Abstract:
:Gustatory papillae and associated taste buds receive and process chemical information from the environment. In mammals, their development takes place during the late phase of embryogenesis. However, the cellular factors that regulate the differentiation of taste papillae remain largely unknown. Here, we show by quantitative real time RT-PCR that both isoforms of tryptophan hydroxylase (TPH1 and TPH2), the first and rate limiting enzyme of serotonin (5-HT) synthesis, are expressed in developing circumvallate papillae. Immuno-staining experiments further indicated that TPH is localized both in gustatory fibers and in differentiated taste receptor cells. These results point to the synthesis of 5-HT in gustatory papillae, and allow one to hypothesize that the development of taste buds might be modulated by serotonin.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Ortíz-Alvarado R,Guzmán-Quevedo O,Mercado-Camargo R,Haertle T,Vignes C,Bolaños-Jiménez Fdoi
10.1016/j.febslet.2006.08.078subject
Has Abstractpub_date
2006-10-02 00:00:00pages
5371-6issue
22eissn
0014-5793issn
1873-3468pii
S0014-5793(06)01069-6journal_volume
580pub_type
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