FIGURE SUMMARY
Title

A New Class of Small Molecule Inhibitor of BMP Signaling

Authors
Sanvitale, C.E., Kerr, G., Chaikuad, A., Ramel, M.C., Mohedas, A.H., Reichert, S., Wang, Y., Triffitt, J.T., Cuny, G.D., Yu, P.B., Hill, C.S., and Bullock, A.N.
Source
Full text @ PLoS One

K02288 induces dorsalization of zebrafish embryos.

(A) Brightfield photographs of 26 hours old Tg(BRE:mRFP) transgenic embryos treated with DMSO or varying doses of K02288 from the 8- to 16-cell stage. Severity of the dorsalization correlated with the dose of K02288. Very strong dorsalized phenotypes were observed with 8–10 μM K02288. (B) The phenotypes of the embryos shown in A were classified according to Kishimoto et al. [49]. (C) Western blot for mRFP in extracts prepared from Tg(BRE:mRFP) embryos treated in a parallel experiment. Loss of mRFP protein was evident at 8–10 μM K02288. As a control, the effects of dorsomorphin (DM) and LDN-193189 (LDN) on mRFP expression are also shown. Protein loading control is shown with the MCM6 blot.

K02288 does not inhibit vasculature development.

(Top panels) Brightfield photographs of 48 hours old Tg(fli1a:eGFP) embryos treated with DMSO or chemical inhibitors from 12 hours post fertilization. Embryos were manually dechorionated after bud stage before treatment. (Center panels) Same view under UV light for visualization of eGFP expression in the vasculature. Dorsomorphin and LDN-193189 treatment resulted in intersomitic vessel (ISV) formation defects, consistent with their known inhibition of VEGF signaling. (Lower panels) Higher magnification views of representative embryos and phenotype summary. The most severe phenotypes were observed with dorsomorphin. No effects on ISV formation were observed with K02288 treatment.

Acknowledgments
This image is the copyrighted work of the attributed author or publisher, and ZFIN has permission only to display this image to its users. Additional permissions should be obtained from the applicable author or publisher of the image. Full text @ PLoS One