Targeting heat shock factor 1 as an antiviral strategy against dengue virus replication in vitro and in vivo

Tsung Ting Tsai, Chia Ling Chen, Cheng Chieh Tsai, Chiou Feng Lin

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Fever onset is correlated with viremia in dengue virus (DENV) patients. Heat shock factor 1 (HSF1), a heat stress response host transcription factor, plays a crucial role in regulating multiple cellular functions, as well as the onset of infectious diseases. This study evaluated the role of HSF1 in DENV replication as a means of regulating DENV infection in vitro and in vivo. DENV infection activated HSF1 in both Ca2+ and protein kinase A-dependent manners. Inhibiting HSF1 effectively reduced DENV replication, not only in THP-1 cells but also in primary human monocytes. Activated HSF1 contributed to DENV replication by upregulating autophagy-related protein (Atg) 7, as autophagy is crucial for virus replication. Heat stress also activated HSF1, which in turn facilitated DENV replication. Activated HSF1, the increased Atg7, and autophagic induction were founded in the DENV-infected brains and pharmacologically inhibiting HSF1 reduced autophagy, viral protein expression, neuropathy, and mortality. These results provide new insight into HSF1 as a novel host factor for DENV infection through its role in facilitating autophagy-regulated viral replication in the brains.

Original languageEnglish
Pages (from-to)44-53
Number of pages10
JournalAntiviral Research
Volume145
DOIs
Publication statusPublished - Sep 1 2017

Fingerprint

Dengue Virus
Virus Replication
Antiviral Agents
Shock
Hot Temperature
Autophagy
Virus Diseases
Heat-Shock Response
Viremia
Brain
Viral Proteins
Cyclic AMP-Dependent Protein Kinases
Communicable Diseases
Monocytes
Fever
Transcription Factors

Keywords

  • Autophagy
  • Dengue virus
  • HSF1
  • Infection
  • Neuropathy
  • Replication

ASJC Scopus subject areas

  • Pharmacology
  • Virology

Cite this

Targeting heat shock factor 1 as an antiviral strategy against dengue virus replication in vitro and in vivo. / Tsai, Tsung Ting; Chen, Chia Ling; Tsai, Cheng Chieh; Lin, Chiou Feng.

In: Antiviral Research, Vol. 145, 01.09.2017, p. 44-53.

Research output: Contribution to journalArticle

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