Modulators of cyclic AMP in monolayer cultures of Y-79 retinoblastoma cells: partial characterization of the response with VIP and glucagon.

Abstract:

:VIP markedly stimulates intracellular cAMP accumulation in the human retinoblastoma Y-79 cell line. cAMP increased about 5-fold above the basal level with 10(-8)M VIP and reached a maximum level (about 70-fold increase) with 2 X 10(-6)M VIP. Glucagon at 6 X 10(-8)M significantly increased cAMP accumulation with a maximal response at 4 X 10(-7)M. Secretin was only effective at micromolar concentrations. Glucagon at 2 X 10(-6)M had a synergistic effect with VIP at 2 X 10(-8)M. Of other substances tested, L-isoproterenol (25-fold increase) and PGE1 (4-fold increase) were most effective. These results demonstrate that VIP and glucagon modulate cAMP accumulation in Y-79 cells and provide a model for studying the effect of these substances on function of neuronal and on malignant cells in vitro.

journal_name

Curr Eye Res

journal_title

Current eye research

authors

Kyritsis A,Koh SW,Chader GJ

doi

10.3109/02713688408997218

subject

Has Abstract

pub_date

1984-02-01 00:00:00

pages

339-43

issue

2

eissn

0271-3683

issn

1460-2202

journal_volume

3

pub_type

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