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排序方式: 共有137条查询结果,搜索用时 15 毫秒
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Koji Adachi Paul Belser Hans Bender Derui Li Ulrich Rodeck Etty N. Benveniste David Woo Wolff H. Schmiegel Dorothee Herlyn 《Cancer immunology, immunotherapy : CII》1992,34(6):370-376
Summary Recombinant tumor necrosis factor (rTNF; optimal dose 1000 U/ml) significantly increased the density of epidermal growth factor receptor (EGF-R) in three of four glioma cell lines in culture as determined by binding analysis of anti-EGF-R monoclonal antibody (mAb) 425. Since enhancement of EGF-R expression by rTNF- was inhibited when cells were treated with the protein synthesis inhibitor cycloheximide, the effects of rTNF may be protein-synthesis-dependent. The dose of rTNF that was optimal for up-regulation of EGF-R on glioma cells did not inhibit the growth of these cells.125I-labeled mAb 425 lysed glioma cells in culture following its internalization into the cells. After glioma cells had been treated with rTNF, the growth-inhibitory effects of the mAb were significantly enhanced, probably a reflection of the increase in EGF-R density on the tumor cell surfaces. The rTNF effects were specific to the EGF-R and did not affect unrelated glioma-associated antigens. In our previous clinical trials,125I-labeled mAb 425 showed immunotherapeutic effects in glioma patients. The present study provides the basis for considerations of combined immunotherapy of glioma patients with125I-labeled mAb 425 and rTNF. 相似文献
3.
Isolation and characterization of a carcinoma-associated antigen 总被引:5,自引:0,他引:5
A H Ross D Herlyn D Iliopoulos H Koprowski 《Biochemical and biophysical research communications》1986,135(1):297-303
GA733 is a murine IgG2a monoclonal antibody (MAb) against human gastric carcinoma and is highly tumoricidal in nude mice. The GA733 antigen is a cell surface protein with two subunits of 30,000 and 40,000 daltons. The antigen isolated by immunoaffinity chromatography consists mainly of the 30,000-dalton subunit which bears the GA733 epitope. This subunit displayed several isoelectric points between 6.9 and 7.7. Anti-colon carcinoma MAb 17-1A also detects this antigen, but probably binds to a different epitope. 相似文献
4.
Proton NMR and fast-atom bombardment mass spectrometry analysis of the melanoma-associated ganglioside 9-O-acetyl-GD3 总被引:2,自引:0,他引:2
J Thurin M Herlyn O Hindsgaul N Str?mberg K A Karlsson D Elder Z Steplewski H Koprowski 《The Journal of biological chemistry》1985,260(27):14556-14563
A glycolipid antigen, detected by a monoclonal antibody (ME 311) obtained by immunizing mice with a human metastatic melanoma cell line (WM 46), was isolated and structurally characterized. Using immunostaining on thin-layer chromatograms for monitoring, 1.0 mg of a pure alkali-labile disialoganglioside was obtained from 23 g of packed melanoma cells (WM 164). Fractionation of the lipid extract was done on DEAE-Sepharose columns into total disialogangliosides which were repeatedly separated by high-pressure liquid chromatography. On mild alkaline treatment, the ganglioside was converted to a slower migrating species identical with a ganglioside GD3 isolated from the same source (Neu5Ac alpha 2----8Neu5Ac alpha 2----3Gal beta 1----4Glc beta 1----1-cer-amide) and specifically detected by monoclonal antibody R24. Comparison of the two gangliosides by fast-atom bombardment mass spectrometry (revealing an acetyl group on the terminal sialic acid on the alkali-labile species) and by 1H NMR (indicating the position of the acetyl group) suggested the following structure: Neu5,9Ac2 alpha 2----8Neu5Ac alpha 2----3Gal beta 1----4Glc beta 1----1-ceramide. This is identical with a ganglioside proposed earlier to exist in melanoma cells (Cheresh, D. A., Varki, A. P., Varki, N. M., Stallcup, W. B., Levine, J., and Reisfeld, R. A. (1984) J. Biol. Chem. 259, 7453-7459). Immunostaining with ME 311 antibody of cell extracts on thin-layer chromatography chromatograms revealed only this ganglioside in the melanoma cells, while normal human brain was negative. However, in one of the total ganglioside extracts tested for presence of binding with antibody ME 311, three gangliosides were found to bind. No evidence was obtained for the presence of the antigenic epitope in mucins or glycoproteins of the melanoma cells. 相似文献
5.
Manfred Brockhaus John L. Magnani Meenhard Herlyn Magdalena Blaszczyk Zenon Steplewski Hilary Koprowski Victor Ginsburg 《Archives of biochemistry and biophysics》1982,217(2):647-651
Four hybridomas obtained from mice immunized with human adenocarcinomas of colon or stomach produce antibodies that bind specifically in solid-phase radioimmunoassay to the ceramide pentasaccharide that contains the lacto-N-fucopentaose III sequence of sugars. Binding of the antibodies to the glycolipid is inhibited by lacto-N-fucopentaose III, but not by structurally related oligosaccharides. The antibodies bind to glycolipids of erythrocytes, granulocytes, and certain normal and malignant tissues. 相似文献
6.
H Koprowski Z Steplewski K Mitchell M Herlyn D Herlyn P Fuhrer 《Somatic cell genetics》1979,5(6):957-971
Hybridoma cells which secrete colorectal carcinoma-specific antibodies have been produced and used to study the antigenic structure of these tumor cells. Nineteen antibodies have been studied in detail, and 15 of these are colorectal carcinoma specific. Only two antibodies reactive with carcinoembryonic antigen (CEA) have been discovered and five other antibodies that react with distinct epitopes on the cell surface have been defined. Several antigens with distinct molecular characteristics have been shown to exist by use of hybridoma antibodies. Six hybridoma antibodies have been shown to mediate antibody-dependent cell-mediated cytotoxicity (ADCC). 相似文献
7.
Mathias Weber Alexandra R. Wey-Fabrizius Lars Podsiadlowski Alexander Witek Ralph O. Schill László Sugár Holger Herlyn Thomas Hankeln 《Molecular phylogenetics and evolution》2013,66(1):182-189
The metazoan taxon Syndermata (Monogononta, Bdelloidea, Seisonidea, Acanthocephala) comprises species with vastly different lifestyles. The focus of this study is on the phylogeny within the syndermatan subtaxon Acanthocephala (thorny-headed worms, obligate endoparasites). In order to investigate the controversially discussed phylogenetic relationships of acanthocephalan subtaxa we have sequenced the mitochondrial (mt) genomes of Echinorhynchus truttae (Palaeacanthocephala), Paratenuisentis ambiguus (Eoacanthocephala), Macracanthorhynchus hirudinaceus (Archiacanthocephala), and Philodina citrina (Bdelloidea). In doing so, we present the largest molecular phylogenetic dataset so far for this question comprising all major subgroups of Acanthocephala. Alongside with publicly available mt genome data of four additional syndermatans as well as 18 other lophotrochozoan (spiralian) taxa and one outgroup representative, the derived protein-coding sequences were used for Maximum Likelihood as well as Bayesian phylogenetic analyses. We achieved entirely congruent results, whereupon monophyletic Archiacanthocephala represent the sister taxon of a clade comprising Eoacanthocephala and monophyletic Palaeacanthocephala (Echinorhynchida). This topology suggests the secondary loss of lateral sensory organs (sensory pores) within Palaeacanthocephala and is further in line with the emergence of apical sensory organs in the stem lineage of Archiacanthocephala. 相似文献
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9.
Batool Shannan Quan Chen Andrea Watters Michela Perego Clemens Krepler Rakhee Thombre Ling Li Geena Rajan Scott Peterson Phyllis A. Gimotty Melissa Wilson Katherine L. Nathanson Tara C. Gangadhar Lynn M. Schuchter Ashani T. Weeraratna Meenhard Herlyn Adina Vultur 《Pigment cell & melanoma research》2016,29(3):317-328
Targeted therapies for mutant BRAF metastatic melanoma are effective but not curative due to acquisition of resistance. PI3K signaling is a common mediator of therapy resistance in melanoma; thus, the need for effective PI3K inhibitors is critical. However, testing PI3K inhibitors in adherent cultures is not always reflective of their potential in vivo. To emphasize this, we compared PI3K inhibitors of different specificity in two‐ and three‐dimensional (2D, 3D) melanoma models and show that drug response predictions gain from evaluation using 3D models. Our results in 3D demonstrate the anti‐invasive potential of PI3K inhibitors and that drugs such as PX‐866 have beneficial activity in physiological models alone and when combined with BRAF inhibition. These assays finally help highlight pathway effectors that could be involved in drug response in different environments (e.g. p4E‐BP1). Our findings show the advantages of 3D melanoma models to enhance our understanding of PI3K inhibitors. 相似文献
10.
Zeynep Eroglu Sheri L. Holmen Qing Chen Nikhil I. Khushalani Ravi Amaravadi Reena Thomas Kamran A. Ahmed Hussein Tawbi Sunandana Chandra Joseph Markowitz Inna Smalley James K. C. Liu Yian Ann Chen Yana G. Najjar Florian A. Karreth Daniel Abate‐Daga Isabella C. Glitza Jeffrey A. Sosman Vernon K. Sondak Marcus Bosenberg Meenhard Herlyn Michael B. Atkins Harriet Kluger Kim Margolin Peter A. Forsyth Michael A. Davies Keiran S. M. Smalley 《Pigment cell & melanoma research》2019,32(3):458-469
In February 2018, the Melanoma Research Foundation and the Moffitt Cancer Center hosted the Second Summit on Melanoma Central Nervous System (CNS) Metastases in Tampa, Florida. In this white paper, we outline the current status of basic science, translational, and clinical research into melanoma brain metastasis development and therapeutic management. We further outline the important challenges that remain for the field and the critical barriers that need to be overcome for continued progress to be made in this clinically difficult area. 相似文献