Internalization of Near‐Infrared Fluorescently Labeled Activatable Cell‐Penetrating Peptide and of Proteins into Human Fibrosarcoma Cell Line HT‐1080

Internalization of Near‐Infrared Fluorescently Labeled Activatable Cell‐Penetrating Peptide and of Proteins into Human Fibrosarcoma Cell Line HT‐1080
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近红外荧光标记的可激活细胞穿透肽和蛋白质内化到人纤维肉瘤细胞系 HTâ1080 中

DOI:
10.1002/jcb.25075
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发表时间:
2014
影响因子:
4
通讯作者:
S. Reissmann
S. Reissmann
中科院分区:
生物学2区
文献类型:
--
作者:
E. Kallweit;C. Kaether;K. Kappe;C. Schumann;I. Hilger;S. Reissmann

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近红外荧光标记的货物内化到活细胞和组织中,可以进行高灵敏度的检测,而不会受到皮肤、海豚或其他荧光细胞和组织化合物的干扰。在这项研究中,标记的牛血清白蛋白和抗体被纤维肉瘤细胞(HT-1080)通过与不同细胞穿透性多肽形成非共价复合体来触发摄取,并测定了摄取效率和细胞内定位。为了提高肿瘤细胞内化的选择性,合成了一种荧光可激活细胞穿透肽(ACPP),并对其进行了功能表征。这个25肽被设计成可以被基质金属蛋白酶(MMPs)激活。用具有不同活性的细胞来评估其摄取选择性。J.细胞。生物化学。116:1222-1231,2015。©2014 Wiley期刊,Inc.
The internalization of near‐infrared fluorescently labeled cargos into living cells and tissues allows a highly sensitive detection without interference from skin, porphins or other fluorescent cell and tissue compounds. In this study, the uptake of labeled bovine serum albumin and an antibody, into fibrosarcoma (HT‐1080) cells was triggered by the formation of non‐covalent complexes with different cell‐penetrating peptides; uptake efficiency and intracellular localization were determined. To improve selectivity of internalization into tumor cells, a fluorescent activatable cell‐penetrating peptide (ACPP) was synthesized and functionally characterized. This 25‐mer peptide was designed to be activatable by Matrix‐Metallo‐Proteases (MMPs). Its uptake selectivity was estimated using cells with different MMP activities. J. Cell. Biochem. 116: 1222–1231, 2015. © 2014 Wiley Periodicals, Inc.
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