly upregulated by the treatment with the pLentiHI-PU.1 AS shRNA. Based on our results, we suggested that the effects of PU.1 transcripts including mRNA and AS lncRNA on immune-related gene expression in zebrafish were opposite. To our knowledge, this was the first report that a novel functional AS lncRNA in adaptive immunity was transcribed from the zebrafish PU.1 locus. Our findings provided novel insight into further exploration on modulating adaptive immunity by regulating PU.1 mRNA and AS lncRNA.
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Affiliation(s)
- Ning Wei
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Weijun Pang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China.
| | - Yu Wang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Yan Xiong
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Ruxiang Xu
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Wenjing Wu
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Cunzhen Zhao
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Gongshe Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
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73
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Eades G, Zhang YS, Li QL, Xia JX, Yao Y, Zhou Q. Long non-coding RNAs in stem cells and cancer. World J Clin Oncol 2014; 5:134-141. [PMID: 24829860 PMCID: PMC4014785 DOI: 10.5306/wjco.v5.i2.134] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 01/22/2014] [Accepted: 03/04/2014] [Indexed: 02/06/2023] Open
Abstract
An overwhelming majority of the transcribed genome encodes for non-coding RNA (ncRNA) sequences. Deep sequencing of the transcriptome has uncovered tens of thousands of long ncRNA (lncRNA) sequences. However, little is known regarding the possible functions for a vast majority of these sequences. Among those lncRNAs whose function has been experimentally validated, most serve as regulators of gene expression. LncRNAs have been found to be critical to development and homeostasis and they have been implicated in several pathologies including cancer. Here, we examine the functions and underlying mechanisms of lncRNAs in stem cells and in cancer biology, areas linked by the actions of lncRNAs.
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74
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Wang Y, Pang WJ, Wei N, Xiong Y, Wu WJ, Zhao CZ, Shen QW, Yang GS. Identification, stability and expression of Sirt1 antisense long non-coding RNA. Gene 2014; 539:117-24. [PMID: 24480449 DOI: 10.1016/j.gene.2014.01.037] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Revised: 12/31/2013] [Accepted: 01/10/2014] [Indexed: 01/23/2023]
Abstract
Natural antisense transcripts (NATs) exist ubiquitously as pivotal molecules to regulate coding gene expression. Sirtuin 1 (Sirt1) is a NAD-dependent deacetylase which is involved in myogenesis. However, whether Sirt1 transcribes NAT during C2C12 differentiation is still unknown. In this study, we identified a Sirt1 NAT which was designated as Sirt1 antisense long non-coding RNA (AS lncRNA) by sequencing and bioinformatic analysis. The level of Sirt1 AS lncRNA was greater in spleen but less in muscle tissue. The expression of both Sirt1 mRNA and Sirt1 AS lncRNA decreased during C2C12 myogenic differentiation, whereas the levels of miR-34a, which targets Sirt1, increased gradually. We further found that the half-life of Sirt1 AS lncRNA was 10h, but that of Sirt1 mRNA was 6h in C2C12 cells treated with 2 μg/ml Actinomycin D. Therefore, compared with Sirt1 mRNA, Sirt1 AS lncRNA was more stable. Overexpression of Sirt1 AS lncRNA increased the levels of Sirt1 protein, whereas overexpression of Sirt1 AS lncRNA mutant did not affect the level of Sirt1 protein in C2C12 cells. Moreover, downregulation of Sirt1 mRNA caused by miR-34a was counteracted by Sirt1 AS lncRNA in C2C12 cells. Taken together, we identified a novel NAT of Sirt1 which implicated in myogenesis through regulating Sirt1 expression.
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Affiliation(s)
- Yu Wang
- College of Animal Science and Technology, Northwest A&F University, Laboratory of Animal Fat Deposition & Muscle Development, Yangling Shaanxi 712100, China.
| | - Wei-Jun Pang
- College of Animal Science and Technology, Northwest A&F University, Laboratory of Animal Fat Deposition & Muscle Development, Yangling Shaanxi 712100, China.
| | - Ning Wei
- College of Animal Science and Technology, Northwest A&F University, Laboratory of Animal Fat Deposition & Muscle Development, Yangling Shaanxi 712100, China
| | - Yan Xiong
- College of Animal Science and Technology, Northwest A&F University, Laboratory of Animal Fat Deposition & Muscle Development, Yangling Shaanxi 712100, China
| | - Wen-Jing Wu
- College of Animal Science and Technology, Northwest A&F University, Laboratory of Animal Fat Deposition & Muscle Development, Yangling Shaanxi 712100, China
| | - Cun-Zhen Zhao
- College of Animal Science and Technology, Northwest A&F University, Laboratory of Animal Fat Deposition & Muscle Development, Yangling Shaanxi 712100, China
| | - Qing-Wu Shen
- College of Animal Science and Technology, Northwest A&F University, Laboratory of Animal Fat Deposition & Muscle Development, Yangling Shaanxi 712100, China
| | - Gong-She Yang
- College of Animal Science and Technology, Northwest A&F University, Laboratory of Animal Fat Deposition & Muscle Development, Yangling Shaanxi 712100, China
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