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Abstract
The nematode Caenorhabditis elegans is the simplest animal model available to study
human disease. In this review, the worm homologues for the 58 human genes involved
in lysosomal storage disorders and for 105 human genes associated with lysosomal function
have been compiled. Most human genes had at least one worm homologue. In addition,
the phenotypes of 147 mutants, in which these genes have been disrupted or knocked
down, have been summarized and discussed. The phenotypic spectrum of worm models of
lysosomal storage disorders varies from lethality to none obvious, with a large variety
of intermediate phenotypes. The genetic power of C. elegans provides a means to identify
genes involved in specific processes with relative ease. The overview of potential
lysosomal phenotypes presented here might be used as a starting point for the phenotypic
characterization of newly developed knock-out models or for the design of genetic
screens selecting for loss or gain of suitable knock-out model phenotypes. Screens
for genes involved in lysosomal biogenesis and function have been performed successfully
resulting in the cup and glo mutants, but screens involving subtle phenotypes are
likely to be difficult.