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Microtubules are primarily responsible for facilitating long-distance transport of both proteins and organelles. Given the critical role of this process in cellular function, it is not surprising that perturbation of microtubule-based transport can lead to diverse phenotypes in humans, including cancer and neurodegenerative disorders such as Alzheimer or Huntington disease. Recent investigations have also indicated that defects in specialized microtubule-based transport systems, such as mutations affecting the transport of protein particles along the length of cilia (intraflagellar transport) can cause retinal dystrophy, polycystic kidney disease or more complex syndromic phenotypes, such as Bardet-Biedl syndrome. In this review, we discuss recent findings implicating defects in microtubule-associated transport and motor proteins in a variety of diseases, particularly the role of defective microtubular transport in neurological and ciliary disease. These defects frequently display phenotypic consequences that manifest as human disease yet do not cause organismal lethality.Received 7 Janury 2005; received after revision 23 February 2005; accepted 21 March 2005 相似文献
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Nuclear distribution gene C homolog (NudC) is a highly conserved gene. It has been identified in different species from fungi to mammals. The high degree of conservation,
in special in the nudC domain, suggests that they are genes with essential functions. Most of the identified genes in the family have been implicated
in cell division through the regulation of cytoplasmic dynein. As for mammalian genes, human NUDC has been implicated in the migration and proliferation of tumor cells and has therefore been considered a possible therapeutic
target. There is evidence suggesting that mammalian NudC is also implicated in the regulation of the inflammatory response and in thrombopoiesis. The presence of these other functions
not related to the interaction with molecular motors agrees with that these genes and their products are larger in size than
their microbial orthologous, indicating that they have evolved to convey additional features. 相似文献
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