Phorbol esters enhance attachment of NIH/3T3 cells to laminin and type IV collagen substrates
- National Institutes of Health, Bethesda, MD (USA)
The effect of phorbol esters on the adhesive properties of NIH/3T3 mouse fibroblasts was investigated using plastic substrates precoated with the extracellular matrix proteins fibronectin, collagen, and laminin. Treatment with phorbol 12-myristate 13-acetate (PMA) enhanced NIH/3T3 cell attachment to laminin and type IV collagen substrates but had little or no effect on attachment to fibronectin and type I collagen substrates. The effect of PMA in enhancing cell attachment to laminin and type IV collagen substrates was dose dependent between 10{sup {minus}9} and 10{sup {minus}7} M. PMA was effective as early as 30 min; the effect reached a maximum at 2 h and decreased gradually. Phorbol 12, 13-dibenzoate and phorbol 12, 13-diacetate were effective but to a lesser extent and phorbol 12-myristate and phorbol 13-acetate showed little or no effect. These results suggest that PMA may enhance NIH/3T3 cell adhesion through effects on laminin and type IV collagen receptors. Retinoic acid, which itself requires at least 6 h to show an effect on attachment, did not have any effect on cell attachment in 2 h and, if anything, slightly inhibited PMA-enhanced cell attachment to laminin and type IV collagen substrates.
- OSTI ID:
- 5317383
- Journal Information:
- Experimental Cell Research; (United States), Vol. 179:1; ISSN 0014-4827
- Country of Publication:
- United States
- Language:
- English
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FIBROBLASTS
ADHESION
PHORBOL ESTERS
BIOLOGICAL EFFECTS
SCLEROPROTEINS
BIOCHEMISTRY
COLLAGEN
MORPHOLOGY
RECEPTORS
RETINOIC ACID
ANIMAL CELLS
CARBOXYLIC ACID ESTERS
CARCINOGENS
CHEMISTRY
CONNECTIVE TISSUE CELLS
ESTERS
MEMBRANE PROTEINS
ORGANIC COMPOUNDS
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SOMATIC CELLS
560300* - Chemicals Metabolism & Toxicology