Dysregulation of claudin-5 in HIV-induced interstitial pneumonitis and lung vascular injury: Protective role of peroxisome proliferator-activated receptor-γ

Hong Li, Sangya Singh, Raghava Potula, Yuri Persidsky, Georgette D. Kanmogne

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Rationale: HIV-1-induced interstitial pneumonitis (IP) is a serious complication of HIV-1 infection, characterized by inflammation and cellular infiltration in lungs, often leading to respiratory failure and death. The barrier function of the pulmonary endothelium is caused in part by tight junction (TJ) proteins, such as claudin-5. Peroxisome proliferator-activated receptor (PPAR)-γ is expressed in lung tissues and regulates inflammation. We hypothesize that HIV-1 induces vascular lung injury, and HIV-1-mediated damage of the pulmonary endothelium and IP is associated with dysregulation of PPAR-γ. Objectives: Investigate the effects of HIV-1 infection on the pulmonary microvasculature and the modulatory effects of the PPAR-γ ligands. Methods: Using human lung tissues, we demonstrated downregulation of claudin-5 (marker of pulmonary barrier integrity), down-regulation of PPAR-γ transcription, and expression in lung tissues of HIV-1-infected humans with IP. Measurements and Main Results: Human lung microvascular endothelial cells expressed the TJ proteins claudin-5, ZO-1, and ZO-2;HIV-1 decreased TJ proteins expression and induced nuclear factor-κB promoter activity, which was reversed by PPAR-γ agonist. Using two murine HIV/AIDS models, we demonstrated decreased claudin-5 expression andincreasedmacrophage infiltration in the lungs of HIV-1-infected animals. Activation of PPAR-γ prevented HIV-1-induced claudin-5 down-regulation and significantly reduced viremia and pulmonary macrophage infiltration. Conclusions: HIV-induced IP is associated with injury to the lung vascular endothelium, with decreased TJ and PPAR-γ expression, and increased pulmonary macrophage infiltration. PPAR-γ ligands abrogated these effects. Thus, regulation of PPAR-γ can be a therapeutic approach against HIV-1-induced vascular damage and IP in infected humans. Removal of Expression of Concern: Issues leading to the previous expression of concern for this article have been resolved after further revisions and editorial review. No further concerns exist.

Original languageEnglish (US)
Pages (from-to)85-97
Number of pages13
JournalAmerican Journal of Respiratory and Critical Care Medicine
Volume190
Issue number1
DOIs
StatePublished - Jul 1 2014

Fingerprint

Claudin-5
Peroxisome Proliferator-Activated Receptors
Vascular System Injuries
Interstitial Lung Diseases
Lung Injury
HIV-1
HIV
Lung
Tight Junction Proteins
Down-Regulation
Alveolar Macrophages
HIV Infections
Endothelium
Murine Acquired Immunodeficiency Syndrome
Ligands
Inflammation
Tight Junctions
Viremia
Vascular Endothelium
Microvessels

Keywords

  • HIV/AIDS
  • Macrophages
  • PBMC
  • Pulmonary endothelium
  • Tight junction proteins

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Critical Care and Intensive Care Medicine

Cite this

@article{194639b5048640f494bb2de9ada2948c,
title = "Dysregulation of claudin-5 in HIV-induced interstitial pneumonitis and lung vascular injury: Protective role of peroxisome proliferator-activated receptor-γ",
abstract = "Rationale: HIV-1-induced interstitial pneumonitis (IP) is a serious complication of HIV-1 infection, characterized by inflammation and cellular infiltration in lungs, often leading to respiratory failure and death. The barrier function of the pulmonary endothelium is caused in part by tight junction (TJ) proteins, such as claudin-5. Peroxisome proliferator-activated receptor (PPAR)-γ is expressed in lung tissues and regulates inflammation. We hypothesize that HIV-1 induces vascular lung injury, and HIV-1-mediated damage of the pulmonary endothelium and IP is associated with dysregulation of PPAR-γ. Objectives: Investigate the effects of HIV-1 infection on the pulmonary microvasculature and the modulatory effects of the PPAR-γ ligands. Methods: Using human lung tissues, we demonstrated downregulation of claudin-5 (marker of pulmonary barrier integrity), down-regulation of PPAR-γ transcription, and expression in lung tissues of HIV-1-infected humans with IP. Measurements and Main Results: Human lung microvascular endothelial cells expressed the TJ proteins claudin-5, ZO-1, and ZO-2;HIV-1 decreased TJ proteins expression and induced nuclear factor-κB promoter activity, which was reversed by PPAR-γ agonist. Using two murine HIV/AIDS models, we demonstrated decreased claudin-5 expression andincreasedmacrophage infiltration in the lungs of HIV-1-infected animals. Activation of PPAR-γ prevented HIV-1-induced claudin-5 down-regulation and significantly reduced viremia and pulmonary macrophage infiltration. Conclusions: HIV-induced IP is associated with injury to the lung vascular endothelium, with decreased TJ and PPAR-γ expression, and increased pulmonary macrophage infiltration. PPAR-γ ligands abrogated these effects. Thus, regulation of PPAR-γ can be a therapeutic approach against HIV-1-induced vascular damage and IP in infected humans. Removal of Expression of Concern: Issues leading to the previous expression of concern for this article have been resolved after further revisions and editorial review. No further concerns exist.",
keywords = "HIV/AIDS, Macrophages, PBMC, Pulmonary endothelium, Tight junction proteins",
author = "Hong Li and Sangya Singh and Raghava Potula and Yuri Persidsky and Kanmogne, {Georgette D.}",
year = "2014",
month = "7",
day = "1",
doi = "10.1164/rccm.201106-1151OC",
language = "English (US)",
volume = "190",
pages = "85--97",
journal = "American Journal of Respiratory and Critical Care Medicine",
issn = "1073-449X",
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TY - JOUR

T1 - Dysregulation of claudin-5 in HIV-induced interstitial pneumonitis and lung vascular injury

T2 - Protective role of peroxisome proliferator-activated receptor-γ

AU - Li, Hong

AU - Singh, Sangya

AU - Potula, Raghava

AU - Persidsky, Yuri

AU - Kanmogne, Georgette D.

PY - 2014/7/1

Y1 - 2014/7/1

N2 - Rationale: HIV-1-induced interstitial pneumonitis (IP) is a serious complication of HIV-1 infection, characterized by inflammation and cellular infiltration in lungs, often leading to respiratory failure and death. The barrier function of the pulmonary endothelium is caused in part by tight junction (TJ) proteins, such as claudin-5. Peroxisome proliferator-activated receptor (PPAR)-γ is expressed in lung tissues and regulates inflammation. We hypothesize that HIV-1 induces vascular lung injury, and HIV-1-mediated damage of the pulmonary endothelium and IP is associated with dysregulation of PPAR-γ. Objectives: Investigate the effects of HIV-1 infection on the pulmonary microvasculature and the modulatory effects of the PPAR-γ ligands. Methods: Using human lung tissues, we demonstrated downregulation of claudin-5 (marker of pulmonary barrier integrity), down-regulation of PPAR-γ transcription, and expression in lung tissues of HIV-1-infected humans with IP. Measurements and Main Results: Human lung microvascular endothelial cells expressed the TJ proteins claudin-5, ZO-1, and ZO-2;HIV-1 decreased TJ proteins expression and induced nuclear factor-κB promoter activity, which was reversed by PPAR-γ agonist. Using two murine HIV/AIDS models, we demonstrated decreased claudin-5 expression andincreasedmacrophage infiltration in the lungs of HIV-1-infected animals. Activation of PPAR-γ prevented HIV-1-induced claudin-5 down-regulation and significantly reduced viremia and pulmonary macrophage infiltration. Conclusions: HIV-induced IP is associated with injury to the lung vascular endothelium, with decreased TJ and PPAR-γ expression, and increased pulmonary macrophage infiltration. PPAR-γ ligands abrogated these effects. Thus, regulation of PPAR-γ can be a therapeutic approach against HIV-1-induced vascular damage and IP in infected humans. Removal of Expression of Concern: Issues leading to the previous expression of concern for this article have been resolved after further revisions and editorial review. No further concerns exist.

AB - Rationale: HIV-1-induced interstitial pneumonitis (IP) is a serious complication of HIV-1 infection, characterized by inflammation and cellular infiltration in lungs, often leading to respiratory failure and death. The barrier function of the pulmonary endothelium is caused in part by tight junction (TJ) proteins, such as claudin-5. Peroxisome proliferator-activated receptor (PPAR)-γ is expressed in lung tissues and regulates inflammation. We hypothesize that HIV-1 induces vascular lung injury, and HIV-1-mediated damage of the pulmonary endothelium and IP is associated with dysregulation of PPAR-γ. Objectives: Investigate the effects of HIV-1 infection on the pulmonary microvasculature and the modulatory effects of the PPAR-γ ligands. Methods: Using human lung tissues, we demonstrated downregulation of claudin-5 (marker of pulmonary barrier integrity), down-regulation of PPAR-γ transcription, and expression in lung tissues of HIV-1-infected humans with IP. Measurements and Main Results: Human lung microvascular endothelial cells expressed the TJ proteins claudin-5, ZO-1, and ZO-2;HIV-1 decreased TJ proteins expression and induced nuclear factor-κB promoter activity, which was reversed by PPAR-γ agonist. Using two murine HIV/AIDS models, we demonstrated decreased claudin-5 expression andincreasedmacrophage infiltration in the lungs of HIV-1-infected animals. Activation of PPAR-γ prevented HIV-1-induced claudin-5 down-regulation and significantly reduced viremia and pulmonary macrophage infiltration. Conclusions: HIV-induced IP is associated with injury to the lung vascular endothelium, with decreased TJ and PPAR-γ expression, and increased pulmonary macrophage infiltration. PPAR-γ ligands abrogated these effects. Thus, regulation of PPAR-γ can be a therapeutic approach against HIV-1-induced vascular damage and IP in infected humans. Removal of Expression of Concern: Issues leading to the previous expression of concern for this article have been resolved after further revisions and editorial review. No further concerns exist.

KW - HIV/AIDS

KW - Macrophages

KW - PBMC

KW - Pulmonary endothelium

KW - Tight junction proteins

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