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Identification and Regulation of TCRαβ⁺CD8αα⁺ Intraepithelial Lymphocytes in Murine Oral Mucosa.

ABSTRACT: TCRαβ⁺CD8αα⁺ intraepithelial lymphocytes (IELs) are abundant in gastrointestinal (GI) tract and play an important role in regulation of mucosal immunity and tolerance in the gut. However, it is unknown whether TCRαβ⁺CD8αα⁺ IELs exist in the oral mucosa and if yes, what controls their development. We here identified and characterized TCRαβ⁺CD8αα⁺ IELs from the murine oral mucosa. We showed that the number and function of TCRαβ⁺CD8αα⁺ IELs were regulated by TGF-β. We further revealed that oral TCRαβ⁺CD8αα⁺ IELs could be altered under systemic inflammatory conditions and by antibiotic treatment at the neonatal age of the mice. Our findings have revealed a previously unrecognized population of oral IELs that may regulate oral mucosal immune responses.

SUBMITTER: Wu R

PROVIDER: S-EPMC7417446 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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Identification and Regulation of TCRαβ+CD8αα+ Intraepithelial Lymphocytes in Murine Oral Mucosa.

Wu Ruiqing R Zhang Dunfang D Zanvit Peter P Jin Wenwen W Wang Hao H Chen WanJun W

Frontiers in immunology 20200804

TCRαβ+CD8αα+ intraepithelial lymphocytes (IELs) are abundant in gastrointestinal (GI) tract and play an important role in regulation of mucosal immunity and tolerance in the gut. However, it is unknown whether TCRαβ+CD8αα+ IELs exist in the oral mucosa and if yes, what controls their development. We here identified and characterized TCRαβ+CD8αα+ IELs from the murine oral mucosa. We showed that the number and function of TCRαβ ...[more]

PMID: 32849598

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