PIM1 and nasopharyngeal carcinoma: Furthermore, EBV-negative NPC cells can induce the EMT potential through the uptake of exo-LMP1.107 The NF-κB inhibitor aspirin can reverse EMT, reduce the release of exo-LMP1, promote the expression of miR-203, and inhibit the metastasis of NPC cells in nude mice.108 Provirus integration site for Moloney murine leukemia virus 1 (Pim1) is a serine/threonine kinase.