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Borović Šunjić S, Jaganjac M, Vlainić J, Halasz M, Žarković N. Lipid Peroxidation-Related Redox Signaling in Osteosarcoma. Int J Mol Sci 2024; 25:4559. [PMID: 38674143 PMCID: PMC11050283 DOI: 10.3390/ijms25084559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 04/12/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Oxidative stress and lipid peroxidation play important roles in numerous physiological and pathological processes, while the bioactive products of lipid peroxidation, lipid hydroperoxides and reactive aldehydes, act as important mediators of redox signaling in normal and malignant cells. Many types of cancer, including osteosarcoma, express altered redox signaling pathways. Such redox signaling pathways protect cancer cells from the cytotoxic effects of oxidative stress, thus supporting malignant transformation, and eventually from cytotoxic anticancer therapies associated with oxidative stress. In this review, we aim to explore the status of lipid peroxidation in osteosarcoma and highlight the involvement of lipid peroxidation products in redox signaling pathways, including the involvement of lipid peroxidation in osteosarcoma therapies.
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Affiliation(s)
- Suzana Borović Šunjić
- Laboratory for Oxidative Stress, Division of Molecular Medicine, Ruder Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia; (M.J.); (J.V.); (M.H.)
| | | | | | | | - Neven Žarković
- Laboratory for Oxidative Stress, Division of Molecular Medicine, Ruder Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia; (M.J.); (J.V.); (M.H.)
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2
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Beauregard MA, Bedford GC, Brenner DA, Sanchez Solis LD, Nishiguchi T, Abhimanyu, Longlax SC, Mahata B, Veiseh O, Wenzel PL, DiNardo AR, Hilton IB, Diehl MR. Persistent tailoring of MSC activation through genetic priming. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.01.578489. [PMID: 38370626 PMCID: PMC10871228 DOI: 10.1101/2024.02.01.578489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Mesenchymal stem/stromal cells (MSCs) are an attractive platform for cell therapy due to their safety profile and unique ability to secrete broad arrays of immunomodulatory and regenerative molecules. Yet, MSCs are well known to require preconditioning or priming to boost their therapeutic efficacy. Current priming methods offer limited control over MSC activation, yield transient effects, and often induce expression of pro-inflammatory effectors that can potentiate immunogenicity. Here, we describe a 'genetic priming' method that can both selectively and sustainably boost MSC potency via the controlled expression of the inflammatory-stimulus-responsive transcription factor IRF1 (interferon response factor 1). MSCs engineered to hyper-express IRF1 recapitulate many core responses that are accessed by biochemical priming using the proinflammatory cytokine interferon-γ (IFNγ). This includes the upregulation of anti-inflammatory effector molecules and the potentiation of MSC capacities to suppress T cell activation. However, we show that IRF1-mediated genetic priming is much more persistent than biochemical priming and can circumvent IFNγ-dependent expression of immunogenic MHC class II molecules. Together, the ability to sustainably activate and selectively tailor MSC priming responses creates the possibility of programming MSC activation more comprehensively for therapeutic applications.
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Affiliation(s)
| | - Guy C. Bedford
- Department of Bioengineering, Rice University, Houston, TX, USA
| | | | | | - Tomoki Nishiguchi
- The Global Tuberculosis Program, Texas Children’s Hospital, Immigrant and Global Health, WTS Center for Human Immunobiology, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Abhimanyu
- The Global Tuberculosis Program, Texas Children’s Hospital, Immigrant and Global Health, WTS Center for Human Immunobiology, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Santiago Carrero Longlax
- The Global Tuberculosis Program, Texas Children’s Hospital, Immigrant and Global Health, WTS Center for Human Immunobiology, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Barun Mahata
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Omid Veiseh
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Pamela L. Wenzel
- Department of Integrative Biology & Pharmacology, The University of Texas Health Science Center at Houston, Houston, TX, USA
- Center for Stem Cell and Regenerative Medicine, Brown Foundation Institute of Molecular Medicine, The University of Texas Health Science Center at Houston, Houston, TX, USA
- Immunology Program, The University of Texas MD Anderson UTHealth Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Andrew R. DiNardo
- The Global Tuberculosis Program, Texas Children’s Hospital, Immigrant and Global Health, WTS Center for Human Immunobiology, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
- Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Isaac B. Hilton
- Department of Bioengineering, Rice University, Houston, TX, USA
| | - Michael R. Diehl
- Department of Bioengineering, Rice University, Houston, TX, USA
- Department of Chemistry, Rice University, Houston, TX, USA
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Ridnour LA, Cheng RYS, Heinz WF, Pore M, Gonzalez AL, Femino EL, Moffat R, Wink AL, Imtiaz F, Coutinho L, Butcher D, Edmondson EF, Rangel MC, Wong STC, Lipkowitz S, Glynn S, Vitek MP, McVicar DW, Li X, Anderson SK, Paolocci N, Hewitt SM, Ambs S, Billiar TR, Chang JC, Lockett SJ, Wink DA. Spatial analysis of NOS2 and COX2 interaction with T-effector cells reveals immunosuppressive landscapes associated with poor outcome in ER- breast cancer patients. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.21.572867. [PMID: 38187660 PMCID: PMC10769421 DOI: 10.1101/2023.12.21.572867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Multiple immunosuppressive mechanisms exist in the tumor microenvironment that drive poor outcomes and decrease treatment efficacy. The co-expression of NOS2 and COX2 is a strong predictor of poor prognosis in ER- breast cancer and other malignancies. Together, they generate pro-oncogenic signals that drive metastasis, drug resistance, cancer stemness, and immune suppression. Using an ER- breast cancer patient cohort, we found that the spatial expression patterns of NOS2 and COX2 with CD3+CD8+PD1- T effector (Teff) cells formed a tumor immune landscape that correlated with poor outcome. NOS2 was primarily associated with the tumor-immune interface, whereas COX2 was associated with immune desert regions of the tumor lacking Teff cells. A higher ratio of NOS2 or COX2 to Teff was highly correlated with poor outcomes. Spatial analysis revealed that regional clustering of NOS2 and COX2 was associated with stromal-restricted Teff, while only COX2 was predominant in immune deserts. Examination of other immunosuppressive elements, such as PDL1/PD1, Treg, B7H4, and IDO1, revealed that PDL1/PD1, Treg, and IDO1 were primarily associated with restricted Teff, whereas B7H4 and COX2 were found in tumor immune deserts. Regardless of the survival outcome, other leukocytes, such as CD4 T cells and macrophages, were primarily in stromal lymphoid aggregates. Finally, in a 4T1 model, COX2 inhibition led to a massive cell infiltration, thus validating the hypothesis that COX2 is an essential component of the Teff exclusion process and, thus, tumor evasion. Our study indicates that NOS2/COX2 expression plays a central role in tumor immunosuppression. Our findings indicate that new strategies combining clinically available NOS2/COX2 inhibitors with various forms of immune therapy may open a new avenue for the treatment of aggressive ER-breast cancers.
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Affiliation(s)
- Lisa A Ridnour
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD
| | - Robert Y S Cheng
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD
| | - William F Heinz
- Optical Microscopy and Analysis Laboratory, Frederick National Laboratory for Cancer Research; Leidos Biomedical Research Inc. for the National Cancer Institute, Frederick, MD
| | - Milind Pore
- Imaging Mass Cytometry Frederick National Laboratory for Cancer Research
| | - Ana L Gonzalez
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD
| | - Elise L Femino
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD
| | - Rebecca Moffat
- Optical Microscopy and Analysis Laboratory, Frederick National Laboratory for Cancer Research; Leidos Biomedical Research Inc. for the National Cancer Institute, Frederick, MD
| | - Adelaide L Wink
- Optical Microscopy and Analysis Laboratory, Frederick National Laboratory for Cancer Research; Leidos Biomedical Research Inc. for the National Cancer Institute, Frederick, MD
| | - Fatima Imtiaz
- Optical Microscopy and Analysis Laboratory, Frederick National Laboratory for Cancer Research; Leidos Biomedical Research Inc. for the National Cancer Institute, Frederick, MD
| | - Leandro Coutinho
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD
- Faculdade de Medicina da Universidade de São Paulo and Comprehensive Center for Precision Oncology, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Donna Butcher
- Molecular Histopathology Laboratories, Leidos Biomedical Research Inc. for the National Cancer Institute
| | - Elijah F Edmondson
- Molecular Histopathology Laboratories, Leidos Biomedical Research Inc. for the National Cancer Institute
| | - M Cristina Rangel
- Faculdade de Medicina da Universidade de São Paulo and Comprehensive Center for Precision Oncology, Universidade de São Paulo, São Paulo, SP, Brazil
| | | | | | - Sharon Glynn
- Discipline of Pathology, Lambe Institute for Translational Research, School of Medicine, University of Galway, Galway, Ireland
| | | | - Daniel W McVicar
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD
| | - Xiaoxian Li
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA
| | - Stephen K Anderson
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD
- Basic Science Program, Frederick National Laboratory for Cancer Research
| | - Nazareno Paolocci
- Division of Cardiology, Department of Medicine, Johns Hopkins University, and Department of Biomedical Sciences, University of Padova, Italy
- Laboratory of Pathology CCR, NCI, NIH
| | | | - Stefan Ambs
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Timothy R Billiar
- Mary and Ron Neal Cancer Center, Houston Methodist Hospital and Weill Cornell Medicine, Houston, TX
| | - Jenny C Chang
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD
- Optical Microscopy and Analysis Laboratory, Frederick National Laboratory for Cancer Research; Leidos Biomedical Research Inc. for the National Cancer Institute, Frederick, MD
- Imaging Mass Cytometry Frederick National Laboratory for Cancer Research
- Faculdade de Medicina da Universidade de São Paulo and Comprehensive Center for Precision Oncology, Universidade de São Paulo, São Paulo, SP, Brazil
- Molecular Histopathology Laboratories, Leidos Biomedical Research Inc. for the National Cancer Institute
- Houston Methodist Weill Cornell Medical College, Houston TX
- Women's Malignancies Branch, CCR, NCI, NIH
- Discipline of Pathology, Lambe Institute for Translational Research, School of Medicine, University of Galway, Galway, Ireland
- (Mike Duke)
- Department of Pathology and Laboratory Medicine, Emory University, Atlanta, GA
- Basic Science Program, Frederick National Laboratory for Cancer Research
- Division of Cardiology, Department of Medicine, Johns Hopkins University, and Department of Biomedical Sciences, University of Padova, Italy
- Laboratory of Pathology CCR, NCI, NIH
- Laboratory of Human Carcinogenesis, CCR, NCI, NIH, Bethesda, MD
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
- Mary and Ron Neal Cancer Center, Houston Methodist Hospital and Weill Cornell Medicine, Houston, TX
| | - Stephen J Lockett
- Optical Microscopy and Analysis Laboratory, Frederick National Laboratory for Cancer Research; Leidos Biomedical Research Inc. for the National Cancer Institute, Frederick, MD
| | - David A Wink
- Cancer Innovation Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD
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Stone TW, Williams RO. Tryptophan metabolism as a 'reflex' feature of neuroimmune communication: Sensor and effector functions for the indoleamine-2, 3-dioxygenase kynurenine pathway. J Neurochem 2023. [PMID: 38102897 DOI: 10.1111/jnc.16015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/16/2023] [Accepted: 11/08/2023] [Indexed: 12/17/2023]
Abstract
Although the central nervous system (CNS) and immune system were regarded as independent entities, it is now clear that immune system cells can influence the CNS, and neuroglial activity influences the immune system. Despite the many clinical implications for this 'neuroimmune interface', its detailed operation at the molecular level remains unclear. This narrative review focuses on the metabolism of tryptophan along the kynurenine pathway, since its products have critical actions in both the nervous and immune systems, placing it in a unique position to influence neuroimmune communication. In particular, since the kynurenine pathway is activated by pro-inflammatory mediators, it is proposed that physical and psychological stressors are the stimuli of an organismal protective reflex, with kynurenine metabolites as the effector arm co-ordinating protective neural and immune system responses. After a brief review of the neuroimmune interface, the general perception of tryptophan metabolism along the kynurenine pathway is expanded to emphasize this environmentally driven perspective. The initial enzymes in the kynurenine pathway include indoleamine-2,3-dioxygenase (IDO1), which is induced by tissue damage, inflammatory mediators or microbial products, and tryptophan-2,3-dioxygenase (TDO), which is induced by stress-induced glucocorticoids. In the immune system, kynurenic acid modulates leucocyte differentiation, inflammatory balance and immune tolerance by activating aryl hydrocarbon receptors and modulates pain via the GPR35 protein. In the CNS, quinolinic acid activates N-methyl-D-aspartate (NMDA)-sensitive glutamate receptors, whereas kynurenic acid is an antagonist: the balance between glutamate, quinolinic acid and kynurenic acid is a significant regulator of CNS function and plasticity. The concept of kynurenine and its metabolites as mediators of a reflex coordinated protection against stress helps to understand the variety and breadth of their activity. It should also help to understand the pathological origin of some psychiatric and neurodegenerative diseases involving the immune system and CNS, facilitating the development of new pharmacological strategies for treatment.
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Affiliation(s)
- Trevor W Stone
- The Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
| | - Richard O Williams
- The Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
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5
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Wiśnicki K, Donizy P, Hałoń A, Wawrzonkowski P, Janczak D, Krajewska M, Banasik M. Indoleamine 2,3-Dioxygenase 1 (IDO1) in Kidney Transplantation: A Guardian against Rejection. J Clin Med 2023; 12:7531. [PMID: 38137602 PMCID: PMC10743959 DOI: 10.3390/jcm12247531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/27/2023] [Accepted: 12/05/2023] [Indexed: 12/24/2023] Open
Abstract
Kidney transplantation is a crucial treatment for end-stage kidney disease, with immunosuppressive drugs helping to reduce acute rejection rates. However, kidney graft longevity remains a concern. This study explores the role of indoleamine 2,3-dioxygenase 1 (IDO1) in kidney transplant immunology. IDO1 breaks down tryptophan, affecting immune cell behavior, primarily T-cells. The research focuses on both cellular and antibody-mediated immune responses, often causing graft damage. The study assessed IDO1 expression in renal transplant biopsies from patients with graft function decline, examining its connection to clinical parameters. A total of 121 biopsy samples were evaluated for IDO1 expression using immunohistochemistry. Patients were categorized as IDO1(+) positive or IDO1(-) negative based on immunoreactivity in tubular epithelium. Results showed a significant link between IDO1 expression and rejection incidence. IDO1(+) positive patients had lower rejection rates (32.9%) compared to IDO1(-) negative ones (62.2%) [p = 0.0017], with substantial differences in antibody-mediated rejection (AMR) (5.2% vs. 20%) [p = 0.0085] and T-cell mediated rejection (TCMR) (31.6% vs. 57.8%). These associations suggest that IDO1 may play a protective role in kidney transplant rejection. IDO1 modulation could offer novel therapeutic avenues to enhance graft survival. The study underscores IDO1 as a potential marker for rejection risk assessment, with its potential applications in personalized interventions and improved patient outcomes. Further research is needed to fully comprehend the mechanisms behind IDO1's immunomodulatory functions and its potential clinical translation.
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Affiliation(s)
- Krzysztof Wiśnicki
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland; (P.W.); (M.K.)
| | - Piotr Donizy
- Department of Clinical and Experimental Pathology, Wroclaw Medical University, 50-367 Wroclaw, Poland; (P.D.); (A.H.)
| | - Agnieszka Hałoń
- Department of Clinical and Experimental Pathology, Wroclaw Medical University, 50-367 Wroclaw, Poland; (P.D.); (A.H.)
| | - Patryk Wawrzonkowski
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland; (P.W.); (M.K.)
| | - Dariusz Janczak
- Department of Vascular, General and Transplantation Surgery, Wroclaw Medical University, 50-367 Wroclaw, Poland;
| | - Magdalena Krajewska
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland; (P.W.); (M.K.)
| | - Mirosław Banasik
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, 50-367 Wroclaw, Poland; (P.W.); (M.K.)
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Marszalek-Grabska M, Gawel K, Kosheva N, Kocki T, Turski WA. Developmental Exposure to Kynurenine Affects Zebrafish and Rat Behavior. Cells 2023; 12:2224. [PMID: 37759447 PMCID: PMC10526278 DOI: 10.3390/cells12182224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 09/04/2023] [Indexed: 09/29/2023] Open
Abstract
Proper nutrition and supplementation during pregnancy and breastfeeding are crucial for the development of offspring. Kynurenine (KYN) is the central metabolite of the kynurenine pathway and a direct precursor of other metabolites that possess immunoprotective or neuroactive properties, with the ultimate effect on fetal neurodevelopment. To date, no studies have evaluated the effects of KYN on early embryonic development. Thus, the aim of our study was to determine the effect of incubation of larvae with KYN in different developmental periods on the behavior of 5-day-old zebrafish. Additionally, the effects exerted by KYN administered on embryonic days 1-7 (ED 1-7) on the behavior of adult offspring of rats were elucidated. Our study revealed that the incubation with KYN induced changes in zebrafish behavior, especially when zebrafish embryos or larvae were incubated with KYN from 1 to 72 h post-fertilization (hpf) and from 49 to 72 hpf. KYN administered early during pregnancy induced subtle differences in the neurobehavioral development of adult offspring. Further research is required to understand the mechanism of these changes. The larval zebrafish model can be useful for studying disturbances in early brain development processes and their late behavioral consequences. The zebrafish-medium system may be applicable in monitoring drug metabolism in zebrafish.
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Affiliation(s)
- Marta Marszalek-Grabska
- Department of Experimental and Clinical Pharmacology, Medical University, Jaczewskiego 8b, 20-090 Lublin, Poland; (K.G.); (N.K.); (T.K.); (W.A.T.)
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Stover KR, Stafford PM, Damian AC, Pasangulapati JP, Goodwin-Tindall J, López Vásquez LM, Lee S, Yang SP, Reed MA, Barden CJ, Weaver DF. Development and Optimization of a Target Engagement Model of Brain IDO Inhibition for Alzheimer's Disease. Curr Alzheimer Res 2023; 20:705-714. [PMID: 38288825 DOI: 10.2174/0115672050283199240111111801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/26/2023] [Accepted: 11/28/2023] [Indexed: 04/04/2024]
Abstract
BACKGROUND Indoleamine 2,3-dioxygenase (IDO1) inhibition is a promising target as an Alzheimer's disease (AD) Disease-modifying therapy capable of downregulating immunopathic neuroinflammatory processes. METHODS To aid in the development of IDO inhibitors as potential AD therapeutics, we optimized a lipopolysaccharide (LPS) based mouse model of brain IDO1 inhibition by examining the dosedependent and time-course of the brain kynurenine:tryptophan (K:T) ratio to LPS via intraperitoneal dosing. RESULTS We determined the optimal LPS dose to increase IDO1 activity in the brain, and the ideal time point to quantify the brain K:T ratio after LPS administration. We then used a brain penetrant tool compound, EOS200271, to validate the model, determine the optimal dosing profile and found that a complete rescue of the K:T ratio was possible with the tool compound. CONCLUSION This LPS-based model of IDO1 target engagement is a useful tool that can be used in the development of brain penetrant IDO1 inhibitors for AD. A limitation of the present study is the lack of quantification of potential clinically relevant biomarkers in this model, which could be addressed in future studies.
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Affiliation(s)
- Kurt R Stover
- Krembil Research Institute, University Health Network, 399 Bathurst Street, Toronto M5T 2S8, Canada
- Treventis Corporation, 60 Leonard Avenue, Toronto M5T 0S8, Canada
| | - Paul M Stafford
- Krembil Research Institute, University Health Network, 399 Bathurst Street, Toronto M5T 2S8, Canada
| | - Andreea C Damian
- Krembil Research Institute, University Health Network, 399 Bathurst Street, Toronto M5T 2S8, Canada
| | - Jagadeesh P Pasangulapati
- Krembil Research Institute, University Health Network, 399 Bathurst Street, Toronto M5T 2S8, Canada
- Treventis Corporation, 60 Leonard Avenue, Toronto M5T 0S8, Canada
| | - Jake Goodwin-Tindall
- Krembil Research Institute, University Health Network, 399 Bathurst Street, Toronto M5T 2S8, Canada
| | | | - Sanghyun Lee
- Treventis Corporation, 60 Leonard Avenue, Toronto M5T 0S8, Canada
| | - Seung-Pil Yang
- Treventis Corporation, 60 Leonard Avenue, Toronto M5T 0S8, Canada
| | - Mark A Reed
- Krembil Research Institute, University Health Network, 399 Bathurst Street, Toronto M5T 2S8, Canada
- Treventis Corporation, 60 Leonard Avenue, Toronto M5T 0S8, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, M5S1A8, ON, Canada
| | - Christopher J Barden
- Krembil Research Institute, University Health Network, 399 Bathurst Street, Toronto M5T 2S8, Canada
- Treventis Corporation, 60 Leonard Avenue, Toronto M5T 0S8, Canada
| | - Donald F Weaver
- Krembil Research Institute, University Health Network, 399 Bathurst Street, Toronto M5T 2S8, Canada
- Treventis Corporation, 60 Leonard Avenue, Toronto M5T 0S8, Canada
- Department of Chemistry, University of Toronto, Toronto M55 3H6, Canada
- Department of Medicine (Neurology), University of Toronto, Toronto M5G 2C4, Canada
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