Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com

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Δευτέρα 3 Ιουλίου 2017

Patient-derived Xenografts from Colorectal Carcinoma: A Temporal and Hierarchical Study of Murine Stromal Cell Replacement.

Patient-derived Xenografts from Colorectal Carcinoma: A Temporal and Hierarchical Study of Murine Stromal Cell Replacement.

Anticancer Res. 2017 Jul;37(7):3405-3412

Authors: Chao C, Widen SG, Wood TG, Zatarain JR, Johnson P, Gajjar A, Gomez G, Qiu S, Thompson J, Spratt H, Hellmich MR

Abstract
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.

PMID: 28668828 [PubMed - in process]



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