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ANTIBODY AFFINITY MATURATION SERVICES

Home/Antibody production /Affinity maturation

Improve from 5 to over 1000 fold the affinity of your antibody thanks to our guaranteed antibody affinity maturation service. At ProteoGenix, we combine our historical phage display expertise with the knowledge of a renowned affinity maturation expertise to pave your way to the clinic! Because we are engaged for the success of your project, our antibody affinity maturation service includes unique guarantees defined after a preliminary study.

Why choose ProteoGenix for your antibody affinity maturation ?

Antibody affinity maturation expert
Best experts on board

Your affinity maturation project will benefit from 28 years of expertise in therapeutic antibody development in leading pharmaceutical companies.

Guaranteed antibody affinity maturation
Guaranteed service

Our priority is to ensure a safe investment to our customers! Our affinity maturation service includes unique guarantees determined after a robust preliminary study!

IP free affinity maturation by phage display
IP free

You get the full rights of the affinity matured antibodies at the end of the project!

PhD account managers for affinity maturation
PhD account managers

To ensure efficient communication for your affinity maturation projects, we put at your disposal highly skilled PhD account managers.

Antibody affinity maturation phage display libraries
Large libraries of relevant antibodies

Our phage display library design uses 3D modeling in order to limit irrelevant mutations and specifically keep the most appropriate mutations and avoid to generate junk into the library.

Antibody affinity maturation integrated solutions
One stop solution

Trust in a unique partner to bring your therapeutic antibody project straight to the clinic!

Antibody optimization by affinity maturation

ProteoGenix developed a high-class affinity maturation service tailored to increase the affinity of your antibody against its target. Besides affinity, cross-reactivity can also be introduced to avoid the use of surrogate antibodies for preclinical development. Many other parameters can be measured and optimized such as:

  • Stability,

  • Immunogenicity,

  • Chemical liabilities

To do so, site-directed mutagenesis or random mutagenesis is performed on the CDR regions.

  • Site-directed mutagenesis is based on 3D modeling in order to identify key residues involved in the antibody-antigen interaction. Specific mutations on these residues are performed in order to create a large phage display library with low junk variants and high probability of strong affinity enhancement.

  • Random mutagenesis are inserted by the use of error prone PCR. This method allows the construction of large libraries containing 108 starting from 3 to 10 selected antibodies.

Which strategy should you choose for your affinity maturation project?

As affinity maturation is fairly complex, our experts define the most relevant strategy after a preliminary study. This is the best way to ensure our customers a safe investment and to include unique result guarantees to your project. This demonstrates our engagement for the success of your antibody affinity maturation.

Our antibody affinity maturation process

Antibody affinity maturation study
  • Preliminary study by our affinity maturation expert
  • Binding test in relevant application
  • Construction of a phage display screening protocol
  • Definition of a strategy
  • Assessment of a report including evaluation of feasibility and chance of success

Go/No Go 1

  • Design and construction of a mutated phage display library
  • Library design using the mutagenesis strategy previously established
  • Creation of an antibody DNA variant library
  • Creation of the phage display library

Go/No Go 2

  • Library screening and variants selection
  • Library screening using the custom protocol established in first phase (4 to 6 panning rounds)
  • Validation of the best phage variants in the relevant application
  • Affinity comparison of the best single phages

Go/No Go 3

Sequencing and recombinant antibody production
  • Sequencing and recombinant expression of the best variants
  • Antibody sequencing
  • Gene synthesis and subcloning in an adapted expression vector
  • Transient expression test in mammalian cells

Go/No Go 4

Antibody affinity maturation tests
  • Antibody tests
  • Antibody characterization depending on customer's request:
    1. - KD determination: Biacore (SPR), Xelplex (SPRi), OctetRed
    2. - Binding analysis: ELISA
    3. - Stability analysis: DSC
    4. - Aggregate analysis: SEC-HPLC
    5. - Other options available
Step Content Timeline Deliverables
Preliminary study
  • Antibody expression on phage surface
  • Binding test
  • Custom phage display screening protocol establishment
~2 months
  • Detailed report including feasibility and chance of success assessment, description of the project strategy and guarantees provided
Phage display library design and construction
  • Library design
  • Creation of mutated genes library
  • Creation of phage display library
~2 months
  • Detailed report
Library screening and variants selection
  • Library screening
  • Screening and validation of the best phage variants in relevant application
  • Affinity comparison via titer and KD determination
~2 months
  • Detailed report
Sequencing and recombinant antibody expression
  • Antibody sequencing DNA synthesis and sub-cloning into an expression vector
  • Transient expression test in mammalian cells
~2 months
  • Test sample after transient expression test (up to 1mg purified antibody)
  • 1 to 100mg purified antibody depending on customer request
  • Detailed report
Antibody characterization
  • ELISA binding analysis
  • SEC-HPLC aggregate analysis
  • DSC stability analysis
  • Antibody KD determination by Biacore, XelPlex or Octet
~1-3 weeks
  • Detailed report
Options available:

When should you envisage affinity maturation?

Affinity maturation is important in diagnostics and biotherapeutics as well as many other applications requiring strong antibody-antigen interactions.

When developing antibodies, many features can be required such as functionality (inhibiting activities for instance), specificity, use in particular applications and of course affinity. But it can be tricky to select an antibody with all these features from the start. It is therefore relevant to first focus on the functionality and application before working on improving the affinity using our high-class phage display platform.

For more information or to get a quote for our phage display services with the use of Affinity Maturation, don’t hesitate to contact us.