Clinical endocrinology · 2023
Association of B7H3 and B7H4 gene polymorphisms and protein expression with the development and prognosis of autoimmune thyroid diseases.
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Ozaki Haruka, Inoue Naoya, Iwatani Yoshinori, Watanabe Ayano, Yamamoto Mayu, Kitahara Nozomi, Tanikawa Shohei, Noguchi Yusuke, Hidaka Yoh, Watanabe Mikio
Аннотация
BACKGROUND: The prognosis of autoimmune thyroid diseases (AITDs), including Graves' disease (GD) and Hashimoto's disease (HD), varies among patients. B7-H3 and B7-H4, members of the B7 family of proteins, regulate immune response. To clarify the association of B7-H3 and B7-H4 with the pathogenesis and prognosis of AITDs, we examined the expression of the soluble and membrane form of B7-H3 and B7-H4 and genotyped single nucleotide polymorphisms (SNPs) in the B7H3 and B7H4 genes.
METHODS: We examined the expression of the membrane form of B7-H3 and B7-H4 by flow cytometry and their soluble forms by enzyme-linked immunosorbent assay. We genotyped SNPs in B7H3 and B7H4 in 187 GD patients, 217 HD patients, and 110 healthy volunteers using the PCR-RFLP method.
RESULTS: The frequency of the B7H3 rs3816661 CC genotype was higher in patients with severe HD. G carriers of B7H4 rs10754339 A/G and B7H4 rs13505 T/G were more frequent in patients with AITD. A carrier of B7H4 rs10158166 A/G and C carriers of B7H4 rs3806373 C/T were more frequent in patients with intractable GD. The proportion of B7-H3+ monocytes was higher in the CC genotype of B7H3 rs3816661 C/T than in the other genotypes and was lower in patients with GD and HD than in healthy controls. The concentration of soluble B7-H4 was lower in the TG genotype of B7H4 rs13505 T/G than in the TT genotype and was higher in patients with AITD than in healthy controls.
CONCLUSION: B7H3 and B7H4 are associated with AITD susceptibility and prognosis.
METHODS: We examined the expression of the membrane form of B7-H3 and B7-H4 by flow cytometry and their soluble forms by enzyme-linked immunosorbent assay. We genotyped SNPs in B7H3 and B7H4 in 187 GD patients, 217 HD patients, and 110 healthy volunteers using the PCR-RFLP method.
RESULTS: The frequency of the B7H3 rs3816661 CC genotype was higher in patients with severe HD. G carriers of B7H4 rs10754339 A/G and B7H4 rs13505 T/G were more frequent in patients with AITD. A carrier of B7H4 rs10158166 A/G and C carriers of B7H4 rs3806373 C/T were more frequent in patients with intractable GD. The proportion of B7-H3+ monocytes was higher in the CC genotype of B7H3 rs3816661 C/T than in the other genotypes and was lower in patients with GD and HD than in healthy controls. The concentration of soluble B7-H4 was lower in the TG genotype of B7H4 rs13505 T/G than in the TT genotype and was higher in patients with AITD than in healthy controls.
CONCLUSION: B7H3 and B7H4 are associated with AITD susceptibility and prognosis.