Blockade of HMGB1 signaling pathway by ethyl pyruvate inhibits tumor growth in diffuse large B-cell lymphoma

High mobility group box 1 (HMGB1) protein in the tumor microenvironment actively contributes to tumor progression but its role in diffuse large B-cell lymphoma (DLBCL) is unknown. The aim of this study was to determine the mechanism by which HMGB1 promotes tumor growth in DLBCL and whether blockade...

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Veröffentlicht in:Cell death & disease 2019-04, Vol.10 (5), p.330-330, Article 330
Hauptverfasser: Zhang, Tian, Guan, Xu-Wen, Gribben, John G., Liu, Feng-Ting, Jia, Li
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description High mobility group box 1 (HMGB1) protein in the tumor microenvironment actively contributes to tumor progression but its role in diffuse large B-cell lymphoma (DLBCL) is unknown. The aim of this study was to determine the mechanism by which HMGB1 promotes tumor growth in DLBCL and whether blockade of HMGB1 signaling pathway could inhibit tumorigenesis. We report that HMGB1 promotes proliferation of DLBCL cells by activation of AKT, extracellular signal-regulated kinases 1/2 (ERK1/2), signal transducer and activator of transcription 3 (STAT3) and SRC Proto-Oncogene, Non-Receptor Tyrosine Kinase (Src). Ethyl pyruvate (EP), an anti-inflammatory agent, inhibits HMGB1 active release from DLBCL cells and significantly inhibited proliferation of DLBCL cells in vitro. Treatment with EP significantly prevented and inhibited tumor growth in vivo and prolonged DLBCL-bearing mice survival. EP significantly downregulated HMGB1 expression and phosphorylation of Src and ERK1/2 in mice lymphoma tissue. EP induced accumulation of the cell cycle inhibitor p27 but downregulated expression of cyclin-dependent kinase 2 (CDK2). Increased nuclear translocation of p27 interacted with CDK2 and cyclin A, which led to blockade of cell cycle progression at the G1 to S phase transition. In conclusion, we demonstrated for the first time that blockade of HMGB1-mediated signaling pathway by EP effectively inhibited DLBCL tumorigenesis and disease progression.
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The aim of this study was to determine the mechanism by which HMGB1 promotes tumor growth in DLBCL and whether blockade of HMGB1 signaling pathway could inhibit tumorigenesis. We report that HMGB1 promotes proliferation of DLBCL cells by activation of AKT, extracellular signal-regulated kinases 1/2 (ERK1/2), signal transducer and activator of transcription 3 (STAT3) and SRC Proto-Oncogene, Non-Receptor Tyrosine Kinase (Src). Ethyl pyruvate (EP), an anti-inflammatory agent, inhibits HMGB1 active release from DLBCL cells and significantly inhibited proliferation of DLBCL cells in vitro. Treatment with EP significantly prevented and inhibited tumor growth in vivo and prolonged DLBCL-bearing mice survival. EP significantly downregulated HMGB1 expression and phosphorylation of Src and ERK1/2 in mice lymphoma tissue. EP induced accumulation of the cell cycle inhibitor p27 but downregulated expression of cyclin-dependent kinase 2 (CDK2). Increased nuclear translocation of p27 interacted with CDK2 and cyclin A, which led to blockade of cell cycle progression at the G1 to S phase transition. 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><jtitle>Cell death &amp; disease</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhang, Tian</au><au>Guan, Xu-Wen</au><au>Gribben, John G.</au><au>Liu, Feng-Ting</au><au>Jia, Li</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Blockade of HMGB1 signaling pathway by ethyl pyruvate inhibits tumor growth in diffuse large B-cell lymphoma</atitle><jtitle>Cell death &amp; disease</jtitle><stitle>Cell Death Dis</stitle><addtitle>Cell Death Dis</addtitle><date>2019-04-15</date><risdate>2019</risdate><volume>10</volume><issue>5</issue><spage>330</spage><epage>330</epage><pages>330-330</pages><artnum>330</artnum><issn>2041-4889</issn><eissn>2041-4889</eissn><abstract>High mobility group box 1 (HMGB1) protein in the tumor microenvironment actively contributes to tumor progression but its role in diffuse large B-cell lymphoma (DLBCL) is unknown. The aim of this study was to determine the mechanism by which HMGB1 promotes tumor growth in DLBCL and whether blockade of HMGB1 signaling pathway could inhibit tumorigenesis. We report that HMGB1 promotes proliferation of DLBCL cells by activation of AKT, extracellular signal-regulated kinases 1/2 (ERK1/2), signal transducer and activator of transcription 3 (STAT3) and SRC Proto-Oncogene, Non-Receptor Tyrosine Kinase (Src). Ethyl pyruvate (EP), an anti-inflammatory agent, inhibits HMGB1 active release from DLBCL cells and significantly inhibited proliferation of DLBCL cells in vitro. Treatment with EP significantly prevented and inhibited tumor growth in vivo and prolonged DLBCL-bearing mice survival. EP significantly downregulated HMGB1 expression and phosphorylation of Src and ERK1/2 in mice lymphoma tissue. EP induced accumulation of the cell cycle inhibitor p27 but downregulated expression of cyclin-dependent kinase 2 (CDK2). Increased nuclear translocation of p27 interacted with CDK2 and cyclin A, which led to blockade of cell cycle progression at the G1 to S phase transition. In conclusion, we demonstrated for the first time that blockade of HMGB1-mediated signaling pathway by EP effectively inhibited DLBCL tumorigenesis and disease progression.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><pmid>30988279</pmid><doi>10.1038/s41419-019-1563-8</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0002-6076-8455</orcidid><oa>free_for_read</oa></addata></record>
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subjects 13/106
13/2
13/21
13/31
14/35
14/63
631/67/1059
631/67/2195
631/67/327
64/60
692/308/153
692/308/2778
82/29
82/80
AKT protein
Animals
Anti-Inflammatory Agents - pharmacology
Anti-Inflammatory Agents - therapeutic use
Antibodies
B-cell lymphoma
Biochemistry
Biomedical and Life Sciences
Cell Biology
Cell Culture
Cell cycle
Cell Line, Tumor
Cell proliferation
Cell Proliferation - drug effects
Cyclin A
Cyclin-dependent kinase 2
Cyclin-dependent kinase inhibitor p27
Cyclin-Dependent Kinase Inhibitor p27 - metabolism
Cyclin-dependent kinases
Extracellular signal-regulated kinase
Female
G1 Phase Cell Cycle Checkpoints - drug effects
High mobility group proteins
HMGB1 protein
HMGB1 Protein - metabolism
Humans
Immunology
Inflammation
Kinases
Life Sciences
Lymphocytes B
Lymphoma
Lymphoma, Large B-Cell, Diffuse - drug therapy
Lymphoma, Large B-Cell, Diffuse - metabolism
Lymphoma, Large B-Cell, Diffuse - pathology
Mice
Mice, Inbred BALB C
Mitogen-Activated Protein Kinase 1 - metabolism
Mitogen-Activated Protein Kinase 3 - metabolism
Nuclear transport
Phase transitions
Phosphorylation
Phosphorylation - drug effects
Protein-tyrosine kinase receptors
Proto-Oncogene Proteins c-akt - metabolism
Pyruvates - pharmacology
Pyruvates - therapeutic use
Pyruvic acid
S phase
Signal transduction
Signal Transduction - drug effects
Src protein
src-Family Kinases - metabolism
Stat3 protein
STAT3 Transcription Factor - metabolism
Transcription
Tumorigenesis
title Blockade of HMGB1 signaling pathway by ethyl pyruvate inhibits tumor growth in diffuse large B-cell lymphoma
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