Structure-activity relationship of a peptide permeation enhancer.

IF 3.6 Q2 MEDICINE, RESEARCH & EXPERIMENTAL
Joël Brunner, Gerrit Borchard
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引用次数: 1

Abstract

The pentapeptide L-R5 has previously been shown to transiently increase the permeability of nasal epithelial cell layers in vitro, allowing paracellular transport of molecules of up to 4 kDa. Protein kinase C zeta (PKC ζ), a member of a family of serine/threonine kinases was shown to be involved in tight junction modulation induced by L-R5. We show here that the ability of L-R5 to modulate tight junctions is comparable to other permeability enhancers such as bilobalide, latrunculin A or C10. Interaction of the peptide with the target protein occurs via electrostatic interaction, with the presence of positive charges being essential for its functionality. L-R5 is myristoylated to allow quick cell entry and onset of activity. While no epithelial cytotoxicity was detected, the hydrophobic myristoyl rest was shown to cause haemolysis. Taken together, these data show that a structural optimization of L-R5 may be possible, both from a toxicological and an efficacy point of view.

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Abstract Image

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一种肽渗透促进剂的构效关系。
五肽L-R5先前已被证明能在体外瞬间增加鼻上皮细胞层的通透性,允许高达4 kDa的分子在细胞旁运输。蛋白激酶C ζ (PKC ζ)是丝氨酸/苏氨酸激酶家族的成员,被证明参与L-R5诱导的紧密连接调节。我们在这里表明,L-R5调节紧密连接的能力与其他通透性增强剂如双叶碱、拉runculin A或C10相当。肽与靶蛋白的相互作用是通过静电相互作用发生的,正电荷的存在对其功能至关重要。L-R5被肉豆蔻酰基化以允许快速进入细胞并开始活性。虽然没有检测到上皮细胞毒性,但疏水性肉豆蔻酰基rest显示可引起溶血。综上所述,这些数据表明,从毒理学和疗效的角度来看,L-R5的结构优化是可能的。
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来源期刊
Tissue Barriers
Tissue Barriers MEDICINE, RESEARCH & EXPERIMENTAL-
CiteScore
6.60
自引率
6.50%
发文量
25
期刊介绍: Tissue Barriers is the first international interdisciplinary journal that focuses on the architecture, biological roles and regulation of tissue barriers and intercellular junctions. We publish high quality peer-reviewed articles that cover a wide range of topics including structure and functions of the diverse and complex tissue barriers that occur across tissue and cell types, including the molecular composition and dynamics of polarized cell junctions and cell-cell interactions during normal homeostasis, injury and disease state. Tissue barrier formation in regenerative medicine and restoration of tissue and organ function is also of interest. Tissue Barriers publishes several categories of articles including: Original Research Papers, Short Communications, Technical Papers, Reviews, Perspectives and Commentaries, Hypothesis and Meeting Reports. Reviews and Perspectives/Commentaries will typically be invited. We also anticipate to publish special issues that are devoted to rapidly developing or controversial areas of research. Suggestions for topics are welcome. Tissue Barriers objectives: Promote interdisciplinary awareness and collaboration between researchers working with epithelial, epidermal and endothelial barriers and to build a broad and cohesive worldwide community of scientists interesting in this exciting field. Comprehend the enormous complexity of tissue barriers and map cross-talks and interactions between their different cellular and non-cellular components. Highlight the roles of tissue barrier dysfunctions in human diseases. Promote understanding and strategies for restoration of tissue barrier formation and function in regenerative medicine. Accelerate a search for pharmacological enhancers of tissue barriers as potential therapeutic agents. Understand and optimize drug delivery across epithelial and endothelial barriers.
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