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CD44 engagement enhances acute myeloid leukemia cell adhesion to the bone marrow microenvironment by increasing VLA-4 avidity
Adhesive properties of leukemia cells shape the degree of organ infiltration and the extent of leukocytosis. CD44 and the integrin VLA-4, a CD49d/CD29 heterodimer, are important factors in progenitor cell adhesion in bone marrow. Here, we report their cooperation in acute myeloid leukemia (AML) by a...
Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Fondazione Ferrata Storti
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8327716/ https://www.ncbi.nlm.nih.gov/pubmed/32616529 http://dx.doi.org/10.3324/haematol.2019.231944 |
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author | Gutjahr, Julia C. Bayer, Elisabeth Yu, Xiaobing Laufer, Julia M. Höpner, Jan P. Tesanovic, Suzana Härzschel, Andrea Auer, Georg Rieß, Tanja Salmhofer, Astrid Szenes, Eva Haslauer, Theresa Durand-Onayli, Valerie Ramspacher, Andrea Pennisi, Sandra P. Artinger, Marc Zaborsky, Nadja Chigaev, Alexandre Aberger, Fritz Neureiter, Daniel Pleyer, Lisa Legler, Daniel F. Orian-Rousseau, Veronique Greil, Richard Hartmann, Tanja N. |
author_facet | Gutjahr, Julia C. Bayer, Elisabeth Yu, Xiaobing Laufer, Julia M. Höpner, Jan P. Tesanovic, Suzana Härzschel, Andrea Auer, Georg Rieß, Tanja Salmhofer, Astrid Szenes, Eva Haslauer, Theresa Durand-Onayli, Valerie Ramspacher, Andrea Pennisi, Sandra P. Artinger, Marc Zaborsky, Nadja Chigaev, Alexandre Aberger, Fritz Neureiter, Daniel Pleyer, Lisa Legler, Daniel F. Orian-Rousseau, Veronique Greil, Richard Hartmann, Tanja N. |
author_sort | Gutjahr, Julia C. |
collection | PubMed |
description | Adhesive properties of leukemia cells shape the degree of organ infiltration and the extent of leukocytosis. CD44 and the integrin VLA-4, a CD49d/CD29 heterodimer, are important factors in progenitor cell adhesion in bone marrow. Here, we report their cooperation in acute myeloid leukemia (AML) by a novel non-classical CD44-mediated way of inside-out VLA-4 activation. In primary AML bone marrow samples from patients and the OCI-AML3 cell line, CD44 engagement by hyaluronan induced inside-out activation of VLA-4 resulting in enhanced leukemia cell adhesion on VCAM-1. This was independent of VLA-4 affinity regulation but based on ligand-induced integrin clustering on the cell surface. CD44-induced VLA-4 activation could be inhibited by the Src family kinase inhibitor PP2 and the multikinase inhibitor midostaurin. As a further consequence, the increased adhesion on VCAM-1 allowed AML cells to bind stromal cells strongly. Thereby, the VLA-4/VCAM-1 interaction promoted activation of Akt, MAPK, NF-kB and mTOR signaling and decreased AML cell apoptosis. Collectively, our investigations provide a mechanistic description of an unusual CD44 function in regulating VLA-4 avidity in AML, enhancing AML cell retention in the supportive bone marrow microenvironment. |
format | Online Article Text |
id | pubmed-8327716 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Fondazione Ferrata Storti |
record_format | MEDLINE/PubMed |
spelling | pubmed-83277162021-08-11 CD44 engagement enhances acute myeloid leukemia cell adhesion to the bone marrow microenvironment by increasing VLA-4 avidity Gutjahr, Julia C. Bayer, Elisabeth Yu, Xiaobing Laufer, Julia M. Höpner, Jan P. Tesanovic, Suzana Härzschel, Andrea Auer, Georg Rieß, Tanja Salmhofer, Astrid Szenes, Eva Haslauer, Theresa Durand-Onayli, Valerie Ramspacher, Andrea Pennisi, Sandra P. Artinger, Marc Zaborsky, Nadja Chigaev, Alexandre Aberger, Fritz Neureiter, Daniel Pleyer, Lisa Legler, Daniel F. Orian-Rousseau, Veronique Greil, Richard Hartmann, Tanja N. Haematologica Article Adhesive properties of leukemia cells shape the degree of organ infiltration and the extent of leukocytosis. CD44 and the integrin VLA-4, a CD49d/CD29 heterodimer, are important factors in progenitor cell adhesion in bone marrow. Here, we report their cooperation in acute myeloid leukemia (AML) by a novel non-classical CD44-mediated way of inside-out VLA-4 activation. In primary AML bone marrow samples from patients and the OCI-AML3 cell line, CD44 engagement by hyaluronan induced inside-out activation of VLA-4 resulting in enhanced leukemia cell adhesion on VCAM-1. This was independent of VLA-4 affinity regulation but based on ligand-induced integrin clustering on the cell surface. CD44-induced VLA-4 activation could be inhibited by the Src family kinase inhibitor PP2 and the multikinase inhibitor midostaurin. As a further consequence, the increased adhesion on VCAM-1 allowed AML cells to bind stromal cells strongly. Thereby, the VLA-4/VCAM-1 interaction promoted activation of Akt, MAPK, NF-kB and mTOR signaling and decreased AML cell apoptosis. Collectively, our investigations provide a mechanistic description of an unusual CD44 function in regulating VLA-4 avidity in AML, enhancing AML cell retention in the supportive bone marrow microenvironment. Fondazione Ferrata Storti 2020-07-02 /pmc/articles/PMC8327716/ /pubmed/32616529 http://dx.doi.org/10.3324/haematol.2019.231944 Text en Copyright© 2021 Ferrata Storti Foundation https://creativecommons.org/licenses/by-nc/4.0/This article is distributed under the terms of the Creative Commons Attribution Noncommercial License (by-nc 4.0) which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. |
spellingShingle | Article Gutjahr, Julia C. Bayer, Elisabeth Yu, Xiaobing Laufer, Julia M. Höpner, Jan P. Tesanovic, Suzana Härzschel, Andrea Auer, Georg Rieß, Tanja Salmhofer, Astrid Szenes, Eva Haslauer, Theresa Durand-Onayli, Valerie Ramspacher, Andrea Pennisi, Sandra P. Artinger, Marc Zaborsky, Nadja Chigaev, Alexandre Aberger, Fritz Neureiter, Daniel Pleyer, Lisa Legler, Daniel F. Orian-Rousseau, Veronique Greil, Richard Hartmann, Tanja N. CD44 engagement enhances acute myeloid leukemia cell adhesion to the bone marrow microenvironment by increasing VLA-4 avidity |
title | CD44 engagement enhances acute myeloid leukemia cell adhesion to the bone marrow microenvironment by increasing VLA-4 avidity |
title_full | CD44 engagement enhances acute myeloid leukemia cell adhesion to the bone marrow microenvironment by increasing VLA-4 avidity |
title_fullStr | CD44 engagement enhances acute myeloid leukemia cell adhesion to the bone marrow microenvironment by increasing VLA-4 avidity |
title_full_unstemmed | CD44 engagement enhances acute myeloid leukemia cell adhesion to the bone marrow microenvironment by increasing VLA-4 avidity |
title_short | CD44 engagement enhances acute myeloid leukemia cell adhesion to the bone marrow microenvironment by increasing VLA-4 avidity |
title_sort | cd44 engagement enhances acute myeloid leukemia cell adhesion to the bone marrow microenvironment by increasing vla-4 avidity |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8327716/ https://www.ncbi.nlm.nih.gov/pubmed/32616529 http://dx.doi.org/10.3324/haematol.2019.231944 |
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