TNFAIP6 and bronchopulmonary dysplasia: We demonstrate that the increased expression of IL-6 and other proinflammatory cytokines, such as TNF-α and IL-6, in BPD groups were significantly attenuated on treatment with MSC-CM EXO 25 and TSG-6 (Fig. 7c-e) as shown by real-time PCR.