细胞穿透肽(Cell-Penetrating Peptides, CPPs)或者称为蛋白转导区(Protein Transduction Domain, PTDs) 是一类能携带大分子物质进入细胞的短肽,其穿膜能力不依赖经典的胞吞作用,也非ATP依赖,长度一般不超过30个氨基酸且其中富含精氨酸、赖氨酸等碱性氨基酸残基,氨基酸序列通常为带有正电荷的长短不等的多肽片段,...
已发现对CPP连接蛋白的细胞溶质传递的评估容易产生伪影,因此需要使用评估方法,将真正的细胞溶液传递与细胞表面附着或胞内包裹的CPP蛋白区分开来。最近,报道了几种利用CPP作为载体将生物活性的全长蛋白质传递到活细胞和动物体内的方法。 几个小组已成功在体外交付CPP融合蛋白。在体外,TAT能够将辣根过氧化物酶和核糖核酸酶...
1. CPP 通过脂双层直接转运 CPPs 介导递送的zuì初步骤是基于带正电荷的氨基酸和cell表面带负电荷的膜磷脂双层形成静电相互作用将转导肽和外源性物质积聚在磷脂双层的外部小叶上,CPPs 变换结构使其疏水性氨基酸与cell膜的疏水性Core相互作用,使脂质双分子层稀疏,引起两者结合部位膜的短暂或者长时间的稳定失衡,CPPs ...
Cell penetrating peptides (CPP) have the ability to rapidly internalize across biological membranes. CPP have been effective for delivery of various chemotherapeutic agents used to combat cancer. CPP can enhance delivery of drugs to a targeted site when combined with tumor targeting peptides. CPP ...
细胞穿透肽(cellpenetratingpeptide,CPP)或称穿膜肽、跨膜肽、透皮肽,也有研究称为蛋白质转导结构域(Proteintransductiondomain,PTD),是最早用于透皮介导的肽类物质。这些多肽能快速穿透细胞,并且能够保留原有结构和功能,且不依赖于胞吞作用进入细胞。他们不仅可以自身穿透细胞,也可以装载其他物质并促进这类物质的细胞渗透...
CPPs的类型包括聚阳离子结构、两性结构以及仅含疏水性氨基酸的疏水性肽。CPPs的一个例子是来自HIV-1的反激活转录激活物(TAT),它在1988年被发现可以有效吸收于细胞中。自那以后,CPP的数量显著增加,并开发了具有更高效蛋白质传输特性的合成小分子类似物。CPPs在医学中有广泛应用,包括作为药物递送...
Activable cell-penetrating peptide (ACCP)是一种在实验中广泛应用的肽。它由一个聚阳离子CPP组成,通常是arg9或r9。这种CPP通过一个可裂解的接头连接到匹配的聚阴离子,通常是glu9或e9。ACCP的设计非常巧妙,它将净电荷减少到几乎为零。这样做的目的是抑制粘附和摄取到细胞。在正常情况下,聚阳离子CPP会因为其正...
Cell penetrating peptides (CPP), also named protein transduction domains, comprise short and usually basic amino acids-rich peptides originating from proteins able to cross biological barriers, such as the viral Tat protein, or are rationally designed. They have emerged as a new class of non-...
GRKKRRQRRRPQ, the transcription activator of the human immunodeficiency virus type 1 (HIV-1) viral genome, enters cells in a non-toxic and highly efficient manner. Tat is the first known cell-penetrating peptide.More about pI, sequence, and structures of HS-binding cell penetrating peptides. ...
分子式:C₇₃H₁₂₆N₂₀O₁₅S 分子量:1556 CAS#:72093-22-2 合成方法:Synthetic 存储条件:-20 ± 5 °C 应用:Cell-permeable Peptides| Inflammation Research描述:Mastoparan X has been isolated from the venom of Vespa xanthoptera. It has been suggested that mastoparan enhances...