BTN2A2-Ig protein inhibits the differentiation of pathogenic Th17 cells and attenuates EAE in mice

Huang, Ying; Han, Feng; Li, Jiaju; Li, Yuandi; Gao, Jie; Lai, Laijun; Luo, Pei; Su, Min; Hu, Rong

doi:10.1016/j.imlet.2023.06.009

Immunology Letters

2023

DOI: 10.1016/j.imlet.2023.06.009

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BTN2A2-Ig protein inhibits the differentiation of pathogenic Th17 cells and attenuates EAE in mice

Ying Huang

Feng Han

Jiaju Li

et al.

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2024

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A Ménage à trois: NLRC5, immunity, and metabolism

Brunschwiler,

Nakka,

Guerra

et al. 2024

Front. Immunol.

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The nucleotide-binding and oligomerization domain-like receptors (NLRs) NLR family CARD domain-containing protein 5 (NLRC5) and Class II Major Histocompatibility Complex Transactivator (CIITA) are transcriptional regulators of major histocompatibility complex (MHC) class I and class II genes, respectively. MHC molecules are central players in our immune system, allowing the detection of hazardous ‘non-self’ antigens and, thus, the recognition and elimination of infected or transformed cells from the organism. Recently, CIITA and NLRC5 have emerged as regulators of selected genes of the butyrophilin (BTN) family that interestingly are located in the extended MHC locus. BTNs are transmembrane proteins exhibiting structural similarities to B7 family co-modulatory molecules. The family member BTN2A2, which indeed contributes to the control of T cell activation, was found to be transcriptionally regulated by CIITA. NLRC5 emerged instead as an important regulator of the BTN3A1, BTN3A2, and BTN3A3 genes. Together with BTN2A1, BTN3As regulate non-conventional Vγ9Vδ2 T cell responses triggered by selected metabolites of microbial origin or accumulating in hematologic cancer cells. Even if endogenous metabolites conform to the canonical definition of ‘self’, metabolically abnormal cells can represent a danger for the organism and should be recognized and controlled by immune system cells. Collectively, new data on the role of NLRC5 in the expression of BTN3As link the mechanisms regulating canonical ‘non-self’ presentation and those marking cells with abnormal metabolic configurations for immune recognition, an evolutionary parallel that we discuss in this perspective review.

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A Ménage à trois: NLRC5, immunity, and metabolism

Brunschwiler,

Nakka,

Guerra

et al. 2024

Front. Immunol.

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BTN2A2-Ig protein inhibits the differentiation of pathogenic Th17 cells and attenuates EAE in mice

Cited by 1 publication

References 30 publications

A Ménage à trois: NLRC5, immunity, and metabolism

A Ménage à trois: NLRC5, immunity, and metabolism

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