Matrix Metalloproteinase-Responsive Drug Delivery Systems

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Abstract
Matrix metalloproteinases (MMPs) are a class of endopeptidases that are dependent on zinc and facilitate the degradation of extracellular matrix (ECM) proteins, thereby playing pivotal parts in human physiology and pathology. MMPs regulate normal tissue and cellular functions, including tissue development, remodeling, angiogenesis, bone formation, and wound healing. Several diseases, including cancer, inflammation, cardiovascular diseases, and nervous system disorders, have been linked to dysregulated expression of specific MMP subtypes, which can promote tumor progression, metastasis, and inflammation. Various MMP-responsive drug delivery and release systems have been developed by harnessing cleavage activities and overexpression of MMPs in affected regions. Herein, we review the structure, substrates, and physiological and pathological functions of various MMPs and highlight the strategies for designing MMP-responsive nanoparticles to improve the targeting efficiency, penetration, and protection of therapeutic payloads.
Funding Information
  • National Key Research and Development Program of China (2022YFC2502800)
  • Shanghai Municipal Education Commission (2023ZKZD21)
  • Science and Technology Commission of Shanghai Municipality (21XD1422200, 22QA1405000, 23S41900100)
  • National Natural Science Foundation of China (81973272, 82171358, 92068111)

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