PMID- 26163174 OWN - NLM STAT- MEDLINE DCOM- 20160113 LR - 20150928 IS - 1096-0333 (Electronic) IS - 0041-008X (Linking) VI - 288 IP - 2 DP - 2015 Oct 15 TI - Role of human pulmonary fibroblast-derived MCP-1 in cell activation and migration in experimental silicosis. PG - 152-60 LID - S0041-008X(15)30029-6 [pii] LID - 10.1016/j.taap.2015.07.002 [doi] AB - BACKGROUND: Silicosis is a systemic disease caused by inhaling silicon dioxide (SiO2). Phagocytosis of SiO2 in the lung initiates an inflammatory cascade that results in fibroblast proliferation and migration and subsequent fibrosis. Clinical evidence indicates that the activation of alveolar macrophages by SiO2 produces rapid and sustained inflammation that is characterized by the generation of monocyte chemotactic protein 1 (MCP-1), which induces fibrosis. Pulmonary fibroblast-derived MCP-1 may play a critical role in fibroblast proliferation and migration. METHODS AND RESULTS: Experiments using primary cultured adult human pulmonary fibroblasts (HPF-a) demonstrated the following results: 1) SiO2 treatment resulted in the rapid and sustained induction of MCP-1 as well as the elevation of the CC chemokine receptor type 2 (CCR2) protein levels; 2) pretreatment of HPF-a with RS-102895, a specific CCR2 inhibitor, abolished the SiO2-induced increase in cell activation and migration in both 2D and 3D culture systems; and 3) RNA interference targeting CCR2 prevented the SiO2-induced increase in cell migration. CONCLUSION: These data demonstrated that the up-regulation of pulmonary fibroblast-derived MCP-1 is involved in pulmonary fibroblast migration induced by SiO2. CCR2 was also up-regulated in response to SiO2, and this up-regulation facilitated the effect of MCP-1 on fibroblasts. Our study deciphered the link between fibroblast-derived MCP-1 and SiO2-induced cell migration. This finding provides novel insight into the potential of MCP-1 in the development of novel therapeutic strategies for silicosis. CI - Copyright (c) 2015 Elsevier Inc. All rights reserved. FAU - Liu, Xueting AU - Liu X AD - Department of Physiology, Medical School of Southeast University, Nanjing, Jiangsu 210009, China. FAU - Fang, Shencun AU - Fang S AD - Nine Department of Respiratory Medicine, Nanjing Chest Hospital, Nanjing, Jiangsu 210029, China. FAU - Liu, Haijun AU - Liu H AD - Neurobiology Laboratory, New Drug Screening Centre, China Pharmaceutical University, Nanjing, Jiangsu 210009, China. FAU - Wang, Xingang AU - Wang X AD - Department of Physiology, Medical School of Southeast University, Nanjing, Jiangsu 210009, China. FAU - Dai, Xiaoniu AU - Dai X AD - Department of Physiology, Medical School of Southeast University, Nanjing, Jiangsu 210009, China. FAU - Yin, Qing AU - Yin Q AD - Department of Physiology, Medical School of Southeast University, Nanjing, Jiangsu 210009, China. FAU - Yun, Tianwei AU - Yun T AD - Department of Physiology, Medical School of Southeast University, Nanjing, Jiangsu 210009, China. FAU - Wang, Wei AU - Wang W AD - Nine Department of Respiratory Medicine, Nanjing Chest Hospital, Nanjing, Jiangsu 210029, China. FAU - Zhang, Yingming AU - Zhang Y AD - Nine Department of Respiratory Medicine, Nanjing Chest Hospital, Nanjing, Jiangsu 210029, China. FAU - Liao, Hong AU - Liao H AD - Neurobiology Laboratory, New Drug Screening Centre, China Pharmaceutical University, Nanjing, Jiangsu 210009, China. FAU - Zhang, Wei AU - Zhang W AD - Department of Physiology, Medical School of Southeast University, Nanjing, Jiangsu 210009, China. FAU - Yao, Honghong AU - Yao H AD - Department of Pharmacology, Medical School of Southeast University, Nanjing, Jiangsu 210009, China. FAU - Chao, Jie AU - Chao J AD - Department of Physiology, Medical School of Southeast University, Nanjing, Jiangsu 210009, China. Electronic address: chaojie@seu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150708 PL - United States TA - Toxicol Appl Pharmacol JT - Toxicology and applied pharmacology JID - 0416575 RN - 0 (CCL2 protein, human) RN - 0 (CCR2 protein, human) RN - 0 (Chemokine CCL2) RN - 0 (Receptors, CCR2) RN - 7631-86-9 (Silicon Dioxide) SB - IM MH - *Cell Movement/drug effects MH - Cells, Cultured MH - Chemokine CCL2/genetics/*metabolism MH - Fibroblasts/drug effects/*metabolism/pathology MH - Humans MH - Lung/drug effects/*metabolism/pathology MH - Pulmonary Fibrosis/chemically induced/genetics/*metabolism/pathology MH - RNA Interference MH - Receptors, CCR2/antagonists & inhibitors/genetics/metabolism MH - Signal Transduction MH - Silicon Dioxide/toxicity MH - Silicosis/genetics/*metabolism/pathology MH - Time Factors MH - Transfection MH - Up-Regulation OTO - NOTNLM OT - CCR2 OT - Fibroblast OT - MCP-1 OT - MCPIP1 OT - Migration OT - Silicosis EDAT- 2015/07/15 06:00 MHDA- 2016/01/14 06:00 CRDT- 2015/07/12 06:00 PHST- 2015/02/25 00:00 [received] PHST- 2015/06/28 00:00 [revised] PHST- 2015/07/02 00:00 [accepted] PHST- 2015/07/12 06:00 [entrez] PHST- 2015/07/15 06:00 [pubmed] PHST- 2016/01/14 06:00 [medline] AID - S0041-008X(15)30029-6 [pii] AID - 10.1016/j.taap.2015.07.002 [doi] PST - ppublish SO - Toxicol Appl Pharmacol. 2015 Oct 15;288(2):152-60. doi: 10.1016/j.taap.2015.07.002. Epub 2015 Jul 8.