ArticleMethods in molecular biology (Clifton, N.J.)2025
Evaluation of Constitutive or Induced Activation State of the VLA-4 Integrin in Human and Murine Samples.
Article in Methods in molecular biology (Clifton, N.J.), 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The integrin heterodimer CD49d/CD29 (a.k.a. Very Late Antigen-4, VLA-4) mediates cell-cell and cell-matrix interaction through binding to its specific ligands. VLA-4 can be present on the cell surface at different conformation states that affect the binding affinity for the ligands. In chronic lymphocytic leukemia (CLL), higher VLA-4 levels have been demonstrated to be associated with a worse prognosis both in the chemo-immunotherapy era and in the BCR inhibitor setting, in keeping with the role of VLA-4 as a key molecule favoring CLL cell localization in protective niches of bone marrow and lymph nodes. Here, we describe functional flow cytometry-based methods to assess the activation state of the VLA-4 integrin, applicable in both human and murine settings, as well as in fresh or thawed samples. A specific "R" script for analyzing flow cytometry data is also provided.
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