Patient-derived orthotopic xenograft (PDOX) mouse model of adult rhabdomyosarcoma invades and recurs after resection in contrast to the subcutaneous ectopic model

Kentaro Igarashi, Kei Kawaguchi, Tasuku Kiyuna, Takashi Murakami, Shinji Miwa, Scott D. Nelson, Sarah M. Dry, Yunfeng Li, Arun Singh, Hiroaki Kimura, Katsuhiro Hayashi, Norio Yamamoto, Hiroyuki Tsuchiya, Fritz C. Eilber, Robert M. Hoffman

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34 Citations (Scopus)

Abstract

Rhabdomyosarcoma (RMS) is a rare mesenchymal tumor. The aim of the present study was to develop a patient-derived orthotopic xenograft (PDOX) mouse model of RMS and compare the PDOX model to a subcutaneous (s.c.)-transplant model. A patient RMS from a striated muscle was grown orthotopically in the right biceps femoris muscle and right quadriceps muscle of nude mice to establish a PDOX model, as well as under the skin to establish an s.c. model. PDOX tumors grew at a statistically-significant faster rate compared to the s.c. tumors. Recurrence after surgical resection occurred only in PDOX tumors, not in the s.c. model. Histologically, only the PDOX model was shown to be invasive. In conclusion, these results indicate that the PDOX model of adult RMS is malignant and the subcutaneous model is benign. These results emphasize that a proper tumor microenvironment is necessary for patient-like behavior of a tumor in a mouse model.

Original languageEnglish
Pages (from-to)91-94
Number of pages4
JournalCell Cycle
Volume16
Issue number1
DOIs
Publication statusPublished - 2017 Jan 2
Externally publishedYes

Keywords

  • muscle
  • nude mouse
  • patient-derived orthotopic xenograft
  • PDOX
  • recurrence
  • resection
  • rhabdomyosarcoma
  • subcutaneous
  • tumor growth rate

ASJC Scopus subject areas

  • Molecular Biology
  • Developmental Biology
  • Cell Biology

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  • Cite this

    Igarashi, K., Kawaguchi, K., Kiyuna, T., Murakami, T., Miwa, S., Nelson, S. D., Dry, S. M., Li, Y., Singh, A., Kimura, H., Hayashi, K., Yamamoto, N., Tsuchiya, H., Eilber, F. C., & Hoffman, R. M. (2017). Patient-derived orthotopic xenograft (PDOX) mouse model of adult rhabdomyosarcoma invades and recurs after resection in contrast to the subcutaneous ectopic model. Cell Cycle, 16(1), 91-94. https://doi.org/10.1080/15384101.2016.1252885