PMID- 36902422 OWN - NLM STAT- MEDLINE DCOM- 20230315 LR - 20230315 IS - 1422-0067 (Electronic) IS - 1422-0067 (Linking) VI - 24 IP - 5 DP - 2023 Mar 5 TI - Dual Role of Mitogen-Activated Protein Kinase 8 Interacting Protein-1 in Inflammasome and Pancreatic beta-Cell Function. LID - 10.3390/ijms24054990 [doi] LID - 4990 AB - Inflammasomes have been implicated in the pathogenesis of type 2 diabetes (T2D). However, their expression and functional importance in pancreatic beta-cells remain largely unknown. Mitogen-activated protein kinase 8 interacting protein-1 (MAPK8IP1) is a scaffold protein that regulates JNK signaling and is involved in various cellular processes. The precise role of MAPK8IP1 in inflammasome activation in beta-cells has not been defined. To address this gap in knowledge, we performed a set of bioinformatics, molecular, and functional experiments in human islets and INS-1 (832/13) cells. Using RNA-seq expression data, we mapped the expression pattern of proinflammatory and inflammasome-related genes (IRGs) in human pancreatic islets. Expression of MAPK8IP1 in human islets was found to correlate positively with key IRGs, including the NOD-like receptor (NLR) family pyrin domain containing 3 (NLRP3), Gasdermin D (GSDMD) and Apoptosis-associated speck-like protein containing a CARD (ASC), but correlate inversely with Nuclear factor kappa beta1 (NF-kappabeta1), Caspase-1 (CASP-1), Interleukin-18 (IL-18), Interleukin-1beta (IL-1beta) and Interleukin 6 (IL-6). Ablation of Mapk8ip1 by siRNA in INS-1 cells down-regulated the basal expression levels of Nlrp3, NLR family CARD domain containing 4 (Nlrc4), NLR family CARD domain containing 1 (Nlrp1), Casp1, Gsdmd, Il-1beta, Il-18, Il-6, Asc, and Nf-kappabeta1 at the mRNA and/or protein level and decreased palmitic acid (PA)-induced inflammasome activation. Furthermore, Mapk8ip1-silened cells substantially reduced reactive oxygen species (ROS) generation and apoptosis in palmitic acid-stressed INS-1 cells. Nonetheless, silencing of Mapk8ip1 failed to preserve beta-cell function against inflammasome response. Taken together, these findings suggest that MAPK8IP1 is involved in regulating beta-cells by multiple pathways. FAU - Saeed, Rania AU - Saeed R AD - Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt. AD - Sharjah Institute for Medical Research, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates. FAU - Mohammed, Abdul Khader AU - Mohammed AK AUID- ORCID: 0000-0002-8774-0014 AD - Sharjah Institute for Medical Research, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates. FAU - Saleh, Sarra E AU - Saleh SE AUID- ORCID: 0000-0002-4809-4451 AD - Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt. FAU - Aboulwafa, Mohammad M AU - Aboulwafa MM AD - Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt. AD - Faculty of Pharmacy, King Salman International University, Ras-Sudr, El Tor 8701301, Egypt. FAU - Aboshanab, Khaled M AU - Aboshanab KM AUID- ORCID: 0000-0002-7608-850X AD - Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt. FAU - Taneera, Jalal AU - Taneera J AUID- ORCID: 0000-0002-3341-1063 AD - Sharjah Institute for Medical Research, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates. AD - Department of Basic Sciences, College of Medicine, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates. LA - eng GR - 22010901106 and 2001090176/University of Sharjah, UAE/ PT - Journal Article DEP - 20230305 PL - Switzerland TA - Int J Mol Sci JT - International journal of molecular sciences JID - 101092791 RN - EC 3.4.22.36 (Caspase 1) RN - 0 (Inflammasomes) RN - 0 (Interleukin-18) RN - 0 (Interleukin-1beta) RN - 0 (Interleukin-6) RN - 0 (NLR Family, Pyrin Domain-Containing 3 Protein) RN - 0 (NLR Proteins) RN - 2V16EO95H1 (Palmitic Acid) RN - 0 (Mapk8ip1 protein, rat) RN - 0 (MAPK8IP1 protein, human) RN - 0 (Adaptor Proteins, Signal Transducing) SB - IM MH - Humans MH - Caspase 1/metabolism MH - *Diabetes Mellitus, Type 2 MH - *Inflammasomes/metabolism MH - Interleukin-18 MH - Interleukin-1beta/metabolism MH - Interleukin-6 MH - NLR Family, Pyrin Domain-Containing 3 Protein/metabolism MH - NLR Proteins MH - Palmitic Acid MH - Adaptor Proteins, Signal Transducing/genetics MH - *Insulin-Secreting Cells/metabolism PMC - PMC10002854 OTO - NOTNLM OT - MAPK8IP1 OT - inflammasome OT - pancreatic beta-cell function OT - regulation OT - siRNA silencing OT - type 2 diabetes COIS- The authors declare no conflict of interest. EDAT- 2023/03/12 06:00 MHDA- 2023/03/15 06:00 PMCR- 2023/03/05 CRDT- 2023/03/11 01:19 PHST- 2023/01/21 00:00 [received] PHST- 2023/03/01 00:00 [revised] PHST- 2023/03/02 00:00 [accepted] PHST- 2023/03/11 01:19 [entrez] PHST- 2023/03/12 06:00 [pubmed] PHST- 2023/03/15 06:00 [medline] PHST- 2023/03/05 00:00 [pmc-release] AID - ijms24054990 [pii] AID - ijms-24-04990 [pii] AID - 10.3390/ijms24054990 [doi] PST - epublish SO - Int J Mol Sci. 2023 Mar 5;24(5):4990. doi: 10.3390/ijms24054990.