The present invention relates to a supermatrix of synthetic niches comprising at least two matrices of niches wherein each matrix comprises n×m niches and wherein the distance (d) between a matrix and the other is greater than zero and wherein in each matrix every synthetic niche has one or more walls in common with the others synthetic niches of the matrix.A support for the culture of cells that includes at least one supermatrix and the use of said supermatrix or support for the in vitro culture of cells, in particular stem cells, or for the in vivo implant in a subject in order to promote tissue or organ regeneration through cell repopulation are also within the scope of the present invention.
