PMID- 38136175 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20231225 IS - 2076-3921 (Print) IS - 2076-3921 (Electronic) IS - 2076-3921 (Linking) VI - 12 IP - 12 DP - 2023 Nov 29 TI - BET Protein Inhibitor JQ1 Ameliorates Experimental Peritoneal Damage by Inhibition of Inflammation and Oxidative Stress. LID - 10.3390/antiox12122055 [doi] LID - 2055 AB - Peritoneal dialysis (PD) is a current replacement therapy for end-stage kidney diseases (ESKDs). However, long-term exposure to PD fluids may lead to damage of the peritoneal membrane (PM) through mechanisms involving the activation of the inflammatory response and mesothelial-to-mesenchymal transition (MMT), leading to filtration failure. Peritoneal damage depends on a complex interaction among external stimuli, intrinsic properties of the PM, and subsequent activities of the local innate-adaptive immune system. Epigenetic drugs targeting bromodomain and extra-terminal domain (BET) proteins have shown beneficial effects on different experimental preclinical diseases, mainly by inhibiting proliferative and inflammatory responses. However the effect of BET inhibition on peritoneal damage has not been studied. To this aim, we have evaluated the effects of treatment with the BET inhibitor JQ1 in a mouse model of peritoneal damage induced by chlorhexidine gluconate (CHX). We found that JQ1 ameliorated the CHX-induced PM thickness and inflammatory cell infiltration. Moreover, JQ1 decreased gene overexpression of proinflammatory and profibrotic markers, together with an inhibition of the nuclear factor-kappaB (NF-kappaB) pathway. Additionally, JQ1 blocked the activation of nuclear factor erythroid 2-related factor 2 (NRF2) and restored changes in the mRNA expression levels of NADPH oxidases (NOX1 and NOX4) and NRF2/target antioxidant response genes. To corroborate the in vivo findings, we evaluated the effects of the BET inhibitor JQ1 on PD patients' effluent-derived primary mesothelial cells and on the MeT-5A cell line. JQ1 inhibited tumor necrosis factor-alpha (TNF-alpha)-induced proinflammatory gene upregulation and restored MMT phenotype changes, together with the downmodulation of oxidative stress. Taken together, these results suggest that BET inhibitors may be a potential therapeutic option to ameliorate peritoneal damage. FAU - Marchant, Vanessa AU - Marchant V AUID- ORCID: 0000-0002-2767-0229 AD - Cellular and Molecular Biology in Renal and Vascular Pathology Laboratory, IIS-Fundacion Jimenez Diaz, School of Medicine, Universidad Autonoma de Madrid, 28040 Madrid, Spain. AD - RICORS2040, 28029 Madrid, Spain. FAU - Trionfetti, Flavia AU - Trionfetti F AUID- ORCID: 0000-0002-7327-194X AD - Gene Expression Laboratory, National Institute for Infectious Diseases, Lazzaro Spallanzani IRCCS, 00149 Rome, Italy. AD - Department of Molecular Medicine, Sapienza University of Rome, 00161 Rome, Italy. FAU - Tejedor-Santamaria, Lucia AU - Tejedor-Santamaria L AUID- ORCID: 0000-0003-4295-7284 AD - Cellular and Molecular Biology in Renal and Vascular Pathology Laboratory, IIS-Fundacion Jimenez Diaz, School of Medicine, Universidad Autonoma de Madrid, 28040 Madrid, Spain. AD - RICORS2040, 28029 Madrid, Spain. FAU - Rayego-Mateos, Sandra AU - Rayego-Mateos S AUID- ORCID: 0000-0001-6874-2359 AD - Cellular and Molecular Biology in Renal and Vascular Pathology Laboratory, IIS-Fundacion Jimenez Diaz, School of Medicine, Universidad Autonoma de Madrid, 28040 Madrid, Spain. AD - RICORS2040, 28029 Madrid, Spain. FAU - Rotili, Dante AU - Rotili D AUID- ORCID: 0000-0002-8428-8763 AD - Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy. FAU - Bontempi, Giulio AU - Bontempi G AD - Gene Expression Laboratory, National Institute for Infectious Diseases, Lazzaro Spallanzani IRCCS, 00149 Rome, Italy. AD - Department of Molecular Medicine, Sapienza University of Rome, 00161 Rome, Italy. FAU - Domenici, Alessandro AU - Domenici A AD - Renal Unit, Department of Clinical and Molecular Medicine, Sant'Andrea University Hospital, Sapienza University of Rome, 00189 Rome, Italy. FAU - Mene, Paolo AU - Mene P AUID- ORCID: 0000-0001-6395-6227 AD - Renal Unit, Department of Clinical and Molecular Medicine, Sant'Andrea University Hospital, Sapienza University of Rome, 00189 Rome, Italy. FAU - Mai, Antonello AU - Mai A AUID- ORCID: 0000-0001-9176-2382 AD - Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy. FAU - Martin-Cleary, Catalina AU - Martin-Cleary C AD - Laboratory of Nephrology, IIS-Fundacion Jimenez Diaz, School of Medicine, Universidad Autonoma de Madrid, 28040 Madrid, Spain. FAU - Ortiz, Alberto AU - Ortiz A AUID- ORCID: 0000-0002-9805-9523 AD - RICORS2040, 28029 Madrid, Spain. AD - Laboratory of Nephrology, IIS-Fundacion Jimenez Diaz, School of Medicine, Universidad Autonoma de Madrid, 28040 Madrid, Spain. FAU - Ramos, Adrian M AU - Ramos AM AD - RICORS2040, 28029 Madrid, Spain. AD - Laboratory of Nephrology, IIS-Fundacion Jimenez Diaz, School of Medicine, Universidad Autonoma de Madrid, 28040 Madrid, Spain. FAU - Strippoli, Raffaele AU - Strippoli R AUID- ORCID: 0000-0003-3483-8381 AD - Gene Expression Laboratory, National Institute for Infectious Diseases, Lazzaro Spallanzani IRCCS, 00149 Rome, Italy. AD - Department of Molecular Medicine, Sapienza University of Rome, 00161 Rome, Italy. FAU - Ruiz-Ortega, Marta AU - Ruiz-Ortega M AUID- ORCID: 0000-0002-1495-6535 AD - Cellular and Molecular Biology in Renal and Vascular Pathology Laboratory, IIS-Fundacion Jimenez Diaz, School of Medicine, Universidad Autonoma de Madrid, 28040 Madrid, Spain. AD - RICORS2040, 28029 Madrid, Spain. LA - eng PT - Journal Article DEP - 20231129 PL - Switzerland TA - Antioxidants (Basel) JT - Antioxidants (Basel, Switzerland) JID - 101668981 PMC - PMC10740563 OTO - NOTNLM OT - BET proteins OT - JQ1 OT - NRF2 OT - inflammation OT - oxidation OT - peritoneal damage COIS- The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analysis, or interpretation of the data; in the writing of the manuscript, or in the decision to publish the results. EDAT- 2023/12/23 12:44 MHDA- 2023/12/23 12:45 PMCR- 2023/11/29 CRDT- 2023/12/23 01:02 PHST- 2023/10/21 00:00 [received] PHST- 2023/11/22 00:00 [revised] PHST- 2023/11/23 00:00 [accepted] PHST- 2023/12/23 12:45 [medline] PHST- 2023/12/23 12:44 [pubmed] PHST- 2023/12/23 01:02 [entrez] PHST- 2023/11/29 00:00 [pmc-release] AID - antiox12122055 [pii] AID - antioxidants-12-02055 [pii] AID - 10.3390/antiox12122055 [doi] PST - epublish SO - Antioxidants (Basel). 2023 Nov 29;12(12):2055. doi: 10.3390/antiox12122055.