HRSP12慢病毒表达载体的构建及对宫颈癌HeLa细胞凋亡及增殖的影响

目的 构建热反应蛋白12（heat-responsive protein 12,HRSP12）慢病毒表达载体pWPI-HRSP12,包装慢病毒颗粒并感染宫颈癌细胞HeLa,分析过表达的HRSP12对HeLa细胞凋亡和增殖的影响.方法 用反转录PCR扩增HRSP12全长编码顺序,构建慢病毒表达载体,利用人胚肾细胞HEK293T包装重组的慢病毒颗粒,感染HeLa细胞,用蛋白免疫印迹法检测剪切的半胱氨酸/天冬氨酸蛋白水解酶-3（caspase-3）并用MTS比色法检测HeLa细胞增殖的情况.结果 编码全长HRSP12的cDNA片段为414bp,克隆至pWPI-linker载体成功构建了慢病毒表达载体pWPI-HRSP12,包装的慢病毒颗粒能够高效感染HeLa细胞,在细胞内表达Flag-HRSP12融合蛋白.HRSP12的过表达能够引起HeLa细胞caspase-3的剪切体增多,能够抑制HeLa细胞的增殖.结论 成功构建了慢病毒表达载体pWPI-HRSP12,初步结果表明,HRSP12可能具有诱导HeLa细胞凋亡、抑制细胞增殖的活性,为进一步研究HRSP12的生物学功能奠定了基础.     

S100P基因慢病毒表达载体的构建及对结肠癌Caco-2细胞的影响

目的:通过构建S100P慢病毒表达载体,研究其对结肠癌Caco-2细胞的影响.方法:以DLD-1细胞cDNA为模版,PCR扩增S100P基因序列,然后将该序列克隆插入慢病毒载体中,构建S100P慢病毒表达载体,包装产生慢病毒颗粒.将慢病毒颗粒感染Caco-2细胞,荧光显微镜观察细胞绿色荧光蛋白表达;应用逆转录聚合酶链反应(RT-PCR)和蛋白印迹(Western blot)技术检测S100P的表达情况;MTT法检测细胞生长变化;细胞平板克隆培养检测其细胞克隆形成能力.结果:构建的慢病毒表达载体Lenti-S100P经酶切和测序鉴定结果正确;携带S100P基因的慢病毒颗粒感染Caco-2后,细胞中S100P基因和蛋白过表达,促进细胞克隆形成能力.结论:本研究成功构建S100P慢病毒表达载体,为深入研究S100P基因的相关功能提供了一定的实验基础.     

IGF1R-shRNA重组慢病毒的构建及对肺癌A549细胞增殖的影响

目的 构建IGF1R基因的shRNA慢病毒载体,转染A549细胞鉴定沉默效率,观察其对A549细胞增殖能力的影响.方法 设计IGF1R干扰序列,与pGC-LV慢病毒载体重组形成shRNA表达载体,包装shRNA慢病毒颗粒,感染A549细胞,应用RT-PCR和Western blot检测IGF1R干扰效果;细胞生长抑制实验、克隆形成实验及细胞周期检测评价其对A549细胞增殖的影响. 结果 成功构建了IGF1R-shRNA重组慢病毒并高效感染A549细胞,IGF1R mRNA及蛋白表达量分别下降74.51％,70.53％;细胞群体倍增时间显著延长,克隆形成能力显著降低,细胞周期阻滞于G0/G1期. 结论 本研究构建的重组慢病毒能显著抑制IGF1R表达,抑制A549细胞增殖.     

靶向YWHAE基因shRNA慢病毒表达质粒的构建及功能验证

目的 构建靶向YWHAE基因的shRNA慢病毒表达质粒,并验证其对AGS胃癌细胞增殖的影响. 方法 设计并合成5对针对人YWHAE基因的shRNA序列,分别克隆入pLentiLox3.7(pLL3.7)慢病毒表达质粒,接着将重组的慢病毒表达质粒和包装质粒PHR、包膜质粒VSVG一起采用磷酸钙法转染293T细胞包装慢病毒,收集制备的慢病毒感染AGS细胞,用抗生素Puromycine进行筛选.Western-blot检测感染细胞YWHAE蛋白的表达.选取干扰效率最高的慢病毒表达质粒,针对性设计siRNA的点突变引物,重叠延伸PCR法扩增获得点突变的YWHAE基因,克隆入pcDNA3.1/myc-His(-)A载体,构建YWHAE点突变的表达质粒,转染YWHAE沉默效果最好的AGS细胞株,Western-blot检测转染细胞YWHAE蛋白的回复表达.采用MTS法检测YWHAE-shRNA慢病毒对AGS细胞增殖的影响. 结果 5对针对人YWHAE基因的shRNA序列构建的慢病毒中,pLL3.7-siYWHAE-5包装成的慢病毒抑制AGS细胞的YWHAE蛋白表达的效果最明显,仅为对照组相对表达量的(0.269±0.083)倍;pLL3.7-siYWHAE-5包装的慢病毒,其干扰效应可经由YWHAE点突变表达质粒回复.与对照组比较,YWHAE-shRNA组AGS细胞增殖能力明显下降. 结论 成功构建了靶向YWHAE基因的shRNA慢病毒表达质粒,获得YWHAE基因表达显著下调的AGS细胞株;探明YWHAE表达的下调可有效抑制AGS细胞的增殖,提示YWHAE在胃癌中的致癌潜能.     

KIF5B过表达和干扰慢病毒载体的构建及对结直肠癌细胞增殖的影响

目的 构建马达蛋白KIF5B基因重组慢病毒过表达和RNA干扰载体并进一步构建稳定转染结直肠癌细胞模型,检测敲低KIF5B蛋白对结直肠癌细胞增殖的影响。方法 将PCR扩增的人KIF5B基因序列和设计合成的shRNA序列分别插入GV-358和GV-248表达载体。采用慢病毒三质粒包装系统共转染HEK293T细胞,进行病毒包装和扩增。重组慢病毒感染结直肠癌细胞,荧光显微镜观察绿色荧光强度,Western blot法检测KIF5B过表达和沉默效率。CCK-8检测KIF5B干扰后HCT116和SW480细胞的增殖,并检测细胞内周期相关蛋白的表达。结果 KIF5B过表达及shRNA载体测序与原设计序列完全符合。重组病毒感染结直肠癌细胞中,可见绿色荧光蛋白表达。KIF5B过表达组细胞中KIF5B-FLAG蛋白大量表达,KIF5B沉默细胞中,KIF5B的蛋白表达量显著下降。KIF5B被敲低后,HCT116和SW480细胞增殖加快,细胞内p21、p16两种蛋白表达下调。结论 成功建立了KIF5B过表达和沉默的结直肠癌细胞模型,并且发现KIF5B表达被干扰后,可能会抑制p21与p16蛋白的表达,加速细胞周期,从而促进结直肠癌细胞增殖。     

细胞角蛋白8 GFP/Puro 双标干涉慢病毒系统的构建及对细胞凋亡的影响

目的构建细胞角蛋白8（CK8）的双标慢病毒干涉载体,获得高滴度慢病毒颗粒,感染HCT116细胞建立稳定株,检测CK8
敲低对细胞凋亡的影响。方法将CK8 的siRNA序列插入慢病毒表达载体GV248,并与包装质粒PMD、SPA共转染293T细
胞,36、48 h分两次收集慢病毒上清,应用流式细胞术检测病毒滴度。获得的病毒感染HCT116细胞,用嘌呤霉素筛选阳性细胞,
Western blotting检测干涉效果。采用Annexin V/PI染色检测干涉CK8对化疗药物顺铂诱导的细胞凋亡的影响。结果与结论
成功构建CK8干涉慢病毒载体并得到干涉稳定株,在HCT116细胞中干涉CK8 使细胞对顺铂引起的凋亡更加敏感。
     

VHL慢病毒表达和干扰载体的构建及对肾癌细胞增殖和凋亡的影响

目的构建人VHL重组慢病毒表达载体及干扰载体,建立稳定转染细胞株,观察VHL对肾癌细胞株增殖和凋亡的影响。
方法构建pZsGreen1-VHL及pLL3.7-shVHL重组慢病毒载体,与3质粒包装系统用脂质体法共同转染293T细胞,包装成病毒
颗粒,分别感染A498、Caki-1细胞,并进行RT-PCR和Western blot检验细胞中VHL的表达。用MTS法和流式细胞仪检测VHL
对肾癌细胞增殖和凋亡效应的影响。结果重组慢病毒载体及稳定转染细胞株构建成功,转染后VHL在细胞中表达明显变化;
VHL过表达细胞的增殖速度明显低于各对照组,而凋亡率明显高于各对照组;VHL干扰细胞的增殖速度明显高于各对照组,而
凋亡率明显低于各对照组（P<0.05）。结论VHL对肾癌细胞具有抑制增殖和诱导凋亡的作用。
     

神经元抑制性沉默元件双链RNA慢病毒载体的构建与鉴定

目的 构建神经元抑制性沉默元件(RE-1/NRSE)双链RNA的慢病毒载体.方法 根据RE-1/NRSE序列合成靶序列的寡核苷酸序列,退火形成双链DNA,与经HpaⅠ和XhoⅠ双酶切后的pGC-LV载体连接产生L-smRE-1/NRSE慢病毒载体,采用PCR和测序对阳性克隆进行鉴定.用L-smRE-1/NRSE和包装质粒pHelper 1.0、pHelper2.0共转染293T细胞,包装产生慢病毒颗粒,在倒置荧光显微镜下观察293T细胞中绿色荧光蛋白的表达量,并计算病毒滴度,初步观察其对大鼠间充质干细胞的转染效率.结果 PCR和测序证实,构建出了RE-1/NRSE双链RNA的慢病毒载体L-smNRSE/RE-1.包装慢病毒,浓缩病毒悬液的滴度为4×10~8 TU/ml.慢病毒颗粒能稳定转染大鼠间充质干细胞,当感染复数为80时,感染效率达100%.结论 成功构建了RE-1/NRSE dsRNA的慢病毒表达载体.     

TGFβ1基因RNAi慢病毒载体的构建与鉴定

目的:构建TGFβ1基因RNAi慢病毒载体.方法:根据人TCFβ1的mRNA序列选择3个靶序列并根据它们设计合成3对寡核苷酸序列.同时合成1对阴性对照寡核苷酸序列;将以上4对寡核苷酸序列退火后连人pRNA-U6/Lenti质粒,酶切和测序鉴定后,将以上质粒分别和包装质粒混合物共转染293FT细胞,包装产生病毒颗粒.各组病毒载体转染Hela细胞后,运用Real-Time PCR和ELISA检测TGFβ lmRNA和蛋白的表达水平.结果:酶切和测序证实目的寡核苷酸片段已被准确克隆到pRNA-U6/Lenti质粒;各质粒与包装质粒共转染293FT细胞后能产生高滴度的慢病毒载体颗粒;各组慢病毒载体感染Hela细胞后,有两组可以显著抑制TGFβ1mRNA水平及蛋白水平的表达,其中以第一组效果最佳.结论:成功构建了人TGFβ1基因RNAi慢病毒载体.     

CEA慢病毒载体的制备及其在树突状细胞中的表达鉴定

目的 构建人癌胚抗原(CEA)慢病毒表达载体并包装成感染性病毒颗粒,获得稳定表达CEA的树突状细胞(DC).方法 以人CEA的测序质粒为模板,PCR扩增CEA全长,装入pLentiGFP转移质粒,经过测序证实其序列与标准序列完全一致.将pLentiGFP-CEA、包装质粒p△8.2和pVSV-G用LipofectamineTM2000共同转染293T细胞,包装成感染性病毒颗粒,感染树突状细胞,并进行RT-PCR和Western blot检验CEA在细胞中的表达.结果 DC细胞病毒感染48h后荧光显微镜观察CEA慢病毒载体在细胞中高效表达,PCR扩增可得到人CEA的2009 bp基因片段,与预期大小一致,Western blot显示CEA在感染DC中表达.结论 成功构建了CEA慢病毒表达载体,重组慢病毒感染DC细胞后表达出有活性的CEA蛋白,为进一步从分子水平探讨CEA的功能奠定了基础.     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Electro-Acupuncture Combined with the Trigger Point Needle-Embedding for Treatment of Primary Trigeminal Neuralgia in 31 Cases

In recent years, the author of this essay has applied electro-acupuncture combined with the trigger point needle-embedding for treatment of primary trigeminal neuralgia in 31 cases, yielding satis- factory results as reported in the following.     

Investigation of Matrix Metalloproteinase -1, 2 and tissue inhibitor of matrix metalloproteinases-1 in Endometriosis

Objective： To explore the role of matrix metalloproteinase-1,2 （MMP-1, MMP-2） and tissue inhibitor of matrix metalloproteinases-1 （TIMP-1） in endometriosis. Methods： The eutopic and ectopic endometria from 40 subjects suffering from endometriosis and regular.endometria from 40 subjects （excluding endometriosis） were collected and examined by in situ hybridization technology and western blot assay. Results： Both expressions of MMP-1 and -2 were stronger in ectopic endometrium and eutopic endometrium than in normal endometrium. On the contrary, the expression of TIMP-1 in ectopic endometrium and eutopic endometrium was lower. The differences were significant （P 〈 0.01 ）. Moreover, there was no relationship among the expressions of MMP-1, 2 and TIMP-1 in ectopic endometrium. Conclusion： The expressions of MMP-1, 2 and TIMP-1 lose balance and lack of periodic changes in ectopic endometrium , which explains the biological invasive behavior of endometriosis. It was suggested-that regulating the balance between the MMPs and TIMP-1 should be an ideal therapeutic target to endometriosis.     

Shi Da-zhuo (史大卓) —An outstanding cardiologist of integrative medicine

Prof. SHI Da-zhuo, Ph.D., male, was born on March 20, 1960. Prof. SHI entered the Ph.D. program in 1990 at the China Academy of Chinese Medical Sciences under the supervision of Prof. CHEN Ke-ji, majoring in the treatment of cardiovascular diseases. After receiving his Ph.D. degree in 1993, Prof. SHI started working at the Cardiovascular Center in Xiyuan Hospital affiliated to China Academy of Chinese Medical sciences.     

Persist in and Carry Forward the Integrative Medical Research——Speech at the 6th National General Congress of Chinese Association of Integrative Medicine by Academician CHEN Zhu,Minister of Ministry of Health

The 6th National General Congress of Chinese Association of Integrative Medicine （CALM） was convened at 19-20, April 2008 in Beijing. Academician CHEN Zhu, the minister of Ministry of Health indicated at the congress that the integration of Chinese and Western medicine is very well in keeping with the situation of our country and the general rule of development in medical science; and as a good integration of Chinese medicine and Western medicine, it is mutually beneficial and advantageous to both of them. Seeing the creativity shown in integrative medical investigation in theoretic and methodological sides, we should and must persist in and develop it.