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GALA
目录号 : KM32184 CAS No. : 107658-43-5 纯度 : 96%
GALA 是一种由 30 个氨基酸组成的 pH 响应型两亲肽,是肺内皮靶向配体。GALA 能在 pH 5.0 的酸性环境下发生从无规卷曲到 α-螺旋的构象转变,从而诱导内体膜去稳定化和融合。GALA 介导修饰后的脂质体通过网格蛋白依赖的内吞及转胞吞作用穿越肺内皮细胞,并在静脉注射后特异性蓄积于肺部。GALA 能显著促进外泌体、质粒及脂质体所载货物的胞质释放,有效提升基因转染效率并驱动功能性大分子 (如 siRNA) 在肺泡上皮细胞中的基因敲低 (有效浓度下无显著细胞毒性)。GALA 是肺癌转移 (如黑色素瘤肺转移) 及肺部靶向给药系统研究的重要工具。
规格 价格 是否有货 数量
1mg
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生物活性
GALA is a pH-responsive amphipathic peptide consisting of 30 amino acids, which acts as a lung endothelium-targeting ligand. GALA undergoes a conformational transition from random coil to α-helix in an acidic environment at pH 5.0, thereby inducing endosomal membrane destabilization and fusion. GALA-modified liposomes traverse lung endothelial cells via clathrin-dependent endocytosis and transcytosis, and specifically accumulate in the lungs after intravenous injection. GALA significantly promotes the cytosolic release of cargos carried by exosomes, plasmids and liposomes, effectively enhances gene transfection efficiency, and drives gene knockdown of functional macromolecules (such as siRNA) in alveolar epithelial cells (with no significant cytotoxicity at effective concentrations). GALA serves as a critical tool for studies on lung cancer metastasis (e.g., melanoma lung metastasis) and lung-targeted drug delivery systems.
分子式
C136H215N33O45
分子量
3032.36
CAS号
107658-43-5
运输条件
Room temperature in continental US; may vary elsewhere.
储存方式

Sealed storage, away from moisture

Powder -80°C 2 years
  -20°C 1 year

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

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