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Ngo HTT, Nguyen DH, You SH, Van Nguyen K, Kim SY, Hong Y, Min JJ. Reprogramming a Doxycycline-Inducible Gene Switch System for Bacteria-Mediated Cancer Therapy. Mol Imaging Biol 2024; 26:148-161. [PMID: 38017353 DOI: 10.1007/s11307-023-01879-6] [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: 09/08/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 11/30/2023]
Abstract
PURPOSE Attenuated Salmonella typhimurium is a potential biotherapeutic antitumor agent because it can colonize tumors and inhibit their growth. The present study aimed to develop a doxycycline (Doxy)-inducible gene switch system in attenuated S. typhimurium and assess its therapeutic efficacy in various tumor-bearing mice models. PROCEDURES A Doxy-inducible gene switch system comprising two plasmids was engineered to trigger the expression of cargo genes (Rluc8 and clyA). Attenuated S. typhimurium carrying Rluc8 were injected intravenously into BALB/c mice bearing CT26 tumors, and bioluminescence images were captured at specified intervals post-administration of doxycycline. The tumor-suppressive effects of bacteria carrying clyA were evaluated in BALB/c mice bearing CT26 tumors and in C57BL/6 mice bearing MC38 tumors. RESULTS Expression of the fimE gene, induced only in the presence of Doxy, triggered a unidirectional switch of the POXB20 promoter to induce expression of the cargo genes. The switch event was maintained over a long period of bacterial culture. After intravenous injection of transformed Salmonella into mice bearing CT26 tumors, the bacteria transformed with the Doxy-inducible gene switch system for Rluc8 targeted only tumor tissues and expressed the payloads 2 days after Doxy treatment. Notably, bacteria carrying the Doxy-inducible gene switch system for clyA effectively suppressed tumor growth and prolonged survival, even after just one Doxy induction. CONCLUSIONS These results suggest that attenuated S. typhimurium carrying this novel gene switch system elicited significant therapeutic effects through a single induction triggering and were a potential biotherapeutic agent for tumor therapy.
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Affiliation(s)
- Hien Thi-Thu Ngo
- Institute for Molecular Imaging and Theranostics, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
- Department of Molecular Medicine (BrainKorea21 Plus), Chonnam National University Graduate School, Gwangju, 61469, Republic of Korea
- Department of Biochemistry, Hanoi Medical University, No 1, Ton That Tung St., Dong Da, Hanoi, 100000, Vietnam
| | - Dinh-Huy Nguyen
- Institute for Molecular Imaging and Theranostics, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
- Department of Molecular Medicine (BrainKorea21 Plus), Chonnam National University Graduate School, Gwangju, 61469, Republic of Korea
| | - Sung-Hwan You
- Institute for Molecular Imaging and Theranostics, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
- CNCure Biotech, Hwasun, 58128, Republic of Korea
| | - Khuynh Van Nguyen
- Institute for Molecular Imaging and Theranostics, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
- Department of Molecular Medicine (BrainKorea21 Plus), Chonnam National University Graduate School, Gwangju, 61469, Republic of Korea
| | - So-Young Kim
- Institute for Molecular Imaging and Theranostics, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea
- CNCure Biotech, Hwasun, 58128, Republic of Korea
| | - Yeongjin Hong
- CNCure Biotech, Hwasun, 58128, Republic of Korea.
- Department of Microbiology, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea.
| | - Jung-Joon Min
- Institute for Molecular Imaging and Theranostics, Chonnam National University Medical School, Gwangju, 61469, Republic of Korea.
- Department of Molecular Medicine (BrainKorea21 Plus), Chonnam National University Graduate School, Gwangju, 61469, Republic of Korea.
- CNCure Biotech, Hwasun, 58128, Republic of Korea.
- Department of Nuclear Medicine, Chonnam National University Medical School and Hwasun Hospital, Gwangju, 61469, Republic of Korea.
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Kocherlakota S, Baes M. Benefits and Caveats in the Use of Retinal Pigment Epithelium-Specific Cre Mice. Int J Mol Sci 2024; 25:1293. [PMID: 38279294 PMCID: PMC10816505 DOI: 10.3390/ijms25021293] [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: 12/18/2023] [Revised: 01/16/2024] [Accepted: 01/18/2024] [Indexed: 01/28/2024] Open
Abstract
The retinal pigment epithelium (RPE) is an important monolayer of cells present in the outer retina, forming a major part of the blood-retina barrier (BRB). It performs many tasks essential for the maintenance of retinal integrity and function. With increasing knowledge of the retina, it is becoming clear that both common retinal disorders, like age-related macular degeneration, and rare genetic disorders originate in the RPE. This calls for a better understanding of the functions of various proteins within the RPE. In this regard, mice enabling an RPE-specific gene deletion are a powerful tool to study the role of a particular protein within the RPE cells in their native environment, simultaneously negating any potential influences of systemic changes. Moreover, since RPE cells interact closely with adjacent photoreceptors, these mice also provide an excellent avenue to study the importance of a particular gene function within the RPE to the retina as a whole. In this review, we outline and compare the features of various Cre mice created for this purpose, which allow for inducible or non-inducible RPE-specific knockout of a gene of interest. We summarize the various benefits and caveats involved in the use of such mouse lines, allowing researchers to make a well-informed decision on the choice of Cre mouse to use in relation to their research needs.
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Affiliation(s)
| | - Myriam Baes
- Laboratory of Cell Metabolism, Department of Pharmaceutical and Pharmacological Sciences, KU Leuven, 3000 Leuven, Belgium
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3
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Koller EJ, Wood CA, Lai Z, Borgenheimer E, Hoffman KL, Jankowsky JL. Doxycycline for transgene control disrupts gut microbiome diversity without compromising acute neuroinflammatory response. J Neuroinflammation 2024; 21:11. [PMID: 38178148 PMCID: PMC10765643 DOI: 10.1186/s12974-023-03004-4] [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: 09/15/2023] [Accepted: 12/21/2023] [Indexed: 01/06/2024] Open
Abstract
The tetracycline transactivator (tTA) system provides controllable transgene expression through oral administration of the broad-spectrum antibiotic doxycycline. Antibiotic treatment for transgene control in mouse models of disease might have undesirable systemic effects resulting from changes in the gut microbiome. Here we assessed the impact of doxycycline on gut microbiome diversity in a tTA-controlled model of Alzheimer's disease and then examined neuroimmune effects of these microbiome alterations following acute LPS challenge. We show that doxycycline decreased microbiome diversity in both transgenic and wild-type mice and that these changes persisted long after drug withdrawal. Despite the change in microbiome composition, doxycycline treatment had minimal effect on basal transcriptional signatures of inflammation the brain or on the neuroimmune response to LPS challenge. Our findings suggest that central neuroimmune responses may be less affected by doxycycline at doses needed for transgene control than by antibiotic cocktails at doses used for experimental microbiome disruption.
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Affiliation(s)
- Emily J Koller
- Department of Neuroscience, Baylor College of Medicine, One Baylor Plaza, Mail Stop BCM295, Houston, TX, 77030, USA
| | - Caleb A Wood
- Department of Neuroscience, Baylor College of Medicine, One Baylor Plaza, Mail Stop BCM295, Houston, TX, 77030, USA
| | - Zoe Lai
- Department of Neuroscience, Baylor College of Medicine, One Baylor Plaza, Mail Stop BCM295, Houston, TX, 77030, USA
| | - Ella Borgenheimer
- Department of Neuroscience, Baylor College of Medicine, One Baylor Plaza, Mail Stop BCM295, Houston, TX, 77030, USA
| | - Kristi L Hoffman
- Alkek Center for Metagenomics and Microbiome Research, Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Joanna L Jankowsky
- Department of Neuroscience, Baylor College of Medicine, One Baylor Plaza, Mail Stop BCM295, Houston, TX, 77030, USA.
- Departments of Neurology, Neurosurgery, and Molecular and Cellular Biology, Huffington Center On Aging, Baylor College of Medicine, Houston, TX, 77030, USA.
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Ha C, Bakshi S, Brahma MK, Potter LA, Chang SF, Sun Z, Benavides GA, He L, Umbarkar P, Zou L, Curfman S, Sunny S, Paterson AJ, Rajasekaran N, Barnes JW, Zhang J, Lal H, Xie M, Darley‐Usmar VM, Chatham JC, Wende AR. Sustained Increases in Cardiomyocyte Protein O-Linked β-N-Acetylglucosamine Levels Lead to Cardiac Hypertrophy and Reduced Mitochondrial Function Without Systolic Contractile Impairment. J Am Heart Assoc 2023; 12:e029898. [PMID: 37750556 PMCID: PMC10727241 DOI: 10.1161/jaha.123.029898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 08/03/2023] [Indexed: 09/27/2023]
Abstract
Background Lifestyle and metabolic diseases influence the severity and pathogenesis of cardiovascular disease through numerous mechanisms, including regulation via posttranslational modifications. A specific posttranslational modification, the addition of O-linked β-N acetylglucosamine (O-GlcNAcylation), has been implicated in molecular mechanisms of both physiological and pathologic adaptations. The current study aimed to test the hypothesis that in cardiomyocytes, sustained protein O-GlcNAcylation contributes to cardiac adaptations, and its progression to pathophysiology. Methods and Results Using a naturally occurring dominant-negative O-GlcNAcase (dnOGA) inducible cardiomyocyte-specific overexpression transgenic mouse model, we induced dnOGA in 8- to 10-week-old mouse hearts. We examined the effects of 2-week and 24-week dnOGA overexpression, which progressed to a 1.8-fold increase in protein O-GlcNAcylation. Two-week increases in protein O-GlcNAc levels did not alter heart weight or function; however, 24-week increases in protein O-GlcNAcylation led to cardiac hypertrophy, mitochondrial dysfunction, fibrosis, and diastolic dysfunction. Interestingly, systolic function was maintained in 24-week dnOGA overexpression, despite several changes in gene expression associated with cardiovascular disease. Specifically, mRNA-sequencing analysis revealed several gene signatures, including reduction of mitochondrial oxidative phosphorylation, fatty acid, and glucose metabolism pathways, and antioxidant response pathways after 24-week dnOGA overexpression. Conclusions This study indicates that moderate increases in cardiomyocyte protein O-GlcNAcylation leads to a differential response with an initial reduction of metabolic pathways (2-week), which leads to cardiac remodeling (24-week). Moreover, the mouse model showed evidence of diastolic dysfunction consistent with a heart failure with preserved ejection fraction. These findings provide insight into the adaptive versus maladaptive responses to increased O-GlcNAcylation in heart.
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Affiliation(s)
- Chae‐Myeong Ha
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - Sayan Bakshi
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - Manoja K. Brahma
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - Luke A. Potter
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - Samuel F. Chang
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - Zhihuan Sun
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - Gloria A. Benavides
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - Lihao He
- Division of Cardiovascular Disease, Department of MedicineUniversity of Alabama at BirminghamBirminghamAL
| | - Prachi Umbarkar
- Division of Cardiovascular Disease, Department of MedicineUniversity of Alabama at BirminghamBirminghamAL
| | - Luyun Zou
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - Samuel Curfman
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - Sini Sunny
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - Andrew J. Paterson
- Division of Endocrinology, Diabetes, and Metabolism, Department of MedicineUniversity of Alabama at BirminghamBirminghamAL
| | | | - Jarrod W. Barnes
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of MedicineUniversity of Alabama at BirminghamBirminghamAL
| | - Jianhua Zhang
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - Hind Lal
- Division of Cardiovascular Disease, Department of MedicineUniversity of Alabama at BirminghamBirminghamAL
| | - Min Xie
- Division of Cardiovascular Disease, Department of MedicineUniversity of Alabama at BirminghamBirminghamAL
| | - Victor M. Darley‐Usmar
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - John C. Chatham
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
| | - Adam R. Wende
- Division of Molecular and Cellular Pathology, Department of PathologyUniversity of Alabama at BirminghamBirminghamAL
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Sebo DJ, Fetsko AR, Phipps KK, Taylor MR. Functional identification of the zebrafish Interleukin-1 receptor in an embryonic model of Il-1β-induced systemic inflammation. Front Immunol 2022; 13:1039161. [PMID: 36389773 PMCID: PMC9643328 DOI: 10.3389/fimmu.2022.1039161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 10/14/2022] [Indexed: 11/01/2023] Open
Abstract
Interleukin-1β (IL-1β) is a potent proinflammatory cytokine that plays a vital role in the innate immune system. To observe the innate immune response in vivo, several transgenic zebrafish lines have been developed to model IL-1β-induced inflammation and to visualize immune cell migration and proliferation in real time. However, our understanding of the IL-1β response in zebrafish is limited due to an incomplete genome annotation and a lack of functional data for the cytokine receptors involved in the inflammatory process. Here, we use a combination of database mining, genetic analyses, and functional assays to identify zebrafish Interleukin-1 receptor, type 1 (Il1r1). We identified putative zebrafish il1r1 candidate genes that encode proteins with predicted structures similar to human IL1R1. To examine functionality of these candidates, we designed highly effective morpholinos to disrupt gene expression in a zebrafish model of embryonic Il-1β-induced systemic inflammation. In this double transgenic model, ubb:Gal4-EcR, uas:il1βmat , the zebrafish ubiquitin b (ubb) promoter drives expression of the modified Gal4 transcription factor fused to the ecdysone receptor (EcR), which in turn drives the tightly-regulated expression and secretion of mature Il-1β only in the presence of the ecdysone analog tebufenozide (Teb). Application of Teb to ubb:Gal4-EcR, uas:il1βmat embryos causes premature death, fin degradation, substantial neutrophil expansion, and generation of reactive oxygen species (ROS). To rescue these deleterious phenotypes, we injected ubb:Gal4-EcR, uas:il1βmat embryos with putative il1r1 morpholinos and found that knockdown of only one candidate gene prevented the adverse effects caused by Il-1β. Mosaic knockout of il1r1 using the CRISPR/Cas9 system phenocopied these results. Taken together, our study identifies the functional zebrafish Il1r1 utilizing a genetic model of Il-1β-induced inflammation and provides valuable new insights to study inflammatory conditions specifically driven by Il-1β or related to Il1r1 function in zebrafish.
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Affiliation(s)
- Dylan J. Sebo
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin–Madison, Madison, WI, United States
| | - Audrey R. Fetsko
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin–Madison, Madison, WI, United States
| | - Kallie K. Phipps
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin–Madison, Madison, WI, United States
- Pharmacology and Toxicology Program, School of Pharmacy, University of Wisconsin–Madison, Madison, WI, United States
| | - Michael R. Taylor
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Wisconsin–Madison, Madison, WI, United States
- Pharmacology and Toxicology Program, School of Pharmacy, University of Wisconsin–Madison, Madison, WI, United States
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6
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Arias A, Manubens-Gil L, Dierssen M. Fluorescent transgenic mouse models for whole-brain imaging in health and disease. Front Mol Neurosci 2022; 15:958222. [PMID: 36211979 PMCID: PMC9538927 DOI: 10.3389/fnmol.2022.958222] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 08/08/2022] [Indexed: 11/25/2022] Open
Abstract
A paradigm shift is occurring in neuroscience and in general in life sciences converting biomedical research from a descriptive discipline into a quantitative, predictive, actionable science. Living systems are becoming amenable to quantitative description, with profound consequences for our ability to predict biological phenomena. New experimental tools such as tissue clearing, whole-brain imaging, and genetic engineering technologies have opened the opportunity to embrace this new paradigm, allowing to extract anatomical features such as cell number, their full morphology, and even their structural connectivity. These tools will also allow the exploration of new features such as their geometrical arrangement, within and across brain regions. This would be especially important to better characterize brain function and pathological alterations in neurological, neurodevelopmental, and neurodegenerative disorders. New animal models for mapping fluorescent protein-expressing neurons and axon pathways in adult mice are key to this aim. As a result of both developments, relevant cell populations with endogenous fluorescence signals can be comprehensively and quantitatively mapped to whole-brain images acquired at submicron resolution. However, they present intrinsic limitations: weak fluorescent signals, unequal signal strength across the same cell type, lack of specificity of fluorescent labels, overlapping signals in cell types with dense labeling, or undetectable signal at distal parts of the neurons, among others. In this review, we discuss the recent advances in the development of fluorescent transgenic mouse models that overcome to some extent the technical and conceptual limitations and tradeoffs between different strategies. We also discuss the potential use of these strains for understanding disease.
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Affiliation(s)
- Adrian Arias
- Department of System Biology, Centre for Genomic Regulation, The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Linus Manubens-Gil
- Institute for Brain and Intelligence, Southeast University, Nanjing, China
| | - Mara Dierssen
- Department of System Biology, Centre for Genomic Regulation, The Barcelona Institute of Science and Technology, Barcelona, Spain
- Department of Experimental and Health Sciences, University Pompeu Fabra, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Barcelona, Spain
- *Correspondence: Mara Dierssen,
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Colicchia V, Häggblad M, Sirozh O, Porebski B, Balan M, Li X, Lidemalm L, Carreras‐Puigvert J, Hühn D, Fernandez‐Capetillo O. New regulators of the tetracycline-inducible gene expression system identified by chemical and genetic screens. FEBS Open Bio 2022; 12:1896-1908. [PMID: 36062323 PMCID: PMC9527584 DOI: 10.1002/2211-5463.13482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 08/01/2022] [Accepted: 09/02/2022] [Indexed: 12/14/2022] Open
Abstract
The tetracycline repressor (tetR)-regulated system is a widely used tool to specifically control gene expression in mammalian cells. Based on this system, we generated a human osteosarcoma cell line, which allows for the inducible expression of an EGFP fusion of the TAR DNA-binding protein 43 (TDP-43), which has been linked to neurodegenerative diseases. Consistent with previous findings, TDP-43 overexpression led to the accumulation of aggregates and limited the viability of U2OS. Using this inducible system, we conducted a chemical screen with a library that included FDA-approved drugs. While the primary screen identified several compounds that prevented TDP-43 toxicity, further experiments revealed that these chemicals abrogated the doxycycline-dependent TDP-43 expression. This antagonistic effect was observed with both doxycycline and tetracycline, and in several Tet-On cell lines expressing different genes, confirming the general effect of these compounds as inhibitors of the tetR system. Using the same cell line, a genome-wide CRISPR/Cas9 screen identified epigenetic regulators such as the G9a methyltransferase and TRIM28 as potential modifiers of TDP-43 toxicity. Yet again, further experiments revealed that G9a inhibition or TRIM28 loss prevented doxycycline-dependent expression of TDP-43. In summary, we have identified new chemical and genetic regulators of the tetR system, thereby raising awareness of the limitations of this approach to conduct chemical or genetic screening in mammalian cells.
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Affiliation(s)
- Valeria Colicchia
- Science for Life Laboratory, Division of Genome Biology, Department of Medical Biochemistry and BiophysicsKarolinska InstituteStockholmSweden,Present address:
Department of BiologyUniversity of Rome Tor VergataItaly
| | - Maria Häggblad
- Science for Life Laboratory, Division of Genome Biology, Department of Medical Biochemistry and BiophysicsKarolinska InstituteStockholmSweden
| | - Oleksandra Sirozh
- Genomic Instability GroupSpanish National Cancer Research Centre (CNIO)MadridSpain
| | - Bartlomiej Porebski
- Science for Life Laboratory, Division of Genome Biology, Department of Medical Biochemistry and BiophysicsKarolinska InstituteStockholmSweden
| | - Mirela Balan
- Science for Life Laboratory, Division of Genome Biology, Department of Medical Biochemistry and BiophysicsKarolinska InstituteStockholmSweden
| | - Xuexin Li
- Science for Life Laboratory, Division of Genome Biology, Department of Medical Biochemistry and BiophysicsKarolinska InstituteStockholmSweden
| | - Louise Lidemalm
- Science for Life Laboratory, Division of Genome Biology, Department of Medical Biochemistry and BiophysicsKarolinska InstituteStockholmSweden
| | - Jordi Carreras‐Puigvert
- Present address:
Department of BiologyUniversity of Rome Tor VergataItaly,Present address:
Department of Pharmaceutical Biosciences and Science for Life LaboratoryUppsala UniversitySweden
| | - Daniela Hühn
- Science for Life Laboratory, Division of Genome Biology, Department of Medical Biochemistry and BiophysicsKarolinska InstituteStockholmSweden
| | - Oscar Fernandez‐Capetillo
- Science for Life Laboratory, Division of Genome Biology, Department of Medical Biochemistry and BiophysicsKarolinska InstituteStockholmSweden,Genomic Instability GroupSpanish National Cancer Research Centre (CNIO)MadridSpain
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The Effects of Tamoxifen on Tolerogenic Cells in Cancer. BIOLOGY 2022; 11:biology11081225. [PMID: 36009853 PMCID: PMC9405160 DOI: 10.3390/biology11081225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 08/01/2022] [Accepted: 08/01/2022] [Indexed: 11/30/2022]
Abstract
Simple Summary Tamoxifen is a very well-known hormonal therapy used to treat breast cancer patients. It works by blocking the effects of estrogen in breast tissue by competing with estradiol (E2) in the receptor site and binding to DNA to inhibit carcinogenesis. Moreover, it is less clarified that TAM is also involved indirectly via a Foxp3 knockout model through the CreER system to target specific immune checkpoints, especially checkpoints arising in cancer therapy. The suppressive function of tolerogenic cells is very important in the TME. Hence, in our study, we observed the effects of TAM on Tregs, in which it is involved indirectly via the CreER system. In addition, we also review the effects of TAM on other cells, which are MDSCs and DCs, that act by bridging the innate and adaptive immune systems. Abstract Tamoxifen (TAM) is the most prescribed selective estrogen receptor modulator (SERM) to treat hormone-receptor-positive breast cancer patients and has been used for more than 20 years. Its role as a hormone therapy is well established; however, the potential role in modulating tolerogenic cells needs to be better clarified. Infiltrating tumor-microenvironment-regulatory T cells (TME-Tregs) are important as they serve a suppressive function through the transcription factor Forkhead box P3 (Foxp3). Abundant studies have suggested that Foxp3 regulates the expression of several genes (CTLA-4, PD-1, LAG-3, TIM-3, TIGIT, TNFR2) involved in carcinogenesis to utilize its tumor suppressor function through knockout models. TAM is indirectly concomitant via the Cre/loxP system by allowing nuclear translocation of the fusion protein, excision of the floxed STOP cassette and heritable expression of encoding fluorescent protein in a cohort of cells that express Foxp3. Moreover, TAM administration in breast cancer treatment has shown its effects directly through MDSCs by the enrichment of its leukocyte populations, such as NK and NKT cells, while it impairs the differentiation and activation of DCs. However, the fundamental mechanisms of the reduction of this pool by TAM are unknown. Here, we review the vital effects of TAM on Tregs for a precise mechanistic understanding of cancer immunotherapies.
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Yoshimoto M, Kosters A, Cornelius S, Valiente N, Cheng H, Latorre A, Nishida C, Ghosn EEB, Kobayashi M. Mast Cell Repopulating Ability Is Lost During the Transition From Pre-HSC to FL HSC. Front Immunol 2022; 13:896396. [PMID: 35898504 PMCID: PMC9309215 DOI: 10.3389/fimmu.2022.896396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 06/15/2022] [Indexed: 11/17/2022] Open
Abstract
Recent advances in developmental immunology have revealed a hematopoietic stem cell (HSC)-independent origin for various innate immune lineages, including mast cells (MCs). It is now established that adult bone marrow (BM) long-term HSCs do not regenerate MCs but, instead, the physiological production of MCs starts before the emergence of HSCs in the aorta-gonad-mesonephros (AGM) region and is mostly completed before birth. However, while the AGM region represents a major site of MC generation during ontogeny, whether the first emerging HSCs in the AGM or fetal liver (FL) possess the potential to regenerate MCs is unknown. Here, we combined three fate-mapping mouse models with detailed HSC transplantation assays to determine the potential of AGM and FL HSCs to produce MCs. We show that HSCs from E11.5 AGM and E12.5 FL efficiently repopulated MCs in recipients. In stark contrast, HSCs from ≥E14.5 FL failed to reconstitute MCs. An Endothelial (EC) fate-mapping study confirmed the EC origin of the majority of MCs. Additionally, our HSC-labeling showed that HSCs do not produce MCs in a physiological setting. Hence, although most MCs are generated and maintained via an HSC-independent pathway, the earliest HSCs to emerge in the AGM and seed the early FL can produce MCs, but only during a minimal time window. Our results challenge the stem cell theory in hematology and EC-derived mast cells may contribute to the pathogenesis of postnatal mast cell disorders.
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Affiliation(s)
- Momoko Yoshimoto
- University of Texas Health Science Center at Houston, Center for Stem Cell and Regenerative Medicine, Houston, TX, United States
- *Correspondence: Michihiro Kobayashi, ; Eliver E. B. Ghosn, ; Momoko Yoshimoto,
| | - Astrid Kosters
- Lowance Center for Human Immunology, Division of Immunology and Rheumatology, Department of Medicine and Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
| | - Samuel Cornelius
- University of Texas Health Science Center at Houston, Center for Stem Cell and Regenerative Medicine, Houston, TX, United States
| | - Noemi Valiente
- University of Texas Health Science Center at Houston, Center for Stem Cell and Regenerative Medicine, Houston, TX, United States
| | - Haizi Cheng
- University of Texas Health Science Center at Houston, Center for Stem Cell and Regenerative Medicine, Houston, TX, United States
| | - Augusto Latorre
- University of Texas Health Science Center at Houston, Center for Stem Cell and Regenerative Medicine, Houston, TX, United States
| | - Chika Nishida
- University of Texas Health Science Center at Houston, Center for Stem Cell and Regenerative Medicine, Houston, TX, United States
| | - Eliver E. B. Ghosn
- Lowance Center for Human Immunology, Division of Immunology and Rheumatology, Department of Medicine and Pediatrics, Emory University School of Medicine, Atlanta, GA, United States
- Emory Vaccine Center, Yerkes National Primate Research Center, Emory University School of Medicine, Atlanta, GA, United States
- *Correspondence: Michihiro Kobayashi, ; Eliver E. B. Ghosn, ; Momoko Yoshimoto,
| | - Michihiro Kobayashi
- University of Texas Health Science Center at Houston, Center for Stem Cell and Regenerative Medicine, Houston, TX, United States
- *Correspondence: Michihiro Kobayashi, ; Eliver E. B. Ghosn, ; Momoko Yoshimoto,
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10
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Lewis KT, Oles LR, MacDougald OA. Tetracycline response element driven Cre causes ectopic recombinase activity independent of transactivator element. Mol Metab 2022; 61:101501. [PMID: 35452876 PMCID: PMC9170755 DOI: 10.1016/j.molmet.2022.101501] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/06/2022] [Accepted: 04/14/2022] [Indexed: 12/03/2022] Open
Abstract
OBJECTIVE Tamoxifen is widely used for inducible Cre-LoxP systems but has several undesirable side effects for researchers investigating metabolism or energy balance, including weight loss, lipoatrophy, and drug incorporation into lipid stores. For this reason, we sought to determine whether a doxycycline-inducible system would be more advantageous for adipocyte-specific Cre mouse models, but serendipitously discovered widespread ectopic tetracycline response element Cre (TRE-Cre) recombinase activity. METHODS Adipocyte-specific tamoxifen- and doxycycline-inducible Cre mice were crossed to fluorescent Cre reporter mice and visualized by confocal microscopy to assess efficiency and background activity. TRE-Cre mice were crossed to stop-floxed diphtheria toxin mice to selectively ablate cells with background Cre activity. RESULTS Tamoxifen- and doxycycline-inducible systems performed similarly in adipose tissues, but ectopic Cre recombination was evident in numerous other cell types of the latter, most notably neurons. The source of ectopic Cre activity was isolated to the TRE-Cre transgene, driven by the pTet (tetO7) tetracycline-inducible promoter. Ablation of cells with ectopic recombination in mice led to stunted growth, diminished survival, and reduced brain mass. CONCLUSIONS These results indicate that tamoxifen- and doxycycline-inducible adipocyte-specific Cre mouse models are similarly efficient, but the TRE-Cre component of the latter is inherently leaky. TRE-Cre background activity is especially pronounced in the brain and peripheral nerve fibers, and selective ablation of these cells impairs mouse development and survival. Caution should be taken when pairing TRE-Cre with floxed alleles that have defined roles in neural function, and additional controls should be included when using this model system.
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Affiliation(s)
- Kenneth T Lewis
- University of Michigan Medical School, Department of Molecular & Integrative Physiology, Ann Arbor, MI, USA
| | - Lily R Oles
- University of Michigan Medical School, Department of Molecular & Integrative Physiology, Ann Arbor, MI, USA
| | - Ormond A MacDougald
- University of Michigan Medical School, Department of Molecular & Integrative Physiology, Ann Arbor, MI, USA; University of Michigan Medical School, Department of Internal Medicine, Ann Arbor, MI, USA.
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11
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Bolshakov AP. Problems with Technologies of Genomic Editing and Transgenesis. NEUROCHEM J+ 2021. [DOI: 10.1134/s1819712421040036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Bekebrede AF, Keijer J, Gerrits WJJ, de Boer VCJ. Mitochondrial and glycolytic extracellular flux analysis optimization for isolated pig intestinal epithelial cells. Sci Rep 2021; 11:19961. [PMID: 34620944 PMCID: PMC8497502 DOI: 10.1038/s41598-021-99460-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Accepted: 09/01/2021] [Indexed: 02/07/2023] Open
Abstract
Intestinal epithelial cells (IECs) are crucial to maintain intestinal function and the barrier against the outside world. To support their function they rely on energy production, and failure to produce enough energy can lead to IEC malfunction and thus decrease intestinal barrier function. However, IEC metabolic function is not often used as an outcome parameter in intervention studies, perhaps because of the lack of available methods. We therefore developed a method to isolate viable IECs, suitable to faithfully measure their metabolic function by determining extracellular glycolytic and mitochondrial flux. First, various methods were assessed to obtain viable IECs. We then adapted a previously in-house generated image-analysis algorithm to quantify the amount of seeded IECs. Correcting basal respiration data of a group of piglets using this algorithm reduced the variation, showing that this algorithm allows for more accurate analysis of metabolic function. We found that delay in metabolic analysis after IEC isolation decreases their metabolic function and should therefore be prevented. The presence of antibiotics during isolation and metabolic assessment also decreased the metabolic function of IECs. Finally, we found that primary pig IECs did not respond to Oligomycin, a drug that inhibits complex V of the electron transport chain, which may be because of the presence of drug exporters. A method was established to faithfully measure extracellular glycolytic and mitochondrial flux of pig primary IECs. This tool is suitable to gain a better understanding of how interventions affect IEC metabolic function.
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Affiliation(s)
- A F Bekebrede
- Human and Animal Physiology, Wageningen University and Research, 6708 WD, Wageningen, The Netherlands.,Animal Nutrition Group, Wageningen University and Research, 6708 WD, Wageningen, The Netherlands
| | - J Keijer
- Human and Animal Physiology, Wageningen University and Research, 6708 WD, Wageningen, The Netherlands
| | - W J J Gerrits
- Animal Nutrition Group, Wageningen University and Research, 6708 WD, Wageningen, The Netherlands
| | - V C J de Boer
- Human and Animal Physiology, Wageningen University and Research, 6708 WD, Wageningen, The Netherlands.
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13
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Nicola FDC, Hua I, Levine AJ. Intersectional genetic tools to study skilled reaching in mice. Exp Neurol 2021; 347:113879. [PMID: 34597682 DOI: 10.1016/j.expneurol.2021.113879] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 09/10/2021] [Accepted: 09/24/2021] [Indexed: 11/25/2022]
Abstract
Reaching to grasp is an evolutionarily conserved behavior and a crucial part of the motor repertoire in mammals. As it is studied in the laboratory, reaching has become the prototypical example of dexterous forelimb movements, illuminating key principles of motor control throughout the spinal cord, brain, and peripheral nervous system. Here, we (1) review the motor elements or phases that comprise the reach, grasp, and retract movements of reaching behavior, (2) highlight the role of intersectional genetic tools in linking these movements to their neuronal substrates, (3) describe spinal cord cell types and their roles in skilled reaching, and (4) how descending pathways from the brain and the sensory systems contribute to skilled reaching. We emphasize that genetic perturbation experiments can pin-point the neuronal substrates of specific phases of reaching behavior.
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Affiliation(s)
- Fabricio do Couto Nicola
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, United States of America
| | - Isabelle Hua
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, United States of America
| | - Ariel J Levine
- Spinal Circuits and Plasticity Unit, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, United States of America.
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14
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Carver CM, DeWitt HR, Stoja AP, Shapiro MS. Blockade of TRPC Channels Limits Cholinergic-Driven Hyperexcitability and Seizure Susceptibility After Traumatic Brain Injury. Front Neurosci 2021; 15:681144. [PMID: 34489621 PMCID: PMC8416999 DOI: 10.3389/fnins.2021.681144] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 06/28/2021] [Indexed: 12/17/2022] Open
Abstract
We investigated the contribution of excitatory transient receptor potential canonical (TRPC) cation channels to posttraumatic hyperexcitability in the brain 7 days following controlled cortical impact model of traumatic brain injury (TBI) to the parietal cortex in male adult mice. We investigated if TRPC1/TRPC4/TRPC5 channel expression is upregulated in excitatory neurons after TBI in contribution to epileptogenic hyperexcitability in key hippocampal and cortical circuits that have substantial cholinergic innervation. This was tested by measuring TRPC1/TRPC4/TRPC5 protein and messenger RNA (mRNA) expression, assays of cholinergic function, neuronal Ca2+ imaging in brain slices, and seizure susceptibility after TBI. We found region-specific increases in expression of TRPC1, TRPC4, and TRPC5 subunits in the hippocampus and cortex following TBI. The dentate gyrus, CA3 region, and cortex all exhibited robust upregulation of TRPC4 mRNA and protein. TBI increased cFos activity in dentate gyrus granule cells (DGGCs) and layer 5 pyramidal neurons both at the time of TBI and 7 days post-TBI. DGGCs displayed greater magnitude and duration of acetylcholine-induced rises in intracellular Ca2+ in brain slices from mice subjected to TBI. The TBI mice also exhibited greater seizure susceptibility in response to pentylenetetrazol-induced kindling. Blockade of TRPC4/TRPC5 channels with M084 reduced neuronal hyperexcitation and impeded epileptogenic progression of kindling. We observed that the time-dependent upregulation of TRPC4/TRPC5-containing channels alters cholinergic responses and activity of principal neurons acting to increase proexcitatory sensitivity. The underlying mechanism includes acutely decreased acetylcholinesterase function, resulting in greater Gq/11-coupled muscarinic receptor activation of TRPC channels. Overall, our evidence suggests that TBI-induced plasticity of TRPC channels strongly contributes to overt hyperexcitability and primes the hippocampus and cortex for seizures.
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Affiliation(s)
- Chase M Carver
- Department of Cellular and Integrative Physiology, University of Texas Health San Antonio, San Antonio, TX, United States
| | - Haley R DeWitt
- Department of Cellular and Integrative Physiology, University of Texas Health San Antonio, San Antonio, TX, United States
| | - Aiola P Stoja
- Department of Cellular and Integrative Physiology, University of Texas Health San Antonio, San Antonio, TX, United States
| | - Mark S Shapiro
- Department of Cellular and Integrative Physiology, University of Texas Health San Antonio, San Antonio, TX, United States
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15
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Sun MR, Steward AC, Sweet EA, Martin AA, Lipinski RJ. Developmental malformations resulting from high-dose maternal tamoxifen exposure in the mouse. PLoS One 2021; 16:e0256299. [PMID: 34403436 PMCID: PMC8370643 DOI: 10.1371/journal.pone.0256299] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 08/03/2021] [Indexed: 12/27/2022] Open
Abstract
Tamoxifen is an estrogen receptor (ER) ligand with widespread use in clinical and basic research settings. Beyond its application in treating ER-positive cancer, tamoxifen has been co-opted into a powerful approach for temporal-specific genetic alteration. The use of tamoxifen-inducible Cre-recombinase mouse models to examine genetic, molecular, and cellular mechanisms of development and disease is now prevalent in biomedical research. Understanding off-target effects of tamoxifen will inform its use in both clinical and basic research applications. Here, we show that prenatal tamoxifen exposure can cause structural birth defects in the mouse. Administration of a single 200 mg/kg tamoxifen dose to pregnant wildtype C57BL/6J mice at gestational day 9.75 caused cleft palate and limb malformations in the fetuses, including posterior digit duplication, reduction, or fusion. These malformations were highly penetrant and consistent across independent chemical manufacturers. As opposed to 200 mg/kg, a single dose of 50 mg/kg tamoxifen at the same developmental stage did not result in overt structural malformations. Demonstrating that prenatal tamoxifen exposure at a specific time point causes dose-dependent developmental abnormalities, these findings argue for more considerate application of tamoxifen in Cre-inducible systems and further investigation of tamoxifen’s mechanisms of action.
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Affiliation(s)
- Miranda R. Sun
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Austin C. Steward
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Emma A. Sweet
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Alexander A. Martin
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Robert J. Lipinski
- Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America
- * E-mail:
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16
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De Boeck J, Verfaillie C. Doxycycline inducible overexpression systems: how to induce your gene of interest without inducing misinterpretations. Mol Biol Cell 2021; 32:1517-1522. [PMID: 34383558 PMCID: PMC8351744 DOI: 10.1091/mbc.e21-04-0177] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
The doxycycline inducible overexpression system is a highly flexible and widely used tool for both in vitro and in vivo studies. However, during the past decade, a handful of reports have explicitly called for caution when using this system. The raised concerns are based on the notion that doxycycline can impair mitochondrial function of mammalian cells and can alter properties such as cell proliferation. As such, experimental outcomes can be confounded with the side effects of doxycycline and valid interpretation can be seriously threatened. Today, no consensus seems to exist about how these problems should be prevented. Moreover, some of the strategies that have been used to cope with these difficulties can actually introduce additional problems that are related to genomic instability and genetic modification of the cells. Here, we elaborate on the above statements and clarify them by some basic examples taken from our personal wet-lab experience. As such, we provide a nuanced overview of the doxycycline inducible overexpression system, some of its limitations and how to deal with them.
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Affiliation(s)
- Jolan De Boeck
- Department of Development and Regeneration, Stem Cell Institute, KU Leuven, Leuven 3000, Belgium
| | - Catherine Verfaillie
- Department of Development and Regeneration, Stem Cell Institute, KU Leuven, Leuven 3000, Belgium
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17
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Wüst RCI, Coolen BF, Held NM, Daal MRR, Alizadeh Tazehkandi V, Baks-te Bulte L, Wiersma M, Kuster DWD, Brundel BJJM, van Weeghel M, Strijkers GJ, Houtkooper RH. The Antibiotic Doxycycline Impairs Cardiac Mitochondrial and Contractile Function. Int J Mol Sci 2021; 22:4100. [PMID: 33921053 PMCID: PMC8071362 DOI: 10.3390/ijms22084100] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/08/2021] [Accepted: 04/08/2021] [Indexed: 12/22/2022] Open
Abstract
Tetracycline antibiotics act by inhibiting bacterial protein translation. Given the bacterial ancestry of mitochondria, we tested the hypothesis that doxycycline-which belongs to the tetracycline class-reduces mitochondrial function, and results in cardiac contractile dysfunction in cultured H9C2 cardiomyoblasts, adult rat cardiomyocytes, in Drosophila and in mice. Ampicillin and carbenicillin were used as control antibiotics since these do not interfere with mitochondrial translation. In line with its specific inhibitory effect on mitochondrial translation, doxycycline caused a mitonuclear protein imbalance in doxycycline-treated H9C2 cells, reduced maximal mitochondrial respiration, particularly with complex I substrates, and mitochondria appeared fragmented. Flux measurements using stable isotope tracers showed a shift away from OXPHOS towards glycolysis after doxycycline exposure. Cardiac contractility measurements in adult cardiomyocytes and Drosophila melanogaster hearts showed an increased diastolic calcium concentration, and a higher arrhythmicity index. Systolic and diastolic dysfunction were observed after exposure to doxycycline. Mice treated with doxycycline showed mitochondrial complex I dysfunction, reduced OXPHOS capacity and impaired diastolic function. Doxycycline exacerbated diastolic dysfunction and reduced ejection fraction in a diabetes mouse model vulnerable for metabolic derangements. We therefore conclude that doxycycline impairs mitochondrial function and causes cardiac dysfunction.
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Affiliation(s)
- Rob C. I. Wüst
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (N.M.H.); (V.A.T.); (M.v.W.)
- Biomedical Engineering and Physics, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam UMC, 1105 AZ Amsterdam, The Netherlands; (B.F.C.); (M.R.R.D.); (G.J.S.)
- Laboratory for Myology, Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Amsterdam Movement Sciences, Vrije University Amsterdam, 1081 BT Amsterdam, The Netherlands
| | - Bram F. Coolen
- Biomedical Engineering and Physics, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam UMC, 1105 AZ Amsterdam, The Netherlands; (B.F.C.); (M.R.R.D.); (G.J.S.)
| | - Ntsiki M. Held
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (N.M.H.); (V.A.T.); (M.v.W.)
| | - Mariah R. R. Daal
- Biomedical Engineering and Physics, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam UMC, 1105 AZ Amsterdam, The Netherlands; (B.F.C.); (M.R.R.D.); (G.J.S.)
| | - Vida Alizadeh Tazehkandi
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (N.M.H.); (V.A.T.); (M.v.W.)
| | - Luciënne Baks-te Bulte
- Department of Physiology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, VU University Medical Center, 1081 HZ Amsterdam, The Netherlands; (L.B.-t.B.); (M.W.); (D.W.D.K.); (B.J.J.M.B.)
| | - Marit Wiersma
- Department of Physiology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, VU University Medical Center, 1081 HZ Amsterdam, The Netherlands; (L.B.-t.B.); (M.W.); (D.W.D.K.); (B.J.J.M.B.)
| | - Diederik W. D. Kuster
- Department of Physiology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, VU University Medical Center, 1081 HZ Amsterdam, The Netherlands; (L.B.-t.B.); (M.W.); (D.W.D.K.); (B.J.J.M.B.)
| | - Bianca J. J. M. Brundel
- Department of Physiology, Amsterdam Cardiovascular Sciences, Amsterdam UMC, VU University Medical Center, 1081 HZ Amsterdam, The Netherlands; (L.B.-t.B.); (M.W.); (D.W.D.K.); (B.J.J.M.B.)
| | - Michel van Weeghel
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (N.M.H.); (V.A.T.); (M.v.W.)
| | - Gustav J. Strijkers
- Biomedical Engineering and Physics, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam UMC, 1105 AZ Amsterdam, The Netherlands; (B.F.C.); (M.R.R.D.); (G.J.S.)
- Department of Radiology, Translational and Molecular Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Riekelt H. Houtkooper
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands; (N.M.H.); (V.A.T.); (M.v.W.)
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18
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Gouveia E Melo R, Rodrigues M, Caldeira D, Alves M, Fernandes E Fernandes R, Mendes Pedro L. Doxycycline is not Effective in Reducing Abdominal Aortic Aneurysm Growth: A Mini Systematic Review and Meta-Analysis of Randomised Controlled Trials. Eur J Vasc Endovasc Surg 2021; 61:863-864. [PMID: 33674154 DOI: 10.1016/j.ejvs.2021.01.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/23/2020] [Accepted: 01/14/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Ryan Gouveia E Melo
- Lisbon Medical Academic Centre (Centro Académico de Medicina de Lisboa - CAML), Lisbon, Portugal.
| | - Marta Rodrigues
- Lisbon Medical Academic Centre (Centro Académico de Medicina de Lisboa - CAML), Lisbon, Portugal
| | - Daniel Caldeira
- Lisbon Medical Academic Centre (Centro Académico de Medicina de Lisboa - CAML), Lisbon, Portugal
| | - Mariana Alves
- Lisbon Medical Academic Centre (Centro Académico de Medicina de Lisboa - CAML), Lisbon, Portugal
| | | | - Luís Mendes Pedro
- Lisbon Medical Academic Centre (Centro Académico de Medicina de Lisboa - CAML), Lisbon, Portugal
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19
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Liu C, Dai SK, Shi RX, He XC, Wang YY, He BD, Sun XW, Du HZ, Liu CM, Teng ZQ. Transcriptional profiling of microglia in the injured brain reveals distinct molecular features underlying neurodegeneration. Glia 2021; 69:1292-1306. [PMID: 33492723 DOI: 10.1002/glia.23966] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 12/30/2020] [Accepted: 01/06/2021] [Indexed: 12/30/2022]
Abstract
Neurotrauma has been recognized as a risk factor for neurodegenerative diseases, and sex difference of the incidence and outcome of neurodegenerative diseases has long been recognized. Past studies suggest that microglia could play a versatile role in both health and disease. So far, the microglial mechanisms underlying neurodegeneration and potentially lead to sex-specific therapies are still very open. Here we applied whole transcriptome analysis of microglia acutely isolated at different timepoints after a cortical stab wound injury to gain insight into genes that might be dysregulated and transcriptionally different between males and females after cortical injury. We found that microglia displayed distinct temporal and sexual molecular signatures of transcriptome after cortical injury. Hypotheses and gene candidates that we presented in the present study could be worthy to be examined to explore the roles of microglia in neurotrauma and in sex-biased neurodegenerative diseases.
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Affiliation(s)
- Cong Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Shang-Kun Dai
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Ruo-Xi Shi
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Xuan-Cheng He
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
| | - Ying-Ying Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Bao-Dong He
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Xiao-Wen Sun
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China
| | - Hong-Zhen Du
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
| | - Chang-Mei Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
| | - Zhao-Qian Teng
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,Savaid Medical School, University of Chinese Academy of Sciences, Beijing, China.,Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, China
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