کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2113014 1084433 2013 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Guggulsterone sensitizes glioblastoma cells to Sonic hedgehog inhibitor SANT-1 induced apoptosis in a Ras/NFκB dependent manner
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی تحقیقات سرطان
پیش نمایش صفحه اول مقاله
Guggulsterone sensitizes glioblastoma cells to Sonic hedgehog inhibitor SANT-1 induced apoptosis in a Ras/NFκB dependent manner
چکیده انگلیسی


• Shh inhibitor SANT-1 failed to induce glioma cell death.
• SANT-1 sensitized glioma cells to Ras/NFκB inhibitor Guggulsterone via Caspase 9 activation.
• Functional inactivation of Ras/NFκB axis sensitized glioma cells to SANT-1.
• SANT-1 inhibits the proliferation of glioma stem-like cells.

Since Shh pathway effector, Gli1, is overexpressed in gliomas, we investigated the effect of novel Shh inhibitor SANT-1 on glioma cell viability. Though SANT-1 failed to induce apoptosis, it reduced proliferation of glioma stem-like cells. Apart from canonical Shh cascade, Gli1 is also induced by non-canonical pathways including NFκB. Therefore, a combinatorial strategy with Ras/NFκB inhibitor, Guggulsterone, was employed to enhance effectiveness of SANT-1. Guggulsterone inhibited Ras and NFκB activity and sensitized cells to SANT-1 induced apoptosis via intrinsic apoptotic mechanism. Inhibition of either Ras or NFκB activity was sufficient to sensitize cells to SANT-1. Guggulsterone induced ERK activation also contributed to Caspase-9 activation. Since SANT-1 and Guggulsterone differentially target stem-like and non-stem glioma cells respectively, this combination warrants investigation as an effective anti-glioma therapy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cancer Letters - Volume 336, Issue 2, 19 August 2013, Pages 347–358
نویسندگان
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