苏川
免疫负调控的重要组份----CD4+CD25+细胞的作用及分子机制的探讨;疾病慢性化的分子/细胞免疫学机制;日本血吸虫病疫苗的研制及相关的免疫学基础研究;肿瘤发生与放、化疗的分子机制探讨及抗肿瘤药物靶标的寻找。
个性化签名
- 姓名:苏川
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学术头衔:
博士生导师
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学科领域:
医学微生物学
- 研究兴趣:免疫负调控的重要组份----CD4+CD25+细胞的作用及分子机制的探讨;疾病慢性化的分子/细胞免疫学机制;日本血吸虫病疫苗的研制及相关的免疫学基础研究;肿瘤发生与放、化疗的分子机制探讨及抗肿瘤药物靶标的寻找。
苏川,男,1970年7月生于江苏吴县,1993年毕业于南京医科大学临床医学系本科,同年免试就读南京医科大学病原生物学专业研究生,1998年获医学博士学位。2001年1月至2003年12月在美国Rochester大学进行为期36个月的博士后研究工作。现在为南京医科大学国家重点学科(药理学)“免疫药学”研究方向的学术带头人,江苏省重点学科(国家重点学科培育建设点)---病原生物学系主任、教授、博士研究生导师,并兼任江苏省现代病原生物学重点实验室主任。是中国免疫学会终身会员、江苏省热带病与寄生虫病分会主任委员、江苏省动物学会寄生虫学分会主任委员、江苏省免疫学会理事、江苏省“青兰工程”优秀青年学术带头人、江苏省人事厅“333工程”人才培养对象。
自2004年回国工作以来,苏川开始筹建实验室和研究队伍,目前主要从事以血吸虫感染为主的感染免疫应答调控的相关研究工作。苏川曾以主要完成者身份参加了国家自然科学基金重点项目、欧共体基金项目、国务院总理预备金血防专项基金资助课题、多项国家自然科学基金项目以及江苏省重点实验室开放课题的研究。同时,苏川主持了国家“863计划”重大项目1项、国家“973”子课题1项、科技部重大科技专项(传染病重大专项)子课题1项、国家自然科学基金面上项目4项、江苏省教育厅重大基础研究项目1项等多个国家及省部级重要科研项目,所主持项目的资助经费累计约550万元。共发表论文100多篇,其中国外SCI论文17篇。近年的研究成果共获得省部级奖四项,授权和申报国家发明专利共3项。
国内外学术任职:
中国免疫学会终身会员
江苏省热带病与寄生虫病分会主任委员
江苏省动物学会寄生虫学分会主任委员
江苏省免疫学会理事
研究方向、研究兴趣:
免疫负调控的重要组份----CD4+CD25+细胞的作用及分子机制的探讨
疾病慢性化的分子/细胞免疫学机制
日本血吸虫病疫苗的研制及相关的免疫学基础研究
肿瘤发生与放、化疗的分子机制探讨及抗肿瘤药物靶标的寻找
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377
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成果数
9
苏川, Michael DeRan, , † Mary Pulvino, † Eriko Greene, § Chuan Su, ¶ and Jiyong Zhao*
MOLECULAR AND CELLULAR BIOLOGY, Jan. 2008, p.435-447,-0001,():
-1年11月30日
Transcriptional activation of histone subtypes is coordinately regulated and tightly coupled with the onset of DNA replication during S-phase entry. The underlying molecular mechanisms for such coordination and coupling are not well understood. The cyclin E-Cdk2 substrate NPAT has been shown to play an essential role in the transcriptional activation of histone genes at the G1/S-phase transition. Here, we show that NPAT interacts with components of the Tip60 histone acetyltransferase complex through a novel amino acid motif, which is functionally conserved in E2F and adenovirus E1A proteins. In addition, we demonstrate that transformation/transactivation domain-associated protein (TRRAP) and Tip60, two components of the Tip60 complex, associate with histone gene promoters at the G1/S-phase boundary in an NPAT-dependent manner. In correlation with the association of the TRRAP-Tip60 complex, histone H4 acetylation at histone gene promoters increases at the G1/S-phase transition, and this increase involves NPAT function. Suppression of TRRAP or Tip60 expression by RNA interference inhibits histone gene activation. Thus, our data support a model in which NPAT recruits the TRRAP-Tip60 complex to histone gene promoters to coordinate the transcriptional activation of multiple histone genes during the G1/S-phase transition.
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苏川, Lei Zhang a, Yanfen Yang a, Xue Yang a, Jiaqing Zhao a, Jianghua Yang a, b, Feng Liu a, Zhaosong Zhang a, Guanling Wu a, Chuan Su a, *
Microbes and Infection 10 (2008) 251-259,-0001,():
-1年11月30日
Schistosomiasis is a major public health problem that primarily affects developing countries. Although schistosomicidal drugs exist, the development of an efficacious vaccine would potentially be the most powerful means of controlling this disease. Previous studies have shown that vaccination with selected protective epitopes successfully induced partial protection and/or reduced female fecundity in animal models. Thus, we investigated whether the T cell epitope P5 from the host-interactive tegument of Schistosoma japonicum 22.6 (S. japonicum) could act as a protective epitope. The protective potential of P5 in a vaccine against S. japonicum was determined by using a T cell epitope based peptide-DNA dual vaccine (PDDV). In our experiments, the vaccine construct (P5e18K-PDDV) contains the peptide of the T cell epitope (P5) and plasmid DNA, encoding P5 and adjuvant GM-CSF. We show that P5e18K-PDDV induced both cell-mediated and humoral immune responses in vivo and achieved partial protection against S. japonicum infection in C57BL/6J mice. Histopathological studies reveal that P5e18K-PDDV immunized mice had substantially reduced liver pathology compared to the control groups. Together, these results suggest that P5 could be used as a vaccine immunogen for both worm killing and disease prevention against S. japonicum.
T cell epitope, PDDV, Protective immunity, Schistosoma japonicum
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苏川, Jianghua Yang, , Jiaqing Zhao, Yanfeng Yang, Lei Zhang, Xue Yang, Xiang Zhu, Minjun Ji, Nanxiong Sun and Chuan Su
2006 Blackwell Publishing Ltd, Immunology, 120, 8-18,-0001,():
-1年11月30日
A number of epidemiological and clinical studies have suggested an inverse association between allergy and helminth infection, such as Schistosomiasis. Therefore, we hypothesize that Schistosoma japonicum egg antigens, a type of native antigen, can induce production of CD4+ CD25+ T cells with regulatory activity, modulating airway inflammation and inhibiting asthma development. The frequency of CD4+ CD25+ T cells was determined by flow cytometry for mice treated with ovalbumin (OVA), CD25+ depletion/OVA, schistosome egg antigens, schistosome egg antigens/OVA and for control mice. The ability of CD25+ T cells from these mice to suppress T-cell proliferation and cytokine production was investigated both in vivo and in vitro. Results showed that the CD4+ CD25+ T cells of OVA-treated mice exhibited impaired control of dysregulated mucosal T helper 2 responses compared to the controls (P<0.05). Depletion of CD25+ cells accelerated OVA-induced airway inflammation and increased the expression of interleukin (IL)-5 and IL-4. Treatment with schistosome egg antigens increased the number and suppressive activity of CD4+ CD25+ T cells, which made IL-10, but little IL-4. In a murine model of asthma, S. japonicum egg antigens decreased the expression of Th2 cytokines, relieved antigen-induced airway inflammation, and inhibited asthma development. Thus, we provided evidence that S. japonicum egg antigens induced the production of CD4+ CD25+ T cells, resulting in constitutive immunosuppressive activity and inhibition of asthma development. These results reveal a novel form of protection against asthma and suggest a mechanistic explanation for the protective effect of helminth infection on the development of allergy.
asthma, CD4+, CD25+, T cells, IL-10, egg antigen, Schistosoma japonicum
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【期刊论文】慢性丙型肝炎患者CD4+CD25+调节性T细胞表达增加
苏川, 杨江华, 张永祥, 孙南雄
世界华人消化杂志,2005,13(18):2201~2204,-0001,():
-1年11月30日
目的:探讨CD4+CD25+调节性T(Treg)细胞在慢性丙型肝炎患者免疫下调中的意义。方法:流式细胞仪检测慢性丙型肝炎患者外周血中CD4+CD25+Treg细胞的数量;与CD4+CD25-T细胞共同培养,检测其抑制功能;流式细胞仪检测其对CD4+CD25-T细胞合成IFN-γ和IL-4的影响;RTPCR检测CD4+CD25+Treg细胞中Foxp3的mRNA表达。结果:CD4+CD25+Treg细胞约占慢性丙型肝炎患者外周血中CD4+T细胞的14.1±1.6%,显著高于正常对照5.3±0.8%(P<0.01),显著抑制CD4+T细胞的增殖(P=0.002),以及合成IFN-γ。CD4+CD25+Treg细胞高表达Foxp3。结论:持续性HCV感染患者CD4+CD25+Treg细胞表达增加,特异性抑制Th1细胞反应。
HCV, CD4+, CD25+, Treg细胞, CD4+, T细胞, Foxp3
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【期刊论文】DNA damage induces downregulation of histone gene expression through the G1 checkpoint pathway
苏川, Chuan Su, , Guang Gao, Sandra, Schneider, Christopher Helt, Carsten, Weiss, Michael A O’Reilly, Dirk, Bohmann and Jiyong Zhao, *
The EMBO Journal (2004) 23, 1133-1143,-0001,():
-1年11月30日
Activation of the G1 checkpoint following DNA damage leads to inhibition of cyclin E-Cdk2 and subsequent G1 arrest in higher eucaryotes. Little, however, is known about the molecular events downstream of cyclin E-Cdk2 inhibition. Here we show that, in addition to the inhibition of DNA synthesis, ionizing radiation induces downregulation of histone mRNA levels in mammalian cells. This downregulation occurs at the level of transcription and requires functional p53 and p21CIP1/WAF1 proteins. We demonstrate that DNA damage induced by ionizing radiation results in the suppression of phosphorylation of NPAT, an in vivo substrate of cyclin E-Cdk2 kinase and an essential regulator of histone gene transcription, and its dissociation from histone gene clusters in a p53/p21-dependent manner. Inhibition of Cdk2 activity by specific inhibitors in the absence of DNA damage similarly disperses NPAT from histone gene clusters and represses histone gene expression. Our results thus suggest that inhibition of Cdk2 activity following DNA damage results in the downregulation of histone gene transcription through dissociation of NPAT from histone gene clusters.
checkpoints, cyclin E-Cdk2, DNA damage, histone gene expression, NPAT
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苏川, L. SHEN, Z. S. ZHANG, H. W. WU, R. E. WEIR, Z. W. XIE, L. S. HU, S. Z. CHEN, M. J. JI, C. SU, Y. ZHANG, Q. D. BICKLE, S. N. OUSENS, M. G. TAYLOR, & G. L. WU
Parasite Immunology, 2003, 25, 483-487,-0001,():
-1年11月30日
Before the start of the schistosomiasis transmission season, 129 villagers resident on a Schistosoma japonicum-endemic island in Poyang Lake, Jiangxi Province, 64 of whom were stool-positive for S. japonicum eggs by the Kato method and 65 negative, were treated with praziquantel. Forty-five days later the 93 subjects who presented for follow-up were all stool-negative. Blood samples were collected from all 93 individuals. S. japonicum soluble worm antigen (SWAP) and soluble egg antigen (SEA) stimulated IL-4, IL-5 and IFN-γ production in whole-blood cultures were measured by ELISA. All the subjects were interviewed nine times during the subsequent transmission season to estimate the intensity of their contact with potentially infective snail habitats, and the subjects were all re-screened for S. japonicum by the Kato method at the end of the transmission season. Fourteen subjects were found to be infected at that time. There was some indication that the risk of infection might be associated with gender (with females being at higher risk) and with the intensity of water contact, and there was evidence that levels of SEAinduced IFN-γ production were associated with reduced risk of infection.
Schistosoma japonicum,, immunity,, praziquantel,, cytokines,, IFN-γ,, China
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苏川, L. SHEN*, Z. S. ZHANG*, H. W. WU*, R. E. WEIR†, Z. W. XIE‡, L. S. HU‡, S. Z. CHEN*, M. J. JI*, C. SU*, Y. ZHANG†, Q. D. BICKLE†, S. N. COUSENS§, M. G. TAYLOR*† & G. L. WU* *Molecular-and Immuno-parasitology Research Department, Nanjing
Clin Exp Immunol 2002; 129: 339-345,-0001,():
-1年11月30日
Schistosome antigen-driven cytokine responses and antischistosome antibody levels of residents of a Schistosoma japonicum endemic island in Poyang Lake, Jiangxi Province were studied before and 45 days after treatment with praziquantel. IL-4, IL-5, IL-10 and INF-g were all detected in the supernatants of whole-blood cultures after stimulation with schistosome soluble egg antigen (SEA) and soluble worm antigen preparation (SWAP). The percentages of subjects producing detectable amounts of each cytokine assayed were higher in the group who were negative by stool examination at the start of the study than in those who were initially stool positive. After praziquantel treatment the percentages of subjects producing both type I and type II cytokines increased. This suggests that the production of both types of cytokine was down-regulated in the presence of live, egg-laying S. japonicum adult worms but that this was reversible by treatment. In contrast, the antibody studies showed higher levels of SWAP and SEA-specific antibodies (IgE, total IgG, IgG4, IgM) in subjects who were originally stoolpositive than in those who were stool-negative. After treatment specific IgE responses were elevated, but total IgG and IgG4 anti-SEA and IgM anti-SWAP antibody levels all fell significantly.
Schistosoma japonicum, praziquantel, cytokines, antibodies, down-regulation
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【期刊论文】日本血吸虫(中国大陆株)22.6kDa抗原编码基因的核酸疫苗研究*
苏川, 马磊, 王荣芝, 邵莉君, 吴海玮, 沈蕾, 范乐明, 陈淑贞, 张兆松, 吴观陵
中国人兽共患病杂志,1995,15(6):6~10,-0001,():
-1年11月30日
为探索日本血吸虫(中国大陆株)22.6kDa抗原(Sj22.6)编码基因用作核酸疫苗的可行性,将pCMV/Sj22.6基因重组质粒经肌肉注射免疫了一批BALB/c小鼠并进行攻击感染试验,结果表明此重组质粒能在小鼠体内持续存在、稳定表达并诱导小鼠产生特异性的抗Sj22.6抗体,但未能诱导有效的保护力。
日本血吸虫 Sj 22., 6 pCMV-β 核酸疫苗
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【期刊论文】日本血吸虫22.6kDa重组抗原的高效融合表达及特性鉴定*
苏川, 马磊, 吴海玮, 沈蕾, 陈淑贞, 张兆松, 吴观陵
中国寄生虫学与寄生虫病杂志,1999,17(4):205~208,-0001,():
-1年11月30日
目的:大量获得纯化的日本血吸虫22.6kDa重组抗原。方法:用PCR方法将其编码基因序列经改造后亚克隆入载体质粒pGEX-1λT进行表达。结果:得到了融合表达的蛋白抗原。此融合蛋白表达量大,用凝血酶酶切后易大量制备纯化的重组22.6kDa抗原。结论:以此融合蛋白免疫的小鼠抗血清进行免疫印迹试验,表明Sj22.6/Sj26GST融合重组蛋白具有与Sj22.6蛋白一样的免疫学活性。
日本血吸虫 22., 6kDa抗原 重组抗原 融合表达
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