TY - JOUR TI - Overexpression of the Xenopus Xl-fli gene during early embryogenesis leads to anomalies in head and heart development and erythroid differentiation. AU - Remy, P AU - Senan, F AU - Meyer, D AU - Mager, A M AU - Hindelang, C T2 - The International Journal of Developmental Biology AB - The product of the Xl-fli gene, a Xenopus laevis transcription factor of the ets family, specifically expressed in several lineage of migratory cells during Xenopus development (Meyer et al., Int. J. Dev. Biol. 39: 909-919, 1995) was overproduced during Xenopus embryogenesis, upon microinjection of a synthetic transcript in the fertilized egg or in the early embryo. This results in anomalies of the antero-posterior and dorso-ventral polarities, and in tissue differentiation, particularly in the eye- and head cartilage development, as well as erythroid differentiation (absence of erythrocyte differentiation in the circulating blood, often accompanied by ectopic localization of mature erythrocytes, leading to important hemangiomas). Cytological examination reveals at gastrulation the existence of abnormal cells separating the different embryonic layers, suggesting modifications of the cellular adhesion properties. The possible involvement of the fli gene in controlling the dissemination of migratory cells is discussed. PY - 1996 VL - 40 IS - 3 SP - 577 EP - 589 J2 - Int. J. Dev. Biol. LA - en SN - 0214-6282 SN - 1696-3547 UR - https://ijdb.ehu.eus/article/8840190 Y2 - 2024/12/04/09:53:53 ER -