1.Complete video-assisted thoracoscopes lobectomy for patients with non-small cell lung cancer
Jun GUAN ; Jianxin XU ; Jiansheng LIN ; Lihui WU ; Xinyang ZHENG ; Haizhan SHI ; Xinchun CHEN
Chinese Journal of Postgraduates of Medicine 2013;(14):19-21
Objective To summarize preliminary experiences on complete video-assisted thoracoscopes lobectomy for patients with non-small cell lung cancer.Methods From October 2009 to March 2012,42 patients with non-small cell lung cancer were treated with complete video-assisted thoracoscopes lobectomy.Tumors located in the left upper lobectomy in 7 cases,10 cases of left lower lobectomy,9 cases of upper right lung,4 cases of right lung,12 cases of lower right lobectomy.Preoperative cTNM stage was Ⅰ-Ⅱ (T1N0M0-T2N1M0),the size of tumor was < 5 cm,no obvious lung and mediastinal lymph node enlargement or pleura hypertrophy.Results All operations were successful.There were (9.5 ± 3.2) pieces of lymph nodes removed.Nz lymph node cleaning was more than 3 groups,the average was 3.3 groups.The operation time was 100-400 (220 ± 37) min,blood loss was 120-700 (150 ± 63) ml,duration of drainage was 3-12(4.5 ± 2.1) d.The postoperative hospital stay was 9-31 (12.2 ± 5.0) d.Conclusion Video-assisted thoracoscopes lobectomy is technically feasible and safe,but the operation indications should be paid special attention.
2.Bioinformatics analysis of HLA-A2 restricted neoantigen epitopes in breast cancer
YOU Zicong ; ZHON Weijun ; LUO Yunfeng ; DENG Jianwen ; ZHANG Pusheng ; FENG Haizhan ; WENG Junyan ; YU Jinlong ; ZHU Huijuan ; LI Yuhuab ; SHI Fujuna
Chinese Journal of Cancer Biotherapy 2020;27(4):427-432
[Abstract] Objective: To screen candidate epitopes of breast cancer HLA-A2 restrictive neoantigen and to identify high frequency mutation sites in breast cancer neoantigen by using bioinformatics method. Methods: NCBI and GDC databases were used to search missense mutation sites formed by single nucleotide mutation in breast cancer among reported literatures and sequencing data. The new antigen epitopes were predicted by HLA-A2 antigen epitope prediction website BIMAS, SYFPEITHI and artificial neural networkbased NetMHC4.0, and the epitopes with TAP binding power less than Intermediate were eliminated. The candidate epitopes were prioritized by mutation frequency and prediction results. Results: A total of 17 high-frequency mutation genes, including BTLA, ERBB2 and NBPF12 etc, were screened by the above-mentioned methods, and a total of 26 neoantigen epitopes were identified. The binding power of epitopes predicted using BIMAS and SYFPEITHI showed great difference (P<0.05), epitopes in high priority as GSTP1 (A114V , mutation frequency of 5.94%) and BRCA2 (N991H, mutation frequency of 5.40%) etc, were expected to be candidate neo-antigen epitopes; however, their mutation frequency was relatively too low to achieve“universal use” . The possibility of these epitopes used as general breast cancer neo-antigen epitopes is less likely. Conclusion: The common mutation frequency of breast cancer is lower than that of other tumors; it ’s difficult to find“universal”new antigen epitopes of breast cancer; the individualized neoantigen vaccine may be of more promise, which needs further research.