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Träfflista för sökning "WFRF:(Dralle H) srt2:(2010-2014)"

Sökning: WFRF:(Dralle H) > (2010-2014)

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  • Weidinger, C, et al. (författare)
  • Distinct Regulation of Intrinsic Apoptosis in Benignand Malignant Thyroid Tumours
  • 2010
  • Ingår i: Hormone and Metabolic Research. - : Georg Thieme Verlag KG. - 0018-5043 .- 1439-4286. ; 42:8, s. 553-556
  • Tidskriftsartikel (refereegranskat)abstract
    • Aberrations in the control of apoptosis represent a central feature of thyroid carcinogenesis. However, little is known about the regulation of components of the intrinsic apoptosis pathway in the thyroid. Using a real-time PCR approach we investigated the mRNA expression levels of Caspase3, Caspase3 s, xIAP, Bad, and β-actin in a panel of 79 thyroid tumours. Additionally, we assessed the activation status of Caspase3 by immunohistochemistry. In the present study, we provide first evidence for a deregulation of the intrinsic apoptosis pathway on the transcriptional and post-transcriptional level. Thus, malignant thyroid tumours revealed a significant downregulation of the proapoptotic Bad. In contrast Caspase3 s, an alternative splice variant of Caspase3 with anti-apoptotic characteristics, was upregulated in follicular and anaplastic cancers. Moreover, papillary thyroid tumours revealed a significant upregulation of Caspase3 mRNA. On the post-translational level, thyroid malignancies featured an impairment in the activation of Caspase3, since activated Caspase3 accumulated exclusively in the cytoplasm of thyroid cancer cells, whereas follicular adenoma and normal thyroid tissues showed no cytoplasmatic but nuclear Caspase3 distribution. Further knowledge on apoptosis-deregulation during thyroid carcinogenesis might confer diagnostic and therapeutic benefits in the management of thyroid cancer.
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