PMID- 36891308 OWN - NLM STAT- MEDLINE DCOM- 20230310 LR - 20230327 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 14 DP - 2023 TI - The melanoma tumor glyco-code impacts human dendritic cells' functionality and dictates clinical outcomes. PG - 1120434 LID - 10.3389/fimmu.2023.1120434 [doi] LID - 1120434 AB - Subversion of immunity is a hallmark of cancer development. Dendritic cells (DCs) are strategic immune cells triggering anti-tumor immune responses, but tumor cells exploit their versatility to subvert their functions. Tumor cells harbor unusual glycosylation patterns, which can be sensed through glycan-binding receptors (lectins) expressed by immune cells that are crucial for DCs to shape and orientate antitumor immunity. Yet, the global tumor glyco-code and its impact on immunity has not been explored in melanoma. To decrypt the potential link between aberrant glycosylation patterns and immune evasion in melanoma, we investigated the melanoma tumor glyco-code through the GLYcoPROFILE methodology (lectin arrays), and depicted its impact on patients' clinical outcome and DC subsets' functionality. Specific glycan patterns correlated with clinical outcome of melanoma patients, GlcNAc, NeuAc, TF-Ag and Fuc motifs being associated with poor outcome, whereas Man and Glc residues elicited better survival. Strikingly, tumor cells differentially impacting cytokine production by DCs harbored distinct glyco-profiles. GlcNAc exhibited a negative influence on cDC2s, whereas Fuc and Gal displayed inhibitory impacts on cDC1s and pDCs. We further identified potential booster glycans for cDC1s and pDCs. Targeting specific glycans on melanoma tumor cells restored DCs' functionality. The tumor glyco-code was also linked to the nature of the immune infiltrate. This study unveils the impact of melanoma glycan patterns on immunity, and paves the way for innovative therapeutic options. Glycans/lectins interactions arise as promising immune checkpoints to rescue DCs from tumor' hijacking to reshape antitumor immunity and inhibit immunosuppressive circuits triggered by aberrant tumor glycosylation. CI - Copyright (c) 2023 Sosa Cuevas, Roubinet, Mouret, Thepaut, de Fraipont, Charles, Fieschi, Landemarre, Chaperot and Aspord. FAU - Sosa Cuevas, Eleonora AU - Sosa Cuevas E AD - Institute for Advanced Biosciences, Team: Epigenetics, Immunity, Metabolism, Cell Signaling and Cancer, Inserm U 1209, CNRS UMR 5309, Universite Grenoble Alpes, Grenoble, France. AD - Etablissement Francais du Sang Auvergne-Rhone-Alpes, R&D Laboratory, Grenoble, France. FAU - Roubinet, Benoit AU - Roubinet B AD - GLYcoDiag, Orleans, France. FAU - Mouret, Stephane AU - Mouret S AD - Dermatology, Allergology and Photobiology Department, CHU Grenoble Alpes, Grenoble, France. FAU - Thepaut, Michel AU - Thepaut M AD - Universite Grenoble Alpes, CNRS, CEA, Institut de Biologie Structurale, Grenoble, France. FAU - de Fraipont, Florence AU - de Fraipont F AD - Medical Unit of Molecular Genetic (Hereditary Diseases and Oncology), Grenoble University Hospital, Grenoble, France. FAU - Charles, Julie AU - Charles J AD - Dermatology, Allergology and Photobiology Department, CHU Grenoble Alpes, Grenoble, France. FAU - Fieschi, Franck AU - Fieschi F AD - Universite Grenoble Alpes, CNRS, CEA, Institut de Biologie Structurale, Grenoble, France. AD - Institut Universitaire de France (IUF), Paris, France. FAU - Landemarre, Ludovic AU - Landemarre L AD - GLYcoDiag, Orleans, France. FAU - Chaperot, Laurence AU - Chaperot L AD - Institute for Advanced Biosciences, Team: Epigenetics, Immunity, Metabolism, Cell Signaling and Cancer, Inserm U 1209, CNRS UMR 5309, Universite Grenoble Alpes, Grenoble, France. AD - Etablissement Francais du Sang Auvergne-Rhone-Alpes, R&D Laboratory, Grenoble, France. FAU - Aspord, Caroline AU - Aspord C AD - Institute for Advanced Biosciences, Team: Epigenetics, Immunity, Metabolism, Cell Signaling and Cancer, Inserm U 1209, CNRS UMR 5309, Universite Grenoble Alpes, Grenoble, France. AD - Etablissement Francais du Sang Auvergne-Rhone-Alpes, R&D Laboratory, Grenoble, France. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230220 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Lectins) RN - 0 (Polysaccharides) SB - IM MH - Male MH - Humans MH - *Dendritic Cells MH - *Melanoma/pathology MH - Lectins MH - Glycosylation MH - Polysaccharides PMC - PMC9986448 OTO - NOTNLM OT - glycan OT - human DC subsets OT - immune subversion OT - lectin OT - melanoma COIS- Authors BR and LL were employed by company GLYcoDiag. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2023/03/10 06:00 MHDA- 2023/03/11 06:00 PMCR- 2023/01/01 CRDT- 2023/03/09 02:13 PHST- 2022/12/09 00:00 [received] PHST- 2023/02/01 00:00 [accepted] PHST- 2023/03/09 02:13 [entrez] PHST- 2023/03/10 06:00 [pubmed] PHST- 2023/03/11 06:00 [medline] PHST- 2023/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2023.1120434 [doi] PST - epublish SO - Front Immunol. 2023 Feb 20;14:1120434. doi: 10.3389/fimmu.2023.1120434. eCollection 2023.