AIM: To investigate the expression of receptor-binding cancer antigen expressed on SiSo cells (RCAS1) in metastatic lymph nodes from gastrointestinal cancer.METHODS: Metastatic lymph nodes from gastrointestinal cancer were detected for RCAS1 by immunohistochemical staining and mRNA in situ hybridization.RESULTS: A total of 102 metastatic lymph nodes from bile duct, gastric, colon, and pancreatic cancer were investigated for RCAS1 expression. The immunoreactivity of RCAS1 was identified in 100% of metastatic lymph nodes. Both local and distant metastatic lymph nodes showed RCAS1 expression. On the contrary, specimens of non-cancerous lymph nodes were negative for RCAS1.The result of mRNA in situ hybridization was also confirmed by the finding of immunohistochemical staining. RCAS1 mRNA was detected in all tumor cells that metastasized to lymph nodes.CONCLUSION: All metastatic lymph nodes express RCAS1 in tumor cells at both protein and mRNA levels,and RCAS1 should be used as a complementary factor for identification of metastatic lymph nodes from gastrointestinal cancers.
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机译:Suspicious Cervical Lymph Nodes Detected after Thyroidectomy for Papillary Thyroid Cancer Usually Remain Stable Over Years in Properly Selected Patients
机译:Retraction statement: ‘Formin‐like2 regulates Rho/ROCK pathway to promote actin assembly and cell invasion of colorectal cancer’ by Yuanfeng Zeng Huijun Xie Yudan Qiao Jianmei Wang Xiling Zhu Guoyang He Yuling Li Xiaoli Ren Feifei Wang Li Liang and Yanqing Ding
机译:Suspicious Cervical Lymph Nodes Detected after Thyroidectomy for Papillary Thyroid Cancer Usually Remain Stable Over Years in Properly Selected Patients