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The Role of Glycans in Immune Regulation

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Immunology".

Deadline for manuscript submissions: 30 July 2025 | Viewed by 1810

Special Issue Editor


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Guest Editor
State Key Laboratory of Natural and Biomimetic Drugs, Chemical Biology Center, Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
Interests: glycotherapy and medicine; chemical glycobiology; chemoproteomics; cancer biology; genoproteomics

Special Issue Information

Dear Colleagues,

Immune cells are covered by a heavy layer of glycans, serving as essential determinants of the fate of immune responses and potential targets for modulating immune tolerance and activation in various pathologic settings. This coregulatory network involves different glycan structures and their multivalent cis- or trans-interactions with binding receptors. Some glycan and binding receptor interactions (e.g., sialic acids and the Siglecs axis) have been newly recognized as immune checkpoints orthogonal to the well-established protein immune checkpoints (e.g., PD-1/PD-L1). However, deciphering these coregulatory networks is important and is largely complicated by the lack of tools.

This Special Issue aims to provide a platform for functional research on glycans in immune systems. We believe that this Special Issue will contribute to an in-depth understanding of glycoimmunology and the development of interventions to cure related diseases in the future, including cancers, autoimmune inflammation, and chronic infection. We welcome your submissions of original papers and reviews focusing on the immunomodulatory functions of glycans.

Dr. Senlian Hong
Guest Editor

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Keywords

  • glycoimmunology
  • glycotherapy
  • vaccines
  • glycan synthesis
  • immune tolerance

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Published Papers (1 paper)

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Review

16 pages, 1517 KiB  
Review
Glycoscience in Advancing PD-1/PD-L1-Axis-Targeted Tumor Immunotherapy
by Qiyue Sun and Senlian Hong
Int. J. Mol. Sci. 2025, 26(3), 1238; https://doi.org/10.3390/ijms26031238 - 31 Jan 2025
Viewed by 1554
Abstract
Immune checkpoint blockade therapy, represented by anti-PD-1/PD-L1 monoclonal antibodies, has significantly changed the immunotherapy landscape. However, the treatment is still limited by unsatisfactory response rates, immune-related adverse effects, and drug resistance. Current studies have established that glycosylation, a common post-translational modification, is crucial [...] Read more.
Immune checkpoint blockade therapy, represented by anti-PD-1/PD-L1 monoclonal antibodies, has significantly changed the immunotherapy landscape. However, the treatment is still limited by unsatisfactory response rates, immune-related adverse effects, and drug resistance. Current studies have established that glycosylation, a common post-translational modification, is crucial in promoting cancer progression and immune invasion. Targeting aberrant glycosylation in cancers presents precision medicine regimens for monitoring cancer progression and developing personalized medicine. Notably, the immune checkpoints PD-1 and PD-L1 are highly glycosylated, which affects PD-1/PD-L1 interaction and the binding of anti-PD-1/PD-L1 monoclonal antibodies. Recent achievements in glycoscience to enhance patient outcomes, referred to as glycotherapy, have underscored their high potency in advancing PD-1/PD-L1 blockade therapies, i.e., glycoengineered antibodies with improved binding toward PD-1/PD-L1, pharmaceutic inhibitors for core fucosylation and sialylation, and synergistic treatment with the antibody–sialidase conjugate. This review briefly introduces the PD-1/PD-L1 axis and glycosylation and highlights the fundamental and applied advances in glycoscience that improve PD-1/PD-L1 immunoblockade therapies. Full article
(This article belongs to the Special Issue The Role of Glycans in Immune Regulation)
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