Establishment of a novel orthotopic xenograft model of human gallbladder carcinoma View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2007-05

AUTHORS

Jan-Hendrik Egberts, Bodo Schniewind, Clemens Schafmayer, Marie-Luise Kruse, Bence Sipos, Fred Fändrich, Holger Kalthoff, Jürgen Tepel

ABSTRACT

OBJECTIVE: Gallbladder cancer is characterized by high morbidity and mortality. An appropriate human xenograft animal model could serve as a research tool to investigate new therapeutic strategies. SUMMARY BACKGROUND DATA: To date, the few reports describing a xenograft animal model showed significant limitations. We improved a murine orthotopic human xenotransplantation model by implanting human gallbladder carcinoma cells directly into the lumen of the gallbladder. METHODS: Mz-ChA-1 cells were orthotopically injected into the gallbladder of Severe Combined Immune Deficiency (SCID) beige mice inducing the growth of solid tumors. The natural course of the disease, tumor growth, and metastases were analyzed. The cytotoxic drug gemcitabine was tested in vitro and in vitro. RESULTS: All animals revealed solid tumors in the inoculated area with liver infiltration. The median tumor volume in the untreated group was significantly higher than in the gemcitabine-treated group. Immunohistochemical staining revealed expression of human cytokeratin 7 and cytokeratin 8. To analyze tumor cell proliferation, the tumors were stained for the antigen Ki-67, and labeling indices were calculated for both groups. Animals receiving gemcitabine treatment showed significantly lower mean labeling indices. In vitro investigation revealed a significant reduction of DNA synthesis. DNA fragmentation, as a measure of apoptosis, was elevated by roughly 20% within 24 h of treatment. With this, we successfully established an orthotopic xenotransplant animal model and investigated the in vitro and in vivo effects of gemcitabine in human xenografted Mz-ChA-1 gallbladder adenocarcinoma. CONCLUSION: This model resembles the clinical situation as closely as possible and offers a relevant option for the preclinical testing of new therapeutic strategies. More... »

PAGES

141-148

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s10585-007-9058-x

DOI

http://dx.doi.org/10.1007/s10585-007-9058-x

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1046152406

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/17406986


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Download the RDF metadata as:  json-ld nt turtle xml License info

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Turtle is a human-readable linked data format.

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RDF/XML is a standard XML format for linked data.

curl -H 'Accept: application/rdf+xml' 'https://scigraph.springernature.com/pub.10.1007/s10585-007-9058-x'


 

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