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Gonzalez C, Williamson S, Gammon ST, Glazer S, Rhee JH, Piwnica-Worms D. TLR5 agonists enhance anti-tumor immunity and overcome resistance to immune checkpoint therapy. Commun Biol 2023; 6:31. [PMID: 36635337 PMCID: PMC9837180 DOI: 10.1038/s42003-022-04403-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 12/23/2022] [Indexed: 01/14/2023] Open
Abstract
Primary and adaptive resistance to immune checkpoint therapies (ICT) represent a considerable obstacle to achieving enhanced overall survival. Innate immune activators have been actively pursued for their antitumor potential. Herein we report that a syngeneic 4T1 mammary carcinoma murine model for established highly-refractory triple negative breast cancer showed enhanced survival when treated intra-tumorally with either the TLR5 agonist flagellin or CBLB502, a flagellin derivative, in combination with antibodies targeting CTLA-4 and PD-1. Long-term survivor mice showed immunologic memory upon tumor re-challenge and a distinctive immune activating cytokine profile that engaged both innate and adaptive immunity. Low serum levels of G-CSF and CXCL5 (as well as high IL-15) were candidate predictive biomarkers correlating with enhanced survival. CBLB502-induced enhancement of ICT was also observed in poorly immunogenic B16-F10 melanoma tumors. Combination immune checkpoint therapy plus TLR5 agonists may offer a new therapeutic strategy to treat ICT-refractory solid tumors.
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Affiliation(s)
- Caleb Gonzalez
- grid.240145.60000 0001 2291 4776Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
| | - Sarah Williamson
- grid.240145.60000 0001 2291 4776Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
| | - Seth T. Gammon
- grid.240145.60000 0001 2291 4776Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
| | - Sarah Glazer
- grid.240145.60000 0001 2291 4776Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
| | - Joon Haeng Rhee
- grid.14005.300000 0001 0356 9399Chonnam National University Medical School, Gwangju, South Korea
| | - David Piwnica-Worms
- grid.240145.60000 0001 2291 4776Department of Cancer Systems Imaging, University of Texas MD Anderson Cancer Center, Houston, TX 77030 USA
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Joshi A, Butle A, Hait S, Mishra R, Trivedi V, Thorat R, Choughule A, Noronha V, Prabhash K, Dutt A. Osimertinib for lung cancer cells harboring low-frequency EGFR T790M mutation. Transl Oncol 2022; 22:101461. [PMID: 35653897 PMCID: PMC9156817 DOI: 10.1016/j.tranon.2022.101461] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 05/17/2022] [Accepted: 05/18/2022] [Indexed: 12/25/2022] Open
Abstract
Osimertinib, a third-generation EGFR tyrosine kinase inhibitor, shows significant benefit among patients with EGFR T790M mutation at disease progression. We analyzed the whole exome sequence of 48 samples obtained from 16 lung cancer patients with a longitudinal follow-up: treatment-naïve-baseline primary tumors positive for EGFR activating-mutations, paired re-biopsies upon disease progression but negative for EGFR T790M mutation based on qPCR, and their matched normal blood samples. Our Next generation sequencing (NGS) analysis identified an additional set of 25% re-biopsy samples to harbor EGFR T790M mutation occurring at a low-allele frequency of 5% or less, undetectable by conventional qPCR-based assays. Notably, the clinical utility of osimertinib among patients harboring low-allele frequency of EGFR T790M in tissue biopsy upon disease progression remains less explored. We established erlotinib-resistant PC-9R cells and twenty single-cell sub-clones from erlotinib-sensitive lung cancer PC-9 cells using in vitro drug-escalation protocol. NGS and allele-specific PCR confirmed the low-allele frequency of EGFR T790M present at 5% with a 100-fold higher resistance to erlotinib in the PC-9R cells and its sub-clones. Additionally, luciferase tagged PC-9, and PC-9R cells were orthotopically injected through the intercostal muscle into NOD-SCID mice. The orthotopic lung tumors formed were observed by non-invasive bioluminescence imaging. Consistent with in vitro data, osimertinib, but not erlotinib, caused tumor regression in mice injected with PC-9R cells, while both osimertinib and erlotinib inhibited tumors in mice injected with PC-9 cells. Taken together, our findings could extend the benefit of osimertinib treatment to patients with low EGFR T790M mutation allele frequency on disease progression.
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Affiliation(s)
- Asim Joshi
- Integrated Cancer Genomics Laboratory, Advanced Centre for Treatment Research Education In Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, Maharashtra, India 410210; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, India 400094
| | - Ashwin Butle
- Integrated Cancer Genomics Laboratory, Advanced Centre for Treatment Research Education In Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, Maharashtra, India 410210
| | - Supriya Hait
- Integrated Cancer Genomics Laboratory, Advanced Centre for Treatment Research Education In Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, Maharashtra, India 410210; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, India 400094
| | - Rohit Mishra
- Integrated Cancer Genomics Laboratory, Advanced Centre for Treatment Research Education In Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, Maharashtra, India 410210
| | - Vaishakhi Trivedi
- Department of Medical Oncology, Tata Memorial Centre, Ernest Borges Marg, Parel, Mumbai, India 400012; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, India 400094
| | - Rahul Thorat
- Laboratory Animal Facility, Advanced Centre for Treatment Research and Education In Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, Maharashtra, 410210
| | - Anuradha Choughule
- Department of Medical Oncology, Tata Memorial Centre, Ernest Borges Marg, Parel, Mumbai, India 400012; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, India 400094
| | - Vanita Noronha
- Department of Medical Oncology, Tata Memorial Centre, Ernest Borges Marg, Parel, Mumbai, India 400012; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, India 400094
| | - Kumar Prabhash
- Department of Medical Oncology, Tata Memorial Centre, Ernest Borges Marg, Parel, Mumbai, India 400012; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, India 400094
| | - Amit Dutt
- Integrated Cancer Genomics Laboratory, Advanced Centre for Treatment Research Education In Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, Maharashtra, India 410210; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, India 400094.
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Rapic S, Samuel T, Lindsay PE, Ansell S, Weersink RA, DaCosta RS. Assessing the Accuracy of Bioluminescence Image-Guided Stereotactic Body Radiation Therapy of Orthotopic Pancreatic Tumors Using a Small Animal Irradiator. Radiat Res 2022; 197:626-637. [PMID: 35192719 DOI: 10.1667/rade-21-00161.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 01/24/2022] [Indexed: 11/03/2022]
Abstract
Stereotactic body radiation therapy (SBRT) has shown promising results in the treatment of pancreatic cancer and other solid tumors. However, wide adoption of SBRT remains limited largely due to uncertainty about the treatment's optimal fractionation schedules to elicit maximal tumor response while limiting the dose to adjacent structures. A small animal irradiator in combination with a clinically relevant oncological animal model could address these questions. Accurate delivery of X rays to animal tumors may be hampered by suboptimal image-guided targeting of the X-ray beam in vivo. Integration of bioluminescence imaging (BLI) into small animal irradiators in addition to standard cone-beam computed tomography (CBCT) imaging improves target identification and high-precision therapy delivery to deep tumors with poor soft tissue contrast, such as pancreatic tumors. Using bioluminescent BxPC3 pancreatic adenocarcinoma human cells grown orthotopically in mice, we examined the performance of a small animal irradiator equipped with both CBCT and BLI in delivering targeted, hypo-fractionated, multi-beam SBRT. Its targeting accuracy was compared with magnetic resonance imaging (MRI)-guided targeting based on co-registration between CBCT and corresponding sequential magnetic resonance scans, which offer greater soft tissue contrast compared with CT alone. Evaluation of our platform's BLI-guided targeting accuracy was performed by quantifying in vivo changes in bioluminescence signal after treatment as well as staining of ex vivo tissues with γH2AX, Ki67, TUNEL, CD31 and CD11b to assess SBRT treatment effects. Using our platform, we found that BLI-guided SBRT enabled more accurate delivery of X rays to the tumor resulting in greater cancer cell DNA damage and proliferation inhibition compared with MRI-guided SBRT. Furthermore, BLI-guided SBRT allowed higher animal throughput and was more cost effective to use in the preclinical setting than MRI-guided SBRT. Taken together, our preclinical platform could be employed in translational research of SBRT of pancreatic cancer.
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Affiliation(s)
- Sara Rapic
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - Timothy Samuel
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Patricia E Lindsay
- Radiation Medicine Program, Princess Margaret Hospital, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
| | - Steve Ansell
- Radiation Medicine Program, Princess Margaret Hospital, Toronto, Ontario, Canada
| | - Robert A Weersink
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
- Radiation Medicine Program, Princess Margaret Hospital, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
- Techna Institute, University Health Network, Toronto, Ontario, Canada
- Institute of Biomedical Engineering, University of Toronto
| | - Ralph S DaCosta
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, Ontario, Canada
- Techna Institute, University Health Network, Toronto, Ontario, Canada
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The Molecular Subtype of Adult Acute Lymphoblastic Leukemia Samples Determines the Engraftment Site and Proliferation Kinetics in Patient-Derived Xenograft Models. Cells 2022; 11:cells11010150. [PMID: 35011712 PMCID: PMC8750004 DOI: 10.3390/cells11010150] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/30/2021] [Accepted: 12/31/2021] [Indexed: 12/28/2022] Open
Abstract
In acute lymphoblastic leukemia (ALL), conventional cell lines do not recapitulate the clonal diversity and microenvironment. Orthotopic patient-derived xenograft models (PDX) overcome these limitations and mimic the clinical situation, but molecular stability and engraftment patterns have not yet been thoroughly assessed. We herein describe and characterize the PDX generation in NSG mice. In vivo tumor cell proliferation, engraftment and location were monitored by flow cytometry and bioluminescence imaging. Leukemic cells were retransplanted for up to four passages, and comparative analyses of engraftment pattern, cellular morphology and genomic hotspot mutations were conducted. Ninety-four percent of all samples were successfully engrafted, and the xenograft velocity was dependent on the molecular subtype, outcome of the patient and transplantation passage. While BCR::ABL1 blasts were located in the spleen, KMT2A-positive cases had higher frequencies in the bone marrow. Molecular changes appeared in most model systems, with low allele frequency variants lost during primary engraftment. After the initial xenografting, however, the PDX models demonstrated high molecular stability. This protocol for reliable ALL engraftment demonstrates variability in the location and molecular signatures during serial transplantation. Thorough characterization of experimentally used PDX systems is indispensable for the correct analysis and valid data interpretation of preclinical PDX studies.
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Eckel-Passow JE, Kitange GJ, Decker PA, Kosel ML, Burgenske DM, Oberg AL, Sarkaria JN. Experimental design of preclinical experiments: number of PDX lines vs subsampling within PDX lines. Neuro Oncol 2021; 23:2066-2075. [PMID: 34107029 PMCID: PMC8643474 DOI: 10.1093/neuonc/noab137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Appropriately designed preclinical patient-derived xenograft (PDX) experiments are important to accurately inform human clinical trials. There is little experimental design guidance regarding choosing the number of PDX lines to study, and the number of mice within each PDX line. METHODS Retrospective data from IDH-wildtype glioblastoma preclinical experiments evaluating a uniform regimen of fractionated radiation (RT), temozolomide (TMZ) chemotherapy, and concurrent RT/TMZ across 27 PDX lines were used to evaluate experimental designs and empirically estimate statistical power for ANOVA and Cox regression. RESULTS Increasing the number of PDX lines resulted in more precise and reproducible estimates of effect size. To achieve 80% statistical power using ANOVA, experiments using a single PDX line required subsampling of 6 mice per PDX for each treatment group to detect a difference in survival of 135 days, and 9 mice per PDX to detect a difference of 100 days. Alternatively, a design that used 10 PDX lines had greater than 80% power to detect a difference of 135 days with a single mouse per PDX per treatment group, a difference of 100 days with 2 mice per PDX per treatment, and 35 days with more than 10 mice per PDX per treatment. Power for Cox regression was slightly smaller than ANOVA for very small experiments regardless of effect size and slightly higher than ANOVA for detecting a smaller effect size of 35 days difference in survival for moderate-to-large experiments. CONCLUSIONS Experimental designs using few mice across many PDX lines can provide robust results and account for inter-tumor variability.
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Affiliation(s)
| | - Gaspar J Kitange
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, USA
| | - Paul A Decker
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota, USA
| | - Matthew L Kosel
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Ann L Oberg
- Division of Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota, USA
| | - Jann N Sarkaria
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota, USA
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Exploiting the reactive oxygen species imbalance in high-risk paediatric acute lymphoblastic leukaemia through auranofin. Br J Cancer 2021; 125:55-64. [PMID: 33837299 PMCID: PMC8257682 DOI: 10.1038/s41416-021-01332-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 01/31/2021] [Accepted: 02/19/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND The prognosis for high-risk childhood acute leukaemias remains dismal and established treatment protocols often cause long-term side effects in survivors. This study aims to identify more effective and safer therapeutics for these patients. METHODS A high-throughput phenotypic screen of a library of 3707 approved drugs and pharmacologically active compounds was performed to identify compounds with selective cytotoxicity against leukaemia cells followed by further preclinical evaluation in patient-derived xenograft models. RESULTS Auranofin, an FDA-approved agent for the treatment of rheumatoid arthritis, was identified as exerting selective anti-cancer activity against leukaemia cells, including patient-derived xenograft cells from children with high-risk ALL, versus solid tumour and non-cancerous cells. It induced apoptosis in leukaemia cells by increasing reactive oxygen species (ROS) and potentiated the activity of the chemotherapeutic cytarabine against highly aggressive models of infant MLL-rearranged ALL by enhancing DNA damage accumulation. The enhanced sensitivity of leukaemia cells towards auranofin was associated with lower basal levels of the antioxidant glutathione and higher baseline ROS levels compared to solid tumour cells. CONCLUSIONS Our study highlights auranofin as a well-tolerated drug candidate for high-risk paediatric leukaemias that warrants further preclinical investigation for application in high-risk paediatric and adult acute leukaemias.
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7
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Guo C, Guo Y, Liu J, Gao Y, Wei M, Zhao R, Chen M, Zhang G. The G1 phase optical reporter serves as a sensor of CDK4/6 inhibition in vivo. Int J Biol Sci 2021; 17:728-741. [PMID: 33767584 PMCID: PMC7975702 DOI: 10.7150/ijbs.52101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 01/10/2021] [Indexed: 02/05/2023] Open
Abstract
Visualization of cell-cycle G1 phase for monitoring the early response of cell cycle specific drug remains challenging. In this study, we developed genetically engineered bioluminescent reporters by fusing full-length cyclin E to the C-terminal luciferase (named as CycE-Luc and CycE-Luc2). Next, HeLa cell line or an ER-positive breast cancer cell line MCF-7 was transfected with these reporters. In cellular assays, the bioluminescent signal of CycE-Luc and CycE-Luc2 was accumulated in the G1 phase and decreased after exiting from the G1 phase. The expression of CycE-Luc and CycE-Luc2 fusion protein was regulated in a cell cycle-dependent manner, which was mediated by proteasome ubiquitination and degradation. Next, our in vitro and in vivo experiment confirmed that the cell cycle arrested by anti-cancer agents (palbociclib or 5-FU) was monitored quantitatively and dynamically by bioluminescent imaging of these reporters in a real-time and non-invasive manner. Thus, these optical reporters could reflect the G1 phase alternation of cell cycle, and might become a future clinically translatable approach for predicting and monitoring response to palbociclib in patients with ER-positive breast cancer.
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Affiliation(s)
- Cuiping Guo
- The Breast Center, Cancer Hospital of Shantou University Medical College, Shantou, Guangdong, China
- Guangdong Provincial Key Laboratory for Breast Cancer Diagnosis and Treatment, Cancer Hospital of Shantou University Medical College, Shantou 515041, China
| | - Yuxian Guo
- The Breast Center, Cancer Hospital of Shantou University Medical College, Shantou, Guangdong, China
- Present address: Department of Thyroid and Breast Surgery, The Eighth Affiliated Hospital, Sun Yat-sen University, Shenzhen, Guangdong, China
| | - Jingjing Liu
- Cancer Center & Department of Breast and Thyroid Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, China
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Yiyang Gao
- Cancer Center & Department of Breast and Thyroid Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, China
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Min Wei
- Cancer Center & Department of Breast and Thyroid Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, China
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - Ruijun Zhao
- The Breast Center, Cancer Hospital of Shantou University Medical College, Shantou, Guangdong, China
| | - Min Chen
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen, Fujian, China
- Clinical Central Research Core and Key Laboratory for Endocrine-Related Cancer Precision Medicine of Xiamen, Xiang'an Hospital of Xiamen University, Xiamen, Fujian, China
- ✉ Corresponding authors: Prof. Guo-Jun Zhang, Cancer Center & Department of Breast and Thyroid Surgery, Xiang'an Hospital, Xiamen University, School of Medicine, Xiamen University, No. 2000, Xiang'an Road East, Xiang'an District, Xiamen, 361101, Fujian, China. Phone: +86-592-2889988, E-mail: or Min Chen, Phone: +86-592-2889270, E-mail:
| | - Guojun Zhang
- Cancer Center & Department of Breast and Thyroid Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, China
- Cancer Research Center, School of Medicine, Xiamen University, Xiamen, Fujian, China
- Clinical Central Research Core and Key Laboratory for Endocrine-Related Cancer Precision Medicine of Xiamen, Xiang'an Hospital of Xiamen University, Xiamen, Fujian, China
- ✉ Corresponding authors: Prof. Guo-Jun Zhang, Cancer Center & Department of Breast and Thyroid Surgery, Xiang'an Hospital, Xiamen University, School of Medicine, Xiamen University, No. 2000, Xiang'an Road East, Xiang'an District, Xiamen, 361101, Fujian, China. Phone: +86-592-2889988, E-mail: or Min Chen, Phone: +86-592-2889270, E-mail:
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Tunç E. Biyolüminesans ışıma ve biyolüminesans görüntüleme tekniklerinin moleküler biyoloji araştırmaları bakımından önemi. CUKUROVA MEDICAL JOURNAL 2019. [DOI: 10.17826/cumj.535811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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9
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Effective targeting of NAMPT in patient-derived xenograft models of high-risk pediatric acute lymphoblastic leukemia. Leukemia 2019; 34:1524-1539. [PMID: 31848452 DOI: 10.1038/s41375-019-0683-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 11/21/2019] [Accepted: 12/05/2019] [Indexed: 11/09/2022]
Abstract
The prognosis for children diagnosed with high-risk acute lymphoblastic leukemia (ALL) remains suboptimal, and more potent and less toxic treatments are urgently needed. We investigated the efficacy of a novel nicotinamide phosphoribosyltransferase inhibitor, OT-82, against a panel of patient-derived xenografts (PDXs) established from high-risk and poor outcome pediatric ALL cases. OT-82 was well-tolerated and demonstrated impressive single agent in vivo efficacy, achieving significant leukemia growth delay in 95% (20/21) and disease regression in 86% (18/21) of PDXs. In addition, OT-82 enhanced the efficacy of the established drugs cytarabine and dasatinib and, as a single agent, showed similar efficacy as an induction-type regimen combining three drugs used to treat pediatric ALL. OT-82 exerted its antileukemic action by depleting NAD+ and ATP, inhibiting the NAD+-requiring DNA damage repair enzyme PARP-1, increasing mitochondrial ROS levels and inducing DNA damage, culminating in apoptosis induction. OT-82 sensitivity was associated with the occurrence of mutations in major DNA damage response genes, while OT-82 resistance was characterized by high expression levels of CD38. In conclusion, our study provides evidence that OT-82, as a single agent, and in combination with established drugs, is a promising new therapeutic strategy for a broad spectrum of high-risk pediatric ALL for which improved therapies are urgently needed.
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Wunderlich M, Manning N, Sexton C, Sabulski A, Byerly L, O’Brien E, Perentesis JP, Mizukawa B, Mulloy JC. Improved chemotherapy modeling with RAG-based immune deficient mice. PLoS One 2019; 14:e0225532. [PMID: 31747424 PMCID: PMC6867639 DOI: 10.1371/journal.pone.0225532] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Accepted: 11/05/2019] [Indexed: 11/19/2022] Open
Abstract
We have previously characterized an acute myeloid leukemia (AML) chemotherapy model for SCID-based immune deficient mice (NSG and NSGS), consisting of 5 days of cytarabine (AraC) and 3 days of anthracycline (doxorubicin), to simulate the standard 7+3 chemotherapy regimen many AML patients receive. While this model remains tractable, there are several limitations, presumably due to the constitutional Pkrdcscid (SCID, severe combined immune deficiency) mutation which affects DNA repair in all tissues of the mouse. These include the inability to combine preconditioning with subsequent chemotherapy, the inability to repeat chemotherapy cycles, and the increased sensitivity of the host hematopoietic cells to genotoxic stress. Here we attempt to address these drawbacks through the use of alternative strains with RAG-based immune deficiency (NRG and NRGS). We find that RAG-based mice tolerate a busulfan preconditioning regimen in combination with either AML or 4-drug acute lymphoid leukemia (ALL) chemotherapy, expanding the number of samples that can be studied. RAG-based mice also tolerate multiple cycles of therapy, thereby allowing for more aggressive, realistic modeling. Furthermore, standard AML therapy in RAG mice was 3.8-fold more specific for AML cells, relative to SCID mice, demonstrating an improved therapeutic window for genotoxic agents. We conclude that RAG-based mice should be the new standard for preclinical evaluation of therapeutic strategies involving genotoxic agents.
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Affiliation(s)
- Mark Wunderlich
- Division of Experimental Hematology and Cancer Biology, Cancer and Blood Disease Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- * E-mail: (MW); (JM)
| | - Nicole Manning
- Division of Experimental Hematology and Cancer Biology, Cancer and Blood Disease Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Christina Sexton
- Division of Experimental Hematology and Cancer Biology, Cancer and Blood Disease Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Anthony Sabulski
- Division of Hematology and Oncology, Cancer and Blood Disease Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Luke Byerly
- Division of Hematology and Oncology, Cancer and Blood Disease Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Eric O’Brien
- Division of Hematology and Oncology, Cancer and Blood Disease Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - John P. Perentesis
- Division of Hematology and Oncology, Cancer and Blood Disease Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Benjamin Mizukawa
- Division of Hematology and Oncology, Cancer and Blood Disease Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - James C. Mulloy
- Division of Experimental Hematology and Cancer Biology, Cancer and Blood Disease Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, United States of America
- * E-mail: (MW); (JM)
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Jones L, McCalmont H, Evans K, Mayoh C, Kurmasheva RT, Billups CA, Houghton PJ, Smith MA, Lock RB. Preclinical activity of the antibody-drug conjugate denintuzumab mafodotin (SGN-CD19A) against pediatric acute lymphoblastic leukemia xenografts. Pediatr Blood Cancer 2019; 66:e27765. [PMID: 31012549 PMCID: PMC6588422 DOI: 10.1002/pbc.27765] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2019] [Revised: 04/02/2019] [Accepted: 04/03/2019] [Indexed: 01/08/2023]
Abstract
BACKGROUND Denintuzumab mafodotin (SGN-CD19A) is a CD19-targeting antibody-drug conjugate, comprising a monoclonal antibody conjugated to the potent cytotoxin monomethyl auristatin F. Since denintuzumab mafodotin has previously shown activity against B-cell malignancies in early-stage clinical trials, it was of interest to test it against the Pediatric Preclinical Testing Program preclinical models of CD19+ pediatric acute lymphoblastic leukemia (ALL). PROCEDURES Denintuzumab mafodotin was evaluated against eight B-cell lineage ALL patient-derived xenografts (PDXs), representing B-cell precursor ALL, Ph-like ALL, and mixed-lineage leukemia rearranged infant ALL. Denintuzumab mafodotin was administered weekly for 3 weeks at 3 mg/kg. It was also tested in combination with an induction-type chemotherapy regimen of vincristine, dexamethasone, and l-asparaginase (VXL) against three PDXs. The relationship between cell surface and gene expression of CD19 and drug activity was also assessed. RESULTS Denintuzumab mafodotin significantly delayed the progression of seven of eight PDXs tested and achieved objective responses in five of eight. There was no apparent subtype specificity of denintuzumab mafodotin activity. No correlations were observed between CD19 mRNA or cell surface expression and denintuzumab mafodotin activity, perhaps due to small sample size, and denintuzumab mafodotin treatment did not select for reduced CD19 expression. Combining denintuzumab mafodotin with VXL achieved therapeutic enhancement compared to either treatment alone. CONCLUSIONS Denintuzumab mafodotin showed single-agent activity against selected B-lineage ALL PDXs, although leukemia growth was evident in most models at 28 days from treatment initiation. This level of activity for denintuzumab mafodotin is consistent with that observed in adults with ALL.
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Affiliation(s)
- Luke Jones
- Children’s Cancer Institute, School of Women’s and Children’s Health, UNSW Sydney,
Australia
| | - Hannah McCalmont
- Children’s Cancer Institute, School of Women’s and Children’s Health, UNSW Sydney,
Australia
| | - Kathryn Evans
- Children’s Cancer Institute, School of Women’s and Children’s Health, UNSW Sydney,
Australia
| | - Chelsea Mayoh
- Children’s Cancer Institute, School of Women’s and Children’s Health, UNSW Sydney,
Australia
| | - Raushan T. Kurmasheva
- Greehey Children’s Cancer Research Institute, University of Texas Health Science Center San Antonio,
San Antonio, Texas
| | | | - Peter J. Houghton
- Greehey Children’s Cancer Research Institute, University of Texas Health Science Center San Antonio,
San Antonio, Texas
| | | | - Richard B. Lock
- Children’s Cancer Institute, School of Women’s and Children’s Health, UNSW Sydney,
Australia
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12
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Chan WK, Horvath TD, Tan L, Link T, Harutyunyan KG, Pontikos MA, Anishkin A, Du D, Martin LA, Yin E, Rempe SB, Sukharev S, Konopleva M, Weinstein JN, Lorenzi PL. Glutaminase Activity of L-Asparaginase Contributes to Durable Preclinical Activity against Acute Lymphoblastic Leukemia. Mol Cancer Ther 2019; 18:1587-1592. [PMID: 31209181 DOI: 10.1158/1535-7163.mct-18-1329] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 03/25/2019] [Accepted: 06/11/2019] [Indexed: 11/16/2022]
Abstract
We and others have reported that the anticancer activity of L-asparaginase (ASNase) against asparagine synthetase (ASNS)-positive cell types requires ASNase glutaminase activity, whereas anticancer activity against ASNS-negative cell types does not. Here, we attempted to disentangle the relationship between asparagine metabolism, glutamine metabolism, and downstream pathways that modulate cell viability by testing the hypothesis that ASNase anticancer activity is based on asparagine depletion rather than glutamine depletion per se. We tested ASNase wild-type (ASNaseWT) and its glutaminase-deficient Q59L mutant (ASNaseQ59L) and found that ASNase glutaminase activity contributed to durable anticancer activity against xenografts of the ASNS-negative Sup-B15 leukemia cell line in NOD/SCID gamma mice, whereas asparaginase activity alone yielded a mere growth delay. Our findings suggest that ASNase glutaminase activity is necessary for durable, single-agent anticancer activity in vivo, even against ASNS-negative cancer types.
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Affiliation(s)
- Wai-Kin Chan
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Thomas D Horvath
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Lin Tan
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Todd Link
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Karine G Harutyunyan
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Michael A Pontikos
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Andriy Anishkin
- Department of Biology, University of Maryland, College Park, Maryland
| | - Di Du
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Leona A Martin
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Eric Yin
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Susan B Rempe
- Center for Biological and Engineering Sciences, Sandia National Laboratories, Albuquerque, New Mexico
| | - Sergei Sukharev
- Department of Biology, University of Maryland, College Park, Maryland
| | - Marina Konopleva
- Department of Leukemia, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - John N Weinstein
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Philip L Lorenzi
- Department of Bioinformatics and Computational Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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13
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Integrating Small Animal Irradiators withFunctional Imaging for Advanced Preclinical Radiotherapy Research. Cancers (Basel) 2019; 11:cancers11020170. [PMID: 30717307 PMCID: PMC6406472 DOI: 10.3390/cancers11020170] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/23/2019] [Accepted: 01/29/2019] [Indexed: 12/16/2022] Open
Abstract
Translational research aims to provide direct support for advancing novel treatment approaches in oncology towards improving patient outcomes. Preclinical studies have a central role in this process and the ability to accurately model biological and physical aspects of the clinical scenario in radiation oncology is critical to translational success. The use of small animal irradiators with disease relevant mouse models and advanced in vivo imaging approaches offers unique possibilities to interrogate the radiotherapy response of tumors and normal tissues with high potential to translate to improvements in clinical outcomes. The present review highlights the current technology and applications of small animal irradiators, and explores how these can be combined with molecular and functional imaging in advanced preclinical radiotherapy research.
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14
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Heckl BC, Carlet M, Vick B, Roolf C, Alsadeq A, Grunert M, Liu WH, Liebl A, Hiddemann W, Marschalek R, Schewe DM, Spiekermann K, Junghanss C, Jeremias I. Frequent and reliable engraftment of certain adult primary acute lymphoblastic leukemias in mice. Leuk Lymphoma 2018; 60:848-851. [DOI: 10.1080/10428194.2018.1509314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Birgitta Christine Heckl
- Research Unit Apoptosis in Hematopoietic Stem Cells (AHS), Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany
| | - Michela Carlet
- Research Unit Apoptosis in Hematopoietic Stem Cells (AHS), Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany
| | - Binje Vick
- Research Unit Apoptosis in Hematopoietic Stem Cells (AHS), Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site, Munich, Germany
| | - Catrin Roolf
- Department of Medicine III – Hematology, Oncology and Palliative Care, Rostock University Medical Center, Rostock, Germany
| | - Ameera Alsadeq
- Pediatric Hematology/Oncology, ALL-BFM Study Group, Christian Albrechts University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
| | - Michaela Grunert
- Research Unit Apoptosis in Hematopoietic Stem Cells (AHS), Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany
| | - Wen-Hsin Liu
- Research Unit Apoptosis in Hematopoietic Stem Cells (AHS), Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany
| | - Andrea Liebl
- Research Unit Apoptosis in Hematopoietic Stem Cells (AHS), Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany
| | - Wolfgang Hiddemann
- German Cancer Consortium (DKTK), Partner Site, Munich, Germany
- Department of Medicine III, University Hospital, LMU, Munich, Germany
| | - Rolf Marschalek
- Institute of Pharmaceutical Biology, Goethe University, Frankfurt, Germany
| | - Denis Martin Schewe
- Pediatric Hematology/Oncology, ALL-BFM Study Group, Christian Albrechts University Kiel and University Hospital Schleswig-Holstein, Kiel, Germany
| | - Karsten Spiekermann
- German Cancer Consortium (DKTK), Partner Site, Munich, Germany
- Department of Medicine III, University Hospital, LMU, Munich, Germany
| | - Christian Junghanss
- Department of Medicine III – Hematology, Oncology and Palliative Care, Rostock University Medical Center, Rostock, Germany
| | - Irmela Jeremias
- Research Unit Apoptosis in Hematopoietic Stem Cells (AHS), Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany
- German Cancer Consortium (DKTK), Partner Site, Munich, Germany
- Department of Pediatrics, Dr. von Hauner Children’s Hospital, Ludwig Maximilians University (LMU), Munich, Germany
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15
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Bernards N, Ventura M, Fricke IB, Hendriks BS, Fitzgerald J, Lee H, Zheng J. Liposomal Irinotecan Achieves Significant Survival and Tumor Burden Control in a Triple Negative Breast Cancer Model of Spontaneous Metastasis. Mol Pharm 2018; 15:4132-4138. [DOI: 10.1021/acs.molpharmaceut.8b00540] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Nicholas Bernards
- TECHNA Institute for the Advancement of Technology for Health, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Manuela Ventura
- TECHNA Institute for the Advancement of Technology for Health, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Inga B. Fricke
- TECHNA Institute for the Advancement of Technology for Health, University Health Network, Toronto, Ontario M5G 1L7, Canada
| | - Bart S. Hendriks
- Merrimack Pharmaceuticals, Inc., Cambridge, Massachusetts 02139, United States
| | - Jonathan Fitzgerald
- Merrimack Pharmaceuticals, Inc., Cambridge, Massachusetts 02139, United States
| | - Helen Lee
- Merrimack Pharmaceuticals, Inc., Cambridge, Massachusetts 02139, United States
| | - Jinzi Zheng
- TECHNA Institute for the Advancement of Technology for Health, University Health Network, Toronto, Ontario M5G 1L7, Canada
- Institute of Biomaterial and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
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16
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Ding J, Wang C, Chang X. Establishment of a bioluminescent Renca cell line for renal carcinoma research. Int Urol Nephrol 2017; 50:55-61. [PMID: 28975469 DOI: 10.1007/s11255-017-1707-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 09/13/2017] [Indexed: 10/18/2022]
Abstract
PURPOSE Luciferase modification of tumour cells enables early and non-invasive imaging to detect tumour growth in situ and could provide sensitive and effective detection of carcinoma during research and therapy. METHODS Renca cells, a murine renal carcinoma cell line, were infected with lentivirus expressing luciferase to obtain Renca-luc. The proliferation, invasion, and migration of Renca and Renca-luc cell lines were compared using colorimetric, Boyden chamber, and wound-healing assays. Orthotopic tumour models were established in BALB/c mice using Renca and Renca-luc cells, and tumour growth in vivo was detected using bioluminescence imaging and magnetic resonance imaging (MRI). RESULTS Intensity of luciferase signals from Renca-luc was positively correlated with cell number. Bioluminescence signal was detected 1 day after the establishment of the renal carcinoma model using Renca-luc and was significantly increased after 7 days. Tumour size at 7 days following the establishment of renal carcinoma models using Renca and Renca-luc was determined using MRI. The presence of renal model tumours was confirmed by histological staining. The expression of luciferase did not affect Renca cell characteristics in vitro or tumour growth in vivo. CONCLUSION Luciferase labelling could provide a sensitive and non-invasive evaluation method for immunological and tumour therapy of renal carcinomas.
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Affiliation(s)
- Jie Ding
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School, Southeast University, #87 Dingjiaqiao Road, Nanjing, 210009, China.
| | - Chao Wang
- Education Ministry's Key Laboratory of Developmental Genes and Human Diseases, Institute of Life Sciences, Southeast University, #2 Sipailou, Nanjing, 210096, China
| | - Xiaofeng Chang
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School, Southeast University, #87 Dingjiaqiao Road, Nanjing, 210009, China.,Department of Urology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University, #321 Zhongshan Road, Nanjing, 210008, China
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