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Caobi A, Bonilla J, Gomez M, Andre M, Yndart A, Fernandez-Lima FA, Nair MP, Raymond AD. HIV-1 and opiates modulate miRNA profiles in extracellular vesicles. Front Immunol 2023; 14:1259998. [PMID: 38022533 PMCID: PMC10666642 DOI: 10.3389/fimmu.2023.1259998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/03/2023] [Indexed: 12/01/2023] Open
Abstract
Opiate abuse increases the risk of HIV transmission and exacerbates HIV neuropathology by increasing inflammation and modulating immune cell function. Exosomal EVs(xEV) contain miRNAs that may be differentially expressed due to HIV infection or opiate abuse. Here we develop a preliminary exosomal-miRNA biomarker profile of HIV-infected PBMCs in the context of opiate use. PBMCs infected with HIV were treated with increasing dosages of morphine for 72 hours, the culture supernatants were collected, and the exosomes isolated using differential centrifugation. Exosomal miRNAs were extracted, expression levels determined via Nanostring multiplexed microRNA arrays, and analyzed with Webgestalt. The effect of the exosomes on neuronal function was determined by measuring calcium. Preliminary findings show that HIV-1 infection altered the miRNA profile of PBMC-derived EVs concurrently with opiate exposure. MicroRNA, hsa-miR-1246 was up-regulated 12-fold in the presence of morphine, relative to uninfected control. PBMCs infected with HIV-1 MN, an X4-tropic HIV-1 strain and exposed to morphine, displayed a trend which suggests potential synergistic effects between HIV-1 infection and morphine exposure promoting an increase in viral replication. Dose-dependent differences were observed in miRNA expression as a result of opiate exposure. The xEVs derived from PBMCs exposed to morphine or HIV modulated neuronal cell function. SH-SY5Y cells, treated with xEVs derived from ART-treated PBMCs, exhibited increased viability while for SH-SY5Ys exposed to xEVs derived from HIV-1 infected PBMCs viability was decreased compared to the untreated control. Exposing SH-SY5Y to xEVs derived from HIV-infected PBMCs resulted in significant decrease in calcium signaling, relative to treatment with xEVs derived from uninfected PBMCs. Overall, HIV-1 and morphine induced differential miRNA expression in PBMC-derived exosomes, potentially identifying mechanisms of action or novel therapeutic targets involved in opiate use disorder, HIV neuropathology, TNF signaling pathway, NF-κB signaling pathway, autophagy, and apoptosis in context of HIV infection.
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Affiliation(s)
- Allen Caobi
- Herbert Wertheim College of Medicine at Florida International University, Department of Immunology and Nanomedicine, Miami, FL, United States
| | - Jesenia Bonilla
- Florida Memorial University, School of Arts and Sciences, Department of Health and Natural Sciences, Miami Gardens, FL, United States
| | - Mario Gomez
- College of Arts, Sciences, and Education at Florida International University, Department of Chemistry, Miami, FL, United States
| | - Mickensone Andre
- Herbert Wertheim College of Medicine at Florida International University, Department of Immunology and Nanomedicine, Miami, FL, United States
| | - Adriana Yndart
- Herbert Wertheim College of Medicine at Florida International University, Department of Immunology and Nanomedicine, Miami, FL, United States
| | - Francisco A. Fernandez-Lima
- College of Arts, Sciences, and Education at Florida International University, Department of Chemistry, Miami, FL, United States
| | - Madhavan P. Nair
- Herbert Wertheim College of Medicine at Florida International University, Department of Immunology and Nanomedicine, Miami, FL, United States
- Institute of Neuroimmune Pharmacology in Herbert Wertheim College of Medicine at Florida International University, Miami, FL, United States
| | - Andrea D. Raymond
- Herbert Wertheim College of Medicine at Florida International University, Department of Immunology and Nanomedicine, Miami, FL, United States
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Caobi A, Werne R, Gomez M, Andre M, Thomas C, Yndart A, Lima-Hernandez F, Nair M, Raymond AD. Protein cargo of Nef-containing exosomal extracellular vesicles may predict HIV-associated Neurocognitive Impairment status. Res Sq 2023:rs.3.rs-2740135. [PMID: 37214960 PMCID: PMC10197801 DOI: 10.21203/rs.3.rs-2740135/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Exosomal extracellular vesicles (xEVs) in plasma and cerebrospinal fluid (CSF) of aviremic people living with HIV/AIDS (PLWHA) contain the HIV Negative factor (Nef) protein. However, the role of xEVs and Nef-containing-xEVs(xEV-Nef) in HIV-associated neuropathology is unknown. Here we performed a cross-sectional analysis of the content of xEVs derived from matched serum and CSF samples of PLWHAs diagnosed with either asymptomatic neurocognitive impairment (ANI), mild neurocognitive disorder (MND), or HIV-associated dementia (HAD). The overall objective was to determine whether the content of the matched xEVs derived plasma or CSF correlated with the neurocognitive impairment (NCI) status. The size and protein content of the xEVs were characterized via dynamic light scattering (DLS) and LC-MS/MS, respectively. xEV size was not significantly different between ANI, MND, or HAD groups. CSF of PLWHAs with NCI contained significantly more xEVs than matched plasma. xEV-Nef CSF concentration was elevated in PLWHAs with NCI and correlated with CD4 T-cell count. Plasma-derived xEV protein profiles from PLWHAs with ANI or MND differed from PLWHAs without NCI. Over-representation analysis using Reactome and KEGG databases show proteins involved in pathways associated with heme scavenging, signaling(MAP kinase and integrin-alpha),Toll-like receptor regulation, clot formation, complement, and cytosolic calcium level were elevated in MND. Pathways upregulated within the ANI group involved high-density lipid (HDL) remodeling, post-translational protein phosphorylation, and platelet activation. Overall, the data shows that xEV protein profiles of ANI and MND differ, suggesting protein profiles of peripheral xEVs, xEV-Nef, and CD4 T-cell count may discern NCI status.
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Affiliation(s)
- Allen Caobi
- Herbert Wertheim College of Medicine at Florida International University, Department of Immunology and Nanomedicine, Miami, 33199, USA
| | - Rachel Werne
- Herbert Wertheim College of Medicine at Florida International University, Department of Immunology and Nanomedicine, Miami, 33199, USA
| | - Mario Gomez
- College of Arts, Sciences, and Education at Florida International University; Department of Chemistry and Biochemistry; Advanced Mass Spectrometry Facility, Miami, FL 33199
| | - Mickensone Andre
- Herbert Wertheim College of Medicine at Florida International University, Department of Immunology and Nanomedicine, Miami, 33199, USA
| | - Charo Thomas
- Herbert Wertheim College of Medicine at Florida International University, Department of Immunology and Nanomedicine, Miami, 33199, USA
| | - Adriana Yndart
- Herbert Wertheim College of Medicine at Florida International University, Department of Immunology and Nanomedicine, Miami, 33199, USA
| | - Francisco Lima-Hernandez
- College of Arts, Sciences, and Education at Florida International University; Department of Chemistry and Biochemistry; Advanced Mass Spectrometry Facility, Miami, FL 33199
| | - Madhavan Nair
- Herbert Wertheim College of Medicine at Florida International University, Department of Immunology and Nanomedicine, Miami, 33199, USA
| | - Andrea D Raymond
- Herbert Wertheim College of Medicine at Florida International University, Department of Immunology and Nanomedicine, Miami, 33199, USA
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Manevski M, Devadoss D, Castro R, Delatorre L, Yndart A, Jayant RD, Nair M, Chand HS. Development and Challenges of Nanotherapeutic Formulations for Targeting Mitochondrial Cell Death Pathways in Lung and Brain Degenerative Diseases. Crit Rev Biomed Eng 2021; 48:137-152. [PMID: 33389892 DOI: 10.1615/critrevbiomedeng.2020034546] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Mitochondria are among the most dynamic organelles regulating a wide array of cellular processes. They are the cellular hub for oxidative phosphorylation, energy production, and cellular metabolism, and they are important determinants of cell fate, as they control cell death/survival pathways. The mitochondrial network plays a critical role in cellular inflammatory responses, and mitochondria are central in many pathologic conditions such as chronic inflammatory and aging-associated degenerative diseases. Recent advancements in our understanding of the pathogenic pathways and the role of mitochondria therein have identified highly specific therapeutic targets in order to develop personalized nanomedicine approaches for treatment. A wide array of nanoparticle-based formulations has been employed for potential usage in both diagnosing and treating chronic and fatal conditions, with gold nanoparticles and liposomal encapsulation being of particular interest. In this review, we highlight and summarize the advantages and challenges of developing these nanoformulations for targeted and spatiotemporally controlled drug delivery. We discuss the potential of nanotherapy in neoplasms to target the mitochondrial regulated cell death pathways and recent seminal developments in liposomal nanotherapy against chronic inflammatory lung diseases. The need for further development of nanoparticle-based treatment options for neuroinflammatory and neurodegenerative conditions, such as Alzheimer's disease (AD), is also discussed.
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Affiliation(s)
- Marko Manevski
- Department of Immunology and NanoMedicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL
| | - Dinesh Devadoss
- Department of Immunology and NanoMedicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL
| | - Ruben Castro
- Department of Immunology and NanoMedicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL
| | - Lauren Delatorre
- Department of Immunology and NanoMedicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL
| | - Adriana Yndart
- Department of Immunology and NanoMedicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL
| | - Rahul D Jayant
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX
| | - Madhavan Nair
- Department of Immunology and Nano-Medicine Institute of NeuroImmune Pharmacology, Centre for Personalized Nanomedicine Herbert Wertheim College of Medicine Florida International University, Miami, Florida 33199, USA
| | - Hitendra S Chand
- Department of Immunology and NanoMedicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL
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Atluri VSR, Tiwari S, Rodriguez M, Kaushik A, Yndart A, Kolishetti N, Yatham M, Nair M. Inhibition of Amyloid-Beta Production, Associated Neuroinflammation, and Histone Deacetylase 2-Mediated Epigenetic Modifications Prevent Neuropathology in Alzheimer's Disease in vitro Model. Front Aging Neurosci 2020; 11:342. [PMID: 32009938 PMCID: PMC6974446 DOI: 10.3389/fnagi.2019.00342] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 11/25/2019] [Indexed: 12/17/2022] Open
Abstract
Alzheimer’s disease (AD) is a growing global threat to healthcare in the aging population. In the USA alone, it is estimated that one in nine persons over the age of 65 years is living with AD. The pathology is marked by the accumulation of amyloid-beta (Aβ) deposition in the brain, which is further enhanced by the neuroinflammatory process. Nucleotide-binding oligomerization domain, leucine rich repeat and pyrin domain containing 3 (NLRP3) and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) are the major neuroinflammatory pathways that intensify AD pathogenesis. Histone deacetylase 2 (HDAC2)-mediated epigenetic mechanisms play a major role in the genesis and neuropathology of AD. Therefore, therapeutic drugs, which can target Aβ production, NLRP3 activation, and HDAC2 levels, may play a major role in reducing Aβ levels and the prevention of associated neuropathology of AD. In this study, we demonstrate that withaferin A (WA), an extract from Withania somnifera plant, significantly inhibits the Aβ production and NF-κB associated neuroinflammatory molecules’ gene expression. Furthermore, we demonstrate that cytokine release inhibitory drug 3 (CRID3), an inhibitor of NLRP3, significantly prevents inflammasome-mediated gene expression in our in vitro AD model system. We have also observed that mithramycin A (MTM), an HDAC2 inhibitor, significantly upregulated the synaptic plasticity gene expression and downregulated HDAC2 in SH-SY5Y cells overexpressing amyloid precursor protein (SH-APP cells). Therefore, the introduction of these agents targeting Aβ production, NLRP3-mediated neuroinflammation, and HDAC2 levels will have a translational significance in the prevention of neuroinflammation and associated neurodegeneration in AD patients.
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Affiliation(s)
- Venkata Subba Rao Atluri
- Department of Immunology and Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | - Sneham Tiwari
- Department of Immunology and Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | - Melisa Rodriguez
- Department of Immunology and Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | - Ajeet Kaushik
- Division of Sciences, Art, & Mathematics, Department of Natural Sciences, Florida Polytechnic University, Lakeland, FL, United States
| | - Adriana Yndart
- Department of Immunology and Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | - Nagesh Kolishetti
- Department of Immunology and Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | - Mohan Yatham
- Department of Immunology and Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
| | - Madhavan Nair
- Department of Immunology and Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States
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Tiwari S, Atluri V, Kaushik A, Yndart A, Nair M. Alzheimer's disease: pathogenesis, diagnostics, and therapeutics. Int J Nanomedicine 2019; 14:5541-5554. [PMID: 31410002 PMCID: PMC6650620 DOI: 10.2147/ijn.s200490] [Citation(s) in RCA: 516] [Impact Index Per Article: 103.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 03/02/2019] [Indexed: 12/12/2022] Open
Abstract
Currently, 47 million people live with dementia globally, and it is estimated to increase more than threefold (~131 million) by 2050. Alzheimer's disease (AD) is one of the major causative factors to induce progressive dementia. AD is a neurodegenerative disease, and its pathogenesis has been attributed to extracellular aggregates of amyloid β (Aβ) plaques and intracellular neurofibrillary tangles made of hyperphosphorylated τ-protein in cortical and limbic areas of the human brain. It is characterized by memory loss and progressive neurocognitive dysfunction. The anomalous processing of APP by β-secretases and γ-secretases leads to production of Aβ40 and Aβ42 monomers, which further oligomerize and aggregate into senile plaques. The disease also intensifies through infectious agents like HIV. Additionally, during disease pathogenesis, the presence of high concentrations of Aβ peptides in central nervous system initiates microglial infiltration. Upon coming into vicinity of Aβ, microglia get activated, endocytose Aβ, and contribute toward their clearance via TREM2 surface receptors, simultaneously triggering innate immunoresponse against the aggregation. In addition to a detailed report on causative factors leading to AD, the present review also discusses the current state of the art in AD therapeutics and diagnostics, including labeling and imaging techniques employed as contrast agents for better visualization and sensing of the plaques. The review also points to an urgent need for nanotechnology as an efficient therapeutic strategy to increase the bioavailability of drugs in the central nervous system.
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Affiliation(s)
- Sneham Tiwari
- Department of Immunology and Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL33199, USA
| | - Venkata Atluri
- Department of Immunology and Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL33199, USA
| | - Ajeet Kaushik
- Department of Immunology and Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL33199, USA
| | - Adriana Yndart
- Department of Immunology and Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL33199, USA
| | - Madhavan Nair
- Department of Immunology and Nano-Medicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL33199, USA
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Kaushik A, Yndart A, Atluri V, Tiwari S, Tomitaka A, Gupta P, Jayant RD, Alvarez-Carbonell D, Khalili K, Nair M. Magnetically guided non-invasive CRISPR-Cas9/gRNA delivery across blood-brain barrier to eradicate latent HIV-1 infection. Sci Rep 2019; 9:3928. [PMID: 30850620 PMCID: PMC6408460 DOI: 10.1038/s41598-019-40222-4] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 01/30/2019] [Indexed: 12/29/2022] Open
Abstract
CRISPR-Cas9/gRNA exhibits therapeutic efficacy against latent human immunodeficiency virus (HIV) genome but the delivery of this therapeutic cargo to the brain remains as a challenge. In this research, for the first time, we demonstrated magnetically guided non-invasive delivery of a nano-formulation (NF), composed of Cas9/gRNA bound with magneto-electric nanoparticles (MENPs), across the blood-brain barrier (BBB) to inhibit latent HIV-1 infection in microglial (hμglia)/HIV (HC69) cells. An optimized ac-magnetic field of 60 Oe was applied on NF to release Cas9/gRNA from MENPs surface and to facilitate NF cell uptake resulting in intracellular release and inhibition of HIV. The outcomes suggested that developed NF reduced HIV-LTR expression significantly in comparison to unbound Cas9/gRNA in HIV latent hμglia/HIV (HC69) cells. These findings were also validated qualitatively using fluorescence microscopy to assess NF efficacy against latent HIV in the microglia cells. We believe that CNS delivery of NF (CRISPR/Cas9-gRNA-MENPs) across the BBB certainly will have clinical utility as future personalized nanomedicine to manage neuroHIV/AIDS.
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Affiliation(s)
- Ajeet Kaushik
- Department of Immunology and Nano-Medicine, Center for Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Adriana Yndart
- Department of Immunology and Nano-Medicine, Center for Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Venkata Atluri
- Department of Immunology and Nano-Medicine, Center for Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Sneham Tiwari
- Department of Immunology and Nano-Medicine, Center for Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Asahi Tomitaka
- Department of Immunology and Nano-Medicine, Center for Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Purnima Gupta
- Department of Immunology and Nano-Medicine, Center for Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Rahul Dev Jayant
- Department of Immunology and Nano-Medicine, Center for Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - David Alvarez-Carbonell
- Department of Molecular Biology and Microbiology, Case Western Reserve University, Cleveland, OH, USA
| | - Kamel Khalili
- Department of Neuroscience, Lewis Katz School of Medicine, Temple University, Philadelphia, 19140, USA
| | - Madhavan Nair
- Department of Immunology and Nano-Medicine, Center for Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA.
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Jayant RD, Tiwari S, Atluri V, Kaushik A, Tomitaka A, Yndart A, Colon-Perez L, Febo M, Nair M. Multifunctional Nanotherapeutics for the Treatment of neuroAIDS in Drug Abusers. Sci Rep 2018; 8:12991. [PMID: 30154522 PMCID: PMC6113246 DOI: 10.1038/s41598-018-31285-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 08/07/2018] [Indexed: 01/09/2023] Open
Abstract
HIV and substance abuse plays an important role in infection and disease progression. Further, the presence of persistent viral CNS reservoirs makes the complete eradication difficult. Thus, neutralizing the drug of abuse effect on HIV-1 infectivity and elimination of latently infected cells is a priority. The development of a multi-component [antiretroviral drugs (ARV), latency reactivating agents (LRA) and drug abuse antagonist (AT)] sustained release nanoformulation targeting the CNS can overcome the issues of HIV-1 cure and will help in improving the drug adherence. The novel magneto-liposomal nanoformulation (NF) was developed to load different types of drugs (LRAs, ARVs, and Meth AT) and evaluated for in-vitro and in-vivo BBB transmigration and antiviral efficacy in primary CNS cells. We established the HIV-1 latency model using human astrocyte cells (HA) and optimized the dose of LRA for latency reversal, Meth AT in in-vitro cell culture system. Further, PEGylated magneto-liposomal NF was developed, characterized for size, shape, drug loading and BBB transport in-vitro. Results showed that drug released in a sustained manner up to 10 days and able to reduce the HIV-1 infectivity up to ~40-50% (>200 pg/mL to <100 pg/mL) continuously using single NF treatment ± Meth treatment in-vitro. The magnetic treatment (0.8 T) was able to transport (15.8% ± 5.5%) NF effectively without inducing any toxic effects due to NF presence in the brain. Thus, our approach and result showed a way to eradicate HIV-1 reservoirs from the CNS and possibility to improve the therapeutic adherence to drugs in drug abusing (Meth) population. In conclusion, the developed NF can provide a better approach for the HIV-1 cure and a foundation for future HIV-1 purging strategies from the CNS using nanotechnology platform.
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Affiliation(s)
- Rahul Dev Jayant
- Institute of NeuroImmune Pharmacology, Center for Personalized Nanomedicine, Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA.
| | - Sneham Tiwari
- Institute of NeuroImmune Pharmacology, Center for Personalized Nanomedicine, Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Venkata Atluri
- Institute of NeuroImmune Pharmacology, Center for Personalized Nanomedicine, Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Ajeet Kaushik
- Institute of NeuroImmune Pharmacology, Center for Personalized Nanomedicine, Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Asahi Tomitaka
- Institute of NeuroImmune Pharmacology, Center for Personalized Nanomedicine, Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Adriana Yndart
- Institute of NeuroImmune Pharmacology, Center for Personalized Nanomedicine, Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Luis Colon-Perez
- Department of Psychiatry, The McKnight Brain Institute, University of Florida, Gainesville, FL, 33610, USA
| | - Marcelo Febo
- Department of Psychiatry, The McKnight Brain Institute, University of Florida, Gainesville, FL, 33610, USA
| | - Madhavan Nair
- Institute of NeuroImmune Pharmacology, Center for Personalized Nanomedicine, Department of Immunology and Nano-Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA.
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Kaushik A, Yndart A, Kumar S, Jayant RD, Vashist A, Brown AN, Li CZ, Nair M. A sensitive electrochemical immunosensor for label-free detection of Zika-virus protein. Sci Rep 2018; 8:9700. [PMID: 29946074 PMCID: PMC6018776 DOI: 10.1038/s41598-018-28035-3] [Citation(s) in RCA: 103] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 06/14/2018] [Indexed: 12/16/2022] Open
Abstract
This work, as a proof of principle, presents a sensitive and selective electrochemical immunosensor for Zika-virus (ZIKV)-protein detection using a functionalized interdigitated micro-electrode of gold (IDE-Au) array. A miniaturized IDE-Au immunosensing chip was prepared via immobilization of ZIKV specific envelop protein antibody (Zev-Abs) onto dithiobis(succinimidyl propionate) i.e., (DTSP) functionalized IDE-Au (electrode gap/width of 10 µm). Electrochemical impedance spectroscopy (EIS) was performed to measure the electrical response of developed sensing chip as a function of ZIKV-protein concentrations. The results of EIS studies confirmed that sensing chip detected ZIKV-protein selectively and exhibited a detection range from 10 pM to 1 nM and a detection limit of 10 pM along with a high sensitivity of 12 kΩM-1. Such developed ZIKV immune-sensing chip can be integrated with a miniaturized potentiostat (MP)-interfaced with a smartphone for rapid ZIKV-infection detection required for early stage diagnostics at point-of-care application.
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Affiliation(s)
- Ajeet Kaushik
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, 33199, USA.
| | - Adriana Yndart
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, 33199, USA
| | - Sanjeev Kumar
- Biomedical Instrumentation, CSIR-Central Scientific Instruments Organization, Sector 30-C, Chandigarh, 160030, India
| | - Rahul Dev Jayant
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, 33199, USA
| | - Arti Vashist
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, 33199, USA
| | - Ashley N Brown
- Institute for Therapeutic Innovation, Department of Medicine, College of Medicine, University of Florida, Orlando, Florida, 32827, USA
| | - Chen-Zhong Li
- Nanobioengineering/Bioelectronics Laboratory, Department of Biomedical Engineering, Florida International University, 10555 West Flagler Street, Miami, Florida, 33174, USA
| | - Madhavan Nair
- Center of Personalized Nanomedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida, 33199, USA.
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Tomitaka A, Arami H, Raymond A, Yndart A, Kaushik A, Jayant RD, Takemura Y, Cai Y, Toborek M, Nair M. Development of magneto-plasmonic nanoparticles for multimodal image-guided therapy to the brain. Nanoscale 2017; 9:764-773. [PMID: 27976764 PMCID: PMC5325696 DOI: 10.1039/c6nr07520g] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Magneto-plasmonic nanoparticles are one of the emerging multi-functional materials in the field of nanomedicine. Their potential for targeting and multi-modal imaging is highly attractive. In this study, magnetic core/gold shell (MNP@Au) magneto-plasmonic nanoparticles were synthesized by citrate reduction of Au ions on magnetic nanoparticle seeds. Hydrodynamic size and optical properties of magneto-plasmonic nanoparticles synthesized with the variation of Au ions and reducing agent concentrations were evaluated. The synthesized magneto-plasmonic nanoparticles exhibited superparamagnetic properties, and their magnetic properties contributed to the concentration-dependent contrast in magnetic resonance imaging (MRI). The imaging contrast from the gold shell part of the magneto-plasmonic nanoparticles was also confirmed by X-ray computed tomography (CT). The transmigration study of the magneto-plasmonic nanoparticles using an in vitro blood-brain barrier (BBB) model proved enhanced transmigration efficiency without disrupting the integrity of the BBB, and showed potential to be used for brain diseases and neurological disorders.
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Affiliation(s)
- Asahi Tomitaka
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, USA.
| | - Hamed Arami
- Molecular Imaging Program at Stanford (MIPS), The James H Clark Center, Stanford University, Stanford, California 94305, USA and Department of Radiology, Stanford University School of Medicine, Stanford, California 94305, USA
| | - Andrea Raymond
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, USA.
| | - Adriana Yndart
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, USA.
| | - Ajeet Kaushik
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, USA.
| | - Rahul Dev Jayant
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, USA.
| | - Yasushi Takemura
- Department of Electrical and Computer Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - Yong Cai
- Department of Chemistry & Biochemistry, Southeast Environmental Research Center, Florida International University, Miami, Florida 33199, USA
| | - Michal Toborek
- Department of Biochemistry and Molecular Biology, University of Miami School of Medicine, Miami, Florida 33136, USA
| | - Madhavan Nair
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, USA. and Department of Immunology, Institute of NeuroImmune Pharmacology, Centre for Personalized Nanomedicine, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, USA
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10
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Atluri VSR, Jayant RD, Pilakka-Kanthikeel S, Garcia G, Samikkannu T, Yndart A, Kaushik A, Nair M. Development of TIMP1 magnetic nanoformulation for regulation of synaptic plasticity in HIV-1 infection. Int J Nanomedicine 2016; 11:4287-98. [PMID: 27621622 PMCID: PMC5012635 DOI: 10.2147/ijn.s108329] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Although the introduction of antiretroviral therapy has reduced the prevalence of severe forms of neurocognitive disorders, human immunodeficiency virus (HIV)-1-associated neurocognitive disorders were observed in 50% of HIV-infected patients globally. The blood–brain barrier is known to be impermeable to most of antiretroviral drugs. Successful delivery of antiretroviral drugs into the brain may induce an inflammatory response, which may further induce neurotoxicity. Therefore, alternate options to antiretroviral drugs for decreasing the HIV infection and neurotoxicity may help in reducing neurocognitive impairments observed in HIV-infected patients. In this study, we explored the role of magnetic nanoparticle (MNP)-bound tissue inhibitor of metalloproteinase-1 (TIMP1) protein in reducing HIV infection levels, oxidative stress, and recovering spine density in HIV-infected SK-N-MC neuroblastoma cells. We did not observe any neuronal cytotoxicity with either the free TIMP1 or MNP-bound TIMP1 used in our study. We observed significantly reduced HIV infection in both solution phase and in MNP-bound TIMP1-exposed neuronal cells. Furthermore, we also observed significantly reduced reactive oxygen species production in both the test groups compared to the neuronal cells infected with HIV alone. To observe the effect of both soluble-phase TIMP1 and MNP-bound TIMP1 on spine density in HIV-infected neuronal cells, confocal microscopy was used. We observed significant recovery of spine density in both the test groups when compared to the cells infected with HIV alone, indicting the neuroprotective effect of TIMP1. Therefore, our results suggest that the MNP-bound TIMP1 delivery method across the blood–brain barrier can be used for reducing HIV infectivity in brain tissue and neuronal toxicity in HIV-infected patients.
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Affiliation(s)
- Venkata Subba Rao Atluri
- Center for Personalized Nanomedicine, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Rahul Dev Jayant
- Center for Personalized Nanomedicine, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Sudheesh Pilakka-Kanthikeel
- Center for Personalized Nanomedicine, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Gabriella Garcia
- Center for Personalized Nanomedicine, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Thangavel Samikkannu
- Center for Personalized Nanomedicine, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Adriana Yndart
- Center for Personalized Nanomedicine, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Ajeet Kaushik
- Center for Personalized Nanomedicine, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Madhavan Nair
- Center for Personalized Nanomedicine, Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
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11
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Agudelo M, Figueroa G, Parira T, Yndart A, Muñoz K, Atluri V, Samikkannu T, Nair MP. Profile of Class I Histone Deacetylases (HDAC) by Human Dendritic Cells after Alcohol Consumption and In Vitro Alcohol Treatment and Their Implication in Oxidative Stress: Role of HDAC Inhibitors Trichostatin A and Mocetinostat. PLoS One 2016; 11:e0156421. [PMID: 27249803 PMCID: PMC4889108 DOI: 10.1371/journal.pone.0156421] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Accepted: 05/14/2016] [Indexed: 01/14/2023] Open
Abstract
Epigenetic mechanisms have been shown to play a role in alcohol use disorders (AUDs) and may prove to be valuable therapeutic targets. However, the involvement of histone deacetylases (HDACs) on alcohol-induced oxidative stress of human primary monocyte-derived dendritic cells (MDDCs) has not been elucidated. In the current study, we took a novel approach combining ex vivo, in vitro and in silico analyses to elucidate the mechanisms of alcohol-induced oxidative stress and role of HDACs in the periphery. ex vivo and in vitro analyses of alcohol-modulation of class I HDACs and activity by MDDCs from self-reported alcohol users and non-alcohol users was performed. Additionally, MDDCs treated with alcohol were assessed using qRT-PCR, western blot, and fluorometric assay. The functional effects of alcohol-induce oxidative stress were measured in vitro using PCR array and in silico using gene expression network analysis. Our findings show, for the first time, that MDDCs from self-reported alcohol users have higher levels of class I HDACs compare to controls and alcohol treatment in vitro differentially modulates HDACs expression. Further, HDAC inhibitors (HDACi) blocked alcohol-induction of class I HDACs and modulated alcohol-induced oxidative stress related genes expressed by MDDCs. In silico analysis revealed new target genes and pathways on the mode of action of alcohol and HDACi. Findings elucidating the ability of alcohol to modulate class I HDACs may be useful for the treatment of alcohol-induced oxidative damage and may delineate new potential immune-modulatory mechanisms.
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Affiliation(s)
- Marisela Agudelo
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
- Institute on NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
- * E-mail:
| | - Gloria Figueroa
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
| | - Tiyash Parira
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
| | - Adriana Yndart
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
- Institute on NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
| | - Karla Muñoz
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
- Institute on NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
| | - Venkata Atluri
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
- Institute on NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
| | - Thangavel Samikkannu
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
- Institute on NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
| | - Madhavan P. Nair
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
- Institute on NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, United States of America
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12
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Agudelo M, Figueroa G, Yndart A, Casteleiro G, Muñoz K, Samikkannu T, Atluri V, Nair MP. Alcohol and Cannabinoids Differentially Affect HIV Infection and Function of Human Monocyte-Derived Dendritic Cells (MDDC). Front Microbiol 2015; 6:1452. [PMID: 26733986 PMCID: PMC4686798 DOI: 10.3389/fmicb.2015.01452] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 12/04/2015] [Indexed: 01/08/2023] Open
Abstract
During human immunodeficiency virus (HIV) infection, alcohol has been known to induce inflammation while cannabinoids have been shown to have an anti-inflammatory role. For instance cannabinoids have been shown to reduce susceptibility to HIV-1 infection and attenuate HIV replication in macrophages. Recently, we demonstrated that alcohol induces cannabinoid receptors and regulates cytokine production by monocyte-derived dendritic cells (MDDC). However, the ability of alcohol and cannabinoids to alter MDDC function during HIV infection has not been clearly elucidated yet. In order to study the potential impact of alcohol and cannabinoids on differentiated MDDC infected with HIV, monocytes were cultured for 7 days with GM-CSF and IL-4, differentiated MDDC were infected with HIV-1Ba-L and treated with EtOH (0.1 and 0.2%), THC (5 and 10 μM), or JWH-015 (5 and 10 μM) for 4–7 days. HIV infection of MDDC was confirmed by p24 and Long Terminal Repeats (LTR) estimation. MDDC endocytosis assay and cytokine array profiles were measured to investigate the effects of HIV and substances of abuse on MDDC function. Our results show the HIV + EtOH treated MDDC had the highest levels of p24 production and expression when compared with the HIV positive controls and the cannabinoid treated cells. Although both cannabinoids, THC and JWH-015 had lower levels of p24 production and expression, the HIV + JWH-015 treated MDDC had the lowest levels of p24 when compared to the HIV + THC treated cells. In addition, MDDC endocytic function and cytokine production were also differentially altered after alcohol and cannabinoid treatments. Our results show a differential effect of alcohol and cannabinoids, which may provide insights into the divergent inflammatory role of alcohol and cannabinoids to modulate MDDC function in the context of HIV infection.
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Affiliation(s)
- Marisela Agudelo
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University Miami, FL, USA
| | - Gloria Figueroa
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University Miami, FL, USA
| | - Adriana Yndart
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University Miami, FL, USA
| | - Gianna Casteleiro
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University Miami, FL, USA
| | - Karla Muñoz
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University Miami, FL, USA
| | - Thangavel Samikkannu
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University Miami, FL, USA
| | - Venkata Atluri
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University Miami, FL, USA
| | - Madhavan P Nair
- Department of Immunology, Herbert Wertheim College of Medicine, Florida International University Miami, FL, USA
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13
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Roy U, Ding H, Pilakka-Kanthikeel S, Raymond AD, Atluri V, Yndart A, Kaftanovskaya EM, Batrakova E, Agudelo M, Nair M. Preparation and characterization of anti-HIV nanodrug targeted to microfold cell of gut-associated lymphoid tissue. Int J Nanomedicine 2015; 10:5819-35. [PMID: 26425084 PMCID: PMC4583111 DOI: 10.2147/ijn.s68348] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The human immunodeficiency virus 1 (HIV-1) still remains one of the leading life-threatening diseases in the world. The introduction of highly active antiretroviral therapy has significantly reduced disease morbidity and mortality. However, most of the drugs have variable penetrance into viral reservoir sites, including gut-associated lymphoid tissue (GALT). Being the largest lymphoid organ, GALT plays a key role in early HIV infection and host–pathogen interaction. Many different treatment options have been proposed to eradicate the virus from GALT. However, it becomes difficult to deliver traditional drugs to the GALT because of its complex physiology. In this regard, we developed a polymer-based Pluronic nanocarrier containing anti-HIV drug called efavirenz (EFV) targeting Microfold cells (M-cells) in the GALT. M-cells are specialized epithelial cells that are predominantly present in the GALT. In this work, we have exploited this paracellular transport property of M-cells for targeted delivery of Pluronic nanocarrier tagged EFV, bioconjugated with anti-M-cell-specific antibodies to the GALT (nanodrug). Preliminary characterization showed that the nanodrug (EFV-F12-COOH) is of 140 nm size with 0.3 polydispersion index, and the zeta potential of the particles was −19.38±2.2 mV. Further, drug dissolution study has shown a significantly improved sustained release over free drugs. Binding potential of nanodrug with M-cell was also confirmed with fluorescence microscopy and in vitro uptake and release studies. The anti-HIV activity of the nanodrug was also significantly higher compared to that of free drug. This novel formulation was able to show sustained release of EFV and inhibit the HIV-1 infection in the GALT compared to the free drug. The present study has potential for our in vivo targeted nanodrug delivery system by combining traditional enteric-coated capsule technique via oral administration.
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Affiliation(s)
- Upal Roy
- Center for Personalized NanoMedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Florida International University, Miami, FL, USA
| | - Hong Ding
- Center for Personalized NanoMedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Florida International University, Miami, FL, USA
| | - Sudheesh Pilakka-Kanthikeel
- Center for Personalized NanoMedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Florida International University, Miami, FL, USA
| | - Andrea D Raymond
- Center for Personalized NanoMedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Florida International University, Miami, FL, USA
| | - Venkata Atluri
- Center for Personalized NanoMedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Florida International University, Miami, FL, USA
| | - Adriana Yndart
- Center for Personalized NanoMedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Florida International University, Miami, FL, USA
| | - Elena M Kaftanovskaya
- Department of Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Elena Batrakova
- UNC Eshelman School of Pharmacy, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Marisela Agudelo
- Center for Personalized NanoMedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Florida International University, Miami, FL, USA
| | - Madhavan Nair
- Center for Personalized NanoMedicine, Institute of NeuroImmune Pharmacology, Department of Immunology, Florida International University, Miami, FL, USA
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14
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Yndart A, Kaushik A, Agudelo M, Raymond A, Atluri VS, Saxena SK, Nair M. Investigation of Neuropathogenesis in HIV-1 Clade B and C Infection Associated with IL-33 and ST2 Regulation. ACS Chem Neurosci 2015; 6:1600-12. [PMID: 26110635 DOI: 10.1021/acschemneuro.5b00156] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In present research work, for the first time, we demonstrate that neuropathogenesis in HIV-1 clade B and C infection is associated with IL-33 and ST2 dysregulation, that is, implication toward neuropathogenesis. It is known that neuropathogenesis of HIV infected individuals is clade dependent. Proinflammatory cytokines and related receptors play a significant role in the complex regulatory mechanisms of neuropathogenesis in HIV-1 infection. Among them, IL-33 is an inflammatory cytokine expressed in the central nervous system (CNS) and activates microglia cells and may affect neuroimmune inflammatory processes involved in HIV neuropathogenesis. Beside this, IL-33 receptor (ST2) plays a role in neuroinflammatory processes through the modulation of the biological action of IL-33. quantitative real time PCR (qRT-PCR), ELISA, Western blot (WB), and flow cytometry experiments were performed to elucidate the role of IL-33/ST2 in HIV neuropathogenesis in CNS cells. Apoptosis and mechanisms of IL-33 in neuronal cells were studied using caspase-3 assay and RT-PCR. Results of the studies suggest that the infection in CNS cells with HIV-1 clade B resulted in higher levels of IL-33/ST2L expression compared to HIV-1 clade C infection. Furthermore, higher concentrations of IL-33 were associated with a decrease in myocyte enhancer factor 2C (MEF2C) expression, a transcription factor that regulates synaptic function, and an increase in apoptosis, NOD2, and SLC11A1 in clade B infection. This led to neuroinflammation which dysregulates synaptic function and apoptosis. These parameters are common in neuroAIDS provoked by HIV infection.
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Affiliation(s)
- Adriana Yndart
- Center
of Personalized Nanomedicine, Institute of Neuropharmacology, Department
of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, United States
| | - Ajeet Kaushik
- Center
of Personalized Nanomedicine, Institute of Neuropharmacology, Department
of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, United States
| | - Marisela Agudelo
- Center
of Personalized Nanomedicine, Institute of Neuropharmacology, Department
of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, United States
| | - Andrea Raymond
- Center
of Personalized Nanomedicine, Institute of Neuropharmacology, Department
of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, United States
| | - Venkata S. Atluri
- Center
of Personalized Nanomedicine, Institute of Neuropharmacology, Department
of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, United States
| | - Shailendra K Saxena
- CSIR-Centre for Cellular and Molecular Biology (CCMB), Uppal Road, Hyderabad 500007 (TS), India
| | - Madhavan Nair
- Center
of Personalized Nanomedicine, Institute of Neuropharmacology, Department
of Immunology, Herbert Wertheim College of Medicine, Florida International University, Miami, Florida 33199, United States
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15
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Roy U, Atluri VSR, Agudelo M, Yndart A, Huang Z, Nair M. DJ1 expression downregulates in neuroblastoma cells (SK-N-MC) chronically exposed to HIV-1 and cocaine. Front Microbiol 2015; 6:749. [PMID: 26284039 PMCID: PMC4517050 DOI: 10.3389/fmicb.2015.00749] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 07/08/2015] [Indexed: 01/24/2023] Open
Abstract
Background: HIV-associated neurological disorder (HAND) has long been recognized as a consequence of human immunodeficiency virus (HIV) infection in the brain. The pathology of HAND gets more complicated with the recreational drug use such as cocaine. Recent studies have suggested multiple genetic influences involved in the pathology of addiction and HAND but only a fraction of the entire genetic risk has been investigated so far. In this regard, role of DJ1 protein (a gene linked to autosomal recessive early-onset Parkinson’s disease) in regulating dopamine (DA) transmission and reactive oxygen species (ROS) production in neuronal cells will be worth investigating in HIV-1 and cocaine exposed microenvironment. Being a very abundant protein in the brain, DJ1 could serve as a potential marker for early detection of HIV-1 and/or cocaine related neurological disorder. Methods:In vitro analysis was done to observe the effect of HIV-1 and/or cocaine on DJ1 protein expression in neuroblastoma cells (SK-N-MC). Gene and protein expression analysis of DJ1 was done on the HIV infected and/or cocaine treated SK-N-MC and compared to untreated cells using real time PCR, Western Blot and flow cytometry. Effect of DJ1 dysregulation on oxidative stress was analyzed by measuring ROS production in these cells. Results: Gene expression and protein analysis indicated that there was a significant decrease in DJ1 expression in SK-N-MC chronically exposed to HIV-1 and/or cocaine which is inversely proportional to ROS production. Conclusion: This is the first study to establish that DJ1 expression level in the neuronal cells significantly decreased in presence of HIV-1 and/or cocaine indicating oxidative stress level of DA neurons.
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Affiliation(s)
- Upal Roy
- Department of Immunology, Institute of NeuroImmune Pharmacology, Centre for Personalized Nanomedicine, Herbert Wertheim College of Medicine, Florida International University , Miami, FL, USA
| | - Venkata S R Atluri
- Department of Immunology, Institute of NeuroImmune Pharmacology, Centre for Personalized Nanomedicine, Herbert Wertheim College of Medicine, Florida International University , Miami, FL, USA
| | - Marisela Agudelo
- Department of Immunology, Institute of NeuroImmune Pharmacology, Centre for Personalized Nanomedicine, Herbert Wertheim College of Medicine, Florida International University , Miami, FL, USA
| | - Adriana Yndart
- Department of Immunology, Institute of NeuroImmune Pharmacology, Centre for Personalized Nanomedicine, Herbert Wertheim College of Medicine, Florida International University , Miami, FL, USA
| | - Zaohua Huang
- Department of Immunology, Institute of NeuroImmune Pharmacology, Centre for Personalized Nanomedicine, Herbert Wertheim College of Medicine, Florida International University , Miami, FL, USA
| | - Madhavan Nair
- Department of Immunology, Institute of NeuroImmune Pharmacology, Centre for Personalized Nanomedicine, Herbert Wertheim College of Medicine, Florida International University , Miami, FL, USA
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16
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Abstract
The role of platelets in the neurological diseases that underlie cognitive impairment has attracted increasing attention in recent years. Multiple pathways in platelets contribute to host defenses, as well as to CNS function. In the current study, we hypothesize that the Blood Brain Barrier (BBB) is disrupted when exposed to platelets from patients with triple Co-morbidity (hazardous alcohol users+ HIV+ thrombocytopenia), compared to those with dual, single or no morbidity (HIV only, alcohol only or healthy controls).
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Affiliation(s)
- Madhavan Nair
- Professor and Chair, Institute of Neuro-Immune Pharmacology, Department of Immunology, Florida International University, Miami, FL, USA
| | - Jose Mb Maria
- Professor, School of Integrated Health and Science, Department of Art and Science, Florida International University, Miami, FL, USA
| | - Marisela Agudelo
- Institute of Neuro-Immune Pharmacology, Department of Immunology, Florida International University, Miami, FL, USA
| | - Adriana Yndart
- Institute of Neuro-Immune Pharmacology, Department of Immunology, Florida International University, Miami, FL, USA
| | - Mayra E Vargas-Rivera
- School of Integrated Science and Humanity, College of Arts and Sciences, Florida International University, Miami, FL, USA
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17
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Kaushik A, Yndart A, Jayant RD, Sagar V, Atluri V, Bhansali S, Nair M. Electrochemical sensing method for point-of-care cortisol detection in human immunodeficiency virus-infected patients. Int J Nanomedicine 2015; 10:677-85. [PMID: 25632229 PMCID: PMC4304596 DOI: 10.2147/ijn.s75514] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
A novel electrochemical sensing method was devised for the first time to detect plasma cortisol, a potential psychological stress biomarker, in human immunodeficiency virus (HIV)-positive subjects. A miniaturized potentiostat (reconfigured LMP91000 chip) interfaced with a microfluidic manifold containing a cortisol immunosensor was employed to demonstrate electrochemical cortisol sensing. This fully integrated and optimized electrochemical sensing device exhibited a wide cortisol-detection range from 10 pg/mL to 500 ng/mL, a low detection limit of 10 pg/mL, and sensitivity of 5.8 μA (pg mL)−1, with a regression coefficient of 0.995. This cortisol-selective sensing system was employed to estimate plasma cortisol in ten samples from HIV patients. The electrochemical cortisol-sensing performance was validated using an enzyme-linked immunosorbent assay technique. The results obtained using both methodologies were comparable within 2%–5% variation. The information related to psychological stress of HIV patients can be correlated with disease-progression parameters to optimize diagnosis, therapeutic, and personalized health monitoring.
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Affiliation(s)
- Ajeet Kaushik
- Center of Personalized Nanomedicine, Institute of Neuroimmune Pharmacology, Department of Immun ology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Adriana Yndart
- Center of Personalized Nanomedicine, Institute of Neuroimmune Pharmacology, Department of Immun ology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Rahul Dev Jayant
- Center of Personalized Nanomedicine, Institute of Neuroimmune Pharmacology, Department of Immun ology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Vidya Sagar
- Center of Personalized Nanomedicine, Institute of Neuroimmune Pharmacology, Department of Immun ology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Venkata Atluri
- Center of Personalized Nanomedicine, Institute of Neuroimmune Pharmacology, Department of Immun ology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | - Shekhar Bhansali
- BioMEMS Microsystems Laboratory, Department of Electrical and Computer Engineering, Florida International University, Miami, FL, USA
| | - Madhavan Nair
- Center of Personalized Nanomedicine, Institute of Neuroimmune Pharmacology, Department of Immun ology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
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18
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Kurapati KRV, Samikkannu T, Atluri VSR, Kaftanovskaya E, Yndart A, Nair MPN. β-Amyloid1-42, HIV-1Ba-L (clade B) infection and drugs of abuse induced degeneration in human neuronal cells and protective effects of ashwagandha (Withania somnifera) and its constituent Withanolide A. PLoS One 2014; 9:e112818. [PMID: 25415340 PMCID: PMC4240587 DOI: 10.1371/journal.pone.0112818] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 10/15/2014] [Indexed: 11/25/2022] Open
Abstract
Alzheimer's disease (AD) is characterized by progressive dysfunction of memory and higher cognitive functions with abnormal accumulation of extracellular amyloid plaques and intracellular neurofibrillary tangles throughout cortical and limbic brain regions. Withania somnifera (WS) also known as ‘ashwagandha’ (ASH) is used widely in Ayurvedic medicine as a nerve tonic and memory enhancer. However, there is paucity of data on potential neuroprotective effects of ASH against β-Amyloid (1–42) (Aβ) induced neuropathogenesis. In the present study, we have tested the neuroprotective effects of Methanol: Chloroform (3:1) extract of ASH and its constituent Withanolide A (WA) against Aβ induced toxicity, HIV-1Ba-L (clade B) infection and the effects of drugs of abuse using a human neuronal SK-N-MC cell line. Aβ when tested individually, induced cytotoxic effects in SK-N-MC cells as shown by increased trypan blue stained cells. However, when ASH was added to Aβ treated cells the toxic effects were neutralized. This observation was supported by cellular localization of Aβ, MTT formazan exocytosis, and the levels of acetylcholinesterase activity, confirming the chemopreventive or protective effects of ASH against Aβ induced toxicity. Further, the levels of MAP2 were significantly increased in cells infected with HIV-1Ba-L (clade B) as well as in cells treated with Cocaine (COC) and Methamphetamine (METH) compared with control cells. In ASH treated cells the MAP2 levels were significantly less compared to controls. Similar results were observed in combination experiments. Also, WA, a purified constituent of ASH, showed same pattern using MTT assay as a parameter. These results suggests that neuroprotective properties of ASH observed in the present study may provide some explanation for the ethnopharmacological uses of ASH in traditional medicine for cognitive and other HIV associated neurodegenerative disorders and further ASH could be a potential novel drug to reduce the brain amyloid burden and/or improve the HIV-1 associated neurocognitive impairments
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Affiliation(s)
- Kesava Rao Venkata Kurapati
- Department of Immunology, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Modesto A. Maidique Campus, Miami, Florida, 33199, United States of America
| | - Thangavel Samikkannu
- Department of Immunology, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Modesto A. Maidique Campus, Miami, Florida, 33199, United States of America
| | - Venkata Subba Rao Atluri
- Department of Immunology, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Modesto A. Maidique Campus, Miami, Florida, 33199, United States of America
| | - Elena Kaftanovskaya
- Human and Molecular Genetics, Herbert Wertheim College of Medicine, Florida International University, Modesto A. Maidique Campus, Miami, Florida, 33199, United States of America
| | - Adriana Yndart
- Department of Immunology, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Modesto A. Maidique Campus, Miami, Florida, 33199, United States of America
| | - Madhavan P. N. Nair
- Department of Immunology, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Modesto A. Maidique Campus, Miami, Florida, 33199, United States of America
- * E-mail:
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Atluri VSR, Pilakka-Kanthikeel S, Samikkannu T, Sagar V, Kurapati KRV, Saxena SK, Yndart A, Raymond A, Ding H, Hernandez O, Nair MPN. Vorinostat positively regulates synaptic plasticity genes expression and spine density in HIV infected neurons: role of nicotine in progression of HIV-associated neurocognitive disorder. Mol Brain 2014; 7:37. [PMID: 24886748 PMCID: PMC4040511 DOI: 10.1186/1756-6606-7-37] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 04/28/2014] [Indexed: 11/24/2022] Open
Abstract
Background HIV-associated neurocognitive disorder (HAND) is characterized by development of cognitive, behavioral and motor abnormalities, and occurs in approximately 50% of HIV infected individuals. In the United States, the prevalence of cigarette smoking ranges from 35-70% in HIV-infected individuals compared to 20% in general population. Cognitive impairment in heavy cigarette smokers has been well reported. However, the synergistic effects of nicotine and HIV infection and the underlying mechanisms in the development of HAND are unknown. Results In this study, we explored the role of nicotine in the progression of HAND using SK-N-MC, a neuronal cell line. SK-N-MC cells were infected with HIV-1 in the presence or absence of nicotine for 7 days. We observed significant increase in HIV infectivity in SK-N-MC treated with nicotine compared to untreated HIV-infected neuronal cells. HIV and nicotine synergize to significantly dysregulate the expression of synaptic plasticity genes and spine density; with a concomitant increase of HDAC2 levels in SK-N-MC cells. In addition, inhibition of HDAC2 up-regulation with the use of vorinostat resulted in HIV latency breakdown and recovery of synaptic plasticity genes expression and spine density in nicotine/HIV alone and in co-treated SK-N-MC cells. Furthermore, increased eIF2 alpha phosphorylation, which negatively regulates eukaryotic translational process, was observed in HIV alone and in co-treatment with nicotine compared to untreated control and nicotine alone treated SK-N-MC cells. Conclusions These results suggest that nicotine and HIV synergize to negatively regulate the synaptic plasticity gene expression and spine density and this may contribute to the increased risk of HAND in HIV infected smokers. Apart from disrupting latency, vorinostat may be a useful therapeutic to inhibit the negative regulatory effects on synaptic plasticity in HIV infected nicotine abusers.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Madhavan P N Nair
- Department of Immunology, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, 11200 SW 8th Street, Miami, FL -33199, USA.
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Agudelo M, Khatavkar P, Yndart A, Yoo C, Rosenberg R, Devieux JG, Malow RM, Nair M. Alcohol abuse and HIV infection: role of DRD2. Curr HIV Res 2014; 12:234-42. [PMID: 25053368 PMCID: PMC4300295 DOI: 10.2174/1570162x12666140721115045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Revised: 04/25/2014] [Accepted: 04/28/2014] [Indexed: 11/22/2022]
Abstract
According to a survey from the HIV Cost and Services Utilization Study (HCSUS), approximately 53% of HIV-infected patients reported drinking alcohol and 8% were classified as heavy drinkers. The role of alcohol as a risk factor for HIV infection has been widely studied and recent research has found a significant association between heavy alcohol consumption and lower levels of CD4 T cells among HIV-infected alcoholics. Although there is evidence on the role of alcohol as a risk factor for HIV transmission and disease progression, there is a need for population studies to determine the genetic mechanisms that affect alcohol's role in HIV disease progression. One of the mechanisms of interest is the dopaminergic system. To date, the effects of dopamine on HIV neuroimmune pathogenesis are not well understood; however, dopaminergic neural degeneration due to HIV is known to occur by viral invasion into the brain via immune cells, and modulation of dopamine in the CNS may be a common mechanism by which different types of substances of abuse impact HIV disease progression. Although previous studies have shown an association of D(2) dopamine receptor (DRD2) polymorphisms with severity of alcohol dependence, the expression of this allele risk on HIV patients with alcohol dependence has not been systematically explored. In the current study, DRD2 Taq1A and C957T SNP genotyping analyses were performed in 165 HIV-infected alcohol abusers and the results were examined with immune status and CD4 counts.
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Affiliation(s)
| | | | | | | | | | | | | | - Madhavan Nair
- Department of Immunology, Institute of NeuroImmune Pharmacology, College of Medicine, AHC-I 308, Florida International University, 11200 SW 8th Street, Miami, FL 33199, USA.
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Agudelo M, Yndart A, Morrison M, Figueroa G, Muñoz K, Samikkannu T, Nair MP. Differential expression and functional role of cannabinoid genes in alcohol users. Drug Alcohol Depend 2013; 133:789-93. [PMID: 24060590 PMCID: PMC3818789 DOI: 10.1016/j.drugalcdep.2013.08.023] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 06/17/2013] [Accepted: 08/24/2013] [Indexed: 02/07/2023]
Abstract
BACKGROUND Genetic factors account for about fifty percent of the risk for alcoholism and alcohol dependence (AD) has been reported to be influenced by cannabinoid receptors (CBRs) and the endocannabinoid system (ECS). Previous studies have focused on cannabinoids and alcohol-related effects in the CNS; however, the role CBRs play on alcohol effects in the immune system has not been elucidated yet. Since alcohol can affect immune responses and have detrimental effects on immune cells such as dendritic cells (DCs), we hypothesize that alcohol can exert its effects on DCs by modulating changes in CBRs, which in turn can regulate important DC functions such as cytokine production. METHODS Therefore, we studied the expression of CNR1 and CNR2, and the novel cannabinoid G protein-coupled receptor (GPCR) 55 (GPR55) in human monocyte-derived dendritic cells (MDDCs) from alcohol users. CNR1, CNR2, and GPR55 genes were measured by qRT-PCR and protein by flow cytometry. MDDCs from alcohol users show significantly higher levels of CNR2 and GPR55 compared to MDDCs from non-users. These findings were further confirmed using MDDCs treated with alcohol. Inflammatory cytokines were measured in EtOH-treated and non-treated cells by antibody array. RESULTS Functional effects of CBRs on MDDCs were shown by CB2 and GPR55 siRNA transfection. Transfected EtOH-treated cells showed significantly higher levels of proinflammatory cytokine production as measured by IL-1β expression. Our results provide insights into alcohol mechanisms of DC regulation and show, for the first time, that alcohol is inducing CNR2 and GPR55 in human DCs.
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Saiyed ZM, Gandhi N, Agudelo M, Napuri J, Samikkannu T, Reddy PVB, Khatavkar P, Yndart A, Saxena SK, Nair MPN. HIV-1 Tat upregulates expression of histone deacetylase-2 (HDAC2) in human neurons: implication for HIV-associated neurocognitive disorder (HAND). Neurochem Int 2011; 58:656-64. [PMID: 21315782 DOI: 10.1016/j.neuint.2011.02.004] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2010] [Revised: 01/09/2011] [Accepted: 02/05/2011] [Indexed: 12/31/2022]
Abstract
Histone deacetylases (HDACs) play a pivotal role in epigenetic regulation of transcription and homeostasis of protein acetylation in histones and other proteins involved in chromatin remodeling. Histone hypoacetylation and transcriptional dysfunction have been shown to be associated with a variety of neurodegenerative diseases. More recently, neuron specific overexpression of HDAC2 has been shown to modulate synaptic plasticity and learning behavior in mice. However, the role of HDAC2 in development of HIV-associated neurocognitive disorders (HAND) is not reported. Herein we report that HIV-1 Tat protein upregulate HDAC2 expression in neuronal cells leading to transcriptional repression of genes involved in synaptic plasticity and neuronal function thereby contributing to the progression of HAND. Our results indicate upregulation of HDAC2 by Tat treatment in dose and time dependant manner by human neuroblastoma SK-N-MC cells and primary human neurons. Further, HDAC2 overexpression was associated with concomitant downregulation in CREB and CaMKIIa genes that are known to regulate neuronal activity. These observed effects were completely blocked by HDAC2 inhibition. These results for the first time suggest the possible role of HDAC2 in development of HAND. Therefore, use of HDAC2 specific inhibitor in combination with HAART may be of therapeutic value in treatment of neurocognitive disorders observed in HIV-1 infected individuals.
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Affiliation(s)
- Zainulabedin M Saiyed
- Department of Immunology, Institute of NeuroImmune Pharmacology, Herbert Wertheim College of Medicine, Florida International University, Miami, FL 33199, USA
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Bernardo L, Yndart A, Vázquez S, Morier L, Guzmán MG. Antibody responses to Asian and American genotypes of dengue 2 virus in immunized mice. Clin Diagn Lab Immunol 2005; 12:361-2. [PMID: 15699435 PMCID: PMC549307 DOI: 10.1128/cdli.12.2.361-362.2005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The possibility of a correlation between dengue virus genotype groups and disease severity is currently under discussion. The objective of this investigation was to identify any immunogenic difference between the American and Asian dengue 2 virus genotypes through the study of antibody development (virus-binding immunoglobulin G and neutralizing antibodies) in mice. Differences in the neutralization pattern between the strains studied were observed, suggesting the presence of slight antigenic variations among them. The lack of recognition of one of the Asian genotype strains was remarkable.
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Affiliation(s)
- Lidice Bernardo
- Virology Department, PAHO/WHO Collaborating Center for Viral Diseases, Pedro Kourí Tropical Medicine Institute, Autopista Novia del Mediodía, Km 6, Havana, Cuba
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