MDR1-MDCK Permeability Assay
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The MDR1-MDCK permeability assay is a widely used in vitro model to evaluate P-glycoprotein (P-gp)–mediated drug efflux, helping researchers predict oral absorption, brain penetration, and drug–drug interaction risks early in development.
Originating from canine kidney epithelial cells, MDCK cells are rapidly proliferating and differentiation, have little expression of transporter proteins, and a limited metabolic function. That is why they are the preferred choice to cell lines such as Caco-2 for measuring human intestinal barrier permeability. By inserting the MDR1 gene into MDCK cells, it forms the MDCK-MDR1 cell line that overly expresses an efflux transporter called P-gp. Leveraging this cell line allows for the assessment of P-gp mediated drug efflux, offering insights into the potential of compounds to traverse critical barriers, such as the blood-brain barrier.
Advantages of MDCK cells
- Quick proliferation and differentiation.
- Simple to culture and manipulate.
- Low metabolic activity for passive permeability studies.
- Minimal transporter expression pre-transfection.
- Good model for biological barriers like the blood-brain barrier.
- High reproducibility for reliable data.
- Adapts to various experimental setups and techniques.
| Feature | Caco-2 | PAMPA | MDR1-MDCK |
|---|---|---|---|
| Model type | Cell-based (intestinal epithelial) | Artificial membrane | Cell-based (P-gp overexpression) |
| Transport mechanism | Passive + multiple transporters | Passive only | Passive + active efflux (P-gp) |
| P-gp evaluation | Moderate | Not applicable | Excellent |
| BBB relevance | Low | Moderate (BBB-PAMPA) | High |
| Intestinal absorption | High | Low–Moderate | Moderate |
| Culture time | 18–21 days | None | 3–5 days |
| Throughput | Low | High | Medium–High |
| Data complexity | High | Low | Moderate |
| Best use stage | Late-stage absorption | Early screening | Lead screening / optimization |
Creative Bioarray's MDR1-MDCK Permeability Assay is designed to provide insights into the potential oral absorption and blood-brain barrier (BBB) penetration of your compounds, guiding your drug discovery efforts with reliable data.
Our Microsomal Stability Assay Service
Workflow
| MDR1-MDCK Permeability Assay | Details |
| Test Article Concentration | 10 μM |
| The integrity of the monolayer | 3 days |
| Number of Replicates | 2 |
| Incubation Condition | Incubation in CO2 incubator at 37ºC for 90 min |
| Assay Buffer | HBSS, pH 7.4 |
| Compound required | 2mg or 100µL 10mM DMSO solution |
| Integrity Marker | Lucifer Yellow |
| Analysis Method | LC-MS/MS quantification |
| Data Delivery |
Papp (apparent permeability coefficient) Efflux Ratio % Recovery |
Service Highlights and Advantages
Accuracy and Reliability
By focusing on P-gp, our service minimizes the complexities linked to multiple transporters, ensuring precise identification of efflux behaviors.
Speed and Efficiency
Our MDCK cells enable swift differentiation, significantly reducing assay duration compared to other methods.
Versatility
Suitable for both passive and active transport assessments, enhancing understanding of drug absorption and brain penetration.
Cost-effectiveness
With a streamlined, automated approach, we deliver high-quality data under competitive pricing.
Regulatory Compliance
Our assays adhere to international guidelines and standards, facilitating seamless integration into regulatory submissions.
Quotation and Ordering
Creative Bioarray offers a consistent and cost-effective MDR1-MDCK permeability assay service. With a team of specialists and extensive experience in this field, we deliver high-quality data and tailored results to suit your project's specific needs. We also provide Caco-2 permeability assay and Parallel Artificial Membrane Permeability Assay (PAMPA). If you have additional requirements or questions, do not hesitate to contact us.
FAQ
1. Can I request specific conditions for my assay, such as using temperature-controlled chambers?
Absolutely. We offer customizable assay conditions to meet your specific research needs. Please inquire during the project setup to discuss your requirements.
2. How to choose the right cell line for permeability experiments?
Choosing the appropriate cell line depends on the specific needs of the study. The MDCK cell line is often used as an alternative to Caco-2 cells due to its shorter culture time, better prediction of BBB permeability, and closer approximation of passive permeability. If evaluating P-gp substrates is required, the MDCK-MDR1 cell line is an ideal choice.
3. Which types of drug research is this service suitable for?
This service is suitable for researching membrane transport characteristics of various small molecule drugs, biologics, etc.It is particularly prevalent in new drug screening, studies on drug absorption mechanisms, and more.
4. How to interpret MDCK-MDR1 permeability test data?
Interpreting the MDCK-MDR1 permeability test data mainly focuses on indicators like Papp (apparent permeability coefficient), Efflux Ratio, and % Recovery. By measuring the transport of compounds across the MDCK-MDR1 cell monolayer, these indicators can be calculated to determine whether the compound undergoes P-gp mediated active efflux as well as its permeability in the intestine, blood-brain barrier, and other sites.
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