SET-ting the Stage for SREBP Dependent Regulation of Lipid Metabolism

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2 SET-ting the Stage for SREBP Dependent Regulation of Lipid Metabolism

3 SET-ting the Stage for SREBP Dependent Regulation of Lipid Metabolism Sterol Regulatory Element Binding Proteins (SREBPs)

4 relative mrna relative mrna Rel. Exp. Hepatic SET-Domain SETDB2 proteins is Increased with Fasting Males (6weeks) 8 Males (6weeks) 6 * SETDB2 Fed Fast 8 6 SETDB2 4 2 Fed Fast *p-value < Liver Kidney Heart Adipose 0 Liver Kidney Heart Adipose Low High Fed Fast

5 SET-Domain proteins SETDB2 SET domain family of methyltransferases (50 total) Most similar to known histone H3K9 Me Enzymes Also called--clld8 or KMT1F Fly Orthologue is eggless (pachytene cytoplasm)

6 Rel. Exp. relative mrna Rel. Exp. relative mrna SETDB2 mrna and Protein in MPH SET-Domain proteins Selective Induction by Glucocorticoids Setdb2 may be esse MPH% shcontrol%shsetdb2 $$/$$$$$$$$+$$$$$$$/$$$$$$$$+$$$$ G6pase G6Pase (MPH) Setdb2 (MPH) Setdb2 - + DEX Setdb2 GR SP1 0 Control Isoproterenol Forskolin Dexamethasone Insulin Glucagon 0 Control Isoproterenol Forskolin Dexamethasone Glucagon Insulin

7 relative mrna Rel. Exp. relative mrna Dexamethasone+upregulates+hepa6c+Setdb2+in#viv SETDB2 mrna and Protein In Vivo SET-Domain proteins Induction by Glucocorticoids Setdb2+(liver)+ 15 Setdb2 RNA (Liver) 20 Protein Nuclear+ Cytoplasm Con. PBS+ DEX+ SETDB2 PBS+ DEX 5 5 YY1 0 0 PBS PBS DEX Dex Pending:+ in#vivo#

8 % of cells S phase DEX D SET-Domain proteins SETDB2 Diverse Roles in Physiology es SETDB2 U1C Liver Damage GR Signaling Laminopathies SETDB S Cell Cycle KO U1C/Splcing Hr. WT

9 SET-Domain proteins Setdb2 Overexpression In Vivo: Hepatic Fibrosis GFP msetdb2 msetdb2 GFP msetdb2 msetdb2

10 Setdb2 Overexpression Increases Hepatic Pro-Fibrotic Genes relative mrna Rel. Exp. relative mrna Rel. Exp. 10 TGFB3 TGF-β3 8 Col1a1 Col1A Ad-GFP Ad-mSetdb2 0 Ad-GFP Ad-mSetdb2

11 relative mrna Rel. Exp. Setdb2 Knockdown Decreases Hepatic Pro- Fibrotic Genes Rel. Exp. relative mrna relative mrna Rel. Exp. 1.5 Liver CCl4(48hrs) Setbdb2 1.5 TGFB3 TGF-β3 1.5 Col1a1 Col1A shcontrol shsetdb Setdb2 0.0 Cyp2b10 SH-Ctrl SH-mSetdb2 0.0 SH-Ctrl SH-mSetdb2

12 relative mrna Rel. Exp. Setdb2 Knockdown Attenuates CCl 4 Driven Liver Damage shsetdb2 shcontrol 1.5 Liver CCl4(48hrs) Setbdb2 OIL CCl 4 (48hrs) 1.0 shcontrol shsetdb2 0.5 * 0.0 Setdb2 Cyp2b10 *p-value<0.05

13 shsetdb2 shcontrol Setdb2 Knockdown Attenuates CCl 4 Driven Liver Damage shcontrol shsetdb2 OIL CCl 4 (48hrs) OIL CCl 4 (48hrs) H/E TUNNEL 100 μ

14 ALT activity (nmol/min/ml) nm/min/ml Setdb2 Knockdown Attenuates CCl 4 Driven Liver Damage ugtg/mg ug/mg tissue 250 ALT Serum ALT 40 TG Liver TAG GFP OIL SH * GFP SH CCl GFP OIL SH * GFP SH CCl4 Oil CCl 4 Oil CCl 4 *p <0.05

15 APAP Saline SETDB2 Knockdown Attenuates APAP-Liver Damage shcontrol shsetdb2 APAP-acetaminophen

16 Elevated SETDB2 mrna in Human Fibrosis * *n=6-10, p<0.05 Karine Clement

17 Elevated Nuclear SETDB2 in Human Steatosis/NASH osis y liver, no 1446 liver NASH damage with Significant Fibrosis 1784 NASH Fibrosis with light 1516 fibrosis Steatosis Control SETDB2 Steatosis with light 1517 fibrosis Healthy liver, no liver 1446 damage NASH with Significant 1784 Fibrosis NASH with Fibrosis light fibrosis 1516 Ste Nuclei SETDB2 staining NASH NASH 1517 Healthy liver, no liver damage 1784 NA

18 NIH-PA Author Manuscript NIH-PA Author Manuscript NIH-PA Aut Author Manuscript Biochem Biophys Res Commun. Author manuscript; available in PMC 2011 July 1. Glucocorticoids Published in final edited form as: and Drug-Induced Liver Injury Biochem Biophys Res Commun July 2; 397(3): doi: /j.bbrc Pathologic Role of Stressed-Induced Glucocorticoids in Drug- Induced Liver Injury in Mice Mary Jane Masson, Lindsay A. Collins, Leah D. Carpenter, Mary L. Graf, Pauline M. Ryan, Mohammed Bourdi, and Lance R. Pohl Molecular and Cellular Toxicology Section, Laboratory of Molecular Immunology, National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, MD 20892, USA Mary Jane Masson: Lindsay A. Collins: Leah D. Carpenter: Endogenous glucocorticoids Mary L. play Graf: a role in acetaminophen-induced Pauline M. Ryan: Mohammed liver injury Bourdi: (AILI); Lance R. Pohl: dexamethasone worsens AILI and RU486 pretreatment attenuates damage. (Masson, 2010) Abstract We previously reported that acetaminophen (APAP)-induced liver injury (AILI) in mice is associated with a rise in serum levels of the glucocorticoid (GC), corticosterone. In the current study, we provide evidence that endogenous GC play a pathologic role in AILI. Specifically, pretreatment of mice with the GC receptor (GCR) inhibitor, RU486 (mifepristrone), protected normal but not adrenalectomized mice from AILI, while pretreatment with dexamethasone, a synthetic GC, exacerbated AILI. RU486 did not affect the depletion of whole liver reduced GSH or the formation of APAP-protein adducts. It also had no effects on the formation of reactive oxygen species or the depletion of mitochondrial GSH or ATP. While RU486 pretreatment also protected against halothane-induced liver injury, it exacerbated concanavalin A (ConA)- and Prednisolone carbon tetrachloride exacerbates (CCl 4 )-induced acetaminophen, liver injury, demonstrating ethanol, the complexity and CCl of GC 4 - mediated effects in liver injury and different delays types of tissue liver injury. repair Conclusion: (Kwon, These 2014). results suggest that under certain conditions, elevated levels of GC might represent a previously unappreciated risk factor for liver injury caused by APAP and other drugs through the diverse biological processes regulated by GCR. Keywords Drug-induced liver injury; stress; RU486; acetaminophen; halothane INTRODUCTION Drug-induced liver injury (DILI) is a serious health problem that accounts for over 50% of the cases of acute liver failure in the United States [1]. While the occurrence of DILI is quite high due to the estimated >1000 drugs that have been associated with liver injury [ 2], with

19 DEX DMSO SETDB2 SET-Domain Knockdown proteins in Mouse Primary Hepatocytes shcontrol shsetdb2 SETDB2 Nuclei

20 DEX DMSO SETDB2 SET-Domain Knockdown proteins in Mouse Primary Hepatocytes shcontrol shsetdb2 SETDB2 Nuclei SETDB2 Knockdown blunts induction of GR target genes

21 DEX DMSO SETDB2 SET-Domain Knockdown proteins in Mouse Primary Hepatocytes shcontrol shsetdb2 SETDB2 Nuclei Select SETDB2 Knockdown blunts induction of GR target genes

22 Critical Role for Insig in SREBP Regulation ER C N INSIG SCAP SREBP Golgi C N S2P S1P N N N Nucleus SRE

23 Two Promoters for Insig2 ProA ProB E1a E1b ATG E2 E1a E2 Insig2a Tissue Restricted Inducible E1b E2 Insig2b Constitutive

24 relative mrna relative mrna Dex. Induction of Insig2a Requires SETDB Liver Liver-Insig2a PBS Dex shdb2-dex Primary MPH-Insig2a Hepatocytes PBS shdb2 PBS Dex Insulin

25 Would Dex. Blunt Feeding Induction of SREBPs In Vivo? Fast Refeed +/- Dex

26 mrna Dex. Blunts Glucocorticoids Feeding Dependent increase INSIG2 Induction and of decrease SREBP Nuclear targets SREBP in REFED livers Lane N-SREBP-1 N-SREBP-2 pgr Fasted Vehicle Vehicle Refed Dexamethasone GR YY Fast+Vehicle Refed+Vehicle Refed+DEX

27 SET-Domain Ob/Ob proteins Mouse Model

28 SET-Domain proteins Ob/Ob Mouse Model Leptin deficiency Zhang et al. Nature 1994 Hyperphagic, obese, fatty liver, insulin resistant Jeanreneaud Ann. Nutr. Ail Elevated hepatic TG synthesis (high SREBP-1c) Shimomura et al. J. Biol. Chem Elevated circulating glucocorticoids Liu et al. Diabetes 2003 Decreased hepatic 11b-HSD1 Liu et al. Diabetes 2003 Hepatic GC resistance??? Blake and Broner BBRC 1970 (TAT deficient)

29 SET-Domain proteins Dex. Normalizes SREBP-1c in Ob/Ob Mice Glucocorticoids increase Insig2a and decrease SREBP processing in Ob/Ob liver Vehicle Dex. DEX injection at ZT=12 and tissue harvest at ZT=0 Next: Does SETDB2 or GR knockdown interfere with DEXmediated inhibition of SREBP processing in Ob/Ob? DEX injection at ZT=12 and tissue harvest at ZT=0 M 08 Next: Does SETDB2 or GR knockdown interfere with DEXmediated inhibition of SREBP processing in Ob/Ob?

30 SETDB2 Connects GR to SREBP and Liver Lipid Metabolism GR SETDB2 is induced by GR in Liver (fasting) Interacts with GR complex, affects GR location/stability SETDB2 is increased during liver damage (CCl 4, APAP) Attenuated by SETDB2 knockdown---nash target SETDB2 and GR regulate Insig 2 expression Explains fasting and circadian regulation of Insig 2: Connects GR/SETDB2 to the SREBP pathway and lipid metabolism Dexamethasone decreases SREBP-1c in Ob/Ob mice Ob/Ob display hepatic glucocoriticoid resistance

31 Manuel Roqueta-Rivera Sepideh Khorasanizadeh SBMRI Xiaoman Li UCF Or Gozani Stanford Ben Garcia U. Penn Fabienne Foufelle U. Pierre et Marie Curie SBMRI Cores: Analytical Genomics Bioinformatics Imaging Histology Proteomics CPCCG/Chemical Genomics Stefan Herzig Heidelberg

32 SETDB2 Knockdown Blunts Dex. Induction of Select GR SET-Domain proteins targets (of metabolic stress) Mouse Primary Hepatocytes Nuclear Lysate shctrl shdb2 SETDB2 bactin Gene Symbol %decreased Fmo Fam107a 88 Tat 87 Cyp2b Setdb Igfbp Insig2 66 Lipin 57.5 Ppargc1a 57 Tgfb Nrc3c1 (Gr) 55

33 SETDB2 interacts with GR SET-Domain proteins Co-IP of endogenous proteins SETDB2-GR co-ip Input IgG SETDB DEX GR

34 SET-Domain proteins SET Domain Protein Classification SETDB2, methyltransferase; Most similar to known histone H3K9 Me3 Enzymes (H3K9Me3); AKA--CLLD8 and KMT1F Orthologue (?) of fly eggless (pachytene cytoplasm) Glaser (2006),Development 133,

35 Elevated Nuclear SETDB2 in Human Fibrosis/NASH Healthy NASH liver, with no Significant liver damage Fibrosis Fibrosis NASH Steatosis with light fibrosis 1516 Steatosis 1517 Healthy liver, no liver damage 1784 NASH with light fibrosis 1784 NASH with light fibrosis SETDB2 staining 1446 NASH with Significant Fibrosis Fibrosis 151 SETDB2 staining SETDB2 staining 1517 Healthy liver, no liver damage

36 SETDB2 interacts with GR SET-Domain proteins Co-IP of endogenous proteins SETDB2-GR co-ip Input IgG SETDB DEX GR SETDB2 Genome-Wide Localization?

37 SETDB2 ChIP-Seq Analysis SET-Domain proteins Genome Distribution 22,129 peaks, million reads 90-95% mapped Shawn Li, Jun Ding UCF

38 Homer de novo Motif Results SETDB2 Gene Ontology Enrichment ChIP-Seq Results Analysis SET-Domain proteins Known Motif Enrichment Results (txt file) Total Target Sequences Enriched = 15498, Total Background Motifs Sequences = Rank Motif Homer Known Motif Enrichment Results (SETDB2/) 1 HNF6 10% Homer de novo Motif Results Gene Ontology Enrichment Results 2Known Motif Enrichment Results (txt file) Total Target Sequences = 15498, Total Background Sequences = Rank Motif 41 GR half site 5.7% CEBPb 5% 74 Stat6, MafA, MafF, MafK, PAX7, FOXA2, RXR, PDX1 85

39 SETDB2 ChIP-Seq Analysis SET-Domain proteins Overlap with HNF6 and GR SETDB2 (22129) D B A C GR (41128) HNF6 (89533) A= 864 overlappping peaks for all three proteins

40 SET-Domain proteins Hepatic SETDB2, GR, and HNF6?? HNF6 GR Cell Cycle Proliferation Fibrosis Inflammation Carcinogenesis Differentiation Lipid Metabolism Organogenesis Cell Migration Cell-matrix adhesion Glucose Metabolism Bile Transport

41 ug/mg tissue Rel. RNA relative mrna Rel. RNA relative mrna Rel. RNA relative mrna Rel. RNA relative mrna SETDB2 Knockdown In Vivo SREBP Target Gene Expression Liver TAG Scd1 Setdb2 Insig2a 5.05 Scd1 Hmgcr 1.5 * 2.0 * * 1 * shctrl shdb2 0.0 shctrl shdb2 0 shctrl shdb2 0.0 shctrl shdb2 15 Liver TG *p< # 5 0 shctrl shdb2 # p=0.004

42 Dex. Blunts Feeding Dependent Induction of SREBP Target Genes relative mrna Fast+Vehicle Refed+Vehicle Refed+DEX Insig1 Insig2a Hmgcr Fasn G6pc

43 Does Dex. Inhibition of SREBPs In Vivo Require SETDB2 and Insig2 and GR? sh-setdb2 sh-gr sh-insig2 7 days Fast Refeed +/- Dex

44 SETDB2 is Required for Dex. Inhibition of Nuclear SREBP Accumulation Refed DEX + Ad-shSetdb2 SETDB2 SREBP-1 SREBP-2 pgr (ser211) GR YY1 pooled n=5

45 Mem. Nuclear Dex. Inhibition of SREBP Requires SETDB2 and INSIG DEX (10mg/kg) SREBP1 pgr SETDB2 YY1 INSIG2 CALNEXIN Refed 8hr pooled n=5

46 relative mrna relative mrna relative mrna GR is Required for Dex. Srebp1c Induction of Insig2a in 5 Primary Hepatocytes Nr3c1 1 0 shctrl shgr DMSO DEX Insig2a shctrl shgr 0 shctrl shgr DMSO DEX DMSO DEX

47 SETDB2 and GR at the Insig2 Locus GR (DEX) GR (Vehicle) Setdb2 (DEX) Setdb2 (Input) DNAse (DEX) DNAse (Vehicle) Insig2 ProA ProB E1a E1b ATG E2

48 SETDB2 and GR at the Insig2 Locus GR (DEX) GR (Vehicle) Setdb2 (DEX) Setdb2 (Input) DNAse (DEX) DNAse (Vehicle) Insig2 ProA ProA E1a E1b ATG E2

49 %input %input SETDB2 and GR at the Insig2 Locus GR (DEX) GR (Vehicle) Setdb2 (DEX) Setdb2 (Input) DNAse (DEX) DNAse (Vehicle) IgG IgG IgG kb) SETDB2 GR GR kb) on1) shctrl+pbs shctrl+pbs shctrl+dex shctrl+dex shdb2+dex shdb2+dex shgr+dex shgr+dex on2) 3kb) n1) n2) kb) IgG IgG SETDB2.6kb) SETD on1)

50 %input %input %input %input %input SETDB2, GR and HNF6 at Insig 2 Locus IgG Reciprocal Binding by Dex. Insig2 (-1.6kb) H3K9me2 H3K9me2 GR SETDB2 HNF6 IgG GR SETDB2 HNF6 1.5 REFED DEX IgG Refed Dex. REFED REFED DEX DEX IgG IgG Tat Tat Insig H3K9 me2 Insig2 Cyp2b10 IgG Fasn Cyp2b10 Tat IgG H3K9me3 REFED DEX Fasn REFED DEX IgG H3K9 me3 Tat Insig2 Insig Cyp2b10 ProA ProB E1a E1b ATG E2 GR/SETDB2/ HNF6

51 % of cells S phase DEX D SET-Domain proteins SETDB2 Diverse Roles in Physiology es SETDB2 U1C Liver Damage GR Signaling Laminopathies SETDB S Cell Cycle KO U1C/Splcing Hr. WT

52 relative mrna Total Mem. Cyto p GR Regulates Circadian Expression ZT=0 of Hepatic ZT=12 Insig2a shctrl shgr shctrl shgr Insig2a ZT=0 1 2 ZT= ZT=0 ZT=12 shctrl shgr Membrane Nuclear shctrl shgr GR b-actin Insig2 Calnexin ZT=0; Dark to light NEXT:&GR&PTM&(lysine&acetyla5on&and&methyla5on)&and&SETDB2&knockdown G S G b In Ca

53 SREBPs Integrate Chronic Control (Gene Expression) with Acute Pathway Regulation (Enzyme Activity) Acetyl CoA HMGCR Mevalonate Long term control of enzyme synthesis ER C N INSIG SCAP SREBP Squalene Golgi C N S2P Rapid control of enzyme activity Cholesterol SCC N S1P Nucleus Cortisol

18s AAACGGCTACCACATCCAAG CCTCCAATGGATCCTCGTTA. 36b4 GTTCTTGCCCATCAGCACC AGATGCAGCAGATCCGCAT. Acc1 AGCAGATCCGCAGCTTG ACCTCTGCTCGCTGAGTGC

18s AAACGGCTACCACATCCAAG CCTCCAATGGATCCTCGTTA. 36b4 GTTCTTGCCCATCAGCACC AGATGCAGCAGATCCGCAT. Acc1 AGCAGATCCGCAGCTTG ACCTCTGCTCGCTGAGTGC Supplementary Table 1. Quantitative PCR primer sequences Gene symbol Sequences (5 to 3 ) Forward Reverse 18s AAACGGCTACCACATCCAAG CCTCCAATGGATCCTCGTTA 36b4 GTTCTTGCCCATCAGCACC AGATGCAGCAGATCCGCAT Acc1

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