Taste buds are not derived from neural crest in mouse, chicken, and zebrafish.

In this study, we mapped NC cell lineages in three different models, Sox10-iCreERT2/tdT mouse, GFP+ neural fold transplantation to GFP- chickens, and Sox10-Cre/GFP-RFP zebrafish model. We found that in mice, Sox10-iCreERT2 specifically labels NC cell lineages with a single dose of tamoxifen at E7.5 and that the labeled cells were widely distributed in the connective tissue of the tongue. No labeled cells were found in taste buds or the surrounding epithelium in the postnatal mice. In the GFP+/GFP- chicken chimera model, GFP+ cells migrated extensively to the cranial region of chicken embryos ipsilateral to the surgery side but were absent in taste buds in the base of oral cavity and palate. In zebrafish, Sox10-Cre/GFP-RFP faithfully labeled known NC-derived tissues but did not label taste buds in lower jaw or the barbel. Our data, together with previous findings in axolotl, indicate that taste buds are not derived from NC cells in rodents, birds, amphibians or teleost fish.
PMID: 33326797 [PubMed - as supplied by publisher]

Source: Developmental Biology - December 13, 2020 Category: Biology Authors: Yu W, Wang Z, Marshall B, Yoshida Y, Patel R, Cui X, Ball R, Yin L, Kawabata F, Tabata S, Chen W, Kelsh RN, Lauderdale JD, Liu HX Tags: Dev Biol Source Type: research