乳腺上皮细胞衍生的免疫球蛋白的表达和功能
Qinyuan Liao1, Dongyang Jiang2, Shuai Zhang3
1Department of Immunology, Guilin Medical University, Guilin, Guangxi, China.
Advances in experimental medicine and biology
|July 5, 2024
概括
乳腺中的非B细胞产生免疫球蛋白 (Igs). 在哺乳期,这些Igs有助于新生儿免疫力,但在乳腺癌中,一种特定的化IgG (SIA-IgG) 促进瘤进展和转移.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 细胞生物学 细胞生物学
背景情况:
- 越来越多的证据表明,包括乳腺上皮细胞在内的非B细胞可以产生免疫球蛋白 (Igs).
- 正常的乳腺上皮细胞在哺乳期间产生IgG和IgA,可能有助于新生儿免疫力.
- 非B细胞衍生的IgG在乳腺癌中表达高,与患者预后不佳相关.
研究的目的:
- 在生理和病理条件下研究乳腺上皮细胞产生的免疫球蛋白在生理和病理条件下的双重作用.
- 鉴定乳腺癌干细胞中发现的一种特定形式的IgG,即化IgG (SIA-IgG),并评估其功能.
主要方法:
- 在正常和恶性乳腺组织中分析免疫球蛋白表达.
- 在IgG上特定的甘氨酸修饰的识别和表征 (在Asn162处的化).
- 在体外和体内测试以评估SIA-IgG对癌细胞迁移,入侵,自我更新和瘤发生性的功能影响.
主要成果:
- 乳腺上皮细胞表达IgG和IgA,它们在哺乳期分泌到牛奶中,有助于新生儿免疫力.
- 在乳腺癌干细胞/原始细胞中发现了一种独特的化IgG (SIA-IgG) 变异.
- SIA-IgG显著增强了乳腺癌细胞迁移,侵入性,转移,自我更新和瘤性.
结论:
- 乳腺上皮细胞根据生理或病理背景产生具有独特生物活性的免疫球蛋白.
- 虽然在哺乳期对新生儿免疫有好处,但这些上皮衍生的Ig,特别是SIA-IgG,在乳腺癌中表现出致癌性质,促进瘤的进展.
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