gala peptide GALA Peptide with Fatty Acid Acylation - Gala peptideendosomal escape synthetic, 30-amino acid amphipathic peptide Unveiling the GALA Peptide: A pH-Responsive Powerhouse in Biomedical Applications

GALA peptidesequence The GALA peptide stands out as a remarkable synthetic molecule with significant implications in various biomedical fields, particularly in drug and gene delivery. This designed synthetic pH-responsive amphipathic peptide is characterized by its ability to interact with cell membranes in a pH-dependent manner, making it a valuable tool for enhancing the efficacy of therapeutic agents.

At its core, the GALA peptide is a synthetic, 30-amino acid amphipathic peptide. Its unique structure is derived from repeating sequences, specifically Glu-Ala-Leu-Ala (EALA), which contribute to its amphipathic nature作者：RA Parente·1990·被引用次数：439—Mechanism of leakage of phospholipid vesicle contents induced by the peptide GALA ...GALA Peptide with Fatty Acid Acylation. Biochemistry 2012, 51 (23) .... This composition allows the GALA peptide to exhibit distinct behaviors at different pH levels. At physiological pH (around 7.4), it tends to exist as a random coil. However, under mildly acidic conditions, typically encountered within endosomes (pH 5-6), it undergoes a conformational change, transforming into an $\alpha$-helix. This pH-responsive characteristic is crucial for its function.

The primary utility of the GALA peptide lies in its capacity to facilitate endosomal escape. After a therapeutic agent is delivered into a cell via endocytosis, it becomes enclosed within an endosome.The incorporation of GALA peptide into a protein cage for ... For the therapeutic to reach its target within the cytoplasm or nucleus, it must break free from this endosomal vesicle.2008年12月8日—Peptideswere synthesized on an Applied Biosystems Pioneerpeptidesynthesizer using Fmoc/HATU chemistry. MonomericGALAwas synthesized as ... This is where the GALA peptide excels. Due to its pH-sensitive nature, as the endosome acidifies, the GALA peptide folds into its helical structure. This conformational change leads to membrane perturbation, causing the formation of pores or inducing leakage作者：Y Nishimura·2014·被引用次数：84—The most famous synthetic peptide, the GALA,has pH-sensitive and amphiphilic features. The GALA consists of 30 amino acid residues (WEA ALA EAL .... Consequently, this process ruptures the endosomal membrane, releasing the payload (such as drugs or genetic material) into the cell's cytoplasm, thereby accelerating the therapeutic process and enhancing delivery efficiencyPEGylation of the GALA Peptide Enhances the Lung- .... This ability to effectively penetrate and permeate cell lipid bilayers is a well-documented attribute of the GALA peptide作者：W Li·2004·被引用次数：761—GALA is a 30 amino acid synthetic peptidewith a glutamic acid-alanine-leucine-alanine (EALA) repeat that also contains a histidine and tryptophan residue ....

Beyond endosomal escape, the GALA peptide is also recognized as a pore-forming peptide. This property contributes to its fusogenic capabilities, enabling it to mediate the fusion between lipid membranes. Research has shown that the GALA peptide has pH-sensitive and amphiphilic features that are key to mediating fusion between lipid membranes, mimicking the behavior of viral fusion proteins. In fact, the GALA peptide was designed to mimic viral fusion protein sequences, which are naturally adept at entering host cellsBest Peptides for Muscle Maintenance | Gameday Men's Health. By replicating this function, the GALA peptide offers a synthetic route to achieve similar cellular entry and payload deliveryGALA (TFA) is a biological active peptide(GALA, a pH-sensitive fusogenic peptide, is a promising method to accelerate this step in order to enhance the ....

The versatility of the GALA peptide extends to various applications in drug and gene delivery systems. For instance, mRNA polyplexes with post-conjugated GALA peptides have demonstrated significantly higher cellular uptake compared to formulations without the peptide, all without inducing notable cytotoxicity. This suggests GALA peptide can improve the potency of nanobody–drug conjugates, enhancing their cytotoxicity作者：BF Lin·2012·被引用次数：33—GALA is a pH-responsive, membrane-perturbing peptidedesigned to fold from a random coil at physiological pH to an amphipathic α-helix under mildly acidic .... Furthermore, the GALA peptide can be incorporated into other delivery vehicles, such as protein cages, to impart responsive release capabilities or improve cellular targeting. Studies have also explored modifications like PEGylation of the GALA peptide to enhance lung-targeting activity, demonstrating the ongoing research into optimizing its properties for specific biomedical goals. The GALA (TFA) variant is also noted as a biological active peptide.The gala peptide: multiple roles in drug and gene delivery

The sequence of the GALA peptide includes repeats of Glutamic acid-Alanine-Leucine-Alanine (EALA), alongside histidine and tryptophan residues, contributing to its structure and functionApplication of a fusiogenic peptide GALA for intracellular .... Its length of 30 amino acids is sufficient to span the lipid bilayer, further aiding its membrane interaction. The presence of these specific amino acids is integral to its pH-responsiveness and its ability to perform its functionsThe GALA peptide is asynthetic, 30-amino acid amphipathic peptidedesigned to mimic the fusogenic domains of viral proteins. Its sequence, rich in glutamic .... In some contexts, the GALA peptide is also referred to in conjunction with fatty acid acylation, as seen in GALA Peptide with Fatty Acid Acylation, indicating further chemical modifications being explored for enhanced functionality.作者：I Nakase·2015·被引用次数：324—The GALA peptide wasdesigned to mimic viral fusion protein sequencesthat interact with cell membranes to mediate the escape of the viral genes ...

In summary, the GALA peptide is a highly engineered molecule whose pH-responsive amphipathic nature makes it invaluable for controlled drug and gene delivery. Its ability to promote endosomal escape, act as a pore-forming peptide, and mimic viral fusion protein sequences positions it as a powerful tool in the ongoing development of more effective therapeutic strategies. The exploration of different GALA peptide sequences and modifications continues to unlock its full potential in advancing biomedical science.