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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Vasoactive intestinal peptide receptor activity and specificity during enterocyte-like differentiation and retrodifferentiation of the human colonic cancerous subclone HT29-18.

Commitment of HT29-18 cells to enterocyte-like differentiation by glucose removal is related to a decreased capacity to generate cAMP after treatment with vasoactive intestinal peptide (VIP), forskolin or sodium fluoride. In contrast, the potency of VIP (EC50 = 1.1 - 1.3 X 10(-10) M) and the pharmacological specificity of the VIP receptor (VIP greater than rh GRF 1-43 greater than PHI greater than secretin) are unchanged during differentiation and retrodifferentiation. These results indicate that disturbances in VIP receptor-post-receptor activity, involving cell surface VIP receptors, membrane and intracellular transducers of hormonal information, occur during enterocyte-like differentiation of the HT29-18 subclone.[1]


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