{"id":3403,"date":"2026-09-10T21:54:00","date_gmt":"2026-09-10T20:54:00","guid":{"rendered":"https:\/\/wheat-quail-856400.hostingersite.com\/?p=3403"},"modified":"2026-10-26T13:56:59","modified_gmt":"2026-10-26T12:56:59","slug":"mrp-transporters-guide-mrp1-mrp8-which-kit","status":"publish","type":"post","link":"https:\/\/seamlessbio.de\/de\/mrp-transporters-guide-mrp1-mrp8-which-kit\/","title":{"rendered":"MRP-Transporter"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"3403\" class=\"elementor elementor-3403\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-78231b28 e-flex e-con-boxed e-con e-parent\" data-id=\"78231b28\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-53f20f41 elementor-widget elementor-widget-text-editor\" data-id=\"53f20f41\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<!--\nWORDPRESS BLOG POST\nSlug: mrp-transporters-guide-mrp1-mrp8-which-kit\nSEO Title: MRP Transporters \u2014 MRP1 to MRP8: Which Vesicle Kit for Which Drug? | SeamlessBio\nMeta Description: A practical guide to MRP1\u2013MRP8 (ABCC family) transporter vesicle assays \u2014 which MRP is relevant for your drug candidate, when each is required by regulators, and which kit to use.\nFocus Keyword: MRP transporter vesicle assay MRP1 MRP2 MRP8\nAdditional Keywords: MRP1 MRP2 vesicle kit DMPK, ABCC transporter assay drug development, MRP2 ABCC2 substrate inhibitor, MRP8 vesicle assay, multidrug resistance protein assay FDA\nCategory: DMPK \u00b7 Transporter Assays\n-->\n<style>\n.sb-bp{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,sans-serif;max-width:780px;margin:0 auto;padding:0 0 60px;color:#202020;line-height:1.75}\n.sb-bp .lede{font-size:18px;font-weight:500;color:#3a4a50;border-left:4px solid #18b7b2;padding-left:20px;margin:0 0 32px;line-height:1.65}\n.sb-bp h2{font-size:24px;font-weight:800;margin:44px 0 14px;color:#111;padding-bottom:10px;border-bottom:2px solid #e2eceb}\n.sb-bp h3{font-size:18px;font-weight:700;margin:28px 0 10px;color:#18b7b2}\n.sb-bp p{margin:0 0 18px}\n.sb-bp ul,.sb-bp ol{margin:0 0 18px;padding-left:24px}\n.sb-bp li{margin-bottom:8px}\n.sb-bp table{width:100%;border-collapse:collapse;font-size:14px;margin:20px 0 28px;display:block;overflow-x:auto}\n.sb-bp th{background:#18b7b2;color:#fff;text-align:left;padding:10px 14px;font-weight:700;white-space:nowrap}\n.sb-bp td{padding:10px 14px;border-bottom:1px solid #e2eceb;vertical-align:top}\n.sb-bp tr:last-child td{border-bottom:none}\n.sb-bp td:first-child{font-weight:600;color:#111}\n.sb-bp a{color:#18b7b2;font-weight:600;text-decoration:none}\n.sb-bp strong{color:#111}\n.sb-bp .qa{background:#f1faf9;border-left:4px solid #18b7b2;border-radius:0 12px 12px 0;padding:18px 22px;margin:24px 0}\n.sb-bp .qa .q{font-weight:700;font-size:15px;color:#111;margin:0 0 6px}\n.sb-bp .qa .a{font-size:14px;margin:0}\n.sb-bp .box{background:#f1faf9;border-left:4px solid #18b7b2;border-radius:0 12px 12px 0;padding:18px 22px;margin:24px 0}\n.sb-bp .cta{background:linear-gradient(135deg,#e4f6f5,#f4fbfb);border:1px solid rgba(24,183,178,.2);border-radius:16px;padding:28px;margin-top:44px;text-align:center}\n.sb-bp .cta h3{color:#111;margin:0 0 8px;font-size:20px}\n.sb-bp .cta p{color:#5b6b71;margin:0 0 16px}\n.sb-bp .cta-btns{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}\n.sb-bp .btn{display:inline-block;background:#18b7b2;color:#fff!important;padding:10px 22px;border-radius:8px;font-weight:700;font-size:14px;text-decoration:none!important}\n.sb-bp .btn-o{display:inline-block;border:2px solid #18b7b2;color:#18b7b2!important;padding:8px 22px;border-radius:8px;font-weight:700;font-size:14px;text-decoration:none!important}\n<\/style>\n<div class=\"sb-bp\">\n<p class=\"lede\">Die MRP-Familie (Multidrug Resistance Protein) aus der ABCC-Unterfamilie umfasst Transporter mit unterschiedlicher Gewebeverteilung, Substratspezifit\u00e4t und regulatorischer Bedeutung. Welches MRP f\u00fcr Ihren Wirkstoffkandidaten relevant ist \u2013 und in welchem Gewebe \u2013, entscheidet dar\u00fcber, welches Vesikel-Kit Sie wann brauchen. Dieser Leitfaden ordnet jedes MRP seinem klinischen Kontext zu.<\/p>\n<!-- BUY BOX (SEO: links to buy pages) -->\n<div class=\"sb-buy-box\" style=\"border:1px solid #cfe9e6;background:#f4fbfa;border-radius:12px;padding:22px 26px;margin:28px auto;max-width:1200px;box-sizing:border-box\">\n<h2 style=\"font-size:22px;line-height:1.3;margin:0 0 6px\">ABC-Transporter-Vesikelkits kaufen (aus HEK293)<\/h2>\n<p style=\"margin:0 0 14px\">Angebot f\u00fcr P-gp-, BCRP-, BSEP- und MRP-Vesikelkits f\u00fcr In-vitro-DDI-Studien anfragen.<\/p>\n<ul style=\"margin:0;padding-left:20px;columns:2 300px;column-gap:32px\">\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/mrp1-vesikelkit-abcc1-hek293\/\" style=\"font-weight:700\">MRP1-Vesikelkit (ABCC1)<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/mrp2-vesikelkit-abcc2-hek293\/\" style=\"font-weight:700\">MRP2-Vesikelkit (ABCC2)<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/mrp3-vesikelkit-abcc3-hek293\/\" style=\"font-weight:700\">MRP3-Vesikelkit (ABCC3)<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/mrp4-vesikelkit-abcc4-hek293\/\" style=\"font-weight:700\">MRP4-Vesikelkit (ABCC4)<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/mrp5-vesikelkit-abcc5-hek293\/\" style=\"font-weight:700\">MRP5-Vesikelkit (ABCC5)<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/mrp8-vesikelkit-abcc11-hek293\/\" style=\"font-weight:700\">MRP8-Vesikelkit (ABCC11)<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/p-gp-vesikelkit-mdr1-hek293\/\">P-gp-Vesikelkit (MDR1\/ABCB1)<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/bcrp-vesikelkit-abcg2-hek293\/\">BCRP-Vesikelkit (ABCG2)<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/bsep-vesikelkit-abcb11-hek293\/\">BSEP-Vesikelkit (ABCB11)<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/p-gp-vesikelkit-fluopgp-substrat\/\">P-gp-Vesikelkit mit FluoPgp-Substrat<\/a><\/li>\n<li style=\"margin:0 0 6px\"><a href=\"https:\/\/seamlessbio.de\/de\/produkt\/kontroll-vesikelkit-hek293\/\">Kontroll-Vesikelkit (Negativkontrolle)<\/a><\/li>\n<\/ul>\n<p style=\"margin:14px 0 0\"><a href=\"https:\/\/seamlessbio.de\/de\/request-quote\/\" style=\"font-weight:600\">Angebot anfordern \u2192<\/a><\/p>\n<\/div>\n<!-- \/BUY BOX -->\n\n\n<h2>Die MRP-Familie im \u00dcberblick<\/h2>\n<p>MRP-Transporter sind ATP-Binding-Cassette-(ABC-)Efflux-Transporter, die Substrate aus Zellen hinausbef\u00f6rdern \u2013 oft gegen ein Konzentrationsgef\u00e4lle. Sie transportieren organische Anionen, konjugierte Metaboliten (Glucuronide, Sulfate, Glutathionkonjugate) und Arzneistoffe. Ihre klinische Relevanz umfasst drei Bereiche: Risiko von Arzneimittelwechselwirkungen (DDI), Lebertoxizit\u00e4t (insbesondere Cholestase bei MRP2) und Multiresistenz in der Onkologie.<\/p>\n\n<table>\n  <thead><tr><th>MRP<\/th><th>Gen<\/th><th>Hauptgewebe<\/th><th>Klinische Relevanz<\/th><th>Regulatorische Vorgaben<\/th><\/tr><\/thead>\n  <tbody>\n    <tr><td>MRP1<\/td><td>ABCC1<\/td><td>Ubiquit\u00e4r \u2013 Lunge, Hoden, Gehirn, Immunzellen<\/td><td>MDR bei soliden Tumoren, Wirkstoff-Efflux aus dem Lungenepithel<\/td><td>EMA: bei Onkologika ber\u00fccksichtigen<\/td><\/tr>\n    <tr><td>MRP2<\/td><td>ABCC2<\/td><td>Leber (kanalikul\u00e4r), Niere, D\u00fcnndarm<\/td><td>Hepatische DDI, Dubin-Johnson-Syndrom, Cholestaserisiko<\/td><td>FDA\/EMA: f\u00fcr die hepatische DDI-Bewertung erforderlich<\/td><\/tr>\n    <tr><td>MRP3<\/td><td>ABCC3<\/td><td>Leber (basolateral), Niere, Darm<\/td><td>Alternativer hepatischer Efflux bei MRP2-Hemmung<\/td><td>Bei lebertoxischen Wirkstoffen ber\u00fccksichtigen<\/td><\/tr>\n    <tr><td>MRP4<\/td><td>ABCC4<\/td><td>Niere (apikal), Leber, Prostata<\/td><td>Renale Wirkstoffausscheidung, Transport von Nukleotidanaloga<\/td><td>Bei renal eliminierten Wirkstoffen ber\u00fccksichtigen<\/td><\/tr>\n    <tr><td>MRP5<\/td><td>ABCC5<\/td><td>Ubiquit\u00e4r \u2013 Gehirn, Herz, Skelettmuskel<\/td><td>Efflux von Nukleotidanaloga, Resistenz gegen antivirale Wirkstoffe<\/td><td>Bei antiviralen Nukleosidanaloga ber\u00fccksichtigen<\/td><\/tr>\n    <tr><td>MRP6<\/td><td>ABCC6<\/td><td>Leber, Niere<\/td><td>Pseudoxanthoma elasticum, wenige Daten zu Wirkstoffsubstraten<\/td><td>Selten erforderlich<\/td><\/tr>\n    <tr><td>MRP7<\/td><td>ABCC10<\/td><td>Ubiquit\u00e4r<\/td><td>Taxanresistenz in der Onkologie<\/td><td>Neu \u2013 nicht routinem\u00e4\u00dfig erforderlich<\/td><\/tr>\n    <tr><td>MRP8<\/td><td>ABCC11<\/td><td>Brust, Leber, Gehirn<\/td><td>Transport von Nukleosidanaloga, Bestimmung des Ohrschmalztyps<\/td><td>Bei Nukleosidanaloga in der Brustkrebstherapie ber\u00fccksichtigen<\/td><\/tr>\n  <\/tbody>\n<\/table>\n\n<h2>Welches MRP verlangen die Beh\u00f6rden?<\/h2>\n<p>Die FDA (Drug Interaction Studies Guidance 2020) und die EMA (Leitlinie zur Untersuchung von Arzneimittelwechselwirkungen 2012, aktualisiert 2024) geben konkret vor, welche Transporter vor einer IND-\/NDA-\/MAA-Einreichung in vitro bewertet werden m\u00fcssen:<\/p>\n\n<h3>MRP2 \u2013 f\u00fcr alle hepatisch eliminierten Wirkstoffe erforderlich<\/h3>\n<p>MRP2 (ABCC2) wird in der kanalikul\u00e4ren Membran der Hepatozyten exprimiert \u2013 es exportiert Arzneistoffe und konjugierte Metaboliten aus den Hepatozyten in die Galle. Hemmt ein gleichzeitig verabreichtes Arzneimittel MRP2, kann die bili\u00e4re Ausscheidung von MRP2-Substraten sinken \u2013 mit erh\u00f6hter systemischer Exposition (DDI) oder intrahepatischer Anreicherung (Cholestaserisiko). FDA und EMA nennen MRP2 als Transporter, der bewertet werden sollte, wenn die hepatische Elimination der Hauptclearanceweg ist oder eine cholestatische DILI bef\u00fcrchtet wird.<\/p>\n\n<h3>MRP1 \u2013 f\u00fcr Onkologika erforderlich<\/h3>\n<p>MRP1 ist der wichtigste Vermittler der Multiresistenz beim kleinzelligen Lungenkarzinom, Brustkrebs und h\u00e4matologischen Malignomen. F\u00fcr Onkologika nennt die EMA-Leitlinie MRP1 ausdr\u00fccklich als Transporter, dessen Hemmpotenzial charakterisiert werden sollte \u2013 besonders bei Krebsarten mit dokumentierter MRP1-vermittelter Resistenz.<\/p>\n\n<h3>MRP3 und MRP4 \u2013 wachsendes regulatorisches Interesse<\/h3>\n<p>MRP3 und MRP4 werden in der Korrespondenz der FDA zunehmend bei Wirkstoffen mit Lebertoxizit\u00e4tssignalen oder \u00fcberwiegend renaler Elimination erw\u00e4hnt. Sie sind nicht generell verpflichtend, sollten aber bewertet werden, wenn es einen mechanistischen Grund f\u00fcr ihre Beteiligung gibt.<\/p>\n\n<h2>Welches Vesikel-Kit von SeamlessBio passt?<\/h2>\n<div class=\"qa\"><p class=\"q\">MRP2 \u2013 Dubin-Johnson-Risiko oder hepatische DDI<\/p><p class=\"a\">Verwenden Sie das <a href=\"https:\/\/seamlessbio.de\/de\/mrp2-vesikelkit\/\">MRP2-Vesikel-Kit (ABCC2)<\/a> \u2013 Membranvesikel mit \u00dcberexpression von humanem MRP2 und passenden Kontrollvesikeln. Standardsubstrate: E217\u03b2G (Estradiol-17\u03b2-glucuronid), LTC4. Standard-Inhibitorkontrolle: MK-571.<\/p><\/div>\n<div class=\"qa\"><p class=\"q\">MRP1 \u2013 MDR-Bewertung in der Onkologie<\/p><p class=\"a\">Verwenden Sie das <a href=\"https:\/\/seamlessbio.de\/de\/mrp1-vesikelkit\/\">MRP1-Vesikel-Kit (ABCC1)<\/a>. Standardsubstrat: LTC4 oder Calcein-AM (fluoreszierend). Standardinhibitor: MK-571.<\/p><\/div>\n<div class=\"qa\"><p class=\"q\">MRP3 \u2013 alternativer hepatischer Efflux<\/p><p class=\"a\">Verwenden Sie das <a href=\"https:\/\/seamlessbio.de\/de\/mrp3-vesikelkit\/\">MRP3-Vesikel-Kit (ABCC3)<\/a>. Standardsubstrat: E217\u03b2G oder Methotrexat.<\/p><\/div>\n<div class=\"qa\"><p class=\"q\">MRP4 \u2013 renale Wirkstoffausscheidung<\/p><p class=\"a\">Verwenden Sie das <a href=\"https:\/\/seamlessbio.de\/de\/mrp4-vesikelkit\/\">MRP4-Vesikel-Kit (ABCC4)<\/a>. Standardsubstrat: DHEAS oder cAMP.<\/p><\/div>\n<div class=\"qa\"><p class=\"q\">MRP5 \u2013 antivirale Nukleosidanaloga<\/p><p class=\"a\">Verwenden Sie das <a href=\"https:\/\/seamlessbio.de\/de\/mrp5-vesikelkit\/\">MRP5-Vesikel-Kit (ABCC5)<\/a>. Standardsubstrat: cAMP oder PMEA.<\/p><\/div>\n<div class=\"qa\"><p class=\"q\">MRP8 \u2013 Nukleosidanaloga in der Brustkrebstherapie<\/p><p class=\"a\">Verwenden Sie das <a href=\"https:\/\/seamlessbio.de\/de\/mrp8-vesikelkit\/\">MRP8 Vesicle Kit (ABCC11)<\/a>. Standardsubstrat: E217\u03b2G oder Methotrexat.<\/p><\/div>\n\n<h2>Vesikelassay-Format \u2013 so funktioniert es<\/h2>\n<p>Alle MRP-Vesikelassays nutzen dasselbe Inside-out-Membranvesikel-Format: Membranvesikel werden aus Zellen hergestellt, die das Ziel-MRP \u00fcberexprimieren, und so umgest\u00fclpt, dass die intrazellul\u00e4re Seite au\u00dfen liegt. ATP treibt den aktiven Transport an \u2013 das Substrat reichert sich im Vesikel an. Eine schnelle Filtration stoppt die Reaktion; das angereicherte Substrat wird per Szintillationsz\u00e4hlung (radioaktiv markiertes Substrat) oder LC-MS\/MS gemessen. Die Transportaktivit\u00e4t wird als Verh\u00e4ltnis des in MRP-exprimierenden Vesikeln angereicherten Substrats zu passenden Kontrollvesikeln (mit Leervektor) angegeben.<\/p>\n<p>Der Assay beantwortet zwei Fragen: Ist Ihre Substanz ein MRP-Substrat? Und hemmt Ihre Substanz den MRP-vermittelten Transport eines bekannten Substrats (DDI-Risiko)?<\/p>\n<div class=\"cta\">\n<h3>MRP1\u2013MRP8-Vesikel-Kits \u2013 exklusiv in DACH \u00fcber SeamlessBio<\/h3>\n<p>SeamlessBio vertreibt die ABC-Transporter-Vesikel-Kits von Cell4Pharma exklusiv in DACH \u2013 MRP1, MRP2, MRP3, MRP4, MRP5, MRP8 sowie BSEP-, P-gp-, BCRP- und Kontroll-Kits.<\/p>\n<div class=\"cta-btns\"><a href=\"https:\/\/seamlessbio.de\/de\/abc-transporter-vesikelkits\/\" class=\"btn-o\">Alle ABC-Transporter-Vesikel-Kits \u2192<\/a>\n<a href=\"https:\/\/seamlessbio.de\/de\/mrp2-vesikelkit\/\" class=\"btn-o\">MRP2-Vesikel-Kit \u2192<\/a>\n<a href=\"https:\/\/seamlessbio.de\/de\/mrp1-vesikelkit\/\" class=\"btn-o\">MRP1-Vesikel-Kit \u2192<\/a>\n<a href=\"https:\/\/seamlessbio.de\/de\/what-is-mrp2-abcc2\/\" class=\"btn-o\">Was ist MRP2? \u2192<\/a>\n<a href=\"https:\/\/seamlessbio.de\/de\/dienstleistung-zum-dmpk-transporter-assay\/\" class=\"btn-o\">DMPK-Assay-Service \u2192<\/a>\n<a href=\"https:\/\/seamlessbio.de\/de\/kontakt\/\" class=\"btn-o\">Angebot anfordern \u2192<\/a><\/div>\n<\/div>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>The MRP (Multidrug Resistance Protein) family of the ABCC subfamily covers several transporters with distinct tissue distributions, substrate specificities, and regulatory relevance. Knowing which MRP matters for your drug candidate \u2014 and in which tissue \u2014 determines which vesicle kit you need and when. This guide maps each MRP to its clinical context. Buy ABC [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-3403","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>MRP Transporters \u2014 MRP1 to 8: Which Vesicle Kit for which Drug?<\/title>\n<meta name=\"description\" content=\"A practical guide to MRP1\u2013MRP8 (ABCC family) transporter vesicle assays \u2014 which MRP is relevant for your drug candidate, when each is required by regulators, and which kit to use.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, 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