.... Here, we show that the zinc-finger transcription factor Blimp-1 acts in secondary and tertiary pigment cells in the Drosophila retina to promote the formation of a bi-convex corneal lens with normal refractive power, and in cone cells to enable complete extension of the photoreceptor rhabdomeres. Blimp...

... melanocyte differentiation . Pigment Cell Res. 18 , 181 - 187 . Planque N. , Raposo G. , Leconte L. , Anezo O. , Martin P. , Saule S. ( 2004 ). Microphthalmia transcription factor induces both retinal pigmented epithelium and neural crest melanocytes from neuroretina...

... are involved in pigment cell development, but the possible interplay between FGF and Wnt remains to be elucidated. In this study, we have investigated the role of FGF and Wnt signaling in development of the pigment cells in the sensory organs of C. intestinalis . This species possesses the basic features...

... it activates signalling in the dorsal primary mesenchyme cells, the dorsal endoderm and in pigment cell precursors. Therefore, correct patterning of the endomesoderm depends on a balance between ventralising Nodal signals and dorsalising BMP2/4 signals. These experiments confirm that Nodal is a key regulator...

...Raghavendra Nagaraj; Utpal Banerjee In the developing eye of Drosophila , the EGFR and Notch pathways integrate in a sequential, followed by a combinatorial, manner in the specification of cone-cell fate. Here, we demonstrate that the specification of primary pigment cells requires the reiterative...

...Cristina Calestani; Jonathan P. Rast; Eric H. Davidson New secondary mesenchyme specific genes, expressed exclusively in pigment cells, were isolated from sea urchin embryos using a differential screening of a macroarray cDNA library. The comparison was performed between mRNA populations of embryos...

...Kirsten A. Dutton; Angela Pauliny; Susana S. Lopes; Stone Elworthy; Tom J. Carney; Jörg Rauch; Robert Geisler; Pascal Haffter; Robert N. Kelsh Waardenburg-Shah syndrome combines the reduced enteric nervous system characteristic of Hirschsprung’s disease with reduced pigment cell number, although...

... ABSTRACT In a large-scale screen for mutants with defects in embryonic development we identified 17 genes (65 mutants) specifically required for the development of xan-thophores. We provide evidence that these genes are required for three different aspects of xanthophore development. (1) Pigment cell...

..., including subepidermal presumptive pigment cells, dorsal root ganglia, and sympathetic ganglia. By varying the stage at which the injection was performed, neural crest cell emigration at the level of the wing bud was shown to occur from stage 13 through stage 22. In addition, neural crest cells were found...

... antibody, were present on the surface of the somites at the time of explantation. After several days in culture, the explanted somites were screened to identify pigment cells. Because neural crest cells give rise to all of the melanocytes in the trunk, the presence of pigment cells indicated that neural...

...R. P. Tucker; C. A. Erickson ABSTRACT Neural crest-derived pigment cells form species-specific patterns of pigmentation in amphibian embryos. We have characterized the appearance and changes in pigment cell distribution in the embryos of the California newt, Taricha torosa . Black melanophores...

...R. P. Tucker ABSTRACT The migratory pathways of neural crest-derived pigment cells were examined in two anurans, Xenopus laevis and Discoglossus pictus , and correlated with the distribution of glycosaminoglycans (GAG) in the extracellular matrix (ECM) of these pathways. In Xenopus , melanophores...