摘要:
Provided are peptides imparting cell permeability to a lipid membrane structure and/or enhancing the cell permeability of a lipid membrane structure, and a lipid membrane structure which comprises, as a constituent lipid, a lipid bound to such a peptide and has cell permeability or shows enhanced cell permeability. The amino acid sequences of the peptides imparting cell permeability to a lipid membrane structure and/or enhancing the cell permeability of a lipid membrane structure are represented by: LX1X2X1X1X1L, LLX2X1X1X1L and LX1X2X1X1L (wherein L represents a leucine residue; X1 represents a polar amino acid residue; and X2 represents a polar, non-charged and branched chain amino acid residue).
摘要:
Provided are peptides imparting cell permeability to a lipid membrane structure and/or enhancing the cell permeability of a lipid membrane structure, and a lipid membrane structure which comprises, as a constituent lipid, a lipid bound to such a peptide and has cell permeability or shows enhanced cell permeability. The amino acid sequences of the peptides imparting cell permeability to a lipid membrane structure and/or enhancing the cell permeability of a lipid membrane structure are represented by: LX1X2X1X1X1L, LLX2X1X1X1L and LX1X2X1X1L (wherein L represents a leucine residue; X1 represents a polar amino acid residue; and X2 represents a polar, non-charged and branched chain amino acid residue).
摘要:
Disclosed is a non-viral vector capable of delivering a given substance into the nucleus of a target cell effectively even when the target cells is a undividable cell such as a dendritic cell. A bilamellar liposome having a first lipid membrane and a second lipid membrane successively from the outside, the first lipid membrane having a membrane-fusing ability and the second lipid membrane having on its surface a nuclear transport peptide.
摘要:
A lipid membrane structure for delivering a substance into a nucleus of a cell, wherein lipid membrane is modified with (a) a polypeptide comprising the amino acid sequence of SEQ ID NO: 1, and/or (b) a polypeptide consisting of an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 1, but including deletion and/or substitution and/or insertion of one or several amino acid residues, and having an activity of promoting migration of the lipid membrane structure into a nucleus of a cell, which can efficiently deliver a nucleic acid into a nucleus of an immunocyte such as dendritic cell.
摘要翻译:一种用于将物质递送到细胞核的脂质膜结构,其中脂质膜用(a)包含SEQ ID NO:1的氨基酸序列的多肽和/或(b)由氨基酸组成的多肽 酸序列,其包含SEQ ID NO:1的氨基酸序列,但包括缺失和/或取代和/或插入一个或几个氨基酸残基,并具有促进脂质膜结构迁移到细胞核中的活性 细胞,其可以有效地将核酸递送到免疫细胞如树突状细胞的细胞核中。
摘要:
It is intended to provide a positively charged liposome, particularly having a polyarginine peptide on a surface thereof, which is capable of increasing the resistance to a negatively charged biological component such as a protein in the blood and maintaining a high ability to deliver a substance even in the blood. An agent for enhancing the resistance of liposome against biological component comprising a peptide having at least one of the following characteristics (a) and (b) as an active ingredient: (a) A peptide comprising an amino acid sequence represented by SEQ ID No: 1 or 2; and (b) A peptide comprising an amino acid sequence represented by SEQ ID No: 1 or 2, in which one or more amino acids are deleted, substituted or added, and having an activity for promoting lipid membrane fusion under acidic condition. An agent for enhancing the resistance of liposome against biological component in this invention, being included in a liposome, is capable of increasing the resistance to a negatively charged biological component such as a protein in the blood and maintaining a high ability to deliver a substance even in the blood.
摘要翻译:旨在提供带正电荷的脂质体,特别是在其表面具有聚精氨酸肽,其能够增加对带负电的生物成分如血液中的蛋白质的抗性,并且保持高的物质输送能力 在血中 用于增强脂质体对生物成分的抗性的试剂,其包含具有以下特征(a)和(b)中的至少一个作为活性成分的肽:(a)包含SEQ ID No: 1或2; 和(b)包含SEQ ID No:1或2所示的氨基酸序列的肽,其中一个或多个氨基酸缺失,取代或添加,并且具有在酸性条件下促进脂质膜融合的活性。 包含在脂质体中的用于增强本发明中脂质体对抗生物成分的抗性的药剂能够增加对带负电的生物成分如血液中的蛋白质的抗性,并保持高的物质输送能力 在血中
摘要:
A lipid membrane structure for delivering a substance into a nucleus of a cell, wherein lipid membrane is modified with (a) a polypeptide comprising the amino acid sequence of SEQ ID NO: 1, and/or (b) a polypeptide consisting of an amino acid sequence comprising the amino acid sequence of SEQ ID NO: 1, but including deletion and/or substitution and/or insertion of one or several amino acid residues, and having an activity of promoting migration of the lipid membrane structure into a nucleus of a cell, which can efficiently deliver a nucleic acid into a nucleus of an immunocyte such as dendritic cell.
摘要:
A phospholipid derivative useful for the preparation of liposomes for efficient uptake of an antitumor agent or a gene intracellularly by a target tumor cell, which comprises a residue of an alcohol compound and a residue of a phospholipid, and comprising a peptide between the residue of an alcohol compound and the residue of a phospholipid, and wherein (a) the alcohol compound is an alcohol compound selected from poly(alkylene glycols) and the like, (b) the phospholipid is a phospholipid selected from phosphatidylethanolamines, phosphatidylcholines, phosphatidylserines and the like, and (c) the peptide is a peptide comprising a substrate peptide that can serve as a substrate of a matrix metalloproteinase, provided that one amino acid residue or an oligopeptide containing 2 to 8 amino acid residues may bind to one or both ends of the substrate peptide.
摘要:
The present invention provides a liposome having excellent lung migration ability that had not existed hitherto, by including GALA or Chol-GALA in the liposome. Furthermore, by using the liposome, a pulmonary delivery carrier having a stronger knockdown effect of siRNA when compared to existing carriers is provided.
摘要:
The present invention provides a liposome having excellent lung migration ability that had not existed hitherto, by including GALA or Chol-GALA in the liposome. Furthermore, by using the liposome, a pulmonary delivery carrier having a stronger knockdown effect of siRNA when compared to existing carriers is provided.
摘要:
It is intended to provide a vector for delivering a target substance into a nucleus or a cell. This object is achieved by providing a vector for delivering a target substance into a nucleus or a cell which comprises a lipid membrane structure having a lipid membrane containing an anionic lipid such as phosphatidic acid, cardiolipin, etc.