Volume 18, Issue 3 2103157
Research Article

Probing Insulin Sensitivity with Metabolically Competent Human Stem Cell-Derived White Adipose Tissue Microphysiological Systems

Lin Qi

Lin Qi

Department of Nutritional Science and Toxicology, College of Natural Resources, University of California, Berkeley, Berkeley, CA, 94720 USA

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Peter-James H. Zushin

Peter-James H. Zushin

Department of Nutritional Science and Toxicology, College of Natural Resources, University of California, Berkeley, Berkeley, CA, 94720 USA

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Ching-Fang Chang

Ching-Fang Chang

Department of Nutritional Science and Toxicology, College of Natural Resources, University of California, Berkeley, Berkeley, CA, 94720 USA

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Yue Tung Lee

Yue Tung Lee

Department of Nutritional Science and Toxicology, College of Natural Resources, University of California, Berkeley, Berkeley, CA, 94720 USA

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Diana L. Alba

Diana L. Alba

Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Francisco, CA, 94143 USA

Diabetes Center, University of California, San Francisco, San Francisco, CA, 94143 USA

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Suneil K. Koliwad

Suneil K. Koliwad

Division of Endocrinology and Metabolism, Department of Medicine, University of California, San Francisco, CA, 94143 USA

Diabetes Center, University of California, San Francisco, San Francisco, CA, 94143 USA

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Andreas Stahl

Corresponding Author

Andreas Stahl

Department of Nutritional Science and Toxicology, College of Natural Resources, University of California, Berkeley, Berkeley, CA, 94720 USA

E-mail: [email protected]

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First published: 10 November 2021
Citations: 3

Abstract

Impaired white adipose tissue (WAT) function has been recognized as a critical early event in obesity-driven disorders, but high buoyancy, fragility, and heterogeneity of primary adipocytes have largely prevented their use in drug discovery efforts highlighting the need for human stem cell-based approaches. Here, human stem cells are utilized to derive metabolically functional 3D adipose tissue (iADIPO) in a microphysiological system (MPS). Surprisingly, previously reported WAT differentiation approaches create insulin resistant WAT ill-suited for type-2 diabetes mellitus drug discovery. Using three independent insulin sensitivity assays, i.e., glucose and fatty acid uptake and suppression of lipolysis, as the functional readouts new differentiation conditions yielding hormonally responsive iADIPO are derived. Through concomitant optimization of an iADIPO-MPS, it is abled to obtain WAT with more unilocular and significantly larger (≈40%) lipid droplets compared to iADIPO in 2D culture, increased insulin responsiveness of glucose uptake (≈2–3 fold), fatty acid uptake (≈3–6 fold), and ≈40% suppressing of stimulated lipolysis giving a dynamic range that is competent to current in vivo and ex vivo models, allowing to identify both insulin sensitizers and desensitizers.

Conflict of Interest

The authors declare no conflict of interest.

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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