Characterization of lysosomes and lysosomal enzymes from Chediak-Higashi-syndrome cultured fibroblasts

Abstract
Chediak-Higashi-syndrome cultured skin fibroblasts were used to study the possible involvement of lysosomal enzymes and lysosomal dysfunction in this disorder. Our evidence indicated that Chediak-Higashi fibroblasts displayed a significant decrease in the specific activity of the acidic .alpha.-D-mannosidase (pH 4.2) compared with normal controls. Additional studies revealed a small, but significant, decrease in the rate of degradation of 125I-labelled .beta.-D-glucosidase that had been endocytosed into Chediak-Higashi cells.