Related Experiment Video
Updated: Jul 10, 2026

Placing Growth Factor-Coated Beads on Early Stage Chicken Embryos
Published on: October 1, 2007
Distinct regulators control the expression of the mid-hindbrain organizer signal FGF8
1Department of Molecular Biology, Genentech, 1 DNA Way, South San Francisco, California 94080, USA.
Abstract:
Local expression of FGF8 at the mid/hindbrain boundary (MHB) governs the development of multiple neurons and support cells. Here we show that the paired-domain protein Pax2 is necessary and sufficient for the induction of FGF8 in part by regulating the expression of Pax5&8. A network of transcription and secreted factors, including En1, Otx2, Gbx2, Grg4 and Wnt1&4, that is established independently of Pax2, further refines the expression domain and level of FGF8 at the MHB through opposing effects on Pax2 activity. Our results indicate that the expression of local organizing factors is controlled by combinatorial interaction between inductive and modulatory factors.
Related Concept Videos
Determination
Regulation of Expression Occurs at Multiple Steps
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Master Transcription Regulators
Hedgehog Signaling Pathway
Regulation of Angiogenesis and Blood Supply
Regulation of Expression Occurs at Multiple Steps
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...

