Abstract:
:Mutations in the X-linked inhibitor of apoptosis (XIAP) have recently been identified in patients with the rare genetic disease, X-linked lymphoproliferative syndrome (XLP), which was previously thought to be solely attributable to mutations in a distinct gene, SAP. To further understand the roles of these two factors in the pathogenesis of XLP, we have compared mice deficient in Xiap with known phenotypes of Sap-null mice. We show here that in contrast to Sap-deficient mice, animals lacking Xiap have apparently normal NKT cell development and no apparent defect in humoral responses to T cell-dependent antigens. However, Xiap-deficient cells were more susceptible to death upon infection with the murine herpesvirus MHV-68 and gave rise to more infectious virus. These differences could be rescued by restoration of XIAP. These data provide insight into the differing roles of XIAP and SAP in the pathogenesis of XLP.
journal_name
Cell Immunoljournal_title
Cellular immunologyauthors
Rumble JM,Oetjen KA,Stein PL,Schwartzberg PL,Moore BB,Duckett CSdoi
10.1016/j.cellimm.2009.05.017subject
Has Abstractpub_date
2009-01-01 00:00:00pages
82-9issue
1eissn
0008-8749issn
1090-2163pii
S0008-8749(09)00105-1journal_volume
259pub_type
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