Functional Membrane Protein Development Platform
Transmembrane proteins (TPs) are crucial components of cell membranes, involved in processes like substance transport, signal transduction, and cell recognition. Their dysfunction is linked to various diseases, making them key drug targets. Over 60% of known drug targets are TPs, and nearly 90% of antibody drug targets are TPs. However, drug development targeting these proteins is challenging due to their hydrophobic nature, which makes maintaining their native structure difficult in vitro, along with low expression levels of full-length TPs.
To advance drug development, DIMA BIOTECH has developed several solutions for TPs preparation. Using the HEK293 cell expression system, they express recombinant membrane proteins close to their natural conformation. For single-pass TPs, an extracellular domain (ECD) fusion protein system is used, while for full-length TPs like GPCRs and Claudins, they utilize seven major expression platforms, including both purified and non-purified options. The purified platforms include: Synthetic Nanodisc, MSP Nanodisc, PeptiNanodisc, and Detergent systems, while the non-purified platforms include: MNP, VLP, and Exosome systems.
Platform Introduction
Extra Cellular Domain (ECD) Protein
- For Single-Pass Membrane Protein Targets
- 1,000+ Stock ECD Recombinant Proteins
- HEK293 Mammalian Expression System
Multi-pass Transmembrane Protein (MTP)
Purified TPs
Non-purified TPs
Platform Flow
Key advantages
- Mammalian expression system with authentic posttranslational modifications
- Serum free medium culturing system: minimize host cell contamination
- Custom protein and large batch production available
Key applications
- Native immunogens for therapeutic antibody drug development
- Native ligand and receptor identification
- Therapeutic drug In Vitro functional test
- In Vitro protein functional test
- Cell based assays
Case Show
Human BCMA Protein, mFc Tag (PME100035)
Human BCMA, mFc Tag on SDS-PAGE under reducing condition
Human BAFF protein (100 μl/well) (PME100043) binds to Human BCMA protein (PME100035) (EC50 0.03-15.625 ng/ml).
Human BCMA protein(100 μl/well) (PME100035) binds Anti-BCMA Neutralizing antibody (BME100028) (EC50 0.64-80.0 ng/ml).
FC analysis with 1μg/ml Human BCMA Protein on HEK293 cells transfected with human BAFF (Blue) or HEK293 transfected with irrelevant protein (Red).
WB analysis of GPR75-Strep-Nanodisc with anti-GPR75 mAb (DMC100368)
Human GPR75-Strep full length protein-synthetic nanodisc (FLP120031)
Human GPR75-Strep-Nanodisc, C-Flag&Strep Tag on SDS-PAGE
Human GPR75-Strep-Nanodisc (0.2μg/per well) binds to anti-GPR75 mAb (DMC100368) (EC50 15.14ng/ml).
Loaded Human GPR75 mAb (DMC100368) on Pro-A Biosensor, binds human GPR75-Strep synthetic nanodisc (an affinity constant of 5.02nM).
CLDN18.2-Peptidisc (0.2μg/per well) binds anti-CLDN18.2 mAb (DME100179) (EC50 60.34ng/ml).
Human CLDN18.2-Strep full length protein-PeptiNanodisc (FLP420014)
Human CLDN18.2-Strep-PeptiNanodisc on SDS-PAGE
CLDN18.2-Strep-PeptiNanodisc (0.2μg/per well) binds to anti-CLDN18.2 mAb (DME100179) (EC50 60.34ng/ml).
Human CLDN6 full length protein -MNP (FLP100004)
Human CLDN6 MNP (0.5μg/per well) binds to anti-CLDN6 mAb (BME100082) (EC50 34.36ng/ml).
FACS analysis of CLDN6 MNPs: A. Negative Control 1: CLDN6 MNPs; B. Negative Control 2: Control MNPs and anti-CLDN6 Ab (BME100082); C. Negative Control 3: CLDN6 MNPs and anti-GPRC5D Ab; D. CLDN6 MNPs and anti-CLDN6 Ab.
Human CLDN18.2 full length protein-VLP (FLP100006)
Human CLDN18.2 VLP (0.5ug/per well) binds to anti-CLDN18.2 mAb (Zolbetuximab biosililar) (EC50 15.37ng/ml).
FACS analysis of CLDN18.2 VLP: A. Negative Control 1: CLDN18.2 VLP; B. Negative Control 2: Control VLP and anti-CLDN18.2 Ab (Zolbetuximab biosimilar); C. Negative Control 3: CLDN18.2 VLP and anti-BCMA Ab; D. CLDN18.2 VLP and anti-CLDN18.2 Ab.
Human CD24 full length protein-exo (FLP100002)
Human CD24 exosome (0.5μg/per well) binds to anti-CD24 mAb (EC50 is 69.61ng/ml).
TEM image of CD24 exosomes
Nanoparticle Tracking Analysis of CD24 exosomes