DEVD-based hydrogelator minimizes cellular apoptosis induction.

DEVD-based hydrogelator minimizes cellular apoptosis induction.
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基于 DEVD 的水凝胶剂可最大限度地减少细胞凋亡诱导

DOI:
10.1038/srep01848
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发表时间:
2013
期刊:
影响因子:
4.6
通讯作者:
Liang, Gao-Lin
Liang, Gao-Lin
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Tang, An-Ming;Wang, Wei-Juan;Mei, Bin;Hu, Wang-Lai;Wu, Mian;Liang, Gao-Lin

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在此,我们报告了基于devd的对CASP3敏感的七肽凝胶剂1及其异构体对照凝胶剂2的合理设计,该凝胶剂具有基于devd的七肽序列。1在水中的自组装导致弯曲的长纳米纤维形成超分子水凝胶I,其机械强度高于由刚性的短纳米纤维2组成的水凝胶II。体外酶分析表明1对CASP3敏感,而2对CASP3不敏感。3-(4,5-二甲基噻唑-2-基)2,5二苯基溴化四唑(MTT)和Western blot分析表明,基于devd的凝胶剂2通过凋亡途径诱导细胞死亡,而基于devd的凝胶剂1最大限度地减少了细胞凋亡诱导。
Herein, we report the rational design of a DEVD-based heptapeptide hydrogelator 1 which is susceptible to caspase-3 (CASP3) and its isomeric control hydrogelator 2 with a DEDV-based heptapeptide sequence. Self-assembly of 1 in water results in flexuous, long nanofibers to form supramolecular hydrogel I with higher mechanical strength than that of hydrogel II which is composed of rigid, short nanofibers of 2.In vitroenzymatic analysis indicated that 1 is susceptive to CASP3 while 2 is not. 3-(4,5-dimethylthiazol-2-yl) 2,5 diphenyl tetrazolium bromide (MTT) and Western blot analyses indicated that DEDV-based hydrogelator 2 induces cell death via apoptotic pathway while the DEVD-based hydrogelator 1 minimizes cellular apoptosis induction.
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