PMID- 38019470 OWN - NLM STAT- MEDLINE DCOM- 20231207 LR - 20231217 IS - 1945-4589 (Electronic) IS - 1945-4589 (Linking) VI - 15 IP - 22 DP - 2023 Nov 27 TI - Immune microenvironment heterogeneity reveals distinct subtypes in neuroblastoma: insights into prognosis and therapeutic targets. PG - 13345-13367 LID - 10.18632/aging.205246 [doi] AB - BACKGROUND: Neuroblastoma (NB) is a childhood cancer originating from immature nerve cells in the sympathetic nervous system. Current clinical and molecular subtyping methods for NB have limitations in providing accurate prognostic information and guiding treatment decisions. RESULTS: To overcome these challenges, we explored the microenvironment of NB based on the knowledge-based functional gene expression signatures (Fges), which revealed heterogeneous subtypes. Consensus clustering of Fges activity scores identified three subtypes (Cluster 1, Cluster 2, and Cluster 3) that demonstrated significant differences in prognosis compared to mainstream subtypes. We assessed the immune infiltration, immunogenicity, CD8T cytotoxicity, and tumor purity of these subtypes, uncovering their distinct biological functions. Cluster 1 and Cluster 2 exhibited higher immunoreactivity, while Cluster 3 displayed higher tumor purity and poor prognosis. Gene ontology annotation and pathway analysis identified immune activation in Cluster 1, epithelial-mesenchymal transition (EMT) in Cluster 2, and cell cycle processes in Cluster 3. Notably, the impact of EMT activity on prognosis may vary across NB subtypes. A classification model using XGBoost accurately predicted subtypes in independent NB cohorts, with significant prognostic differences. GPR125, CDK4, and GREB1 emerged as potential therapeutic targets in Cluster 3. CD4K inhibitors showed subtype-specific responses, suggesting tailored treatment strategies. Single-cell analysis highlighted unfavorable clinical features in Cluster 3, including high-risk classification and reduced cytotoxicity. Suppressed interactions between monocytes, macrophages, and regulatory T cells were observed, affecting immune regulation and patient prognosis. CONCLUSION: To summarize, we have identified a new independent prognostic factor in NB that underscores the significant correlation between tumor phenotype and immune contexture. These findings deepen our understanding of NB subtypes and immune cell interactions, paving the way for more effective treatment approaches. FAU - Yang, Yanlan AU - Yang Y AD - Department of Hematology and Oncology, Shenzhen Children’s Hospital, Shenzhen, Guangdong, PR China. FAU - Li, Huamei AU - Li H AD - Department of Hepatobiliary Surgery, The Affiliated Drum Tower Hospital, Medical School, Nanjing University, Nanjing 210008, PR China. FAU - Zheng, Donghui AU - Zheng D AD - Department of Hematology and Oncology, Shenzhen Children’s Hospital, Shenzhen, Guangdong, PR China. FAU - Li, Xuemei AU - Li X AD - Department of Hematology and Oncology, Shenzhen Children’s Hospital, Shenzhen, Guangdong, PR China. FAU - Liu, Hongyan AU - Liu H AD - Department of Hematology and Oncology, Shenzhen Children’s Hospital, Shenzhen, Guangdong, PR China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20231127 PL - United States TA - Aging (Albany NY) JT - Aging JID - 101508617 SB - IM MH - Humans MH - Child MH - Prognosis MH - *Neuroblastoma/metabolism MH - Treatment Outcome MH - Epithelial-Mesenchymal Transition MH - Transcriptome MH - Tumor Microenvironment/genetics PMC - PMC10713432 OTO - NOTNLM OT - drug response OT - neuroblastoma OT - prognosis OT - subtypes OT - tumor microenvironment COIS- CONFLICTS OF INTEREST: The authors declare no conflicts of interest related to this study. EDAT- 2023/11/29 12:42 MHDA- 2023/12/07 12:42 PMCR- 2023/11/30 CRDT- 2023/11/29 11:13 PHST- 2023/07/11 00:00 [received] PHST- 2023/10/23 00:00 [accepted] PHST- 2023/12/07 12:42 [medline] PHST- 2023/11/29 12:42 [pubmed] PHST- 2023/11/29 11:13 [entrez] PHST- 2023/11/30 00:00 [pmc-release] AID - 205246 [pii] AID - 10.18632/aging.205246 [doi] PST - ppublish SO - Aging (Albany NY). 2023 Nov 27;15(22):13345-13367. doi: 10.18632/aging.205246. Epub 2023 Nov 27.