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抑制因子,免疫

抑制因子,免疫的相关文献在2001年到2021年内共计62篇,主要集中在肿瘤学、基础医学、外科学 等领域,其中期刊论文62篇、专利文献147450篇;相关期刊33种,包括国际检验医学杂志、国际输血及血液学杂志、医学临床研究等; 抑制因子,免疫的相关文献由243位作者贡献,包括刘豫瑞、张光波、张英起等。

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论文:62 占比:0.04%

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论文:147450 占比:99.96%

总计:147512篇

抑制因子,免疫—发文趋势图

抑制因子,免疫

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  • 刘豫瑞
  • 张光波
  • 张英起
  • 曾达武
  • 毛燕青
  • 潘旭东
  • 王宝利
  • 王翎
  • 邱明才
  • 陈思文
  • 期刊论文
  • 专利文献

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    • 任梅; 陈洁; 马成权
    • 摘要: 目的 探讨小切口腔镜甲状腺切除术治疗分化型甲状腺癌(DTC)的临床效果.方法 选取安徽皖北医院2019年7月至2020年7月收治的63例DTC患者,按手术方案分为两组,33例行完全腔镜甲状腺切除术为对照组,30例行小切口腔镜甲状腺切除术为试验组.比较两组手术及术后恢复情况,术前、术后第1、3天免疫抑制指标(CD3+、CD4+、CD8+、CD4+/CD8+)水平,术前、术后1个月肿瘤指标[血管内皮生长因子(VEGF)、甲状腺球蛋白(Tg)]水平和并发症发生情况.结果 试验组手术时间短于对照组[(87.73±15.35)min比(102.45±20.78) min,t=3.171,P=0.002],术中出血量少于对照组[(20.37±5.26) ml比(44.25±6.39) ml,t=16.099,P<0.001],切口长度、术后住院时间短于对照组[(2.03±0.14) cm比(2.58±0.18) cm,t=13.440,P<0.001;(4.58±1.17)d比(6.02±1.09)d,t=5.057,P<0.001],淋巴结清扫数目多于对照组[(6.20±1.08)个比(532±1.13)个,t=3.869,P<0.001],差异均有统计学意义.与术前比较,术后第1天两组CD3+、CD4+、CD4+/CD8+水平降低,CD;水平升高,但试验组变化幅度较小,且试验组术后第3天即恢复至术前水平(P>0.05).两组术后1个月血清VEGF、Tg低于术前(P<0.05),但组间比较差异无统计学意义(P>0.05).两组并发症发生率比较差异无统计学意义(P>0.05).结论 小切口腔镜甲状腺切除术治疗DTC可达到与完全腔镜甲状腺切除术相同的肿瘤治疗效果,且显著缩短手术时间,减少创伤及术中出血,减轻免疫抑制,有利于患者术后康复.
    • 吴宇平; 张潇宇; 陆克义
    • 摘要: 程序性死亡蛋白-1(PD-1)及其配体(PD-L1)参与免疫检查点调节,与甲状腺癌的发生和发展密切相关.PD-L1在不同类型甲状腺癌中的表达不同,可作为诊断部分肿瘤的生物标志物,PD-L1的表达与更高的肿瘤侵袭性及更高的复发风险相关,PD-1/PD-L1免疫检查点是部分甲状腺癌治疗的一个有前景的靶点.进一步探讨PD-1/PD-L1通路的作用机制、在甲状腺癌中的诊治作用及其与疗效相关的生物标志物,可为甲状腺癌的诊治提供新的思路.
    • 刘玥; 孙宏源; 陈匡
    • 摘要: 近年来,卒中相关性肺炎(SAP)呈现发病率高、上升快的趋势.SAP延长患者住院时间,同时也增加卒中后的死亡率,SAP的有效预防成为新的关注点.目前SAP的发病机制尚未明确,免疫抑制、误吸、吞咽障碍、糖尿病、心房颤动及是否机械通气等都是SAP的危险因素.免疫抑制是其中重要的危险因素,现代研究证实,卒中后急性期内,机体确实发生一系列的免疫抑制状态改变,患者易感性增加.中医学认为脑卒中的发生以“正虚”为因,卒中后仍是“气虚”不能“卫外”,邪袭肺腑,发为SAP.玉屏风散作为扶正固表的代表方剂,现代药理学表明,其具有增强免疫,恢复免疫器官功能的作用.从多角度探讨应用玉屏风散预防SAP的合理性.
    • 卜欣婷; 闫志凌; 张焕新; 徐开林
    • 摘要: T细胞耗竭是慢性感染和肿瘤状态下,T细胞发生的一种功能障碍状态.耗竭性T细胞(Tex)的主要特征是效应功能进行性丧失,多种抑制性受体持续高表达,转录因子表达及细胞内代谢改变等.根据上述特征,可将Tex与效应和记忆T细胞进行区分.Tex对感染和肿瘤的有效控制减弱,导致持续慢性感染和肿瘤的发生.而Tex并非不可逆转,抑制免疫调控靶点可以有效逆转Tex,恢复机体抗肿瘤免疫效应,提高肿瘤控制率.因此,通过逆转肿瘤患者体内的Tex可能是肿瘤免疫治疗的新途径之一.笔者主要探讨T细胞耗竭发生的影响因素、Tex的细胞功能特点及其在临床治疗中的应用等,旨在通过研究逆转Tex,为肿瘤免疫治疗提供新思路.
    • 李晓锋; 汪园园; 刘希
    • 摘要: Objective :To study the mechanism of miR-34a inhibiting breast cancer stem cells by down regula-ting SIRT1 .Methods :The mimics or inhibitors of miR-34a were synthesized by chemical synthesis method ,and the MCF-7 cells were infected with qRT-PCR ,and the expression of miR-34a gene was confirmed by the method of . Lentiviral vector was used as a vector to express the miR-34a gene ,and the cell lines with stable infection were screened out .Design of SIRI1 gene shRNA ,used to interfere with the expression of SIRT 1 in breast cancer MCF-7 cells .Detection of mRNA and protein expression in SIRT 1 by qRT-PCR and Western blotting .Results :No more than the expression level of mimics cells transfected by miR-34a transfected cells miR-34a gene transfected cells ,no less than the expression level of inhibitors cells transfected with miR-34a miR-34a gene ,the difference was statisti-cally significant (P< 0 .05) .LV-miR-34a infected cells can up regulate the expression of miR-34a ,compared with non transfected cells ,the difference was statistically significant (P< 0 .05) .The expression of mRNA and protein in SIRT1 and shRNA-SIRT1-4 group decreased in the shRNA-SIRT1-3 group . Overexpression of miR-34a had no effect on the expression of mRNA in SIRT 1 .miR-34a mimics can inhibit the expression of SIRT 1 protein ,the ex-pression of miR-34a inhibitors is upregulated SIRT 1 protein ,compared with non transfected breast cancer cells of MCF-7 ,the difference was statistically significant (P< 0 .05) .Conclusion :The expression of miR-34a can be regula-ted by the miR-34a mimics and inhibitors ,which can change the expression of SIRT1 protein .%目的:探讨miR-34a通过下调SIRT1抑制乳腺癌干细胞的机制.方法:使用化学合成的方法合成出miR-34a的mimics或者inhibitors,将其感染乳腺癌MCF-7细胞,通过qRT-PCR的方法验证miR-34a的基因表达.以慢病毒作为载体过表达miR-34a的基因,将能够稳定感染的细胞株筛选出来.设计SIRI1基因中的shRNA,用于干扰乳腺癌MCF-7细胞中的SIRT1的表达.使用qRT-PCR方法和Western blotting技术检测SIRT1中mRNA和蛋白的表达.结果:通过miR-34a的mimics转染的细胞的miR-34a的基因表达水平大于没有转染的细胞,通过miR-34a的inhibitors转染的细胞的miR-34a的基因的表达水平小于没有转染的细胞,差异具有统计学意义(P<0.05).LV-miR-34a感染细胞可以上调miR-34a的表达,与没有转染的细胞相比,差异具有统计学意义(P<0.05).shRNA-SIRT1-3组和shRNA-SIRT1-4组中的SIRT1中的mRNA和蛋白的表达出现下降的情况.过表达的miR-34a对SIRT1中的mRNA的表达没有影响.miR-34a的mimics具有抑制SIRT1的蛋白表达的作用,miR-34a的inhibitors具有上调SIRT1的蛋白表达的作用,与没有转染的乳腺癌的MCF-7的细胞相比,差别具有统计学意义(P<0.05).结论:使用miR-34a的模拟物以及抑制物可以调节miR-34a的表达,从而改变SIRT1的蛋白质的表达.
    • 张新羽; 闫会敏
    • 摘要: 髓系抑制性细胞(MDSCs)是备受关注的免疫抑制性细胞,具有调节免疫应答的作用.近年发现MDSCs与肝癌发生发展及预后密切相关,肝癌微环境中多种因子影响MDSCs的扩增、活化和募集,而MDSCs通过下调机体的抗肿瘤免疫应答或诱导免疫耐受形成,促进肿瘤的生长与转移.研究MDSCs在肝癌免疫逃逸的作用,将为肝癌早期发现、诊断及免疫治疗等提供新线索.
    • 杨迪; 苏丽萍
    • 摘要: The immune system plays an important role in the control and elimination of malignant cells.In recent years,immunotherapy for treating tumors has received much attention due to its remarkable effects.There are currently two approaches to lead the field:programmed cell death protein-1/programmed death ligand-1 (PD-1/PD-L1) monoclonal antibody and killer cell immunoglobulin-like receptor (KIR) monoclonal antibody.It has been reported that PD-1/PD-L1 monoclonal antibody can reverse the inhibitory effect of activating T cells to kill tumor cells and thus exert a significant clinical response in patients with hematological tumors.KIR monoclonal antibody enhance the anti-tumor response of natural killer (NK) cells.It is a promising therapeutic strategy to mobilize both T cell and NK cell immune effector cells by PD-1/PD-L1 monoclonal antibody and KIR monoclonal antibody to produce synergistic anti-tumor response.This article intends to review the application of two antibodies in hemotological neoplasms.%免疫系统在控制和消灭恶性细胞中具有重要作用.近年来,由于免疫检查点抑制剂在血液系统肿瘤治疗中取得显著效果,因此被广泛关注.目前,程序性细胞死亡蛋白(PD)-1/程序性死亡配体-1(PD-L1)单克隆抗体和杀伤细胞免疫球蛋白样受体(KIR)单克隆抗体在该方面的研究较为深入.PD-1/PD-L1单克隆抗体能够逆转抑制效应,激活T细胞杀伤肿瘤细胞的活性,从而在治疗血液系统肿瘤患者中发挥显著临床效果,KIR单克隆抗体则可以增强自然杀伤(NK)细胞的抗肿瘤反应.通过PD-1/PD-L1单克隆抗体联合KIR单克隆抗体动员T细胞和NK细胞这2种不同类型的免疫效应细胞,产生协同的抗肿瘤反应,是一种很有前景的血液系统肿瘤的治疗策略.笔者拟就PD-1/PD-L1单克隆抗体联合KIR单克隆抗体在血液系统肿瘤治疗中的应用进行综述.
    • 尹雪娇; 孙春艳; 胡豫
    • 摘要: 多发性骨髓瘤(MM)的发病与骨髓微环境密切相关,但是其具体分子机制迄今尚未阐明.鉴于MM以广泛的免疫抑制、易导致感染和肿瘤进展为特征,而抗MM的新型治疗药物,如硼替佐米、沙利度胺等,均具有免疫调节作用,表明失调的免疫效应细胞在MM中发挥重要作用.外泌体、破骨细胞、髓源性抑制细胞(MDSC)和脂肪细胞均具有免疫调节作用,可参与形成MM的免疫抑制微环境,并且其数量在MM患者体内异常增高,表达水平也与MM分期和临床预后有关.因此,笔者拟就外泌体、脂肪细胞、破骨细胞和MDSC在MM发病中的作用机制,以及将其作为MM治疗靶点的可能性进行综述.%The etiology of multiple myeloma (MM) is closely related to bone marrow microenvironment,whereas the mechanism still remains unknown.In recent years,bone marrow microenvironment has been considered as a promising therapy target,especially focusing on soluble cytokines and angiogenesis.Although some progression has been achieved,drug resistance of MM remains unsolved and MM is still incurable.MM is characterized by general immune suppression which could lead to susceptibility to infection and tumor progression.Studies also show that novel drugs,such as bortezomib and thalidomide are able to regulate the immunne system.Those findings highlight the crucial role of dysregulated immunity cells in MM.Exosomes,osteoclasts,myeloid-derived suppressor cells (MDSC) and adipocytes are all capable of suppressing the immunne system,as well as participating the formation of immunosuppressive microenvironment of MM.The expression level of exosomes,adipocytes and MDSC are elevated in MM patients and might correlate with the progression and prognosis of MM.In this review,we will focus on the role of exosomes,adipocytes,osteoclasts,and MDSC in the progression of MM and their potential as novel therapy targets.
    • 李黎; 吴莹; 包昌倩; 历雪莹; 朱丽霞; 朱晶晶; 叶琇锦
    • 摘要: 目的探讨髓系来源抑制细胞(myeloid-derived suppressor cells,MDSCs)在急性淋巴细胞白血病(acute lymphoblastic leukemia,ALL)不同疾病状态下的数量分布情况,并探讨其在介导ALL肿瘤免疫逃逸过程中的免疫抑制作用。方法通过流式细胞术测定初发未治、治疗后缓解和复发难治ALL患者外周血单个核细胞中MDSCs细胞的比例,并采用定量PCR法检测Foxp3 mRNA的表达水平,以健康人外周血为对照组。分离不同疾病状态ALL患者的MDSCs细胞与健康人T淋巴细胞共培养,观察其抑制T淋巴细胞增殖的情况。结果复发难治组外周血中的MDSCs数量所占比例高于初发未治组、缓解组以及对照组,而初发未治组又高于缓解组以及对照组(均P<0.05)。Foxp3 mRNA水平在复发难治组中最高,其次为初发未治组。患者外周血中MDSCs与健康人T淋巴细胞共培养第5天和第7天时,初发未治组和复发难治组T细胞增殖水平均低于缓解组(均P<0.05)。结论初发和复发ALL患者中存在MDSCs数量扩增,且Foxp3 mRNA表达水平增高。MDSCs可能通过抑制正常T淋巴细胞增殖或诱导调节性T细胞产生介导肿瘤免疫逃逸,从而导致ALL的发生和复发。
    • 陈骏翔; 陈思文; 张光波; 潘旭东; 李洁; 毛燕青; 王翎
    • 摘要: Objective To explore the immune property and possible mechanism of the CD71+ CD235a+ nucleated erythroid cells from peripheral blood in elderly,as compared with those of healthy young.Methods Peripheral blood obtained by venipuncture from healthy young(n=59,mean age=28 years) and elderly(n=78,mean age=68 years)donors were measured by flow cytometry to evaluate the frequency of the CD71+ CD235a+ cells in peripheral blood mononuclear cells (PBMC).In vitro assays,CD71+ CD235a+ cells were sorted by flow cytometry and T cells were sorted using CD4+T cell isolation kit,then the T cell proliferation assays were conducted by following groups:T cell + CFSE group;T cell +CFSE co-cultured with CD71+ CD235a+ cells from the young donors;T cell + CFSE co-cultured with CD71+ CD235a+ cells from the older donors.Real-time PCR were used to identify the expression of the immune cytokine secreted by CD71+ CD235a+ cells.Results (1)the results showed a significant increase in the percentage of CD71+ CD235a+ cells in the elderly compared with the young [(9.93± 2.95)% vs (1.96 ± 1.16)%,t =3.37,P < 0.001];(2)the CD71+ CD235a+ cells from the older donors could suppress the proliferation of the T cells (t =2.91,P< 0.05)while from the young group we could not observe this phenomenon(t =0.387,P>0.05).(3)The results of Real-time PCR revealed that,compared with CD71+ CD235a+ cells from the young,CD71+ CD235a+ cells from the elderly expressed higher levels of Arg-2 (t =9.04,P<0.01),IL-1β,IL-6 and TGF-β(t =4.51,5.46,6.92,all P<0.05).Conclusions There are higher frequencies of CD71+ CD235a+ cells in aged samples than the young.And the CD71+CD235a cells from the elderly could secrete more Arg-2,IL-1β,IL-6 and TGF-β to suppress the T cell proliferation.%目的 探讨老年人CD71+ CD235a+有核红细胞的免疫功能特点及可能涉及的机制.方法 分别取健康老年人及青年人外周血,通过流式细胞仪测定各组CD71+ CD235a+有核红细胞占外周血单个核细胞(PBMC)的比例;通过流式分选法分选获得各组有核红细胞,磁珠分选法获得T细胞,T细胞增殖实验分3组进行:老年组:老年有核红细胞+经羟基荧光素=醋酸盐琥珀酰亚胺脂(CFSE)染色的T细胞;青年组:青年人有核红细胞+经CFSE染色的T细胞;对照组:经CFSE染色的T细胞;实时荧光定量PCR法比较青年组及老年组有核红细胞表达免疫抑制性细胞因子的差异.结果 (1)老年人有核红细胞占PBMC比例高于青年人[(9.93±2.95)%和(1.96±1.16)%,t=3.37,P<0.001];(2)老年组有核红细胞能显著抑制T细胞的增殖(t=2.91,P<0.05),而青年组并没有这一现象(t=0.387,P>0.05);(3)与青年组相比,老年组有核红细胞能分泌更多量的精氨酸酶(Arg)-2(t=9.04,P<0.01)、白细胞介素(IL)-1β、IL-6和转化生长因子(TGF)-β(t=4.51、5.46、6.92,均P<0.05). 结论 老年人外周血有核红细胞占外周血单个核细胞比例较青年人高;老年人外周血有核红细胞可能通过释放更多量的Arg-2,IL-1p,IL-6和TGF-p来抑制T细胞的增殖,从而发挥免疫抑制的作用.
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