Molecular targeting of HER2-overexpressing biliary tract cancer cells with trastuzumab emtansine, an antibody–cytotoxic drug conjugate View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2019-04

AUTHORS

Yoriko Yamashita-Kashima, Yasushi Yoshimura, Takaaki Fujimura, Sei Shu, Mieko Yanagisawa, Keigo Yorozu, Koh Furugaki, Ryota Higuchi, Junichi Shoda, Naoki Harada

ABSTRACT

PURPOSE: Trastuzumab emtansine (T-DM1) provides clinical benefit in breast cancers overexpressing human epidermal growth factor receptor 2 (HER2). However, its efficacy against biliary tract cancers (BTC) has not been evaluated. In this study, the effectiveness of T-DM1 in various BTC cell lines and xenograft models with different levels of HER2 expression was investigated. METHODS: HER2 expression status in xenografts and patient tissue microarrays was assessed by immunohistochemistry (IHC) or fluorescence in situ hybridization (FISH). Cell-surface HER2 expression levels and cell growth inhibition in response to T-DM1 were examined in 17 BTC cell lines. The antitumor activity of T-DM1 was evaluated in four xenograft mouse models with different levels of HER2 expression. The effects of T-DM1 on HER2 signaling, antibody-dependent cell-mediated cytotoxicity (ADCC), cell cycle, and apoptosis were assessed in vitro. RESULTS: Cell-surface expression of HER2 was observed in both gallbladder carcinoma and cholangiocarcinoma tissues. The anti-proliferative activity of T-DM1 was higher in BTC cell lines and breast cancer cell lines with higher levels of HER2 expression. The HER2 status (IHC score|HER2-to-CEP17 ratio by FISH testing) of each BTC xenograft was 3 +|8.3 for KMCH-1, 2 +|4.7 for Mz-ChA-1, 1 +/0|1.4 for OCUG-1, and 0|1.1 for KKU-100, and T-DM1 showed antitumor activity in proportion to the HER2 status. T-DM1 inhibited HER2 signaling and induced ADCC, mitotic arrest, and apoptosis in KMCH-1 cells. CONCLUSIONS: T-DM1 exhibited preclinical activity in HER2-overexpressing BTC. Further evaluation in clinical studies is warranted. More... »

PAGES

659-671

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00280-019-03768-8

DOI

http://dx.doi.org/10.1007/s00280-019-03768-8

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1111507279

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/30659304


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    "description": "PURPOSE: Trastuzumab emtansine (T-DM1) provides clinical benefit in breast cancers overexpressing human epidermal growth factor receptor 2 (HER2). However, its efficacy against biliary tract cancers (BTC) has not been evaluated. In this study, the effectiveness of T-DM1 in various BTC cell lines and xenograft models with different levels of HER2 expression was investigated.\nMETHODS: HER2 expression status in xenografts and patient tissue microarrays was assessed by immunohistochemistry (IHC) or fluorescence in situ hybridization (FISH). Cell-surface HER2 expression levels and cell growth inhibition in response to T-DM1 were examined in 17 BTC cell lines. The antitumor activity of T-DM1 was evaluated in four xenograft mouse models with different levels of HER2 expression. The effects of T-DM1 on HER2 signaling, antibody-dependent cell-mediated cytotoxicity (ADCC), cell cycle, and apoptosis were assessed in vitro.\nRESULTS: Cell-surface expression of HER2 was observed in both gallbladder carcinoma and cholangiocarcinoma tissues. The anti-proliferative activity of T-DM1 was higher in BTC cell lines and breast cancer cell lines with higher levels of HER2 expression. The HER2 status (IHC score|HER2-to-CEP17 ratio by FISH testing) of each BTC xenograft was 3 +|8.3 for KMCH-1, 2 +|4.7 for Mz-ChA-1, 1 +/0|1.4 for OCUG-1, and 0|1.1 for KKU-100, and T-DM1 showed antitumor activity in proportion to the HER2 status. T-DM1 inhibited HER2 signaling and induced ADCC, mitotic arrest, and apoptosis in KMCH-1 cells.\nCONCLUSIONS: T-DM1 exhibited preclinical activity in HER2-overexpressing BTC. Further evaluation in clinical studies is warranted.", 
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Download the RDF metadata as:  json-ld nt turtle xml License info

HOW TO GET THIS DATA PROGRAMMATICALLY:

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curl -H 'Accept: application/ld+json' 'https://scigraph.springernature.com/pub.10.1007/s00280-019-03768-8'

N-Triples is a line-based linked data format ideal for batch operations.

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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/s00280-019-03768-8'


 

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