简介：Chemokine12(CXCL12)，也作为stromal知道房间导出factor-1(SDF-1)和CXCchemokine亚科的一个成员，无所不在地在许多纸巾和房间类型被表示。它为transmembraneG联合蛋白质的受体CXCR4和CXCR7与ligand明确地交往。CXCL12/CXCR4轴参加一系列生理、生物化学、病理学的过程，例如发炎和白血球trafficking，导致癌症的骨头疼痛，和postsurgical伤害，并且也是在在肿瘤房间和他们的微型环境之间的cross-talking的一个关键因素。CXCR4的异常overexpression为肿瘤幸存，增长，angiogenesis，homing和转移是批评的。在这评论，我们在癌症，在临床的学习下面的CXCR4禁止者，和自然产品CXCR4对手总结了CXCL12/CXCR4的角色。在结论，发信号的CXCL12/CXCR4为肿瘤开发是重要的并且指向小径可能代表一条有效途径到在癌症治疗开发新奇治疗。

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简介：Amurinemacrophage-likecelllineJ774,acquired,inresponsetoLPS,anabilitytokilltumornecrosisfactor(TNF)-insensitivetargetP815mastocytomacellswhereasanothercellline,P388D1didnot,LPStriggeredsignalingmechanismsbetweenthetwocelllineswerecomparedwithanaimtoinquireaboutthepossiblenatureoftheabove-mentioneddifference,TheresultswhowedthattwocelllinesrespondtoLPS-treatmentbyparallelactivationofbothphospholipasesCandA2(PLCandPLA2)toapproximatelythesameextent.ThemaximumresponseoftothenzymesofJ774cellswasnotedwithin10minthetreatmentwhereasthatofP388D1cellsrequiredmorethan20min,TheotherpropertiesofLPS-responsiveenzymesstudiedweresimilarbetweentwocelllines,includingActivationofPLCandPLA2andPKCinmacrophagesbyLPS.Ca2+augmentationofenzymeactivation,participationofguaninenucleotidebinding(G)proteinsintheinitialactivationpreocesses,andinhibitionofenzymeactivationbythepriortreatmentofcellswithcholeraorpertussistoxinsetc.Moreover,LPS-triggeredactivationofPLCandPLA2wasfoundtobefollowedbytheincreaseofPKCactivitiesinbothcelllines.Inspiteofthesesimilarities.J774cellspossessedbothbasicandacidicformsofPKCactivities,whileP388D1cellsownedonlyPKCofbasicform,Nevertheless,thequestionwhyJ774cellsbutnotP388D1cells,canacquirethetumoricidalactivity,aganistP815,cellsfollowingLPStreatmentrematinstobeanswered.

简介：AIM:ToinvestigatetheroleofRho-associatedproteinkinase(ROCK)inhibitor,Y27632,inmediatingtheproductionofextracellularmatrix(ECM)componentsincludingfibronectin,matrixmetallo-proteinase-2(MMP-2)andtypeIcollagenasinducedbyconnectivetissuegrowthfactor(CTGF)ortransforminggrowthfactor-β(TGF-β)inahumanretinalpigmentepithelialcellline,ARPE-19.METHODS:TheeffectofY27632ontheCTGForTGF-βinducedphenotypeinARPE-19cellswasmeasuredwithimmunocytochemistryasthechangeinF-actin.ARPE-19cellsweretreatedwithCTGF(1,10,100ng/mL)andTGF-β(10ng/mL)inserumfreemedia,andanalyzedforfibronectin,laminin,andMMP-2andtypeIcollagenbyRT-qPCRandimmunocytochemistry.CellswerealsopretreatedwithanROCKinhibitor,Y27632,toanalyzethesignalingcontributingtoECMproduction.·RESULTS:TreatmentofARPE-19cellsinculturewithTGF-βorCTGFinducedanECMchangefromacobblestonemorphologytoamoreelongatedswirlpatternindicatingamesenchymalphenotype.RT-qPCRanalysisanddifferentgeneexpressionanalysisdemonstratedanupregulationinexpressionofgenesassociatedwithcytoskeletalstructureandmotility.CTGForTGF-βsignificantlyincreasedexpressionoffibronectinmRNA(P=0.006,P=0.003respectively),lamininmRNA(P=0.006,P=0.005),MMP-2mRNA(P=0.006,P=0.001),COL1A1mRNA(P=0.001,P=0.001),COL1A2mRNA(P=0.001,P=0.001).PreincubationofARPE-19withY27632(10mmol/L)significantlypreventedCTGForTGF-βinducedfibronectin(P=0.005,P=0.003respectively),MMP-2(P=0.003,P=0.002),COL1A1(P=0.006,P=0.003),andCOL1A2(P=0.006,P=0.004)geneexpression,butnotlaminin(P=0.375,P=0.516).CONCLUSION:OurstudydemonstratedthatbothTGF-βandCTGFupregulatetheexpressionofECMcomponentsincludingfibronectin,laminin,MMP-2andtypeIcollagenbyactivatingtheRhoA/ROCKsignalingpathway.Duringthisprocess,ARPE-19cellswereshowntochangefromanepithelialtoamesenchymalphenotypeinvi

简介：AbstractBackground:Anterior thalamic nuclei (ATN) deep brain stimulation (DBS) is an effective method of controlling epilepsy, especially temporal lobe epilepsy. Mossy fiber sprouting (MFS) plays an indispensable role in the pathogenesis and progression of epilepsy, but the effect of ATN-DBS on MFS in the chronic stage of epilepsy and the potential underlying mechanisms are unknown. This study aimed to investigate the effect of ATN-DBS on MFS, as well as potential signaling pathways by a kainic acid (KA)-induced epileptic model.Methods:Twenty-four rhesus monkeys were randomly assigned to control, epilepsy (EP), EP-sham-DBS, and EP-DBS groups. KA was injected to establish the chronic epileptic model. The left ATN was implanted with a DBS lead and stimulated for 8 weeks. Enzyme-linked immunosorbent assay, Western blotting, and immunofluorescence staining were used to evaluate MFS and levels of potential molecular mediators in the hippocampus. One-way analysis of variance, followed by the Tukey post hoc correction, was used to analyze the statistical significance of differences among multiple groups.Results:ATN-DBS is found to significantly reduce seizure frequency in the chronic stage of epilepsy. The number of ectopic granule cells was reduced in monkeys that received ATN stimulation (P < 0.0001). Levels of 3′,5′-cyclic adenosine monophosphate (cAMP) and protein kinase A (PKA) in the hippocampus, together with Akt phosphorylation, were noticeably reduced in monkeys that received ATN stimulation (P = 0.0030 and P = 0.0001, respectively). ATN-DBS also significantly reduced MFS scores in the hippocampal dentate gyrus and CA3 sub-regions (all P < 0.0001).Conclusion:ATN-DBS is shown to down-regulate the cAMP/PKA signaling pathway and Akt phosphorylation and to reduce the number of ectopic granule cells, which may be associated with the reduced MFS in chronic epilepsy. The study provides further insights into the mechanism by which ATN-DBS reduces epileptic seizures.

简介：摘要目的观察严重烧伤后大鼠骨骼肌功能变化，并探讨Janus激酶/信号转导及转录激活子3（JAK/STAT3）通路抑制剂对骨骼肌功能的影响及可能的机制。方法采用实验研究方法。取120只8周龄雄性Wistar大鼠，按随机数字表法分为假伤组、单纯烧伤组和烧伤+JAK/STAT3抑制剂组，每组40只，后2组大鼠于背部、腹部造成50%体表总面积 Ⅲ度烫伤，假伤组大鼠致假伤。烧伤+JAK/STAT3抑制剂组大鼠腹腔注射JAK/STAT3抑制剂鲁索替尼。伤后0（即刻）、1、4、7、14 d，每组取8只大鼠，采用多通道电生理仪测量脉冲频率20、40、60、80、100、120、140、160 Hz刺激最佳肌肉长度的趾长伸肌产生的比力，测量脉冲频率50 Hz刺激0、10、20、30、60、120、180、240、300 s的最佳肌肉长度的趾长伸肌疲劳期比力，采用紫外分光光度法检测趾长伸肌羰基化合物含量，采用微量法检测趾长伸肌ATP含量。对数据行重复测量方差分析、析因设计方差分析、Bonferroni法、t检验。结果与假伤组比较，单纯烧伤组大鼠伤后0、1、7 d各脉冲频率，伤后4 d除20 Hz外各脉冲频率，伤后14 d于20、40 Hz脉冲频率刺激后趾长伸肌比力均显著下降（P<0.05或P<0.01）。与单纯烧伤组相比，烧伤+JAK/STAT3抑制剂组大鼠伤后1 d除20 Hz外各脉冲频率，伤后4、7、14 d各脉冲频率刺激后趾长伸肌比力显著升高（P<0.05或P<0.01）。与假伤组比较，单纯烧伤组大鼠除伤后7 d刺激240 s外，伤后各时间点刺激各时间点趾长伸肌疲劳期比力显著下降（P<0.05或P<0.01）。与单纯烧伤组比较，烧伤+JAK/STAT3抑制剂组大鼠伤后1 d除刺激60、300 s外各刺激时间点，伤后4 d除刺激240 s外各刺激时间点，伤后7、14 d所有刺激时间点疲劳期比力显著升高（P<0.05或P<0.01）。单纯烧伤组大鼠伤后0、1、4、7、14 d趾长伸肌羰基化合物含量分别为（0.651±0.155）、（0.739±0.194）、（0.618±0.086）、（0.813±0.162）、（0.615±0.115）nmol/mg，明显高于烧伤+JAK/STAT3抑制剂组的（0.538±0.069）、（0.369±0.059）、（0.273±0.061）、（0.334±0.109）、（0.318±0.101）nmol/mg（t=2.446、4.689、8.355、5.754、6.097，P<0.05或P<0.01）和假伤组的（0.196±0.019）、（0.156±0.004）、（0.169±0.023）、（0.156±0.027）、（0.175±0.008）nmol/mg（t=7.219、6.491、10.938、9.182、11.589，P<0.01）。单纯烧伤组大鼠伤后1、4、7、14 d趾长伸肌中ATP含量明显低于假伤组（t=7.159、7.591、7.473、4.026，P<0.01）和烧伤+JAK/STAT3抑制剂组（t=2.295、2.575、2.453、2.997，P<0.05）。结论严重烧伤后大鼠趾长伸肌在不同频率脉冲刺激后比力显著下降，且易于疲劳；阻断JAK/STAT3信号通路可通过降低肌蛋白氧化应激和增加ATP含量，进而减轻烧伤引起的肌力下降，改善其疲劳期肌力下降。

简介：AbstractBackground:Microribose nucleic acids (miRNAs) are implicated in the progression of lung adenocarcinoma. MicroRNA-345-5p (miR-345-5p) is a recently identified anti-oncogene in some human cancers, but its functional role and possible molecular mechanism in lung adenocarcinoma remain unknown. This study aimed to identify the biological function and underlying mechanism of miR-345-5p in lung adenocarcinoma cells.Methods:In this study, lung adenocarcinoma tissues and adjacent tissues were collected in the First Affiliated Hospital of Anhui Medical University between April 2016 and February 2017. The expression of miR-345-5p and ras homolog family member A (RhoA) in lung adenocarcinoma tissues and human lung adenocarcinoma cell lines (A549, H1650, PC-9, and H441) was detected by reverse transcription quantitative polymerase chain reaction analysis. Functional assays including colony formation, flow cytometry analysis, wound healing, and transwell assays were performed to assess the proliferation, apoptosis, migration, and invasion of lung adenocarcinoma cells. In addition, RNA pulldown and luciferase reporter assays were conducted to evaluate the relationship between miR-345-5p and RhoA. Difference between the two groups was analyzed with Student’s t test, while that among multiple groups was analyzed with one-way analysis of variance.Results:MiR-345-5p expression displayed lower level in lung adenocarcinoma tissues (0.241 ± 0.095 vs.1.000 ± 0.233, t = 19.247, P < 0.001) and cell lines (F = 56.992, P < 0.001) than control tissues and cells. Functional experiments demonstrated that upregulation of miR-345-5p inhibited the malignant phenotypes of lung adenocarcinoma cells via suppressing cell proliferation, migration, invasion, and facilitating cell apoptosis. Additionally, RhoA was verified to be the downstream target of miR-345-5p. Expression of RhoA was downregulated by overexpression of miR-345-5p in PC-9 (0.321 ± 0.047 vs. 1.000 ± 0.127, t = 8.536, P < 0.001) and H1650 (0.398 ± 0.054 vs. 1.000 ± 0.156, t = 4.429, P = 0.011) cells. Rescue assays revealed that overexpression of RhoA rescued the suppressive effects of miR-345-5p upregulation on proliferation, migration, and invasion of lung adenocarcinoma cells. Further, miR-345-5p was found to regulate the Rho/Rho-associated protein kinase (ROCK) signaling pathway by downregulation of RhoA in lung adenocarcinoma cells.Conclusions:MiR-345-5p plays a tumor suppressor role in lung adenocarcinoma cells by downregulating RhoA to inactivate the Rho/ROCK pathway.

简介：摘要目的探索Janus激酶3/信号转导和转录激活子5（JAK3/STAT5）信号通路在原发性痛风性关节炎（GA）患者的PBMCs中的表达及临床意义。方法收集50例急性期痛风患者（AG）、50例间歇期痛风患者（IG）及50名健康体检者（HC）的外周血标本、临床资料及实验室检查指标。采用实时荧光定量聚合酶链反应（RT-qPCR）检测JAK3、STAT5a及信号转导及转录激活因子5b（STAT5b）mRNA表达水平；采用ELISA法检测受试者血浆中IL-2浓度。3组间计量资料符合正态分布的采用单因素方差分析，两两比较采用LSD-t检验，非正态分布的采用Mann-Whitney检验或Kruskal-Wallis H检验，变量间相关分析采用Spearman相关分析。结果①JAK3、STAT5a及STAT5b的mRNA表达水平在3组间的差异均有统计学意义（F=50.13，P<0.01；F=7.573，P=0.000 7；F=12.14，P<0.01），其中HC组JAK3 mRNA表达水平[（606±65）×10-4]显著高于AG组[（103±13）×10-4]和IG组[（114±24）×10-4]，差异有统计学意义（P均<0.01），而AG组中STAT5a mRNA表达水平[（89±9）×10-4]明显高于IG组[（59±4）×10-4]和健康体检者组[（61±4）×10-4]，差异有统计学意义（P=0.002，P=0.003 9），同时健康体检者组的STAT5b mRNA表达水平[（60±5）×10-4]明显低于AG组[（95±7）×10-4]和IG组[（98±7）×10-4]，差异有统计学意义（P=0.000 2，P<0.01）。②血浆中IL-2浓度在3组间的差异有统计学意义（F=22.87，P<0.01），AG组患者血清IL-2浓度为[（88±8）pg/ml]显著高于IG组[（32±4）pg/ml]和健康体检者组[（44±4）pg/ml]，差异有统计学意义（P均<0.01）。③ Spearman相关分析显示：在痛风患者中STAT5a、STAT5b的mRNA表达量与中性粒细胞绝对值呈正相关（r=0.282，P<0.05；r=0.257，P<0.05）。结论IL-2/JAK3/STAT5信号通路参与了痛风的发生发展，提示该通路可能是痛风的发病机制之一。

简介：Amurinemacrophage-likecellline,J774,acquried,inresponsetoLPS,anabilitytokilltumornecrosisfactor（TNF）-insensitivetargetP815mastocytomacells,whereasanothercellline,P388D1,didnot.LPS-triggeredsignalingmechanismsbetweenthetwocelllineswerecomparedwithanaimtoinquireaboutthepossiblenatureoftheabove-mentioneddifference.TheresultsshowedthattwocelllinesrespondtoLPS-treatmentbyparallelactivationofbothphospholipasesCandA2（PLCandPLA2）toapproximatelythesameextent.ThemaximumresponseofbothenzymesofJ774cellswasnotedwithin10minofthetreatment,whereasthatofP388D1cellsrequiredmorethan20min.TheotherpropertiesofLPS-responsiveenzymesstudiedweresimilarbetweentwocelllines,ineludingActivationofPLCandPLA2andPKCinmacrophagesbyLPSCa2+augmentationofenzymeactivation,participationofguaninenucleotidebinding（G）proteinsintheinitialactivationprocesses,andinhibitionofenzymeactivationbythepriortreatmentofcellswithcholeraorpartussistoxinsetc.Moreover,LPS-triggeredactivationofPLCandPLA2wasfoundtobefollowedbytheincreaseofPKCactivitiesinbothcelllines.Inspiteofthesesimilarities,J774cellspossessedbothbasicandacidicformsofPKCactivities,whileP388D1cellsownedonlyPKCofbasicform.Nevertheless,thequestionwhyJ774cells,butnotP388D1cells,canacquirethetumoricidalactiyity,aganistP815cellsfollowingLPS-treatmentremainstobeanswered.

简介：AbstractBackground:Sepsis, a serious condition with high mortality, usually causes sepsis associated encephalopathy (SAE) that involves neuronal cell death. However, the cell death programs involved and their underlying mechanisms are not clear. This study aimed to explore the regulatory mechanisms of different cell death programs in SAE.Methods:A neonatal rat model of SAE was established by cecal ligation and perforation. Survival rate and vital signs (mean arterial pressure and heart rate) were monitored, nerve reflexes were evaluated, and cortical pathological changes were observed by hematoxylin and eosin staining. The expression of pyroptosis, apoptosis, and necroptosis (PANoptosis)-related proteins, mitogen-activated protein kinase (MAPK), and its upstream regulator toll-like receptor 9 (TLR9) were detected. The expression of TLR9 in neurons was observed by immunofluorescence staining. The ultrastructure of neurons was observed by transmission electron microscope.Results:First, PANoptosis was found in cortical nerve cells of the SAE rats. Meanwhile, the subunits of MAPKs, p38 MAPK, Jun N-terminal kinase, and extracellular signal-regulated kinase (ERK) were activated. After pharmacologically inhibiting each of the subunits, only p38 MAPK was found to be associated with PANoptosis. Furthermore, blocking the p38 MAPK signaling pathway activated necroptosis but inhibited apoptosis and pyroptosis. When necroptosis was pharmacologically inhibited, apoptosis and pyroptosis were reactivated. Finally, we found that the expression of TLR9, a regulator of MAPKs, was significantly increased in this model. After down-regulation of TLR9, p38 MAPK, and ERK signaling pathways were inhibited, which led to the inhibition of PANoptosis. Further analysis found that down-regulation of TLR9 improved the survival rate and reduced the pathological changes in SAE rats.Conclusions:Our study showed that the programs comprising PANoptosis are activated simultaneously in SAE rats. TLR9 activated PANoptosis through the p38 MAPK signaling pathway. TLR9 may work as a potential target for SAE treatment.

简介：AbstractBackground:MicroRNAs are closely associated with the progression and outcomes of multiple human diseases, including sepsis. In this study, we examined the role of miR-23a in septic injury.MethodsLipopolysaccharide (LPS) was used to induce sepsis in a rat model and H9C2 and HK-2 cells. miR-23a expression was evaluated in rat myocardial and kidney tissues, as well as H9C2 and HK-2 cells. A miR-23a mimic was introduced into cells to identify the role of miR-23a in cell viability, apoptosis, and the secretion of inflammatory cytokines. Furthermore, the effect of Rho-associated kinase 1 (ROCK1), a miR-23a target, on cell damage was evaluated, and molecules involved in the underlying mechanism were identified.Results:In the rat model, miR-23a was poorly expressed in myocardial (sham vs. sepsis 1.00 ± 0.06 vs. 0.27 ± 0.03, P < 0.01) and kidney tissues (sham vs. sepsis 0.27 ± 0.03 vs. 1.00 ± 0.06, P < 0.01). Artificial overexpression of miR-23a resulted in increased proliferative activity (DNA replication rate: Control vs. LPS vs. LPS + Mock vs. LPS + miR-23a: H9C2 cells: 34.13 ± 3.12 vs. 12.94 ± 1.21 vs. 13.31 ± 1.43 vs. 22.94 ± 2.26, P < 0.05; HK-2 cells: 15.17 ± 1.43 vs. 34.52 ± 3.46 vs. 35.19 ± 3.12 vs. 19.87 ± 1.52, P < 0.05), decreased cell apoptosis (Control vs. LPS vs. LPS + Mock vs. LPS + miR-23a: H9C2 cells: 11.39 ± 1.04 vs. 32.57 ± 2.29 vs. 33.08 ± 3.12 vs. 21.63 ± 2.35, P < 0.05; HK-2 cells: 15.17 ± 1.43 vs. 34.52 ± 3.46 vs. 35.19 ± 3.12 vs. 19.87 ± 1.52, P < 0.05), and decreased production of inflammatory cytokines, including interleukin-6 (Control vs. LPS vs. LPS + Mock vs. LPS + miR-23a: H9C2 cells: 59.61 ± 5.14 vs. 113.54 ± 12.30 vs. 116.51 ± 10.69 vs. 87.69 ± 2.97 ng/mL; P < 0.05, F = 12.67, HK-2 cells: 68.12 ± 6.44 vs. 139.65 ± 16.62 vs. 143.51 ± 13.64 vs. 100.82 ± 9.74 ng/mL, P < 0.05, F = 9.83) and tumor necrosis factor-α (Control vs. LPS vs. LPS + Mock vs. LPS + miR-23a: H9C2 cells: 103.20 ± 10.31 vs. 169.67 ± 18.84 vs. 173.61 ± 15.91 vs. 133.36 ± 12.32 ng/mL, P < 0.05, F = 12.67, HK-2 cells: 132.51 ± 13.37 vs. 187.47 ± 16.74 vs. 143.51 ± 13.64 vs. 155.79 ± 15.31 ng/mL, P < 0.05, F = 9.83) in cells. However, ROCK1 was identified as a miR-23a target, and further up-regulation of ROCK1 mitigated the protective function of miR-23a in LPS-treated H9C2 and HK-2 cells. Moreover, ROCK1 suppressed sirtuin-1 (SIRT1) expression to promote the phosphorylation of nuclear factor-kappa B (NF-κB) p65, indicating the possible involvement of this signaling pathway in miR-23a-mediated events.Conclusion:Our results indicate that miR-23a could suppress LPS-induced cell damage and inflammatory cytokine secretion by binding to ROCK1, mediated through the potential participation of the SIRT1/NF-κB signaling pathway.

简介：摘要目的探讨Janus激酶信号转导及转录激活因子(JAK-STAT)信号通路在Neurogin2基因(Ngn2)诱导的神经潜能骨髓间充质干细胞(Ngn2-MSCs)移植治疗大鼠局灶性脑缺血/再灌注(MCAO)损伤中的作用。方法体外培养大鼠MSCs细胞，并将Ngn2基因通过慢病毒转染MSCs细胞；20只SD大鼠按照随机数字表法分为两组，制备大鼠MCAO模型，分别设为Ngn2-MSCs移植组、Ngn2-MSCs+JAK-STAT通路抑制剂(AG490)移植组。干细胞移植后0、12、24、48、60、72、90 h进行神经缺陷症状评分单因素方差分析，蛋白质印迹法(Western blot)检测STAT3及磷酸化STAT3蛋白表达水平，并采用两均数成组设计资料t检验分析。原位缺口末端标记法(TUNEL)法检测脑缺血再灌注区细胞凋亡水平并采用单因素方差分析。结果Ngn2转染MSCs后，Ngn2-MSCs细胞表现出向神经细胞分化的潜能，Western blot检测提示干细胞移植后脑组织JAK-STAT3信号通路12 h开始STAT3蛋白磷酸化激活，48 h达到高峰，90 h后逐渐下降，均高于0 h(12 h：t＝4.780，48 h：t＝6.991，90 h：t＝4.578，P均<0.05)。实验组细胞凋亡数量48 h[(20.5±2.1)个/高倍镜视野]及其他时间点均低于对照组(组间F＝13.372，P<0.05)，神经缺陷评分(2.51±0.16 48 h及之后时间点)均低于对照组(组间F＝6.990，P<0.05)。结论干细胞移植治疗大鼠脑缺损损伤中，JAK-STAT3通路磷酸化激活与神经损伤相关，抑制JAK-STAT3通路磷酸化水平可以降低细胞移植区细胞凋亡水平，提高干细胞移植存活率，从而起到神经保护作用。

简介：目的了解外源性一氧化碳释放分子2（CORM2）对脓毒症时Janus激酶/信号转导和转录激活子（JAK/STAT）信号通路活化的抑制作用.方法将RAW264.7细胞分为正常对照组、LPS（10μg/mLLPS,浓度下同）组、LPS＋无活性CORM-2组、LPS＋小剂量CORM-2（50μmol/LCORM-2）组、LPS＋大剂量CORM-2（100μmol/LCORM-2）组,ELISA法检测细胞上清液中TNF-α的水平及蛋白质印迹法检测JAK1、JAK3分子磷酸化水平.另将35只雄性BALB/c小鼠按随机数字表法分为正常对照组、盲肠结扎和穿孔术（CLP）组、CLP＋无活性CORM-2（8.0mg/Kg）组和CLP＋CORM-2（8.0mg/kg）组.CLP＋CORM-2组除伤后使用CORM-2外,其他处理同CLP组.于伤后24h按上述方法检测小鼠血浆TNF-α、IL-1β的表达水平以及肝组织JAK1、JAK3分子磷酸化水平.对数据行t检验.结果与正常对照组[（1.9±0.3）pg/mL]比较,LPS组细胞的TNF-α水平明显升高[（8.2±2.7）pg/mL,t=2.844,P〈0.01],磷酸化JAK1、JAK3蛋白水平也升高;2种剂量LPS＋CORM-2组细胞的TNF-α,水平分别为（5.7±1.4）、（3.2±0.9）pg/mL,较LPS组明显下降（t值分别为2.104、2.363,P值均小于0.05）,JAK1、JAK3分子的磷酸化水平呈浓度依赖性下降.与正常对照组比较,CLP组血浆TNF-α、IL-1β水平明显升高（t值分别为2.916、2.796,P值均小于0.01）,小鼠肝组织JAK1、JAK3分子的磷酸化水平亦明显升高.CLP＋CORM-2组TNF-α、IL-1β血浆水平显著降低（t值分别为2.115、2.398,P值均小于0.05）,肝组织JAK1、JAK3蛋白的磷酸化得到有效抑制.结论CORM-2能明显抑制JAK分子磷酸化,继而抑制JAK/STAT信号通路的活化,减少下游相关细胞因子的表达,有效防止严重感染时炎症反应的级联反应.

简介：2011年6月18日，由广东省电子学会SMT专委会和四川省电子学会SMT专委会联合组织国内部分SMT业界专家，对上海复蝶智能科技有限公司研发、生产的并具有自主知识产权的Janus系列在线式三维焊膏检测设备进行了技术评审和设备鉴定。

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简介：摘要目的观察Ngn2基因(Ngn2)诱导的神经潜能骨髓间充质干细胞(MSCs)和Janus激酶信号转导及转录激活因子(JAK-STAT)信号通路抑制剂AG490联合移植对大鼠局灶性脑缺血/再灌注损伤的神经保护作用。方法体外培养MSCs(南京医科大学药学院实验室培养)并将Ngn2基因转染MSCs，细胞免疫荧光观察基因转染后神经细胞标记蛋白表达情况。制备大鼠大脑中动脉栓塞(MCAO)模型。100只SD大鼠按照随机数字表达分为5组，分别设为Sham组，1%二甲基亚砜(DMSO)组、AG490组、Ngn2-MSCs+1%DMSO移植组、Ngn2-MSCs+AG490移植组。移植治疗24 h后原位缺口末端标记法(TUNEL)法检测大鼠脑缺血区细胞凋亡水平。分别于3、7、14 d对每组大鼠进行神经缺陷症状评分，14 d后处死动物，氯化三苯四唑(TTC)法染色后计算脑梗死体积，干湿重法称量脑含水量。结果Ngn2转染MSCs后，Ngn2-MSCs细胞表现出向神经细胞分化的潜能，Ngn2-MSCs联合AG490移植治疗组中大鼠脑缺血区细胞凋亡水平(16.2±5.6，F＝197.53，P<0.01)、脑梗死体积[(12.31±6.24)%，F＝35.92，P<0.01]及脑含水量[(77.55±0.53)%，F＝56.18，P<0.01]较其他各组明显降低，神经缺陷评分在移植后7 d较其他各组开始降低(3.31±0.46，F＝14.47，P<0.01)，移植治疗14 d后评分显著较其他组降低(1.63±0.35，F＝22.71，P<0.01)。结论Ngn2-MSCs联合AG490移植疗法对脑缺血再灌注损伤有明显协同神经保护作用。

简介：摘要目的检测IL-2/Janus激酶3（JAK3）/信号转导和转录激活因子（STAT）5信号通路在AS患者外周血中的表达并探讨其在AS发生发展中的作用机制。方法收集30例AS活动期患者（ASA）、30例AS稳定期患者（ASS）和50名健康体检者（HC）的临床资料、外周血标本及实验室检查指标。采用实时荧光定量PCR（RT-qPCR）检测JAK3、STAT5a及STAT5b mRNA表达水平；采用蛋白质印迹法检测JAK3、STAT5a和STAT5b蛋白及磷酸化蛋白表达水平；采用ELISA检测血浆中IL-2浓度。计量资料符合正态分布采用两独立样本t检验或单因素方差分析，3组间两两比较采用LSD-t检验，非正态分布用Mann-Whitney U检验或Kruskal-Wallis H检验，分类变量关联性分析采用χ2检验，变量间相关分析采用Spearman相关分析，采用受试者工作特征（ROC）曲线评估JAK3、STAT5a和STAT5b mRNA表达水平监测AS活动性的价值。结果①JAK3、STAT5a和STAT5b的mRNA表达水平在3组间的差异均有统计学意义（F=65.98，P<0.001；F=21.15，P<0.001；F=13.67，P<0.001），ASA组JAK3 mRNA表达水平（2.5±0.9）明显高于ASS组（1.1±0.4）和健康体检者组（1.0±0.5），差异有统计学意义（P均<0.001），ASA组STAT5a mRNA表达水平（1.4±0.3）明显高于ASS组（0.9±0.3）和健康体检者组（1.0±0.3），差异均有统计学意义（P<0.001），ASA组STAT5b mRNA表达水平（1.5±0.6）明显高于ASS组（1.0±0.4）和健康体检者组（1.0±0.4），差异均有统计学意义（P<0.001），AS患者中HLA-B27阳性组JAK3 mRNA表达水平（1.92±1.01）高于HLA-B27阴性组（1.44±0.60），差异有统计学意义（t=-2.22，P=0.032）。JAK3、STAT5a和STAT5b蛋白磷酸化水平在3组间的差异均有统计学意义（F=91.56，P<0.001；F=25.15，P<0.001；F=178.59，P<0.001），ASA组JAK3蛋白磷酸化水平（1.035±0.076）明显高于ASS组（0.568±0.019）和健康体检者组（0.536±0.064），差异均有统计学意义（P<0.001），ASA组STAT5a蛋白磷酸化水平（1.166±0.096）明显高于ASS组（0.923±0.018）和健康体检者组（0.911±0.017），差异均有统计学意义（P<0.001），ASA组STAT5b蛋白磷酸化水平（0.81±0.05）明显高于ASS组（0.21±0.03）和健康体检者组（0.24±0.07），差异均有统计学意义（P<0.001）。血浆中IL-2浓度在3组间的差异有统计学意义（F=3.32，P=0.040），ASA组患者IL-2浓度[（110±40）pg/ml]明显高于ASS组[（89±40）pg/ml]和健康体检者组[（88±39）pg/ml]，差异有统计学意义（P=0.044，P=0.016）。②Spearman相关分析显示：在AS患者中STAT5a mRNA表达水平与血小板呈正相关（r=0.353，P=0.006）；ASA组JAK3 mRNA表达水平与IL-2浓度呈正相关（r=0.766，P<0.001），与肾小球滤过率估计值呈负相关（r=-0.485，P=0.007），STAT5a mRNA表达水平与ESR呈正相关（r=0.680，P<0.001），STAT5b mRNA表达水平与hs-CRP呈正相关（r=0.823，P<0.001）。③ROC曲线显示：JAK3 mRNA表达水平预测ASA的ROC曲线下面积（AUC）95%CI为0.920（0.853，0.987），灵敏度和特异度分别是86.7%和90.0%；STAT5a mRNA表达水平预测ASA的AUC 95%CI为0.874（0.787，0.961），灵敏度和特异度分别是96.7%和66.7%；STAT5b mRNA表达水平预测ASA的AUC 95%CI为0.749（0.617，0.881），灵敏度和特异度分别是73.3%和80.0%。结论IL-2/JAK3/STAT5可能参与了AS的发病，并且JAK3 mRNA可作为监测AS疾病活动性的生物学指标。

简介：摘要目的观察长链非编码RNA(lncRNA)叉头框蛋白C1(FOXC1)基因启动子上游转录体(FOXCUT)调控JAK信号在乳腺癌细胞增殖、迁移和侵袭中的作用。方法采用实时定量反转录聚合酶链反应(qRT-PCR)检测lncRNA FOXCUT在乳腺癌细胞株(MCF-7和MDA-MB-231)和人正常乳腺上皮细胞(MCF-10A)中的表达。体外干扰lncRNA-FOXCUT在乳腺癌细胞MCF-7中表达，利用细胞计数试剂盒(CCK-8)法、伤口愈合法和细胞侵袭实验检测lncRNA FOXCUT对乳腺癌细胞增殖、迁移和侵袭的影响。同时，用qRT-PCR和蛋白质印迹法(Western blot)检测B细胞淋巴瘤2(bcl-2)、基质金属蛋白酶-9(MMP-9)和Janus激酶1(JAK1)、信号转导和转录激活因子3(STAT3)的表达。多组间比较采用单因素方差分析，两两比较采用SNK-q检验。结果lncRNA FOXCUT在乳腺癌细胞MCF-7(1.567±0.270，t＝5.086，P<0.01)和MDA-MB-231(1.513±0.387，t＝3.533，P<0.01)中表达明显高于MCF-10A细胞(1.004±0.193)，差异有统计学意义。siRNA-FOXCUT组细胞增殖活力明显低于NC组(48 h时0.790±0.068比0.991±0.165，t＝2.516，P<0.05；72 h时0.928±0.135比1.500±0.311，t＝3.775，P<0.01)，差异有统计学意义。同时，siRNA-FOXCUT组MCF-7细胞的迁移率[(30.163±4.133)%比(79.330±4.952)%，t＝13.200，P<0.01]和侵袭[(101.000±13.115)个比(244.667±18.771)个，t＝10.870，P<0.01]能力均低于NC组，差异有统计学意义。siRNA-FOXCUT组细胞中bcl-2(0.565±0.058比1.075±0.242，t＝3.555，P<0.01)和MMP-9(0.527±0.138比0.982±0.172，t＝3.574，P<0.01)在mRNA和蛋白水平均低于NC组，同时p-JAK1(0.185±0.031比1.095±0.134，t＝11.460，P<0.01)和p-STAT3(0.298±0.029比0.948±0.235，t＝4.755，P<0.01)蛋白表达低于NC组，差异有统计学意义。结论lncRNA FOXCUT可能通过JAK1/STAT3途径参与调控乳腺癌的增殖、迁移和侵袭。