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Type: Artigo de periódico
Title: Adhesion forces measured between a calcium blocker drug and its receptor in living cells using atomic force microscope
Author: Pereira, RD
da Silva, MIN
Cotta, MA
Abstract: The adhesion force between the tip of an atomic force microscope cantilever derivatized with nimodipine (a calcium blocker, from the dihydropyridine class, currently used in clinical medicine for hypertension) and living cells of Saccharomyces cerevisiae (unicellular eukaryotes which portray ultrastructural features characteristic of higher eukaryotic cells) was measured. This methodology allowed us to locate (and visualize) pores on the cell surface which may be responsible for calcium transportation in the living cells. The interaction of the cantilever derivatized with the calcium blocker and a pore, which can be a calcium channel, is more intense than a nonderivatized cantilever and the pore. Outside the pore (on the rest of cell surface), a derivatized or a non-derivatized cantilever has the same pattern of adhesion force. The information obtained with this method is very important for the design of new, more potent and less toxic drugs for pharmacological use. (C) 2003 Published by Elsevier B.V. on behalf of the Federation of European Biochemical Societies.
Subject: atomic force microscopy
radiolabeled drugs
nifedipine derivative
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/S0014-5793(03)00910-4
Date Issue: 2003
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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