Jun 19, 1992

1,1,3 Tricyano-2-amino-1-propene (Triap) stimulates choline acetyltransferase activity in vitro and in vivo

Brain Research. Developmental Brain Research
J W Paul, J P DaVanzo


1,1,3 Tricyano-2-amino-1-propene (Triap) is a small molecule that has neurotrophic properties similar to nerve growth factor (NGF). Studies have shown that NGF increases choline acetyltransferase (ChAT) activity, the enzyme responsible for the synthesis of acetylcholine, in several cell lines and in the CNS of adult animals. To investigate whether Triap can cause similar increases in ChAT enzyme activity, we used the PC12 cell line and primary cultures of rat fetal brain tissue to examine Triap's effects. Nanomolar concentrations of Triap produced a 4.2- and 2.1-fold increase in the ChAT activity of PC12 cells and cultured rat fetal brain cells, respectively. This stimulation reached a plateau within 4 days of treatment in the primary fetal brain cultures with the first increases evident within 24 h. In the PC12 cell line, Triap's stimulation of ChAT activity was significantly greater than increases produced by optimal concentrations of NGF. Triap also matched NGF's stimulation of ChAT activity in primary neuronal culture. Triap also potentiated NGF's actions on ChAT activity in the PC12 cell line and in primary fetal neuronal cultures. These increases in enzyme activity correlated with increases in cellular enzyme levels as as...Continue Reading

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Mentioned in this Paper

Malononitrile dimer
Fetal Structures
Cortex Bone Disorders
Adrenal Cortex Diseases
Clinical Enzyme Tests (Procedure)
Western Blotting
August Rats
Nerve Growth Factor

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