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Phenotype and pathological significance of MCAM+ (CD146+) T cell subset in psoriatic arthritis
Molecular Biology Reports ( IF 2.8 ) Pub Date : 2021-09-07 , DOI: 10.1007/s11033-021-06678-2
Smriti K Raychaudhuri 1, 2 , Christine Abria 2 , Siba P Raychaudhuri 1, 2
Affiliation  

Background

CD146 (MCAM-melanoma cell adhesion molecule) is a cell surface adhesion molecule for Laminin 411. T cells expressing MCAM are mainly responsible for IL-17 production. IL-17 secreting T helper cells (Th17 cells) are critical for the pathogenesis of psoriatic arthritis (PsA). Here we hypothesized enrichment of CD146+IL-17+ memory T cells in PsA synovium and studied the association of CD146 expression and CD4+IL-17+ activated memory (CD11a+CD45RO+) T cells in synovial fluid and blood of PSA, rheumatoid arthritis (RA, a positive control) and osteoarthritis (OA) patients.

Methods

Hi-D FACS studies were done to identify IL-17 in CD4+CD146+CD45RO+ and CD8+CD146+CD45RO+ T cells.

Results

We observed that effector CD146+(MCAM+) T cells are enriched at the synovial inflammation site in PsA.

Conclusion

As CD146+ T cells are a key resource for IL-17 it is likely that the enrichment of these MCAM+ pathologic cells are critical for the disease process of PsA.



中文翻译:

MCAM+(CD146+)T细胞亚群在银屑病关节炎中的表型和病理学意义

背景

CD146(MCAM-黑色素瘤细胞粘附分子)是层粘连蛋白 411 的细胞表面粘附分子。表达 MCAM 的 T 细胞主要负责 IL-17 的产生。分泌 IL-17 的 T 辅助细胞(Th17 细胞)对于银屑病关节炎 (PsA) 的发病机制至关重要。在这里,我们假设 CD146 + IL-17 +记忆 T 细胞在 PsA 滑膜中的富集,并研究了 CD146 表达与 CD4 + IL-17 +活化记忆 (CD11a + CD45RO + ) T 细胞在滑膜液和 PSA、类风湿病血液中的关联关节炎(RA,阳性对照)和骨关节炎(OA)患者。

方法

进行了 Hi-D FACS 研究以鉴定 CD4 + CD146 + CD45RO +和 CD8 + CD146 + CD45RO + T 细胞中的 IL-17。

结果

我们观察到效应 CD146 + (MCAM + ) T 细胞在 PsA 的滑膜炎症部位富集。

结论

由于 CD146 + T 细胞是 IL-17 的关键资源,因此这些 MCAM +病理细胞的富集可能对 PsA 的疾病过程至关重要。

更新日期:2021-09-08
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