唾液腺腺泡细胞癌中NR4A3基因重排及NOR-1蛋白表达分析

目的:探讨NR4A3基因重排和NOR-1蛋白表达在唾液腺腺泡细胞癌中的表达及在鉴别诊断中的价值。方法:收集2020年5月—2024年1月于上海交通大学医学院附属第九人民医院口腔病理科诊断的唾液腺癌119例,包括腺泡细胞癌(acinic cell carcinoma,AciCC)63例,黏液表皮样癌(mucoepidermoid carcinoma,MEC)31例,分泌性癌(secretory carcinoma,SC)25例。分别使用荧光原位杂交和免疫组织化学染色检测NR4A3基因重排和NOR-1蛋白表达情况,采用SPSS 18.0软件包对数据进行统计学分析。结果:AciCC主要发生于大唾液腺。与MEC和SC相比,AciCC好发于女性(P=0.006)。NR4A3基因重排在AciCC、MEC和SC中的阳性率分别为76.2%(48/63)、0%(0/10)和0%(0/7),NOR-1蛋白表达在AciCC、MEC和SC中的阳性率分别为92.1%(58/63)、9.7%(3/31)和0%(0/25),差异具有统计学意义(P<0.001)。单独使用NR4A3基因重排诊断AciCC时,灵敏度和特异度分别为76.2%和100%。单独使用NOR-1蛋白表达诊断AciCC时,灵敏度和特异度分别为92.1%和94.6%。联合使用NR4A3基因重排和NOR-1蛋白表达诊断AciCC时,灵敏度和特异度分别为96.8%和94.6%,曲线下面积为0.896,诊断价值最优。结论:AciCC好发于女性,主要发病部位为大唾液腺。NR4A3基因重排仅见于AciCC中,在诊断工作中具有100%的特异性,但敏感性较低。NOR-1蛋白表达检测具有很好的灵敏度和特异度,可作为鉴别AciCC、MEC和SC的初筛和替代方法。联合使用NR4A3基因重排和NOR-1蛋白表达检测具有最优的诊断价值。

NR4A3/NOR1对涎腺腺泡细胞癌诊断价值的Meta分析

目的:分析和评价NR4A3/NOR1对涎腺腺泡细胞癌(AciCC)的诊断价值。方法:对PubMed和Cochrane图书馆、EMbase数据库、中国知网、维普中文科技期刊数据库(VIP)、中国生物医学文献数据库(CBM)及万方数据库进行了全面的文献检索(检索时间为建库至2024年2月1日),选择符合条件的纳入研究。纳入文献的质量评估由两名评审员使用Review Manager 5.3(Cochrane协作组)独立进行。采用Stata/SE15.1和Meta-Disc1.4软件进行Meta分析。计算合并敏感度、合并特异度、合并阳性似然比、合并阴性似然比和合并诊断比值比(DOR);绘制受试者操作特征汇总曲线(SROC),并计算曲线下面积(AUC)。此外,还进行了Meta回归分析,以确定异质性的来源。采用Deeks漏斗图检验评估发表偏倚。采用双变量混合效应模型对纳入的文献进行敏感性分析。通过似然比矩阵图及验前概率、验后概率评价其临床适用性。结果:共纳入AciCC患者488例,对照1220例。Meta分析结果显示,NR4A3/NOR1诊断AciCC的合并敏感度、特异度和DOR分别为0.95(95%CI 0.92~0.97),0.99(95%CI 0.98~1.00)和7.90(95%CI 6.65~9.15),SROC的AUC为0.99。在敏感度(I 2=42.26%)方面观测到轻微的异质性,亚组分析和Meta回归显示异质性与标本来源、病例数的多少有关。Fagan验前概率为29%,+LR=134,阳性验后概率为98%,-LR=0.05,阴性验后概率为2%。结论:NR4A3/NOR1是诊断AciCC的潜在生物标志物,具有高敏感度和特异度,但应用中还需要参考其他临床指标。

Nr4a3对乳腺癌细胞增殖、凋亡及侵袭的影响

Nr4a3(nuclear receptor subfamily 4 group a member 3)属于核受体亚家族成员,参与细胞增殖、细胞迁移和细胞凋亡的调控。据报道,Nr4a3在多种肿瘤组织中表达下调。为探索Nr4a3在乳腺癌发生、发展中的作用,本文利用公共数据库分析NR4A3在乳腺癌组织中的表达以及与乳腺癌患者总生存率的关系。在4T1细胞系上敲除Nr4a3基因,通过流式细胞术等检测细胞凋亡、细胞周期;CCK-8与集落形成实验检测细胞活力;细胞划痕与侵袭检测细胞迁移与侵袭能力;通过q-PCR检测细胞周期和凋亡基因的表达水平。结果表明:Nr4a3在乳腺癌组织中表达水平显著下调;与乳腺癌患者的总生存率呈正相关关系;Nr4a3敲除后,细胞增殖增强,细胞凋亡减少及细胞迁移能力和侵袭能力增强。本研究揭示了Nr4a3在乳腺癌细胞增殖、凋亡、迁移和侵袭的潜在作用,可能成为乳腺癌潜在的治疗靶点。

Jianpi Gushen Huayu decoction ameliorated diabetic nephropathy through modulating metabolites in kidney,and inhibiting TLR4/NF-κB/NLRP3 and JNK/P38 pathways

BACKGROUND Jianpi Gushen Huayu Decoction(JPGS)has been used to clinically treat diabetic nephropathy(DN)for many years.However,the protective mechanism of JPGS in treating DN remains unclear.AIM To evaluate the therapeutic effects and the possible mechanism of JPGS on DN.METHODS We first evaluated the therapeutic potential of JPGS on a DN mouse model.We then investigated the effect of JPGS on the renal metabolite levels of DN mice using non-targeted metabolomics.Furthermore,we examined the effects of JPGS on c-Jun N-terminal kinase(JNK)/P38-mediated apoptosis and the inflammatory responses mediated by toll-like receptor 4(TLR4)/nuclear factor-kappa B(NF-κB)/NOD-like receptor family pyrin domain containing 3(NLRP3).RESULTS The ameliorative effects of JPGS on DN mice included the alleviation of renal injury and the control of inflammation and oxidative stress.Untargeted metabolomic analysis revealed that JPGS altered the metabolites of the kidneys in DN mice.A total of 51 differential metabolites were screened.Pathway analysis results indicated that nine pathways significantly changed between the control and model groups,while six pathways significantly altered between the model and JPGS groups.Pathways related to cysteine and methionine metabolism;alanine,tryptophan metabolism;aspartate and glutamate metabolism;and riboflavin metabolism were identified as the key pathways through which JPGS affects DN.Further experimental validation showed that JPGS treatment reduced the expression of TLR4/NF-κB/NLRP3 pathways and JNK/P38 pathway-mediated apoptosis related factors.CONCLUSION JPGS could markedly treat mice with streptozotocin(STZ)-induced DN,which is possibly related to the regulation of several metabolic pathways found in kidneys.Furthermore,JPGS could improve kidney inflammatory responses and ameliorate kidney injuries in DN mice via the TLR4/NF-κB/NLRP3 pathway and inhibit JNK/P38 pathwaymediated apoptosis in DN mice.

Branched-chain fatty acids from goat milk alleviate ulcerative colitis via the TLR4/NF-κB/NLRP3 pathway

Branched-chain fatty acids(BCFAs)are new bioactive fatty acids with anti-inflammatory properties.However,the role of BCFAs in alleviating ulcerative colitis has not been clarified.Herein,we evaluated the protective effect of BCFAs from goat milk in mice with colitis induced using dextran sodium sulfate(DSS)and explored the corresponding mechanism.These results show that BCFAs extracted from goat milk can significantly alleviate weight loss in mice,and reduce the disease activity index and the activity of myeloperoxidase while increasing the content of antioxidant enzymes in colon tissue and reducing the oxidation stress response.These data also show that BCFAs can down-regulate the gene and protein expression of the toll-like receptor 4(TLR4)/nuclear factorκB p65(NF-κB p65)/NOD-like receptor thermal protein domain associated protein 3(NLRP3)signaling pathway,and at the same time significantly reduce the expression of pro-inflammatory factors tumor necrosis factorα(TNF-α),interleukin 1β(IL-1β),and IL-18 in colon tissue,and significantly increase the expression of the anti-inflammatory factor IL-10.In conclusion,these results demonstrated that BCFAs in goat milk exerted effects on colitis-related inflammatory cytokines and inhibited inflammation by inducing the TLR4/NF-κB/NLRP3 pathway to alleviate DSS-induced ulcerative colitis.This study provides evidence for the potential of BCFAs as bioactive fatty acids in food products and to ameliorate ulcerative colitis development in mice.

CD4+CD25+Foxp3+Treg在子痫前期患者外周血中表达的意义及与妊娠结局的相关性分析

目的分析CD4+CD25+叉头框蛋白3(Foxp3)+调节性T淋巴细胞(Treg)在子痫前期(PE)患者外周血表达中的意义及与妊娠结局的相关性。方法选取2020年1月~2023年1月收治的112例PE患者为疾病组,另根据年龄、孕周匹配选取健康孕妇60例为健康组。疾病组中根据疾病严重程度分为轻度组与重度组。比较外周血CD4+CD25+Foxp3+Treg水平差异及不良妊娠结局发生率。疾病组根据是否存在妊娠不良结局分为不良组与良好组。对比良好组与不良组患者临床资料。Logistic回归分析影响PE患者不良妊娠结局的因素。Spearman相关性分析法分析CD4+CD25+Foxp3+Treg与不良妊娠结局的相关性。结果疾病组、轻度组、重度组CD4+CD25+Foxp3+Treg百分比均低于健康组,不良妊娠结局发生率均高于健康组(P<0.01)。疾病组、重度组CD4+CD25+Foxp3+Treg百分比均低于轻度组,不良妊娠结局发生率高于轻度组(P<0.01),重度组CD4+CD25+Foxp3+Treg百分比低于疾病组,不良妊娠结局发生率高于疾病组(P<0.01)。不良组的孕前体质量指数(BMI)、24 h尿蛋白定量高于良好组,终止妊娠时间早于良好组,外周血CD4+CD25+Foxp3+Treg百分比均低于良好组,差异有统计学意义(P<0.001);Logistic回归分析显示孕前BMI、终止妊娠时间、24 h尿蛋白定量、外周血CD4+CD25+Foxp3+Treg百分比均是导致不良妊娠结局的独立危险因素(P<0.001)。Spearman相关性分析显示外周血CD4+CD25+Foxp3+Treg水平与不良妊娠结局呈负相关(r=-0.722,P<0.01)。结论PE患者外周血CD4+CD25+Foxp3+Treg表达水平异常低表达,是导致不良妊娠结局发生的独立危险因素,且与不良妊娠结局的发生成负相关。

急性非ST抬高心肌梗死患者外周血CD4^(+)CD25^(+)Foxp3^(+)Treg和IL-27变化的临床意义

目的观察急性非ST抬高心肌梗死患者(Non-STMI)治疗过程中外周血CD4^(+)CD25^(+)T/CD4^(+)T、CD4^(+)CD25highFoxp3^(+)Treg/CD4^(+)CD25high T比例及细胞因子TGF-β1、IL-10、INF-γ、IL-27的浓度变化,阐明Non-STMI患者是否存在调节性T细胞比例及功能异常。方法选取2012年8月至2016年4月入住中山大学附属第一医院急诊病房和CCU的Non-STMI40名,不稳定性心绞痛(UA)患者19名和同龄健康志愿者20名作为对照组(HC)。患者诊断明确后次日清晨和经规范治疗后5~7天,留取空腹外周血标本。流式细胞术检测CD4^(+)CD25^(+)T/CD4^(+)T、CD4^(+)CD25high Foxp3^(+)Treg/CD4^(+)CD25high T细胞。ELISA法检测细胞因子TGF-β1、IL-10、INF-γ和IL-27浓度。结果UA、Non-STMI组CD4^(+)CD25highFoxp3^(+)Treg/CD4^(+)CD25highT比例较HC组减低(P<0.01);Non-STMI明显低于UA组(P<0.05),而治疗后Non-STMI组Foxp3^(+)Treg细胞比例显著升高(P<0.05)。入院时Non-STMI和UA组TGF-β1、IL-10浓度较HC组明显降低(P<0.05),而INF-γ和IL-27浓度明显升高(P<0.05)。治疗后Non-STMI组IL-27迅速下降,而UA组变化不明显。治疗前IL-27浓度与CD4^(+)CD25highFoxp3^(+)Treg/CD4^(+)CD25highT呈线性负相关、与INF-γ浓度呈线性正相关。治疗后只有IL-27和CD4^(+)CD25high Foxp3^(+)Treg/CD4^(+)CD25highT呈线性负相关。结论Non-STMI患者CD4^(+)CD25highFoxp3^(+)Treg比例及功能异常,细胞因子IL-27有助于判断患者的临床疗效。

NR4A3和Pan-TRK免疫组化染色在涎腺腺泡细胞癌与分泌性癌鉴别诊断中的应用

目的:探讨NR4A3、Pan-TRK免疫组化染色在涎腺腺泡细胞癌(acinic cell carcinoma,AciCC)、分泌性癌(secretory carcinoma of salivary gland,SCSG)鉴别诊断中的应用价值。方法:收集2010年03月至2021年01月我院病理科存档的22例AciCC、13例SCSG及132例其它涎腺肿瘤,分别进行NR4A3、Pan-TRK免疫组化染色并分析表达情况。结果:NR4A3免疫组化染色显示AciCC(21/22)阳性,其中17例局灶/弥漫强阳,4例中等阳性,1例阴性。13例SCSG及其它132例涎腺肿瘤均(-)。Pan-TRK免疫组化显示13例SCSG均(+)、22例AciCC均(-)。NR4A3在AciCC中敏感性为95.5%,特异性为100%。结论:NR4A3是AciCC一种新标记物,特别与SCSG的鉴别诊断中,联合使用Pan-TRK,可进一步提高诊断的特异性。

冷冻消融联合养肺方治疗对Lewis肺癌CD4^(+)CD25^(+)Foxp3^(+)Treg的影响及机制

目的 探讨冷冻消融联合养肺方治疗对Lewis肺癌CD4^(+)CD25^(+)Foxp3^(+)Treg细胞影响及机制。方法 构建C57BL/6小鼠肺癌皮下移植瘤模型,随机分为模型组、冷冻消融组、冷冻消融联合养肺方低、中、高剂量组,每组5只。模型组行假手术,在小鼠移植瘤部位切开缝合,其余各组均行双循环冷冻消融术。术后冷冻消融联合养肺方低、中、高剂量组分别给予1.64、3.28、6.56 g/kg养肺方灌胃,模型组、冷冻消融组分别给予等体积的生理盐水灌胃,均1次/d,连续给药14 d。给药期间观察并记录各组小鼠肿瘤体积,末次给药后剥离脾脏和移植瘤,称取瘤体质量并计算抑瘤率;流式细胞术检测脾脏CD4^(+)T、CD4^(+)CD25^(+)Foxp3^(+)T细胞比例;qRT-PCR和Western blot法检测瘤组织中Foxp3表达。结果 各组小鼠肿瘤体积均逐渐增长,增长速度为模型组>冷冻消融组>冷冻消融联合养肺方低剂量组>冷冻消融联合养肺方中剂量组>冷冻消融联合养肺方高剂量组。手术联合药物干预14 d后,与模型组比较,各治疗组肿瘤体积小(P<0.05);与冷冻消融组比较,冷冻消融联合养肺方低、中、高剂量组肿瘤体积小(P<0.01);冷冻消融联合养肺方高剂量组肿瘤体积小于低剂量组(P<0.01)。与模型组比较,冷冻消融联合养肺方低、中、高剂量组瘤体质量小(P<0.05);与冷冻消融组比较,冷冻消融联合养肺方低、中、高剂量组瘤体质量小(P<0.05)。冷冻消融组、冷冻消融联合养肺方低、中、高剂量组抑瘤率逐渐升高。与模型组比较,各治疗组CD4^(+)T细胞比例低(P<0.05),冷冻消融联合养肺方低、中、高剂量组的CD4^(+)CD25^(+)Foxp3^(+)T%细胞比例低(P<0.05);与冷冻消融组比较,冷冻消融联合养肺方高剂量组CD4^(+)T、CD4^(+)CD25^(+)Foxp3^(+)T细胞比例低(P<0.05);冷冻消融联合养肺方低、中、高剂量组CD4^(+)T、CD4^(+)CD25^(+)Foxp3^(+)T细胞比例逐渐降低。与模型组比较,冷冻消融联合养肺方低、中、高剂量组肿瘤组织中Foxp3 mRNA相对表达量和Foxp3蛋白表达均降低(P<0.01);冷冻消融联合养肺方中、高剂量组Foxp3 mRNA相对表达量和Foxp3蛋白表达均低于冷冻消融组(P<0.01)和冷冻消融联合养肺方低剂量组(P<0.05)。结论冷冻消融联合养肺方通过减少Lewis肺癌小鼠脾脏CD4^(+)CD25^(+)Foxp3^(+)Treg细胞比例,下调肿瘤组织中Foxp3表达,发挥抑制Lewis肺癌增殖作用,其机制可能与增强机体抗肿瘤免疫应答,改善肿瘤免疫抑制有关。

Morroniside ameliorates lipopolysaccharide-induced inflammatory damage in iris pigment epithelial cells through inhibition of TLR4/JAK2/STAT3 pathway

AIM:To investigate the effect of morroniside(Mor)on lipopolysaccharide(LPS)-treated iris pigment epithelial cells(IPE).METHODS:IPE cells were induced by LPS and treated with Mor.Cell proliferation was detected by cell counting kit(CCK)-8,apoptosis was detected by flow cytometry,the levels of tumor necrosis factor-α(TNF-α),interleukin(IL)-6,and IL-8 were measured by enzyme-linked immunosorbent assay(ELISA)kits,and the protein expression of TLR4,JAK2,p-JAK2,STAT3,and p-STAT3 was analyzed by Western blotting.In addition,overexpression of TLR4 and Mor treatment of LPS-stimulated IPE cells were also tested for the above indices.RESULTS:Mor effectively promoted the proliferation and inhibited the apoptosis of LPS-treated IPE cells.In addition,Mor significantly reduced the levels of TNF-α,IL-6,and IL-8 and significantly inhibited the expression of TLR4,p-JAK2,and p-STAT3 in LPS-treated IPE cells.The effect of Mor on LPS-treated IPE cells was markedly attenuated after overexpression of TLR4.CONCLUSION:These findings suggest that Mor may ameliorate LPS-induced inflammatory damage and apoptosis in IPE through inhibition of TLR4/JAK2/STAT3 pathway.

Anti-diabetic potential of apigenin,luteolin,and baicalein via partially activating PI3K/Akt/GLUT-4 signaling pathways in insulin-resistant HepG2 cells

Dietary flavonoids are abundant in natural plants and possess multiple pharmacological and nutritional activities.In this study,apigenin,luteolin,and baicalein were chosen to evaluate their anti-diabetic effect in high-glucose and dexamethasone induced insulin-resistant(IR)HepG2 cells.All flavonoids improves the glucose consumption and glycogen synthesis abilities in IR-HepG2 cells via activating glucose transporter protein 4(GLUT4)and phosphor-glycogen synthase kinase(GSK-3β).These fl avonoids signifi cantly inhibited the production of reactive oxygen species(ROS)and advanced glycation end-products(AGEs),which were closely related to the suppression of the phosphorylation form of NF-κB and P65.The expression levels of insulin receptor substrate-1(IRS-1),insulin receptor substrate-2(IRS-2)and phosphatidylinositol 3-kinase(PI3K)/protein kinase B(Akt)pathway in IR-HepG2 cells were all partially activated by the fl avonoids,with variable effects.Furthermore,the intracellular metabolic conditions of the fl avonoids were also evaluated.

To investigate the effect of Shenqi Tiaoshen Formula on CSE induced inflammatory response of MH-S cells based on TLR4/NF-kB/NLRP3 pathway

Objective:To study the effects of Shenqi Tiaoshen Formula(SQTS)on the inflammatory response of MH-S cells induced by cigarette smoking extract(CSE)and its mechanism based on TLR4/NF-kB/NLRP3 pathway.Methods:MH-S cells were used as subjects to evaluate cell viability by CCK-8 method.The levels of TNF-α,IL-1βand IL-6 in the supernatant were detected by ELISA.ROS were detected by DCFH-DA fluorescence probe.Western blotting was used to detect the expression of TLR4/NF-kB/NLRP3 pathway protein,and TAK-242,a TLR4 inhibitor,was used to verify the role of SQTS in the TLR4/NF-kB/NLRP3 pathway.Results:Compared with blank group,the cell survival rate of CSE group was decreased,and the contents of inflammatory cytokines TNF-α,IL-1βand IL-6 were increased(P<0.05),ROS fluorescence expression level was significantly increased(P<0.01),TLR4/NF-kB/NLRP3 pathway protein expression was significantly increased(P<0.05);Compared with CSE group,the survival rate of cells in SQTS groups was increased,and the expression levels of the above indexes were decreased(P<0.05),and TLR4/NF-kB/NLRP3 pathway protein decreased in TAK-242 groups(P<0.05).Conclusion:SQTS can reduce the inflammatory response of MH-S cells induced by CSE by inhibiting TLR4/NF-kB/NLRP3 pathway.

Mechanism of Sanshi decoction inhibits macrophage pyroptosis by inhibiting BRD4/NF-κB/NLRP3 pathway in the treatment of gouty arthritis

Objective:To observe the effect of Sanshi decoction on BRD4/NF-κB/NLRP3 pathwaymediated macrophage pyroptosis,so as to elucidate the molecular mechanism of Sanshi decoction in the treatment of gouty arthritis.Methods:THP-1 was induced into macrophages with foboside and the divided into the control group,model group,low-dose,medium-dose,high-dose group of Sanshi decoction,and BRD4 inhibitor group.Except for the control group,the remaining groups were induced with monosodium urate crystals to construct a gouty arthritis cell model.The activity of macrophages was detected by CCK8,the level of macrophage pyroptosis was detected by flow cytometry,the activity of LDH,the content of IL-1β and IL-18 were detected by enzyme-linked immunosorbent assay,and the expression of related proteins in the BRD4/NF-κB/NLRP3 pathway was detected by Western blot.Results:Compared with the control group,macrophage activity was decreased in the model group,and the level of pyroptosis,LDH activity,contents of IL-1β and IL-18,expression levels of BRD4,p-NF-kB p65,NLRP3,Caspase-1 p20,and IL-1β protein were significantly up-regulated,the differences were statistically significant(P<0.05 and P<0.01).Compared with the model group,macrophage activity was up-regulated in the Sanshi Decoction,and the level of pyroptosis,LDH activity,IL-1β and IL-18 contents,expression levels of BRD4,p-NF-kB p65,NLRP3,Caspase-1 p20,and IL-1β protein were significantly decreased with statistically significant differences(P<0.05 and P<0.01).Conclusion:Sanshi decoction inhibits macrophage pyroptosis by inhibiting BRD4/NF-κB/NLRP3 pathway activation,thus improving the inflammation level of gouty arthritis.

肺癌患者CD4^+ CD25^(high) Foxp3^+调节性T细胞的格局变化及意义

目的:研究肺癌患者外周血(PBMC)及肿瘤浸润淋巴细胞(TIL)中CD4+CD25h ighFoxp3+调节性T细胞(Treg)的比例改变,探讨其在抗肿瘤免疫中的调节作用。方法:分离肺癌患者PBMC及TIL,FACS分析CD4+/CD8+T细胞的比值及CD4+CD25h ighT细胞占CD4+T细胞的比例。Real-tim e PCR检测Treg特异性转录因子Foxp3基因在PBMC及TIL中的表达。结果:肺癌患者PBMC及TIL中CD4+/CD8+比值降低;而CD4+CD25h ighT细胞在CD4+T细胞中所占比例升高;Foxp3基因仅在TIL中高表达,而在PBMC中低或不表达,表明肿瘤局部的CD4+CD25h ighT细胞主要是CD4+CD25h ighFoxp3+Treg。结合临床资料分析显示Treg在肺腺癌比例较高。结论:CD4+CD25h ighFoxp3+Treg在肺癌患者肿瘤浸润淋巴细胞中明显升高,可能与其通过细胞与细胞间接触抑制CD8+T细胞的杀伤效应,最终发挥免疫抑制效应相关。

不同分期老年COPD患者外周血中CD4^＋Foxp3^＋调节性T细胞变化及其与肺功能改变的相关性

目的观察急性期、稳定期老年慢性阻塞性肺病(COPD)患者和健康人外周血中的CD 4+Foxp3+调节性T细胞(Treg细胞)比例变化,分析Treg细胞与各期老年COPD患者肺功能改变的相关性,探讨Treg细胞在老年COPD发生发展中的作用。方法①随机选取2010年2～12月就诊我院呼吸内科的急性期老年COPD患者30例、稳定期老年COPD患者35例,分别设为实验1组和实验2组,选取同期进行社区流行病学调查的健康人25例设为对照组。所有受试者均填写统一的调查问卷,了解他们的一般情况、吸烟史等99个变量,并完善肺功能检查;②各组受试者空腹6 h后于清晨8时肘正中静脉抽取静脉血2 ml,应用细胞内染色的流式细胞术检测各组受试者外周血中Treg细胞;③多组间比较采用单因素方差分析,多组内两两比较采用SNK检验(方差齐)和Games-Howell法(方差不齐),Treg细胞的比例与肺功能关系用Spearman相关分析进行相关性检验。结果①实验1组、实验2组和对照组外周血Treg细胞比例分别为(2.62±0.68)%、(0.86±0.46)%和(1.45±0.70)%,三组结果两两比较差异显著(P<0.05);②实验1组、实验2组和对照组外周血CD4和CD25双阳性细胞比例为(3.90±1.64)%、(3.01±1.40)%和(3.78±1.83)%,三组比较无统计学意义(P>0.05);③外周血Treg细胞比例与第1秒用力呼气容积实测值与预计值比(FEV1%prep)和第1秒用力呼气容积/用力肺活量比(FEV1/FVC)均无相关性(r=-0.158、-0.188,P值分别为0.136、0.076);外周血Treg细胞比例与年龄之间无相关性(r值为0.014,P>0.05)。结论老年COPD患者体内存在免疫功能失调,Treg细胞可能参与了老年COPD的发病和急性加重过程;外周血中的CD 4+Foxp3+Treg细胞的比例与老年COPD患者肺功能无相关性。

Graves病患者^(131)I治疗前后CD4^+CD25^+ Foxp3^+调节性T细胞的变化

目的:通过对Graves病患者131I治疗前后外周血各淋巴细胞亚群和CD4+CD25+ Foxp3+调节性T细胞含量以及相关基因Foxp3mRNA表达水平的测定,探讨131I治疗方法是否可以通过改变调节性T细胞的含量从而改善Graves病患者的免疫功能异常。方法:采集30例Graves病患者131I治疗前及治疗后1个月的外周血,流式细胞仪检测外周血CD3+、CD3+CD4+、CD3+CD8+、CD3-CD19+、CD3-CD16+CD56+淋巴细胞亚群及CD4+CD25+ Foxp3+调节性T细胞的百分率,Real-TimePCR检测外周血单个核细胞Foxp3mRNA的表达水平。结果:和治疗前相比,Graves病患者131I治疗1个月后外周血CD3+CD4+T细胞和CD3-CD19+B细胞百分率都明显减少(P<0.05),CD3-CD16+CD56+NK细胞百分率明显增加(P<0.05),CD3-CD8+T细胞、CD4+CD25+ Foxp3+调节性T细胞百分率和Foxp3mRNA的表达水平无明显变化。结论:131I不能通过增加调节性T细胞的含量而改善Graves病患者的免疫耐受障碍,但可以通过减少CD4+T和B淋巴细胞的含量和增加NK细胞的含量来控制过度的免疫应答。

肺癌和乳腺癌患者外周血中CD4^+CD25^+T细胞及foxp3 mRNA的变化特点及临床意义

目的:探讨肺癌、乳腺癌患者外周血中CD4+CD25+调节性T细胞水平的变化及临床意义。方法:应用流式细胞术检测9例肺癌、9例乳腺癌患者及10例非肿瘤患者外周血单个核细胞(PBMC)中CD4+CD25+T细胞占CD4+T细胞的比例,应用RT-PCR技术检测人外周血PBMCfoxp3基因的表达。结果:流式细胞术检测显示,肺癌及乳腺癌患者外周血PBMC中CD4+CD25+T细胞占CD4+T细胞的比例[(21·30±11·26)%]高于非肿瘤患者[(14·19±8·56)%](P<0·05),肺癌及乳腺癌患者外周血PBMC中foxp3mRNA的表达水平高于非肿瘤患者表达水平(P<0·05),肺癌和乳腺癌患者外周血CD4+CD25+调节性T细胞比例增加。结论:CD4+CD25+调节性T细胞在维持自身免疫稳定的同时对肿瘤免疫具有抑制作用,该细胞群比例的增加可能参与肿瘤的发生。

CD4、CD8、FoxP3在子宫颈癌新辅助化疗前后表达的变化及临床价值

目的:探讨CD4、CD8、FoxP3在子宫颈癌新辅助化疗(NACT)前后表达的变化及临床价值。方法:选择上海交通大学医学院附属仁济医院妇产科2013年10月至2017年9月收治的应用NACT的局部晚期(ⅠB2~ⅡB)子宫颈癌患者NACT前后免疫组化检测CD4+、CD8+及FoxP3表达的变化,并通过计算机软件进行定量分析其与化疗疗效、无病生存期(PFS)、总体生存期(OS)之间的关系。结果:局部晚期子宫颈癌NACT前后CD4、CD8、FoxP3在组织中表达的变化与患者年龄、病灶大小无相关性(P>0. 05),但是CD4、CD8与子宫颈癌FIGO分期呈正相关(P <0. 05),与组织病理学分级呈负相关(P <0. 05)。NACT后CD4、CD8、FoxP3的平均单位面积阳性值较化疗前显著升高(P=0. 016,P=0. 009,P=0. 005);局部晚期子宫颈癌患者NACT疗效与CD4、CD8和FoxP3表达的变化无明显相关性(P>0. 05),但NACT后CD8表达的增加与患者PFS呈正相关(r=0. 309,P=0. 041),而与CD4(P=0. 581)、FoxP3(P=0. 134)无明显关系。患者的OS与CD4、CD8和FoxP3化疗前后表达的变化无明显相关性(P> 0. 05)。结论:局部晚期子宫颈癌NACT后,CD4、CD8、FoxP3表达较NACT前升高,CD4、CD8表达的变化与肿瘤分期、病理分级相关,而且CD8化疗前后的变化可以作为独立的预后指标。

大鼠急性脑缺血后CD4^+CD25^+调节性T细胞、Foxp3表达及其意义

目的动态观察大鼠急性脑缺血后不同时期外周血中CD4+CD25+调节性T细胞和脑组织中Foxp3的表达,探讨其在急性缺血性卒中病理生理演变过程中的作用。方法 48只Wistar大鼠按随机数字表法分为缺血组和假手术组。参考改良的Zea-Longer插线方法将缺血组大鼠制作成右侧大脑中动脉线栓脑缺血动物模型。采用流式细胞术和免疫组化染色检测造模后1、3、7、14 d时大鼠外周血中CD4+CD25+调节性T细胞表达和脑组织中Foxp3表达,同时采用改良NSS神经功能评分观察大鼠行为学变化。结果缺血组和假手术组大鼠神经功能缺损评分在模型制备后逐渐下降(P<0.01)。流式细胞术显示脑缺血后1、3 d时缺血组大鼠外周血中CD4+CD25+调节性T细胞的表达与假手术组比较差异无统计学意义(P>0.05),7、14 d时表达明显高于假手术组(P<0.05),且与大鼠的神经功能评分呈负相关(r=-0.68,P=0.01)。免疫组化显示脑缺血后1 d时缺血组大鼠脑组织中即可观察到Foxp3表达,且主要集中在缺血灶区域,在未缺血侧也可观察到Foxp3表达,但表达量较少,而假手术组脑组织中未见Foxp3表达。结论 CD4+CD25+调节性T细胞参与了大鼠急性脑缺血后炎症免疫反应的发生发展过程,且在脑缺血后1 d时便开始参与脑缺血性损伤的免疫调节,这种免疫调节对脑细胞有着保护作用。

雷帕霉素诱导Balb/c小鼠CD4^+ CD25^+ foxp3^+调节性T细胞增殖

目的探讨雷帕霉素对Balb/c小鼠CD4+ CD25+ foxp3+调节性T细胞的作用。方法取8wk龄的SPF级Balb/c小鼠30只,随机分为两组,实验组每只灌胃雷帕霉素0.4mg.d-1,对照组灌胃每天予等体积无菌水,共3wk。无菌条件下肝素抗凝心脏采血,分离脾脏,制备单细胞悬液。采用流式细胞仪检测小鼠外周血和脾细胞CD4+CD25+T细胞,实时定量PCR检测小鼠脾细胞foxp3 mRNA的表达。结果实验组小鼠外周血和脾细胞中CD4+CD25+T细胞的比例分别为(9.95±4.65)%和(24.13±10.06)%,对照组小鼠外周血和脾细胞中CD4+CD25+T细胞的比例分别为(5.01±1.49)%和(8.48±3.19)%,差异均有显著性(P<0.01)。实验组小鼠脾细胞foxp3 mRNA的表达水平明显高于对照组,是对照组的6.029倍,差异有显著性(P<0.01)。结论雷帕霉素能够明显诱导Balb/c小鼠体内CD4+CD25+T细胞的增殖,并能提高foxp3+ mRNA的表达。