beta-Adrenoceptor blockers protect against staurosporine-induced apoptosis in SH-SY5Y neuroblastoma cells.

beta-Adrenoceptor blockers protect against staurosporine-induced apoptosis in SH-SY5Y neuroblastoma cells.
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β-肾上腺素受体阻滞剂可防止星形孢菌素诱导的 SH-SY5Y 神经母细胞瘤细胞凋亡。

DOI:
10.1016/j.ejphar.2008.04.045
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发表时间:
2008
影响因子:
5
通讯作者:
Yang,Jay
Yang,Jay
中科院分区:
医学2区
文献类型:
--
作者:
Mikami,Maya;Goubaeva,Farida;Song,JosephH;Lee,HT;Yang,Jay

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β-肾上腺素受体阻滞剂在心脏和肾脏中表现出良好的抗凋亡特性,而关于这类药物对神经元凋亡的影响知之甚少。我们研究了三种β-肾上腺素能受体阻滞剂普萘洛尔的作用(1-(异丙氨基)-3-(萘-1-基氧基)丙-2-醇),阿替洛尔(2-[4-[2-羟基-3-(1-甲基乙基氨基)丙氧基]苯基]乙酰胺)和ICI 118551(1-[2,3-(二氢-7-甲基-1H-亚丁基-4-基)氧基]-3-[(1-甲基乙基)氨基]-2-丁醇)对抗星形孢菌素诱导的SH-SY 5 Y人神经母细胞瘤细胞凋亡。星形孢菌素增加半胱天冬酶3样活性、DNA片段化、PARP裂解和TUNEL阳性细胞的数量,这与诱导细胞凋亡一致。普萘洛尔和ICI 118551,但不是阿替洛尔,表现出浓度依赖性抑制半胱天冬酶3样活性。普萘洛尔和ICI 118551直接抑制重组半胱天冬酶9的酶活性,而阿替洛尔没有;然而,所检查的β-肾上腺素受体阻断剂均没有直接阻断半胱天冬酶2或3的活性。在离体线粒体中,普萘洛尔和ICI 118551抑制星形孢菌素诱导的细胞色素c释放,而阿替洛尔没有。我们的结论是普萘洛尔和ICI 118551保护SH-SY 5 Y细胞对星形孢菌素诱导的细胞凋亡,通过对线粒体和半胱天冬酶9的双重作用,在细胞类型和细胞凋亡的范例,其中传统的抑制剂的线粒体通透性转换,如环孢菌素A和bongkrekic酸证明没有保护。
The β-adrenoceptor blockers exhibit a well-characterized anti-apoptotic property in the heart and kidney while less is known about the effect of this class of drugs on neuronal apoptosis. We studied the effects of three β-adrenoceptor blockers propranolol (1-(isoproplyamino)-3-(naphthalene-1-yloxy)propan-2-ol), atenolol (2-[4-[2-hydroxy-3-(1-methylethylamino)propoxyl]phenyl]ehanamide), and ICI 118551 (1-[2,3-(dihydro-7-methyl-1H-iden-4-yl)oxy]-3-[(1-methylethyl)amino]-2-butanol), against staurosporine-induced apoptosis in SH-SY5Y human neuroblastoma cells. Staurosporine increased caspase 3-like activity, DNA fragmentation, PARP cleavage, and the number of TUNEL positive cells consistent with the induction of apoptosis. Propranolol and ICI 118551, but not atenolol, demonstrated a concentration-dependent inhibition of caspase 3-like activity. Propranolol and ICI 118551 directly inhibited the enzymatic activity of recombinant caspase 9 while atenolol did not; however, none of the β-adrenoceptor blockers that were examined directly blocked caspases 2 or 3 activity. In isolated mitochondria, propranolol and ICI 118551 inhibited staurosporine-induced cytochrome c release while atenolol did not. We conclude that propranolol and ICI 118551 protect SH-SY5Y cells against staurosporine-induced apoptosis through a dual action on the mitochondria and on caspase 9 in a cell type and an apoptotic paradigm where the conventional inhibitors of mitochondrial permeability transition such as cyclosporin A and bongkrekic acid demonstrate no protection.
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