Abstrakti
Integrin-dependent crosstalk between cell-matrix adhesions and cell-cell junctions is critical for controlling endothelial permeability and proliferation in cancer and inflammatory diseases but remains poorly understood. Here, we investigated how acetylation of the distal NPKY-motif of Integrin-β1 influences endothelial cell physiology and barrier function. Expression of an acetylation-mimetic β1-K794Q-GFP mutant led to the accumulation of immature cell-matrix adhesions accompanied by a transcriptomic reprograming of endothelial cells, involving genes associated with cell adhesion, proliferation, polarity, and barrier function. β1-K794Q-GFP induced constitutive MAPK signaling, junctional impairment, proliferation, and reduced contact inhibition at confluence. Structural analysis of Integrin-β1 interaction with KINDLIN2, biochemical pulldown assay, and binding energy determination by using molecular dynamics simulation showed that acetylation of K794 and the K794Q-mutant increased KINDLIN2 binding affinity to the Integrin-β1. Thus, enhanced recruitment of KINDLIN2 to Lysine-acetylated Integrin-β1 and resulting modulation of barrier function, offers new therapeutic possibilities for controlling vascular permeability and disease conditions.
| Alkuperäiskieli | Englanti |
|---|---|
| Artikkeli | 110129 |
| Julkaisu | iScience |
| Vuosikerta | 27 |
| Numero | 6 |
| DOI - pysyväislinkit | |
| Tila | Julkaistu - 21 kesäk. 2024 |
| OKM-julkaisutyyppi | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä |
Rahoitus
This work benefited financially from grants from the Sir Jules Thorn Charitable Overseas Trust Reg (to A.S.), Gertrude von Meissner Foundation (to A.S. and B.W.H.), Geneva Cancer Foundation (to A.S. and B.W.H.), Dinu Lipatti Foundation (to A.S. and B.W.H.) and the Swiss National Science Foundation (310030-185261 to B.W.H). A.S. was recipient of fellowship for Ma\u00EEtre-Assistant of the Faculty of Medicine of University of Geneva. We thank the core facilities of the Faculty of Medicine of University of Geneva including the Genomic, Flow cytometry and Bioimaging core facilities. We are grateful to St\u00E9phane Konig, Katharina Rickenbach, Monica Julio Barreto, Patricia Ropraz, Christelle Barraclough, Didier Chollet and C\u00E9line Delucinge-Vivier for technical supports. V.V.M. acknowledges support by the Academy of Finland (grant 323021). V.H. acknowledges support by Sigrid Juselius Foundation and Cancer Foundation Finland. We acknowledge CSC \u2013 IT Center for Science for computational resources. Part of this work was supported by an NIH Grant GM119560 (to J.W.), an ASH Bridge Grant (to J.W.), and an ACS Grant RSG-15-167-01-DMC (to J.W.). Conceptualization: A.S. and B.W.-H.; methodology: A.S. V.V.M. P.Z. V.P.H. J.W. and B.W.-H.; investigation: A.S. V.M. P.Z. V.H. J.W. and B.W.-H.; writing \u2013 drafting and editing: A.S. V.M. P.Z. V.H. J.W. and B.W.-H. The authors declare no competing financial interests.
| Rahoittajat | Rahoittajan numero |
|---|---|
| Gertrude von Meissner-Stiftung | |
| Faculty of Medicine of University of Geneva | |
| Dinu Lipatti Foundation | |
| China Scholarship Council | |
| Syöpäsäätiö | |
| Sir Jules Thorn Charitable Overseas Trust Reg | |
| Geneva Cancer Foundation | |
| Sigrid Juséliuksen Säätiö | |
| Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung | 310030-185261 |
| Strategic Research Council at the Research Council of Finland | 323021 |
| National Institutes of Health | GM119560 |
| American Cancer Society | RSG-15-167-01-DMC |
YK:n kestävän kehityksen tavoitteet
Tämä tuotos edistää seuraavia kestävän kehityksen tavoitteita:
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SDG 3 – Hyvä terveys ja hyvinvointi
Julkaisufoorumi-taso
- Jufo-taso 1
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- General
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