Journal
JOURNAL OF CELLULAR AND MOLECULAR MEDICINE
Volume 24, Issue 23, Pages 14086-14098Publisher
WILEY
DOI: 10.1111/jcmm.16020
Keywords
exosome; macrophage inflammatory protein-1 alpha/beta; migration; oral lichen planus; T cell
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Funding
- National Natural Science Foundation of China [81771080, 81970949, 81371147]
- State Key Laboratory of Oral Diseases [SKLOD2020OF01]
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Oral lichen planus (OLP) is a T cell-mediated chronic inflammatory disease with uncertain aetiology. Exosomes are nanosized particles with biological capacities. Here, we aimed to study the effects of T cell-derived exosomes (T-exos) on the pathogenesis of OLP and its mechanism. T-exos were incubated with Jurkat cells for 48 hours, and 26 cytokines in the supernatant were measured by luminex assay. The expression of macrophage inflammatory protein (MIP)-1 alpha/beta was detected using immunohistochemistry and ELISA; that of CCR1/3/5 on peripheral T cells was determined by flow cytometry. Transwell assay was performed to investigate the chemotactic effect of MIP-1 alpha/beta, and cells in the lower chambers were examinated by flow cytometry. As a result, OLP T-exos elevated the production of MIP-1 alpha/beta, which were highly expressed in OLP tissues and plasma. CCR1/5 were markedly expressed on OLP peripheral T cells, and the majority of CCR1/5(+) T cells were CD8(+) T cells. Besides, MIP-1 alpha/beta promoted the migration of OLP mononuclear cells, while inhibiting CCR1/5 significantly decreased the trafficking of mononuclear cells, especially that of CD8(+) T cells. Conclusively, OLP T-exos-induced MIP-1 alpha/beta may drive the trafficking of CD8(+) T cells after binding with CCR1/5 in OLP, contributing to the development of OLP.
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