Acute Alcohol Inhibits TNF-α Processing in Human Monocytes by Inhibiting TNF/TNF-α-Converting Enzyme Interactions in the Cell Membrane1 (original) (raw)
Journal Article
Gene Therapy Program, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Alcohol Research Center, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
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Gene Therapy Program, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Search for other works by this author on:
Gene Therapy Program, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Alcohol Research Center, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Search for other works by this author on:
Gene Therapy Program, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Alcohol Research Center, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Search for other works by this author on:
Gene Therapy Program, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Alcohol Research Center, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Search for other works by this author on:
Gene Therapy Program, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Search for other works by this author on:
Gene Therapy Program, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Search for other works by this author on:
Gene Therapy Program, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Alcohol Research Center, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Search for other works by this author on:
Gene Therapy Program, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Search for other works by this author on:
Gene Therapy Program, Louisiana State University Health Sciences Center
,
New Orleans, LA 70112
Search for other works by this author on:
Received:
24 October 2002
Accepted:
15 January 2003
Cite
Xue-Jun Zhao, Luis Marrero, Kejing Song, Peter Oliver, So Yeon Chin, Harriet Simon, Jill R Schurr, Zili Zhang, Deepu Thoppil, Sharon Lee, Steve Nelson, Jay K Kolls, Acute Alcohol Inhibits TNF-α Processing in Human Monocytes by Inhibiting TNF/TNF-α-Converting Enzyme Interactions in the Cell Membrane, The Journal of Immunology, Volume 170, Issue 6, March 2003, Pages 2923–2931, https://doi.org/10.4049/jimmunol.170.6.2923
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Abstract
Alcohol abuse has long been known to adversely affect innate immune responses and predispose to infections. One cellular mechanism responsible for this effect is alcohol-induced suppression of TNF-α by mononuclear phagocytes. We undertook experiments to better understand the cellular mechanisms by which alcohol dose-dependently suppresses TNF elaboration by human monocytes. Here we show in human primary monocytes and cell lines that alcohol suppresses LPS-induced TNF secretion post-transcriptionally by inhibiting cellular processing by TNF-α-converting enzyme (TACE). Using fluorescent resonance energy transfer microscopy, physiological relevant levels of alcohol resulted in a reversible dose-dependent decrease in fluorescent resonance energy transfer efficiency between TNF and TACE. These data demonstrate that alcohol inhibits interactions between TNF and its converting enzyme, TACE, possibly by affecting membrane fluidity. These data in part explain the cellular mechanisms by which alcohol impairs monocyte function and may identify immunotherapeutic targets aimed at restoring immune function in this at-risk patient population.
Copyright © 2003 by The American Association of Immunologists
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