Autoreactive B cells in the marginal zone that express dual receptors.

Autoreactive B cells in the marginal zone that express dual receptors.
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DOI:
10.1084/jem.20011453
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发表时间:
2002-01-21
期刊:
The Journal of experimental medicine
影响因子:
--
通讯作者:
Weigert M
Weigert M
中科院分区:
其他
文献类型:
--
作者:
Li Y;Li H;Weigert M

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同种异型和同型排斥是大多数淋巴细胞的特性。这种特性的原因尚不清楚,但它保证了单一受体的高浓度,并且有效的正选择和负选择可能需要阈值数量的受体。即使在功能性受体形成后,受体编辑也通过维持重组来妥协排斥。因此,出现了表达多种受体的B细胞。我们研究了这样的B细胞,其中两个受体中的一个是反自我的,发现这些部分自身反应的B细胞聚集在边缘区。这些细胞在这个位置的限制可能有助于阻止它们进行多样化和发展成完全的自身反应性B细胞。
Allotype and isotype exclusion is a property of most lymphocytes. The reason for this property is not known but it guarantees a high concentration of a single receptor, and threshold numbers of receptors may be required for efficient positive and negative selection. Receptor editing compromises exclusion by sustaining recombination even after a functional receptor is formed. Consequently, B cells expressing multiple receptors arise. We have studied such B cells in which one of the two receptors is anti-self, and find that these partially autoreactive B cells accumulate in the marginal zone. The restriction of these cells in this location may help to prevent them from undergoing diversification and developing into fully autoreactive B cells.
Kappa+ lambda+双受体B细胞存在于人的外围曲目中。
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