Fig. 7

Multivariate statistical analysis of untargeted metabolomics in human myeloma cell lines (HMCLs). (A) It represents the difference between HMCLs and control group in PCA score plot. The red dot represents control group, the green dots represent HMCLs. (B) It represents the difference between HMCLs and control group in OPLS-DA score plot. The red dot represents control group; the green dots represent HMCLs. (C) The alteration of intracellular metabolites between HMCLs and control group. Red/blue names represent higher/lower intensity in HMCLs. (D) Kyoto Encyclopedia of Genes and Genomes (KEGG) metabolic pathways enriched by significantly differential metabolites in HMCLs versus control group