Abstract
Recently, much attention has been focused on triplet-repeat expansions on the human genome, because they are reported to cause a number of neurodegenerative diseases such as the familial mental retardation, myotonic dystrophy, autosomal dominant diseases, or Huntington disease, which are so called triplet-repeat diseases (1,2). A hallmark of most of these diseases is the phenomenon of “anticipation,” which are not easily explained by Mendel’s Laws of genetic inheritance. This phenomenon includes a parental sex bias and a “decrease in the age at onset of the disease” or severity of the disease in consecutive generations due to the tendency of the unstable triplet repeat to lengthen when passed from one generation to the next. The expansion of the triplet-repeat element is associated with the defect, in which the extent of the expansion roughly correlates with the severity of the disease symptoms. The tripletrepeat element expansions are not stable, and it is unclear precisely how the expansions are directly associated with triplet-repeat diseases. Although several expansions encode enlarged polyglutamine tracts within their encoded protein, which might be expected to alter either the charge density and pI, or the folded structure of the protein, the mechanism for the etiology and progression of most of these diseases is not yet understood.
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References
Baba, Y. (1996) Analysis of disease-causing genes and DNA-based drugs by capillary electrophoresis. J. Chromatogr. B 687, 271–302.
Paulson, H. L. and Fischbeck, K. H. (1996) Triplet repeat diseases. Ann. Rev. Neurosci. 19, 79–107.
Kiba, Y. and Baba, Y. (1999) Capillary electrophoretic behavior and conformational analysis of triplet-repeat DNA. Bunseki Kagaku 48, 193–203.
Kiba, Y. and Baba, Y. (1999) Unusual capillary electrophoretic behavior of triplet repeat DNA. J. Biochem. Biophys. Methods 41, 143–151.
Kiba, Y. and Baba, Y. (submitted) A large DNA fragment migrates much faster than a small DNA fragment in polymer solution: Capillary electrophoresis as a new tool to elucidate the higher-order structure of human genes.
Kiba, Y., Ninomiya, M., and Baba, Y. (1999) DNA separation by capillary electrophoresis. Chromatography 20, 27–35.
Viovy, J.-L. and Heller, C. (1996) Principles of size-based separations in polymer solutions, in Capillary Electrophoresis in Analytical Biotechnology (Righetti, P. G., ed.), CRC press, Boca Raton, Chap. 11., pp. 477–508.
Kasuga, T., Cheng, J., and Mitchelson, K. R. (2001) Magnetic bead-isolated single-strand DNA for SSCP analysis, in Capillary Electrophoresis of Nucleic Acids, Vol. 2 (Mitchelson, K. R. and Cheng, J., eds.), Humana Press, Totowa, NJ, pp. 135–147.
Marzilli, L. A., Koertje, C., and Vouros, P. (2001) Capillary electrophoresis — mass spectrometric analysis of DNA adducts, in Capillary Electrophoresis of Nucleic Acids, Vol. 1 (Mitchelson, K. R., and Cheng, J., eds.), Humana Press, Totowa, NJ, pp. 395–406.
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Kiba, Y., Baba, Y. (2001). Analysis of Triplet-Repeat DNA by Capillary Electrophoresis. In: Mitchelson, K.R., Cheng, J. (eds) Capillary Electrophoresis of Nucleic Acids. Methods in Molecular Biology™, vol 163. Humana Press. https://doi.org/10.1385/1-59259-116-7:221
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DOI: https://doi.org/10.1385/1-59259-116-7:221
Publisher Name: Humana Press
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