CD40 Ligand-Deficient T Cells from X-Linked Hyper-IgM Syndrome Carriers Have Intrinsic Priming Capability

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CD40 ligand-deficient T cells from X-linked hyper-IgM syndrome carriers have intrinsic priming capability.

Deficiency in CD40 ligand (CD40L) expression is associated with impaired T cell immunity in mouse models and in humans. Previous studies have indicated that this is due to the failure of induction of extrinsic costimulatory molecules. However, other studies have suggested that CD40L is an intrinsic costimulatory molecule. The X-linked hyper-IgM syndrome (XHIM) is a primary immunodeficiency caus...

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Partial immune reconstitution of X-linked hyper IgM syndrome with recombinant CD40 ligand.

X-linked hyper IgM syndrome (XHM) is a combined immune deficiency disorder caused by genetic alterations in CD40 ligand. The purpose of this study was to investigate the safety and efficacy of recombinant CD40 ligand (rCD40L) in the treatment of the disease. Three children were administered rCD40L subcutaneously 3 times per week at 0.03 mg/kg for 22 weeks, and after a 12-week drug-free interval...

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CD40 Ligand Deficient C57BL/6 Mouse Is a Potential Surrogate Model of Human X-Linked Hyper IgM (X-HIGM) Syndrome for Characterizing Immune Responses against Pathogens

Individuals with X-HIGM syndrome fail to express functional CD40 ligand; consequently they cannot mount effective protective antibody responses against pathogenic bacteria. We evaluated, compared, and characterized the humoral immune response of wild type (WT) and C57-CD40L deficient (C57-CD40L(-/-)) mice infected with Citrobacter rodentium. Basal serum isotype levels were similar for IgM and I...

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CLINICAL TRIALS AND OBSERVATIONS Partial immune reconstitution of X-linked hyper IgM syndrome with recombinant CD40 ligand

1Laboratory of Host Defenses, National Institute of Allergy and Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD; 2Department of Critical Care Medicine, NIH Clinical Center, Bethesda, MD; 3Metabolism Branch, National Cancer Institute (NCI), Bethesda, MD; 4Laboratory of Immunoregulation, NIAID, NIH, Bethesda, MD; 5Laboratory of Pathology, NCI, Bethesda, MD; 6Amgen, ...

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A novel mutation in the CD40 ligand gene in a Chinese boy with X-linked hyper-IgM syndrome.

X-linked hyper-IgM Syndrome (XHIGM) is caused by a mutation of CD40 ligand (CD40L), which is normally expressed on activated CD4+ T cells and is responsible for immunoglobulin class switching. A 7-year-old boy with recurrent sino-pulmonary infections since the age of 3 months had normal CD3+, CD4+, CD8+T lymphocytes, and CD19+B lymphocytes and NK cells, but significantly elevated IgM and extrem...

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ژورنال

عنوان ژورنال: The Journal of Immunology

سال: 2002

ISSN: 0022-1767,1550-6606

DOI: 10.4049/jimmunol.168.3.1473