Neoplastic-like transformation effect of single-walled and multi-walled-carbon nanotubes compared to asbestos on human lung small airway epithelial cells
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2013/08/01
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Description:Accumulating evidence indicates that carbon nanotubes (CNTs) are biopersistent and can cause lung damage. With similar fibrous morphology and mode of exposure to asbestos, a known human carcinogen, growing concern has arisen for elevated risk of CNT-induced lung carcinogenesis; however, relatively little is known about the long-term carcinogenic effect of CNT. Neoplastic transformation is a key early event leading to carcinogenesis. We studied the ability of single- and multi-walled CNTs to induce neoplastic transformation of human lung epithelial cells compared to asbestos. Long-term (6 month) exposure of the cells to occupationally relevant concentrations of CNT in culture caused a neoplastic-like transformation phenotype as demonstrated by increased cell proliferation, anchorage-independent growth, invasion and angiogenesis. Whole genome expression signature and protein expression analyses showed that single- and multi-walled CNTs shared similar signaling signatures which were distinct from asbestos. These results provide novel toxicogenomic information and suggest distinct particle-associated mechanisms of neoplasia promotion induced by CNTs and asbestos. [Description provided by NIOSH]
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ISSN:1743-5390
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Pages in Document:485-507
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Volume:8
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Issue:5
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NIOSHTIC Number:nn:20042545
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Citation:Nanotoxicology 2013 Aug; 8(5):485-507
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Contact Point Address:Liying Wang, HELD/PPRB, National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV 26505
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Email:lmw6@cdc.gov
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Federal Fiscal Year:2013
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Peer Reviewed:True
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Source Full Name:Nanotoxicology
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Main Document Checksum:urn:sha-512:f435f80a20f753165780a82b23ce9b3ea55189dd2eaa4c51f0aa038df9fdf948d8aba779d1d4374165810bf07e156202a838dbfd85526a2d9ad4cbfad6206582
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