NEAT1 and posterior cortical atrophy: Compared with RWPE‐1‐exosomes, both PCa‐exosomes significantly elevated NEAT1 expression levels in hBMSCs, especially in C4‐2B‐derived exosomes, and increase in NEAT1 expression was the most significant in C4‐2B‐ac‐derived exosomes (Figure 2E).