Provided are methods for making highly dedifferentiated and stem-like human cells from human umbilical vein endothelial cells (HUVECs) ectopically expressing integrin β3. Also provided are methods for making ectoderm, mesoderm, and endoderm cells from HUVECs ectopically expressing integrin β3. Also provided are methods for making neural cells, or cells having neuronal-like morphology, from HUVECs ectopically expressing integrin β3. Provided are methods for making cardiomyocytes, or cells having cardiomyocyte-like morphology, from HUVECs ectopically expressing integrin β3. Provided are methods for the production of pluripotent stem cells comprising expressing integrin β3 in primary human endothelial cells. In alternative embodiments, provided are methods for inducing αvβ3 clustering, and to accelerate or facilitate angiogenesis, tissue remodeling or repair, or wound healing, for example, to accelerate healing after an infarction.