A novel ferroptosis-related gene signature for predicting prognosis in multiple myeloma

被引:11
作者
Gao, Dandan [1 ]
Liu, Rui [1 ]
Lv, Yang [1 ]
Feng, Yuandong [1 ]
Hong, Fei [1 ]
Xu, Xuezhu [1 ]
Hu, Jinsong [2 ]
He, Aili [1 ,3 ]
Yang, Yun [1 ]
机构
[1] Xi An Jiao Tong Univ, Dept Hematol, Affiliated Hosp 2, Xian, Peoples R China
[2] Xian Jiaotong Univ Hlth Sci Ctr, Dept Cell Biol & Genet, Xian, Peoples R China
[3] Xi An Jiao Tong Univ, Natl Local Joint Engn Res Ctr Biodiagnost & Biothe, Affiliated Hosp 2, Xian, Peoples R China
来源
FRONTIERS IN ONCOLOGY | 2023年 / 13卷
关键词
multiple myeloma; ferroptosis; risk signature; tumor immunity; drug sensitivity; INCREASED EXPRESSION; CELL-DEATH; CERULOPLASMIN; AKR1C3; TRANSFERRIN; CARCINOMA; RAT;
D O I
10.3389/fonc.2023.999688
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
BackgroundMultiple myeloma (MM) is a highly malignant hematological tumor with a poor overall survival (OS). Due to the high heterogeneity of MM, it is necessary to explore novel markers for the prognosis prediction for MM patients. Ferroptosis is a form of regulated cell death, playing a critical role in tumorigenesis and cancer progression. However, the predictive role of ferroptosis-related genes (FRGs) in MM prognosis remains unknown. MethodsThis study collected 107 FRGs previously reported and utilized the least absolute shrinkage and selection operator (LASSO) cox regression model to construct a multi-genes risk signature model upon FRGs. The ESTIMATE algorithm and immune-related single-sample gene set enrichment analysis (ssGSEA) were carried out to evaluate immune infiltration level. Drug sensitivity was assessed based on the Genomics of Drug Sensitivity in Cancer database (GDSC). Then the synergy effect was determined with Cell counting kit-8 (CCK-8) assay and SynergyFinder software. ResultsA 6-gene prognostic risk signature model was constructed, and MM patients were divided into high and low risk groups. Kaplan-Meier survival curves showed that patients in the high risk group had significantly reduced OS compared with patients in the low risk group. Besides, the risk score was an independent predictor for OS. Receiver operating characteristic (ROC) curve analysis confirmed the predictive capacity of the risk signature. Combination of risk score and ISS stage had better prediction performance. Enrichment analysis revealed immune response, MYC, mTOR, proteasome and oxidative phosphorylation were enriched in high risk MM patients. We found high risk MM patients had lower immune scores and immune infiltration levels. Moreover, further analysis found that MM patients in high risk group were sensitive to bortezomib and lenalidomide. At last, the results of the in vitro experiment showed that ferroptosis inducers (RSL3 and ML162) may synergistically enhance the cytotoxicity of bortezomib and lenalidomide against MM cell line RPMI-8226. ConclusionThis study provides novel insights into roles of ferroptosis in MM prognosis prediction, immune levels and drug sensitivity, which complements and improves current grading systems.
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页数:14
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