RUNX2 and posterior cortical atrophy: Functional assays uncovered that NEAT1 shuttled by PCa‐exosomes facilitated the activity of alkaline phosphatase (ALP) and mineralization of extracellular matrix, and continuously upregulated the levels of RUNX2, ALP, alpha‐1 type 1 collagen, and osteocalcin by regulating RUNX2, to induce the osteogenic differentiation of hBMSCs.