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Yin X, Yan Y, Li J, Cao Z, Shen S, Chang Q, Zhao Y, Wang X, Wang P. Nuclear receptors for epidermal lipid barrier: Advances in mechanisms and applications. Exp Dermatol 2024; 33:e15107. [PMID: 38840418 DOI: 10.1111/exd.15107] [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: 10/18/2023] [Revised: 04/20/2024] [Accepted: 05/19/2024] [Indexed: 06/07/2024]
Abstract
The skin plays an essential role in preventing the entry of external environmental threats and the loss of internal substances, depending on the epidermal permeability barrier. Nuclear receptors (NRs), present in various tissues and organs including full-thickness skin, have been demonstrated to exert significant effects on the epidermal lipid barrier. Formation of the lipid lamellar membrane and the normal proliferation and differentiation of keratinocytes (KCs) are crucial for the development of the epidermal permeability barrier and is regulated by specific NRs such as PPAR, LXR, VDR, RAR/RXR, AHR, PXR and FXR. These receptors play a key role in regulating KC differentiation and the entire process of epidermal lipid synthesis, processing and secretion. Lipids derived from sebaceous glands are influenced by NRs as well and participate in regulation of the epidermal lipid barrier. Furthermore, intricate interplay exists between these receptors. Disturbance of barrier function leads to a range of diseases, including psoriasis, atopic dermatitis and acne. Targeting these NRs with agonists or antagonists modulate pathways involved in lipid synthesis and cell differentiation, suggesting potential therapeutic approaches for dermatosis associated with barrier damage. This review focuses on the regulatory role of NRs in the maintenance and processing of the epidermal lipid barrier through their effects on skin lipid synthesis and KC differentiation, providing novel insights for drug targets to facilitate precision medicine strategies.
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Affiliation(s)
- Xidie Yin
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yu Yan
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jiandan Li
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Zhi Cao
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Shuzhan Shen
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Qihang Chang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yiting Zhao
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xiuli Wang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Peiru Wang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai, China
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Zhao R, Tang Y, Cao W, Zhao L, Wu Z, Chen X, Li Y, Jia X, Bai H. Identification of multiple plasma lipids as diagnostic biomarkers of hypercholesterolemia and the underlying mechanisms based on pseudo-targeted lipidomics. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2024; 38:e9723. [PMID: 38504484 DOI: 10.1002/rcm.9723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 02/03/2024] [Accepted: 02/04/2024] [Indexed: 03/21/2024]
Abstract
RATIONALE Hypercholesterolemia is an important risk factor for cardiovascular diseases and death. This study performed pseudo-targeted lipidomics to identify differentially expressed plasma lipids in hypercholesterolemia, to provide a scientific basis for the diagnosis and pathogenesis of hypercholesterolemia. METHODS Pseudo-targeted lipidomic analyses of plasma lipids from 20 patients with hypercholesterolemia and 20 normal control subjects were performed using liquid chromatography-mass spectrometry. Differentially expressed lipids were identified by principal component analysis and orthogonal partial least squares discriminant analysis. Receiver operating characteristic curves were used to identify differentially expressed lipids with high diagnostic value. The Kyoto Encyclopedia of Genes and Genomes pathway database was used to identify enriched metabolic pathways. RESULTS We identified 13 differentially expressed lipids in hypercholesterolemia using variable importance of projection > 1 and p < 0.05 as threshold parameters. The levels of eight sphingomyelins and cholesterol sulfate were higher and those of three triacylglycerols and lysophosphatidylcholine were reduced in hypercholesterolemia. Seven differentially expressed plasma lipids showed high diagnostic value for hypercholesterolemia. Functional enrichment analyses showed that pathways related to necroptosis, sphingolipid signaling, sphingolipid metabolism, and steroid hormone biosynthesis were enriched. CONCLUSIONS This pseudo-targeted lipidomics study demonstrated that multiple sphingomyelins and cholesterol sulfate were differentially expressed in the plasma of patients with hypercholesterolemia. We also identified seven plasma lipids, including six sphingomyelins and cholesterol sulfate, with high diagnostic value.
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Affiliation(s)
- Rui Zhao
- School of Public Health, Baotou Medical College, Baotou, Inner Mongolia, China
| | - Yuqing Tang
- School of Public Health, Baotou Medical College, Baotou, Inner Mongolia, China
| | - Wenhui Cao
- College of Life Sciences and Food Engineering, Inner Mongolia Minzu University, Tongliao, China
| | - Lijuan Zhao
- College of Life Sciences and Food Engineering, Inner Mongolia Minzu University, Tongliao, China
| | - Zhifeng Wu
- College of Life Sciences and Food Engineering, Inner Mongolia Minzu University, Tongliao, China
| | - Xianghui Chen
- School of Basic Medicine and Forensic Medicine, Baotou Medical College, Baotou, China
| | - Yimin Li
- School of Basic Medicine and Forensic Medicine, Baotou Medical College, Baotou, China
| | - Xiaoe Jia
- School of Basic Medicine and Forensic Medicine, Baotou Medical College, Baotou, China
- Inner Mongolia Key Laboratory of Hypoxic Translational Medicine, Baotou Medical College, Inner Mongolia, China
| | - Haihua Bai
- School of Public Health, Baotou Medical College, Baotou, Inner Mongolia, China
- Affiliated Hospital of Inner Mongolia Minzu University, Tongliao, China
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Zheng P, Ren D, Yu C, Zhang X, Zhang Y. DNA Methylation-Related circRNA_0116449 Is Involved in Lipid Peroxidation in Traumatic Brain Injury. Front Mol Neurosci 2022; 15:904913. [PMID: 35721315 PMCID: PMC9201693 DOI: 10.3389/fnmol.2022.904913] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 04/29/2022] [Indexed: 11/21/2022] Open
Abstract
Circular ribonucleic acid (circRNA) has a critical effect in central nervous diseases; however, the exact role of circRNAs in human traumatic brain injury (TBI) remains elusive. Epigenetic modifications, such as DNA methylation, can modify the mRNA level of genes without changing their related DNA sequence in response to brain insults. We hypothesized that DNA methylation-related circRNAs may be implicated in the mechanisms of TBI. The methylation-related circ_0116449 was identified from differential methylation positions and shown to reduce the neuronal loss and lipid markers. Mechanical study indicated that circ_0116449 functions as a miR-142-3p sponge and increases the expression of its target gene: NR1D2, together with NR1D1 and RORA to suppress lipid peroxidation both in vitro and in vivo. Our study suggests that DNA methylation-related circ_0116449 may be a novel target for regulating lipid metabolism in TBI.
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Affiliation(s)
- Ping Zheng
- Department of Neurosurgery, Shanghai Pudong New Area People’s Hospital, Shanghai, China
- *Correspondence: Ping Zheng,
| | - Dabin Ren
- Department of Neurosurgery, Shanghai Pudong New Area People’s Hospital, Shanghai, China
| | - Cong Yu
- Department of Neurosurgery, Shanghai Pudong New Area People’s Hospital, Shanghai, China
| | - Xiaoxue Zhang
- Department of Key Laboratory, Shanghai Pudong New Area People’s Hospital, Shanghai, China
| | - Yisong Zhang
- Department of Neurosurgery, Shanghai Pudong New Area People’s Hospital, Shanghai, China
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Ren B, Zhu Y. A New Perspective on Thyroid Hormones: Crosstalk with Reproductive Hormones in Females. Int J Mol Sci 2022; 23:ijms23052708. [PMID: 35269847 PMCID: PMC8911152 DOI: 10.3390/ijms23052708] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/25/2022] [Accepted: 02/21/2022] [Indexed: 12/19/2022] Open
Abstract
Accumulating evidence has shown that thyroid hormones (THs) are vital for female reproductive system homeostasis. THs regulate the reproductive functions through thyroid hormone receptors (THRs)-mediated genomic- and integrin-receptor-associated nongenomic mechanisms, depending on TH ligand status and DNA level, as well as transcription and extra-nuclear signaling transduction activities. These processes involve the binding of THs to intracellular THRs and steroid hormone receptors or membrane receptors and the recruitment of hormone-response elements. In addition, THs and other reproductive hormones can activate common signaling pathways due to their structural similarity and shared DNA consensus sequences among thyroid, peptide, and protein hormones and their receptors, thus constituting a complex and reciprocal interaction network. Moreover, THs not only indirectly affect the synthesis, secretion, and action of reproductive hormones, but are also regulated by these hormones at the same time. This crosstalk may be one of the pivotal factors regulating female reproductive behavior and hormone-related diseases, including tumors. Elucidating the interaction mechanism among the aforementioned hormones will contribute to apprehending the etiology of female reproductive diseases, shedding new light on the treatment of gynecological disorders.
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Affiliation(s)
- Bingtao Ren
- School of Pharmacy, Fudan University, Shanghai 200032, China;
| | - Yan Zhu
- Laboratory of Reproductive Pharmacology, NHC Key Laboratory of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai 200032, China
- Correspondence: ; Tel.: +86-21-64438416
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Sanchez LD, Pontini L, Marinozzi M, Sanchez-Aranguren LC, Reis A, Dias IHK. Cholesterol and oxysterol sulfates: Pathophysiological roles and analytical challenges. Br J Pharmacol 2020; 178:3327-3341. [PMID: 32762060 DOI: 10.1111/bph.15227] [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: 04/23/2020] [Revised: 07/01/2020] [Accepted: 07/20/2020] [Indexed: 01/18/2023] Open
Abstract
Cholesterol and oxysterol sulfates are important regulators of lipid metabolism, inflammation, cell apoptosis, and cell survival. Among the sulfate-based lipids, cholesterol sulfate (CS) is the most studied lipid both quantitatively and functionally. Despite the importance, very few studies have analysed and linked the actions of oxysterol sulfates to their physiological and pathophysiological roles. Overexpression of sulfotransferases confirmed the formation of a range of oxysterol sulfates and their antagonistic effects on liver X receptors (LXRs) prompting further investigations how are the changes to oxysterol/oxysterol sulfate homeostasis can contribute to LXR activity in the physiological milieu. Here, we aim to bring together for novel roles of oxysterol sulfates, the available techniques and the challenges associated with their analysis. Understanding the oxysterol/oxysterol sulfate levels and their pathophysiological mechanisms could lead to new therapeutic targets for metabolic diseases. LINKED ARTICLES: This article is part of a themed issue on Oxysterols, Lifelong Health and Therapeutics. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v178.16/issuetoc.
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Affiliation(s)
| | - Lorenzo Pontini
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | - Maura Marinozzi
- Department of Pharmaceutical Sciences, University of Perugia, Perugia, Italy
| | | | - Ana Reis
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
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Han YH, Shin KO, Kim JY, Khadka DB, Kim HJ, Lee YM, Cho WJ, Cha JY, Lee BJ, Lee MO. A maresin 1/RORα/12-lipoxygenase autoregulatory circuit prevents inflammation and progression of nonalcoholic steatohepatitis. J Clin Invest 2019; 129:1684-1698. [PMID: 30855276 DOI: 10.1172/jci124219] [Citation(s) in RCA: 100] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 01/24/2019] [Indexed: 12/16/2022] Open
Abstract
Retinoic acid-related orphan receptor α (RORα) is considered a key regulator of polarization in liver macrophages that is closely related to nonalcoholic steatohepatitis (NASH) pathogenesis. However, hepatic microenvironments that support the function of RORα as a polarity regulator were largely unknown. Here, we identified maresin 1 (MaR1), a docosahexaenoic acid (DHA) metabolite with a function of specialized proresolving mediator, as an endogenous ligand of RORα. MaR1 enhanced the expression and transcriptional activity of RORα and thereby increased the M2 polarity of liver macrophages. Administration of MaR1 protected mice from high-fat diet-induced NASH in a RORα-dependent manner. Surprisingly, RORα increased the level of MaR1 through transcriptional induction of 12-lipoxygenase (12-LOX), a key enzyme in MaR1 biosynthesis. Furthermore, we demonstrated that modulation of 12-LOX activity enhanced the protective function of DHA against NASH. Together, these results suggest that the MaR1/RORα/12-LOX autoregulatory circuit could offer potential therapeutic strategies for curing NASH.
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Affiliation(s)
- Yong-Hyun Han
- College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Kyong-Oh Shin
- College of Pharmacy, Chungbuk National University, Cheongju, South Korea
| | - Ju-Yeon Kim
- College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Daulat B Khadka
- College of Pharmacy, Chonnam National University, Gwangju, South Korea
| | - Hyeon-Ji Kim
- College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Yong-Moon Lee
- College of Pharmacy, Chungbuk National University, Cheongju, South Korea
| | - Won-Jea Cho
- College of Pharmacy, Chonnam National University, Gwangju, South Korea
| | - Ji-Young Cha
- Laboratory of Cell Metabolism and Gene Regulation, Lee Gil Ya Cancer and Diabetes Institute, Gachon University, Incheon, South Korea
| | - Bong-Jin Lee
- College of Pharmacy, Seoul National University, Seoul, South Korea
| | - Mi-Ock Lee
- College of Pharmacy, Seoul National University, Seoul, South Korea.,Bio-MAX Institute and.,Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, South Korea
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Liu Y, Chen Y, Zhang J, Liu Y, Zhang Y, Su Z. Retinoic acid receptor-related orphan receptor α stimulates adipose tissue inflammation by modulating endoplasmic reticulum stress. J Biol Chem 2017; 292:13959-13969. [PMID: 28698385 DOI: 10.1074/jbc.m117.782391] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 07/06/2017] [Indexed: 02/05/2023] Open
Abstract
Adipose tissue inflammation has been linked to metabolic diseases such as obesity and type 2 diabetes. However, the molecules that mediate inflammation in adipose tissue have not been addressed. Although retinoic acid receptor-related orphan receptor α (RORα) is known to be involved in the regulation of inflammatory response in some tissues, its role is largely unknown in adipose tissue. Conversely, it is known that endoplasmic reticulum (ER) stress and unfolding protein response (UPR) signaling affect the inflammatory response in obese adipose tissue, but whether RORα regulates these processes remains unknown. In this study, we investigate the link between RORα and adipose tissue inflammation. We showed that the inflammatory response in macrophages or 3T3-L1 adipocytes stimulated by lipopolysaccharide, as well as adipose tissue in obese mice, markedly increased the expression of RORα. Adenovirus-mediated overexpression of RORα or treatment with the RORα-specific agonist SR1078 enhanced the expression of inflammatory cytokines and increased the number of infiltrated macrophages into adipose tissue. Furthermore, SR1078 up-regulated the mRNA expression of ER stress response genes and enhanced phosphorylations of two of the three mediators of major UPR signaling pathways, PERK and IRE1α. Finally, we found that alleviation of ER stress using a chemical chaperone followed by the suppression of RORα induced inflammation in adipose tissue. Our data suggest that RORα-induced ER stress response potentially contributes to the adipose tissue inflammation that can be mitigated by treatment with chemical chaperones. The relationships established here between RORα expression, inflammation, and UPR signaling may have implications for therapeutic targeting of obesity-related metabolic diseases.
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Affiliation(s)
- Yin Liu
- From the Molecular Medicine Research Center, West China Hospital, State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610041, Sichuan, China
| | - Yulong Chen
- From the Molecular Medicine Research Center, West China Hospital, State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610041, Sichuan, China
| | - Jinlong Zhang
- From the Molecular Medicine Research Center, West China Hospital, State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610041, Sichuan, China
| | - Yulan Liu
- From the Molecular Medicine Research Center, West China Hospital, State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610041, Sichuan, China
| | - Yanjie Zhang
- From the Molecular Medicine Research Center, West China Hospital, State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610041, Sichuan, China
| | - Zhiguang Su
- From the Molecular Medicine Research Center, West China Hospital, State Key Laboratory of Biotherapy, Sichuan University, Chengdu 610041, Sichuan, China.
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Carter CL, Jones JW, Barrow K, Kieta K, Taylor-Howell C, Kearney S, Smith CP, Gibbs A, Farese AM, MacVittie TJ, Kane MA. A MALDI-MSI Approach to the Characterization of Radiation-Induced Lung Injury and Medical Countermeasure Development. HEALTH PHYSICS 2015; 109:466-78. [PMID: 26425906 PMCID: PMC4745118 DOI: 10.1097/hp.0000000000000353] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Radiation-induced lung injury is highly complex and characterized by multiple pathologies, which occur over time and sporadically throughout the lung. This complexity makes biomarker investigations and medical countermeasure screenings challenging. Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) has the ability to resolve differences spatially in molecular profiles within the lung following radiation exposure and can aid in biomarker identification and pharmaceutical efficacy investigations. MALDI-MSI was applied to the investigation of a whole-thorax lung irradiation model in non-human primates (NHP) for lipidomic analysis and medical countermeasure distribution.
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Affiliation(s)
- Claire L. Carter
- University of Maryland, School of Pharmacy, Department of Pharmaceutical Sciences
| | - Jace W. Jones
- University of Maryland, School of Pharmacy, Department of Pharmaceutical Sciences
| | - Kory Barrow
- University of Maryland, School of Medicine, Department of Radiation Oncology, Baltimore, MD 21201
| | - Kaitlyn Kieta
- University of Maryland, School of Medicine, Department of Radiation Oncology, Baltimore, MD 21201
| | - Cheryl Taylor-Howell
- University of Maryland, School of Medicine, Department of Radiation Oncology, Baltimore, MD 21201
| | - Sean Kearney
- University of Maryland, School of Medicine, Department of Radiation Oncology, Baltimore, MD 21201
| | - Cassandra P. Smith
- University of Maryland, School of Medicine, Department of Radiation Oncology, Baltimore, MD 21201
| | - Allison Gibbs
- University of Maryland, School of Medicine, Department of Radiation Oncology, Baltimore, MD 21201
| | - Ann M. Farese
- University of Maryland, School of Medicine, Department of Radiation Oncology, Baltimore, MD 21201
| | - Thomas J. MacVittie
- University of Maryland, School of Medicine, Department of Radiation Oncology, Baltimore, MD 21201
| | - Maureen A. Kane
- University of Maryland, School of Pharmacy, Department of Pharmaceutical Sciences
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El Baroudi M, La Sala D, Cinti C, Capobianco E. Pathway landscapes and epigenetic regulation in breast cancer and melanoma cell lines. Theor Biol Med Model 2014; 11 Suppl 1:S8. [PMID: 25077705 PMCID: PMC4108926 DOI: 10.1186/1742-4682-11-s1-s8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Epigenetic variation is a main regulation mechanism of gene expression in various cancer histotypes, and due to its reversibility, the potential impact in therapy can be very relevant. METHODS Based on a selected pair, breast cancer (BC) and melanoma, we conducted inference analysis in parallel on a few cell lines (MCF-7 for BC and A375 for melanoma). Starting from differential expression after treatment with a demethylating agent, the 5-Aza-2'-deoxycytidine (DAC), we provided pathway enrichment analysis and gene regulatory maps with cross-linked microRNAs and transcription factors. RESULTS Several oncogenic signaling pathways altered upon DAC treatment were detected with significant enrichment. We represented the association between these cancers by depicting the landscape of common and specific variation affecting them.
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Kuang J, Hou X, Zhang J, Chen Y, Su Z. Identification of insulin as a novel retinoic acid receptor-related orphan receptor α target gene. FEBS Lett 2014; 588:1071-9. [PMID: 24583012 DOI: 10.1016/j.febslet.2014.02.029] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2013] [Revised: 01/27/2014] [Accepted: 02/14/2014] [Indexed: 02/05/2023]
Abstract
Insulin plays an important role in regulation of lipid and glucose metabolism. Retinoic acid receptor-related orphan receptor α (RORα) modulates physiopathological processes such as dyslipidemia and diabetes. In this study, we found overexpression of RORα in INS1 cells resulted in increased expression and secretion of insulin. Suppression of endogenous RORα caused a decrease of insulin expression. Luciferase and electrophoretic mobility shift assay (EMSA) assays demonstrated that RORα activated insulin transcription via direct binding to its promoter. RORα was also observed to regulate BETA2 expression, which is one of the insulin active transfactors. In vivo analyses showed that the insulin transcription is increased by the synthetic RORα agonist SR1078. These findings identify RORα as a transcriptional activator of insulin and suggest novel therapeutic opportunities for management of the disease.
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Affiliation(s)
- Jiangying Kuang
- Molecular Medicine Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Xiaoming Hou
- Molecular Medicine Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Jinlong Zhang
- Molecular Medicine Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Yulong Chen
- Molecular Medicine Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China
| | - Zhiguang Su
- Molecular Medicine Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, China.
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Gu T, Zhu MJ, Schroyen M, Qu L, Nettleton D, Kuhar D, Lunney JK, Ross JW, Zhao SH, Tuggle CK. Endometrial gene expression profiling in pregnant Meishan and Yorkshire pigs on day 12 of gestation. BMC Genomics 2014; 15:156. [PMID: 24564230 PMCID: PMC3940021 DOI: 10.1186/1471-2164-15-156] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2013] [Accepted: 02/17/2014] [Indexed: 12/03/2022] Open
Abstract
Background Litter size in pigs is a major factor affecting the profitability in the pig industry. The peri-implantation window in pigs is characterized by the coordinated interactions between the maternal uterine endometrium and the rapidly elongating conceptuses and represents a period of time during which a large percentage of the developing conceptuses are lost. However, the gene expression and regulatory networks in the endometrium contributing to the establishment of the maternal: placental interface remain poorly understood. Results We characterized the endometrial gene expression profile during the peri-implantation stage of development by comparing two breeds that demonstrate very different reproductive efficiencies. We employed the porcine Affymetrix GeneChip® to assay the transcriptomic profiles of genes expressed in the uterine endometrium obtained from Meishan and Yorkshire gilts (n = 4 for each breed) on day 12 of gestation (M12 and Y12, respectively). Total of 17,076 probesets were identified as "present" in at least two arrays. A mixed model-based statistical analysis predicted a total of 2,656 (q < 0.1) transcripts as differentially expressed between Meishan and Yorkshire pigs. Eighteen differentially expressed transcripts of interest were validated by quantitative real-time PCR. Gene ontology (GO) annotation revealed that the known functions of the differentially expressed genes were involved in a series of important biological processes relevant to early pregnancy establishment in the pig. Conclusions The results identified endometrial gene expression profiles of two breeds differing in litter size and identified candidate genes that are related to known physiological pathways related to reproductive prolificacy. These findings provide a deeper understanding of molecular pathways differing between two breeds at the critical peri-implantation stage of pregnancy, which can be utilized to better understand the events contributing to pregnancy establishment in the pig.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Shu-hong Zhao
- Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan 430070, P, R, China.
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Demerath EW, Liu CT, Franceschini N, Chen G, Palmer JR, Smith EN, Chen CTL, Ambrosone CB, Arnold AM, Bandera EV, Berenson GS, Bernstein L, Britton A, Cappola AR, Carlson CS, Chanock SJ, Chen W, Chen Z, Deming SL, Elks CE, Evans MK, Gajdos Z, Henderson BE, Hu JJ, Ingles S, John EM, Kerr KF, Kolonel LN, Le Marchand L, Lu X, Millikan RC, Musani SK, Nock NL, North K, Nyante S, Press MF, Rodriquez-Gil JL, Ruiz-Narvaez EA, Schork NJ, Srinivasan SR, Woods NF, Zheng W, Ziegler RG, Zonderman A, Heiss G, Gwen Windham B, Wellons M, Murray SS, Nalls M, Pastinen T, Rajkovic A, Hirschhorn J, Adrienne Cupples L, Kooperberg C, Murabito JM, Haiman CA. Genome-wide association study of age at menarche in African-American women. Hum Mol Genet 2013; 22:3329-46. [PMID: 23599027 DOI: 10.1093/hmg/ddt181] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
African-American (AA) women have earlier menarche on average than women of European ancestry (EA), and earlier menarche is a risk factor for obesity and type 2 diabetes among other chronic diseases. Identification of common genetic variants associated with age at menarche has a potential value in pointing to the genetic pathways underlying chronic disease risk, yet comprehensive genome-wide studies of age at menarche are lacking for AA women. In this study, we tested the genome-wide association of self-reported age at menarche with common single-nucleotide polymorphisms (SNPs) in a total of 18 089 AA women in 15 studies using an additive genetic linear regression model, adjusting for year of birth and population stratification, followed by inverse-variance weighted meta-analysis (Stage 1). Top meta-analysis results were then tested in an independent sample of 2850 women (Stage 2). First, while no SNP passed the pre-specified P < 5 × 10(-8) threshold for significance in Stage 1, suggestive associations were found for variants near FLRT2 and PIK3R1, and conditional analysis identified two independent SNPs (rs339978 and rs980000) in or near RORA, strengthening the support for this suggestive locus identified in EA women. Secondly, an investigation of SNPs in 42 previously identified menarche loci in EA women demonstrated that 25 (60%) of them contained variants significantly associated with menarche in AA women. The findings provide the first evidence of cross-ethnic generalization of menarche loci identified to date, and suggest a number of novel biological links to menarche timing in AA women.
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Affiliation(s)
- Ellen W Demerath
- Division of Epidemiology and Community Health, School of Public Health, University of Minnesota, Minneapolis, MN, USA.
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Hiroi H, Momoeda M, Watanabe T, Ito M, Ikeda K, Tsutsumi R, Hosokawa Y, Koizumi M, Zenri F, Muramatsu M, Taketani Y, Inoue S. Expression and regulation of transient receptor potential cation channel, subfamily M, member 2 (TRPM2) in human endometrium. Mol Cell Endocrinol 2013; 365:146-52. [PMID: 23142700 DOI: 10.1016/j.mce.2012.10.015] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 09/09/2012] [Accepted: 10/12/2012] [Indexed: 12/27/2022]
Abstract
To identify estrogen-responsive genes, we previously isolated estrogen receptor (ER)-binding DNA fragments from human genomic DNA using a recombinant ER protein. Six DNA fragments, each including a perfect palindromic estrogen response element (ERE), were obtained. The nucleotide sequence of one of the six fragments (E1 fragment) showed that the ERE of the E1 fragment is located in the 3'-untranslated region (UTR) of transient receptor potential cation channel, subfamily M, member 2 (TRPM2). Here, we confirmed the estrogen-dependent enhancer activity of the ERE of the E1 fragment by chloramphenicol acetyltransferase assay. TRPM2 mRNA expression was investigated in human endometrium, cultured human endometrial stromal cells (ESCs), and cultured human endometrial epithelial cells (EECs) using RT-PCR. Quantitative RT-PCR revealed that TRPM2 mRNA expression in ESCs increased after 17β-estradiol (E2) treatment. This study demonstrated for the first time that TRPM2 is an estrogen-responsive gene expressed in human endometrial cells.
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Affiliation(s)
- Hisahiko Hiroi
- Department of Obstetrics and Gynecology, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
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Du J, Xu R. RORα, a potential tumor suppressor and therapeutic target of breast cancer. Int J Mol Sci 2012; 13:15755-66. [PMID: 23443091 PMCID: PMC3546659 DOI: 10.3390/ijms131215755] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 11/17/2012] [Accepted: 11/19/2012] [Indexed: 12/29/2022] Open
Abstract
The function of the nuclear receptor (NR) in breast cancer progression has been investigated for decades. The majority of the nuclear receptors have well characterized natural ligands, but a few of them are orphan receptors for which no ligand has been identified. RORα, one member of the retinoid orphan nuclear receptor (ROR) subfamily of orphan receptors, regulates various cellular and pathological activities. RORα is commonly down-regulated and/or hypoactivated in breast cancer compared to normal mammary tissue. Expression of RORα suppresses malignant phenotypes in breast cancer cells, in vitro and in vivo. Activity of RORα can be categorized into the canonical and non-canonical nuclear receptor pathways, which in turn regulate various breast cancer cellular function, including cell proliferation, apoptosis and invasion. This information suggests that RORα is a potent tumor suppressor and a potential therapeutic target for breast cancer.
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Affiliation(s)
- Jun Du
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA; E-Mail:
| | - Ren Xu
- Markey Cancer Center, University of Kentucky, Lexington, KY 40536, USA; E-Mail:
- Department of Molecular and Biomedical Pharmacology, University of Kentucky, Lexington, KY 40536, USA
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-859-323-7889; Fax: +1-859-257-6030
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Hanyu O, Nakae H, Miida T, Higashi Y, Fuda H, Endo M, Kohjitani A, Sone H, Strott CA. Cholesterol sulfate induces expression of the skin barrier protein filaggrin in normal human epidermal keratinocytes through induction of RORα. Biochem Biophys Res Commun 2012; 428:99-104. [PMID: 23063684 DOI: 10.1016/j.bbrc.2012.10.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 10/02/2012] [Indexed: 02/07/2023]
Abstract
Cholesterol sulfate is abundant in the human epidermis and is a putative natural ligand for retinoic acid receptor-related orphan receptor alpha (RORα). Although direct binding of cholesterol sulfate is expected to activate RORα, cholesterol sulfate can also induce RORα expression and increase RORα target gene expression. The purpose of this study was to determine whether cholesterol sulfate induces profilaggrin expression, a precursor of the barrier protein filaggrin in the epidermis, through activation of RORα by directly binding to RORα, or through increased RORα expression. Immunohistochemical and polymerase chain reaction (PCR) analyses showed that RORα was expressed in normal human epidermal keratinocytes (NHEKs) and that its expression increased during keratinocyte differentiation in parallel with that of profilaggrin and cholesterol sulfotransferase, which catalyzes the synthesis of cholesterol sulfate. Exogenous cholesterol sulfate significantly increased both RORα and profilaggrin expression in NHEKs, whereas no effect on profilaggrin expression was observed in cells in which RORα was knocked down with small interfering RNA (siRNA). Additionally, a luciferase reporter gene assay revealed that exogenous RORα dose-dependently increased the activity of the profilaggrin gene promoter even in the absence of cholesterol sulfate, and that this response involves activator protein-1. In conclusion, the results of this study indicate that cholesterol sulfate induces filaggrin expression through increased RORα expression. Further studies are required to fully elucidate the mechanisms involved.
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Affiliation(s)
- Osamu Hanyu
- Section on Steroid Regulation, The Endocrinology and Reproduction Research Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA.
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