ERR1与核受体辅活化子相互作用位点研究

目的分析ERR1与核受体辅活化子相互作用的位点.方法用常规PCR方法和重叠延伸PCR构建ERR1的各种突变体到表达质粒pGBT9上,通过酵母双杂交实验分析其与已知核受体辅活化子PNRC的相互作用.结果成功构建了ERR1的缺失突变体pGBT9/ERR1 1-412、pGBT9/ERR1 1-144、pGBT9/ERR1 190-412 、pGBT9/ERR1 145-423、 pGBT9/ERR1 190-423、 pGBT9/ERR1 190-423 F232A、 pGBT9/ERR1 190-423 K244A.酵母双杂交实验显示ERR1的氨基酸145-423和190-423 可分别与PNRC相互作用;ERR1 190-423 K244A与PNRC的相互作用明显低于ERR1 190-423;其它突变体与PNRC的相互作用未检测到.结论 ERR1与核受体辅活化子相互作用的位点位于ERR1的配体结合结构域(LBD,aa190-423),ERR1与核受体辅活化子相互作用依赖于其LBD的AF2结构域,AF2结构域外的其它氨基酸F232、K244也对ERR1与核受体辅活化子相互作用起关键作用.     

EOLA1基因5'侧翼区的克隆及调控功能初步研究

目的研究内皮细胞高表达脂多糖相关因子1(endothelial-overexpressed lipopolysaccharide-associated factor 1,EOLA1)基因5'侧翼区的调控序列.方法通过基因组步移克隆EOLA1基因5'侧翼区不同长度的片段,插入β-半乳糖苷酶(β-gal)报告基因载体,分析各片段在ECV304细胞中的β-gal调节活性.结果含EOLA1基因5'侧翼区-1～-2 659 bp和-1～-1 951 bp序列的重组质粒在ECV304细胞中能明显表现β-gal上调活性,而-1～-361 bp序列的重组质粒活性无明显变化.结论 EOLA1基因5'侧翼区-361～-1 951 bp内存在基因转录启动子元件.     

带3蛋白C末端132个氨基酸残基与血型糖蛋白A相互作用位点的研究

目的：利用酵母双杂交系统探寻带3蛋白与血型糖蛋白A(GPA)的相互作用位点。方法：采用PCR方法，从pFAST-Bac-AE1-C-end杆状病毒表达载体中扩增出AE1—C—end截断突变体(Arg832-Arg879)，将突变体的cDNA片段插入酵母双杂交系统GAL4AD端表达载体中，观察其在选择性培养基上的表达情况。用醋酸锂法将构建好的重组质粒与BD端表达质粒共同转化酵母菌AHl09，经酵母双杂交营养缺陷培养和β—半乳糖苷酶检测证实带3蛋白C—末端与GPA之间的作用位点。结果：成功构建了AE1-C-末端截断突变体酵母双杂交的AD端表达质粒，证实带3蛋白C-末端截断突变体与GPA不止有一个相互作用位点。结论：带3蛋白与GPA的作用位点不仅在带3蛋白的酸性C端域，还涉及其最后两次跨膜域。     

甲型H3N2流感病毒截短型PB1-F2蛋白与宿主蛋白的相互作用的初步研究

目的利用酵母双杂交技术研究甲型H3N2流感病毒截短型PB1-F2蛋白与人类宿主蛋白的相互作用,为该病毒蛋白的功能研究和致病机制提供理论依据。方法以本实验室分离和鉴定的甲型H3N2流感病毒A/Guangdong/7028/2010为模版,构建pGBKT7-PB1-F2重组载体,利用Y2HGold酵母双杂交系统,从人类通用cDNA文库中筛选与其相互作用的蛋白。结果成功构建含诱饵蛋白基因的pGBKT7-PB1-F2重组载体,转化酵母自激活和毒性实验显示为阴性;酵母双杂交实验显示Y2HGold和Y187酵母的结合率为5.22%,符合实验要求;经筛选和验证后,得到3个与截短型PB1-F2蛋白有相互作用的阳性克隆,分别为钾/钠ATP酶β1亚基、热休克蛋白40和白介素-2受体γ亚基。结论初步推断截短型H3N2流感病毒PB1-F2蛋白可能影响流感病毒在宿主细胞中的复制功能和凋亡调控。     

整合素β3亚基不同片段在酵母双杂交系统中的表达及对报告基因激活作用的检测

目的:为建立用于筛选人血小板整合素蛋白αⅡbβ3拮抗剂的高通量药物筛选模型,对其β3亚基不同片段在酵母双杂交系统中的表达及对报告基因的激活作用进行初步研究.方法:通过PCR扩增得到6个不同长度的整合素β3亚基基因片段,包括片段A1(55E-199Q)、A2(235K-385S)、A3(4I-454T)、A4(4I-77S)、A5(4I-147S)和A6(4I-284S),分别克隆到酵母双杂交诱饵载体pAS2-1中,然后将重组质粒导入酵母双杂交菌株Y190中,检测其表达产物在酵母细胞中对报告基因的激活作用.结果:6个片段对酵母均无毒性作用,片段A1、A2、A3、A5、A6不能激活报告基因HIS3和LacZ的表达,而片段A4和一个A3的缺失突变体可以激活报告基因的表达,β3亚基N末端存在一个转录激活区.结论:在建立模型时可以使用A1、A2、A3片段,但转录激活是否是β3亚基的生理功能仍有待进一步研究确证.     

腺病毒2型E1B 55KD癌蛋白与hDaxx相互作用

目的：研究腺病毒（adenovirus，Ad）2型E1B 55KD癌蛋白（Ad2 E1B55 KD）与人Daxx(humanDaxx，hDaxx)的相互作用及作用部位。方法：利用共免疫沉淀反应研究Ad2/5E1B 55KD与hDaxx的结合反应，通过酵母双杂交体系测定两种蛋白质的相互作用。结果：酵母双杂交试验结果显示Ad2E1B 55KD通过C端58个氨基酸（amino acid，aa）与hDaxx结合并发生相互作用。共免疫沉淀反应和Western blot结果证实Ad2/5E1B 55KD能在细胞内外与hDaxx直接结合。结论：Ad2E1B 55KD与hDaxx结合并发生相互作用。     

羧基末端结合蛋白CtBP2与泛素结合酶UBE2Ⅰ的相互作用

目的筛选并确定人羧基末端结合蛋白CtBP2的相互作用蛋白。方法用酵母双杂交技术,以人CtBP2为诱饵蛋白筛选人肝cDNA文库,获得与之相互作用的候选蛋白,采用酵母共转化和细胞免疫共沉淀实验确认相互作用的特异性,最后利用荧光蛋白融合表达技术和荧光显微镜观察确认CtBP2与其相互作用蛋白的亚细胞共定位情况。结果酵母双杂交筛选获得了41个与Bd-CtBP2相互作用的阳性克隆,编码10个不同的蛋白,其中有4个克隆编码泛素结合酶UBE2Ⅰ的不同片段。从人肝cDNA文库中扩增获得UBE2Ⅰ的全长编码序列,酵母共转化和细胞免疫共沉淀实验证实CtBP2与UBE2Ⅰ能够特异性结合。亚细胞定位研究表明GFP-CtBP2弥散分布于细胞核,DsRed-UBE2Ⅰ不均匀分布于细胞核,有部分点状聚集。两者共转染时能够呈点状共定位于细胞核。结论人CtBP2能够在细胞核内与UBE2Ⅰ特异性相互作用,是UBE2Ⅰ的靶蛋白。     

急性传染性非典型肺炎病毒M蛋白片段抗原性鉴定及其B细胞表位分析

目的:鉴定原核表达的重组急性传染性非典型肺炎(SARS)病毒M蛋白N端1～43氨基酸(aa)的抗原性,并筛选其B细胞表位。方法:GlutathioneSepharose4B亲合层析柱纯化M融合蛋白,用SARS患者恢复期血清分别通过间接ELISA方法和Westernblot鉴定M蛋白片段的抗原性。为了定位B细胞表位,进一步将M蛋白片段截短为部分重叠的2段表达,分别表达含M蛋白N端1～28aa、16～43aa的融合蛋白,通过Westernblot检测B细胞表位所在位置。结果:获得了纯化的M融合蛋白;间接ELISA和Westernblot结果均证实,M蛋白片段有很强的抗原性;并进一步明确B细胞表位位于M蛋白N端1～15aa片段中。结论:原核表达的SARS病毒M蛋白片段N端1～15aa含有一个很强的B细胞表位,这将有助于SARS诊断试剂的研制,也可为多肽疫苗的研制提供帮助。     

EOLA1基因5′侧翼区的克隆及调控功能初步研究

目的研究内皮细胞高表达脂多糖相关因子1(endothelial overexpressedlipopolysaccharide associatedfactor1,EOLA1)基因5′侧翼区的调控序列。方法通过基因组步移克隆EOLA1基因5′侧翼区不同长度的片段,插入β半乳糖苷酶(βgal)报告基因载体,分析各片段在ECV304细胞中的βgal调节活性。结果含EOLA1基因5′侧翼区-1～-2659bp和-1～-1951bp序列的重组质粒在ECV304细胞中能明显表现βgal上调活性,而-1～-361bp序列的重组质粒活性无明显变化。结论EOLA1基因5′侧翼区-361～-1951bp内存在基因转录启动子元件。     

促凋亡因子Smac/DIABLO与核受体NR4A1相互作用的筛选和鉴定

目的 利用酵母双杂交技术筛选线粒体促凋亡因子野生型Smac/DIABLO的相互作用蛋白.方法 ①设计促凋亡因子野生型Smac/DIABLO引物,利用PCR在成人肝cDNA文库中扩增野生型Smac/DIABLO基因片段,构建酵母真核表达载体pDBLeu-Smac/DIABLO.②pDBLeu-Smac/DIABLO诱饵质粒转化酵母MaV203,Western blot检测融合蛋白在酵母中的正确表达,自激活作用的检测并确定抑制His基础表达的3AT浓度.③对成人肝cDNA文库的筛选.选择能同时激活His、Ura、LacZ 3个报告基因的克隆为阳性,利用回转实验和GST-pull down对阳性克隆进行鉴定.结果 成功构建pDBLeu-Smac/DIABLO载体,转化酵母细胞MaV203,无细胞毒性,无自激活作用,3AT浓度为25 mmol/L.经回转实验和GST-pull down证实了线粒体促凋亡因子Smac/DIABLO与核受体NR4A1之间具有相互作用.结论 Smac/DIABLO可能通过与核受体NR4A1的相互作用来影响核受体NR4A1对细胞生存或者凋亡的调控.     

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…     

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.     

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.     

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.     

猪肺磷脂注射液联合经鼻持续气道正压通气对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性的影响

目的 探讨猪肺磷脂注射液联合经鼻持续气道正压通气(NCPAP)对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性(CK-MB)的影响.方法 选取呼吸衰竭早产儿80例,分为观察组和对照组各40例.对照组采用NCPAP给氧治疗,观察组给予NCPAP给氧联合猪肺磷脂气管内给药.观察两组患儿治疗前及治疗12h、24 h后PaO2、PaCO2、血氧饱和度(SaO2)、pH的变化情况,检测治疗前及治疗5d后血清CK-MB水平;评估两组患儿的临床治疗效果.结果 两组患儿PaO2、PaCO2、SaO2、pH比较,差异均有统计学意义(P＜0.05),其中观察组治疗后的PaO2、SaO2、pH均高于对照组,PaCO2则低于对照组.两组的PaO2、SaO2、pH均随观察时间延长而升高(P＜0.05),PaCO2均随观察时间的延长而降低(P＜0.05).观察组治疗有效率为87.5％,显著高于对照组的70.0％ (P ＜0.05).治疗5d后两组患儿血清CK-MB水平均较前降低(P＜0.05),且观察组明显低于对照组(P＜0.05).结论 猪肺磷脂注射液气管内给药联合NCPAP可以显著降低呼吸衰竭早产儿CK-MB的含量,提高治疗有效率,起到很好的呼吸循环支持作用.     

Acupuncture Treatment of Vomiting

CASE HISTORY A female patient, 46 years old, head of the foreign affairs department of a certain university in Beijing, paid her first visit on October 9, 2006, with the chief complaint of vomiting for one month. She got vomiting after meals in early September. Before that, she had discomfortable sensation in the stomach due to angry with others, but she didn't pay much attention. Later, it developed into vomiting after eating. After the vomiting, the discomfort would be relieved, but with slight hypodynamia. She was once diagnosed as having 'neurogenic vomiting'. Having taken some western and Chinese drugs, the above symptoms were a little bit improved, but she would have nausea upon eating and with regurgitation. Because of the fear for vomiting, she did not dare to have food intake, with body weight reduction of 6 kilos in one month.     

Qiu Baoguo''''s Experience in Treating Consumptive Syndromes after Radio-Chemotherapies

Radiotherapy and chemotherapy are the important modern medical therapies for malignant tumors,yet they can also bring about serious local and systemic toxic side reactions so to decrease the patient;'s life quality,manifested by a series of consumptive symptoms.Having engaged in the combined work of Chinese and western medicine for nearly 50 years,the research fellow Qiu Baoguo in Henan Provincial Academy of TCM has developed his unique views on the TCM study of consumptive syndromes.The author of this essay had once the fortune tO follow Dr.Qiu in clinic,and specially would like to introduce in the following Dr.Qiu's experience in treating consumptive syndromes after radio-chemotherapies for patients with malignant tumor.     

Insomnia Due to Deficiency of Both the Heart and Spleen Treated by Acupuncture-Moxibustion and Chinese Tuina

OBJECTIVE: To observe therapeutic effects of the comprehensive therapy of acupuncture-moxibustion and Chinese Tuina for treatment of insomnia due to deficiency of both the heart and spleen. METHODS: 92 cases were divided randomly into the treatment group (treated by acupuncture-moxibustion and Chinese Tuina) and the control group (treated by acupuncture-moxibustion). RESULTS: The therapeutic effect of the treatment group was obviously superior to that of the control group (the CHI2 test showed P < 0.01). CONCLUSIONS: The comprehensive therapy of acupuncture-moxibustion and Chinese Tuina can give marked therapeutic effects for treatment of insomnia due to deficiency of both the heart and spleen.