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Printable Handouts
Navigable Slide Index
- Introduction
- Overview: introduction to hepatitis viruses and HCV induced disease
- Viral hepatitis
- Hepatitis viruses: numerous and genetically distinct
- Hepatitis viruses: diverse clinical features
- Hepatitis C Virus (HCV): a global epidemic
- Clinical consequences of hepatitis C
- Overview: the timeline of HCV discovery to cure
- Non-A, non-B hepatitis defined (NANBH)
- Animal infections
- Searching for NANBH/TFA
- Most of the HCV genome cloned
- Member of Flaviviridae family
- HCV genome (1)
- HCV genome (2)
- HCV proteins
- HCV structural proteins
- HCV non-structural (NS) proteins
- Flaviviridae (HCV) life cycle
- Launched infection from a cDNA
- HCV cell culture systems
- Subgenomic replicons
- No virus in culture
- No virus in culture - PI4Kα lipid kinase
- New therapies
- Treatment of HCV
- Overview: HCV persistence and vaccine potential
- How does HCV persist in vivo?
- Focal nature of HCV infection (1)
- Focal nature of HCV infection (2)
- HCV infection and viral spread
- HCV infection and adaptative immune response
- HCV infection and innate immune response
- HCV vaccine potential
- Overview: mechanisms that restrict HCV tropism
- What controls the HCV's restricted tropism?
- HCV life cycle and tropism
- HCV cell entry
- Four cell surface proteins are required for HCV cell entry
- HCV cell entry tropisms determinants
- HCV RNA replication
- microRNAs
- miR-122 promotes HCV RNA replication
- Possible mechanism?
- Sequestering miR-122 blocks replication
- Therapies targeting miR-122
- Lipoproteins and HCV
- Lipoproteins
- Lipoproteins and HCV questions
- HCV life cycle and tropism
- Viruses (everything) is evolving (1)
- Viruses (everything) is evolving (2)
- Summary
- References (1)
- References (2)
Topics Covered
- Basic molecular virology of the hepatitis C virus (HCV)
- Introduction to hepatitis viruses and HCV induced disease
- The timeline of HCV discovery to cure
- HCV structure
- Treatment of HCV
- HCV persistence and vaccine potential
- Mechanisms that restrict HCV tropism to human livers
Links
Series:
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Talk Citation
Evans, M. (2020, August 31). Hepatitis C virus: discovery, cure and protection [Video file]. In The Biomedical & Life Sciences Collection, Henry Stewart Talks. Retrieved December 21, 2024, from https://doi.org/10.69645/WTOK6967.Export Citation (RIS)
Publication History
Financial Disclosures
- There are no commercial/financial matters to disclose.
A selection of talks on Infectious Diseases
Transcript
Please wait while the transcript is being prepared...
0:00
Good morning. My name is Matthew Evans.
I'm an Associate Professor in
the Department of Microbiology at the Icahn School of Medicine in New York.
Today I will be talking about the hepatitis C virus,
how this virus was discovered,
its potential to be cured and protected,
and many basics about the virus.
0:19
This talk will include an introduction to
hepatitis viruses in general and HCV and its induced disease.
The timeline of the HCV cure.
How HCV is able to establish persistent infections,
and whether a vaccine would be capable of protecting individuals from infection.
Finally, mechanisms that restrict HCV tropism to particular cell types.
0:45
Before talking specifically about the hepatitis C virus,
it's worth describing what hepatitis is in general and how viruses induce this disease.
Hepatitis is simply the inflammation of the liver. It is often caused by a virus,
but it can be caused by anything that can damage the liver.
The symptoms include jaundice,
which causes a typical yellowing of the skin and eyes, fatigue,
and appetite loss and many other symptoms that are not always
specific for hepatitis, but can definitely be related to these diseases.
1:20
It turns out that many viruses induce hepatitis.
All of these viruses are called hepatitis, and then a letter, virus,
but they are only related to each other by their ability to induce liver disease.
Hepatitis A through E viruses are known by other names as well,
like infectious hepatitis for hepatitis A.
These are actually completely unrelated types of viruses, where hepatitis A virus is
a picornavirus, and every other hepatitis virus on
this list is actually its own distinct family of viruses.
Again, there are similarities,
and why they're all called hepatitis viruses is they all cause this disease.
They all predominantly infect the liver,
which means they have a liver tropism and they're mostly
infecting the major cell type in the liver, which are hepatocytes.
They often are associated with exclusively liver disease.