The major difficulties of human papillomavirus(HPV) treatment are its persistence and recurrence. The HPV E7 oncoprotein-loaded dendritic cells have been evaluated as cellular vaccine in previous reports. Plasmacytoid...The major difficulties of human papillomavirus(HPV) treatment are its persistence and recurrence. The HPV E7 oncoprotein-loaded dendritic cells have been evaluated as cellular vaccine in previous reports. Plasmacytoid dendritic cells(pDCs) play an essential role of connecting the innate immune response and adaptive immune response in the immune system. But they function in HPV E7 loading is unclear. To investigate whether loading of the HPV type 6b, 11, and 16 E7 proteins affects the activity of pDCs, human peripheral blood-separated pDCs and mouse bone marrow-derived pDCs were pulsed with the HPV E7 proteins. The expression levels of CD40, CD80, CD86, and MHC II were significantly upregulated in pDCs upon HPV 6b/11 E7 protein pulse. The secretion and gene expression of type I IFN and IL-6 were both upregulated by HPV 6b/11 E7 proteins, more significant than HPV 16 E7 protein. The expression of essential factors of TLR signaling pathway and JNK/p38 MAP kinase signaling pathway were all increased in HPV 6b/11 E7 proteins pulsed pDCs. Our results suggest that HPV E7 proteins could promote the differentiation and maturation of pDCs and activate the TLR and MAPK pathway to induce host innate immune response. It might be conducive to explore novel immunotherapy targeting HPV infection with HPV E7 loaded pDC.展开更多
Background： Inflammation is often linked with the progress and poor outcome of lung cancer. The understanding of the relationship between tumor-associated macrophages （TAMs） and lung cancer cells involves in the un...Background： Inflammation is often linked with the progress and poor outcome of lung cancer. The understanding of the relationship between tumor-associated macrophages （TAMs） and lung cancer cells involves in the underlying mechanism of inflammatory cytokine production. Toll-like receptors （TLRs） are engaged in promoting the production of pro-inflammatory cytokines and play an important role in tumor immunology. Methods： To investigate the mechanisms by which TAMs influence the production of pro-inflammatory cytoldnes in lung cancer cells, we established an in vitro coculture system using TAMs and human non- small cell lung cancer （NSCLC） cell line SPC-A1. Levels of interleukin （IL）-113, IL-6 and IL-8 in SPC-A1 were evaluated by RT-PCR and cytometric bead array assay after being cocultured with TAMs. Expression changes of TLRs and TLRs signaling pathway proteins in SPC-Al were further confirmed by RT-PCR and western blot. The level changes of IL-1β, IL-6 and IL-8 in SPC-Al were also detected after the stimulation of TLRs agonists. Results： We found that the phenotype markers of TAMs were highly expressed after stimulating human monocyte cell line THP-1 by phorbol-12-myristate-β-acetate （PMA）. Higher mRNA and supernate secretion levels of IL-1β, IL-6 and IL-8 were detected in SPC-A1 after being eocultured with TAMs. We also found that TLR1, TLR6 and TLR7 were up-regulated in SPC-A1 in the coculture system with TAMs. Meanwhile, TLRs signaling pathway proteins were also significantly activated. Moreover, pre-treatment with agonist ligands for TLR1, TLR6 and TLR7 could dramatically promote inductions of IL-1β, IL-6 and IL-8. Conclusions： These findings demonstrated that TAMs may enhance IL-1β, IL-6 and IL-8 expressions via TLRs signaling pathway. We conclude that TAMs contribute to maintain the inflammation microenvironment and ultimately promote the development and progression of lung cancer.展开更多
乙型肝炎病毒（hepatitis B virus,HBV）感染仍是全球重大公共卫生问题,HBV入侵机体后产生持续性感染涉及的免疫机制十分复杂,HBV在与宿主免疫系统的博弈中也进化出了一系列策略影响固有免疫效应,异常的固有免疫可能是导致病毒持续性感...乙型肝炎病毒（hepatitis B virus,HBV）感染仍是全球重大公共卫生问题,HBV入侵机体后产生持续性感染涉及的免疫机制十分复杂,HBV在与宿主免疫系统的博弈中也进化出了一系列策略影响固有免疫效应,异常的固有免疫可能是导致病毒持续性感染的诱因之一.病原体相关分子模式（pathogen associated molecular patterns,PAMPs）被模式识别受体（pathogens recognition recep-tors,PRRs）识别进而启动固有免疫应答.Toll样受体（Toll like receptors,TLRs）是PRRs家族的重要成员,TLRs介导的固有免疫应答在与HBV相互作用并引起HBV感染相关的免疫效应中发挥重要作用,关系到病毒的早期清除和随后特异性免疫应答的激活.本文就TLRs介导的固有免疫应答与HBV之间相互作用的研究进展以及基于TLRs免疫治疗策略的相关成果进行综述.展开更多
基金supported by National Natural Science Foundation of China (Grant Nos. 81301375, 31600655 and 81472889)the National Health and Family Planning Commission Research Foundation of China (Grant No. 2015117502)
文摘The major difficulties of human papillomavirus(HPV) treatment are its persistence and recurrence. The HPV E7 oncoprotein-loaded dendritic cells have been evaluated as cellular vaccine in previous reports. Plasmacytoid dendritic cells(pDCs) play an essential role of connecting the innate immune response and adaptive immune response in the immune system. But they function in HPV E7 loading is unclear. To investigate whether loading of the HPV type 6b, 11, and 16 E7 proteins affects the activity of pDCs, human peripheral blood-separated pDCs and mouse bone marrow-derived pDCs were pulsed with the HPV E7 proteins. The expression levels of CD40, CD80, CD86, and MHC II were significantly upregulated in pDCs upon HPV 6b/11 E7 protein pulse. The secretion and gene expression of type I IFN and IL-6 were both upregulated by HPV 6b/11 E7 proteins, more significant than HPV 16 E7 protein. The expression of essential factors of TLR signaling pathway and JNK/p38 MAP kinase signaling pathway were all increased in HPV 6b/11 E7 proteins pulsed pDCs. Our results suggest that HPV E7 proteins could promote the differentiation and maturation of pDCs and activate the TLR and MAPK pathway to induce host innate immune response. It might be conducive to explore novel immunotherapy targeting HPV infection with HPV E7 loaded pDC.
基金the technical support from National Key Clinical Department of Laboratory Medicine of Jiangsu Province Hospitalsupported by National Natural Science Foundation of China(No. 81272324,81371894)+1 种基金Key Laboratory for Medicine of Jiangsu Province of China(No.XK201114)project funded by the Priority Academic Program Development ofJiangsu Higher Education Institutions
文摘Background： Inflammation is often linked with the progress and poor outcome of lung cancer. The understanding of the relationship between tumor-associated macrophages （TAMs） and lung cancer cells involves in the underlying mechanism of inflammatory cytokine production. Toll-like receptors （TLRs） are engaged in promoting the production of pro-inflammatory cytokines and play an important role in tumor immunology. Methods： To investigate the mechanisms by which TAMs influence the production of pro-inflammatory cytoldnes in lung cancer cells, we established an in vitro coculture system using TAMs and human non- small cell lung cancer （NSCLC） cell line SPC-A1. Levels of interleukin （IL）-113, IL-6 and IL-8 in SPC-A1 were evaluated by RT-PCR and cytometric bead array assay after being cocultured with TAMs. Expression changes of TLRs and TLRs signaling pathway proteins in SPC-Al were further confirmed by RT-PCR and western blot. The level changes of IL-1β, IL-6 and IL-8 in SPC-Al were also detected after the stimulation of TLRs agonists. Results： We found that the phenotype markers of TAMs were highly expressed after stimulating human monocyte cell line THP-1 by phorbol-12-myristate-β-acetate （PMA）. Higher mRNA and supernate secretion levels of IL-1β, IL-6 and IL-8 were detected in SPC-A1 after being eocultured with TAMs. We also found that TLR1, TLR6 and TLR7 were up-regulated in SPC-A1 in the coculture system with TAMs. Meanwhile, TLRs signaling pathway proteins were also significantly activated. Moreover, pre-treatment with agonist ligands for TLR1, TLR6 and TLR7 could dramatically promote inductions of IL-1β, IL-6 and IL-8. Conclusions： These findings demonstrated that TAMs may enhance IL-1β, IL-6 and IL-8 expressions via TLRs signaling pathway. We conclude that TAMs contribute to maintain the inflammation microenvironment and ultimately promote the development and progression of lung cancer.
文摘乙型肝炎病毒（hepatitis B virus,HBV）感染仍是全球重大公共卫生问题,HBV入侵机体后产生持续性感染涉及的免疫机制十分复杂,HBV在与宿主免疫系统的博弈中也进化出了一系列策略影响固有免疫效应,异常的固有免疫可能是导致病毒持续性感染的诱因之一.病原体相关分子模式（pathogen associated molecular patterns,PAMPs）被模式识别受体（pathogens recognition recep-tors,PRRs）识别进而启动固有免疫应答.Toll样受体（Toll like receptors,TLRs）是PRRs家族的重要成员,TLRs介导的固有免疫应答在与HBV相互作用并引起HBV感染相关的免疫效应中发挥重要作用,关系到病毒的早期清除和随后特异性免疫应答的激活.本文就TLRs介导的固有免疫应答与HBV之间相互作用的研究进展以及基于TLRs免疫治疗策略的相关成果进行综述.
