Systemic inflammation in glucocerebrosidase-deficient mice with minimal glucosylceramide storage.
Gaucher disease, the most common lysosomal storage disease, is caused by a deficiency of glucocerebrosidase resulting in the impairment of glucosylceramide degradation. The hallmark of the disease is the presence of the Gaucher cell, a macrophage containing much of the stored glucosylceramide found in tissues, which is believed to cause many of the clinical manifestations of the disease. We have developed adult mice carrying the Gaucher disease L444P point mutation in the glucocerebrosidase (Gba) gene and exhibiting a partial enzyme deficiency. The mutant mice demonstrate multisystem inflammation, including evidence of B cell hyperproliferation, an aspect of the disease found in some patients. However, the mutant mice do not accumulate large amounts of glucosylceramide or exhibit classic Gaucher cells in tissues.
Mizukami
Hiroki
H
Genetics of Development and Disease Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.
Mi
Yide
Y
Wada
Ryuichi
R
Kono
Mari
M
Yamashita
Tadashi
T
Liu
Yujing
Y
Werth
Norbert
N
Sandhoff
Roger
R
Sandhoff
Konrad
K
Proia
Richard L
RL
D000818:Animals; D005776:Gaucher Disease / Q000201:enzymology / Q000473:pathology / Q000503:physiopathology; D005962:Glucosylceramidase / Q000172:deficiency* / Q000235:genetics / Q000378:metabolism; D005963:Glucosylceramides / Q000378:metabolism*; D006801:Humans; D007249:Inflammation / Q000201:enzymology* / Q000473:pathology / Q000503:physiopathology; D008099:Liver / Q000473:pathology; D008168:Lung / Q000473:pathology; D008198:Lymph Nodes / Q000473:pathology; D008264:Macrophages / Q000378:metabolism / Q000648:ultrastructure; D051379:Mice; D008810:Mice, Inbred C57BL; D018345:Mice, Knockout; D008822:Mice, Transgenic; D012867:Skin / Q000473:pathology
D005963:Glucosylceramides; D005962:Glucosylceramidase