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Reference glycan structure libraries of primary human cardiomyocytes and pluripotent stem cell-derived cardiomyocytes reveal cell-type and culture stage-specific glycan phenotypes
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Abstract
Cell surface glycoproteins play critical roles in maintaining cardiac structure and function in health and disease and the glycan-moiety attached to the protein is critical for proper protein folding, stability and signaling [1]. However, despite mounting evidence that glycan structures are key modulators of heart function and must be considered when developing cardiac biomarkers, we currently do not have a comprehensive view of the glycans present in the normal human heart. In the current study, we used porous graphitized carbon liquid chromatography interfaced with mass spectrometry (PGC-LC-MS) to generate glycan structure libraries for primary human heart tissue homogenate, cardiomyocytes (CM) enriched from human heart tissue, and human induced pluripotent stem cell derived CM (hiPSC-CM). Altogether, we established the first reference structure libraries of the cardiac glycome containing 265 N- and O-glycans. Comparing the N-glycome of CM enriched from primary heart tissue to that of heart tissue homogenate, the same pool of N-glycan structures was detected in each sample type but the relative signal of 21 structures significantly differed between samples, with the high mannose class increased in enriched CM. Moreover, by comparing primary CM to hiPSC-CM collected during 20-100 days of differentiation, dynamic changes in the glycan profile throughout in vitro differentiation were observed and differences between primary and hiPSC-CM were revealed. Namely, >30% of the N-glycome significantly changed across these time-points of differentiation and only 23% of the N-glycan structures were shared between hiPSC-CM and primary CM. These observations are an important complement to current genomic, transcriptomic, and proteomic profiling and reveal new considerations for the use and interpretation of hiPSC-CM models for studies of human development, disease, and drug testing. Finally, these data are expected to support future regenerative medicine efforts by informing targets for evaluating the immunogenic potential of hiPSC-CM and harnessing differences between immature, proliferative hiPSC-CM and adult primary CM.
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Metadata
- Authors
- Ashwood, C., Waas, M., Weerasekera, R., & Gundry, R. L.
- Affiliations
- Medical College of Wisconsin (US)
- Corresponding author
- Gundry, Rebekah L.
- Venue
- Journal of Molecular and Cellular Cardiology
- Publisher
- Elsevier BV
- Published
- 2020-02
- Volume
- 139
- Pages
- 33-46
- ISSN
- 0022-2828 (ISSN-L)
- PMC
- PMC7852319
- OpenAlex
- W3003087420
- Cited by
- 25
- References
- 93
- Citations by year
- 2026: 2 · 2025: 2 · 2024: 3 · 2023: 4 · 2022: 3 · 2021: 8 · 2020: 3
- FWCI
- 1.46
- Type
- journal article
- Language
- en
- Open access
- green
- doi.org
- Licence
- Locations
- Journal of Molecular and Cellular Cardiology (publishedVersion)
- bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Institutes of Health
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Glycosylation and Glycoproteins Research
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Viral Infectious Diseases and Gene Expression in Insects
- Physical Sciences › Chemistry › Organic Chemistry › Carbohydrate Chemistry and Synthesis
- Keywords
- N-glycans, O-glycans, cardiomyocytes, hiPSC-derived cardiomyocytes, high-mannose glycans, cell surface glycoproteins, cardiac biomarkers, immunogenicity
- MeSH terms
- Cells, Cultured, Female, Glycosylation, Humans, Male, Phenotype, Polysaccharides, Time Factors, Artifacts, Tissue Fixation, Principal Component Analysis, Myocytes, Cardiac, Glycomics, Induced Pluripotent Stem Cells
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- Ashwood, C., Waas, M., Weerasekera, R., & Gundry, R. L. (2020). Reference glycan structure libraries of primary human cardiomyocytes and pluripotent stem cell-derived cardiomyocytes reveal cell-type and culture stage-specific glycan phenotypes. Journal of Molecular and Cellular Cardiology. https://doi.org/10.1016/j.yjmcc.2019.12.012
