PMID- 37688871 OWN - NLM STAT- MEDLINE DCOM- 20230920 LR - 20230920 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 460 DP - 2023 Oct 15 TI - Fibroblast-derived CXCL14 aggravates crystalline silica-induced pulmonary fibrosis by mediating polarization and recruitment of interstitial macrophages. PG - 132489 LID - S0304-3894(23)01772-7 [pii] LID - 10.1016/j.jhazmat.2023.132489 [doi] AB - Exposure to crystalline silica (CS) particles in worksites and dwellings can lead to silicosis due to excessive fibroblast activation. Considering their immuno-regulatory activities, the contribution of pulmonary fibroblasts in the progression of silicosis has not been thoroughly characterized. Here, we demonstrate that exposure of the lung to CS particles leads to the upregulation of fibroblast-derived C-X-C motif chemokine ligand 14 (CXCL14). By employing an in vitro co-culture system, we demonstrated activated fibroblasts recruited bone marrow-derived macrophages (BMDMs) and favored alternative macrophage polarization (M2) mediated by CXCL14. Furthermore, in vivo studies echoed that systemic CXCL14 neutralizing or fibroblast-specific Cxcl14 knockout proved CXCL14 was indispensable for the recruitment and phenotype alteration of lung macrophages, especially interstitial macrophages (IMs), under stimulation by CS particles. Mechanistically, we showed that GLI2 and p21-mediated cellular senescence were mediators of CXCL14 production following CS exposure. Accordingly, GLI2 blockage and countering cellular senescence by reviving PINK1-mediated mitophagy may be efficient strategies to reduce CXCL14 expression in activated fibroblasts during silicosis. Our findings emphasize the immuno-regulatory function of fibroblasts in silicosis via CXCL14, providing intervention targets for CS-induced pulmonary fibrosis. CI - Copyright (c) 2023 Elsevier B.V. All rights reserved. FAU - You, Yichuan AU - You Y AD - Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, PR China; Department of Occupational and Environmental Health, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, PR China. FAU - Yuan, Haoyang AU - Yuan H AD - Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, PR China; Department of Occupational and Environmental Health, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, PR China. FAU - Min, Hui AU - Min H AD - Department of Immunology, College of Basic Medical Sciences, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, PR China. FAU - Li, Chao AU - Li C AD - Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, PR China; Department of Occupational and Environmental Health, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, PR China. Electronic address: lichao@cmu.edu.cn. FAU - Chen, Jie AU - Chen J AD - Key Laboratory of Environmental Stress and Chronic Disease Control & Prevention (China Medical University), Ministry of Education, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, PR China; Department of Occupational and Environmental Health, School of Public Health, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang 110122, PR China. Electronic address: jchen@cmu.edu.cn. LA - eng PT - Journal Article DEP - 20230908 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 7631-86-9 (Silicon Dioxide) RN - 0 (CXCL14 protein, human) RN - 0 (Chemokines, CXC) SB - IM MH - Humans MH - *Pulmonary Fibrosis/chemically induced MH - Silicon Dioxide/toxicity MH - Macrophages MH - *Silicosis MH - Fibroblasts MH - Chemokines, CXC OTO - NOTNLM OT - CXCL14 OT - Crystalline silica OT - Fibroblasts OT - Macrophages OT - Pulmonary fibrosis COIS- Declaration of Competing Interest Authors declare that (1) Animal use has been approved by the Animal Use and Care Committee at China Medical University with a protocol number of CMU2021405. (2) All experiments and surgical procedures were carried out in accordance with the National Institute of Health Guide for the Care and Use of Laboratory Animals (NIH Publications No. 80-23) revised 1996. (3) All efforts have been made to minimize the number of animals used and their suffering. (4) There is no conflict of interest. (5) The work described was original research that has not been published previously. EDAT- 2023/09/10 00:41 MHDA- 2023/09/20 06:42 CRDT- 2023/09/09 18:02 PHST- 2023/06/29 00:00 [received] PHST- 2023/08/29 00:00 [revised] PHST- 2023/09/03 00:00 [accepted] PHST- 2023/09/20 06:42 [medline] PHST- 2023/09/10 00:41 [pubmed] PHST- 2023/09/09 18:02 [entrez] AID - S0304-3894(23)01772-7 [pii] AID - 10.1016/j.jhazmat.2023.132489 [doi] PST - ppublish SO - J Hazard Mater. 2023 Oct 15;460:132489. doi: 10.1016/j.jhazmat.2023.132489. Epub 2023 Sep 8.