PMID- 32660239 OWN - NLM STAT- MEDLINE DCOM- 20201127 LR - 20201127 IS - 1520-5851 (Electronic) IS - 0013-936X (Linking) VI - 54 IP - 16 DP - 2020 Aug 18 TI - Ambient PM Toxicity Is Correlated with Expression Levels of Specific MicroRNAs. PG - 10227-10236 LID - 10.1021/acs.est.0c03876 [doi] AB - Uncertainties regarding optimized air pollution control remain as the underlying mechanisms of city-specific ambient particulate matter (PM)-induced health effects are unknown. Here, water-soluble extracts of PMs collected from four global cities via automobile air-conditioning filters were consecutively injected three times by an amount of 1, 2, and 2 mg into the blood circulation of Wistar rats after filtration by a 0.45 mum pore size membrane. Acute health effects, such as immune and inflammatory responses and hemorrhage in alveoli, were observed right after the PM extraction injection. Significant differences between cities in biomarker tumor necrosis factor-alpha (TNF-alpha) and monocyte chemoattractant protein-1 (MCP-1) levels were detected following the second and third PM injections. Rats' inflammatory responses varied substantially with the injections of city-specific PMs. Repeated PM extract exposure rendered the rats more vulnerable to subsequent challenges, and downregulation of certain microRNAs was observed in rats. Among the studied miRNAs, miR-125b, and miR-21 were most sensitive to the PM exposure, exhibiting a negative dose-response-type relationship with a source-specific PM (oxidative potential) toxicity (r(2) = 0.63 and 0.57; p-values < 0.05). The results indicated that city-specific PMs could induce different health effects by selectively regulating different miRNAs, and that certain microRNAs, e.g., miR-125b and miR-21, may be externally mediated to neutralize PM-related health damages. FAU - Chen, Haoxuan AU - Chen H AUID- ORCID: 0000-0001-8398-9093 AD - State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. FAU - Zhang, Xiangyu AU - Zhang X AD - State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. FAU - Zhang, Ting AU - Zhang T AD - State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. FAU - Li, Xinyue AU - Li X AD - State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. FAU - Li, Jing AU - Li J AD - Linde + Robinson Laboratories, California Institute of Technology, Pasadena, California 91125, United States. FAU - Yue, Yang AU - Yue Y AD - Institute of Environmental Engineering, ETH Zurich, Zurich 8093, Switzerland. AD - Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dubendorf 8600, Switzerland. FAU - Wang, Minfei AU - Wang M AD - State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. FAU - Zheng, Yunhao AU - Zheng Y AUID- ORCID: 0000-0002-5788-886X AD - Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China. FAU - Fan, Hanqing AU - Fan H AD - Department of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States. FAU - Wang, Jing AU - Wang J AUID- ORCID: 0000-0003-2078-137X AD - Institute of Environmental Engineering, ETH Zurich, Zurich 8093, Switzerland. AD - Laboratory for Advanced Analytical Technologies, Empa, Swiss Federal Laboratories for Materials Science and Technology, Dubendorf 8600, Switzerland. FAU - Yao, Maosheng AU - Yao M AUID- ORCID: 0000-0002-1442-8054 AD - State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200727 PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 RN - 0 (Air Pollutants) RN - 0 (MicroRNAs) RN - 0 (Particulate Matter) SB - IM MH - *Air Pollutants/analysis/toxicity MH - Animals MH - Cities MH - *MicroRNAs/genetics MH - Particle Size MH - Particulate Matter/analysis/toxicity MH - Rats MH - Rats, Wistar EDAT- 2020/07/15 06:00 MHDA- 2020/11/28 06:00 CRDT- 2020/07/15 06:00 PHST- 2020/07/15 06:00 [pubmed] PHST- 2020/11/28 06:00 [medline] PHST- 2020/07/15 06:00 [entrez] AID - 10.1021/acs.est.0c03876 [doi] PST - ppublish SO - Environ Sci Technol. 2020 Aug 18;54(16):10227-10236. doi: 10.1021/acs.est.0c03876. Epub 2020 Jul 27.