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Yazarlou F, Alizadeh F, Lipovich L, Giordo R, Ghafouri-Fard S. Tracing vitamins on the long non-coding lane of the transcriptome: vitamin regulation of LncRNAs. GENES & NUTRITION 2024; 19:5. [PMID: 38475720 PMCID: PMC10935982 DOI: 10.1186/s12263-024-00739-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 01/30/2024] [Indexed: 03/14/2024]
Abstract
A major revelation of genome-scale biological studies in the post-genomic era has been that two-thirds of human genes do not encode proteins. The majority of non-coding RNA transcripts in humans are long non-coding RNA (lncRNA) molecules, non-protein-coding regulatory transcripts with sizes greater than 500 nucleotides. LncRNAs are involved in nearly every aspect of cellular physiology, playing fundamental regulatory roles both in normal cells and in disease. As result, they are functionally linked to multiple human diseases, from cancer to autoimmune, inflammatory, and neurological disorders. Numerous human conditions and diseases stem from gene-environment interactions; in this regard, a wealth of reports demonstrate that the intake of specific and essential nutrients, including vitamins, shapes our transcriptome, with corresponding impacts on health. Vitamins command a vast array of biological activities, acting as coenzymes, antioxidants, hormones, and regulating cellular proliferation and coagulation. Emerging evidence suggests that vitamins and lncRNAs are interconnected through several regulatory axes. This type of interaction is expected, since lncRNA has been implicated in sensing the environment in eukaryotes, conceptually similar to riboswitches and other RNAs that act as molecular sensors in prokaryotes. In this review, we summarize the peer-reviewed literature to date that has reported specific functional linkages between vitamins and lncRNAs, with an emphasis on mammalian models and humans, while providing a brief overview of the source, metabolism, and function of the vitamins most frequently investigated within the context of lncRNA molecular mechanisms, and discussing the published research findings that document specific connections between vitamins and lncRNAs.
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Affiliation(s)
- Fatemeh Yazarlou
- Center for Childhood Cancer, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Box 505055, Dubai, United Arab Emirates
| | - Fatemeh Alizadeh
- Department of Genomic Psychiatry and Behavioral Genomics (DGPBG), Roozbeh Hospital, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Leonard Lipovich
- Department of Biology, College of Science, Mathematics, and Technology, Wenzhou-Kean University, Wenzhou, Zhejiang Province, China
- Shenzhen Huayuan Biological Science Research Institute, Shenzhen Huayuan Biotechnology Co. Ltd., 601 Building C1, Guangming Science Park, Fenghuang Street, 518000, Shenzhen, Guangdong, People's Republic of China
- Center for Molecular Medicine and Genetics, School of Medicine, Wayne State University, 3222 Scott Hall, 540 E. Canfield St., Detroit, MI, 48201, USA
| | - Roberta Giordo
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Box 505055, Dubai, United Arab Emirates.
- Department of Biomedical Sciences, University of Sassari, Viale San Pietro, Sassari, 07100, Italy.
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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2
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Gawade K, Raczynska KD. Imprinted small nucleolar RNAs: Missing link in development and disease? WILEY INTERDISCIPLINARY REVIEWS. RNA 2023:e1818. [PMID: 37722601 DOI: 10.1002/wrna.1818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/31/2023] [Accepted: 08/31/2023] [Indexed: 09/20/2023]
Abstract
The 14q32.2 (DLK1-DIO3) and 15q11-q13 (SNURF-SNRPN) imprinted gene loci harbor the largest known small nucleolar RNA clusters expressed from the respective maternal and paternal alleles. Recent studies have demonstrated significant roles for the 15q11-q13 located SNORD115-SNORD116 C/D box snoRNAs in Prader-Willi syndrome (PWS), a neurodevelopmental disorder. Even though the effect of SNORD116 deletion is apparent in the PWS phenotype, similar effects of a SNORD113-SNORD114 cluster deletion from the 14q32.2 locus in Kagami-Ogata syndrome (KOS14) and upregulation in Temple syndrome (TS14) remain to be explored. Moreover, apart from their probable involvement in neurodevelopmental disorders, snoRNAs from the SNORD113-SNORD114 cluster have been implicated in multiple biological processes, including pluripotency, development, cancers, and RNA modifications. Here we summarize the current understanding of the system to explore the possibility of a link between developmental disorders and C/D box snoRNA expression from the imprinted 14q32.2 locus. This article is categorized under: RNA in Disease and Development > RNA in Disease RNA in Disease and Development > RNA in Development RNA Processing > Processing of Small RNAs.
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Affiliation(s)
- Kishor Gawade
- Laboratory of RNA Processing, Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznan, Poznan, Poland
- Center for Advanced Technology, Adam Mickiewicz University in Poznan, Poznan, Poland
| | - Katarzyna D Raczynska
- Laboratory of RNA Processing, Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznan, Poznan, Poland
- Center for Advanced Technology, Adam Mickiewicz University in Poznan, Poznan, Poland
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3
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Baghdadi H, Heidari R, Zavvar M, Ahmadi N, Shakouri Khomartash M, Vahidi M, Mohammadimehr M, Bashash D, Ghorbani M. Long Non-Coding RNA Signatures in Lymphopoiesis and Lymphoid Malignancies. Noncoding RNA 2023; 9:44. [PMID: 37624036 PMCID: PMC10458434 DOI: 10.3390/ncrna9040044] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/09/2023] [Accepted: 07/27/2023] [Indexed: 08/26/2023] Open
Abstract
Lymphoid cells play a critical role in the immune system, which includes three subgroups of T, B, and NK cells. Recognition of the complexity of the human genetics transcriptome in lymphopoiesis has revolutionized our understanding of the regulatory potential of RNA in normal lymphopoiesis and lymphoid malignancies. Long non-coding RNAs (lncRNAs) are a class of RNA molecules greater than 200 nucleotides in length. LncRNAs have recently attracted much attention due to their critical roles in various biological processes, including gene regulation, chromatin organization, and cell cycle control. LncRNAs can also be used for cell differentiation and cell fate, as their expression patterns are often specific to particular cell types or developmental stages. Additionally, lncRNAs have been implicated in lymphoid differentiation, such as regulating T-cell and B-cell development, and their expression has been linked to immune-associated diseases such as leukemia and lymphoma. In addition, lncRNAs have been investigated as potential biomarkers for diagnosis, prognosis, and therapeutic response to disease management. In this review, we provide an overview of the current knowledge about the regulatory role of lncRNAs in physiopathology processes during normal lymphopoiesis and lymphoid leukemia.
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Affiliation(s)
- Hamed Baghdadi
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, AJA University of Medical Sciences, Tehran 1411718541, Iran; (H.B.); (M.V.); (M.M.)
| | - Reza Heidari
- Research Center for Cancer Screening and Epidemiology, AJA University of Medical Sciences, Tehran 1411718541, Iran;
- Medical Biotechnology Research Center, AJA University of Medical Sciences, Tehran 1411718541, Iran;
| | - Mahdi Zavvar
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran 443614177, Iran;
| | - Nazanin Ahmadi
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran 1985717443, Iran;
| | | | - Mahmoud Vahidi
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, AJA University of Medical Sciences, Tehran 1411718541, Iran; (H.B.); (M.V.); (M.M.)
- Medical Biotechnology Research Center, AJA University of Medical Sciences, Tehran 1411718541, Iran;
| | - Mojgan Mohammadimehr
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, AJA University of Medical Sciences, Tehran 1411718541, Iran; (H.B.); (M.V.); (M.M.)
- Medical Biotechnology Research Center, AJA University of Medical Sciences, Tehran 1411718541, Iran;
| | - Davood Bashash
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran 1985717443, Iran;
| | - Mahdi Ghorbani
- Department of Medical Laboratory Sciences, School of Allied Medical Sciences, AJA University of Medical Sciences, Tehran 1411718541, Iran; (H.B.); (M.V.); (M.M.)
- Medical Biotechnology Research Center, AJA University of Medical Sciences, Tehran 1411718541, Iran;
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Zhai J, Kongsberg WH, Pan Y, Hao C, Wang X, Sun J. Caloric restriction induced epigenetic effects on aging. Front Cell Dev Biol 2023; 10:1079920. [PMID: 36712965 PMCID: PMC9880295 DOI: 10.3389/fcell.2022.1079920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/31/2022] [Indexed: 01/15/2023] Open
Abstract
Aging is the subject of many studies, facilitating the discovery of many interventions. Epigenetic influences numerous life processes by regulating gene expression and also plays a crucial role in aging regulation. Increasing data suggests that dietary changes can alter epigenetic marks associated with aging. Caloric restriction (CR)is considered an intervention to regulate aging and prolong life span. At present, CR has made some progress by regulating signaling pathways associated with aging as well as the mechanism of action of intercellular signaling molecules against aging. In this review, we will focus on autophagy and epigenetic modifications to elaborate the molecular mechanisms by which CR delays aging by triggering autophagy, epigenetic modifications, and the interaction between the two in caloric restriction. In order to provide new ideas for the study of the mechanism of aging and delaying aging.
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Affiliation(s)
| | | | | | | | | | - Jie Sun
- *Correspondence: Xiaojing Wang, ; Jie Sun,
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5
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Zhang H, Liu G, Mao X, Yang L, Wang B, Yuan X. LncRNA MEG3 induces endothelial differentiation of mouse derived adipose-derived stem cells by targeting MiR-145-5p/KLF4. Mol Biol Rep 2022; 49:8495-8505. [PMID: 35802277 DOI: 10.1007/s11033-022-07671-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 06/01/2022] [Indexed: 11/26/2022]
Abstract
BACKGROUND The present study aimed to investigate the mechanisms through which long non-coding RNA (lncRNA) maternally expressed 3 (MEG3) affected the endothelial differentiation of mouse derived adipose-derived stem cells (ADSCs). MATERIALS AND METHODS ADSCs were isolated and identified by specific surface marker detection. The effects of lncRNA MEG3 on endothelial differentiation of ADSCs were also detected via quantitative PCR, western blotting, immunofluorescence and Matrigel angiogenesis assays. In addition, using target gene prediction tools and luciferase reporter assays, the downstream target gene was demonstrated. RESULTS LncRNA MEG3 targeted and reduced the expression levels of microRNA-145-5p (miR-145-5p), which upregulated the expression levels of Krüppel like factor 4 (KLF4), promoting endothelial differentiation of ADSCs. CONCLUSION LncRNA MEG3 induced endothelial differentiation of ADSCs by targeting miR-145-5p/KLF4, which may provide novel insights to illustrate the mechanism of endothelial differentiation of ADSCs.
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Affiliation(s)
- Hailong Zhang
- Department of Dermatology, First Affiliated Hospital of Heilongjiang University of Traditional Chinese Medicine, Harbin, 150006, Heilongjiang, People's Republic of China
| | - Gang Liu
- Department of Medicine, Second Affiliated Hospital of Heilongjiang University of Traditional Chinese Medicine, Harbin, 150006, Heilongjiang, People's Republic of China
| | - Xu Mao
- Department of Health Center, Heilongjiang University of Traditional Chinese Medicine, Harbin, 150040, Heilongjiang, People's Republic of China
| | - Lei Yang
- Department of Medicine, Heilongjiang Academy of Traditional Chinese Medicine, No. 33 of West Dazhi Street, Harbin, 150001, Heilongjiang, People's Republic of China
| | - Bingyu Wang
- Department of Medicine, Heilongjiang Academy of Traditional Chinese Medicine, No. 33 of West Dazhi Street, Harbin, 150001, Heilongjiang, People's Republic of China.
| | - Xingxing Yuan
- Department of Medicine, Heilongjiang Academy of Traditional Chinese Medicine, No. 33 of West Dazhi Street, Harbin, 150001, Heilongjiang, People's Republic of China.
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Suo M, Rommelfanger MK, Chen Y, Amro EM, Han B, Chen Z, Szafranski K, Chakkarappan SR, Boehm BO, MacLean AL, Rudolph KL. Age-dependent effects of Igf2bp2 on gene regulation, function, and aging of hematopoietic stem cells in mice. Blood 2022; 139:2653-2665. [PMID: 35231105 PMCID: PMC11022928 DOI: 10.1182/blood.2021012197] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 02/10/2022] [Indexed: 11/20/2022] Open
Abstract
Increasing evidence links metabolism, protein synthesis, and growth signaling to impairments in the function of hematopoietic stem and progenitor cells (HSPCs) during aging. The Lin28b/Hmga2 pathway controls tissue development, and the postnatal downregulation of this pathway limits the self-renewal of adult vs fetal hematopoietic stem cells (HSCs). Igf2bp2 is an RNA binding protein downstream of Lin28b/Hmga2, which regulates messenger RNA stability and translation. The role of Igf2bp2 in HSC aging is unknown. In this study, an analysis of wild-type and Igf2bp2 knockout mice showed that Igf2bp2 regulates oxidative metabolism in HSPCs and the expression of metabolism, protein synthesis, and stemness-related genes in HSCs of young mice. Interestingly, Igf2bp2 expression and function strongly declined in aging HSCs. In young mice, Igf2bp2 deletion mimicked aging-related changes in HSCs, including changes in Igf2bp2 target gene expression and impairment of colony formation and repopulation capacity. In aged mice, Igf2bp2 gene status had no effect on these parameters in HSCs. Unexpectedly, Igf2bp2-deficient mice exhibited an amelioration of the aging-associated increase in HSCs and myeloid-skewed differentiation. The results suggest that Igf2bp2 controls mitochondrial metabolism, protein synthesis, growth, and stemness of young HSCs, which is necessary for full HSC function during young adult age. However, Igf2bp2 gene function is lost during aging, and it appears to contribute to HSC aging in 2 ways: the aging-related loss of Igf2bp2 gene function impairs the growth and repopulation capacity of aging HSCs, and the activity of Igf2bp2 at a young age contributes to aging-associated HSC expansion and myeloid skewing.
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Affiliation(s)
- Miaomiao Suo
- Leibniz Institute on Aging, Fritz Lipmann Institute (FLI), Jena, Germany
| | - Megan K. Rommelfanger
- Department of Quantitative and Computational Biology, University of Southern California, Los Angeles, CA
| | - Yulin Chen
- Leibniz Institute on Aging, Fritz Lipmann Institute (FLI), Jena, Germany
| | - Elias Moris Amro
- Leibniz Institute on Aging, Fritz Lipmann Institute (FLI), Jena, Germany
| | - Bing Han
- Leibniz Institute on Aging, Fritz Lipmann Institute (FLI), Jena, Germany
| | - Zhiyang Chen
- Leibniz Institute on Aging, Fritz Lipmann Institute (FLI), Jena, Germany
| | - Karol Szafranski
- Leibniz Institute on Aging, Fritz Lipmann Institute (FLI), Jena, Germany
| | | | - Bernhard O. Boehm
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Singapore
| | - Adam L. MacLean
- Department of Quantitative and Computational Biology, University of Southern California, Los Angeles, CA
| | - K. Lenhard Rudolph
- Leibniz Institute on Aging, Fritz Lipmann Institute (FLI), Jena, Germany
- Medical Faculty, Jena University Hospital, Friedrich Schiller University, Jena, Germany
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7
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Zhang F, Wang Z, Sun B, Huang Y, Chen C, Hu J, Li L, Xia P, Ye Z. Propofol rescued astrocytes from LPS-induced inflammatory response via blocking LncRNA-MEG3/NF-κB axis. Curr Neurovasc Res 2022; 19:5-18. [PMID: 35297349 DOI: 10.2174/1567202619666220316112509] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 12/27/2021] [Accepted: 12/31/2021] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Evidences had demonstrated that propofol attenuated neuro-inflammation following brain ischemia. Moreover, LncRNA-MEG3 was identified as an independent prognostic marker for ischemic stroke patients, and was found to be correlated with cerebral ischemia in animal models. Therefore, the current study explored the role of propofol on lipopolysaccharide (LPS)-mediated inflammation in cultured astrocytes, along with the molecular mechanism involved in LncRNA-MEG3/NF-κB axis. METHODS The primary cultured astrocytes isolated from rats were used to establish an inflammatory model, which were treated with LPS. Propofol was administrated to the primary cultured astrocytes during LPS treatment. The effect of propofol on pro-inflammatory cytokines and the LncRNA-MEG3/NF-κB pathway were detected by ELISA, qRT-PCR and Western Blot assay, respectively. Then, dual-luciferase assay, chromatin immunoprecipitation and RNA immunoprecipitation were used to determine the interaction between LncRNA-MEG3 and NF-κB. RESULTS Our study found that propofol significantly reduced LncRNA-MEG3 expression, which was elevated in LPS-stimulated astrocytes. Moreover, both propofol and LncRNA-MEG3 knockdown remarkably alleviated LPS-induced cytotoxicity by suppressing expressions and release of pro-inflammatory cytokines. Loss of LncRNA-MEG3 notably suppressed the NF-κB activity and its phosphorylated activation. Additionally, it was also observed that LncRNA-MEG3 could bind nuclear p65/p50, and promote the binding of NF-κB to IL-6 and TNF-α promoters in the nucleus, subsequently stimulating the production of inflammatory cytokines in LPS-treated astrocytes. Furthermore, a specific inhibitor of NF-κB, PDTC rescued astrocytes from LPS exposure without affecting LncRNA-MEG3 expression. CONCLUSION These findings demonstrated that LncRNA-MEG3 acted as a positive regulator of NF-κB, mediated the neuroprotection of propofol in LPS-triggered astrocytes injury.
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Affiliation(s)
- Fan Zhang
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, 410008, Hunan Province, China
| | - Zhihua Wang
- Department of Anesthesiology, Hainan General Hospital, Haikou, Hainan Province, China
| | - Bei Sun
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, 410008, Hunan Province, China
| | - Yan Huang
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, 410008, Hunan Province, China
| | - Cheng Chen
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, 410008, Hunan Province, China
| | - Jie Hu
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, 410008, Hunan Province, China
| | - Longyan Li
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, 410008, Hunan Province, China
| | - Pingping Xia
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, 410008, Hunan Province, China
| | - Zhi Ye
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, 410008, Hunan Province, China
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Lin HP, Rea M, Wang Z, Yang C. Down-regulation of lncRNA MEG3 promotes chronic low dose cadmium exposure-induced cell transformation and cancer stem cell-like property. Toxicol Appl Pharmacol 2021; 430:115724. [PMID: 34520792 DOI: 10.1016/j.taap.2021.115724] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 12/12/2022]
Abstract
Cadmium (Cd) is a toxic heavy metal and one of carcinogens that cause lung cancer. However, the exact mechanism of Cd carcinogenesis remains unclear. To investigate the mechanism of Cd carcinogenesis, we exposed human bronchial epithelial cells (BEAS-2B) to a low dose of Cd (2.5 μM, CdCl2) for 9 months, which caused cell malignant transformation and generated cancer stem cell (CSC)-like cells. The goal of this study is to investigate the underlying mechanism. The long non-coding RNA (lncRNA) microarray analysis showed that the expression level of a tumor suppressive lncRNA maternally expressed 3 (MEG3) is significantly down-regulated in Cd-transformed cells, which is confirmed by further q-PCR analysis. Mechanistically, it was found that chronic Cd exposure up-regulates the levels of DNA methyltransferases (DNMTs), which increases the methylation of the differentially methylated region (DMR) 1.5 kb upstream of MEG3 transcription start site to reduce MEG3 expression. Functional studies showed that stably overexpressing MEG3 in Cd-transformed cells significantly reduces their transformed phenotypes. Moreover, stably overexpressing MEG3 in parental non-transformed human bronchial epithelial cells significantly impaired the capability of chronic Cd exposure to induce cell transformation and CSC-like property. Further mechanistic studies revealed that the cell cycle inhibitor p21 level is reduced and retinoblastoma protein (Rb) phosphorylation is increased in Cd-transformed cells to promote cell cycle progression. In addition, Cd-transformed cells also expressed higher levels of Bcl-xL and displayed apoptosis resistance. In contrast, stably overexpressing MEG3 increased p21 levels and reduced Rb phosphorylation and Bcl-xL levels in Cd-exposed cells and reduced their cell cycle progression and apoptosis resistance. Together, these findings suggest that MEG3 down-regulation may play important roles in Cd-induced cell transformation and CSC-like property by promoting cell cycle progression and apoptosis resistance.
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Affiliation(s)
- Hsuan-Pei Lin
- Department of Toxicology and Cancer Biology, University of Kentucky, Lexington, KY 40506, United States of America
| | - Matthew Rea
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, United States of America
| | - Zhishan Wang
- Division of Cancer Biology, Department of Medicine, MetroHealth Medical Center, Case Western University School of Medicine, Cleveland, OH 44109, United States of America
| | - Chengfeng Yang
- Division of Cancer Biology, Department of Medicine, MetroHealth Medical Center, Case Western University School of Medicine, Cleveland, OH 44109, United States of America.
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Regulatory association of long noncoding RNAs and chromatin accessibility facilitates erythroid differentiation. Blood Adv 2021; 5:5396-5409. [PMID: 34644394 PMCID: PMC9153002 DOI: 10.1182/bloodadvances.2021005167] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 09/13/2021] [Indexed: 01/17/2023] Open
Abstract
Erythroid differentiation is a dynamic process regulated by multiple factors, while the interaction between long non-coding RNAs and chromatin accessibility and its influence on erythroid differentiation remains unclear. To elucidate this interaction, we employed hematopoietic stem cells, multipotent progenitor cells, common myeloid progenitor cells, megakaryocyte-erythroid progenitor cells, and erythroblasts from human cord blood as an erythroid differentiation model to explore the coordinated regulatory functions of lncRNAs and chromatin accessibility by integrating RNA-Seq and ATAC-Seq data. We revealed that the integrated network of chromatin accessibility and lncRNAs exhibits stage-specific changes throughout the erythroid differentiation process, and that the changes at the EB stage of maturation are dramatic. We identified a subset of stage-specific lncRNAs and transcription factors (TFs) that associate with chromatin accessibility during erythroid differentiation, in which lncRNAs are key regulators of terminal erythroid differentiation via a lncRNA-TF-gene network. LncRNA PCED1B-AS1 was revealed to regulate terminal erythroid differentiation by coordinating GATA1 dynamically binding to the chromatin and interacting with cytoskeleton network during erythroid differentiation. DANCR, another lncRNA that is highly expressed at the MEP stage, was verified to promote erythroid differentiation by compromising megakaryocyte differentiation and coordinating with chromatin accessibility and TFs, such as RUNX1. Overall, our results identified the associated network of lncRNAs and chromatin accessibility in erythropoiesis and provide novel insights into erythroid differentiation and abundant resources for further study.
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10
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Chen C, Huang Y, Xia P, Zhang F, Li L, Wang E, Guo Q, Ye Z. Long noncoding RNA Meg3 mediates ferroptosis induced by oxygen and glucose deprivation combined with hyperglycemia in rat brain microvascular endothelial cells, through modulating the p53/GPX4 axis. Eur J Histochem 2021; 65:3224. [PMID: 34587716 PMCID: PMC8490947 DOI: 10.4081/ejh.2021.3224] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 08/12/2021] [Indexed: 12/12/2022] Open
Abstract
Individuals with diabetes are exposed to a higher risk of perioperative stroke than non-diabetics mainly due to persistent hyperglycemia. LncRNA Meg3 has been considered as an important mediator in regulating ischemic stroke. However, the functional and regulatory roles of Meg3 in diabetic brain ischemic injury remain unclear. In this study, rat brain microvascular endothelial cells (RBMVECs) were exposed to 6 h of oxygen and glucose deprivation (OGD), and subsequent reperfusion via incubating cells with glucose of various high concentrations for 24 h to imitate in vitro diabetic brain ischemic injury. It was shown that the marker events of ferroptosis and increased Meg3 expression occurred after the injury induced by OGD combined with hyperglycemia. However, all ferroptotic events were reversed with the treatment of Meg3-siRNA. Moreover, in this in vitro model, p53 was also characterized as a downstream target of Meg3. Furthermore, p53 knockdown protected RBMVECs against OGD + hyperglycemic reperfusion-induced ferroptosis, while the overexpression of p53 exerted opposite effects, implying that p53 served as a positive regulator of ferroptosis. Additionally, the overexpression or knockdown of p53 significantly modulated GPX4 expression in RBMVECs exposed to the injury induced by OGD combined with hyperglycemic treatment. Furthermore, GPX4 expression was suppressed again after the reintroduction of p53 into cells silenced by Meg3. Finally, chromatin immunoprecipitation assay uncovered that p53 was bound to GPX4 promoter. Altogether, these data revealed that, by modulating GPX4 transcription and expression, the Meg3-p53 signaling pathway mediated the ferroptosis of RBMVECs upon injury induced by OGD combined with hyperglycemic reperfusion.
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Affiliation(s)
- Cheng Chen
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, Hunan Province.
| | - Yan Huang
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha, Hunan Province.
| | - Pingping Xia
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province.
| | - Fan Zhang
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province.
| | - Longyan Li
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province.
| | - E Wang
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province.
| | - Qulian Guo
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province.
| | - Zhi Ye
- Department of Anesthesiology, Xiangya Hospital of Central South University, Changsha; National Clinical Research Center for Geriatric Disorders, Central South University, Changsha, Hunan Province.
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11
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Wang W, Gu MF, Wang ZF, Shen XM, Zhang J, Yang L. Let-7a-5p regulated by lncRNA-MEG3 promotes functional differentiation to Schwann cells from adipose derived stem cells via directly inhibiting RBPJ-mediating Notch pathway. Apoptosis 2021; 26:548-560. [PMID: 34409556 DOI: 10.1007/s10495-021-01685-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/03/2021] [Indexed: 12/20/2022]
Abstract
Schwann cells (SCs) have important roles in supporting and repairing peripheral neurons, and thus have great potential for nerve injury treatment. Adipose tissue-derived stem cells (ADSCs) can be reliably induced to differentiate into SCs. However, the underlying molecular mechanisms are unclear. We explored the roles of MEG3/let-7a-5p/RBPJ axis in the differentiation into SCs from ADSCs. Primary ADSCs were induced to differentiate into SCs by appropriate reagents. ELISA, immunostaining, Western blotting, and qRT-PCR were employed to examine levels of SC-markers such as S100, GFAP, SOX10, p75NTR, GAP43, MPZ, β-NGF, BDNF, and NCAM and let-7 family, MEG3, RBPJ, and Notch signaling related proteins. Dual luciferase assay and RNA immunoprecipitation were performed to validate interactions of let-7a-5p/RBPJ mRNA and MEG3/let-7a-5p. Cultured ADSCs could be induced to differentiate into functional SCs. Let-7a-5p and let-7d-5p were elevated during the differentiation while MEG3 and RBPJ/Notch-signaling were suppressed. Let-7a-5p mimics promoted ADSC differentiation into SCs and up-regulated the levels of SC-related markers including S100, GFAP, SOX10, p75NTR, GAP43, MPZ, β-NGF, and NCAM, while RBPJ or MEG3 overexpression retarded the differentiation and reduced those levels. Let-7a-5p directly targeted RBPJ and MEG3 disinhibited Notch-RBPJ signaling via sponging let-7a-5p. RBPJ overexpression reversed the acceleration of let-7a-5p mimics on SC differentiation while let-7a-5p mimics blocked MEG3-mediated suppression on SC differentiation. Let-7a-5p sponged by MEG3 promotes differentiation of ADSCs into SCs via suppressing Notch signaling by targeting RBPJ. These findings shed light on mechanisms underlying the differentiation of ADSCs to SCs and provide avenues to accelerate the process.
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Affiliation(s)
- Wei Wang
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Mei-Feng Gu
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Zhi-Fei Wang
- Department of Neurosurgery, The Third Xiangya Hospital of Central South University, No. 138, Tongzipo Road, Changsha, 410078, Hunan, China
| | - Xiang-Min Shen
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Jie Zhang
- Department of Neurology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Liang Yang
- Department of Neurosurgery, The Third Xiangya Hospital of Central South University, No. 138, Tongzipo Road, Changsha, 410078, Hunan, China.
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Hsieh PF, Yu CC, Chu PM, Hsieh PL. Long Non-Coding RNA MEG3 in Cellular Stemness. Int J Mol Sci 2021; 22:ijms22105348. [PMID: 34069546 PMCID: PMC8161278 DOI: 10.3390/ijms22105348] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/15/2021] [Accepted: 05/17/2021] [Indexed: 12/17/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) regulate a diverse array of cellular processes at the transcriptional, post-transcriptional, translational, and post-translational levels. Accumulating evidence suggests that lncRNA MEG3 exerts a large repertoire of regulatory functions in cellular stemness. This review focuses on the molecular mechanisms by which lncRNA MEG3 functions as a signal, scaffold, guide, and decoy for multi-lineage differentiation and even cancer progression. The role of MEG3 in various types of stem cells and cancer stem cells is discussed. Here, we provide an overview of the functional versatility of lncRNA MEG3 in modulating pluripotency, differentiation, and cancer stemness.
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Affiliation(s)
- Pei-Fang Hsieh
- Department of Urology, E-Da Hospital, Kaohsiung 82445, Taiwan;
- Department of Medical Laboratory Science and Biotechnology, Chung-Hwa University of Medical Technology, Tainan 71703, Taiwan
| | - Cheng-Chia Yu
- Institute of Oral Sciences, Chung Shan Medical University, Taichung 40201, Taiwan;
- Department of Dentistry, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
- School of Dentistry, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Pei-Ming Chu
- Department of Anatomy, School of Medicine, China Medical University, Taichung 404333, Taiwan;
| | - Pei-Ling Hsieh
- Department of Anatomy, School of Medicine, China Medical University, Taichung 404333, Taiwan;
- Correspondence:
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Abstract
Hematopoietic stem cells (HSCs) are used in the clinic to provide life-saving therapies to patients with a variety of hematological malignancies and disorders. Yet, serious deficiencies in our understanding of how HSCs develop and self-renew continue to limit our ability to make this therapy safer and more broadly available to those who have no available donor. Finding ways to expand HSCs and develop alternate sources of HSCs is an urgent priority. In the embryo, a critical transition in development of the blood system requires that newly emergent HSCs from the aorta-gonad-mesonephros (AGM) region migrate to the fetal liver where they aggressively self-renew and expand to numbers sufficient to sustain the adult long term. This process of homing to the fetal liver is orchestrated by intrinsic regulators such as epigenetic modifications to the genome, expression of transcription factors, and adhesion molecule presentation, as well as sensing of extrinsic factors like chemokines, cytokines, and other molecules. Due to technical limitations in manipulating the fetal tissue microenvironment, mechanisms mediating the homing and expansion process remain incompletely understood. Importantly, HSC development is strictly dependent upon forces created by the flow of blood, and current experimental methods make the study of biophysical cues especially challenging. In the protocol presented herein, we address these limitations by designing a biomimetic ex vivo microfluidic model of the fetal liver that enables monitoring of HSC homing to and interaction with fetal liver niches under flow and matrix elasticity conditions typical during embryonic development. This model can be easily customized for the study of key microenvironmental factors and biophysical cues that support HSC homing and expansion.
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