人类单克隆甲状腺刺激自身抗体
J Sanders1, M Evans, L D K E Premawardhana
1FIRS Laboratories, RSR Ltd, Parc Ty Glas, Llanishen, CF14 5DU, Cardiff, UK.
Lancet (London, England)
|July 18, 2003
概括
研究人员产生了一种单克隆自身抗体 (MAb),通过向甲状腺刺激激素 (TSH) 受体 (TSHR) 来刺激甲状腺. 这一发现有助于理解格雷夫斯病的发病因子.
科学领域:
- 内分泌学 在内分泌学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 格雷夫斯病是一种自身免疫性疾病,其特征是甲状腺过度刺激.
- 甲状腺刺激激素受体 (TSHR) 自体抗体是格雷夫斯病发病的关键调解者.
- 鉴定这些自身抗体对于了解疾病机制至关重要.
研究的目的:
- 从一个Graves病患者中产生和表征一种具有甲状腺刺激活性的单克隆自身抗体 (MAb).
- 调查MAb与TSHR的结合亲和力和功能活性.
- 评估MAb作为研究Graves病的工具的潜力.
主要方法:
- 从患者的淋巴细胞产生单克隆自身抗体 (MAb).
- 评估MAb与TSH受体 (TSHR) 的结合亲和力,使用标记的TSH抑制试验.
- 测量TSHR感染的细胞中循环AMP的产生,以评估TSH类活性.
- 测试血清TSHR自身抗体对MAb结合的抑制作用.
主要成果:
- 成功生成了一种具有强烈甲状腺刺激活性的MAb.
- MAb及其Fab片段对TSHR表现出高亲和度的结合.
- MAb抑制了标记的TSH结合,并刺激了循环AMP的产生,模仿TSH的作用.
- 血清TSHR自身抗体有效抑制了标记MAb与TSHR的结合.
结论:
- 产生的人类单克隆自身抗体具有与在Graves病中发现的内源TSHR自身抗体相一致的特征.
- 这种MAb作为一个有价值的工具,用于进一步研究格雷夫斯病的发病因子.
- 这种MAb的可用性为研究TSHR介导的自身免疫性甲状腺疾病开辟了新的途径.
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