This review discusses the different
biological barriers that affect the delivery of therapeutic agents through
membranes, such as intestinal mucosa, Brain Blood Barrier (BBB), and mediators
of transport such as efflux transporters and the approaches for overcoming such
barriers. The approaches illustrated in this review include: utilizing natural
occurring transporters to deliver drugs specifically to their targets,
nucleoside analogues delivery, CYP-activated prodrugs that target drugs to the
liver, modification of passive diffusion by efflux pumps, intestinal
transporters such as PEPT1 and GLUT1, Carrier Mediated Transport (CMT) systems
for transporting nutrients, vitamins or hormones into the central nervous
system, tissue selective drug delivery, administration of an exogenous enzyme
to reach the tumor site which is followed by systemic administration of
non-toxic prodrugs (ADEPT, GDEPT and VDEPT), enzymes involve in the
bioconversion of ester-based prodrugs for activation (hydrolysis) of prodrugs
to their active forms, brain targeted Chemical Delivery Systems (CDS), amino
acid prodrugs to improve oral bioavailability, sustained drug delivery and
intravenous drug delivery. Furthermore, Receptor-Mediated Transcytosis (RMT)
for efficacious delivery of Nano particles via the intestinal mucosa and BBB,
and the prodrug chemical approach based on intra molecularity to deliver
anti-cancer drugs is discussed.
Author(s) Details
Professor Rafik Karaman
Department of Bioorganic
Chemistry, Faculty of Pharmacy, Al-Quds University, P.O. Box 20002, Jerusalem,
Palestine and Department of Sciences, University of Basilicata, Viadell’Ateneo
Lucano 10, 85100, Potenza, Italy.
Wajd Amly
Department of Bioorganic
Chemistry, Faculty of Pharmacy, Al-Quds University, P.O. Box 20002, Jerusalem,
Palestine.
View Volume: https://doi.org/10.9734/bpi/mapr/v2
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