HSP90 inhibition sensitizes head and neck cancer to platin-based chemoradiotherapy by modulation of the DNA damage response resulting in chromosomal fragmentation

Concurrent cisplatin radiotherapy (CCRT) is a current standard-of-care for locally advanced head and neck squamous cell carcinoma (HNSCC). However, CCRT is frequently ineffective in patients with advanced disease. It has previously been shown that HSP90 inhibitors act as radiosensitizers, but these...

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Veröffentlicht in:BMC cancer 2017-01, Vol.17 (1), p.86, Article 86
Hauptverfasser: McLaughlin, Martin, Barker, Holly E, Khan, Aadil A, Pedersen, Malin, Dillon, Magnus, Mansfield, David C, Patel, Radhika, Kyula, Joan N, Bhide, Shreerang A, Newbold, Kate L, Nutting, Christopher M, Harrington, Kevin J
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container_issue 1
container_start_page 86
container_title BMC cancer
container_volume 17
creator McLaughlin, Martin
Barker, Holly E
Khan, Aadil A
Pedersen, Malin
Dillon, Magnus
Mansfield, David C
Patel, Radhika
Kyula, Joan N
Bhide, Shreerang A
Newbold, Kate L
Nutting, Christopher M
Harrington, Kevin J
description Concurrent cisplatin radiotherapy (CCRT) is a current standard-of-care for locally advanced head and neck squamous cell carcinoma (HNSCC). However, CCRT is frequently ineffective in patients with advanced disease. It has previously been shown that HSP90 inhibitors act as radiosensitizers, but these studies have not focused on CCRT in HNSCC. Here, we evaluated the HSP90 inhibitor, AUY922, combined with CCRT. The ability of AUY922 to sensitize to CCRT was assessed in p53 mutant head and neck cell lines by clonogenic assay. Modulation of the CCRT induced DNA damage response (DDR) by AUY922 was characterized by confocal image analysis of RAD51, BRCA1, 53BP1, ATM and mutant p53 signaling. The role of FANCA depletion by AUY922 was examined using shRNA. Cell cycle checkpoint abrogation and chromosomal fragmentation was assessed by western blot, FACS and confocal. The role of ATM was also assessed by shRNA. AUY922 in combination with CCRT was assessed in vivo. The combination of AUY922 with cisplatin, radiation and CCRT was found to be synergistic in p53 mutant HNSCC. AUY922 leads to significant alterations to the DDR induced by CCRT. This comprises inhibition of homologous recombination through decreased RAD51 and pS1524 BRCA1 with a corresponding increase in 53BP1 foci, activation of ATM and signaling into mutant p53. A shift to more error prone repair combined with a loss of checkpoint function leads to fragmentation of chromosomal material. The degree of disruption to DDR signalling correlated to chromosomal fragmentation and loss of clonogenicity. ATM shRNA indicated a possible rationale for the combination of AUY922 and CCRT in cells lacking ATM function. This study supports future clinical studies combining AUY922 and CCRT in p53 mutant HNSCC. Modulation of the DDR and chromosomal fragmentation are likely to be analytical points of interest in such trials.
doi_str_mv 10.1186/s12885-017-3084-0
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However, CCRT is frequently ineffective in patients with advanced disease. It has previously been shown that HSP90 inhibitors act as radiosensitizers, but these studies have not focused on CCRT in HNSCC. Here, we evaluated the HSP90 inhibitor, AUY922, combined with CCRT. The ability of AUY922 to sensitize to CCRT was assessed in p53 mutant head and neck cell lines by clonogenic assay. Modulation of the CCRT induced DNA damage response (DDR) by AUY922 was characterized by confocal image analysis of RAD51, BRCA1, 53BP1, ATM and mutant p53 signaling. The role of FANCA depletion by AUY922 was examined using shRNA. Cell cycle checkpoint abrogation and chromosomal fragmentation was assessed by western blot, FACS and confocal. The role of ATM was also assessed by shRNA. AUY922 in combination with CCRT was assessed in vivo. The combination of AUY922 with cisplatin, radiation and CCRT was found to be synergistic in p53 mutant HNSCC. 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However, CCRT is frequently ineffective in patients with advanced disease. It has previously been shown that HSP90 inhibitors act as radiosensitizers, but these studies have not focused on CCRT in HNSCC. Here, we evaluated the HSP90 inhibitor, AUY922, combined with CCRT. The ability of AUY922 to sensitize to CCRT was assessed in p53 mutant head and neck cell lines by clonogenic assay. Modulation of the CCRT induced DNA damage response (DDR) by AUY922 was characterized by confocal image analysis of RAD51, BRCA1, 53BP1, ATM and mutant p53 signaling. The role of FANCA depletion by AUY922 was examined using shRNA. Cell cycle checkpoint abrogation and chromosomal fragmentation was assessed by western blot, FACS and confocal. The role of ATM was also assessed by shRNA. AUY922 in combination with CCRT was assessed in vivo. The combination of AUY922 with cisplatin, radiation and CCRT was found to be synergistic in p53 mutant HNSCC. AUY922 leads to significant alterations to the DDR induced by CCRT. This comprises inhibition of homologous recombination through decreased RAD51 and pS1524 BRCA1 with a corresponding increase in 53BP1 foci, activation of ATM and signaling into mutant p53. A shift to more error prone repair combined with a loss of checkpoint function leads to fragmentation of chromosomal material. The degree of disruption to DDR signalling correlated to chromosomal fragmentation and loss of clonogenicity. ATM shRNA indicated a possible rationale for the combination of AUY922 and CCRT in cells lacking ATM function. This study supports future clinical studies combining AUY922 and CCRT in p53 mutant HNSCC. Modulation of the DDR and chromosomal fragmentation are likely to be analytical points of interest in such trials.</description><subject>Animals</subject><subject>Antibodies</subject><subject>Antigens</subject><subject>Automation</subject><subject>BRCA1 Protein - genetics</subject><subject>Carcinoma, Squamous Cell - drug therapy</subject><subject>Carcinoma, Squamous Cell - genetics</subject><subject>Carcinoma, Squamous Cell - metabolism</subject><subject>Carcinoma, Squamous Cell - radiotherapy</subject><subject>Care and treatment</subject><subject>Cell cycle</subject><subject>Cell Line, Tumor</subject><subject>Chemoradiotherapy - methods</subject><subject>Chromosomes - drug effects</subject><subject>Chromosomes - genetics</subject><subject>Cisplatin</subject><subject>DNA damage</subject><subject>DNA Damage - drug effects</subject><subject>DNA Damage - genetics</subject><subject>DNA Damage - radiation effects</subject><subject>DNA Fragmentation - drug effects</subject><subject>DNA repair</subject><subject>DNA Repair - drug effects</subject><subject>DNA Repair - genetics</subject><subject>DNA Repair - radiation effects</subject><subject>Dosage and administration</subject><subject>Female</subject><subject>Head and neck cancer</subject><subject>Head and Neck Neoplasms - drug therapy</subject><subject>Head and Neck Neoplasms - genetics</subject><subject>Head and Neck Neoplasms - metabolism</subject><subject>Head and Neck Neoplasms - radiotherapy</subject><subject>Homologous Recombination - drug effects</subject><subject>HSP90 Heat-Shock Proteins - antagonists &amp; inhibitors</subject><subject>Human papillomavirus</subject><subject>Humans</subject><subject>Isoxazoles - pharmacology</subject><subject>Medical prognosis</subject><subject>Mice, Inbred BALB C</subject><subject>Mice, Nude</subject><subject>Organoplatinum Compounds - pharmacology</subject><subject>Plasmids</subject><subject>Protein Kinase Inhibitors - pharmacology</subject><subject>Proteins</subject><subject>Radiation therapy</subject><subject>Radiotherapy</subject><subject>Resorcinols - pharmacology</subject><subject>Squamous Cell Carcinoma of Head and Neck</subject><subject>Tumor Suppressor Protein p53 - genetics</subject><issn>1471-2407</issn><issn>1471-2407</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>BENPR</sourceid><recordid>eNptkt-K1TAQxoso7rr6AN5IQBC86JqkaZvcCIf1zy4sKq5ehzSZtlnbpCateHwcn9R0z7qeA5KLDJnffBNmvix7SvApIbx6FQnlvMwxqfMCc5bje9kxYTXJKcP1_b34KHsU4zVOIMf8YXZEOWEFY-Vx9vv86pPAyLreNna23qEILqboF0TUgzJIOYMc6G9IK6choNmjaVCzdXmjIhikexh9UMb6uYegpi1qtmj0ZlmhpOdblBLozYcNMmpUHaAAcfIu3gTLkJS61D_pBD_66Ec1oDaobgQ33yg8zh60aojw5PY-yb6-e_vl7Dy__Pj-4mxzmeuyFHNeVoaCwU1bGaE1rTVlgtYcSEuhEZgLVVS8aZuGCV7SOuUJbUQaQyF4ReqiOMle73SnpRnB6NQ_qEFOwY4qbKVXVh5mnO1l53_IknJa41Xg-a1A8N8XiLO89ktw6c8ybavgnNVF-Y_q1ADSutYnMT3aqOWGcVyyWuAqUaf_odIxMFrtHbQ2vR8UvDwoSMwMP-dOLTHKi6vPh-yLPTZteZj76IdlnXY8BMkO1MHHGKC9mwbBcrWg3FlQJmfJ1YISp5pn-2O8q_jrueIPZu3Xfg</recordid><startdate>20170131</startdate><enddate>20170131</enddate><creator>McLaughlin, Martin</creator><creator>Barker, Holly E</creator><creator>Khan, Aadil A</creator><creator>Pedersen, Malin</creator><creator>Dillon, Magnus</creator><creator>Mansfield, David C</creator><creator>Patel, Radhika</creator><creator>Kyula, Joan N</creator><creator>Bhide, Shreerang A</creator><creator>Newbold, Kate L</creator><creator>Nutting, Christopher M</creator><creator>Harrington, Kevin J</creator><general>BioMed Central Ltd</general><general>BioMed Central</general><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>ISR</scope><scope>3V.</scope><scope>7TO</scope><scope>7X7</scope><scope>7XB</scope><scope>88E</scope><scope>8FI</scope><scope>8FJ</scope><scope>8FK</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>FYUFA</scope><scope>GHDGH</scope><scope>H94</scope><scope>K9.</scope><scope>M0S</scope><scope>M1P</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>5PM</scope></search><sort><creationdate>20170131</creationdate><title>HSP90 inhibition sensitizes head and neck cancer to platin-based chemoradiotherapy by modulation of the DNA damage response resulting in chromosomal fragmentation</title><author>McLaughlin, Martin ; Barker, Holly E ; Khan, Aadil A ; Pedersen, Malin ; Dillon, Magnus ; Mansfield, David C ; Patel, Radhika ; Kyula, Joan N ; Bhide, Shreerang A ; Newbold, Kate L ; Nutting, Christopher M ; Harrington, Kevin J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c559t-56d2ed0bf6d9cc27c249278e1f2eb9089a368bfbb4985277c212b943439861733</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>Animals</topic><topic>Antibodies</topic><topic>Antigens</topic><topic>Automation</topic><topic>BRCA1 Protein - genetics</topic><topic>Carcinoma, Squamous Cell - drug therapy</topic><topic>Carcinoma, Squamous Cell - genetics</topic><topic>Carcinoma, Squamous Cell - metabolism</topic><topic>Carcinoma, Squamous Cell - radiotherapy</topic><topic>Care and treatment</topic><topic>Cell cycle</topic><topic>Cell Line, Tumor</topic><topic>Chemoradiotherapy - methods</topic><topic>Chromosomes - drug effects</topic><topic>Chromosomes - genetics</topic><topic>Cisplatin</topic><topic>DNA damage</topic><topic>DNA Damage - drug effects</topic><topic>DNA Damage - genetics</topic><topic>DNA Damage - radiation effects</topic><topic>DNA Fragmentation - drug effects</topic><topic>DNA repair</topic><topic>DNA Repair - drug effects</topic><topic>DNA Repair - genetics</topic><topic>DNA Repair - radiation effects</topic><topic>Dosage and administration</topic><topic>Female</topic><topic>Head and neck cancer</topic><topic>Head and Neck Neoplasms - drug therapy</topic><topic>Head and Neck Neoplasms - genetics</topic><topic>Head and Neck Neoplasms - metabolism</topic><topic>Head and Neck Neoplasms - radiotherapy</topic><topic>Homologous Recombination - drug effects</topic><topic>HSP90 Heat-Shock Proteins - antagonists &amp; inhibitors</topic><topic>Human papillomavirus</topic><topic>Humans</topic><topic>Isoxazoles - pharmacology</topic><topic>Medical prognosis</topic><topic>Mice, Inbred BALB C</topic><topic>Mice, Nude</topic><topic>Organoplatinum Compounds - pharmacology</topic><topic>Plasmids</topic><topic>Protein Kinase Inhibitors - pharmacology</topic><topic>Proteins</topic><topic>Radiation therapy</topic><topic>Radiotherapy</topic><topic>Resorcinols - pharmacology</topic><topic>Squamous Cell Carcinoma of Head and Neck</topic><topic>Tumor Suppressor Protein p53 - genetics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>McLaughlin, Martin</creatorcontrib><creatorcontrib>Barker, Holly E</creatorcontrib><creatorcontrib>Khan, Aadil A</creatorcontrib><creatorcontrib>Pedersen, Malin</creatorcontrib><creatorcontrib>Dillon, Magnus</creatorcontrib><creatorcontrib>Mansfield, David C</creatorcontrib><creatorcontrib>Patel, Radhika</creatorcontrib><creatorcontrib>Kyula, Joan N</creatorcontrib><creatorcontrib>Bhide, Shreerang A</creatorcontrib><creatorcontrib>Newbold, Kate L</creatorcontrib><creatorcontrib>Nutting, Christopher M</creatorcontrib><creatorcontrib>Harrington, Kevin J</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Gale In Context: Science</collection><collection>ProQuest Central (Corporate)</collection><collection>Oncogenes and Growth Factors Abstracts</collection><collection>Health &amp; 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However, CCRT is frequently ineffective in patients with advanced disease. It has previously been shown that HSP90 inhibitors act as radiosensitizers, but these studies have not focused on CCRT in HNSCC. Here, we evaluated the HSP90 inhibitor, AUY922, combined with CCRT. The ability of AUY922 to sensitize to CCRT was assessed in p53 mutant head and neck cell lines by clonogenic assay. Modulation of the CCRT induced DNA damage response (DDR) by AUY922 was characterized by confocal image analysis of RAD51, BRCA1, 53BP1, ATM and mutant p53 signaling. The role of FANCA depletion by AUY922 was examined using shRNA. Cell cycle checkpoint abrogation and chromosomal fragmentation was assessed by western blot, FACS and confocal. The role of ATM was also assessed by shRNA. AUY922 in combination with CCRT was assessed in vivo. The combination of AUY922 with cisplatin, radiation and CCRT was found to be synergistic in p53 mutant HNSCC. AUY922 leads to significant alterations to the DDR induced by CCRT. This comprises inhibition of homologous recombination through decreased RAD51 and pS1524 BRCA1 with a corresponding increase in 53BP1 foci, activation of ATM and signaling into mutant p53. A shift to more error prone repair combined with a loss of checkpoint function leads to fragmentation of chromosomal material. The degree of disruption to DDR signalling correlated to chromosomal fragmentation and loss of clonogenicity. ATM shRNA indicated a possible rationale for the combination of AUY922 and CCRT in cells lacking ATM function. This study supports future clinical studies combining AUY922 and CCRT in p53 mutant HNSCC. Modulation of the DDR and chromosomal fragmentation are likely to be analytical points of interest in such trials.</abstract><cop>England</cop><pub>BioMed Central Ltd</pub><pmid>28143445</pmid><doi>10.1186/s12885-017-3084-0</doi><oa>free_for_read</oa></addata></record>
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subjects Animals
Antibodies
Antigens
Automation
BRCA1 Protein - genetics
Carcinoma, Squamous Cell - drug therapy
Carcinoma, Squamous Cell - genetics
Carcinoma, Squamous Cell - metabolism
Carcinoma, Squamous Cell - radiotherapy
Care and treatment
Cell cycle
Cell Line, Tumor
Chemoradiotherapy - methods
Chromosomes - drug effects
Chromosomes - genetics
Cisplatin
DNA damage
DNA Damage - drug effects
DNA Damage - genetics
DNA Damage - radiation effects
DNA Fragmentation - drug effects
DNA repair
DNA Repair - drug effects
DNA Repair - genetics
DNA Repair - radiation effects
Dosage and administration
Female
Head and neck cancer
Head and Neck Neoplasms - drug therapy
Head and Neck Neoplasms - genetics
Head and Neck Neoplasms - metabolism
Head and Neck Neoplasms - radiotherapy
Homologous Recombination - drug effects
HSP90 Heat-Shock Proteins - antagonists & inhibitors
Human papillomavirus
Humans
Isoxazoles - pharmacology
Medical prognosis
Mice, Inbred BALB C
Mice, Nude
Organoplatinum Compounds - pharmacology
Plasmids
Protein Kinase Inhibitors - pharmacology
Proteins
Radiation therapy
Radiotherapy
Resorcinols - pharmacology
Squamous Cell Carcinoma of Head and Neck
Tumor Suppressor Protein p53 - genetics
title HSP90 inhibition sensitizes head and neck cancer to platin-based chemoradiotherapy by modulation of the DNA damage response resulting in chromosomal fragmentation
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