scholarly journals c-myc oncogene gene dosage, serum CEA and CA-15.3 antigen levels, and cellular DNA values in relation to ex vivo chemosensitivity of primary human breast cancer.

2000 ◽  
Vol 47 (1) ◽  
pp. 149-156 ◽  
Author(s):  
B Falkiewicz ◽  
C M Schlotter ◽  
U Bosse ◽  
K Bielawski ◽  
U Vogt

A pilot study on relationships of selected molecular factors (c-myc oncogene average gene copy numbers (AGCN); serum CEA and CA 15.3 antigen levels; tumor cells' DNA values), to the ex vivo chemosensitivity of primary female human breast cancer in a modified adenosine triphosphate cell viability chemosensitivity assay (ATP-CVA), was performed. Four drug combinations were tested. A group of 75 cases of female primary breast cancer was assessed. Numerous correlations were found among molecular factors tested but none, with the exception of tumor grading, of these reflected ex vivo chemosensitivity of tumors tested. The results suggest that the parameters tested may not be important factors related to adjuvant chemoresponsiveness of primary human breast cancer to tested drug combinations.


1991 ◽  
Vol 18 (1) ◽  
pp. 27-32 ◽  
Author(s):  
P. G. Koenders ◽  
L. V. A. M. Beex ◽  
R. Langens ◽  
P. W. C. Kloppenborg ◽  
A. G. H. Smals ◽  
...  




2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Anna A. Nushtaeva ◽  
Anastasia A. Karpushina ◽  
Mikhail S. Ermakov ◽  
Ludmila F. Gulyaeva ◽  
Alexey V. Gerasimov ◽  
...  


2009 ◽  
Vol 23 (1) ◽  
pp. 56-65 ◽  
Author(s):  
Line R. Jensen ◽  
Else M. Huuse ◽  
Tone F. Bathen ◽  
Pål E. Goa ◽  
Anna M. Bofin ◽  
...  


1990 ◽  
Vol 26 (2) ◽  
pp. 183
Author(s):  
P.G. Koendore ◽  
L.V.A.M. Beex ◽  
J.A. Foekens ◽  
Th.J. Benraad


2019 ◽  
Vol 21 (1) ◽  
Author(s):  
Nadine Goldhammer ◽  
Jiyoung Kim ◽  
Vera Timmermans-Wielenga ◽  
Ole William Petersen

AbstractOrganoid cultures are increasingly used to model human cancers experimentally with a view to tailoring personalized medicine and predicting drug responses. Breast cancer is no exception, but in particular, primary breast cancer poses some inherent difficulties due to the frequent presence of residual non-malignant cells in the biopsies. We originally developed an assay for the distinction between malignant and non-malignant structures in primary breast cancer organoid cultures (Petersen et al., Proc Natl Acad Sci (USA) 89(19):9064–8, 1992). Here, we apply this assay to assess the frequency of normal-like organoids in primary breast carcinoma cultures and the cellular composition as a consequence of passaging. We find that in consecutively collected samples of primary human breast cancers, residual non-malignant tissues were observed histologically in five out of ten biopsies. Based on relevant morphogenesis and correct polarization as recorded by expression in luminal epithelial cells of mucin 1 (Muc1), occludin, and keratin 19 (K19) and expression in basal cells of integrin β4, p63, and K14, non-malignant organoids were present in all primary human breast cancer-derived cultures. Furthermore, passaging in a contemporary culture medium was in favor of the selective expansion of basal-like cells. We conclude that organoid cultures of human breast cancers are most representative of the tissue origin in primary culture.



Marine Drugs ◽  
2019 ◽  
Vol 17 (4) ◽  
pp. 201 ◽  
Author(s):  
Sara García-Davis ◽  
Ezequiel Viveros-Valdez ◽  
Ana Díaz-Marrero ◽  
José Fernández ◽  
Daniel Valencia-Mercado ◽  
...  

Macroalgae represent an important source of bioactive compounds with a wide range of biotechnological applications. Overall, the discovery of effective cytotoxic compounds with pharmaceutical potential is a significant challenge, mostly because they are scarce in nature or their total synthesis is not efficient, while the bioprospecting models currently used do not predict clinical responses. Given this context, we used three-dimensional (3D) cultures of human breast cancer explants to evaluate the antitumoral effect of laurinterol, the major compound of an ethanolic extract of Laurencia johnstonii. To this end, we evaluated the metabolic and histopathological effects of the crude extract of L. johnstonii and laurinterol on Vero and MCF-7 cells, in addition to breast cancer explants. We observed a dose-dependent inhibition of the metabolic activity, as well as morphologic and nuclear changes characteristic of apoptosis. On the other hand, a reduced metabolic viability and marked necrosis areas were observed in breast cancer explants incubated with the crude extract, while explants treated with laurinterol exhibited a heterogeneous response which was associated with the individual response of each human tumor sample. This study supports the cytotoxic and antitumoral effects of laurinterol in in vitro cell cultures and in ex vivo organotypic cultures of human breast cancer explants.



1997 ◽  
Vol 33 ◽  
pp. S194
Author(s):  
A. Grothey ◽  
A. Hasenburg ◽  
S Philippou ◽  
R. Voigtmann ◽  
K Quakernack


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