XB-IMG-130097
Xenbase Image ID: 130097
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Fig. 1. Smad6 does not induce neural markers in the chick. (A-G) Experiments to test the activity of Smad6. Smad6-IRES-GFP was electroporated into one half of the chick neural tube (A,B). Staining against phospho-Smad1 (A) reveals that activation of Smad1 has been inhibited in the electroporated cells (green in B), while in control GFP electroporated embryos (C,D) phospho-Smad1 is not altered (C). cSmad6 injection into the marginal zone in Xenopus (E) induces a secondary axis (F), while GFP-injected controls appear normal (G). (H-N) Smad6 does not induce neural markers. Electroporation of Smad6 into competent area opaca epiblast at stage 3+ (H) does not induce Brachyury (I,L; light blue), Sox2 (J) or Sox3 (M) (purple). In this and subsequent figures, electroporated cells were visualized by staining with anti-GFP antibody (K, N; brown). (O-Q) Positive controls. cSmad6 or GFP was injected at the two-cell stage and animal caps isolated at early gastrula (O). Smad6 (P) can neuralize animal caps, while GFP cannot (Q), as assessed by Sox3 expression. Image published in: Linker C and Stern CD (2004) Copyright © 2004. Image reproduced with permission of the publisher and the copyright holder. This is an Open Access article distributed under the terms of the Creative Commons Attribution License. Larger Image Printer Friendly View |