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Liver-targeted delivery based on prodrug: passive and active approaches
Jiaqi Chen1, Yingrui Yao1, Xiaoran Mao1
1Key Laboratory of Therapeutic Substance of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China.
Background:
The liver, a central organ in human metabolism, is often the primary target for drugs. However, conditions such as viral hepatitis, cirrhosis, non-alcoholic fatty liver disease (NAFLD), and hepatocellular carcinoma (HCC) present substantial health challenges worldwide. Existing treatments, which suffer from the non-specific distribution of drugs, frequently fail to achieve desired efficacy and safety, risking unnecessary liver harm and systemic side effects.
Purpose:
The aim of this review is to synthesise the latest progress in the design of liver-targeted prodrugs, with a focus on passive and active targeting strategies, providing new insights into the development of liver-targeted therapeutic approaches.
Methods:
This study conducted an extensive literature search through databases like Google Scholar, PubMed, Web of Science, and China National Knowledge Infrastructure (CNKI), systematically collecting and selecting recent research on liver-targeted prodrugs. The focus was on targeting mechanisms, including the Enhanced Permeability and Retention (EPR) effect, the unique microenvironment of liver cancer, and active targeting through specific transporters and receptors.
Results:
Active targeting strategies achieve precise drug delivery by binding specific ligands to liver surface receptors. Passive targeting takes advantage of the EPR effect and tumour characteristics to enrich drugs in liver tumours. The review details successful cases of using small molecule ligands, peptides, antibodies and nanoparticles as drug carriers.
Conclusion:
Liver-targeted prodrug strategies show great potential in enhancing the efficacy of drug treatment and reducing side effects for liver diseases. Future research should balance the advantages and limitations of both targeting strategies, focusing on optimising drug design and targeting efficiency, especially for clinical application. In-depth research on liver-specific receptors and the development of innovative targeting molecules are crucial for advancing the field of liver-targeted prodrugs.
Insights
Liver-targeted prodrugs enhance treatment efficacy and reduce side effects for liver diseases by utilizing passive and active targeting strategies. Future research should optimize drug design and targeting efficiency for clinical success.
Area of Science:
- Pharmacology
- Drug Delivery Systems
- Hepatology
Background:
- The liver is a primary drug target, but liver diseases like NAFLD and HCC pose global health challenges.
- Current treatments lack specificity, leading to suboptimal efficacy and increased side effects.
- Non-alcoholic fatty liver disease (NAFLD) and hepatocellular carcinoma (HCC) are significant health concerns.
Purpose of the Study:
- To review advancements in liver-targeted prodrug design.
- To focus on passive and active targeting strategies for improved therapeutic outcomes.
- To offer insights into developing effective liver-targeted therapies.
Main Methods:
- Systematic literature search across major scientific databases (PubMed, Web of Science, etc.).
- Focus on targeting mechanisms including the Enhanced Permeability and Retention (EPR) effect and tumor microenvironment.
- Inclusion of active targeting via specific transporters and receptors.
Main Results:
- Passive targeting leverages the EPR effect and tumor characteristics for drug enrichment.
- Active targeting utilizes specific ligands to bind liver surface receptors for precise delivery.
- Successful examples include small molecules, peptides, antibodies, and nanoparticles as carriers.
Conclusions:
- Liver-targeted prodrugs significantly improve treatment efficacy and reduce side effects.
- Future work requires balancing targeting strategies and optimizing drug design for clinical use.
- Developing novel targeting molecules and understanding liver-specific receptors are key.
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