TNF and viral infectious disease: The KEGG analysis results also indicated that SDF-1-induced DEGs were mainly enriched in the glucagon signaling pathway, NF-kappa B signaling pathway, and TNF signaling pathway (Fig. 2B and Table S1), and mostly involved in human diseases and organismal systems, such as viral infectious diseases, the immune system, and the endocrine system (Fig. S2B and Table S1).