Volume 131(1), pp. 57-62
David Bueno (1) (email for reprint), Helen Abud, Judith Skinner and John K. Heath (2)
Department of Biochemistry, University of Oxford, South Parks Road, OX1 3QU Oxford, UK
(1) Current address: Departament de Genètica, Facultat de Biologia, Universitat de Barcelona, Av. Diagonal 645, 08028 Barcelona, Catalonia, Spain
(2) Current address: School of Biochemistry, The University of Birmingham, Edgbaston, B15 2TT Birmingham, UK
Constitutive expression of FGF4 disrupts the development of the eye and the anterior CNS during mouse embryogenesis, but does not influence the expression of shh in these areas
Abstract:
The biological consequences of constitutive fibroblast growth factor-4 (fgf4) expression have been analysed during anterior CNS development of mouse chimeric embryos. Severe mutant embryos exhibit exencephaly, absence of eye development and anomalous differentiation of the neuroepithelium. These embryos also show ectopic limb buds resembling the early phases of limb development. Because our results show that anterior CNS in those chimeric embryos does not express shh ectopically, we suggest that malformations may be due to interference between the ectopic expression of fgf4 in the cephalic area and the receptors for the members of the FGF family that regulate brain and eye development, namely fgf8. If this is correct, the results indirectly support the crucial role of fgf8 in patterning the anterior CNS.
Key words:Fibroblast Growth Factors, CNS development, eye development, mouse chimeric embryos, FGF4 gain of function.
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