Journal of immunotherapy : official journal of the Society for Biological Therapy最新文献

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Tumor-specific antigens of mouse tumors. 小鼠肿瘤特异性抗原。
Journal of immunotherapy : official journal of the Society for Biological Therapy Pub Date : 1992-10-01 DOI: 10.1097/00002371-199210000-00010
A B DeLeo
{"title":"Tumor-specific antigens of mouse tumors.","authors":"A B DeLeo","doi":"10.1097/00002371-199210000-00010","DOIUrl":"https://doi.org/10.1097/00002371-199210000-00010","url":null,"abstract":"<p><p>This article reviews the serological analysis of cell surface antigens of chemically induced sarcomas of murine origin. This analysis, which was aimed at molecular characterization of the highly restricted tumor specific transplantation antigens of sarcomas, led to the initial biochemical identification and characterization of p53. The results of this early study clearly pointed to p53 as playing a key role in cellular proliferation and transformation. Current research of the tumor-specific or -associated antigens of chemically-induced sarcomas and melanomas of murine origin is also discussed.</p>","PeriodicalId":77209,"journal":{"name":"Journal of immunotherapy : official journal of the Society for Biological Therapy","volume":"12 3","pages":"194-5"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00002371-199210000-00010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12616277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recognition of shared melanoma antigens by human tumor-infiltrating lymphocytes. 人类肿瘤浸润淋巴细胞对黑色素瘤共有抗原的识别。
Journal of immunotherapy : official journal of the Society for Biological Therapy Pub Date : 1992-10-01 DOI: 10.1097/00002371-199210000-00013
S L Topalian, S S Hom, Y Kawakami, M Mancini, D J Schwartzentruber, R Zakut, S A Rosenberg
{"title":"Recognition of shared melanoma antigens by human tumor-infiltrating lymphocytes.","authors":"S L Topalian,&nbsp;S S Hom,&nbsp;Y Kawakami,&nbsp;M Mancini,&nbsp;D J Schwartzentruber,&nbsp;R Zakut,&nbsp;S A Rosenberg","doi":"10.1097/00002371-199210000-00013","DOIUrl":"https://doi.org/10.1097/00002371-199210000-00013","url":null,"abstract":"<p><p>We have established that melanomas express shared tumor antigens (Ags) that can be recognized by T cells if presented in the context of self-MHC molecules. Tumor-infiltrating lymphocytes (TILs) from six melanoma patients were tested for lysis of large panels of HLA-matched or unmatched targets representing a variety of tissue types. Lysis was specific for allogeneic melanomas sharing at least one HLA-A, -B, or -C Ag with TILs, and demonstrated commonly expressed tumor Ags. Similar findings were obtained when cytokine secretion by TILs was used to indicate specific Ag recognition. Transfection of the HLA-A2.1 gene into HLA-A2- melanoma lines conferred susceptibility to lysis by HLA-A2 restricted melanoma TILs, demonstrating expression of common tumor Ags among patients of diverse HLA types. These findings have important implications for developing broadly applicable cancer immunotherapies such as vaccines.</p>","PeriodicalId":77209,"journal":{"name":"Journal of immunotherapy : official journal of the Society for Biological Therapy","volume":"12 3","pages":"203-6"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00002371-199210000-00013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12617377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 23
Beta 1-integrins on melanoma clones regulate the interaction with autologous cytolytic T-cell clones. 黑色素瘤克隆上的β 1整合素调节与自体细胞溶解性t细胞克隆的相互作用。
Journal of immunotherapy : official journal of the Society for Biological Therapy Pub Date : 1992-10-01 DOI: 10.1097/00002371-199210000-00008
A Anichini, R Mortarini, G Parmiani
{"title":"Beta 1-integrins on melanoma clones regulate the interaction with autologous cytolytic T-cell clones.","authors":"A Anichini,&nbsp;R Mortarini,&nbsp;G Parmiani","doi":"10.1097/00002371-199210000-00008","DOIUrl":"https://doi.org/10.1097/00002371-199210000-00008","url":null,"abstract":"<p><p>Tumor clones isolated from the same subcutaneous metastatic lesion of a melanoma patient were used to investigate the potential role of beta 1-integrins (VLA) in the lysability of neoplastic cells by autologous CD3+, WT31+, CD8+ cytotoxic T-cell clones. Phenotypic analysis of melanoma clones for expression of VLA molecules revealed a subset of clones with high expression of VLA-2, VLA-5, and VLA-6. This subset was also characterized by increased susceptibility to lysis by tumor-specific and nonspecific cytotoxic T-lymphocytes from either TILs or PBLs. Blocking assays with monoclonal antibodies indicated that anti-VLA-2, -5, and -6 antibodies could significantly reduce the lysis of VLA-2+, VLA-5+, and VLA-6+ melanoma clones by either specific and nonspecific CTLs. By contrast, no inhibition was seen on lysis of VLA-2-, VLA-5-, and VLA-6-negative tumor cells. These data indicate that expression of some beta 1-integrins on human melanoma can influence the specific and nonspecific T-cell-mediated recognition of neoplastic cells.</p>","PeriodicalId":77209,"journal":{"name":"Journal of immunotherapy : official journal of the Society for Biological Therapy","volume":"12 3","pages":"183-6"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00002371-199210000-00008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12454576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Expansion of major histocompatibility complex-restricted antimelanoma cytotoxic T-cell lymphocyte clones with identical T-cell receptor from tumor-infiltrating lymphocytes. 从肿瘤浸润淋巴细胞中扩增具有相同t细胞受体的主要组织相容性复合体限制抗黑色素瘤细胞毒性t细胞克隆。
Journal of immunotherapy : official journal of the Society for Biological Therapy Pub Date : 1992-10-01 DOI: 10.1097/00002371-199210000-00014
M Sensi, C Castelli, S Salvi, A Mazzocchi, R Mortarini, G Nicolini, A Anichini, G Parmiani
{"title":"Expansion of major histocompatibility complex-restricted antimelanoma cytotoxic T-cell lymphocyte clones with identical T-cell receptor from tumor-infiltrating lymphocytes.","authors":"M Sensi,&nbsp;C Castelli,&nbsp;S Salvi,&nbsp;A Mazzocchi,&nbsp;R Mortarini,&nbsp;G Nicolini,&nbsp;A Anichini,&nbsp;G Parmiani","doi":"10.1097/00002371-199210000-00014","DOIUrl":"https://doi.org/10.1097/00002371-199210000-00014","url":null,"abstract":"<p><p>Tumor-infiltrating lymphocytes (TILs) were isolated from a subcutaneous metastasis of melanoma and cytotoxic T-cell lymphocyte (CTL) lines were obtained by sensitizing in vitro four separate aliquots of TILs with autologous tumor cells and recombinant interleukin-2. All CTL lines were predominantly WT31+, CD3+, and CD8+ and displayed a preferential cytotoxic activity against the autologous tumor. T-cell receptor (TCR) composition was analyzed by using the polymerase chain reaction with 5' variable region (V alpha or V beta)-specific primers and 3' constant (C alpha or C beta) primers. The entire repertoire of the V alpha and V beta gene families tested was present in fresh TILs and in the CTL lines, although, in the latter, consistent quantitative variations in transcripts of several V alpha and V beta occurred. CTL clones that exhibited CD3-dependent and major histocompatibility complex-restricted killing of the autologous melanoma were isolated from the four TIL cultures. TCR analysis indicated that, independently from the culture of origin, only two combinations of V alpha and V beta gene families were present in the majority of these CTL clones. These V alpha and V beta gene families were not found in a panel of CTL clones that did not lyse the autologous tumor. This study indicates that recognition of melanoma antigens can strongly select for certain types of TCR-bearing T-lymphocytes.</p>","PeriodicalId":77209,"journal":{"name":"Journal of immunotherapy : official journal of the Society for Biological Therapy","volume":"12 3","pages":"207-11"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00002371-199210000-00014","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12505310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Proinflammatory and antiinflammatory cytokines in multiple sclerosis and central nervous system acquired immunodeficiency syndrome. 促炎和抗炎细胞因子在多发性硬化和中枢神经系统获得性免疫缺陷综合征中的作用。
Journal of immunotherapy : official journal of the Society for Biological Therapy Pub Date : 1992-10-01 DOI: 10.1097/00002371-199210000-00004
J E Merrill
{"title":"Proinflammatory and antiinflammatory cytokines in multiple sclerosis and central nervous system acquired immunodeficiency syndrome.","authors":"J E Merrill","doi":"10.1097/00002371-199210000-00004","DOIUrl":"https://doi.org/10.1097/00002371-199210000-00004","url":null,"abstract":"<p><p>While certain cytokines such as interleukin-1 (IL-1), tumor necrosis factor-alpha (TNF-alpha), IL-6, and transforming growth factor-beta (TGF-beta) may be involved in pro- and anti-inflammatory events in the central nervous system (CNS) of patients with multiple sclerosis (MS) and CNS acquired immunodeficiency syndrome (AIDS), there is not uniform consensus as to whether they are elevated or even detectable in all compartments of the body such as serum, cerebrospinal fluid (CSF), and tissue. Furthermore, if they are elevated in these diseases, there are no data as to whether they regulate the disease process itself. Myelin damage in MS is a punctate demyelination; in AIDS, it is a diffuse myelin pallor or dysmyelination. Oligodendrocytes are destroyed in MS but not CNS AIDS, suggesting a different mechanism for myelin loss in the two diseases. These different pathologies may provide clues about the role of macrophages, microglia, and/or the toxic products they produce in putatively giving rise to myelin damage. The stimuli that trigger such a destructive response by macrophages or glial cells and/or the regulation of the toxic events in the two diseases we would predict to be different. In MS, an effector cell-mediated lesion production and oligodendrocyte cell destruction seem to occur. We hypothesize that the effector is the inflammatory blood macrophage and/or microglial cell induced and promoted to its cytotoxic activity by a collaboration of neurotransmitters and cytokines. In CNS AIDS, virus-induced toxic products of glia and their diffusion through white and gray matter areas of the brain have been suggested. Such soluble mediators would then compromise metabolic processes of neurons and glia without widespread target cell loss.</p>","PeriodicalId":77209,"journal":{"name":"Journal of immunotherapy : official journal of the Society for Biological Therapy","volume":"12 3","pages":"167-70"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00002371-199210000-00004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12616272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 116
Immunobiology of primary murine melanomas. 原发性小鼠黑色素瘤的免疫生物学研究。
Journal of immunotherapy : official journal of the Society for Biological Therapy Pub Date : 1992-10-01 DOI: 10.1097/00002371-199210000-00009
C Donawho, R Evans, M L Kripke
{"title":"Immunobiology of primary murine melanomas.","authors":"C Donawho,&nbsp;R Evans,&nbsp;M L Kripke","doi":"10.1097/00002371-199210000-00009","DOIUrl":"https://doi.org/10.1097/00002371-199210000-00009","url":null,"abstract":"<p><p>Primary cutaneous melanomas can be induced in inbred mice by applying a dose of dimethylbenz[a]anthracene to the skin of 4-day-old mice, and then applying repeated doses of a tumor promoter to the same site over a long period of time. Preliminary experiments suggest that the final incidence of melanomas is strongly influenced by the age at which the initiating dose of carcinogen is applied. Melanomas induced by this method in C3H mice are immunogenic and exhibit a high degree of cross-reactivity when tested by immunization and challenge in vivo. Exposing the mice to ultraviolet (UV) radiation during carcinogenesis dramatically accelerates the appearance of melanoma. We are attempting to determine how UV radiation potentiates melanoma induction by studying the growth of melanoma cells transplanted into UV-irradiated skin. Our studies suggest that UV irradiation accelerates the outgrowth of melanoma cells by means of a local, immunosuppressive effect on the skin. However, this effect is distinct from the ability of UV irradiation to alter epidermal Langerhans cells and interfere with the induction of contact hypersensitivity responses. We postulate that UV irradiation augments melanoma development by interfering with the efferent arm of the immune response in the UV-irradiated site.</p>","PeriodicalId":77209,"journal":{"name":"Journal of immunotherapy : official journal of the Society for Biological Therapy","volume":"12 3","pages":"187-93"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00002371-199210000-00009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12616276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Melanoma and Biology of the Neural Crest. 1992 Keystone Symposium. Taos, New Mexico, February 1-8, 1992. 黑色素瘤与神经嵴生物学,1992年基石研讨会。陶斯,新墨西哥州,1992年2月1日至8日。
{"title":"Melanoma and Biology of the Neural Crest. 1992 Keystone Symposium. Taos, New Mexico, February 1-8, 1992.","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":77209,"journal":{"name":"Journal of immunotherapy : official journal of the Society for Biological Therapy","volume":"12 3","pages":"153-217"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12533397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Growth factors, receptor kinases, and protein tyrosine phosphatases in normal and malignant melanocytes. 正常和恶性黑色素细胞中的生长因子、受体激酶和蛋白酪氨酸磷酸酶。
Journal of immunotherapy : official journal of the Society for Biological Therapy Pub Date : 1992-10-01 DOI: 10.1097/00002371-199210000-00002
R Halaban, B Fan, J Ahn, Y Funasaka, H Gitay-Goren, G Neufeld
{"title":"Growth factors, receptor kinases, and protein tyrosine phosphatases in normal and malignant melanocytes.","authors":"R Halaban,&nbsp;B Fan,&nbsp;J Ahn,&nbsp;Y Funasaka,&nbsp;H Gitay-Goren,&nbsp;G Neufeld","doi":"10.1097/00002371-199210000-00002","DOIUrl":"https://doi.org/10.1097/00002371-199210000-00002","url":null,"abstract":"<p><p>Normal human melanocyte proliferation and differentiation is dependent on stimulation of one of three growth factor/receptor systems. They are fibroblast growth factor (FGF), hepatocyte growth factor (HGF), and mast cell growth factor (MGF), which activate the FGF receptor, c-Met, and c-Kit, respectively, known to be receptor tyrosine kinases. In contrast, human melanoma cells from primary nodular and metastatic lesions grow autonomously partially because of inappropriate production of basic FGF (bFGF) and continuous activation of the bFGF-receptor kinase. Activation of transmembrane receptor tyrosine kinases in melanocytes stimulates not only proliferation but also the expression of pigmentation. Melanoma cells constitutively express several tyrosyl-phosphorylated proteins that in normal melanocytes are stimulated in response to growth factors. This high level of phosphorylation was not due to either the presence of constitutively active Kit kinase and Met kinase nor to the absence of any of several known protein tyrosine phosphatases. Because bFGF by itself does not transform melanocytes to melanomas, there must be additional cooperating factors that confer the malignant phenotype to pigment cells.</p>","PeriodicalId":77209,"journal":{"name":"Journal of immunotherapy : official journal of the Society for Biological Therapy","volume":"12 3","pages":"154-61"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00002371-199210000-00002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12616271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 44
In vitro growth patterns of normal human melanocytes and melanocytes from different stages of melanoma progression. 正常人类黑色素细胞和黑色素瘤进展不同阶段黑色素细胞的体外生长模式。
Journal of immunotherapy : official journal of the Society for Biological Therapy Pub Date : 1992-10-01 DOI: 10.1097/00002371-199210000-00012
U Graeven, M Herlyn
{"title":"In vitro growth patterns of normal human melanocytes and melanocytes from different stages of melanoma progression.","authors":"U Graeven,&nbsp;M Herlyn","doi":"10.1097/00002371-199210000-00012","DOIUrl":"https://doi.org/10.1097/00002371-199210000-00012","url":null,"abstract":"<p><p>Based on the clinicopathological classification of distinct stages of tumor progression in the melanocytic system, we have investigated the in vitro growth patterns and requirements of normal melanocytes and melanocytes isolated from different lesions of melanoma progression. Normal melanocytes depend on a combination of insulin-like growth factor (IGF-I) or insulin, 12-O-tetradecanoyl phorbol-13-acetate (TPA), alpha-melanocyte stimulating hormone (alpha-MSH), and basic fibroblast growth factor (bFGF) for in vitro proliferation. Nevus cells display a reduced need for TPA and are largely independent of bFGF. Both melanocytes and nevus cells have a finite lifespan in vitro and show no spontaneous transformation, whereas melanoma cells can be grown indefinitely in vitro. Cells from primary melanomas require only IGF-I or insulin for continuous growth, and metastatic melanoma cells can proliferate in base medium without addition of any growth factors or proteins. This progressive growth autonomy is paralleled by an increased competence for endogenous growth factor production. Among these growth factors, bFGF and melanoma growth-stimulatory activity (MGSA) act in an autocrine fashion. Melanoma-derived growth factors without apparent autocrine function, such as platelet-derived growth factor A and B (PDGF-A and PDGF-B) and transforming growth factor-alpha (TGF-alpha), might still be important for melanoma growth by stimulating surrounding normal fibroblasts, endothelial cells, or keratinocytes to secrete growth-promoting factors. The significance of growth factors such as transforming growth factor-beta (TGF-beta) and melanoma-inhibiting activity II (MIA II), which have a potentially negative autocrine function, remains unknown. The successful propagation of melanocytic cells of all stages of melanoma progression has yielded valuable insight into the mechanisms of growth regulation and malignant transformation.</p>","PeriodicalId":77209,"journal":{"name":"Journal of immunotherapy : official journal of the Society for Biological Therapy","volume":"12 3","pages":"199-202"},"PeriodicalIF":0.0,"publicationDate":"1992-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00002371-199210000-00012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12617376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 45
Polyadenylic: polyuridylic acid-induced determinants of host resistance to cytomegalovirus and their potentiation by hyperthermia. 多腺苷:多尿苷酸诱导的宿主对巨细胞病毒抗性的决定因素及其在高温下的增强作用。
Journal of immunotherapy : official journal of the Society for Biological Therapy Pub Date : 1992-08-01 DOI: 10.1097/00002371-199208000-00005
B K Lee, M Mohrman, M J Odean, A G Johnson, A Morin, E Deschamps de Paillette
{"title":"Polyadenylic: polyuridylic acid-induced determinants of host resistance to cytomegalovirus and their potentiation by hyperthermia.","authors":"B K Lee,&nbsp;M Mohrman,&nbsp;M J Odean,&nbsp;A G Johnson,&nbsp;A Morin,&nbsp;E Deschamps de Paillette","doi":"10.1097/00002371-199208000-00005","DOIUrl":"https://doi.org/10.1097/00002371-199208000-00005","url":null,"abstract":"The ability of spleen cells from poly A:poly U-treated mice to inhibit murine cytomegalovirus (MCMV) replication in confluent monolayer cells of secondary mouse embryo fibroblasts (MEFs) cultured at 37 and 40 degrees C was investigated. When spleen cells from BALB/c mice injected 48 h earlier with poly A:poly U were added to MEFs infected 2 h previously with MCMV, 37% less plaques were observed than in cultures containing control cells. Of interest, the poly A:poly U-induced antiviral activity at the elevated temperature (40 degrees C) resulted in a further drop to 61% in MCMV-induced plaques compared to those of the normothermic (37 degrees C) cultures. The antiviral function of spleen cells induced by poly A:poly U was evident in the supernatant fluid when cultured for 48 h at 37 degrees C. MCMV-induced plaques were reduced to 52 and 5% of controls in the plaque assays performed at 37 and 40 degrees C, respectively. Supernatant fluids generated at 40 degrees C, however, inhibited MCMV replication only when incubated at 40 degrees C. No direct inhibitory effect of the supernatant fluids on MCMV was evident; rather, inhibition was effected directly on the MEFs. The NK cell fraction of spleen cells from poly A:poly U-treated mice alone showed only a slight inhibitory effect at 40 degrees C. However, in the presence of the supernatant fluid from poly A:poly U-exposed spleen cells, the antiviral activity of NK cells was significantly increased both at 37 and 40 degrees C. The cellular source of the culture fluid showing poly A:poly U-induced antiviral activity appeared to be in the T-cell population. It was completely neutralized by monoclonal anti-IFN gamma antibody but not by anti-IFN beta, anti-IL4, anti-transforming growth factor, or anti-prostaglandin E2. In conclusion, these data document the ability of spleen cells from poly A:poly U-treated mice to inhibit MCMV replication and this activity is potentiated by hyperthermic conditions. The antiviral function of poly A:poly U-treated spleen cells appeared to be due mainly to the action of IFN gamma produced by T cells. The enhanced antiviral activity by hyperthermia appeared to be related to the action of IFN gamma rather than its production.","PeriodicalId":77209,"journal":{"name":"Journal of immunotherapy : official journal of the Society for Biological Therapy","volume":"12 2","pages":"105-14"},"PeriodicalIF":0.0,"publicationDate":"1992-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1097/00002371-199208000-00005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12498443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
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