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Mirogabalin is a α 2 δ ligand as well as pregabalin. The aim of this study was to clarify whether mirogabalin is a substrate of human LAT1, which involved in absorption and disposition of pregabalin, and to investigate transporters involved in renal secretion and absorption of mirogabalin using transporter-expressing cells and fresh human kidney slices.We employed uptake assay of [ 3 H]mirogabalin by HEK293T or HEK293 cells transiently overexpress human OAT1, OAT3, OCT2, LAT1/4F2hc, LAT2/4F2hc, PEPT1, and PEPT2 proteins. Transport assay of MDCKII cells transiently overexpress OCT2/MATE1, and OCT2/MATE2-K proteins was conducted. Contribution of transporters to renal secretion was investigated by uptake assay using human kidney slices.Uptake clearances of [ 3 H]mirogabalin by OAT1-, OAT3-, OCT2-, PEPT1-, and PEPT2-expressing cells were higher than that by vector cells, but by LAT1/4F2hc and LAT2/4F2hc-expressing cells were not. In transport assay using OCT2/MATE1 and OCT2/MATE2-K cells, [ 3 H]mirogabalin showed directional transport from basolateral to apical side. Contribution of OAT1, OAT3, and OCT2 was observed by uptake of [ 3 H]mirogabalin into the kidney slices.These results indicate that mirogabalin is not a substrate of LAT1, but of PEPT1 and PEPT2 involved in absorption and of OAT1, OAT3, OCT2, MATE1 and/or MATE2-K involved in its urinary secretion. Mirogabalin is a α 2 δ ligand as well as pregabalin. The aim of this study was to clarify whether mirogabalin is a substrate of human LAT1, which involved in absorption and disposition of pregabalin, and to investigate transporters involved in renal secretion and absorption of mirogabalin using transporter-expressing cells and fresh human kidney slices. We employed uptake assay of [ 3 H]mirogabalin by HEK293T or HEK293 cells transiently overexpress human OAT1, OAT3, OCT2, LAT1/4F2hc, LAT2/4F2hc, PEPT1, and PEPT2 proteins. Transport assay of MDCKII cells transiently overexpress OCT2/MATE1, and OCT2/MATE2-K proteins was conducted. Contribution of transporters to renal secretion was investigated by uptake assay using human kidney slices. Uptake clearances of [ 3 H]mirogabalin by OAT1-, OAT3-, OCT2-, PEPT1-, and PEPT2-expressing cells were higher than that by vector cells, but by LAT1/4F2hc and LAT2/4F2hc-expressing cells were not. In transport assay using OCT2/MATE1 and OCT2/MATE2-K cells, [ 3 H]mirogabalin showed directional transport from basolateral to apical side. Contribution of OAT1, OAT3, and OCT2 was observed by uptake of [ 3 H]mirogabalin into the kidney slices. These results indicate that mirogabalin is not a substrate of LAT1, but of PEPT1 and PEPT2 involved in absorption and of OAT1, OAT3, OCT2, MATE1 and/or MATE2-K involved in its urinary secretion.

Mirogabalin, a novel α 2 δ ligand, is not a substrate of LAT1, but of PEPT1, PEPT2, OAT1, OAT3, OCT2, MATE1 and MATE2-K