期刊文献+
共找到533篇文章
< 1 2 27 >
每页显示 20 50 100
The human leucocyte differentiation antigens (HLDA) workshops: the evolv-ing role of antibodies in research, diagnosis and therapy 被引量:2
1
作者 Heddy ZOLA Bernadette SWART 《Cell Research》 SCIE CAS CSCD 2005年第9期691-694,共4页
The 8^th International Workshop on Human Leucocyte Differentiation Antigens (chaired by HZ and managed by BS) was run over a 4-year period and culminated in a conference in December 2004. Here we review the achievem... The 8^th International Workshop on Human Leucocyte Differentiation Antigens (chaired by HZ and managed by BS) was run over a 4-year period and culminated in a conference in December 2004. Here we review the achievements of the HLDA Workshops and provide links to information on CD molecules and antibodies against them, including the 93 new CDs assigned in the 8^th Workshop. We consider what remains to be achieved (including an estimate of the number of leucocyte surface molecules still to be discovered), and how the field can best move forward. 展开更多
关键词 leucocyte differentiation antigens cd molecules cell markers
下载PDF
CD4^+ T cell-mediated presentation of non-infectious HIV-1 virion antigens to HIV-specific CD8^+ T cells 被引量:3
2
作者 XU Jian-qing Franco Lori Julianna Lisziewicz 《Chinese Medical Journal》 SCIE CAS CSCD 2006年第19期1629-1638,共10页
Background The mechanism of chronic immune activation and impairment of HIV-specific immune responses during chronic infection is not fully understood. However, it is known that high immune activation leads to more ra... Background The mechanism of chronic immune activation and impairment of HIV-specific immune responses during chronic infection is not fully understood. However, it is known that high immune activation leads to more rapid progression to AIDS. We hypothesize that CD4^+ T cell-mediated viral antigen presentation contributes to this pathologic immune activation in HIV-infected individuals. Methods HIV-specific T cells, responding to noninfectious HIV-1 virions as antigen, were measured by flow cytometric assays. These experimental conditions reflect the in vivo condition where noninfectious HIV-1 represents more than 99% of the antigens. Results CD4^+ T cells purified from HIV-infected individuals were capable of cross presenting exogenous noninfectious HIV-1 virions to HIV-1-specific CD8^+ T cells. Cross presentation required the entry of HIV-1 to CD4^+ T cells and antigen translocation from endoplasmic reticulum to the Golgi complex. Blocking CD4^+ mediated activation of HIV-specific CD8^+ T cells and redirecting the viral antigens to antigen presenting cells improved HIV-specific T cell responses. Contusions One possible cause of chronic immune activation and impairment of HIV-1 specific T cell responses is represented by HIV-1 harboring CD4^+ T cells cross presenting HIV-1 antigen to activate CD8^+ T cells. This new mechanism provides the first evidence that cross presentation of noninfectious HIV-1 virions play a role in the immunopathogenesis of HIV-1 infection. 展开更多
关键词 HIV antigen presenting cd4^+ T cell cd8+ T cell immune pathogenesis
原文传递
Activation of killer cells with soluble gastric cancer antigen combined with anti-CD3 McAb 被引量:5
3
作者 CHEN Qiang, YE Yun Bin and CHEN Zeng 《World Journal of Gastroenterology》 SCIE CAS CSCD 1999年第2期91-92,共2页
INTRODUCTIONTherehavebeenmanyreportsoncancertherapywithlymphokineactivatedkiler(LAK)celsandinterleukin2(IL... INTRODUCTIONTherehavebeenmanyreportsoncancertherapywithlymphokineactivatedkiler(LAK)celsandinterleukin2(IL2),buttheprolife... 展开更多
关键词 STOMACH neoplasms antigens NEOPLASM KILLER cells INTERLEUKIN 2 cd3 McAb
下载PDF
CD19 CAR-T细胞治疗难治/复发急性B淋巴细胞白血病儿童及青少年患者的疗效及安全性 被引量:1
4
作者 王毓 薛玉娟 +4 位作者 左英熹 贾月萍 陆爱东 曾慧敏 张乐萍 《临床儿科杂志》 CAS CSCD 北大核心 2024年第7期583-588,共6页
目的探讨CD19嵌合抗原受体T细胞(CAR-T)治疗对于儿童及青少年难治/复发急性B淋巴细胞白血病(B-ALL)的疗效及安全性。方法回顾性分析2017年6月至2021年3月接受CD19 CAR-T治疗的<25岁难治/复发B-ALL患者的临床资料,评估该疗法的疗效及... 目的探讨CD19嵌合抗原受体T细胞(CAR-T)治疗对于儿童及青少年难治/复发急性B淋巴细胞白血病(B-ALL)的疗效及安全性。方法回顾性分析2017年6月至2021年3月接受CD19 CAR-T治疗的<25岁难治/复发B-ALL患者的临床资料,评估该疗法的疗效及安全性。结果共纳入64例难治/复发B-ALL患者,男35例、女29例,中位年龄8.5(1.0~17.0)岁。CD 19 CAR-T回输后1个月进行短期疗效评估,64例患者均获得完全缓解(CR)/完全缓解兼部分血细胞计数缓解(CRi),其中有62例患者达骨髓微小残留病灶(MRD)阴性。细胞因子释放综合征(CRS)及免疫效应细胞相关神经毒性综合征(ICANS)发生率分别为78.1%及23.4%。共22例患者复发,中位复发时间10.1个月,4年总生存(OS)率为(66.0±6.0)%,4年无白血病生存(LFS)率为(63.0±6.0)%。长期随访结果显示桥接异基因造血干细胞移植(allo-HSCT)患者的LFS和OS率均优于未桥接移植患者(4年LFS率:81.8%±6.2%对24.0%±9.8%,4年OS率:81.4%±5.9%对44.4%±11.2%;均P<0.01)。结论CD 19 CAR-T可有效治疗难治/复发B-ALL,输注后桥接allo-HSCT能进一步改善患者的长期生存情况。 展开更多
关键词 嵌合抗原受体 cd 19 难治 复发 急性B淋巴细胞白血病
下载PDF
Detection of microbial antigenic components of circulating immune complexes in HIV patients:Involvement in CD4^+ T lymphocyte count depletion
5
作者 Ezeani Michael Chukwudi Onyenekwe CC +7 位作者 Wachukwu CK Anyiam DCD Meludu SC Ukibe RN Ifeanyichukwu M Onochie A Anahalu I Okafor UU 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2010年第10期828-832,共5页
Objective:To investigate the prevalence of microbial antigenic components of circulating immune complexes amongst grades of CD4 T lymphocyte counts in HIV sero positive and seronegative participants.Methods:Polyethele... Objective:To investigate the prevalence of microbial antigenic components of circulating immune complexes amongst grades of CD4 T lymphocyte counts in HIV sero positive and seronegative participants.Methods:Polyethelene glycol(PEG-600) and buffering methods of precipitation and dissociation of immune complexes was used to generate immune solution from sera of 100 HIV sero-positive and 100 HIV sero-negative participants.These were categorized into 3 grades based on CD4 count:】 500 cell/mm,200-499 cell/mm3 and 【200 cell/mm3.The immune solutions were assayed using membrane based immunoassay and antibody titration, along side its unprocessed serum for detection of various microbial antigens and or antibodies. CD4 T cell counts were estimated using Patec Cyflow SL-3 Germany.Results:Antigenic component of immune complexes of various infectious agents was detected in 99 and 70 HIV seropositive and HIV sero-negative participants,respectively.In group A,there were 10 HIV positive participants,including 4(40.0%) had circulating immune complexes(CICs) due to Salmonella species only:1(10.0%) due to Salmonella-Plasmodium falciparum(P.falciparum),SalmonellaP. falciparum-HCV and P.falciparum antigens,respectively.In group B,45(45.4%) HIV seropositive participants with CICs had CD4 T lymphocyte count between 200-499 cells/mm^3.Out of these,20(44.4%) had CICs due to Salmonella species only:9(20%) due to Salmonella-P. falciparum.In group C,there were 44(44.4%) HIV sero-positive participants,including 3(6.8%) due to Salmonella species only:24(54.4%) due to Salmonella-P.falciparum:2(4.5%) due to P. falciparum only.Conclusions:In HIV sero-positive participants,presence of heterogeneity of Salmonella species-P.falciparum antigens was highly incriminated in CD4 count depletion but not homogeneity of malaria parasites antigens.Malaria parasites antigens only were incriminated in CD4^+ count depletion amongst HIV sero-negative participants.Before taking any decision on the management of HIV-1-positive individuals,their malaria and Salmonella paratyphi status should be assessed,but not malaria status alone. 展开更多
关键词 HIV/AIDS Immune complexes MICROBIAL antigens HIV positive PARTICIPANT cd4^+ LYMPHOCYTE COUNT
下载PDF
Rejection of Experimental Hodgkins Lymphoma by T-Cells Engineered with a CD19 Chimeric Antigen Receptor
6
作者 Anna Swanson Eleanor Cheadle +3 位作者 David Gilham Dorothy Crawford Simon Talbot Ingo Johannessen 《Journal of Cancer Therapy》 2012年第5期553-561,共9页
T cells engineered to express chimeric antigen receptors (CARs) combining an external antibody binding domain with the CD3ζ T cell receptor (TCR) signaling domain for triggering cell activation are being used for imm... T cells engineered to express chimeric antigen receptors (CARs) combining an external antibody binding domain with the CD3ζ T cell receptor (TCR) signaling domain for triggering cell activation are being used for immunotherapeutic targeting of tumor cells in a non-HLA restricted manner. In this study we transduced T cells with a CD19-CAR construct containing a truncated CD34 gene (tCD34) marker and used these to target the B cell antigen CD19 on the surface of a Hodgkin’s lymphoma (HL) cell line (L591) both in vitro and in vivo. Levels of tCD34 expression in transduced peripheral blood mononuclear cells (PBMCs) ranged from 6% - 20% and this was increased to 82% after selection for transduced tCD34+ cells. In vitro cytotoxicity testing on a CD19+ HL cell line (L591) showed specific cell lysis initiated by the CD19-CAR transduced PBMCs. Importantly, CD19-CAR T cells prevented the growth of L591 HL tumor cells when co-injected subcutaneously (sc) in 6/6 severe combined immunodeficient (SCID) mice. There was no evidence of anti-tumor activity when CD19-CAR T cells were infused intravenously (iv) at the same time as L591 HL tumor cells were injected sc. However, 3/6 SCID mice showed tumor rejection within 83 days after iv infusion of CD19-CAR T cells 3 - 9 days after establishment of L591 HL tumors, while all control animals succumbed to tumors within 60 days. Interestingly, immuno-histochemical analysis of L591 HL tumors demonstrated that CD19-CAR T cells were detected not earlier than 11 days after infusion within the tumor mass. These results suggest that CD19 is a potentially attractive target for the immunotherapy of HL. 展开更多
关键词 Hodgkin’s LYMPHOMA cd19 CHIMERIC antigen Receptor Immunotherapy
下载PDF
Regulatory T cells suppress autoreactive CD4^+ T cell response to bladder epithelial antigen
7
作者 Wu-Jiang Liu Yi Luo 《World Journal of Immunology》 2016年第2期105-118,共14页
AIM: To investigate the role of regulatory T (Treg) cells in CD4^+ T cell-mediated bladder autoimmune infammation. METHODS: Urothelium-ovalbumin (URO-OVA)/OT-II mice, a double transgenic line that expresses the... AIM: To investigate the role of regulatory T (Treg) cells in CD4^+ T cell-mediated bladder autoimmune infammation. METHODS: Urothelium-ovalbumin (URO-OVA)/OT-II mice, a double transgenic line that expresses the membrane form of the model antigen (Ag) OVA as a self-Ag on the urothelium and the OVA-specific CD4^+ T cell receptor specifc for the I-Ab/OVA323-339 epitope in the periphery, were developed to provide an autoimmune environment for investigation of the role of Treg cells in bladder autoimmune infammation. To facilitate Treg cell analysis, we further developed URO-OVA^GFP-Foxp3/OT-II mice, a derived line of URO-OVA/OT-II mice that express the green fuorescent protein (GFP)-forkhead box protein P3 (Foxp3) fusion protein. RESULTS: URO-OVA/OT-II mice failed to develop bladder infammation despite the presence of autoreactive CD4^+ T cells. By monitoring GFP-positive cells, bladder infltration of CD4^+ Treg cells was observed in URO-OVA^GFP-Foxp3/OT-II mice. The infiltrating Treg cells were functionally active and expressed Treg cell effector molecule as well as marker mRNAs including transforming growth factor-β, interleukin (IL)-10, fibrinogen-like protein 2, and glucocorticoid-induced tumor necrosis factor receptor (GITR). Studies further revealed that Treg cells from URO-OVA^GFP-Foxp3/OT-II mice were suppressive and inhibited autoreactive CD4^+ T cell proliferation and interferon (IFN)-g production in response to OVA Ag stimulation. Depletion of GITR-positive cells led to spontaneous development of bladder infammation and expression of inflammatory factor mRNAs for IFN-γ, IL-6, tumor necrosis factor-α and nerve growth factor in URO-OVA^GFP-Foxp3/OT-II mice. CONCLUSION: Treg cells specifc for bladder epithelial Ag play an important role in immunological homeostasis and the control of CD4^+ T cell-mediated bladder autoimmune infammation. 展开更多
关键词 BLADDER AUTOIMMUNITY Regulatory T cell cd4+ T cells antigen
下载PDF
Preclinical evaluation of cyclophosphamide and fludarabine combined with CD19 CAR-T in the treatment of B-cell hematologic malignancies in vivo
8
作者 ZHIGANG XIA MENGYAO TIAN +7 位作者 YUCAI CHENG WENFANG YI ZEFAN DU TIANWEN LI YUCHEN WEN LINDI LI YONG LIU CHUN CHEN 《Oncology Research》 SCIE 2024年第6期1109-1118,共10页
Background:Chimeric antigen receptor T(CAR-T)cell therapy has achieved marked therapeutic success in ameliorating hematological malignancies.However,there is an extant void in the clinical guidelines concerning the mo... Background:Chimeric antigen receptor T(CAR-T)cell therapy has achieved marked therapeutic success in ameliorating hematological malignancies.However,there is an extant void in the clinical guidelines concerning the most effective chemotherapy regimen prior to chimeric antigen receptor T(CAR-T)cell therapy,as well as the optimal timing for CAR-T cell infusion post-chemotherapy.Materials and Methods:We employed cell-derived tumor xenograft(CDX)murine models to delineate the optimal pre-conditioning chemotherapy regimen and timing for CAR-T cell treatment.Furthermore,transcriptome sequencing was implemented to identify the therapeutic targets and elucidate the underlying mechanisms governing the treatment regimen.Results:Our preclinical in vivo evaluation determined that a combination of cyclophosphamide and fludarabine,followed by the infusion of CD19 CAR-T cells five days subsequent to the chemotherapy,exerts the most efficacious therapeutic effect in B-cell hematological malignancies.Concurrently,RNA-seq data indicated that the therapeutic efficacy predominantly perturbs tumor cell metabolism,primarily through the inhibition of key mitochondrial targets,such as C-Jun Kinase enzyme(C-JUN).Conclusion:In summary,the present study offers critical clinical guidance and serves as an authoritative reference for the deployment of CD19 CAR-T cell therapy in the treatment of B-cell hematological malignancies. 展开更多
关键词 cd19 CAR-T B-cell hematologic malignancies metabolism In vivo
下载PDF
Regulation of CD8+T cells by lipid metabolism in cancer progression
9
作者 Yong Tang Ziqing Chen +1 位作者 Qianying Zuo Yibin Kang 《Cellular & Molecular Immunology》 2024年第11期1215-1230,共16页
Dysregulation of lipid metabolism is a key characteristic of the tumor microenvironment,where tumor cells utilize lipids for proliferation,survival,metastasis,and evasion of immune surveillance.Lipid metabolism has be... Dysregulation of lipid metabolism is a key characteristic of the tumor microenvironment,where tumor cells utilize lipids for proliferation,survival,metastasis,and evasion of immune surveillance.Lipid metabolism has become a critical regulator of CD8+T-cell-mediated antitumor immunity,with excess lipids in the tumor microenvironment impeding CD8+T-cell activities.Considering the limited efficacy of immunotherapy in many solid tumors,targeting lipid metabolism to enhance CD8+T-cell effector functions could significantly improve immunotherapy outcomes.In this review,we examine recent findings on how lipid metabolic processes,including lipid uptake,synthesis,and oxidation,regulate CD8+T cells within tumors.We also assessed the impact of different lipids on CD8+T-cell-mediated antitumor immunity,with a particular focus on how lipid metabolism affects mitochondrial function in tumor-infiltrating CD8+T cells.Furthermore,as cancer is a systemic disease,we examined systemic factors linking lipid metabolism to CD8+T-cell effector function.Finally,we summarize current therapeutic approaches that target lipid metabolism to increase antitumor immunity and enhance immunotherapy.Understanding the molecular and functional interplay between lipid metabolism and CD8+T cells offers promising therapeutic opportunities for cancer treatment. 展开更多
关键词 cd8+T cells Lipid metabolism Mitochondria Oxidative phosphorylation Immunotherapy
原文传递
Cd对小白菜生长及氮素代谢的影响研究 被引量:36
10
作者 于方明 仇荣亮 +5 位作者 汤叶涛 应蓉蓉 周小勇 赵璇 胡鹏杰 曾晓雯 《环境科学》 EI CAS CSCD 北大核心 2008年第2期506-511,共6页
采用水培的方法,研究了不同Cd2+水平(0、1、2.5、5、10 mg.L-1)对小白菜叶片中铵态氮、硝态氮、可溶性蛋白质、游离脯氨酸、叶绿素、部分营养元素含量以及蛋白水解酶、硝酸还原酶、谷氨酰胺转化酶与合成酶活性的影响.结果表明,低浓度的C... 采用水培的方法,研究了不同Cd2+水平(0、1、2.5、5、10 mg.L-1)对小白菜叶片中铵态氮、硝态氮、可溶性蛋白质、游离脯氨酸、叶绿素、部分营养元素含量以及蛋白水解酶、硝酸还原酶、谷氨酰胺转化酶与合成酶活性的影响.结果表明,低浓度的Cd处理(1 mg.L-1)刺激了小白菜的生长,提高了小白菜的生物量、叶绿素含量以及硝酸还原酶、谷氨酰胺合成酶与转化酶活性.Cd处理降低了小白菜对Cu、Ca、Fe、Mg的吸收,但促进了P的吸收.10 mg.L-1的Cd处理显著降低了可溶性蛋白质含量、硝酸还原酶、谷氨酰胺合成酶和转化酶活性(p<0.05),提高了蛋白水解酶活性,不利于叶片中铵态氮与硝态氮的同化,造成叶片中铵态氮和硝态氮的累积.小白菜叶片中游离脯氨酸含量与铵态氮含量成极显著正相关(p<0.01),说明小白菜叶片中游离脯氨酸的累积在一定程度上缓解了铵的毒害. 展开更多
关键词 cd 小白菜 氮素代谢 酶活性
下载PDF
CD_(44V6)在胃癌中表达及其临床意义 被引量:15
11
作者 陈江 张振玉 +3 位作者 祝金泉 王崇文 谢勇 黄德强 《临床与实验病理学杂志》 CAS CSCD 1998年第5期440-441,共2页
目的:探讨CD44V6与胃癌发生及胃癌生物学行为的关系。方法:应用免疫组化S-P方法研究10例胃粘膜肠化及46例胃癌的CD44V6表达。结果:胃粘膜肠化及胃癌阳性率分别为10%和63%,淋巴结转移组阳性率(75%)明... 目的:探讨CD44V6与胃癌发生及胃癌生物学行为的关系。方法:应用免疫组化S-P方法研究10例胃粘膜肠化及46例胃癌的CD44V6表达。结果:胃粘膜肠化及胃癌阳性率分别为10%和63%,淋巴结转移组阳性率(75%)明显高于非转移组(45%,P<0.05),且CD44V6表达与Lauren分型相关。结论:CD44V6分子参与肿瘤发生。 展开更多
关键词 胃肿瘤 cd44V6 基因表达 生物学行为
下载PDF
CD_(44)表达与乳腺癌淋巴结转移及预后相关因素的关系 被引量:8
12
作者 何彦丽 张雅洁 +2 位作者 顾莹莹 张惠球 陈国勤 《临床与实验病理学杂志》 CAS CSCD 1999年第2期107-109,I015,共3页
目的:探讨CD44表达与乳腺癌淋巴结转移与预后的关系。方法:采用LSAB法对76例乳腺癌伴淋巴结转移和无转移组CD44表达进行了免疫组化检测,并结合临床资料、增殖细胞核抗原(PCNA)、雌激素受体(ER)表达情况进行... 目的:探讨CD44表达与乳腺癌淋巴结转移与预后的关系。方法:采用LSAB法对76例乳腺癌伴淋巴结转移和无转移组CD44表达进行了免疫组化检测,并结合临床资料、增殖细胞核抗原(PCNA)、雌激素受体(ER)表达情况进行综合分析。结果:CD44阳性率在乳腺癌伴淋巴结转移组为706%,无转移组为452%,两组间存在显著性差异(P<005),随着组织学分级的增高CD44表达呈递增趋势,Ⅰ级与Ⅱ、Ⅲ级间阳性率差异存在显著性(P<005);CD44与PCNA表达存在平行关系,与ER表达呈负相关趋势。结论:CD44表达与乳腺癌淋巴结转移及预后有关。 展开更多
关键词 抗原 cd44 乳腺癌 淋巴结转移
下载PDF
CD_(14)^+单核细胞人类白细胞抗原-DR预测脓毒症预后及指导免疫调理治疗的初步临床研究 被引量:100
13
作者 林洪远 郭旭生 +4 位作者 姚咏明 程尉新 翁志华 韦文韬 盛志勇 《中国危重病急救医学》 CAS CSCD 2003年第3期135-138,共4页
目的 :验证 CD+ 1 4 单核细胞人类白细胞抗原 DR( HL A DR)对于评估严重脓毒症患者免疫功能的作用 ;探讨胸腺 5肽 ( TP 5 )治疗免疫抑制的有效性。方法 :符合严重脓毒症标准 ,CD+ 1 4 单核细胞 HL A DR<30 %的患者被定义为脓毒症免... 目的 :验证 CD+ 1 4 单核细胞人类白细胞抗原 DR( HL A DR)对于评估严重脓毒症患者免疫功能的作用 ;探讨胸腺 5肽 ( TP 5 )治疗免疫抑制的有效性。方法 :符合严重脓毒症标准 ,CD+ 1 4 单核细胞 HL A DR<30 %的患者被定义为脓毒症免疫抑制和代偿性抗炎症反应综合征 ( CARS)者纳入本研究 ,并接受 1m g TP 5肌肉注射 ,1次 / d,直至 CD+ 1 4 单核细胞 HL A DR>5 0 %或死亡。在 TP 5治疗前及结束治疗时分别测量 CD+ 1 4单核细胞 HL A DR和肿瘤坏死因子α( TNFα)、白介素 6 ( IL 6 )、IL 10和 IL 13。结果 :15例患者存活 ,5例死亡。经 TP 5治疗后所有患者的 CD+ 1 4 单核细胞 HL A DR均有不同程度提高 ,但仅存活者有显著差异。所有患者细胞因子均高于健康对照 ,治疗后存活患者的 TNFα、IL 6明显下降 ;死亡者各种细胞因子变化不明显。结论 :用 CD+ 1 4 单核细胞 HL A DR鉴别脓毒症免疫抑制并指导免疫刺激治疗是安全可靠的 ,且对评估预后有重要价值 ;TP 5可能对逆转免疫抑制有效 ,但需要严格的对照治疗研究确认 ;脓毒症的免疫抑制发生和逆转与促炎 /抗炎细胞因子平衡无关 ,确切机制有待深入探讨。 展开更多
关键词 脓毒症 免疫抑制 代偿性抗炎症反应综合征 cd14^+单核细胞 人类白细胞抗原-DR 胸腺5肽
下载PDF
5-FC/CD系统对荷大肠癌裸鼠肿瘤的杀伤效应 被引量:11
14
作者 崔龙 林言箴 +4 位作者 朱正纲 陈雪华 顾琴龙 刘炳亚 郁宝铭 《世界华人消化杂志》 CAS 1999年第6期473-475,共3页
目的研究cd基因对大肠肿瘤的特异杀伤作用,探索自杀基因靶向治疗大肠癌的有效途径.方法逆转录病毒感染法将G1ceacdNa及pcd2分别转导入高分泌CEA的大肠癌细胞Lovo中,再分别接种到裸鼠皮下.成瘤后腹腔给予5... 目的研究cd基因对大肠肿瘤的特异杀伤作用,探索自杀基因靶向治疗大肠癌的有效途径.方法逆转录病毒感染法将G1ceacdNa及pcd2分别转导入高分泌CEA的大肠癌细胞Lovo中,再分别接种到裸鼠皮下.成瘤后腹腔给予5FC(500mg/kg)治疗,观察肿瘤重量的变化及病理学特点.结果含G1ceacdNa及pcd2逆转录病毒载体的病毒滴度分别为:13×107及21×108CFU/L.所有转基因成功并接种动物均成瘤.腹腔给予5FC治疗后发现,转由CEA基因顺式转录调控序列(TRS)驱动cd基因的组织特异性重组逆转录病毒载体G1ceacdNa的肿瘤对5FC的敏感性明显高于转非cea调控cd基因的肿瘤,治疗结束后肿瘤重量分别为31mg±8mg及113mg±23mg(P<001).结论本实验提示cea转录调控序列可控制cd基因在CEA阳性的大肠癌组织中高效表达。 展开更多
关键词 结直肠肿瘤 cd基因 癌胚抗原 基因治疗
下载PDF
食管癌组织CD15抗原和组织蛋白酶D表达的关系 被引量:14
15
作者 谷化平 尚培中 +1 位作者 苏红 李志钢 《世界华人消化杂志》 CAS 2000年第3期259-261,共3页
目的 探讨CD15抗原和组织蛋白酶D(Cath-D)在食管癌的表达意义及其相互关系。 方法 应用微波-LSAB免疫组化法,观察65例食管癌组织(男46例,女19例;平均年龄54岁;均为鳞癌)中CD15和Cath-D的表达阳性率及其相互关系。 结果 食管癌CD15和CD... 目的 探讨CD15抗原和组织蛋白酶D(Cath-D)在食管癌的表达意义及其相互关系。 方法 应用微波-LSAB免疫组化法,观察65例食管癌组织(男46例,女19例;平均年龄54岁;均为鳞癌)中CD15和Cath-D的表达阳性率及其相互关系。 结果 食管癌CD15和CD阳性率分别为58%(38/65例)和65%(42/65例);食管癌CD15和Cath-D表达与性别、年龄、肿瘤部位、大体类型及肿瘤大小无关(P>0.05)。CD15和Cath-D表达阳性率:鳞癌Ⅲ级(88%,14/16 vs 100%,16/16)均显著高于鳞癌Ⅰ级(43%,6/14 vs 50%,7/14)和鳞癌Ⅱ级(51%,18/35 vs 54%,19/35,P<0.05);外膜层浸润(74%,20/27 vs82%,22/27)显著高于肌层浸润(47%,18/38 vs 53%,20/38,P<0.05);有淋巴结转移组(72%,26/36 vs 78%,28/38)显著高于无淋巴结转移组(41%,12/29 vs 48%、14/29,P<0.025);死亡组(70%,31/44 vs 77%,34/44)显著高于五年生存组(33%,7/21 vs 38%,8/21,P<0.01)。CD15阳性的肿瘤Cath-D阳性率显著高于CD15阴性者(82%,31/38 vs41%,11/27),CD15表达与Cath-D表达呈正相关(r=0.42,P<0.01)。 结论 检测CD15和Cath-D表达对判断食管癌恶性程度、预测其侵袭转移趋势和预后及指导治疗有重要意义。食管癌CD15与Cath-D表达具有相互协同作用可能。 展开更多
关键词 食管肿瘤 代谢 cd15抗原 组织蛋白酶D
下载PDF
Cu(Ⅱ)和Cd(Ⅱ)对克氏原螯虾代谢酶的影响 被引量:6
16
作者 董学兴 吕林兰 +3 位作者 黄金田 王爱民 於叶兵 许海涛 《大连海洋大学学报》 CAS CSCD 北大核心 2011年第5期467-470,共4页
将体质量为(11.35±1.52)g克氏原螯虾Procambarus clarkii暴露于不同亚致死浓度的Cu(Ⅱ)(0.055、0.28、1.38、6.88、34.38 mg/L)和Cd(Ⅱ)(0.0048、0.024、0.12、0.60、3.00 mg/L)溶液中96 h,测定其肌肉中碱性磷酸酶(AKP)、酸性磷酸... 将体质量为(11.35±1.52)g克氏原螯虾Procambarus clarkii暴露于不同亚致死浓度的Cu(Ⅱ)(0.055、0.28、1.38、6.88、34.38 mg/L)和Cd(Ⅱ)(0.0048、0.024、0.12、0.60、3.00 mg/L)溶液中96 h,测定其肌肉中碱性磷酸酶(AKP)、酸性磷酸酶(ACP)及肝胰腺中碱性磷酸酶(AKP)、酸性磷酸酶(ACP)、谷草转氨酶(GOT)和谷丙转氨酶(GPT)的活性。结果表明:低浓度的Cu(Ⅱ)和Cd(Ⅱ)能诱导克氏原螯虾代谢酶的活性,肌肉和肝胰腺中代谢酶的活性均随Cu(Ⅱ)和Cd(Ⅱ)浓度的升高呈先升后降的趋势;Cd(Ⅱ)浓度为0.12 mg/L时,肝胰腺中ACP、AKP、GPT、GOT活性均达到最大值,分别较对照组提高了58.83%、86.17%、85.66%、70.98%(P<0.05);Cu(Ⅱ)浓度为0.28 mg/L时,肝胰腺中ACP和AKP活性达最大值,分别较对照组提高了112.53%和94.98%(P<0.05),Cu(Ⅱ)浓度为1.38mg/L时,肌肉中ACP和AKP活性最高,分别较对照组提高了242.35%和171.97%(P<0.05)。 展开更多
关键词 Cu(Ⅱ) cd(Ⅱ) 克氏原螯虾 代谢酶
下载PDF
类风湿性关节炎患者血清CD_(40)L及IL-6 hs-CRP表达及临床意义 被引量:16
17
作者 谭军 陈建国 《重庆医学》 CAS CSCD 北大核心 2013年第36期4402-4404,共3页
目的探讨类风湿性关节炎(RA)患者血清白细胞介素-6(IL-6)、超敏C-反应蛋白(hs-CRP)和T细胞CD40配体(CD40L)水平变化及其临床意义。方法 90例RA患者为观察组(又分RA活动组、RA稳定组),90例健康志愿者为对照组。采用增强免疫比浊测量法检... 目的探讨类风湿性关节炎(RA)患者血清白细胞介素-6(IL-6)、超敏C-反应蛋白(hs-CRP)和T细胞CD40配体(CD40L)水平变化及其临床意义。方法 90例RA患者为观察组(又分RA活动组、RA稳定组),90例健康志愿者为对照组。采用增强免疫比浊测量法检测患者血清中hs-CRP水平,以酶联免疫吸附法检测CD40L、IL-6水平。结果 RA组患者外周血清血小板计数(BPC)、类风湿因子(RF)、红细胞沉降率(ESR)、hs-CRP、IL-6及CD40L均明显高于对照组,差异均具有统计学意义(P<0.05);除RF外,RA活动组患者外周血清中BPC、ESR、hs-CRP、IL-6及CD40L均明显高于RA稳定组患者,差异均具有统计学意义(P<0.05)。血小板升高组RA患者外周血清中RF、ESR、hs-CRP、IL-6及CD40L均明显高于血小板正常组的RA患者,差异均具有统计学意义(t=6.070、3.858、3.272、3.217、2.253,P<0.05)。结论血清hs-CRP、IL-6及CD40L与RA炎症反应关系密切,联合检测可临床观察RA患者的病情变化和治疗效果,具有一定临床应用价值。 展开更多
关键词 关节炎 类风湿 抗原 cd 白细胞介素6 C-反应蛋白质
下载PDF
CD_(44v6)、ki-67在宫颈癌的表达及临床意义 被引量:7
18
作者 江忠清 曲军英 +1 位作者 朱凤川 郑秀 《福建医科大学学报》 2001年第4期332-335,共4页
目的 探讨 CD4 4v6 、ki- 6 7在宫颈癌中的表达情况及其临床意义。 方法 应用免疫组织化学 SP法检测 6 3例宫颈癌和正常宫颈组织中 CD4 4v6 、ki- 6 7的表达情况并分析其与有关的临床病理因素间的关系。 结果 CD4 4v6 的着色部位... 目的 探讨 CD4 4v6 、ki- 6 7在宫颈癌中的表达情况及其临床意义。 方法 应用免疫组织化学 SP法检测 6 3例宫颈癌和正常宫颈组织中 CD4 4v6 、ki- 6 7的表达情况并分析其与有关的临床病理因素间的关系。 结果 CD4 4v6 的着色部位主要在细胞膜和细胞质 ;而 ki- 6 7主要在胞核。 CD4 4v6 在正常宫颈上皮、宫颈原位癌和宫颈浸润癌中的阳性表达情况分别为 0 / 10 ,2 / 6和 37/ 5 7;ki- 6 7分别为 0 / 10 ,4 / 6和 5 6 / 5 7。随着病程进展 ,CD4 4v6 和 ki- 6 7的阳性表达率显著升高 (P<0 .0 1)。 CD4 4v6 阳性表达与宫颈癌的盆腔淋巴结转移、脉管浸润和 ki- 6 7的表达情况有关 (P<0 .0 5 ) ;而与临床分期、分化程度、组织学类型、间质浸润和癌灶大小无关 (P>0 .0 5 )。有淋巴结转移、脉管浸润和ki- 6 7过表达者 CD4 4v6 的阳性表达率显著高于无淋巴结转移、脉管浸润和 ki- 6 7低表达者。 结论  CD4 4v6 的阳性表达可能在宫颈癌的发生发展、淋巴结转移、脉管浸润和癌细胞增殖过程中起着重要的作用 ,但非唯一决定因素。CD4 4v6 展开更多
关键词 宫颈肿瘤 抗原 cd44V6 KI-67抗原 免疫组织化学 宫颈癌
下载PDF
CD 40激发肿瘤抗原特异性DCs对CIK细胞生物学活性的影响 被引量:2
19
作者 杨新静 黄建安 +2 位作者 穆传勇 陈成 张学光 《肿瘤》 CAS CSCD 北大核心 2007年第12期953-956,共4页
目的:研究CD40激发凋亡肿瘤细胞致敏的树突状细胞(dendritic cells,DCs)对细胞因子诱导杀伤(cytokine-inducedkiller,CIK)细胞的细胞表型、增殖活性及细胞毒活性的影响。方法:常规方法从健康人外周血单个核细胞中诱导DCs和CIK细胞,采用... 目的:研究CD40激发凋亡肿瘤细胞致敏的树突状细胞(dendritic cells,DCs)对细胞因子诱导杀伤(cytokine-inducedkiller,CIK)细胞的细胞表型、增殖活性及细胞毒活性的影响。方法:常规方法从健康人外周血单个核细胞中诱导DCs和CIK细胞,采用凋亡肿瘤细胞负载DCs,并用或不用激发型CD40单克隆抗体(CD40mAb)激活DCs成熟;成熟DCs与同源的CIK细胞共育5d,分别获得DC40Ag-CIK细胞及DCAg-CIK细胞;观察细胞增殖活性;流式细胞仪检测细胞表型;酶联免疫吸附实验(enzyme-linked immunosorbent assays,ELISA)法检测细胞培养上清液中IFN-γ的含量;[3H]-TdR掺入法测定细胞杀伤活性。结果:凋亡肿瘤细胞负载激发可使DCs上调表达CD1a、CD80、CD86、CD83、HLR-DR,联合CD40mAb激发可进一步促进DCs成熟;培养至第14天时,DC40Ag-CIK细胞、DCAg-CIK细胞、CIK细胞分别扩增(18.2±1.7)倍、(15.0±1.2)倍、(9.3±1.8)倍;DC40Ag-CIK细胞中的CD3+CD56+比例较DCAg-CIK细胞和CIK细胞明显上调(P<0.05);DC40Ag-CIK细胞、DCAg-CIK细胞对A549杀伤活性强于CIK细胞(P<0.05),并且DC40Ag-CIK细胞强于DCAg-CIK细胞(P<0.05);CIK细胞、DCAg-CIK细胞、DC40Ag-CIK细胞培养上清液中IFN-γ的含量递增,分别为(1494.7±246.3)pg/mL、(2706.3±197.0)pg/mL、(3676.3±335.0)pg/mL。结论:与单独凋亡肿瘤细胞负载的DCs相比,CD40激发的凋亡肿瘤细胞负载的DCs可进一步提高CIK细胞的增殖活性及细胞毒活性。 展开更多
关键词 抗原 肿瘤 树突细胞 细胞因子 杀伤细胞 细胞凋亡 抗原 cd40
下载PDF
缺氧诱导因子1α和CD133预测直肠癌患者新辅助放化疗疗效的临床研究 被引量:2
20
作者 蔡成 王建平 +6 位作者 钟志凤 戴志慧 王庆华 董武真 施红旗 刘庆伟 杜金林 《浙江大学学报(医学版)》 CAS CSCD 北大核心 2017年第1期36-43,共8页
目的:评估缺氧诱导因子1α(1IIF-1α)和CD133在接受新辅助放化疗的直肠癌患者病理缓解及预后中的意义。方法:选取2010年1月至2015年12月浙江省金华市中心医院收治的114例病理学检查结果证实为直肠癌的患者,获取放疗前后肿瘤组织标本,RT-... 目的:评估缺氧诱导因子1α(1IIF-1α)和CD133在接受新辅助放化疗的直肠癌患者病理缓解及预后中的意义。方法:选取2010年1月至2015年12月浙江省金华市中心医院收治的114例病理学检查结果证实为直肠癌的患者,获取放疗前后肿瘤组织标本,RT-PCR检测放化疗前后肿瘤组织HIF-1α和CD133mRNA表达,免疫组织化学方法检测放疗后肿瘤组织HIF-1α和CD133蛋白的表达。Spearman秩相关方法分析HIF-1α与CD133 mRNA表达相关性,单因素及多因素方法分析与直肠癌患者病理学缓解相关的因素,Logistic和Cox回归方法分析与患者总存活率及无病存活率相关的临床病理因素。结果:HIF-1α和CD133mRNA的表达与临床T分期、新辅助放化疗后TNM分期、病理学完全缓解、复发及转移相关,与性别、年龄、体质指数等其他临床因素无关。新辅助放化疗后,HIF-1α与CD133 mRNA表达呈显著正相关(α=0.579,P=0.000)。免疫组织化学检测显示,CD133高表达肿瘤细胞中HIF-1α也呈高表达。单因素分析发现,HIF-1α mRNA(P=0.001)和CD133mRNA表达(P=0.022)与病理学完全缓解相关;多因素分析发现,HIF-1α mRNA(P=0.012)和CD133 mRNA(P=0.047)表达是患者病理学完全缓解的独立预测因子。Cox多因素回归分析发现,HIF-1α mRNA表达(P=0.025)与CD133 mRNA表达(P=0.033)是患者无复发存活的独立预测因子,HIF-1α mRNA表达是患者总存活的独立预测因子(P=0.046)。结论:HIF-1α和CD133与接受新辅助放化疗的直肠癌患者病理学完全缓解及存活显著相关,对两者的研究可能在新辅助放化疗患者的选择及改善患者预后方面具有意义。 展开更多
关键词 直肠肿瘤/药物疗法 直肠肿瘤/放射疗法 直肠肿瘤/病理学 缺氧 诱导因子1α亚基/代谢 抗原 cd/代谢 存活率 预后 免疫组织化学
下载PDF
上一页 1 2 27 下一页 到第
使用帮助 返回顶部