DMPK & ABC Transporter Assay Resources

SeamlessBio distributes the Cell4Pharma ABC Transporter Vesicle Kit panel — HEK293-derived inside-out membrane vesicles for P-gp, BCRP, BSEP, MRP1–5, MRP8, and Control. This resource hub provides technical guidance for DMPK scientists, in vitro ADME specialists, and laboratory managers selecting and validating vesicle-based assay systems for DDI studies and regulatory submissions.

All kits are Ready-to-Use with guaranteed transport ratios, matched control vesicles, all buffers included, and lot-specific Certificate of Analysis. No minimum order quantity. EU supply with batch reservation available.

→ View and order the full Cell4Pharma panel at shop.seamlessbio.de

Technical Comparison Guides

HEK293 vs. Sf9/Baculovirus Vesicles: Which Cell Source for Your DDI Studies?

The most important sourcing decision for vesicle-based assays is the expression system. HEK293 (human) and Sf9 (insect/Baculovirus) vesicles are both accepted by EMA, FDA, and ICH M12 — but they differ in glycosylation, membrane composition, and signal quality. This guide explains the biology behind the difference and when it matters for regulatory submissions.

Vesicle Assay vs. Cell-Based Assay: A Practical Decision Guide

Inside-out membrane vesicle assays and polarised cell monolayers (Caco-2, MDCK-MDR1) answer different scientific questions. Compound permeability, transporter specificity, and throughput requirements all influence which method is appropriate. This guide maps the decision to your compound profile and project stage.

Radiolabel vs. LC-MS/MS vs. Fluorescence Detection in Vesicle Assays

The vesicle transport assay is compatible with three detection modalities — and the choice has direct implications for regulatory acceptance, false-negative risk, and laboratory infrastructure requirements. This guide provides substrate references and a phase-by-phase recommendation for each detection approach.

Vesicle Transport Assay vs. ATPase Assay: Key Differences

ATPase stimulation and vesicle transport measure fundamentally different aspects of transporter biology. Understanding the distinction is essential for interpreting data correctly and avoiding regulatory gaps in your DDI package.

ICH M12 vs. EMA DDI Guideline: What Changes for Your Transporter Package?

The harmonised ICH M12 guideline consolidates EMA, FDA, and PMDA transporter DDI requirements into a single international standard. This guide covers the practical changes for ABC transporter assay strategy — including MATE1/MATE2-K additions, BSEP integration, and what stays the same.

Available Cell4Pharma Vesicle Kits

Transporter	Gene	Primary Regulatory Use
P-glycoprotein (P-gp)	ABCB1 / MDR1	EMA / FDA / ICH M12 — mandatory efflux transporter
BCRP	ABCG2	EMA / FDA / ICH M12 — mandatory efflux transporter
BSEP	ABCB11	DILI / cholestatic hepatotoxicity risk assessment
MRP1	ABCC1	Multidrug resistance; oncology programs
MRP2	ABCC2	Hepatobiliary / renal drug disposition
MRP3	ABCC3	Glucuronide conjugate efflux
MRP4	ABCC4	Renal tubular secretion; nucleotide analogues
MRP5	ABCC5	Nucleoside drug resistance
MRP8	ABCC11	Nucleoside analogue programs
Control vesicles	Empty vector / mock	Background subtraction; substrate specificity confirmation

All kits: 100 reactions · HEK293-derived · Guaranteed transport ratio per lot · All buffers included · Lot-specific CoA · No minimum order quantity · Trial kits available · EU supply chain

→ Order or request a trial kit at shop.seamlessbio.de/collections/cell-culture-reagents

Questions? Contact us at info@seamlessbio.de or +49 851 37932226.