Title:Nanomedicines for Subcellular Targeting: The Mitochondrial Perspective
Volume: 27
Issue: 33
Author(s): Olakunle Oladimeji, Jude Akinyelu and Moganavelli Singh*
Affiliation:
- Nano-Gene and Drug Delivery Group, Discipline of Biochemistry, School of Life Sciences, University of Kwa-Zulu Natal, Private Bag X54001, Durban,South Africa
Keywords:
Subcellular, targeting, mitochondria, therapeutics, nanomedicine, nanocarriers.
Abstract:
Background: Over the past decade, there has been a surge in the number of mitochondrialactive
therapeutics for conditions ranging from cancer to aging. Subcellular targeting interventions
can modulate adverse intracellular processes unique to the compartments within the cell. However,
there is a dearth of reviews focusing on mitochondrial nano-delivery, and this review seeks to fill this
gap with regards to nanotherapeutics of the mitochondria.
Methods: Besides its potential for a higher therapeutic index than targeting at the tissue and cell levels,
subcellular targeting takes into account the limitations of systemic drug administration and significantly
improves pharmacokinetics. Hence, an extensive literature review was undertaken and salient
information was compiled in this review.
Results: From literature, it was evident that nanoparticles with their tunable physicochemical properties
have shown potential for efficient therapeutic delivery, with several nanomedicines already approved
by the FDA and others in clinical trials. However, strategies for the development of nanomedicines
for subcellular targeting are still emerging, with an increased understanding of dysfunctional
molecular processes advancing the development of treatment modules. For optimal delivery, the design
of an ideal carrier for subcellular delivery must consider the features of the diseased
microenvironment. The functional and structural features of the mitochondria in the diseased state are
highlighted and potential nano-delivery interventions for treatment and diagnosis are discussed.
Conclusion: This review provides an insight into recent advances in subcellular targeting, with a
focus on en route barriers to subcellular targeting. The impact of mitochondrial dysfunction in the
aetiology of certain diseases is highlighted, and potential therapeutic sites are identified.