L-alanyl-L-cystine is a dipeptide composed of alanine and L-cystine, and it has multiple mechanisms of action in the organism, mainly including the following aspects:
·Antioxidant Effect: L-cystine is a dimer of cysteine and contains a sulfhydryl group (-SH), which endows it with antioxidant properties. It can react with free radicals through its sulfhydryl group, converting free radicals into more stable substances, thereby reducing the damage of free radicals to cells. L-alanyl-L-cystine can be decomposed into alanine and L-cystine in the body, and then exerts an antioxidant effect to protect cells from oxidative stress damage.
·Participation in Glutathione Synthesis: Glutathione is an important antioxidant and an intracellular regulatory substance, composed of glutamic acid, cysteine, and glycine. L-cystine in L-alanyl-L-cystine is one of the key raw materials for glutathione synthesis. After cells uptake it, they decompose it into L-cystine, and then L-cystine participates in the synthesis of glutathione, thus indirectly enhancing the antioxidant capacity and detoxification function of cells.
·Promotion of Protein Synthesis: Alanine is a non-essential amino acid that can participate in protein synthesis in the body. As a dipeptide, L-alanyl-L-cystine can be decomposed into alanine and L-cystine after being absorbed by cells, providing raw materials for protein synthesis. At the same time, it may also promote the expression of genes related to protein synthesis and signal transduction by regulating the intracellular signaling pathways, thereby promoting protein synthesis, which helps maintain the normal structure and function of cells and promotes tissue growth and repair.
·Regulation of Cell Metabolism: L-alanyl-L-cystine can participate in various metabolic processes within cells. For example, it can provide a nitrogen source and a sulfur source for cells and participate in amino acid metabolism and the synthesis of sulfur-containing compounds. In addition, it may also regulate the energy metabolism and material metabolism of cells by affecting the activity of intracellular enzymes and metabolic pathways, maintaining the normal physiological functions of cells.
In cosmetics, L-alanyl-L-cystine mainly based on its mechanisms of action such as antioxidant and promoting skin cell metabolism, plays roles such as moisturizing, anti-wrinkle, and whitening, helping to maintain the health and youthful state of the skin.
