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During investigations on the regulation of the Pax-6 gene, we characterized a cDNA from quail neuroretina showing a 5' untranslated region distinct from that previously described and initiated from an internal promoter. Using RNase protection and primer extension mapping, we localized this second quail Pax-6 promoter, termed P1. As reported for the already(More)
The Drosophila (fruit fly) model system has been instrumental in our current understanding of human biology, development, and diseases. Here, we used a high-throughput yeast two-hybrid (Y2H)-based technology to screen 102 bait proteins from Drosophila melanogaster, most of them orthologous to human cancer-related and/or signaling proteins, against(More)
The Pax-6 gene encodes a transcriptional master regulator involved in the development of the eye. The quail Pax-6 gene is expressed in the neuroretina from two promoters, P0 and P1, P0 being activated at the onset of neuronal differentiation. In this paper we have identified two regions in the quail Pax-6 gene 5' flanking sequences, located 6 and 2.5 kbp(More)
Proper growth and development of multicellular organisms requires precise regulation of developmental genes. One aspect of this regulation is at the level of transcription from the gene promoters. As an initial approach to understanding the regulation of the Pax-6 gene, which plays an important role in eye development and perhaps in other developmental(More)
Retinal progenitor proliferation and differentiation are tightly controlled by extrinsic cues and distinctive combinations of transcription factors leading to the generation of retinal cell type diversity. In this context, we have characterized Bcl-2-associated transcription factor (Bclaf1) during rodent retinogenesis. Bclaf1 expression is restricted to(More)
In this study we extend the mouse Pax6 mutant allelic series to include a homozygous and hemizygous viable hypomorph allele. The Pax6(132-14Neu) allele is a Phe272Ile missense mutation within the third helix of the homeodomain. The mutant Pax6 homeodomain shows greatly reduced binding activity to the P3 DNA binding target. Glucagon-promoter activation by(More)
The Pax-6 gene encodes a transcriptional master regulator involved in the development of the eye. The quail Pax-6 gene is expressed in the neuroretina from two promoters, P0 and P1, and is regulated by an intragenic neuroretina-specific enhancer (EP enhancer). The activity of this enhancer is restricted to the P0 promoter, which is activated at the onset of(More)
So far, no common environmental and/or phenotypic factor has been associated with melanoma and renal cell carcinoma (RCC). The known risk factors for melanoma include sun exposure, pigmentation and nevus phenotypes; risk factors associated with RCC include smoking, obesity and hypertension. A recent study of coexisting melanoma and RCC in the same patients(More)
PURPOSE Incurable metastases develop in approximately 50% of patients with uveal melanoma (UM). The purpose of this study was to analyze genomic profiles in a large series of ocular tumors and liver metastases and design a genome-based classifier for metastatic risk assessment. METHODS A series of 86 UM tumors and 66 liver metastases were analyzed by(More)
By in situ hybridization of quail neuroretinas, we observed that Engrailed (En-1) is expressed both in the ganglionic and the amacrine cell layers, similarly to Pax-6. Because we observed a decrease of Pax-6 expression in the neuroretina of hatched animals, we studied the effect of the chicken En-1 and En-2 proteins on Pax-6 expression. En-1 and to some(More)