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Analysis of CD4^+CD25^+ Regulatory T Cells and Foxp3 mRNA in the Peripheral Blood of Patients with Asthma 被引量:15
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作者 薛克营 周咏明 +2 位作者 熊盛道 熊维宁 唐滔 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2007年第1期31-33,共3页
The changes of CD4^+CD25^+ regulatory T cells (CD4^+CD25^+ Treg) and Foxp3 mRNA in peripheral blood mononuclear cells (PBMCs) from patients with asthma were investigated in order to elucidate the possible role... The changes of CD4^+CD25^+ regulatory T cells (CD4^+CD25^+ Treg) and Foxp3 mRNA in peripheral blood mononuclear cells (PBMCs) from patients with asthma were investigated in order to elucidate the possible roles of CD4^+CD25^+ Treg in the development of asthma. The peripheral blood samples were collected from 29 healthy controls (normal control group) and 78 patients with asthma which included 30 patients in exacerbation group, 25 patients in persistent group, and 23 patients in remission group. By using flow cytometry and RT-PCR, the CD4^+CD25^+ Treg ratio and Foxp3 mRNA in PBMCs were detected. The CD4^+CD25^+ Treg ratio and Foxp3 mRNA in PBMCs of exacerbation and persistent groups were lower than that of remission and normal control groups (P〈0.05). Although the CD4^+CD25^+ Treg ratio and Foxp3 mRNA of remission group were also lower than that of normal control group, there was no significant difference between them (P〉0.05). As compared with persistent group, exacerbation group had lower CD4^+CD25^+ Treg ratio and Foxp3 mRNA (P〈0.05). It was indicated that the decrease of CD4^+CD25^+ Treg ratio and its function in PBMCs may be responsible for pathogenesis of asthma. 展开更多
关键词 AStHMA peripheral blood mononuclear cells ^^cd4^+cd25^+ regulatory t cells Foxp3 mRNA
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Depletion of CD4^+CD25^+ regulatory T cells can promote local immunity to suppress tumor growth in benzo[a]pyrene-induced forestomach carcinoma 被引量:9
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作者 Yi-Ling Chen Jung-Hua Fang +1 位作者 Ming-Derg Lai Yan-Shen Shan 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第38期5797-5809,共13页
AIM: To elucidate the distribution of CD4^+CD25^+ regulatory T cells (Tregs) in different lymphoid tissues and its local enhancement on tumor growth before and after depletion of CD4^+CD25^+ Tregs. METHODS: Fe... AIM: To elucidate the distribution of CD4^+CD25^+ regulatory T cells (Tregs) in different lymphoid tissues and its local enhancement on tumor growth before and after depletion of CD4^+CD25^+ Tregs. METHODS: Female ICR mice were garaged with benzo[a]pyrene (BaP) to induce forestomach carcinoma. CD4^+CD25^+ Tregs were intraperitoneally depleted with monoclonal antibody PC61. These mice were divided into BaP-only, BaP + IgG, BaP + PC61, and control groups. The forestomach of mice was dissected for histological analysis, and tunnel test was performed for apoptosis of tumor cells. CD4^+CD25^+ Tregs were sorted from different lymphoid tissues and expression of Foxp3, IL-10, and chemokine receptors was analyzed by flow cytometry, semi-quantitative and veal-time polymerase chain reaction. RESULTS: The mice gavaged with only BaP showed increased forestomach papilloma and carcinoma at wk 16 and 32. The proportion of CD4^+CD25^+ Tregs was significantly higher in peri-stomach regional lymph nodes than in other lymphoid tissues. These CD4^+CD25^+ Tregs in regional lymph nodes expressed higher levels of Foxp3 and IL-10, enriched in the CD62L-subset, and CCR1 and CCR5 chemokine receptors. In mice gavaged with BaP + PC61, the number of tumor nodules and tumor volume decreased significantly with massive infiltrating cells and apoptosis of tumor cells. In the draining regional lymph nodes, the number of CD4^+CD25^+ Tregs also decreased significantly. CONCLUSION: Inducible and activated CD4^+CD25^+ Tregs in the draining regional lymph nodes suppress host local immunity during tumor growth. Depletion of CD4^+CD25^+ Tregs can promote host local immunity to suppress tumor growth. 展开更多
关键词 ^^cd4^+cd25^+ regulatory t cells Forestomach tumor FOXP3
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Influence of Danshen Injection on airway inflammation and CD4^+ CD25^+ regulatory T cells of asthmatic rats 被引量:6
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作者 Keying Xue Yongming Zhou +2 位作者 Shengdao Xiong Weining Xiong Dan Li 《Journal of Nanjing Medical University》 2006年第5期292-295,共4页
Objective: To investigate the influence of Danshen Injection on airway inflammation and CD4^+CD25^+ regulatory T cells(CD4^+CD25^+ Tr) of asthmatic rats, and elucidate the possible mechanism of Danshen Inject... Objective: To investigate the influence of Danshen Injection on airway inflammation and CD4^+CD25^+ regulatory T cells(CD4^+CD25^+ Tr) of asthmatic rats, and elucidate the possible mechanism of Danshen Injection in treatment of asthma. Methods: 30 Wister rats were randomly divided into control group, asthma group and Danshen Injection treated group. Bronchoalveolar lavage fluids (BALF) were collected, and cytology studies were conducted. Lung tissues were obtained and pathologic analyses were done with hematoxylin and eosin stain (HE). Flow cytometry was used to detect the CD4^+CD25^+ Tr ratio in peripheral blood mononuclear cells (PBMCs). Results: Total cell, the percentage of lymphocytes, neutrophils and eosinophils (Eos) in BALF of Danshen Injection-treated group were lower than that in asthma group (P〈0.05, P〈0.01). Compared with asthma group, less infiltration of inflammatory cells in lung tissues was observed in Danshen Injection-treated group. CD4^+CD25^+ Tr of asthma group was lower than that of control and Danshen Injection treated group (P〈0.05). Conclusion: Danshen Injection can suppress airway inflammation of asthmatic rats, probably by increasing the number of CD4^+CD25^+ Tr. 展开更多
关键词 Danshen Injection AStHMA airway inflammation ^^cd4^+cd25^+ regulatory t cells
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Isolation and identification of CD4^+CD25^+ regulatory T cells in rat 被引量:1
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作者 Ling Lü Feng Zhang Liyong Pu Chao Jiang 《Journal of Nanjing Medical University》 2006年第4期238-241,共4页
Objective: To establish a stable and high efficient method for collection of CD4^+CD25^+ regulatory T cells from rats in vitro. Methods: CD4^+CD25^+ regulatory T cells were isolated from the rat splenic cells th... Objective: To establish a stable and high efficient method for collection of CD4^+CD25^+ regulatory T cells from rats in vitro. Methods: CD4^+CD25^+ regulatory T cells were isolated from the rat splenic cells through two steps by magic cell sorting (MACS) system. The first step was negative selection of CD4^+T cells by cocktail antibodies and anti-IgG magic microbeads, and the second step was positive selection of CD25^+T cells by anti-CD25 PE and anti-PE magic microbeads. The purity and viability of separated cells were measured by flow cytometry (FACS) and Trypan blue staining. The suppressive ability of seperated cells on the proliferation of CD4^+CD25^- T cells was assessed by cell proliferation assay. Results: The purity of negatively enriched CD4^+ T cells was 79%-87% (83.6%±2.5% ) , and the purity of positively enriched CD4^+CD25^+ T cells was 86%- 93% ( 90.2±1.8% ) with the viability of 92%~95% (92.8% ± 3.4% ). The enriched cells significantly suppressed the proliferation of CD4^+CD25^- T cells in mixed lymphocyte culture (P 〈 0.05). Conclusion: An effective method can be established for enrichment of CD4^+CD25^+ regulatory T cells in two steps by MACS, with satisfied cell purity, viability and function. 展开更多
关键词 magic cell sorting system ^^cd4^+cd25^+ regulatory t cells flow cytometry technique RAtS
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抗CD_(137)单克隆抗体对哮喘患者外周血CD_4^+CD_(25)^+T淋巴细胞死亡方式的影响
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作者 尹柯 邬伟明 +1 位作者 周文英 黄瑾 《山东医药》 CAS 北大核心 2009年第3期10-12,共3页
目的探讨抗CD137单克隆抗体对哮喘患者外周血CD4+CD2+5T淋巴细胞的影响。方法采用密度梯度离心法及尼龙棉柱法分离16例健康志愿者(对照组)及12例哮喘患者(哮喘组)外周血T淋巴细胞,磁性细胞分离器(MACS)分离得到CD4+CD2+5T淋巴细胞,分别... 目的探讨抗CD137单克隆抗体对哮喘患者外周血CD4+CD2+5T淋巴细胞的影响。方法采用密度梯度离心法及尼龙棉柱法分离16例健康志愿者(对照组)及12例哮喘患者(哮喘组)外周血T淋巴细胞,磁性细胞分离器(MACS)分离得到CD4+CD2+5T淋巴细胞,分别利用电镜及流式细胞仪观察、检测抗CD137单克隆抗体干预72h的细胞自噬率、凋亡率、胀亡率及FOXp3的表达。结果抗CD137单克隆抗体干预后两组外周血CD4+CD2+5T淋巴细胞自噬率及凋亡率均增加,但哮喘组均低于对照组。结论抗CD137单克隆抗体可促进CD4+CD2+5T淋巴细胞凋亡和自噬。 展开更多
关键词 cd_137单克隆抗体 ^^cd_4^+cd_25^+t淋巴细胞 自噬 凋亡 胀亡
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CD4^+CD25^(high) Regulatory Cells in Peripheral Blood of NSCLC Patients
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作者 刘莉 姚军霞 +1 位作者 丁乾 黄士昂 《Journal of Huazhong University of Science and Technology(Medical Sciences)》 SCIE CAS 2006年第5期548-551,共4页
The proportion and changes of CD4^+CD25^high regulatory T cells (Trs) in peripheral blood of non-small cell lung cancer (NSCLC) patients were analyzed and their clinical significance explored. The peripheral bloo... The proportion and changes of CD4^+CD25^high regulatory T cells (Trs) in peripheral blood of non-small cell lung cancer (NSCLC) patients were analyzed and their clinical significance explored. The peripheral blood was collected from 61 patients with NSCLC and 15 healthy controls. By using monoclonal antibodies, the blood samples were evaluated with the flow cytometry for lymphocyte subsets (CD3^+, CD4^+ and CD8^+) and CD4^+CD25^high Tr cells. The results showed that the proportion of CD4^+CD25^high Tr cells in NSCLC group was significantly higher than in control group [(4.36 ±2.07) % vs (2.04±1.03) %, P〈0.01]. The proportion of CD4^+CD25^ high Tr cells in late stage was higher than that in early stage [stages Ⅰ +Ⅱ (2.264±0.6) %; stage Ⅲ(3.284± 1.38) %; stage IV (6.06 4±4.08) %] (P〈0.05). Kaplan-Meier survival analysis revealed that the prognosis of the patients who had higher proportion of CD4^+CD25^high Tr cells in peripheral blood was worse (P=0.0026). In conclusion, the relative increase in CD4^+CD25^high Tr cells in peripheral blood may be related to im- munosuppression and tumor progression in patients with NSCLC. This finding suggests that CD4^+CD25^high Tr cells in peripheral blood of NSCLC may be positive for prognosis analysis. The use of depletion of the CD4^+CD25^high Tr cell therapy to treat NSCLC patients may be an effective strategy. 展开更多
关键词 non-small cell lung cancer t subsets ^^cd4^+cd25^high regulatory t cell flow cytometry survival analysis
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肾型过敏性紫癜患者血清IL-5、IL-10、CD_4^+ CD_(25)^+调节性T细胞测定及意义 被引量:8
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作者 陈小红 何芳 +1 位作者 柳青 许飏 《疑难病杂志》 CAS 2013年第2期140-141,共2页
目的探讨肾型过敏性紫癜(HSPN)患者血清白细胞介素-5(IL-5)、白细胞介素-10(IL-10)、CD_4^+CD_(25)^+调节性T细胞(CD_4^+CD_(25)^+Tr)的变化及其在HSPN发病机制中的作用。方法采集32例HSPN患者急性期及恢复期清晨空腹血清,30例健康对照... 目的探讨肾型过敏性紫癜(HSPN)患者血清白细胞介素-5(IL-5)、白细胞介素-10(IL-10)、CD_4^+CD_(25)^+调节性T细胞(CD_4^+CD_(25)^+Tr)的变化及其在HSPN发病机制中的作用。方法采集32例HSPN患者急性期及恢复期清晨空腹血清,30例健康对照组清晨空腹血清,用酶联免疫吸附试验(ELISA)测IL-5、IL-10、CD_4^+CD_(25)^+Tr浓度水平。结果血清IL-5、IL-10浓度在HSPN急性期>HSPN恢复期>健康对照组(P均<0.05),CD_4^+CD_(25)^+Tr浓度在HSPN急性期<HSPN恢复期<健康对照组(P均<0.01);HSPN急性期IL-5与CD_4^+CD_(25)^+Tr、IL-5与IL-10以及IL-10与CD_4^+CD_(25)^+Tr相互间呈正相关(分别为r=0.65、0.47、0.47,P<0.05,P<0.01)。结论 IL-5、IL-10与CD_4^+CD_(25)^+Tr可能参与了HSPN的发病过程,且IL-5、IL-10与CD_4^+CD_(25)^+Tr相互关联。 展开更多
关键词 肾型过敏性紫癜 白细胞介素5 白细胞介素10 ^^cd_4^+cd_(25)^+调节性t细胞
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Effects of estrogen on CD4^+ CD25^+ regulatory T cell in peripheral blood during pregnancy 被引量:9
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作者 Yuan-Huan Xiong Zhen Yuan Li He 《Asian Pacific Journal of Tropical Medicine》 SCIE CAS 2013年第9期748-752,共5页
Objective To investigate the effects of estrogen(E_2)level on regulatory T cells(Treg)in peripheral blood during pregnancy.Methods:A total of 30 healthy non-pregnant women were selected as control group,90 pregnant wo... Objective To investigate the effects of estrogen(E_2)level on regulatory T cells(Treg)in peripheral blood during pregnancy.Methods:A total of 30 healthy non-pregnant women were selected as control group,90 pregnant women of early,middle and late pregnancy and 30 postpartum women at 1 month after parturition were selected as experimental groups including early pregnancy group,middle pregnancy group and late pregnancy group;the proportions of CD4^+CD25^+Treg and CD4^+CD25^+CD127^-Treg among CD4 T cells were detected by flow cytometry;the serum estrogen content in peripheral blood was detected by electrochemical immune luminescence method.Results:E_2 level was coincident with the change of Tregs number during pregnancy.The estrogen content in peripheral blood increased gradually from early pregnancy to late pregnancy,then decreased significantly after parturition,and the level at 1 month after parturition down to the level in non-pregnancy group(P>0.05);the level of E_2 in pregnancy groups were significantly higher than those in non-pregnancy group(P<0.01);and there were significant differences among early pregnancy group,middle pregnancy group and late pregnancy group(P<0.05).The proportions of CD4^+CD25^+Treg and CD4^+CD25^+CD127^-Treg in pregnancy groups were significantly higher than those in non-pregnancy group(P<0.05),but decreased significantly after parturition,and there was no significant difference between non-pregnancy group and postpartum women group(P>0.05):the proportions in middle and late pregnancy groups were significantly higher than those in early pregnancy group(P<0.05).but decreased slightly in late pregnancy group,there was no significant difference between late pregnancy group and middle pregnancy group(P>0.05).There was correlation between Tregs number with estrogen level during pregnancy.The proportion of CD4^+CD25^+Treg and CD4^+CD25^+CD 127^-Treg were positively correlated with estrogen level.Conclusions:High proportion of CD4^+CD25^+Trcg and CD4^+CD25^+CD127^-Treg is closely related to the high level of E,during pregnancy.It suggested that high level of estrogen may induce an increase of CD4^+CD25^+Treg in peripheral blood.and then influence the immune function of pregnant women.The results of this experiment might play an important role of estrogen in immune-modulation during pregnancy. 展开更多
关键词 EStROGEN ^^cd4^+cd25^+regulatory t cell ^^cd4^+ ^^cd25^+ cd ^^127^-regulatory t cell PREGNANCY Immuno-modulation
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溃疡性结肠炎活动期和缓解期患者外周血CD_4^+CD_(25)^+T细胞的变化 被引量:3
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作者 郭敏 王静 +4 位作者 吴迪 邹阳春 翁艳 贾志伟 王法成 《中国全科医学》 CAS CSCD 北大核心 2009年第4期280-282,共3页
目的探讨溃疡性结肠炎(UC)患者活动期和缓解期外周血CD4+CD25+T细胞的变化。方法选择14例健康者(正常对照组)和27例UC患者(活动期12例,缓解期15例)。应用流式细胞仪检测3组受检者外周血单个核细胞(PBMC)中CD4+CD25+T细胞的比例。应用罗... 目的探讨溃疡性结肠炎(UC)患者活动期和缓解期外周血CD4+CD25+T细胞的变化。方法选择14例健康者(正常对照组)和27例UC患者(活动期12例,缓解期15例)。应用流式细胞仪检测3组受检者外周血单个核细胞(PBMC)中CD4+CD25+T细胞的比例。应用罗氏Light Cycler荧光定量PCR仪检测PBMC中Foxp3 mRNA的含量。结果UC活动期患者CD4+CD25+T细胞、CD4+T细胞的比例,CD4+CD25+T/CD4+T细胞比值及Foxp3 mRNA含量与正常对照组比较,差异均有统计学意义(P<0.05);UC缓解期患者CD4+CD25+T细胞、CD4+T细胞的比例及Foxp3 mRNA含量与正常对照组比较,差异无统计学意义(P>0.05),但CD4+CD25+T/CD4+T细胞与正常对照组比较,差异有统计学意义(P<0.05)。结论UC活动期患者外周血CD4+CD25+T细胞比例和Foxp3 mRNA含量显著高于健康者,可见外周血CD+CD+T细胞比例改变在UC的发病机制中起重要作用。 展开更多
关键词 结肠炎 溃疡性 活动期 缓解期 ^^cd_4^+cd_25^+t细胞
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INVESTIGATION OF REGULATORY T CELLS IN PATIENTS WITH NON-SMALL CELL LUNG CANCER
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作者 张路 梁永杰 +3 位作者 任涛 朱辉 徐志龙 戴亚蕾 《Medical Bulletin of Shanghai Jiaotong University》 CAS 2010年第1期6-9,共4页
Objective To evaluate the prevalence of CD4 ^+ CD25^high regulatory T cells ( Treg cells) in the peripheral blood mononuclear cells (PBMC) and tumor-infiltrating lymphocytes (TIL) of patients with non-small cel... Objective To evaluate the prevalence of CD4 ^+ CD25^high regulatory T cells ( Treg cells) in the peripheral blood mononuclear cells (PBMC) and tumor-infiltrating lymphocytes (TIL) of patients with non-small cell lung cancer (NSCLC) and to investigate immunosuppression to the progression of cancer. Methods Peripheral blood and tumor tissues were collected from 20 patients with NSCLC at the time of surgery. None of the patients received surgery, radiotherapy, chemotherapy, or other medical interventions before this study. Cancer stages of the patients were Ⅰ-Ⅲ A. Venous blood samples were obtained from 20 health donors. PBMC were isolated from blood samples by differential centrifugation over Ficoll-Hypaque. TILs were isolated from tumors by differential centrifugation over Ficoll-Hypaque and Percoll. Percentage of CD4^+ CD25^highTr/CD4+T in PBMC and TIL was assessed by the flow cytometry. Results The percentage of CD4^ + CD25high Tr/ CD4 ^+T in PBMC [ (4. 87 ± 1.22 ) % ] of NSCLC patients was significantly higher than that in healthy donors [ ( 2.36 ± 0. 72 ) % ] ( P 〈 0.01 ). The percentage of CD4^+ CD25^highTr/ CD4^+ T in PBMC [ (5.40 ± 1.20) % ] of NSCLC patients in stage Ⅱ-Ⅲ A was significantly higher than that in stage Ⅰ [ (3. 87 ± 0. 22 ) % ] ( P 〈 0. 01 ). The percentage of CD4 + CD25hiShTr/ CD4 + T in TIL[ ( 8. 66 ±0. 76) % ] of NSCLC patients in stage Ⅱ-Ⅲ A was significantly higher than that in stage Ⅰ [ ( 7. 04 ± 0. 80) % ] ( P 〈 0. 01 ). Conclusion The prevalence of CD4 ^+ CD25^highTreg cells in PBMC and TIL of NSCLC patients was significantly higher than that in healthy donors. These Treg cells may be preventing appropriate antitumor immune responses. The population of CD4^ + CD25^highTreg cells in PBMC and TILs of NSCLC patients with Ⅱ-Ⅲ A stage was significantly higher than that of NSCLC patients with Ⅰ stage. These Treg cells may facilitate development of tumors. 展开更多
关键词 non-small cell lung cancer cd4 ^^^+ ^^cd25^high regulatory t cells tumor-infiltrating lymphocyte
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Alterations of peripheral CD4^(+)CD25^(+)Foxp3^(+)T regulatory cells in mice with STZ-induced diabetes 被引量:4
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作者 Yu Zhen Lina Sun +7 位作者 He Liu Kaizhong Duan Chun Zeng Lianjun Zhang Di Jin Jianxia Peng Wenjun Ding Yong Zhao 《Cellular & Molecular Immunology》 SCIE CAS CSCD 2012年第1期75-85,共11页
Complications arising from abnormal immune responses are the major causes of mortality and morbidity in diabetic patients.CD4^(+)CD25^(+)T regulatory cells(Tregs)play pivotal roles in controlling immune homeostasis,im... Complications arising from abnormal immune responses are the major causes of mortality and morbidity in diabetic patients.CD4^(+)CD25^(+)T regulatory cells(Tregs)play pivotal roles in controlling immune homeostasis,immunity and tolerance.The effect of hyperglycemia on CD4^(+)CD25^(+)Tregs has not yet been addressed.Here we used streptozotocin(STZ)-induced diabetic mice to study the effects of long-term hyperglycemia on CD4^(+)CD25^(+)Tregs in vivo.Four months after the onset of diabetes,the frequency of CD4^(+)CD25^(+)Foxp3^(+)T regulatory cells was significantly elevated in the spleen,peripheral blood lymphocytes(PBLs),peripheral lymph nodes(pLNs)and mesenteric LNs(mLNs).CD4^(+)CD25^(+)Tregs obtained from mice with diabetes displayed defective immunosuppressive functions and an activated/memory phenotype.Insulin administration rescued these changes in the CD4^(+)CD25^(+)Tregs of diabetic mice.The percentage of thymic CD4^(+)CD25^(+)naturally occurring Tregs(nTregs)and peripheral CD41Helios1Foxp31 nTregs were markedly enhanced in diabetic mice,indicating that thymic output contributed to the increased frequency of peripheral CD4^(+)CD25^(+)Tregs in diabetic mice.In an in vitro assay in which Tregs were induced fromCD4^(+)CD25^(+)T cells by transforming growth factor(TGF)-b,high glucose enhanced the efficiency of CD4^(+)CD25^(+)Foxp3^(+)T inducible Tregs(iTregs)induction.In addition,CD4^(+)CD25^(+)T cells from diabetic mice were more susceptible to CD4^(+)CD25^(+)Foxp3^(+)TiTreg differentiation than those cells from control mice.These data,together with the enhanced frequency of CD4^(+)CD25^(+)Foxp3^(+)T iTregs in the periphery of mice with diabetes,indicate that enhanced CD4^(+)CD25^(+)Foxp3^(+)T iTreg induction also contributes to a peripheral increase in CD4^(+)CD25^(+)Tregs in diabetic mice.Our data show that hyperglycemia may alter the frequency of CD4^(+)CD25^(+)Foxp3^(+)T Tregs in mice,which may result in late-state immune dysfunction in patients with diabetes. 展开更多
关键词 ^^cd4^(+)cd25^(+)Foxp3^(+)t regulatory t cells DIABEtES HYPERGLYCEMIA immune disorder MICE
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解毒祛瘀滋肾方对MRL/lpr狼疮小鼠CD_(4)^(+)T细胞CD229/CD25轴的影响 被引量:1
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作者 陈雷鸣 朱正阳 +1 位作者 范永升 包洁 《中华中医药杂志》 CAS CSCD 北大核心 2021年第4期1873-1877,共5页
目的:从CD_(4)^(+)T细胞CD229/CD25轴探讨解毒祛瘀滋肾方治疗系统性红斑狼疮(SLE)的作用机制。方法:24只MRL/lpr狼疮小鼠随机分成模型组、激素组、中药组,各8只,8只C57BL/6小鼠作为空白组。中药组予2g/mL解毒祛瘀滋阴方水煎剂灌胃,激素... 目的:从CD_(4)^(+)T细胞CD229/CD25轴探讨解毒祛瘀滋肾方治疗系统性红斑狼疮(SLE)的作用机制。方法:24只MRL/lpr狼疮小鼠随机分成模型组、激素组、中药组,各8只,8只C57BL/6小鼠作为空白组。中药组予2g/mL解毒祛瘀滋阴方水煎剂灌胃,激素组予0.5mg/mL醋酸泼尼松片混悬液灌胃,模型组和空白组予蒸馏水灌胃,连续干预8周。观测小鼠尿蛋白、血清抗双链DNA抗体、肿瘤坏死因子-α(TNF-α)、转化生长因子-β(TGF-β)、白细胞介素-2(IL-2)水平,HE染色观察肾脏病理改变;RT-PCR和Western blot分别检测小鼠脾脏CD_(4)^(+)T细胞CD229、CD25 mRNA和蛋白的表达水平。流式细胞术检测小鼠脾脏CD_(4)^(+)T细胞调节性T细胞(Treg)比率。结果:与模型组比较,中药组小鼠肾脏病理损伤明显改善,尿蛋白、血清抗双链DNA抗体、TNF-α、TGF-β水平显著降低(P<0.01),IL-2水平显著升高(P<0.01);CD229、CD25 mRNA表达水平显著升高(P<0.01),蛋白表达上调;Treg比率升高(P<0.01)。结论:解毒祛瘀滋肾方可能是通过调控CD229/CD25轴,促进Treg增加进而改善SLE病情。 展开更多
关键词 系统性红斑狼疮 解毒祛瘀滋肾方 ^^cd_(4)^(+)t细胞 cd229/cd25
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Biological features of intrahepatic CD4^(+)CD25^(+)T cells in the naturally tolerance of rat liver transplantation
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作者 LU Ling ZHANG Feng +5 位作者 PU Liyong YAO Aihua YU Yue SUN Beicheng LI Guoqiang WANG Xuehao 《Frontiers of Medicine》 SCIE CSCD 2007年第4期373-376,共4页
The biological features of intrahepatic CD4^(+)CD25^(+)T regulatory cells in the naturally tolerance of rat liver transplantation were explored.Orthotopic liver transplan-tation was performed in two allogeneic rat str... The biological features of intrahepatic CD4^(+)CD25^(+)T regulatory cells in the naturally tolerance of rat liver transplantation were explored.Orthotopic liver transplan-tation was performed in two allogeneic rat strain combina-tions,one with fatal immunosuppression despite a complete major histocompatibility complex mismatch.The subjects were divided into three groups according to different donors and recipients[Tolerance group:LEW-to-DA;Rejection group:DA-to-LEW;Syngegnic group(control group):DA-to-DA].The proportion of intrahepatic CD4^(+)CD25^(+)T cells from three groups was determined by flow cytometry(FCM)in different time.The intrahepaitc CD4^(+)CD25^(+)T cells were isolated by magnetic activated cell sorting(MACS)method and identified by FCM.The Foxp3 mRNA was detected by reverse transcriptase polymerase chain reaction(RT-PCR).And their suppression on the proliferation of CD4^(+)CD25^(-)T effector cells was analyzed by cell proliferation assay in vitro.Beginning immediately after transplantation,the proportion of Treg cells increased over time in both allogeneic groups but was significantly greater in the Rejection group.The pro-portion of Treg cells declined after day 5,and such reduction was more dramatic in the Rejection group than in the Tole-rance group.Animals in the Tolerance group showed a second increase in the proportion after day 14.Intrahepatic CD4^(+)CD25^(+)T cells isolated from spontaneous tolerance models inhibited the proliferation of mixed lymphocyte reaction.The purity of CD4^(+)CD25^(+)Tcells sorted by MACS was 86%–93%.The CD4^(+)CD25^(+)T cells could specifically express the Foxp3 gene compared with CD4^(+)CD25^(-)T cells.In vitro,the spleen cells from LEW rats can irritate the proliferation of CD4^(+)CD25^(+)T cells more obviously than the syngegnic spleen cells.CD4^(+)CD25^(+)Tr cells could suppress the proliferation of CD4^(+)CD25^(-)T cells,but the inhibition was reversed by exo-genous IL-2(200 U/mL).The CD4^(+)CD25^(+)T regulatory cells specifically express the Foxp3 gene,which may play animpor-tant role in the induction of liver transplantation tolerance by suppressing the reaction of effective T cells. 展开更多
关键词 liver transplantation immune tolerance t-lymphocytes regulatory ^^cd4^(+)cd25^(+)t regulatory cells
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CD4^+CD25^+ regulatory T lymphocytes in tuberculous pleural effusion 被引量:8
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作者 QIN Xue-jun SHI Huan-zhong LIANG Qiu-li HUANG Lu-ying YANG Hai-bo 《Chinese Medical Journal》 SCIE CAS CSCD 2008年第7期581-586,共6页
Background Active suppression by CD4^+CD25^+ regulatory T lymphocytes plays an important role in the down-regulation of T cell responses to foreign and self-antigens. This study was conducted to analyze whether the ... Background Active suppression by CD4^+CD25^+ regulatory T lymphocytes plays an important role in the down-regulation of T cell responses to foreign and self-antigens. This study was conducted to analyze whether the CD4^+CD25^+ regulatory T cells exist and function normally in tuberculous pleural effusion. Methods The percentages of CD4^+CD25^+ T cells in pleural effusion and peripheral blood from patients with tuberculous pleurisy and peripheral blood from healthy control subjects were determined by flow cytometry. The expression of forkhead transcription factor Foxp3 was also examined. CD4^+CD25^+ and CD4^+CD25^-T cells from pleural effusion and blood were isolated, and were cultured to observe the effects of CD4^+CD25^+ T cells on proliferation response of CD4^+CD25^- T cells in vitro. Results There were increased numbers of CD4^+CD25^+ T cells in tuberculous pleural effusion compared with peripheral blood from both patients with tuberculous pleurisy and normal subjects, and these cells demonstrated a constitutive high-level expression of Foxp3. Moreover, CD4^+CD25^+ T cells mediated potent inhibition of proliferation response of CD4^+CD25^- T cells. Conclusion The increased CD4^+CD25^+ T cells in tuberculous pleural effusion express a high level of Foxp3 transcription factor, while potently suppressing the proliferation of CD4^+CD25^- T cells. 展开更多
关键词 ^^cd4^+cd25^+ t cells pleural effusion regulatory t cells tUBERCULOSIS
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雷公藤多苷对大鼠肾移植后慢性排斥反应的影响 被引量:3
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作者 杨俊伟 杨帅平 +1 位作者 王长安 吴秋杰 《中医学报》 CAS 2021年第11期2414-2421,共8页
目的:探讨雷公藤多苷对大鼠肾移植后慢性排斥反应的影响。方法:手术法复制肾移植大鼠模型,将模型成功的大鼠随机分为模型组、雷公藤多苷低剂量组(10mg·kg^(-1))、雷公藤多苷高剂量组(20mg·kg^(-1))、环磷酰胺组(15.6mg·k... 目的:探讨雷公藤多苷对大鼠肾移植后慢性排斥反应的影响。方法:手术法复制肾移植大鼠模型,将模型成功的大鼠随机分为模型组、雷公藤多苷低剂量组(10mg·kg^(-1))、雷公藤多苷高剂量组(20mg·kg^(-1))、环磷酰胺组(15.6mg·kg^(-1)),另设正常大鼠为假手术组。术后第11天开始给予相应的药物灌胃,假手术组与模型组灌胃等体积生理盐水,连续灌胃至肾移植后12周。检测大鼠血清白细胞介素-2(interleukin-2,IL-2)、IL-23、IL-17、尿素氮(blood urea nitrogen,BUN)、肌酐(serum creatinine,Scr)水平;流式细胞术检测大鼠血清CD_(4)^(+)CD_(25)^(+)调节性T淋巴细胞、Th17细胞占比;HE染色观察大鼠肾脏病理损伤及按照Banff标准评价慢性排斥反应程度;免疫组化法检测大鼠肾组织转化生长因子(transforming growth factor-β1,TGF-β1)表达。结果:与模型组比较,雷公藤多苷低、高剂量组及环磷酰胺组血清BUN、Scr、IL-23、IL-17水平显著降低(P<0.05),血清IL-2水平显著升高(P<0.05);血清CD_(4)^(+)CD_(25)^(+)调节性T淋巴细胞占比显著升高(P<0.05),Th17细胞占比、Th17细胞/CD_(4)^(+)CD_(25)^(+)调节性T淋巴细胞显著降低(P<0.05);大鼠肾脏病理损伤改善且Banff评分显著降低(P<0.05);大鼠肾脏TGF-β1光密度显著降低(P<0.05)。结论:雷公藤多苷可保护大鼠肾移植后肾功能,抑制慢性排斥反应,作用机制可能与改善CD_(4)^(+)CD_(25)^(+)调节性T细胞/Th17平衡、调节炎症因子水平有关。 展开更多
关键词 雷公藤多苷 肾移植 慢性排斥反应 ^^cd_(4)^(+)cd_(25)^(+)调节性t细胞 tH17 大鼠
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