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    • 10. 发明授权
    • Remedy for CAG repeat expansion diseases
    • 补救CAG重复扩张疾病
    • US06355690B1
    • 2002-03-12
    • US09236002
    • 1999-01-22
    • Shoji Tsuji
    • Shoji Tsuji
    • A61K31095
    • A61K31/145
    • To elucidate the molecular mechanisms of “gain of toxic function” of expanded polyglutamine stretches in CAG repeat expansion diseases, the inventors established an expression system of full-length and truncated cDNAs for dentatorubral-pallidoluysian atrophy (DRPLA) and found that truncated DRPLA proteins containing the expanded polyglutamine stretch, but not the full-length protein, form peri- and intra-nuclear aggregates consisting of filaments and concomitant apoptosis. The apoptotic cell death was partially suppressed by transglutaminase inhibitors, cystamine and monodansyl cadaverine, raising the possibility of involvement of transglutaminase reaction. The results may provide a potential basis for the development of therapeutic measures for CAG repeat expansion diseases.
    • 为了阐明CAG重复扩张疾病中扩展的聚谷氨酰胺延伸的“获得有毒功能”的分子机制,本发明人建立了用于牙髓 - 苍白球囊肿萎缩(DRPLA)的全长和截短的cDNA的表达系统,并发现含有截短的DRPLA蛋白 扩展的多聚谷氨酰胺拉伸,但不是全长蛋白,形成由细丝组成的周围和核内聚集体和伴随的凋亡。 转谷氨酰胺酶抑制剂,胱氨酸和单睾酮尸胺部分抑制凋亡细胞死亡,提高转谷氨酰胺酶反应的可能性。 结果可能为开发CAG重复扩张疾病的治疗措施提供潜在的依据。