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The effect of amantadine on an ion channel protein from Chikungunya virus
- Source :
- PLoS Neglected Tropical Diseases, Vol 13, Iss 7, p e0007548 (2019), PLoS Neglected Tropical Diseases
- Publication Year :
- 2019
- Publisher :
- Public Library of Science (PLoS), 2019.
-
Abstract
- Viroporins like influenza A virus M2, hepatitis C virus p7, HIV-1 Vpu and picornavirus 2B associate with host membranes, and create hydrophilic corridors, which are critical for viral entry, replication and egress. The 6K proteins from alphaviruses are conjectured to be viroporins, essential during egress of progeny viruses from host membranes, although the analogue in Chikungunya Virus (CHIKV) remains relatively uncharacterized. Using a combination of electrophysiology, confocal and electron microscopy, and molecular dynamics simulations we show for the first time that CHIKV 6K is an ion channel forming protein that primarily associates with endoplasmic reticulum (ER) membranes. The ion channel activity of 6K can be inhibited by amantadine, an antiviral developed against the M2 protein of Influenza A virus; and CHIKV infection of cultured cells can be effectively inhibited in presence of this drug. Our study provides crucial mechanistic insights into the functionality of 6K during CHIKV-host interaction and suggests that 6K is a potential therapeutic drug target, with amantadine and its derivatives being strong candidates for further development.<br />Author summary Chikungunya fever is a severe crippling illness caused by the arthropod-borne virus CHIKV. Originally from the African subcontinent, the virus has now spread worldwide and is responsible for substantial morbidity and economic loss. The existing treatment against CHIKV is primarily symptomatic, and it is imperative that specific therapeutics be devised. The present study provides detailed insight into the functionality of 6K, an ion channel forming protein of CHIKV. Amantadine, a known antiviral against influenza virus, also inhibits CHIKV replication in cell culture and drastically alters the morphology of virus particles. This work highlights striking parallels among functionalities of virus-encoded membrane-interacting proteins, which may be exploited for developing broad-spectrum antivirals.
- Subjects :
- 0301 basic medicine
RNA viruses
Viral Diseases
Picornavirus
Physiology
viruses
Cell Membranes
RC955-962
medicine.disease_cause
Pathology and Laboratory Medicine
Endoplasmic Reticulum
Virus Replication
Biochemistry
Ion Channels
0302 clinical medicine
Arctic medicine. Tropical medicine
Chlorocebus aethiops
Influenza A virus
Medicine and Health Sciences
Chikungunya
Membrane Electrophysiology
Chikungunya Virus
Secretory Pathway
Microscopy, Confocal
biology
Chemistry
Physics
virus diseases
Electrophysiology
Infectious Diseases
Bioassays and Physiological Analysis
Medical Microbiology
Cell Processes
Viral Pathogens
Viruses
Physical Sciences
Pathogens
Cellular Structures and Organelles
Public aspects of medicine
RA1-1270
Research Article
Neglected Tropical Diseases
Alphaviruses
030231 tropical medicine
Biophysics
Ion Channel Protein
Neurophysiology
Molecular Dynamics Simulation
Research and Analysis Methods
Microbiology
Membrane Potential
Antiviral Agents
Virus
Togaviruses
03 medical and health sciences
Viral Proteins
Viral entry
medicine
Amantadine
Animals
Humans
Vesicles
Microbial Pathogens
Vero Cells
Ion channel
Biology and life sciences
Host Microbial Interactions
Endoplasmic reticulum
Electrophysiological Techniques
Public Health, Environmental and Occupational Health
Organisms
Chikungunya Infection
Proteins
Cell Biology
biology.organism_classification
Tropical Diseases
Virology
030104 developmental biology
HEK293 Cells
Liposomes
Neuroscience
Subjects
Details
- Language :
- English
- ISSN :
- 19352735 and 19352727
- Volume :
- 13
- Issue :
- 7
- Database :
- OpenAIRE
- Journal :
- PLoS Neglected Tropical Diseases
- Accession number :
- edsair.doi.dedup.....0fa7c0ef4df02d1c5522e3d5b6ef20f2