Role of Multifunctional Cytoskeletal Filaments in Coronaviridae Infections: Therapeutic Opportunities for COVID-19 in

Victor Norris1, Judit Ovádi2

  • 1Laboratory of Microbiology Signals and Microenvironment, University of Rouen, 76821 Mont Saint Aignan, France.

Cells
|August 7, 2021
PubMed

Insights

Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2), the virus causing COVID-19, presents treatment challenges. Understanding its interaction with host cells, particularly the cytoskeleton, is key to developing effective therapies against this novel coronavirus.

Area of Science:

  • Virology
  • Cell Biology
  • Immunology

Background:

  • Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) is a novel coronavirus causing the COVID-19 pandemic.
  • Limited data exist on effective treatments and prevention strategies for SARS-CoV-2 and its emerging mutants.
  • The rapid spread and severe health impacts of SARS-CoV-2 necessitate further research into its mechanisms of action.

Purpose of the Study:

  • To review the cytoskeleton-related physiological and pathological processes involved in SARS-CoV-2 infection.
  • To highlight the critical role of understanding host cell subversion mechanisms for drug target validation.
  • To contribute to the development of effective pharmacological and immunological treatments for COVID-19.

Main Methods:

  • Literature review focusing on SARS-CoV-2 and its interaction with the host cell cytoskeleton.
  • Analysis of existing data on viral pathogenesis and host-cell subversion.
  • Synthesis of information on current and developing therapeutic strategies.

Main Results:

  • Coronaviruses, including SARS-CoV-2, are intimately involved in cytoskeleton-related processes within host cells.
  • Understanding these interactions is crucial for identifying specific drug targets.
  • Despite challenges posed by new mutants, research is advancing understanding of pandemic responses and treatments.

Conclusions:

  • Elucidating the precise mechanisms by which SARS-CoV-2 subverts host cells is critical for developing targeted therapies.
  • Continued research into the virus-host cell interplay, especially concerning the cytoskeleton, will aid in combating COVID-19 and future viral threats.
  • Advancements in understanding pandemics are driving the development of diverse treatment modalities.

Related Concept Videos

Intracellular Movement of Viruses and Bacteria01:10

Intracellular Movement of Viruses and Bacteria

Intracellular bacteria and viruses often comprise a group of highly infectious pathogens that can cause several diseases. Bacterial pathogens include those belonging to the genus Rickettsia responsible for conditions such as rocky mountain spotted fever and the Mediterranean spotted fever; Chlamydia, a genus responsible for a sexually transmitted disease; Coxiella burnetii, an agent responsible for Q fever. Viral pathogens include vaccinia—a poxvirus, and herpes simplex virus—a...
3.0K
Adaptability of Cytoskeletal Filaments01:12

Adaptability of Cytoskeletal Filaments

The cytoskeleton is a complex dynamic structure performing varied functions based on cellular requirements. The adaptability of the individual filaments in the cytoskeleton determines their ability to perform various functions within the cell. It can undergo rapid reorganization during processes like cell division or remain stable for several hours as in the interphase. The adaptability of these filaments depends on stringent regulatory mechanisms. The microfilament and microtubules of the...
4.2K
Assembly of Cytoskeletal Filaments01:18

Assembly of Cytoskeletal Filaments

Cytoskeletal filaments are polymeric forms of smaller protein subunits. However, individual cytoskeletal filaments may easily disassemble or associate with other similar filaments to form rigid structures. Microfilaments, made of actin monomers, rely on actin-binding proteins to form bundles and create networks of individual actin filaments. Microtubules rely on microtubule-associated proteins (MAPs) to form sturdy cylindrical structures. However, the proteins involved in forming complex...
23.5K
Actin Filament Depolymerization01:19

Actin Filament Depolymerization

Actin filaments (F-actin) are composed of actin subunits. The dissociation of actin monomers can occur from either end of F-actin. The rate of dissociation is faster from the minus-end or the pointed end, where the actin subunits exist with a bound ADP, together known as ADP-actin. The depolymerization of F-actin is aided by proteins, including the actin-depolymerizing factor (ADF) and cofilin family of proteins, gelsolin, and glia maturation factor (GMF).
In F-actin, the ADF/cofilin proteins...
3.4K
Cytoskeletal Accessory Proteins01:13

Cytoskeletal Accessory Proteins

The cytoskeleton is an essential cell component that plays several structural and functional roles. However, the filaments that make up the cytoskeleton cannot function independently and depend on the accessory or ancillary proteins to effectively carry out their function. Accessory proteins associate with cytoskeletal filaments and their monomers, aiding filament formation and function. They also help in the cross-communication among cytoskeletal filaments. Cytoskeletal accessory proteins are...
3.4K
The Role of Actin and Myosin in Non-muscle Cells01:10

The Role of Actin and Myosin in Non-muscle Cells

Actin and myosin or actomyosin filaments also play a significant role in cells other than those involved in muscle contraction (which occurs within the sarcomere of muscle cells). The mechanism of non-muscle cell contractile bundles was first observed in Dictyostelium and Acanthamoeba. In non-muscle cells, two bundles are commonly found: stress fibers and actomyosin adherence belts. These contractile bundles are smaller and less organized than the ones found in muscle cells. They  are held...
3.8K