Extrathymic differentiation and antigen response of αβT lymphocytes in pregnancy

Extrathymic differentiation and antigen response of αβT lymphocytes in pregnancy We studied reactivity of αβT-lymphocytes in CBA pregnant females toward male antigens and the presence of gene rearrangement in T-cells antigen receptor in peripheral lymphoid organs of mice in the case of three breeding variants: CBA × BALB/c (normal allogenic pregnancy), CBA × CBA (syngenetic pregnancy), and CBA × DBA/2 (prone to abortion combination). It was shown that proliferative response of αβT-lymphocytes in pregnant CBA females to male spleen cells was the most marked at normal allogenic pregnancy, the least marked at syngenic pregnancy, and was not observed at the combination CBA × DBA/2. In addition, cells of paraaortic lymphatic nodes (draining uterus) respond to male antigen reliably more effectively than lymphocytes in mesenterial and axillary lymphatic nodes. Simultaneous estimation of recombinase RAG-1, the key enzyme in rearrangement of T-receptor genes, revealed similar principles: predominant activity of recombinase in T-lymphocytes in paraaortal lymphatic nodes of CBA pregnant females. This points to the relationship between extrathymic rearrangement of antigen receptor genes and change in the antigen-detecting repertoire of these cells. The possible biological significance of the discovered phenomenon is discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Developmental Biology Springer Journals

Extrathymic differentiation and antigen response of αβT lymphocytes in pregnancy

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Publisher
Springer Journals
Copyright
Copyright © 2013 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Developmental Biology; Animal Anatomy / Morphology / Histology
ISSN
1062-3604
eISSN
1608-3326
D.O.I.
10.1134/S1062360413020069
Publisher site
See Article on Publisher Site

Abstract

We studied reactivity of αβT-lymphocytes in CBA pregnant females toward male antigens and the presence of gene rearrangement in T-cells antigen receptor in peripheral lymphoid organs of mice in the case of three breeding variants: CBA × BALB/c (normal allogenic pregnancy), CBA × CBA (syngenetic pregnancy), and CBA × DBA/2 (prone to abortion combination). It was shown that proliferative response of αβT-lymphocytes in pregnant CBA females to male spleen cells was the most marked at normal allogenic pregnancy, the least marked at syngenic pregnancy, and was not observed at the combination CBA × DBA/2. In addition, cells of paraaortic lymphatic nodes (draining uterus) respond to male antigen reliably more effectively than lymphocytes in mesenterial and axillary lymphatic nodes. Simultaneous estimation of recombinase RAG-1, the key enzyme in rearrangement of T-receptor genes, revealed similar principles: predominant activity of recombinase in T-lymphocytes in paraaortal lymphatic nodes of CBA pregnant females. This points to the relationship between extrathymic rearrangement of antigen receptor genes and change in the antigen-detecting repertoire of these cells. The possible biological significance of the discovered phenomenon is discussed.

Journal

Russian Journal of Developmental BiologySpringer Journals

Published: Mar 21, 2013

References

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