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Nat Rev Immunol. 2010 Aug;10(8):594-604. doi: 10.1038/nri2815.

The X chromosome in immune functions: when a chromosome makes the difference.

Author information

1
Department for Molecular Biomedical Research, Flanders Institute for Biotechnology (VIB), 9052 Ghent, Belgium. Claude.Libert@dmbr.vib-ugent.be

Abstract

In response to various immune challenges, females show better survival than males; the X chromosome has an important role in this immunological advantage. X chromosome-linked diseases are usually restricted to males, who have only one copy of the X chromosome; however, females are more prone to autoimmune diseases, and the X chromosome may be involved in the breakdown of self tolerance. Several hypotheses have been proposed in recent years that support a role for the X chromosome in shaping autoimmune responses. Here, we review the main mechanisms responsible for increased immune activity in females. This provides a survival advantage in the face of pathogenic insult but can also enhance the susceptibility of females to autoimmunity.

PMID:
20651746
DOI:
10.1038/nri2815
[Indexed for MEDLINE]

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