Efficacy of Onalespib, a Long-Acting Second-Generation HSP90 Inhibitor, as a Single Agent and in Combination with Temozolomide against Malignant Gliomas

HSP90, a highly conserved molecular chaperone that regulates the function of several oncogenic client proteins, is altered in glioblastoma. However, HSP90 inhibitors currently in clinical trials are short-acting, have unacceptable toxicities, or are unable to cross the blood-brain barrier (BBB). We...

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Veröffentlicht in:Clinical cancer research 2017-10, Vol.23 (20), p.6215-6226
Hauptverfasser: Canella, Alessandro, Welker, Alessandra M, Yoo, Ji Young, Xu, Jihong, Abas, Fazly S, Kesanakurti, Divya, Nagarajan, Prabakaran, Beattie, Christine E, Sulman, Erik P, Liu, Joseph, Gumin, Joy, Lang, Frederick F, Gurcan, Metin N, Kaur, Balveen, Sampath, Deepa, Puduvalli, Vinay K
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container_end_page 6226
container_issue 20
container_start_page 6215
container_title Clinical cancer research
container_volume 23
creator Canella, Alessandro
Welker, Alessandra M
Yoo, Ji Young
Xu, Jihong
Abas, Fazly S
Kesanakurti, Divya
Nagarajan, Prabakaran
Beattie, Christine E
Sulman, Erik P
Liu, Joseph
Gumin, Joy
Lang, Frederick F
Gurcan, Metin N
Kaur, Balveen
Sampath, Deepa
Puduvalli, Vinay K
description HSP90, a highly conserved molecular chaperone that regulates the function of several oncogenic client proteins, is altered in glioblastoma. However, HSP90 inhibitors currently in clinical trials are short-acting, have unacceptable toxicities, or are unable to cross the blood-brain barrier (BBB). We examined the efficacy of onalespib, a potent, long-acting novel HSP90 inhibitor as a single agent and in combination with temozolomide (TMZ) against gliomas and The effect of onalespib on HSP90, its client proteins, and on the biology of glioma cell lines and patient-derived glioma-initiating cells (GSC) was determined. Brain and plasma pharmacokinetics of onalespib and its ability to inhibit HSP90 were assessed in non-tumor-bearing mice. Its efficacy as a single agent or in combination with TMZ was assessed and using zebrafish and patient-derived GSC xenograft mouse glioma models. Onalespib-mediated HSP90 inhibition depleted several survival-promoting client proteins such as EGFR, EGFRvIII, and AKT, disrupted their downstream signaling, and decreased the proliferation, migration, angiogenesis, and survival of glioma cell lines and GSCs. Onalespib effectively crossed the BBB to inhibit HSP90 and extended survival as a single agent in zebrafish xenografts and in combination with TMZ in both zebrafish and GSC mouse xenografts. Our results demonstrate the long-acting effects of onalespib against gliomas and which combined with its ability to cross the BBB support its development as a potential therapeutic agent in combination with TMZ against gliomas. .
doi_str_mv 10.1158/1078-0432.CCR-16-3151
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However, HSP90 inhibitors currently in clinical trials are short-acting, have unacceptable toxicities, or are unable to cross the blood-brain barrier (BBB). We examined the efficacy of onalespib, a potent, long-acting novel HSP90 inhibitor as a single agent and in combination with temozolomide (TMZ) against gliomas and The effect of onalespib on HSP90, its client proteins, and on the biology of glioma cell lines and patient-derived glioma-initiating cells (GSC) was determined. Brain and plasma pharmacokinetics of onalespib and its ability to inhibit HSP90 were assessed in non-tumor-bearing mice. Its efficacy as a single agent or in combination with TMZ was assessed and using zebrafish and patient-derived GSC xenograft mouse glioma models. 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Welker, Alessandra M ; Yoo, Ji Young ; Xu, Jihong ; Abas, Fazly S ; Kesanakurti, Divya ; Nagarajan, Prabakaran ; Beattie, Christine E ; Sulman, Erik P ; Liu, Joseph ; Gumin, Joy ; Lang, Frederick F ; Gurcan, Metin N ; Kaur, Balveen ; Sampath, Deepa ; Puduvalli, Vinay K</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c439t-a621b13e22c319e528c04d0c1cf5f331ea95f8e94472ce2c7f48330fdb3910173</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><topic>AKT protein</topic><topic>Angiogenesis</topic><topic>Animal models</topic><topic>Animals</topic><topic>Antineoplastic Agents - pharmacokinetics</topic><topic>Antineoplastic Agents - pharmacology</topic><topic>Benzamides - pharmacokinetics</topic><topic>Benzamides - pharmacology</topic><topic>Biological effects</topic><topic>Biotechnology</topic><topic>Blood-brain barrier</topic><topic>Blood-Brain Barrier - metabolism</topic><topic>Brain</topic><topic>Brain tumors</topic><topic>Cell Line, Tumor</topic><topic>Cell Movement - drug effects</topic><topic>Cell Proliferation - drug effects</topic><topic>Cell survival</topic><topic>Chemical compounds</topic><topic>Clinical trials</topic><topic>Dacarbazine - analogs &amp; 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source MEDLINE; American Association for Cancer Research; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection
subjects AKT protein
Angiogenesis
Animal models
Animals
Antineoplastic Agents - pharmacokinetics
Antineoplastic Agents - pharmacology
Benzamides - pharmacokinetics
Benzamides - pharmacology
Biological effects
Biotechnology
Blood-brain barrier
Blood-Brain Barrier - metabolism
Brain
Brain tumors
Cell Line, Tumor
Cell Movement - drug effects
Cell Proliferation - drug effects
Cell survival
Chemical compounds
Clinical trials
Dacarbazine - analogs & derivatives
Dacarbazine - pharmacokinetics
Dacarbazine - pharmacology
Danio rerio
Disease Models, Animal
Drug Synergism
Drug Therapy, Combination
Effectiveness
Epidermal growth factor receptors
ErbB Receptors - metabolism
Experimental design
Extracellular Signal-Regulated MAP Kinases - metabolism
Female
Gene Expression
Glioblastoma
Glioma - drug therapy
Glioma - metabolism
Glioma - mortality
Glioma - pathology
Glioma cells
HSP90 Heat-Shock Proteins - antagonists & inhibitors
HSP90 Heat-Shock Proteins - genetics
HSP90 Heat-Shock Proteins - metabolism
Hsp90 protein
Humans
Inhibitors
Isoindoles - pharmacokinetics
Isoindoles - pharmacology
Medical research
Mice
Neoplastic Stem Cells - metabolism
Pharmacokinetics
Pharmacology
Protein Transport
Proteins
Proto-Oncogene Proteins c-akt - metabolism
Ribosomal Protein S6 Kinases - metabolism
Signal Transduction - drug effects
Signaling
Survival
Survival Rate
Temozolomide
Toxicity
Xenograft Model Antitumor Assays
Xenografts
Zebrafish
title Efficacy of Onalespib, a Long-Acting Second-Generation HSP90 Inhibitor, as a Single Agent and in Combination with Temozolomide against Malignant Gliomas
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