Abstract
Oncofetal reprogramming of the tumor microenvironment is clinically relevant. This study used the non-negative matrix factorial (NMF) algorithm for single-cell RNA sequencing data of gastric cancer (GC) based on embryonic stem genes. Pseudotime analysis, cell–cell interaction analysis, and SCENIC analysis revealed that cancer-associated fibroblasts (CAFs), tumor-associated endothelial cells (TECs), and tumor-associated macrophages (TAMs) have different oncofetal reprogramming that affects cell function, enhances intercellular communication, and activates multiple transcription factors in these cells. Furthermore, based on the signatures of the newly defined oncofetal cell subtypes and expression profiles of large cohorts in GC patients, we determined that GJA1 + TEC-C2, IFITM1 + CAF-C3, PODXL + TEC-C1, SFRP2 + CAF-C2, and SRSF7 + CAF-C1 are crucial prognostic factors for GC patients and predictors of immune checkpoint blockade in GC. Cell subtypes were validated by immunohistochemical methods. Our novel, profound, and systematic analysis of the oncofetal reprogramming of GC may facilitate the development of improved drugs for treating GC.
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Data availability
The datasets generated for this study can be found in the GEO database (https://www.ncbi.nlm.nih.gov/geo/) and Xena GDC TCGA (https://xenabrowser.net/datapages/). IHC images can be publicly downloaded from The Human Protein Atlas (HPA) database (https://www.proteinatlas.org).
Code availability
R and other custom scripts for analyzing data are available upon request.
Change history
16 February 2023
A Correction to this paper has been published: https://doi.org/10.1007/s13577-023-00879-6
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Acknowledgements
We appreciate all our team members at Bioinfo_composer, the leading bioinformatics platform in China, for their selfless help.
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This work was supported by JSPS KAKENHI Grant Number JP22K20814.
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SCM and WCG analyzed the data and presented the results. WCG designed the research. XS wrote the introduction and discussion of the manuscript. YLW modified the manuscript to the submission format and made a flowchart. YPL and ZCY assisted with the literature search. TS and TN provided suggestions on data analysis. WCG and TN obtained the grant.
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Mo, S., Shen, X., Wang, Y. et al. Systematic single-cell dissecting reveals heterogeneous oncofetal reprogramming in the tumor microenvironment of gastric cancer. Human Cell 36, 689–701 (2023). https://doi.org/10.1007/s13577-023-00856-z
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DOI: https://doi.org/10.1007/s13577-023-00856-z