期刊文献+
共找到6,318篇文章
< 1 2 250 >
每页显示 20 50 100
Blockade of CD300A enhances the ability of human NK cells to lyse hematologic malignancies
1
作者 Shuangcheng Li Tianci Wang +6 位作者 Xinghui Xiao Xiaodong Zheng Haoyu Sun Rui Sun Hongdi Ma Zhigang Tian Xiaohu Zheng 《Cancer Biology & Medicine》 SCIE CAS CSCD 2024年第4期331-346,共16页
Objective: The human cluster of differentiation(CD)300A, a type-I transmembrane protein with immunoreceptor tyrosine-based inhibitory motifs, was investigated as a potential immune checkpoint for human natural killer(... Objective: The human cluster of differentiation(CD)300A, a type-I transmembrane protein with immunoreceptor tyrosine-based inhibitory motifs, was investigated as a potential immune checkpoint for human natural killer(NK) cells targeting hematologic malignancies(HMs).Methods: We implemented a stimulation system involving the CD300A ligand, phosphatidylserine(PS), exposed to the outer surface of malignant cells. Additionally, we utilized CD300A overexpression, a CD300A blocking system, and a xenotransplantation model to evaluate the impact of CD300A on NK cell efficacy against HMs in in vitro and in vivo settings. Furthermore, we explored the association between CD300A and HM progression in patients.Results: Our findings indicated that PS hampers the function of NK cells. Increased CD300A expression inhibited HM lysis by NK cells. CD300A overexpression shortened the survival of HM-xenografted mice by impairing transplanted NK cells. Blocking PS–CD300A signals with antibodies significantly amplified the expression of lysis function-related proteins and effector cytokines in NK cells, thereby augmenting the ability to lyse HMs. Clinically, heightened CD300A expression correlated with shorter survival and an “exhausted” phenotype of intratumoral NK cells in patients with HMs or solid tumors.Conclusions: These results propose CD300A as a potential target for invigorating NK cell-based treatments against HMs. 展开更多
关键词 nk cell CD300A PHOSPHATIDYLSERINE immune checkpoint hematologic malignancy
下载PDF
Designing a risk prognosis model based on natural killer cell-linked genes to accurately evaluate the prognosis of gastric cancer
2
作者 GAOZHONG LI FUXIN LI +1 位作者 NING WEI QING JIA 《BIOCELL》 SCIE 2023年第9期2081-2099,共19页
Background:This study was aimed at identifying natural killer(NK)cell-related genes to design a risk prognosis model for the accurate evaluation of gastric cancer(GC)prognosis.Methods:We obtained NK cell-related genes... Background:This study was aimed at identifying natural killer(NK)cell-related genes to design a risk prognosis model for the accurate evaluation of gastric cancer(GC)prognosis.Methods:We obtained NK cell-related genes from various databases,followed by Cox regression analysis and molecular typing to identify prognostic genes.Various immune algorithms and enrichment analyses were used to investigate the mutations,immune status,and pathway variations among different genotypes.The key prognostic genes were assessed using the least absolute shrinkage and selection operator(Lasso)regression analysis and univariate Cox regression analysis.Thereafter,the risk score(RS)prognosis model was constructed based on the selected important prognostic genes.A Receiver Operating Characteristics(ROC)curve was plotted for analyzing the robustness of the model.Subsequently,the decision and calibration curves were used for assessing the reliability and prediction accuracy of the proposed model.The‘pRRophetic’R software package was utilized for predicting the half-maximal inhibitory concentration(IC50)of immunotherapy and chemotherapy drugs.Results:We screened 21 prognostic genes and three molecular subtypes and found that the C1 subtype had the worst prognosis.Further,the pathways promoting tumor proliferation,such as epithelial-mesenchymal transition were significantly up-regulated.The results also showed that the macrophages in the M2 stage were significantly infiltrated in the C1 subtype,and there was significant overexpression in the C1 subtype,accompanied by a severe inflammatory reaction.The C1 was highly sensitive to drugs like 5-fluorouracil and paclitaxel.The ROC,calibration curve,and decision curve showed that the risk model was robust and strongly reliable.Conclusion:Overall,our proposed NK cell-related RS model can be used as a more accurate prediction index for GC patients,providing a valuable contribution to personalized medicine. 展开更多
关键词 Natural killer cells Gastric cancer Risk model Molecular typing
下载PDF
鼻型结外NK/T细胞淋巴瘤误诊为鼻窦炎眶周蜂窝织炎1例
3
作者 王明婕 李骋 +1 位作者 孙炎 杨磊 《中国耳鼻咽喉头颈外科》 CSCD 2024年第3期193-194,196,共3页
1临床资料患者,男,34岁,因“鼻堵脓涕1月余伴右眼红肿2周”于门诊就诊。患者1个月前在劳累饮酒后出现双侧持续性鼻堵、黄脓涕,伴双侧额部头痛、右眼眶重度胀痛,需口服止痛药缓解疼痛。2周前右眼疼痛加重,伴视物稍模糊,无复视,伴发热,体... 1临床资料患者,男,34岁,因“鼻堵脓涕1月余伴右眼红肿2周”于门诊就诊。患者1个月前在劳累饮酒后出现双侧持续性鼻堵、黄脓涕,伴双侧额部头痛、右眼眶重度胀痛,需口服止痛药缓解疼痛。2周前右眼疼痛加重,伴视物稍模糊,无复视,伴发热,体温最高38.2℃。门诊初步疑诊“急性鼻窦炎眶周蜂窝织炎”收治入院。发病以来患者神清,精神可,食欲尚可,近6个月体重下降约30斤,夜间睡眠差,伴乏力。 展开更多
关键词 眼眶蜂窝织炎 鼻窦炎 鼻型结外nk/T细胞淋巴瘤
下载PDF
miR-10b介导NKG2D调节脑胶质瘤细胞免疫效应的实验研究
4
作者 袁岗 巨虎 +3 位作者 肖宗宇 李文辉 曹立新 惠超杰 《中国免疫学杂志》 CAS CSCD 北大核心 2024年第3期507-512,共6页
目的:观察微小核糖核酸-10b(miR-10b)对脑胶质瘤细胞免疫效应的调节作用并探讨其作用机制。方法:取人脑胶质瘤细胞U251进行培养和传代,获得处于对数生长期的细胞。按照1.0×105个/ml浓度制备细胞悬液,并设置对照组、过表达组、低表... 目的:观察微小核糖核酸-10b(miR-10b)对脑胶质瘤细胞免疫效应的调节作用并探讨其作用机制。方法:取人脑胶质瘤细胞U251进行培养和传代,获得处于对数生长期的细胞。按照1.0×105个/ml浓度制备细胞悬液,并设置对照组、过表达组、低表达组、空白组,每组6个复孔。对照组、过表达组、低表达组分别采用脂质体转染法转染阴性对照、miR-10b模拟物、miR-10b抑制剂,空白组予以等量无菌生理盐水。分离和培养1例健康志愿者外周血自然杀伤(NK)细胞。MTT法检测不同效靶比时NK细胞的杀伤活性;流式细胞仪检测各组NK细胞表面NK细胞激活受体(NKG2D)表达,并检测各组人脑胶质瘤细胞U251表面主要组织相容性复合物Ⅰ链相关基因A(MICA)、UL16结合蛋白2(ULBP2)、UL16结合蛋白3(ULBP3)表达。结果:对照组、过表达组、低表达组转染效率分别为(93.55±2.05)%、(95.67±3.14)%、(94.18±3.26)%;与对照组和空白组相比,过表达组miR-10b表达升高,低表达组miR-10b表达降低,差异均有统计学意义(P<0.05),且对照组和空白组miR-10b表达差异无统计学意义(P>0.05);与对照组和空白组相比,过表达组NK细胞不同效靶比杀伤活性均降低、NKG2D表达降低,低表达组NK细胞不同效靶比杀伤活性均增高、NKG2D表达增高,差异均有统计学意义(P<0.05),各组NK细胞杀伤活性均随效靶比增加而增高,差异均有统计学意义(P<0.05),且对照组与空白组相比,相同效靶比NK细胞杀伤活性、NKG2D表达差异均无统计学意义(P>0.05);与对照组和空白组相比,过表达组人脑胶质瘤细胞U251表面MICA、ULBP2、ULBP3表达均降低,低表达组人脑胶质瘤细胞U251表面MICA、ULBP2、ULBP3表达均增高,差异均有统计学意义(P<0.05),且对照组与空白组人脑胶质瘤细胞U251表面MICA、ULBP2、ULBP3表达差异均无统计学意义(P>0.05)。结论:抑制miR-10b表达能够增加NK细胞表面NKG2D和人脑胶质瘤细胞U251表面MICA、ULBP2、ULBP3表达,增强NK细胞对人脑胶质瘤细胞U251的杀伤活性。 展开更多
关键词 微小核糖核酸-10b 脑胶质瘤 nk细胞激活受体 主要组织相容性复合物Ⅰ链相关基因A UL16结合蛋白2 UL16结合蛋白3
下载PDF
具NK细胞的溶瘤病毒疗法的模型分析
5
作者 赵艳 邱志鹏 邓齐 《鲁东大学学报(自然科学版)》 2024年第1期66-75,共10页
本文建立了一类包含自然杀伤细胞(NK细胞)免疫反应的肿瘤病毒相互作用模型。首先分析了系统的边界性态,将系统的平衡点进行完整的分类,讨论了边界平衡点的局部稳定性,并从数值上验证了周期解的存在性,最后讨论了NK细胞在病毒治疗中所起... 本文建立了一类包含自然杀伤细胞(NK细胞)免疫反应的肿瘤病毒相互作用模型。首先分析了系统的边界性态,将系统的平衡点进行完整的分类,讨论了边界平衡点的局部稳定性,并从数值上验证了周期解的存在性,最后讨论了NK细胞在病毒治疗中所起到的作用。数值结果表明:a)整体肿瘤大小与病毒感染率成反比,与肿瘤生长速率成正比;b)对于NK细胞相关参数,NK细胞从淋巴结的流入速率越大,最终肿瘤越小;若产生NK细胞增殖,当增殖速率比较小时,相较于无NK增殖时,最终肿瘤变大,即较小的NK细胞增殖对治疗产生负面的影响,但当NK细胞的增殖速率过高时,将会导致肿瘤和病毒的完全清除。 展开更多
关键词 溶瘤病毒 自然杀伤细胞 数学模型 病毒复制
下载PDF
非小细胞肺癌患者血清CA211水平和NK细胞数与预后相关
6
作者 丁飞 王洒 黄常新 《基础医学与临床》 2024年第2期180-184,共5页
目的 探究非小细胞肺癌(NSCLC)患者血清糖类抗原211(CA211)表达水平和自然杀伤(NK)细胞数与预后的相关性。方法 选取杭州师范大学附属医院2019年6月至2022年7月收治的132例NSCLC患者作为实验组,另选取同期收治的132例肺部良性病变患者... 目的 探究非小细胞肺癌(NSCLC)患者血清糖类抗原211(CA211)表达水平和自然杀伤(NK)细胞数与预后的相关性。方法 选取杭州师范大学附属医院2019年6月至2022年7月收治的132例NSCLC患者作为实验组,另选取同期收治的132例肺部良性病变患者作为对照组。从检验科收集数据分析NSCLC患者血清CA211表达水平和NK细胞数与患者预后关系以及影响NSCLC患者预后的相关因素。结果 实验组中性粒细胞/淋巴细胞值(NLR值)和血清CA211表达水平高于对照组(P<0.05),NK细胞数低于对照组(P<0.05);实验组血清CA211表达水平和NK细胞数呈负相关(r=-0.405,P<0.001);不同血清CA211表达水平和NK细胞数的患者淋巴结转移情况以及TNM分期存在显著性差异(P<0.05);CA211低表达者1年生存率高于CA211高表达者(P<0.05),NK细胞高水平者1年生存率高于NK细胞低水平者(P<0.05);淋巴结转移、TNM分期、CA211是影响NSCLC患者预后的危险因素(P<0.05),NK细胞是NSCLC患者预后的保护因素(P<0.05)。结论 NSCLC患者血清CA211表达水平及NK细胞数与临床病理特征及预后有密切联系。 展开更多
关键词 非小细胞肺癌 糖类抗原211 自然杀伤细胞 预后
下载PDF
基于自然杀伤(NK)细胞的肝癌免疫疗法研究进展
7
作者 朱鑫月 周玉付 朱诗国 《细胞与分子免疫学杂志》 CAS CSCD 北大核心 2024年第1期80-88,共9页
肝细胞肝癌(HCC)异质性高,晚期诊断和化疗耐药使其成为我国难治性肿瘤之一。自然杀伤(NK)细胞在机体的免疫监视过程中充当重要角色。但在肝癌的进展过程中,NK细胞的功能受损致肿瘤免疫逃逸。该文总结了HCC中基于NK细胞的不同免疫治疗策... 肝细胞肝癌(HCC)异质性高,晚期诊断和化疗耐药使其成为我国难治性肿瘤之一。自然杀伤(NK)细胞在机体的免疫监视过程中充当重要角色。但在肝癌的进展过程中,NK细胞的功能受损致肿瘤免疫逃逸。该文总结了HCC中基于NK细胞的不同免疫治疗策略,包括直接输注过继性NK细胞免疫疗法、基因工程NK细胞免疫疗法、靶向NK细胞受体免疫疗法、改变免疫抑制微环境免疫疗法、细胞因子增强NK细胞肿瘤毒性免疫疗法以及中医药增强NK细胞肿瘤毒性免疫疗法,这些基于NK细胞的免疫治疗策略已显示出巨大的治疗潜力。 展开更多
关键词 自然杀伤细胞 肝癌 肿瘤逃逸 免疫疗法 综述
下载PDF
Immune evasion and therapeutic opportunities based on natural killer cells
8
作者 Jinjin Zhang Feifei Guo +2 位作者 Lingyu Li Songling Zhang Yufeng Wang 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2023年第3期283-298,共16页
Natural killer(NK)cells can elicit an immune response against malignantly transformed cells without recognizing antigens,and they also exhibit cytotoxic effects and immune surveillance functions in tumor immunotherapy... Natural killer(NK)cells can elicit an immune response against malignantly transformed cells without recognizing antigens,and they also exhibit cytotoxic effects and immune surveillance functions in tumor immunotherapy.Although several studies have shown the promising antitumor effects of NK cells in immunotherapy,their function is often limited in the tumor microenvironment because tumor cells can easily escape NK cell-induced death.Thus,for efficient tumor immunotherapy,the mechanism by which tumor cells escape NK cell-induced cytotoxicity must be fully understood.Various novel molecules and checkpoint receptors that mediate the disruption of NK cells in the tumor microenvironment have been discovered.In this review,we analyze and detail the major activating and inhibitory receptors on the surface of NK cells to delineate the mechanism by which tumor cells suppress NKG2D ligand expression and increase tumor receptor and inhibitory receptor expression[NKG2A,programmed cell death1(PD-1),and T-cell immunoglobulin and immunoreceptor tyrosine inhibitory motif(TIGIT)]on the NK cell surface,and thus inhibit NK cell activity.We also reviewed the current status of treatments based on these surface molecules.By comparing the therapeutic effects related to the treatment status and bypass mechanisms,we attempt to identify optimal single or combined treatments to suggest new treatment strategies for tumor immunotherapy. 展开更多
关键词 Immune evasion natural killer cell nkG2D PD-1 combination therapy
下载PDF
以口腔黏膜溃疡为首发表现的结外鼻型NK/T细胞淋巴瘤的多学科诊疗1例
9
作者 王锋 陈旭亚 +1 位作者 周刚 张静 《口腔医学研究》 CAS CSCD 北大核心 2024年第3期275-278,共4页
结外鼻型NK/T细胞淋巴瘤(extranodal nasal type NK/T-cell lymphoma,ENKTL)是一种以破坏面部中份结构为主的NK/T细胞来源的非霍奇金淋巴瘤,临床少见。以口腔黏膜溃疡为首发症状的病例罕见且易与其他疾病相混淆,在诊断上极其困难。本文... 结外鼻型NK/T细胞淋巴瘤(extranodal nasal type NK/T-cell lymphoma,ENKTL)是一种以破坏面部中份结构为主的NK/T细胞来源的非霍奇金淋巴瘤,临床少见。以口腔黏膜溃疡为首发症状的病例罕见且易与其他疾病相混淆,在诊断上极其困难。本文报道1例以颊黏膜及牙龈溃疡为首发表现的ENKTL的多学科诊疗,并分析该疾病的临床病理学特征、诊断、鉴别诊断和治疗,以期为临床诊治相关病例提供参考。 展开更多
关键词 结外鼻型nk/T细胞淋巴瘤 口腔黏膜溃疡 多学科诊疗
下载PDF
Establishment of a prognostic model related to tregs and natural killer cells infiltration in bladder cancer
10
作者 Yan-Jie Yang Xiao-Qing Xu +2 位作者 Yi-Chao Zhang Peng-Cheng Hu Wu-Xia Yang 《World Journal of Clinical Cases》 SCIE 2023年第15期3444-3456,共13页
BACKGROUND Regulatory T cells(Tregs)and natural killer(NK)cells play an essential role in the development of bladder urothelial carcinoma(BUC).AIM To construct a prognosis-related model to judge the prognosis of patie... BACKGROUND Regulatory T cells(Tregs)and natural killer(NK)cells play an essential role in the development of bladder urothelial carcinoma(BUC).AIM To construct a prognosis-related model to judge the prognosis of patients with bladder cancer,meanwhile,predict the sensitivity of patients to chemotherapy and immunotherapy.METHODS Bladder cancer information data was obtained from The Cancer Genome Atlas and GSE32894.The CIBERSORT was used to calculate the immune score of each sample.Weighted gene co-expression network analysis was used to find genes that will have the same or similar expression patterns.Subsequently,multivariate cox regression and lasso regression was used to further screen prognosis-related genes.The prrophetic package was used to predict phenotype from gene expression data,drug sensitivity of external cell line and predict clinical data.RESULTS The stage and risk scores are independent prognostic factors in patients with BUC.Mutations in FGFR3 lead to an increase in Tregs percolation and affect the prognosis of the tumor,and additionally,EMP1,TCHH and CNTNAP3B in the model are mainly positively correlated with the expression of immune checkpoints,while CMTM8,SORT1 and IQSEC1 are negatively correlated with immune checkpoints and the high-risk group had higher sensitivity to chemotherapy drugs.CONCLUSION Prognosis-related models of bladder tumor patients,based on Treg and NK cell percolation in tumor tissue.In addition to judging the prognosis of patients with bladder cancer,it can also predict the sensitivity of patients to chemotherapy and immunotherapy.At the same time,patients were divided into high and low risk groups based on this model,and differences in genetic mutations were found between the high and low risk groups. 展开更多
关键词 Natural killer cells TREGS Bladder cancer Weighted gene coexpression network analysis Bladder cancer treatment IMMUNOTHERAPY Computational molecular biology
下载PDF
治疗前中性粒细胞淋巴细胞比值和血小板淋巴细胞比值对结外NK/T细胞淋巴瘤的预后价值
11
作者 石淑玲 王颖熠 +3 位作者 吴晶晶 梁天嵩 郑颖娟 杨道科 《现代肿瘤医学》 CAS 2024年第7期1299-1304,共6页
目的:探讨治疗前中性粒细胞淋巴细胞比值(neutrophil-lymphocyte ratio,NLR)和血小板淋巴细胞比值(platelet-lymphocyte ratio,PLR)在结外NK/T细胞淋巴瘤(extranodal natural killer/T-cell lymphoma,ENKTL)患者中的预后价值。方法:回... 目的:探讨治疗前中性粒细胞淋巴细胞比值(neutrophil-lymphocyte ratio,NLR)和血小板淋巴细胞比值(platelet-lymphocyte ratio,PLR)在结外NK/T细胞淋巴瘤(extranodal natural killer/T-cell lymphoma,ENKTL)患者中的预后价值。方法:回顾性分析我院2012年01月至2016年12月新诊断的ENKTL患者的临床资料。根据受试者工作特征(ROC)曲线确定NLR和PLR的最佳截断值并对患者分组。采用卡方检验或Fisher确切概率法比较不同分组间的临床特征和近期疗效差异。我们使用Cox比例风险模型来确定与生存相关的单因素和多因素。生存曲线采用Kaplan-Meier法绘制,它们的差异采用log-rank检验分析。差异具有统计学意义(P<0.05)。结果:NLR和PLR的最佳截断值分别为2.62和228.8。治疗前NLR和PLR与B症状和EBV DNA拷贝数相关(P<0.05)。不同NLR、PLR分组的近期疗效差异无统计学意义(P>0.05)。单因素和多因素分析显示,NLR(P=0.009)、PLR(P=0.008)和LDH(P=0.019)是ENKTL患者OS的独立危险因素。高NLR或高PLR的患者OS率较低(P<0.001)。结论:治疗前NLR和PLR可作为结外NK/T淋巴瘤患者的独立预后因素,高NLR、高NLR提示患者预后不良。 展开更多
关键词 结外nk/T细胞淋巴瘤 中性粒细胞淋巴细胞比值 血小板淋巴细胞比值 预后
下载PDF
NK细胞代谢途径及其功能
12
作者 于雅婷 张建 《中国免疫学杂志》 CAS CSCD 北大核心 2024年第1期21-30,共10页
NK细胞是固有免疫系统的重要成员,在免疫应答中发挥关键作用。NK细胞激活主要依赖于其表面表达的活化性受体和抑制性受体间的动态平衡。然而,在许多慢性疾病模型中,NK细胞受体表达失衡,导致杀伤活性及细胞因子产生能力降低,处于免疫失... NK细胞是固有免疫系统的重要成员,在免疫应答中发挥关键作用。NK细胞激活主要依赖于其表面表达的活化性受体和抑制性受体间的动态平衡。然而,在许多慢性疾病模型中,NK细胞受体表达失衡,导致杀伤活性及细胞因子产生能力降低,处于免疫失活状态。近年许多研究表明,胞内代谢对包括NK细胞在内的免疫细胞至关重要,代谢改变能够通过影响细胞发育、增殖和活性等调节免疫细胞效应功能发挥。鉴于NK细胞强大的抗肿瘤和抗病毒功能及其重要的临床应用价值,深入研究其代谢特征及机制具有重要意义。本文主要从NK细胞的代谢方式及其相关调控通路、代谢对NK细胞发育、记忆和功能的调控作用以及基于代谢的NK细胞疗法进行综述,阐述代谢对NK细胞生物合成、体内稳定及效应功能的重要作用,以及不同慢性疾病模型中NK细胞失活的代谢相关因素,为NK细胞治疗的临床应用提供坚实的研究依据。 展开更多
关键词 nk细胞 免疫失活 代谢 细胞治疗
下载PDF
Effect of anti-asthma Chinese medicine Chuankezhi on the anti-tumor activity of cytokine-induced killer cells 被引量:5
13
作者 Jing-Jing Zhao Ke Pan +5 位作者 Qi-Jing Wang Zheng-Di Xu De-Sheng Weng Jian-Jun Li Yong-Qiang Li Jian-Chuan Xia 《Chinese Journal of Cancer》 SCIE CAS CSCD 2013年第10期553-560,共8页
Chuankezhi(CKZ),a new Chinese medicine,plays an important role in immunoregulation.Cytokineinduced killer(CIK)cells have been commonly used for immunotherapy in recent years.In this study,we aimed to investigate the i... Chuankezhi(CKZ),a new Chinese medicine,plays an important role in immunoregulation.Cytokineinduced killer(CIK)cells have been commonly used for immunotherapy in recent years.In this study,we aimed to investigate the immunoregulatory effect of CKZ on CIK cells.Peripheral blood monocytes were isolated from healthy donors,and CIK cells were generated by culturing monocytes with interferon-gamma(IFN-γ)and interleukin 2.Different concentrations of CKZ were added on day 2.After incubation for 14days in culture,the antitumor effects of CIK cells were measured by cytotoxicity assay.Flow cytometry was used to explore the effect of CKZ on CIK cell immunophenotype,intracellular cytokine production,and apoptosis.The effect of CKZ on the antitumor activity of CIK cells in nude mice was also investigated.CKZ increased the percentage of CD3+CD56+CIK cells but did not significantly change the percentage of CD4+,CD8+,or CD4+CD25+CIK cells.CKZ-conditioned CIK cells showed a greater ability to kill tumor cells,as well as a higher frequency of IFN-γand TNF-αproduction,compared with the CIK cells in the control group.CKZ also suppressed the apoptosis of CIK cells in vitro.Furthermore,CKZ combined with CIK cells had a stronger suppressive effect on tumor growth in vivo than the CIK,CKZ,or normal saline control groups.Our results indicate that CKZ enhances the antitumor activity of CIK cells and is a potential medicine for tumor immunotherapy. 展开更多
关键词 抗肿瘤活性 杀伤细胞 中国医药 细胞因子 外周血单核细胞 抗哮喘 免疫调节作用 IFN-γ
下载PDF
参附汤联合同种异体NK细胞促进移植小鼠造血恢复的实验研究
14
作者 吴顺杰 杨巧红 +5 位作者 聂毅翔 汪显超 李亚丽 李海珍 刘盛 许晓军 《中华中医药学刊》 CAS 北大核心 2024年第1期1-4,I0001,共5页
目的观察参附汤联合同种异体NK细胞(alloreactive naturall killer cells,alloNK)对移植小鼠术后外周血象、骨髓有核细胞计数(nucleated cell counts,NCC)、骨髓造血组织容量(hematopoietic volume of bone marrow,HV)及骨髓病理的影响... 目的观察参附汤联合同种异体NK细胞(alloreactive naturall killer cells,alloNK)对移植小鼠术后外周血象、骨髓有核细胞计数(nucleated cell counts,NCC)、骨髓造血组织容量(hematopoietic volume of bone marrow,HV)及骨髓病理的影响。方法BALB/c小鼠经过13.0 Gy剂量的全身照射(total body irradiation,TBI),4 h内经尾静脉注入供鼠骨髓单个核细胞(mononuclear cells,MNCs)8×10^(6)/kg,制作移植小鼠模型,然后随机分为模型组、alloNK组、参附汤组、参附+alloNK组4组,分别给予生理盐水、单用alloNK、单用参附汤和参附汤联合alloNK灌胃,观察治疗前及治疗后第7、14、30天,小鼠外周血象、骨髓NCC、HV及组织病理的变化。结果移植前及移植后第7天各组小鼠外周血象、骨髓NCC、HV无显著性差异。移植后第14天,模型组小鼠白细胞仍处于粒缺期,而单纯alloNK组和参附组小鼠的白细胞均有所上升,参附联合alloNK组小鼠上升幅度高于其他组。移植后第30天,模型组、alloNK组及参附组小鼠白细胞、骨髓NCC、HV均较前回升,但仍低于移植前水平,而参附联合alloNK组小鼠的白细胞、骨髓NCC、HV恢复至移植前水平,与其他组相比差异显著。结论参附汤可保护骨髓免受放射损伤、促进造血功能恢复、缩短粒细胞缺乏时间,而联合alloNK细胞促进造血功能恢复的作用更明显。 展开更多
关键词 异基因造血干细胞移植 参附汤 同种异体nk细胞 造血功能
下载PDF
Diffuse large B-cell lymphoma successfully treated with amplified natural killer therapy alone: A case report
15
作者 Kenjiro Nagai Syo Nagai +1 位作者 Yuji Okubo Keisuke Teshigawara 《World Journal of Clinical Cases》 SCIE 2023年第30期7432-7439,共8页
BACKGROUND The prognosis of patients with advanced diffuse large B-cell lymphoma(DLBCL)is poor,with a 5-year survival rate of approximately 50%.The mainstay of treatment is multidrug combination chemotherapy,which has... BACKGROUND The prognosis of patients with advanced diffuse large B-cell lymphoma(DLBCL)is poor,with a 5-year survival rate of approximately 50%.The mainstay of treatment is multidrug combination chemotherapy,which has been associated with serious side effects.Amplified natural killer(ANK)cell therapy amplifies and activates natural killer(NK)cells to attack only malignant tumors.As ANK cells attack programmed death ligand 1(PD-L1)-positive tumor cells,ANK therapy is considered effective against adult T-cell lymphoma and malignant lymphoma.CASE SUMMARY Herein,we report a case of an older patient with advanced DLBCL who was successfully treated with ANK immunotherapy.A 91-year-old female visited our hospital with sudden swelling of the right axillary lymph node in April 2022.The patient was diagnosed with stage II disease,given the absence of splenic involvement or contralateral lymphadenopathy.ANK therapy was administered.Six rounds of lymphocyte sampling were performed on July 28,2022.To reduce the occurrence of side effects,the six samples were diluted by half to obtain 12 samples.Cultured NK cells were administered twice weekly.The treatment efficacy was evaluated by performing computed tomography and serological tests every 1 or 2 mo.The treatment suppressed lesion growth,and the antitumor effect persisted for several months.The patient experienced mild side effects.PD-L1 immunostaining was positive,indicating that the treatment was highly effective.CONCLUSION ANK therapy can be used as a first-line treatment for malignant lymphoma;the PD-L1 positivity rate can predict treatment efficacy. 展开更多
关键词 Diffuse large B-cell lymphoma Natural killer cells IMMUNOSTAINING Hodgkin's lymphoma Older adult Case report
下载PDF
Relation between Neurotransmitters and NK Cells in Adrenal and Breast Cancer
16
作者 Ayriana Safari Baesmat 《Advances in Breast Cancer Research》 2023年第4期115-128,共14页
Purpose: Data on microarray gene expression The Gene Expression Omnibus (GEO) provided information on gene expression. Transcription GEO provided two profiles of human NK cells from breast and adrenal tumors (GSE17950... Purpose: Data on microarray gene expression The Gene Expression Omnibus (GEO) provided information on gene expression. Transcription GEO provided two profiles of human NK cells from breast and adrenal tumors (GSE179509 and GSE143383). Data processing and normalization The Dseq2 tool in the R programming language was used to standardize the raw data from GEO. The following analyses were carried out: fold change and P-value analysis, volcano plot, network analysis, GEPIA, and David pathway analysis. In this paper, using Venny software, we discovered 2 genes that are shared by neurotransmitters and NK cells in breast cancer and adrenal cancer. Between these genes and the pathways, they are a part of, we discovered a network. Pathway analysis revealed that these genes are mostly linked to the neurotransmitter and apoptotic pathways. In breast and adrenal tumors, the genes HRH1 and GABRD were discovered to be connected to NK cells. In response to breast and adrenal tumors, almost all of these genes are effective. It is thus postulated that the diagnosis of breast and adrenal cancer may be affected by the up-or down-regulation of these genes. Methods: Microarray gene expression data gene expression data was obtained from the Gene Expression Omnibus (GEO) Transcription 2 profile data of human NK cells from human breast and adrenal cancers were obtained from GEO (GSE179509 and GSE143383). Processing and normalization of data the raw data from GEO were normalized with the Dseq2 package in the R software. Fold change and P value analysis, Volcano plot, network analysis, GEPIA, and David pathway analysis were performed. Results: In this article, we found genes common to neurotransmitters with NK cells in adrenal cancer and breast cancer with Venny program, resulting in 2 genes. We identified a network between these genes and pathways they belong to. Pathway analysis showed that these genes are mostly associated with apoptosis and neurotransmitters pathway. Conclusion: HRH1 and GABRD genes were found to be associated with NK cells in breast and adrenal cancers. Almost all these genes are effective in response to breast and adrenal cancers. Therefore, it is hypothesized that downregulation or upregulation of these genes may affect breast and adrenal cancer diagnosis. 展开更多
关键词 nk cells Breast Cancer Adrenal Cancer
下载PDF
NKG2A-HLA-E轴介导NK细胞应答在病毒感染性疾病中的作用及机制研究进展
17
作者 薛鳗玲 许晓悦 +8 位作者 张希越 唐康 张宇丝 张春梅 庄然 金伯泉 张赟 岳昌武 马樱 《细胞与分子免疫学杂志》 CAS CSCD 北大核心 2024年第3期273-278,共6页
自然杀伤(NK)细胞主要通过迅速释放细胞毒性介质以及细胞因子直接杀伤病毒感染的靶细胞。NK细胞表面抑制性和活化性受体的平衡以及靶细胞上相应配体的表达均参与调控NK细胞的杀伤功能。其中NK细胞2组成员A(NKG2A)是NK细胞上备受关注的... 自然杀伤(NK)细胞主要通过迅速释放细胞毒性介质以及细胞因子直接杀伤病毒感染的靶细胞。NK细胞表面抑制性和活化性受体的平衡以及靶细胞上相应配体的表达均参与调控NK细胞的杀伤功能。其中NK细胞2组成员A(NKG2A)是NK细胞上备受关注的抑制性受体之一,通过与其配体人类白细胞抗原E(HLA-E)的相互作用,可抑制NK细胞对自身正常组织细胞的杀伤活性。研究发现病毒感染细胞表面HLA-E表达上调,并且可与病毒蛋白来源的多肽结合形成复合物,通过与NKG2A的相互作用调控NK细胞功能,从而参与病毒感染性疾病发病过程。本文总结了NKG2A与HLA-E分子互作特点,以及NKG2A-HLA-E轴参与调控NK细胞的功能机制,有助于了解NK细胞在病毒感染性疾病中的重要作用。 展开更多
关键词 自然杀伤细胞2组成员A(nkG2A) 人类白细胞抗原E(HLA-E) 自然杀伤(nk)细胞 病毒感染性疾病 综述
下载PDF
NK细胞疗法在多发性骨髓瘤治疗中的研究进展
18
作者 韩帆 席亚明 《中国实验血液学杂志》 CSCD 北大核心 2024年第1期297-301,共5页
多发性骨髓瘤(MM)是以骨髓中单克隆浆细胞的恶性增殖为特征的血液系统肿瘤。NK细胞是一类具有强大自然杀伤活性的先天性淋巴细胞,能够识别并消灭肿瘤细胞和病毒感染细胞,其作为潜在的抗癌疗法引起关注。在MM患者中,NK细胞的数量和功能... 多发性骨髓瘤(MM)是以骨髓中单克隆浆细胞的恶性增殖为特征的血液系统肿瘤。NK细胞是一类具有强大自然杀伤活性的先天性淋巴细胞,能够识别并消灭肿瘤细胞和病毒感染细胞,其作为潜在的抗癌疗法引起关注。在MM患者中,NK细胞的数量和功能均受到抑制,导致对骨髓瘤细胞的免疫监视和清除能力降低。恢复或增强NK细胞对骨髓瘤细胞的杀伤作用是MM免疫治疗的一个重要策略,目前针对NK细胞相关治疗在临床试验中取得了一定进展。本文对NK细胞在MM免疫治疗中应用前景的最新研究进展作一综述。 展开更多
关键词 多发性骨髓瘤 造血微环境 nk细胞 治疗进展
下载PDF
外周T细胞淋巴瘤和结外NK/T细胞淋巴瘤研究进展
19
作者 李静 李志铭 《肿瘤药学》 CAS 2024年第1期16-21,共6页
近年来,得益于新型药物的快速发展,外周T细胞淋巴瘤和结外NK/T细胞淋巴瘤作为中国发病率相对较高的淋巴瘤亚型,相关研究进展备受该领域学者的关注。本文主要对2023年美国临床肿瘤学会(ASCO)、欧洲血液学协会(EHA)年会报道的外周T细胞淋... 近年来,得益于新型药物的快速发展,外周T细胞淋巴瘤和结外NK/T细胞淋巴瘤作为中国发病率相对较高的淋巴瘤亚型,相关研究进展备受该领域学者的关注。本文主要对2023年美国临床肿瘤学会(ASCO)、欧洲血液学协会(EHA)年会报道的外周T细胞淋巴瘤和结外NK/T细胞淋巴瘤的研究进展及其对临床实践的重要意义进行综述。 展开更多
关键词 外周T细胞淋巴瘤 结外nk/T细胞淋巴瘤 研究进展
下载PDF
结外NK/T细胞淋巴瘤伴B淋巴细胞增生2例的临床病理学研究
20
作者 范玲 李文生 《现代检验医学杂志》 CAS 2024年第2期108-112,共5页
目的探讨结外NK/T细胞淋巴瘤(extranodal NK/T cell lymphoma,ENKTL)伴B淋巴细胞增生病例的临床病理学特征。方法收集陕西省人民医院2023年6~9月确诊的2例ENKTL伴B淋巴细胞增生病例,采用HE染色、免疫组织化学和原位杂交EB病毒编码的小RN... 目的探讨结外NK/T细胞淋巴瘤(extranodal NK/T cell lymphoma,ENKTL)伴B淋巴细胞增生病例的临床病理学特征。方法收集陕西省人民医院2023年6~9月确诊的2例ENKTL伴B淋巴细胞增生病例,采用HE染色、免疫组织化学和原位杂交EB病毒编码的小RNA(Epstein-barr virus encoded small RNA,EBER)检测,观察其组织学特征、免疫表型及原位杂交EBER检测结果,并进行相关文献复习。结果2例老年男性患者,病变部位均为右侧鼻腔,组织学特征为肿瘤细胞弥漫分布,细胞大中小不等,以中大细胞为主,胞核不规则,胞质淡染或透明,核椭圆形,染色质呈颗粒状,核仁不明显,核分裂象较多见,凝固性坏死及凋亡明显;背景见小淋巴细胞灶状聚集,淋巴滤泡散在分布。免疫组织化学CD2,CD3,CD56,TIA-1和颗粒酶B(GrB)阳性表达;CD20,CD79a和PAX-5局灶阳性表达;CD21,CD23及CD35见残存FDC网;CD5阴性表达;Ki-67增殖指数约30%。原位杂交检测EBER肿瘤细胞阳性。病理诊断:ENKTL伴B淋巴细胞增生。结论结外NK/T细胞淋巴瘤伴B淋巴细胞增生少见,尤其是B淋巴细胞增生形成淋巴滤泡时,经验不足很容易造成诊断困扰,需结合临床表现、组织学形态、免疫表型综合分析和诊断。 展开更多
关键词 结外nk/T细胞淋巴瘤 B淋巴细胞增生 反应性增生
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部