A common human TLR1 polymorphism regulates the innate immune response to lipopeptides.

A common human TLR1 polymorphism regulates the innate immune response to lipopeptides. Research Abstract Details 

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A common human TLR1 polymorphism regulates the innate immune response to lipopeptides. Abstract Text:

Ralf R Schumann,Richard I Tapping,

Toll-like receptors (TLR) are critical mediators of the immune response to pathogens and human polymorphisms in this gene family regulate inflammatory pathways and are associated with susceptibility to infection. Lipopeptides are present in a wide variety of microbes and stimulate immune responses through TLR1/2 or TLR2/6 heterodimers. It is not currently known whether polymorphisms in TLR1 regulate the innate immune response. We stimulated human whole blood with triacylated lipopeptide, a ligand for TLR1/2 heterodimers, and found substantial inter-individual variation in the immune response. We sequenced the coding region of TLR1 and found a non-synonymous polymorphism, I602S (base pair T1805G), that regulated signalling. In comparison to TLR1_602S, the 602I variant mediated substantially greater basal and lipopeptide-induced NF-kappaB signalling in transfected HEK293 cells. These signalling differences among TLR1 variants were also found with stimulation by extracts of Mycobacterium tuberculosis. Furthermore, individuals with the 602II genotype produced substantially more IL-6 than those with the 602SS variant in a lipopeptide-stimulated whole-blood cytokine assay. Together, these observations demonstrate that variation in the inflammatory response to bacterial lipopeptides is regulated by a common TLR1 transmembrane domain polymorphism that could potentially impact the innate immune response and clinical susceptibility to a wide spectrum of pathogens.

A common human TLR1 polymorphism regulates the innate immune response to lipopeptides. Publishing Authors By Initials

RR Schumann,RI Tapping,

For similar investigative techniques: genetic techniques: gene transfer techniques: transfection research abstracts see: investigative techniques: genetic techniques: gene transfer techniques: transfection research

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A common human TLR1 polymorphism regulates the innate immune response to lipopeptides. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: European journal of immunology

VOLUME: 37

Page Numbers: 2280-9

Journal Abbreviation: Eur. J. Immunol.

ISSN: 0014-2980

DAY: 3

MONTH: Aug

YEAR: 2007

A common human TLR1 polymorphism regulates the innate immune response to lipopeptides. Information

Number of References:

LANGUAGE: eng

NlmUniqueID: 1273201

A common human TLR1 polymorphism regulates the innate immune response to lipopeptides. Keywords Mesh Terms:

KEYWORDS: Transfection

MESH TERMS: genetics

Chemical & Substance for Abstract: A common human TLR1 polymorphism regulates the innate immune response to lipopeptides. Information

Substance Name: Toll-Like Receptor 1

Registry Number: 0

Grant and Affiliation Information for A common human TLR1 polymorphism regulates the innate immune response to lipopeptides.

AFFILIATION: Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA, and Oxford University Clinical Research Unit, Hospital for Tropical Diseases, Ho Chi Minh City, Vietnam. thawn@u.washington.edu

Country: Germany

AGENCY: United Kingdom Wellcome T

GRANT: HHSN266200400091C

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MEDLINETA: Eur J Immunol

REFSOURCE: Eur J Immunol. 2007 Aug;37(8):2059-62

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