Anti-Gastrin/GAST Antibody Picoband® Fluoro647 Conjugated

Gastrin is a hormone whose main function is to stimulate secretion of hydrochloric acid by the gastric mucosa, which results in gastrin formation inhibition. This hormone also acts as a mitogenic factor for gastrointestinal epithelial cells. Gastrin has two biologically active peptide forms, G34 and G17.

A synthetic peptide corresponding to a sequence in the middle region of human Gastrin/GAST, which shares 68.4% amino acid (aa) sequence identity with mouse and rat GAST.

Expressed in brain, lung, kidney, spleen and testis. Found also in the inner and outer synaptic layers, and the nerve fiber layer in adult and fetal retinas. Found in the supporting cells, outer sulcus cells and spiral ganglion of fetal cochlea. Expressed in cytotoxic tumor-derived T- and NK-cell lines as well as biopsies of nasal NK/T-cell lymphomas. Not detected in normal or in vitro activated peripheral blood cells, CD4 or CD8 lymphocytes or NK cells. Isoform 3 is expressed in brain, heart, cerebellum and kidney. CD1 isoforms, such as isoform 1, have a limited pattern of expression and is detected in testis, retina and cochlea. CD2 isoforms, such as isoforms 4 and 5, are expressed in heart, kidney, thymus, spleen, testis, retina and cochlea. CD3 isoforms, such as isoform 6, are widely expressed.

1. Almeida-Vega, S., Catlow, K., Kenny, S., Dimaline, R., Varro, A. Gastrin activates paracrine networks leading to induction of PAI-2 via MAZ and ASC-1. Am. J. Physiol. Gastrointest. Liver Physiol. 296: G414-G423, 2009. 2. Anderson, L. A., Friedman, L., Osborne-Lawrence, S., Lynch, E., Weissenbach, J., Bowcock, A., King, M.-C. High-density genetic map of the BRCA1 region of chromosome 17q12-q21. Genomics 17: 618-623, 1993. 3. Bentley, P. H., Kenner, G. W., Sheppard, R. C. Structure of human gastrins I and II. Nature 209: 583-585, 1966.