Recent advances in the targeting of systemically administered non-viral gene delivery systems.

Abstract:

:Introduction: Systemically administered non-viral gene delivery systems face multiple biological barriers that decrease their efficiency. These systems are rapidly cleared from the circulation and sufficient concentrations do not accumulate in diseased tissues. A number of targeting strategies can be used to provide for sufficient accumulation in the desired tissues to achieve a therapeutic effect. Areas covered: We discuss recent advances in the targeting of non-viral gene delivery systems to different tissues after systemic administration. We compare passive and active targeting applied for tumor delivery and propose some strategies that can be used to overcome the drawbacks of each case. We also discuss targeting the liver and lungs as two particularly important organs in gene therapy. Expert opinion: There is currently no optimum non-viral gene delivery system for targeting genes to specific tissues. The dose delivered to tumor tissues using passive targeting is low and shows a high patient variation. Although active targeting can enhance binding to specific cells, only a few reports are available to support its value in vivo. The design of smart nanocarriers for promoting active targeting is urgently needed and targeting the endothelium is a promising strategy for gene delivery to tumors as well as other organs.

journal_name

Expert Opin Drug Deliv

authors

Khalil IA,Sato Y,Harashima H

doi

10.1080/17425247.2019.1656196

subject

Has Abstract

pub_date

2019-10-01 00:00:00

pages

1037-1050

issue

10

eissn

1742-5247

issn

1744-7593

journal_volume

16

pub_type

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