PMID- 36139421 OWN - NLM STAT- MEDLINE DCOM- 20220926 LR - 20221129 IS - 2073-4409 (Electronic) IS - 2073-4409 (Linking) VI - 11 IP - 18 DP - 2022 Sep 12 TI - A BET Protein Inhibitor Targeting Mononuclear Myeloid Cells Affects Specific Inflammatory Mediators and Pathways in Crohn's Disease. LID - 10.3390/cells11182846 [doi] LID - 2846 AB - BACKGROUND: Myeloid cells are critical determinants of the sustained inflammation in Crohn's Disease (CD). Targeting such cells may be an effective therapeutic approach for refractory CD patients. Bromodomain and extra-terminal domain protein inhibitors (iBET) are potent anti-inflammatory agents; however, they also possess wide-ranging toxicities. In the current study, we make use of a BET inhibitor containing an esterase sensitive motif (ESM-iBET), which is cleaved by carboxylesterase-1 (CES1), a highly expressed esterase in mononuclear myeloid cells. METHODS: We profiled CES1 protein expression in the intestinal biopsies, peripheral blood, and CD fistula tract (fCD) cells of CD patients using mass cytometry. The anti-inflammatory effect of ESM-iBET or its control (iBET) were evaluated in healthy donor CD14(+) monocytes and fCD cells, using cytometric beads assay or RNA-sequencing. RESULTS: CES1 was specifically expressed in monocyte, macrophage, and dendritic cell populations in the intestinal tissue, peripheral blood, and fCD cells of CD patients. ESM-iBET inhibited IL1beta, IL6, and TNFalpha secretion from healthy donor CD14(+) monocytes and fCD immune cells, with 10- to 26-fold more potency over iBET in isolated CD14(+) monocytes. Transcriptomic analysis revealed that ESM-iBET inhibited multiple inflammatory pathways, including TNF, JAK-STAT, NF-kB, NOD2, and AKT signaling, with superior potency over iBET. CONCLUSIONS: We demonstrate specific CES1 expression in mononuclear myeloid cell subsets in peripheral blood and inflamed tissues of CD patients. We report that low dose ESM-iBET accumulates in CES1-expressing cells and exerts robust anti-inflammatory effects, which could be beneficial in refractory CD patients. FAU - Elfiky, Ahmed M I AU - Elfiky AMI AD - Tytgat Institute for Liver and Intestinal and Research, Amsterdam Gastroenterology & Metabolism, Amsterdam University Medical Centers, University of Amsterdam, 1105 BK Amsterdam, The Netherlands. AD - Immunology Research Unit, GSK Medicines Research Centre, Stevenage SG1 2FX, UK. FAU - Hageman, Ishtu L AU - Hageman IL AUID- ORCID: 0000-0002-3180-156X AD - Tytgat Institute for Liver and Intestinal and Research, Amsterdam Gastroenterology & Metabolism, Amsterdam University Medical Centers, University of Amsterdam, 1105 BK Amsterdam, The Netherlands. AD - Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), University of Amsterdam, 1105 AZ Amsterdam, The Netherlands. FAU - Becker, Marte A J AU - Becker MAJ AUID- ORCID: 0000-0002-7881-4958 AD - Tytgat Institute for Liver and Intestinal and Research, Amsterdam Gastroenterology & Metabolism, Amsterdam University Medical Centers, University of Amsterdam, 1105 BK Amsterdam, The Netherlands. FAU - Verhoeff, Jan AU - Verhoeff J AUID- ORCID: 0000-0003-0648-0642 AD - Tytgat Institute for Liver and Intestinal and Research, Amsterdam Gastroenterology & Metabolism, Amsterdam University Medical Centers, University of Amsterdam, 1105 BK Amsterdam, The Netherlands. AD - Department of Molecular Cell Biology & Immunology, Amsterdam Infection & Immunity Institute and Cancer Center Amsterdam, Amsterdam University Medical Centers, Free University Amsterdam, 1081 HV Amsterdam, The Netherlands. FAU - Li Yim, Andrew Y F AU - Li Yim AYF AUID- ORCID: 0000-0002-0754-0953 AD - Tytgat Institute for Liver and Intestinal and Research, Amsterdam Gastroenterology & Metabolism, Amsterdam University Medical Centers, University of Amsterdam, 1105 BK Amsterdam, The Netherlands. AD - Immunology Research Unit, GSK Medicines Research Centre, Stevenage SG1 2FX, UK. AD - Genome Diagnostics Laboratory, Department of Clinical Genetics, Amsterdam Reproduction & Development, Amsterdam University Medical Centers, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands. FAU - Joustra, Vincent W AU - Joustra VW AUID- ORCID: 0000-0003-4157-7220 AD - Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), University of Amsterdam, 1105 AZ Amsterdam, The Netherlands. FAU - Mulders, Lieven AU - Mulders L AD - Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), University of Amsterdam, 1105 AZ Amsterdam, The Netherlands. FAU - Fung, Ivan AU - Fung I AD - Tytgat Institute for Liver and Intestinal and Research, Amsterdam Gastroenterology & Metabolism, Amsterdam University Medical Centers, University of Amsterdam, 1105 BK Amsterdam, The Netherlands. FAU - Rioja, Inmaculada AU - Rioja I AD - Immunology Research Unit, GSK Medicines Research Centre, Stevenage SG1 2FX, UK. FAU - Prinjha, Rab K AU - Prinjha RK AD - Immunology Research Unit, GSK Medicines Research Centre, Stevenage SG1 2FX, UK. FAU - Smithers, Nicholas N AU - Smithers NN AD - Immunology Research Unit, GSK Medicines Research Centre, Stevenage SG1 2FX, UK. FAU - Furze, Rebecca C AU - Furze RC AD - Immunology Research Unit, GSK Medicines Research Centre, Stevenage SG1 2FX, UK. FAU - Mander, Palwinder K AU - Mander PK AD - Immunology Research Unit, GSK Medicines Research Centre, Stevenage SG1 2FX, UK. FAU - Bell, Matthew J AU - Bell MJ AD - Immunology Research Unit, GSK Medicines Research Centre, Stevenage SG1 2FX, UK. FAU - Buskens, Christianne J AU - Buskens CJ AUID- ORCID: 0000-0001-9425-8683 AD - Department of Surgery, Amsterdam UMC, University of Amsterdam, 1081 HV Amsterdam, The Netherlands. FAU - D'Haens, Geert R AU - D'Haens GR AD - Department of Gastroenterology and Hepatology, Amsterdam University Medical Centers, Amsterdam Gastroenterology Endocrinology Metabolism (AGEM), University of Amsterdam, 1105 AZ Amsterdam, The Netherlands. FAU - Wildenberg, Manon E AU - Wildenberg ME AD - Tytgat Institute for Liver and Intestinal and Research, Amsterdam Gastroenterology & Metabolism, Amsterdam University Medical Centers, University of Amsterdam, 1105 BK Amsterdam, The Netherlands. FAU - de Jonge, Wouter J AU - de Jonge WJ AUID- ORCID: 0000-0002-3241-1547 AD - Tytgat Institute for Liver and Intestinal and Research, Amsterdam Gastroenterology & Metabolism, Amsterdam University Medical Centers, University of Amsterdam, 1105 BK Amsterdam, The Netherlands. AD - Department of Surgery, University of Bonn, 53127 Bonn, Germany. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220912 PL - Switzerland TA - Cells JT - Cells JID - 101600052 RN - 0 (Anti-Inflammatory Agents) RN - 0 (Inflammation Mediators) RN - 0 (Interleukin-6) RN - 0 (NF-kappa B) RN - 0 (Tumor Necrosis Factor-alpha) RN - 63231-63-0 (RNA) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-akt) RN - EC 3.1.1.- (Carboxylic Ester Hydrolases) SB - IM MH - *Anti-Inflammatory Agents/pharmacology/therapeutic use MH - Carboxylic Ester Hydrolases MH - *Crohn Disease/drug therapy/metabolism MH - Humans MH - Inflammation Mediators MH - Interleukin-6 MH - Myeloid Cells/metabolism MH - NF-kappa B MH - Proto-Oncogene Proteins c-akt MH - RNA MH - Tumor Necrosis Factor-alpha PMC - PMC9497176 OTO - NOTNLM OT - BET inhibitor OT - CES1 OT - IBD COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. NS, IR, RP, RF, HL, PM, and MB were employed by GSK at the time this study was conducted. AE, MG, IH, JV, AY, MJB, MW, GD, CB, IF, LM, VJ, and WJ were employed by Amsterdam University Medical Centers at the time this study was conducted. EDAT- 2022/09/24 06:00 MHDA- 2022/09/28 06:00 PMCR- 2022/09/12 CRDT- 2022/09/23 01:06 PHST- 2022/06/15 00:00 [received] PHST- 2022/08/08 00:00 [revised] PHST- 2022/09/06 00:00 [accepted] PHST- 2022/09/23 01:06 [entrez] PHST- 2022/09/24 06:00 [pubmed] PHST- 2022/09/28 06:00 [medline] PHST- 2022/09/12 00:00 [pmc-release] AID - cells11182846 [pii] AID - cells-11-02846 [pii] AID - 10.3390/cells11182846 [doi] PST - epublish SO - Cells. 2022 Sep 12;11(18):2846. doi: 10.3390/cells11182846.