**About the Editors**

**Ander Abarrategi** is a biologist and leads the Regenerative Medicine Laboratory at CICbiomaGUNE, Donostia, Spain. He obtained his Ph.D. at Complutense University of Madrid and then was trained as a postdoctoral researcher at Instituto de Salud Carlos III, London Research Institute, The Francis Crick Institute, and University College London. The understanding of bone tissue is the core of his work. He develops biomaterial-based bioactive and cell-laden 3D structures aimed to boost knowledge related to osteogenesis, sarcomagenesis, hematopoietic malignancies, and bone-tissue microenvironment. The output includes multiple successful bone and cartilage regenerative strategies, along with sarcoma and leukemia modelling approaches.

**Senentxu Lanceros-Mendez** is Ikerbasque Professor and Scientific Director at BCMaterials, Basque Center for Materials, Applications and Nanostructures, Leioa, Spain. He is Associate Professor at the Physics Department of the University of Minho, Portugal (on leave), where he also works in the Center of Physics. He graduated in physics at the University of the Basque Country, Leioa, Spain, and he obtained his Ph.D. degree at the Institute of Physics of the Julius-Maximilians-Universitat of ¨ Wurzburg, Gemany. His work is focused on the area of smart and multifunctional materials for ¨ sensors and actuators, energy, and biomedical applications. In terms of biomedical applications, his work is mostly devoted to the development of active microenvironments for tissue regeneration strategies, based on stimuli-responsive materials and scaffolds.
