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Elumalai N, Hussain H, Sampath N, Shamaladevi N, Hajjar R, Druyan BZ, Rashed AB, Ramamoorthy R, Kenyon NS, Jayakumar AR, Paidas MJ. SPIKENET: An Evidence-Based Therapy for Long COVID. Viruses 2024; 16:838. [PMID: 38932130 PMCID: PMC11209161 DOI: 10.3390/v16060838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/10/2024] [Accepted: 05/14/2024] [Indexed: 06/28/2024] Open
Abstract
The COVID-19 pandemic has been one of the most impactful events in our lifetime, caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Multiple SARS-CoV-2 variants were reported globally, and a wide range of symptoms existed. Individuals who contract COVID-19 continue to suffer for a long time, known as long COVID or post-acute sequelae of COVID-19 (PASC). While COVID-19 vaccines were widely deployed, both unvaccinated and vaccinated individuals experienced long-term complications. To date, there are no treatments to eradicate long COVID. We recently conceived a new approach to treat COVID in which a 15-amino-acid synthetic peptide (SPIKENET, SPK) is targeted to the ACE2 receptor binding domain of SARS-CoV-2, which prevents the virus from attaching to the host. We also found that SPK precludes the binding of spike glycoproteins with the receptor carcinoembryonic antigen-related cell adhesion molecule 1 (CEACAM1) of a coronavirus, murine hepatitis virus-1 (MHV-1), and with all SARS-CoV-2 variants. Further, SPK reversed the development of severe inflammation, oxidative stress, tissue edema, and animal death post-MHV-1 infection in mice. SPK also protects against multiple organ damage in acute and long-term post-MHV-1 infection. Our findings collectively suggest a potential therapeutic benefit of SPK for treating COVID-19.
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Affiliation(s)
- Nila Elumalai
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (N.E.); (H.H.); (R.H.); (B.Z.D.); (A.B.R.); (R.R.)
| | - Hussain Hussain
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (N.E.); (H.H.); (R.H.); (B.Z.D.); (A.B.R.); (R.R.)
- Department of Internal Medicine, HCA Florida Kendall Hospital, Miami, FL 33175, USA
| | - Natarajan Sampath
- School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur 613401, Tamil Nadu, India;
| | | | - Rima Hajjar
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (N.E.); (H.H.); (R.H.); (B.Z.D.); (A.B.R.); (R.R.)
| | - Brian Zachary Druyan
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (N.E.); (H.H.); (R.H.); (B.Z.D.); (A.B.R.); (R.R.)
| | - Amirah B. Rashed
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (N.E.); (H.H.); (R.H.); (B.Z.D.); (A.B.R.); (R.R.)
| | - Rajalakshmi Ramamoorthy
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (N.E.); (H.H.); (R.H.); (B.Z.D.); (A.B.R.); (R.R.)
| | - Norma S. Kenyon
- Microbiology & Immunology and Biomedical Engineering, Diabetes Research Institute, University of Miami, Miami, FL 33136, USA;
| | - Arumugam R. Jayakumar
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (N.E.); (H.H.); (R.H.); (B.Z.D.); (A.B.R.); (R.R.)
| | - Michael J. Paidas
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA; (N.E.); (H.H.); (R.H.); (B.Z.D.); (A.B.R.); (R.R.)
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL 33136, USA
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Parkkinen I, Their A, Asghar MY, Sree S, Jokitalo E, Airavaara M. Pharmacological Regulation of Endoplasmic Reticulum Structure and Calcium Dynamics: Importance for Neurodegenerative Diseases. Pharmacol Rev 2023; 75:959-978. [PMID: 37127349 DOI: 10.1124/pharmrev.122.000701] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 03/27/2023] [Accepted: 04/04/2023] [Indexed: 05/03/2023] Open
Abstract
The endoplasmic reticulum (ER) is the largest organelle of the cell, composed of a continuous network of sheets and tubules, and is involved in protein, calcium (Ca2+), and lipid homeostasis. In neurons, the ER extends throughout the cell, both somal and axodendritic compartments, and is highly important for neuronal functions. A third of the proteome of a cell, secreted and membrane-bound proteins, are processed within the ER lumen and most of these proteins are vital for neuronal activity. The brain itself is high in lipid content, and many structural lipids are produced, in part, by the ER. Cholesterol and steroid synthesis are strictly regulated in the ER of the blood-brain barrier protected brain cells. The high Ca2+ level in the ER lumen and low cytosolic concentration is needed for Ca2+-based intracellular signaling, for synaptic signaling and Ca2+ waves, and for preparing proteins for correct folding in the presence of high Ca2+ concentrations to cope with the high concentrations of extracellular milieu. Particularly, ER Ca2+ is controlled in axodendritic areas for proper neurito- and synaptogenesis and synaptic plasticity and remodeling. In this review, we cover the physiologic functions of the neuronal ER and discuss it in context of common neurodegenerative diseases, focusing on pharmacological regulation of ER Ca2+ Furthermore, we postulate that heterogeneity of the ER, its protein folding capacity, and ensuring Ca2+ regulation are crucial factors for the aging and selective vulnerability of neurons in various neurodegenerative diseases. SIGNIFICANCE STATEMENT: Endoplasmic reticulum (ER) Ca2+ regulators are promising therapeutic targets for degenerative diseases for which efficacious drug therapies do not exist. The use of pharmacological probes targeting maintenance and restoration of ER Ca2+ can provide restoration of protein homeostasis (e.g., folding of complex plasma membrane signaling receptors) and slow down the degeneration process of neurons.
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Affiliation(s)
- Ilmari Parkkinen
- Neuroscience Center (I.P., A.T., M.A.), Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy (I.P., M.A.), Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Sciences (M.Y.A., S.S., E.J.), and Electron Microscopy Unit, Institute of Biotechnology, Helsinki Institute of Life Sciences (E.J.), University of Helsinki, Helsinki, Finland
| | - Anna Their
- Neuroscience Center (I.P., A.T., M.A.), Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy (I.P., M.A.), Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Sciences (M.Y.A., S.S., E.J.), and Electron Microscopy Unit, Institute of Biotechnology, Helsinki Institute of Life Sciences (E.J.), University of Helsinki, Helsinki, Finland
| | - Muhammad Yasir Asghar
- Neuroscience Center (I.P., A.T., M.A.), Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy (I.P., M.A.), Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Sciences (M.Y.A., S.S., E.J.), and Electron Microscopy Unit, Institute of Biotechnology, Helsinki Institute of Life Sciences (E.J.), University of Helsinki, Helsinki, Finland
| | - Sreesha Sree
- Neuroscience Center (I.P., A.T., M.A.), Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy (I.P., M.A.), Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Sciences (M.Y.A., S.S., E.J.), and Electron Microscopy Unit, Institute of Biotechnology, Helsinki Institute of Life Sciences (E.J.), University of Helsinki, Helsinki, Finland
| | - Eija Jokitalo
- Neuroscience Center (I.P., A.T., M.A.), Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy (I.P., M.A.), Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Sciences (M.Y.A., S.S., E.J.), and Electron Microscopy Unit, Institute of Biotechnology, Helsinki Institute of Life Sciences (E.J.), University of Helsinki, Helsinki, Finland
| | - Mikko Airavaara
- Neuroscience Center (I.P., A.T., M.A.), Division of Pharmacology and Pharmacotherapy, Faculty of Pharmacy (I.P., M.A.), Cell and Tissue Dynamics Research Program, Institute of Biotechnology, Helsinki Institute of Life Sciences (M.Y.A., S.S., E.J.), and Electron Microscopy Unit, Institute of Biotechnology, Helsinki Institute of Life Sciences (E.J.), University of Helsinki, Helsinki, Finland
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Septyaningtrias DE, Susilowati R. Neurological involvement of COVID-19: from neuroinvasion and neuroimmune crosstalk to long-term consequences. Rev Neurosci 2021; 32:427-442. [PMID: 33550780 DOI: 10.1515/revneuro-2020-0092] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 11/07/2020] [Indexed: 12/12/2022]
Abstract
As the coronavirus disease 2019 (COVID-19) pandemic continues to be a multidimensional threat to humanity, more evidence of neurological involvement associated with it has emerged. Neuroimmune interaction may prove to be important not only in the pathogenesis of neurological manifestations but also to prevent systemic hyperinflammation. In this review, we summarize reports of COVID-19 cases with neurological involvement, followed by discussion of possible routes of entry, immune responses against coronavirus infection in the central nervous system and mechanisms of nerve degeneration due to viral infection and immune responses. Possible mechanisms for neuroprotection and virus-associated neurological consequences are also discussed.
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Affiliation(s)
- Dian Eurike Septyaningtrias
- Department of Histology and Cell Biology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Jalan Farmako Sekip Utara, Yogyakarta55281, Indonesia
| | - Rina Susilowati
- Department of Histology and Cell Biology, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Jalan Farmako Sekip Utara, Yogyakarta55281, Indonesia
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Abstract
The coronavirus spike protein is a multifunctional molecular machine that mediates coronavirus entry into host cells. It first binds to a receptor on the host cell surface through its S1 subunit and then fuses viral and host membranes through its S2 subunit. Two domains in S1 from different coronaviruses recognize a variety of host receptors, leading to viral attachment. The spike protein exists in two structurally distinct conformations, prefusion and postfusion. The transition from prefusion to postfusion conformation of the spike protein must be triggered, leading to membrane fusion. This article reviews current knowledge about the structures and functions of coronavirus spike proteins, illustrating how the two S1 domains recognize different receptors and how the spike proteins are regulated to undergo conformational transitions. I further discuss the evolution of these two critical functions of coronavirus spike proteins, receptor recognition and membrane fusion, in the context of the corresponding functions from other viruses and host cells.
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Affiliation(s)
- Fang Li
- Department of Pharmacology, University of Minnesota Medical School, Minneapolis, Minnesota 55455;
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Dominguez SR, Shrivastava S, Berglund A, Qian Z, Góes LGB, Halpin RA, Fedorova N, Ransier A, Weston PA, Durigon EL, Jerez JA, Robinson CC, Town CD, Holmes KV. Isolation, propagation, genome analysis and epidemiology of HKU1 betacoronaviruses. J Gen Virol 2014; 95:836-848. [PMID: 24394697 DOI: 10.1099/vir.0.059832-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
From 1 January 2009 to 31 May 2013, 15 287 respiratory specimens submitted to the Clinical Virology Laboratory at the Children's Hospital Colorado were tested for human coronavirus RNA by reverse transcription-PCR. Human coronaviruses HKU1, OC43, 229E and NL63 co-circulated during each of the respiratory seasons but with significant year-to-year variability, and cumulatively accounted for 7.4-15.6 % of all samples tested during the months of peak activity. A total of 79 (0.5 % prevalence) specimens were positive for human betacoronavirus HKU1 RNA. Genotypes HKU1 A and B were both isolated from clinical specimens and propagated on primary human tracheal-bronchial epithelial cells cultured at the air-liquid interface and were neutralized in vitro by human intravenous immunoglobulin and by polyclonal rabbit antibodies to the spike glycoprotein of HKU1. Phylogenetic analysis of the deduced amino acid sequences of seven full-length genomes of Colorado HKU1 viruses and the spike glycoproteins from four additional HKU1 viruses from Colorado and three from Brazil demonstrated remarkable conservation of these sequences with genotypes circulating in Hong Kong and France. Within genotype A, all but one of the Colorado HKU1 sequences formed a unique subclade defined by three amino acid substitutions (W197F, F613Y and S752F) in the spike glycoprotein and exhibited a unique signature in the acidic tandem repeat in the N-terminal region of the nsp3 subdomain. Elucidating the function of and mechanisms responsible for the formation of these varying tandem repeats will increase our understanding of the replication process and pathogenicity of HKU1 and potentially of other coronaviruses.
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Affiliation(s)
- Samuel R Dominguez
- Departments of Microbiology, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 E 19th Ave, Room P18-9403B, Aurora, CO 80045, USA.,Departments of Pediatrics, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 E 19th Ave, Room P18-9403B, Aurora, CO 80045, USA
| | - Susmita Shrivastava
- Department of Pathology and Clinical Medicine, Children's Hospital Colorado, 13123 E 16th Ave, Aurora, CO 80045, USA
| | - Andrew Berglund
- Departments of Pediatrics, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 E 19th Ave, Room P18-9403B, Aurora, CO 80045, USA
| | - Zhaohui Qian
- Departments of Pediatrics, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 E 19th Ave, Room P18-9403B, Aurora, CO 80045, USA
| | - Luiz Gustavo Bentim Góes
- Interdisciplinary Graduate Program in Biotechnology, University of São Paulo, Av Prof. Lineu Prestes, 2415, ICB-III, Cidade Universitária, CEP: 05508-900, São Paulo, SP - Brazil.,J. Craig Venter Institute, 9704 Medical Center Drive, Rockville, MD 20850, USA
| | - Rebecca A Halpin
- Department of Pathology and Clinical Medicine, Children's Hospital Colorado, 13123 E 16th Ave, Aurora, CO 80045, USA
| | - Nadia Fedorova
- Department of Pathology and Clinical Medicine, Children's Hospital Colorado, 13123 E 16th Ave, Aurora, CO 80045, USA
| | - Amy Ransier
- Department of Pathology and Clinical Medicine, Children's Hospital Colorado, 13123 E 16th Ave, Aurora, CO 80045, USA
| | - Philip A Weston
- Departments of Pediatrics, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 E 19th Ave, Room P18-9403B, Aurora, CO 80045, USA
| | - Edison Luiz Durigon
- Interdisciplinary Graduate Program in Biotechnology, University of São Paulo, Av Prof. Lineu Prestes, 2415, ICB-III, Cidade Universitária, CEP: 05508-900, São Paulo, SP - Brazil.,J. Craig Venter Institute, 9704 Medical Center Drive, Rockville, MD 20850, USA
| | - José Antonio Jerez
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, Av Prof. Lineu Prestes 1374, ICB-II, Cidade Universitária, CEP: 05580-900, São Paulo, SP - Brazil.,J. Craig Venter Institute, 9704 Medical Center Drive, Rockville, MD 20850, USA
| | - Christine C Robinson
- Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, Cidade Universitária, CEP: 05508-270, Sao Paulo, SP - Brazil
| | - Christopher D Town
- Department of Pathology and Clinical Medicine, Children's Hospital Colorado, 13123 E 16th Ave, Aurora, CO 80045, USA
| | - Kathryn V Holmes
- Departments of Microbiology, University of Colorado School of Medicine, Anschutz Medical Campus, 12800 E 19th Ave, Room P18-9403B, Aurora, CO 80045, USA
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Heald-Sargent T, Gallagher T. Ready, set, fuse! The coronavirus spike protein and acquisition of fusion competence. Viruses 2012; 4:557-80. [PMID: 22590686 PMCID: PMC3347323 DOI: 10.3390/v4040557] [Citation(s) in RCA: 238] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Revised: 03/29/2012] [Accepted: 04/02/2012] [Indexed: 12/16/2022] Open
Abstract
Coronavirus-cell entry programs involve virus-cell membrane fusions mediated by viral spike (S) proteins. Coronavirus S proteins acquire membrane fusion competence by receptor interactions, proteolysis, and acidification in endosomes. This review describes our current understanding of the S proteins, their interactions with and their responses to these entry triggers. We focus on receptors and proteases in prompting entry and highlight the type II transmembrane serine proteases (TTSPs) known to activate several virus fusion proteins. These and other proteases are essential cofactors permitting coronavirus infection, conceivably being in proximity to cell-surface receptors and thus poised to split entering spike proteins into the fragments that refold to mediate membrane fusion. The review concludes by noting how understanding of coronavirus entry informs antiviral therapies.
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Affiliation(s)
| | - Tom Gallagher
- Department of Microbiology and Immunology, Loyola University Medical Center, 2160 South First Avenue, Maywood, IL 60153, USA;
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