You're not going to find a program specializing in this; at most I would expect you might find several faculty members working in related areas. Tissue engineering is pretty broad and could encompass a lot of different methodologies and types of projects; do you have an idea of where in that spectrum you'd like to work? Off the top of my head I can think of some big names in the field, but I think it would help if you could relate more about how your interest in this came to be.