Abstract:
:The mouse/human chimeric antibody Ch F11-39, recently generated by ourselves, shows the same high specificity and affinity for carcinoembryonic antigen (CEA) as those of its parental mouse monoclonal antibody. Ch F11-39 is capable of mediating antibody-dependent cell-mediated cytotoxicity (ADCC) with human peripheral blood lymphocytes (PBL). Interleukin-2 (IL-2) modulates the function of immunocytes, in particular inducing lymphokine-activated killer (LAK) cells and enhancing ADCC. In the present study, we therefore tested the combination immunotherapy of Ch F11-39 with LAK cells in vitro and in severe combined immunodeficiency (SCID) mice bearing human CEA-producing tumors. In vitro experiments using human gastric tumor cell lines, Ch F11-39 effectively mediated ADCC against CEA-positive MKN-45 cells, but not against CEA-negative cells. The specificity of ADCC for Ch F11-39 was demonstrated by experiments with irrelevant target cells or irrelevant antibody. ADCC activity of PBL with Ch F11-39 was enhanced by double after preincubation with IL-2 at 10 U/ml. The concentration of Ch F11-39 required for 50% maximal cell killing was about 0.25 microgram/ml at 10 U/ml of IL-2. Increasing ADCC was triggered by IL-2 earlier (1 day) than the generation of LAK cells (3 days). Control human IgG blocked the ADCC, suggesting that the enhancement of ADCC by IL-2 may be caused by activation of effector cells expressing Fc receptors. In vivo anti-tumor activity of combined immunotherapy was estimated using SCID mice inoculated s.c. with 1 x 10(7) MKN-45 cells. The i.v. administration of LAK cells and i.p. administration of Ch F11-39 and IL-2 produced a marked growth inhibition of MKN-45 tumors in SCID mice (about 50% reduction in tumor size as compared to the control untreated group, measured 15 days after treatment). In summary, the enhanced antitumor activity of Ch F11-39 with LAK cells suggests that it might be a useful immunotherapeutic reagent for CEA-expressing tumors.
journal_name
Anticancer Resjournal_title
Anticancer researchauthors
Senba T,Kuroki M,Arakawa F,Yamamoto T,Kuwahara M,Haruno M,Ikeda S,Matsuoka Ysubject
Has Abstractpub_date
1998-01-01 00:00:00pages
17-24issue
1Aeissn
0250-7005issn
1791-7530journal_volume
18pub_type
杂志文章abstract::A new cell line, CC3/CUHK3, was established from a squamous carcinoma of the uterine cervix from a Chinese patient. Light microscopy of the cell line revealed keratin and electron microscopy demonstrated tonofilaments and desmosomes, thereby confirming its epithelial nature. The population doubling time of CC3/CUHK3, ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1990-01-01 00:00:00
abstract::To evaluate the effects of dietary fats on breast cancer growth and metastasis, KPL-1 human breast carcinoma cells which have a propensity for axillary lymph node metastasis when inoculated into the thoracic mammary fat pad of female nude mice were examined. The mice were fed one of three semipurified diets containing...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1998-05-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1995-01-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1991-07-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
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更新日期:2012-10-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2015-11-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2008-05-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2003-09-01 00:00:00
abstract::The Feulgen-DNA content of squamous carcinoma cell nuclei from the human esophagus was assessed in punch biopsies from 47 untreated patients. Forty-four of the 47 biopsies (93.6%) demonstrated aneuploid cell populations, and the remaining 3 (6.4%) were non-diploid. Previous studies have demonstrated that in esophageal...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1989-05-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1996-05-01 00:00:00
abstract:BACKGROUND:To clarify the pathogenicity of multiple human papilloma virus (HPV) infection, we applied SSCP (single-strand DNA conformation polymorphism) analysis for cervical neoplastic lesions. MATERIALS AND METHODS:Two hundred and sixty-six cervical swab specimens from normal cervix (n=64), cervical dysplasia (n=95)...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2002-05-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.13089
更新日期:2019-01-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.14643
更新日期:2020-11-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章,评审
doi:
更新日期:2011-02-01 00:00:00
abstract:BACKGROUND:Pharmacologically active components of ginseng, particularly protopanaxadiol (PPD)-type ginsenosides, have potent anticancer effects, although their effects on highly malignant glioblastoma multiforme (GBM) have not been systemically evaluated. Identification of effective anticancer ginsenosides and further ...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2016-03-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2014-04-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.12162
更新日期:2017-12-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2005-01-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2012-03-01 00:00:00
abstract::In a retrospective study, immunohistochemical determinations of p53 were performed on paraffinised tissue sections of 243 patients with node negative breast cancer. These patients were primary treated in the years 1980-1986 at the UFK-Würzburg. A complete follow up could be performed in 92% of all cases. The median fo...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:1997-07-01 00:00:00
abstract:BACKGROUND:Multidrug resistance (MDR) is one of the major obstacles limiting the efficacy of cancer chemotherapy. Through screening a series of natural products, we have previously identified six naturally occurring bisbenzylisoquinoline alkaloids (BBIs) that possess potent activity to reverse P-glycoprotein (gp)-media...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2005-05-01 00:00:00
abstract:BACKGROUND/AIM:The mechanism responsible for B-cell translocation gene 1 (BTG1) down-regulation in breast carcinoma remains unknown. We examined the BTG1 expression status in breast carcinoma cells and investigated the mechanism underlying the observed alterations. MATERIALS AND METHODS:Four breast carcinoma cell line...
journal_title:Anticancer research
pub_type: 杂志文章
doi:10.21873/anticanres.13729
更新日期:2019-10-01 00:00:00
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journal_title:Anticancer research
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更新日期:2010-04-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
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更新日期:2004-09-01 00:00:00
abstract:BACKGROUND:Melanoma cells express the nuclear vitamin D receptor (VDR), indicating that malignant melanoma represents a promising target for treatment with 1,25-dihydroxyvitamin D3 (1,25(OH)(2)D(3)) or its analogs. We previously showed that some melanoma cell lines are resistant to the antiproliferative effects of 1,25...
journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2012-01-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2002-07-01 00:00:00
abstract::Metastatic urothelial carcinoma is one of the most fatal urological malignancies. Cisplatin-based systemic chemotherapy is the standard treatment for metastatic urothelial carcinoma, and there is little evidence to support metastasectomy. The aims of the study were to evaluate the efficacy of metastasectomy and to inv...
journal_title:Anticancer research
pub_type: 杂志文章
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更新日期:2016-10-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
doi:
更新日期:2014-05-01 00:00:00
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journal_title:Anticancer research
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更新日期:2018-03-01 00:00:00
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journal_title:Anticancer research
pub_type: 杂志文章
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更新日期:2008-03-01 00:00:00