MMP9 and Alzheimer disease: They found that compared to 2D‐cultured AD‐MSCs, spheroid‐cultured AD‐MSCs show higher expansion, less senescence, higher levels of pluripotency markers, C‐X‐C chemokine receptor type 4 (CXCR4) and angiogenic growth factors and enhanced migration and expression of MMP‐9 and MMP‐13.