Abstract:
BACKGROUND:Breast cancer stem cells with a CD44(+)CD24(-) phenotype are the origin of breast tumors. Strong CD44 expression in this population indicates its important role in maintaining the stem cell phenotype. Previous studies show that CD44 down-regulation causes CD44(+)CD24(-) breast cancer stem cells to differentiate into non-stem cells that are sensitive to antitumor drugs and lose many characteristics of the original cells. In this study, we determined tumor suppression in non-obese severe combined immunodeficiency mice using CD44 shRNA therapy combined with doxorubicin treatment. METHODS:Tumor-bearing non-obese severe combined immunodeficiency mice were established by injection of CD44(+)CD24(-) cells. To track CD44(+)CD24(-) cells, green fluorescence protein was stably transduced using a lentiviral vector prior to injection into mice. The amount of CD44 shRNA lentiviral vector used for transduction was based on CD44 down-regulation by in vitro CD44 shRNA transduction. Mice were treated with direct injection of CD44 shRNA lentiviral vector into tumors followed by doxorubicin administration after 48 hours. The effect was evaluated by changes in the size and weight of tumors compared with that of the control. RESULTS:The combination of CD44 down-regulation and doxorubicin strongly suppressed tumor growth with significant differences in tumor sizes and weights compared with that of CD44 down-regulation or doxorubicin treatment alone. In the combination of CD44 down-regulation and doxorubicin group, the tumor weight was significantly decreased by 4.38-fold compared with that of the control group. CONCLUSION:These results support a new strategy for breast cancer treatment by combining gene therapy with chemotherapy.
journal_name
Onco Targets Therjournal_title
OncoTargets and therapyauthors
Van Pham P,Vu NB,Duong TT,Nguyen TT,Truong NH,Phan NL,Vuong TG,Pham VQ,Nguyen HM,Nguyen KT,Nguyen NT,Nguyen KG,Khat LT,Van Le D,Truong KD,Phan NKdoi
10.2147/OTT.S30609subject
Has Abstractpub_date
2012-01-01 00:00:00pages
77-84issn
1178-6930pii
ott-5-077journal_volume
5pub_type
杂志文章abstract::The study is designed to explore the correlations of microvascular blood flow of contrast-enhanced ultrasound (CEUS) and hepatocyte growth factor (HGF)/c-Met signaling pathway with clinicopathological features and prognosis of patients with hepatocellular carcinoma (HCC). One hundred and eighteen patients pathological...
journal_title:OncoTargets and therapy
pub_type: 杂志文章
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journal_title:OncoTargets and therapy
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journal_title:OncoTargets and therapy
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journal_title:OncoTargets and therapy
pub_type: 杂志文章,评审
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journal_title:OncoTargets and therapy
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journal_title:OncoTargets and therapy
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journal_title:OncoTargets and therapy
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journal_title:OncoTargets and therapy
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journal_title:OncoTargets and therapy
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journal_title:OncoTargets and therapy
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journal_title:OncoTargets and therapy
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更新日期:2018-11-01 00:00:00
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journal_title:OncoTargets and therapy
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journal_title:OncoTargets and therapy
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journal_title:OncoTargets and therapy
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更新日期:2013-01-01 00:00:00
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