Cited by 2953D Printing in Biomedical ResearchTissue Engineering and Regenerative MedicineAngiogenesis and VEGF in Cancer

Engineering Organoid Vascularization

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Grebenyuk, Sergei, Ranga, Adrian·2019·Frontiers in Bioengineering and Biotechnology

Abstract

The development of increasingly biomimetic human tissue analogues has been a long-standing goal in two important biomedical applications: drug discovery and regenerative medicine. In seeking to understand the safety and effectiveness of newly developed pharmacological therapies and replacement tissues for severely injured non-regenerating tissues and organs, there remains a tremendous unmet need in generating tissues with both functional complexity and scale. Over the last decade, the advent of organoids has demonstrated that cells have the ability to reorganize into complex tissue-specific structures given minimal inductive factors. However a major limitation in achieving truly in-vivo-like functionality has been the lack of structured organization and reasonable tissue size. In-vivo, developing tissues are interpenetrated by and interact with a complex network of vasculature which allows not only oxygen, nutrient and waste exchange, but also allow for inductive biochemical exchange and a structural template for growth. Conversely, in-vitro, this aspect of organoid development has remained largely missing, suggesting that these may be the critical cues required for large-scale and more reproducible tissue organization. Here, we review recent technical progress in generating in-vitro vasculature, and seek to provide a framework for understanding how such technologies, together with theoretical and developmentally inspired insights, can be harnessed to enhance next generation organoid development.

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Crossref · 10.3389/fbioe.2019.00039

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  • Kidney organoids have been cultured in an OoC device that enables fluid flow to simulate shear stress and the generation of a vascular network.

    “Kidney organoids have been cultured in an OoC device which enables fluid flow to simulate shear stress107 and the generation of a vascular network108.”

    From Organoids (2022) · cites this paper as [107]

    The ‘Induced Angiogenesis in Engineered Tissues’ section describes a vascular network forming in a microfluidic chip containing human lung fibroblast spheroids. It does not report a vascular network generated with kidney organoids in an organ-on-a-chip device; the citation to this paper is attached to the network-generation part of the sentence, not the shear-stress part. No page number is available in our copy. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • The presence of fluid flow enhances kidney organoids' maturation and favors their vascularization in vitro.

    “A more recent example shows how the presence of fluid flow enhances kidney organoids’ maturation and favors their vascularization in vitro107.”

    From Organoids (2022) · cites this paper as [107]

    Our copy does not report that fluid flow enhances kidney organoid maturation or vascularization in vitro. The ‘Induced Angiogenesis in Engineered Tissues’ section describes vascularization of lung fibroblast spheroids in a microfluidic chip, while the ‘Organoid Vascularization via in vivo Organoid Transplantation’ section discusses vascularization after transplantation; neither addresses the claimed kidney-organoid result. Searches for kidney organoids, fluid flow, and perfusion did not locate it. (LLM, conf=0.76)

    Experimental — accuracy not yet measured

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Authors
Grebenyuk, S., & Ranga, A.
Affiliations
KU Leuven (BE)
Corresponding author
Ranga, Adrian
Venue
Frontiers in Bioengineering and Biotechnology
Published
2019-03-19
Volume
7
Pages
39-39
ISSN
2296-4185 (ISSN-L)
OpenAlex
W2923099616
Cited by
295
References
80
Citations by year
2026: 27 · 2025: 25 · 2024: 35 · 2023: 47 · 2022: 42 · 2021: 73 · 2020: 38 · 2019: 8
FWCI
3.24
Type
journal article
Language
en
Open access
Locations
  • Frontiers in Bioengineering and Biotechnology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Lirias (KU Leuven) (submittedVersion, other-oa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Fonds Wetenschappelijk Onderzoek (G087018N, C14/17/111)
  • KU Leuven (C32/17/027, C14/17/111)
  • Vlaamse regering
  • Interreg
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › 3D Printing in Biomedical Research
  • Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
Keywords
organoids, organoid vascularization, vascular system, tissue engineering, organoid development, tissue organization, drug discovery, regenerative medicine

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