Characterization of a murine xenograft model for contrast agent development in breast lesion malignancy assessmentReportar como inadecuado




Characterization of a murine xenograft model for contrast agent development in breast lesion malignancy assessment - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Journal of Biomedical Science

, 23:46

First Online: 17 May 2016Received: 06 January 2016Accepted: 06 May 2016DOI: 10.1186-s12929-016-0261-4

Cite this article as: Yen, TH., Lee, GD., Chai, JW. et al. J Biomed Sci 2016 23: 46. doi:10.1186-s12929-016-0261-4

Abstract

BackgroundThe aim of the study was to develop a nude mouse xenograft model implanted with both benign and malignant xenografts as the preliminary candidate screening tool for contrast agent development in lesion malignancy indication.

ResultsA malignant xenograft either MCF-7 cell-matrigel™ or MDA-MB 231 cell-matrigel and a benign xenograft culture medium-matrigel with cleft and slit-like features of intracanaliculer fibroadenoma were implanted subcutaneously into flanks of individual nu-nu nude mouse with >90 % successful inoculation rate. Both malignant and benign xenografts with volume up to 4 cm and size up to 2 cm after 5 week were characterized in vivo by sonogram exhibiting endogenous morphological contrast features between benign and malignant xenografts, dynamic contrast enhanced multi-detector computed tomography presenting non-targeting exogenous morphological and dynamic contrast features between benign and malignant xenografts, and then were harvested for histological and immunohistochemistry revealing example of targeting-molecular contrast features, such as expression of cancer vascular markers of malignant xenografts. Malignant xenografts appeared morphologically taller than wide axis parallel to skin with angular-ill-defined margin under sonogram observations, revealed more evident rim enhancement, angular margin and washout pattern in the time-density curve from dynamic contrast enhance multi-detector computed tomography images, and had more visible cancer vascular markers CD31 and VEGF expression. With limited number of subjects 5–27 for each group of a specific imaging contrast feature, those imaging contrast features of the xenograft model had larger than 85 % sensitivity, specificity, accuracy, positive and negative prediction values in indicating xenograft malignancy except for results from color Doppler detections.

ConclusionsThe murine xenograft model might provide an earlier efficacy evaluation of new contrast agent candidate for lesion malignancy interrogation with qualitative and quantitative indication before a human study to reduce the risk and conserve the resources time, finance and manpower.

KeywordsContrast agent development Xenograft model Malignancy screening AbbreviationsDCE-MDCTDynamic contrast enhanced multi-detector computed tomography

DMBA7,12-dimethylbenzaanthracene

DMEMDulbecco’s Modified Eagle Medium

FBSFetal bovine serine

HandEHematoxylin and eosin

IHCImmunohistochemistry

MMTVMouse mammary tumor virus

MRIMagnetic resonance imaging

TGFαTransforming growth factor alpha

USSonogram

VEGFVacular endothelial growth factor

Download fulltext PDF



Autor: Tsung-Hsien Yen - Gi-Da Lee - Jyn-Wen Chai - Jiunn-Wang Liao - Jia-Yu Lau - Li-Che Hu - Kuo-Chih Liao

Fuente: https://link.springer.com/







Documentos relacionados