不同类型胶原蛋白在皮肤衰老中的作用及其研究进展

Roles of different types of collagen in skin aging and their research progress

摘要:

胶原蛋白的流失是皮肤衰老的核心因素之一，作为人体含量最丰富的蛋白质，其动态平衡对维持皮肤结构功能至关重要。本文系统介绍了在皮肤衰老过程中发挥关键作用的I型、III型、IV型、VII型和XVII型胶原蛋白的功能及其作用机制，I型胶原蛋白主要提供真皮层机械支撑力，III型胶原蛋白增强皮肤弹性并协同屏障修复，IV型胶原蛋白维持基底膜稳定，VII型胶原蛋白介导表皮-真皮锚定，XVII型胶原蛋白则调控表皮干细胞稳态；同时深入论述了基于胶原蛋白流失机制的抗衰老策略研究进展，包括应用抗氧化剂减轻氧化损伤对胶原的破坏，利用新型活性成分刺激胶原合成，以及通过补充胶原蛋白肽等方式促进内源性胶原再生。本文总结了不同类型胶原蛋白在皮肤衰老中的功能网络，为开发多维度、协同增效的抗衰老策略提供了新的视角和思路。

Abstract:

The loss of collagen is one of the core mechanisms of skin aging. Since collagens are among the most abundant proteins in the human body, their dynamic balance is crucial for maintaining the structure and functions of the skin. This paper systematically introduces the functions and action mechanisms of type I, III, IV, VII, and XVII collagens, which play key roles in the process of skin aging. Type I collagen mainly provides mechanical support to the dermis; type III collagen enhances skin elasticity and assists in barrier repair; type IV collagen maintains the stability of the basement membrane; type VII collagen mediates epidermal-dermal anchoring; and type XVII collagen regulates the homeostasis of epidermal stem cells. Furthermore, this paper deeply discusses the research progress in anti-aging strategies based on the mechanism of collagen loss, including the application of antioxidants to reduce oxidative damage to collagen, the use of new active ingredients to stimulate collagen synthesis, and the promotion of endogenous collagen regeneration by supplementing collagen peptides and other methods. This review aims to integrate the functional network of different types of collagens in skin aging, providing new perspectives and ideas for the development of multi-dimensional and synergistic anti-aging strategies.