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Clinically relevant multidrug transporters are regulated by microRNAs along the human intestine Henrike Bruckmueller, Paul Martin, Meike Kaehler, Sierk Haenisch, Marek Ostrowski, Marek Drozdzik, Werner Siegmund, Ingolf Cascorbi, and Stefan Oswald Mol. Pharmaceutics, Just Accepted Manuscript • Publication Date (Web): 16 May 2017 Downloaded from http://pubs.acs.org on May 17, 2017
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Molecular Pharmaceutics
Clinically relevant multidrug transporters are regulated by microRNAs along the human intestine
Henrike Bruckmueller1, Paul Martin1, Meike Kähler1, Sierk Haenisch1, Marek Ostrowski2, Marek Drozdzik3, Werner Siegmund4, Ingolf Cascorbi1,*, Stefan Oswald4
1
Institute of Experimental and Clinical Pharmacology, University Hospital Schleswig-
Holstein, Campus Kiel;
2
Department of General and Transplantation Surgery,
Pomeranian Medical University, Szczecin, Poland, 3Department of Experimental and Clinical Pharmacology, Pomeranian Medical University, Szczecin, Poland, 4Center of Drug Absorption and Transport (C_DAT), Department of Clinical Pharmacology, University Medicine, Greifswald; Germany
Funding Sources: InnoProfile grant 03IPT613X (BMBF); National Science Centre, Cracow, Poland grant UMO-2015/17/B/NZ7/03066.
*Corresponding author: Ingolf Cascorbi, MD, PhD Institute of Experimental and Clinical Pharmacology University Hospital Schleswig-Holstein, Campus Kiel Arnold-Heller-Str. 3 24105 Kiel, Germany Phone: +49-431-500 30400 Fax: +49-431-500 30400 E-Mail:
[email protected] 1
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Molecular Pharmaceutics
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Molecular Pharmaceutics
Abstract
Intestinal drug transporters are crucial determinants for absorption and oral bioavailability of drugs. In healthy tissue donators, a recent study revealed profound discrepancies between mRNA expression and protein abundance as well as differences in the protein content between small and large intestine for clinically relevant multidrug transporters as the ATP binding cassette transporter subfamily B member 1 (ABCB1) and subfamily C member 3 (ABCC3) and the solute carrier family 15 member 1 (SLC15A1, PEPT1). As the mechanisms underlying these observations remained unclear, the aim of the present study was to elucidate the intestinal regio-specific microRNA profile under physiological conditions and to identify specific microRNAs contributing to the posttranscriptional regulation of major drug transporters. For this purpose tissue samples were collected from six intestinal sites obtained from six healthy tissue donors. The expression of 754 microRNAs was determined using qRT-PCR based low density arrays and microRNA expression levels were correlated with transporter protein abundance quantified by targeted proteomics. A total of 241 microRNA-transporter pairs were identified, showing significant negative correlations to protein abundance (p
