PMID- 36465100 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230116 IS - 2589-0042 (Electronic) IS - 2589-0042 (Linking) VI - 25 IP - 12 DP - 2022 Dec 22 TI - Blockage of lamin-A/C loss diminishes the pro-inflammatory macrophage response. PG - 105528 LID - 10.1016/j.isci.2022.105528 [doi] LID - 105528 AB - Mutations and defects in nuclear lamins can cause major pathologies, including inflammation and inflammatory diseases. Yet, the underlying molecular mechanisms are not known. We now report that the pro-inflammatory activation of macrophages, as induced by LPS or pathogenic E. coli, reduces Lamin-A/C levels thereby augmenting pro-inflammatory gene expression and cytokine secretion. We show that the activation of bone-marrow-derived macrophages (BMDMs) causes the phosphorylation and degradation of Lamin-A/C, as mediated by CDK1 and Caspase-6, respectively, necessary for upregulating IFN-beta expression. Enhanced IFN-beta expression subsequently increases pro-inflammatory gene expression via the IFN-beta-STAT axis. Pro-inflammatory gene expression was also amplified in the complete absence of Lamin-A/C. Alternatively, pharmacological inhibition of either Lamin-A/C phosphorylation or degradation significantly downregulated pro-inflammatory gene expression, as did the targeting of IFN-beta-STAT pathway members, i.e. phospho-STAT1 and phospho-STAT3. As Lamin-A/C is a previously unappreciated regulator of the pro-inflammatory macrophage response, our findings suggest novel opportunities to treat inflammatory diseases. CI - (c) 2022 The Author(s). FAU - Mehl, Johanna L AU - Mehl JL AD - Laboratory of Applied Mechanobiology, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, HCI E357.1, Zurich 8093, Switzerland. FAU - Earle, Ashley AU - Earle A AD - Meinig School of Biomedical Engineering & Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY, USA. AD - Department of Civil and Mechanical Engineering, York College of Pennsylvania, York, PA, USA. FAU - Lammerding, Jan AU - Lammerding J AD - Meinig School of Biomedical Engineering & Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, NY, USA. FAU - Mhlanga, Musa AU - Mhlanga M AD - Radboud Institute of Molecular Life Sciences, Radboud University, Nijmegen, the Netherlands. FAU - Vogel, Viola AU - Vogel V AD - Laboratory of Applied Mechanobiology, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, HCI E357.1, Zurich 8093, Switzerland. FAU - Jain, Nikhil AU - Jain N AD - Laboratory of Applied Mechanobiology, Institute of Translational Medicine, Department of Health Sciences and Technology, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, HCI E357.1, Zurich 8093, Switzerland. LA - eng GR - R01 GM137605/GM/NIGMS NIH HHS/United States GR - R01 HL082792/HL/NHLBI NIH HHS/United States GR - U54 CA210184/CA/NCI NIH HHS/United States PT - Journal Article DEP - 20221107 PL - United States TA - iScience JT - iScience JID - 101724038 PMC - PMC9708799 OTO - NOTNLM OT - Cell biology OT - Functional aspects of cell biology OT - Immune response OT - Immunology COIS- The authors declare that there is no conflict of interest regarding the publication of this article. EDAT- 2022/12/06 06:00 MHDA- 2022/12/06 06:01 PMCR- 2022/11/07 CRDT- 2022/12/05 03:35 PHST- 2022/04/20 00:00 [received] PHST- 2022/08/09 00:00 [revised] PHST- 2022/11/04 00:00 [accepted] PHST- 2022/12/05 03:35 [entrez] PHST- 2022/12/06 06:00 [pubmed] PHST- 2022/12/06 06:01 [medline] PHST- 2022/11/07 00:00 [pmc-release] AID - S2589-0042(22)01800-4 [pii] AID - 105528 [pii] AID - 10.1016/j.isci.2022.105528 [doi] PST - epublish SO - iScience. 2022 Nov 7;25(12):105528. doi: 10.1016/j.isci.2022.105528. eCollection 2022 Dec 22.