1.Cloning,fusion expression and identification of thioredoxin encoding gene from Toxoplasma gondii
Zigang ZHANG ; Xiaomei CHEN ; Danhua SU ; Yuan LIU ; Tao FU ; Jiamiao DUANMU ; Liang WU ; Xugan JIANG ; Shengxia CHEN ; Jianping CAO
Chinese Journal of Schistosomiasis Control 2016;28(3):289-292
Objective To clone and express the thioredoxin(Trx)from RH strain tachyzoites of Toxoplasma gondii,estab?lish the prokaryotic expression vector and purify the recombinant protein,then produce the polyclonal anti?Trx antibody in rab?bits. Methods Trx fragment was amplified by PCR and cloned into the pET?28a(+)vector,and the recombinant protein was in?duced with IPTG and purified by Ni?NTA affinity chromatography. The polyclonal antibody specificity was detected by Western blotting. Results The trx gene was amplified from T. gondii cDNA by PCR. The recombinant plasmid trx/pET?28a(+)was use?fully constructed,and the recombinant TRX protein was expressed and purified. The TRX polyclonal antibody was also ob?tained. The specific band of TRX was detected by Western blotting. Conclusion Western blotting can detect the specificity of polyclonal anti?Trx antibody,which will facilitate the biological functions of Trx.
2.Tumor infiltrating T lymphocyte components in malignant pleural effusion of lung adenocarcinoma and their killing activities to autologous tumor cells.
Zhenkun XIA ; Jiamiao LIU ; Bei QING ; Wei WANG ; Mingjiu CHEN ; Yunchang YUAN
Journal of Central South University(Medical Sciences) 2019;44(10):1107-1112
To analyze the components of tumor infiltrating T lymphocyte (TIL) cells in malignant pleural effusion of lung adenocarcinoma, and evaluate their killing activities to autologous tumor cells.
Methods: Malignant pleural effusions were collected from 17 patients with lung adenocarcinoma. Mononuclear cells were isolated by Ficoll density gradient centrifugation and flow cytometer was used to analyze TIL cell components. TIL and tumor cells were separated through adherent culture. The tumor cells were identified via intramuscular injection of adherent cells into nude mice and the killing effect of cultured lymphocytes on autologous tumor cells was studied.
Results: Of the TIL in malignant pleural effusions, T cells accounted for 60.6%-79.3%, while T helper cells were significantly higher than T killer cells (36.63%±1.90% vs 24.64%±2.32%, P<0.001). There were also natural killer (NK) cells and NK T cells in the effusions. Tumor cells were successfully isolated and cultured. The killing activity of cultured TIL to autologous tumor cells was 39.14%±12.04%, and the killing activity of TIL with high proliferation rate to autologous tumor cells was higher than that of low proliferation group (50.51%±3.80% vs 29.04%±5.77%, P<0.001).
Conclusion: T lymphocytes are the major components of TIL in malignant pleural effusions derived from lung adenocarcinoma, and T helper cells are more than T killer cells. The killing activity of TIL with strong proliferation ability to autologous tumor cells is higher than that of TIL with weak proliferation ability. Therefore, cells from malignant pleural effusions could be used for cellular immunotherapy against tumor.
Adenocarcinoma of Lung
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Animals
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Cytotoxicity, Immunologic
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Humans
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Interleukin-2
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Lung Neoplasms
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Mice
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Mice, Nude
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Pleural Effusion, Malignant
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T-Lymphocytes
3.To Blame or Not? Modulating Third-Party Punishment with the Framing Effect.
Jiamiao YANG ; Ruolei GU ; Jie LIU ; Kexin DENG ; Xiaoxuan HUANG ; Yue-Jia LUO ; Fang CUI
Neuroscience Bulletin 2022;38(5):533-547
People as third-party observers, without direct self-interest, may punish norm violators to maintain social norms. However, third-party judgment and the follow-up punishment might be susceptible to the way we frame (i.e., verbally describe) a norm violation. We conducted a behavioral and a neuroimaging experiment to investigate the above phenomenon, which we call the "third-party framing effect". In these experiments, participants observed an anonymous perpetrator deciding whether to keep her/his economic benefit while exposing a victim to a risk of physical pain (described as "harming others" in one condition and "not helping others" in the other condition), then they had a chance to punish that perpetrator at their own cost. Our results showed that the participants were more willing to execute third-party punishment under the harm frame compared to the help frame, manifesting a framing effect. Self-reported anger toward perpetrators mediated the relationship between empathy toward victims and the framing effect. Meanwhile, activation of the insula mediated the relationship between mid-cingulate cortex activation and the framing effect; the functional connectivity between these regions significantly predicted the size of the framing effect. These findings shed light on the psychological and neural mechanisms of the third-party framing effect.
Empathy
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Female
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Gyrus Cinguli
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Humans
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Neuroimaging
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Pain
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Punishment/psychology*
4.Surgical treatment for hypertrophic obstructive cardiomyopathy associated with aortic stenosis
GONG Jiamiao ; RAN Jun ; SONG Yunhu ; LIU Yun ; TANG Yajie ; DENG Long ; LIU Xiaoxi
Chinese Journal of Clinical Thoracic and Cardiovascular Surgery 2019;26(12):1233-1238
Objective To evaluate the clinical and follow-up results of the surgical treatment for hypertrophic obstructive cardiomyopathy associated with aortic stenosis. Methods We retrospectively analyzed the clinical data of the patients with hypertrophic obstructive cardiomyopathy plus aortic stenosis in our hospital from February 2008 to October 2015. There were 4 males and 3 females aged 55.6 ± 7.5 years. All the patients were received concomitant aortic valvulopasty at the time of modified extended Morrow procedure. Echocardiographic data and major complications were recorded through the outpatient clinic and telephone. Results The postoperative ventricular septal thickness, left ventricular outflow tract gradient and aortic gradient were significantly lower than those in preoperation with statistical differences (P<0.05). During the mean follow-up 25.6 ± 28.2 months period, 1 patient died of cerebral hemorrhage, 1 patient was implanted a permanent pacemaker, and 1 patient had a postoperative new-onset atrial fibrillation. All patients had a satisfied prosthetic valve function and the left ventricular outflow tract gradient. The patient's symptoms and heart function significantly improved postoperatively. Conclusion For patients with hypertrophic obstructive cardiomyopathy associated with moderate to severe aortic stenosis, concomitant aortic valvulopasty at the time of modified extended Morrow procedure is an appropriate and effective treatment, which can significantly alleviate the clinical symptoms, and improve quality of life with a satisfied prognosis.