Derived growth factor cadherin and usage.

Peptide designated Cadherin-derived growth factor (CDGF), characterized in that it is a peptide that is cleaved as prosequence during processing of pro-cadherin into cadherin or a fragment thereof and wherein the peptide or fragment has an effect of cell proliferation on primary osteoblasts calvariae rat, and / or cellular protection and / or cell differentiation on nerve cell cultures primary ganglia dorsal radicle of chicken embryos, and that has one of the cadherin sequences human -1 (28-154): Cadherin-2 human (24-159): Cadherin-3 human (27-107): Cadherin-4 human (21-169): Cadherin-5 human (26-47): Cadherin human -6 (19-53): cadherin-6 human (19-51): cadherin-8 human: Precursor cadherin-B human (cadherin-11) (23-53): Precursor brain cadherin-cadherin-human C (cadherin-12) (24-54): Precursor brain cadherin-cadherin-C human (cadherin-12) (24-52): Cadhe rina-D human (Cadherin 13) (23-138): Cadherin-F human (Cadherin 14) (22-60):