LINC01614 and cancer: Interestingly, A549 cells failed to upregulate LINC01614 expression in CAFs when silencing LINC01614 or inhibiting CAF exosome secretion (Additional file 2: Fig. S7B), suggesting the transmission of LINC01614 from CAFs to cancer cells may form regulatory positive feedforward loops for LINC01614 upregulation in CAFs.