PMID- 29724730 OWN - NLM STAT- MEDLINE DCOM- 20190805 LR - 20200701 IS - 1468-2060 (Electronic) IS - 0003-4967 (Print) IS - 0003-4967 (Linking) VI - 77 IP - 8 DP - 2018 Aug TI - Metabolic pathways and immunometabolism in rare kidney diseases. PG - 1226-1233 LID - 10.1136/annrheumdis-2017-212935 [doi] AB - OBJECTIVES: To characterise renal tissue metabolic pathway gene expression in different forms of glomerulonephritis. METHODS: Patients with nephrotic syndrome (NS), antineutrophil cytoplasmic antibody-associated vasculitis (AAV), systemic lupus erythematosus (SLE) and healthy living donors (LD) were studied. Clinically indicated renal biopsies were obtained at time of diagnosis and microdissected into glomerular and tubulointerstitial compartments. Microarray-derived differential gene expression of 88 genes representing critical enzymes of metabolic pathways and 25 genes related to immune cell markers was compared between disease groups. Correlation analyses measured relationships between metabolic pathways, kidney function and cytokine production. RESULTS: Reduced steady state levels of mRNA species were enriched in pathways of oxidative phosphorylation and increased in the pentose phosphate pathway (PPP) with maximal perturbation in AAV and SLE followed by NS, and least in LD. Transcript regulation was isozymes specific with robust regulation in hexokinases, enolases and glucose transporters. Intercorrelation networks were observed between enzymes of the PPP (eg, transketolase) and macrophage markers (eg, CD68) (r=0.49, p<0.01). Increased PPP transcript levels were associated with reduced glomerular filtration rate in the glomerular (r=-0.49, p<0.01) and tubulointerstitial (r=-0.41, p<0.01) compartments. PPP expression and tumour necrosis factor activation were tightly co-expressed (r=0.70, p<0.01). CONCLUSION: This study demonstrated concordant alterations of the renal transcriptome consistent with metabolic reprogramming across different forms of glomerulonephritis. Activation of the PPP was tightly linked with intrarenal macrophage marker expression, reduced kidney function and increased production of cytokines. Modulation of glucose metabolism may offer novel immune-modulatory therapeutic approaches in rare kidney diseases. CI - (c) Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted. FAU - Grayson, Peter C AU - Grayson PC AD - Vasculitis Translational Research Program, Systemic Autoimmunity Branch, National Institutes of Health/NIAMS, Bethesda, Maryland, USA. AD - Vasculitis Clinical Research Consortium, Philadelphia, Pennsylvania, USA. FAU - Eddy, Sean AU - Eddy S AD - Division of Nephrology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA. AD - Nephrotic Syndrome Study Network Consortia, Ann Arbor, Michigan, USA. FAU - Taroni, Jaclyn N AU - Taroni JN AD - Vasculitis Clinical Research Consortium, Philadelphia, Pennsylvania, USA. AD - Department of Systems Pharmacology and Translational Therapeutics, Institute for Translational Medicine and Therapeutics, Institute for Biomedical Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Lightfoot, Yaima L AU - Lightfoot YL AD - Vasculitis Translational Research Program, Systemic Autoimmunity Branch, National Institutes of Health/NIAMS, Bethesda, Maryland, USA. FAU - Mariani, Laura AU - Mariani L AD - Division of Nephrology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA. AD - Nephrotic Syndrome Study Network Consortia, Ann Arbor, Michigan, USA. FAU - Parikh, Hemang AU - Parikh H AD - Vasculitis Clinical Research Consortium, Philadelphia, Pennsylvania, USA. AD - Health Informatics Institute, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA. FAU - Lindenmeyer, Maja T AU - Lindenmeyer MT AD - Nephrological Center Medical Clinic and Polyclinic IV, University of Munich, Munich, Germany. FAU - Ju, Wenjun AU - Ju W AD - Division of Nephrology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA. AD - Nephrotic Syndrome Study Network Consortia, Ann Arbor, Michigan, USA. FAU - Greene, Casey S AU - Greene CS AD - Vasculitis Clinical Research Consortium, Philadelphia, Pennsylvania, USA. AD - Department of Systems Pharmacology and Translational Therapeutics, Institute for Translational Medicine and Therapeutics, Institute for Biomedical Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Godfrey, Brad AU - Godfrey B AD - Division of Nephrology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA. AD - Nephrotic Syndrome Study Network Consortia, Ann Arbor, Michigan, USA. FAU - Cohen, Clemens D AU - Cohen CD AD - Nephrological Center Medical Clinic and Polyclinic IV, University of Munich, Munich, Germany. FAU - Krischer, Jeffrey AU - Krischer J AD - Vasculitis Clinical Research Consortium, Philadelphia, Pennsylvania, USA. AD - Health Informatics Institute, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA. FAU - Kretzler, Matthias AU - Kretzler M AD - Division of Nephrology, Michigan Medicine, University of Michigan, Ann Arbor, Michigan, USA. AD - Nephrotic Syndrome Study Network Consortia, Ann Arbor, Michigan, USA. FAU - Merkel, Peter A AU - Merkel PA AD - Vasculitis Clinical Research Consortium, Philadelphia, Pennsylvania, USA. AD - Division of Rheumatology and Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania, USA. CN - Vasculitis Clinical Research Consortium, the European Renal cDNA Bank cohort, and the Nephrotic Syndrome Study Network LA - eng GR - U54 DK083912/DK/NIDDK NIH HHS/United States GR - U54 RR019497/RR/NCRR NIH HHS/United States GR - T32 AR007442/AR/NIAMS NIH HHS/United States GR - P30 DK081943/DK/NIDDK NIH HHS/United States GR - U54 AR057319/AR/NIAMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, N.I.H., Intramural PT - Research Support, Non-U.S. Gov't DEP - 20180503 PL - England TA - Ann Rheum Dis JT - Annals of the rheumatic diseases JID - 0372355 RN - 0 (Cytokines) RN - 0 (Isoenzymes) RN - 0 (RNA, Messenger) MH - Adult MH - Aged MH - Anti-Neutrophil Cytoplasmic Antibody-Associated Vasculitis/genetics/metabolism/pathology MH - Biopsy MH - Cytokines/biosynthesis MH - Female MH - Gene Expression Regulation MH - Glomerulonephritis/genetics/*metabolism/pathology MH - Humans MH - Isoenzymes/metabolism MH - Kidney Glomerulus/metabolism/pathology MH - Kidney Tubules/metabolism/pathology MH - Lupus Erythematosus, Systemic/genetics/metabolism/pathology MH - Male MH - Metabolic Networks and Pathways/*genetics/immunology MH - Middle Aged MH - Nephrotic Syndrome/genetics/metabolism/pathology MH - Pentose Phosphate Pathway/genetics MH - RNA, Messenger/genetics MH - Transcriptome MH - Young Adult PMC - PMC6045442 MID - NIHMS975677 OTO - NOTNLM OT - granulomatosis with polyangiitis OT - lupus nephritis OT - systemic vasculitis COIS- Competing interests: None declared. EDAT- 2018/05/05 06:00 MHDA- 2019/08/06 06:00 PMCR- 2018/08/01 CRDT- 2018/05/05 06:00 PHST- 2017/12/31 00:00 [received] PHST- 2018/04/04 00:00 [revised] PHST- 2018/04/16 00:00 [accepted] PHST- 2018/05/05 06:00 [pubmed] PHST- 2019/08/06 06:00 [medline] PHST- 2018/05/05 06:00 [entrez] PHST- 2018/08/01 00:00 [pmc-release] AID - annrheumdis-2017-212935 [pii] AID - 10.1136/annrheumdis-2017-212935 [doi] PST - ppublish SO - Ann Rheum Dis. 2018 Aug;77(8):1226-1233. doi: 10.1136/annrheumdis-2017-212935. Epub 2018 May 3.