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Stem cell-like memory T cells:Role in viral infections and autoimmunity
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作者 Meenakshi Sachdeva Shivangi Taneja Naresh Sachdeva 《World Journal of Immunology》 2023年第2期11-22,共12页
Stem cell-like memory T(TSCM)cells possess stem cell properties including multipotency and self-renewal and are being recognized as emerging players in various human diseases.Advanced technologies such as multiparamet... Stem cell-like memory T(TSCM)cells possess stem cell properties including multipotency and self-renewal and are being recognized as emerging players in various human diseases.Advanced technologies such as multiparametric flowcytometry and single cell sequencing have enabled their identification and molecular characterization.In case of chronic viral diseases such as human immunodeficiency virus-1,CD4+T_(SCM) cells,serve as major reservoirs of the latent virus.However,during immune activation and functional exhaustion of effector T cells,these cells also possess the potential to replenish the pool of functional effector cells to curtail the infection.More recently,these cells are speculated to play important role in protective immunity following acute viral infections such as coronavirus disease 2019 and might be amenable for therapeutics by ex vivo expansion.Similarly,studies are also investigating their pathological role in driving autoimmune responses.However,there are several gaps in the understanding of the role of T_(SCM) cells in viral and autoimmune diseases to make them potential therapeutic targets.In this minireview,we have attempted an updated compilation of the dyadic role of these complex T_(SCM) cells during such human diseases along with their biology and transcriptional programs. 展开更多
关键词 Stem cell-like memory T cells Viral infections Autoimmune diseases Effector T cells Memory T cells
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S100 protein expression during induced Schwann cell-like cell differentiation of rat bone marrow mesenchymal cells in vitro 被引量:1
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作者 Wenting Li Zenglu Xu +1 位作者 Fei Ding Xiaosong Gu 《Neural Regeneration Research》 SCIE CAS CSCD 2010年第3期178-184,共7页
BACKGROUND: S100 protein can promote axonal growth. Therefore, transplantation of induced bone marrow-derived mesenchymal stem cells (MSCs) that can secrete S100 may provide a beneficial microenvironment for neural... BACKGROUND: S100 protein can promote axonal growth. Therefore, transplantation of induced bone marrow-derived mesenchymal stem cells (MSCs) that can secrete S100 may provide a beneficial microenvironment for neural regeneration. OBJECTIVE: To explore the changes in S100 expression during rat MSCs differentiation into Schwann ceils in vitro. DESIGN, TIME AND SETTING: This cytology experiment was performed at the Jiangsu Key Laboratory of Neuroregeneration, Nantong University in China, from January 2006 to May 2007. MATERIALS: The rabbit anti-S100 polyclonal antibody was purchased from Dako, Denmark; the mouse anti-rat S100 monoclonal antibody was purchased from Sigma, USA. METHODS: MSCs were cultured from adult Sprague-Dawley rat femur and tibia. Cell proliferation was determined by the MTT method and CD markers, and cell cycle was measured by flow cytometry. MSCs were induced to differentiate into SC cells. SC cells were stained for S100 protein, glial fibrillary acidic protein, and low-affinity nerve growth factor receptor. S100 protein and mRNA levels were evaluated by flow cytometry, Western blot, and reverse transcription-polymerase chain reaction. MAIN OUTCOME MEASURES: S100 protein and mRNA expression. RESULTS: MSCs exhibited high amplification potential over eight passages. Prior to induction, the majority of MSCs were at the G0/G1 phase of the cell cycle. After induction, MSCs displayed morphology changes similar to Schwann cells. Moreover, induction increased S100 mRNA levels. Immunofluorescence showed that MSCs expressed S100 protein, glial fibrillary acidic protein, and low-affinity nerve growth factor receptor at 7 days of induction. Induction also increased S100 protein levels compared with untreated MSCs. CONCLUSION: MSCs are capable of differentiating into Schwann cells-like cells under conditional induction in vitro, with increasing S100 mRNA and protein expression. 展开更多
关键词 bone marrow mesenchymal stem cells INDUCTION Schwann cell-like cells S100 protein in vitro stem cells neural regeneration
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Immune phenotypes of prostate cancer cells: Evidence of epithelial immune cell-like transition? 被引量:1
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作者 Dong Lin Xinya Wang +3 位作者 Stephen Yiu Chuen Choi Xinpei Ci Xin Dong Yuzhuo Wang 《Asian Journal of Urology》 2016年第4期195-202,共8页
Prostate cancers(PCa)have been reported to actively suppress antitumor immune responses by creating an immune-suppressive microenvironment.There is mounting evidence that PCas may undergo an‘‘Epithelial Immune Cell-... Prostate cancers(PCa)have been reported to actively suppress antitumor immune responses by creating an immune-suppressive microenvironment.There is mounting evidence that PCas may undergo an‘‘Epithelial Immune Cell-like Transition’’(EIT)by expressing molecules conventionally associated with immune cells(e.g.,a variety of cytokines/receptors,immune transcription factors,Ig motifs,and immune checkpoint molecules),which subsequently results in the suppression of anti-cancer immune activity within the tumor microenvironment.Recent progress within the field of immune therapy has underscored the importance of immune checkpoint molecules in cancer development,thus leading to the development of novel immunotherapeutic approaches.Here,we review the expression of select immune checkpoint molecules in PCa epithelial and associated immune cells,with particular emphasis on clinical data supporting the concept of an EIT-mediated phenotype in PCa.Furthermore,we summarize current advances in anti-immune checkpoint therapies,and provide perspectives on their potential applicability. 展开更多
关键词 Prostate cancer Immune checkpoint Epithelial immune cell-like transition Immune suppression Immune therapy
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Doublecortin-like kinase 1 exhibits cancer stem cell-like characteristics in a human colon cancer cell line 被引量:9
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作者 Lianna Li Charles F. Bellows 《Chinese Journal of Cancer Research》 SCIE CAS CSCD 2013年第2期134-142,共9页
Objective: Colon cancer stem cells (CSCs) are implicated in colorectal cancer carcinogenesis, metastasis, and therapeutic resistance. The identification of these cells could help to develop novel therapeutic strate... Objective: Colon cancer stem cells (CSCs) are implicated in colorectal cancer carcinogenesis, metastasis, and therapeutic resistance. The identification of these cells could help to develop novel therapeutic strategies. Doublecortin-like kinase 1 (DCLK1) has been viewed as a marker for gastrointestinal stem cells that fuel the self-renewal process, however others view them as a marker of Tuft cells or as an enteroendocrine subtype. The purpose of this study was to use a colon cancer cell line to identify and characterize the stem-like characteristics of the DCLKI+ cell population. Methods: To enrich stem-like cells, HCT116 cells (derived from colon adenocarcinomas) were cultured using serum-free media to form spheres under both normal oxygen and hypoxia condition. DCLK1 transcript expression in the adherent parental cells and spheroids was quantified using quantitative real time reverse transcription- polymerase chain reaction [(q)RT-PCR]. DCLK1 protein expression was determined using flow cytometry. Self-renewal capability from adherent parental cells and spheroids was determined using extreme limiting dilution analysis (ELDA). Results: Under both normal oxygen and hypoxia condition, the adherent parental cells were composed of cells that express low levels of DCLK1. However, spheroids exhibited an increased frequency of cells expressing DCLK1 on both mRNA and protein levels. Cells derived from spheroids also possess stronger self-renewal capability. Conclusions: The higher fraction of DCLK1 + cells exhibited by spheroids and hypoxia reflects the stem- like characteristics of these cells. DCLK1 may represent an ideal marker to study and develop effective strategies to overcome chemo-resistance and relapse of colon cancer. 展开更多
关键词 Doublecortin-like kinase 1 (DCLK1) colorectal cancer cancer stem cells stem cell marker SPHEROIDS
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Phenotype-Directed DNA Nanomachine for in Situ Analysis of Stem Cell-like Subpopulation in Breast Cancer
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作者 Ya Cao Huiru Mao +4 位作者 Lingjun Sha Qi Liu Bing Han Jing Zhao Genxi Li 《CCS Chemistry》 CSCD 2024年第4期1034-1046,共13页
The cancer stem cell hypothesis provides a basis for prediction of the recurrence and risk of metastasis in breast cancer.However,the unique expression pattern of stemness markers and the presence of nonstem-like canc... The cancer stem cell hypothesis provides a basis for prediction of the recurrence and risk of metastasis in breast cancer.However,the unique expression pattern of stemness markers and the presence of nonstem-like cancer cells with varied phenotypes have brought great challenges to the characterization of breast cancer stem cells.To address these challenges,a phenotype-directed DNA nanomachine has been designed for high-accuracy labeling and in situ analysis of the stem cell-like subpopulation in breast cancer.The key for the design is to use cell surfaceanchored inputs to activate the nanomachine,which undergoes different branch migration pathways such that the signal strand can only be brought onto the cancer cells having the stem cell-like phenotype.Highly sensitive determination and single-step isolation of the stem cell-like subpopulation were achieved by incorporating functional groups into the signal strand such that the nanomachine was successfully applied in a tumor-bearing mouse model.Overall,the approach provides for a substantial improvement in capability for the analysis of the breast cancer stem cell-like subpopulation,and it is expected that the new approach will advance the use of DNA nanomachines in cancer-related studies. 展开更多
关键词 breast cancer DNA nanomachine stem cell-like subpopulation electrochemical determination single-step isolation phenotypic analysis
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Neural grafts containing exosomes derived from Schwann cell-like cells promote peripheral nerve regeneration in rats 被引量:4
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作者 Taotao Hu Shusen Chang +8 位作者 Fang Qi Zhonghui Zhang Jiayin Chen Lingli Jiang Dali Wang Chengliang Deng Kaiyu Nie Guangchao Xu Zairong Wei 《Burns & Trauma》 SCIE 2023年第1期375-392,共18页
Background:Schwann cell-like cells(SCLCs),differentiated from mesenchymal stem cells,have shown promising outcomes in the treatment of peripheral nerve injuries in preclinical studies.However,certain clinical obstacle... Background:Schwann cell-like cells(SCLCs),differentiated from mesenchymal stem cells,have shown promising outcomes in the treatment of peripheral nerve injuries in preclinical studies.However,certain clinical obstacles limit their application.Hence,the primary aim of this study was to investigate the role of exosomes derived from SCLCs(SCLCs-exo)in peripheral nerve regeneration.Methods:SCLCs were differentiated from human amniotic mesenchymal stem cells(hAMSCs)in vitro and validated by immunofluorescence,real-time quantitative PCR and western blot analysis.Exosomes derived from hAMSCs(hAMSCs-exo)and SCLCs were isolated by ultracentrifugation and validated by nanoparticle tracking analysis,WB analysis and electron microscopy.A prefab-ricated nerve graft was used to deliver hAMSCs-exo or SCLCs-exo in an injured sciatic nerve rat model.The effects of hAMSCs-exo or SCLCs-exo on rat peripheral nerve injury(PNI)regeneration were determined based on the recovery of neurological function and histomorphometric variation.The effects of hAMSCs-exo or SCLCs-exo on Schwann cells were also determined via cell prolifer-ation and migration assessment.Results:SCLCs significantly expressed the Schwann cell markers glial fibrillary acidic protein and S100.Compared to hAMSCs-exo,SCLCs-exo significantly enhanced motor function recov-ery,attenuated gastrocnemius muscle atrophy and facilitated axonal regrowth,myelin forma-tion and angiogenesis in the rat model.Furthermore,hAMSCs-exo and SCLCs-exo were effi-ciently absorbed by Schwann cells.However,compared to hAMSCs-exo,SCLCs-exo signifi-cantly promoted the proliferation and migration of Schwann cells.SCLCs-exo also significantly upregulated the expression of a glial cell-derived neurotrophic factor,myelin positive regulators(SRY-box transcription factor 10,early growth response protein 2 and organic cation/carnitine transporter 6)and myelin proteins(myelin basic protein and myelin protein zero)in Schwann cells.Conclusions:These findings suggest that SCLCs-exo can more efficiently promote PNI regeneration than hAMSCs-exo and are a potentially novel therapeutic approach for treating PNI. 展开更多
关键词 Schwann cell-like cells EXOSOMES Peripheral nerve injury Mesenchymal stem cells Nerve regeneration
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Deposition of bio-mimicking graphene sheets with lotus leaf-like and cell-like structures on the nickel substrate 被引量:2
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作者 YANG Juan YAN XlngBin WANG Ying LUO BaoMin WANG LiPing XUE QunJi 《Chinese Science Bulletin》 SCIE EI CAS 2012年第23期3036-3039,共4页
Bio-mimicking graphene films,deposited on textured nickel substrates,were synthesized by the following method:replicating the surface textures of the lotus leaf by polymer duplication,fabricating textured nickel subst... Bio-mimicking graphene films,deposited on textured nickel substrates,were synthesized by the following method:replicating the surface textures of the lotus leaf by polymer duplication,fabricating textured nickel substrates by electroplating on the polymer coated with a Au film,preparing bio-mimicking graphene oxide films on the nickel substrates by vacuum filtration,and electrochemical reduction.By controlling the vacuum filtration,this replica method can not only replicate the lotus leaf structure by a graphene film,but also can achieve a novel cell-like graphene film. 展开更多
关键词 bio-mimicking graphene film lotus leaf-like STRUCTURE cell-like STRUCTURE
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Self-assembly with varying hydrophobic centers:Synthesis of red blood cell-like basic magnesium carbonate microspheres 被引量:2
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作者 Xinlong Ma Guoqing Ning +3 位作者 Bing Chen Chuanlei Qi Xingying Lan Jinsen Gao 《Particuology》 SCIE EI CAS CSCD 2015年第5期145-150,共6页
Basic magnesium carbonate microspheres with a red blood cell (RBC)-like appearance and diameters of ~3μm were synthesized by amphiphilic molecule-participated self-assembly under hydrothermal conditions, In the sel... Basic magnesium carbonate microspheres with a red blood cell (RBC)-like appearance and diameters of ~3μm were synthesized by amphiphilic molecule-participated self-assembly under hydrothermal conditions, In the self-assembly, sodium dodecyl benzene sulfonate served as a template for the formation of Mg(OH)2 spherical micelles and also as a reactant precursor that releases CO2 to react with Mg(OH)2. The growth of the microspheres is driven by the continuous generation of new hydrophobic centers because of the consumption of hydrophilic poles (--SO3-). The surfactant-directed self-assembly can be applied to the synthesis of other carbonate or metallic oxide self-assemblies, indicating that it is a universal self-assembly method for amphiphilic molecules. 展开更多
关键词 SELF-ASSEMBLY Red blood cell-like Basic magnesium carbonate MICROSPHERES
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Protein expression profile in the differentiation of rat bone marrow stromal cells into Schwann cell-like cells 被引量:1
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作者 LI WenTing1,SUN HuaLin2,XU ZengLu1,DING Fei2 & GU XiaoSong2 1 Department of Anatomy,Histology and Embryology,Peking Union Medical College,Institute of Basic Medical Science,Chinese Academy of Medical Sciences,Beijing 100005,China 2 Jiangsu Key Laboratory of Neuroregeneration,Nantong University,Nantong 226001,China 《Science China(Life Sciences)》 SCIE CAS 2009年第3期267-277,共11页
During the last decade,increasing evidence suggested that bone marrow stromal cells(MSCs) have the potential to differentiate into neural lineages.Many studies have reported that MSCs showed morphological changes and ... During the last decade,increasing evidence suggested that bone marrow stromal cells(MSCs) have the potential to differentiate into neural lineages.Many studies have reported that MSCs showed morphological changes and expressed a limited number of neural proteins under experimental conditions.However,no proteomic studies on MSCs differentiated into Schwann cell-like cells have been reported.In this study,we isolated MSCs from adult Sprague-Dawley rat femur and tibia bone marrows and induced the cells in vitro under specific conditions.By using two-dimensional gel electrophoresis(2-DE),we compared the protein profiles of MSCs before and after induced differentiation.We obtained 792 protein spots in the protein profile by 2-DE,and found that 74 spots changed significantly before and after the differentiation using PDQuest software,with 43 up-regulated and 31 down-regulated.We analyzed these 74 spots by a matrix assisted laser desorption ionization-time of flight mass spectrometry(MALDI-TOF-MS) and by database searching,and found that they could be grouped into various classes,including cytoskeleton and structure proteins,growth factors,metabolic proteins,chaperone proteins,receptor proteins,cell cycle proteins,calcium binding proteins,and other proteins.These proteins also include neural and glial proteins,such as BDNF,CNTF and GFAP.The results may provide valuable proteomic information about the differentiation of MSCs into Schwann cell-like cells. 展开更多
关键词 one marrow STROMAL cells(MSCs) DIFFERENTIATION Schwann cell-like CELLS proteomics
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基于蜂窝仿生流场的质子交换膜燃料电池的性能研究及优化
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作者 张凌云 赵雷 +5 位作者 卢家鹏 陈辉 朱学军 杨涛 王诚 杜星 《中南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2024年第6期2106-2116,共11页
为了增强质子交换膜燃料电池(PEMFCs)内部燃料分布的均匀性与水管理能力,本文研究了一种新型的基于仿生结构的蜂窝仿生流场。首先,根据蜂窝结构特征,搭建出三维多相流非等温几何模型并确立PEMFC的数学模型;其次,采用计算流体动力学Fluen... 为了增强质子交换膜燃料电池(PEMFCs)内部燃料分布的均匀性与水管理能力,本文研究了一种新型的基于仿生结构的蜂窝仿生流场。首先,根据蜂窝结构特征,搭建出三维多相流非等温几何模型并确立PEMFC的数学模型;其次,采用计算流体动力学Fluent软件对模型进行无关性与有效性验证,并对蜂窝仿生流场和常规平行流场的电池性能和燃料分布进行了模拟分析;最后,对比极化性能、气体流速分布、燃料与液态水组分浓度和电流密度分布,验证了蜂窝仿生流场设计的有效性。研究结果表明:采用蜂窝仿生流场的电池峰值功率密度比常规平行流场高15.6%,其内部水管理能力和燃料分布均匀性均强于平行流场;左端进气的蜂窝仿生流场比采用上端进气的蜂窝仿生流场在气体通路内具有更均匀的气体压力,可有效避免流道内产生局部涡流,其峰值功率密度可以达到0.3933 W/cm2。 展开更多
关键词 质子交换膜燃料电池 蜂窝仿生流场 压降 水管理
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番泻苷B通过Wnt/β-catenin通路抑制视网膜母细胞瘤HXO-Rb44细胞增殖、凋亡和侵袭
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作者 孙蒙蒙 崔博坤 +5 位作者 贾梦 冉柳 王丹荣 冯素婷 张虎 郝建章 《医学分子生物学杂志》 CAS 2024年第2期141-145,153,共6页
目的探究番泻苷B对视网膜母细胞瘤HXO-Rb44细胞增殖、凋亡、侵袭及Wnt/β-catenin信号通路的影响。方法通过采用不同剂量(0、5、10、20μmol/L)番泻苷B处理HXO-Rb44细胞,将细胞随机分为4组:Control组,番泻苷B 5、10、20μmol/L组。MTT... 目的探究番泻苷B对视网膜母细胞瘤HXO-Rb44细胞增殖、凋亡、侵袭及Wnt/β-catenin信号通路的影响。方法通过采用不同剂量(0、5、10、20μmol/L)番泻苷B处理HXO-Rb44细胞,将细胞随机分为4组:Control组,番泻苷B 5、10、20μmol/L组。MTT法检测细胞活力;克隆形成实验检测克隆形成率;流式细胞仪检测细胞凋亡率;Transwell检测侵袭细胞数;细胞成球实验检测细胞成球直径和细胞成球数目;蛋白质印迹检测cleaved caspase-3、caspase-3、MMP-2、MMP-9、SOX2、OCT4、CD44、Wnt1、β-catenin蛋白表达。结果与Control组比较,番泻苷B 10、20μmol/L组细胞活力、克隆形成率显著降低(P<0.05),细胞凋亡率和cleaved caspase-3/caspase-3表达显著升高(P<0.05),侵袭细胞数和MMP-2、MMP-9蛋白表达显著降低(P<0.05),细胞成球直径、细胞成球数目和SOX2、OCT4、CD44蛋白表达显著降低(P<0.05),Wnt1、β-catenin蛋白表达显著降低(P<0.05)。结论番泻苷B可抑制视网膜母细胞瘤HXO-Rb44细胞增殖、侵袭和干细胞样特性,诱导细胞凋亡,抑制Wnt/β-catenin信号通路的活化。 展开更多
关键词 视网膜母细胞瘤 番泻苷B 干细胞样特性 WNT/Β-CATENIN信号通路
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吉林地区朝、满、汉3个民族KIR基因的分布频率研究
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作者 韩瑜 杨帆 +3 位作者 刘玲玲 聂婷婷 杨旭 焦立新 《中国输血杂志》 CAS 2024年第10期1132-1136,共5页
目的通过分析吉林地区汉族、满族及朝鲜族的杀伤细胞免疫球蛋白样受体(KIR)基因的频率与多态性,为探究KIR基因与疾病关联提供基础数据支持。方法采用聚合酶链反应-序列特异性引物(PCR-SSP)技术对吉林地区129名满族、198名朝鲜族及201名... 目的通过分析吉林地区汉族、满族及朝鲜族的杀伤细胞免疫球蛋白样受体(KIR)基因的频率与多态性,为探究KIR基因与疾病关联提供基础数据支持。方法采用聚合酶链反应-序列特异性引物(PCR-SSP)技术对吉林地区129名满族、198名朝鲜族及201名汉族人群的KIR基因进行分型。结果KIR3DL2、KIR3DL3、KIR3DP1及KIR2DL4在所有检测对象中均为100%检出。KIR2DL1、KIR2DL3、KIR2DS4、KIR3DL1及KIR2DP1等基因在这3个民族中的检出频率较高,介于93%~98%之间。相比之下,KIR2DL2、KIR2DL5、KIR3DS1、KIR2DS1、KIR2DS2、KIR2DS3及KIR2DS5的检出率较低,分布在13%~45%。特别是满族KIR2DL5(17.83%)与KIR2DS1(17.83%)的基因检出频率显著低于吉林地区朝鲜族(42.93%、47.47%)和汉族(33.83%、33.33%);吉林地区朝鲜族KIR2DL5(42.93%)与KIR2DS1(47.47%)的检出频率显著高于汉族(33.83%、33.33%)和满族(17.83%、17.83%);吉林地区汉族单体型KIRAA的频率在吉林3个受检民族中是最高的为61.19%,显著高于朝鲜族(42.93%),以上各组差异比较P<0.05,经Bonferroni校正后,Pc<0.05。结论吉林地区的朝鲜族、满族与汉族在KIR基因分布方面既体现了中国人群KIR基因多态性,又各自展示了独特的民族遗传特性和地域性。 展开更多
关键词 杀伤细胞免疫球蛋白样受体 基因多态性 基因型 朝鲜族 满族
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STOML2基因对口腔鳞状细胞癌细胞致瘤能力的影响及相关机制
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作者 邵建民 杨文超 +2 位作者 胡豪杰 张晓敏 陈凤金 《实用口腔医学杂志》 CAS CSCD 北大核心 2024年第2期247-251,共5页
目的:探索人口型蛋白样蛋白2(STOML2)在口腔鳞状细胞癌(OSCC)组织中的表达及其对口腔鳞状细胞癌细胞(OSCCCs)体外和体内致瘤能力的影响和相关机制。方法:Western blot检测STOML2蛋白在56例OSCC患者组织及癌旁组织中的表达。将OSCCCs SCC... 目的:探索人口型蛋白样蛋白2(STOML2)在口腔鳞状细胞癌(OSCC)组织中的表达及其对口腔鳞状细胞癌细胞(OSCCCs)体外和体内致瘤能力的影响和相关机制。方法:Western blot检测STOML2蛋白在56例OSCC患者组织及癌旁组织中的表达。将OSCCCs SCC-15分为2组,实验组转染STOML2-siRNA质粒,对照组转染MOCK-siRNA质粒,荧光定量PCR检测各组细胞STOML2 mRNA含量,Western blot检测2组细胞的STOML2、CDK4、P16的表达,流式细胞仪检测细胞周期,CCK8检测细胞的增殖能力;利用裸鼠皮下种植瘤模型检测实验组和对照组细胞的体内致瘤能力。结果:OSCC患者癌和癌旁组织STOML2阳性率分别为92.86%(52/56)和8.93%(5/56)(P<0.001)。在siRNA处理后的实验组和对照组SCC-15细胞中STOML2 mRNA表达量分别为(0.43±0.09)和(1.23±0.19),STOML2蛋白表达量分别为(0.52±0.11)和(0.94±0.17)(P<0.05),CDK4表达量分别为(0.33±0.13)和(1.18±0.17)(P<0.05),P16表达量分别为(0.93±0.12)和(0.29±0.03);CCK8实验120 h实验组和对照组SCC-15细胞的吸光度分别为(1.11±0.24)和(2.19±0.28)(P<0.05),G2/M期细胞分别为35.72%±5.33%和18.65%±3.71%(P<0.05),裸鼠皮下移植瘤瘤块的体积分别为(1192.07±250.9)μm3和(2280.5±600.1)μm3,质量分别为(0.65±0.30)g和(1.62±0.40)g,但小鼠体重整体变化没有明显差异。结论:STOML2在OSCC中表达升高,STOML2通过调控P16相关通路的影响OSCCCs的致瘤能力。 展开更多
关键词 口腔鳞状细胞癌 口型蛋白样蛋白2 P16 致瘤能力
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细胞因子诱导的记忆样NK细胞与实体瘤免疫治疗的研究进展
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作者 赵瑞东 苏丽娅 《中国组织化学与细胞化学杂志》 CAS CSCD 2024年第2期165-169,共5页
自然杀伤细胞(natural killer cell,NK细胞)是一种先天性淋巴细胞,在抵御病毒感染和肿瘤侵袭中发挥着关键作用,是先天免疫系统的重要组成部分。NK细胞不具有抗原特异性,而近期的研究表明,NK细胞在半抗原暴露、病毒感染或联合细胞因子的... 自然杀伤细胞(natural killer cell,NK细胞)是一种先天性淋巴细胞,在抵御病毒感染和肿瘤侵袭中发挥着关键作用,是先天免疫系统的重要组成部分。NK细胞不具有抗原特异性,而近期的研究表明,NK细胞在半抗原暴露、病毒感染或联合细胞因子的激活后,表现出适应性和记忆样特征,后者可通过IL-12/15/18的短暂刺激诱导来实现。与正常NK细胞相比,这些细胞因子诱导的记忆样NK细胞能够长期增殖、存活,并且IFN-γ的产生及对肿瘤细胞的细胞毒性的效应器功能都得以增强,这使其成为肿瘤免疫治疗的优选细胞。在复发性/难治性急性髓系白血病的临床研究证明,细胞因子诱导的记忆样NK细胞过继性治疗是安全并有效的。细胞因子诱导的记忆样NK细胞已经开始肝癌等实体瘤的临床前研究,本文综述目前关于细胞因子诱导的记忆样NK细胞在实体瘤中的临床前研究的最新进展,为实体瘤免的疫治疗提供新思路。 展开更多
关键词 细胞因子 记忆样NK细胞 实体瘤 免疫治疗
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Cyclin D1在黄芪甲苷诱导BMSCs向神经元样细胞分化中的表达
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作者 王晓寅 王会芳 +2 位作者 罗强 张辉 张晓丽 《神经药理学报》 2024年第1期11-17,共7页
目的:研究黄芪甲苷诱导骨髓间充质干细胞(bone marrow mesenchymal stem cells,BMSCs)分化的特点和诱导过程中Cyclin D1的表达特点。方法:采用100 mg·L^(-1)黄芪甲苷诱导BMSCs分化,在1、12、24 h倒置显微镜观察细胞形态变化,免疫... 目的:研究黄芪甲苷诱导骨髓间充质干细胞(bone marrow mesenchymal stem cells,BMSCs)分化的特点和诱导过程中Cyclin D1的表达特点。方法:采用100 mg·L^(-1)黄芪甲苷诱导BMSCs分化,在1、12、24 h倒置显微镜观察细胞形态变化,免疫细胞化学方法观察巢蛋白(Nestin)、神经元特异性烯醇化酶(neuron specific enolase,NSE)、Cyclin D1的表达,RT-PCR检测Cyclin D1 mRNA的表达。结果:收集获得的骨髓细胞采用原代和传代培养,至第3代BMSCs细胞基本纯化。经100 mg·L^(-1)黄芪甲苷作用后,部分细胞自胞体长出突起,形态似神经元样细胞且表达Nestin和NSE抗体,Nestin的表达时相早于NSE且表达强度高于NSE(P<0.05)。在药物作用1 h后,BMSCs细胞Cyclin D1不论在基因转录水平还是在蛋白表达水平均出现大幅度下调,此时BMSCs开始有Nestin的表达;药物作用12、24 h,BMSCs细胞Cyclin D1表达与药物作用前表达水平无显著性差异(P>0.05)。结论:黄芪甲苷可能首先通过调整细胞周期,延长了G1期向S期转变的时间,从而启动了BMSCs的分化程序,诱导BMSCs向神经干细胞分化。在黄芪甲苷的营养作用下,细胞的突起进一步生长并向神经元分化。 展开更多
关键词 黄芪甲苷 BMSCS 分化 神经元样细胞 Cyclin D1
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帕金森病患者免疫球蛋白、Th9亚群水平变化及其与IGF-1、S-100B蛋白的相关性
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作者 曹利红 张哲 傅天 《中国免疫学杂志》 CAS CSCD 北大核心 2024年第6期1248-1252,共5页
目的:研究帕金森病(PD)患者免疫球蛋白(IgG、IgA和IgM)、辅助性T细胞亚群Th9水平变化及其与胰岛素生长因子-1(IGF-1)、S-100B蛋白的相关性。方法:选取2020年12月至2022年12月期间在河北省中医院确诊的108例PD患者,将其作为研究组,并根... 目的:研究帕金森病(PD)患者免疫球蛋白(IgG、IgA和IgM)、辅助性T细胞亚群Th9水平变化及其与胰岛素生长因子-1(IGF-1)、S-100B蛋白的相关性。方法:选取2020年12月至2022年12月期间在河北省中医院确诊的108例PD患者,将其作为研究组,并根据患者病变程度分为轻度组(35例)、中度组(44例)和重度组(29例);另选108例健康成人作为对照组。对比研究组和对照组免疫球蛋白和Th9亚群水平,以及轻度组、中度组及重度组免疫球蛋白、Th9亚群、IGF-1和S-100B蛋白水平,采用Pearson相关性分析免疫球蛋白、Th9亚群和IGF-1、S-100B蛋白的相关性。采用Spearman相关性分析PD患者疾病程度和所有差异指标间的相关性。结果:研究组IgM水平较对照组低,且重度组低于中度组,中度组低于轻度组(P<0.05);研究组IgG、IgA、IL-9和Th9亚群水平较对照组高,且重度组高于中度组,中度组高于轻度组(P<0.05)。重度组IGF-1水平低于中度组,中度组低于轻度组;重度组S-100B蛋白水平高于中度组,中度组高于轻度组(P<0.05)。Pearson相关性分析结果显示,PD患者IgM水平与IGF-1水平呈正相关,与S-100B蛋白水平呈负相关;IgG、IgA、IL-9和Th9亚群水平均与IGF-1水平呈负相关,与S-100B蛋白水平呈正相关(P<0.05)。Spearman相关性分析结果显示,PD患者疾病程度与IgM、IGF-1水平呈负相关,与S-100B蛋白、IgG、IgA、IL-9和Th9亚群水平呈正相关(P<0.05)。结论:PD患者IgM水平降低,IgG、IgA、Th9亚群水平升高,且其水平变化与IGF-1、S-100B明显相关,可以用于评估病情的严重程度。 展开更多
关键词 帕金森病 免疫球蛋白 辅助性T细胞亚群 胰岛素生长因子-1 S-100B蛋白
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基于NOD样受体3炎性小体通路对利拉鲁肽在氧化低密度脂蛋白诱导内皮细胞损伤的作用机制研究
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作者 陈玲 徐锐 +2 位作者 程新春 张占英 徐红 《中国全科医学》 CAS 北大核心 2025年第5期601-606,共6页
背景动脉粥样硬化是世界范围内引起心脑血管疾病最主要的原因,炎症是目前研究热点,其中NOD样受体3(NLRP3)是研究最为深入的炎症小体。胰高糖素样肽1(GLP-1)受体激动剂有抗动脉粥样硬化作用,具体机制尚不明确。目的研究利拉鲁肽通过拮抗... 背景动脉粥样硬化是世界范围内引起心脑血管疾病最主要的原因,炎症是目前研究热点,其中NOD样受体3(NLRP3)是研究最为深入的炎症小体。胰高糖素样肽1(GLP-1)受体激动剂有抗动脉粥样硬化作用,具体机制尚不明确。目的研究利拉鲁肽通过拮抗氧化低密度脂蛋白(ox-LDL)诱导的内皮细胞损伤的作用机制。方法2022-03-25—05-19培养人脐静脉内皮细胞(HUVEC),取HUVEC加空白血清作为对照组,100μg/mL的ox-LDL干预HUVEC 48 h作为模型组,100μg/mL的ox-LDL干预HUVEC 24 h后分别加入100、200、400 nmol/L利拉鲁肽处理24 h作为利拉鲁肽低浓度组、利拉鲁肽中浓度组、利拉鲁肽高浓度组。CCK-8法计算细胞增殖率。通过扫描电镜观察焦亡细胞形态。检测乳酸脱氢酶(LDH)活力。酶联免疫吸附试验(ELISA)检测白介素(IL)-1β、IL-18表达水平。蛋白质免疫印迹试验(Western blot)检测NLRP3、接头蛋白凋亡相关斑点样蛋白(ASC)、天冬氨酸蛋白水解酶1(Caspase-1)、焦亡执行蛋白(GSDMD)、N端结构域的焦亡执行蛋白(N-GSDMD)表达水平。结果模型组、利拉鲁肽低浓度组和利拉鲁肽中浓度组细胞增殖率低于对照组,利拉鲁肽低浓度组、利拉鲁肽中浓度组、利拉鲁肽高浓度组细胞增殖率高于模型组(P<0.05)。细胞扫描电镜结果示模型组细胞焦亡明显,利拉鲁肽低浓度组、利拉鲁肽中浓度组、利拉鲁肽高浓度组细胞焦亡情况明显改善。模型组、利拉鲁肽低浓度组LDH活力高于对照组,利拉鲁肽低浓度组、利拉鲁肽中浓度组、利拉鲁肽高浓度组低于模型组(P<0.05)。模型组、利拉鲁肽低浓度组IL-1β表达水平高于对照组,利拉鲁肽中浓度组、利拉鲁肽高浓度组IL-1β表达水平低于模型组(P<0.05);模型组IL-18表达水平高于对照组,利拉鲁肽低浓度组、利拉鲁肽中浓度组、利拉鲁肽高浓度组IL-18表达水平低于模型组(P<0.05)。模型组NLRP3、ASC、Caspase-1、GSDMD、N-GSDMD表达水平高于对照组,利拉鲁肽低浓度组ASC、Caspase-1表达水平高于对照组,利拉鲁肽中浓度组NLRP3、ASC表达水平低于模型组,利拉鲁肽高浓度组NLRP3、ASC、Caspase-1表达水平低于模型组(P<0.05)。结论利拉鲁肽显著抑制ox-LDL诱导的内皮细胞NLRP3炎性小体活化,并且能够抑制内皮细胞的焦亡,具有抗动脉粥样硬化作用。 展开更多
关键词 动脉粥样硬化 利拉鲁肽 内皮细胞 氧化低密度脂蛋白 NOD样受体3
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血清FGL1、LncSChLAP1对晚期非小细胞肺癌免疫治疗效果及预后评估的价值
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作者 夏宁 周泽军 +2 位作者 方申存 王尊乔 潘宴青 《疑难病杂志》 CAS 2024年第3期346-351,共6页
目的分析血清纤维蛋白样因子1(FGL1)、长链非编码RNA SChLAP1(LncSChLAP1)评估接受免疫治疗的晚期非小细胞肺癌(NSCLC)患者疗效及预后的价值。方法选取2019年4月—2022年12月南京市胸科医院呼吸内科诊治晚期NSCLC患者98例为NSCLC组,均... 目的分析血清纤维蛋白样因子1(FGL1)、长链非编码RNA SChLAP1(LncSChLAP1)评估接受免疫治疗的晚期非小细胞肺癌(NSCLC)患者疗效及预后的价值。方法选取2019年4月—2022年12月南京市胸科医院呼吸内科诊治晚期NSCLC患者98例为NSCLC组,均接受免疫检查点抑制剂治疗,根据疗效分为有效亚组74例和无效亚组24例,以同期医院健康体检者50例为健康对照组。酶联免疫吸附实验检测NSCLC患者血清FGL1水平,实时荧光定量PCR检测血清LncSChLAP1水平;多因素Logistic回归分析影响晚期NSCLC患者化疗疗效的因素;受试者工作特征曲线分析血清FGL1、LncSChLAP1对晚期NSCLC患者免疫治疗疗效的预测价值;Kaplan-Meier曲线分析血清FGL1、LncSChLAP1对晚期NSCLC患者生存预后的影响。结果血清FGL1、LncSChLAP1水平比较,NSCLC组高于健康对照组(t/P=57.365/<0.001、28.443/<0.001)。无效亚组TNM分期Ⅳ期比例、血清FGL1、LncSChLAP1水平高于有效亚组(χ^(2)/P=15.375/<0.001,t/P=35.077/<0.001、35.127/<0.001)。血清FGL1、LncSChLAP1高是影响晚期NSCLC患者免疫治疗疗效的独立危险因素[OR(95%CI)=1.327(1.104~1.596)、1.415(1.094~1.829)];血清FGL1、LncSChLAP1及两项联合的AUC分别为0.856、0.792、0.905,两者联合优于各自单独预测效能(Z/P=4.258/0.007、5.119/<0.001)。FGL1高、低表达组1年总体生存率分别为22.92%(11/48)、60.00%(30/50),LncSChLAP1高、低表达组1年总体生存率分别为27.66%(13/47)、54.90%(28/51),FGL1高表达组、LncSChLAP1高表达组晚期NSCLC患者1年累积生存率分别低于FGL1低表达组、LncSChLAP1低表达组(χ^(2)/P=14.180/<0.001、17.553/<0.001)。结论晚期NSCLC患者血清FGL1、LncSChLAP1升高,是新的评估晚期NSCLC患者免疫治疗疗效及生存预后的血清标志物。 展开更多
关键词 非小细胞肺癌 纤维蛋白样因子1 长链非编码RNA SChLAP1 免疫治疗 疗效 预后
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组织细胞吞噬性脂膜炎一例
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作者 李海珍 王宝庭 +1 位作者 任辉邦 祁英 《中国麻风皮肤病杂志》 2024年第8期572-574,共3页
组织细胞吞噬性脂膜炎(CHP)是一种罕见的临床疾病,以皮下脂肪组织的结节性小叶性脂膜炎为特征,本文报道1例。患者,男,56岁,双侧下肢及上肢反复出现疼痛性红斑、结节,伴发热、白细胞异常升高、周身乏力,抗生素治疗无效。病理活检示真皮... 组织细胞吞噬性脂膜炎(CHP)是一种罕见的临床疾病,以皮下脂肪组织的结节性小叶性脂膜炎为特征,本文报道1例。患者,男,56岁,双侧下肢及上肢反复出现疼痛性红斑、结节,伴发热、白细胞异常升高、周身乏力,抗生素治疗无效。病理活检示真皮可见“豆袋细胞”,最终明确诊断组织细胞吞噬性脂膜炎,给予糖皮质激素治疗后患者皮疹及症状迅速改善。 展开更多
关键词 组织细胞吞噬性脂膜炎 皮下脂膜炎样T细胞淋巴瘤 结节性脂膜炎 Weber Christian病
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脓毒症患者血清HMGB1、sTLT-1、NLR变化及其对并发急性肺损伤的预测价值
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作者 张建新 马尚超 +2 位作者 宋浩 殷飞 崔俊伟 《海南医学》 CAS 2024年第12期1736-1739,共4页
目的探讨脓毒症患者血清高迁移率族蛋白B1(HMGB1)、可溶性髓样细胞触发受体样转录因子-1(sTLT-1)、中性粒细胞/淋巴细胞比值(NLR)变化及其对并发急性肺损伤(ALI)的预测价值。方法回顾性分析2022年1月至2023年12月新乡医学院第一附属医... 目的探讨脓毒症患者血清高迁移率族蛋白B1(HMGB1)、可溶性髓样细胞触发受体样转录因子-1(sTLT-1)、中性粒细胞/淋巴细胞比值(NLR)变化及其对并发急性肺损伤(ALI)的预测价值。方法回顾性分析2022年1月至2023年12月新乡医学院第一附属医院收治的120例脓毒症患者的临床资料,根据住院期间是否发生ALI分为ALI组35例、非ALI组85例。比较ALI组与非ALI组、ALI组不同病情程度患者血清HMGB1、sTLT-1、NLR水平,并采用受试者工作(ROC)曲线分析血清HMGB1、sTLT-1、NLR对脓毒症并发ALI的预测价值。结果ALI组患者的血清HMGB1、sTLT-1、NLR水平分别为(74.21±11.70)pg/mL、(593.06±82.45)pg/mL、5.13±1.16,明显高于非ALI组的(60.15±7.95)pg/mL、(525.73±54.84)pg/mL、4.08±0.64,差异均有统计学意义(P<0.05);ALI组中,高危组患者的血清HMGB1、sTLT-1、NLR水平分别为(86.43±5.90)pg/mL、(686.31±23.91)pg/mL、(6.49±1.11),明显高于中危组的(76.64±11.44)pg/mL、(599.28±88.40)pg/mL、5.27±1.00及低危组的(64.48±5.06)pg/mL、(539.93±35.90)pg/mL、4.27±0.71,且中危组患者均高于低危组,差异均有统计学意义(P<0.05);血清HMGB1、sTLT-1、NLR联合预测脓毒症并发ALI的曲线下面积(AUC)、敏感度、特异度分别为0.890、90.60%、92.10%,HMGB1单独检测分别为0.848、84.70%、77.10%,sTLT-1单独检测分别为0.732、71.40%、68.20%,NLR单独检测分别为0.785、62.90%、84.20%,联合检测高于各指标单独检测(P<0.05)。结论脓毒症并发ALI患者血清HMGB1、sTLT-1、NLR明显升高,且三者联合检测对并发ALI有较高的预测价值。 展开更多
关键词 脓毒症 急性肺损伤 高迁移率族蛋白B1 可溶性髓样细胞触发受体样转录因子-1 中性粒细胞/淋巴细胞比值 预测价值
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