Abstract: Biocompatible tissue grafts are provided. The biocompatible tissue grafts include a bulk graft including a biocompatible material and having at least a first surface. The biocompatible tissue grafts also include a coating including a hydrogel and being immobilized on the bulk graft at the first surface. The biocompatible material includes at least one of a biologic material or a biologic-synthetic composite material. The hydrogel includes cross-linked hydroxyphenyl-substituted hyaluronan (HPS-HA), cross-linked hydroxyphenyl-substituted collagen (HPS-C), or both. The cross-linked HPS-HA, cross-linked HPS-C, or both have been formed by cross-linking of hydroxyphenyl groups of HPS-HA, HPS-C, or both to form dihydroxyphenyl bridges. Also disclosed are methods for repair of tissue damage in a subject in need thereof. The methods include surgically implanting the biocompatible tissue graft into a site of the tissue damage in the subject.

Abstract: Biocompatible tissue grafts are provided. The biocompatible tissue grafts comprise a bulk graft comprising a biocompatible material and having at least a first surface. The biocompatible tissue grafts also comprise a coating comprising a hydrogel and being immobilized on the bulk graft at the first surface. The biocompatible material comprises at least one of a biologic material or a biologic-synthetic composite material. The hydrogel comprises cross-linked hydroxyphenyl-substituted hyaluronan (HPS-HA), cross-linked hydroxyphenyl-substituted collagen (HPS-C), or both. The cross-linked HPS-HA, cross-linked HPS-C, or both have been formed by cross-linking of hydroxyphenyl groups of HPS-HA, HPS-C, or both to form dihydroxyphenyl bridges. Also disclosed are methods for repair of tissue damage in a subject in need thereof. The methods comprise surgically implanting the biocompatible tissue graft into a site of the tissue damage in the subject.

Abstract: A composition comprising a human- or animal-derived extracellular matrix and a macromolecular network which is prepared ex vivo is provided that is useful in the repair of a tissue injury, particularly in repair of tears or gaps between a tendon and a bone, such as in a rotator cuff tear. In an embodiment, the composition comprises a human- or animal-derived extracellular matrix having impregnated therein a macromolecular network of hyaluronan macromolecules that have been cross-linked via dihydroxyphenyl linkages, so that the cross-linked network is interlocked within the extracellular matrix. The resulting HA-incorporated extracellular matrix can be supplied in the form of a patch to reinforce a tissue repair or cover a tissue defect.

Abstract: A composition comprising a human- or animal-derived extracellular matrix and a macromolecular network which is prepared ex vivo is provided that is useful in the repair of a tissue injury, particularly in repair of tears or gaps between a tendon and a bone, such as in a rotator cuff tear. In an embodiment, the composition comprises a human- or animal-derived extracellular matrix having impregnated therein a macromolecular network of hyaluronan macromolecules that have been cross-linked via dihydroxyphenyl linkages, so that the cross-linked network is interlocked within the extracellular matrix. The resulting HA-incorporated extracellular matrix can be supplied in the form of a patch to reinforce a tissue repair or cover a tissue defect.