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Liposome-Mediated Anti-Viral Drug Delivery Across Blood–Brain Barrier: Can Lipid Droplet Target Be Game Changers?

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Abstract

Lipid droplets (LDs) are subcellular organelles secreted from the endoplasmic reticulum (ER) that play a major role in lipid homeostasis. Recent research elucidates additional roles of LDs in cellular bioenergetics and innate immunity. LDs activate signaling cascades for interferon response and secretion of pro-inflammatory cytokines. Since balanced lipid homeostasis is critical for neuronal health, LDs play a crucial role in neurodegenerative diseases. RNA viruses enhance the secretion of LDs to support various phases of their life cycle in neurons which further leads to neurodegeneration. Targeting the excess LD formation in the brain could give us a new arsenal of antiviral therapeutics against neuroviruses. Liposomes are a suitable drug delivery system that could be used for drug delivery in the brain by crossing the Blood–Brain Barrier. Utilizing this, various pharmacological inhibitors and non-coding RNAs can be delivered that could inhibit the biogenesis of LDs or reduce their sizes, reversing the excess lipid-related imbalance in neurons.

Graphical Abstract

Liposome-Mediated Antiviral Drug Delivery Across Blood-Brain Barrier.

Developing effective antiviral drug is challenging and it doubles against neuroviruses that needs delivery across the Blood–Brain Barrier (BBB). Lipid Droplets (LDs) are interesting targets for developing antivirals, hence targeting LD formation by drugs delivered using Liposomes can be game changers.

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Abbreviations

LDs:

Lipid droplets

ER:

Endoplasmic reticulum

TAGs:

Triacylglycerols

DAGs:

Diacylglycerols

SEs:

Sterol esters

BBB:

Blood–Brain Barrier

DGAT:

Diacylglycerol acyltransferase

GPAT:

Glycerol 3 phosphate acyltransferase

AGPAT:

Acylglycerol 3 phosphate

PAP:

Phosphatidate phosphate

FATP:

Fatty acid transport protein

MGAT2:

Monoacylglycerol acyltransferase

SCD1:

Stearoyl-CoA Desaturase 1

nLDs:

Nuclear lipid droplets

PLIN5:

Perilipin 5

PLIN1:

Perilipn 1

PLIN2:

Perilipn 2

PLIN3:

Perilipn 3

PKA:

Protein kinase A

PKB:

Protein kinase B

SIRT1:

Sirtuin1

CRABP1:

Cellular retinoic acid-binding protein 1

ATRA:

All-transretinoic Acid

TLR:

Toll-like receptor

EGF:

Epidermal growth factor

RIG-I:

Retinoic acid-inducible gene-I

PRR:

Patter recognition receptor

IFNs:

Interferons

NDRG1:

N-myc downstream-regulated gene 1

USP15:

Ubiquitin Specific Peptidase 15

PGC-1:

Peroxisome proliferator-activated receptor gamma 1

AMPK:

AMP-activated protein kinase

LDMC:

Lipid droplets mitochondrial coupling

MFN2:

Mitofusin2

CMA:

Chaperon-mediated autophagy

LDAF1:

Lipid droplet assembly factor 1

MGAT2:

Monoacylglycerol acetyltransferase 2

FATP:

Fatty acid transporter protein

SCD1:

Stearoyl COA desaturase 1

IGTP:

Interferon-gamma inducible guanine

IFI47:

Interferon-gamma inducible protein

IIGP1:

Interferon-inducible guanine triphosphatase 1

TGTP1:

T cell-specific GTPase1

cPLA2:

Phospholipase A2

SREBP:

Sterol regulatory binding element protein

SKI-1/S1P:

Subtilisin kexin isozyme-1/site 1 protease

PI3K:

Phosphoinositide 3-kinase

AUP1:

Ancient ubiquitous protein 1

NS4A:

Nonstructural protein 4A

NS4B:

Nonstructural protein 4B

NS5A:

Nonstructural protein 5A

NS3:

Nonstructural protein 3

DENV:

Dengue virus

JEV:

Japanese encephalitis virus

ADRP:

Adipose differentiation-related protein

PARγ:

Peroxisome proliferator-activated receptor gamma

HSL:

Hormone-sensitive lipase

ATGL:

Adipose triglyceride lipase

ZIKAV:

Zika virus

HCV:

Hepatitis C virus

MAP1LC3:

Microtube-associated protein 1 light chain 3

AD:

Alzheimer's disease

PD:

Parkinson's disease

ALS:

Amyotrophic lateral sclerosis

MCT:

Monocarboxylate transporter

JNK:

C jun N terminal kinase

αSyn:

Alpha-synuclein

CNS:

Central nervous system

ROS:

Reactive oxygen species

MRP:

Multidrug resistance-associated protein

ABC:

ATP binding cassette

P-gp:

P glycoprotein

DMPC:

Dimyristoyl-sn-glycerol-3-phosphocholine

DMPG:

1,2-Dimyristoyl-sn-glycerol-3-phosphoglycerol

DSPE:

1,2-Distearoyl-sn-glycerol-3-phosphoethanolamine

PEG:

Polyethylene glycol

FIT:

Fat storage-inducing transmembrane protein

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Acknowledgements

SG, SM acknowledge the support from CSIR-IICB; SM acknowledges Academy of Scientific and Innovative Research (AcSIR), Ghaziabad- 201002, India.

Funding

This work was supported by the Ramalingaswami Re-entry Fellowship, Department of Biotechnology, India, (BT/RLF/Re-entry/46/2021) awarded to SG. Fellowship of SM is supported by UGC, India.

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Contributions

SG conceived the theme of the review; SM, and SG performed the literature search and constructed the manuscript and figures. The authors also acknowledge Biorender.com as the platform used for the illustration of the figures.

Corresponding author

Correspondence to Sourish Ghosh.

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The authors declare no conflict of interest and the sponsors had no role in the design, execution, interpretation, or writing of the study.

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Mondal, S., Ghosh, S. Liposome-Mediated Anti-Viral Drug Delivery Across Blood–Brain Barrier: Can Lipid Droplet Target Be Game Changers?. Cell Mol Neurobiol 44, 9 (2024). https://doi.org/10.1007/s10571-023-01443-4

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