Gastrulation in the sea urchin is accompanied by the accumulation of an endoderm-specific mRNA.

Gastrulation in the sea urchin is accompanied by the accumulation of an endoderm-specific mRNA.
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海胆的原肠胚形成伴随着内胚层特异性 mRNA 的积累。

DOI:
10.1016/0012-1606(89)90278-9
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发表时间:
1989
影响因子:
2.7
通讯作者:
Klein,WH
Klein,WH
中科院分区:
生物学3区
文献类型:
--
作者:
Wessel,GM;Goldberg,L;Lennarz,WJ;Klein,WH

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用内胚层特异性 cDNA 克隆检查了海胆 Lytechinus variegatus 内胚层在原肠胚形成过程中的空间多样性。该 cDNA 克隆 ​​LvN1.2 通过棱柱期胚胎的外胚层和内胚层/中胚层部分之间的差异 cDNA 筛选来鉴定。 LvN 1.2-kb mRNA 首先在原肠胚形成之前的间充质囊胚阶段通过 Northern 印迹检测到,然后从原肠胚形成到黄体阶段积累了约 15 倍。原位杂交分析表明,该 mRNA 在内胚层中特异性积累,并且仅限于后肠-中肠区域。这种受限的定位在原肠胚形成期间很明显,并预测了最终在棱柱和臀肌阶段看到的前肠和中肠之间的形态差异。序列分析表明,189 个氨基酸的开放阅读框代表了一种新蛋白质。合成产生的 LvN1.2 mRNA 的体外翻译和使用蛋白质序列抗体进行的蛋白质印迹分析在 SDS-PAGE 上产生了相同的 25-kDa 多肽。 LvN1.2 蛋白存在于后肠和中肠细胞的离散颗粒内。这些颗粒集中在细胞的管腔部分,表明 LvN1.2 蛋白参与肠道该区域的消化功能。
Spatial diversification of the endoderm during gastrulation in the sea urchinLytechinus variegatuswas examined with an endoderm-specific cDNA clone. This cDNA clone, LvN1.2, was identified by a differential cDNA screen between the ectoderm and endoderm/mesoderm fractions from prism stage embryos. The LvN 1.2-kb mRNA was first detectable by Northern blots at the mesenchyme blastula stage just prior to gastrulation and then accumulated approximately 15-fold from gastrulation to the pluteus stage.In situhybridization analysis demonstrated that the mRNA accumulated specifically in endoderm and was restricted to the hindgut-midgut regions. This restricted localization was apparent during gastrulation and predicted the morphological distinction between foregut and midgut eventually seen at prism and pluteus stages. Sequence analysis showed that the 189-amino acid open reading frame represented a novel protein.In vitrotranslation of synthetically produced LvN1.2 mRNA and Western blot analysis with antibodies to the protein sequence yielded the same 25-kDa polypeptide on SDS-PAGE. The LvN1.2 protein resided within discrete granules of the hindgut and midgut cells. These particles were concentrated to the luminal aspect of the cells, suggesting the LvN1.2 protein participates in the digestive function of this region of the gut.
DOI: 10.1073/pnas.84.14.4767
发表时间: 1987-07-01
影响因子: 11.1
作者:
TABOR, S;RICHARDSON, CC
通讯作者: RICHARDSON, CC
海胆胚胎发生过程中可翻译信使RNA种类的细胞质分布和蛋白质合成模式的调控
DOI: --
发表时间: 1986
期刊:
影响因子: --
作者:
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通讯作者: B. Brandhorst
海胆胚胎中线粒体起源的普遍 RNA 序列。
DOI: 10.1016/0012-1606(82)90202-0
发表时间: 1982
影响因子: 2.7
作者:
Wells,DE;Bruskin,AM;O'Brochta,DA;Raff,RA
通讯作者: Raff,RA
通过原位杂交展示组织特异性基因表达。
DOI: 10.1016/0076-6879(87)52071-7
发表时间: 1987
影响因子: --
作者:
Angerer,LM;Cox,KH;Angerer,RC
通讯作者: Angerer,RC
在海胆胚胎内胚层中表达的基因。
DOI: 10.1089/dna.1988.7.637
发表时间: 1988
期刊: DNA (Mary Ann Liebert, Inc.)
影响因子: --
作者:
Dolecki,GJ;Lum,R;Humphreys,T
通讯作者: Humphreys,T