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Brojakowska A, Jackson CJ, Bisserier M, Khlgatian MK, Jagana V, Eskandari A, Grano C, Blattnig SR, Zhang S, Fish KM, Chepurko V, Chepurko E, Gillespie V, Dai Y, Kumar Rai A, Garikipati VNS, Hadri L, Kishore R, Goukassian DA. Lifetime evaluation of left ventricular structure and function in male ApoE null mice after gamma and space-type radiation exposure. Front Physiol 2023; 14:1292033. [PMID: 38054039 PMCID: PMC10694360 DOI: 10.3389/fphys.2023.1292033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 11/01/2023] [Indexed: 12/07/2023] Open
Abstract
The space radiation (IR) environment contains high charge and energy (HZE) nuclei emitted from galactic cosmic rays with the ability to overcome current shielding strategies, posing increased IR-induced cardiovascular disease risks for astronauts on prolonged space missions. Little is known about the effect of 5-ion simplified galactic cosmic ray simulation (simGCRsim) exposure on left ventricular (LV) function. Three-month-old, age-matched male Apolipoprotein E (ApoE) null mice were irradiated with 137Cs gamma (γ; 100, 200, and 400 cGy) and simGCRsim (50, 100, 150 cGy all at 500 MeV/nucleon (n)). LV function was assessed using transthoracic echocardiography at early/acute (14 and 28 days) and late/degenerative (365, 440, and 660 days) times post-irradiation. As early as 14 and 28-days post IR, LV systolic function was reduced in both IR groups across all doses. At 14 days post-IR, 150 cGy simGCRsim-IR mice had decreased diastolic wall strain (DWS), suggesting increased myocardial stiffness. This was also observed later in 100 cGy γ-IR mice at 28 days. At later stages, a significant decrease in LV systolic function was observed in the 400 cGy γ-IR mice. Otherwise, there was no difference in the LV systolic function or structure at the remaining time points across the IR groups. We evaluated the expression of genes involved in hemodynamic stress, cardiac remodeling, inflammation, and calcium handling in LVs harvested 28 days post-IR. At 28 days post-IR, there is increased expression of Bnp and Ncx in both IR groups at the lowest doses, suggesting impaired function contributes to hemodynamic stress and altered calcium handling. The expression of Gals3 and β-Mhc were increased in simGCRsim and γ-IR mice respectively, suggesting there may be IR-specific cardiac remodeling. IR groups were modeled to calculate the Relative Biological Effectiveness (RBE) and Radiation Effects Ratio (RER). No lower threshold was determined using the observed dose-response curves. These findings do not exclude the possibility of the existence of a lower IR threshold or the presence of IR-induced cardiovascular disease (CVD) when combined with additional space travel stressors, e.g., microgravity.
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Affiliation(s)
- Agnieszka Brojakowska
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Yale School of Medicine, New Haven, CT, United States
| | | | | | | | - Vineeta Jagana
- New York Medical College, Valhalla, New York, United States
| | - Abrisham Eskandari
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Cynthia Grano
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Steve R. Blattnig
- National Aeronautics and Space Administration, Hampton, VA, United States
| | - Shihong Zhang
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Kenneth M. Fish
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Vadim Chepurko
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Elena Chepurko
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Virginia Gillespie
- Center for Comparative Medicine and Surgery, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Ying Dai
- Center for Comparative Medicine and Surgery, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Amit Kumar Rai
- Aging and Cardiovascular Discovery Center, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | | | - Lahouaria Hadri
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- Center of Excellence for Translational Medicine and Pharmacology/Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Raj Kishore
- Department of Cardiovascular Sciences, Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - David A. Goukassian
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
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Brojakowska A, Jackson CJ, Bisserier M, Khlgatian MK, Grano C, Blattnig SR, Zhang S, Fish KM, Chepurko V, Chepurko E, Gillespie V, Dai Y, Lee B, Garikipati VNS, Hadri L, Kishore R, Goukassian DA. Lifetime Evaluation of Left Ventricular Structure and Function in Male C57BL/6J Mice after Gamma and Space-Type Radiation Exposure. Int J Mol Sci 2023; 24:5451. [PMID: 36982525 PMCID: PMC10049327 DOI: 10.3390/ijms24065451] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/06/2023] [Accepted: 03/09/2023] [Indexed: 03/16/2023] Open
Abstract
The lifetime effects of space irradiation (IR) on left ventricular (LV) function are unknown. The cardiac effects induced by space-type IR, specifically 5-ion simplified galactic cosmic ray simulation (simGCRsim), are yet to be discovered. Three-month-old, age-matched, male C57BL/6J mice were irradiated with 137Cs gamma (γ; 100, 200 cGy) and simGCRsim (50 and 100 cGy). LV function was assessed via transthoracic echocardiography at 14 and 28 days (early), and at 365, 440, and 660 (late) days post IR. We measured the endothelial function marker brain natriuretic peptide in plasma at three late timepoints. We assessed the mRNA expression of the genes involved in cardiac remodeling, fibrosis, inflammation, and calcium handling in LVs harvested at 660 days post IR. All IR groups had impaired global LV systolic function at 14, 28, and 365 days. At 660 days, 50 cGy simGCRsim-IR mice exhibited preserved LV systolic function with altered LV size and mass. At this timepoint, the simGCRsim-IR mice had elevated levels of cardiac fibrosis, inflammation, and hypertrophy markers Tgfβ1, Mcp1, Mmp9, and βmhc, suggesting that space-type IR may induce the cardiac remodeling processes that are commonly associated with diastolic dysfunction. IR groups showing statistical significance were modeled to calculate the Relative Biological Effectiveness (RBE) and Radiation Effects Ratio (RER). The observed dose-response shape did not indicate a lower threshold at these IR doses. A single full-body IR at doses of 100-200 cGy for γ-IR, and 50-100 cGy for simGCRsim-IR decreases the global LV systolic function in WT mice as early as 14 and 28 days after exposure, and at 660 days post IR. Interestingly, there is an intermediate time point (365 days) where the impairment in LV function is observed. These findings do not exclude the possibility of increased acute or degenerative cardiovascular disease risks at lower doses of space-type IR, and/or when combined with other space travel-associated stressors such as microgravity.
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Affiliation(s)
- Agnieszka Brojakowska
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | | | - Malik Bisserier
- Department of Cell Biology and Anatomy and Physiology, New York Medical College, Valhalla, NY 10595, USA
| | - Mary K. Khlgatian
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Cynthia Grano
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Steve R. Blattnig
- National Aeronautics and Space Administration, Hampton, VA 23669, USA
| | - Shihong Zhang
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Kenneth M. Fish
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Vadim Chepurko
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Elena Chepurko
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Virginia Gillespie
- Center for Comparative Medicine and Surgery, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Ying Dai
- Center for Comparative Medicine and Surgery, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Brooke Lee
- Department of Emergency Medicine, Dorothy M. Davis Heart Lung and Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Venkata Naga Srikanth Garikipati
- Department of Emergency Medicine, Dorothy M. Davis Heart Lung and Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA
| | - Lahouaria Hadri
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
- Center of Excellence for Translational Medicine and Pharmacology, Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Raj Kishore
- Department of Cardiovascular Sciences, Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA
| | - David A. Goukassian
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
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3
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Brojakowska A, Kour A, Thel MC, Park E, Bisserier M, Garikipati VNS, Hadri L, Mills PJ, Walsh K, Goukassian DA. Author Correction: Retrospective analysis of somatic mutations and clonal hematopoiesis in astronauts. Commun Biol 2022; 5:1078. [PMID: 36217020 PMCID: PMC9550764 DOI: 10.1038/s42003-022-04071-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Grants] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Agnieszka Brojakowska
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Anupreet Kour
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Mark Charles Thel
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Eunbee Park
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Malik Bisserier
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Venkata Naga Srikanth Garikipati
- Dorothy M. Davis Heart Lung and Research Institute and Department of Emergency Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Lahouaria Hadri
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Paul J Mills
- Center of Excellence for Research and Training in Integrative Health, University of California San Diego, La Jolla, CA, USA
| | - Kenneth Walsh
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - David A Goukassian
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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Brojakowska A, Kour A, Thel MC, Park E, Bisserier M, Garikipati VNS, Hadri L, Mills PJ, Walsh K, Goukassian DA. Retrospective analysis of somatic mutations and clonal hematopoiesis in astronauts. Commun Biol 2022; 5:828. [PMID: 35978153 PMCID: PMC9385668 DOI: 10.1038/s42003-022-03777-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 07/27/2022] [Indexed: 11/26/2022] Open
Abstract
With planned deep space and commercial spaceflights, gaps remain to address health risks in astronauts. Multiple studies have shown associations between clonal expansion of hematopoietic cells with hematopoietic malignancies and cardiometabolic disease. This expansion of clones in the absence of overt hematopoietic disorders is termed clonal hematopoiesis (CH) of indeterminate potential (CHIP). Using deep, error-corrected, targeted DNA sequencing we assayed for somatic mutations in CH-driver genes in peripheral blood mononuclear cells isolated from de-identified blood samples collected from 14 astronauts who flew Shuttle missions between 1998-2001. We identified 34 nonsynonymous mutations of relatively low variant allele fraction in 17 CH-driver genes, with the most prevalent mutations in TP53 and DNMT3A. The presence of these small clones in the blood of relatively young astronaut cohort warrants further retrospective and prospective investigation of their clinical relevance and potential application in monitoring astronaut's health.
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Affiliation(s)
- Agnieszka Brojakowska
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Anupreet Kour
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Mark Charles Thel
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Eunbee Park
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Malik Bisserier
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Venkata Naga Srikanth Garikipati
- Dorothy M. Davis Heart Lung and Research Institute and Department of Emergency Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Lahouaria Hadri
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Paul J Mills
- Center of Excellence for Research and Training in Integrative Health, University of California San Diego, La Jolla, CA, USA
| | - Kenneth Walsh
- Hematovascular Biology Center, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - David A Goukassian
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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5
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Rai AK, Lee B, Sanghvi S, Tomar D, Chandrasekera D, Gopala Krishna S, Ponnalagu D, Khan M, Singh H, Nagareddy PR, Goukassian DA, Katare R, Koch WJ, Kishore R, Garikipati V. Abstract P1036: Role Of Mitochondrial Ribosomal Protein L7/l12 (mrpl12) In Diabetic Ischemic Heart Disease. Circ Res 2022. [DOI: 10.1161/res.131.suppl_1.p1036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Myocardial infarction (MI) is a significant cause of death in diabetic patients. In addition, growing evidence suggests that mitochondrial dysfunction contributes to heart failure in diabetes. However, the molecular mechanisms of mitochondrial dysfunction mediating heart failure in diabetes are still poorly understood. The current study aimed to investigate the role of mitochondrial ribosomal protein L7/L12 (MRPL12) in mouse models of type II diabetes (db/db mice)and high-fat diet (HFD) mice with or without induction of MI and human hearts with or without diabetes (n=7) .Data analysis revealed an increase in MRPL12 levels in the LV tissue of HFD fed mice with MI than in LV tissues of low-fat diet-fed mice with MI, whereas MRPL12 levels remained unchanged in the db/db mice with MI. Intriguingly, we found increased MRPL12 levels in atrial appendage tissue of diabetic patients with ischemic heart disease compared to non-diabetic patients. We utilized human cardiomyocyte cell-line (AC-16) as surrogate models to delineate the mechanisms; surprisingly, adenovirus-mediated overexpression of MRPL12 with or without hyperglycemia in AC-16 cardiomyocytes does not affect mitochondrial OXPHOS . In addition, overexpression of MRPL12 had no effect on the mitochondrial ROS, mitochondrial membrane depolarization, and caspase activity in AC-16 cardiomyocytes. Whereas RNA interference (RNAi)-mediated MRPL12 silencing remarkedly reduced mitochondrial oxidative phosphorylation in AC-16 cells without any stress. In addition, knockdown of MRPL12 increased mitochondrial membrane depolarization mitochondrial ROS and reduced maximal respiratory capacity of mitochondria without any stress. Overall, our results provide new insights into the role of MRPL12 in the pathophysiology of MI in diabetes.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Raj Kishore
- TEMPLE UNIVERSITY SCHOOL OF MED, Philadelphia, PA
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Rai A, Rajan KS, Bisserier M, Brojakowska A, Sebastian A, Evans A, Coleman M, Mills P, Arakelyan AA, Uchida S, Hadri L, Goukassian DA, Garikipati V. Abstract P1115: SnoRNAs As Potential Biomarkers For Assessment Of Health Risks In Astronauts. Circ Res 2022. [DOI: 10.1161/res.131.suppl_1.p1115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
During spaceflight, astronauts are exposed to various physiological and psychological stressors, such as microgravity, sleep deprivation, isolation, confinement, and high ionizing radiation have shown adverse health effects. Therefore, there is an unmet need to develop novel diagnostic tools to predict early alterations in astronauts' health. Small nucleolar RNA (snoRNA) is a type of short ncRNAs (60-300 nucleotides) known to guide 2’-O-methylation (Nm) or pseudouridine (ψ) on ribosomal RNA (rRNA), snRNA, or mRNA. Emerging evidence suggests that dysregulated snoRNAs may be key players in regulating fundamental cellular mechanisms and the pathogenesis of cancer, heart, and neurological disease. Therefore, we sought to determine whether the spaceflight-induced snoRNA changes in plasma extracellular vesicles (EV) and astronaut's peripheral blood mononuclear cells (PBMCs) can be utilized as potential biomarkers. Using unbiased small RNA sequencing (sRNAseq), we evaluated the EV snoRNA changes in peripheral blood (PB) plasma of astronauts (n=5/group) who underwent median 12-day long Shuttle missions between 1998-2001. Using stringent cutoff (> log 2-fold change, FDR < 0.05), we detected 20 down-regulated snoRNAs and 10 upregulated PB-EVs at R+3 compared to L-10. qPCR validation revealed that SNORA74A was significantly down-regulated at R+3 compared to L-10. We next determined snoRNA expression levels in astronauts' PBMCs at R+3 and L-10 (n=6/group). qPCR analysis further confirmed a significant increase in SNORA19 and SNORA47 in astronauts' PBMCs at R+3 compared to L-10 Notably, many downregulated snoRNA-guided rRNA modifications, including four Nms and five ψs. Our findings unveiled that spaceflight induced changes in EV and PBMCs snoRNA expression, thus suggesting snoRNAs may serve as novel biomarkers for monitoring astronauts' health.
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Affiliation(s)
- Amit Rai
- The Ohio State Univ, Columbus, OH
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Rai AK, Rajan KS, Bisserier M, Brojakowska A, Sebastian A, Evans AC, Coleman MA, Mills PJ, Arakelyan A, Uchida S, Hadri L, Goukassian DA, Garikipati VNS. Spaceflight-Associated Changes of snoRNAs in Peripheral Blood Mononuclear Cells and Plasma Exosomes—A Pilot Study. Front Cardiovasc Med 2022; 9:886689. [PMID: 35811715 PMCID: PMC9267956 DOI: 10.3389/fcvm.2022.886689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 06/01/2022] [Indexed: 11/13/2022] Open
Abstract
During spaceflight, astronauts are exposed to various physiological and psychological stressors that have been associated with adverse health effects. Therefore, there is an unmet need to develop novel diagnostic tools to predict early alterations in astronauts’ health. Small nucleolar RNA (snoRNA) is a type of short non-coding RNA (60–300 nucleotides) known to guide 2′-O-methylation (Nm) or pseudouridine (ψ) of ribosomal RNA (rRNA), small nuclear RNA (snRNA), or messenger RNA (mRNA). Emerging evidence suggests that dysregulated snoRNAs may be key players in regulating fundamental cellular mechanisms and in the pathogenesis of cancer, heart, and neurological disease. Therefore, we sought to determine whether the spaceflight-induced snoRNA changes in astronaut’s peripheral blood (PB) plasma extracellular vesicles (PB-EV) and peripheral blood mononuclear cells (PBMCs). Using unbiased small RNA sequencing (sRNAseq), we evaluated changes in PB-EV snoRNA content isolated from astronauts (n = 5/group) who underwent median 12-day long Shuttle missions between 1998 and 2001. Using stringent cutoff (fold change > 2 or log2-fold change >1, FDR < 0.05), we detected 21 down-and 9—up-regulated snoRNAs in PB-EVs 3 days after return (R + 3) compared to 10 days before launch (L-10). qPCR validation revealed that SNORA74A was significantly down-regulated at R + 3 compared to L-10. We next determined snoRNA expression levels in astronauts’ PBMCs at R + 3 and L-10 (n = 6/group). qPCR analysis further confirmed a significant increase in SNORA19 and SNORA47 in astronauts’ PBMCs at R + 3 compared to L-10. Notably, many downregulated snoRNA-guided rRNA modifications, including four Nms and five ψs. Our findings revealed that spaceflight induced changes in PB-EV and PBMCs snoRNA expression, thus suggesting snoRNAs may serve as potential novel biomarkers for monitoring astronauts’ health.
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Affiliation(s)
- Amit Kumar Rai
- Department of Emergency Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - K. Shanmugha Rajan
- Department of Chemical and Structural Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Malik Bisserier
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Agnieszka Brojakowska
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Aimy Sebastian
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, United States
| | - Angela C. Evans
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, United States
- Department of Radiation Oncology, University of California, Davis, Sacramento, CA, United States
| | - Matthew A. Coleman
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, United States
- Department of Radiation Oncology, University of California, Davis, Sacramento, CA, United States
| | - Paul J. Mills
- Center of Excellence for Research and Training in Integrative Health, University of California, San Diego, La Jolla, CA, United States
| | - Arsen Arakelyan
- Group of Bioinformatics, Institute of Molecular Biology, National Academy of Sciences of the Republic of Armenia, Yerevan, Armenia
| | - Shizuka Uchida
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, Copenhagen, Denmark
| | - Lahouaria Hadri
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - David A. Goukassian
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
- *Correspondence: David A. Goukassian,
| | - Venkata Naga Srikanth Garikipati
- Department of Emergency Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Dorothy M. Davis Heart Lung and Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Venkata Naga Srikanth Garikipati,
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Bisserier M, Brojakowska A, Saffran N, Rai AK, Lee B, Coleman M, Sebastian A, Evans A, Mills PJ, Addya S, Arakelyan A, Garikipati VNS, Hadri L, Goukassian DA. Astronauts Plasma-Derived Exosomes Induced Aberrant EZH2-Mediated H3K27me3 Epigenetic Regulation of the Vitamin D Receptor. Front Cardiovasc Med 2022; 9:855181. [PMID: 35783863 PMCID: PMC9243458 DOI: 10.3389/fcvm.2022.855181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 05/25/2022] [Indexed: 11/17/2022] Open
Abstract
There are unique stressors in the spaceflight environment. Exposure to such stressors may be associated with adverse effects on astronauts' health, including increased cancer and cardiovascular disease risks. Small extracellular vesicles (sEVs, i.e., exosomes) play a vital role in intercellular communication and regulate various biological processes contributing to their role in disease pathogenesis. To assess whether spaceflight alters sEVs transcriptome profile, sEVs were isolated from the blood plasma of 3 astronauts at two different time points: 10 days before launch (L-10) and 3 days after return (R+3) from the Shuttle mission. AC16 cells (human cardiomyocyte cell line) were treated with L-10 and R+3 astronauts-derived exosomes for 24 h. Total RNA was isolated and analyzed for gene expression profiling using Affymetrix microarrays. Enrichment analysis was performed using Enrichr. Transcription factor (TF) enrichment analysis using the ENCODE/ChEA Consensus TF database identified gene sets related to the polycomb repressive complex 2 (PRC2) and Vitamin D receptor (VDR) in AC16 cells treated with R+3 compared to cells treated with L-10 astronauts-derived exosomes. Further analysis of the histone modifications using datasets from the Roadmap Epigenomics Project confirmed enrichment in gene sets related to the H3K27me3 repressive mark. Interestingly, analysis of previously published H3K27me3–chromatin immunoprecipitation sequencing (ChIP-Seq) ENCODE datasets showed enrichment of H3K27me3 in the VDR promoter. Collectively, our results suggest that astronaut-derived sEVs may epigenetically repress the expression of the VDR in human adult cardiomyocytes by promoting the activation of the PRC2 complex and H3K27me3 levels.
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Affiliation(s)
- Malik Bisserier
- Icahn School of Medicine at Mount Sinai, Cardiovascular Research Institute, New York, NY, United States
| | - Agnieszka Brojakowska
- Icahn School of Medicine at Mount Sinai, Cardiovascular Research Institute, New York, NY, United States
| | - Nathaniel Saffran
- Icahn School of Medicine at Mount Sinai, Cardiovascular Research Institute, New York, NY, United States
| | - Amit Kumar Rai
- Department of Emergency Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Brooke Lee
- Department of Emergency Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Matthew Coleman
- Lawrence Livermore National Laboratory, Livermore, CA, United States
- Department of Radiation Oncology, University of California, Davis, Sacramento, CA, United States
| | - Aimy Sebastian
- Lawrence Livermore National Laboratory, Livermore, CA, United States
| | - Angela Evans
- Lawrence Livermore National Laboratory, Livermore, CA, United States
- Department of Radiation Oncology, University of California, Davis, Sacramento, CA, United States
| | - Paul J. Mills
- Center of Excellence for Research and Training in Integrative Health, University of California, San Diego, La Jolla, CA, United States
| | - Sankar Addya
- Kimmel Cancer Center, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, United States
| | - Arsen Arakelyan
- Bioinformatics Group, Institute of Molecular Biology, National Academy of Sciences of the Republic of Armenia (NAS RA), Yerevan, Armenia
- Department of Bioengineering, Bioinformatics, and Molecular Biology, Russian-Armenian University, Yerevan, Armenia
| | - Venkata Naga Srikanth Garikipati
- Department of Emergency Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, United States
- Dorothy M. Davis Heart Lung and Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Lahouaria Hadri
- Icahn School of Medicine at Mount Sinai, Cardiovascular Research Institute, New York, NY, United States
- Lahouaria Hadri
| | - David A. Goukassian
- Icahn School of Medicine at Mount Sinai, Cardiovascular Research Institute, New York, NY, United States
- *Correspondence: David A. Goukassian
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Bisserier M, Saffran N, Brojakowska A, Sebastian A, Evans AC, Coleman MA, Walsh K, Mills PJ, Garikipati VNS, Arakelyan A, Hadri L, Goukassian DA. Emerging Role of Exosomal Long Non-coding RNAs in Spaceflight-Associated Risks in Astronauts. Front Genet 2022; 12:812188. [PMID: 35111205 PMCID: PMC8803151 DOI: 10.3389/fgene.2021.812188] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 12/21/2021] [Indexed: 12/27/2022] Open
Abstract
During spaceflight, astronauts are exposed to multiple unique environmental factors, particularly microgravity and ionizing radiation, that can cause a range of harmful health consequences. Over the past decades, increasing evidence demonstrates that the space environment can induce changes in gene expression and RNA processing. Long non-coding RNA (lncRNA) represent an emerging area of focus in molecular biology as they modulate chromatin structure and function, the transcription of neighboring genes, and affect RNA splicing, stability, and translation. They have been implicated in cancer development and associated with diverse cardiovascular conditions and associated risk factors. However, their role on astronauts' health after spaceflight remains poorly understood. In this perspective article, we provide new insights into the potential role of exosomal lncRNA after spaceflight. We analyzed the transcriptional profile of exosomes isolated from peripheral blood plasma of three astronauts who flew on various Shuttle missions between 1998-2001 by RNA-sequencing. Computational analysis of the transcriptome of these exosomes identified 27 differentially expressed lncRNAs with a Log2 fold change, with molecular, cellular, and clinical implications.
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Affiliation(s)
- Malik Bisserier
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Nathaniel Saffran
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Agnieszka Brojakowska
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Aimy Sebastian
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, United States
| | - Angela Clare Evans
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, United States
- Department of Radiation Oncology, University of California, Davis, Sacramento, CA, United States
| | - Matthew A. Coleman
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, United States
- Department of Radiation Oncology, University of California, Davis, Sacramento, CA, United States
| | - Kenneth Walsh
- School of Medicine, University of Virginia, Charlottesville, VA, United States
| | - Paul J. Mills
- Center of Excellence for Research and Training in Integrative Health, University of California, San Diego, San Diego, CA, United States
| | - Venkata Naga Srikanth Garikipati
- Department of Emergency Medicine, Dorothy M. Davis Heart Lung and Research Institute, Ohio State University Wexner Medical Center, Columbus, OH, United States
| | - Arsen Arakelyan
- Bioinformatics Group, The Institute of Molecular Biology, The National Academy of Sciences of the Republic of Armenia, Yerevan, Armenia
| | - Lahouaria Hadri
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - David A. Goukassian
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
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10
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Bisserier M, Shanmughapriya S, Rai AK, Gonzalez C, Brojakowska A, Garikipati VNS, Madesh M, Mills PJ, Walsh K, Arakelyan A, Kishore R, Hadri L, Goukassian DA. Cell-Free Mitochondrial DNA as a Potential Biomarker for Astronauts' Health. J Am Heart Assoc 2021; 10:e022055. [PMID: 34666498 PMCID: PMC8751818 DOI: 10.1161/jaha.121.022055] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Space travel–associated stressors such as microgravity or radiation exposure have been reported in astronauts after short‐ and long‐duration missions aboard the International Space Station. Despite risk mitigation strategies, adverse health effects remain a concern. Thus, there is a need to develop new diagnostic tools to facilitate early detection of physiological stress. Methods and Results We measured the levels of circulating cell‐free mitochondrial DNA in blood plasma of 14 astronauts 10 days before launch, the day of landing, and 3 days after return. Our results revealed a significant increase of cell‐free mitochondrial DNA in the plasma on the day of landing and 3 days after return with vast ~2 to 355‐fold interastronaut variability. In addition, gene expression analysis of peripheral blood mononuclear cells revealed a significant increase in markers of inflammation, oxidative stress, and DNA damage. Conclusions Our study suggests that cell‐free mitochondrial DNA abundance might be a biomarker of stress or immune response related to microgravity, radiation, and other environmental factors during space flight.
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Affiliation(s)
- Malik Bisserier
- Cardiovascular Research Institute Icahn School of Medicine at Mount Sinai New York NY
| | - Santhanam Shanmughapriya
- Department of Cellular and Molecular Physiology Heart and Vascular Institute PennState University Hershey PA
| | - Amit Kumar Rai
- Department of Emergency Medicine Dorothy M. Davis Heart Lung and Research InstituteOhio State University Wexner Medical Center Columbus OH
| | - Carolina Gonzalez
- Center for Precision Medicine University of Texas Health San Antonio San Antonio TX
| | - Agnieszka Brojakowska
- Cardiovascular Research Institute Icahn School of Medicine at Mount Sinai New York NY
| | - Venkata Naga Srikanth Garikipati
- Department of Emergency Medicine Dorothy M. Davis Heart Lung and Research InstituteOhio State University Wexner Medical Center Columbus OH
| | - Muniswamy Madesh
- Center for Precision Medicine University of Texas Health San Antonio San Antonio TX
| | - Paul J Mills
- Center of Excellence for Research and Training in Integrative Health University of California San Diego La Jolla CA
| | - Kenneth Walsh
- Robert M. Berne Cardiovascular Research Center University of Virginia Charlottesville VA
| | - Arsen Arakelyan
- Bioinformatics Group The Institute of Molecular Biology The National Academy of Sciences of the Republic of Armenia Yerevan Armenia
| | - Raj Kishore
- Center for Translation Medicine Temple University Philadelphia PA
| | - Lahouaria Hadri
- Cardiovascular Research Institute Icahn School of Medicine at Mount Sinai New York NY
| | - David A Goukassian
- Cardiovascular Research Institute Icahn School of Medicine at Mount Sinai New York NY
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11
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Bisserier M, Katz MG, Bueno-Beti C, Brojakowska A, Zhang S, Gubara S, Kohlbrenner E, Fazal S, Fargnoli A, Dorfmuller P, Humbert M, Hata A, Goukassian DA, Sassi Y, Hadri L. Combination Therapy with STAT3 Inhibitor Enhances SERCA2a-Induced BMPR2 Expression and Inhibits Pulmonary Arterial Hypertension. Int J Mol Sci 2021; 22:ijms22179105. [PMID: 34502015 PMCID: PMC8431626 DOI: 10.3390/ijms22179105] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 08/16/2021] [Indexed: 12/12/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is a devastating lung disease characterized by the progressive obstruction of the distal pulmonary arteries (PA). Structural and functional alteration of pulmonary artery smooth muscle cells (PASMC) and endothelial cells (PAEC) contributes to PA wall remodeling and vascular resistance, which may lead to maladaptive right ventricular (RV) failure and, ultimately, death. Here, we found that decreased expression of sarcoplasmic/endoplasmic reticulum Ca2+ ATPase 2a (SERCA2a) in the lung samples of PAH patients was associated with the down-regulation of bone morphogenetic protein receptor type 2 (BMPR2) and the activation of signal transducer and activator of transcription 3 (STAT3). Our results showed that the antiproliferative properties of SERCA2a are mediated through the STAT3/BMPR2 pathway. At the molecular level, transcriptome analysis of PASMCs co-overexpressing SERCA2a and BMPR2 identified STAT3 amongst the most highly regulated transcription factors. Using a specific siRNA and a potent pharmacological STAT3 inhibitor (STAT3i, HJC0152), we found that SERCA2a potentiated BMPR2 expression by repressing STAT3 activity in PASMCs and PAECs. In vivo, we used a validated and efficient model of severe PAH induced by unilateral left pneumonectomy combined with monocrotaline (PNT/MCT) to further evaluate the therapeutic potential of single and combination therapies using adeno-associated virus (AAV) technology and a STAT3i. We found that intratracheal delivery of AAV1 encoding SERCA2 or BMPR2 alone or STAT3i was sufficient to reduce the mean PA pressure and vascular remodeling while improving RV systolic pressures, RV ejection fraction, and cardiac remodeling. Interestingly, we found that combined therapy of AAV1.hSERCA2a with AAV1.hBMPR2 or STAT3i enhanced the beneficial effects of SERCA2a. Finally, we used cardiac magnetic resonance imaging to measure RV function and found that therapies using AAV1.hSERCA2a alone or combined with STAT3i significantly inhibited RV structural and functional changes in PNT/MCT-induced PAH. In conclusion, our study demonstrated that combination therapies using SERCA2a gene transfer with a STAT3 inhibitor could represent a new promising therapeutic alternative to inhibit PAH and to restore BMPR2 expression by limiting STAT3 activity.
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Affiliation(s)
- Malik Bisserier
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.G.K.); (C.B.-B.); (A.B.); (S.Z.); (S.G.); (E.K.); (S.F.); (A.F.); (D.A.G.); (Y.S.)
- Correspondence: (M.B.); (L.H.)
| | - Michael G. Katz
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.G.K.); (C.B.-B.); (A.B.); (S.Z.); (S.G.); (E.K.); (S.F.); (A.F.); (D.A.G.); (Y.S.)
| | - Carlos Bueno-Beti
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.G.K.); (C.B.-B.); (A.B.); (S.Z.); (S.G.); (E.K.); (S.F.); (A.F.); (D.A.G.); (Y.S.)
| | - Agnieszka Brojakowska
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.G.K.); (C.B.-B.); (A.B.); (S.Z.); (S.G.); (E.K.); (S.F.); (A.F.); (D.A.G.); (Y.S.)
| | - Shihong Zhang
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.G.K.); (C.B.-B.); (A.B.); (S.Z.); (S.G.); (E.K.); (S.F.); (A.F.); (D.A.G.); (Y.S.)
| | - Sarah Gubara
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.G.K.); (C.B.-B.); (A.B.); (S.Z.); (S.G.); (E.K.); (S.F.); (A.F.); (D.A.G.); (Y.S.)
| | - Erik Kohlbrenner
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.G.K.); (C.B.-B.); (A.B.); (S.Z.); (S.G.); (E.K.); (S.F.); (A.F.); (D.A.G.); (Y.S.)
| | - Shahood Fazal
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.G.K.); (C.B.-B.); (A.B.); (S.Z.); (S.G.); (E.K.); (S.F.); (A.F.); (D.A.G.); (Y.S.)
| | - Anthony Fargnoli
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.G.K.); (C.B.-B.); (A.B.); (S.Z.); (S.G.); (E.K.); (S.F.); (A.F.); (D.A.G.); (Y.S.)
| | - Peter Dorfmuller
- Department of Pathology, University Hospital of Giessen and Marburg (UKGM), Langhansstrasse 10, 35392 Giessen, Germany;
| | - Marc Humbert
- Assistance Publique-Hôpitaux de Paris (AP-HP), Service de Pneumologie et Soins Intensifs Respiratoires, Centre de Référence de l’Hypertension Pulmonaire, Hôpital Bicêtre, 94270 Le Kremlin-Bicêtre, France;
| | - Akiko Hata
- Cardiovascular Research Institute, University of California, San Francisco, CA 94143, USA;
| | - David A. Goukassian
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.G.K.); (C.B.-B.); (A.B.); (S.Z.); (S.G.); (E.K.); (S.F.); (A.F.); (D.A.G.); (Y.S.)
| | - Yassine Sassi
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.G.K.); (C.B.-B.); (A.B.); (S.Z.); (S.G.); (E.K.); (S.F.); (A.F.); (D.A.G.); (Y.S.)
| | - Lahouaria Hadri
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.G.K.); (C.B.-B.); (A.B.); (S.Z.); (S.G.); (E.K.); (S.F.); (A.F.); (D.A.G.); (Y.S.)
- Correspondence: (M.B.); (L.H.)
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12
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Brojakowska A, Eskandari A, Bisserier M, Bander J, Garikipati VNS, Hadri L, Goukassian DA, Fish KM. Comorbidities, sequelae, blood biomarkers and their associated clinical outcomes in the Mount Sinai Health System COVID-19 patients. PLoS One 2021; 16:e0253660. [PMID: 34228746 PMCID: PMC8260001 DOI: 10.1371/journal.pone.0253660] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 06/10/2021] [Indexed: 01/16/2023] Open
Abstract
With the continuing rise of SARS-CoV2 infection globally and the emergence of various waves in different countries, understanding characteristics of susceptibility to infection, clinical severity, and outcomes remain vital. In this retrospective study, data was extracted for 39,539 patients from the de-identified Mount Sinai Health System COVID-19 database. We assessed the risk of mortality based on the presence of comorbidities and organ-specific sequelae in 7,032 CoV2 positive (+) patients. Prevalence of cardiovascular and metabolic comorbidities was high among SARS-CoV2+ individuals. Diabetes, obesity, coronary artery disease, hypertension, atrial fibrillation, and heart failure all increased overall mortality risk, while asthma did not. Ethnicity modified the risk of mortality associated with these comorbidities. With regards to secondary complications in the setting of infection, individuals with acute kidney injury and acute myocardial injury showed an increase in mortality risk. Cerebral infarcts and acute venous thromboembolic events were not associated with increased risk of mortality. Biomarkers for cardiovascular injury, coagulation, and inflammation were compared between deceased and survived individuals. We found that cardiac and coagulation biomarkers were elevated and fell beyond normal range more often in deceased patients. Several, but not all, inflammatory markers evaluated were increased in deceased patients. In summary, we identified comorbidities and sequelae along with peripheral blood biomarkers that were associated with elevated clinical severity and poor outcomes in COVID-19 patients. Overall, these findings detail the granularity of previously reported factors which may impact susceptibility, clinical severity, and mortality during the course of COVID-19 disease.
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Affiliation(s)
- Agnieszka Brojakowska
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Abrisham Eskandari
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Malik Bisserier
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Jeffrey Bander
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | | | - Lahouaria Hadri
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - David A. Goukassian
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Kenneth M. Fish
- Cardiovascular Research Institute, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
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13
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Cheng Z, Naga Srikanth Garikipati V, Truongcao MM, Cimini M, Huang G, Wang C, Benedict C, Gonzalez C, Mallaredy V, Goukassian DA, Verma SK, Kishore R. Serum-Derived Small Extracellular Vesicles From Diabetic Mice Impair Angiogenic Property of Microvascular Endothelial Cells: Role of EZH2. J Am Heart Assoc 2021; 10:e019755. [PMID: 33988033 PMCID: PMC8200714 DOI: 10.1161/jaha.120.019755] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Impaired angiogenic abilities of the microvascular endothelial cell (MVEC) play a crucial role in diabetes mellitus–impaired ischemic tissue repair. However, the underlying mechanisms of diabetes mellitus–impaired MVEC function remain unclear. We studied the role of serum‐derived small extracellular vesicles (ssEVs) in diabetes mellitus–impaired MVEC function. Methods and Results ssEVs were isolated from 8‐week‐old male db/db and db/+ mice by ultracentrifugation and size/number were determined by the Nano‐sight tracking system. Diabetic ssEVs significantly impaired tube formation and migration abilities of human MVECs. Furthermore, local transplantation of diabetic ssEVs strikingly reduced blood perfusion and capillary/arteriole density in ischemic hind limb of wildtype C57BL/6J mice. Diabetic ssEVs decreased secretion/expression of several pro‐angiogenic factors in human MVECs. Mechanistically, expression of enhancer of zest homolog 2 (EZH2), the major methyltransferase responsible for catalyzing H3K27me3 (a transcription repressive maker), and H3K27me3 was increased in MVECs from db/db mice. Diabetic ssEVs increased EZH2 and H3K27me3 expression/activity in human MVECs. Expression of EZH2 mRNA was increased in diabetic ssEVs. EZH2‐specific inhibitor significantly reversed diabetic ssEVs‐enhanced expression of EZH2 and H3K27me3, impaired expression of angiogenic factors, and improved blood perfusion and vessel density in ischemic hind limb of C57BL/6J mice. Finally, EZH2 inactivation repressed diabetic ssEVs‐induced H3K27me3 expression at promoter of pro‐angiogenic genes. Conclusions Diabetic ssEVs impair the angiogenic property of MVECs via, at least partially, transferring EZH2 mRNA to MVECs, thus inducing the epigenetic mechanism involving EZH2‐enhanced expression of H3K27me3 and consequent silencing of pro‐angiogenic genes. Our findings unravel the cellular mechanism and expand the scope of bloodborne substances that impair MVEC function in diabetes mellitus.
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Affiliation(s)
- Zhongjian Cheng
- Center for Translational Medicine Lewis Katz School of Medicine Temple University Philadelphia PA
| | - Venkata Naga Srikanth Garikipati
- Department of Emergency Medicine Dorothy M. Davis Heart Lung and Research InstituteThe Ohio State University Wexner Medical Center Columbus OH
| | - May M Truongcao
- Center for Translational Medicine Lewis Katz School of Medicine Temple University Philadelphia PA
| | - Maria Cimini
- Center for Translational Medicine Lewis Katz School of Medicine Temple University Philadelphia PA
| | - Grace Huang
- Center for Translational Medicine Lewis Katz School of Medicine Temple University Philadelphia PA
| | - Chunlin Wang
- Center for Translational Medicine Lewis Katz School of Medicine Temple University Philadelphia PA
| | - Cindy Benedict
- Center for Translational Medicine Lewis Katz School of Medicine Temple University Philadelphia PA
| | - Carolina Gonzalez
- Center for Translational Medicine Lewis Katz School of Medicine Temple University Philadelphia PA
| | - Vandana Mallaredy
- Center for Translational Medicine Lewis Katz School of Medicine Temple University Philadelphia PA
| | - David A Goukassian
- Cardiovascular Research CenterIcahn School of Medicine at Mount Sinai New York NY
| | - Suresh K Verma
- Department of Medicine-Cardiovascular Disease The University of Alabama at Birmingham Birmingham AL
| | - Raj Kishore
- Center for Translational Medicine Lewis Katz School of Medicine Temple University Philadelphia PA.,Department of Pharmacology Lewis Katz School of Medicine Temple University Philadelphia PA
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14
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Hamouche W, Bisserier M, Brojakowska A, Eskandari A, Fish K, Goukassian DA, Hadri L. Pathophysiology and pharmacological management of pulmonary and cardiovascular features of COVID-19. J Mol Cell Cardiol 2020; 153:72-85. [PMID: 33373644 PMCID: PMC7833205 DOI: 10.1016/j.yjmcc.2020.12.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/25/2020] [Accepted: 12/13/2020] [Indexed: 02/06/2023]
Abstract
The first confirmed case of novel Coronavirus Disease 2019 (COVID-19) in the United States was reported on January 20, 2020. As of November 24, 2020, close to 12.2 million cases of COVID-19 was confirmed in the US, with over 255,958 deaths. The rapid transmission of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), its unusual and divergent presentation has strengthened the status of COVID-19 as a major public health threat. In this review, we aim to 1- discuss the epidemiological data from various COVID-19 patient cohorts around the world and the USA as well the associated risk factors; 2- summarize the pathophysiology of SARS-CoV-2 infection and the underlying molecular mechanisms for the respiratory and cardiovascular manifestations; 3- highlight the potential treatments and vaccines as well as current clinical trials for COVID-19.
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Affiliation(s)
- Walid Hamouche
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Internal Medicine Department, Brookdale University Hospital Medical Center, Brooklyn, NY, USA
| | - Malik Bisserier
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Agnieszka Brojakowska
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Abrisham Eskandari
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kenneth Fish
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - David A Goukassian
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Lahouaria Hadri
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
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15
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Cimini M, Garikipati VNS, de Lucia C, Cheng Z, Wang C, Truongcao MM, Lucchese AM, Roy R, Benedict C, Goukassian DA, Koch WJ, Kishore R. Podoplanin neutralization improves cardiac remodeling and function after acute myocardial infarction. JCI Insight 2019; 5:126967. [PMID: 31287805 DOI: 10.1172/jci.insight.126967] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Podoplanin, a small mucine-type transmembrane glycoprotein, has been recently shown to be expressed by lymphangiogenic, fibrogenic and mesenchymal progenitor cells in the acutely and chronically infarcted myocardium. Podoplanin binds to CLEC-2, a C-type lectin-like receptor 2 highly expressed by CD11bhigh cells following inflammatory stimuli. Why podoplanin expression appears only after organ injury is currently unknown. Here, we characterize the role of podoplanin in different stages of myocardial repair after infarction and propose a podoplanin-mediated mechanism in the resolution of post-MI inflammatory response and cardiac repair. Neutralization of podoplanin led to significant improvements in the left ventricular functions and scar composition in animals treated with podoplanin neutralizing antibody. The inhibition of the interaction between podoplanin and CLEC-2 expressing immune cells in the heart enhances the cardiac performance, regeneration and angiogenesis post MI. Our data indicates that modulating the interaction between podoplanin positive cells with the immune cells after myocardial infarction positively affects immune cell recruitment and may represent a novel therapeutic target to augment post-MI cardiac repair, regeneration and function.
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16
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Garikipati VN, Cimini M, Wang C, Roy R, Cheng Z, Truongcao MM, Benedict C, Verma SK, Koch WJ, Kishore R, Goukassian DA. Abstract 333: TNF Receptor Modulation of Progenitor Cells and Exosomes for Myocardial Repair. Circ Res 2018. [DOI: 10.1161/res.123.suppl_1.333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Our published studies, using TNFR1 and TNFR2 knockout (KO) mice have demonstrated that negative effects of TNF during ischemic tissue repair including enhanced apoptosis and inflammatory cytokines expression and signaling, is largely mediated by TNFR1/p55. Our hypothesis is that inhibition of TNF-TNFR1 signaling inhibits multiple negative effects of TNF after myocardial ischemia by promoting TNF signaling through protective TNFR2 receptor and thereby augmenting EPC-mediated myocardial angiogenesis and repair and this enhanced protective effect of TNFR1 KO EPCs may involve alteration in the cargo and function of TNFR1-KO EPC derived exosomes.
Protective effect of disrupted TNF-TNFR1/p55 signaling in BM-EPCs under stress conditions in WT, p55KO and p75KO EPCs were tested in tube formation assay under hypoxia conditions and H2O2 treatment. In the absence of TNFR1 (p55KO EPCs) - EC function of BM-EPCs is enhanced under normoxia/hypoxia conditions and survival of BM-EPCs is increased under oxidative stress. To test the effect of TNFR1 and TNFR2 loss in the BM-EPCs for recovery after AMI, WT mice were subjected to AMI and WT, p75KO and p55KO BM-EPCs were injected into the myocardium immediately after AMI. Compared to WT and p75KO, injection of p55KO EPCs into WT hosts led to - increased retention of p55KO EPCs in the WT mice hearts; decreased post-MI apoptosis in WT mice; increased vascular network; significantly improved cardiac function; substantially small infarct size; the last three indicating improved cardiac remodeling by day 21 post-AMI. Further, in vitro exosome studies showed that compared to WT and p75KOs, p55KO BM-EPCs-derived exosomes showed positive activities in vitro, including - enhanced angiogenic function in HUVECs and increased survival of H9C2 cells. These effects were mediated via upregulation of miRNA-191-5p as shown by increased levels of angiogenic miR-191-5p in the exosomal cargo of p55KO EPCs and near complete inhibition of HUVEC angiogenic function in vitro by miR-191-5p-antagomiR.
Our findings suggest that decrease/loss of TNFR1 modulates both the content and function of EPC exosomes and enhance reparative and angiogenic capabilities of EPCs and EPC-mediated vascular and anatomical repair in the MI model.
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Affiliation(s)
| | | | | | - Rajika Roy
- Temple Univ Sch of Medicine, Philadelphia, PA
| | | | | | | | | | | | - Raj Kishore
- Temple Univ Sch of Medicine, Philadelphia, PA
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17
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Garikipati VN, Verma SK, Jolardarashi D, Cheng Z, Ibetti J, Cimini M, Tang Y, Khan M, Yue Y, Benedict C, Nickoloff E, Truongcao MM, Gao E, Krishnamurthy P, Goukassian DA, Koch WJ, Kishore R. Therapeutic inhibition of miR-375 attenuates post-myocardial infarction inflammatory response and left ventricular dysfunction via PDK-1-AKT signalling axis. Cardiovasc Res 2017; 113:938-949. [PMID: 28371849 PMCID: PMC11008084 DOI: 10.1093/cvr/cvx052] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 01/13/2017] [Accepted: 03/16/2017] [Indexed: 11/14/2022] Open
Abstract
AIMS Increased miR-375 levels has been implicated in rodent models of myocardial infarction (MI) and with patients with heart failure. However, no prior study had established a therapeutic role of miR-375 in ischemic myocardium. Therefore, we assessed whether inhibition of MI-induced miR-375 by LNA anti-miR-375 can improve recovery after acute MI. METHODS AND RESULTS Ten weeks old mice were treated with either control or LNA anti miR-375 after induction of MI by LAD ligation. The inflammatory response, cardiomyocyte apoptosis, capillary density and left ventricular (LV) functional, and structural remodelling changes were evaluated. Anti-miR-375 therapy significantly decreased inflammatory response and reduced cardiomyocyte apoptosis in the ischemic myocardium and significantly improved LV function and neovascularization and reduced infarct size. Repression of miR-375 led to the activation of 3-phosphoinositide-dependent protein kinase 1 (PDK-1) and increased AKT phosphorylation on Thr-308 in experimental hearts. In corroboration with our in vivo findings, our in vitro studies demonstrated that knockdown of miR-375 in macrophages modulated their phenotype, enhanced PDK-1 levels, and reduced pro-inflammatory cytokines expression following LPS challenge. Further, miR-375 levels were elevated in failing human heart tissue. CONCLUSION Taken together, our studies demonstrate that anti-miR-375 therapy reduced inflammatory response, decreased cardiomyocyte death, improved LV function, and enhanced angiogenesis by targeting multiple cell types mediated at least in part through PDK-1/AKT signalling mechanisms.
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Affiliation(s)
- Venkata N.S. Garikipati
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Suresh K. Verma
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Darukeshwara Jolardarashi
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1675 University Blvd., Volker Hall G094, Birmingham, AL 35294, USA
| | - Zhongjian Cheng
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Jessica Ibetti
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Maria Cimini
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Yan Tang
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Mohsin Khan
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Yujia Yue
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Cindy Benedict
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Emily Nickoloff
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - May M. Truongcao
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Erhe Gao
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Prasanna Krishnamurthy
- Department of Biomedical Engineering, University of Alabama at Birmingham, 1675 University Blvd., Volker Hall G094, Birmingham, AL 35294, USA
| | - David A. Goukassian
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Walter J. Koch
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
- Department of Pharmacology, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
| | - Raj Kishore
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
- Department of Pharmacology, Lewis Katz School of Medicine, Temple University, MERB-953, 3500 N Broad Street, Philadelphia, PA 19140, USA
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Verma SK, Garikipati VNS, Krishnamurthy P, Schumacher SM, Grisanti LA, Cimini M, Cheng Z, Khan M, Yue Y, Benedict C, Truongcao MM, Rabinowitz JE, Goukassian DA, Tilley D, Koch WJ, Kishore R. Interleukin-10 Inhibits Bone Marrow Fibroblast Progenitor Cell-Mediated Cardiac Fibrosis in Pressure-Overloaded Myocardium. Circulation 2017; 136:940-953. [PMID: 28667100 DOI: 10.1161/circulationaha.117.027889] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 06/15/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND Activated fibroblasts (myofibroblasts) play a critical role in cardiac fibrosis; however, their origin in the diseased heart remains unclear, warranting further investigation. Recent studies suggest the contribution of bone marrow fibroblast progenitor cells (BM-FPCs) in pressure overload-induced cardiac fibrosis. We have previously shown that interleukin-10 (IL10) suppresses pressure overload-induced cardiac fibrosis; however, the role of IL10 in inhibition of BM-FPC-mediated cardiac fibrosis is not known. We hypothesized that IL10 inhibits pressure overload-induced homing of BM-FPCs to the heart and their transdifferentiation to myofibroblasts and thus attenuates cardiac fibrosis. METHODS Pressure overload was induced in wild-type (WT) and IL10 knockout (IL10KO) mice by transverse aortic constriction. To determine the bone marrow origin, chimeric mice were created with enhanced green fluorescent protein WT mice marrow to the IL10KO mice. For mechanistic studies, FPCs were isolated from mouse bone marrow. RESULTS Pressure overload enhanced BM-FPC mobilization and homing in IL10KO mice compared with WT mice. Furthermore, WT bone marrow (from enhanced green fluorescent protein mice) transplantation in bone marrow-depleted IL10KO mice (IL10KO chimeric mice) reduced transverse aortic constriction-induced BM-FPC mobilization compared with IL10KO mice. Green fluorescent protein costaining with α-smooth muscle actin or collagen 1α in left ventricular tissue sections of IL10KO chimeric mice suggests that myofibroblasts were derived from bone marrow after transverse aortic constriction. Finally, WT bone marrow transplantation in IL10KO mice inhibited transverse aortic constriction-induced cardiac fibrosis and improved heart function. At the molecular level, IL10 treatment significantly inhibited transforming growth factor-β-induced transdifferentiation and fibrotic signaling in WT BM-FPCs in vitro. Furthermore, fibrosis-associated microRNA (miRNA) expression was highly upregulated in IL10KO-FPCs compared with WT-FPCs. Polymerase chain reaction-based selective miRNA analysis revealed that transforming growth factor-β-induced enhanced expression of fibrosis-associated miRNAs (miRNA-21, -145, and -208) was significantly inhibited by IL10. Restoration of miRNA-21 levels suppressed the IL10 effects on transforming growth factor-β-induced fibrotic signaling in BM-FPCs. CONCLUSIONS Our findings suggest that IL10 inhibits BM-FPC homing and transdifferentiation to myofibroblasts in pressure-overloaded myocardium. Mechanistically, we show for the first time that IL10 suppresses Smad-miRNA-21-mediated activation of BM-FPCs and thus modulates cardiac fibrosis.
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Affiliation(s)
- Suresh K Verma
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Venkata N S Garikipati
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Prasanna Krishnamurthy
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Sarah M Schumacher
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Laurel A Grisanti
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Maria Cimini
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Zhongjian Cheng
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Mohsin Khan
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Yujia Yue
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Cindy Benedict
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - May M Truongcao
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Joseph E Rabinowitz
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - David A Goukassian
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Douglas Tilley
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Walter J Koch
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.)
| | - Raj Kishore
- From Center for Translational Medicine (S.K.V., V.N.S.G., S.M.S., L.A.G., M.C., Z.C., M.K., Y.Y., C.B., M.M.T., J.E.R., D.A.G., D.T., W.J.K., R.K.) and Department of Pharmacology (D.T., W.J.K., R.K.), Lewis Katz School of Medicine, Temple University, Philadelphia, PA; and Department of Biomedical Engineering, School of Medicine, University of Alabama at Birmingham (P.K.).
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Yue Y, Garikipati VNS, Verma SK, Goukassian DA, Kishore R. Interleukin-10 Deficiency Impairs Reparative Properties of Bone Marrow-Derived Endothelial Progenitor Cell Exosomes. Tissue Eng Part A 2017; 23:1241-1250. [PMID: 28471299 DOI: 10.1089/ten.tea.2017.0084] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Endothelial progenitor cell (EPC)-based therapy has immense potential to promote cardiac neovascularization and attenuate ischemic injury. Functional benefits of EPCs and other adult stem cell therapies largely involve paracrine mechanisms and exosomes secreted by stem cells are emerging as pivotal paracrine entity of stem/progenitor cells. However, modest outcomes after EPC-/stem cell-based clinical trials suggest that stem cell/exosome function might be modulated by stimuli they encounter in ischemic tissues, including systemic inflammation. We hypothesized that EPCs under inflammatory stress might produce exosomes of altered and dysfunctional content, which may compromise EPC repair in ischemic heart disease. We have previously shown that EPCs obtained from interleukin-10 knockout (IL-10KO) mice (model mimicking systemic inflammation) display impaired angiogenic functions. Whether IL-10KO-EPC-derived exosomes inherit their parental dysfunctional phenotype and whether inflammatory environment alters the cargo of their secreted exosomes are not known. After cell expansion from IL-10KO and wild-type (WT) mice, we isolated exosomes and compared their functions in terms of effect on cell survival, proliferation, migration, and angiogenic capacity in vitro. WT-EPC-Exo treatment enhanced endothelial cell proliferation and tube formation, and inhibited apoptosis, whereas IL-10KO-Exo exhibited impaired or even detrimental effects, suggesting that the reparative capacity of WT-EPC-Exo is lost in exosomes derived from IL-10-KO-EPCs. Deep RNA sequencing and proteomic analyses to compare WT and IL-10KO-Exo revealed drastically altered exosome cargo. Importantly, IL-10KO-EPC-Exo were highly enriched in microRNAs and proteins that promote inflammation and apoptosis and inhibit angiogenesis. Through modulation of a specific enriched miRNA (miR-375), we partially rescued IL-10KO-EPC-Exo dysfunction. Thus, our study revealed that EPC exosomes display impaired function under inflammatory stimulus through changed exosome contents, and the dysfunction can be rescued by modulation of a specific target packed in exosomes.
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Affiliation(s)
- Yujia Yue
- 1 Center for Translational Medicine, Lewis Katz School of Medicine, Temple University , Philadelphia, Pennsylvania
| | | | - Suresh Kumar Verma
- 1 Center for Translational Medicine, Lewis Katz School of Medicine, Temple University , Philadelphia, Pennsylvania
| | - David A Goukassian
- 1 Center for Translational Medicine, Lewis Katz School of Medicine, Temple University , Philadelphia, Pennsylvania
| | - Raj Kishore
- 1 Center for Translational Medicine, Lewis Katz School of Medicine, Temple University , Philadelphia, Pennsylvania.,2 Department of Pharmacology, Lewis Katz School of Medicine, Temple University , Philadelphia, Pennsylvania
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Sasi SP, Yan X, Zuriaga-Herrero M, Gee H, Lee J, Mehrzad R, Song J, Onufrak J, Morgan J, Enderling H, Walsh K, Kishore R, Goukassian DA. Different Sequences of Fractionated Low-Dose Proton and Single Iron-Radiation-Induced Divergent Biological Responses in the Heart. Radiat Res 2017; 188:191-203. [PMID: 28613990 DOI: 10.1667/rr14667.1] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Deep-space travel presents risks of exposure to ionizing radiation composed of a spectrum of low-fluence protons (1H) and high-charge and energy (HZE) iron nuclei (e.g., 56Fe). When exposed to galactic cosmic rays, each cell in the body may be traversed by 1H every 3-4 days and HZE nuclei every 3-4 months. The effects of low-dose sequential fractionated 1H or HZE on the heart are unknown. In this animal model of simulated ionizing radiation, middle-aged (8-9 months old) male C57BL/6NT mice were exposed to radiation as follows: group 1, nonirradiated controls; group 2, three fractionated doses of 17 cGy 1H every other day (1H × 3); group 3, three fractionated doses of 17 cGy 1H every other day followed by a single low dose of 15 cGy 56Fe two days after the final 1H dose (1H × 3 + 56Fe); and group 4, a single low dose of 15 cGy 56Fe followed (after 2 days) by three fractionated doses of 17 cGy 1H every other day (56Fe + 1H × 3). A subgroup of mice from each group underwent myocardial infarction (MI) surgery at 28 days postirradiation. Cardiac structure and function were assessed in all animals at days 7, 14 and 28 after MI surgery was performed. Compared to the control animals, the treatments that groups 2 and 3 received did not induce negative effects on cardiac function or structure. However, compared to all other groups, the animals in group 4, showed depressed left ventricular (LV) functions at 1 month with concomitant enhancement in cardiac fibrosis and induction of cardiac hypertrophy signaling at 3 months. In the irradiated and MI surgery groups compared to the control group, the treatments received by groups 2 and 4 did not induce negative effects at 1 month postirradiation and MI surgery. However, in group 3 after MI surgery, there was a 24% increase in mortality, significant decreases in LV function and a 35% increase in post-infarction size. These changes were associated with significant decreases in the angiogenic and cell survival signaling pathways. These data suggest that fractionated doses of radiation induces cellular and molecular changes that result in depressed heart functions both under basal conditions and particularly after myocardial infarction.
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Affiliation(s)
- Sharath P Sasi
- a Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts
| | - Xinhua Yan
- a Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts.,b Tufts University School of Medicine, Boston, Massachusetts
| | - Marian Zuriaga-Herrero
- f Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts
| | - Hannah Gee
- a Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts
| | - Juyong Lee
- c Calhoun Cardiology Center, University of Connecticut Health Center, Farmington, Connecticut
| | - Raman Mehrzad
- d Steward Carney Hospital, Dorchester, Massachusetts
| | - Jin Song
- a Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts
| | - Jillian Onufrak
- a Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts
| | - James Morgan
- b Tufts University School of Medicine, Boston, Massachusetts.,d Steward Carney Hospital, Dorchester, Massachusetts
| | - Heiko Enderling
- e Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida
| | - Kenneth Walsh
- f Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts
| | - Raj Kishore
- 7 Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - David A Goukassian
- a Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts.,f Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts.,7 Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania
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He S, Zhao T, Guo H, Meng Y, Qin G, Goukassian DA, Han J, Gao X, Zhu Y. Coordinated Activation of VEGF/VEGFR-2 and PPARδ Pathways by a Multi-Component Chinese Medicine DHI Accelerated Recovery from Peripheral Arterial Disease in Type 2 Diabetic Mice. PLoS One 2016; 11:e0167305. [PMID: 27930695 PMCID: PMC5145164 DOI: 10.1371/journal.pone.0167305] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 11/12/2016] [Indexed: 12/26/2022] Open
Abstract
Diabetic mellitus (DM) patients are at an increased risk of developing peripheral arterial disease (PAD). Danhong injection (DHI) is a Chinese patent medicine widely used for several cardiovascular indications but the mechanism of action is not well-understood. We investigated the therapeutic potential of DHI on experimental PAD in mice with chemically induced as well as genetic (KKAy) type 2 DM and the overlapping signaling pathways regulating both therapeutic angiogenesis and glucose homeostasis. Compared with normal genetic background wild type (WT) mice, both DM mice showed impaired perfusion recovery in hind-limb ischemia (HLI) model. DHI treatment significantly accelerated perfusion recovery, lowered blood glucose and improved glucose tolerance in both DM models. Bioluminescent imaging demonstrated a continuous ischemia-induced vascular endothelial growth factor receptor 2 (VEGFR-2) gene expressions with a peak time coincident with the maximal DHI stimulation. Flow cytometry analysis showed a DHI-mediated increase in endothelial progenitor cell (EPC) mobilization from bone marrow to circulating peripheral blood. DHI administration upregulated the expression of vascular endothelial growth factor A (VEGF-A) and VEGF receptor-2 (VEGFR-2) in ischemic muscle. A cross talk between ischemia-induced angiogenesis and glucose tolerance pathways was analyzed by Ingenuity Pathway Analysis (IPA) which suggested an interaction of VEGF-A/VEGFR-2 and peroxisome proliferator-activated receptor δ (PPARδ)/peroxisome proliferator-activated receptor γ (PPARγ) genes. We confirmed that upregulation of VEGF-A/VEGFR-2 by DHI promoted PPARδ gene expression in both type 2 diabetic mice. Our findings demonstrated that a multi-component Chinese medicine DHI effectively increased blood flow recovery after tissue ischemia in diabetic mice by promoting angiogenesis and improving glucose tolerance through a concomitant activation of VEGF-A/VEGFR-2 and PPARδ signaling pathways.
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Affiliation(s)
- Shuang He
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of TCM, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Tiechan Zhao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of TCM, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Hao Guo
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of TCM, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Yanzhi Meng
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of TCM, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Gangjian Qin
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Department of Medicine-Cardiology and Department of Molecular Pharmacology and Biological Chemistry, Northwestern University Feinberg School of Medicine, Chicago, United States of America
| | - David A. Goukassian
- Center of Biomedical Research, Tufts University School of Medicine, Boston, United States of America
| | - Jihong Han
- State Key Laboratory of Medicinal Chemical Biology, and Collaborative Innovation Center for Biotherapy, Nankai University, Tianjin, China
| | - Xuimei Gao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yan Zhu
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of TCM, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
- Molecular Cardiology Research Institute, Tufts Medical Center and Tufts University School of Medicine, Boston, United States of America
- * E-mail:
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Sasi SP, Song J, Park D, Enderling H, McDonald JT, Gee H, Garrity B, Shtifman A, Yan X, Walsh K, Natarajan M, Kishore R, Goukassian DA. TNF-TNFR2/p75 signaling inhibits early and increases delayed nontargeted effects in bone marrow-derived endothelial progenitor cells. J Biol Chem 2016; 290:27014. [PMID: 26546693 DOI: 10.1074/jbc.a114.567743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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Muralidharan S, Sasi SP, Zuriaga MA, Hirschi KK, Porada CD, Coleman MA, Walsh KX, Yan X, Goukassian DA. Corrigendum: Ionizing Particle Radiation as a Modulator of Endogenous Bone Marrow Cell Reprogramming: Implications for Hematological Cancers. Front Oncol 2015; 5:255. [PMID: 26636037 PMCID: PMC4658418 DOI: 10.3389/fonc.2015.00255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 11/05/2015] [Indexed: 11/13/2022] Open
Abstract
[This corrects the article on p. 231 in vol. 5, PMID: 26528440.].
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Affiliation(s)
- Sujatha Muralidharan
- Whitaker Cardiovascular Institute, Boston University School of Medicine , Boston, MA , USA
| | - Sharath P Sasi
- Cardiovascular Research Center, GeneSys Research Institute , Boston, MA , USA
| | - Maria A Zuriaga
- Whitaker Cardiovascular Institute, Boston University School of Medicine , Boston, MA , USA
| | - Karen K Hirschi
- Yale Cardiovascular Research Center, Yale School of Medicine , New Haven, CT , USA
| | - Christopher D Porada
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine , Winston-Salem, NC , USA
| | - Matthew A Coleman
- Radiation Oncology, School of Medicine, University of California Davis , Sacramento, CA , USA ; Lawrence Livermore National Laboratory , Livermore, CA , USA
| | - Kenneth X Walsh
- Whitaker Cardiovascular Institute, Boston University School of Medicine , Boston, MA , USA
| | - Xinhua Yan
- Cardiovascular Research Center, GeneSys Research Institute , Boston, MA , USA ; Tufts University School of Medicine , Boston, MA , USA
| | - David A Goukassian
- Whitaker Cardiovascular Institute, Boston University School of Medicine , Boston, MA , USA ; Cardiovascular Research Center, GeneSys Research Institute , Boston, MA , USA ; Tufts University School of Medicine , Boston, MA , USA
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Yan X, Sasi SP, Gee H, Lee J, Yang Y, Mehrzad R, Onufrak J, Song J, Enderling H, Agarwal A, Rahimi L, Morgan J, Wilson PF, Carrozza J, Walsh K, Kishore R, Goukassian DA. Correction: Cardiovascular Risks Associated with Low Dose Ionizing Particle Radiation. PLoS One 2015; 10:e0142764. [PMID: 26544605 PMCID: PMC4636225 DOI: 10.1371/journal.pone.0142764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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25
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Muralidharan S, Sasi SP, Zuriaga MA, Hirschi KK, Porada CD, Coleman MA, Walsh KX, Yan X, Goukassian DA. Ionizing Particle Radiation as a Modulator of Endogenous Bone Marrow Cell Reprogramming: Implications for Hematological Cancers. Front Oncol 2015; 5:231. [PMID: 26528440 PMCID: PMC4604322 DOI: 10.3389/fonc.2015.00231] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 10/01/2015] [Indexed: 12/15/2022] Open
Abstract
Exposure of individuals to ionizing radiation (IR), as in the case of astronauts exploring space or radiotherapy cancer patients, increases their risk of developing secondary cancers and other health-related problems. Bone marrow (BM), the site in the body where hematopoietic stem cell (HSC) self-renewal and differentiation to mature blood cells occurs, is extremely sensitive to low-dose IR, including irradiation by high-charge and high-energy particles. Low-dose IR induces DNA damage and persistent oxidative stress in the BM hematopoietic cells. Inefficient DNA repair processes in HSC and early hematopoietic progenitors can lead to an accumulation of mutations whereas long-lasting oxidative stress can impair hematopoiesis itself, thereby causing long-term damage to hematopoietic cells in the BM niche. We report here that low-dose 1H- and 56Fe-IR significantly decreased the hematopoietic early and late multipotent progenitor (E- and L-MPP, respectively) cell numbers in mouse BM over a period of up to 10 months after exposure. Both 1H- and 56Fe-IR increased the expression of pluripotent stem cell markers Sox2, Nanog, and Oct4 in L-MPPs and 10 months post-IR exposure. We postulate that low doses of 1H- and 56Fe-IR may induce endogenous cellular reprogramming of BM hematopoietic progenitor cells to assume a more primitive pluripotent phenotype and that IR-induced oxidative DNA damage may lead to mutations in these BM progenitors. This could then be propagated to successive cell lineages. Persistent impairment of BM progenitor cell populations can disrupt hematopoietic homeostasis and lead to hematologic disorders, and these findings warrant further mechanistic studies into the effects of low-dose IR on the functional capacity of BM-derived hematopoietic cells including their self-renewal and pluripotency.
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Affiliation(s)
- Sujatha Muralidharan
- Whitaker Cardiovascular Institute, Boston University School of Medicine , Boston, MA , USA
| | - Sharath P Sasi
- Cardiovascular Research Center, GeneSys Research Institute , Boston, MA , USA
| | - Maria A Zuriaga
- Whitaker Cardiovascular Institute, Boston University School of Medicine , Boston, MA , USA
| | - Karen K Hirschi
- Yale Cardiovascular Research Center, Yale School of Medicine , New Haven, CT , USA
| | - Christopher D Porada
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine , Winston-Salem, NC , USA
| | - Matthew A Coleman
- Radiation Oncology, School of Medicine, University of California Davis , Sacramento, CA , USA ; Lawrence Livermore National Laboratory , Livermore, CA , USA
| | - Kenneth X Walsh
- Whitaker Cardiovascular Institute, Boston University School of Medicine , Boston, MA , USA
| | - Xinhua Yan
- Cardiovascular Research Center, GeneSys Research Institute , Boston, MA , USA ; Tufts University School of Medicine , Boston, MA , USA
| | - David A Goukassian
- Whitaker Cardiovascular Institute, Boston University School of Medicine , Boston, MA , USA ; Cardiovascular Research Center, GeneSys Research Institute , Boston, MA , USA ; Tufts University School of Medicine , Boston, MA , USA
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Coleman MA, Sasi SP, Onufrak J, Natarajan M, Manickam K, Schwab J, Muralidharan S, Peterson LE, Alekseyev YO, Yan X, Goukassian DA. Low-dose radiation affects cardiac physiology: gene networks and molecular signaling in cardiomyocytes. Am J Physiol Heart Circ Physiol 2015; 309:H1947-63. [PMID: 26408534 DOI: 10.1152/ajpheart.00050.2015] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 09/03/2015] [Indexed: 01/22/2023]
Abstract
There are 160,000 cancer patients worldwide treated with particle radiotherapy (RT). With the advent of proton, and high (H) charge (Z) and energy (E) HZE ionizing particle RT, the cardiovascular diseases risk estimates are uncertain. In addition, future deep space exploratory-type missions will expose humans to unknown but low doses of particle irradiation (IR). We examined molecular responses using transcriptome profiling in left ventricular murine cardiomyocytes isolated from mice that were exposed to 90 cGy, 1 GeV proton ((1)H) and 15 cGy, 1 GeV/nucleon iron ((56)Fe) over 28 days after exposure. Unsupervised clustering analysis of gene expression segregated samples according to the IR response and time after exposure, with (56)Fe-IR showing the greatest level of gene modulation. (1)H-IR showed little differential transcript modulation. Network analysis categorized the major differentially expressed genes into cell cycle, oxidative responses, and transcriptional regulation functional groups. Transcriptional networks identified key nodes regulating expression. Validation of the signal transduction network by protein analysis and gel shift assay showed that particle IR clearly regulates a long-lived signaling mechanism for ERK1/2, p38 MAPK signaling and identified NFATc4, GATA4, STAT3, and NF-κB as regulators of the response at specific time points. These data suggest that the molecular responses and gene expression to (56)Fe-IR in cardiomyocytes are unique and long-lasting. Our study may have significant implications for the efforts of National Aeronautics and Space Administration to develop heart disease risk estimates for astronauts and for patients receiving conventional and particle RT via identification of specific HZE-IR molecular markers.
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Affiliation(s)
- Matthew A Coleman
- University of California, Davis School of Medicine, Radiation Oncology, Sacramento, California; Lawrence Livermore National Laboratory, Livermore, California
| | - Sharath P Sasi
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts
| | - Jillian Onufrak
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts
| | - Mohan Natarajan
- University of Texas Health Science Center, San Antonio, Texas
| | | | - John Schwab
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts
| | - Sujatha Muralidharan
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts
| | - Leif E Peterson
- Center for Biostatistics, Houston Methodist Research Institute, Houston, Texas
| | - Yuriy O Alekseyev
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts; and
| | - Xinhua Yan
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts; Tufts University School of Medicine, Boston, Massachusetts
| | - David A Goukassian
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts; Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts; and Tufts University School of Medicine, Boston, Massachusetts
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27
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Zhou J, Cheng M, Boriboun C, Ardehali MM, Jiang C, Liu Q, Han S, Goukassian DA, Tang YL, Zhao TC, Zhao M, Cai L, Richard S, Kishore R, Qin G. Inhibition of Sam68 triggers adipose tissue browning. J Endocrinol 2015; 225:181-9. [PMID: 25934704 PMCID: PMC4482239 DOI: 10.1530/joe-14-0727] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/22/2015] [Indexed: 12/12/2022]
Abstract
Obesity is associated with insulin resistance and type 2 diabetes; molecular mechanisms that promote energy expenditure can be utilized for effective therapy. Src-associated in mitosis of 68 kDa (Sam68) is potentially significant, because knockout (KO) of Sam68 leads to markedly reduced adiposity. In the present study, we sought to determine the mechanism by which Sam68 regulates adiposity and energy homeostasis. We first found that Sam68 KO mice have a significantly reduced body weight as compared to controls, and the difference is explained entirely by decreased adiposity. Interestingly, these effects were not mediated by a difference in food intake; rather, they were associated with enhanced physical activity. When they were fed a high-fat diet, Sam68 KO mice gained much less body weight and fat mass than their WT littermates did, and they displayed an improved glucose and insulin tolerance. In Sam68 KO mice, the brown adipose tissue (BAT), inguinal, and epididymal depots were smaller, and their adipocytes were less hypertrophied as compared to their WT littermates. The BAT of Sam68 KO mice exhibited reduced lipid stores and expressed higher levels of Ucp1 and key thermogenic and fatty acid oxidation genes. Similarly, depots of inguinal and epididymal white adipose tissue (WAT) in Sam68 KO mice appeared browner, their multilocular Ucp1-positive cells were much more abundant, and the expression of Ucp1, Cidea, Prdm16, and Ppargc1a genes was greater as compared to WT controls, which suggests that the loss of Sam68 also promotes WAT browning. Furthermore, in all of the fat depots of the Sam68 KO mice, the expression of M2 macrophage markers was up-regulated, and that of M1 markers was down-regulated. Thus, Sam68 plays a crucial role in controlling thermogenesis and may be targeted to combat obesity and associated disorders.
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MESH Headings
- Adaptor Proteins, Signal Transducing/genetics
- Adaptor Proteins, Signal Transducing/metabolism
- Adipogenesis
- Adipose Tissue, Brown/cytology
- Adipose Tissue, Brown/immunology
- Adipose Tissue, Brown/metabolism
- Adipose Tissue, Brown/pathology
- Adipose Tissue, White/cytology
- Adipose Tissue, White/immunology
- Adipose Tissue, White/metabolism
- Adipose Tissue, White/pathology
- Adiposity
- Animals
- Behavior, Animal
- Cell Size
- Disease Resistance
- Energy Intake
- Energy Metabolism
- Gene Expression Regulation
- Heterozygote
- Insulin Resistance
- Ion Channels/biosynthesis
- Macrophages/immunology
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Mitochondrial Proteins/biosynthesis
- Motor Activity
- Obesity/immunology
- Obesity/metabolism
- Obesity/pathology
- RNA-Binding Proteins/genetics
- RNA-Binding Proteins/metabolism
- Thermogenesis
- Uncoupling Protein 1
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Affiliation(s)
- Junlan Zhou
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Min Cheng
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Chan Boriboun
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Mariam M Ardehali
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Changfei Jiang
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Qinghua Liu
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Shuling Han
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - David A Goukassian
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Yao-Liang Tang
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Ting C Zhao
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Ming Zhao
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Lu Cai
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Stéphane Richard
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Raj Kishore
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | - Gangjian Qin
- Department of Medicine-Cardiology Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, 303 E Chicago Avenue, Tarry 14-721, Chicago, Illinois 60611, USA Department of Cardiology Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan, Hubei, China Department of Biochemistry University of Ottawa, Ottawa, Ontario, Canada Institute for Medical Biology and Hubei Provincial Key Laboratory for Protection and Application of Special Plants in Wuling Area of China College of Life Sciences, South-Central University for Nationalities, Wuhan, Hubei, China GeneSys Research Institute CardioVascular Research Center, Tufts University School of Medicine, Boston, Massachusetts, USA Department of Medicine Medical College of Georgia, Vascular Biology Center, Georgia Regents University, Augusta, Georgia, USA Department of Surgery Roger Williams Medical Center, Boston University Medical School, Providence, Rhode Island, USA Kosair Children Hospital Research Institute Departments of Pediatrics, Radiation Oncology, Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky, USA Lady Davis Institute for Medical Research McGill University, Montreal, Quebec, Canada Center for Translational Medicine Temple University School of Medicine, Philadelphia, Pennsylvania, USA
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28
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Sasi SP, Rahimi L, Yan X, Silver M, Qin G, Losordo DW, Kishore R, Goukassian DA. Genetic deletion of TNFR2 augments inflammatory response and blunts satellite-cell-mediated recovery response in a hind limb ischemia model. FASEB J 2014; 29:1208-19. [PMID: 25466901 DOI: 10.1096/fj.14-249813] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 11/12/2014] [Indexed: 01/09/2023]
Abstract
We have previously shown that TNF-tumor necrosis factor receptor-2/p75 (TNFR2/p75) signaling plays a critical role in ischemia-induced neovascularization in skeletal muscle and heart tissues. To determine the role of TNF-TNFR2/p75 signaling in ischemia-induced inflammation and muscle regeneration, we subjected wild-type (WT) and TNFR2/p75 knockout (p75KO) mice to hind limb ischemia (HLI) surgery. Ischemia induced significant and long-lasting inflammation associated with considerable decrease in satellite-cell activation in p75KO muscle tissue up to 10 d after HLI surgery. To determine the possible additive negative roles of tissue aging and the absence of TNFR2/p75, either in the tissue or in the bone marrow (BM), we generated 2 chimeric BM transplantation (BMT) models where both young green fluorescent protein (GFP)-positive p75KO and WT BM-derived cells were transplanted into adult p75KO mice. HLI surgery was performed 1 mo after BMT, after confirming complete engraftment of the recipient BM with GFP donor cells. In adult p75KO with the WT-BMT, proliferative (Ki67(+)) cells were detected only by d 28 and were exclusively GFP(+), suggesting significantly delayed contribution of young WT-BM cell to adult p75KO ischemic tissue recovery. No GFP(+) young p75KO BM cells survived in adult p75KO tissue, signifying the additive negative roles of tissue aging combined with decreased/absent TNFR2/p75 signaling in postischemic recovery.
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Affiliation(s)
- Sharath P Sasi
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, USA
| | - Layla Rahimi
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, USA
| | - Xinhua Yan
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, USA; Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Marcy Silver
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, USA
| | - Gangjian Qin
- Feinberg Cardiovascular Institute, Feinberg School of Medicine Northwestern University, Chicago, Illinois, USA; and
| | - Douglas W Losordo
- Feinberg Cardiovascular Institute, Feinberg School of Medicine Northwestern University, Chicago, Illinois, USA; and
| | - Raj Kishore
- Center for Translational Medicine, Temple University School of Medicine, Temple University, Philadelphia, Pennsylvania, USA
| | - David A Goukassian
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, USA; Tufts University School of Medicine, Boston, Massachusetts, USA;
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Yan X, Sasi SP, Gee H, Lee J, Yang Y, Mehrzad R, Onufrak J, Song J, Enderling H, Agarwal A, Rahimi L, Morgan J, Wilson PF, Carrozza J, Walsh K, Kishore R, Goukassian DA. Cardiovascular risks associated with low dose ionizing particle radiation. PLoS One 2014; 9:e110269. [PMID: 25337914 PMCID: PMC4206415 DOI: 10.1371/journal.pone.0110269] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Accepted: 09/04/2014] [Indexed: 12/30/2022] Open
Abstract
Previous epidemiologic data demonstrate that cardiovascular (CV) morbidity and mortality may occur decades after ionizing radiation exposure. With increased use of proton and carbon ion radiotherapy and concerns about space radiation exposures to astronauts on future long-duration exploration-type missions, the long-term effects and risks of low-dose charged particle irradiation on the CV system must be better appreciated. Here we report on the long-term effects of whole-body proton (1H; 0.5 Gy, 1 GeV) and iron ion (56Fe; 0.15 Gy, 1GeV/nucleon) irradiation with and without an acute myocardial ischemia (AMI) event in mice. We show that cardiac function of proton-irradiated mice initially improves at 1 month but declines by 10 months post-irradiation. In AMI-induced mice, prior proton irradiation improved cardiac function restoration and enhanced cardiac remodeling. This was associated with increased pro-survival gene expression in cardiac tissues. In contrast, cardiac function was significantly declined in 56Fe ion-irradiated mice at 1 and 3 months but recovered at 10 months. In addition, 56Fe ion-irradiation led to poorer cardiac function and more adverse remodeling in AMI-induced mice, and was associated with decreased angiogenesis and pro-survival factors in cardiac tissues at any time point examined up to 10 months. This is the first study reporting CV effects following low dose proton and iron ion irradiation during normal aging and post-AMI. Understanding the biological effects of charged particle radiation qualities on the CV system is necessary both for the mitigation of space exploration CV risks and for understanding of long-term CV effects following charged particle radiotherapy.
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Affiliation(s)
- Xinhua Yan
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
- Tufts University School of Medicine, Boston, Massachusetts, United States of America
- * E-mail: (DAG); (XY)
| | - Sharath P. Sasi
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
| | - Hannah Gee
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
| | - JuYong Lee
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
- Calhoun Cardiology Center, University of Connecticut Health Center, Farmington, Connecticut, United States of America
| | - Yongyao Yang
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
| | - Raman Mehrzad
- Steward Carney Hospital, Dorchester, Massachusetts, United States of America
| | - Jillian Onufrak
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
| | - Jin Song
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
| | - Heiko Enderling
- Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida, United States of America
| | - Akhil Agarwal
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
| | - Layla Rahimi
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
| | - James Morgan
- Tufts University School of Medicine, Boston, Massachusetts, United States of America
- Steward Carney Hospital, Dorchester, Massachusetts, United States of America
| | - Paul F. Wilson
- Biosciences Department, Brookhaven National Laboratory, Upton, New York, United States of America
| | - Joseph Carrozza
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
- Tufts University School of Medicine, Boston, Massachusetts, United States of America
- Steward St. Elizabeth's Medical Center, Boston, Massachusetts, United States of America
| | - Kenneth Walsh
- Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - Raj Kishore
- Feinberg Cardiovascular Institute, Northwestern University, Chicago, Illinois, United States of America
| | - David A. Goukassian
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
- Tufts University School of Medicine, Boston, Massachusetts, United States of America
- Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts, United States of America
- * E-mail: (DAG); (XY)
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Sasi S, Park D, Zuriaga MA, Walsh K, Yan X, Goukassian DA. Abstract 134: Low Dose Particle Radiation Affects Long-Term Survival of Bone Marrow Progenitor Cell Populations. Circ Res 2014. [DOI: 10.1161/res.115.suppl_1.134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Radiation-induced decreases in the number of bone marrow (BM)-derived endothelial progenitor cell (BM-EPCs) and their lineage precursors which include Early- and Late-Multi-Potent Progenitor cells (E-MPP and L-MPP) could contribute to the pathogenesis of ischemic and vascular diseases. We examined the effect of full-body single dose of proton (1H) at 0.5 Gy, 1 GeV and 0.15 Gy, 1 GeV/nucleon of iron (56Fe) - ionizing radiation (IR) on survival and proliferation of BM-EPCs. The survival of E-MPPs and L-MPPs in the BM after particle IR in C57BL/6 mice were determined at 1, 2, 4, 8, 12, 28 and 40 weeks post-IR. BM-derived mononuclear cells were triple-stained with RAM34 (CD34, c-kit, and Sca1), AC133, and hematopoietic lineage negative cocktail, then sorted by FASC for E- and L-MPP. BM EPCs ex-vivo - There was a transient 2.5-3.5-fold increase in BM-EPC apoptosis, with 3.5-fold increases for 56Fe and 1H at 5hrs and 24hrs, respectively that was no longer detected by day 7. Subsequently, there was a 3-fold increase in BM-EPC apoptosis on day 28 for both ion-IR mice. Compared to 24 hrs, there was a ~20% (1H) and ~45% (56Fe) increase in the rate of EPC proliferation on day 14 that returned to control levels on day 28. BM E-MPP and L-MPP in vivo - Compared to control mice, 1H-IR increased the number of both E-MPPs (665%) and L-MPPs (203%), whereas 56Fe-IR decreased E-MPP (74%) and L-MPPs (65%) at 1 week post-IR, suggesting stimulation by 1H but overt damage by 56Fe in the BM milieu. In 56Fe-IR mice, E-MPPs recovered between 4 and 12 weeks, followed by declines at later time points. In 1H-IR mice, E-MPPs were near control levels up to 4 weeks, but declined at later time points. The long-lasting and cyclical effects of IR on the BM E- and L-MPPs after a single 1H or 56Fe IR dose suggests the presence of prolonged and non-targeted effects in BM milieu, that occur in cells that were not traversed by IR, rather induced by signals from IR cells. Our studies showed that, both 1H- and 56Fe-IR has profound and long-lasting (28-40 months) negative effects on the number of E- and L-MPPs. Future longitudinal studies are necessary to determine whether BM progenitor cells may be affected after terrestrial IR exposure, such as cancer radiotherapy, CT and PET scans, and in astronauts after exploration-type space missions.
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Affiliation(s)
| | | | | | | | - Xinhua Yan
- GenSys Rsch Institute, TUFTS UNIVERSITY SCHOOL OF MEDICINE, Boston, MA
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Sasi SP, Song J, Park D, Enderling H, McDonald JT, Gee H, Garrity B, Shtifman A, Yan X, Walsh K, Natarajan M, Kishore R, Goukassian DA. TNF-TNFR2/p75 signaling inhibits early and increases delayed nontargeted effects in bone marrow-derived endothelial progenitor cells. J Biol Chem 2014; 289:14178-93. [PMID: 24711449 DOI: 10.1074/jbc.m114.567743] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
TNF-α, a pro-inflammatory cytokine, is highly expressed after being irradiated (IR) and is implicated in mediating radiobiological bystander responses (RBRs). Little is known about specific TNF receptors in regulating TNF-induced RBR in bone marrow-derived endothelial progenitor cells (BM-EPCs). Full body γ-IR WT BM-EPCs showed a biphasic response: slow decay of p-H2AX foci during the initial 24 h and increase between 24 h and 7 days post-IR, indicating a significant RBR in BM-EPCs in vivo. Individual TNF receptor (TNFR) signaling in RBR was evaluated in BM-EPCs from WT, TNFR1/p55KO, and TNFR2/p75KO mice, in vitro. Compared with WT, early RBR (1-5 h) were inhibited in p55KO and p75KO EPCs, whereas delayed RBR (3-5 days) were amplified in p55KO EPCs, suggesting a possible role for TNFR2/p75 signaling in delayed RBR. Neutralizing TNF in γ-IR conditioned media (CM) of WT and p55KO BM-EPCs largely abolished RBR in both cell types. ELISA protein profiling of WT and p55KO EPC γ-IR-CM over 5 days showed significant increases in several pro-inflammatory cytokines, including TNF-α, IL-1α (Interleukin-1 alpha), RANTES (regulated on activation, normal T cell expressed and secreted), and MCP-1. In vitro treatments with murine recombinant (rm) TNF-α and rmIL-1α, but not rmMCP-1 or rmRANTES, increased the formation of p-H2AX foci in nonirradiated p55KO EPCs. We conclude that TNF-TNFR2 signaling may induce RBR in naïve BM-EPCs and that blocking TNF-TNFR2 signaling may prevent delayed RBR in BM-EPCs, conceivably, in bone marrow milieu in general.
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Affiliation(s)
- Sharath P Sasi
- From the Cardiovascular Research Center, Steward Research and Specialty Projects Corporation, Brighton, Massachusetts 02135
| | - Jin Song
- From the Cardiovascular Research Center, Steward Research and Specialty Projects Corporation, Brighton, Massachusetts 02135
| | - Daniel Park
- From the Cardiovascular Research Center, Steward Research and Specialty Projects Corporation, Brighton, Massachusetts 02135
| | - Heiko Enderling
- the Center of Cancer Systems Biology, GeneSys Research Institute, Boston, Massachusetts 02135, Department of Integrated Mathematical Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, Florida 33612, Tufts University School of Medicine, Boston, Massachusetts 02111
| | - J Tyson McDonald
- the Center of Cancer Systems Biology, GeneSys Research Institute, Boston, Massachusetts 02135, Tufts University School of Medicine, Boston, Massachusetts 02111
| | - Hannah Gee
- From the Cardiovascular Research Center, Steward Research and Specialty Projects Corporation, Brighton, Massachusetts 02135
| | - Brittany Garrity
- From the Cardiovascular Research Center, Steward Research and Specialty Projects Corporation, Brighton, Massachusetts 02135
| | - Alexander Shtifman
- From the Cardiovascular Research Center, Steward Research and Specialty Projects Corporation, Brighton, Massachusetts 02135, Tufts University School of Medicine, Boston, Massachusetts 02111
| | - Xinhua Yan
- From the Cardiovascular Research Center, Steward Research and Specialty Projects Corporation, Brighton, Massachusetts 02135, the Center of Cancer Systems Biology, GeneSys Research Institute, Boston, Massachusetts 02135, Tufts University School of Medicine, Boston, Massachusetts 02111
| | - Kenneth Walsh
- the Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts 02118
| | - Mohan Natarajan
- the University of Texas Health Science Center, San Antonio, Texas 78229, and
| | - Raj Kishore
- the Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, Illinois 60611
| | - David A Goukassian
- From the Cardiovascular Research Center, Steward Research and Specialty Projects Corporation, Brighton, Massachusetts 02135, Tufts University School of Medicine, Boston, Massachusetts 02111, the Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts 02118,
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Sasi SP, Bae S, Song J, Perepletchikov A, Schneider D, Carrozza J, Yan X, Kishore R, Enderling H, Goukassian DA. Therapeutic non-toxic doses of TNF induce significant regression in TNFR2-p75 knockdown Lewis lung carcinoma tumor implants. PLoS One 2014; 9:e92373. [PMID: 24664144 PMCID: PMC3963887 DOI: 10.1371/journal.pone.0092373] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Accepted: 02/19/2014] [Indexed: 12/22/2022] Open
Abstract
Tumor necrosis factor-alpha (TNF) binds to two receptors: TNFR1/p55-cytotoxic and TNFR2/p75-pro-survival. We have shown that tumor growth in p75 knockout (KO) mice was decreased more than 2-fold in Lewis lung carcinoma (LLCs). We hypothesized that selective blocking of TNFR2/p75 LLCs may sensitize them to TNF-induced apoptosis and affect the tumor growth. We implanted intact and p75 knockdown (KD)-LLCs (>90%, using shRNA) into wild type (WT) mice flanks. On day 8 post-inoculation, recombinant murine (rm) TNF-α (12.5 ng/gr of body weight) or saline was injected twice daily for 6 days. Tumor volumes (tV) were measured daily and tumor weights (tW) on day 15, when study was terminated due to large tumors in LLC+TNF group. Tubular bones, spleens and peripheral blood (PB) were examined to determine possible TNF toxicity. There was no significant difference in tV or tW between LLC minus (-) TNF and p75KD/LLC-TNF tumors. Compared to 3 control groups, p75KD/LLC+TNF showed >2-5-fold decreases in tV (p<0.001) and tW (p<0.0001). There was no difference in tV or tW end of study vs. before injections in p75KD/LLC+TNF group. In 3 other groups tV and tW were increased 2.7-4.5-fold (p<0.01, p<0.0002 and p<0.0001). Pathological examination revealed that 1/3 of p75KD/LLC+rmTNF tumors were 100% necrotic, the remaining revealed 40-60% necrosis. No toxicity was detected in bone marrow, spleen and peripheral blood. We concluded that blocking TNFR2/p75 in LLCs combined with intra-tumoral rmTNF injections inhibit LLC tumor growth. This could represent a novel and effective therapy against lung neoplasms and a new paradigm in cancer therapeutics.
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MESH Headings
- Animals
- Carcinoma, Lewis Lung/drug therapy
- Carcinoma, Lewis Lung/genetics
- Carcinoma, Lewis Lung/pathology
- Cell Proliferation/drug effects
- Cell Transformation, Neoplastic
- Dose-Response Relationship, Drug
- Gene Knockdown Techniques
- Male
- Mice
- Models, Biological
- Necrosis/chemically induced
- RNA, Small Interfering/genetics
- Receptors, Tumor Necrosis Factor, Type II/deficiency
- Receptors, Tumor Necrosis Factor, Type II/genetics
- Signal Transduction/drug effects
- Tumor Necrosis Factor-alpha/pharmacology
- Tumor Necrosis Factor-alpha/therapeutic use
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Affiliation(s)
- Sharath P. Sasi
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
| | - Sanggyu Bae
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
- Departments of Medicine and Pathology, Steward St. Elizabeth' Medical Center, Boston, Massachusetts, United States of America
| | - Jin Song
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
| | - Aleksandr Perepletchikov
- Departments of Medicine and Pathology, Steward St. Elizabeth' Medical Center, Boston, Massachusetts, United States of America
- Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Douglas Schneider
- Departments of Medicine and Pathology, Steward St. Elizabeth' Medical Center, Boston, Massachusetts, United States of America
- Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Joseph Carrozza
- Departments of Medicine and Pathology, Steward St. Elizabeth' Medical Center, Boston, Massachusetts, United States of America
- Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Xinhua Yan
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
- Tufts University School of Medicine, Boston, Massachusetts, United States of America
| | - Raj Kishore
- Feinberg Cardiovascular Institute, Northwestern University, Chicago, Illinois, United States of America
| | - Heiko Enderling
- Integrated Mathematical Oncology, Moffitt Cancer Center and Research Institute, Tampa, Florida, United States of America
| | - David A. Goukassian
- Cardiovascular Research Center, GeneSys Research Institute, Boston, Massachusetts, United States of America
- Tufts University School of Medicine, Boston, Massachusetts, United States of America
- * E-mail:
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Yan X, Sasi SP, Gee H, Lee J, Yang Y, Song J, Carrozza J, Goukassian DA. Radiation-associated cardiovascular risks for future deep-space missions. J Radiat Res 2014; 55:i37-i39. [PMCID: PMC3941505 DOI: 10.1093/jrr/rrt202] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Background: During the future Moon and Mars missions, astronauts will be exposed to space radiation (IR) for extended time. The majority of space flight-associated risks identified for the cardiovascular (CV) system to date were determined shortly after low Earth orbit (LEO) short- and long-duration space flights that include: serious cardiac dysrhythmias, compromised orthostatic CV response and manifestation of previously asymptomatic CV disease. Further ground-based experiments using a surrogate model of microgravity supported the space flight data for significant cardiac remodeling due to prolonged exposure to microgravity. These symptoms were determined to be a consequence of adaptation to microgravity that could be ameliorated by a post-mission exercise program, and were not identified as risk factors that were causatively related to space IR. Long-term degenerative effects of cosmic IR during and after space flights on CV system are unknown. It was suggested that due to GCR, each cell in an astronaut's body will be traversed by 1H every 3 days, helium (2He) nuclei every few weeks and high charge and energy (HZE) nuclei (e.g. 28Si, 56Fe) every few months. Despite the fact that only 1% of GCR is composed of ions heavier than helium, ∼41% of the IR dose-equivalent is predicted to be HZE particles with 13% being from 56Fe particles, only. During an exploration-class space mission to Mars, astronauts will not have access to comprehensive healthcare services for a period of at least 2–3 years. Since the majority of experienced astronauts are middle-aged (average age is 46, and the range is 33–58 years), they are at risk for developing serious CV events which could be life-threatening for the astronaut and mission-threatening for NASA. Therefore, it is important to evaluate the effects and potential CV risks caused by space IR. We hypothesized that: (i) low-dose space IR-induced biological responses may be long-lasting and are IR type-dependent; (ii) IR may increase CV risks in the aging heart (IR + AGING model) and affect the heart recovery after an adverse CV event, such as acute myocardial infarct (IR + AGING + AMI model). Methods: Eight- to 9-month-old C57BL/6N male mice were IR once with proton (1H) 50 cGy, 1 GeV/n or iron (56Fe) 15 cGy, 1 GeV/n. We evaluated IR-induced biological tissue responses—underlying molecular mechanisms, calcium handling, signal transduction, gene expression and cardiac fibrosis. Cardiac function was assessed by echocardiography (ECHO) and hemodynamic measurements (HEMO) as detailed in Fig. 1. AMI was induced by ligation of left anterior descending coronary artery 1 and 3 months post-IR as detailed in Fig. 2.Radiation + aging model. ![]() Radiation + aging model + adverse CV event model. ![]() Results: In the IR + AGING model, cardiac function was not different among the control and 1H-IR group, whereas left ventricular end-diastolic pressure (LVEDP) was significantly increased in 56Fe mice 1 and 3 months post-IR. There was a small but statistically significant (P < 0.04) improvement of ejection fraction % (EF%) in 1H-IR vs control mice. One month post-IR, compared with control, 1H- and 56Fe-IR hearts had a significant up-regulation of sarcolemmal Na+–Ca2+ exchanger (NCX) (∼200% P<0.007), sarco(endo)plasmic reticulum calcium-ATPase (SERCA2a, >200% increases, P < 0.02) and 400% decreases in p-p38 MAPK (P < 0.05), suggesting activation of compensatory mechanisms in [Ca2+]i handling in these hearts. By 3 months, compared with control, 1H- and 56Fe-IR hearts had 200–500% (P < 0.02) decreases in SERCA2a and more than 200% decreases in p-Creb-1 (P < 0.02), suggesting reduced capacity in intracellular [Ca2+]i handling. These data suggest that dysfunction in [Ca2+]i handling combined with LVEDP increase after 56Fe-IR may arise from the excessive demand on the heart due to prolonged activation of compensatory mechanisms that lead to changes in SERCA2a and p-Creb1 levels. This may represent a possible intracellular mechanism of heart failure in development in 56Fe-IR hearts. In the IR + AGING + AMI model, no mortality was observed among three different groups 1 or 3 months post-IR and up to 28 days post-AMI. However, 1 month post-IR and 28 days post-AMI, the infarct size was significantly smaller in 56Fe-IR (p < 0.003) and 1H-IR (p = n.s.) vs control-IR mice, suggesting that at 1 month, 56Fe-IR primes the heart to recover better after AMI. In contrast, 3 months post AMI, 1H-AMI mice had a better cardiac functional recovery compared with control-AMI and 56Fe-AMI mice. The ejection fraction (EF%) was most decreased in 56Fe-AMI mice (56Fe-AMI vs 1H-AMI: 18 vs 48%, P < 0.007, ∼65–70% pre-AMI EF% for all groups). There was a 2- to 4-fold increase in LVEDP in 56Fe-AMI vs 1H-AMI (P < 0.04), suggesting that 56Fe-AMI hearts developed cardiac de-compensation. Western blots showed that 3 days post-AMI, compared with control- and 1H-IR-AMI mice, 56Fe-IR-AMI hearts had a 4- to 7-fold (P < 0.04) decreases in p-Akt (Thr308), p-Erk1/2 (P < 0.007) and ∼2-fold (P < 0.01) increase in phosphorylated ribosomal protein S6 kinase (p-S6k, a readout for mTORC1 pathway activation), suggesting decreased survival and angiogenesis signaling and decreased autophagy in these hearts. Seven days post-AMI, the levels of p-pErk1/2 were comparable between all three treatment conditions. However, in 56Fe-IR-AMI hearts, the p-Akt (Thr308) levels remained 4-fold decreased. Additionally, here was a 3-fold (P<0.05) decrease in p-S6k levels and >10-fold increase in p-p38 MAPK level in 56Fe vs control and 1H-IR-AMI hearts, suggesting continuous decreases in the survival, proliferation and angiogenesis signaling (p-Akt and p-S6k) and increase in the apoptotic signaling (p-p38 MAPK) up to Day 7 post-AMI in 56Fe-IR-AMI mice. In summary, our results revealed that by 1 and 3 months post-IR in IR + AGING, 56Fe-IR but not 1H-IR mice had worse cardiac function. Further, a single 1H-IR 3 months prior to AMI improved, whereas 56Fe-IR worsened, recovery from AMI recovery. Our data in the IR + AGING and IR + AGING + AMI groups strongly suggest that low-dose HZE particle IR (56Fe) have long-lasting negative effect on heart homeostasis during normal aging, and present a significant CV risk for recovery after adverse CV event, such as AMI.
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Affiliation(s)
- Xinhua Yan
- CardioVascular Research Center, GeneSys Research Institute, Boston, MA, USA
- Tufts University School of Medicine, Boston, MA, USA
| | - Sharath P. Sasi
- CardioVascular Research Center, GeneSys Research Institute, Boston, MA, USA
| | - Hannah Gee
- CardioVascular Research Center, GeneSys Research Institute, Boston, MA, USA
| | - Juyong Lee
- Cardiovascular Division, Steward St Elizabeth's Medical Center, Boston, MA, USA
- Tufts University School of Medicine, Boston, MA, USA
| | - Yongyao Yang
- CardioVascular Research Center, GeneSys Research Institute, Boston, MA, USA
| | - Jin Song
- CardioVascular Research Center, GeneSys Research Institute, Boston, MA, USA
| | - Joseph Carrozza
- Cardiovascular Division, Steward St Elizabeth's Medical Center, Boston, MA, USA
- Tufts University School of Medicine, Boston, MA, USA
| | - David A. Goukassian
- CardioVascular Research Center, GeneSys Research Institute, Boston, MA, USA
- Tufts University School of Medicine, Boston, MA, USA
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Sasi SP, Yan X, Lee J, Sisakyan H, Carrozza J, Goukassian DA. Radiation-associated degenerative cardiovascular risks during normal aging and after adverse CV event 10 months post-initial exposure. J Radiat Res 2014; 55:i111-i112. [PMCID: PMC3941556 DOI: 10.1093/jrr/rrt201] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Background: During the future exploration-type space missions, astronauts will be exposed to ionizing radiation (IR) for more than 1–2 years. The effect of cosmic IR during and after space flights on the cardiovascular (CV) system is unknown. Therefore, it is important to evaluate space IR effects on the CV system and determine potential post-mission degenerative excess relative risks (ERR) to the heart as a function of normal aging (IR + AGING model) as well as determine whether space IR may affect the processes of recovery after an adverse CV event (i.e. acute myocardial infarct, AMI) during normal aging (IR + AGING + AMI model). Methods: Nine-month-old C57BL6N male mice were IR once with proton (50 cGy, 1 GeV/n) or (56Fe 15 cGy, 1 GeV/n). IR-induced alterations in cardiac function were assessed by echocardiography (ECHO) and hemodynamic measurements (HEMO). AMI was induced by ligation of left anterior descending (LAD) coronary artery 10 months post-IR. Mice were monitored over 28 days post-AMI. Results: Compared with control, in the IR + AGING study group, left ventricular end-systolic pressure (LVESP) was significantly decreased in both 1H- and 56Fe-IR (P < 0.03, both), suggesting IR-associated decrease in contractile function 10 month post-IRs. However, compared with age-matched control mice (18 months), the LV end-diastolic pressure (LVEDP) was significantly increased (P < 0.05) and minimum LV pressure change (dP/dt min, mmHg/sec) was significantly decreased (P < 0.02) in 1H-IR but not 56Fe-IR mice, suggesting that a single 50 cGy full body 1H-IR decreases considerably the relaxation function of the heart 10 months post-AMI. Of note, an increase in LVEDP and a decrease in dP/dt min are indicators that heart is not pumping blood well and is an early independent prognostic CV risk factor for development of cardiac de-compensation. In all three IR + AGING + AMI study groups, in average, there was 10–15% mortality up to 3 days post-AMI surgery with ∼90% survival rate in all groups 28 days post-AMI. This is rather very good survival rate for 18- to 20-month-old mice after permanent LAD ligation. In the IR + AGING + AMI study group, the most harmful effects on myocardial recovery 10 months post-IR and 28 days post-AMI were observed in the 56Fe-IR group. LVESP was significantly decreased in 56Fe-IR vs control and 1H-IR mice (P < 0.04 and <0.02, respectively). LVEDP was 3-fold higher in 56Fe-IR vs 1H-IR mice (P < 0.004) but was only slightly higher (P = n.s.) compared with control mice. However, dP/dt max and dP/dt min were significantly decreased in 56Fe-IR vs control (P < 0.007 and <0.05, respectively) and 1H-IR mice (P < 0.0004 and <0.0015, respectively), suggesting that 56Fe-AMI hearts developed cardiac de-compensation. Summary: Our data in the IR + AGING study group strongly suggest that 10 months post-IR low-dose high-energy 1H-IR but not low-dose HZE (56Fe) particle IR affects considerably contractile and relaxation functions during normal aging. Conversely, our data in the IR + AGING + AMI study group at 10 months post-IR taken together with our previously reported data for AMI recovery 3 month after a single 50 cGy 1H-IR and 15 cGy 56Fe-IR indicate that 3 months and as long as 10 months after a single full-body IR, the 56Fe-IR is detrimental, whereas 1H-IR does not have negative effects on post-AMI recovery. In fact, single 1H-IR, at this dose, was considerably beneficial for post-AMI recovery at 3 months, as well as at 10 months post-IR. Major conclusions: Our longitudinal 1, 3 and 10 months studies in the IR + AGING and IR + AGING + AMI groups reveal that a single full-body low-dose 1H and HZE particle radiation (56Fe) have long-lasting negative effect on heart homeostasis during normal aging (predominantly 56Fe and at 10 months 1H-IR, as well), and present a significant CV risk for recovery after adverse CV event (exclusively 56Fe-IR, whereas 1H-IR at this dose could beneficial). Further, the divergent effects of low dose 1H-IR vs 56Fe-IR on heart function during normal aging vs after adverse CV event suggest significantly different biological responses responsible for this ion-dependent dichotomy over 10 months post-IR and necessitate further in-depth studies into underlying molecular mechanisms.
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Affiliation(s)
- Sharath P. Sasi
- CardioVascular Research Center, GeneSys Research Institute, Boston, MA, USA
| | - Xinhua Yan
- CardioVascular Research Center, GeneSys Research Institute, Boston, MA, USA
- Tufts University School of Medicine, Boston, MA, USA
| | - Juyong Lee
- Cardiovascular Division, Steward St Elizabeth's Medical Center, Boston, MA, USA
- Tufts University School of Medicine, Boston, MA, USA
| | - Hamayak Sisakyan
- Department of Cardiology, Yerevan State Medical University, Yerevan, Armenia
| | - Joseph Carrozza
- Cardiovascular Division, Steward St Elizabeth's Medical Center, Boston, MA, USA
- Tufts University School of Medicine, Boston, MA, USA
| | - David A. Goukassian
- CardioVascular Research Center, GeneSys Research Institute, Boston, MA, USA
- Tufts University School of Medicine, Boston, MA, USA
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Shtifman A, Pezone MJ, Sasi SP, Agarwal A, Gee H, Song J, Perepletchikov A, Yan X, Kishore R, Goukassian DA. Divergent modification of low-dose ⁵⁶Fe-particle and proton radiation on skeletal muscle. Radiat Res 2013; 180:455-64. [PMID: 24131063 DOI: 10.1667/rr3329.1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
It is unknown whether loss of skeletal muscle mass and function experienced by astronauts during space flight could be augmented by ionizing radiation (IR), such as low-dose high-charge and energy (HZE) particles or low-dose high-energy proton radiation. In the current study adult mice were irradiated whole-body with either a single dose of 15 cGy of 1 GeV/n ⁵⁶Fe-particle or with a 90 cGy proton of 1 GeV/n proton particles. Both ionizing radiation types caused alterations in the skeletal muscle cytoplasmic Ca²⁺ ([Ca²⁺]i) homeostasis. ⁵⁶Fe-particle irradiation also caused a reduction of depolarization-evoked Ca²⁺ release from the sarcoplasmic reticulum (SR). The increase in the [Ca²⁺]i was detected as early as 24 h after ⁵⁶Fe-particle irradiation, while effects of proton irradiation were only evident at 72 h. In both instances [Ca²⁺]i returned to baseline at day 7 after irradiation. All ⁵⁶Fe-particle irradiated samples revealed a significant number of centrally localized nuclei, a histologic manifestation of regenerating muscle, 7 days after irradiation. Neither unirradiated control or proton-irradiated samples exhibited such a phenotype. Protein analysis revealed significant increase in the phosphorylation of Akt, Erk1/2 and rpS6k on day 7 in ⁵⁶Fe-particle irradiated skeletal muscle, but not proton or unirradiated skeletal muscle, suggesting activation of pro-survival signaling. Our findings suggest that a single low-dose ⁵⁶Fe-particle or proton exposure is sufficient to affect Ca²⁺ homeostasis in skeletal muscle. However, only ⁵⁶Fe-particle irradiation led to the appearance of central nuclei and activation of pro-survival pathways, suggesting an ongoing muscle damage/recovery process.
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Abstract
During the future Moon and Mars missions astronauts will be exposed to space radiation (IR) for extended time. The effect of cosmic IR during and after space flights on cardiovascular (CV) system is unknown. Nine-month old C57BL/6N male mice were IR once with proton 50 cGy or 56Fe 15 cGy, both at 1 GeV/nucleon. We evaluated IR-induced biological responses - underlying molecular mechanisms, calcium handling, signal transduction and gene expression. Cardiac function was assessed by echocardiography and hemodynamic measurements.
Left ventricular end diastolic pressure (LVEDP) was increased in 56Fe mice 1 and 3 months post-IR (p<0.001). One month post-IR, compared to control, proton- and 56Fe-IR sarcolemmal Na+-Ca2+ exchanger (NCX) (p<0.007) and sarco(endo)plasmic reticulum calcium-ATPase (SERCA2a, p<0.02) were both increased more than 200% and p-p38 was decreased 400% (p<0.05), suggesting activation of compensatory mechanisms in [Ca2+]i handling in these hearts.
By 3 months, compared to control, proton- and 56Fe-IR hearts SERCA2a and p-Creb1 was decreased 200-500% (p<0.02), suggesting reduced capacity in intracellular [Ca2+]i handling, suggesting that [Ca2+]i handling dysfunction combined with LVEDP increase in 56Fe-IR may be due to prolonged activation of compensatory mechanisms that lead to changes in SERCA2a and p-Creb1 levels.
By 10 months, compared to control, LVESP was decreased in proton- and 56Fe-IR (p<0.03), suggesting IR-associated decrease in contractile function. However, compared to age-matched controls (18 months), the LVEDP was increased (p<0.05) and dP/dt Min was decreased (p<0.02) in proton-IR but not 56Fe-IR mice. This data suggests that after 10 months proton- but not 56Fe-IR affects considerably contractile and relaxation functions during aging.
Our longitudinal 1, 3 and 10 months studies reveal that a single full body low dose proton- and 56Fe-IR have long-lasting negative effect on heart homeostasis during aging. The divergent effects of low dose proton vs. 56Fe-IR on heart function during aging suggest significantly different biological mechanisms responsible for this ion-dependent dichotomy over 10 months post-IR and necessitate further studies into underlying molecular mechanisms.
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Yan X, Yang Y, Lee J, Onufrak J, Sasi S, Fuseler J, Price RL, Borg TK, Morgan JP, Goukassian DA, Carrozza J. Combined Use of a PI3K-mTOR Dual Inhibitor and Doxorubicin Induced Cardiac Hypertrophy and Early Death in Mice. J Card Fail 2013. [DOI: 10.1016/j.cardfail.2013.06.219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Goukassian DA, Sharov A, Rhodes J, Coleman C, Eller MS, Sharova T, Bhawan J, Gilchrest BA. Topical application of thymidine dinucleotide to newborn mice reduces and delays development of UV-induced melanomas. J Invest Dermatol 2012; 132:2664-6. [PMID: 22696052 PMCID: PMC3443549 DOI: 10.1038/jid.2012.176] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Sasi SP, Park D, Hlatky L, Gilbert HY, Hahnfeldt P, Kunder S, Coleman C, Qin Q, Kishore R, Goukassian DA. Abstract 386: Breaking the harmony of TNF-α signaling for cancer treatment. Cancer Res 2011. [DOI: 10.1158/1538-7445.am2011-386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Tumor necrosis factor-alpha(TNF) binds two distinct receptors TNFR1/p55 and TNFR2/p75 and is implicated in processes of tumor growth, survival, differentiation, invasion, metastases, secretion of cytokines and pro-angiogenic factors. We hypothesized that inhibition of signaling via one or the other but not both TNF receptors may have deleterious effect on tumor growth.
We injected WT, p55 knockout(KO), p75KO and double p55KO/p75KO mice with 5×105 mouse Lewis lung carcinoma line (LLC1) mixed with Matrigel into the flank. Compared to day 1, tumors in WTs and p55KO/p75KOs became ∼343 % and ∼ 933% larger between days 14 and 21, respectively, whereas at the same period, tumor growth was inhibited in both p75KOs (46% and 51%, days 14 and 21, p<0.05) and p55KOs (42% and 38%, days 14 and 21, p<0.05). Tumors bisected from all genotypes 14 days post-inoculation were collected and processed for immunostaining for CD31, TUNEL, TNF and VEGF expression and imaged by confocal microscopy. TNF levels were significantly higher within genotype in tumor tissue vs normal skin in WT 10-fold (p<0.001), in p75KO 8.7-fold (p<0.001) and p55KO 6-fold (p<0.03). Compared to WTs, CD31 immunostaining revealed 80% (p<0.001) and 60% (p<0.02) decreases in capillary density in tumors from p75KO and p55KO, respectively. TUNEL staining showed ∼50% increases in TUNEL (+) cells in tumors of both p75KO and p55KO. VEGF expression was decreased more than 50% (p<0.001) in p75KO and 40% (p<0.02) in p55KO. Bone marrow(BM)-derived endothelial progenitor cells(EPC) were tracked into the tumor using BM/GFP transplantation model in combination with BS1-lectin perfusion and staining. Compared to WT and p55KOs there was ∼50% (p<0.05) decrease of BM-derived EPCs incorporation into the functional capillary network in p75KOs. Alterations in angiogenic and apoptotic signaling pathways in whole tumor tissue were analyzed using gene array analysis, which revealed that absence of either receptor had significant inhibitory effect (>2-fold) on several genes of angiogenic, anti-apoptotic and pro-survival pathways that include, but not limited to, VEGF A and B, HIF1-alpha, MAPK14(p38), HGF, IL1b, IL12a, Pgf, NFkB, Faim, Api5, Bnip3, Cxcl1, 2 and 10.
Our results indicate that absence of the signaling through either p75 or p55 in the tumor microenvironment only inhibits tumor growth by ∼50% by negatively regulating tumor angiogenesis, suggesting that inhibition of p75 or p55 in tumor tissue in vivo may deliver “double hit” by affecting survival of ECs, while higher TNF levels in tumor tissue may have self-destructive effect. Significantly higher deficiency in tumor angiogenesis in p75KOs vs p55KOs demonstrate inability of host p75KO ECs to survive in “hostile” tumor microenvironment (high TNF) as well as impede incorporation of BM-derived p75KO EPC's into tumor vasculature, suggesting that inhibition of tumor angiogenesis is a primary mechanism of tumor growth inhibition in p75KOs.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 102nd Annual Meeting of the American Association for Cancer Research; 2011 Apr 2-6; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2011;71(8 Suppl):Abstract nr 386. doi:10.1158/1538-7445.AM2011-386
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Affiliation(s)
- Shararth P. Sasi
- 1Center of Cancer Systems Biology, St. Elizabeth's Medical Center of Boston, Boston, MA
| | | | - Lynn Hlatky
- 3Tufts University School of Medicine and Center of Cancer Systems Biology, St. Elizabeth's Medical Center of Boston, Boston, MA
| | - Hu-Ya Gilbert
- 1Center of Cancer Systems Biology, St. Elizabeth's Medical Center of Boston, Boston, MA
| | - Philip Hahnfeldt
- 3Tufts University School of Medicine and Center of Cancer Systems Biology, St. Elizabeth's Medical Center of Boston, Boston, MA
| | - Sharon Kunder
- 1Center of Cancer Systems Biology, St. Elizabeth's Medical Center of Boston, Boston, MA
| | - Christina Coleman
- 1Center of Cancer Systems Biology, St. Elizabeth's Medical Center of Boston, Boston, MA
| | | | | | - David A. Goukassian
- 3Tufts University School of Medicine and Center of Cancer Systems Biology, St. Elizabeth's Medical Center of Boston, Boston, MA
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Kishore R, Tkebuchava T, Sasi SP, Silver M, Gilbert HY, Yoon YS, Park HY, Thorne T, Losordo DW, Goukassian DA. Tumor necrosis factor-α signaling via TNFR1/p55 is deleterious whereas TNFR2/p75 signaling is protective in adult infarct myocardium. Adv Exp Med Biol 2011; 691:433-48. [PMID: 21153348 DOI: 10.1007/978-1-4419-6612-4_45] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Raj Kishore
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL, USA
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Zattra E, Coleman C, Arad S, Helms E, Levine D, Bord E, Guillaume A, El-Hajahmad M, Zwart E, van Steeg H, Gonzalez S, Kishore R, Goukassian DA. Polypodium leucotomos extract decreases UV-induced Cox-2 expression and inflammation, enhances DNA repair, and decreases mutagenesis in hairless mice. Am J Pathol 2009; 175:1952-61. [PMID: 19808641 DOI: 10.2353/ajpath.2009.090351] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
UV-irradiated skin and UV-induced tumors overexpress the inducible isoform of cyclooxygenase-2 (Cox-2), and Cox-2 inhibition reduces photocarcinogenesis. To evaluate photoprotective effects of Polypodium leucotomos extract (PL), hairless Xpc(+/-) mice were fed for 10 days with PL (300 mg/kg) or vehicle then UV-irradiated, once. By 24 hours, UV-induced Cox-2 levels were increased in vehicle-fed and PL-fed mice, whereas by 48 and 72 hours, Cox-2 levels were four- to fivefold lower in PL-fed mice (P < 0.05). p53 expression/activity was increased in PL-fed versus vehicle-fed then UV-irradiated mice. UV-induced inflammation was decreased in PL-fed mice, as shown by approximately 60% decrease (P < 0.001) in neutrophil infiltration at 24 hours, and macrophages by approximately 50% (<0.02) at 24 and 48 hours. By 72 hours, 54 +/- 5% cyclobutane pyrimidine dimers remained in vehicle-fed versus 31 +/- 5% in PL-fed skin (P < 0.003). The number of 8-hydroxy-2'-deoxyguanosine-positive cells were decreased before UV irradiation by approximately 36% (P < 0.01), suggesting that PL reduces constitutive oxidative DNA damage. By 6 and 24 hours, the number of 8-hydroxy-2'-deoxyguanosine-positive cells were approximately 59% (P < 0.01) and approximately 79% (P < 0.03) lower in PL-fed versus vehicle-fed mice. Finally, UV-induced mutations in PL-fed-mice were decreased by approximately 25% when assessed 2 weeks after the single UV exposure. These data demonstrate that PL extract supplementation affords the following photoprotective effects: p53 activation and reduction of acute inflammation via Cox-2 enzyme inhibition, increased cyclobutane pyrimidine dimer removal, and reduction of oxidative DNA damage.
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Affiliation(s)
- Edoardo Zattra
- Department of Dermatology, Boston University School of Medicine, MA 02118, USA
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Arad S, Zattra E, Hebert J, Epstein EH, Goukassian DA, Gilchrest BA. Topical thymidine dinucleotide treatment reduces development of ultraviolet-induced basal cell carcinoma in Ptch-1+/- mice. Am J Pathol 2008; 172:1248-55. [PMID: 18403589 DOI: 10.2353/ajpath.2008.071117] [Citation(s) in RCA: 267] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Treatment with thymidine dinucleotide (pTT) has well documented DNA-protective effects and reduces development of squamous cell carcinoma in UV-irradiated mice. The preventive effect of pTT on basal cell carcinoma (BCC) was evaluated in UV-irradiated Ptch-1(+/-) mice, a model of the human disease Gorlin syndrome. Topical pTT treatment significantly reduced the number and size (P < 0.001) of BCCs in murine skin after 7 months of chronic irradiation. Skin biopsies collected 24 hours after the final UV exposure showed that pTT reduced the number of nuclei positive for cyclobutane pyrimidine dimers by 40% (P < 0.0002) and for 8-hydroxy-2'-deoxyguanosine by 61% (P < 0.01 compared with vehicle control). Immunostaining with an antibody specific for mutated p53 revealed 63% fewer positive patches in BCCs of pTT-treated mice compared with controls (P < 0.01), and the number of Ki-67-positive cells was decreased by 56% (P < 0.01) in pTT-treated tumor-free epidermis and by 76% (P < 0.001) in BCC tumor nests (P < 0.001). Terminal dUTP nick-end labeling staining revealed a 213% increase (P < 0.04) in the number of apoptotic cells in BCCs of pTT-treated mice. Cox-2 immunostaining was decreased by 80% in tumor-free epidermis of pTT-treated mice compared with controls (P < 0.01). We conclude that topical pTT treatment during a prolonged period of intermittent UV exposure decreases the number and size of UV-induced BCCs through several anti-cancer mechanisms.
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Affiliation(s)
- Simin Arad
- Department of Dermatology, Boston University School of Medicine, 609 Albany St., Boston, MA 02118, USA
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Abstract
To document and quantify inducible photoprotective effects in human skin, explant cultures were treated once with thymidine dinucleotide (pTT) or diluent alone or UV-irradiated. Both pTT and UV increased the melanogenic protein levels on days 1-5 and comparably increased melanocyte dendricity and epidermal melanin content. Explants treated with pTT or UV but not with diluent alone showed initial inhibition of epidermal proliferation followed by mild reactive hyperplasia; melanocyte proliferation was minimal. To determine whether pTT and UV provide comparable protection against subsequent UV-induced DNA damage, explants were pTT- or diluent-treated or UV-irradiated. All explants were then irradiated with the same UV dose 72 hours later. Compared to diluent alone, pTT or UV pretreatment decreased the number of epidermal cells positive for cyclobutane pyrimidine dimers (CPDs) 50% immediately post-irradiation. In pTT- and UV- versus diluent-pretreated explants, the rate of CPD removal was also more rapid, approximately 80 vs 45% of the initial burden within 72 hours. These data confirm and quantify comparable SOS-like responses in human skin after pTT or UV irradiation, attributable to both increased epidermal melanin and increased DNA repair rate, in the case of pTT in the absence of initial damage.
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Affiliation(s)
- Simin Arad
- Department of Dermatology, Boston University School of Medicine, Boston, Massachusetts 02118, USA
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Astner S, Wu A, Chen J, Philips N, Rius-Diaz F, Parrado C, Mihm MC, Goukassian DA, Pathak MA, González S. Dietary Lutein/Zeaxanthin Partially Reduces Photoaging and Photocarcinogenesis in Chronically UVB-Irradiated Skh-1 Hairless Mice. Skin Pharmacol Physiol 2007; 20:283-91. [PMID: 17717424 DOI: 10.1159/000107576] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2006] [Accepted: 05/10/2007] [Indexed: 11/19/2022]
Abstract
Lutein and zeaxanthin are xanthophyll carotenoids with potent antioxidant properties protecting the skin from acute photodamage. This study extended the investigation to chronic photodamage and photocarcinogenesis. Mice received either a lutein/zeaxanthin-supplemented diet or a standard nonsupplemented diet. Dorsal skin of female Skh-1 hairless mice was exposed to UVB radiation with a cumulative dose of 16,000 mJ/cm(2) for photoaging and 30,200 mJ/cm(2) for photocarcinogenesis. Clinical evaluations were performed weekly, and the animals were sacrificed 24 h after the last UVB exposure. For photoaging experiments, skin fold thickness, suprapapillary plate thickness, mast cell counts and dermal desmosine content were evaluated. For photocarcinogenesis, samples of tumors larger than 2 mm were analyzed for histological characterization, hyperproliferation index, tumor multiplicity, total tumor volume and tumor-free survival time. Results of the photoaging experiment revealed that skin fold thickness and number of infiltrating mast cells following UVB irradiation were significantly less in lutein/zeaxanthin-treated mice when compared to irradiated animals fed the standard diet. The results of the photocarcinogenesis experiment were increased tumor-free survival time, reduced tumor multiplicity and total tumor volume in lutein/zeaxanthin-treated mice in comparison with control irradiated animals fed the standard diet. These data demonstrate that dietary lutein/zeaxanthin supplementation protects the skin against UVB-induced photoaging and photocarcinogenesis.
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Affiliation(s)
- S Astner
- Wellman Center for Photomedicine, Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Goukassian DA, Qin G, Dolan C, Murayama T, Silver M, Curry C, Eaton E, Luedemann C, Ma H, Asahara T, Zak V, Mehta S, Burg A, Thorne T, Kishore R, Losordo DW. Tumor necrosis factor-alpha receptor p75 is required in ischemia-induced neovascularization. Circulation 2007; 115:752-62. [PMID: 17261656 DOI: 10.1161/circulationaha.106.647255] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Aging is a risk factor for coronary and peripheral artery disease. Tumor necrosis factor-alpha (TNF-alpha), a proinflammatory cytokine, is expressed in ischemic tissue and is known to modulate angiogenesis. Little is known about the role of TNF-alpha receptors (TNFR1/p55 and TNFR2/p75) in angiogenic signaling. METHODS AND RESULTS We studied neovascularization in the hindlimb ischemia model in young and old TNFR2/p75 knockout (p75KO) and wild-type age-matched controls. Between days 7 to 10 after hindlimb surgery, 100% of old p75KOs experienced autoamputation of the operated limbs, whereas none of the age-matched wild-type mice exhibited hindlimb necrosis. Poor blood flow recovery in p75KO mice was associated with increased endothelial cell apoptosis, decreased capillary density, and significant reductions in the expression of vascular endothelial growth factor and basic fibroblast growth factor-2 mRNA transcripts in ischemic tissue and in circulating endothelial progenitor cells. The number of circulating bone marrow-derived endothelial progenitor cells was significantly reduced in p75KO mice. Transplantation of wild-type bone marrow mononuclear cells into irradiated old p75KO mice 1 month before hindlimb surgery prevented limb loss. CONCLUSIONS Our present study suggests that ischemia-induced endothelial progenitor cell-mediated neovascularization is dependent, at least in part, on p75 TNF receptor expressed in bone marrow-derived cells. Specifically, endothelial cell/endothelial progenitor cell survival, vascular endothelial growth factor expression, endothelial progenitor cell mobilization from bone marrow, endothelial progenitor cell differentiation, and ultimately ischemia-induced collateral vessel development are dependent on signaling through TNFR2/p75. Furthermore, because TNFR2/p75 becomes an age-related limiting factor in postischemic recovery, it may be a potential gene target for therapeutic interventions in adult vascular diseases.
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Affiliation(s)
- David A Goukassian
- Division of Cardiovascular Diseases, Department of Medicine, Caritas St Elizabeth's Medical Center, Boston, Mass, USA.
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Abstract
We have shown that DNA oligonucleotides substantially homologous to the telomere 3-prime overhang sequence (T-oligos) increase DNA repair capacity (DRC) in cultured human cells and decrease UV-induced mutation rate and photocarcinogenesis in mouse skin. To investigate the protective effects of T-oligos in intact human skin, paired skin explants obtained from adult donors were treated with T-oligos or diluent alone for 24 h, then UVB- or sham-irradiated, and processed after 6, 24, 48, 72, and 96 h for histological analysis. After UV irradiation apoptotic epidermal cells were comparable in diluent- and T-oligo-treated skin. Proliferating (Ki67+) cells were sparse in sham-irradiated skin and for 24 h after UV in both diluent- and T-oligo-treated specimens. However, compared to diluent controls, at 48 and 72 h T-oligos significantly inhibited UV-induced rebound hyperproliferation. Maximum and comparable cyclobutane pyrimidine dimers (CPDs) were detected immediately after UV irradiation in diluent- and T-oligo-treated skin, but CPDs were strikingly reduced in T-oligo- vs. diluent-treated skin at 24, 48, and 72 h. Total and activated p53 protein was increased in T-oligo- vs. diluent-pretreated skin at the time of irradiation, and up to 3-fold increases persisted for 24 h post-UV. Over 5 days, UV irradiation and T-oligo comparably increased expression of melanogenic proteins and each increased epidermal melanin content 3- to 5-fold, with distinct nuclear capping in many keratinocytes. In combination, these findings predict that T-oligo treatment will increase melanogenesis, prolong epidermal arrest, and increase DNA repair rate after UV irradiation, thus decreasing the severity of acute and chronic photodamage in human skin. Moreover, the data document an inducible SOS-like response consisting of increased melanogenesis and increased DNA repair capacity in human skin following UV-induced damage that is also produced by T-oligos in the absence of initial damage.
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Affiliation(s)
- Simin Arad
- Department of Dermatology, Boston University School of Medicine, 609 Albany St., Boston, MA 02118, USA
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Qin G, Kishore R, Dolan CM, Silver M, Wecker A, Luedemann CN, Thorne T, Hanley A, Curry C, Heyd L, Dinesh D, Kearney M, Martelli F, Murayama T, Goukassian DA, Zhu Y, Losordo DW. Cell cycle regulator E2F1 modulates angiogenesis via p53-dependent transcriptional control of VEGF. Proc Natl Acad Sci U S A 2006; 103:11015-20. [PMID: 16835303 PMCID: PMC1544166 DOI: 10.1073/pnas.0509533103] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2005] [Indexed: 11/18/2022] Open
Abstract
The transcription factor E2F1 is known to regulate cell proliferation and has been thought to modulate tumorigenesis via this mechanism alone. Here we show that mice deficient in E2F1 exhibit enhanced angiogenesis. The proangiogenic phenotype in E2F1 deficiency is the result of overproduction of vascular endothelial growth factor (VEGF) and is prevented by VEGF blockade. Under hypoxic conditions, E2F1 down-regulates the expression of VEGF promoter activity by associating with p53 and specifically down-regulating expression of VEGF but not other hypoxia-inducible genes, suggesting a promoter structure context-dependent regulation mechanism. We found that the minimum VEGF promoter mediating transcriptional repression by E2F1 features an E2F1- binding site with four Sp-1 sites in close proximity. These data disclose an unexpected function of endogenous E2F1: regulation of angiogenic activity via p53-dependent transcriptional control of VEGF expression.
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Affiliation(s)
- Gangjian Qin
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Raj Kishore
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Christine M. Dolan
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Marcy Silver
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Andrea Wecker
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Corinne N. Luedemann
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Tina Thorne
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Allison Hanley
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Cynthia Curry
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Lindsay Heyd
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Deepika Dinesh
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Marianne Kearney
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Fabio Martelli
- Istituto Dermopatico dell’Immacolata, Istituto di Ricovero e Cura a Carattere Scientifico, 00167 Rome, Italy
| | - Toshinori Murayama
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - David A. Goukassian
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Yan Zhu
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
| | - Douglas W. Losordo
- *Division of Cardiovascular Research, Tufts University School of Medicine, Caritas St. Elizabeth’s Medical Center, Boston, MA 02135; and
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Qin G, Ii M, Silver M, Wecker A, Bord E, Ma H, Gavin M, Goukassian DA, Yoon YS, Papayannopoulou T, Asahara T, Kearney M, Thorne T, Curry C, Eaton L, Heyd L, Dinesh D, Kishore R, Zhu Y, Losordo DW. Functional disruption of alpha4 integrin mobilizes bone marrow-derived endothelial progenitors and augments ischemic neovascularization. ACTA ACUST UNITED AC 2006; 203:153-63. [PMID: 16401693 PMCID: PMC2118065 DOI: 10.1084/jem.20050459] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The cell surface receptor α4 integrin plays a critical role in the homing, engraftment, and maintenance of hematopoietic progenitor cells (HPCs) in the bone marrow (BM). Down-regulation or functional blockade of α4 integrin or its ligand vascular cell adhesion molecule-1 mobilizes long-term HPCs. We investigated the role of α4 integrin in the mobilization and homing of BM endothelial progenitor cells (EPCs). EPCs with endothelial colony-forming activity in the BM are exclusively α4 integrin–expressing cells. In vivo, a single dose of anti–α4 integrin antibody resulted in increased circulating EPC counts for 3 d. In hindlimb ischemia and myocardial infarction, systemically administered anti–α4 integrin antibody increased recruitment and incorporation of BM EPCs in newly formed vasculature and improved functional blood flow recovery and tissue preservation. Interestingly, BM EPCs that had been preblocked with anti–α4 integrin ex vivo or collected from α4 integrin–deficient mice incorporated as well as control cells into the neovasculature in ischemic sites, suggesting that α4 integrin may be dispensable or play a redundant role in EPC homing to ischemic tissue. These data indicate that functional disruption of α4 integrin may represent a potential angiogenic therapy for ischemic disease by increasing the available circulating supply of EPCs.
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Affiliation(s)
- Gangjian Qin
- Cardiovascular Research, Caritas St. Elizabeth's Medical Center, Tufts University School of Medicine, Boston, MA 02135
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Marwaha V, Chen YH, Helms E, Arad S, Inoue H, Bord E, Kishore R, Sarkissian RD, Gilchrest BA, Goukassian DA. T-oligo treatment decreases constitutive and UVB-induced COX-2 levels through p53- and NFkappaB-dependent repression of the COX-2 promoter. J Biol Chem 2005; 280:32379-88. [PMID: 16046401 DOI: 10.1074/jbc.m503245200] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Chronically irradiated murine skin and UV light-induced squamous cell carcinomas overexpress the inducible isoform of cyclooxygenase (COX-2), and COX-2 inhibition reduces photocarcinogenesis in mice. We have reported previously that DNA oligonucleotides substantially homologous to the telomere 3'-overhang (T-oligos) induce DNA repair capacity and multiple other cancer prevention responses, in part through up-regulation and activation of p53. To determine whether T-oligos affect COX-2 expression, human newborn keratinocytes and fibroblasts were pretreated with T-oligos or diluent alone for 24 h, UV-irradiated, and processed for Western blotting. In both cell types, T-oligos transcriptionally down-regulated base-line and UV light-induced COX-2 expression, coincident with p53 activation. In fibroblasts with wild type versus dominant negative p53 (p53(WT) versus p53(DN)), T-oligos decreased constitutive expression of a COX-2 reporter plasmid by >50%. We then examined NFkappaB, a known positive regulator of COX-2 transcription. In p53(WT) but not in p53(DN) fibroblasts and in human keratinocytes, T-oligos decreased readout of an NFkappaB promoter-driven reporter plasmid and decreased NFkappaB binding to DNA. After T-oligo treatment and subsequent UV irradiation, binding of the transcriptional co-activator protein p300 to NFkappaB was decreased, whereas binding of p300 to p53 was increased. Human skin explants provided with T-oligos had markedly decreased COX-2 immunostaining both at base-line and post-UV light, coincident with increased p53 immunostaining. We conclude that T-oligos transcriptionally down-regulate COX-2 expression in human skin via activation and up-regulation of p53, at least in part by inhibiting NFkappaB transcriptional activation. Decreased COX-2 expression may contribute to the observed ability of T-oligos to reduce photocarcinogenesis.
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Affiliation(s)
- Vaneeta Marwaha
- Department of Dermatology, Boston University School of Medicine, Massachusetts 02118, USA
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Goukassian DA, Gilchrest BA. The interdependence of skin aging, skin cancer, and DNA repair capacity: a novel perspective with therapeutic implications. Rejuvenation Res 2005; 7:175-85. [PMID: 15588518 DOI: 10.1089/rej.2004.7.175] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The human body is constantly exposed to exogenous and endogenous insults that threaten its genomic integrity and that lead to changes at the molecular, biochemical, and cellular levels. As a major interface between the environment and the internal milieu, our skin is especially subject to such events. Common insults include but are not limited to infectious agents, environmental pollutions and toxins, carcinogens, and ultraviolet (UV) irradiation. It is estimated that there are thousands of DNA alterations in each cell daily. Therefore, if not efficiently repaired, our genome would rapidly be destroyed. This review focuses predominantly on UV-induced DNA damage in human skin, protective molecular responses to UV damage, and the consequences of these opposing forces for aging and photocarcinogenesis.
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Affiliation(s)
- David A Goukassian
- Department of Dermatology,Boston University School of Medicine, Boston, MA 02118, USA
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