Cited by 63TGF-β signaling in diseasesDevelopmental Biology and Gene RegulationAngiogenesis and VEGF in Cancer

Sox9 and rbpj differentially regulate endothelial to mesenchymal transition and wound scarring in murine endovascular progenitors

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Zhao, Jilai, Patel, Jatin, Kaur, Simranpreet, Sim, Seen-Ling, Wong, Ho Yi, Styke, Cassandra, Hogan, Isabella, Kahler, Sam +9 more·2021·Nature Communications

Abstract

Endothelial to mesenchymal transition (EndMT) is a leading cause of fibrosis and disease, however its mechanism has yet to be elucidated. The endothelium possesses a profound regenerative capacity to adapt and reorganize that is attributed to a population of vessel-resident endovascular progenitors (EVP) governing an endothelial hierarchy. Here, using fate analysis, we show that two transcription factors SOX9 and RBPJ specifically affect the murine EVP numbers and regulate lineage specification. Conditional knock-out of Sox9 from the vasculature ( Sox9 fl/fl /Cdh5-Cre ER RosaYFP ) depletes EVP while enhancing Rbpj expression and canonical Notch signalling. Additionally, skin wound analysis from Sox9 conditional knock-out mice demonstrates a significant reduction in pathological EndMT resulting in reduced scar area. The converse is observed with Rbpj conditionally knocked-out from the murine vasculature ( Rbpj fl/fl /Cdh5-CreER RosaYFP ) or inhibition of Notch signaling in human endothelial colony forming cells, resulting in enhanced Sox9 and EndMT related gene ( Snail, Slug, Twist1, Twist2, TGF-β ) expression. Similarly, increased endothelial hedgehog signaling ( Ptch1 fl/fl /Cdh5-CreER RosaYFP ), that upregulates the expression of Sox9 in cells undergoing pathological EndMT, also results in excess fibrosis. Endothelial cells transitioning to a mesenchymal fate express increased Sox9 , reduced Rbpj and enhanced EndMT. Importantly, using topical administration of siRNA against Sox9 on skin wounds can substantially reduce scar area by blocking pathological EndMT. Overall, here we report distinct fates of EVPs according to the relative expression of Rbpj or Notch signalling and Sox9 , highlighting their potential plasticity and opening exciting avenues for more effective therapies in fibrotic diseases.

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Crossref · 10.1038/s41467-021-22717-9

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  • SOX9 expression in endothelial cells induces skin wound healing.

    “Recently, SOX9 expression in endothelial cells was also found to induce skin wound healing (16).”

    From SOX9 reprograms endothelial cells by altering the chromatin landscape (2022) · cites this paper as [16]

    The Results section, “Loss of Sox9 in the endothelium significantly impairs EndMT and reduces scarring during wound healing” (page not provided), reports the opposite direction: mice lacking endothelial Sox9 healed skin wounds significantly faster than controls. The paper also reports enhanced healing after Sox9 inhibition with siRNA. (LLM, conf=0.89)

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  • In mouse, SOX9 is essential in skin wound healing.

    “Previous work in mouse has shown that SOX9 is essential for the EndMT process that produces functioning heart valves, as well as in skin wound healing, and acts as a master TF (11,16,17,66).”

    From SOX9 reprograms endothelial cells by altering the chromatin landscape (2022) · cites this paper as [16]

    The Results section, “Loss of Sox9 in the endothelium significantly impairs EndMT and reduces scarring during wound healing” (page unavailable), reports that mice with endothelial Sox9 deletion healed skin wounds significantly faster than controls. Topical Sox9 inhibition likewise accelerated closure. The paper therefore does not support the claim that SOX9 is essential for skin wound healing in mice. (LLM, conf=0.88)

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  • In mouse, SOX9 is essential for the EndMT process that produces functioning heart valves.

    “Previous work in mouse has shown that SOX9 is essential for the EndMT process that produces functioning heart valves, as well as in skin wound healing, and acts as a master TF (11,16,17,66).”

    From SOX9 reprograms endothelial cells by altering the chromatin landscape (2022) · cites this paper as [16]

    The Discussion reports that deleting Sox9 in mouse endothelium substantially reduced EndMT and scarring, supporting a role for SOX9 in murine EndMT and wound healing. It does not establish that SOX9 is essential for the EndMT that produces functioning heart valves; its discussion of cardiac cushion EndMT concerns Slug rather than a SOX9 valve experiment (page unavailable in our copy). (LLM, conf=0.85)

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1 of the 54 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. [54]Koh, C. M. in Methods in Enzymology Vol. 533 (ed. Lorsch, J.) Ch. 16 (Academic Press, 2013).

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Authors
Zhao, J., Patel, J., Kaur, S., Sim, S.-L., Wong, H. Y., Styke, C., Hogan, I., Kahler, S., Hamilton, H., Wadlow, R., Dight, J., Hashemi, G., Sormani, L., Roy, E., Yoder, M. C., Francois, M., & Khosrotehrani, K.
Affiliations
  • The University of Queensland (AU)
  • Queensland University of Technology (AU)
Corresponding author
Khosrotehrani, Kiarash
Venue
Nature Communications
Published
2021-05-07
Volume
12
Issue
1
Pages
2564-2564
ISSN
2041-1723 (ISSN-L)
OpenAlex
W3158408472
Cited by
63
References
54
Citations by year
2026: 9 · 2025: 16 · 2024: 13 · 2023: 9 · 2022: 13 · 2021: 3
FWCI
2.98
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • QUT ePrints (Queensland University of Technology) (submittedVersion, cc-by)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by)
  • IUScholarWorks (Indiana University) (submittedVersion, cc-by)
Funders
  • Department of Education and Training | Australian Research Council (DP190103187, DE180100984)
  • Department of Health | National Health and Medical Research Council (APP1125290)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › TGF-β signaling in diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
Keywords
endothelial-to-mesenchymal transition, SOX9, RBPJ, Notch signaling, wound scarring, fibrosis, Hedgehog signaling, PTCH1, snails, Slug, TWIST1, TWIST2, TGF-beta, siRNA therapeutics, skin wound healing
MeSH terms
Animals, Cell Differentiation, Endothelium, Female, Humans, Male, Mice, Inbred C57BL, Wound Healing, Signal Transduction, Transforming Growth Factor beta, Mice, Knockout, Cell Lineage, RNA, Small Interfering, Endothelial Cells, Mice, Immunoglobulin J Recombination Signal Sequence-Binding Protein, Receptors, Notch, Hedgehog Proteins, SOX9 Transcription Factor, Gene Knockout Techniques

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