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Wu B, Zhang Y, Yu Y, Zhong C, Lang Q, Liang Z, Lv C, Xu F, Tian Y. Long Noncoding RNA H19: A Novel Therapeutic Target Emerging in Oncology Via Regulating Oncogenic Signaling Pathways. Front Cell Dev Biol 2021; 9:796740. [PMID: 34977037 PMCID: PMC8716783 DOI: 10.3389/fcell.2021.796740] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 11/24/2021] [Indexed: 12/24/2022] Open
Abstract
Long noncoding RNA H19 (H19) is an imprinting gene with only maternal expression that is involved in regulating different processes in various types of cells. Previous studies have shown that abnormal H19 expression is involved in many pathological processes, such as cancer, mainly through sponging miRNAs, interacting with proteins, or regulating epigenetic modifications. Accumulating evidence has shown that several oncogenic signaling pathways lead to carcinogenesis. Recently, the regulatory relationship between H19 and oncogenic signaling pathways in various types of cancer has been of great interest to many researchers. In this review, we discussed the key roles of H19 in cancer development and progression via its regulatory function in several oncogenic signaling pathways, such as PI3K/Akt, canonical Wnt/β-catenin, canonical NF-κB, MAPK, JAK/STAT and apoptosis. These oncogenic signaling pathways regulated by H19 are involved in cell proliferation, proliferation, migration and invasion, angiogenesis, and apoptosis of various cancer cells. This review suggests that H19 may be a novel therapeutic target for cancers treatment by regulating oncogenic signaling pathways.
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Affiliation(s)
- Baokang Wu
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yizhou Zhang
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yang Yu
- Department of Surgery, Jinzhou Medical University, Jinzhou, China
| | - Chongli Zhong
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Qi Lang
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Zhiyun Liang
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Chao Lv
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Feng Xu
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yu Tian
- Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, China
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Abstract
Peg3 (Paternally expressed gene 3) is an imprinted gene encoding a DNA-binding protein that is a well-known transcriptional repressor. Previous studies have shown that the mutant phenotypes of Peg3 are associated with the over-expression of genes involved in lipid metabolism. In the current study, we investigated four potential downstream genes of Peg3, which were identified through ChIP-seq data: Acly, Fasn, Idh1, and Hmgcr. In vivo binding of PEG3 to the promoter region of these key genes involved in lipogenesis was subsequently confirmed through individual ChIP experiments. We observed the opposite response of Acly expression levels against the variable gene dosages of Peg3, involving 0x, 1x, and 2x Peg3. This suggests the transcriptional repressor role of Peg3 in the expression levels of Acly. Another set of analyses showed a sex-biased response in the expression levels of Acly, Fasn, and Idh1 against 0x Peg3 with higher levels in female and lower levels in male mammary glands. These results overall highlight that Peg3 may be involved in regulating the expression levels of several key genes in adipogenesis.
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Affiliation(s)
- Subash Ghimire
- Department of Biological Science, Louisiana State University, Baton Rouge, Louisiana, United States of America
| | - Joomyeong Kim
- Department of Biological Science, Louisiana State University, Baton Rouge, Louisiana, United States of America
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Yang Z, Zhang T, Han S, Kusumanchi P, Huda N, Jiang Y, Liangpunsakul S. Long noncoding RNA H19 - a new player in the pathogenesis of liver diseases. Transl Res 2021; 230:139-150. [PMID: 33227504 PMCID: PMC9330166 DOI: 10.1016/j.trsl.2020.11.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 11/05/2020] [Accepted: 11/17/2020] [Indexed: 12/12/2022]
Abstract
The liver is a vital organ that controls glucose and lipid metabolism, hormone regulation, and bile secretion. Liver injury can occur from various insults such as viruses, metabolic diseases, and alcohol, which lead to acute and chronic liver diseases. Recent studies have demonstrated the implications of long noncoding RNAs (lncRNAs) in the pathogenesis of liver diseases. These newly discovered lncRNAs have various functions attributing to many cellular biological processes via distinct and diverse mechanisms. LncRNA H19, one of the first lncRNAs being identified, is highly expressed in fetal liver but not in adult normal liver. Its expression, however, is increased in liver diseases with various etiologies. In this review, we focused on the roles of H19 in the pathogenesis of liver diseases. This comprehensive review is aimed to provide useful perspectives and translational applications of H19 as a potential therapeutic target of liver diseases.
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Affiliation(s)
- Zhihong Yang
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
| | - Ting Zhang
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Sen Han
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Praveen Kusumanchi
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Nazmul Huda
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Yanchao Jiang
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana
| | - Suthat Liangpunsakul
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana; Roudebush Veterans Administration Medical Center, Indianapolis, Indiana; Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana
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Huang S, Luo S, Gong C, Liang L, Xiao Y, Li M, He J. MTTL3 upregulates microRNA-1246 to promote occurrence and progression of NSCLC via targeting paternally expressed gene 3. MOLECULAR THERAPY. NUCLEIC ACIDS 2021; 24:542-553. [PMID: 33898106 PMCID: PMC8059086 DOI: 10.1016/j.omtn.2021.02.020] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Accepted: 02/19/2021] [Indexed: 12/11/2022]
Abstract
Non-small cell lung cancer (NSCLC) is one of the major causes of morbidity and mortality worldwide. We aimed to investigate the role of N6-methyladenosine (m6A) methyltransferase-like 3 (METTL3) regulating microRNA-1246 (miR-1246) in the progression of NSCLC by targeting paternally expressed gene 3 (PEG3). METTL3, miR-1246, and PEG3 expression in tissues was assessed, and the predictive role of METTL3 in prognosis of patients with NSCLC was detected. NSCLC cells were relatively treated with altered expression of METTL3, miR-1246, or PEG3 to measure their roles in the proliferation, migration, invasion, apoptosis, and in vivo growth of the NSCLC cells. The RNA m6A level was determined, and the targeting relationship between miR-1246 and PEG3 was confirmed. Our results revealed that METTL3 and miR-1246 were upregulated, whereas PEG3 was downregulated in NSCLC tissues. METTL3 knockdown or PEG3 overexpression in NSCLC cells suppressed malignant behaviors of NSCLC cells. METTL3 affected the m6A modification of miR-1246, thus upregulating miR-1246 and miR-1246-targeted PEG3. The elevation of PEG3 reversed the effects of miR-1246 upregulation on NSCLC cells. This study revealed that m6A methyltransferase METTL3 affects the m6A modification of miR-1246, thus upregulating miR-1246 to promote NSCLC progression by inhibiting PEG3.
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Affiliation(s)
- Shaohong Huang
- Department of Thoracocardiac Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong, China
| | - Shaoning Luo
- Department of Emergency Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong, China
| | - Chulian Gong
- Department of Anesthesiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong, China
| | - Limin Liang
- Department of Thoracocardiac Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong, China
| | - Yi Xiao
- Department of Thoracocardiac Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong, China
| | - Mingan Li
- Department of Interventional Radiology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong, China
| | - Jinyuan He
- Department of Thoracocardiac Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, Guangdong, China
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Pace M, Falappa M, Freschi A, Balzani E, Berteotti C, Lo Martire V, Kaveh F, Hovig E, Zoccoli G, Amici R, Cerri M, Urbanucci A, Tucci V. Loss of Snord116 impacts lateral hypothalamus, sleep, and food-related behaviors. JCI Insight 2020; 5:137495. [PMID: 32365348 DOI: 10.1172/jci.insight.137495] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 04/24/2020] [Indexed: 12/14/2022] Open
Abstract
Imprinted genes are highly expressed in the hypothalamus; however, whether specific imprinted genes affect hypothalamic neuromodulators and their functions is unknown. It has been suggested that Prader-Willi syndrome (PWS), a neurodevelopmental disorder caused by lack of paternal expression at chromosome 15q11-q13, is characterized by hypothalamic insufficiency. Here, we investigate the role of the paternally expressed Snord116 gene within the context of sleep and metabolic abnormalities of PWS, and we report a significant role of this imprinted gene in the function and organization of the 2 main neuromodulatory systems of the lateral hypothalamus (LH) - namely, the orexin (OX) and melanin concentrating hormone (MCH) - systems. We observed that the dynamics between neuronal discharge in the LH and the sleep-wake states of mice with paternal deletion of Snord116 (PWScrm+/p-) are compromised. This abnormal state-dependent neuronal activity is paralleled by a significant reduction in OX neurons in the LH of mutant mice. Therefore, we propose that an imbalance between OX- and MCH-expressing neurons in the LH of mutant mice reflects a series of deficits manifested in the PWS, such as dysregulation of rapid eye movement (REM) sleep, food intake, and temperature control.
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Affiliation(s)
- Marta Pace
- Genetics and Epigenetics of Behaviour Laboratory, Istituto Italiano di Tecnologia, via Morego 30, Italy
| | - Matteo Falappa
- Genetics and Epigenetics of Behaviour Laboratory, Istituto Italiano di Tecnologia, via Morego 30, Italy.,Dipartimento di Neuroscienze, Riabilitazione, Oftalmologia, Genetica e Scienze Materno-Infantili (DINOGMI), Università degli Studi di Genova, Genova, Italy
| | - Andrea Freschi
- Genetics and Epigenetics of Behaviour Laboratory, Istituto Italiano di Tecnologia, via Morego 30, Italy
| | - Edoardo Balzani
- Genetics and Epigenetics of Behaviour Laboratory, Istituto Italiano di Tecnologia, via Morego 30, Italy
| | - Chiara Berteotti
- PRISM Lab, Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Viviana Lo Martire
- PRISM Lab, Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Fatemeh Kaveh
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Eivind Hovig
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway.,Centre for Bioinformatics, Department of Informatics, University of Oslo, Oslo, Norway
| | - Giovanna Zoccoli
- PRISM Lab, Department of Biomedical and Neuromotor Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Roberto Amici
- Department of Biomedical and NeuroMotor Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Matteo Cerri
- Department of Biomedical and NeuroMotor Sciences, Alma Mater Studiorum, University of Bologna, Bologna, Italy
| | - Alfonso Urbanucci
- Department of Tumor Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway
| | - Valter Tucci
- Genetics and Epigenetics of Behaviour Laboratory, Istituto Italiano di Tecnologia, via Morego 30, Italy
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Zhou Y, Zhang Y. Inhibition of LncRNAH19 has the effect of anti-tumour and enhancing sensitivity to Gefitinib and Chemotherapy in Non-small-cell lung cancer in vivo. J Cell Mol Med 2020; 24:5811-5816. [PMID: 32281297 PMCID: PMC7214165 DOI: 10.1111/jcmm.15245] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 03/19/2020] [Indexed: 12/21/2022] Open
Abstract
Lung cancer is one of the most common malignant diseases, which ranked first in both men and women malignancies worldwide. The survival rate of non-small-cell lung cancer (NSCLC) has been limited with distant metastasis and shortage of effective chemotherapeutics in recent years. Thus, novel therapeutic strategies for NSCLC are urgently explored. Here, we showed that inhibition of H19 effectively inhibited the progression of NSCLC. Moreover, down-regulation of H19 treatment significantly enhanced the levels of PTEN and PDCD4, while suppressed the expressions of NFIB in NSCLC. Furthermore, down-regulation of H19 combined with Gefitinib treatment significantly increased the levels of PTEN and PDCD4, while decreased the expression levels of NFIB. Moreover, the results showed that Gefitinib treatment significantly reduced the shH19-mediated miR-21 expression levels. Our results showed that down-regulation of H19 combined with Gefitinib administration significantly improved the effect of shH19 treatment alone on the progression of NSCLC, which was involved in the activation of PTEN signalling pathway in NSCLC in vivo. Therefore, these findings might indicate a novel molecular mechanism, which could provide a new potential combination of therapeutic method in NSCLC.
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Affiliation(s)
- Yaodong Zhou
- Department of Thoracic Surgery, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yixin Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital affiliated to Shanghai Jiaotong University, Shanghai, China
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Genome imprinting in stem cells: A mini-review. Gene Expr Patterns 2019; 34:119063. [PMID: 31279979 DOI: 10.1016/j.gep.2019.119063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Revised: 05/21/2019] [Accepted: 06/30/2019] [Indexed: 12/19/2022]
Abstract
Genomic imprinting is an epigenetic process result in silencing of one of the two alleles (maternal or paternal) based on the parent of origin. Dysregulation of imprinted genes results in detectable developmental and differential abnormalities. Epigenetics erasure is required for resetting the cell identity to a ground state during the production of induced pluripotent stem (iPS) cells from somatic cells. There are some contradictory reports regarding the status of the imprinting marks in the genome of iPS cells. Additionally, many studies highlighted the existence of subtle differences in the imprinting loci between different types of iPS cells and embryonic stem (ES) cells. These observations could ultimately undermine the use of patient-derived iPS cells for regenerative medicine.
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Abstract
Mouse Peg3 encodes a DNA-binding protein involved in the milk letdown process. In the current study, we tested whether PEG3 controls the expression of the oxytocin receptor gene. According to the results, PEG3 directly binds to a genomic region within the 3rd exon of Oxtr, which contains a DNA-binding motif for PEG3. In nursing female mice, removal of PEG3 resulted in the increased expression of Oxtr in mammary epithelial cells and also in the hypothalamus. This suggests a repressor role of PEG3 in the expression of Oxtr in these tissues. Overall, this study suggests that Peg3 may function as a direct transcriptional regulator for Oxtr expression that acts to moderate the milk letdown process.
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Bretz CL, Frey WD, Teruyama R, Kim J. Allele and dosage specificity of the Peg3 imprinted domain. PLoS One 2018; 13:e0197069. [PMID: 29734399 PMCID: PMC5937776 DOI: 10.1371/journal.pone.0197069] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 04/25/2018] [Indexed: 11/19/2022] Open
Abstract
The biological impetus for gene dosage and allele specificity of mammalian imprinted genes is not fully understood. To address this, we generated and analyzed four sets of mice from a single breeding scheme with varying allelic expression and gene dosage of the Peg3 domain. The mutants with abrogation of the two paternally expressed genes, Peg3 and Usp29, showed a significant decrease in growth rates for both males and females, while the mutants with biallelic expression of Peg3 and Usp29 resulted in an increased growth rate of female mice only. The mutant cohort with biallelic expression of Peg3 and Usp29 tended to have greater numbers of pups compared to the other genotypes. The mutants with switched active alleles displayed overall similar phenotypes to the wild type, but did show some differences in gene expression, suggesting potential non-redundant roles contributed by the maternal and paternal alleles. Overall, this study demonstrates a novel in vivo approach to investigate the allele and dosage specificity of mammalian imprinted domains.
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Affiliation(s)
- Corey L. Bretz
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, United States of America
| | - Wesley D. Frey
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, United States of America
| | - Ryoichi Teruyama
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, United States of America
| | - Joomyeong Kim
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, United States of America
- * E-mail:
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Desterke C, Slim R, candelier JJ. A bioinformatics transcriptome meta-analysis highlights the importance of trophoblast differentiation in the pathology of hydatidiform moles. Placenta 2018; 65:29-36. [DOI: 10.1016/j.placenta.2018.04.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 03/26/2018] [Accepted: 04/06/2018] [Indexed: 11/25/2022]
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Luo J, Zhang Y, Guo Y, Tang H, Wei H, Liu S, Wang X, Wang L, Zhou P. TRIM28 regulates Igf2-H19 and Dlk1-Gtl2 imprinting by distinct mechanisms during sheep fibroblast proliferation. Gene 2017; 637:152-160. [PMID: 28947302 DOI: 10.1016/j.gene.2017.09.048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 09/19/2017] [Accepted: 09/21/2017] [Indexed: 01/14/2023]
Abstract
DNA methylation is an essential epigenetic modification involved in regulating gene expression and maintaining epigenetic information across generations. However, how these marks are recognized and interpreted to activate or repress imprinted genes is not fully understood. Preliminary evidence describes the transcriptional repressor TRIM28 as a key regulator of imprinted gene expression during and after early genome-wide reprogramming. Aberrant expression of imprinted genes maybe one possible cause of incomplete epigenetic reprogramming and low efficiency in somatic cell nuclear transfer. Here, we perform a series of experiments to determine whether knockdown of Trim28 alters imprinted gene expression and DMR methylation in sheep embryonic fibroblast (SEF) cells. siRNA-mediated Trim28 silencing in SEF cells resulted in significantly decreased expression of Gtl2 to 30% and increased expression of Dlk1 (~1.7-fold). Moreover, knocking down Trim28 induced DNA methylation at the IG-DMR and the Gtl2 promoter was disrupted. Here, we uncover an important role for Trim28 in the maintenance of DNA methylation at IG-DMR during replication-dependent dilution of methylated cytosine during cellular proliferation. Unlike Dlk1-Gtl2 however, knocking down Trim28 does not affect DMR methylation in the Igf2-H19 gene cluster, yet results in increased expression of Igf2 and H19. Interestingly, Peg3 expression decreased by 60% in Trim28 knockdown cells. PEG3 as a transcriptional repressor to the H19-ICR that interacts with the co-repressor protein TRIM28 through KRAB-A. Trim28 therefore appears to control the Igf2-H19 imprinted cluster indirectly via PEG3, which is distinct from its classical role in preserving DNA methylation during DNA replication. Our results therefore indicate that Trim28 regulates imprinted gene expression through at least two distinct mechanisms during cells proliferation.
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Affiliation(s)
- Jian Luo
- Key Laboratory for Sheep Improvement and Healthy Production, Xinjiang Academy of Agricultural and Reclamation Science, 221 Wuyi Road, Shihezi, Xinjiang 832000, China
| | - Yiyuan Zhang
- Key Laboratory for Sheep Improvement and Healthy Production, Xinjiang Academy of Agricultural and Reclamation Science, 221 Wuyi Road, Shihezi, Xinjiang 832000, China
| | - Yanhua Guo
- Key Laboratory for Sheep Improvement and Healthy Production, Xinjiang Academy of Agricultural and Reclamation Science, 221 Wuyi Road, Shihezi, Xinjiang 832000, China
| | - Hong Tang
- Key Laboratory for Sheep Improvement and Healthy Production, Xinjiang Academy of Agricultural and Reclamation Science, 221 Wuyi Road, Shihezi, Xinjiang 832000, China
| | - Haixia Wei
- Key Laboratory for Sheep Improvement and Healthy Production, Xinjiang Academy of Agricultural and Reclamation Science, 221 Wuyi Road, Shihezi, Xinjiang 832000, China; College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Shouren Liu
- Key Laboratory for Sheep Improvement and Healthy Production, Xinjiang Academy of Agricultural and Reclamation Science, 221 Wuyi Road, Shihezi, Xinjiang 832000, China; College of Animal Science and Technology, Shihezi University, Shihezi, Xinjiang 832003, China
| | - Xinhua Wang
- Key Laboratory for Sheep Improvement and Healthy Production, Xinjiang Academy of Agricultural and Reclamation Science, 221 Wuyi Road, Shihezi, Xinjiang 832000, China
| | - Limin Wang
- Key Laboratory for Sheep Improvement and Healthy Production, Xinjiang Academy of Agricultural and Reclamation Science, 221 Wuyi Road, Shihezi, Xinjiang 832000, China; Department of Animal Science, College of Agriculture, Health and Natural Resources, University of Connecticut, 1390 Storrs Road, Storrs, CT 06269, USA
| | - Ping Zhou
- Key Laboratory for Sheep Improvement and Healthy Production, Xinjiang Academy of Agricultural and Reclamation Science, 221 Wuyi Road, Shihezi, Xinjiang 832000, China.
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Abstract
Peg3 (paternally expressed gene 3) encodes a DNA-binding protein that functions as a transcriptional repressor. Recent studies revealed that PEG3 binds to Msl1 (male-specific lethal 1) and Msl3, the two main components of the MSL complex. In the current study, we investigated potential roles of Peg3 in controlling its downstream genes through H4K16ac, the histone modification by the MSL complex. According to the results, complete removal of PEG3 resulted in up-regulation of Msl1 and Msl3, and subsequently an increase in the global levels of H4K16ac, confirming PEG3 as a transcriptional repressor for MSL during mammalian development. Genome-wide analyses further revealed that about 10% of the entire gene catalogue was affected in the MEF cells lacking PEG3, displaying the increased levels of H4K16ac in their promoter regions. The expression levels of a small subset of the affected genes were up-regulated in the MEF cells lacking PEG3. Interestingly, three Hox clusters also exhibited changes in the levels of H4K16ac, suggesting potential roles of PEG3 and MSL in the regulation of Hox clusters. Overall, the current study reports that Peg3 may control its downstream genes through mammalian MSL.
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Affiliation(s)
- An Ye
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, United States of America
| | - Hana Kim
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, United States of America
| | - Joomyeong Kim
- Department of Biological Sciences, Louisiana State University, Baton Rouge, LA, United States of America
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