Document Detail

Epidermal growth factor receptor expression affects the efficacy of the combined application of saponin and a targeted toxin on human cervical carcinoma cells.
MedLine Citation:
PMID:  20020492     Owner:  NLM     Status:  MEDLINE    
Cervical cancer is the second most common cancer in women worldwide. Targeting the epidermal growth factor receptor (EGFR) is a very promising approach since it is overexpressed in about 90% of cervical tumors. Here, we quantified the toxic effect of SE, a targeted toxin consisting of epidermal growth factor (EGF) as targeting moiety and the plant toxin saporin-3, on 3 common human cervical carcinoma cell lines (HeLa, CaSki and SiHa) and recently established lines (PHCC1 and PHCC2) from 2 different individuals. A human melanocytic and a mouse cell line served as negative control. Additionally, we combined SE with saponinum album, a saponin composite from Gypsophila paniculata, which exhibited synergistic properties in previous studies. The cell lines, except for SiHa cells, revealed high sensitivity to SE with 50% cell survival in the range of 5-24.5 nM. The combination with saponin resulted in a remarkable enhancement of cytotoxicity with enhancement factors ranging from 9,000-fold to 2,500,000-fold. The cytotoxicity of SE was clearly target receptor specific since free EGF blocks the effect and saporin-3 alone was considerably less toxic. For all cervical carcinoma cell lines, we evinced a clear correlation between EGFR expression and SE sensitivity. Our data indicate a potential use of targeted toxins for the treatment of cervical cancer. In particular, the combination with saponins is a promising approach since efficacy is drastically improved.
Diana Bachran; Stefanie Schneider; Christopher Bachran; Romy Urban; Alexander Weng; Matthias F Melzig; Corinna Hoffmann; Andreas M Kaufmann; Hendrik Fuchs
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International journal of cancer. Journal international du cancer     Volume:  127     ISSN:  1097-0215     ISO Abbreviation:  Int. J. Cancer     Publication Date:  2010 Sep 
Date Detail:
Created Date:  2010-07-27     Completed Date:  2010-08-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0042124     Medline TA:  Int J Cancer     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1453-61     Citation Subset:  IM    
Zentralinstitut für Laboratoriumsmedizin und Pathobiochemie, Charité-Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, D-12200 Berlin, Germany.
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MeSH Terms
Cell Line, Tumor
Cnidarian Venoms / toxicity*
Enzyme-Linked Immunosorbent Assay
Receptor, Epidermal Growth Factor / metabolism*
Saponins / pharmacology*
Uterine Cervical Neoplasms / pathology*
Reg. No./Substance:
0/Cnidarian Venoms; 0/Saponins; EC, Epidermal Growth Factor

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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