Volume 62, Issue 36 e202308174
Research Article

Trimming Crystallizable Fragment (Fc) Glycans Enables the Direct Enzymatic Transfer of Biomacromolecules to Antibodies as Therapeutics**

Yang Yang

Yang Yang

State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu, 210023 China

These authors contributed equally to this work.

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Zhentao Song

Zhentao Song

Glyco therapy Biotechnology Co., Ltd., 601/606 Building 12, Hangzhou Pharmaceutical Town, 291 Fucheng Road, Xiasha street, Qiantang Distirct, Hangzhou, Zhejiang, 310058 China

These authors contributed equally to this work.

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Dr. Tian Tian

Dr. Tian Tian

State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu, 210023 China

These authors contributed equally to this work.

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Zihan Zhao

Zihan Zhao

State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu, 210023 China

Department of Urology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, China

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Ji Chen

Ji Chen

Glyco therapy Biotechnology Co., Ltd., 601/606 Building 12, Hangzhou Pharmaceutical Town, 291 Fucheng Road, Xiasha street, Qiantang Distirct, Hangzhou, Zhejiang, 310058 China

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Jiangping Hu

Jiangping Hu

Glyco therapy Biotechnology Co., Ltd., 601/606 Building 12, Hangzhou Pharmaceutical Town, 291 Fucheng Road, Xiasha street, Qiantang Distirct, Hangzhou, Zhejiang, 310058 China

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Xin Jiang

Xin Jiang

Glyco therapy Biotechnology Co., Ltd., 601/606 Building 12, Hangzhou Pharmaceutical Town, 291 Fucheng Road, Xiasha street, Qiantang Distirct, Hangzhou, Zhejiang, 310058 China

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Guoli Yang

Guoli Yang

Glyco therapy Biotechnology Co., Ltd., 601/606 Building 12, Hangzhou Pharmaceutical Town, 291 Fucheng Road, Xiasha street, Qiantang Distirct, Hangzhou, Zhejiang, 310058 China

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Qi Xue

Qi Xue

State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu, 210023 China

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Xinlu Zhao

Xinlu Zhao

State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu, 210023 China

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Dr. Wanxing Sha

Dr. Wanxing Sha

State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu, 210023 China

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Dr. Yi Yang

Corresponding Author

Dr. Yi Yang

Glyco therapy Biotechnology Co., Ltd., 601/606 Building 12, Hangzhou Pharmaceutical Town, 291 Fucheng Road, Xiasha street, Qiantang Distirct, Hangzhou, Zhejiang, 310058 China

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Prof. Dr. Jie P. Li

Corresponding Author

Prof. Dr. Jie P. Li

State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, 163 Xianlin Avenue, Nanjing, Jiangsu, 210023 China

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First published: 12 July 2023
Citations: 1
**

A previous version of this manuscript has been deposited on a preprint server (https://doi.org/10.1101/2022.09.04.506510).

Graphical Abstract

Reducing the complexity of crystallizable fragment glycans dramatically increased the efficiency of the conjugation of large payloads to antibodies via fucosyltransferase-mediated unnatural fucosylation. An anti-human epidermal growth factor receptor 2 and anti-cluster of differentiation 3 bispecific antibody was synthesized which enabled the recruitment and activation of endogenous cytolytic T lymphocyte cells for tumor killing within organoids.

Abstract

Glycoengineering has provided powerful tools to construct site-specific antibody conjugates. However, only small-molecule payloads can be directly transferred to native or engineered antibodies using existing glycoengineering strategies. Herein, we demonstrate that reducing the complexity of crystallizable fragment (Fc) glycans could dramatically boost the chemoenzymatic modification of immunoglobulin G (IgG) via an engineered fucosyltransferase. In this platform, antibodies with Fc glycans engineered to a simple N-acetyllactosamine (LacNAc) disaccharide are successfully conjugated to biomacromolecules, such as oligonucleotides and nanobodies, in a single step within hours. Accordingly, we synthesized an antibody-conjugate-based anti-human epidermal growth factor receptor 2 (HER2)/ cluster of differentiation 3 (CD3) bispecific antibody and used it to selectively destroy patient-derived cancer organoids by reactivating endogenous T lymphocyte cells (T cells) inside the organoid. Our results highlight that this platform is a general approach to construct antibody-biomacromolecule conjugates with translational values.

Conflict of interest

Competing financial interests: Relevant patent applications have been filed by Glyco-therapy Biotechnology Co., Ltd. and/or Nanjing University.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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