1
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Ghochani Y, Muthukrishnan SD, Sohrabi A, Kawaguchi R, Condro MC, Bastola S, Gao F, Qin Y, Mottahedeh J, Iruela-Arispe ML, Rao N, Laks DR, Liau LM, Mathern GW, Goldman SA, Carmichael ST, Nakano I, Coppola G, Seidlits SK, Kornblum HI. A molecular interactome of the glioblastoma perivascular niche reveals integrin binding sialoprotein as a mediator of tumor cell migration. Cell Rep 2022; 41:111511. [PMID: 36261010 PMCID: PMC9642966 DOI: 10.1016/j.celrep.2022.111511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 06/22/2022] [Accepted: 09/26/2022] [Indexed: 12/01/2022] Open
Abstract
Glioblastoma (GBM) is characterized by extensive microvascular hyperproliferation. In addition to supplying blood to the tumor, GBM vessels also provide trophic support to glioma cells and serve as conduits for migration into the surrounding brain, promoting recurrence. Here, we enrich CD31-expressing glioma vascular cells (GVCs) and A2B5-expressing glioma tumor cells (GTCs) from primary GBM and use RNA sequencing to create a comprehensive molecular interaction map of the secreted and extracellular factors elaborated by GVCs that can interact with receptors and membrane molecules on GTCs. To validate our findings, we utilize functional assays, including a hydrogel-based migration assay and in vivo mouse models to demonstrate that one identified factor, the little-studied integrin binding sialoprotein (IBSP), enhances tumor growth and promotes the migration of GTCs along the vasculature. This perivascular niche interactome will serve as a resource to the research community in defining the potential functions of the GBM vasculature.
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Affiliation(s)
- Yasmin Ghochani
- Department of Psychiatry and the Semel Institute for Neuroscience and Behavior, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA; Department of Neurology, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - Sree Deepthi Muthukrishnan
- Department of Psychiatry and the Semel Institute for Neuroscience and Behavior, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - Alireza Sohrabi
- Department of Bioengineering, UCLA, 410 Westwood Plaza, Los Angeles, CA 90095, USA
| | - Riki Kawaguchi
- Department of Psychiatry and the Semel Institute for Neuroscience and Behavior, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA; Department of Neurology, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - Michael C Condro
- Department of Psychiatry and the Semel Institute for Neuroscience and Behavior, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - Soniya Bastola
- Department of Psychiatry and the Semel Institute for Neuroscience and Behavior, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA; Department of Bioengineering, UCLA, 410 Westwood Plaza, Los Angeles, CA 90095, USA
| | - Fuying Gao
- Department of Psychiatry and the Semel Institute for Neuroscience and Behavior, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA; Department of Neurology, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - Yue Qin
- Department of Psychiatry and the Semel Institute for Neuroscience and Behavior, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA; Department of Neurology, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - Jack Mottahedeh
- Department of Psychiatry and the Semel Institute for Neuroscience and Behavior, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - M Luisa Iruela-Arispe
- Department of Cell and Developmental Biology, Northwestern University, 303 E. Superior St. SQBRC 8-300, Chicago, IL 60611, USA
| | - Nagesh Rao
- Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - Dan R Laks
- Department of Psychiatry and the Semel Institute for Neuroscience and Behavior, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA; Voyager Therapeutics, 64 Sidney St., Cambridge, MA 02139, USA
| | - Linda M Liau
- Department of Neurosurgery, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - Gary W Mathern
- Department of Psychiatry and the Semel Institute for Neuroscience and Behavior, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA; Department of Neurosurgery, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - Steven A Goldman
- Center for Translational Neuromedicine, University of Rochester Medical Center and University of Copenhagen Faculty of Medical Sciences, 601 Elmwood Ave, Box 645, Rochester, NY 14642, USA
| | - S Thomas Carmichael
- Department of Neurology, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - Ichiro Nakano
- Research and Development Center for Precision Medicine, Tsukuba University, Tsukuba, Japan
| | - Giovanni Coppola
- Department of Psychiatry and the Semel Institute for Neuroscience and Behavior, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA
| | - Stephanie K Seidlits
- Department of Bioengineering, UCLA, 410 Westwood Plaza, Los Angeles, CA 90095, USA.
| | - Harley I Kornblum
- Department of Psychiatry and the Semel Institute for Neuroscience and Behavior, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA; Departments of Pediatrics and Pharmacology, David Geffen School of Medicine at UCLA, 635 Charles E. Young Drive South, Los Angeles, CA 90095, USA.
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2
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Alvarado AG, Tessema K, Muthukrishnan SD, Sober M, Kawaguchi R, Laks DR, Bhaduri A, Swarup V, Nathanson DA, Geschwind DH, Goldman SA, Kornblum HI. Pathway-based approach reveals differential sensitivity to E2F1 inhibition in glioblastoma. Cancer Res Commun 2022; 2:1049-1060. [PMID: 36213002 PMCID: PMC9536135 DOI: 10.1158/2767-9764.crc-22-0003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 06/02/2022] [Accepted: 08/22/2022] [Indexed: 12/14/2022]
Abstract
Analysis of tumor gene expression is an important approach for the classification and identification of therapeutic vulnerabilities. However, targeting glioblastoma (GBM) based on molecular subtyping has not yet translated into successful therapies. Here, we present an integrative approach based on molecular pathways to expose new potentially actionable targets. We used gene set enrichment analysis (GSEA) to conduct an unsupervised clustering analysis to condense the gene expression data from bulk patient samples and patient-derived gliomasphere lines into new gene signatures. We identified key targets that are predicted to be differentially activated between tumors and were functionally validated in a library of gliomasphere cultures. Resultant cluster-specific gene signatures associated not only with hallmarks of cell cycle and stemness gene expression, but also with cell-type specific markers and different cellular states of GBM. Several upstream regulators, such as PIK3R1 and EBF1 were differentially enriched in cells bearing stem cell like signatures and bear further investigation. We identified the transcription factor E2F1 as a key regulator of tumor cell proliferation and self-renewal in only a subset of gliomasphere cultures predicted to be E2F1 signaling dependent. Our in vivo work also validated the functional significance of E2F1 in tumor formation capacity in the predicted samples. E2F1 inhibition also differentially sensitized E2F1-dependent gliomasphere cultures to radiation treatment. Our findings indicate that this novel approach exploring cancer pathways highlights key therapeutic vulnerabilities for targeting GBM.
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Affiliation(s)
- Alvaro G. Alvarado
- Department of Psychiatry and Biobehavioral Sciences, and Semel Institute for Neuroscience & Human Behavior, David Geffen School of Medicine, UCLA, Los Angeles, California
| | - Kaleab Tessema
- Department of Psychiatry and Biobehavioral Sciences, and Semel Institute for Neuroscience & Human Behavior, David Geffen School of Medicine, UCLA, Los Angeles, California
| | - Sree Deepthi Muthukrishnan
- Department of Psychiatry and Biobehavioral Sciences, and Semel Institute for Neuroscience & Human Behavior, David Geffen School of Medicine, UCLA, Los Angeles, California
| | - Mackenzie Sober
- Department of Psychiatry and Biobehavioral Sciences, and Semel Institute for Neuroscience & Human Behavior, David Geffen School of Medicine, UCLA, Los Angeles, California
| | - Riki Kawaguchi
- Department of Psychiatry and Biobehavioral Sciences, and Semel Institute for Neuroscience & Human Behavior, David Geffen School of Medicine, UCLA, Los Angeles, California
| | - Dan R. Laks
- Voyager Therapeutics, Cambridge, Massachusetts
| | - Aparna Bhaduri
- Department of Biological Chemistry, David Geffen School of Medicine, UCLA, Los Angeles, California
| | - Vivek Swarup
- Department of Neurobiology and Behavior, School of Biological Sciences, UCI, Irvine, California
| | - David A. Nathanson
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, UCLA, Los Angeles, California
| | - Daniel H. Geschwind
- Department of Psychiatry and Biobehavioral Sciences, and Semel Institute for Neuroscience & Human Behavior, David Geffen School of Medicine, UCLA, Los Angeles, California
- Department of Neurology, David Geffen School of Medicine, UCLA, Los Angeles, California
| | - Steven A. Goldman
- Department of Neurology and the Center for Translational Neuromedicine, University of Rochester Medical Center, Rochester, New York
- The University of Copenhagen, Copenhagen, Denmark
| | - Harley I. Kornblum
- Department of Psychiatry and Biobehavioral Sciences, and Semel Institute for Neuroscience & Human Behavior, David Geffen School of Medicine, UCLA, Los Angeles, California
- Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, UCLA, Los Angeles, California
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3
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Xie XP, Laks DR, Sun D, Ganbold M, Wang Z, Pedraza AM, Bale T, Tabar V, Brennan C, Zhou X, Parada LF. Quiescent human glioblastoma cancer stem cells drive tumor initiation, expansion, and recurrence following chemotherapy. Dev Cell 2022; 57:32-46.e8. [PMID: 35016005 PMCID: PMC8820651 DOI: 10.1016/j.devcel.2021.12.007] [Citation(s) in RCA: 60] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 10/01/2021] [Accepted: 12/03/2021] [Indexed: 01/12/2023]
Abstract
We test the hypothesis that glioblastoma harbors quiescent cancer stem cells that evade anti-proliferative therapies. Functional characterization of spontaneous glioblastomas from genetically engineered mice reveals essential quiescent stem-like cells that can be directly isolated from tumors. A derived quiescent cancer-stem-cell-specific gene expression signature is enriched in pre-formed patient GBM xenograft single-cell clusters that lack proliferative gene expression. A refined human 118-gene signature is preserved in quiescent single-cell populations from primary and recurrent human glioblastomas. The F3 cell-surface receptor mRNA, expressed in the conserved signature, identifies quiescent tumor cells by antibody immunohistochemistry. F3-antibody-sorted glioblastoma cells exhibit stem cell gene expression, enhance self-renewal in culture, drive tumor initiation and serial transplantation, and reconstitute tumor heterogeneity. Upon chemotherapy, the spared cancer stem cell pool becomes activated and accelerates transition to proliferation. These results help explain conventional treatment failure and lay a conceptual framework for alternative therapies.
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Affiliation(s)
- Xuanhua P. Xie
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,These authors contributed equally,Correspondence: ,
| | - Dan R. Laks
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,These authors contributed equally,Present address: Voyager Therapeutics, Cambridge, MA 02139, USA
| | - Daochun Sun
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Present address: Medical College of Wisconsin, Wauwatosa, WI 53226, USA
| | - Mungunsarnai Ganbold
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Zilai Wang
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Present address: Chicago Biosolutions, Inc, Chicago, IL 60612, USA
| | - Alicia M. Pedraza
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Tejus Bale
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Department of Pathology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Viviane Tabar
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Cameron Brennan
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Department of Pathology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Xiuping Zhou
- Institute of Nervous System Diseases, Xuzhou Medical University, Jiangsu 221002, PR China
| | - Luis F. Parada
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA,Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.,Lead Contact,Correspondence: ,
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4
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Sun D, Xie XP, Zhang X, Wang Z, Sait SF, Iyer SV, Chen YJ, Brown R, Laks DR, Chipman ME, Shern JF, Parada LF. Stem-like cells drive NF1-associated MPNST functional heterogeneity and tumor progression. Cell Stem Cell 2021; 28:1397-1410.e4. [PMID: 34010628 PMCID: PMC8349880 DOI: 10.1016/j.stem.2021.04.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/18/2021] [Accepted: 04/26/2021] [Indexed: 12/15/2022]
Abstract
NF1-associated malignant peripheral nerve sheath tumors (MPNSTs) are the major cause of mortality in neurofibromatosis. MPNSTs arise from benign peripheral nerve plexiform neurofibromas that originate in the embryonic neural crest cell lineage. Using reporter transgenes that label early neural crest lineage cells in multiple NF1 MPNST mouse models, we discover and characterize a rare MPNST cell population with stem-cell-like properties, including quiescence, that is essential for tumor initiation and relapse. Following isolation of these cells, we derive a cancer-stem-cell-specific gene expression signature that includes consensus embryonic neural crest genes and identify Nestin as a marker for the MPNST cell of origin. Combined targeting of cancer stem cells along with antimitotic chemotherapy yields effective tumor inhibition and prolongs survival. Enrichment of the cancer stem cell signature in cognate human tumors supports the generality and relevance of cancer stem cells to MPNST therapy development.
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Affiliation(s)
- Daochun Sun
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA.
| | - Xuanhua P Xie
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Xiyuan Zhang
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Zilai Wang
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Sameer Farouk Sait
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Department of Pediatrics, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Swathi V Iyer
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Yu-Jung Chen
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Rebecca Brown
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Department of Neurology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Dan R Laks
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Mollie E Chipman
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Louis V. Gerstner, Jr. Graduate School of Biomedical Sciences, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Jack F Shern
- Pediatric Oncology Branch, Center for Cancer Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Luis F Parada
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Department of Neurology, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA.
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5
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Wang Z, Sun D, Chen YJ, Xie X, Shi Y, Tabar V, Brennan CW, Bale TA, Jayewickreme CD, Laks DR, Alcantara Llaguno S, Parada LF. Cell Lineage-Based Stratification for Glioblastoma. Cancer Cell 2020; 38:366-379.e8. [PMID: 32649888 PMCID: PMC7494533 DOI: 10.1016/j.ccell.2020.06.003] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/21/2020] [Accepted: 06/02/2020] [Indexed: 12/29/2022]
Abstract
Glioblastoma, the predominant adult malignant brain tumor, has been computationally classified into molecular subtypes whose functional relevance remains to be comprehensively established. Tumors from genetically engineered glioblastoma mouse models initiated by identical driver mutations in distinct cells of origin portray unique transcriptional profiles reflective of their respective lineage. Here, we identify corresponding transcriptional profiles in human glioblastoma and describe patient-derived xenografts with species-conserved subtype-discriminating functional properties. The oligodendrocyte lineage-associated glioblastoma subtype requires functional ERBB3 and harbors unique therapeutic sensitivities. These results highlight the importance of cell lineage in glioblastoma independent of driver mutations and provide a methodology for functional glioblastoma classification for future clinical investigations.
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Affiliation(s)
- Zilai Wang
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Daochun Sun
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Yu-Jung Chen
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Louis V. Gerstner, Jr. Graduate School of Biomedical Sciences, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Xuanhua Xie
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Yufeng Shi
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Viviane Tabar
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Cameron W Brennan
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Tejus A Bale
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Department of Pathology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Chenura D Jayewickreme
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Biochemistry, Cell and Molecular Biology Program, Weill Cornell Graduate School of Medical Sciences, Cornell University, New York, NY 10065, USA
| | - Dan R Laks
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Sheila Alcantara Llaguno
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Luis F Parada
- Brain Tumor Center, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Cancer Biology & Genetics Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA; Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA.
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6
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Laks DR, Oses-Prieto JA, Alvarado AG, Nakashima J, Chand S, Azzam DB, Gholkar AA, Sperry J, Ludwig K, Condro MC, Nazarian S, Cardenas A, Shih MYS, Damoiseaux R, France B, Orozco N, Visnyei K, Crisman TJ, Gao F, Torres JZ, Coppola G, Burlingame AL, Kornblum HI. A molecular cascade modulates MAP1B and confers resistance to mTOR inhibition in human glioblastoma. Neuro Oncol 2019; 20:764-775. [PMID: 29136244 DOI: 10.1093/neuonc/nox215] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Background Clinical trials of therapies directed against nodes of the signaling axis of phosphatidylinositol-3 kinase/Akt/mammalian target of rapamycin (mTOR) in glioblastoma (GBM) have had disappointing results. Resistance to mTOR inhibitors limits their efficacy. Methods To determine mechanisms of resistance to chronic mTOR inhibition, we performed tandem screens on patient-derived GBM cultures. Results An unbiased phosphoproteomic screen quantified phosphorylation changes associated with chronic exposure to the mTOR inhibitor rapamycin, and our analysis implicated a role for glycogen synthase kinase (GSK)3B attenuation in mediating resistance that was confirmed by functional studies. A targeted short hairpin RNA screen and further functional studies both in vitro and in vivo demonstrated that microtubule-associated protein (MAP)1B, previously associated predominantly with neurons, is a downstream effector of GSK3B-mediated resistance. Furthermore, we provide evidence that chronic rapamycin induces microtubule stability in a MAP1B-dependent manner in GBM cells. Additional experiments explicate a signaling pathway wherein combinatorial extracellular signal-regulated kinase (ERK)/mTOR targeting abrogates inhibitory phosphorylation of GSK3B, leads to phosphorylation of MAP1B, and confers sensitization. Conclusions These data portray a compensatory molecular signaling network that imparts resistance to chronic mTOR inhibition in primary, human GBM cell cultures and points toward new therapeutic strategies.
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Affiliation(s)
- Dan R Laks
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California
| | | | - Alvaro G Alvarado
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California
| | - Jonathan Nakashima
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California
| | - Shreya Chand
- Department of Pharmaceutical Chemistry, UCSF, San Francisco, California
| | - Daniel B Azzam
- Department of Neuroscience, UCLA, Los Angeles, California
| | | | | | - Kirsten Ludwig
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California
| | - Michael C Condro
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California
| | - Serli Nazarian
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California
| | - Anjelica Cardenas
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California
| | - Michelle Y S Shih
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California
| | | | - Bryan France
- Department of Molecular and Medical Pharmacology, UCLA
| | - Nicholas Orozco
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California
| | - Koppany Visnyei
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California
| | - Thomas J Crisman
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California
| | - Fuying Gao
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California
| | | | - Giovanni Coppola
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California.,Department of Neurology, UCLA, Los Angeles, California
| | - Alma L Burlingame
- Department of Pharmaceutical Chemistry, UCSF, San Francisco, California
| | - Harley I Kornblum
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, UCLA, Los Angeles, California.,Department of Molecular and Medical Pharmacology, UCLA.,Chemistry, UCLA, Los Angeles, California
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Xie XP, Laks DR, Sun D, Poran A, Laughney AM, Belenguer G, Massague J, Zhou X, Farinas I, Elemento O, Parada LF. Abstract 3015: Precise investigation of cancer stem cells in mouse glioblastoma. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-3015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
In this study, we employ mouse models to investigate features and roles of cancer stem cells (CSCs) in glioblastoma (GBM). A nestin-TK-GFP transgene is firstly used to label CSCs in a fully penetrant mouse model of GBM (M7: hGFAP-Cre; Nf1fl/+; p53fl/fl; Ptenfl/+). Food-mediated ganciclovir (GCV) delivery kills proliferative transgene positive cells and significantly prolongs the lives of the transgene bearing mice. Isolation and transplantation of the tumor cells indicates the GFP+ cells are more tumorigenic than the GFP- cells. We then generate and characterize a novel transgene (CGD: nestin-CreERT2-H2BeGFP-hDTR) that labels all the neural stem/progenitor cells in the subventricular zone (SVZ). This transgene efficiently promotes brain tumors by eliminating tumor suppressor genes (CGD-M4: CGD; Nf1fl/+; p53fl/+; Ptenfl/+) in the corresponding cells. The CGD-GFP+ tumor cells are quiescent in vivo, yet form more spheres in vitro than the GFP- cells. The GFP+ cells are competent to develop tumors in a serial transplantation assay and constantly maintain a quiescent subpopulation pool in the newly formed tumors. Diphtheria toxin treatment ablates the CGD-GFP+ tumor cells and greatly reduces the tumor bulk. Temozolomide, the conventional chemotherapy for human GBM patients, benefits only mice transplanted with GFP- but not CGD-GFP+ tumor cells. Our study demonstrates the essential role of CSCs in GBM initiation, recurrence, and drug resistance. Further analysis of the CGD-GFP+ cells might delineate novel treatments for this deadly disease.
Citation Format: Xuanhua P. Xie, Dan R. Laks, Daochun Sun, Asaf Poran, Ashley M. Laughney, German Belenguer, Joan Massague, Xiuping Zhou, Isabel Farinas, Olivier Elemento, Luis F. Parada. Precise investigation of cancer stem cells in mouse glioblastoma [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 3015.
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Affiliation(s)
| | - Dan R. Laks
- 1Memorial Sloan Kettering Cancer Center, New York, NY
| | - Daochun Sun
- 1Memorial Sloan Kettering Cancer Center, New York, NY
| | | | | | | | - Joan Massague
- 1Memorial Sloan Kettering Cancer Center, New York, NY
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Crisman TJ, Zelaya I, Laks DR, Zhao Y, Kawaguchi R, Gao F, Kornblum HI, Coppola G. Identification of an Efficient Gene Expression Panel for Glioblastoma Classification. PLoS One 2016; 11:e0164649. [PMID: 27855170 PMCID: PMC5113897 DOI: 10.1371/journal.pone.0164649] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 09/28/2016] [Indexed: 11/21/2022] Open
Abstract
We present here a novel genetic algorithm-based random forest (GARF) modeling technique that enables a reduction in the complexity of large gene disease signatures to highly accurate, greatly simplified gene panels. When applied to 803 glioblastoma multiforme samples, this method allowed the 840-gene Verhaak et al. gene panel (the standard in the field) to be reduced to a 48-gene classifier, while retaining 90.91% classification accuracy, and outperforming the best available alternative methods. Additionally, using this approach we produced a 32-gene panel which allows for better consistency between RNA-seq and microarray-based classifications, improving cross-platform classification retention from 69.67% to 86.07%. A webpage producing these classifications is available at http://simplegbm.semel.ucla.edu.
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Affiliation(s)
- Thomas J. Crisman
- Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, California 90095, United States of America
| | - Ivette Zelaya
- Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, California 90095, United States of America
| | - Dan R. Laks
- Department of Biological Chemistry, University of California Los Angeles, Los Angeles, California 90095, United States of America
| | - Yining Zhao
- Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, California 90095, United States of America
| | - Riki Kawaguchi
- Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, California 90095, United States of America
| | - Fuying Gao
- Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, California 90095, United States of America
| | - Harley I. Kornblum
- Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, California 90095, United States of America
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California Los Angeles, Los Angeles, California 90095, United States of America
- Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, California 90095, United States of America
| | - Giovanni Coppola
- Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, University of California Los Angeles, Los Angeles, California 90095, United States of America
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Laks DR, Crisman TJ, Shih MYS, Mottahedeh J, Gao F, Sperry J, Garrett MC, Yong WH, Cloughesy TF, Liau LM, Lai A, Coppola G, Kornblum HI. Large-scale assessment of the gliomasphere model system. Neuro Oncol 2016; 18:1367-78. [PMID: 27116978 DOI: 10.1093/neuonc/now045] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 02/18/2016] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Gliomasphere cultures are widely utilized for the study of glioblastoma (GBM). However, this model system is not well characterized, and the utility of current classification methods is not clear. METHODS We used 71 gliomasphere cultures from 68 individuals. Using gene expression-based classification, we performed unsupervised clustering and associated gene expression with gliomasphere phenotypes and patient survival. RESULTS Some aspects of the gene expression-based classification method were robust because the gliomasphere cultures retained their classification over many passages, and IDH1 mutant gliomaspheres were all proneural. While gene expression of a subset of gliomasphere cultures was more like the parent tumor than any other tumor, gliomaspheres did not always harbor the same classification as their parent tumor. Classification was not associated with whether a sphere culture was derived from primary or recurrent GBM or associated with the presence of EGFR amplification or rearrangement. Unsupervised clustering of gliomasphere gene expression distinguished 2 general categories (mesenchymal and nonmesenchymal), while multidimensional scaling distinguished 3 main groups and a fourth minor group. Unbiased approaches revealed that PI3Kinase, protein kinase A, mTOR, ERK, Integrin, and beta-catenin pathways were associated with in vitro measures of proliferation and sphere formation. Associating gene expression with gliomasphere phenotypes and patient outcome, we identified genes not previously associated with GBM: PTGR1, which suppresses proliferation, and EFEMP2 and LGALS8, which promote cell proliferation. CONCLUSIONS This comprehensive assessment reveals advantages and limitations of using gliomaspheres to model GBM biology, and provides a novel strategy for selecting genes for future study.
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Affiliation(s)
- Dan R Laks
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
| | - Thomas J Crisman
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
| | - Michelle Y S Shih
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
| | - Jack Mottahedeh
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
| | - Fuying Gao
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
| | - Jantzen Sperry
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
| | - Matthew C Garrett
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
| | - William H Yong
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
| | - Timothy F Cloughesy
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
| | - Linda M Liau
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
| | - Albert Lai
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
| | - Giovanni Coppola
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
| | - Harley I Kornblum
- Department of Biological Chemistry, University of California, Los Angeles, California (D.R.L.); Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California, Los Angeles, California (T.J.C., M.Y.S.S., J.M., F.G., M.C.G., G.C., H.I.K.); Department of Pharmacology, University of California, Los Angeles, California (J.S.); Department of Pathology, University of California, Los Angeles, California (W.H.Y.); Department of Neurology, University of California, Los Angeles, California (T.F.C., A.L., G.C.); Department of Neurosurgery, University of California, Los Angeles, California (L.M.L.); Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, California (H.I.K.); The Jonsson Comprehensive Cancer Center, University of California, Los Angeles, California (W.H.Y., T.F.C., L.M.L., A.L., H.I.K.)
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Laks DR, Ta L, Crisman TJ, Gao F, Coppola G, Radu CG, Nathanson DA, Kornblum HI. Inhibition of Nucleotide Synthesis Targets Brain Tumor Stem Cells in a Subset of Glioblastoma. Mol Cancer Ther 2016; 15:1271-8. [PMID: 27196770 DOI: 10.1158/1535-7163.mct-15-0982] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 03/06/2016] [Indexed: 11/16/2022]
Abstract
Inhibition of both the de novo (DNP) and salvage (NSP) pathways of nucleoside synthesis has been demonstrated to impair leukemia cells. We endeavored to determine whether this approach would be efficacious in glioblastoma. To diminish nucleoside biosynthesis, we utilized compound DI-39, which selectively targets NSP, in combination with thymidine (dT), which selectively targets DNP. We employed in vitro and ex vivo models to determine the effects of pretreatment with dT + DI-39 on brain tumor stem cells (BTSC). Here, we demonstrate that this combinatorial therapy elicits a differential response across a spectrum of human patient-derived glioblastoma cultures. As determined by apoptotic markers, most cultures were relatively resistant to treatment, although a subset was highly sensitive. Sensitivity was unrelated to S-phase delay and to DNA damage induced by treatment. Bioinformatics analysis indicated that response across cultures was associated with the transcription factor PAX3 (associated with resistance) and with canonical pathways, including the nucleotide excision repair pathway, PTEN (associated with resistance), PI3K/AKT (associated with sensitivity), and ErbB2-ErbB3. Our in vitro assays demonstrated that, in sensitive cultures, clonal sphere formation was reduced upon removal from pretreatment. In contrast, in a resistant culture, clonal sphere formation was slightly increased upon removal from pretreatment. Moreover, in an intracranial xenograft model, pretreatment of a sensitive culture caused significantly smaller and fewer tumors. In a resistant culture, tumors were equivalent irrespective of pretreatment. These results indicate that, in the subset of sensitive glioblastoma, BTSCs are targeted by inhibition of pyrimidine synthesis. Mol Cancer Ther; 15(6); 1271-8. ©2016 AACR.
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Affiliation(s)
- Dan R Laks
- Department of Biological Chemistry, University of California Los Angeles, Los Angeles, California. Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California Los Angeles, Los Angeles, California
| | - Lisa Ta
- Department of Molecular and Medical Pharmacology, University of California Los Angeles, Los Angeles, California
| | - Thomas J Crisman
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California Los Angeles, Los Angeles, California
| | - Fuying Gao
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California Los Angeles, Los Angeles, California
| | - Giovanni Coppola
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California Los Angeles, Los Angeles, California
| | - Caius G Radu
- Department of Molecular and Medical Pharmacology, University of California Los Angeles, Los Angeles, California.
| | - David A Nathanson
- Department of Molecular and Medical Pharmacology, University of California Los Angeles, Los Angeles, California.
| | - Harley I Kornblum
- Department of Psychiatry and Biobehavioral Sciences and Semel Institute for Neuroscience & Human Behavior, University of California Los Angeles, Los Angeles, California. Department of Molecular and Medical Pharmacology, University of California Los Angeles, Los Angeles, California. Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California Los Angeles, Los Angeles, California. The Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, California.
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11
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Dufault R, Berg Z, Crider R, Schnoll R, Wetsit L, Bulls WT, Gilbert SG, Kingston HMS, Wolle MM, Rahman GMM, Laks DR. Blood inorganic mercury is directly associated with glucose levels in the human population and may be linked to processed food intake. ACTA ACUST UNITED AC 2015; 2. [PMID: 33889422 PMCID: PMC8059611 DOI: 10.15761/imm.1000134] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Background: The goals of the study were (1) to determine the impact of inorganic mercury exposure on glucose homeostasis; and (2) to evaluate the effectiveness of two community-based interventions in promoting dietary changes among American Indian college students to reduce risk factors for Type-2 Diabetes including fasting glucose, insulin, and mercury levels, weight, and body mass index. Methods: To accomplish goal one, the National Health and Nutrition Examination Survey (NHANES) dataset was analyzed using a previously published method to determine if there is a relationship between inorganic blood mercury and fasting glucose. To accomplish goal two, ten college students were recruited and randomly assigned to a group receiving the online macroepigenetics nutrition course and the support group for eliminating corn sweeteners. Participants in both groups were assessed for diet patterns, weight, body mass index (BMI), fasting glucose, insulin, and mercury levels. The interventions were implemented over a 10-week period. Results: Analysis of the NHANES data (n=16,232) determined a direct relationship between inorganic mercury in blood and fasting glucose levels (p<0.001). The participants who took the online macroepigenetics nutrition intervention course significantly improved their diets (p<0.01), and fasting blood glucose levels (p<0.01) while having lower levels of inorganic mercury in their blood compared to the subjects in the group who eliminated corn sweeteners from their diet and participated in the support group. The trend in lower blood inorganic mercury was strong with p=0.052. The participants in the support group who eliminated corn sweeteners from their diet achieved significant weight loss (p<0.01) and reduced their body mass index (p<0.01). Conclusion: Total blood mercury levels may be influenced by dietary intake of highly processed foods and lower inorganic mercury levels are associated with lower fasting glucose levels. Alternative community-based interventions emphasizing the role food ingredients and toxic substances play in gene modulation and the development of diseases can result in significant dietary improvements and reductions in risk factors associated with type-2 diabetes. A healthier diet can be promoted among community members using a novel online nutrition course. Consumption of corn sweeteners may be a risk factor in the development of obesity.
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Affiliation(s)
- Renee Dufault
- Food Ingredient and Health Research Institute, Naalehu, Hawaii, USA.,Fort Peck Community College, Poplar, Montana, USA
| | - Zara Berg
- Fort Peck Community College, Poplar, Montana, USA
| | - Raquel Crider
- Food Ingredient and Health Research Institute, Naalehu, Hawaii, USA.,Shepherd University, Shepherdstown, West Virginia, USA
| | - Roseanne Schnoll
- Food Ingredient and Health Research Institute, Naalehu, Hawaii, USA.,Department of Health and Nutrition Sciences, Brooklyn College of City University of New York, Brooklyn, New York, USA
| | - Larry Wetsit
- Fort Peck Community College, Poplar, Montana, USA
| | | | - Steven G Gilbert
- Food Ingredient and Health Research Institute, Naalehu, Hawaii, USA.,Institute of Neurotoxicology and Neurological Disorders, Seattle, Washington, USA
| | - H M Skip Kingston
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
| | - Mesay Mulugeta Wolle
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
| | - G M Mizanur Rahman
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania, USA
| | - Dan R Laks
- Department of Biological Chemistry, University of California Los Angeles (UCLA), Los Angeles, California, USA
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12
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Le Belle JE, Sperry J, Ngo A, Ghochani Y, Laks DR, López-Aranda M, Silva AJ, Kornblum HI. Maternal inflammation contributes to brain overgrowth and autism-associated behaviors through altered redox signaling in stem and progenitor cells. Stem Cell Reports 2014; 3:725-34. [PMID: 25418720 PMCID: PMC4235743 DOI: 10.1016/j.stemcr.2014.09.004] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 09/08/2014] [Accepted: 09/08/2014] [Indexed: 11/25/2022] Open
Abstract
A period of mild brain overgrowth with an unknown etiology has been identified as one of the most common phenotypes in autism. Here, we test the hypothesis that maternal inflammation during critical periods of embryonic development can cause brain overgrowth and autism-associated behaviors as a result of altered neural stem cell function. Pregnant mice treated with low-dose lipopolysaccharide at embryonic day 9 had offspring with brain overgrowth, with a more pronounced effect in PTEN heterozygotes. Exposure to maternal inflammation also enhanced NADPH oxidase (NOX)-PI3K pathway signaling, stimulated the hyperproliferation of neural stem and progenitor cells, increased forebrain microglia, and produced abnormal autism-associated behaviors in affected pups. Our evidence supports the idea that a prenatal neuroinflammatory dysregulation in neural stem cell redox signaling can act in concert with underlying genetic susceptibilities to affect cellular responses to environmentally altered cellular levels of reactive oxygen species. Mild maternal inflammation produces brain overgrowth and autistic behaviors in pups Maternal inflammation increases stem cell division, ROS levels, and PI3K activation Genetic susceptibility produces even greater brain overgrowth when combined with MIR Overgrowth and some associated abnormal behaviors can be rescued by inhibition of NOX
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Affiliation(s)
- Janel E Le Belle
- NPI-Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jantzen Sperry
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Amy Ngo
- NPI-Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Yasmin Ghochani
- The Molecular Biology Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Dan R Laks
- NPI-Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Biological Chemistry, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Manuel López-Aranda
- NPI-Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Integrative Center for Learning and Memory and Brain Research Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Alcino J Silva
- NPI-Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Integrative Center for Learning and Memory and Brain Research Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Harley I Kornblum
- NPI-Semel Institute for Neuroscience & Human Behavior and Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Molecular and Medical Pharmacology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; The Molecular Biology Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA; The Jonsson Comprehensive Cancer Center, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA.
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13
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Panosyan EH, Wang Y, Xia P, Lee WNP, Pak Y, Laks DR, Lin HJ, Moore TB, Cloughesy TF, Kornblum HI, Lasky JL. Asparagine depletion potentiates the cytotoxic effect of chemotherapy against brain tumors. Mol Cancer Res 2014; 12:694-702. [PMID: 24505127 DOI: 10.1158/1541-7786.mcr-13-0576] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
UNLABELLED Targeting amino acid metabolism has therapeutic implications for aggressive brain tumors. Asparagine is an amino acid that is synthesized by normal cells. However, some cancer cells lack asparagine synthetase (ASNS), the key enzyme for asparagine synthesis. Asparaginase (ASNase) contributes to eradication of acute leukemia by decreasing asparagine levels in serum and cerebrospinal fluid. However, leukemic cells may become ASNase-resistant by upregulating ASNS. High expression of ASNS has also been associated with biologic aggressiveness of other cancers, including gliomas. Here, the impact of enzymatic depletion of asparagine on proliferation of brain tumor cells was determined. ASNase was used as monotherapy or in combination with conventional chemotherapeutic agents. Viability assays for ASNase-treated cells demonstrated significant growth reduction in multiple cell lines. This effect was reversed by glutamine in a dose-dependent manner--as expected, because glutamine is the main amino group donor for asparagine synthesis. ASNase treatment also reduced sphere formation by medulloblastoma and primary glioblastoma cells. ASNase-resistant glioblastoma cells exhibited elevated levels of ASNS mRNA. ASNase cotreatment significantly enhanced gemcitabine or etoposide cytotoxicity against glioblastoma cells. Xenograft tumors in vivo showed no significant response to ASNase monotherapy and little response to temozolomide alone. However, combinatorial therapy with ASNase and temozolomide resulted in significant growth suppression for an extended duration of time. Taken together, these findings indicate that amino acid depletion warrants further investigation as adjunctive therapy for brain tumors. IMPLICATIONS Findings have potential impact for providing adjuvant means to enhance brain tumor chemotherapy.
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Affiliation(s)
- Eduard H Panosyan
- Authors' Affiliations: Department of Pediatrics, Los Angeles Biomedical Research Institute, Harbor-UCLA Medical Center, Torrance; Departments of 2Psychiatry and Molecular and Medical Pharmacology and 3Pediatrics; and 4The Jonsson Comprehensive Cancer Center, University of California Los Angeles (UCLA), Los Angeles, California
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14
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Affiliation(s)
- Dan R Laks
- Department of Biological Chemistry, UCLA, 379 Neuroscience Research Bldg, Suite 379, 635 Charles E. Young Drive South, Los Angeles, CA, 90095-7332, USA,
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15
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Nakano I, Joshi K, Visnyei K, Hu B, Watanabe M, Lam D, Wexler E, Saigusa K, Nakamura Y, Laks DR, Mischel PS, Viapiano M, Kornblum HI. Siomycin A targets brain tumor stem cells partially through a MELK-mediated pathway. Neuro Oncol 2011; 13:622-34. [PMID: 21558073 DOI: 10.1093/neuonc/nor023] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Glioblastoma multiforme (GBM) is a devastating disease, and the current therapies have only palliative effect. Evidence is mounting to indicate that brain tumor stem cells (BTSCs) are a minority of tumor cells that are responsible for cancer initiation, propagation, and maintenance. Therapies that fail to eradicate BTSCs may ultimately lead to regrowth of residual BTSCs. However, BTSCs are relatively resistant to the current treatments. Development of novel therapeutic strategies that effectively eradicate BTSC are, therefore, essential. In a previous study, we used patient-derived GBM sphere cells (stemlike GBM cells) to enrich for BTSC and identified maternal embryonic leucine-zipper kinase (MELK) as a key regulator of survival of stemlike GBM cells in vitro. Here, we demonstrate that a thiazole antibiotic, siomycin A, potently reduced MELK expression and inhibited tumor growth in vivo. Treatment of stemlike GBM cells with siomycin A resulted in arrested self-renewal, decreased invasion, and induced apoptosis but had little effect on growth of the nonstem cells of matched tumors or normal neural stem/progenitor cells. MELK overexpression partially rescued the phenotype of siomycin A-treated stemlike GBM cells. In vivo, siomycin A pretreatment abraded the sizes of stemlike GBM cell-derived tumors in immunodeficient mice. Treatment with siomycin A of mice harboring intracranial tumors significantly prolonged their survival period compared with the control mice. Together, this study may be the first model to partially target stemlike GBM cells through a MELK-mediated pathway with siomycin A to pave the way for effective treatment of GBM.
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Affiliation(s)
- Ichiro Nakano
- Department of Neurological Surgery, James Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA.
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16
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Panosyan EH, Laks DR, Masterman-Smith M, Mottahedeh J, Yong WH, Cloughesy TF, Lazareff JA, Mischel PS, Moore TB, Kornblum HI. Clinical outcome in pediatric glial and embryonal brain tumors correlates with in vitro multi-passageable neurosphere formation. Pediatr Blood Cancer 2010; 55:644-51. [PMID: 20589659 PMCID: PMC4017922 DOI: 10.1002/pbc.22627] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Cultured brain tumors can form neurospheres harboring tumorigenic cells with self renewal and differentiation capacities. Renewable neurosphere formation has clinical predictive value in adult malignant gliomas, yet its prognostic role for pediatric brain tumors is unknown. METHODS Established neurosphere conditions were used for culturing samples from glial, embryonal and mixed glioneuronal tumors from 56 pediatric patients. Potential associations between neurosphere formation and clinical outcome were analyzed retrospectively. RESULTS Thirty-seven percent of all samples formed renewable neurospheres. Analysis of available clinical outcome data from 51 patients demonstrated significantly increased hazard ratios (HR) for both disease progression (HR = 9.9, P < 0.001) and death (HR = 16.6, P < 0.01) in the neurosphere forming group. Furthermore, neurosphere formation correlated with adverse progression free survival (PFS) in glial and embryonal tumors, but not in mixed glioneuronal tumors. Overall survival (OS) was significantly worse for neurosphere-forming patients with embryonal tumors, as a group and amongst the subgroup with medulloblastoma, but not in the glial group. Multivariate analysis showed that neurosphere formation was associated with diminished PFS and OS independent of age, gender, or treatment. Neurosphere formation was an independent predictor of diminished PFS of glial tumors after adjusting for grade. Multivariate analysis, adjusting for both Ki67 staining and neurosphere formation, demonstrated that neurosphere formation remained predictive of progression whereas Ki67 did not. CONCLUSIONS Neurosphere formation is more predictive of pediatric brain tumor progression than semi-quantitative Ki67 staining. Pediatric brain tumor derived neurospheres may provide a predictive model for preclinical explorations.
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Affiliation(s)
- Eduard H. Panosyan
- Department of Pediatrics, University of California Los Angeles (UCLA), Los Angeles, California
| | - Dan R. Laks
- Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, California,Department of Psychiatry, UCLA, Los Angeles, California
| | - Michael Masterman-Smith
- Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, California,Department of Psychiatry, UCLA, Los Angeles, California
| | - Jack Mottahedeh
- Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, California,Department of Psychiatry, UCLA, Los Angeles, California
| | - William H. Yong
- Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, California,The Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | | | - Jorge A. Lazareff
- The Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California,Department of Neurosurgery, UCLA, Los Angeles, California
| | - Paul S. Mischel
- Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, California,Department of Pathology and Laboratory Medicine, UCLA, Los Angeles, California,The Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Theodore B. Moore
- Department of Pediatrics, University of California Los Angeles (UCLA), Los Angeles, California,The Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California
| | - Harley I. Kornblum
- Department of Pediatrics, University of California Los Angeles (UCLA), Los Angeles, California,Department of Molecular and Medical Pharmacology, UCLA, Los Angeles, California,The Jonsson Comprehensive Cancer Center, UCLA, Los Angeles, California,The Intellectual and Developmental Disabilities Research Center, UCLA, Los Angeles, California,Correspondence to: Harley I. Kornblum, Departments of Psychiatry, Pharmacology, and Pediatrics, David Geffen School of Medicine at UCLA, Neuroscience Research Center, Suite 379, 635 Charles E. Young Dr. South, Los Angeles, CA 90095.
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17
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Sun J, Masterman-Smith MD, Graham NA, Jiao J, Mottahedeh J, Laks DR, Ohashi M, DeJesus J, Kamei KI, Lee KB, Wang H, Yu ZTF, Lu YT, Hou S, Li K, Liu M, Zhang N, Wang S, Angenieux B, Panosyan E, Samuels ER, Park J, Williams D, Konkankit V, Nathanson D, van Dam RM, Phelps ME, Wu H, Liau LM, Mischel PS, Lazareff JA, Kornblum HI, Yong WH, Graeber TG, Tseng HR. A microfluidic platform for systems pathology: multiparameter single-cell signaling measurements of clinical brain tumor specimens. Cancer Res 2010; 70:6128-38. [PMID: 20631065 DOI: 10.1158/0008-5472.can-10-0076] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The clinical practice of oncology is being transformed by molecular diagnostics that will enable predictive and personalized medicine. Current technologies for quantitation of the cancer proteome are either qualitative (e.g., immunohistochemistry) or require large sample sizes (e.g., flow cytometry). Here, we report a microfluidic platform-microfluidic image cytometry (MIC)-capable of quantitative, single-cell proteomic analysis of multiple signaling molecules using only 1,000 to 2,800 cells. Using cultured cell lines, we show simultaneous measurement of four critical signaling proteins (EGFR, PTEN, phospho-Akt, and phospho-S6) within the oncogenic phosphoinositide 3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) signaling pathway. To show the clinical application of the MIC platform to solid tumors, we analyzed a panel of 19 human brain tumor biopsies, including glioblastomas. Our MIC measurements were validated by clinical immunohistochemistry and confirmed the striking intertumoral and intratumoral heterogeneity characteristic of glioblastoma. To interpret the multiparameter, single-cell MIC measurements, we adapted bioinformatic methods including self-organizing maps that stratify patients into clusters that predict tumor progression and patient survival. Together with bioinformatic analysis, the MIC platform represents a robust, enabling in vitro molecular diagnostic technology for systems pathology analysis and personalized medicine.
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Affiliation(s)
- Jing Sun
- Crump Institute for Molecular Imaging, University of California at Los Angeles, Los Angeles, California 90095, USA
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18
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Abstract
Previous studies have demonstrated that the pituitary is a main target for inorganic mercury (I-Hg) deposition and accumulation within the brain. My recent study of the US population (1999-2006) has uncovered a significant, inverse relationship between chronic mercury exposure and levels of luteinizing hormone (LH). This association with LH signifies more than its presumed role as bioindicator for pituitary neurosecretion and function. LH is the only hormone with a rare and well characterized, high affinity binding site for mercury. On its catalytic beta subunit, LH has the structure to preferentially bind inorganic mercury almost irreversibly, and, by that manner, accumulate the neurotoxic element. Thus, it is likely that LH is an early and significant target of chronic mercury exposure. Moreover, due to the role of LH in immune-modulation and neurogenesis, I present LH as a central candidate to elucidate a causal mechanism for chronic mercury exposure and associated disease.
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Affiliation(s)
- Dan R Laks
- Mental Retardation Research Center, David Geffen School of Medicine at UCLA, 635 Charles E. Young Dr. South, Neuroscience Research Building, Los Angeles, CA 90095-7332, USA.
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19
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Laks DR, Masterman-Smith M, Visnyei K, Angenieux B, Orozco NM, Foran I, Yong WH, Vinters HV, Liau LM, Lazareff JA, Mischel PS, Cloughesy TF, Horvath S, Kornblum HI. Neurosphere formation is an independent predictor of clinical outcome in malignant glioma. Stem Cells 2009; 27:980-7. [PMID: 19353526 DOI: 10.1002/stem.15] [Citation(s) in RCA: 191] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Renewable neurosphere formation in culture is a defining characteristic of certain brain tumor initiating cells. This retrospective study was designed to assess the relationship among neurosphere formation in cultured human glioma, tumorigenic capacity, and patient clinical outcome. Tumor samples were cultured in neurosphere conditions from 32 patients with glioma, including a subpopulation of 15 patients with primary glioblastoma. A subsample of renewable neurosphere cultures was xenografted into mouse brain to determine if they were tumorigenic. Our study shows that both renewable neurosphere formation and tumorigenic capacity are significantly associated with clinical outcome measures. Renewable neurosphere formation in cultured human glioma significantly predicted an increased hazard of patient death and more rapid tumor progression. These results pertained to both the full population of glioma and the subpopulation of primary glioblastoma. Similarly, there was a significant hazard of progression for patients whose glioma had tumorigenic capacity. Multivariate analysis demonstrated that neurosphere formation remained a significant predictor of clinical outcome independent of Ki67 proliferation index. In addition, multivariate analysis of neurosphere formation, tumor grade and patient age, demonstrated that neurosphere formation was a robust, independent predictor of glioma tumor progression. Although the lengthy duration of this assay may preclude direct clinical application, these results exemplify how neurosphere culture serves as a clinically relevant model for the study of malignant glioma. Furthermore, this study suggests that the ability to propagate brain tumor stem cells in vitro is associated with clinical outcome.
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Affiliation(s)
- Dan R Laks
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at UCLA, Los Angeles, California 90095, USA
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20
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Abstract
The verbal interaction of 2-year-old children (N = 46; 16 girls, 30 boys) and their mothers was audiotaped, transcribed, and analyzed for the use of personal pronouns, the total number of utterances, the child's mean length of utterance, and the mother's responsiveness to her child's utterances. Mothers' use of the personal pronoun we was significantly related to their children's performance on the Stanford-Binet at age 5 and the Wechsler Intelligence Scale for Children at age 8. Mothers' use of we in social--vocal interchange, indicating a system for establishing a shared relationship with the child, was closely connected with their verbal responsiveness to their children. The total amount of maternal talking, the number of personal pronouns used by mothers, and their verbal responsiveness to their children were not related to mothers' social class or years of education.
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Affiliation(s)
- D R Laks
- Department of Pediatrics, School of Medicine, University of California, Los Angeles 90024-1752
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