文昌鱼一个GATA基因在胚胎发育中的表达图式(英文）

ZHANG Yu-jun; MAO Bing-yu

doi:10.3724/SP.J.1141.2009.02137

文昌鱼一个GATA基因在胚胎发育中的表达图式(英文）

doi: 10.3724/SP.J.1141.2009.02137

1.
中国科学院昆明动物研究所遗传资源与进化国家重点实验室，云南昆明 650223；2. 中国科学院研究生院，北京 100049

详细信息

通讯作者:
毛炳宇

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出版历程
- 收稿日期: 2008-12-15
- 修回日期: 1900-01-01
- 刊出日期: 2009-04-22

Developmental Expression of an Amphioxus (Branchiostoma belcheri) Gene Encoding a GATA Transcription Factor

1.
CASMax Planck Junior Scientist Group on Neural Patterning, State Key Laboratory of Genetic Resources and Evolution, Kunming，Institute of Zoology, the Chinese Academy of Sciences, Kunming 650223, China; 2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

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Corresponding author: MAO Bing-yu

摘要

摘要: GATA基因在脊椎动物和非脊椎动物的发育中行使重要的功能，该家族的成员在进化上也是非常保守的。脊椎动物的GATA基因分为两个亚群：GATA1/2/3和GATA4/5/6。通过生物信息分析，在文昌鱼的基因组中找到了3个GATA基因：一个GATA1/2/3亚家族基因，两个GATA4/5/6亚家族基因；还找到一个类GATA基因。还克隆了白氏文昌鱼(Branchiostoma belcheri)GATA123的一段序列，并研究了它在早期胚胎发育中的表达图式。结果表明GATA123在原肠胚的中内胚层表达，而在神经胚晚期和幼体早期，GATA123在脑泡和消化道中部区域表达。这种表达模式与头部发育的重要基因Otx相类似。结果提示在文昌鱼脑泡的发育过程中GATA123和Otx很可能共同发挥着重要的作用。
- GATA因子 /
- 表达图式 /
- 文昌鱼 /
- 白氏文昌鱼
Abstract: GATA factors are evolutionarily conserved and play crucial roles during embryonic development in both vertebrates and invertebrates. Vertebrate GATAs can be divided into two subgroups, the GATA1/2/3 and the GATA4/5/6 classes. Through genomic analysis, we have identified three GATA factors, representing the GATA1/2/3 and GATA4/5/6 subfamilies respectively, and one GATA like protein in the genome of the basal chordate amphioxus (Branchiostoma floridae, cephalochordata). Partial sequence of GATA123 in the amphioxus Branchiostoma belcheri (BbGATA123) was cloned and its expression pattern during early embryonic development was studied. Expression of BbGATA123 is first detected in the mesendoderm during gastrulation. Interestingly, in the late neurula and early larva stages, it is expressed strongly in the cerebral vesicle and the mid gut region. Its expression is compared to Otx, a gene known crucial for the development of anterior structures. Our observations suggest that GATA123, together with Otx, might play an important role in the development of amphioxus cerebral vesicle, the counterpart of the vertebrate brain.
- GATA factors /
- Expression pattern /
- Amphioxus /
- Branchiostoma belcheri

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