Angiogenic and anti-inflammatory properties of micro-fragmented fat tissue and its derived mesenchymal stromal cells Valentina Ceserani1†, Anna Ferri1*†, Angiola Berenzi2, Anna Benetti2, Emilio Ciusani3, Luisa Pascucci4, Cinzia Bazzucchi4, Valentina Coccè5, Arianna Bonomi5, Augusto Pessina5, Erica Ghezzi6, Offer Zeira6, Piero Ceccarelli4, Silvia Versari7, Carlo Tremolada7 and Giulio Alessandri1 Background: Adipose-derived mesenchymal stromal cells (Ad-MSCs) are a promising tool for advanced cell-based therapies. They are routinely obtained enzymatically from fat lipoaspirate (LP) as SVF, and may undergo prolonged ex vivo expansion, with significant senescence and decline in multipotency. Besides, these techniques have complex regulatory issues, thus incurring in the compelling requirements of GMP guidelines. Hence, availability of a minimally manipulated, autologous adipose tissue would have remarkable biomedical and clinical relevance. For this reason, a new device, named Lipogems® (LG), has been developed. This ready-to-use adipose tissue cell derivate has been shown to have in vivo efficacy upon transplantation for ischemic and inflammatory diseases. To broaden our knowledge, we here investigated the angiogenic and anti-inflammatory properties of LG and its derived MSC (LG-MSCs) population.