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Huang S, Ren L, Beck JA, Phelps TE, Olkowski C, Ton A, Roy J, White ME, Adler S, Wong K, Cherukuri A, Zhang X, Basuli F, Choyke PL, Jagoda EM, LeBlanc AK. Exploration of Imaging Biomarkers for Metabolically-Targeted Osteosarcoma Therapy in a Murine Xenograft Model. Cancer Biother Radiopharm 2023; 38:475-485. [PMID: 37253167 PMCID: PMC10623067 DOI: 10.1089/cbr.2022.0090] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
Background: Osteosarcoma (OS) is an aggressive pediatric cancer with unmet therapeutic needs. Glutaminase 1 (GLS1) inhibition, alone and in combination with metformin, disrupts the bioenergetic demands of tumor progression and metastasis, showing promise for clinical translation. Materials and Methods: Three positron emission tomography (PET) clinical imaging agents, [18F]fluoro-2-deoxy-2-D-glucose ([18F]FDG), 3'-[18F]fluoro-3'-deoxythymidine ([18F]FLT), and (2S, 4R)-4-[18F]fluoroglutamine ([18F]GLN), were evaluated in the MG63.3 human OS xenograft mouse model, as companion imaging biomarkers after treatment for 7 d with a selective GLS1 inhibitor (CB-839, telaglenastat) and metformin, alone and in combination. Imaging and biodistribution data were collected from tumors and reference tissues before and after treatment. Results: Drug treatment altered tumor uptake of all three PET agents. Relative [18F]FDG uptake decreased significantly after telaglenastat treatment, but not within control and metformin-only groups. [18F]FLT tumor uptake appears to be negatively affected by tumor size. Evidence of a flare effect was seen with [18F]FLT imaging after treatment. Telaglenastat had a broad influence on [18F]GLN uptake in tumor and normal tissues. Conclusions: Image-based tumor volume quantification is recommended for this paratibial tumor model. The performance of [18F]FLT and [18F]GLN was affected by tumor size. [18F]FDG may be useful in detecting telaglenastat's impact on glycolysis. Exploration of kinetic tracer uptake protocols is needed to define clinically relevant patterns of [18F]GLN uptake in patients receiving telaglenastat.
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Affiliation(s)
- Shan Huang
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Ling Ren
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Jessica A. Beck
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Tim E. Phelps
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Colleen Olkowski
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Anita Ton
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Jyoti Roy
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Margaret E. White
- Laboratory of Genitourinary Cancer Pathogenesis, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Stephen Adler
- Clinical Research Directorate, Frederick National Laboratory for Cancer Research sponsored by the National Cancer Institute, Bethesda, Maryland, USA
| | - Karen Wong
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Aswini Cherukuri
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Xiang Zhang
- Chemistry and Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Falguni Basuli
- Chemistry and Synthesis Center, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Peter L. Choyke
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Elaine M. Jagoda
- Molecular Imaging Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Amy K. LeBlanc
- Comparative Oncology Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
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Li C, Feng Y, Wang W, Xu L, Zhang M, Yao Y, Wu X, Zhang Q, Huang W, Wang X, Li X, Ying P, Shang L. Targeting Glutaminolysis to Treat Multiple Myeloma: An In Vitro Evaluation of Glutaminase Inhibitors Telaglenastat and Epigallocatechin-3-gallate. Anticancer Agents Med Chem 2023; 23:779-785. [PMID: 36065917 DOI: 10.2174/1871520622666220905142338] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 06/09/2022] [Revised: 07/17/2022] [Accepted: 07/29/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Cancer is associated with metabolic changes from increased cell proliferation and growth. Compared to normal differentiated cells, MM cells use the glycolytic pathway even when adequate oxygen is present triggering "Glutamine addiction". OBJECTIVE To investigate the single and combined effects of epigallocatechin-3-gallate (EGCG) and telaglenastat, a glutaminase inhibitor, on the proliferation and apoptosis of the multiple myeloma cell line KM3/BTZ. METHODS KM3/BTZ cells were treated with different concentrations of telaglenastat and EGCG alone or in combination to investigate their effect on proliferation and apoptosis using the CCK8 assay, flow cytometry, and western blotting. The Chou-Talalay combination index analysis was used to explore the effect of telaglenastat combined with EGCG, while the Combination Index (CI) was calculated to analyze whether the combination of the two drugs had a synergistic effect. RESULTS Telaglenastat and EGCG alone as well as in combination (5 μmol/L telaglenastat + 120 μmol/L EGCG) significantly inhibited the proliferation of KM3/BTZ cells compared to the inhibition effect of the control. Additionally, the combined treatment increased the proportion of KM3/BTZ cells in the G2 phase and decreased the proportion of cells in the G1 phase. The apoptosis rate of EGCG alone and the combined treatment was significantly higher than that of the control group. Bax protein expression was highest in the combined treatment group, whereas Bcl-2 expression was lowest, with the combined treatment group having the highest ratio of Bax/Bcl-2. CONCLUSION Telaglenastat and EGCG act synergistically to inhibit cell proliferation and promote apoptosis in KM3/BTZ cells, possibly by targeting glutamine metabolism and glycolysis.
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Affiliation(s)
- Chen Li
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
| | - Yuhu Feng
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
| | - Weiguo Wang
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
| | - Lingyun Xu
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
| | - Miao Zhang
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
| | - Yue Yao
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
| | - Xiaoqian Wu
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
| | - Qin Zhang
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
| | - Wenyue Huang
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
| | - Xiuxiu Wang
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
| | - Xue Li
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
| | - Peipei Ying
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
| | - Liu Shang
- Department of Hematology, Fuyang People's Hospital, (The Affiliated Fuyang People's Hospital of Anhui Medical University), NO.501, Sanqing Road, Fuyang City, Anhui Province 236000, China
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Lee CH, Motzer R, Emamekhoo H, Matrana M, Percent I, Hsieh JJ, Hussain A, Vaishampayan U, Liu S, McCune S, Patel V, Shaheen M, Bendell J, Fan AC, Gartrell BA, Goodman OB, Nikolinakos PG, Kalebasty AR, Zakharia Y, Zhang Z, Parmar H, Akella L, Orford K, Tannir NM. Telaglenastat plus Everolimus in Advanced Renal Cell Carcinoma: A Randomized, Double-Blinded, Placebo-Controlled, Phase II ENTRATA Trial. Clin Cancer Res 2022; 28:3248-3255. [PMID: 35576438 PMCID: PMC10202043 DOI: 10.1158/1078-0432.ccr-22-0061] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [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: 01/11/2022] [Revised: 03/11/2022] [Accepted: 05/11/2022] [Indexed: 11/16/2022]
Abstract
PURPOSE Glutaminase is a key enzyme, which supports elevated dependency of tumors on glutamine-dependent biosynthesis of metabolic intermediates. Dual targeting of glucose and glutamine metabolism by the mTOR inhibitor everolimus plus the oral glutaminase inhibitor telaglenastat showed preclinical synergistic anticancer effects, which translated to encouraging safety and efficacy findings in a phase I trial of 2L+ renal cell carcinoma (RCC). This study evaluated telaglenastat plus everolimus (TelaE) versus placebo plus everolimus (PboE) in patients with advanced/metastatic RCC (mRCC) in the 3L+ setting (NCT03163667). PATIENTS AND METHODS Eligible patients with mRCC, previously treated with at least two prior lines of therapy [including ≥1 VEGFR-targeted tyrosine kinase inhibitor (TKI)] were randomized 2:1 to receive E, plus Tela or Pbo, until disease progression or unacceptable toxicity. Primary endpoint was investigator-assessed progression-free survival (PFS; one-sided α <0.2). RESULTS Sixty-nine patients were randomized (46 TelaE, 23 PboE). Patients had a median three prior lines of therapy, including TKIs (100%) and checkpoint inhibitors (88%). At median follow-up of 7.5 months, median PFS was 3.8 months for TelaE versus 1.9 months for PboE [HR, 0.64; 95% confidence interval (CI), 0.34-1.20; one-sided P = 0.079]. One TelaE patient had a partial response and 26 had stable disease (SD). Eleven patients on PboE had SD. Treatment-emergent adverse events included fatigue, anemia, cough, dyspnea, elevated serum creatinine, and diarrhea; grade 3 to 4 events occurred in 74% TelaE patients versus 61% PboE. CONCLUSIONS TelaE was well tolerated and improved PFS versus PboE in patients with mRCC previously treated with TKIs and checkpoint inhibitors.
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Affiliation(s)
- Chung-Han Lee
- Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Robert Motzer
- Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - Hamid Emamekhoo
- University of Wisconsin Carbone Cancer Center, Madison, WI, USA
| | | | - Ivor Percent
- Florida Cancer Specialists – South, Fort Myers, FL, USA
| | - James J. Hsieh
- Washington University School of Medicine, St. Louis, MO, USA
| | - Arif Hussain
- University of Maryland Greenebaum Comprehensive Cancer Center, Baltimore, MD, USA
| | | | - Sandy Liu
- UCLA Department of Medicine, Los Angeles, CA, USA
| | | | - Vijay Patel
- Florida Cancer Specialists, St. Petersburg, FL
| | | | - Johanna Bendell
- Sarah Cannon Research Institute/Tennessee Oncology, Nashville, TN
| | - Alice C. Fan
- Stanford University School of Medicine, Department of Medicine, Division of Oncology, Stanford, CA
| | | | | | | | | | | | | | - Hema Parmar
- Calithera Biosciences, Inc., South San Francisco, CA, USA
| | - Lalith Akella
- Calithera Biosciences, Inc., South San Francisco, CA, USA
| | - Keith Orford
- Calithera Biosciences, Inc., South San Francisco, CA, USA
| | - Nizar M. Tannir
- The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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