Abstract:
:Cancer stem cells (CSCs) represent a population of cancer cells that possess unique self-renewal and differentiation characteristics required for tumorigenesis and are resistant to chemotherapy-induced apoptosis. Lung CSCs can be enriched by several markers including drug-resistant side population (SP), CD133(pos) and ALDH(high). Using human non-small cell lung adenocarcinoma cell lines and patient-derived primary tumor cells, we demonstrate that SP cells represent a subpopulation distinct from other cancer stem/progenitor cell (CS/PC) populations marked by CD133(pos) or ALDH(high). The non-CS/PCs and CS/PCs of each subpopulation are interconvertible. Epithelial-mesenchymal transition (EMT) promotes the formation of CD133(pos) and ALDH(high) CS/PC subpopulations while suppressing the SP CS/PC subpopulation. Rac1 GTPase activity is significantly increased in cells that have undergone EMT, and targeting Rac1 is effective in inhibiting the dynamic conversion of non-CS/PCs to CS/PCs, as well as the CS/PC activity. These results imply that various subpopulations of CS/PCs and non-CS/PCs may achieve a stochastic equilibrium in a defined microenvironment, and eliminating multiple subpopulations of CS/PCs and effectively blocking non-CS/PC to CS/PC transition, by an approach such as targeting Rac1, can be a more effective therapy.
journal_name
Cell Death Disjournal_title
Cell death & diseaseauthors
Akunuru S,James Zhai Q,Zheng Ydoi
10.1038/cddis.2012.93subject
Has Abstractpub_date
2012-07-19 00:00:00pages
e352issn
2041-4889pii
cddis201293journal_volume
3pub_type
杂志文章abstract::Recombinant human bone morphogenetic protein-2 (rhBMP-2) is widely used in the clinic for bone defect reconstruction because of its powerful osteoinductive capacity. However, commercially available rhBMP-2 requires a high concentration in the clinical setting for consistent bone formation. A high dose of rhBMP-2 induc...
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journal_title:Cell death & disease
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2018-06-28 00:00:00
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journal_title:Cell death & disease
pub_type: 杂志文章
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更新日期:2018-10-15 00:00:00
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journal_title:Cell death & disease
pub_type: 杂志文章
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更新日期:2019-06-12 00:00:00
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
pub_type: 杂志文章
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更新日期:2016-07-28 00:00:00
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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journal_title:Cell death & disease
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journal_title:Cell death & disease
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journal_title:Cell death & disease
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journal_title:Cell death & disease
pub_type: 杂志文章
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