Publication date: June 2018
Source: Gene Expression Patterns, Volume 28
Author(s): Chang Xue, Hai Hong Wang, Jun Zhu, Jun Zhou
Abstract
Transcriptional cofactor Vestigial-like 4 (VGLL4) was considered to take part in the early stage of development. Different from human, three paralogs of vgll4 were found in zebrafish, which were vgll4a, vgll4b and vgll4l. However, the expression patterns of the three paralogs during zebrafish development remains unknown. In this study, we used in situ hybridization to elucidate the temporal and spatial expression of zebrafish vgll4 paralogs during normal embryonic and larval development. Similar expression was shown in certain areas at similar stages for the three paralogs. Expression of vgll4a, vgll4b and vgll4l were all found in pectoral fins and otic vesicles during the early developmental stages. On the other hand, a few differences of the three paralogs expression were found in eyes, pharynx, pharyngeal arches and brain tissues. The expression of vgll4a was weak and ubiquitous, while vgll4b was obviously expressed in brain tissues and vgll4l was clearly restricted to each pair of pharyngeal pouches. What's more, vgll4b and vgll4l had unique expression at mature lateral line neuromasts and forerunner cells respectively. Despite the conservativeness of functional domains, the three paralogs of zebrafish vgll4 shared several similarities and displayed some distinctions in the expression patterns, indicating that they may still have different and exclusive functions, which need to be further explored.
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