What does this research mean for the field?

Obesity induces IgG hypogalactosylation and subsequent hyposialylation through the previously unrecognized upregulation of WNT3 in B cells. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To identify how obesity alters IgG Fc-linked glycosylation and determine the B cell mechanisms responsible for these changes.

August 30, 2026Glycobiology

B Cell Mechanisms Underlie IgG Glycan Alterations in Obesity

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Authors

JPJun PengFudan University MYMing YangPediatrics and Genetics VMvAnika MijakovacScience Research Laboratory

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Implication

Translational study uncovers that B cell WNT3 upregulation drives IgG hypogalactosylation in adolescent obesity, indicating a novel pathway linking altered antibody glycans to insulin resistance.

Key Points

To identify how obesity alters IgG Fc-linked glycosylation and determine the B cell mechanisms responsible for these changes.
Assessed IgG sialylation and galactosylation patterns in adolescents with and without obesity.
Profiled B cell expression of the glycosylation candidate gene WNT3 in pediatric cohorts and obese mouse models.
Interrogated the functional effects of WNT3 upregulation on IgG galactosylation and sialylation in HEK293FS and ARH-77 B lymphoblast cell models.
Adolescent obesity was characterized by IgG hyposialylation and hypogalactosylation, with the most pronounced glycan deficits observed in females.
WNT3 expression was upregulated in B cells isolated from adolescents with obesity as well as obese mice.
Elevation of WNT3 directly impaired IgG galactosylation and downstream sialylation in both HEK293FS and ARH-77 cell lines.

Cite This Study

Peng et al. (2026) studied this question.

synapsesocial.com/papers/6a93f1176c1a8fb52e79dcfc https://doi.org/10.1093/glycob/cwag070

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Implication

Translational study uncovers that B cell WNT3 upregulation drives IgG hypogalactosylation in adolescent obesity, indicating a novel pathway linking altered antibody glycans to insulin resistance.

B Cell Mechanisms Underlie IgG Glycan Alterations in Obesity

Discussion

Member takes

Implication

Key Points

Cite This Study

B Cell Mechanisms Underlie IgG Glycan Alterations in Obesity

Discussion

Member takes

Implication

Key Points

Cite This Study

Also Consider

Also Consider