Cited by 204Barrier Structure and Function StudiesNanoparticle-Based Drug DeliveryDrug Transport and Resistance Mechanisms

Nanoscale drug delivery systems and the blood–brain barrier

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Khalin, Igor, Alyautdin, Renad, Ismail, Nafeeza Mohd, Haron, Muhammad Huzaimi, Kuznetsov, Dmitry·2014·International Journal of Nanomedicine

Abstract

The protective properties of the blood-brain barrier (BBB) are conferred by the intricate architecture of its endothelium coupled with multiple specific transport systems expressed on the surface of endothelial cells (ECs) in the brain's vasculature. When the stringent control of the BBB is disrupted, such as following EC damage, substances that are safe for peripheral tissues but toxic to neurons have easier access to the central nervous system (CNS). As a consequence, CNS disorders, including degenerative diseases, can occur independently of an individual's age. Although the BBB is crucial in regulating the biochemical environment that is essential for maintaining neuronal integrity, it limits drug delivery to the CNS. This makes it difficult to deliver beneficial drugs across the BBB while preventing the passage of potential neurotoxins. Available options include transport of drugs across the ECs through traversing occludins and claudins in the tight junctions or by attaching drugs to one of the existing transport systems. Either way, access must specifically allow only the passage of a particular drug. In general, the BBB allows small molecules to enter the CNS; however, most drugs with the potential to treat neurological disorders other than infections have large structures. Several mechanisms, such as modifications of the built-in pumping-out system of drugs and utilization of nanocarriers and liposomes, are among the drug-delivery systems that have been tested; however, each has its limitations and constraints. This review comprehensively discusses the functional morphology of the BBB and the challenges that must be overcome by drug-delivery systems and elaborates on the potential targets, mechanisms, and formulations to improve drug delivery to the CNS.

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  • ATP-binding cassette (ABC) transporters present on endothelial cells restrict therapeutic drug entry into the brain.

    “ATP-binding cassette (ABC) transporters present over the endothelial cells and restrict the therapeutic drug entry also along with neurotoxic agents/metabolites/hormones/mediators.”

    From Nanotechnology: A Promising Approach for Delivery of Neuroprotective Drugs (2020) · cites this paper as Alyautdin et al., 2014

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Authors
Khalin, I., Alyautdin, R., Ismail, N. M., Haron, M. H., & Kuznetsov, D.
Affiliations
  • National Defence University of Malaysia (MY)
  • Universiti Teknologi MARA System (MY)
Corresponding author
Khalin, Igor
Venue
International Journal of Nanomedicine
Published
2014-02
Volume
9
Pages
795
ISSN
  • 1176-9114 (ISSN-L)
  • 1178-2013
OpenAlex
W1994892692
Cited by
204
References
186
Citations by year
2026: 4 · 2025: 7 · 2024: 8 · 2023: 11 · 2022: 14 · 2021: 19 · 2020: 21 · 2019: 19 · 2018: 25 · 2017: 22 · 2016: 20 · 2015: 23 · 2014: 11
FWCI
2.06
Type
journal article
Language
en
Open access
Locations
  • International Journal of Nanomedicine (publishedVersion, cc-by-nc)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • Dove Medical Press (Taylor and Francis Group) (submittedVersion, cc-by-nc)
Funders
National Defence University of Malaysia
Topics
  • Life Sciences › Neuroscience › Neurology › Barrier Structure and Function Studies
  • Physical Sciences › Materials Science › Biomaterials › Nanoparticle-Based Drug Delivery
  • Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
Keywords
blood-brain barrier, nanoscale drug delivery, brain endothelium, tight junctions, occludin, claudins, blood-brain barrier disruption, brain drug delivery, nanocarriers, liposomes, drug transporters, neurodegenerative diseases
MeSH terms
Animals, Biological Transport, Active, Blood-Brain Barrier, Chemistry, Pharmaceutical, Colloids, Humans, Liposomes, Drug Delivery Systems, Nanotechnology, Nanomedicine, Nanoparticles

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