Supplementary Materials and Methods from Detection and Characterization of a Novel Subset of CD8<sup>+</sup>CD57<sup>+</sup> T Cells in Metastatic Melanoma with an Incompletely Differentiated Phenotype
Richard C. WuShujuan LiuJessica ChaconSheng WuYufeng LiPariya SukhumalchandraJames L. MurrayJeffrey J. MolldremPatrick HwuHanspeter PircherGregory LizéeLaszlo G. Radvanyi
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Abstract KCl extracts of Melanoma 14, a human melanoma cell line grown in chemically defined serum‐free medium, inhibited leukocyte migration in 19/36 (53%) patients with malignant melanoma. Only 4/23 (17%) controls with non‐melanoma malignancies and 4/28 (14%) normal subjects with no history of cancer were similarly inhibited. Only 2/27 melanoma patients tested against KCl extracts of normal muscle tissue excised from the donor of Melanoma 14 were significantly inhibited. Patients with Stage I (localized) melanoma and patients with Stage III (generalized) melanoma reacted with roughly equal frequency but the number of patients in each group was too small for meaningful statistical analysis. Leukocytes from the donor of Melanoma 14 were tested in a completely autologous system against extracts of Melanoma 14 tissue culture cells and extracts of autologous muscle and were specifically inhibited by the Melanoma 14 tissue culture extract (Migration Index = 0.67) but not by the extract of normal muscle (Migration Index = 0.96). Only 7/32 (22%) melanoma patients were significantly inhibited by an extract of non‐melanoma tumor. These results suggest that melanoma‐associated antigens are present in soluble extracts of this tumor line. Such extracts could provide a continuing source of standard melanoma‐associated antigens for purification and chemical characterization and for diagnostic and prognostic tests in patients with malignant melanoma.
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Abstract This article provides a general introduction of materials characterization and describes the principles and applications of a limited number of techniques that are most commonly used to characterize the composition and structure of metals used in engineering systems. It briefly describes the classification of materials characterization methods including, bulk elemental characterization, bulk structural characterization, microstructural characterization, and surface characterization. Further, the article reviews the selection of materials characterization methods most commonly used with metals.
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An increasing number of microRNAs have been found to be involved in tumorigenesis, including melanoma tumorigenesis. miR-204-5p is down-regulated and functions as a tumor suppressor in many human malignant tumors. miR-204-5p expression is also decreased in melanoma tissues, but its biological roles and molecular mechanisms in malignant melanoma remain unclear. In this study, the aberrant down-regulation of miR-204-5p was detected in melanoma, especially in metastatic melanoma. miR-204-5p also served as a protective factor for the prognosis of melanoma patients. We determined that miR-204-5p suppresses cell proliferation, migration and invasion, and promotes cell apoptosis in melanoma. Matrix metalloproteinases-9 and B-cell lymphoma-2 are the functional targets of miR-204-5p, through which it plays an important biological role in malignant melanoma. The effect of miR-204-5p on malignant melanoma is verified using a xenograft model. We also determined that miR-204-5p increases 5-fluorouracil and cisplatin (DDP) chemosensitivity in malignant melanoma cells. This finding elucidates new functions and mechanisms for miR-204-5p in melanoma development, and provides potential therapeutic targets for the treatment of melanoma.
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This chapter contains sections titled: Introduction Modifications of PLA PLA Applications Characterization by FT-IR Characterization by Optical Microscopy Characterization by Electron Microscopy Characterization by Mechanical Testing Characterization of GPC Characterization of Dynamic Mechanical Thermal Analysis
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Materials characterization is a crucial issue in the development and application of new materials. Materials characterization aims to mine and acquire characteristic information and their evolution in the materials. It mainly includes three important topics which are microstructural characterization, properties characterization, and environmental degradation. In this paper, characterization techniques about these topics were discussed for C/SiC composites and a characterization system was preliminarily established. All these characterization research and their results further the better understanding of the relationship between microstructure and properties and of the failure mechanisms in the C/SiC composites.
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Melanoma is a common lethal skin cancer. Dissecting molecular mechanisms driving the malignancy of melanoma may uncover potential therapeutic targets. We previously identified miR-145-5p as an important tumor-suppressive microRNA in melanoma. Here, we further investigated the roles of long non-coding RNAs (lncRNAs) in melanoma. We identified RP11-705C15.3, a regulator of miR-145-5p, as an oncogenic lncRNA in melanoma. RP11-705C15.3 competitively bound miR-145-5p, relieved the repressive roles of miR-145-5p on its target NRAS, upregulated NRAS expression, and activated MAPK signaling. In vitro functional assays revealed that ectopic expression of RP11-705C15.3 promoted melanoma cell proliferation, inhibited apoptosis, and promoted migration and invasion. Silencing of RP11-705C15.3 repressed melanoma cell proliferation, induced apoptosis, and repressed migration and invasion. Notably, the roles of RP11-705C15.3 in melanoma cell proliferation, apoptosis, migration and invasion are reversed by miR-145-5p overexpression. In vivo functional assays revealed that RP11-705C15.3 promoted melanoma tumor growth and metastasis, which were also reversed by miR-145-5p overexpression. Furthermore, we investigated the expression of RP11-705C15.3 in clinical melanoma tissues and found that RP11-705C15.3 was increased in melanoma tissues. High expression of RP11-705C15.3 was positively correlated with thickness, ulceration, metastasis, and inferior overall survival. Taken together, our findings suggest RP11-705C15.3 as a novel oncogene in melanoma, and highlight that the RP11-705C15.3/miR-145-5p/NRAS/MAPK signaling axis may be potential therapeutic targets for melanoma.
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