title: Characterization by means of Delaunay triangulation and Voronoi paving of the influence of anti-hormone and/or anti-growth factor antibodies on the in vitro cell growth of human colorectal neoplastic cell lines.
abstract: A new tool is described which makes it possible to evaluate directly the influence of various growth factors on in vitro neoplastic cell growth on the one hand and to look at a concept of differentiation in terms of population dynamics, on the other. This tool relies upon the digital cell image analyses of Feulgen-stained nuclei and the mathematical method of Voronoi paving. This technique enabled us to characterize the influence on the proliferation and the differentiation of the HCT-15 and LoVo colorectal cell lines of anti-gastrin (G), anti-estradiol (E(2)), anti-epidermal growth factor (EGF), anti-luteinizing hormone-releasing hormone (LHRH), and anti-transforming growth factor alpha (TGF alpha) and beta (TGF beta) antibodies. Two variants were set up with respect to each of the two cell lines, i.e, one growing in culture medium supplemented with 5% fetal calf serum (FCS) and another supplemented with 1% FCS+10 nM G+10 nM E(2). The data show that it is possible to characterize the cell clone structure and to assess growth rate concomitantly by direct cell counts. It further appears that while the anti-hormone and/or anti-growth factor antibody-induced effects on growth were relatively similar, these effects were in sharp contrast at the level of cell clone architecture.
authors.affiliation: FREE UNIV BRUSSELS,FAC MED,HISTOL LAB,B-1070 BRUSSELS,BELGIUM. CTR RECH PIERRE FABRE,DIV CANC EXPT 1,F-81106 CASTRES,FRANCE. UNIV VIRGINIA,HLTH SCI CTR,DEPT INTERNAL MED,DIV GASTROENTEROL,CHARLOTTESVILLE,VA 22908. FREE UNIV BRUSSELS,HOP UNIV BRUGMANN,SERV ANAT PATHOL,B-1020 BRUSSELS,BELGIUM. UNIV MONTPELLIER 1,CNRS URA 1845,LAB CHIM & PHARMACOL MOL INTERET BIOL,MONTPELLIER,FRANCE.
authors.forename: A
authors.initials: A
authors.lastname: Kruczynski
authors.forename: P
authors.initials: P
authors.lastname: Yeaton
authors.forename: F
authors.initials: F
authors.lastname: Darro
authors.forename: I
authors.initials: I
authors.lastname: Camby
authors.forename: C
authors.initials: C
authors.lastname: Deprez
authors.forename: J
authors.initials: J
authors.lastname: Martinez
authors.forename: J
authors.initials: J
authors.lastname: Pasteels
authors.forename: R
authors.initials: R
authors.lastname: Kiss