Embryonal rhabdomyosarcoma (ERMS) is an aggressive pediatric sarcoma of muscle. Here, we show that ERMS-propagating potential is confined to myf5+ cells and can be visualized in live, fluorescent transgenic zebrafish. During early tumor growth, myf5+ ERMS cells reside adjacent normal muscle fibers. By late-stage ERMS, myf5+ cells are reorganized into distinct regions separated from differentiated tumor cells. Time-lapse imaging of late-stage ERMS revealed that myf5+ cells populate newly formed tumor only after seeding by highly migratory myogenin+ ERMS cells. Moreover, myogenin+ ERMS cells can enter the vasculature, whereas myf5+ ERMS-propagating cells do not. Our data suggest that non-tumor-propagating cells likely have important supportive roles in cancer progression and facilitate metastasis.
|Number of pages||14|
|State||Published - May 25 2012|
Bibliographical noteFunding Information:
E.C. and J.S.B. are supported by the National Institutes of Health (NIH) Training Grants T32 HL007627 and 5T32CA09216-26, respectively. C.M.L. is supported by R01 CA122706 and K12 HD043494. D.M.L. is supported by NIH Grants K01 AR055619, 1RO1CA154923, and 1R21CA156056; the Alex's Lemonade Stand Foundation; the Sarcoma Foundation of America; the American Cancer Society; and the Harvard Stem Cell Institute. I.M.T. is supported by Fundação para a Ciência e Tecnologia (the Portuguese Foundation for Science and Technology) through Fellowship SFRH/BD/51288/2010. We thank Huai-Jen Tsai for myf5-GFP transgenic animals and Clarrisa Henry for critical review of our manuscript.
ASJC Scopus subject areas
- Cell Biology
- Cancer Research