1.New advances in the application of oncolytic virus for the treatment of glioma
Clinical Medicine of China 2017;33(6):557-560
Glioma is the most common primary malignant tumor in the brain.Although through standardized treatment,including the largest range of surgical resection and subsequent radiotherapy and chemotherapy,the morbidity and mortality is still high,so we need a new treatment.The oncolytic virus antitumor concept was mentioned in the early 20th century,which is a kind of antitumor virus,people found that cancer patients infected with certain viruses,the tumor was gradually disappeared.With the development of Molecular Biology,Immunology,Virology and Genetic Engineering,oncolytic virus becomes a new method of tumors treatment,which attracts more and more researchers' attention,so we made an overview in the antitumor principle of oncolytic virus and its clinical application in the treatment of glioma.
2.Mutant IDH1 Enhances Temozolomide Sensitivity via Regulation of the ATM/CHK2 Pathway in Glioma
Lin LIN ; Jinquan CAI ; Zixiao TAN ; Xiangqi MENG ; Ruiyan LI ; Yang LI ; Chuanlu JIANG
Cancer Research and Treatment 2021;53(2):367-377
Purpose:
Isocitrate dehydrogenase 1 (IDH1) mutations are the most common genetic abnormalities in low-grade gliomas and secondary glioblastomas. Glioma patients with these mutations had better clinical outcomes. However, the effect of IDH1 mutation on drug sensitivity is still under debate.
Materials and Methods:
IDH1-R132H mutant cells were established by lentivirus. IDH1-R132H protein expression was confirmed by western blot. The expression of ataxia telangiectasia mutated (ATM) signaling pathway and apoptosis-related proteins were detected by immunofluorescence and western blot. Temozolomide (TMZ) induced cell apoptosis was detected by flow cytometry. Tumor cell proliferation was detected by Cell Counting Kit-8. In vivo nude mice were used to confirm the in vitro roles of IDH1 mutation.
Results:
We established glioma cell lines that expressed IDH1-R132H mutation stably. We found that TMZ inhibited glioma cells proliferation more significantly in IDH1 mutant cells compared to wild type. The IC50 of TMZ in IDH1-R132H mutant group was less than half that of wild-type group (p < 0.01). TMZ significantly induced more DNA damage (quantification of γH2AX expression in IDH1 mutation vs. wild type, p < 0.05) and apoptosis (quantification of AnnexinV+propidium iodide–cells in IDH1 mutation versus wild type, p < 0.01) in IDH1 mutant gliomas compared to wild-type gliomas. The ATM-associated DNA repair signal was impaired in IDH1 mutant cells. Inhibiting the ATM/checkpoint kinase 2DNA repair pathway further sensitized IDH1 mutant glioma cells to chemotherapy. We found that IDH1 mutation significantly inhibited tumor growth in vivo (the tumor size was analyzed statistically, p < 0.05). Moreover, we confirmed that gliomas with IDH1 mutation were more sensitive to TMZ in vivo compared to wild type significantly and the results were consistent with the in vitro experiment.
Conclusion
These results provide evidence that combination of TMZ and ATM inhibitor enhances the antitumor effect in IDH1 mutant gliomas.
3.Mutant IDH1 Enhances Temozolomide Sensitivity via Regulation of the ATM/CHK2 Pathway in Glioma
Lin LIN ; Jinquan CAI ; Zixiao TAN ; Xiangqi MENG ; Ruiyan LI ; Yang LI ; Chuanlu JIANG
Cancer Research and Treatment 2021;53(2):367-377
Purpose:
Isocitrate dehydrogenase 1 (IDH1) mutations are the most common genetic abnormalities in low-grade gliomas and secondary glioblastomas. Glioma patients with these mutations had better clinical outcomes. However, the effect of IDH1 mutation on drug sensitivity is still under debate.
Materials and Methods:
IDH1-R132H mutant cells were established by lentivirus. IDH1-R132H protein expression was confirmed by western blot. The expression of ataxia telangiectasia mutated (ATM) signaling pathway and apoptosis-related proteins were detected by immunofluorescence and western blot. Temozolomide (TMZ) induced cell apoptosis was detected by flow cytometry. Tumor cell proliferation was detected by Cell Counting Kit-8. In vivo nude mice were used to confirm the in vitro roles of IDH1 mutation.
Results:
We established glioma cell lines that expressed IDH1-R132H mutation stably. We found that TMZ inhibited glioma cells proliferation more significantly in IDH1 mutant cells compared to wild type. The IC50 of TMZ in IDH1-R132H mutant group was less than half that of wild-type group (p < 0.01). TMZ significantly induced more DNA damage (quantification of γH2AX expression in IDH1 mutation vs. wild type, p < 0.05) and apoptosis (quantification of AnnexinV+propidium iodide–cells in IDH1 mutation versus wild type, p < 0.01) in IDH1 mutant gliomas compared to wild-type gliomas. The ATM-associated DNA repair signal was impaired in IDH1 mutant cells. Inhibiting the ATM/checkpoint kinase 2DNA repair pathway further sensitized IDH1 mutant glioma cells to chemotherapy. We found that IDH1 mutation significantly inhibited tumor growth in vivo (the tumor size was analyzed statistically, p < 0.05). Moreover, we confirmed that gliomas with IDH1 mutation were more sensitive to TMZ in vivo compared to wild type significantly and the results were consistent with the in vitro experiment.
Conclusion
These results provide evidence that combination of TMZ and ATM inhibitor enhances the antitumor effect in IDH1 mutant gliomas.
4.Practice and reflection of glioma subspecialist training in Neurosurgery
Jinquan CAI ; Chunbin DUAN ; Tengfei QI ; Chuanlu JIANG
Chinese Journal of Medical Education Research 2023;22(2):268-271
The standardized training system for physicians has been implemented for many years in China. Based on the current situation of neurosurgery specialist training and the sub-professional development, the study discusses the specific plan and direction of glioma sub-professional physicians training from the aspects of glioma sub-professional physicians training outline, training content, requirements of glioma sub-professional training base, training assessment methods and training management. It provided reference for the training of neurosurgical glioma professionals in China, so as to make glioma receive comprehensive and standardized treatment.
5.Guideline for the diagnosis and treatment of chronic refractory wounds in orthopedic trauma patients (version 2023)
Yuan XIONG ; Bobin MI ; Chenchen YAN ; Hui LI ; Wu ZHOU ; Yun SUN ; Tian XIA ; Faqi CAO ; Zhiyong HOU ; Tengbo YU ; Aixi YU ; Meng ZHAO ; Zhao XIE ; Jinmin ZHAO ; Xinbao WU ; Xieyuan JIANG ; Bin YU ; Dianying ZHANG ; Dankai WU ; Guangyao LIU ; Guodong LIU ; Qikai HUA ; Mengfei LIU ; Yiqiang HU ; Peng CHENG ; Hang XUE ; Li LU ; Xiangyu CHU ; Liangcong HU ; Lang CHEN ; Kangkang ZHA ; Chuanlu LIN ; Chengyan YU ; Ranyang TAO ; Ze LIN ; Xudong XIE ; Yanjiu HAN ; Xiaodong GUO ; Zhewei YE ; Qisheng ZHOU ; Yong LIU ; Junwen WANG ; Ping XIA ; Biao CHE ; Bing HU ; Chengjian HE ; Guanglin WANG ; Dongliang WANG ; Fengfei LIN ; Jiangdong NI ; Aiguo WANG ; Dehao FU ; Shiwu DONG ; Lin CHEN ; Xinzhong XU ; Jiacan SU ; Peifu TANG ; Baoguo JIANG ; Yingze ZHANG ; Xiaobing FU ; Guohui LIU
Chinese Journal of Trauma 2023;39(6):481-493
Chronic refractory wound (CRW) is one of the most challengeable issues in clinic due to complex pathogenesis, long course of disease and poor prognosis. Experts need to conduct systematic summary for the diagnosis and treatment of CRW due to complex pathogenesis and poor prognosis, and standard guidelines for the diagnosis and treatment of CRW should be created. The Guideline forthe diagnosis and treatment of chronic refractory wounds in orthopedic trauma patients ( version 2023) was created by the expert group organized by the Chinese Association of Orthopedic Surgeons, Chinese Orthopedic Association, Chinese Society of Traumatology, and Trauma Orthopedics and Multiple Traumatology Group of Emergency Resuscitation Committee of Chinese Medical Doctor Association after the clinical problems were chosen based on demand-driven principles and principles of evidence-based medicine. The guideline systematically elaborated CRW from aspects of the epidemiology, diagnosis, treatment, postoperative management, complication prevention and comorbidity management, and rehabilitation and health education, and 9 recommendations were finally proposed to provide a reliable clinical reference for the diagnosis and treatment of CRW.