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体内和体外对大肠杆菌脂多糖耐受性的快速打破

Rapid breaking of tolerance against Escherichia coli lipopolysaccharide in vivo and in vitro.

作者信息

Sjöberg O

出版信息

J Exp Med. 1972 Apr 1;135(4):850-9. doi: 10.1084/jem.135.4.850.

Abstract

The breaking of tolerance against the lipopolysaccharide from E. coli 055:B5 was studied. It was found that immune responsiveness recovered very slowly in vivo, tolerance still existing 3 wk after the last tolerizing injection. However, if spleen cells from tolerant mice were transferred into irradiated syngeneic recipients, the tolerant state was readily broken. Spleen cells transferred 3 days after the last tolerance-maintaining dose did not respond, whereas cells transferred on day 5 or 7 responded equally well as normal spleen cells. It was also possible to break tolerance by incubating tolerant spleen cells, which did not respond after transfer, for 20 hr in vitro before transfer into irradiated recipients. The results suggest that there exist reversibly inactivated cells in tolerant animals and that these cells can be reactivated upon removal of the cells to a neutral environment.

摘要

对大肠杆菌055:B5脂多糖耐受性的打破进行了研究。发现在体内免疫反应性恢复非常缓慢,在最后一次给予耐受剂量注射后3周仍存在耐受性。然而,如果将耐受小鼠的脾细胞转移到经照射的同基因受体中,耐受状态很容易被打破。在最后一次维持耐受剂量后3天转移的脾细胞没有反应,而在第5天或第7天转移的细胞与正常脾细胞反应一样好。通过在体外将转移后无反应的耐受脾细胞培养20小时,然后再转移到经照射的受体中,也有可能打破耐受性。结果表明,在耐受动物中存在可逆性失活的细胞,并且这些细胞在转移到中性环境中后可以被重新激活。

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Classification of immunological unresponsiveness and tolerance.免疫无反应性与耐受性的分类。
Proc R Soc Med. 1973 May;66(5):468-71. doi: 10.1177/003591577306600524.

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