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Published in: BMC Cancer 1/2020

Open Access 01-12-2020 | osteosarcoma | Research article

Comprehensive analysis of prognostic tumor microenvironment-related genes in osteosarcoma patients

Authors: Chuan Hu, Chuan Liu, Shaoqi Tian, Yuanhe Wang, Rui Shen, Huili Rao, Jianyi Li, Xu Yang, Bo Chen, Lin Ye

Published in: BMC Cancer | Issue 1/2020

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Abstract

Background

Tumor microenvironment (TME) plays an important role in malignant tumors. Our study aimed to investigate the effect of the TME and related genes in osteosarcoma patients.

Methods

Gene expression profiles and clinical data of osteosarcoma patients were downloaded from the TARGET dataset. ESTIMATE algorithm was used to quantify the immune score. Then, the association between immune score and prognosis was studied. Afterward, a differential analysis was performed based on the high- and low-immune scores to determine TME-related genes. Additionally, Cox analyses were performed to construct two prognostic signatures for overall survival (OS) and disease-free survival (DFS), respectively. Two datasets obtained from the GEO database were used to validate signatures.

Results

Eighty-five patients were included in our research. The survival analysis indicated that patients with higher immune score have a favorable OS and DFS. Moreover, 769 genes were determined as TME-related genes. The unsupervised clustering analysis revealed two clusters were significantly related to immune score and T cells CD4 memory fraction. In addition, two signatures were generated based on three and two TME-related genes, respectively. Both two signatures can significantly divide patients into low- and high-risk groups and were validated in two GEO datasets. Afterward, the risk score and metastatic status were identified as independent prognostic factors for both OS and DFS and two nomograms were generated. The C-indexes of OS nomogram and DFS nomogram were 0.791 and 0.711, respectively.

Conclusion

TME was associated with the prognosis of osteosarcoma patients. Prognostic models based on TME-related genes can effectively predict OS and DFS of osteosarcoma patients.
Appendix
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Metadata
Title
Comprehensive analysis of prognostic tumor microenvironment-related genes in osteosarcoma patients
Authors
Chuan Hu
Chuan Liu
Shaoqi Tian
Yuanhe Wang
Rui Shen
Huili Rao
Jianyi Li
Xu Yang
Bo Chen
Lin Ye
Publication date
01-12-2020
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2020
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/s12885-020-07216-2

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