期刊
MECHANISMS OF DEVELOPMENT
卷 117, 期 1-2, 页码 243-248出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0925-4773(02)00187-9
关键词
Tlx-1; Tlx-3a; Tlx-3b; Tlx-a; Pax2.1; Krox20; narrowminded; zebrafish; cranial sensory ganglia; dorsal root ganglia; Rohon-Beard neurons; spleen
资金
- NCI NIH HHS [CA68484] Funding Source: Medline
Tlx (Hox11) genes are orphan homeobox genes that play critical roles in the regulation of early developmental processes in vertebrates. Here, we report the identification and expression patterns of three members of the zebrafish Tlx family. These genes share similar, but not identical, expression patterns with other vertebrate Tlx-1 and Tlx-3 genes. Tlx-1 is expressed early in the developing hindbrain and pharyngeal arches, and later in the putative splenic primordium. However, unlike its orthologues, zebrafish Tlx-1 is not expressed in the cranial sensory ganglia or spinal cord. Two homologues of Tlx-3 were identified: Tlx-3a and Tlx-3b, which are both expressed in discrete regions of the developing nervous system, including the cranial sensory ganglia and Rohon-Beard neurons. However, only Tlx-3a is expressed in the statoacoustic cranial ganglia, enteric neurons and non-neural tissues such as the fin bud and pharyngeal arches and Tlx-3b is only expressed in the dorsal root ganglia. (C) 2002 Elsevier Science Ireland Ltd. All rights reserved.
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