Tissue-derived tissugenic implants, and methods of fabricating and using same

摘要

The disclosure provides implants containing a plurality of particles containing at least one population of viable tissuegenic cells adherent to and resident in the growth-conductive matrix or at least viable population of tissuegenic cells caused to be in contact with the growth-conductive matrix; methods to fabricate implants; methods of fabricating the implants; and use of the implants in tissue repair.

主权项

1. A method of fabricating a tissue-derived implant for implantation in a recipient allogeneic to a donor of the implant, the method comprising steps:
(a) isolating a tissue comprising at least one tissue-derived growth-conductive matrix from which measurable immunologically reactive hematopoietic cells have been removed, wherein the growth-conductive matrix comprises at least one viable population of nonexpanded tissuegenic cells endogenous to the growth conductive matrix of the donor that remain adherent to and resident in an endogenous milieu of the growth-conductive matrix; (b) separating the at least one tissue-derived growth-conductive matrix from the tissue of step (a) to generate a plurality of separated matrix pieces comprising the at least one viable population of nonexpanded tissuegenic cells endogenous to the growth conductive matrix of the donor that remain adherent to and resident in the endogenous milieu of the growth-conductive matrix, wherein the tissuegenic cells in the separated matrix pieces is of a relative frequency substantially similar to that found in the growth matrix of step (a); (c) rinsing the plurality of the separated matrix pieces of step (b) to form a plurality of rinsed separated matrix pieces comprising the at least one viable population of nonexpanded tissuegenic cells endogenous to the growth conductive matrix of the donor that remain adherent to and resident in the endogenous milieu of the growth-conductive matrix of step (b), wherein the tissuegenic cells in the rinsed separated matrix pieces of step (c) is of a relative frequency substantially similar to that found in the growth-conductive matrix of step (a), with the proviso that, before implantation, the implant is not reconstituted with cells exogenous to the tissue-derived growth conductive matrix of the donor; (d) collecting the plurality of the rinsed separated matrix pieces of step (c) comprising the at least one viable population of nonexpanded tissuegenic cells endogenous to the growth conductive matrix of the donor that remain adherent to and resident in the endogenous milieu of the growth-conductive matrix of step (c), wherein the at least one viable tissuegenic cell population in the collected rinsed separated matrix pieces is of a relative frequency substantially similar to that found in the growth-conductive matrix of step (a); and (e) packaging the plurality of the collected rinsed separated matrix pieces of step (d) comprising at least one viable population of nonexpanded tissuegenic cells endogenous to the growth conductive matrix of the donor that remain adherent to and resident in the endogenous milieu of the growth-conductive matrix, wherein the at least one viable tissuegenic cell population is of a relative frequency substantially similar to that found in the growth-conductive matrix of step (a), to form the implant.