کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2179171 1549773 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Expression of HMGA2 variants during oogenesis and early embryogenesis of Xenopus laevis
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
Expression of HMGA2 variants during oogenesis and early embryogenesis of Xenopus laevis
چکیده انگلیسی

The high mobility group proteins A2 (HMGA2) have been implicated in the control of cell proliferation and differentiation, in particular during embryogenesis. Here, we used Xenopus laevis to analyze HMGA2 gene expression patterns during oogenesis and early embryogenesis. We found two functional XlHMGA2 isoforms, which we named XlHMGA2α and XlHMGA2β. As revealed by RT-PCR, real-time PCR and whole-mount in situ hybridization both mRNAs are maternally produced and stored in eggs. Whole-mount in situ hybridizations revealed a conspicuous redistribution of the XlHMGA2 transcripts during early embryogenesis. Initially, during oogenesis and in eggs, the transcripts are uniformly distributed in the cytoplasm. With activation of the eggs the transcripts accumulate near the animal pole and remain in the juxtanuclear regions of animal pole blastomeres until midblastula transition. According to real-time PCR data, XlHMGA2α appears to be preferentially expressed during oogenesis and after midblastula transition, whereas XlHMGA2β expression predominates after neurulation, suggesting an individual transcriptional regulation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Cell Biology - Volume 85, Issue 6, 14 June 2006, Pages 519–528
نویسندگان
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