Aim:Disulfidptosis is a new metabolic-related regulated cell death associated with
cancer growth. This study aimed to investigate the molecular mechanisms associated with disulfidptosis in skin cutaneous melanoma (SKCM) and establish a disulfidptosis-related gene signature for prognostic prediction in SKCM.Methods:Disulfidptosis-associated genes were identified from RNA-seq data of SKCM. A risk
score signature was developed and validated through univariate Cox and LASSO analyses. Additionally, the immune microenvironment related to the risk score signature was investigated.
Finally, a disulfidptosis-related genes-transcription factor -miRNA network was developed, and
the expression levels of five disulfidptosis-related genes were initially verified in SKCM cell
lines.Results:A total of 107 disulfidptosis-related differentially expressed genes in SKCM samples
were identified. A ten-disulfidptosis-gene signature was established, including BIN2, CCL3L3,
CCL8, CD79A, CIITA, CXCR3, DEFB1, GPR171, IL2RB, and SOCS1. The SKCM samples
were divided into high- and low-risk groups, of which samples in the low-risk group showed
better survival performance. The receiver operating characteristic curve analysis confirmed the
good potency of the disulfidptosis-related gene prognostic model. Except for DEFB1, the other
nine genes were positively related with T cell CD8+, T cell CD4+ memory activated, T cell
gamma delta, NK cell activated, and macrophage M1, and they were all negatively related with
NK cell resting, macrophage M0, macrophage M2, and mast cell activated. Finally, we verified
downregulated levels of SOCS1 and DEFB1 and upregulated CXCR3, BIN2, and CCL3L3 in
A875 and A375.Conclusion:We successfully established ten disulfidptosis-related genes' prediction prognostic
signatures for SKCM patients.