Bispecific Antibody Development Services

ProMab Biotechnologies has dedicated itself from the first day to develop monoclonal antibodies almost exclusively. This has given us more than 15 years of experience in antibody development and the platform required for engineering antibodies. We've expanded our capabilities to develop different antibody libraries for screening, antibody sequencing, humanization, and more.

To further ProMab’s position as a leader within antibody development, we have invested in cutting edge technology to generate custom bispecific antibodies using sophisticated engineering, in silico 3-D-modeling and synthetic biology technologies.

Starting from your idea, we can help you design, develop, and validate your bispecific antibody for research and pre-clinical positions.

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Included in Custom Package

Sequencing and design of selected antibody clones
Production of bispecific antibody
Antibody functional validation tests
Sequence information for both the Heavy and Light chains.
Delivery of bispecific antibody

Background

A bispecific antibody is an antibody that includes two different antigen binding sites of monoclonal antibodies that can bind to two different antigens. There are more than 100 different designs of bispecific antibodies as described by Brinkmann et al, 2017.

Since the bispecific antibody can bind two different antigens, it can bind T cells and cancer associated antigen such as CD19-CD3 (Amgen); CEA-CD3, EpCAM-CD3 and others. Bispecific antibodies can recruit T cells by binding CD3 to cancer cells, leading to the secretion of cytokines, granzyme, perforin and ultimately leading to the killing of cancer cells (Figure 1).

Starting at $26,000

The structural type of the bispecific antibody can vary immensely. We can design any type of antibody using our gene-engineering platform and can express these antibodies in mammalian cells (such as HEK293, CHO cells) for large scale production.

Generating a bispecific antibody will need extensive experimentation for the project’s needs. ProMab’s custom bispecific antibody service includes several steps.

DEVELOPMENT STAGE	DESCRIPTION	COST
Phase I *	Generate up to 3 sequences with different designs Generate recombinant antibody DNA plasmid de novo	$6000
Phase II	Generation of bi-specific antibody proteins. Small-scale expression into mammalian cell lines. Verification by SDS-page. Binding analysis by ELISA with recombinant protein antigen. Clones are compared to parental antibody.	$11,500
Phase III	Regeneration of top 2 full length bispecific antibodies. Binding analysis by ELISA. ELISA evaluation of antibodies recognized by anti-mouse antibodies.	$8500
Phase IV	Large scale antibody production	Inquire

Additional Add-On Services

SERVICE	DESCRIPTION	COST
FACS Analysis	Binding analysis by FACS with antigen positive cell lines.	$1000
Octet BLI Binding Assay	Antibody binding affinity analysis by Octet system bio-layer interferometry	Inquire
Biacore^TM SPR Biosensors	Binding and kinetics analysis using Biacore^TM SPR biosensors to determine antibody affinity, Ka, Kd, KD values	$3200

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Our Advantages

Being an antibody development company that has ventured and prevailed into the CAR-T development space, ProMab holds several advantages over our competitors.

One unique advantage ProMab offers is that we have developed many different stable cell lines with tumor antigens to validate many bispecific antibodies. For example: Hela-CD19 cells, CHO-CD22, CHO-CS1, CHO-BCMA, CHO-CD37 , and others.

ProMab has also invested in cutting-edge technology with in-vitro assays utilizing XCelligence^TM System (ACEA/Agilent), as well as an in-house animal facility for in-vivo validation.

Case Study: Bispecific Antibodies

CEA-CD3 FACS

Figure 6. CEA-CD3 bispecific antibody detects CD3 in T cells. CEA-CD3 bispecific antibody specifically recognizes CEA in CEA-positive Lovo cells. CEA-CD3 bispecific antibody does not recognize in CEA-negative/low expression cell lines HCT116 and HT29.