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Coulis G, Jaime D, Guerrero-Juarez C, Kastenschmidt JM, Farahat PK, Nguyen Q, Pervolarakis N, McLinden K, Thurlow L, Movahedi S, Hughes BS, Duarte J, Sorn A, Montoya E, Mozaffar I, Dragan M, Othy S, Joshi T, Hans CP, Kimonis V, MacLean AL, Nie Q, Wallace LM, Harper SQ, Mozaffar T, Hogarth MW, Bhattacharya S, Jaiswal JK, Golann DR, Su Q, Kessenbrock K, Stec M, Spencer MJ, Zamudio JR, Villalta SA. Single-cell and spatial transcriptomics identify a macrophage population associated with skeletal muscle fibrosis. Sci Adv 2023; 9:eadd9984. [PMID: 37418531 PMCID: PMC10328414 DOI: 10.1126/sciadv.add9984] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 06/05/2023] [Indexed: 07/09/2023]
Abstract
Macrophages are essential for skeletal muscle homeostasis, but how their dysregulation contributes to the development of fibrosis in muscle disease remains unclear. Here, we used single-cell transcriptomics to determine the molecular attributes of dystrophic and healthy muscle macrophages. We identified six clusters and unexpectedly found that none corresponded to traditional definitions of M1 or M2 macrophages. Rather, the predominant macrophage signature in dystrophic muscle was characterized by high expression of fibrotic factors, galectin-3 (gal-3) and osteopontin (Spp1). Spatial transcriptomics, computational inferences of intercellular communication, and in vitro assays indicated that macrophage-derived Spp1 regulates stromal progenitor differentiation. Gal-3+ macrophages were chronically activated in dystrophic muscle, and adoptive transfer assays showed that the gal-3+ phenotype was the dominant molecular program induced within the dystrophic milieu. Gal-3+ macrophages were also elevated in multiple human myopathies. These studies advance our understanding of macrophages in muscular dystrophy by defining their transcriptional programs and reveal Spp1 as a major regulator of macrophage and stromal progenitor interactions.
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Affiliation(s)
- Gerald Coulis
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
- Institute for Immunology, University of California Irvine, Irvine, CA, USA
| | - Diego Jaime
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
- Institute for Immunology, University of California Irvine, Irvine, CA, USA
| | | | - Jenna M. Kastenschmidt
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
- Institute for Immunology, University of California Irvine, Irvine, CA, USA
| | - Philip K. Farahat
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
- Institute for Immunology, University of California Irvine, Irvine, CA, USA
| | - Quy Nguyen
- Department of Biological Chemistry, University of California Irvine, Irvine, CA USA
| | | | - Katherine McLinden
- Department of Molecular Cell and Developmental Biology, University of California Los Angeles, Los Angeles, CA, USA
| | - Lauren Thurlow
- Department of Molecular Cell and Developmental Biology, University of California Los Angeles, Los Angeles, CA, USA
| | - Saba Movahedi
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
| | - Brandon S. Hughes
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
| | - Jorge Duarte
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
| | - Andrew Sorn
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
| | - Elizabeth Montoya
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
| | - Izza Mozaffar
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
| | - Morgan Dragan
- Department of Biological Chemistry, University of California Irvine, Irvine, CA USA
| | - Shivashankar Othy
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
- Institute for Immunology, University of California Irvine, Irvine, CA, USA
| | - Trupti Joshi
- Department of Health Management and Informatics, University of Missouri, Columbia, MO, USA
| | - Chetan P. Hans
- Department of Cardiovascular Medicine, University of Missouri, Columbia, MO USA
| | - Virginia Kimonis
- Department of Pediatrics, University of California Irvine, Irvine, CA, USA
| | - Adam L. MacLean
- Department of Quantitative and Computational Biology, University of Southern California, Los Angeles, CA, USA
| | - Qing Nie
- Department of Mathematics, Department of Developmental and Cell Biology, University of California Irvine, Irvine, CA, USA
| | - Lindsay M. Wallace
- Center for Gene Therapy, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, USA
| | - Scott Q. Harper
- Center for Gene Therapy, The Abigail Wexner Research Institute at Nationwide Children’s Hospital, Columbus, OH, USA
- Department of Pediatrics, The Ohio State University, Columbus, OH, USA
| | - Tahseen Mozaffar
- Department of Neurology, University of California Irvine, Irvine, CA, USA
- Department of Pathology and Laboratory Medicine, University of California Irvine, Irvine, CA, USA
| | - Marshall W. Hogarth
- Children’s National Hospital, Research Center for Genetic Medicine, Washington, DC, USA
| | - Surajit Bhattacharya
- Children’s National Hospital, Research Center for Genetic Medicine, Washington, DC, USA
| | - Jyoti K. Jaiswal
- Children’s National Hospital, Research Center for Genetic Medicine, Washington, DC, USA
| | | | - Qi Su
- Regeneron Pharmaceuticals Inc., Tarrytown, NY, USA
| | - Kai Kessenbrock
- Department of Biological Chemistry, University of California Irvine, Irvine, CA USA
| | - Michael Stec
- Regeneron Pharmaceuticals Inc., Tarrytown, NY, USA
| | - Melissa J. Spencer
- Department of Neurology, University of California Los Angeles, Los Angeles, CA, USA
| | - Jesse R. Zamudio
- Department of Molecular Cell and Developmental Biology, University of California Los Angeles, Los Angeles, CA, USA
| | - S. Armando Villalta
- Department of Physiology and Biophysics, University of California Irvine, Irvine, CA, USA
- Institute for Immunology, University of California Irvine, Irvine, CA, USA
- Department of Neurology, University of California Irvine, Irvine, CA, USA
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2
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Coulis G, Jaime D, Guerrero-Juarez C, Kastenschmidt JM, Farahat PK, Nguyen Q, Pervolarakis N, McLinden K, Thurlow L, Movahedi S, Duarte J, Sorn A, Montoya E, Mozaffar I, Dragan M, Othy S, Joshi T, Hans CP, Kimonis V, MacLean AL, Nie Q, Wallace LM, Harper SQ, Mozaffar T, Hogarth MW, Bhattacharya S, Jaiswal JK, Golann DR, Su Q, Kessenbrock K, Stec M, Spencer MJ, Zamudio JR, Villalta SA. Single-cell and spatial transcriptomics identify a macrophage population associated with skeletal muscle fibrosis. bioRxiv 2023:2023.04.18.537253. [PMID: 37131694 PMCID: PMC10153153 DOI: 10.1101/2023.04.18.537253] [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] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The monocytic/macrophage system is essential for skeletal muscle homeostasis, but its dysregulation contributes to the pathogenesis of muscle degenerative disorders. Despite our increasing knowledge of the role of macrophages in degenerative disease, it still remains unclear how macrophages contribute to muscle fibrosis. Here, we used single-cell transcriptomics to determine the molecular attributes of dystrophic and healthy muscle macrophages. We identified six novel clusters. Unexpectedly, none corresponded to traditional definitions of M1 or M2 macrophage activation. Rather, the predominant macrophage signature in dystrophic muscle was characterized by high expression of fibrotic factors, galectin-3 and spp1. Spatial transcriptomics and computational inferences of intercellular communication indicated that spp1 regulates stromal progenitor and macrophage interactions during muscular dystrophy. Galectin-3 + macrophages were chronically activated in dystrophic muscle and adoptive transfer assays showed that the galectin-3 + phenotype was the dominant molecular program induced within the dystrophic milieu. Histological examination of human muscle biopsies revealed that galectin-3 + macrophages were also elevated in multiple myopathies. These studies advance our understanding of macrophages in muscular dystrophy by defining the transcriptional programs induced in muscle macrophages, and reveal spp1 as a major regulator of macrophage and stromal progenitor interactions.
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Affiliation(s)
- Gerald Coulis
- Department of Physiology and Biophysics, University of California Irvine, USA
- Institute for Immunology, University of California Irvine, USA
| | - Diego Jaime
- Department of Physiology and Biophysics, University of California Irvine, USA
- Institute for Immunology, University of California Irvine, USA
| | - Christian Guerrero-Juarez
- Department of Mathematics, University of California Irvine, USA
- Department of Developmental and Cell Biology, University of California Irvine, USA
| | - Jenna M. Kastenschmidt
- Department of Physiology and Biophysics, University of California Irvine, USA
- Institute for Immunology, University of California Irvine, USA
| | - Philip K. Farahat
- Department of Physiology and Biophysics, University of California Irvine, USA
- Institute for Immunology, University of California Irvine, USA
| | - Quy Nguyen
- Department of Biological Chemistry, University of California Irvine, USA
| | | | - Katherine McLinden
- Department of Molecular Cell and Developmental Biology, University of California Los Angeles, USA
| | - Lauren Thurlow
- Department of Molecular Cell and Developmental Biology, University of California Los Angeles, USA
| | - Saba Movahedi
- Department of Physiology and Biophysics, University of California Irvine, USA
| | - Jorge Duarte
- Department of Physiology and Biophysics, University of California Irvine, USA
| | - Andrew Sorn
- Department of Physiology and Biophysics, University of California Irvine, USA
| | - Elizabeth Montoya
- Department of Physiology and Biophysics, University of California Irvine, USA
| | - Izza Mozaffar
- Department of Physiology and Biophysics, University of California Irvine, USA
| | - Morgan Dragan
- Department of Molecular Cell and Developmental Biology, University of California Los Angeles, USA
| | - Shivashankar Othy
- Department of Physiology and Biophysics, University of California Irvine, USA
- Institute for Immunology, University of California Irvine, USA
| | - Trupti Joshi
- Department of Health Management and Informatics, University of Missouri, Columbia, USA
| | - Chetan P. Hans
- Department of Cardiovascular Medicine, University of Missouri, Columbia, USA
| | | | - Adam L. MacLean
- Department of Quantitative and Computational Biology, University of Southern California, Los Angeles, USA
| | - Qing Nie
- Department of Mathematics, University of California Irvine, USA
- Department of Developmental and Cell Biology, University of California Irvine, USA
| | - Lindsay M. Wallace
- Center for Gene Therapy, The Abigail Wexner Research Institute at Nationwide Children’s Hospital
| | - Scott Q. Harper
- Department of Pediatrics, The Ohio State University, Columbus, OH, USA
- Center for Gene Therapy, The Abigail Wexner Research Institute at Nationwide Children’s Hospital
| | - Tahseen Mozaffar
- Department of Neurology, University of California Irvine, USA
- Department of Pathology and Laboratory Medicine, University of California Irvine, USA
| | - Marshall W. Hogarth
- Children’s National Hospital, Research Center for Genetic Medicine, Washington, DC, USA
| | - Surajit Bhattacharya
- Children’s National Hospital, Research Center for Genetic Medicine, Washington, DC, USA
| | - Jyoti K. Jaiswal
- Children’s National Hospital, Research Center for Genetic Medicine, Washington, DC, USA
| | | | - Qi Su
- Regeneron Pharmaceuticals, Inc., Tarrytown, NY, USA
| | - Kai Kessenbrock
- Department of Biological Chemistry, University of California Irvine, USA
| | - Michael Stec
- Regeneron Pharmaceuticals, Inc., Tarrytown, NY, USA
| | | | - Jesse R. Zamudio
- Department of Molecular Cell and Developmental Biology, University of California Los Angeles, USA
| | - S. Armando Villalta
- Department of Physiology and Biophysics, University of California Irvine, USA
- Institute for Immunology, University of California Irvine, USA
- Department of Neurology, University of California Irvine, USA
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Hans CP, Sharma N, Downey E, Khoobchandani M, Katti K, Katti KV. Mangiferin Conjugated Gold Nanoparticles Protect against the Development of Abdominal Aortic Aneurysm in an Apoe−/− Mouse Model. JVS Vasc Sci 2022. [DOI: 10.1016/j.jvssci.2022.05.038] [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: 11/16/2022] Open
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Hans CP, Sharma N, Downey E, Khoobchandani M, Katti K, Katti KV. Abstract 300: Mangiferin Conjugated Gold Nanoparticles Protect Against The Development Of Abdominal Aortic Aneurysm In Apoe–/– Mouse Model. Arterioscler Thromb Vasc Biol 2022. [DOI: 10.1161/atvb.42.suppl_1.300] [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] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Objective:
There are no drugs to prevent the growth of abdominal aortic aneurysm (AAA), responsible for ~200,000 deaths in the world each year. There is a growing interest in natural anti-inflammatory compounds using nanotechnology-based drug-delivery. Mangiferin (MGF) is one such phytochemical isolated from Mangifera indica. Conjugation of MGF on gold nanoparticles (MGF-AuNPs) enhances bioavailability, through cellular penetration, presenting new opportunities toward the design of innovative nanomedicine agents. Recently, we have demonstrated the unique applications of MGF-AuNPs as an immunomodulatory therapeutic agent in the treatment of metastatic breast and prostate cancers. Here, we investigated whether MGF-AuNPs prevent the development of AAA.
Approach and Results:
Apoe
–/–
mice were subjected to angiotensin (AngII; 1μg/min/kg)-induced AAA. MGF-AuNPs (~7 mg/30g mouse) or starch (S)-AuNPs were administered daily, a week prior to AngII and continued for 28 days (n=6-12 per group). The incidences of AAA were significantly attenuated with MGF-AuNPs than AngII group (P<0.001), associated with a decrease in maximal intra-luminal diameter (P<0.001), pulse wave velocity (P<0.001), distensibility (P<0.05) and radial strain (P<0.05). Degradation of elastin (P<0.001), pro-inflammatory cytokines (P<0.01) and apoptotic cell death (P<0.01) were significantly reduced in the aortae of MGF-AuNPs treated
Apoe
–/–
mice than AngII group. Mechanistically, Notch1, its ligands (Jag1, Dll4) and downstream targets (HeyL, NFκB2, pStat3), were significantly reduced by MGF-AuNPs in the aorta (P<0.01) than AngII group. In the macrophages overexpressed with activated Notch1 (NICD), MGF-AuNPs significantly diminished the expression of Jag1 (P<0.001), HeyL (P<0.001), Il6 (P<0.001) and NFκB2 (P<0.001). MGF-AuNPs also prevented the nuclear translocation of NICD and its downstream effector pStat3, in the macrophages transfected with NICD plasmid.
Conclusion:
Our studies provide compelling pre-clinical evidence of protective effects of MGF-AuNPs on AAA development through inactivation of Notch1 signaling, thus present realistic potential toward clinical translation of this nanoceutical for use as a non-invasive effective treatment for AAA.
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Jones B, Debski A, Hans CP, Go MR, Agarwal G. Structurally abnormal collagen fibrils in abdominal aortic aneurysm resist platelet adhesion. J Thromb Haemost 2022; 20:470-477. [PMID: 34714974 DOI: 10.1111/jth.15576] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/16/2021] [Accepted: 10/27/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND Platelet adhesion to the subendothelial collagen fibrils is one of the first steps in hemostasis. Understanding how structural perturbations in the collagen fibril affect platelet adhesion can provide novel insights into disruption of hemostasis in various diseases. We have recently identified the presence of abnormal collagen fibrils with compromised D-periodic banding in the extracellular matrix remodeling present in abdominal aortic aneurysms (AAA). OBJECTIVE In this study, we employed multimodal microscopy approaches to characterize how collagen fibril structure impacts platelet adhesion in clinical AAA tissues. METHODS Ultrastructural atomic force microscopy (AFM) analysis was performed on tissue sections after staining with fluorescently labeled collagen hybridizing peptide (CHP) to recognize degraded collagen. Second harmonic generation (SHG) microscopy was used on CHP-stained sections to identify regions of intact versus degraded collagen. Finally, platelet adhesion was identified via SHG and indirect immunofluorescence on the same tissue sections. RESULTS Our results indicate that ultrastructural features characterizing collagen fibril abnormalities coincide with CHP staining. SHG signal was absent from CHP-positive regions. Additionally, platelet binding was primarily localized to regions with SHG signal. Abnormal collagen fibrils present in AAA (in SHG negative regions) were thus found to inhibit platelet adhesion compared to normal fibrils. CONCLUSIONS Our investigations reveal how the collagen fibril structure in the vessel wall can serve as another regulator of platelet-collagen adhesion. These results can be broadly applied to understand the role of collagen fibril structure in regulating thrombosis or bleeding disorders.
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Affiliation(s)
- Blain Jones
- Biomedical Engineering Graduate Program, The Ohio State University, Columbus, Ohio, USA
| | - Anna Debski
- Department of Material Science and Engineering, The Ohio State University, Columbus, Ohio, USA
| | - Chetan P Hans
- Department of Cardiovascular Medicine, Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, USA
| | - Michael R Go
- Division of Vascular Surgery, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
| | - Gunjan Agarwal
- Department of Mechanical and Aerospace Engineering, The Ohio State University, Columbus, Ohio, USA
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6
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Chockalingam A, Kumar S, Ferrer MS, Gajagowni S, Isaac M, Karuparthi P, Aggarwal K, Shunmugam S, Amuthan A, Aggarwal A, Hans CP, Krishnaswamy K, Dorairajan S, Liu Z, Flaker G. Siddha fasting in obese acute decompensated heart failure may improve hospital outcomes through empowerment and natural ketosis. Explore (NY) 2021; 18:714-718. [PMID: 34987003 DOI: 10.1016/j.explore.2021.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 11/07/2021] [Revised: 12/01/2021] [Accepted: 12/11/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Morbid obesity (BMI > 35 kg/m2 with comorbid conditions) is present in 25 - 35% of acute decompensated heart failure (AHF) patients. Prevalence of HF increases with duration of morbid obesity from 30% at 15 years to over 90% at 30 years. There is a need to develop pragmatic therapies that address the unique physical and mental challenges faced by obese AHF patients. Siddha is 5,000 year old Tamil Medicine using yoga and mind-body methods towards higher consciousness. Hunger gratitude Experience (HUGE) is intuitive Siddha fasting method which may improve in-hospital AHF outcomes independent of weight reduction. CASE SUMMARY We present 5 cases of morbidly obese patients with cardiorenal syndrome (CRS) that began intermittent fasting either during their AHF hospitalization or in the outpatient setting for refractory symptoms despite hospitalization. Initiation of fasting correlated with reduction of respiratory distress and edema as well as improvements in psychological wellbeing and functional capacity. DISCUSSION Siddha fasting mediates hemodynamic and anti-inflammatory effects through natural ketosis and psychological benefits through empowerment in AHF. Potential role of fasting in reducing myocardial workload, coronary steal, angina, volume overload, and CRS needs further study in cardiac patients.
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Affiliation(s)
- Anand Chockalingam
- Division of Cardiovascular Medicine, University of Missouri, Columbia, MO 65212, United States; Harry S. Truman Memorial Veterans Hospital, Columbia, MO, United States.
| | - Senthil Kumar
- Division of Cardiovascular Medicine, University of Missouri, Columbia, MO 65212, United States; Harry S. Truman Memorial Veterans Hospital, Columbia, MO, United States
| | - Mauricio Sendra Ferrer
- Division of Cardiovascular Medicine, University of Missouri, Columbia, MO 65212, United States
| | - Saivaroon Gajagowni
- Division of Cardiovascular Medicine, University of Missouri, Columbia, MO 65212, United States
| | - Maxwell Isaac
- Division of Cardiovascular Medicine, University of Missouri, Columbia, MO 65212, United States
| | - Poorna Karuparthi
- Division of Cardiovascular Medicine, University of Missouri, Columbia, MO 65212, United States; Harry S. Truman Memorial Veterans Hospital, Columbia, MO, United States
| | - Kul Aggarwal
- Division of Cardiovascular Medicine, University of Missouri, Columbia, MO 65212, United States; Harry S. Truman Memorial Veterans Hospital, Columbia, MO, United States
| | - Selva Shunmugam
- Siddha Consultant of Health India Foundation Clinic for Integrated Siddha and Modern medicine, India
| | - Arul Amuthan
- Siddha Consultant, Department of Pharmacology, Melaka Manipal Medical College, India
| | - Arpit Aggarwal
- Department of Psychiatry, University of Missouri, Columbia, MO 65212, United States
| | - Chetan P Hans
- Division of Cardiovascular Medicine, University of Missouri, Columbia, MO 65212, United States
| | - Kiruba Krishnaswamy
- Department of Biomedical, Biological & Chemical Engineering, Division of Food Systems & Bioengineering (Food Science and Nutrition), University of Missouri, Columbia, MO 65211, United States
| | - Smrita Dorairajan
- Harry S. Truman Memorial Veterans Hospital, Columbia, MO, United States; Division of Nephrology, University of Missouri, Columbia, MO 65212, United States
| | - Zhenguo Liu
- Division of Cardiovascular Medicine, University of Missouri, Columbia, MO 65212, United States
| | - Greg Flaker
- Division of Cardiovascular Medicine, University of Missouri, Columbia, MO 65212, United States
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7
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Khoobchandani M, Khan A, Katti KK, Thipe VC, Al-Yasiri AY, MohanDoss DKD, Nicholl MB, Lugão AB, Hans CP, Katti KV. Green nanotechnology of MGF-AuNPs for immunomodulatory intervention in prostate cancer therapy. Sci Rep 2021; 11:16797. [PMID: 34408231 PMCID: PMC8373987 DOI: 10.1038/s41598-021-96224-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [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: 12/23/2020] [Accepted: 08/05/2021] [Indexed: 02/07/2023] Open
Abstract
Men with castration-resistant prostate cancer (CRPC) face poor prognosis and increased risk of treatment-incurred adverse effects resulting in one of the highest mortalities among patient population globally. Immune cells act as double-edged sword depending on the tumor microenvironment, which leads to increased infiltration of pro-tumor (M2) macrophages. Development of new immunomodulatory therapeutic agents capable of targeting the tumor microenvironment, and hence orchestrating the transformation of pro-tumor M2 macrophages to anti-tumor M1, would substantially improve treatment outcomes of CRPC patients. We report, herein, Mangiferin functionalized gold nanoparticulate agent (MGF-AuNPs) and its immunomodulatory characteristics in treating prostate cancer. We provide evidence of immunomodulatory intervention of MGF-AuNPs in prostate cancers through observations of enhanced levels of anti-tumor cytokines (IL-12 and TNF-α) with concomitant reductions in the levels of pro-tumor cytokines (IL-10 and IL-6). In the MGF-AuNPs treated groups, IL-12 was elevated to ten-fold while TNF-α was elevated to about 50-fold, while IL-10 and IL-6 were reduced by two-fold. Ability of MGF-AuNPs to target splenic macrophages is invoked via targeting of NF-kB signaling pathway. Finally, therapeutic efficacy of MGF-AuNPs, in treating prostate cancer in vivo in tumor bearing mice, is described taking into consideration various immunomodulatory interventions triggered by this green nanotechnology-based nanomedicine agent.
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Affiliation(s)
- Menka Khoobchandani
- Department of Radiology, Institute of Green Nanotechnology, University of Missouri, Columbia, MO, 65212, USA
- Department of Radiation Oncology, Washington University School of Medicine, 4511 Forest Park Ave, St. Louis, MO, 63108, USA
| | - Aslam Khan
- Department of Biochemistry, University of Missouri, Columbia, MO, 65212, USA
| | - Kavita K Katti
- Department of Radiology, Institute of Green Nanotechnology, University of Missouri, Columbia, MO, 65212, USA
| | - Velaphi C Thipe
- Laboratório de Ecotoxicologia, Centro de Química e Meio Ambiente, Instituto de Pesquisas Energéticas e Nucleares (IPEN), Comissão Nacional de Energia Nuclear, IPEN/CNEN-SP, Butantã, São Paulo, SP, Brasil
| | - Amal Y Al-Yasiri
- Nuclear Science and Engineering Institute (NSEI), University of Missouri, Columbia, MO, 65211, USA
- College of Dentistry, University of Baghdad, Baghdad, Iraq
| | - Darsha K D MohanDoss
- Dhanvantari Nano Ayushadi Pvt Ltd, No. 8/34, Neelakanta Mehta Street, T. Nagar, Chennai, 600017, India
| | | | - Ademar B Lugão
- Laboratório de Ecotoxicologia, Centro de Química e Meio Ambiente, Instituto de Pesquisas Energéticas e Nucleares (IPEN), Comissão Nacional de Energia Nuclear, IPEN/CNEN-SP, Butantã, São Paulo, SP, Brasil
| | - Chetan P Hans
- Department of Medicine-Cardiology, University of Missouri, Columbia, MO, 65212, USA
| | - Kattesh V Katti
- Department of Radiology, Institute of Green Nanotechnology, University of Missouri, Columbia, MO, 65212, USA.
- Department of Physics, University of Missouri, Columbia, MO, 65212, USA.
- University of Missouri Research Reactor (MURR), University of Missouri, Columbia, MO, 65212, USA.
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8
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Manrique-Acevedo C, Padilla J, Naz H, Woodford ML, Ghiarone T, Aroor AR, Hulse JL, Cabral-Amador FJ, Martinez-Diaz V, Hans CP, Whaley-Connell A, Martinez-Lemus LA, Lastra G. Mineralocorticoid Receptor in Myeloid Cells Mediates Angiotensin II-Induced Vascular Dysfunction in Female Mice. Front Physiol 2021; 12:588358. [PMID: 33854438 PMCID: PMC8039313 DOI: 10.3389/fphys.2021.588358] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 07/28/2020] [Accepted: 02/17/2021] [Indexed: 11/13/2022] Open
Abstract
Enhanced mineralocorticoid receptor (MR) signaling is critical to the development of endothelial dysfunction and arterial stiffening. However, there is a lack of knowledge about the role of MR-induced adipose tissue inflammation in the genesis of vascular dysfunction in women. In this study, we hypothesize that MR activation in myeloid cells contributes to angiotensin II (Ang II)-induced aortic stiffening and endothelial dysfunction in females via increased pro-inflammatory (M1) macrophage polarization. Female mice lacking MR in myeloid cells (MyMRKO) were infused with Ang II (500 ng/kg/min) for 4 weeks. This was followed by determinations of aortic stiffness and vasomotor responses, as well as measurements of markers of inflammation and macrophage infiltration/polarization in different adipose tissue compartments. MyMRKO mice were protected against Ang II-induced aortic endothelial stiffening, as assessed via atomic force microscopy in aortic explants, and vasorelaxation dysfunction, as measured by aortic wire myography. In alignment, MyMRKO mice were protected against Ang II-induced macrophage infiltration and M1 polarization in visceral adipose tissue (VAT) and thoracic perivascular adipose tissue (tPVAT). Collectively, this study demonstrates a critical role of MR activation in myeloid cells in the pathogenesis of vascular dysfunction in females associated with pro-inflammatory macrophage polarization in VAT and tPVAT. Our data have potential clinical implications for the prevention and management of cardiovascular disease in women, who are disproportionally at higher risk for poor outcomes.
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Affiliation(s)
- Camila Manrique-Acevedo
- Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri, Columbia, MO, United States.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, United States.,Research Service, Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, United States
| | - Jaume Padilla
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, United States.,Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
| | - Huma Naz
- Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri, Columbia, MO, United States.,Research Service, Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, United States
| | - Makenzie L Woodford
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, United States.,Department of Nutrition and Exercise Physiology, University of Missouri, Columbia, MO, United States
| | - Thaysa Ghiarone
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, United States
| | - Annayya R Aroor
- Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri, Columbia, MO, United States.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, United States
| | - Jack L Hulse
- Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri, Columbia, MO, United States
| | | | - Vanesa Martinez-Diaz
- Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri, Columbia, MO, United States
| | - Chetan P Hans
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, United States.,Division of Cardiovascular Medicine, Department of Medicine, University of Missouri, Columbia, MO, United States
| | - Adam Whaley-Connell
- Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri, Columbia, MO, United States.,Research Service, Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, United States.,Division of Nephrology and Hypertension, Department of Medicine, University of Missouri, Columbia, MO, United States
| | - Luis A Martinez-Lemus
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, United States.,Department of Biomedical, Biological and Chemical Engineering, University of Missouri, Columbia, MO, United States.,Department of Medical Pharmacology and Physiology, University of Missouri, Columbia, MO, United States
| | - Guido Lastra
- Division of Endocrinology and Metabolism, Department of Medicine, University of Missouri, Columbia, MO, United States.,Research Service, Harry S. Truman Memorial Veterans' Hospital, Columbia, MO, United States
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9
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Abstract
Background Development of abdominal aortic aneurysm (AAA) is associated with proinflammatory cytokines including interleukin-12 (IL12). Deficiency of interleukin 12p40 (IL12p40) increases localized fibrotic events by promoting TGFβ2 (transforming growth factor β)-dependent anti-inflammatory response. Here, we determined whether IL12p40 deficiency in apolipoprotein E-/- mice attenuates the development of AAA by antagonizing proinflammatory response. Methods and Results Double knockout (DKO) mice were generated by crossbreeding IL12p40-/- mice with apolipoprotein E-/- mice (n=12). Aneurysmal studies were performed using angiotensin II (1 µg/kg/min; subcutaneous). Surprisingly, DKO mice did not prevent the development of AAA with angiotensin II infusion. Immunohistological analysis, however, showed distinct pathological features between apolipoprotein E-/- and DKO mice. Polymerase chain reaction (7 day) and cytokine arrays (28 day) of the aortic tissues from DKO mice showed significantly increased expression of cytokines related to anti-inflammatory response (interleukin 5 and interleukin 13), synthetic vascular smooth muscle cell phenotype (Activin receptor-like kinase-1 (ALK-1), artemin, and betacellulin) and T helper 17-associated response (4-1BB, interleukin-17e (Il17e) and Cd40 ligand (Cd-40L)). Indeed, DKO mice exhibited increased expression of the fibro-proteolytic pathway in the medial layer of aortae induced by cellular communication network factor 2 (CCN2) and Cd3+IL17+ cells compared with apolipoprotein E-/- mice. Laser capture microdissection showed predominant expression of CCN2/TGFβ2 in the medial layer of human AAA. Finally, Ccn2 haploinsufficiency in the mice showed decreased AAA incidence in response to elastase infusion, associated with decreased matrix metalloproteinase-2 expression. Conclusions Our study reveals novel roles for IL12p40 deficiency in inducing fibro-proteolytic activities in the aneurysmal mouse model. Mechanistically, these effects of IL12p40 deficiency are mediated by CCN2/matrix metalloproteinase-2 crosstalk in the medial layer of aneurysmal aortae.
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MESH Headings
- Aged
- Animals
- Aorta, Abdominal/diagnostic imaging
- Aorta, Abdominal/metabolism
- Aorta, Abdominal/physiopathology
- Aortic Aneurysm, Abdominal/etiology
- Aortic Aneurysm, Abdominal/genetics
- Aortic Aneurysm, Abdominal/metabolism
- Blotting, Western
- Cells, Cultured
- Connective Tissue Growth Factor/biosynthesis
- Connective Tissue Growth Factor/genetics
- Disease Models, Animal
- Electrocardiography
- Female
- Gene Expression Regulation
- Humans
- Interleukin-12 Subunit p40/blood
- Interleukin-12 Subunit p40/deficiency
- Male
- Matrix Metalloproteinase 2/biosynthesis
- Matrix Metalloproteinase 2/genetics
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Middle Aged
- RNA/genetics
- T-Lymphocytes/metabolism
- T-Lymphocytes/pathology
- Ultrasonography
- Vascular Stiffness/physiology
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Affiliation(s)
- Neekun Sharma
- Department of Cardiovascular MedicineUniversity of MissouriColumbiaMO
- Dalton Cardiovascular Research CenterUniversity of MissouriColumbiaMO
| | - Chetan P. Hans
- Department of Cardiovascular MedicineUniversity of MissouriColumbiaMO
- Dalton Cardiovascular Research CenterUniversity of MissouriColumbiaMO
- Department of Medical Pharmacology and PhysiologyUniversity of MissouriColumbiaMO
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10
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Jones B, Tonniges JR, Debski A, Albert B, Yeung DA, Gadde N, Mahajan A, Sharma N, Calomeni EP, Go MR, Hans CP, Agarwal G. Collagen fibril abnormalities in human and mice abdominal aortic aneurysm. Acta Biomater 2020; 110:129-140. [PMID: 32339711 DOI: 10.1016/j.actbio.2020.04.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [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: 12/01/2019] [Revised: 03/27/2020] [Accepted: 04/10/2020] [Indexed: 12/19/2022]
Abstract
Vascular diseases like abdominal aortic aneurysms (AAA) are characterized by a drastic remodeling of the vessel wall, accompanied with changes in the elastin and collagen content. At the macromolecular level, the elastin fibers in AAA have been reported to undergo significant structural alterations. While the undulations (waviness) of the collagen fibers is also reduced in AAA, very little is understood about changes in the collagen fibril at the sub-fiber level in AAA as well as in other vascular pathologies. In this study we investigated structural changes in collagen fibrils in human AAA tissue extracted at the time of vascular surgery and in aorta extracted from angiotensin II (AngII) infused ApoE-/- mouse model of AAA. Collagen fibril structure was examined using transmission electron microscopy and atomic force microscopy. Images were analyzed to ascertain length and depth of D-periodicity, fibril diameter and fibril curvature. Abnormal collagen fibrils with compromised D-periodic banding were observed in the excised human tissue and in remodeled regions of AAA in AngII infused mice. These abnormal fibrils were characterized by statistically significant reduction in depths of D-periods and an increased curvature of collagen fibrils. These features were more pronounced in human AAA as compared to murine samples. Thoracic aorta from Ang II-infused mice, abdominal aorta from saline-infused mice, and abdominal aorta from non-AAA human controls did not contain abnormal collagen fibrils. The structural alterations in abnormal collagen fibrils appear similar to those reported for collagen fibrils subjected to mechanical overload or chronic inflammation in other tissues. Detection of abnormal collagen could be utilized to better understand the functional properties of the underlying extracellular matrix in vascular as well as other pathologies. STATEMENT OF SIGNIFICANCE: Several vascular diseases including abdominal aortic aneurysm (AAA) are characterized by extensive remodeling in the vessel wall. Although structural alterations in elastin fibers are well characterized in vascular diseases, very little is known about the collagen fibril structure in these diseases. We report here a comprehensive ultrastructural evaluation of the collagen fibrils in AAA, using high-resolution microscopy techniques like transmission electron microscopy (TEM) and atomic force microscopy (AFM). We elucidate how abnormal collagen fibrils with compromised D-periodicity and increased fibril curvature are present in the vascular tissue in both clinical AAA as well as in murine models. We discuss how these abnormal collagen fibrils are likely a consequence of mechanical overload accompanying AAA and could impact the functional properties of the underlying tissue.
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Affiliation(s)
- Blain Jones
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - Jeffrey R Tonniges
- Biophysics Graduate Program, The Ohio State University, Columbus, OH, USA
| | - Anna Debski
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - Benjamin Albert
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - David A Yeung
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - Nikhit Gadde
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA
| | - Advitiya Mahajan
- Center for Cardiovascular Research, Nationwide Children's Hospital, Columbus, OH, USA; Department of Cardiovascular Medicine, Dalton Cardiovascular Research Center, and Medical Pharmacology and Physiology Columbia, University of Missouri, USA
| | - Neekun Sharma
- Department of Cardiovascular Medicine, Dalton Cardiovascular Research Center, and Medical Pharmacology and Physiology Columbia, University of Missouri, USA
| | - Edward P Calomeni
- Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Michael R Go
- Division of Vascular Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Chetan P Hans
- Center for Cardiovascular Research, Nationwide Children's Hospital, Columbus, OH, USA; Department of Cardiovascular Medicine, Dalton Cardiovascular Research Center, and Medical Pharmacology and Physiology Columbia, University of Missouri, USA.
| | - Gunjan Agarwal
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH, USA; Biophysics Graduate Program, The Ohio State University, Columbus, OH, USA.
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11
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Sharma N, Belenchia AM, Toedebusch R, Pulakat L, Hans CP. AT2R agonist NP-6A4 mitigates aortic stiffness and proteolytic activity in mouse model of aneurysm. J Cell Mol Med 2020; 24:7393-7404. [PMID: 32420690 PMCID: PMC7339180 DOI: 10.1111/jcmm.15342] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 11/25/2019] [Revised: 03/16/2020] [Accepted: 03/26/2020] [Indexed: 12/12/2022] Open
Abstract
Clinical and experimental studies show that angiotensin II (AngII) promotes vascular pathology via activation of AngII type 1 receptors (AT1Rs). We recently reported that NP-6A4, a selective peptide agonist for AngII type 2 receptor (AT2R), exerts protective effects on human vascular cells subjected to serum starvation or doxorubicin exposure. In this study, we investigated whether NP-6A4-induced AT2R activation could mitigate AngII-induced abdominal aortic aneurism (AAA) using AngII-treated Apoe-/- mice. Male Apoe-/- mice were infused with AngII (1 µg/kg/min) by implanting osmotic pumps subcutaneously for 28 days. A subset of mice was pre-treated subcutaneously with NP-6A4 (2.5 mg/kg/day) or vehicle for 14 days prior to AngII, and treatments were continued for 28 days. NP-6A4 significantly reduced aortic stiffness of the abdominal aorta induced by AngII as determined by ultrasound functional analyses and histochemical analyses. NP-6A4 also increased nitric oxide bioavailability in aortic tissues and suppressed AngII-induced increases in monocyte chemotactic protein-1, osteopontin and proteolytic activity of the aorta. However, NP-6A4 did not affect maximal intraluminal aortic diameter or AAA incidences significantly. These data suggest that the effects of AT2R agonist on vascular pathologies are selective, affecting the aortic stiffness and proteolytic activity without affecting the size of AAA.
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Affiliation(s)
- Neekun Sharma
- Department of Cardiovascular Medicine, University of Missouri, Columbia, MO, USA.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA
| | - Anthony M Belenchia
- Department of Cardiovascular Medicine, University of Missouri, Columbia, MO, USA.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA
| | - Ryan Toedebusch
- Department of Cardiovascular Medicine, University of Missouri, Columbia, MO, USA.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA
| | - Lakshmi Pulakat
- Department of Cardiovascular Medicine, University of Missouri, Columbia, MO, USA.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA.,Medical Pharmacology and Physiology, University of Missouri, Columbia, MO, USA.,Molecular Cardiology Research Institute, Department of Medicine, Tufts Medical Center, Tufts University School of Medicine, Boston, MA, USA
| | - Chetan P Hans
- Department of Cardiovascular Medicine, University of Missouri, Columbia, MO, USA.,Dalton Cardiovascular Research Center, University of Missouri, Columbia, MO, USA.,Medical Pharmacology and Physiology, University of Missouri, Columbia, MO, USA
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12
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Sharma N, Sun Z, Hill MA, Hans CP. Measurement of Pulse Propagation Velocity, Distensibility and Strain in an Abdominal Aortic Aneurysm Mouse Model. J Vis Exp 2020:10.3791/60515. [PMID: 32150160 PMCID: PMC7890464 DOI: 10.3791/60515] [Citation(s) in RCA: 4] [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] [Indexed: 01/14/2023] Open
Abstract
An abdominal aortic aneurysm (AAA) is defined as a localized dilation of the abdominal aorta that exceeds the maximal intraluminal diameter (MILD) by 1.5 times of its original size. Clinical and experimental studies have shown that small aneurysms may rupture, while a subpopulation of large aneurysms may remain stable. Thus, in addition to the measurement of intraluminal diameter of the aorta, knowledge of structural traits of the vessel wall may provide important information to assess the stability of the AAA. Aortic stiffening has recently emerged as a reliable tool to determine early changes in the vascular wall. Pulse propagation velocity (PPV) along with the distensibility and radial strain are highly useful ultrasound-based methods relevant for assessing aortic stiffness. The primary purpose of this protocol is to provide a comprehensive technique for the use of ultrasound imaging system to acquire images and analyze the structural and functional properties of the aorta as determined by MILD, PPV, distensibility and radial strain.
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Affiliation(s)
- Neekun Sharma
- Division of Cardiovascular Medicine, University of Missouri; Dalton Cardiovascular Research Center, University of Missouri
| | - Zhe Sun
- Medical Pharmacology and Physiology, University of Missouri; Dalton Cardiovascular Research Center, University of Missouri
| | - Michael A Hill
- Division of Cardiovascular Medicine, University of Missouri; Medical Pharmacology and Physiology, University of Missouri; Dalton Cardiovascular Research Center, University of Missouri
| | - Chetan P Hans
- Division of Cardiovascular Medicine, University of Missouri; Medical Pharmacology and Physiology, University of Missouri; Dalton Cardiovascular Research Center, University of Missouri;
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13
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Sharma N, Dev R, Belenchia AM, Aroor AR, Whaley-Connell A, Pulakat L, Hans CP. Deficiency of IL12p40 (Interleukin 12 p40) Promotes Ang II (Angiotensin II)-Induced Abdominal Aortic Aneurysm. Arterioscler Thromb Vasc Biol 2019; 39:212-223. [PMID: 30580570 DOI: 10.1161/atvbaha.118.311969] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Objective- Abdominal aortic aneurysm is caused by the accumulation of inflammatory cells in the aortic wall. Our recent studies demonstrated that inhibition of Notch signaling attenuates abdominal aortic aneurysm formation by shifting the macrophage balance towards anti-inflammatory (M2) phenotype. Using IL12p40-/- (interleukin 12 p40) mice, we investigated the effects of M2-predominant macrophages on the development of abdominal aortic aneurysm. Approach and Results- Male (8-10 week-old) wild-type and IL12p40-/- mice (n=15) on C57BL/6 background were infused with Ang II (angiotensin II, 1000 ng/kg per minute) by implanting osmotic pumps subcutaneously for 28 days. In the IL12p40-/- mice, Ang II significantly increased the maximal intraluminal diameter (9/15) as determined by transabdominal ultrasound imaging. In addition, IL12p40-deletion significantly increased aortic stiffness in response to Ang II as measured by pulse wave velocity and atomic force microscopy. Histologically, IL12p40-/- mice exhibited increased maximal external diameter of aorta and aortic lesions associated with collagen deposition and increased elastin fragmentation compared with wild-type mice infused with Ang II. Mechanistically, IL12p40 deficiency by siRNA (small interfering RNA) augmented the Tgfβ2-mediated Mmp2 expression in wild-type bone marrow-derived macrophages without affecting the expression of Mmp9. No such effects of IL12p40 deficiency on MMP2/MMP9 was observed in human aortic smooth muscle cells or fibroblasts. Depletion of macrophages in IL12p40-/- mice by clodronate liposomes significantly decreased the maximal external diameter of aorta and aortic stiffness in response to Ang II as determined by imaging and atomic force microscopy. Conclusions- IL12p40 depletion promotes the development of abdominal aortic aneurysm, in part, by facilitating recruitment of M2-like macrophages and potentiating aortic stiffness and fibrosis mediated by Tgfβ2.
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Affiliation(s)
- Neekun Sharma
- From the Department of Cardiovascular Medicine (N.S., R.D., A.M.B., L.P., C.P.H.), University of Missouri, Columbia.,Dalton Cardiovascular Research Center (N.S., R.D., A.M.B., L.P., C.P.H.), University of Missouri, Columbia
| | - Rishabh Dev
- From the Department of Cardiovascular Medicine (N.S., R.D., A.M.B., L.P., C.P.H.), University of Missouri, Columbia.,Dalton Cardiovascular Research Center (N.S., R.D., A.M.B., L.P., C.P.H.), University of Missouri, Columbia
| | - Anthony M Belenchia
- From the Department of Cardiovascular Medicine (N.S., R.D., A.M.B., L.P., C.P.H.), University of Missouri, Columbia.,Dalton Cardiovascular Research Center (N.S., R.D., A.M.B., L.P., C.P.H.), University of Missouri, Columbia
| | - Annayya R Aroor
- Department of Medical Pharmacology and Physiology (A.R.A., C.P.H.), University of Missouri, Columbia
| | - Adam Whaley-Connell
- Harry S. Truman Memorial Veterans' Hospital (A.W.-C.), University of Missouri, Columbia
| | - Lakshmi Pulakat
- From the Department of Cardiovascular Medicine (N.S., R.D., A.M.B., L.P., C.P.H.), University of Missouri, Columbia.,Dalton Cardiovascular Research Center (N.S., R.D., A.M.B., L.P., C.P.H.), University of Missouri, Columbia
| | - Chetan P Hans
- From the Department of Cardiovascular Medicine (N.S., R.D., A.M.B., L.P., C.P.H.), University of Missouri, Columbia.,Department of Medical Pharmacology and Physiology (A.R.A., C.P.H.), University of Missouri, Columbia.,Dalton Cardiovascular Research Center (N.S., R.D., A.M.B., L.P., C.P.H.), University of Missouri, Columbia
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14
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Sharma N, Dev R, Ruiz-Rosado JDD, Partida-Sanchez S, Guerau-de-Arellano M, Dhakal P, Kuivaniemi H, Hans CP. Pharmacological inhibition of Notch signaling regresses pre-established abdominal aortic aneurysm. Sci Rep 2019; 9:13458. [PMID: 31530833 PMCID: PMC6748927 DOI: 10.1038/s41598-019-49682-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [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: 05/01/2019] [Accepted: 08/27/2019] [Indexed: 12/22/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is characterized by transmural infiltration of myeloid cells at the vascular injury site. Previously, we reported preventive effects of Notch deficiency on the development of AAA by reduction of infiltrating myeloid cells. In this study, we examined if Notch inhibition attenuates the progression of pre-established AAA and potential implications. Pharmacological Notch inhibitor (N-[N-(3,5-difluorophenacetyl)-L-alanyl]-(S)-phenylglycine t-butyl ester; DAPT) was administered subcutaneously three times a week starting at day 28 of angiotensin II (AngII) infusion. Progressive increase in pulse wave velocity (PWV), maximal intra-luminal diameter (MILD) and maximal external aortic diameter (MEAD) were observed at day 56 of the AngII. DAPT prevented such increase in MILD, PWV and MEAD (P < 0.01). Histologically, the aortae of DAPT-treated Apoe-/- mice had significant reduction in inflammatory response and elastin fragmentation. Naked collagen microfibrils and weaker banded structure observed in the aortae of Apoe-/- mice in response to AngII, were substantially diminished by DAPT. A significant decrease in the proteolytic activity in the aneurysmal tissues and vascular smooth muscle cells (vSMCs) was observed with DAPT (P < 0.01). In human and mouse AAA tissues, increased immunoreactivity of activated Notch signaling correlated strongly with CD38 expression (R2 = 0.61). Collectively, we propose inhibition of Notch signaling as a potential therapeutic target for AAA progression.
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MESH Headings
- ADP-ribosyl Cyclase 1/metabolism
- Angiotensin II/adverse effects
- Animals
- Aorta/drug effects
- Aorta/metabolism
- Aortic Aneurysm, Abdominal/chemically induced
- Aortic Aneurysm, Abdominal/diagnostic imaging
- Aortic Aneurysm, Abdominal/drug therapy
- Aortic Aneurysm, Abdominal/metabolism
- Cells, Cultured
- Collagen/metabolism
- Cytokines/metabolism
- Dipeptides/pharmacology
- Disease Models, Animal
- Extracellular Matrix/drug effects
- Extracellular Matrix/metabolism
- Gene Expression Regulation/drug effects
- Humans
- Male
- Membrane Glycoproteins/metabolism
- Mice
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Receptors, Notch/antagonists & inhibitors
- Receptors, Notch/metabolism
- Signal Transduction/drug effects
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Affiliation(s)
- Neekun Sharma
- Department of Cardiovascular Medicine, University of Missouri, Columbia, USA
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, USA
| | - Rishabh Dev
- Department of Cardiovascular Medicine, University of Missouri, Columbia, USA
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, USA
| | - Juan de Dios Ruiz-Rosado
- Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Santiago Partida-Sanchez
- Center for Microbial Pathogenesis, The Research Institute at Nationwide Children's Hospital, Columbus, OH, USA
| | - Mireia Guerau-de-Arellano
- School of Health and Rehabilitation Sciences, Medical Laboratory Science Division, The Ohio State University, Columbus, OH, USA
| | - Pramod Dhakal
- Animal Science Research Center, University of Missouri, Columbia, USA
| | - Helena Kuivaniemi
- Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Stellenbosch University, Cape Town, South Africa
| | - Chetan P Hans
- Department of Cardiovascular Medicine, University of Missouri, Columbia, USA.
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, USA.
- Medical Pharmacology and Physiology, University of Missouri, Columbia, USA.
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15
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Hans CP, Sharma N, Sen S, Zeng S, Dev R, Jiang Y, Mahajan A, Joshi T. Transcriptomics Analysis Reveals New Insights into the Roles of Notch1 Signaling on Macrophage Polarization. Sci Rep 2019; 9:7999. [PMID: 31142802 PMCID: PMC6541629 DOI: 10.1038/s41598-019-44266-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 09/27/2018] [Accepted: 01/29/2019] [Indexed: 12/24/2022] Open
Abstract
Naïve macrophages (Mφ) polarize in response to various environmental cues to a spectrum of cells that have distinct biological functions. The extreme ends of the spectrum are classified as M1 and M2 macrophages. Previously, we demonstrated that Notch1 deficiency promotes Tgf-β2 dependent M2-polarization in a mouse model of abdominal aortic aneurysm. The present studies aimed to characterize the unique set of genes regulated by Notch1 signaling in macrophage polarization. Bone marrow derived macrophages isolated from WT or Notch1+/- mice (n = 12) were differentiated to Mφ, M1 or M2-phenotypes by 24 h exposure to vehicle, LPS/IFN-γ or IL4/IL13 respectively and total RNA was subjected to RNA-Sequencing (n = 3). Bioinformatics analyses demonstrated that Notch1 haploinsufficiency downregulated the expression of 262 genes at baseline level, 307 genes with LPS/IFN-γ and 254 genes with IL4/IL13 treatment. Among these, the most unique genes downregulated by Notch1 haploinsufficiency included fibromodulin (Fmod), caspase-4, Has1, Col1a1, Alpl and Igf. Pathway analysis demonstrated that extracellular matrix, macrophage polarization and osteogenesis were the major pathways affected by Notch1 haploinsufficiency. Gain and loss-of-function studies established a strong correlation between Notch1 haploinsufficiency and Fmod in regulating Tgf-β signaling. Collectively, our studies suggest that Notch1 haploinsufficiency increases M2 polarization through these newly identified genes.
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Affiliation(s)
- Chetan P Hans
- Department of Cardiovascular Medicine, University of Missouri, Columbia, USA.
- Medical Pharmacology and Physiology, University of Missouri, Columbia, USA.
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, USA.
| | - Neekun Sharma
- Department of Cardiovascular Medicine, University of Missouri, Columbia, USA
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, USA
| | - Sidharth Sen
- MU Informatics Institute, University of Missouri, Columbia, USA
| | - Shuai Zeng
- Department of Electrical Engineering and Computer Science, University of Missouri, Columbia, USA
| | - Rishabh Dev
- Department of Cardiovascular Medicine, University of Missouri, Columbia, USA
- Dalton Cardiovascular Research Center, University of Missouri, Columbia, USA
| | - Yuexu Jiang
- Department of Electrical Engineering and Computer Science, University of Missouri, Columbia, USA
| | - Advitiya Mahajan
- Department of Cardiovascular Medicine, University of Missouri, Columbia, USA
| | - Trupti Joshi
- MU Informatics Institute, University of Missouri, Columbia, USA
- Department of Electrical Engineering and Computer Science, University of Missouri, Columbia, USA
- Department of Health Management and Informatics, School of Medicine, University of Missouri, Columbia, USA
- Christopher S. Bond Life Science Center, University of Missouri, Columbia, USA
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16
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Bosse K, Hans CP, Zhao N, Koenig SN, Huang N, Guggilam A, LaHaye S, Tao G, Lucchesi PA, Lincoln J, Lilly B, Garg V. Corrigendum to "Endothelial nitric oxide signaling regulates Notch1 in aortic valve disease" [J. Mol. Cell. Cardiol. 60 (2013) 27-35]. J Mol Cell Cardiol 2018; 121:307. [PMID: 29778253 DOI: 10.1016/j.yjmcc.2018.04.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- K Bosse
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - C P Hans
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - N Zhao
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - S N Koenig
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - N Huang
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - A Guggilam
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - S LaHaye
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - G Tao
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - P A Lucchesi
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - J Lincoln
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - B Lilly
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
| | - V Garg
- Center for Cardiovascular Research at Nationwide Children's Hospital, Columbus, OH 43205, USA.
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17
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Sachdeva J, Mahajan A, Cheng J, Baeten JT, Lilly B, Kuivaniemi H, Hans CP. Smooth muscle cell-specific Notch1 haploinsufficiency restricts the progression of abdominal aortic aneurysm by modulating CTGF expression. PLoS One 2017; 12:e0178538. [PMID: 28562688 PMCID: PMC5451061 DOI: 10.1371/journal.pone.0178538] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [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: 10/12/2016] [Accepted: 05/15/2017] [Indexed: 02/06/2023] Open
Abstract
Aims Infiltration of macrophages and apoptosis of vascular smooth muscle cells (VSMCs) promote the development of abdominal aortic aneurysm (AAA). Previously, we demonstrated that global Notch1 deficiency prevents the formation of AAA in a mouse model. Herein, we sought to explore the cell-specific roles of Notch1 in AAA development. Methods and results Cell-specific Notch1 haploinsufficient mice, generated on Apoe-/- background using Cre-lox technology, were infused with angiotensin II (1000 ng/min/kg) for 28 days. Notch1 haploinsufficiency in myeloid cells (n = 9) prevented the formation of AAA attributed to decreased inflammation. Haploinsufficiency of Notch1 in SMCs (n = 14) per se did not prevent AAA formation, but histoarchitectural traits of AAA including elastin degradation and aortic remodeling, were minimal in SMC-Notch1+/-;Apoe-/- mice compared to Apoe-/- mice (n = 33). Increased immunostaining of the contractile SMC-phenotype markers and concomitant decreased expression of synthetic SMC-phenotype markers were observed in the aortae of SMC-Notch1+/-;Apoe-/- mice. Expression of connective tissue growth factor (CTGF), a matrix-associated protein that modulates the synthetic VSMC phenotype, increased in the abdominal aorta of Apoe-/- mice and in the adventitial region of the abdominal aorta in human AAA. Notch1 haploinsufficiency decreased the expression of Ctgf in the aorta and in vitro cell culture system. In vitro studies on SMCs using the Notch1 intracellular domain (NICD) plasmid, dominant negative mastermind-like (dnMAML), or specific siRNA suggest that Notch1, not Notch3, directly modulates the expression of CTGF. Conclusions Our data suggest that lack of Notch1 in SMCs limits dilation of the abdominal aorta by maintaining contractile SMC-phenotype and preventing matrix-remodeling.
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MESH Headings
- Animals
- Aortic Aneurysm, Abdominal/metabolism
- Aortic Aneurysm, Abdominal/pathology
- Cells, Cultured
- Coculture Techniques
- Connective Tissue Growth Factor/metabolism
- Haploinsufficiency
- Matrix Metalloproteinases/biosynthesis
- Mice
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/enzymology
- Muscle, Smooth, Vascular/metabolism
- Receptor, Notch1/metabolism
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Affiliation(s)
| | - Advitiya Mahajan
- Cardiology, Medical Pharmacology & Physiology and Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, United States of America
| | - Jeeyun Cheng
- Center for Cardiovascular Research and The Heart Center, Nationwide Children's Hospital, Columbus, Ohio, United States of America
| | - Jeremy T. Baeten
- Center for Cardiovascular Research and The Heart Center, Nationwide Children's Hospital, Columbus, Ohio, United States of America
| | - Brenda Lilly
- Center for Cardiovascular Research and The Heart Center, Nationwide Children's Hospital, Columbus, Ohio, United States of America
| | - Helena Kuivaniemi
- Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Chetan P. Hans
- Ohio State University, Columbus, Ohio, United States of America
- Cardiology, Medical Pharmacology & Physiology and Dalton Cardiovascular Research Center, University of Missouri, Columbia, Missouri, United States of America
- Center for Cardiovascular Research and The Heart Center, Nationwide Children's Hospital, Columbus, Ohio, United States of America
- * E-mail:
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18
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Cheng J, Koenig SN, Kuivaniemi HS, Garg V, Hans CP. Pharmacological inhibitor of notch signaling stabilizes the progression of small abdominal aortic aneurysm in a mouse model. J Am Heart Assoc 2014; 3:e001064. [PMID: 25349182 PMCID: PMC4338693 DOI: 10.1161/jaha.114.001064] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [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: 12/11/2022]
Abstract
Background The progression of abdominal aortic aneurysm (AAA) involves a sustained influx of proinflammatory macrophages, which exacerbate tissue injury by releasing cytokines, chemokines, and matrix metalloproteinases. Previously, we showed that Notch deficiency reduces the development of AAA in the angiotensin II–induced mouse model by preventing infiltration of macrophages. Here, we examined whether Notch inhibition in this mouse model prevents progression of small AAA and whether these effects are associated with altered macrophage differentiation. Methods and Results Treatment with pharmacological Notch inhibitor (DAPT [N‐(N‐[3,5‐difluorophenacetyl]‐L‐alanyl)‐S‐phenylglycine t‐butyl ester]) at day 3 or 8 of angiotensin II infusion arrested the progression of AAA in Apoe−/− mice, as demonstrated by a decreased luminal diameter and aortic width. The abdominal aortas of Apoe−/− mice treated with DAPT showed decreased expression of matrix metalloproteinases and presence of elastin precursors including tropoelastin and hyaluronic acid. Marginal adventitial thickening observed in the aorta of DAPT‐treated Apoe−/− mice was not associated with increased macrophage content, as observed in the mice treated with angiotensin II alone. Instead, DAPT‐treated abdominal aortas showed increased expression of Cd206‐positive M2 macrophages and decreased expression of Il12‐positive M1 macrophages. Notch1 deficiency promoted M2 differentiation of macrophages by upregulating transforming growth factor β2 in bone marrow–derived macrophages at basal levels and in response to IL4. Protein expression of transforming growth factor β2 and its downstream effector pSmad2 also increased in DAPT‐treated Apoe−/− mice, indicating a potential link between Notch and transforming growth factor β2 signaling in the M2 differentiation of macrophages. Conclusions Pharmacological inhibitor of Notch signaling prevents the progression of AAA by macrophage differentiation–dependent mechanisms. The study also provides insights for novel therapeutic strategies to prevent the progression of small AAA.
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Affiliation(s)
- Jeeyun Cheng
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, OH (J.C., S.N.K., V.G., C.P.H.)
| | - Sara N Koenig
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, OH (J.C., S.N.K., V.G., C.P.H.)
| | - Helena S Kuivaniemi
- The Sigfried and Janet Weis Center for Research, Geisinger Health System, Danville, PA (H.S.K.)
| | - Vidu Garg
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, OH (J.C., S.N.K., V.G., C.P.H.) Department of Pediatrics, The Ohio State University, Columbus, OH (V.G., C.P.H.) Department of Molecular Genetics, The Ohio State University, Columbus, OH (V.G.)
| | - Chetan P Hans
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children's Hospital, The Ohio State University, Columbus, OH (J.C., S.N.K., V.G., C.P.H.) Department of Pediatrics, The Ohio State University, Columbus, OH (V.G., C.P.H.)
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19
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Abstract
RATIONALE MicroRNA miR145 has been implicated in vascular smooth muscle cell differentiation, but its mechanisms of action and downstream targets have not been fully defined. OBJECTIVE Here, we sought to explore and define the mechanisms of miR145 function in smooth muscle cells. METHODS AND RESULTS Using a combination of cell culture assays and in vivo mouse models to modulate miR145, we characterized its downstream actions on smooth muscle phenotypes. Our results show that the miR-143/145 gene cluster is induced in smooth muscle cells by coculture with endothelial cells. Endothelial cell-induced expression of miR-143/145 is augmented by Notch signaling and accordingly expression is reduced in Notch receptor-deficient cells. Screens to identify miR145-regulated genes revealed that the transforming growth factor (TGF)-β pathway has a significantly high number of putative target genes, and we show that TGFβ receptor II is a direct target of miR145. Extracellular matrix genes that are regulated by TGFβ receptor II were attenuated by miR145 overexpression, and miR145 mutant mice exhibit an increase in extracellular matrix synthesis. Furthermore, activation of TGFβ signaling via angiotensin II infusion revealed a pronounced fibrotic response in the absence of miR145. CONCLUSIONS These data demonstrate a specific role for miR145 in the regulation of matrix gene expression in smooth muscle cells and suggest that miR145 acts to suppress TGFβ-dependent extracellular matrix accumulation and fibrosis, while promoting TGFβ-induced smooth muscle cell differentiation. Our findings offer evidence to explain how TGFβ signaling exhibits distinct downstream actions via its regulation by a specific microRNA.
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Affiliation(s)
- Ning Zhao
- From the Center for Cardiovascular and Pulmonary Research and Heart Center, Nationwide Children's Hospital, Department of Pediatrics, The Ohio State University, Columbus
| | - Sara N Koenig
- From the Center for Cardiovascular and Pulmonary Research and Heart Center, Nationwide Children's Hospital, Department of Pediatrics, The Ohio State University, Columbus
| | - Aaron J Trask
- From the Center for Cardiovascular and Pulmonary Research and Heart Center, Nationwide Children's Hospital, Department of Pediatrics, The Ohio State University, Columbus
| | - Cho-Hao Lin
- From the Center for Cardiovascular and Pulmonary Research and Heart Center, Nationwide Children's Hospital, Department of Pediatrics, The Ohio State University, Columbus
| | - Chetan P Hans
- From the Center for Cardiovascular and Pulmonary Research and Heart Center, Nationwide Children's Hospital, Department of Pediatrics, The Ohio State University, Columbus
| | - Vidu Garg
- From the Center for Cardiovascular and Pulmonary Research and Heart Center, Nationwide Children's Hospital, Department of Pediatrics, The Ohio State University, Columbus
| | - Brenda Lilly
- From the Center for Cardiovascular and Pulmonary Research and Heart Center, Nationwide Children's Hospital, Department of Pediatrics, The Ohio State University, Columbus.
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20
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Cheng J, Koening S, Kuivaniemi H, Garg V, Hans CP. Abstract 292: Notch Inhibition Stabilizes the Progression of Small Abdominal Aortic Aneurysm in a Mouse Model. Arterioscler Thromb Vasc Biol 2014. [DOI: 10.1161/atvb.34.suppl_1.292] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The progression of abdominal aortic aneurysm (AAA) involves a sustained influx of proinflammatory macrophages, which exacerbate tissue injury by releasing cytokines, chemokines and matrix metalloproteinases (MMPs). While multiple factors are involved in disease pathogenesis, the critical stimulus is the differentiation and infiltration of naïve macrophages (Mϕ) towards classical (M1) activation. In contrast, Mϕ can also be programmed to M2-macrophages which inhibit the inflammatory response and promote tissue repair. Previously, we showed that Notch deficiency reduces the development of AAA in the angiotensin II (AngII)-induced mouse model by preventing infiltration of Mϕ. Because of its regulatory roles in macrophage differentiation, we examined if Notch inhibition in a mouse model prevents progression of small AAA and if these effects are associated with Mϕ-differentiation.
Notch inhibition (DAPT) started at day 3 or 8 of AngII infusion arrested the progression of AAA in
Apoe
-/-
mice as demonstrated by a decreased luminal diameter and aortic width. The abdominal aortae treated with DAPT showed decreased MMPs expression and presence of elastin precursors including tropoelastin. Marginal adventitial thickening observed in DAPT-treated
Apoe
-/-
mice was not associated with increased total macrophage content. Instead, DAPT-treated abdominal aortae showed increased expression of Cd206 positive M2-macrophages and decreased expression of Il12 positive M1-macrophages. Increased expression of IL12 positive M1 macrophages and its strong correlation with active Notch1 signaling (NICD) was also observed in the infrarenal aortae from AAA patients.
Notch1
deficiency promoted M2-differentiation of Mϕ by upregulating transforming growth factor (
Tgf)-β2
expression in bone marrow-derived Mϕ at basal levels and in response to IL4. Protein expression of Tgf-β2 and its downstream pSmad2 also increased in DAPT-treated
Apoe
-/-
mice, indicating a potential link between Notch and Tgf-β2 signaling in the M2-differentiation of Mϕ.
Overall, Notch inhibition stabilizes the progression of AAA by macrophage-differentiation-dependent mechanisms and provides insights for novel therapeutic strategies to prevent the progression of small AAA.
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Affiliation(s)
- Jeeyun Cheng
- Cntr for Cardiovascular and Pulmonary center, Nationwide Children's Hosp, Columbus, OH
| | - Sara Koening
- Cntr for Cardiovascular and Pulmonary center, Nationwide Children's Hosp, Columbus, OH
| | - Helena Kuivaniemi
- The Sigfried and Janet Weis Cntr for Rsch, Geisinger Clinic, Danville, PA
| | - Vidu Garg
- Cntr for Cardiovascular and Pulmonary center, Nationwide Children's Hosp, Columbus, OH
| | - Chetan P Hans
- Cntr for Cardiovascular and Pulmonary center, Nationwide Children's Hosp, Columbus, OH
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21
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Bosse K, Hans CP, Zhao N, Koenig SN, Huang N, Guggilam A, LaHaye S, Tao G, Lucchesi PA, Lincoln J, Lilly B, Garg V. Endothelial nitric oxide signaling regulates Notch1 in aortic valve disease. J Mol Cell Cardiol 2013; 60:27-35. [PMID: 23583836 DOI: 10.1016/j.yjmcc.2013.04.001] [Citation(s) in RCA: 117] [Impact Index Per Article: 10.6] [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] [Received: 10/17/2012] [Revised: 03/14/2013] [Accepted: 04/03/2013] [Indexed: 01/22/2023]
Abstract
The mature aortic valve is composed of a structured trilaminar extracellular matrix that is interspersed with aortic valve interstitial cells (AVICs) and covered by endothelium. Dysfunction of the valvular endothelium initiates calcification of neighboring AVICs leading to calcific aortic valve disease (CAVD). The molecular mechanism by which endothelial cells communicate with AVICs and cause disease is not well understood. Using a co-culture assay, we show that endothelial cells secrete a signal to inhibit calcification of AVICs. Gain or loss of nitric oxide (NO) prevents or accelerates calcification of AVICs, respectively, suggesting that the endothelial cell-derived signal is NO. Overexpression of Notch1, which is genetically linked to human CAVD, retards the calcification of AVICs that occurs with NO inhibition. In AVICs, NO regulates the expression of Hey1, a downstream target of Notch1, and alters nuclear localization of Notch1 intracellular domain. Finally, Notch1 and NOS3 (endothelial NO synthase) display an in vivo genetic interaction critical for proper valve morphogenesis and the development of aortic valve disease. Our data suggests that endothelial cell-derived NO is a regulator of Notch1 signaling in AVICs in the development of the aortic valve and adult aortic valve disease.
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Affiliation(s)
- Kevin Bosse
- Center for Cardiovascular and Pulmonary Research at Nationwide Children's Hospital, Columbus, OH 43205, USA
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22
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Hans CP, Koenig SN, Huang N, Cheng J, Beceiro S, Guggilam A, Kuivaniemi H, Partida-Sánchez S, Garg V. Inhibition of Notch1 signaling reduces abdominal aortic aneurysm in mice by attenuating macrophage-mediated inflammation. Arterioscler Thromb Vasc Biol 2012; 32:3012-23. [PMID: 23087364 DOI: 10.1161/atvbaha.112.254219] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE Activation of inflammatory pathways plays a critical role in the development of abdominal aortic aneurysms (AAA). Notch1 signaling is a significant regulator of the inflammatory response; however, its role in AAA is unknown. METHODS AND RESULTS In an angiotensin II-induced mouse model of AAA, activation of Notch1 signaling was observed in the aortic aneurysmal tissue of Apoe(-/-) mice, and a similar activation of Notch1 was observed in aneurysms of humans undergoing AAA repair. Notch1 haploinsufficiency significantly reduced the incidence of AAA in Apoe(-/-) mice in response to angiotensin II. Reconstitution of bone marrow-derived cells from Notch1(+/-);Apoe(-/-) mice (donor) in lethally irradiated Apoe(-/-) mice (recipient) decreased the occurrence of aneurysm. Flow cytometry and immunohistochemistry demonstrated that Notch1 haploinsufficiency prevented the influx of inflammatory macrophages at the aneurysmal site by causing defects in macrophage migration and proliferation. In addition, there was an overall reduction in the inflammatory burden in the aorta of the Notch1(+/-);Apoe(-/-) mice compared with the Apoe(-/-) mice. Last, pharmacological inhibition of Notch1 signaling also prevented AAA formation and progression in Apoe(-/-) mice. CONCLUSIONS Our data suggest that decreased levels of Notch1 protect against the formation of AAA by preventing macrophage recruitment and attenuating the inflammatory response in the aorta.
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Affiliation(s)
- Chetan P Hans
- Center for Cardiovascular and Pulmonary Research and The Heart Center, Nationwide Children’s Hospital, Columbus, OH 43205, USA.
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23
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Hans CP, Acharya A, Koenig SN, Nichols HA, Galindo CL, Garner HR, Merrill WH, Hinton RB, Garg V. Abstract P098: Inhibitory Role of
Notch1
in Calcific Aortic Valve Disease Is Mediated by Sox9. Circ Res 2011. [DOI: 10.1161/res.109.suppl_1.ap098] [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
Introduction:
Aortic valve calcification is the most common form of valvular heart disease; however the mechanism(s) underlying calcific aortic valve disease (CAVD) are unknown.
NOTCH1
mutations are associated with aortic valve malformations and adult-onset calcification in families with inherited disease. The Notch signaling pathway is critical for multiple cell differentiation processes, but its role in the development of CAVD is not well understood.
Objective:
To investigate the molecular changes associated with the calcification of aortic valve that occurs with inhibition of Notch signaling.
Methods and Results:
The expression of Notch signaling pathway members was validated in the aortic valve cusps from adult mice, and examination of diseased human aortic valves revealed decreased expression of NOTCH1 in areas of calcium deposition. To identify downstream mediators of Notch1 signaling, we examined gene expression changes that occur with chemical inhibition of Notch signaling in rat aortic valve interstitial cells (AVICs). We found significant downregulation of many cartilage-specific genes that constitute the valve extracellular matrix (ECM). Analysis of these cartilage-specific genes demonstrated that several were transcriptional targets of Sox9, a master regulator of chondrogenesis, which has been previously shown to be essential for proper valve development and maintenance. Utilizing an
in vitro
porcine aortic valve calcification model system, inhibition of Notch activity resulted in accelerated calcification while stimulation of Notch signaling attenuated the calcific process. Finally, utilizing transfection studies, addition of Sox9 was able to prevent the calcification of porcine AVICs that occurs with Notch inhibition.
Conclusions:
Loss of Notch signaling contributes to aortic valve calcification by a Sox9-dependent mechanism. Further elucidation of the Notch1-Sox9 molecular pathway and its role in the maintenance of the ECM will lead to an improved mechanistic understanding of aortic valve calcification and development of novel therapeutic strategies for CAVD.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Vidu Garg
- Nationwide Children's Hosp, Columbus, OH
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24
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Acharya A, Hans CP, Koenig SN, Nichols HA, Galindo CL, Garner HR, Merrill WH, Hinton RB, Garg V. Inhibitory role of Notch1 in calcific aortic valve disease. PLoS One 2011; 6:e27743. [PMID: 22110751 PMCID: PMC3218038 DOI: 10.1371/journal.pone.0027743] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.8] [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: 07/13/2011] [Accepted: 10/24/2011] [Indexed: 01/09/2023] Open
Abstract
Aortic valve calcification is the most common form of valvular heart disease, but the mechanisms of calcific aortic valve disease (CAVD) are unknown. NOTCH1 mutations are associated with aortic valve malformations and adult-onset calcification in families with inherited disease. The Notch signaling pathway is critical for multiple cell differentiation processes, but its role in the development of CAVD is not well understood. The aim of this study was to investigate the molecular changes that occur with inhibition of Notch signaling in the aortic valve. Notch signaling pathway members are expressed in adult aortic valve cusps, and examination of diseased human aortic valves revealed decreased expression of NOTCH1 in areas of calcium deposition. To identify downstream mediators of Notch1, we examined gene expression changes that occur with chemical inhibition of Notch signaling in rat aortic valve interstitial cells (AVICs). We found significant downregulation of Sox9 along with several cartilage-specific genes that were direct targets of the transcription factor, Sox9. Loss of Sox9 expression has been published to be associated with aortic valve calcification. Utilizing an in vitro porcine aortic valve calcification model system, inhibition of Notch activity resulted in accelerated calcification while stimulation of Notch signaling attenuated the calcific process. Finally, the addition of Sox9 was able to prevent the calcification of porcine AVICs that occurs with Notch inhibition. In conclusion, loss of Notch signaling contributes to aortic valve calcification via a Sox9-dependent mechanism.
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Affiliation(s)
- Asha Acharya
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
- Department of Molecular Biology, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Chetan P. Hans
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital and Department of Pediatrics, The Ohio State University, Columbus, Ohio United States of America
| | - Sara N. Koenig
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital and Department of Pediatrics, The Ohio State University, Columbus, Ohio United States of America
| | - Haley A. Nichols
- Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Cristi L. Galindo
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas, United States of America
| | - Harold R. Garner
- Virginia Bioinformatics Institute, Virginia Tech Blacksburg, Blacksburg, Virginia, United States of America
| | - Walter H. Merrill
- Division of Cardiothoracic Surgery, University of Cincinnati, Cincinnati, Ohio, United States of America
| | - Robert B. Hinton
- Division of Cardiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, United States of America
| | - Vidu Garg
- Center for Cardiovascular and Pulmonary Research and the Heart Center, Nationwide Children's Hospital and Department of Pediatrics, The Ohio State University, Columbus, Ohio United States of America
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25
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Abstract
OBJECTIVE Several clinical studies have shown the benefits of renin-angiotensin system (RAS) blockade in the development of diabetes, and a local RAS has been identified in pancreatic islets. Angiotensin I-converting enzyme (ACE)2, a new component of the RAS, has been identified in the pancreas, but its role in β-cell function remains unknown. Using 8- and 16-week-old obese db/db mice, we examined the ability of ACE2 to alter pancreatic β-cell function and thereby modulate hyperglycemia. RESEARCH DESIGN AND METHODS Both db/db and nondiabetic lean control (db/m) mice were infected with an adenovirus expressing human ACE2 (Ad-hACE2-eGFP) or the control virus (Ad-eGFP) via injection into the pancreas. Glycemia and β-cell function were assessed 1 week later at the peak of viral expression. RESULTS In 8-week-old db/db mice, Ad-hACE2-eGFP significantly improved fasting glycemia, enhanced intraperitoneal glucose tolerance, increased islet insulin content and β-cell proliferation, and reduced β-cell apoptosis compared with Ad-eGFP. ACE2 overexpression had no effect on insulin sensitivity in comparison with Ad-eGFP treatment in diabetic mice. Angiotensin-(1-7) receptor blockade by D-Ala(7)-Ang-(1-7) prevented the ACE2-mediated improvements in intraperitoneal glucose tolerance, glycemia, and islet function and also impaired insulin sensitivity in both Ad-hACE2-eGFP- and Ad-eGFP-treated db/db mice. D-Ala(7)-Ang-(1-7) had no effect on db/m mice. In 16-week-old diabetic mice, Ad-hACE2-eGFP treatment improved fasting blood glucose but had no effect on any of the other parameters. CONCLUSIONS These findings identify ACE2 as a novel target for the prevention of β-cell dysfunction and apoptosis occurring in type 2 diabetes.
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Affiliation(s)
- Sharell M. Bindom
- From the Department of Pharmacology and Experimental Therapeutics and the Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Chetan P. Hans
- From the Department of Pharmacology and Experimental Therapeutics and the Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Huijing Xia
- From the Department of Pharmacology and Experimental Therapeutics and the Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - A. Hamid Boulares
- From the Department of Pharmacology and Experimental Therapeutics and the Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
| | - Eric Lazartigues
- From the Department of Pharmacology and Experimental Therapeutics and the Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana
- Corresponding author: Eric Lazartigues,
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26
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Zerfaoui M, Errami Y, Naura AS, Suzuki Y, Kim H, Ju J, Liu T, Hans CP, Kim JG, Abd Elmageed ZY, Koochekpour S, Catling A, Boulares AH. Poly(ADP-ribose) polymerase-1 is a determining factor in Crm1-mediated nuclear export and retention of p65 NF-kappa B upon TLR4 stimulation. J Immunol 2010; 185:1894-902. [PMID: 20610652 PMCID: PMC2910824 DOI: 10.4049/jimmunol.1000646] [Citation(s) in RCA: 123] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The role of NF-kappaB in the expression of inflammatory genes and its participation in the overall inflammatory process of chronic diseases and acute tissue injury are well established. We and others have demonstrated a critical involvement of poly(ADP-ribose) polymerase (PARP)-1 during inflammation, in part, through its relationship with NF-kappaB. However, the mechanism by which PARP-1 affects NF-kappaB activation has been elusive. In this study, we show that PARP-1 inhibition by gene knockout, knockdown, or pharmacologic blockade prevented p65 NF-kappaB nuclear translocation in smooth muscle cells upon TLR4 stimulation, NF-kappaB DNA-binding activity, and subsequent inducible NO synthase and ICAM-1 expression. Such defects were reversed by reconstitution of PARP-1 expression. PARP-1 was dispensable for LPS-induced IkappaBalpha phosphorylation and subsequent degradation but was required for p65 NF-kappaB phosphorylation. A perinuclear p65 NF-kappaB localization in LPS-treated PARP-1(-/-) cells was associated with an export rather an import defect. Indeed, whereas PARP-1 deficiency did not alter expression of importin alpha3 and importin alpha4 and their cytosolic localization, the cytosolic levels of exportin (Crm)-1 were increased. Crm1 inhibition promoted p65 NF-kappaB nuclear accumulation as well as reversed LPS-induced p65 NF-kappaB phosphorylation and inducible NO synthase and ICAM-1 expression. Interestingly, p65 NF-kappaB poly(ADP-ribosyl)ation decreased its interaction with Crm1 in vitro. Pharmacologic inhibition of PARP-1 increased p65 NF-kappaB-Crm1 interaction in LPS-treated smooth muscle cells. These results suggest that p65 NF-kappaB poly(ADP-ribosyl)ation may be a critical determinant for the interaction with Crm1 and its nuclear retention upon TLR4 stimulation. These results provide novel insights into the mechanism by which PARP-1 promotes NF-kappaB nuclear retention, which ultimately can influence NF-kappaB-dependent gene regulation.
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MESH Headings
- Active Transport, Cell Nucleus/genetics
- Active Transport, Cell Nucleus/immunology
- Animals
- Cell Line
- Cell Nucleus/enzymology
- Cell Nucleus/immunology
- Cell Nucleus/metabolism
- Cells, Cultured
- DNA-Binding Proteins/biosynthesis
- Gene Expression Regulation/immunology
- Humans
- Intercellular Adhesion Molecule-1/biosynthesis
- Karyopherins/antagonists & inhibitors
- Karyopherins/physiology
- Lipopolysaccharides/physiology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Myocytes, Smooth Muscle/enzymology
- Myocytes, Smooth Muscle/immunology
- Myocytes, Smooth Muscle/metabolism
- Poly (ADP-Ribose) Polymerase-1
- Poly(ADP-ribose) Polymerase Inhibitors
- Poly(ADP-ribose) Polymerases/deficiency
- Poly(ADP-ribose) Polymerases/physiology
- Receptors, Cytoplasmic and Nuclear/antagonists & inhibitors
- Receptors, Cytoplasmic and Nuclear/physiology
- Toll-Like Receptor 4/physiology
- Transcription Factor RelA/antagonists & inhibitors
- Transcription Factor RelA/metabolism
- Transcription Factor RelA/physiology
- Exportin 1 Protein
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Affiliation(s)
- Mourad Zerfaoui
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, 1901 Perdido Street, New Orleans, LA 70112, USA.
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27
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Naura AS, Zerfaoui M, Kim H, Abd Elmageed ZY, Rodriguez PC, Hans CP, Ju J, Errami Y, Park J, Ochoa AC, Boulares AH. Requirement for inducible nitric oxide synthase in chronic allergen exposure-induced pulmonary fibrosis but not inflammation. J Immunol 2010; 185:3076-85. [PMID: 20668217 DOI: 10.4049/jimmunol.0904214] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The role of inducible NO synthase (iNOS) in allergic airway inflammation remains elusive. We tested the hypothesis that iNOS plays different roles during acute versus chronic airway inflammation. Acute and chronic mouse models of OVA-induced airway inflammation were used to conduct the study. We showed that iNOS deletion was associated with a reduction in eosinophilia, mucus hypersecretion, and IL-5 and IL-13 production upon the acute protocol. Such protection was completely abolished upon the chronic protocol. Interestingly, pulmonary fibrosis observed in wild-type mice under the chronic protocol was completely absent in iNOS(-/-) mice despite persistent IL-5 and IL-13 production, suggesting that these cytokines were insufficient for pulmonary fibrosis. Such protection was associated with reduced collagen synthesis and indirect but severe TGF-beta modulation as confirmed using primary lung smooth muscle cells. Although activation of matrix metalloproteinase-2/-9 exhibited little change, the large tissue inhibitor of metalloproteinase-2 (TIMP-2) increase detected in wild-type mice was absent in the iNOS(-/-) counterparts. The regulatory effect of iNOS on TIMP-2 may be mediated by peroxynitrite, as the latter reversed TIMP-2 expression in iNOS(-/-) lung smooth muscle cells and fibroblasts, suggesting that the iNOS-TIMP-2 link may explain the protective effect of iNOS-knockout against pulmonary fibrosis. Analysis of lung sections from chronically OVA-exposed iNOS(-/-) mice revealed evidence of residual but significant protein nitration, prevalent oxidative DNA damage, and poly(ADP-ribose) polymerase-1 activation. Such tissue damage, inflammatory cell recruitment, and mucus hypersecretion may be associated with substantial arginase expression and activity. The results in this study exemplify the complexity of the role of iNOS in asthma and the preservation of its potential as a therapeutic a target.
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Affiliation(s)
- Amarjit S Naura
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA.
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Hans CP, Feng Y, Naura AS, Troxclair D, Zerfaoui M, Siddiqui D, Jihang J, Kim H, Kaye AD, Matrougui K, Lazartigues E, Boulares AH. Opposing roles of PARP-1 in MMP-9 and TIMP-2 expression and mast cell degranulation in dyslipidemic dilated cardiomyopathy. Cardiovasc Pathol 2010; 20:e57-68. [PMID: 20434371 DOI: 10.1016/j.carpath.2010.03.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [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] [Received: 12/14/2009] [Revised: 02/26/2010] [Accepted: 03/12/2010] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Previously, we demonstrated that inhibition of poly(ADP-ribose) polymerase (PARP) exerts protective effects against high-fat (HF) diet-induced atherogenesis in part by increasing tissue inhibitor of metalloproteinase (TIMP)-2 expression. Given that characteristics of dilated cardiomyopathy closely associate with atherosclerosis and are mediated by an imbalance between matrix metalloproteinases (MMPs) and TIMPs, we hypothesized that PARP-1 gene deletion may protect against HF-induced cardiac hypertrophy and dilatations by altering TIMP-2/MMPs balance in favor of a maintenance of tissue homeostasis. METHODS AND RESULTS Hemodynamic parameters determined by echocardiography were similar in ApoE(-/-) mice and PARP-1-deficient ApoE(-/-) mice (DKO) fed a regular diet (RD). However, histological analysis revealed that cardiomyocytes of ApoE(-/-) mice on RD were hypertrophied, displaying an enlarged cell body and nucleus, traits that were absent in DKO animals. HF diet-fed ApoE(-/-) mice exhibited increased interventricular septum, left ventricular (LV) internal dimension, LV volume, and LV mass in addition to a separation of myocardial fibers suggestive of dilated cardiomyopathy. PARP-1 gene deletion protected against these degenerative changes. MMP activity was dramatically increased in hearts of ApoE(-/-) mice on HF diet and was accompanied by increased collagen degradation, mast cell degranulation, and increased myocyte cell death. PARP-1 gene knockout was associated with increased TIMP-2 expression antagonizing, as a result, the damaging effects of active MMPs. CONCLUSIONS The present study demonstrates that PARP-1 gene deletion exerts protective effects against HF diet-induced dilated cardiomyopathy by maintaining increased expression of TIMP-2. With additional protective effects against cell death and inflammation, PARP-1 deficiency preserves cardiac tissue homeostasis.
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Affiliation(s)
- Chetan P Hans
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA, USA.
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Zerfaoui M, Naura AS, Errami Y, Hans CP, Rezk BM, Park J, Elsegeiny W, Kim H, Lord K, Kim JG, Boulares AH. Effects of PARP-1 deficiency on airway inflammatory cell recruitment in response to LPS or TNF: differential effects on CXCR2 ligands and Duffy Antigen Receptor for Chemokines. J Leukoc Biol 2009; 86:1385-92. [PMID: 19741160 PMCID: PMC2780916 DOI: 10.1189/jlb.0309183] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [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: 03/18/2009] [Revised: 07/11/2009] [Accepted: 07/30/2009] [Indexed: 12/14/2022] Open
Abstract
We reported that PARP-1 exhibits differential roles in expression of inflammatory factors. Here, we show that PARP-1 deletion was associated with a significant reduction in inflammatory cell recruitment to mouse airways upon intratracheal administration of LPS. However, PARP-1 deletion exerted little effect in response to TNF exposure. LPS induced massive neutrophilia and moderate recruitment of macrophages, and TNF induced recruitment of primarily macrophages with smaller numbers of neutrophils in the lungs. Following either exposure, macrophage recruitment was blocked severely in PARP-1(-/-) mice, and this was associated with a marked reduction in MCP-1 and MIP-1alpha. This association was corroborated partly by macrophage recruitment in response to intratracheal administration of MCP-1 in PARP-1(-/-) mice. Surprisingly, although neutrophil recruitment was reduced significantly in LPS-treated PARP-1(-/-) mice, neutrophil numbers increased in TNF-treated mice, suggesting that PARP-1 deletion may promote a macrophagic-to-neutrophilic shift in the inflammatory response upon TNF exposure. Neutrophil-specific chemokines mKC and MIP-2 were reduced significantly in lungs of LPS-treated but only partially reduced in TNF-treated PARP-1(-/-) mice. Furthermore, the MIP-2 antagonist abrogated the shift to a neutrophilic response in TNF-exposed PARP-1(-/-) mice. Although CXCR2 expression increased in response to either stimulus in PARP-1(+/+) mice, the DARC increased only in lungs of TNF-treated PARP-1(+/+) mice; both receptors were reduced to basal levels in treated PARP-1(-/-) mice. Our results show that the balance of pro-neutrophilic or pro-macrophagic stimulatory factors and the differential influence of PARP-1 on these factors are critical determinants for the nature of the airway inflammatory response.
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Affiliation(s)
- Mourad Zerfaoui
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana 70112, USA
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Naura AS, Hans CP, Zerfaoui M, Errami Y, Ju J, Kim H, Matrougui K, Kim JG, Boulares AH. High-fat diet induces lung remodeling in ApoE-deficient mice: an association with an increase in circulatory and lung inflammatory factors. J Transl Med 2009; 89:1243-51. [PMID: 19752857 PMCID: PMC2784111 DOI: 10.1038/labinvest.2009.98] [Citation(s) in RCA: 45] [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] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Hypercholesterolemia is increasingly considered the basis for not only cardiovascular pathologies but also several complications affecting other organs such as lungs. In this study, we examined the effect of hypercholesterolemia on lung integrity using a mouse model (ApoE(-/-)) of high-fat (HF) diet-induced atherosclerosis. A 12-week HF diet regimen induced systemic production of TNF-alpha, IFN-gamma, GMC-SF, RANTES, IL-1alpha, IL-2 and IL-12 with TNF-alpha as the predominant cytokine in ApoE(-/-) mice. Concomitantly, TNF-alpha, IFN-gamma and MIP-1alpha were detected in brochoalveolar lavage (BAL) fluids of these mice, coinciding with lung inflammation consisting primarily of monocytes/macrophages. Such lung inflammation correlated with marked collagen deposition and an increase in matrix metalloproteinase-9 activity in ApoE(-/-)mice without mucus production. Although TGF-beta1 was undetectable in the BAL fluid of ApoE(-/-) mice on HF diet, it showed a much wider tissue distribution compared with that of control animals. Direct exposure of smooth muscle cells to oxidized-LDL, in vitro, induced a time-dependent expression of TNF-alpha. Direct intratracheal TNF-alpha-administration induced a lung inflammation pattern in wild-type mice that was strikingly similar to that induced by HF diet in ApoE(-/-) mice. TNF-alpha administration induced expression of several factors known to be critically involved in lung remodeling, such as MCP-1, IL-1beta, TGF-beta1, adhesion molecules, collagen type-I and TNF-alpha itself in the lungs of treated mice. These results suggest that hypercholesterolemia may promote chronic inflammatory conditions in lungs that are conducive to lung remodeling potentially through TNF-alpha-mediated processes.
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Affiliation(s)
| | | | | | | | | | | | | | | | - A. Hamid Boulares
- Corresponding Author: Hamid Boulares, Ph.D., Louisiana State University Health Sciences Center, Department of Pharmacology and Experimental Therapeutics, 1901 Perdido St., New Orleans, LA 70112, U.S.A., (fax (504) 568-2361, )
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Hans CP, Feng Y, Naura AS, Zerfaoui M, Rezk BM, Xia H, Kaye AD, Matrougui K, Lazartigues E, Boulares AH. Protective effects of PARP-1 knockout on dyslipidemia-induced autonomic and vascular dysfunction in ApoE mice: effects on eNOS and oxidative stress. PLoS One 2009; 4:e7430. [PMID: 19823587 PMCID: PMC2757717 DOI: 10.1371/journal.pone.0007430] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [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: 06/26/2009] [Accepted: 09/14/2009] [Indexed: 02/07/2023] Open
Abstract
The aims of this study were to investigate the role of poly(ADP-ribose) polymerase (PARP)-1 in dyslipidemia-associated vascular dysfunction as well as autonomic nervous system dysregulation. Apolipoprotein (ApoE)−/− mice fed a high-fat diet were used as a model of atherosclerosis. Vascular and autonomic functions were measured in conscious mice using telemetry. The study revealed that PARP-1 plays an important role in dyslipidemia-associated vascular and autonomic dysfunction. Inhibition of this enzyme by gene knockout partially restored baroreflex sensitivity in ApoE−/− mice without affecting baseline heart-rate and arterial pressure, and also improved heart-rate responses following selective blockade of the autonomic nervous system. The protective effect of PARP-1 gene deletion against dyslipidemia-induced endothelial dysfunction was associated with preservation of eNOS activity. Dyslipidemia induced PARP-1 activation was accompanied by oxidative tissue damage, as evidenced by increased expression of iNOS and subsequent protein nitration. PARP-1 gene deletion reversed these effects, suggesting that PARP-1 may contribute to vascular and autonomic pathologies by promoting oxidative tissue injury. Further, inhibition of this oxidative damage may account for protective effects of PARP-1 gene deletion on vascular and autonomic functions. This study demonstrates that PARP-1 participates in dyslipidemia-mediated dysregulation of the autonomic nervous system and that PARP-1 gene deletion normalizes autonomic and vascular dysfunctions. Maintenance of eNOS activity may be associated with the protective effect of PARP-1 gene deletion against dyslipidemia-induced endothelial dysfunction.
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Affiliation(s)
- Chetan P. Hans
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Yumei Feng
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Amarjit S. Naura
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Mourad Zerfaoui
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Bashir M. Rezk
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Huijing Xia
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Alan D. Kaye
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
- Department of Anesthesiology Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - Khalid Matrougui
- Department of Physiology, Tulane University Medical Center, New Orleans, Louisiana, United States of America
| | - Eric Lazartigues
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
| | - A. Hamid Boulares
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana, United States of America
- * E-mail:
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Boulares HA, Naura AS, Hans CP, Zerfaoui M, Errami Y, Ju J, Kim H, Kim J. High Fat Diet Induces Lung Remodeling in Apoe Deficient Mice: An Association with an Increase In Circulatory and Lung Inflammatory Factors (94.31). The Journal of Immunology 2009. [DOI: 10.4049/jimmunol.182.supp.94.31] [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] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Abstract
Hypercholesterolemia is increasingly considered the basis for not only cardiovascular pathologies but also several complications affecting other organs including lungs. Here, we examined the effect of hypercholesterolemia on lung integrity using a mouse model (ApoE−/−) of high fat (HF) diet-induced atherosclerosis. A twelve-week HF diet regimen induced systemic production of TNF-α, IFN-γ, GMC-SF, RANTES, IL-1α, IL-2, and IL-12 with TNF-α as the predominant cytokine in ApoE−/− mice. Concomitantly, TNF-α, IFN-γ, and MIP-1α were detected in brochoalveolar lavage fluids of these mice, coinciding with lung inflammation consisting primarily of monocytes/macrophages. Such lung inflammation correlated with marked collagen deposition and an increase in matrix metalloproteinase-9 activity in ApoE−/− mice without mucus production or the mucus-promoting IL-13. Although TGF-β was undetectable in brochoalveolar lavage fluid of ApoE−/− mice on HF diet, it displayed a much wider tissue distribution compared to that of control animals. Direct intratracheal TNF-α-administration induced a lung inflammation pattern in wild-type mice that was strikingly similar to that induced by HF diet in ApoE−/− mice. TNF-α administration induced expression of several factors known to be critically involved in lung remodeling including MCP-1, IL-1β, TGF-β1, adhesion molecules, collagen type-1, and TNF-α itself in the lungs of treated mice. These results suggest that hypercholesterolemia may promote chronic inflammatory conditions in lungs that are conducive to lung remodeling potentially through TNF-α-mediated processes.
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Affiliation(s)
| | | | | | | | | | - Jihang Ju
- 2Department of Pathology, LSU Health Sciences Center, New Orleans, LA
| | - Hogyoung Kim
- 2Department of Pathology, LSU Health Sciences Center, New Orleans, LA
| | - Jong Kim
- 2Department of Pathology, LSU Health Sciences Center, New Orleans, LA
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Hans CP, Zerfaoui M, Naura AS, Troxclair D, Strong JP, Matrougui K, Boulares AH. Thieno[2,3-c]isoquinolin-5-one, a potent poly(ADP-ribose) polymerase inhibitor, promotes atherosclerotic plaque regression in high-fat diet-fed apolipoprotein E-deficient mice: effects on inflammatory markers and lipid content. J Pharmacol Exp Ther 2009; 329:150-8. [PMID: 19124646 DOI: 10.1124/jpet.108.145938] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
We recently showed that poly(ADP-ribose) polymerase (PARP) is activated within atherosclerotic plaques in an animal model of atherosclerosis. Pharmacological inhibition of PARP or reduced expression in heterozygous animals interferes with atherogenesis and may promote factors of plaque stability, possibly reflecting changes in inflammatory and cellular factors consistent with plaque stability. The current study addresses the hypothesis that pharmacological inhibition of PARP promotes atherosclerotic plaque regression. Using a high-fat diet-induced atherosclerosis apolipoprotein E(-/-) mouse model, we demonstrate that administration of the potent PARP inhibitor, thieno[2,3-c]isoquinolin-5-one (TIQ-A), when combined with a regular diet regimen during treatment, induced regression of established plaques. Plaque regression was associated with a reduction in total cholesterol and low-density lipoproteins. Furthermore, plaques of TIQ-A-treated mice were highly enriched with collagen and smooth muscle cells, displayed thick fibrous caps, and exhibited a marked reduction in CD68-positive macrophage recruitment and associated foam cell presence. These changes correlated with a significant decrease in expression of monocyte chemoattractant protein-1 and intercellular cell adhesion molecule-1, potentially as a result of a robust reduction in tumor necrosis factor expression. The PARP inhibitor appeared to affect cholesterol metabolism by affecting acyl-coenzymeA/cholesterol acyltransferase-1 expression but exerted no effect on cholesterol influx or efflux as assessed by an examination of the ATP-binding cassette transporter-1 and the scavenger receptor-A expression levels in the different experimental groups. In accordance, PARP inhibition may prove beneficial not only in preventing atherogenesis but also in promoting regression of preexisting plaques.
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Affiliation(s)
- Chetan P Hans
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
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Naura AS, Datta R, Hans CP, Zerfaoui M, Rezk BM, Errami Y, Oumouna M, Matrougui K, Boulares AH. Reciprocal regulation of iNOS and PARP-1 during allergen-induced eosinophilia. Eur Respir J 2008; 33:252-62. [PMID: 18829681 DOI: 10.1183/09031936.00089008] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Inducible nitric oxide synthase (iNOS) inhibition was recently shown to exert no effect on allergen challenge in human asthma, raising serious concerns about the role of the protein in the disease. The present study investigated the role of iNOS in ovalbumin-induced eosinophilia from the perspective of its relationship with poly(ADP-ribose) polymerase-1 (PARP-1) and oxidative DNA damage. A mouse model of ovalbumin-induced eosinophilia was used to conduct the studies. iNOS-associated protein nitration and tissue damage were partially responsible for allergen-induced eosinophilia. iNOS expression was required for oxidative DNA damage and PARP-1 activation upon allergen challenge. PARP-1 was required for iNOS expression and protein nitration, and this requirement was connected to nuclear factor-kappaB. PARP-1 was an important substrate for iNOS-associated by-products after ovalbumin-challenge. PARP-1 nitration blocked its poly(ADP-ribosyl)ation activity. Interleukin-5 re-establishment in ovalbumin-exposed PARP-1(-/-) mice reversed eosinophilia and partial mucus production without a reversal of iNOS expression, concomitant protein nitration or associated DNA damage. The present results demonstrate a reciprocal relationship between inducible nitric oxide synthase and poly(ADP-ribose) polymerase-1 and suggest that expression of inducible nitric oxide synthase may be dispensable for eosinophilia after interleukin-5 production. Inducible nitric oxide synthase may be required for oxidative DNA damage and full manifestation of mucus production. Such dispensability may explain, in part, the reported ineffectiveness of inducible nitric oxide synthase inhibition in preventing allergen-induced inflammation in humans.
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Affiliation(s)
- A S Naura
- Louisiana State University Health Sciences Center, Dept of Pharmacology and Experimental Therapeutics, 1901 Perdido St., New Orleans, LA 70112, USA
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Naura AS, Hans CP, Zerfaoui M, You D, Cormier SA, Oumouna M, Boulares AH. Post-allergen challenge inhibition of poly(ADP-ribose) polymerase harbors therapeutic potential for treatment of allergic airway inflammation. Clin Exp Allergy 2008; 38:839-46. [PMID: 18261157 DOI: 10.1111/j.1365-2222.2008.02943.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Identifying therapeutic drugs that block the release or effects of T-helper type 2 (Th2) cytokines after allergen exposure is an important goal for the treatment of allergic inflammatory diseases including asthma. We recently showed, using a murine model of allergic airway inflammation, that poly(ADP-ribose) polymerase (PARP) plays an important role in the pathogenesis of asthma-related lung inflammation. PARP inhibition, by single injection of a novel inhibitor, thieno[2,3-c]isoquinolin-5-one (TIQ-A), before ovalbumin (OVA) challenge, prevented airway eosinophilia in C57BL/6 mice with concomitant suppression of Th2 cytokine production and mucus secretion. OBJECTIVE To evaluate the efficacy of the drug when it is given after OVA challenge for its possible therapeutic potential. METHODS This study was conducted using a murine model of allergic airway inflammation. RESULTS A single injection of TIQ-A (6 mg/kg) one or 6 h post-allergen challenge conferred similar reduction in OVA challenge-induced eosinophilia. More significantly, post-allergen challenge administration of the drug exerted even better suppression on the production of IL-4, IL-5, IL-13, and IgE and prevented airway hyperresponsiveness to inhaled-methacholine. The significant decrease in IL-13 was accompanied by a complete absence of airways mucus production indicating a potential protection against allergen-induced airway remodelling. CONCLUSION The coincidence of the inflammation trigger and the time of drug administration appear to be important for the drug's more pronounced protection. The observed time window for efficacy, 1 or 6 h after allergen challenge may be of great clinical interest. These findings may provide a novel therapeutic strategy for the treatment of allergic airway inflammation, including asthma.
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Affiliation(s)
- A S Naura
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
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Hans CP, Zerfaoui M, Naura AS, Catling A, Boulares AH. Differential effects of PARP inhibition on vascular cell survival and ACAT-1 expression favouring atherosclerotic plaque stability. Cardiovasc Res 2008; 78:429-39. [PMID: 18245064 DOI: 10.1093/cvr/cvn018] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [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: 11/12/2022] Open
Abstract
AIMS The aim of this study was to take a combination of animal and cell culture approaches to examine the individual responses of vascular cells to varying inflammatory factors in order to gain insights on the mechanism(s) by which poly(ADP-ribose) polymerase (PARP) inhibition promotes factors of plaque stability. METHODS AND RESULTS Apolipoprotein (ApoE(-/-)) mice fed a high-fat diet were used as a model of atherosclerosis. Primary endothelial cells, smooth muscle cells (SMCs), and ex-vivo generated foam cells (FCs) were used in our in vitro studies. PARP inhibition significantly decreased the markers of oxidative stress and caspase-3 activation and increased smooth muscle actin within plaques from ApoE(-/-) mice fed a high-fat diet. PARP inhibition protected against apoptosis and/or necrosis in SMCs and endothelial cells in response to H(2)O(2) or tumour necrosis factor (TNF). Remarkably, PARP inhibition in FCs resulted in significant sensitization to 7-ketocholesterol (7-KC) by increasing cellular-toxic-free cholesterol, potentially through a down-regulation of acyl-CoA:cholesterol acyltransferase-1 (ACAT-1) expression. 7-KC induced necrosis exclusively in endothelial cells, which was, surprisingly, unaffected by PARP inhibition indicating that PARP inhibition does not prevent all forms of necrotic cell death. In SMCs, PARP-1 inhibition by gene deletion conferred protection against 7-KC or TNF, potentially by reducing caspase-3-like activation, preventing induction of c-Jun N-terminal protein kinase phosphorylation, and inducing extracellular signal-regulated kinase phosphorylation independently of PARP classical enzymatic activity. CONCLUSIONS These data present PARP-1 as an important player in the death of cells constituting atherosclerotic plaques contributing to plaque dynamics. PARP inhibition may be a protective, a neutral, or a sensitizing factor. Additionally, PARP-1 may be a novel factor that can alter lipid metabolism. These novel functions of PARP not only challenge the current understanding of the role of the enzyme in cell death but also provide insights on the intricate contribution of PARP in cellular responses to predominant inflammatory factors within atherosclerotic plaques, presenting additional evidence for the viability of PARP inhibition as a therapeutic strategy for atherosclerosis.
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Affiliation(s)
- Chetan P Hans
- Department of Pharmacology and Experimental Therapeutics, LSU Health Sciences Center, 1901 Perdido St., New Orleans, LA 70112, USA
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Zerfaoui M, Suzuki Y, Naura AS, Hans CP, Nichols C, Boulares AH. Nuclear translocation of p65 NF-kappaB is sufficient for VCAM-1, but not ICAM-1, expression in TNF-stimulated smooth muscle cells: Differential requirement for PARP-1 expression and interaction. Cell Signal 2007; 20:186-94. [PMID: 17993261 DOI: 10.1016/j.cellsig.2007.10.007] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2007] [Revised: 09/27/2007] [Accepted: 10/03/2007] [Indexed: 01/09/2023]
Abstract
Although nuclear translocation of NF-kappaB and subsequent binding to promoters of ICAM-1 and VCAM-1 have been shown to be decisive for their expression, a number of discrepancies in the expression patterns of these adhesion molecules have been reported in both cell culture systems and disease settings, including atherosclerosis, asthma, and autoimmune diseases. Here we show that while p65 NF-kappaB nuclear translocation in TNF-treated smooth muscle cells (SMCs) was sufficient for the expression of VCAM-1, expression of ICAM-1 showed a critical requirement for PARP-1. I-kappaBalpha phosphorylation and subsequent degradation were virtually identical in both TNF-treated wild-type and PARP-1-/- SMCs. VCAM-1 expression in TNF-treated PARP-1-/- SMCs was completely inhibited by the NF-kappaB inhibitor, pyrrolidine dithiocarbamate, confirming that VCAM-1 expression was indeed NF-kappaB-dependent. The expression of both VCAM-1 and ICAM-1 was associated with a transient interaction between PARP-1 and p65 NF-kappaB when examined in the fibroblastic cell line, COS-7, and in the airway epithelial cell line, A549. Such interactions were confirmed using florescence resonance energy transfer analysis. Protein acetylation activity, mediated by p300/CBP, was required for both VCAM-1 and ICAM-1 expression in TNF-treated SMCs; however, the interaction of PARP-1 with p300/CBP was dispensable for VCAM-1 expression. These findings indicate that p65 NF-kappaB nuclear translocation may be sufficient for certain genes (e.g., VCAM-1) while insufficient for others (e.g., ICAM-1), thus providing a novel insight into the role of NF-kappaB in driving target gene expression. Furthermore, the data suggest a differential requirement for PARP-1 expression in inflammatory processes.
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Affiliation(s)
- Mourad Zerfaoui
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA, USA
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Iqbal J, Greiner TC, Patel K, Dave BJ, Smith L, Ji J, Wright G, Sanger WG, Pickering DL, Jain S, Horsman DE, Shen Y, Fu K, Weisenburger DD, Hans CP, Campo E, Gascoyne RD, Rosenwald A, Jaffe ES, Delabie J, Rimsza L, Ott G, Müller-Hermelink HK, Connors JM, Vose JM, McKeithan T, Staudt LM, Chan WC. Distinctive patterns of BCL6 molecular alterations and their functional consequences in different subgroups of diffuse large B-cell lymphoma. Leukemia 2007; 21:2332-43. [PMID: 17625604 PMCID: PMC2366166 DOI: 10.1038/sj.leu.2404856] [Citation(s) in RCA: 141] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Gene expression profiling of diffuse large B-cell lymphoma (DLBCL) has revealed biologically and prognostically distinct subgroups: germinal center B-cell-like (GCB), activated B-cell-like (ABC) and primary mediastinal (PM) DLBCL. The BCL6 gene is often translocated and/or mutated in DLBCL. Therefore, we examined the BCL6 molecular alterations in these DLBCL subgroups, and their impact on BCL6 expression and BCL6 target gene repression. BCL6 translocations at the major breakpoint region (MBR) were detected in 25 (18.8%) of 133 DLBCL cases, with a higher frequency in the PM (33%) and ABC (24%) subgroups than in the GCB (10%) subgroup. Translocations at the alternative breakpoint region (ABR) were detected in five (6.4%) of 78 DLBCL cases, with three cases in ABC and one case each in the GCB and the unclassifiable subgroups. The translocated cases involved IgH and non-IgH partners in about equal frequency and were not associated with different levels of BCL6 mRNA and protein expression. BCL6 mutations were detected in 61% of DLBCL cases, with a significantly higher frequency in the GCB and PM subgroups (>70%) than in the ABC subgroup (44%). Exon-1 mutations were mostly observed in the GCB subgroup. The repression of known BCL6 target genes correlated with the level of BCL6 mRNA and protein expression in GCB and ABC subgroups but not with BCL6 translocation and intronic mutations. No clear inverse correlation between BCL6 expression and p53 expression was observed. Patients with higher BCL6 mRNA or protein expression had a significantly better overall survival. The biological role of BCL6 in translocated cases where repression of known target genes is not demonstrated is intriguing and warrants further investigation.
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Affiliation(s)
- J Iqbal
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - TC Greiner
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - K Patel
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - BJ Dave
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - L Smith
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - J Ji
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - G Wright
- Metabolism Branch and Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - WG Sanger
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - DL Pickering
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - S Jain
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - DE Horsman
- Departments of Pathology and British Columbia Cancer Agency, Vancouver, BC, Canada
| | - Y Shen
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - K Fu
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - DD Weisenburger
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - CP Hans
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - E Campo
- Department of Pathology, Hospital Clinic, University of Barcelona, Barcelona, Spain
| | - RD Gascoyne
- Departments of Pathology and British Columbia Cancer Agency, Vancouver, BC, Canada
| | - A Rosenwald
- Department of Pathology, University of Würzburg, Würzburg, Germany
| | - ES Jaffe
- Metabolism Branch and Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - J Delabie
- Norwegian Radium Hospital, Oslo, Norway
| | - L Rimsza
- Department of Pathology, University of Arizona, Tucson, Arizona, USA
| | - G Ott
- Department of Pathology, University of Würzburg, Würzburg, Germany
| | | | - JM Connors
- Departments of Pathology and British Columbia Cancer Agency, Vancouver, BC, Canada
| | - JM Vose
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - T McKeithan
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - LM Staudt
- Metabolism Branch and Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - WC Chan
- Departments of Pathology and Microbiology, Pediatrics, Internal Medicine, and Preventive and Societal Medicine, University of Nebraska Medical Center, Omaha, NE, USA
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Oumouna-Benachour K, Hans CP, Suzuki Y, Naura A, Datta R, Belmadani S, Fallon K, Woods C, Boulares AH. Poly(ADP-ribose) polymerase inhibition reduces atherosclerotic plaque size and promotes factors of plaque stability in apolipoprotein E-deficient mice: effects on macrophage recruitment, nuclear factor-kappaB nuclear translocation, and foam cell death. Circulation 2007; 115:2442-50. [PMID: 17438151 DOI: 10.1161/circulationaha.106.668756] [Citation(s) in RCA: 85] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Poly(ADP-ribose) polymerase (PARP) was suggested to play a role in endothelial dysfunction that is associated with a number of cardiovascular diseases. We hypothesized that PARP may play an important role in atherogenesis and that its inhibition may attenuate atherosclerotic plaque development in an experimental model of atherosclerosis. METHODS AND RESULTS Using a mouse (apolipoprotein E [ApoE](-/-)) model of high-fat diet-induced atherosclerosis, we demonstrate an association between cell death and oxidative stress-associated DNA damage and PARP activation within atherosclerotic plaques. PARP inhibition by thieno[2,3-c]isoquinolin-5-one reduced plaque number and size and altered structural composition of plaques in these animals without affecting sera lipid contents. These results were corroborated genetically with the use of ApoE(-/-) mice that are heterozygous for PARP-1. PARP inhibition promoted an increase in collagen content, potentially through an increase in tissue inhibitor of metalloproteinase-2, and transmigration of smooth muscle cells to intima of atherosclerotic plaques as well as a decrease in monocyte chemotactic protein-1 production, all of which are markers of plaque stability. In PARP-1(-/-) macrophages, monocyte chemotactic protein-1 expression was severely inhibited because of a defective nuclear factor-kappaB nuclear translocation in response to lipopolysaccharide. Furthermore, PARP-1 gene deletion not only conferred protection to foam cells against H2O2-induced death but also switched the mode of death from necrosis to apoptosis. CONCLUSIONS Our results suggest that PARP inhibition interferes with plaque development and may promote plaque stability, possibly through a reduction in inflammatory factors and cellular changes related to plaque dynamics. PARP inhibition may prove beneficial for the treatment of atherosclerosis.
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MESH Headings
- Active Transport, Cell Nucleus/drug effects
- Animals
- Aortic Diseases/drug therapy
- Aortic Diseases/enzymology
- Aortic Diseases/etiology
- Aortic Diseases/genetics
- Aortic Diseases/pathology
- Apolipoproteins E/deficiency
- Apolipoproteins E/genetics
- Apoptosis
- Atherosclerosis/drug therapy
- Atherosclerosis/enzymology
- Atherosclerosis/etiology
- Atherosclerosis/genetics
- Atherosclerosis/pathology
- Cells, Cultured/drug effects
- Cells, Cultured/metabolism
- Chemokine CCL2/biosynthesis
- Chemokine CCL2/genetics
- Cholesterol/blood
- Collagen/biosynthesis
- Crosses, Genetic
- Diet, Atherogenic
- Drug Evaluation, Preclinical
- Foam Cells/pathology
- Gene Expression Regulation/drug effects
- Genotype
- Hydrogen Peroxide/pharmacology
- Hypercholesterolemia/blood
- Hypercholesterolemia/complications
- Hypercholesterolemia/genetics
- Hypertriglyceridemia/blood
- Hypertriglyceridemia/complications
- Hypertriglyceridemia/genetics
- Isoquinolines/pharmacology
- Isoquinolines/therapeutic use
- Lipopolysaccharides/pharmacology
- Macrophages, Peritoneal/drug effects
- Macrophages, Peritoneal/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- NF-kappa B/metabolism
- Necrosis
- Oxidative Stress
- Poly Adenosine Diphosphate Ribose/physiology
- Poly(ADP-ribose) Polymerase Inhibitors
- Poly(ADP-ribose) Polymerases/genetics
- Poly(ADP-ribose) Polymerases/physiology
- Specific Pathogen-Free Organisms
- Thiophenes/pharmacology
- Thiophenes/therapeutic use
- Tissue Inhibitor of Metalloproteinase-2/metabolism
- Triglycerides/blood
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Affiliation(s)
- Karine Oumouna-Benachour
- Louisiana State University Health Sciences Center, Department of Pharmacology, 1901 Perdido St, New Orleans, LA 70112, USA
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40
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Hans CP, Oumouna‐Benachour K, Suzuki Y, Naura A, Woods CT. Differential Roles of PARP‐1 in oxidants‐mediated cell death in an in vitro model mimicking atherosclerotic plaque dynamics: implication in atherosclerosis. FASEB J 2007. [DOI: 10.1096/fasebj.21.5.a445-b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chetan P. Hans
- Pharmacology and Experimental TherapeuticsLSU Health Science Center1901, Perdido StNew OrleansLA70112
| | - K Oumouna‐Benachour
- Pharmacology and Experimental TherapeuticsLSU Health Science Center1901, Perdido StNew OrleansLA70112
| | - Y Suzuki
- Pharmacology and Experimental TherapeuticsLSU Health Science Center1901, Perdido StNew OrleansLA70112
| | - A Naura
- Pharmacology and Experimental TherapeuticsLSU Health Science Center1901, Perdido StNew OrleansLA70112
| | - C T Woods
- Cardiovascular DivisionOchsner Clinic Foundation, 1514 Jefferson HighwayNew OrleansLA70121
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41
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Ganti AK, Weisenburger DD, Smith LM, Hans CP, Bociek RG, Bierman PJ, Vose JM, Armitage JO. Patients with grade 3 follicular lymphoma have prolonged relapse-free survival following anthracycline-based chemotherapy: the Nebraska Lymphoma Study Group Experience. Ann Oncol 2006; 17:920-7. [PMID: 16524969 DOI: 10.1093/annonc/mdl039] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [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: 01/06/2023] Open
Abstract
BACKGROUND The aim of the study was to determine the outcome and clinical features predictive of survival in patients with follicular lymphoma (FL) treated aggressively and to determine the rate of disease-specific mortality in patients with grade 3 FL (FL3). MATERIALS AND METHODS Four hundred and twenty-one patients with FL who were treated with various anthracycline-based chemotherapy regimens were included in this retrospective study. RESULTS Patients with FL3 and a diffuse component of >50% had the worst outcome, with a hazard ratio of dying of 2.2 (95% CI 1.4-3.4) compared with patients with FL1 or FL2, and a ratio of 1.6 (95% CI 1.02-2.5) compared with FL3 with a diffuse component of < or =50% by multivariate analysis (P = 0.0026). Patients with FL3a had an outcome similar to those with FL3b. In patients with FL3 and a diffuse component of < or =50%, the overall and event-free survival curves showed a plateau for patients younger than 60 years of age. However, there were no differences in the cumulative incidence of relapse/progression or lymphoma-specific/treatment-related mortality between the two age groups. CONCLUSIONS Less than half of the patients with FL3 and a diffuse component of < or =50% treated with anthracycline-based combination chemotherapy will relapse and relapses are uncommon after 6 years. Older patients should be offered the same aggressive chemotherapy as younger patients.
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Affiliation(s)
- A K Ganti
- Department of Internal Medicine, Division of Oncology/Hematology, University of Nebraska Medical Center, Omaha, USA
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42
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Hans CP, Oumouna‐Benachour K, Suzuki Y, Woods TC, Boulares H. PARP‐1 inhibition, pharmacologically or genetically, reduces plaque size and promotes factors of plaque stability in an ApoE−/− mouse model of atherosclerosis. FASEB J 2006. [DOI: 10.1096/fasebj.20.5.lb106-d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chetan P. Hans
- PharmacologyLSU Health Science Center1901, Perdido St.New OrleansLA70112
| | | | - Yasuhiro Suzuki
- PharmacologyLSU Health Science Center1901, Perdido St.New OrleansLA70112
| | - Thomas C Woods
- PharmacologyLSU Health Science Center1901, Perdido St.New OrleansLA70112
| | - Hamid Boulares
- PharmacologyLSU Health Science Center1901, Perdido St.New OrleansLA70112
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43
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Hans CP, Chaudhary DP, Bansal DD. Effect of magnesium supplementation on oxidative stress in alloxanic diabetic rats. Magnes Res 2003; 16:13-9. [PMID: 12735478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Magnesium deficit and oxidative stress are common features of the diabetic state. This concept supported by another observation that magnesium deficiency is also a state of increased oxidative stress prompted us to study the effect of magnesium supplementation on magnesium status and oxidative stress in diabetic rats. For this purpose, male Wistar rats were made diabetic with a single intraperitoneal injection of Alloxan. Experimental diabetes caused a significant decrease in serum and red blood cell magnesium levels and increased urinary excretion of magnesium. Marked increase in plasma malondialdehyde and corresponding decrease in vitamins C & E, uric acid and total thiols was observed in the diabetic rats as compared to control group. In liver, MDA levels were increased significantly with concomitant decrease in vitamin C, non-protein thiols and antioxidant enzymes (SOD & GST). Magnesium supplementation for four weeks restored serum and RBC magnesium levels to near normal levels with marginal but significant decrease in blood glucose levels. Plasma and liver MDA levels were reduced significantly and vitamin C and total thiols were increased significantly with magnesium supplementation. Antioxidant enzyme activity was also increased significantly with magnesium supplementation in diabetic rats. Our data clearly demonstrates that alloxanic diabetes is associated with decreased magnesium status and increased oxidative stress and that magnesium supplementation can in part restore the antioxidant parameters and decrease the oxidative stress in experimental diabetic rats.
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Affiliation(s)
- Chetan P Hans
- Department of Biochemistry, Panjab University, Chandigarh, India 160014
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