PTEN基因转染对卵巢癌SKOV3细胞生长抑制和诱导凋亡的研究

目的研究外源性PTEN基因转染对人卵巢癌SKOV3细胞生长增殖抑制和凋亡诱导作用,探索卵巢癌的新治疗方法。方法将携带PTEN基因的真核表达载体pBP-PTEN和不含该基因的空载体pBP转染卵巢癌SKOV3细胞,实验分组为pBP-PTEN、pBP和SKOV3组,四甲基偶氮唑蓝(MTT)法观察对SKOV3细胞的生长抑制作用,Annexin V/PI双标记流式细胞术检测转染后对SKOV3细胞的凋亡诱导作用,Annexin V/PI双染荧光显微镜观察细胞凋亡形态。结果MTT检测,0.1、0.2和0.3μg/孔PTEN质粒DNA转染SKOV3细胞48 h,生长抑制率分别为13.31%、27.67%、42.25%,不同时间点(24、48和72 h)检测,细胞生长抑制率存在剂量-时间依赖关系。光镜观察,转染24 h后即可见明显的形态学改变。流式细胞术检测,4μg/孔PTEN质粒DNA转染SKOV3细胞24和48 h后,细胞凋亡率分别达38.08%和65.60%(P<0.01)。Annexin V/PI双染荧光显微镜观察,细胞凋亡率存在时间-剂量以来关系。结论PTEN基因转染抑制人卵巢癌细胞增殖并显著诱导细胞凋亡。     

靶向EGFR基因RNA干扰对人卵巢癌SKOV_3细胞增殖的抑制作用

目的 利用RNA干扰技术下调表皮生长因子受体(epidermal growth factor receptor,EGFR)基因的表达,观察其对卵巢癌SKOV3细胞增殖的影响.方法 构建针对EGFR基因的siRNA真核表达载体,转染入卵巢癌SKOV_3细胞中,并筛选稳定表达siRNA的转化克隆,RT-PCR及Western blot分别检测EGFR mRNA和蛋白表达,流式细胞仪检测细胞周期和凋亡,克隆形成实验及MTY法检测细胞克隆形成率及细胞体外的增殖情况.结果 成功构建表达质粒pGenSil-HK、pGcnSil-EGFRI和pGenSil-EGFR2,并转染SKOV,细胞,通过G418筛选后获得稳定转染克隆,RT-PCR及Western blot分析表明转染pGenSil-EGFRI、pGenSil-EGFR2后的细胞EGFR mRNA和蛋白表达均受到了明显抑制,FGFR mRNA抑制率分别为41.87%和68.07%,蛋白表达抑制率分别为45.21%和70.25%.与未转染组和pGenSil-HK组相比,pGenSil-EGFR2组细胞凋亡比例显著增加,G_1期细胞增多,而S期细胞减少(P<0.05);转染pGenSil-HK组克隆形成率为(0.82±0.03),转染pGenSil-EGFR2组克隆形成率为(0.61±0.04),二者比较差异显著(P<0.05),MTT显示细胞培养36 h后,pGenSil.EGFR2组的细胞生长均显著低于未转染组和转染pGenSil-HK组(P<0.05).结论 靶向EGFR基因RNA干扰能够阻抑卵巢癌SKOV_3细胞中的EGFR表达,诱导细胞凋亡、调控细胞周期再分布、抑制细胞增殖.     

自噬基因Beclin1对上皮性卵巢癌细胞SKOV3生长的抑制作用

目的 观察自噬基因Beclin 1在人卵巢癌细胞株SKOV3中过表达对肿瘤细胞在体内、体外生长活性的影响.方法 脂质体法将重组质粒pcDNA3.1/Beclin1转染人卵巢癌细胞株SKOV3,MTT法分析外源性Beclin1过表达对SKOV3增殖的影响,流式细胞仪检测转染后肿瘤细胞的凋亡及自噬情况.将重组质粒pcDNA3.1/Beclin1转染SKOV3细胞后,接种到裸鼠皮下,观察体内致瘤活性及生长情况;免疫组化检测瘤组织Beclin1蛋白的表达.结果 Beclin 1在SKOV3中的过表达后抑制肿瘤细胞在体外的生长,抑制率为58.68%;pcDNA3.1/Beclin1转染后SKOV3的凋亡率为(21.26±3.89)%,高于空质粒pcDNA3.1转染组和未转染组,差异有显著性(P<0.05);流式细胞仪检测pcDNA3.1/Beclin1转染后SKOV3细胞MDC平均荧光强度高于pcDNA3.1转染组和未转染组.重组质粒pcDNA3.1/Beclin1使SKOV3细胞在裸鼠体内成瘤时间延长,瘤体体积及质量明显小于空质粒组和空白对照组,抑瘤率为50.27%.结论 自噬基因Beclin1在人卵巢癌细胞SKOV3中过表达可抑制SKOV3在体内、体外的增殖,针对自噬基因Beclin1的卵巢癌基因治疗可能具有可行性.     

mIL-12基因转染人卵巢癌SKOV3细胞株抗肿瘤免疫作用研究

目的 观察含mIL-12全长基因的质粒转染到SKOV3卵巢癌细胞中,在脾细胞存在的情况下相关细胞因子的表达及免疫抗肿瘤作用.方法 脂质体转染技术将基因转染至SKOV3卵巢癌细胞中(SKOV3/IL-12),同时以空质粒载体转染SKOV3细胞(SKOV3/neo)作为对照,描绘生长曲线,ELISA方法检测IL-12及INF-γ的表达,MTT方法检测对SKOV3卵巢癌细胞的抑制率.结果 转染48、60h SKOV3/IL-12细胞中IL-12蛋白表达量与SKOV3/neo及SKOV3组比较,差异均有统计学意义(P＜0.05);SKOV3/IL-12细胞增殖能力降低,抑制率63.71%与SKOV3/neo及SKOV3细胞比较,差异均有统计学意义(P＜0.05).在脾细胞作用下产生INF-γ,以作用后24h表达量高,约(173±17.8)pg/mL,较未转染组高,比较有统计学意义(P＜0.05);在脾细胞的作用下,IL-12对SKOV3卵巢癌细胞有抑制其增殖的作用.结论 ①可以将IL-12基因转染至SKOV3卵巢癌细胞中并表达IL-12.②IL-12基因转染在效应细胞作用下能够明显降低 SKOV3细胞株的增殖能力.     

THY1基因对上皮性卵巢癌细胞SKOV3生长的抑制作用

目的 构建THY1真核表达质粒,并探讨THY1基因对上皮性卵巢癌细胞系SKOV3生长的影响.方法 通过RT-PCR方法,从人正常卵巢组织中获得THY1基因,将其插入真核表达质粒pcDNA3.1( )中,构建成重组质粒pcDNA3.1( )-THY1,并转入大肠杆菌JM109,筛选出含有正确插入片段的克隆,经PCR、酶切及DNA测序鉴定;脂质体介导法转染SKOV3细胞并筛选稳定表达(SKOV3-THY1组),同时设空质粒转染组(SKOV3-Null组)和空白对照组(SKOV3组),RT-PCR和Western blotting鉴定重组质粒的表达情况;MTT法和流式细胞术检测THy1对SKOV3细胞生长和凋亡等生物学行为的影响.结果 经过PCR、酶切及DNA测序证实,外源性THY1基因正确插入到真核表达质粒pcD-NA3.1( )中,RT-PCR和western blotting证实此重组质粒已整合于SKOV3细胞并获稳定表达;MTT法结果提示SKOV3-THYl组的细胞抑制率(第5天的细胞抑制率为56.6%)明显高于SKOV3-Null组(12.5%)(P＜0.05);流式细胞术检测结果显示,SKOV3-THY1组凋亡率(31.8%)明显高于SKOV3-Null组(10.5%)和SKOv3组(9.8%),差异有统计学意义(P＜0.05),SKOV3-Null组和SKOV3组间差异无统计学意义(P＞0.05).结论 成功构建了THY1真核表达质粒pcDNA3.1( )-THY1,该质粒转染SKOv3细胞可抑制其生长,THY1基因可能在上皮性卵巢癌发生、发展的过程中起重要作用.     

ARLTS1基因重组质粒对卵巢癌细胞株SKOV3生长和凋亡的影响

目的 探讨Ras超家族成员ARLTS1基因对卵巢癌细胞株SKOV3生长及凋亡的影响.方法 构建真核表达质粒pCMV-Tag 3B-ARLTSI,并转染卵巢癌SKOV3细胞株,采用RT-PCR技术和Western blot方法检测ARLTS1基因转染组、空载体pCMV-Tag 3B转染组和未转染组中ARLTS1 mRNA及蛋白表达水平,用MTT及流式细胞仪检测各组细胞生长、周期及凋亡率等生物学行为的变化,Western blot检测细胞easpase-3和bcl-2蛋白表达水平的变化.结果 真核表达质粒pCMV-Tag 3B-ARLTSI转染SKOV3细胞后,经PCR和Western blot证实转染成功.ARLTSI转染SKOV3细胞后,细胞生长明显受抑(P<0.05).流式细胞术检测发现ARLTS1基因转染组与空载体转染组及未转染组细胞相比,S期细胞比例明显增多(P=0.035和0.011,细胞凋亡率(36.7%)显著高于另两组细胞(P均<0.001).ARLTS1基因转染组细胞中caspase-3和bel-2蛋白表达水平分别下降34.9%和47.7%,与未转染组细胞相比差异有统计学意义(P<0.05).结论 ARLTS1基因转染后能抑制人卵巢癌细胞SKOV3的生长,调控SKOV3细胞周期,可能通过caspase途径促进肿瘤细胞凋亡·     

人Bub1基因shRNA真核表达质粒的构建及其对人卵巢癌细胞SKOV3紫杉醇敏感性的影响

目的 构建人Bub1 shRNA真核表达质粒,鉴定该质粒对人卵巢癌SKOV3细胞中Bub1基因的抑制作用,并探讨其对SKOV3细胞紫杉醇敏感性的影响.方法 构建pEGFP-Bub1-shRNA质粒,将其经脂质体Lipo 2000TM转染SKOV3细胞后,通过RT-PCR及Western blot检测干扰效率,流式细胞仪检测细胞凋亡率,MTT法比较转染前后SKOV3细胞的紫杉醇敏感性.结果 成功构建了pEGFP-Bub1-shRNA质粒;RT-PCR 和Western blot检测结果提示,转染后Bub1的mRNA和蛋白表达均显著降低;MTT和FACS提示,与对照组细胞相比,转染后SKOV3细胞生长抑制率及凋亡率明显降低(P<0.05).结论 pEGFP-Bub1-shRNA质粒能有效抑制Bub1 mRNA及蛋白的表达,并降低SKOV3细胞紫杉醇敏感性,该质粒的成功构建为进一步研究Bub1基因的生物学功能提供了工具.     

重组凋亡素对人卵巢癌裸鼠移植瘤生长抑制作用的影响

目的 观察凋亡素(VP3)基因真核表达质粒对人卵巢癌裸鼠异种移植瘤生长的抑制作用.方法 建立人卵巢癌(COC1)细胞裸鼠异种移植瘤模型.实验裸鼠分为四组:高剂量实验组(pcDNA-VP3质粒DNA,瘤内注射,100μg/只);低剂量实验组(pcDNA-VP3质粒DNA,瘤内注射,50μg/只);空载体对照组[pcDNA3.1(+)质粒DNA,瘤内注射,100μg/只];脂质体对照组(脂质体,瘤内注射,0.2mL/只).每3d测量皮下移植瘤长、宽径,按标准公式V=L×W2X0.52计算移植瘤体积.12天后处死裸鼠,称取瘤重.使用TUNEL法观察凋亡素对皮下移植瘤细胞凋亡程度的影响.结果 pcDNA9·vP3高剂量组和低剂量组卵巢癌裸鼠皮下移植瘤生长明显受抑制.高剂量组和低剂量组肿瘤生长抑制率分别为76%和52%;瘤重抑制率分别为71.9%和49.5%(P<0.05).TUNEL实验结果表明凋亡素在体内以凋亡方式诱导肿瘤细胞死亡.结论 重组凋亡素基因真核表达质粒具有抑制人卵巢癌裸鼠异种移植瘤生长作用.凋亡素在瘤组织中以诱导凋亡方式抑制卵巢癌裸鼠异种移植瘤生长.     

原花青素对卵巢癌SKOV3细胞增殖和凋亡的影响

目的探讨葡萄籽提取物原花青素对卵巢癌SKOV3细胞增殖和凋亡的影响和机制。方法体外培养的SKOV3细胞与25、50、100、200、400μg/ml的葡萄籽提取物原花青素共孵育,分别在24、48、72h时观察细胞形态学变化,MTT检测细胞增殖抑制率,流式细胞和TUNEL分析细胞凋亡,RT-PCR检测survivin在mRNA的表达情况,Western blot检测SKOV3细胞survivin在蛋白水平的表达。结果不同浓度（25、50、100、200、400μg/ml）原花青素对SKOV3细胞作用48h的细胞增殖抑制率分别为48.67%、53.85%、67.03%、73.78%、77.39%。流式细胞和TUNEL检测经25μg/ml原花青素处理24、48h后SKOV3细胞凋亡率分别为31.98%、45.78%。葡萄籽原花青素还可以明显降低survivin的mRNA和蛋白水平的表达。这些作用均随原花青素浓度和作用时间的延长而增强。结论原花青素可能通过降低survivin的表达,在体外抑制SKOV3细胞增殖,并促进其凋亡。     

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.