ACTA1 and esophageal squamous cell carcinoma: We found that the αSMA expression was strongly upregulated in NFs (a mixture of pairs 1, 2, and 3) or adipose‐derived MSCs after incubation with the CM from the control KYSE410, KYSE30, KYSE510, or primary ESCC cells, but not from NOX5‐depleted ESCC cells (Figures 3B, 3C, 4A, and 4B).