The present invention relates to a porous matrix for tissue engineering comprising a first biodegradable and biocompatible polymer component forming a three-dimensional primary structure with primary pores, and further comprising a second biodegradable and biocompatible polymer component other than the first polymer component selected from the group consisting of collagens, laminin, fibronectin and mixtures thereof, wherein the second polymer component forms a three-dimensional secondary structure which is contained within the interior space of at least a part of the primary pores.