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siRNA Electroporation to Modulate Autophagy in Herpes Simplex Virus Type 1-Infected Monocyte-Derived Dendritic Cells

siRNA Electroporation to Modulate Autophagy in Herpes Simplex Virus Type 1-Infected Monocyte-Derived Dendritic Cells

Published on: October 28, 2019

Autophagy Negatively Regulates Transmissible Gastroenteritis Virus Replication.

Longjun Guo¹, Haidong Yu^1,2, Weihong Gu¹

¹State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin, China.

Scientific Reports

|April 1, 2016

Summary

Autophagy, a cellular defense mechanism, is activated during transmissible gastroenteritis virus (TGEV) infection. This process ultimately inhibits TGEV replication, suggesting a potential therapeutic target.

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Area of Science:

Cell Biology
Virology
Immunology

Background:

Autophagy plays a role in innate immunity against viral infections.
The specific role of autophagy in transmissible gastroenteritis virus (TGEV) replication remains largely unknown.

Purpose of the Study:

To investigate the regulatory role of autophagy in TGEV replication.
To determine whether autophagy influences TGEV replication and understand the underlying mechanisms.

Main Methods:

Monitoring autophagosome formation and LC3-II levels in TGEV-infected cells.
Pharmacological inhibition and activation of autophagy using wortmannin, LY294002, and rapamycin.
Utilizing siRNA to deplete autophagy-related proteins and gene p300.

Main Results:

TGEV infection increased autophagosome-like vesicles and LC3-II, indicating autophagy activation and flux.
Inhibiting autophagy enhanced TGEV replication, while activating autophagy reduced it.
Depleting autophagy-related proteins or p300 modulated TGEV replication consistent with autophagy's role.

Conclusions:

TGEV infection triggers a complete autophagic response.
Autophagy acts as an antiviral mechanism that inhibits TGEV replication.