Abstract
Caspases are cysteine proteases that mediate programmed cell death in phylogenetically diverse multicellular organisms. We report here two kindreds with autoimmune lymphoproliferative syndrome (ALPS) type II, characterized by abnormal lymphocyte and dendritic cell homeostasis and immune regulatory defects, that harbor independent missense mutations in Caspase 10. These encode amino acid substitutions that decrease caspase activity and interfere with death receptor-induced apoptosis, particularly that stimulated by Fas ligand and TRAIL. These results provide evidence that inherited nonlethal caspase abnormalities cause pleiotropic apoptosis defects underlying autoimmunity in ALPS type II.
MeSH Terms
Adaptor Proteins, Signal Transducing
Amino Acid Substitution
Apoptosis
Apoptosis Regulatory Proteins
Autoimmune Diseases/enzymology,genetics,immunology
Breast Neoplasms
Carrier Proteins/physiology
Caspase 10
Caspases/genetics
Cells, Cultured
Child
DNA Primers
Dendritic Cells/pathology,physiology
Fas Ligand Protein
Fas-Associated Death Domain Protein
Female
HeLa Cells
Homeostasis
Humans
Lymphocytes/pathology,physiology
Lymphoproliferative Disorders/enzymology,genetics,immunology
Membrane Glycoproteins/physiology
Mutation, Missense
Recombinant Proteins/metabolism
Reverse Transcriptase Polymerase Chain Reaction
TNF-Related Apoptosis-Inducing Ligand
Transfection
Tumor Necrosis Factor-alpha/physiology
fas Receptor/physiology
Chemicals
Adaptor Proteins, Signal Transducing
Apoptosis Regulatory Proteins
Carrier Proteins
DNA Primers
FADD protein, human
FASLG protein, human
Fas Ligand Protein
Fas-Associated Death Domain Protein
Membrane Glycoproteins
Recombinant Proteins
TNF-Related Apoptosis-Inducing Ligand
TNFSF10 protein, human
Tumor Necrosis Factor-alpha
fas Receptor
Caspase 10
Caspases
CASP10 protein, human
Authors & Affiliations
10 authors, click to expand affiliations / ORCID
Wang J
Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.
Zheng L
Lobito A
Chan F K
Dale J
Sneller M
Yao X
Puck J M
Straus S E
Lenardo M J