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. 2016 Feb;332:46-54.
doi: 10.1016/j.heares.2015.10.020. Epub 2015 Nov 26.

Quantitative PCR Analysis and Protein Distribution of Drug Transporter Genes in the Rat Cochlea

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Quantitative PCR Analysis and Protein Distribution of Drug Transporter Genes in the Rat Cochlea

Senthilvelan Manohar et al. Hear Res. .

Abstract

Membrane transporters can be major determinants in the targeting and effectiveness of pharmaceutical agents. A large number of biologically important membrane transporters have been identified and localized to a variety of tissues, organs and cell types. However, little is known about the expression of key membrane transporters in the inner ear, a promising site for targeted therapeutics, as well as a region vulnerable to adverse drug reactions and environmental factors. In this study, we examined the levels of endogenous membrane transporters in rat cochlea by targeted PCR array analysis of 84 transporter genes, followed by validation and localization in tissues by immunohistochemistry. Our studies indicate that several members of the SLC, VDAC and ABC membrane transporter families show high levels of expression, both at the RNA and protein levels in the rat cochlea. Identification and characterization of these membrane transporters in the inner ear have clinical implications for both therapeutic and cytotoxic mechanisms that may aid in the preservation of auditory function.

Keywords: Cochlea; Immunohistochemistry; Membrane transporter; PCR array.

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