Abstract: The present disclosure concerns methods and compositions for differentiating cells, including adipose cells, into chondrocyte-like cells via in vitro, ex vivo, and/or in vivo mechanical strain. In particular aspects, adipose cells or re-differentiated adipose cells that are chondrocyte-like cells, are delivered to a joint or are shaped into cartilage. In some embodiments, the adipose cells may be delivered to a joint, such as an intervertebral disc, following which the cells differentiate into chondrocyte-like cells to treat dysfunction of cartilage therein, including to repair degenerated discs, for example. In certain aspects, the cells prior to delivery to the individual are managed in the absence of growth factors, in vitro mechanical strain, and/or matrix molecules, for example.