PMID- 33130921 OWN - NLM STAT- MEDLINE DCOM- 20211109 LR - 20211109 IS - 1573-2576 (Electronic) IS - 0360-3997 (Print) IS - 0360-3997 (Linking) VI - 44 IP - 2 DP - 2021 Apr TI - Motility and Mechanical Properties of Dendritic Cells Deteriorated by Extracellular Acidosis. PG - 737-745 LID - 10.1007/s10753-020-01373-z [doi] AB - Dendritic cells (DCs) are the most powerful antigen-presenting cells known to date and play an important role in initiating and amplifying both innate and adaptive immune responses. Extracellular acidosis is an important hallmark of a variety of inflammatory processes and solid tumors. However, few studies have focused on the effect of extracellular acidosis on DCs and their functions. Cellular mechanical properties reflect the relationship between cell structure and function, including cytoskeleton (especially F-actin organization), membrane negative charges, membrane fluidity, and osmotic fragility. The study investigated the effects of extracellular acidosis on the DCs functions from the perspective of cellular migration and mechanical properties. The results showed that migration ability, F-actin contents, and membrane negative charges of DCs were reduced by extracellular acidosis no matter whether LPS stimulated its maturation or not. And these functions could not return to normal after removing acidic microenvironment, which revealed that the function impairment induced by extracellular acidosis might be irreversible. In addition, the proliferation capacity of stimulated allogeneic T cells was impaired by extracellular acidosis. Our results suggest extracellular acidosis may play an immunosuppressive role in DCs-mediated immune process. FAU - Tong, Lu AU - Tong L AD - School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China. FAU - Yue, Ping AU - Yue P AD - School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China. FAU - Yang, Yingying AU - Yang Y AD - School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China. FAU - Huang, Jin AU - Huang J AD - School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China. FAU - Zeng, Zhu AU - Zeng Z AD - School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China. zengzhu100@sina.com. FAU - Qiu, Wei AU - Qiu W AUID- ORCID: 0000-0001-8823-5733 AD - School of Biology and Engineering, Guizhou Medical University, Guiyang, 550025, China. qwei407@163.com. LA - eng GR - 31960206/National Natural Science Foundation of China (CN)/ GR - gzwjkj2019-1-078/Department of Health of Guizhou Province/ GR - J-[2020]1Y334/Guizhou Science and Technology Department/ PT - Journal Article DEP - 20201031 PL - United States TA - Inflammation JT - Inflammation JID - 7600105 SB - IM MH - Acidosis/*immunology/physiopathology MH - Animals MH - Cell Movement/*immunology MH - Cell Proliferation MH - Cell Survival/immunology MH - Cells, Cultured MH - Cellular Microenvironment/*immunology MH - Cytoskeleton/*immunology MH - Dendritic Cells/*immunology/physiology MH - Membrane Fluidity/*immunology MH - Mice MH - Mice, Inbred C57BL MH - Microscopy, Confocal MH - Osmotic Fragility/*immunology PMC - PMC7985054 OTO - NOTNLM OT - cellular mechanical properties OT - dendritic cells OT - extracellular acidosis OT - motility COIS- The authors declare that they have no conflict of interest. EDAT- 2020/11/02 06:00 MHDA- 2021/11/10 06:00 PMCR- 2020/10/31 CRDT- 2020/11/01 20:42 PHST- 2020/03/30 00:00 [received] PHST- 2020/10/21 00:00 [accepted] PHST- 2020/11/02 06:00 [pubmed] PHST- 2021/11/10 06:00 [medline] PHST- 2020/11/01 20:42 [entrez] PHST- 2020/10/31 00:00 [pmc-release] AID - 10.1007/s10753-020-01373-z [pii] AID - 1373 [pii] AID - 10.1007/s10753-020-01373-z [doi] PST - ppublish SO - Inflammation. 2021 Apr;44(2):737-745. doi: 10.1007/s10753-020-01373-z. Epub 2020 Oct 31.