Toll-like receptors mediate proliferation and survival of multiple myeloma cells

Toll-like receptors mediate proliferation and survival of multiple myeloma cells

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ABSTRACT Multiple myeloma (MM) is an incurable B-cell malignancy characterized by accumulation of malignant plasma cells in bone marrow (BM) and recurrent or persistent infections. Toll-like


receptors (TLRs) are essential in the host defense against infections and today 10 human TLRs (TLR1-TLR10) and one TLR-homolog (RP105) have been characterized. B cells express several TLRs


(mainly TLR1, 6, 7, 9, 10 and RP105) and TLR-initiated responses in B cells include proliferation, anti-apoptosis effect and plasma cell (PC) differentiation. The present study was designed


to analyze the role of TLRs in MM. We show that frequent expressions of TLRs were detected in cell lines from MM patients (minimum six TLRs in each). In comparison, only few TLRs (mainly


TLR1 and or RP105) were found expressed in PCs from BM of healthy donors. In addition, TLR-specific ligands induce increased proliferation and survival of the MM cell lines, partially due to


an autocrine interleukin-6 production. Importantly, we demonstrate that also PC from MM patients proliferates in response to TLR-specific ligands. In conclusion, TLR-ligands may contribute


to increased growth and survival of MM cells in MM patients. Access through your institution Buy or subscribe This is a preview of subscription content, access via your institution ACCESS


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institutional subscriptions * Read our FAQs * Contact customer support SIMILAR CONTENT BEING VIEWED BY OTHERS LILRB4 REGULATES MULTIPLE MYELOMA DEVELOPMENT THROUGH STAT3-PFKFB1 PATHWAY


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of Copenhagen, Denmark for technical assistance and Dr med. Anders Waage at St Olavs Hospital, Trondheim University Hospital, Norway for providing some of the patient material. This work was


supported by grants from the Central Norway Regional Health Authority, Norwegian University of Science and Technology, the Norwegian Cancer Society and the Norwegian Research Council.


AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway J Bohnhorst, S H Moen, M


Fløttum, M Børset, T Espevik & A Sundan * Department of Hematology L54P4, Herlev Hospital, University of Copenhagen, Herlev, Denmark T Rasmussen & L Knudsen Authors * J Bohnhorst


View author publications You can also search for this author inPubMed Google Scholar * T Rasmussen View author publications You can also search for this author inPubMed Google Scholar * S H


Moen View author publications You can also search for this author inPubMed Google Scholar * M Fløttum View author publications You can also search for this author inPubMed Google Scholar * L


Knudsen View author publications You can also search for this author inPubMed Google Scholar * M Børset View author publications You can also search for this author inPubMed Google Scholar


* T Espevik View author publications You can also search for this author inPubMed Google Scholar * A Sundan View author publications You can also search for this author inPubMed Google


Scholar CORRESPONDING AUTHOR Correspondence to J Bohnhorst. ADDITIONAL INFORMATION Supplementary Information accompanies the paper on the Leukemia website (http://www.nature.com/leu)


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FIGURE LEGENDS (DOC 25 KB) RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Bohnhorst, J., Rasmussen, T., Moen, S. _et al._ Toll-like receptors mediate


proliferation and survival of multiple myeloma cells. _Leukemia_ 20, 1138–1144 (2006). https://doi.org/10.1038/sj.leu.2404225 Download citation * Received: 06 September 2005 * Revised: 02


January 2006 * Accepted: 05 January 2006 * Published: 13 April 2006 * Issue Date: 01 June 2006 * DOI: https://doi.org/10.1038/sj.leu.2404225 SHARE THIS ARTICLE Anyone you share the following


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SharedIt content-sharing initiative KEYWORDS * Toll-like rfeceptor * multiple myeloma * plasma cells * proliferation * survival