PMID- 35127816 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220208 IS - 2296-889X (Print) IS - 2296-889X (Electronic) IS - 2296-889X (Linking) VI - 8 DP - 2021 TI - Development of Personalized Signature Based on the Immune Landscape to Predict the Prognosis of Osteosarcoma and the Response to Immunotherapy and Targeted Therapy. PG - 783915 LID - 10.3389/fmolb.2021.783915 [doi] LID - 783915 AB - As a heterogeneous and aggressive disease, osteosarcoma (OS) faces great challenges to prognosis and individualized treatment. Hence, we explore the role of immune-related genes in predicting prognosis and responsiveness to immunotherapy and targeted therapies in patients with OS based on the immunological landscape of osteosarcoma. Based on the database of the Therapeutical Applicable Research to Generate Effective Treatments (TARGET), single-sample gene set enrichment analysis (ssGSEA) was used to obtain the enrichment scores of 29 immune characteristics. A series of bioinformatics methods were performed to construct the immune-related prognostic signature (IRPS). Gene set enrichment analysis and gene set variation analysis were used to explore the biological functions of IRPS. We also analyzed the relationship between IRPS and tumor microenvironment. Lastly, the reactivity of IRPS to immune checkpoint therapy and targeted drugs was explored. The ssGSEA algorithm was used to define two immune subtypes, namely Immunity_High and Immunity_Low. Immunity_High was associated with a good prognosis and was an independent prognostic factor of OS. The IRPS containing 7 genes was constructed by the least absolute shrinkage and selection operator Cox regression. The IRPS can divide patients into low- and high-risk patients. Compared with high-risk patients, low-risk patients had a better prognosis and were positively correlated with immune cell infiltration and immune function. Low-risk patients benefited more from immunotherapy, and the sensitivity of targeted drugs in high- and low-risk groups was determined. IRPS can be used to predict the prognosis of OS patients, and provide therapeutic responsiveness to immunotherapy and targeted therapy. CI - Copyright (c) 2022 Feng, Zhao, Zhao, Song, Ma and Wang. FAU - Feng, Xiaofei AU - Feng X AD - Department of Orthopedics, The First Clinical Medical College of Lanzhou University, Gansu, China. FAU - Zhao, Zhenrui AU - Zhao Z AD - Department of Orthopedics, The First Clinical Medical College of Lanzhou University, Gansu, China. FAU - Zhao, Yuhao AU - Zhao Y AD - Department of Orthopedics, The First Clinical Medical College of Lanzhou University, Gansu, China. FAU - Song, Zhengdong AU - Song Z AD - Department of Orthopedics, The First Clinical Medical College of Lanzhou University, Gansu, China. FAU - Ma, Yao AU - Ma Y AD - Clinical Laboratory Center, Gansu Provincial Maternity and Child-Care Hospital, Gansu, China. FAU - Wang, Wenji AU - Wang W AD - Department of Orthopedics, Lanzhou University First Affiliated Hospital, Gansu, China. LA - eng PT - Journal Article DEP - 20220120 PL - Switzerland TA - Front Mol Biosci JT - Frontiers in molecular biosciences JID - 101653173 PMC - PMC8811188 OTO - NOTNLM OT - immune checkpoint OT - osteosarcoma OT - prognosis OT - targeted therapy OT - tumor microenvironment COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/02/08 06:00 MHDA- 2022/02/08 06:01 PMCR- 2021/01/01 CRDT- 2022/02/07 05:35 PHST- 2021/09/27 00:00 [received] PHST- 2021/12/30 00:00 [accepted] PHST- 2022/02/07 05:35 [entrez] PHST- 2022/02/08 06:00 [pubmed] PHST- 2022/02/08 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - 783915 [pii] AID - 10.3389/fmolb.2021.783915 [doi] PST - epublish SO - Front Mol Biosci. 2022 Jan 20;8:783915. doi: 10.3389/fmolb.2021.783915. eCollection 2021.