Volume 127, Issue 7 pp. 2154-2158
Zuschrift

Rational Design of a Humanized Glucagon-Like Peptide-1 Receptor Agonist Antibody

Dr. Yong Zhang

Dr. Yong Zhang

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)

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Dr. Huafei Zou

Dr. Huafei Zou

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)

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Dr. Ying Wang

Dr. Ying Wang

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)

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Dawna Caballero

Dawna Caballero

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)

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Jose Gonzalez

Jose Gonzalez

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)

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Elizabeth Chao

Elizabeth Chao

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)

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Gus Welzel

Gus Welzel

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)

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Dr. Weijun Shen

Dr. Weijun Shen

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)

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Dr. Danling Wang

Dr. Danling Wang

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)

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Dr. Peter G. Schultz

Corresponding Author

Dr. Peter G. Schultz

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)Search for more papers by this author
Dr. Feng Wang

Corresponding Author

Dr. Feng Wang

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)

California Institute for Biomedical Research (Calibr), 11119 N. Torrey Pines Road, La Jolla, CA 92037 (USA)Search for more papers by this author
First published: 29 December 2014
Citations: 4

Abstract

Bovine antibody BLV1H12 possesses a unique “stalk–knob” architecture in its ultralong heavy chain CDR3, allowing substitutions of the “knob” domain with protein agonists to generate functional antibody chimeras. We have generated a humanized glucagon-like peptide-1 (GLP-1) receptor agonist antibody by first introducing a coiled-coil “stalk” into CDR3H of the antibody herceptin. Exendin-4 (Ex-4), a GLP-1 receptor agonist, was then fused to the engineered stalk with flexible linkers, and a Factor Xa cleavage site was inserted immediately in front of Ex-4 to allow release of the N-terminus of the fused peptide. The resulting clipped herceptin–Ex-4 fusion protein is more potent in vitro in activating GLP-1 receptors than the Ex-4 peptide. The clipped herceptin–Ex-4 has an extended plasma half-life of approximately four days and sustained control of blood glucose levels for more than a week in mice. This work provides a novel approach to the development of human or humanized agonist antibodies as therapeutics.

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