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Targeted endocytosis: Strategies in drug delivery systems for enhancing antitumor efficacy
Xinghua Peng1, Mengxia Zhang2, Yuan Gao3
1Institute of Pharmacy & Pharmacology, University of South China, Hengyang 421001, China; Hunan Province Key Laboratory for Antibody-Based Drug and Intelligent Delivery System, Biomedical research Institute, School of Pharmaceutical Sciences, Hunan University of Medicine, Huaihua 418000, China.
Abstract:
Endocytosis represents a critical mechanism for the cellular entry of many drug delivery systems, enabling them to exert their therapeutic actions. While advances in targeted therapy and immunotherapy have markedly improved survival rates for cancer patients, inefficient drug delivery continues to pose a major limitation to drug efficacy. In response, recent research has increasingly focused on designing drug delivery platforms that exploit endocytic pathways. Such systems aim to modulate how tumor cells internalize therapeutics, thereby optimizing drug transport into cells, overcoming resistance mechanisms, and improving antitumor outcomes. However, alterations in endocytic pathways within tumor cells can significantly influence treatment efficacy. This review explores the distinct mechanisms of endocytosis dysregulated in cancers and highlights how strategic targeting of these pathways could help alleviate delivery challenges, promote intracellular drug accumulation, and circumvent resistance. We also examine the primary mechanisms governing drug internalization and summarize key strategies and applications of endocytosis-targeted drug delivery in oncology. Finally, we discuss current limitations in the field and offer perspectives on future developments.
Insights
Targeting cancer cell endocytosis improves drug delivery. Exploiting dysregulated endocytic pathways in tumors enhances therapeutic efficacy and overcomes drug resistance for better cancer treatment outcomes.
Area of Science:
- Oncology
- Cell Biology
- Pharmacology
Background:
- Endocytosis is crucial for cellular drug delivery, yet inefficient delivery limits cancer therapy efficacy.
- Targeted therapies and immunotherapies have improved cancer survival, but drug delivery remains a challenge.
- Tumor cell endocytic pathway alterations impact treatment effectiveness.
Purpose of the Study:
- To review how cancer cells dysregulate endocytosis.
- To highlight strategies for targeting endocytic pathways to improve drug delivery in cancer.
- To examine drug internalization mechanisms and endocytosis-targeted delivery applications in oncology.
Main Methods:
- Literature review of endocytosis mechanisms in cancer.
- Analysis of endocytic pathway dysregulation in tumor cells.
- Summary of strategies and applications for endocytosis-targeted drug delivery.
Main Results:
- Cancer cells exhibit distinct endocytic pathway dysregulations.
- Targeting these pathways can enhance intracellular drug accumulation and overcome resistance.
- Various strategies exist for exploiting endocytosis in drug delivery platforms.
Conclusions:
- Strategic targeting of cancer cell endocytosis offers a promising approach to improve drug delivery and therapeutic outcomes.
- Understanding endocytic mechanisms is key to developing effective cancer treatments.
- Further research is needed to address current limitations and advance endocytosis-targeted drug delivery.
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