| Quantum dots (QDs) restrain human cervical carcinoma HeLa cell proliferation through inhibition of the ROCK-c-Myc signaling. | |
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MedLine Citation:
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PMID: 23370637 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Cancers often cause significant morbidity and even death to patients. To date, conventional therapies, such as chemotherapy, radiation and surgery, are often limited; meanwhile, novel anticancer therapeutics are urgently needed to improve clinical treatments. Rapid application of nanotechnology and nanomaterials represents a promising vista for the development of anti-cancer therapeutics. However, how to integrate the novel properties of nanotechnology and nanomaterials into cancer treatment warrants close investigation. In the current study, we report a novel finding about the inhibitory effect of CdSe quantum dots (QDs) on Rho-associated kinase (ROCK) activity in cervical carcinoma HeLa cells associated with the attenuation of the ROCK-c-Myc signaling. We mechanistically demonstrated that QD-conducted ROCK inhibition greatly diminished c-Myc protein stability due to reduced phosphorylation, and also suppressed its activity in transcribing target genes (e.g. HSPC111). Thus, the treatment of QDs greatly restrained HeLa cell growth by inducing cell cycle arrest at G1 phase due to the reduced ability of c-Myc in driving cell proliferation. Additionally, since HSPC111, one of the c-Myc targets, is involved in regulating cell growth through ribosomal biogenesis and assembly, the downregulation of HSPC111 could also contribute to diminished proliferation in HeLa cells upon QD treatment. These results together suggested that inhibition of ROCK activity or ROCK-mediated c-Myc signaling in tumor cells upon QD treatment might represent a promising strategy to restrain tumor progression for human cervical carcinoma. |
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Authors:
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Liqun Chen; Guangbo Qu; Changwen Zhang; Shuping Zhang; Jiuyang He; Nan Sang; Sijin Liu |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2013-2-1 |
Journal Detail:
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Title: Integrative biology : quantitative biosciences from nano to macro Volume: - ISSN: 1757-9708 ISO Abbreviation: Integr Biol (Camb) Publication Date: 2013 Feb |
Date Detail:
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Created Date: 2013-2-1 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101478378 Medline TA: Integr Biol (Camb) Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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College of Environment and Resource, Shanxi University, Taiyuan, Shanxi 030006, China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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