Special features of dermal melanocytes in white silky chicken embryos
- PMID: 18085614
- DOI: 10.1002/ar.20623
Special features of dermal melanocytes in white silky chicken embryos
Abstract
In the hyperpigmented Silky (SK) chicken, melanoblasts are neural crest cells that emigrate from the neural tube, migrate dorsolaterally, close to the ectoderm and medioventrally, reaching visceral regions of the embryo, as well as populating the dermis. In this work, we analyzed the morphology and distribution of melanocytic lineage cells in white SK embryos at later stages of development (6 to 19 days of incubation) focusing in the dermis of dorsal skin to characterize this ectopically located population. Melanoblasts and immature melanocytes are seen at all analyzed stages, some of them clearly proliferative, suggesting a possibility of continued renewal of the population. Mature, fully differentiated melanocytes are elongated cells with many long cytoplasmic processes, forming a meshwork in superficial dermis, below a layer of collagen and elastic fibers that seems to prevent melanocytic lineage cells from reaching the epidermis at these later stages. SK chicken is the only Gallus gallus breed to display this arrangement of dermal melanocytes. The distribution of melanocytes below the collagen layer, observed in regions covered by feathers, is clearly not related with structural coloration as in areas of bare skin. Other functions for this conserved trait in SK must be investigated.
Similar articles
-
[Migration of melanocytic lineage-derived cells].Med Sci (Paris). 2013 Mar;29(3):287-92. doi: 10.1051/medsci/2013293015. Epub 2013 Mar 27. Med Sci (Paris). 2013. PMID: 23544383 Review. French.
-
The making of a melanocyte: the specification of melanoblasts from the neural crest.Pigment Cell Melanoma Res. 2008 Dec;21(6):598-610. doi: 10.1111/j.1755-148X.2008.00506.x. Pigment Cell Melanoma Res. 2008. PMID: 19067969 Review.
-
PNA-positive glycoconjugates are negatively correlated with the access of neural crest cells to the gut in chicken embryos.Anat Rec A Discov Mol Cell Evol Biol. 2003 Aug;273(2):705-13. doi: 10.1002/ar.a.10078. Anat Rec A Discov Mol Cell Evol Biol. 2003. PMID: 12845707
-
Hyperpigmentation in the Silkie fowl correlates with abnormal migration of fate-restricted melanoblasts and loss of environmental barrier molecules.Dev Dyn. 2001 Mar;220(3):212-25. doi: 10.1002/1097-0177(20010301)220:3<212::AID-DVDY1105>3.0.CO;2-9. Dev Dyn. 2001. PMID: 11241830
-
Steel and c-kit in the development of avian melanocytes: a study of normally pigmented birds and of the hyperpigmented mutant silky fowl.Dev Dyn. 1995 May;203(1):106-18. doi: 10.1002/aja.1002030111. Dev Dyn. 1995. PMID: 7544170
Cited by
-
Tyrosine Hydroxylase-Immunopositive Cells and Melanin in the Mesencephalon of Yugan Black-Bone Fowl.J Microsc Ultrastruct. 2021 Feb 9;10(1):20-22. doi: 10.4103/JMAU.JMAU_50_20. eCollection 2022 Jan-Mar. J Microsc Ultrastruct. 2021. PMID: 35433261 Free PMC article.
-
3D skin models in domestic animals.Vet Res. 2021 Feb 15;52(1):21. doi: 10.1186/s13567-020-00888-5. Vet Res. 2021. PMID: 33588939 Free PMC article. Review.
-
Consistency of dark skeletal muscles in Thai native black-bone chickens (Gallus gallus domesticus).PeerJ. 2021 Jan 13;9:e10728. doi: 10.7717/peerj.10728. eCollection 2021. PeerJ. 2021. PMID: 33520473 Free PMC article.
-
Transcriptome analyses of differential gene expression in the bursa of Fabricius between Silky Fowl and White Leghorn.Sci Rep. 2017 Apr 13;7:45959. doi: 10.1038/srep45959. Sci Rep. 2017. PMID: 28406147 Free PMC article.
-
Hyperpigmentation Results in Aberrant Immune Development in Silky Fowl (Gallus gallus domesticus Brisson).PLoS One. 2015 Jun 5;10(6):e0125686. doi: 10.1371/journal.pone.0125686. eCollection 2015. PLoS One. 2015. PMID: 26047316 Free PMC article.
MeSH terms
LinkOut - more resources
Full Text Sources