携带IRES的BMP2绿色荧光蛋白表达载体的构建和表达

目的:构建携带有BMP2基因的pIRES2绿色荧光蛋白表达载体,为BMP2在体内外表达及蛋白定位提供标记.方法:酶切pCDAN3.1-BMP2质粒,获得BMP2cDNA片段并亚克隆至pUC18载体上,随后用SalⅠ单酶切pUC18-BMP2,再次获得BMP2cDNA,同时用SalⅠ将载体pIRES2-EGFP线性化后去磷酸化修饰.连接二者构建重组质粒.酶切筛选阳性克隆并鉴定插入的方向.重组质粒转染细胞,用激光共聚焦显微镜、RT-PCR及流式细胞仪检测基因在细胞内的定位、表达及转染效率;结果:重组载体经酶切和测序证明构建正确,并在细胞中表达.结论:成功构建了pIRES2-BMP2-EGFP表达载体,为研究BMP2的细胞内定位提供了一个重要而方便的工具.     

人IL-26的基因克隆及其真核表达载体的构建

基因，构建其真核表达载体并探讨在真核细胞中的表达。方法：提取人外周血单个核细胞总RNA，逆转录 聚合酶链反应（RT PCR）扩增hIL 26基因；目的片段与pMD18 T载体连接，转化大肠杆菌E.coli DH5α,菌落PCR、酶切分析和DNA序列分析鉴定重组克隆。用SalⅠ和EcoRⅠ将目的片段切下，插入pIRES2 EGFP的相应位点，构建表达载体pIRES2 EGFP/hIL 26并进行酶切鉴定。将重组质粒用非脂质体试剂Fugene 6转染至COS7细胞中。结果：重组克隆载体pMD18 T/hIL 26内插入片段序列与GenBank上报道的hIL 26基因序列完全一致；pIRES2 EGFP/hIL 26经酶切鉴定与预期结果一致；荧光显微镜观察可见转染后的细胞有荧光出现，Western blotting 鉴定证明hIL 26基因得到了有效表达。结论：成功构建了hIL 26基因的真核表达载体并在真核细胞中获得了有效表达。     

未知基因CGI-100的克隆及其真核表达载体的构建

目的:为探讨研究未知基因CGI-100的功能,克隆人CGI-100基因并构建其真核表达载体.方法:通过RT-PCR从人白血病K562细胞中克隆CGI-100基因全长编码区,将该cDNA片段亚克隆至载体pMD18-T SimpleT中,经测序鉴定后,用BamH Ⅰ和Pst Ⅰ双酶切将目的cDNA片段定向克隆至相同处理的pIRES2-EGFP真核表达质粒中,然后经酶切、PCR鉴定和DNA序列测定三重鉴定方法对重组质粒进行鉴定.结果:经酶切、PCR及测序鉴定证实,CGI-100基因全长编码区cDNA被准确正向插入至pIRES2-EGFP质粒的酶切位点BamH Ⅰ和Pst Ⅰ之间,未发现碱基突变或移位.结论:成功地构建并鉴定了含CGI-100基因全长编码区的真核表达质粒,为以后研究该基因的功能奠定了基础.     

pIRES2-EGFP-hIL-10真核表达载体的构建及鉴定

目的构建带有报告基因EGFP的hIL-10真核表达载体。方法通过RT-PCR方法从人外周血淋巴细胞中扩增出IL-10基因,构建IL—10基因和报告基因EGFP基因真核表达载体pIRES2-EGFP—hIL-10,经PCR、酶切、测序等方法进行鉴定,紫外分光光度计测定质粒浓度及纯度。结果酶切、PCR及测序证实pIRES2-EGFP—hIL-10载体序列正确。结论成功构建真核表达载体pIRES2-EGFP—hIL-10,可为后续器官移植免疫耐受的研究奠定基础。     

单纯疱疹病毒胸苷激酶与绿色荧光蛋白基因真核共表达质粒的构建

【目的】构建含有人巨细胞病毒（CMV）调控表达的单纯疱疹病毒胸苷激酶（HSV-tk）与增强型绿色荧光蛋白（EGFP）基因真核表达质粒pCMV-TK-IRES-EGFP。【方法】设计HSV-tkcDNA的特异引物,PCR扩增获得HSV-tk基因序列,将PCR产物进行T载体克隆获得重组质粒pMD18T-TK,测序分析选定序列正确的克隆提取质粒,用限制性内切酶SalⅠ和BamHⅠ分别酶切pMD18T-TK和pCMV-IRES-EGFP质粒,将HSV-tk基因定向亚克隆至pCMV-IRES-EGFP载体,酶切鉴定,构建获得含EGFP和HSV-tk基因的重组质粒,Lipofectin介导转染小鼠黑色素瘤B16细胞并检测其表达情况。【结果】酶切见特异酶切图谱,该质粒在瞬时表达时获得EGFP的良好表达。【结论】含HSV-tk和EGFP基因真核表达质粒pCMV-TK-IRES-EGFP构建成功,为利用绿色荧光蛋白标记在后续实验中进行自杀性基因治疗的深入研究奠定了基础。     

单纯疱疹病毒胸苷激酶与绿色荧光蛋白基因 真核共表达质粒的构建

 【目的】 构建含有人巨细胞病毒(CMV)调控表达的单纯疱疹病毒胸苷激酶(HSV-tk)与增强型绿色荧光蛋白(EGFP)基因真核表达质粒pCMV-TK-IRES-EGFP。【方法】 设计HSV-tk cDNA的特异引物,PCR扩增获得HSV-tk基因序列, 将PCR产物进行T载体克隆获得重组质粒pMD18T-TK,测序分析选定序列正确的克隆提取质粒,用限制性内切酶SalⅠ和BamHⅠ分别酶切pMD18T-TK和pCMV-IRES-EGFP质粒,将HSV-tk基因定向亚克隆至pCMV-IRES-EGFP载体,酶切鉴定,构建获得含EGFP和HSV-tk基因的重组质粒,Lipofectin介导转染小鼠黑色素瘤B16细胞并检测其表达情况。【结果】 酶切见特异酶切图谱, 该质粒在瞬时表达时获得EGFP的良好表达。【结论】 含HSV-tk和EGFP基因真核表达质粒pCMV-TK-IRES-EGFP构建成功,为利用绿色荧光蛋白标记在后续实验中进行自杀性基因治疗的深入研究奠定了基础。     

人工锌指蛋白真核表达载体的构建及表达

目的 构建人工锌指蛋白ZFP基因的真核表达载体,检测其在真核细胞的表达情况,从而探讨人工锌指蛋白作为人工转录因子DNA结合域的可能性.方法 全基因合成人工锌指蛋白(putative zinc finger protein,ZFP)的核酸序列并克隆入pEGFP-N1及pIRES2-EGFP真核表达载体中,构建重组质粒pEGFP-N1/ZFP及pIRES2-EGFP/ZFP-Flag,通过酶切、菌落PCR及测序来鉴定重组载体的正确性.脂质体DOTAP体外转染重组质粒于COS-7细胞中,用荧光显微镜、RT-PCR、Western blot方法鉴定ZFP在该细胞中的表达.结果 正确构建了pEGFP-N1/ZFP、pIRES2-EGFP/ZFP-flag重组表达质粒,并且在COS-7细胞中成功进行了人工锌指蛋白ZFP的表达.结论 采用生物信息学手段获得的假定的锌指蛋白基因序列可以在真核细胞内正常表达.     

VCAM-1和EGFP双基因共表达重组腺病毒的构建

目的 构建VCAM-1和EGFP双基因共表达重组腺病毒载体.方法 采用DNA重组技术,将目的 基因VCAM-1克隆至含有报告基因EGFP的穿梭质粒;在BJ5183细胞中与pAdeasy-l质粒进行同源重组,产生重组腺病毒载体.结果 (1)VCAM-1基因与pAdTrack-CMV载体成功连接,经NotⅠ/XhoⅠ双酶切后电泳可见2个大小约为9kb和2kb左右条带,经PCR法扩增后电泳可见一个600bp左右条带,证明pAdTrack-CMV-VCAM-1重组质粒构建成功;(2)pAdTrack-CMV-VCAM-1质粒与pAdeasy-l质粒同源重组后,产物经PacⅠ酶切后电泳可观察到2个大小约为31kb和4kb左右条带,与预期结果相符.结论 Ad-VCAM-1-EGFP重组腺病毒载体构建成功.     

pIRES2－MLAA34－EGFP穿梭载体的构建及表达

目的：构建pIRES2－MLAA34－EGFP重组质粒,并对其进行原核诱导表达。方法用RT－PCR的方法从U937细胞中提取 MLAA－34基因,利用酶切 T4连接等分子生物学技术将 MLAA－34目的基因克隆至pIRES2－EGFP表达载体中,经PCR 酶切等技术对构建的重组表达载体pIRES2－MLAA34－EGFP进行鉴定后,转化大肠杆菌BL21并进行诱导表达。结果扩增出MLAA－34全长基因1014 bp,构建了pIRES2－MLAA34－EG－FP重组质粒,经PCR和双酶切鉴定,与预期大小一致。重组质粒在大肠杆菌中经IPTG诱导和SDS－PAGE检测,所表达的融合蛋白与预期蛋白相符合。结论成功构建了pIRES2－MLAA34－EGFP重组质粒,并使其在大肠杆菌中高效表达。     

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.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

Development on Adjustable Calibration Marker for Shock Wave Focus

Shock wave lithotripsy （SWL） is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it＇s difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.     

Study on the TCM Pathogenesis of Angiopathic Complications of Type II Diabetes

Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.     

Leptin, Ghrelin and TNF-α before and after Hypo-caloric Traditional Chinese Diet and Auricular Acupuncture

INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5     

Relationship between Dysglycemia and Carotid Atherosclerosis in Tibetan Population

People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

Luo Lingjie's Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.     

Dr.Zhang Ren's Experience in the Acupuncture Treatment of Different Diseases with the Same Therapeutic Principle

Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.