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Cao, Xu; Yu, Song; Wang, Wei; Sun, Ruixiang; Wu, Zepan; Gao, Zhanfeng; Pang, Yue; Li, Qingwei
Biochemical and biophysical research communications, 07/2022, Volume: 614Journal Article
Previous studies have demonstrated that Neu5Gc is highly expressed in breast, ovarian, prostate, colon and lung cancers, but not in normal human cells. The presence of Neu5Gc is important for prognosis and is associated with aggressiveness, metastasis, and tumor grade. However, increased Neu5Gc in bladder cancer remains unclear. LIP from lamprey binds the carbohydrate receptor of N-glycolylneuraminic acid (Neu5Gc). The combination of Neu5Gc and LIP suggested that it might be used as a diagnostic tool for the detection of Neu5Gc tumor antigen. Here, the classical animal model of bladder cancer was successfully induced by MNU bladder perfusion. The ELISA results showed that the expression level of Neu5Gc in the urine of normal rats was 94.96 ± 21.01ng/mg, and that of bladder cancer rats was 158.28 ± 34.86 ng/mg. In addition, the results of SNA and LIP immunohistochemistry demonstrated the high expression of Neu5Gc in bladder cancer. After the addition of Neu5Gc to BIU-87 and SV-HUC-1 cells, transcriptomic sequencing and real-time quantitative PCR analysis demonstrated that the gene expression of Neu5Gc synthesis pathway was significantly increased. These data suggest that LIP provides a new tool for the detection of biological samples, especially urine from patients with bladder cancer or suspected cancer, and that revealing the mechanism of abnormal glycosylation can provide theoretical basis for clinical studies. Display omitted •LIP from lamprey can recognize the glycosylation of N- glycolylneuraminic acid (Neu5Gc), and might be used as a diagnostic tool for detecting the expression of Neu5Gc.•The expression of Neu5Gc in urine of rats with bladder cancer increased significantly.•The progression of bladder cancer is related to synthesis and glycosylation related genes of Neu5Gc.
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