Patient-derived xenografts from colorectal carcinoma: A temporal and hierarchical study of murine stromal cell replacement

Celia Chao, Steven Widen, Thomas Wood, John R. Zatarain, Paul Johnson, Aakash Gajjar, Guillermo Gomez, Suimin Qiu, Jill Thompson, Heidi Spratt, Mark Hellmich

Research output: Contribution to journalArticle

7 Scopus citations


Background/Aim: Patient-derived xenografting (PDX) of human colorectal cancer (CRC) is the preferred experimental model to study tumor response to therapeutic agentS. Gradually, human stromal cells are replaced by mouse stromal cells; however, the exact timing of the replacement of human with murine stromal cells in human CRC xenograft has not been fully elucidated. We hypothesize that orthologous murine transcripts functionally substitutes for the loss due to replacement of human stromal geneS. Materials and Methods: Human CRC were implanted in athymic nude mice in replicates and followed-up over time. Using next-generation sequencing, we determined the temporal kinetics of human stromal cell replacement with the orthologous murine transcriptS. Results: CRC cell-induced re-organization of the normal, quiescent murine stromal cells into a protumorigenic phenotype supporting human CRC growth occurs at initial implantation. Conclusion: Murine cell replacement occurs in a time-and size-dependent manner.

Original languageEnglish (US)
Pages (from-to)3405-3412
Number of pages8
JournalAnticancer Research
Issue number7
StatePublished - Jul 1 2017



  • Human colorectal carcinoma
  • Next-generation sequencing
  • Patient derived xenografts

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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