A model for niemann-pick type C disease in the nematode Caenorhabditis elegans.

Niemann-Pick type C (NP-C) disease is a progressive neurodegenerative disorder characterized by the inappropriate accumulation of unesterified cholesterol in lysosomes [1]. NP-C patients show various defects including hepatosplenomegaly, ataxia, dystonia and dementia. Most cases of NP-C are associated with inactivating mutations of the NPC1 gene [2], which encodes a protein implicated in the retrograde transport of sterols and other cargo from lysosomes [3]. Furthermore, localization of the NPC1 protein to lysosomal/endosomal compartments is essential for proper transport [4]. To create a model of NP-C disease in a simple, genetically tractable organism, we generated deletion mutations in two Caenorhabditis elegans homologs of the human NPC1 gene, designated npc-1 and npc-2. Animals mutant for npc-1 developed slowly, laid eggs prematurely, and were hypersensitive to cholesterol deprivation. Furthermore, npc-1; npc-2 double-mutant animals inappropriately formed dauer larvae under favorable growth conditions. These phenotypes in C. elegans provide a model system for both genetic and chemical suppressor screening that could identify promising drug targets and leads for NP-C disease.

• Publication year

  2000

• Venue

  Current Biology

• Publication date

  2000-05-01

• Fields of study

  Biology, Medicine

• Identifiers
  DOI 10.1016/S0960-9822(00)00468-1PMID 10801441
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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