Journal: Scientific Reports
Article Title: Uracil as a biomarker for spatial pyrimidine metabolism in the development of gingivobuccal oral squamous cell carcinoma
doi: 10.1038/s41598-024-62434-z
Figure Lengend Snippet: Expression patterns of CD39, CD73, and P2Y6 receptor. ( A , B ) CD39 was significantly upregulated in the TME. Neither the tumor cells nor the normal epithelium was CD39 + according to IHC. ( C ) RNA-Seq data demonstrated significant upregulation of the CD39-encoding gene, ENTPD1 , in tumors ( P = 6e -4 ; n = 46). ( D ) IHC scoring confirmed CD39 enrichment in node-positive cases ( P = 3.9e -6 ; n = 23). ( E ) IHC studies demonstrated CD73 over expression in the tumor stroma, while CD73 was not expressed in the tumor region. ( F ) RNA-Seq data showing expression of the gene encoding CD73, NT5E , solely in the stroma ( P = 3.5e -6 ; n = 46). ( G ) CD73 score did not differ significantly according to the node status (n = 23). ( H ) The GPCR membrane protein, P2Y6 receptor was widely distributed within the stroma and was prominent in the invasive tumor margins, whereas distant tumor cells were P2Y6 receptor-negative. ( I ) TheP2Y6 receptor gene, P2RY6, was upregulated in tumor samples ( P = 1.05e -13 ; n = 46). ( J ) A proportional increase in P2Y6 receptor protein was observed in node-positive cases ( P = 0.05; n = 23). ( K ) ( a ) P2Y6 receptor was expressed at higher levels in immune cells compared with tumor cells. ( b ) Immune cells from node-positive cases showed higher P2Y6 receptor expression than node-negative immune cells. ( c ) In node-negative cases, P2Y6 receptor was more widely distributed in immune cells, but more widely distributed in tumor cells in node positive-cases.
Article Snippet: The selected markers were detected using the following antibodies: CD39 (Abcam Cat. No. ab223842, clone EPR20627; rabbit monoclonal; 1:500 dilution; control—human colon carcinoma), CD73 (Abcam Cat. No. ab133582, clone EPR6114; rabbit monoclonal; 1:100 dilution; control—human tonsil tissue), P2Y6 receptor (Abcam Cat. No. ab92504, clone EPR3816; rabbit monoclonal; 1:200 dilution; control– human tonsil tissue), ENTPD4 (Sigma-Aldrich Cat. No. HPA017655, rabbit polyclonal; 1:100 dilution; control—human kidney tissue) and ENTPD5 (Abcam Cat. No. ab108603, clone: EPR3784; rabbit monoclonal; 1:50 dilution; control—human kidney tissue).
Techniques: Expressing, RNA Sequencing Assay, Over Expression, Membrane