Action of adenosine triphosphate on human skin and gingival fibroblasts. Protective action of fibronectin.
If cultured in media supplemented with adenosine triphosphate (ATP), EDTA, trypsin, thrombin, or incubated at 0-15 degrees C, human skin fibroblasts (HSF) and human gingival fibroblasts (HGF) change from long attached elliptical to round floating cell cultures. Also, if treated with ATP, EDTA, trypsin, thrombin, or incubated at 0-15 degrees C, the attached HFS or HGF monolayers detach from plastic substratum and form floating round cells that progressively aggregate together and die. The described experiments examined the role of cellular and extracellular ATP on HSF and HGF attachment. These two types of fibroblasts differed in their cellular ATP levels and their response to metabolic inhibitors. ATP causes destruction of microtubules as monitored by colcemid uptake and cellular detachment. Fibronectin protects both HSF and HGF from the effects of extracellular ATP.
D000255:Adenosine Triphosphate / Q000494:pharmacology*; D002448:Cell Adhesion / Q000187:drug effects; D002478:Cells, Cultured; D003078:Colchicine / Q000494:pharmacology; D005347:Fibroblasts / Q000187:drug effects; D005353:Fibronectins / Q000494:pharmacology*; D005881:Gingiva / Q000166:cytology / Q000187:drug effects*; D006801:Humans; D008870:Microtubules / Q000187:drug effects; D012867:Skin / Q000166:cytology / Q000187:drug effects*
D005353:Fibronectins; D000255:Adenosine Triphosphate; D003078:Colchicine