Constitutive and basal secretion from the endocrine cell line, AtT-20.

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Constitutive and basal secretion from the endocrine cell line, AtT-20

A variant of the ACTH-secreting pituitary cell line, AtT-20, has been isolated that does not make ACTH, sulfated proteins characteristic of the regulated secretory pathway, or dense-core secretory granules but retains constitutive secretion. Unlike wild type AtT-20 cells, the variant cannot store or release on stimulation, free glycosaminoglycan (GAG) chains. In addition, the variant cells cann...

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Cell Cycle-Dependent Localization of Voltage-Dependent Calcium Channels and the Mitotic Apparatus in a Neuroendocrine Cell Line(AtT-20)

Changes in intracellular calcium are necessary for the successful progression of mitosis in many cells. Both elevation and reduction in intracellular calcium can disrupt mitosis by mechanisms that remain ill defined. In this study we explore the role of transmembrane voltage-gated calcium channels (CaV channels) as regulators of mitosis in the mouse corticotroph cell line (AtT-20). We report th...

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Localization of the small monomeric GTPases Rab3D and Rab3A in the AtT-20 rat pituitary cell line.

We investigated the cellular localization of the small GTPases Rab3D and Rab3A in AtT-20 cells treated with the drug Brefeldin A. Brefeldin A induces the redistribution of the Golgi complex into the endoplasmic reticulum and tubulation of endosomes. However, in Brefeldin A-treated wild-type AtT-20 cells, both Rab3D and Rab3A retained their distribution, indicating that they belong to a nonendos...

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ژورنال

عنوان ژورنال: Journal of Cell Biology

سال: 1991

ISSN: 0021-9525,1540-8140

DOI: 10.1083/jcb.112.5.843