可溶性重组人IL23R-CHR在大肠埃希菌中的表达、纯化及活性研究

利用人白细胞cDNA文库体外扩增获得hIL23R-CHR目的基因,克隆至原核表达载体pET22b/pET28a/pET32a,转化BL21(DE3)宿主菌,并对工程菌的表达方式(直接表达、可溶性标签融合表达、分泌表达及包涵体表达)及表达量进行比较,确立pET 32a为表达载体,经IPTG诱导表达后通过镍亲和柱分离纯化融合蛋白Trx-IL23R-CHR,肠激酶4 ℃酶切Trx-IL23R-CHR分子24 h,上镍柱进行二次纯化,获得纯度达90%以上的rhIL23R-CHR分子。亲和力实验证实:原核重组表达的hIL23R-CHR与hIL23在物质的量比为1∶1时可以有效结合,小脑HE病理切片提示rhIL23R-CHR分子对实验性变态反应性脑脊髓炎(EAE)模型鼠有一定的保护作用。     

lncRNA ENST00000492363在子痫前期患者中的表达及对滋养层细胞的影响

目的 探讨lncRNA ENST00000492363 对滋养层细胞侵袭、迁移、生长的调控机制。方法 选取2018年1~6月收治的子痫前期患者与健康产妇。通过高通量测序检测筛选出子痫前期与正常胎盘组织中lncRNA表达差异最大的lncRNA ENST00000492363。通过qPCR进一步检测两组患者胎盘组织中lncRNA ENST00000492363的表达水平。培养滋养层细胞系JEG3和HTR-8,并构建lncRNA ENST00000492363过表达载体,并分为过表达ENST00000492363组(ENST00000492363组)、空白表达组(NC组)、正常组(control组)。进一步分别通过CCK-8检测、流式细胞术检测、划线实验检测及Transwell实验检测各组中JEG3和HTR-8细胞的增殖水平、凋亡水平、迁移能力及侵袭能力。最后,通过Western blot法检测各组细胞中蛋白质Vimentin、N-cadherin、E-cadherin的表达水平。结果 子痫前期组胎盘组织中ENST00000492363的表达显著低于健康对照组(P<0.05)。JEG3细胞中ENST00000492363的本底表达是HTR-8中的30.69倍。HTR-8或JEG3细胞中ENST00000492363过表达的细胞增殖水平、划线痕迹愈合速度及细胞侵袭能力均显著低于NC及control组(P<0.05),但ENST00000492363过表达的细胞凋亡率显著高于NC及control组(P<0.05)。同时,ENST00000492363过表达可抑制了细胞中Vimentin、N-cadherin的表达,并促进细胞中E-cadherin表达。结论 过表达ENST00000492363的滋养细胞系HTR-8、JEG3会抑制其细胞生长、迁移和侵袭,促进细胞凋亡。     

重组IL-15/Fc融合蛋白治疗EAU的实验研究

目的 探讨重组小鼠IL-15/Fc融合蛋白治疗实验性自身免疫性葡萄膜炎(EAU)的效应和机制.方法 C57小鼠输注IRBPI-20抗原特异性T细胞,构建EAU模型,通过静脉注射重组IL-15/Fc融合蛋白,眼底镜和HE染色评价融合蛋白治疗EAU的疗效.用auto-MACS分离IRBPI-20抗原免疫小鼠T细胞,通过CFSE染色,3HTdR渗入抑制法,流式细胞仪,ELISA法检测IL-15/Fc融合蛋白对IRBPl-20特异性T细胞抗原特异性活化、增殖、分化和分泌炎症细胞因子的作用.结果 IL-15/Fc融合蛋白能有效抑制IRBPI-20特异性CD8 T细胞增殖、扩增、向CD44highCD62Llow效应细胞亚群的分化和分泌炎症性细胞因子.体内应用能有效抑制EAU的临床症状.结论 该重组IL-15/Fc融合蛋白能抑制IRBP1-20特异性CD8 T细胞活化、增殖、分化和分泌炎症性细胞因子,从而抑制EAU的炎症反应.     

沉默lncRNA NEAT1通过抑制NF-κB通路减轻LPS 诱导的支气管上皮细胞炎症反应

目的探究沉默长链非编码RNA(lncRNA)NEAT1对脂多糖(LPS)诱导的人支气管上皮(HBE)细胞(16HBE)炎症反应的影响及机制。 方法16HBE细胞分为Control组、LPS组、LPS+si-NC组和LPS+si-NEAT1组。实时荧光定量PCR检测各组lncRNA NEAT1、白细胞介素(IL)-1β、IL-6及肿瘤坏死因子-α(TNF-α)的mRNA表达水平;MTT法检测细胞增殖活力;流式细胞仪检测细胞凋亡率;Western blotting检测各组炎症因子水平及增殖细胞核抗原(PCNA)、p53、核因子κB抑制蛋白(IκB)α、核因子-κB(NF-κB)p65蛋白表达水平。 结果沉默lncRNA NEAT1后,IL-1β、IL-6、TNF-α及其mRNA表达水平、细胞凋亡率及p53、p-IκBα、p-NF-κB p65蛋白水平均明显降低,细胞增殖活力及PCNA蛋白水平均明显升高(P＜0.05),细胞中p-NF-κB p65相对荧光强度(细胞核/细胞质)降低(P＜0.05)。 结论沉默lncRNA NEAT1表达抑制16HBE细胞炎症反应,其机制可能与抑制NF-κB通路的激活有关。     

CD40-IgG1Fc融合蛋白真核表达载体的构建及表达

目的 构建人CD40-IgG1Fc融合蛋白的真核表达载体CD40-IgG1Fc/pcDNA3.1( ),并在中国仓鼠卵巢细胞(CHO细胞)表达.方法 应用T-A克隆技术和亚克隆技术,构建人CD40膜外段和IgG1Fc段融合蛋白的真核表达载体CD40-IgG1Fc/pcDNA3.1( ),将其转染入CHO细胞株并筛选,进行稳定表达.通过RT-PCR、Western blot法及ELISA法证实融合基因的表达.结果 成功构建真核表达载体CD40-IgG1Fc/pcDNA3.1( ),并建立CHO细胞稳定表达株.Western blot及ELISA法检测到细胞培养上清中有融合蛋白的表达.结论 通过基因工程生产的人CD40-IgG1Fc融合蛋白,能够特异性阻断CD40-CD40L的相互作用.     

人骨髓间充质干细胞成骨分化相关的长链非编码RNA 表达谱特征

目的：观察人骨髓间充质干细胞（hMSCs）成骨分化过程中长链非编码 RNA（lncRNA）的表达谱变化。方法以 hMSCs 及成骨诱导分化7、14、21 d 后的细胞为研究对象,利用 Agilent lncRNA 芯片技术筛选出成骨诱导分化前后2倍变化幅度的差异 lncRNA,并通过实时荧光定量 PCR（RT - PCR）对芯片结果进行验证。选取筛选结果中表达差异较大的 lncRNA 利用 UCSC Genome Browser 并结合芯片筛选结果分析 lncRNA 邻近蛋白编码基因。结果 hMSCs 经成骨诱导分化7、14、21 d 后,均具有成骨细胞特性;芯片筛选结果表明,与成骨诱导分化前的hMSCs 相比,成骨诱导分化7、14、21 d 后持续表达上调超过2倍的 lncRNA 有433条,下调超过2倍的有232条;选取其中部分 lncRNA,RT - PCR 验证与芯片结果相符合;对 lncRNA 邻近蛋白编码基因分析提示某些 lncRNA（如lncRNA ENST00000585537.1和 lncRNA eHIT00001595）可能在 hMSCs 成骨分化过程中发挥重要作用。结论 hM-SCs 成骨诱导分化前后,lncRNA 表达谱发生显著变化,提示差异表达的 lncRNA 可能与 hMSCs 成骨分化密切相关,由此可进一步解释 hMSCs 成骨分化机制。     

人ICOS-Ig融合蛋白的真核表达及其生物学活性

目的:真核表达人ICOS胞外区与IgG Fc融合蛋白,并对其生物学活性进行初步分析。方法:以RT-PCR方法克隆人ICOS胞外区片段和人IgG Fc片段,定向插入真核表达载体pSecTag2,构建重组质粒pSecTag2-ICOS-Ig,脂质体转染CHO细胞,可溶性表达并纯化ICOS-Ig融合蛋白。采用SDS-PAGE、蛋白质印迹、ELISA对融合蛋白进行鉴定,配体结合活性实验和混合淋巴细胞增殖反应实验检测融合蛋白的活性。结果:构建的ICOS-Ig融合蛋白表达载体在CHO细胞中表达ICOS-Ig蛋白。纯化获得的ICOS-Ig可以与配体ICOSL特异性结合,并抑制同种T淋巴细胞增殖反应。结论:成功构建了人ICOS胞外区与人IgG Fc融合蛋白真核表达系统,获得有生物学活性的ICOS-Ig融合蛋白。     

磷酸化NF-κB/RelA在正常人和银屑病患者表皮的差异表达及etanercept治疗后NF-κB下调

Etanercept是一种重组人肿瘤坏死因子(TNF)受体融合蛋白,被FDA批准用于治疗银屑病和关节型银屑病。TNF-α增加了致炎症细胞因子合成,并导致多重信号通路活化,包括细胞核因子(NF-κB)。Rel/N F-κB转录因子在许多细胞活动中起重要作用,包括应激反应、角质形成细胞的增殖和分化。利用特异的磷酸化抗体,作者通过免疫组化法调查了银屑病患者经etanercept治疗后正常皮肤、无破损银屑病皮肤、破损银屑病皮肤中N F-κB/RelA的活性表达。核NF-κB在正常表皮中无活性表达,但在银屑病患者未受累及的表皮中可观察到一个基础水平的活性磷酸化…     

lncRNA ANRIL在银屑病患者病变皮肤组织中的表达及其临床意义

目的评估长链非编码RNA(lncRNA) INK4位点的反义非编码RNA(ANRIL)在银屑病患者病变皮肤组织中的表达水平及其与疾病严重程度和炎症因子的关联。方法连续纳入204例银屑病患者,钻取银屑病病变组织和正常皮肤组织标本,采用荧光定量聚合酶链反应检测病变组织及配对正常皮肤组织的lncRNA ANRIL以及炎症因子的表达量。采用银屑病皮损面积及严重度指数(PASI)评估银屑病的严重程度。结果lncRNA ANRIL在病变皮肤组织中的表达量高于配对正常皮肤组织(P<0.001)。受试者工作特征曲线显示,lncRNA ANRIL表达水平可以较好地区分银屑病病变皮肤组织和配对正常皮肤组织（曲线下面积：0.711,95%CI：0.656～0.766)。患者病变皮肤组织的lncRNA ANRIL表达量与PASI评分正相关(r=0.261,P<0.001)。进一步行多元线性回归分析,结果显示,病变皮肤组织lncRNA ANRIL高表达(P=0.013)、受累体表面积较大(P<0.001)和同时接受局部治疗(P=0.008)是患者较高PASI评分的独立相关因素。此外,病变皮肤组织的lncRNA ANRIL表达量与促炎因子肿瘤坏死因子α(TNF|α)(r=0.248, P<0.001)、白细胞介素|6(IL|6)(r=0.219, P=0.002)和IL|17(r=0.252, P<0.001)的表达水平正相关。结论lncRNA ANRIL在银屑病病变皮肤组织中高表达,且与患者的疾病严重程度和炎症因子水平正相关。     

PCP-2胞外区/Fc融合蛋白的真核表达、纯化及其生物学活性鉴定

目的:构建PCP-2胞外区(PCP-2EC)与人免疫球蛋白IgG Fc融合蛋白表达载体,在哺乳动物细胞中表达并纯化PCP-2EC/Fc蛋白,研究其在神经细胞黏附中发挥的作用.方法:以PBLIISK-PCP-2为模板扩增PCP-2EC片段,定向插入真核表达载体pIGplus;重组质粒分别转染COS-7细胞和293细胞,可溶性表达PCP-2EC/Fc融合蛋白,并通过金葡菌蛋白A特异性纯化;以此融合蛋白作为基质,观察原代培养神经元的黏附情况.结果:成功构建PCP-2EC/Fc融合蛋白表达载体,表达载体的构建与预期设计相符;进一步在哺乳动物细胞中表达并纯化PCP-2EC/Fc蛋白;PCP-2EC/Fc蛋白可以促进原代培养神经元的黏附作用.结论:本研究成功地构建了PCP-2EC/Fc融合蛋白真核表达载体,获得有活性的PCP-2胞外区可溶性分子,初步研究发现其在神经细胞黏附中发挥促进作用,为后续神经及其他领域中的功能研究奠定基础.     

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…     

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.     

Analysis of CK-19,PDX-1,Nestin,Ngn3 in different donor islet purity in rats

Objective: To investigate if there are the CK-19, PDX-1, Nestin, Ngn3 positive cells in the donor islets of different purity in rats. Methods: Thirty male adult SD rats were randomly divided into 3 groups. Islets were isolated using digestion by ductal injection of collagenase. Group Ⅰ (n=10): Separating cell preparations were not purified, Group Ⅱ(n=10): Islet sediment was purified with 25% Ficoll400 ,Group Ⅲ (n=10): Islet sediment was purified with 25% and 11% Ficoll-400. The levels of protein of CK-19, PDX-1, Nestin and Ngn3 were detected by immunohistochemistry and the mRNA of CK-19, PDX-1, Nestin, Ngn3 was amplified by RT-PCR. Results: After two different purification methods applied, three islet preparations of different purities were obtained. The difference of islet purity was significant among various groups (P＜0.05). Compared with group Ⅱ and group Ⅲ,the protein and mRNA of CK-19, PDX-1, Nestin,Ngn3 were both higher in group Ⅰ; group Ⅲ was poorly expressed. Conclusions: The three different islet purity donor islet have different CK-19, PDX-1, Nestin, Ngn3 positive cells within them, indicating that there are some islet stem cells in the purified donor islet.     

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.