Cited by 206Pancreatic function and diabetesPluripotent Stem Cells ResearchDiabetes and associated disorders

Single-Cell Transcriptome Profiling Reveals β Cell Maturation in Stem Cell-Derived Islets after Transplantation

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Augsornworawat, Punn, Maxwell, Kristina G., Velazco-Cruz, Leonardo, Millman, Jeffrey R.·2020·Cell Reports

Abstract

Human pluripotent stem cells differentiated to insulin-secreting β cells (SC-β cells) in islet organoids could provide an unlimited cell source for diabetes cell replacement therapy. However, current SC-β cells generated in vitro are transcriptionally and functionally immature compared to native adult β cells. Here, we use single-cell transcriptomic profiling to catalog changes that occur in transplanted SC-β cells. We find that transplanted SC-β cells exhibit drastic transcriptional changes and mature to more closely resemble adult β cells. Insulin and IAPP protein secretions increase upon transplantation, along with expression of maturation genes lacking with differentiation in vitro, including INS, MAFA, CHGB, and G6PC2. Other differentiated cell types, such as SC-α and SC-enterochromaffin (SC-EC) cells, also exhibit large transcriptional changes. This study provides a comprehensive resource for understanding human islet cell maturation and provides important insights into maturation of SC-β cells and other SC-islet cell types to enable future differentiation strategy improvements.

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  • Transcriptional changes after transplantation appeared to occur temporally, as some genes (e.g., G6PC2) increased in expression shortly after transplantation, while others (e.g., MAFA) took several months to upregulate.

    “These transcriptional changes appeared to occur temporally, as some genes (e.g., G6PC2) increased in expression shortly after transplantation, while others (e.g., MAFA) took several months to upregulate.”

    From Developments in stem cell-derived islet replacement therapy for treating type 1 diabetes (2023) · cites this paper as [51]

    The Results section (‘SC-β Cells Mature within Transplanted Grafts’; page unavailable) reports that both G6PC2 and MAFA increase after transplantation and with pseudotime. The Discussion says some maturation genes are expressed before MAFA in pseudotime, but does not identify G6PC2 as one of them. Pseudotime does not establish that G6PC2 rose shortly after transplantation or that MAFA took several months to rise. (LLM, conf=0.87)

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  • This differentiation methodology takes approximately a month or more to complete, and functional maturation can continue for months once the cells are transplanted in vivo.

    “This differentiation methodology takes approximately a month or more to complete, and functional maturation can continue for months once the cells are transplanted in vivo.43,51”

    From Developments in stem cell-derived islet replacement therapy for treating type 1 diabetes (2023) · cites this paper as [51]

    The Results (Retrieval and Identification of SC-Islet Cell Populations after Transplantation; page unavailable) report improved glucose regulation after four weeks, further reversal of diabetes at six months, and increasing glucose-stimulated human C-peptide secretion. This supports functional maturation over months after transplantation. The Methods (Stem cell-derived β Cell differentiation; page unavailable) describe a six-stage protocol and transplantation on days 13–16 of stage 6, but do not establish that the full differentiation takes a month or more. (LLM, conf=0.86)

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  • Known markers of β cell maturation, such as INS, MAFA, IAPP, MNX1, and G6PC2, became more highly expressed in a greater proportion of SC-islet cells after transplantation.

    “Specifically, known markers of β cell maturation, such as INS, MAFA, IAPP, MNX1, and G6PC2, became more highly expressed in a greater proportion of SC-islet cells after transplantation.”

    From Developments in stem cell-derived islet replacement therapy for treating type 1 diabetes (2023) · cites this paper as [51]

    In Results, “SC-β Cells Mature within Transplanted Grafts” (page unavailable), the paper reports higher expression in a greater fraction of grafted SC-β cells for INS, MAFA, MNX1, and G6PC2. It also reports increased IAPP transcript after transplantation, but does not explicitly say IAPP was expressed in a greater fraction of cells. The finding is specific to SC-β cells, rather than SC-islet cells generally. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • SC-EC cells persisted after transplantation and exhibited increased expression of key gene markers of their identity, such as TPH1.

    “Interestingly, SC-EC cells also persisted after transplantation and exhibited increased expression of key gene markers of their identity, such as TPH1.”

    From Developments in stem cell-derived islet replacement therapy for treating type 1 diabetes (2023) · cites this paper as [51]

    The Results section, “Transcriptional Changes of EC Cells within Transplanted Grafts” (page unavailable), says SC-EC cells continue to exist after transplantation and lists several EC-cell genes that are upregulated. It says TPH1 protein is expressed after transplantation, but does not say TPH1 gene expression increased. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Comparison of scRNA-seq and snATAC-seq data from transplanted SC-islets and primary islets has indicated that SC-islets become more similar to human islets over time in vivo in terms of both their transcriptional and chromatin accessibility profiles, though some important differences still remain.

    “Overall, comparison of scRNA-seq and snATAC-seq data from transplanted SC-islets and primary islets has indicated that SC-islets become more similar to human islets overtime in vivo in terms of both their transcriptional and chromatin accessibility profiles, though some important differences still remain.”

    From Developments in stem cell-derived islet replacement therapy for treating type 1 diabetes (2023) · cites this paper as [51]

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Research works printed but not linked: 1

  1. Blum B, Hrvatin S, Schuetz C, Bonal C, Rezania A, and Melton DA (2012). Functional beta-cell maturation is marked by an increased glucose threshold and by expression of urocortin 3. Nat. Biotechnol 30, 261– 264. 22371083 PMC4617627

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Authors
Augsornworawat, P., Maxwell, K. G., Velazco-Cruz, L., & Millman, J. R.
Affiliations
Washington University in St. Louis (US)
Corresponding author
Millman, Jeffrey R.
Venue
Cell Reports
Publisher
Elsevier BV
Published
2020-08
Volume
32
Issue
8
Pages
108067
ISSN
2211-1247 (ISSN-L)
OpenAlex
W3080955168
Cited by
200
References
51
Citations by year
2026: 27 · 2025: 36 · 2024: 42 · 2023: 36 · 2022: 31 · 2021: 26 · 2020: 2
FWCI
21.70
Type
journal article
Language
en
Update notices
erratum (2021-03-09)
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion, cc-by-nc-nd)
  • Digital Commons@Becker (Washington University School of Medicine) (submittedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Foundation for Barnes-Jewish Hospital (UL1TR000448, P30CA91842, T32DK108742)
  • Juvenile Diabetes Research Foundation International (5-CDA-2017-391-A-N)
  • University of Washington
  • National Institutes of Health (P30CA91842, T32DK108742, UL1TR000448, 5R01DK114233)
  • Juvenile Diabetes Research Foundation United States of America
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Pluripotent Stem Cells Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Diabetes and associated disorders
Keywords
beta cell maturation, stem cell-derived islets, islet organoids, human pluripotent stem cells, transplantation, single-cell transcriptomics, insulin secretion, amylin, MafA, G6PC2, alpha cells, enterochromaffin cells, islet differentiation
MeSH terms
Animals, B-Lymphocytes, Humans, Islets of Langerhans, Islets of Langerhans Transplantation, Gene Expression Profiling, Pluripotent Stem Cells, Mice

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