1
|
Ghosh P, Magee N, Akakpo JY, Ahamed F, Eppler N, Jones E, Yu Y, He L, Lebofsky M, Dai H, Jaeschke H, Ding WX, Zhang Y. Hepatocyte-specific deletion of small heterodimer partner protects mice against acetaminophen-induced hepatotoxicity via activation of Nrf2. Toxicol Sci 2023; 197:53-68. [PMID: 37792503 PMCID: PMC10734614 DOI: 10.1093/toxsci/kfad104] [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] [Indexed: 10/06/2023] Open
Abstract
Acetaminophen (APAP) overdose stands as the primary cause of acute liver failure in the United States. APAP hepatotoxicity involves hepatic glutathione (GSH) depletion and mitochondrial damage. To counteract the toxicity of APAP, the nuclear factor erythroid 2 like 2 (Nrf2) activates the expression of genes responsible for drug detoxification and GSH synthesis. In this study, we present evidence that the elimination of hepatocyte small heterodimer partner, a critical transcriptional repressor for liver metabolism, results in Nrf2 activation and protects mice from APAP-induced acute liver injury. Initial investigations conducted on wildtype (WT) mice revealed a swift downregulation of Shp mRNA within the first 24 h after APAP administration. Subsequent treatment of hepatocyte-specific Shp knockout (ShpHep-/-) mice with 300 mg/kg APAP for 2 h exhibited comparable bioactivation of APAP with that observed in the WT controls. However, a significant reduction in liver injury was observed in ShpHep-/- after APAP treatment for 6 and 24 h. The decreased liver injury correlated with a faster recovery of GSH, attributable to heightened expression of Nrf2 target genes involved in APAP detoxification and GSH synthesis. Moreover, in vitro studies revealed that SHP protein interacted with NRF2 protein, inhibiting the transcription of Nrf2 target genes. These findings hold relevance for humans, as overexpression of SHP hindered APAP-induced NRF2 activation in primary human hepatocytes. In conclusion, our studies have unveiled a novel regulatory axis involving SHP and NRF2 in APAP-induced acute liver injury, emphasizing SHP as a promising therapeutic target in APAP overdose-induced hepatotoxicity.
Collapse
Affiliation(s)
- Priyanka Ghosh
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Nancy Magee
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Jephte Y Akakpo
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Forkan Ahamed
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Natalie Eppler
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Elizabeth Jones
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Yifan Yu
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Lily He
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Margitta Lebofsky
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Hongyan Dai
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Hartmut Jaeschke
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Wen-Xing Ding
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| | - Yuxia Zhang
- Department of Pharmacology, Toxicology and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, USA
| |
Collapse
|
2
|
Shaw RPH, Kolyvas P, Dang N, Hyon A, Bailey K, Anakk S. Loss of Hepatic Small Heterodimer Partner Elevates Ileal Bile Acids and Alters Cell Cycle-related Genes in Male Mice. Endocrinology 2022; 163:6572176. [PMID: 35451003 PMCID: PMC9113360 DOI: 10.1210/endocr/bqac052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Indexed: 11/19/2022]
Abstract
Small heterodimer partner (Shp) regulates several metabolic processes, including bile acid levels, but lacks the conserved DNA binding domain. Phylogenetic analysis revealed conserved genetic evolution of SHP, FXR, CYP7A1, and CYP8B1. Shp, although primarily studied as a downstream target of Farnesoid X Receptor (Fxr), has a distinct hepatic role that is poorly understood. Here, we report that liver-specific Shp knockout (LShpKO) mice have impaired negative feedback of Cyp7a1 and Cyp8b1 on bile acid challenge and demonstrate that a single copy of the Shp gene is sufficient to maintain this response. LShpKO mice also exhibit elevated total bile acid pool with ileal bile acid composition mimicking that of cholic acid-fed control mice. Agonistic activation of Fxr (GW4064) in the LShpKO did not alter the elevated basal expression of Cyp8b1 but lowered Cyp7a1 expression. We found that deletion of Shp led to an enrichment of distinct motifs and pathways associated with circadian rhythm, copper ion transport, and DNA synthesis. We confirmed increased expression of metallothionein genes that can regulate copper levels in the absence of SHP. LShpKO livers also displayed a higher basal proliferation that was exacerbated specifically with bile acid challenge either with cholic acid or 3,5-diethoxycarbonyl-1,4-dihydrocollidine but not with another liver mitogen, 1,4-bis[2-(3,5-dichloropyridyloxy)]benzene. Overall, our data indicate that hepatic SHP uniquely regulates certain proliferative and metabolic cues.
Collapse
Affiliation(s)
| | - Peter Kolyvas
- Department of Molecular and Integrative Physiology, Urbana, IL 61801, USA
| | - Nathanlown Dang
- Department of Molecular and Integrative Physiology, Urbana, IL 61801, USA
| | - Angela Hyon
- Department of Molecular and Integrative Physiology, Urbana, IL 61801, USA
| | - Keith Bailey
- Veterinary Diagnostic Laboratory, Urbana, IL 61801, USA
| | - Sayeepriyadarshini Anakk
- Department of Molecular and Integrative Physiology, Urbana, IL 61801, USA
- Beckman Institute for Advanced Science and Technology, Urbana, IL 61801, USA
- Division of Nutritional Sciences, Urbana, IL 61801, USA
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Correspondence: Sayeepriyadarshini Anakk, PhD, Department of Molecular and Integrative Physiology, Beckman Institute for Advanced Science and Technology, Division of Nutritional Sciences, Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL, USA. E-mail:
| |
Collapse
|
3
|
Barker CG, Petsalaki E, Giudice G, Sero J, Ekpenyong EN, Bakal C, Petsalaki E. Identification of phenotype-specific networks from paired gene expression-cell shape imaging data. Genome Res 2022; 32:750-765. [PMID: 35197309 PMCID: PMC8997347 DOI: 10.1101/gr.276059.121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 02/17/2022] [Indexed: 11/24/2022]
Abstract
The morphology of breast cancer cells is often used as an indicator of tumor severity and prognosis. Additionally, morphology can be used to identify more fine-grained, molecular developments within a cancer cell, such as transcriptomic changes and signaling pathway activity. Delineating the interface between morphology and signaling is important to understand the mechanical cues that a cell processes in order to undergo epithelial-to-mesenchymal transition and consequently metastasize. However, the exact regulatory systems that define these changes remain poorly characterized. In this study, we used a network-systems approach to integrate imaging data and RNA-seq expression data. Our workflow allowed the discovery of unbiased and context-specific gene expression signatures and cell signaling subnetworks relevant to the regulation of cell shape, rather than focusing on the identification of previously known, but not always representative, pathways. By constructing a cell-shape signaling network from shape-correlated gene expression modules and their upstream regulators, we found central roles for developmental pathways such as WNT and Notch, as well as evidence for the fine control of NF-kB signaling by numerous kinase and transcriptional regulators. Further analysis of our network implicates a gene expression module enriched in the RAP1 signaling pathway as a mediator between the sensing of mechanical stimuli and regulation of NF-kB activity, with specific relevance to cell shape in breast cancer.
Collapse
|
4
|
Nguyen JT, Riessen R, Zhang T, Kieffer C, Anakk S. Deletion of Intestinal SHP Impairs Short-term Response to Cholic Acid Challenge in Male Mice. Endocrinology 2021; 162:6189092. [PMID: 33769482 PMCID: PMC8256632 DOI: 10.1210/endocr/bqab063] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Indexed: 02/07/2023]
Abstract
Small heterodimer partner (SHP) is a crucial regulator of bile acid (BA) transport and synthesis; however, its intestine-specific role is not fully understood. Here, we report that male intestine-specific Shp knockout (IShpKO) mice exhibit higher intestinal BA but not hepatic or serum BA levels compared with the f/f Shp animals when challenged with an acute (5-day) 1% cholic acid (CA) diet. We also found that BA synthetic genes Cyp7a1 and Cyp8b1 are not repressed to the same extent in IShpKO compared with control mice post-CA challenge. Loss of intestinal SHP did not alter Fxrα messenger RNA (mRNA) but increased Asbt (BA ileal uptake transporter) and Ostα (BA ileal efflux transporter) expression even under chow-fed conditions. Surprisingly, the acute CA diet in IShpKO did not elicit the expected induction of Fgf15 but was able to maintain the suppression of Asbt, and Ostα/β mRNA levels. At the protein level, apical sodium-dependent bile acid transporter (ASBT) was downregulated, while organic solute transporter-α/β (OSTα/β) expression was induced and maintained regardless of diet. Examination of ileal histology in IShpKO mice challenged with acute CA diet revealed reduced villi length and goblet cell numbers. However, no difference in villi length, and the expression of BA regulator and transporter genes, was seen between f/f Shp and IShpKO animals after a chronic (14-day) CA diet, suggesting a potential adaptive response. We found the upregulation of the Pparα-Ugt axis after 14 days of CA diet may reduce the BA burden and compensate for the ileal SHP function. Thus, our study reveals that ileal SHP expression contributes to both overall intestinal structure and BA homeostasis.
Collapse
Affiliation(s)
- James T Nguyen
- Department of Molecular & Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Ryan Riessen
- Department of Molecular & Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Tongyu Zhang
- Department of Microbiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Collin Kieffer
- Department of Microbiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Sayeepriyadarshini Anakk
- Department of Molecular & Integrative Physiology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
- Correspondence:Sayeepriyadarshini Anakk, Department of Molecular & Integrative Physiology and Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, 450 Medical Science Building, 506 South Matthews Avenue, Urbana, IL 61801, USA. E-mail:
| |
Collapse
|
5
|
Zhu R, Tu Y, Chang J, Xu H, Li JC, Liu W, Do AD, Zhang Y, Wang J, Li B. The Orphan Nuclear Receptor Gene NR0B2 Is a Favorite Prognosis Factor Modulated by Multiple Cellular Signal Pathways in Human Liver Cancers. Front Oncol 2021; 11:691199. [PMID: 34055653 PMCID: PMC8162207 DOI: 10.3389/fonc.2021.691199] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 04/26/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Liver cancer is a leading cause of cancer death worldwide, and novel prognostic factor is needed for early detection and therapeutic responsiveness monitoring. The orphan nuclear receptor NR0B2 was reported to suppress liver cancer development in a mouse model, and its expression levels were reduced in liver cancer tissues and cell lines due to hypermethylation within its promoter region. However, it is not clear if NR0B2 expression is associated with cancer survival or disease progression and how NR0B2 gene expression is regulated at the molecular level. METHODS Multiple cancer databases were utilized to explore NR0B2 gene expression profiles crossing a variety of human cancers, including liver cancers, on several publicly assessable bioinformatics platforms. NR0B2 gene expression with or without kinase inhibitor treatment was analyzed using the qPCR technique, and NR0B2 protein expression was assessed in western blot assays. Two human hepatocellular carcinoma cell lines HepG2 and Huh7, were used in these experiments. NR0B2 gene activation was evaluated using NR0B2 promoter-driven luciferase reporter assays. RESULTS NR0B2 gene is predominantly expressed in liver tissue crossing human major organs or tissues, but it is significantly downregulated in liver cancers. NR0B2 expression is mostly downregulated in most common cancers but also upregulated in a few intestinal cancers. NR0B2 gene expression significantly correlated with patient overall survival status in multiple human malignancies, including lung, kidney, breast, urinary bladder, thyroid, colon, and head-neck cancers, as well as liposarcoma and B-cell lymphoma. In liver cancer patients, higher NR0B2 expression is associated with favorite relapse-free and progression-free survival, especially in Asian male patients with viral infection history. In addition, NR0B2 expression negatively correlated with immune infiltration and PIK3CA and PIK3CG gene expression in liver cancer tissues. In HepG2 and Huh7 cells, NR0B2 expression at the transcription level was drastically reduced after MAPK inhibition but was significantly enhanced after PI3K inhibition. CONCLUSION NR0B2 gene expression is altered mainly in most human malignancies and significantly reduced in liver cancers. NR0B2 is a prognosis factor for patient survival in liver cancers. MAPK and PI3K oppositely modulate NR0B2 expression, and NR0B2 gene upregulation might serve as a therapeutic responsiveness factor in anti-PI3K therapy for liver cancer.
Collapse
Affiliation(s)
- Runzhi Zhu
- The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China,Zhejiang University Cancer Center, Hangzhou, China,Department of Urology, The University of Kansas Medical Center, Kansas City, KS, United States,*Correspondence: Runzhi Zhu, ; Benyi Li,
| | - Yanjie Tu
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Jingxia Chang
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Haixia Xu
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Jean C. Li
- Department of Pharmacology, Toxicology & Therapeutics, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Wang Liu
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Ahn-Dao Do
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Yuxia Zhang
- Department of Pharmacology, Toxicology & Therapeutics, The University of Kansas Medical Center, Kansas City, KS, United States
| | - Jinhu Wang
- The Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, China,Zhejiang University Cancer Center, Hangzhou, China
| | - Benyi Li
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, United States,*Correspondence: Runzhi Zhu, ; Benyi Li,
| |
Collapse
|
6
|
Kumar S, Vijayan R, Dash AK, Gourinath S, Tyagi RK. Nuclear receptor SHP dampens transcription function and abrogates mitotic chromatin association of PXR and ERα via intermolecular interactions. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2021; 1864:194683. [PMID: 33444783 DOI: 10.1016/j.bbagrm.2020.194683] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 11/29/2020] [Accepted: 12/29/2020] [Indexed: 01/07/2023]
Abstract
Mitosis is a cellular process that produces two identical progenies. Genome-wide transcription is believed to be silenced during mitosis. However, some transcription factors have been reported to associate with the mitotic chromatin to uphold a role in 'gene-bookmarking'. Here, we investigated the dynamic role of nuclear receptor SHP during cell cycle, and observed intermolecular interactions with PXR and ERα. This was reflected in altered subcellular localization, transcription function and mitotic chromatin behavior of these receptors. Subsequently, by in silico and live cell imaging approaches we identified the minimal domain(s) and crucial amino-acid residues required for such receptor-receptor interactions. It was apparent that both PXR/ERα interact with SHP to translocate cytoplasmic RFP-tagged SHP into the nucleus. In addition, during mitosis SHP interacted with some of the key nuclear receptors, altering partners, as well as, its own relationship with mitotic chromatin. SHP displaced a major fraction of PXR and ERα from the mitotic chromatin while promoted its own weak association reflected in its binding. Since SHP lacks DBD this association is attributed to receptor-receptor interactions rather than SHP-DNA interactions. The abrogation of PXR and ERα from the mitotic chromatin by SHP implies potential implications in regulation of gene bookmarking events in cellular development. Overall, it is concluded that intermolecular interactions between SHP and partner PXR/ERα result in attenuation of target promoter activities. It is proposed that SHP may act as an indirect physiological regulator and functions in a hog-tie manner by displacing the interacting transcription factor from gene regulatory sites.
Collapse
Affiliation(s)
- Sudhir Kumar
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | | | - Amit K Dash
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India
| | - Samudrala Gourinath
- School of Life Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Rakesh K Tyagi
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi 110067, India.
| |
Collapse
|
7
|
Lam KK, Sethi R, Tan G, Tomar S, Lo M, Loi C, Tang CL, Tan E, Lai PS, Cheah PY. The orphan nuclear receptor
NR0B2
could be a novel susceptibility locus associated with microsatellite‐stable,
APC
mutation‐negative early‐onset colorectal carcinomas with metabolic manifestation. Genes Chromosomes Cancer 2020; 60:61-72. [DOI: 10.1002/gcc.22904] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/16/2020] [Accepted: 10/19/2020] [Indexed: 12/15/2022] Open
Affiliation(s)
- Kuen Kuen Lam
- Department of Colorectal Surgery Singapore General Hospital Singapore Singapore
| | - Raman Sethi
- Department of Paediatrics, Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore
| | - Grace Tan
- Department of Paediatrics, Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore
| | - Swati Tomar
- Department of Paediatrics, Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore
| | - Michelle Lo
- Department of Colorectal Surgery Singapore General Hospital Singapore Singapore
| | - Carol Loi
- Department of Colorectal Surgery Singapore General Hospital Singapore Singapore
| | - Choong Leong Tang
- Department of Colorectal Surgery Singapore General Hospital Singapore Singapore
| | - Emile Tan
- Department of Colorectal Surgery Singapore General Hospital Singapore Singapore
| | - Poh San Lai
- Department of Paediatrics, Yong Loo Lin School of Medicine National University of Singapore Singapore Singapore
- Genome Institute of Singapore, A*STAR Singapore Singapore
| | - Peh Yean Cheah
- Department of Colorectal Surgery Singapore General Hospital Singapore Singapore
- Saw Swee Hock School of Public Health National University of Singapore Singapore Singapore
- Duke‐NUS Medical School National University of Singapore Singapore Singapore
| |
Collapse
|
8
|
Li Z, Lou Y, Tian G, Wu J, Lu A, Chen J, Xu B, Shi J, Yang J. Discovering master regulators in hepatocellular carcinoma: one novel MR, SEC14L2 inhibits cancer cells. Aging (Albany NY) 2019; 11:12375-12411. [PMID: 31851620 PMCID: PMC6949064 DOI: 10.18632/aging.102579] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 11/26/2019] [Indexed: 12/12/2022]
Abstract
Identification of master regulator (MR) genes offers a relatively rapid and efficient way to characterize disease-specific molecular programs. Since strong consensus regarding commonly altered MRs in hepatocellular carcinoma (HCC) is lacking, we generated a compendium of HCC datasets from 21 studies and identified a comprehensive signature consisting of 483 genes commonly deregulated in HCC. We then used reverse engineering of transcriptional networks to identify the MRs that underpin the development and progression of HCC. After cross-validation in different HCC datasets, systematic assessment using patient-derived data confirmed prognostic predictive capacities for most HCC MRs and their corresponding regulons. Our HCC signature covered well-established liver cancer hallmarks, and network analyses revealed coordinated interaction between several MRs. One novel MR, SEC14L2, exerted an anti-proliferative effect in HCC cells and strongly suppressed tumor growth in a mouse model. This study advances our knowledge of transcriptional MRs potentially involved in HCC development and progression that may be targeted by specific interventions.
Collapse
Affiliation(s)
- Zhihui Li
- Translational Medicine Center, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang 310015, P.R. China
| | - Yi Lou
- Translational Medicine Center, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang 310015, P.R. China.,Department of Occupational Medicine, Zhejiang Provincial Integrated Chinese and Western Medicine Hospital, Hangzhou, Zhejiang 310003, P.R. China
| | - Guoyan Tian
- Translational Medicine Center, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang 310015, P.R. China
| | - Jianyue Wu
- Translational Medicine Center, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang 310015, P.R. China
| | - Anqian Lu
- Translational Medicine Center, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang 310015, P.R. China
| | - Jin Chen
- Translational Medicine Center, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang 310015, P.R. China
| | - Beibei Xu
- Translational Medicine Center, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang 310015, P.R. China
| | - Junping Shi
- Translational Medicine Center, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang 310015, P.R. China
| | - Jin Yang
- Translational Medicine Center, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang 310015, P.R. China
| |
Collapse
|
9
|
Nagashima A, Higaki T, Koeduka T, Ishigami K, Hosokawa S, Watanabe H, Matsui K, Hasezawa S, Touhara K. Transcriptional regulators involved in responses to volatile organic compounds in plants. J Biol Chem 2019; 294:2256-2266. [PMID: 30593507 PMCID: PMC6378981 DOI: 10.1074/jbc.ra118.005843] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 12/27/2018] [Indexed: 12/20/2022] Open
Abstract
Field studies have shown that plants growing next to herbivore-infested plants acquire higher resistance to herbivore damage. This increased resistance is partly due to regulation of plant gene expression by volatile organic compounds (VOCs) released by plants that sense environmental challenges such as herbivores. The molecular basis for VOC sensing in plants, however, is poorly understood. Here, we report the identification of TOPLESS-like proteins (TPLs) that have VOC-binding activity and are involved in VOC sensing in tobacco. While screening for volatiles that induce stress-responsive gene expression in tobacco BY-2 cells and tobacco plants, we found that some sesquiterpenes induce the expression of stress-responsive genes. These results provided evidence that plants sense these VOCs and motivated us to analyze the mechanisms underlying volatile sensing using tobacco as a model system. Using a pulldown assay with caryophyllene derivative-linked beads, we identified TPLs as transcriptional co-repressors that bind volatile caryophyllene analogs. Overexpression of TPLs in cultured BY-2 cells or tobacco leaves reduced caryophyllene-induced gene expression, indicating that TPLs are involved in the responses to caryophyllene analogs in tobacco. We propose that unlike animals, which use membrane receptors for sensing odorants, a transcriptional co-repressor plays a role in sensing and mediating VOC signals in plant cells.
Collapse
Affiliation(s)
- Ayumi Nagashima
- From the Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences
- the ERATO Touhara Chemosensory Signal Project, Japan Science and Technology Agency (JST), and
| | - Takumi Higaki
- the Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Tokyo 277-8562, Japan
| | - Takao Koeduka
- the Department of Biological Chemistry, Faculty of Agriculture and Division of Agricultural Sciences, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi 753-8515, Japan, and
| | - Ken Ishigami
- From the Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences
| | - Satoko Hosokawa
- From the Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences
| | - Hidenori Watanabe
- From the Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences
| | - Kenji Matsui
- the Department of Biological Chemistry, Faculty of Agriculture and Division of Agricultural Sciences, Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Yamaguchi 753-8515, Japan, and
| | - Seiichiro Hasezawa
- the Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, Tokyo 277-8562, Japan
| | - Kazushige Touhara
- From the Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences,
- the ERATO Touhara Chemosensory Signal Project, Japan Science and Technology Agency (JST), and
- the International Research Center for Neurointelligence (WPI-IRCN), University of Tokyo Institutes for Advanced Study, Tokyo 113-0033, Japan
| |
Collapse
|
10
|
Cariello M, Ducheix S, Maqdasy S, Baron S, Moschetta A, Lobaccaro JMA. LXRs, SHP, and FXR in Prostate Cancer: Enemies or Ménage à Quatre With AR? NUCLEAR RECEPTOR SIGNALING 2018; 15:1550762918801070. [PMID: 30718981 PMCID: PMC6348739 DOI: 10.1177/1550762918801070] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 01/03/2018] [Indexed: 12/11/2022]
Abstract
Androgens and androgen receptor (AR, NR3C4) clearly play a crucial role in
prostate cancer progression. Besides, the link between metabolic disorders and
the risk of developing a prostate cancer has been emerging these last years.
Interestingly, “lipid” nuclear receptors such as LXRα/NR1H3 and LXRβ/NR1H2 (as
well as FXRα/NR1H4 and SHP/NR0B2) have been described to decrease the lipid
metabolism, while AR increases it. Moreover, these former orphan nuclear
receptors can regulate androgen levels and modulate AR activity. Thus, it is not
surprising to find such receptors involved in the physiology of prostate. This
review is focused on the roles of liver X receptors (LXRs), farnesoid X receptor
(FXR), and small heterodimeric partner (SHP) in prostate physiology and their
capabilities to interfere with the androgen-regulated pathways by modulating the
levels of active androgen within the prostate. By the use of prostate cancer
cell lines, mice deficient for these nuclear receptors and human tissue
libraries, several authors have pointed out the putative possibility to
pharmacologically target these receptors. These data open a new field of
research for the development of new drugs that could overcome the castration
resistance in prostate cancer, a usual phenomenon in patients.
Collapse
Affiliation(s)
| | - Simon Ducheix
- Istituto Nazionale Biostrutture e Biosistemi, Roma, Italy
| | - Salwan Maqdasy
- Université Clermont Auvergne, Clermont-Ferrand, France.,Centre de Recherche en Nutrition Humaine d'Auvergne, Clermont-Ferrand, France.,CHU Clermont-Ferrand, France
| | - Silvère Baron
- Université Clermont Auvergne, Clermont-Ferrand, France.,Centre de Recherche en Nutrition Humaine d'Auvergne, Clermont-Ferrand, France
| | - Antonio Moschetta
- "Aldo Moro" University of Bari, Italy.,Istituto Nazionale Biostrutture e Biosistemi, Roma, Italy.,IRCCS Istituto Oncologico "Giovanni Paolo II," Bari, Italy
| | - Jean-Marc A Lobaccaro
- "Aldo Moro" University of Bari, Italy.,Istituto Nazionale Biostrutture e Biosistemi, Roma, Italy.,Université Clermont Auvergne, Clermont-Ferrand, France.,Centre de Recherche en Nutrition Humaine d'Auvergne, Clermont-Ferrand, France
| |
Collapse
|
11
|
Functional assessment of genetic variants located in the promoter of SHP1 (NR0B2). Pharmacogenet Genomics 2018; 27:410-415. [PMID: 28873070 DOI: 10.1097/fpc.0000000000000310] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Small heterodimer partner 1 (SHP1, NR0B2) is a member of the superfamily of nuclear receptors (NRs). Even if this orphan receptor, unlike other NRs, lacks the DNA-binding domain, it is capable of regulating transcription by repressing the activity of other NRs by direct protein-protein interaction. Accordingly, SHP1 is part of negative feedback loops of the transcriptional regulation of genes involved in drug metabolism and various metabolic pathways including bile acid and glucose homeostasis. Although it is known that several interacting partners of SHP1 also modulate its expression, there is little information about genetic variability of this regulatory mechanism. Our study aimed to identify genetic variants in the NR0B2 promoter region and to determine their impact on NR0B2 transcription. For this, DNA samples originating from 119 participants of the population-based cohort Study of Health in Pomerania were analyzed by Sanger sequencing revealing four genetic variants: NR0B2:c.-594T>C (rs71636795), NR0B2:c.-414G>C (newly identified), NR0B2:c.-423C>T (rs78182695), and NR0B2:c.-224delCTGA (rs145613139) localized in the 5' untranslated region of NR0B2. The impact of these variants on transactivation of the NR0B2 promoter by NRs known to be regulators of SHP1 expression (hepatocyte nuclear factor 4α, liver receptor homolog-1, and farnesoid X receptor) was assessed in a cell-based reporter gene assay, showing that transactivation by hepatocyte nuclear factor 4α and liver receptor homolog-1 was significantly decreased in the presence of the genetic variant NR0B2:c.-594T>C, even though this effect was cell specific. However, SHP1 mRNA expression in a small collection of human kidney samples was not affected by these genetic variants.
Collapse
|
12
|
Kudryavtseva AV, Nyushko KM, Zaretsky AR, Shagin DA, Sadritdinova AF, Fedorova MS, Savvateeva MV, Guvatova ZG, Pudova EA, Alekseev BY, Dmitriev AA, Snezhkina AV. Suppression of NR0B2 gene in Clear Cell Renal Cell Carcinoma Is Associated with Hypermethylation of Its Promoter. Mol Biol 2018. [DOI: 10.1134/s0026893318030081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
13
|
Zou A, Magee N, Deng F, Lehn S, Zhong C, Zhang Y. Hepatocyte nuclear receptor SHP suppresses inflammation and fibrosis in a mouse model of nonalcoholic steatohepatitis. J Biol Chem 2018; 293:8656-8671. [PMID: 29666185 DOI: 10.1074/jbc.ra117.001653] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 03/17/2018] [Indexed: 12/12/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a burgeoning health problem worldwide, ranging from nonalcoholic fatty liver (NAFL, steatosis without hepatocellular injury) to the more aggressive nonalcoholic steatohepatitis (NASH, steatosis with ballooning, inflammation, or fibrosis). Although many studies have greatly contributed to the elucidation of NAFLD pathogenesis, the disease progression from NAFL to NASH remains incompletely understood. Nuclear receptor small heterodimer partner (Nr0b2, SHP) is a transcriptional regulator critical for the regulation of bile acid, glucose, and lipid metabolism. Here, we show that SHP levels are decreased in the livers of patients with NASH and in diet-induced mouse NASH. Exposing primary mouse hepatocytes to palmitic acid and lipopolysaccharide in vitro, we demonstrated that the suppression of Shp expression in hepatocytes is due to c-Jun N-terminal kinase (JNK) activation, which stimulates c-Jun-mediated transcriptional repression of Shp Interestingly, in vivo induction of hepatocyte-specific SHP in steatotic mouse liver ameliorated NASH progression by attenuating liver inflammation and fibrosis, but not steatosis. Moreover, a key mechanism linking the anti-inflammatory role of hepatocyte-specific SHP expression to inflammation involved SHP-induced suppression of NF-κB p65-mediated induction of chemokine (C-C motif) ligand 2 (CCL2), which activates macrophage proinflammatory polarization and migration. In summary, our results indicate that a JNK/SHP/NF-κB/CCL2 regulatory network controls communications between hepatocytes and macrophages and contributes to the disease progression from NAFL to NASH. Our findings may benefit the development of new management or prevention strategies for NASH.
Collapse
Affiliation(s)
- An Zou
- From the Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160
| | - Nancy Magee
- From the Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160
| | - Fengyan Deng
- From the Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160
| | - Sarah Lehn
- From the Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160
| | - Cuncong Zhong
- the Department of Electrical Engineering and Computer Science, University of Kansas, Lawrence, Kansas 66045, and
| | - Yuxia Zhang
- From the Department of Pharmacology, Toxicology, and Therapeutics, University of Kansas Medical Center, Kansas City, Kansas 66160, .,the Liver Center, University of Kansas Medical Center, Kansas City, Kansas 66160
| |
Collapse
|
14
|
Miyata M, Shinno K, Kinoshita T, Kinoshita Y, Sugiura Y. Fish oil feeding reverses hepatomegaly and disrupted hepatic function due to the lack of FXR signaling. J Toxicol Sci 2018; 42:671-681. [PMID: 29142166 DOI: 10.2131/jts.42.671] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Mice lacking farnesoid X receptor (FXR) are used as a model for nonalcoholic fatty liver disease because their livers exhibit hepatomegaly, hepatic steatosis, and hepatic inflammation. The influence of fish oil feeding on hepatomegaly and disrupted hepatic function was investigated using female Fxr-null mice and wild-type mice fed a fish oil diet (2% fish oil and 2% corn oil) or a control diet (4% corn oil) for 4 weeks. Hepatic n-3 polyunsaturated fatty acid (PUFA) levels, including 22:6 n-3 docosahexaenoic acid (DHA) and 20:5 n-3 eicosapentaenoic acid (EPA) were significantly higher in the fish oil group than those in the control group of Fxr-null mice and wild-type mice. Fxr-null mouse livers of the control group showed a whitish brown coloration, whereas Fxr-null mouse livers of the fish oil group showed a dark brown coloration similar to that of wild-type mice. The liver in Fxr-null mice of the fish oil group was smaller than that of the control group. There was a significant decrease in the levels of hepatic damage-associated diagnostic markers, hepatic and serum bile acids, triglycerides, free fatty acids, and total cholesterol levels in Fxr-null mice because of fish oil feeding. It also reversed elevated mRNA levels of oxidative stress-related genes (Hmox1, Gsta1, and Gsta2) and reduced mRNA levels of transcriptional factors (Pparα and Shp) in Fxr-null mice. These results suggest that fish oil feeding reverses hepatomegaly and disrupted hepatic function due to the lack of FXR signaling.
Collapse
Affiliation(s)
- Masaaki Miyata
- Department of Food Science and Technology, National Fisheries University
| | - Kouhei Shinno
- Department of Food Science and Technology, National Fisheries University
| | - Tomoki Kinoshita
- Department of Food Science and Technology, National Fisheries University
| | - Yuichi Kinoshita
- Department of Food Science and Technology, National Fisheries University
| | - Yoshimasa Sugiura
- Department of Food Science and Technology, National Fisheries University
| |
Collapse
|
15
|
Cuomo D, Porreca I, Cobellis G, Tarallo R, Nassa G, Falco G, Nardone A, Rizzo F, Mallardo M, Ambrosino C. Carcinogenic risk and Bisphenol A exposure: A focus on molecular aspects in endoderm derived glands. Mol Cell Endocrinol 2017; 457:20-34. [PMID: 28111205 DOI: 10.1016/j.mce.2017.01.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 01/16/2017] [Accepted: 01/17/2017] [Indexed: 02/07/2023]
Abstract
Epidemiological and experimental evidence associates the exposure to Bisphenol A with the increase of cancer risk in several organs, including prostate. BPA targets different pathways involved in carcinogenicity including the Nuclear Receptors (i.e. estrogen and androgen receptors), stress regulated proteins and, finally, epigenetic changes. Here, we analyse BPA-dependent carcinogenesis in endoderm-derived glands, thyroid, liver, pancreas and prostate focusing on cell signalling, DNA damage repair pathways and epigenetic modifications. Mainly, we gather molecular data evidencing harmful effects at doses relevant for human risk (low-doses). Since few molecular data are available, above all for the pancreas, we analysed transcriptomic data generated in our laboratory to suggest possible mechanisms of BPA carcinogenicity in endoderm-derived glands, discussing the role of nuclear receptors and stress/NF-kB pathways. We evidence that an in vitro toxicogenomic approach might suggest mechanisms of toxicity applicable to cells having the same developmental origin. Although we cannot draw firm conclusions, published data summarized in this review suggest that exposure to BPA, primarily during the developmental stages, represents a risk for carcinogenesis of endoderm-derived glands.
Collapse
Affiliation(s)
- Danila Cuomo
- IRGS, Biogem, Via Camporeale, 83031 Ariano Irpino, Avellino, Italy; Department of Science and Technology, University of Sannio, via Port'Arsa 11, 82100 Benevento, Italy
| | | | - Gilda Cobellis
- Department of Experimental Medicine, Sez. Bozzatti, II University of Naples, 80138 Napoli, Italy
| | - Roberta Tarallo
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana", University of Salerno, 84081 Baronissi, SA, Italy
| | - Giovanni Nassa
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana", University of Salerno, 84081 Baronissi, SA, Italy; Genomix4Life srl, Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana", University of Salerno, Baronissi, SA, Italy
| | - Geppino Falco
- Department of Biology, University of Naples "Federico II", Napoli, Italy
| | - Antonio Nardone
- Department of Public Health, University of Naples "Federico II", Napoli, Italy
| | - Francesca Rizzo
- Laboratory of Molecular Medicine and Genomics, Department of Medicine, Surgery and Dentistry "Schola Medica Salernitana", University of Salerno, 84081 Baronissi, SA, Italy
| | - Massimo Mallardo
- Molecular Medicine and Medical Biotechnologies, University of Naples "Federico II", Napoli, Italy
| | - Concetta Ambrosino
- Department of Science and Technology, University of Sannio, via Port'Arsa 11, 82100 Benevento, Italy.
| |
Collapse
|
16
|
Di Ciaula A, Wang DQH, Molina-Molina E, Lunardi Baccetto R, Calamita G, Palmieri VO, Portincasa P. Bile Acids and Cancer: Direct and Environmental-Dependent Effects. Ann Hepatol 2017; 16:s87-s105. [PMID: 29080344 DOI: 10.5604/01.3001.0010.5501] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 09/06/2017] [Indexed: 02/05/2023]
Abstract
Bile acids (BAs) regulate the absorption of fat-soluble vitamins, cholesterol and lipids but have also a key role as singalling molecules and in the modulation of epithelial cell proliferation, gene expression and metabolism. These homeostatic pathways, when disrupted, are able to promote local inflammation, systemic metabolic disorders and, ultimately, cancer. The effect of hydrophobic BAs, in particular, can be linked with cancer in several digestive (mainly oesophagus, stomach, liver, pancreas, biliary tract, colon) and extra-digestive organs (i.e. prostate, breast) through a complex series of mechanisms including direct oxidative stress with DNA damage, apoptosis, epigenetic factors regulating gene expression, reduced/increased expression of nuclear receptors (mainly farnesoid X receptor, FXR) and altered composition of gut microbiota, also acting as a common interface between environmental factors (including diet, lifestyle, exposure to toxics) and the molecular events promoting cancerogenesis. Primary prevention strategies (i.e. changes in dietary habits and lifestyle, reduced exposure to environmental toxics) mainly able to modulate gut microbiota and the epigenome, and the therapeutic use of hydrophilic BAs to counterbalance the negative effects of the more hydrophobic BAs might be, in the near future, part of useful tools for cancer prevention and management.
Collapse
Affiliation(s)
| | - David Q-H Wang
- Department of Medicine, Division of Gastroenterology and Liver Diseases, Marion Bessin Liver Research Center, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Emilio Molina-Molina
- Clinica Medica "A. Murri", Department of Biomedical Sciences & Human Oncology, University of Bari Medical School, Bari, Italy
| | - Raquel Lunardi Baccetto
- Clinica Medica "A. Murri", Department of Biomedical Sciences & Human Oncology, University of Bari Medical School, Bari, Italy
| | - Giuseppe Calamita
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari. Italy
| | - Vincenzo O Palmieri
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari. Italy
| | - Piero Portincasa
- Clinica Medica "A. Murri", Department of Biomedical Sciences & Human Oncology, University of Bari Medical School, Bari, Italy
| |
Collapse
|
17
|
Maguire M, Bushkofsky JR, Larsen MC, Foong YH, Tanumihardjo SA, Jefcoate CR. Diet-dependent retinoid effects on liver gene expression include stellate and inflammation markers and parallel effects of the nuclear repressor Shp. J Nutr Biochem 2017; 47:63-74. [PMID: 28570941 DOI: 10.1016/j.jnutbio.2017.04.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 03/24/2017] [Accepted: 04/12/2017] [Indexed: 02/06/2023]
Abstract
For mice, a maternal vitamin A (VA)-deficient diet initiated from midgestation (GVAD) produces serum retinol deficiency in mature offspring. We hypothesize that the effects of GVAD arise from preweaning developmental changes. We compare the effect of this GVAD protocol in combination with a postweaning high-fat diet (HFD) or high-carbohydrate diet (LF12). Each is compared to an equivalent VA-sufficient combination. GVAD extensively decreased serum retinol and liver retinol, retinyl esters, and retinoid homeostasis genes (Lrat, Cyp26b1 and Cyp26a1). These suppressions were each more effective with LF12 than with HFD. Postweaning initiation of VA deficiency with LF12 depleted liver retinoids, but serum retinol was unaffected. Liver retinoid depletion, therefore, precedes serum attenuation. Maternal LF12 decreased the obesity response to the HFD, which was further decreased by GVAD. LF12 fed to the mother and offspring extensively stimulated genes marking stellate activation (Col1a1, Timp2 and Cyp1b1) and novel inflammation markers (Ly6d, Trem2 and Nupr1). The GVAD with LF12 diet combination suppressed these responses. GVAD in combination with the HFD increased these same clusters. A further set of expression differences on the HFD when compared to a high-carbohydrate diet was prevented when GVAD was combined with HFD. Most of these GVAD gene changes match published effects from deletion of Nr0b2/Shp, a retinoid-responsive, nuclear co-repressor that modulates metabolic homeostasis. The stellate and inflammatory increases seen with the high-carbohydrate LF12 diet may represent postprandial responses. They depend on retinol and Shp, but the regulation reverses with an HFD.
Collapse
Affiliation(s)
- Meghan Maguire
- Endocrinology and Reproductive Physiology Program, University of Wisconsin-Madison, Madison, WI 53705; Department of Cell and Regenerative Biology, University of Wisconsin-Madison, Madison, WI 53705
| | - Justin R Bushkofsky
- Endocrinology and Reproductive Physiology Program, University of Wisconsin-Madison, Madison, WI 53705
| | | | - Yee Hoon Foong
- Endocrinology and Reproductive Physiology Program, University of Wisconsin-Madison, Madison, WI 53705
| | - Sherry A Tanumihardjo
- Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, WI 53705
| | - Colin R Jefcoate
- Endocrinology and Reproductive Physiology Program, University of Wisconsin-Madison, Madison, WI 53705; Department of Cell and Regenerative Biology, University of Wisconsin-Madison, Madison, WI 53705.
| |
Collapse
|
18
|
Pavek P. Pregnane X Receptor (PXR)-Mediated Gene Repression and Cross-Talk of PXR with Other Nuclear Receptors via Coactivator Interactions. Front Pharmacol 2016; 7:456. [PMID: 27932985 PMCID: PMC5122737 DOI: 10.3389/fphar.2016.00456] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 11/14/2016] [Indexed: 12/13/2022] Open
Abstract
Pregnane X receptor is a ligand-activated nuclear receptor (NR) that mainly controls inducible expression of xenobiotics handling genes including biotransformation enzymes and drug transporters. Nowadays it is clear that PXR is also involved in regulation of intermediate metabolism through trans-activation and trans-repression of genes controlling glucose, lipid, cholesterol, bile acid, and bilirubin homeostasis. In these processes PXR cross-talks with other NRs. Accumulating evidence suggests that the cross-talk is often mediated by competing for common coactivators or by disruption of coactivation and activity of other transcription factors by the ligand-activated PXR. In this respect mainly PXR-CAR and PXR-HNF4α interference have been reported and several cytochrome P450 enzymes (such as CYP7A1 and CYP8B1), phase II enzymes (SULT1E1, Gsta2, Ugt1a1), drug and endobiotic transporters (OCT1, Mrp2, Mrp3, Oatp1a, and Oatp4) as well as intermediate metabolism enzymes (PEPCK1 and G6Pase) have been shown as down-regulated genes after PXR activation. In this review, I summarize our current knowledge of PXR-mediated repression and coactivation interference in PXR-controlled gene expression regulation.
Collapse
Affiliation(s)
- Petr Pavek
- Department of Pharmacology and Toxicology and Centre for Drug Development, Faculty of Pharmacy in Hradec Kralove, Charles University in Prague Hradec Kralove, Czechia
| |
Collapse
|
19
|
Alexandre PA, Kogelman LJA, Santana MHA, Passarelli D, Pulz LH, Fantinato-Neto P, Silva PL, Leme PR, Strefezzi RF, Coutinho LL, Ferraz JBS, Eler JP, Kadarmideen HN, Fukumasu H. Liver transcriptomic networks reveal main biological processes associated with feed efficiency in beef cattle. BMC Genomics 2015; 16:1073. [PMID: 26678995 PMCID: PMC4683712 DOI: 10.1186/s12864-015-2292-8] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 12/14/2015] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The selection of beef cattle for feed efficiency (FE) traits is very important not only for productive and economic efficiency but also for reduced environmental impact of livestock. Considering that FE is multifactorial and expensive to measure, the aim of this study was to identify biological functions and regulatory genes associated with this phenotype. RESULTS Eight genes were differentially expressed between high and low feed efficient animals (HFE and LFE, respectively). Co-expression analyses identified 34 gene modules of which 4 were strongly associated with FE traits. They were mainly enriched for inflammatory response or inflammation-related terms. We also identified 463 differentially co-expressed genes which were functionally enriched for immune response and lipid metabolism. A total of 8 key regulators of gene expression profiles affecting FE were found. The LFE animals had higher feed intake and increased subcutaneous and visceral fat deposition. In addition, LFE animals showed higher levels of serum cholesterol and liver injury biomarker GGT. Histopathology of the liver showed higher percentage of periportal inflammation with mononuclear infiltrate. CONCLUSION Liver transcriptomic network analysis coupled with other results demonstrated that LFE animals present altered lipid metabolism and increased hepatic periportal lesions associated with an inflammatory response composed mainly by mononuclear cells. We are now focusing to identify the causes of increased liver lesions in LFE animals.
Collapse
Affiliation(s)
- Pamela A Alexandre
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, São Paulo, 13635-900, Brazil. .,Department of Veterinary Clinical and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Lisette J A Kogelman
- Department of Veterinary Clinical and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Miguel H A Santana
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, São Paulo, 13635-900, Brazil.
| | - Danielle Passarelli
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, São Paulo, 13635-900, Brazil.
| | - Lidia H Pulz
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, São Paulo, 13635-900, Brazil.
| | - Paulo Fantinato-Neto
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, São Paulo, 13635-900, Brazil.
| | - Paulo L Silva
- Department of Animal Sciences, School of Animal Science and Food Engineering, University of São Paulo, Pirassunung, Sao Paulo, Brazil.
| | - Paulo R Leme
- Department of Animal Sciences, School of Animal Science and Food Engineering, University of São Paulo, Pirassunung, Sao Paulo, Brazil.
| | - Ricardo F Strefezzi
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, São Paulo, 13635-900, Brazil.
| | - Luiz L Coutinho
- Department of Animal Sciences, ESALQ, University of Sao Paulo, Piracicaba, Sao Paulo, Brazil.
| | - José B S Ferraz
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, São Paulo, 13635-900, Brazil.
| | - Joanie P Eler
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, São Paulo, 13635-900, Brazil.
| | - Haja N Kadarmideen
- Department of Veterinary Clinical and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Heidge Fukumasu
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of Sao Paulo, Av. Duque de Caxias Norte, 225, Pirassununga, São Paulo, 13635-900, Brazil.
| |
Collapse
|