Left- Biological scaffolds made of extracellular matrices, Center - mound of ECM powder or pixie dust that regenerate finger tips, Right - pixie dust in a test tube
Stephen Badylak is a leading researcher on tissue regeneration. Here is a link to his publications.
It appears that they are having success with inducing the regeneration of muscle tissue using extracellular matrices and bioscaffolds and using recellularized tissue. They hope to regenerate whole limbs with biodome regenerative sleeve which will control the conditions around a wound to allow for regeneration.
Badylak was featured in a 60 minutes feature in late 2009 on growing body parts.
Badylak is featured in the July/August 2011 Discover Magazine for his work in regenerating the muscle tissue in the leg of marine Corporal Isaias Hernandez.
Researchers at the McGowan Institute hope to eventually be able to restore not only muscle but complete limbs as well. While these types of animal hormone based therapies remain controversial, it’s difficult to argue against saving life and limb.
Limb Regeneration research with a biodome regenerative sleeve
Whole-Organ Tissue Engineering: Decellularization and Recellularization of Three-Dimensional Matrix Scaffolds