XIAP expression is post-transcriptionally upregulated in childhood ALL and is associated with glucocorticoid response in T-cell ALL

Background Resistance to glucocorticoid induced apoptosis is one of the major risk factors for relapse and poor outcome in childhood acute lymphoblastic leukemia (ALL). Overexpression of X‐linked inhibitor of apoptosis protein (XIAP) has been shown to be associated with chemotherapy resistance in se...

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Veröffentlicht in:Pediatric blood & cancer 2010-08, Vol.55 (2), p.260-266
Hauptverfasser: Hundsdoerfer, Patrick, Dietrich, Isabell, Schmelz, Karin, Eckert, Cornelia, Henze, Günter
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container_issue 2
container_start_page 260
container_title Pediatric blood & cancer
container_volume 55
creator Hundsdoerfer, Patrick
Dietrich, Isabell
Schmelz, Karin
Eckert, Cornelia
Henze, Günter
description Background Resistance to glucocorticoid induced apoptosis is one of the major risk factors for relapse and poor outcome in childhood acute lymphoblastic leukemia (ALL). Overexpression of X‐linked inhibitor of apoptosis protein (XIAP) has been shown to be associated with chemotherapy resistance in several malignancies. Procedure XIAP protein and mRNA expression were determined in leukemic blasts of 51 childhood ALL patients and normal bone marrow mononuclear cells. XIAP expression was correlated with glucocorticoid response and outcome. Results XIAP protein but not mRNA expression was found to be highly increased in childhood ALL compared to control bone marrow mononuclear cells (MNC) (median: 3.5 vs. 0.14 ng/105 MNC, P 
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Overexpression of X‐linked inhibitor of apoptosis protein (XIAP) has been shown to be associated with chemotherapy resistance in several malignancies. Procedure XIAP protein and mRNA expression were determined in leukemic blasts of 51 childhood ALL patients and normal bone marrow mononuclear cells. XIAP expression was correlated with glucocorticoid response and outcome. Results XIAP protein but not mRNA expression was found to be highly increased in childhood ALL compared to control bone marrow mononuclear cells (MNC) (median: 3.5 vs. 0.14 ng/105 MNC, P &lt; 0.0001) indicating a post‐transcriptional regulation of XIAP expression. In patients with T‐cell ALL, poor prednisone response was associated with increased XIAP expression (median: 2.8 in good vs. 5.8 in poor responders; P = 0.005). Similarly, T‐cell ALL patients suffering adverse events showed higher initial XIAP levels than patients in continuous complete remission (CCR) (median: 2.7 in patients in CCR vs. 5.6 in patients suffering adverse events; P = 0.007). XIAP inhibition using the low‐molecular‐weight SMAC mimetic LBW242 resulted in a significant increase of prednisone‐induced apoptosis in vitro. Conclusion In childhood ALL compared to control bone marrow, the expression of the apoptosis inhibitor XIAP is highly increased by post‐transcriptional regulation. The association with poor in vivo glucocorticoid response and outcome in T‐cell ALL suggests XIAP inhibition as a promising novel approach for the treatment of resistant ALL. Pediatr Blood Cancer. 2010;55:260–266. © 2010 Wiley–Liss, Inc.</description><identifier>ISSN: 1545-5009</identifier><identifier>ISSN: 1545-5017</identifier><identifier>EISSN: 1545-5017</identifier><identifier>DOI: 10.1002/pbc.22541</identifier><identifier>PMID: 20582956</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>Acute lymphatic leukemia ; Adult ; ALL ; Antineoplastic Combined Chemotherapy Protocols - pharmacology ; Apoptosis ; Blast ; Blood ; Bone marrow ; Bone Marrow Cells - pathology ; Bone Marrow Examination ; Cancer ; Chemotherapy ; Child ; Children ; DIABLO protein ; Drug Resistance ; Female ; Gene expression ; Gene Expression Regulation, Leukemic ; Glucocorticoids ; Glucocorticoids - pharmacology ; Glucocorticoids - therapeutic use ; Humans ; Leukemia-Lymphoma, Adult T-Cell - drug therapy ; Leukocytes (mononuclear) ; Lymphocytes T ; Male ; Malignancy ; molecular biology ; molecular diagnosis &amp; therapy ; Monocytes - pathology ; pediatric hematology/oncology ; Pharmacogenetics ; Post-transcription ; Precursor Cell Lymphoblastic Leukemia-Lymphoma - drug therapy ; Precursor Cell Lymphoblastic Leukemia-Lymphoma - genetics ; Precursor Cell Lymphoblastic Leukemia-Lymphoma - pathology ; Prednisone ; Prognosis ; Remission ; Risk factors ; RNA, Messenger - analysis ; Treatment Outcome ; Up-Regulation ; X chromosome ; X-Linked Inhibitor of Apoptosis Protein - analysis ; X-Linked Inhibitor of Apoptosis Protein - genetics ; XIAP protein</subject><ispartof>Pediatric blood &amp; cancer, 2010-08, Vol.55 (2), p.260-266</ispartof><rights>Copyright © 2010 Wiley‐Liss, Inc.</rights><rights>(c) 2010 Wiley-Liss, Inc.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3951-f5ec717665c4ce33bf2a22b23c7a3eab64e5c6bdb7a34585fbb4f4eade34f56e3</citedby><cites>FETCH-LOGICAL-c3951-f5ec717665c4ce33bf2a22b23c7a3eab64e5c6bdb7a34585fbb4f4eade34f56e3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fpbc.22541$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fpbc.22541$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20582956$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Hundsdoerfer, Patrick</creatorcontrib><creatorcontrib>Dietrich, Isabell</creatorcontrib><creatorcontrib>Schmelz, Karin</creatorcontrib><creatorcontrib>Eckert, Cornelia</creatorcontrib><creatorcontrib>Henze, Günter</creatorcontrib><title>XIAP expression is post-transcriptionally upregulated in childhood ALL and is associated with glucocorticoid response in T-cell ALL</title><title>Pediatric blood &amp; cancer</title><addtitle>Pediatr. Blood Cancer</addtitle><description>Background Resistance to glucocorticoid induced apoptosis is one of the major risk factors for relapse and poor outcome in childhood acute lymphoblastic leukemia (ALL). Overexpression of X‐linked inhibitor of apoptosis protein (XIAP) has been shown to be associated with chemotherapy resistance in several malignancies. Procedure XIAP protein and mRNA expression were determined in leukemic blasts of 51 childhood ALL patients and normal bone marrow mononuclear cells. XIAP expression was correlated with glucocorticoid response and outcome. Results XIAP protein but not mRNA expression was found to be highly increased in childhood ALL compared to control bone marrow mononuclear cells (MNC) (median: 3.5 vs. 0.14 ng/105 MNC, P &lt; 0.0001) indicating a post‐transcriptional regulation of XIAP expression. In patients with T‐cell ALL, poor prednisone response was associated with increased XIAP expression (median: 2.8 in good vs. 5.8 in poor responders; P = 0.005). Similarly, T‐cell ALL patients suffering adverse events showed higher initial XIAP levels than patients in continuous complete remission (CCR) (median: 2.7 in patients in CCR vs. 5.6 in patients suffering adverse events; P = 0.007). XIAP inhibition using the low‐molecular‐weight SMAC mimetic LBW242 resulted in a significant increase of prednisone‐induced apoptosis in vitro. Conclusion In childhood ALL compared to control bone marrow, the expression of the apoptosis inhibitor XIAP is highly increased by post‐transcriptional regulation. The association with poor in vivo glucocorticoid response and outcome in T‐cell ALL suggests XIAP inhibition as a promising novel approach for the treatment of resistant ALL. Pediatr Blood Cancer. 2010;55:260–266. © 2010 Wiley–Liss, Inc.</description><subject>Acute lymphatic leukemia</subject><subject>Adult</subject><subject>ALL</subject><subject>Antineoplastic Combined Chemotherapy Protocols - pharmacology</subject><subject>Apoptosis</subject><subject>Blast</subject><subject>Blood</subject><subject>Bone marrow</subject><subject>Bone Marrow Cells - pathology</subject><subject>Bone Marrow Examination</subject><subject>Cancer</subject><subject>Chemotherapy</subject><subject>Child</subject><subject>Children</subject><subject>DIABLO protein</subject><subject>Drug Resistance</subject><subject>Female</subject><subject>Gene expression</subject><subject>Gene Expression Regulation, Leukemic</subject><subject>Glucocorticoids</subject><subject>Glucocorticoids - pharmacology</subject><subject>Glucocorticoids - therapeutic use</subject><subject>Humans</subject><subject>Leukemia-Lymphoma, Adult T-Cell - drug therapy</subject><subject>Leukocytes (mononuclear)</subject><subject>Lymphocytes T</subject><subject>Male</subject><subject>Malignancy</subject><subject>molecular biology</subject><subject>molecular diagnosis &amp; therapy</subject><subject>Monocytes - pathology</subject><subject>pediatric hematology/oncology</subject><subject>Pharmacogenetics</subject><subject>Post-transcription</subject><subject>Precursor Cell Lymphoblastic Leukemia-Lymphoma - drug therapy</subject><subject>Precursor Cell Lymphoblastic Leukemia-Lymphoma - genetics</subject><subject>Precursor Cell Lymphoblastic Leukemia-Lymphoma - pathology</subject><subject>Prednisone</subject><subject>Prognosis</subject><subject>Remission</subject><subject>Risk factors</subject><subject>RNA, Messenger - analysis</subject><subject>Treatment Outcome</subject><subject>Up-Regulation</subject><subject>X chromosome</subject><subject>X-Linked Inhibitor of Apoptosis Protein - analysis</subject><subject>X-Linked Inhibitor of Apoptosis Protein - genetics</subject><subject>XIAP protein</subject><issn>1545-5009</issn><issn>1545-5017</issn><issn>1545-5017</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kU9v0zAYhy0EYmNw4Asg34BDNv9N2mNX0TIpgh6GmLhYtvNmNbhxsBNtPfPFcdatNzi9tvU8v9fSD6G3lJxTQthFb-w5Y1LQZ-iUSiELSWj1_Hgm8xP0KqWfGS2JnL1EJywPNpflKfpzc7XYYLjvI6TkQoddwn1IQzFE3SUbXT_kV-39Ho-ZuR29HqDBrsN263yzDaHBi7rGumsmVacUrHtA7tywxbd-tMGGODgbXIPzkj50CSb_urDg_SS_Ri9a7RO8eZxn6Nvq0_Xyc1F_XV8tF3Vh-VzSopVgK1qVpbTCAuemZZoxw7itNAdtSgHSlqYx-SrkTLbGiFaAboCLVpbAz9D7Q24fw-8R0qB2Lk2f0B2EMamKc1kRJmUmP_yXpISRmSB8RjP68YDaGFKK0Ko-up2O-wypqR2V21EP7WT23WPsaHbQHMmnOjJwcQDunIf9v5PU5nL5FFkcDJcGuD8aOv5SZcUrqb5_Wav6x4pu1jcrdcn_AlfDqms</recordid><startdate>201008</startdate><enddate>201008</enddate><creator>Hundsdoerfer, Patrick</creator><creator>Dietrich, Isabell</creator><creator>Schmelz, Karin</creator><creator>Eckert, Cornelia</creator><creator>Henze, Günter</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7T5</scope><scope>H94</scope><scope>7X8</scope></search><sort><creationdate>201008</creationdate><title>XIAP expression is post-transcriptionally upregulated in childhood ALL and is associated with glucocorticoid response in T-cell ALL</title><author>Hundsdoerfer, Patrick ; Dietrich, Isabell ; Schmelz, Karin ; Eckert, Cornelia ; Henze, Günter</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3951-f5ec717665c4ce33bf2a22b23c7a3eab64e5c6bdb7a34585fbb4f4eade34f56e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Acute lymphatic leukemia</topic><topic>Adult</topic><topic>ALL</topic><topic>Antineoplastic Combined Chemotherapy Protocols - pharmacology</topic><topic>Apoptosis</topic><topic>Blast</topic><topic>Blood</topic><topic>Bone marrow</topic><topic>Bone Marrow Cells - pathology</topic><topic>Bone Marrow Examination</topic><topic>Cancer</topic><topic>Chemotherapy</topic><topic>Child</topic><topic>Children</topic><topic>DIABLO protein</topic><topic>Drug Resistance</topic><topic>Female</topic><topic>Gene expression</topic><topic>Gene Expression Regulation, Leukemic</topic><topic>Glucocorticoids</topic><topic>Glucocorticoids - pharmacology</topic><topic>Glucocorticoids - therapeutic use</topic><topic>Humans</topic><topic>Leukemia-Lymphoma, Adult T-Cell - drug therapy</topic><topic>Leukocytes (mononuclear)</topic><topic>Lymphocytes T</topic><topic>Male</topic><topic>Malignancy</topic><topic>molecular biology</topic><topic>molecular diagnosis &amp; therapy</topic><topic>Monocytes - pathology</topic><topic>pediatric hematology/oncology</topic><topic>Pharmacogenetics</topic><topic>Post-transcription</topic><topic>Precursor Cell Lymphoblastic Leukemia-Lymphoma - drug therapy</topic><topic>Precursor Cell Lymphoblastic Leukemia-Lymphoma - genetics</topic><topic>Precursor Cell Lymphoblastic Leukemia-Lymphoma - pathology</topic><topic>Prednisone</topic><topic>Prognosis</topic><topic>Remission</topic><topic>Risk factors</topic><topic>RNA, Messenger - analysis</topic><topic>Treatment Outcome</topic><topic>Up-Regulation</topic><topic>X chromosome</topic><topic>X-Linked Inhibitor of Apoptosis Protein - analysis</topic><topic>X-Linked Inhibitor of Apoptosis Protein - genetics</topic><topic>XIAP protein</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hundsdoerfer, Patrick</creatorcontrib><creatorcontrib>Dietrich, Isabell</creatorcontrib><creatorcontrib>Schmelz, Karin</creatorcontrib><creatorcontrib>Eckert, Cornelia</creatorcontrib><creatorcontrib>Henze, Günter</creatorcontrib><collection>Istex</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Immunology Abstracts</collection><collection>AIDS and Cancer Research Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Pediatric blood &amp; cancer</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hundsdoerfer, Patrick</au><au>Dietrich, Isabell</au><au>Schmelz, Karin</au><au>Eckert, Cornelia</au><au>Henze, Günter</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>XIAP expression is post-transcriptionally upregulated in childhood ALL and is associated with glucocorticoid response in T-cell ALL</atitle><jtitle>Pediatric blood &amp; cancer</jtitle><addtitle>Pediatr. Blood Cancer</addtitle><date>2010-08</date><risdate>2010</risdate><volume>55</volume><issue>2</issue><spage>260</spage><epage>266</epage><pages>260-266</pages><issn>1545-5009</issn><issn>1545-5017</issn><eissn>1545-5017</eissn><abstract>Background Resistance to glucocorticoid induced apoptosis is one of the major risk factors for relapse and poor outcome in childhood acute lymphoblastic leukemia (ALL). Overexpression of X‐linked inhibitor of apoptosis protein (XIAP) has been shown to be associated with chemotherapy resistance in several malignancies. Procedure XIAP protein and mRNA expression were determined in leukemic blasts of 51 childhood ALL patients and normal bone marrow mononuclear cells. XIAP expression was correlated with glucocorticoid response and outcome. Results XIAP protein but not mRNA expression was found to be highly increased in childhood ALL compared to control bone marrow mononuclear cells (MNC) (median: 3.5 vs. 0.14 ng/105 MNC, P &lt; 0.0001) indicating a post‐transcriptional regulation of XIAP expression. In patients with T‐cell ALL, poor prednisone response was associated with increased XIAP expression (median: 2.8 in good vs. 5.8 in poor responders; P = 0.005). Similarly, T‐cell ALL patients suffering adverse events showed higher initial XIAP levels than patients in continuous complete remission (CCR) (median: 2.7 in patients in CCR vs. 5.6 in patients suffering adverse events; P = 0.007). XIAP inhibition using the low‐molecular‐weight SMAC mimetic LBW242 resulted in a significant increase of prednisone‐induced apoptosis in vitro. Conclusion In childhood ALL compared to control bone marrow, the expression of the apoptosis inhibitor XIAP is highly increased by post‐transcriptional regulation. The association with poor in vivo glucocorticoid response and outcome in T‐cell ALL suggests XIAP inhibition as a promising novel approach for the treatment of resistant ALL. Pediatr Blood Cancer. 2010;55:260–266. © 2010 Wiley–Liss, Inc.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><pmid>20582956</pmid><doi>10.1002/pbc.22541</doi><tpages>7</tpages></addata></record>
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subjects Acute lymphatic leukemia
Adult
ALL
Antineoplastic Combined Chemotherapy Protocols - pharmacology
Apoptosis
Blast
Blood
Bone marrow
Bone Marrow Cells - pathology
Bone Marrow Examination
Cancer
Chemotherapy
Child
Children
DIABLO protein
Drug Resistance
Female
Gene expression
Gene Expression Regulation, Leukemic
Glucocorticoids
Glucocorticoids - pharmacology
Glucocorticoids - therapeutic use
Humans
Leukemia-Lymphoma, Adult T-Cell - drug therapy
Leukocytes (mononuclear)
Lymphocytes T
Male
Malignancy
molecular biology
molecular diagnosis & therapy
Monocytes - pathology
pediatric hematology/oncology
Pharmacogenetics
Post-transcription
Precursor Cell Lymphoblastic Leukemia-Lymphoma - drug therapy
Precursor Cell Lymphoblastic Leukemia-Lymphoma - genetics
Precursor Cell Lymphoblastic Leukemia-Lymphoma - pathology
Prednisone
Prognosis
Remission
Risk factors
RNA, Messenger - analysis
Treatment Outcome
Up-Regulation
X chromosome
X-Linked Inhibitor of Apoptosis Protein - analysis
X-Linked Inhibitor of Apoptosis Protein - genetics
XIAP protein
title XIAP expression is post-transcriptionally upregulated in childhood ALL and is associated with glucocorticoid response in T-cell ALL
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