Stability of murine, chimeric and humanized antibodies against pre-S2 surface antigen of hepatitis B virus

Park, Sung Sup; Kim, Jeongho; Brandts, John F.; Hong, Hyo Jeong

doi:10.1016/j.biologicals.2003.08.003

Cited by 3 publications

(1 citation statement)

References 25 publications

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“…It has been demonstrated that chimeric antibodies may have increased capacity for immunogenicity compared to humanized or human antibodies [ 6 ]. On the other hand, humanization can increase the stability of antibodies by making the framework regions more compatible [ 7 ]. Another concern is the occupied glycan site at VH N85 (Kabat), where Fab glycosylation could affect the biological properties of the antibody as well as introducing glycan heterogeneity, which must be well controlled during manufacturing [ 8 , 9 ].…”

Section: Introductionmentioning

confidence: 99%

Engineering an Enhanced EGFR Engager: Humanization of Cetuximab for Improved Developability

Goulet¹,

Chatterjee²,

Lee³

et al. 2022

Antibodies

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The epidermal growth factor receptor (EGFR) is a receptor tyrosine kinase whose proliferative effects can contribute to the development of many types of solid tumors when overexpressed. For this reason, EGFR inhibitors such as cetuximab can play an important role in treating cancers such as colorectal cancer and head and neck cancer. Cetuximab is a chimeric monoclonal antibody containing mouse variable regions that bind to EGFR and prevent it from signaling. Although cetuximab has been used clinically since 2004 to successfully control solid tumors, advances in protein engineering have created the opportunity to address some of its shortcomings. In particular, the presence of mouse sequences could contribute to immunogenicity in the form of anti-cetuximab antibodies, and an occupied glycosylation site in FR3 can contribute to hypersensitivity reactions and product heterogeneity. Using simple framework graft or sequence-/structure-guided approaches, cetuximab was humanized onto 11 new frameworks. In addition to increasing humanness and removing the VH glycosylation site, dynamic light scattering revealed increases in stability, and bio-layer interferometry confirmed minimal changes in binding affinity, with patterns emerging across the humanization method. This work demonstrates the potential to improve the biophysical and clinical properties of first-generation protein therapeutics and highlights the advantages of computationally guided engineering.

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