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Yadav D, Sharma PK, Malviya R, Mishra PS, Surendra AV, Rao GSNK, Rani BR. Stimuli-responsive Biomaterials for Tissue Engineering Applications. Curr Pharm Biotechnol 2024; 25:981-999. [PMID: 37594093 DOI: 10.2174/1389201024666230818121821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 06/14/2023] [Accepted: 07/12/2023] [Indexed: 08/19/2023]
Abstract
The use of ''smart materials,'' or ''stimulus responsive'' materials, has proven useful in a variety of fields, including tissue engineering and medication delivery. Many factors, including temperature, pH, redox state, light, and magnetic fields, are being studied for their potential to affect a material's properties, interactions, structure, and/or dimensions. New tissue engineering and drug delivery methods are made possible by the ability of living systems to respond to both external stimuli and their own internal signals) for example, materials composed of stimuliresponsive polymers that self assemble or undergo phase transitions or morphology transformation. The researcher examines the potential of smart materials as controlled drug release vehicles in tissue engineering, aiming to enable the localized regeneration of injured tissue by delivering precisely dosed drugs at precisely timed intervals.
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Affiliation(s)
- Deepika Yadav
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University Greater Noida, Uttar Pradesh, India
| | - Pramod Kumar Sharma
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University Greater Noida, Uttar Pradesh, India
| | - Rishabha Malviya
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University Greater Noida, Uttar Pradesh, India
| | - Prem Shankar Mishra
- Department of Pharmacy, School of Medical and Allied Sciences, Galgotias University Greater Noida, Uttar Pradesh, India
| | | | - G S N Koteswara Rao
- Shobhaben Pratapbhai Patel School of Pharmacy, NMIMS Deemed University, Mumbai, India
| | - Budha Roja Rani
- Institute of Pharmaceutical Technology, Sri Padmavathi Mahila Visvavidyalayam, Tirupati, A.P., India
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Ghazali HS, Askari E, Seyfoori A, Naghib SM. A high-absorbance water-soluble photoinitiator nanoparticle for hydrogel 3D printing: synthesis, characterization and in vitro cytotoxicity study. Sci Rep 2023; 13:8577. [PMID: 37237070 DOI: 10.1038/s41598-023-35865-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/25/2023] [Indexed: 05/28/2023] Open
Abstract
Light-based hydrogel crosslinking is a new approach in rapid and high-resolution 3D printing; however, using this method in tissue engineering is challenging due to the toxicity of photoinitiators, their solvents, and their low efficiency. Herein, a novel, water-soluble photoinitiator with high efficiency in light-based 3D printing is introduced. Low-cost photoinitator, 2,4,6-trimethylbenzoylphenyl phosphinate, is converted into nanoparticles via a microemulsion method and dispersed in water. Cell toxicity assays were performed to prove that these nanoparticles are non-toxic and can be used in biomedical applications. Finally, the nanoparticles were utilized in the high-accuracy 3D printing of hydrogels. The results of this study indicate that these particles are potent to be used in bioprinting.
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Affiliation(s)
- Hanieh Sadat Ghazali
- Nanotechnology Department, School of Advanced Technologies, Iran University of Science and Technology, Tehran, Iran
| | - Esfandyar Askari
- Biomaterials and Tissue Engineering Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Amir Seyfoori
- Biomaterials and Tissue Engineering Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Seyed Morteza Naghib
- Nanotechnology Department, School of Advanced Technologies, Iran University of Science and Technology, Tehran, Iran.
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Masood F, Makhdoom MA, Channa IA, Gilani SJ, Khan A, Hussain R, Batool SA, Konain K, Rahman SU, Wadood A, bin Jumah MN, Rehman MAU. Development and Characterization of Chitosan and Chondroitin Sulfate Based Hydrogels Enriched with Garlic Extract for Potential Wound Healing/Skin Regeneration Applications. Gels 2022; 8:gels8100676. [PMID: 36286177 PMCID: PMC9601755 DOI: 10.3390/gels8100676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 10/01/2022] [Accepted: 10/18/2022] [Indexed: 12/04/2022] Open
Abstract
Hydrogels can provide instant relief to pain and facilitate the fast recovery of wounds. Currently, the incorporation of medicinal herbs/plants in polymer matrix is being investigated due to their anti-bacterial and wound healing properties. Herein, we investigated the novel combination of chitosan (CS) and chondroitin sulfate (CHI) to synthesize hydrogels through freeze gelation process and enriched it with garlic (Gar) by soaking the hydrogels in garlic juice for faster wound healing and resistance to microbial growth at the wound surface. The synthesized hydrogels were characterized via Fourier-transform infrared spectroscopy (FTIR), which confirmed the presence of relevant functional groups. The scanning electron microscopy (SEM) images exhibited the porous structure of the hydrogels, which is useful for the sustained release of Gar from the hydrogels. The synthesized hydrogels showed significant inhibition zones against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus). Furthermore, cell culture studies confirmed the cyto-compatibility of the synthesized hydrogels. Thus, the novel hydrogels presented in this study can offer an antibacterial effect during wound healing and promote tissue regeneration.
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Affiliation(s)
- Fatima Masood
- Department of Materials Science and Engineering, Institute of Space Technology, Islamabad 44000, Pakistan
| | - Muhammad Atif Makhdoom
- Institute of Metallurgy and Materials Engineering, University of the Punjab, Lahore 54590, Pakistan
- Correspondence: (M.A.M.); (M.A.U.R.)
| | - Iftikhar Ahmed Channa
- Thin Film Laboratory, Department of Metallurgical Engineering, NED University of Engineering and Technology, Off University Road, Karachi 75270, Pakistan
| | - Sadaf Jamal Gilani
- Department of Basic Health Sciences, Preparatory Year, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Ahmad Khan
- Department of Materials Science and Engineering, Institute of Space Technology, Islamabad 44000, Pakistan
| | - Rabia Hussain
- Department of Materials Science and Engineering, Institute of Space Technology, Islamabad 44000, Pakistan
| | - Syeda Ammara Batool
- Department of Materials Science and Engineering, Institute of Space Technology, Islamabad 44000, Pakistan
| | - Kiran Konain
- Molecular Biology, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar 25120, Pakistan
| | - Saeed Ur Rahman
- Oral Biology, Institute of Basic Medical Sciences, Khyber Medical University, Peshawar 25120, Pakistan
| | - Abdul Wadood
- Department of Materials Science and Engineering, Institute of Space Technology, Islamabad 44000, Pakistan
| | - May Nasser bin Jumah
- Biology Department, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
- Environment and Biomaterial Unit, Health Sciences Research Center, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
- Saudi Society for Applied Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Muhammad Atiq Ur Rehman
- Department of Materials Science and Engineering, Institute of Space Technology, Islamabad 44000, Pakistan
- Correspondence: (M.A.M.); (M.A.U.R.)
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El-Husseiny HM, Mady EA, Hamabe L, Abugomaa A, Shimada K, Yoshida T, Tanaka T, Yokoi A, Elbadawy M, Tanaka R. Smart/stimuli-responsive hydrogels: Cutting-edge platforms for tissue engineering and other biomedical applications. Mater Today Bio 2022; 13:100186. [PMID: 34917924 PMCID: PMC8669385 DOI: 10.1016/j.mtbio.2021.100186] [Citation(s) in RCA: 102] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/14/2021] [Accepted: 12/08/2021] [Indexed: 02/07/2023] Open
Abstract
Recently, biomedicine and tissue regeneration have emerged as great advances that impacted the spectrum of healthcare. This left the door open for further improvement of their applications to revitalize the impaired tissues. Hence, restoring their functions. The implementation of therapeutic protocols that merge biomimetic scaffolds, bioactive molecules, and cells plays a pivotal role in this track. Smart/stimuli-responsive hydrogels are remarkable three-dimensional (3D) bioscaffolds intended for tissue engineering and other biomedical purposes. They can simulate the physicochemical, mechanical, and biological characters of the innate tissues. Also, they provide the aqueous conditions for cell growth, support 3D conformation, provide mechanical stability for the cells, and serve as potent delivery matrices for bioactive molecules. Many natural and artificial polymers were broadly utilized to design these intelligent platforms with novel advanced characteristics and tailored functionalities that fit such applications. In the present review, we highlighted the different types of smart/stimuli-responsive hydrogels with emphasis on their synthesis scheme. Besides, the mechanisms of their responsiveness to different stimuli were elaborated. Their potential for tissue engineering applications was discussed. Furthermore, their exploitation in other biomedical applications as targeted drug delivery, smart biosensors, actuators, 3D and 4D printing, and 3D cell culture were outlined. In addition, we threw light on smart self-healing hydrogels and their applications in biomedicine. Eventually, we presented their future perceptions in biomedical and tissue regeneration applications. Conclusively, current progress in the design of smart/stimuli-responsive hydrogels enhances their prospective to function as intelligent, and sophisticated systems in different biomedical applications.
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Affiliation(s)
- Hussein M. El-Husseiny
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
- Department of Surgery, Anesthesiology, and Radiology, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Elqaliobiya, 13736, Egypt
| | - Eman A. Mady
- Department of Animal Hygiene, Behavior and Management, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Elqaliobiya, 13736, Egypt
| | - Lina Hamabe
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
| | - Amira Abugomaa
- Faculty of Veterinary Medicine, Mansoura University, Mansoura, Dakahliya, 35516, Egypt
| | - Kazumi Shimada
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
- Division of Research Animal Laboratory and Translational Medicine, Research and Development Center, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka, 569-8686, Japan
| | - Tomohiko Yoshida
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
| | - Takashi Tanaka
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
| | - Aimi Yokoi
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
| | - Mohamed Elbadawy
- Department of Pharmacology, Faculty of Veterinary Medicine, Benha University, Moshtohor, Toukh, Elqaliobiya, 13736, Egypt
| | - Ryou Tanaka
- Laboratory of Veterinary Surgery, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai Cho, Fuchu-shi, Tokyo, 1838509, Japan
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Kemp-Harper B. Vasoprotective Actions of Nitroxyl (HNO): A Story of Sibling Rivalry. J Cardiovasc Pharmacol 2021; 78:S13-S18. [PMID: 34840263 DOI: 10.1097/fjc.0000000000001151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 09/23/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT Nitroxyl (HNO), the 1 electron-reduced and protonated form of nitric oxide (NO•), has emerged as a nitrogen oxide with a suite of vasoprotective properties and therapeutic advantages over its redox sibling. Although HNO has garnered much attention due to its cardioprotective actions in heart failure, its ability to modulate vascular function, without the limitations of tolerance development and NO• resistance, is desirable in the treatment of vascular disease. HNO serves as a potent vasodilator and antiaggregatory agent and has an ability to limit vascular inflammation and reactive oxygen species generation. In addition, its resistance to scavenging by reactive oxygen species and ability to target distinct vascular signaling pathways (Kv, KATP, and calcitonin gene-related peptide) contribute to its preserved efficacy in hypertension, diabetes, and hypercholesterolemia. In this review, the vasoprotective actions of HNO will be compared with those of NO•, and the therapeutic utility of HNO donors in the treatment of angina, acute cardiovascular emergencies, and chronic vascular disease are discussed.
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Affiliation(s)
- Barbara Kemp-Harper
- Department of Pharmacology, Cardiovascular Disease Program, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
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Enzymatically Crosslinked In Situ Synthesized Silk/Gelatin/Calcium Phosphate Hydrogels for Drug Delivery. MATERIALS 2021; 14:ma14237191. [PMID: 34885345 PMCID: PMC8658330 DOI: 10.3390/ma14237191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/15/2021] [Accepted: 11/22/2021] [Indexed: 11/17/2022]
Abstract
Our research focuses on combining the valuable properties of silk fibroin (SF) and calcium phosphate (CaP). SF is a natural protein with an easily modifiable structure; CaP is a mineral found in the human body. Most of the new age biocomposites lack interaction between organic/inorganic phase, thus SF/CaP composite could not only mimic the natural bone, but could also be used to make drug delivery systems as well, which can ensure both healing and regeneration. CaP was synthesized in situ in SF at different pH values, and then crosslinked with gelatin (G), horseradish peroxide (HRP), and hydrogen peroxide (H2O2). In addition, dexamethasone phosphate (DEX) was incorporated in the hydrogel and drug delivery kinetics was studied. Hydrogel made at pH 10.0 was found to have the highest gel fraction 110.24%, swelling degree 956.32%, and sustained drug delivery for 72 h. The highest cell viability was observed for the hydrogel, which contained brushite (pH 6)-512.43%.
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Yu L, Newton ER, Gillis DC, Sun K, Cooley BC, Keith AN, Sheiko SS, Tsihlis ND, Kibbe MR. Coating small-diameter ePTFE vascular grafts with tunable poly(diol-co-citrate-co-ascorbate) elastomers to reduce neointimal hyperplasia. Biomater Sci 2021; 9:5160-5174. [PMID: 34312627 DOI: 10.1039/d1bm00101a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Lack of long-term patency has hindered the clinical use of small-diameter prosthetic vascular grafts with the majority of these failures due to the development of neointimal hyperplasia. Previous studies by our laboratory revealed that small-diameter expanded polytetrafluoroethylene (ePTFE) grafts coated with antioxidant elastomers are a promising localized therapy to inhibit neointimal hyperplasia. This work is focused on the development of poly(diol-co-citrate-co-ascorbate) (POCA) elastomers with tunable properties for coating ePTFE vascular grafts. A bioactive POCA elastomer (@20 : 20 : 8, [citrate] : [diol] : [ascorbate]) coating was applied on a 1.5 mm diameter ePTFE vascular graft as the most promising therapeutic candidate for reducing neointimal hyperplasia. Surface ascorbate density on the POCA elastomer was increased to 67.5 ± 7.3 ng mg-1 cm-2. The mechanical, antioxidant, biodegradable, and biocompatible properties of POCA demonstrated desirable performance for in vivo use, inhibiting human aortic smooth muscle cell proliferation, while supporting human aortic endothelial cells. POCA elastomer coating number was adjusted by a modified spin-coating method to prepare small-diameter ePTFE vascular grafts similar to natural vessels. A significant reduction in neointimal hyperplasia was observed after implanting POCA-coated ePTFE vascular grafts in a guinea pig aortic interposition bypass graft model. POCA elastomer thus offers a new avenue that shows promise for use in vascular engineering to improve long-term patency rates by coating small-diameter ePTFE vascular grafts.
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Affiliation(s)
- Lu Yu
- Department of Surgery, University of North Carolina at Chapel Hill, 4001 Burnett-Womack Building, CB #7050, Chapel Hill, NC 27599-7050, USA.
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Kalinin RE, Suchkov IA, Chobanian AA, Nikiforov AA, Dmitrieva MN, Isakov SA. [Markers of the course of obliterating atherosclerosis of lower limb arteries]. ANGIOLOGIIA I SOSUDISTAIA KHIRURGIIA = ANGIOLOGY AND VASCULAR SURGERY 2021; 27:17-24. [PMID: 34166340 DOI: 10.33529/angio2021203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
AIM The purpose of the study was to determine the level of substances damaging the vascular endothelium, as well as to assess their effect on the functional state of the endothelium and the course of obliterating atherosclerosis of lower limb arteries. PATIENTS AND METHODS The study included a total of 112 people, subdivided into three groups: those with an unfavourable course of obliterating atherosclerosis of lower limbs arteries (n=48) - group 1, patients with obliterating atherosclerosis of lower limbs arteries with a conventionally favourable course (n=48) - group 2, and apparently healthy volunteers (n=16). In all subjects, the following parameters were analysed: stable metabolites of nitric oxide II, endothelin-1, homocysteine and basal insulin. RESULTS The level of stable nitric oxide metabolites (p<0.001 as compared with group 1; p<0.045 compared with group 2) was lower in the groups of patients with obliterating atherosclerosis of lower limb arteries (88.5±7.3 μmol/L in group 1; 161.5±8.6 μmol/L in group 2) as compared with healthy volunteers (226.0±28.6 μmol/L). In its turn, the level of nitric oxide was statistically significantly lower (p<0.001) in group 1 patients as compared with those of group 2. The level of endothelin-1 turned out to be higher (p<0.001) in group 1 (2.1±0.1 ng/ml) as compared with group 2 (1.6±0.1 ng/ml). Comparing group 1 patients with healthy volunteers (1.4±0.1 ng/ml), the level of endothelin-1 had also higher values (p<0.001). The level of endothelin-1 did not differ (p=0.270) as compared with group 2 and healthy volunteers. Comparing the homocysteine level in patients of the examined groups (20.7±0.8 μmol/L in group 1 patients and 18.1±0.6 μmol/L in group 2 patients) with healthy volunteers (13.0±0.4 μmol/L) demonstrated an increase in the parameters (p<0.001). The level of homocysteine turned out to be higher in group 1 patients than in those of group 2 (p<0.001). The level of basal insulin turned out to be significantly higher in the studied groups of patients with obliterating atherosclerosis of lower limb arteries (24.9±4.6 mIU/L in group 1; 8.0±0.7 mIU/L in group 2) than in healthy volunteers (5.1±0.5 mIU/L). Statistically significant (p<0.001) hyperinsulinemia was observed in group 1 as compared with group 2. CONCLUSION Hyperhomocysteinemia and hyperinsulinemia are predictors of an unfavourable course of the disease. In a high level of these parameters, one may predict an unfavourable course of obliterating atherosclerosis of lower limb arteries.
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Affiliation(s)
- R E Kalinin
- I.P. Pavlov Ryazan State Medical University of the RF Ministry of Public Health, Ryazan, Russia
| | - I A Suchkov
- I.P. Pavlov Ryazan State Medical University of the RF Ministry of Public Health, Ryazan, Russia
| | - A A Chobanian
- I.P. Pavlov Ryazan State Medical University of the RF Ministry of Public Health, Ryazan, Russia
| | - A A Nikiforov
- I.P. Pavlov Ryazan State Medical University of the RF Ministry of Public Health, Ryazan, Russia
| | - M N Dmitrieva
- I.P. Pavlov Ryazan State Medical University of the RF Ministry of Public Health, Ryazan, Russia
| | - S A Isakov
- I.P. Pavlov Ryazan State Medical University of the RF Ministry of Public Health, Ryazan, Russia
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Huang YQ, Jin HF, Zhang H, Tang CS, Du JB. Interaction among Hydrogen Sulfide and Other Gasotransmitters in Mammalian Physiology and Pathophysiology. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1315:205-236. [PMID: 34302694 DOI: 10.1007/978-981-16-0991-6_9] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hydrogen sulfide (H2S), nitric oxide (NO), carbon monoxide (CO), and sulfur dioxide (SO2) were previously considered as toxic gases, but now they are found to be members of mammalian gasotransmitters family. Both H2S and SO2 are endogenously produced in sulfur-containing amino acid metabolic pathway in vivo. The enzymes catalyzing the formation of H2S are mainly CBS, CSE, and 3-MST, and the key enzymes for SO2 production are AAT1 and AAT2. Endogenous NO is produced from L-arginine under catalysis of three isoforms of NOS (eNOS, iNOS, and nNOS). HO-mediated heme catabolism is the main source of endogenous CO. These four gasotransmitters play important physiological and pathophysiological roles in mammalian cardiovascular, nervous, gastrointestinal, respiratory, and immune systems. The similarity among these four gasotransmitters can be seen from the same and/or shared signals. With many studies on the biological effects of gasotransmitters on multiple systems, the interaction among H2S and other gasotransmitters has been gradually explored. H2S not only interacts with NO to form nitroxyl (HNO), but also regulates the HO/CO and AAT/SO2 pathways. Here, we review the biosynthesis and metabolism of the gasotransmitters in mammals, as well as the known complicated interactions among H2S and other gasotransmitters (NO, CO, and SO2) and their effects on various aspects of cardiovascular physiology and pathophysiology, such as vascular tension, angiogenesis, heart contractility, and cardiac protection.
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Affiliation(s)
- Ya-Qian Huang
- Department of Pediatrics, Peking University First Hospital, Beijing, China
| | - Hong-Fang Jin
- Department of Pediatrics, Peking University First Hospital, Beijing, China.
| | - Heng Zhang
- Department of Endocrinology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Chao-Shu Tang
- Department of Physiology and Pathophysiology, Peking University Health Science Centre, Beijing, China
| | - Jun-Bao Du
- Department of Pediatrics, Peking University First Hospital, Beijing, China.
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Sun HJ, Wu ZY, Cao L, Zhu MY, Nie XW, Huang DJ, Sun MT, Bian JS. Role of nitroxyl (HNO) in cardiovascular system: From biochemistry to pharmacology. Pharmacol Res 2020; 159:104961. [DOI: 10.1016/j.phrs.2020.104961] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/16/2020] [Accepted: 05/24/2020] [Indexed: 12/12/2022]
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Cardiovascular Therapeutic Potential of the Redox Siblings, Nitric Oxide (NO•) and Nitroxyl (HNO), in the Setting of Reactive Oxygen Species Dysregulation. Handb Exp Pharmacol 2020; 264:311-337. [PMID: 32813078 DOI: 10.1007/164_2020_389] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Reactive oxygen species (ROS) dysregulation is a hallmark of cardiovascular disease, characterised by an imbalance in the synthesis and removal of ROS. ROS such as superoxide (•O2-), hydrogen peroxide (H2O2), hydroxyl (OH•) and peroxynitrite (ONOO-) have a marked impact on cardiovascular function, contributing to the vascular impairment and cardiac dysfunction associated with diseases such as angina, hypertension, diabetes and heart failure. Central to the vascular dysfunction is a reduction in bioavailability and/or physiological effects of vasoprotective nitric oxide (NO•), leading to vasoconstriction, inflammation and vascular remodelling. In a cardiac context, increased ROS generation can also lead to modification of key proteins involved in cardiac contractility. Whilst playing a key role in the pathogenesis of cardiovascular disease, ROS dysregulation also limits the clinical efficacy of current therapies, such as nitrosovasodilators. As such, alternate therapies are sought. This review will discuss the impact of ROS dysregulation on the therapeutic utility of NO• and its redox sibling, nitroxyl (HNO). Both nitric oxide (NO) and nitroxyl (HNO) donors signal through soluble guanylyl cyclase (sGC). NO binds to the Fe(II) form of sGC and nitroxyl possibly to both sGC heme and thiol groups. In the vasculature, nitroxyl can also signal through voltage-dependent (Kv) and ATP-sensitive (KATP) K+ channels as well as calcitonin gene-related peptide (CGRP). In the heart, HNO directly targets critical thiols to increase myocardial contractility, an effect not seen with NO. The qualitative effects via elevation of cGMP are similar, i.e. lusitropic in the heart and inhibitory on vasoconstriction, inflammation, aggregation and vascular remodelling. Of pathophysiological significance is the fact the efficacy of NO donors is impaired by ROS, e.g. through chemical scavenging of NO, to generate reactive nitrogen oxide species (RNOS), whilst nitroxyl is apparently not.
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12
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J. Hossen M, Sarkar SD, Uddin MM, Roy CK, Azam MS. Mussel‐Inspired Adhesive Nano‐Filler for Strengthening Polyacrylamide Hydrogel. ChemistrySelect 2020. [DOI: 10.1002/slct.202001632] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Md. J. Hossen
- Department of ChemistryBangladesh University of Engineering and Technology (BUET) Dhaka 1000 Bangladesh
- Department of ChemistryBangladesh University of Textiles (BUTEX) Dhaka 1208 Bangladesh
| | - Stephen D. Sarkar
- Department of ChemistryBangladesh University of Engineering and Technology (BUET) Dhaka 1000 Bangladesh
| | - Md. M. Uddin
- Department of ChemistryBangladesh University of Engineering and Technology (BUET) Dhaka 1000 Bangladesh
| | - Chanchal K. Roy
- Department of ChemistryBangladesh University of Engineering and Technology (BUET) Dhaka 1000 Bangladesh
| | - Md. S. Azam
- Department of ChemistryBangladesh University of Engineering and Technology (BUET) Dhaka 1000 Bangladesh
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Li B, Ming Y, Liu Y, Xing H, Fu R, Li Z, Ni R, Li L, Duan D, Xu J, Li C, Xiang M, Song H, Chen J. Recent Developments in Pharmacological Effect, Mechanism and Application Prospect of Diazeniumdiolates. Front Pharmacol 2020; 11:923. [PMID: 32655397 PMCID: PMC7324472 DOI: 10.3389/fphar.2020.00923] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 06/08/2020] [Indexed: 12/20/2022] Open
Abstract
Nitric oxide (NO) is a simple structured and unstable free radical molecule, which participates in the regulation of many pathophysiological processes. It functions both as a second messenger and as an endogenous neurotransmitter. Diazeniumdiolates (NONOates) are a series of compounds containing the functional parent nuclear structure of [N(O)NO]-, which are the most widely studied NO donors. NONOates are unstable and easy to release NO in physiological conditions. The biomedical applications and drug development of NO donor have attracted the scientists' attention in recent years. In this review, recent advances in NONOates research are highlighted in terms of chemical structures, molecular characteristics, pharmacological effects, and biomedical application prospects.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | - Jianhong Chen
- Department of Pharmacy, Daping Hospital, Army Medical University, Chongqing, China
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Zheng Y, Xue C, Chen H, He C, Wang Q. Low-Temperature Adaptation of the Snow Alga Chlamydomonas nivalis Is Associated With the Photosynthetic System Regulatory Process. Front Microbiol 2020; 11:1233. [PMID: 32587584 PMCID: PMC7297934 DOI: 10.3389/fmicb.2020.01233] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 05/14/2020] [Indexed: 12/28/2022] Open
Abstract
The alga Chlamydomonas nivalis thrives in polar snow fields and on high-altitude mountain tops, and contributes significantly on primary production in the polar regions, however, the mechanisms underlying this adaptation to low temperatures are unknown. Here, we compared the growth, photosynthetic activity, membrane lipid peroxidation, and antioxidant activity of C. nivalis with those of the model alga C. reinhardtii, under grow temperature and low temperatures. C. nivalis maintained its photosynthetic activity in these conditions by reducing the light-harvesting ability of photosystem II and enhancing the cyclic electron transfer around photosystem I, both of which limited damage to the photosystem from excess light energy and resulted in ATP production, supporting cellular growth and other physiological processes. Furthermore, the increased cyclic electron transfer rate, carotenoid content, and antioxidant enzyme activities jointly regulated the reactive oxygen species levels in C. nivalis, enabling recovery from excess excitation energy and reduced photooxidative damage to the cell. Therefore, we propose a model in which adaptive mechanisms related to photosynthetic regulation promote the survival and even blooming of C. nivalis under polar environment, suggesting that C. nivalis can provide organic carbon sources as an important primary producer for other surrounding life in the polar regions for maintaining ecosystem.
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Affiliation(s)
- Yanli Zheng
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Chunling Xue
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Hui Chen
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China
| | - Chenliu He
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Qiang Wang
- State Key Laboratory of Crop Stress Adaptation and Improvement, School of Life Sciences, Henan University, Kaifeng, China.,Innovation Academy for Seed Design, Chinese Academy of Sciences, Wuhan, China
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15
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Velagic A, Qin C, Woodman OL, Horowitz JD, Ritchie RH, Kemp-Harper BK. Nitroxyl: A Novel Strategy to Circumvent Diabetes Associated Impairments in Nitric Oxide Signaling. Front Pharmacol 2020; 11:727. [PMID: 32508651 PMCID: PMC7248192 DOI: 10.3389/fphar.2020.00727] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 05/01/2020] [Indexed: 12/19/2022] Open
Abstract
Diabetes is associated with an increased mortality risk due to cardiovascular complications. Hyperglycemia-induced oxidative stress underlies these complications, leading to an impairment in endogenous nitric oxide (NO•) generation, together with reductions in NO• bioavailability and NO• responsiveness in the vasculature, platelets and myocardium. The latter impairment of responsiveness to NO•, termed NO• resistance, compromises the ability of traditional NO•-based therapeutics to improve hemodynamic status during diabetes-associated cardiovascular emergencies, such as acute myocardial infarction. Whilst a number of agents can ameliorate (e.g. angiotensin converting enzyme [ACE] inhibitors, perhexiline, statins and insulin) or circumvent (e.g. nitrite and sGC activators) NO• resistance, nitroxyl (HNO) donors offer a novel opportunity to circumvent NO• resistance in diabetes. With a suite of vasoprotective properties and an ability to enhance cardiac inotropic and lusitropic responses, coupled with preserved efficacy in the setting of oxidative stress, HNO donors have intact therapeutic potential in the face of diminished NO• signaling. This review explores the major mechanisms by which hyperglycemia-induced oxidative stress drives NO• resistance, and the therapeutic potential of HNO donors to circumvent this to treat cardiovascular complications in type 2 diabetes mellitus.
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Affiliation(s)
- Anida Velagic
- Heart Failure Pharmacology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
- Central Clinical School, Monash University, Melbourne, VIC, Australia
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, VIC, Australia
| | - Chengxue Qin
- Heart Failure Pharmacology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
- Central Clinical School, Monash University, Melbourne, VIC, Australia
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, VIC, Australia
| | - Owen L. Woodman
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, VIC, Australia
| | - John D. Horowitz
- Basil Hetzel Institute, Queen Elizabeth Hospital, University of Adelaide, Adelaide, SA, Australia
| | - Rebecca H. Ritchie
- Heart Failure Pharmacology, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia
- Central Clinical School, Monash University, Melbourne, VIC, Australia
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Melbourne, VIC, Australia
- Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia
| | - Barbara K. Kemp-Harper
- Department of Pharmacology, Biomedicine Discovery Institute, Monash University, Melbourne, VIC, Australia
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16
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High level of reactive oxygen species inhibits triacylglycerols accumulation in Chlamydomonas reinhardtii. ALGAL RES 2019. [DOI: 10.1016/j.algal.2018.101400] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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17
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Bhuyan MM, Okabe H, Hidaka Y, Dafader NC, Rahman N, Hara K. Synthesis of pectin-N, N-dimethyl acrylamide hydrogel by gamma radiation and application in drug delivery (in vitro). JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2018. [DOI: 10.1080/10601325.2018.1442177] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Md Murshed Bhuyan
- Research Institute of Environment for Sustainability, Faculty of Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan
| | - Hirotaka Okabe
- Research Institute of Environment for Sustainability, Faculty of Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan
| | - Yoshiki Hidaka
- Research Institute of Environment for Sustainability, Faculty of Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan
| | - Nirmal Chandra Dafader
- Nuclear and Radiation Chemistry Division, Institute of Nuclear Science and Technology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh
| | - Nazia Rahman
- Nuclear and Radiation Chemistry Division, Institute of Nuclear Science and Technology, Bangladesh Atomic Energy Commission, Dhaka, Bangladesh
| | - Kazuhiro Hara
- Research Institute of Environment for Sustainability, Faculty of Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan
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18
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Oliveira C, Benfeito S, Fernandes C, Cagide F, Silva T, Borges F. NO and HNO donors, nitrones, and nitroxides: Past, present, and future. Med Res Rev 2017; 38:1159-1187. [PMID: 29095519 DOI: 10.1002/med.21461] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 06/26/2017] [Accepted: 06/28/2017] [Indexed: 12/18/2022]
Abstract
The biological effects attributed to nitric oxide (• NO) and nitroxyl (HNO) have been extensively studied, propelling their array of putative clinical applications beyond cardiovascular disorders toward other age-related diseases, like cancer and neurodegenerative diseases. In this context, the unique properties and reactivity of the N-O bond enabled the development of several classes of compounds with potential clinical interest, among which • NO and HNO donors, nitrones, and nitroxides are of particular importance. Although primarily studied for their application as cardioprotective agents and/or molecular probes for radical detection, continuous efforts have unveiled a wide range of pharmacological activities and, ultimately, therapeutic applications. These efforts are of particular significance for diseases in which oxidative stress plays a key pathogenic role, as shown by a growing volume of in vitro and in vivo preclinical data. Although in its early stages, these efforts may provide valuable guidelines for the development of new and effective N-O-based drugs for age-related disorders. In this report, we review recent advances in the chemistry of NO and HNO donors, nitrones, and nitroxides and discuss its pharmacological significance and potential therapeutic application.
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Affiliation(s)
- Catarina Oliveira
- CIQUP/Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Sofia Benfeito
- CIQUP/Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Carlos Fernandes
- CIQUP/Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Fernando Cagide
- CIQUP/Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Tiago Silva
- CIQUP/Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Fernanda Borges
- CIQUP/Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
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19
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Albaghdadi MS, Yang J, Brown JH, Mansukhani NA, Ameer GA, Kibbe MR. A Tailorable In-Situ Light-Activated Biodegradable Vascular Scaffold. ADVANCED MATERIALS TECHNOLOGIES 2017; 2:1600243. [PMID: 29578542 PMCID: PMC5860681 DOI: 10.1002/admt.201600243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Biodegradable vascular scaffolds (BVS) are novel treatments for obstructive atherosclerotic cardiovascular disease that have been developed to overcome the limitations of traditional metallic drug-eluting stents (DES). The mechanical properties of bioabsorbable polymers used for the production of novel BVS are a key consideration for the clinical translation of this emerging technology. Herein, we describe the engineering of an in situ light-activated vascular scaffold (ILVS) comprised of a biodegradable citric acid-based elastomeric polymer, referred to as methacrylated poly-diol citrate (mPDC), and a diazeniumdiolate chitosan nitric oxide donor (chitoNO). In vitro studies demonstrate that the mechanical properties of the ILVS can be tailored to meet or exceed those of commercially available self-expanding bare metal stents (BMS). The radial compression strength of the ILVS is higher than that of a BMS despite undergoing degradation at physiologic conditions for 7 months. ILVS containing chitoNO provides sustained supraphysiologic levels of NO release. Lastly, ILVS were successfully cast in porcine arteries ex vivo using a custom designed triple balloon catheter, demonstrating translational potential. In conclusion, these data demonstrate the ability of an ILVS to provide tunable mechanical properties and drug-delivery capabilities for the vasculature, and thereby support mPDC as a promising material for the development of novel BVS platforms.
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Affiliation(s)
- Mazen S. Albaghdadi
- Department of Medicine, Division of Cardiology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago Illinois
| | - Jian Yang
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois
| | - Jessica H. Brown
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago Illinois
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Neel A. Mansukhani
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago Illinois
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Guillermo A. Ameer
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago Illinois
- Biomedical Engineering Department, Northwestern University, Evanston, Illinois
- Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
- International Institute for Nanotechnology, Northwestern University, Evanston, Illinois
| | - Melina R. Kibbe
- Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago Illinois
- Department of Surgery, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
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20
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Chen H, Zheng Y, Zhan J, He C, Wang Q. Comparative metabolic profiling of the lipid-producing green microalga Chlorella reveals that nitrogen and carbon metabolic pathways contribute to lipid metabolism. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:153. [PMID: 28630648 PMCID: PMC5471736 DOI: 10.1186/s13068-017-0839-4] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Microalgae are a promising feedstock for biofuel production. Microalgal metabolic pathways are heavily influenced by environmental factors. For instance, lipid metabolism can be induced by nitrogen-limiting conditions. However, the underlying mechanisms of lipid biosynthesis are unclear. In this study, we analyzed the global metabolic profiles of three genetically closely related Chlorella strains (C1, C2, and C3) with significant differences in lipid productivity to identify the contributions of key metabolic pathways to lipid metabolism. We found that nitrogen obtained from amino acid catabolism was assimilated via the glutamate-glutamine pathway and then stored as amino acids and intermediate molecules (particularly proline, alanine, arginine, succinate, and gamma-aminobutyrate) via the corresponding metabolic pathways, which led to carbon-nitrogen disequilibrium. Excess carbon obtained from photosynthesis or glycolysis was re-distributed into carbon-containing compounds, such as glucose-6-phosphate, fructose-6-phosphate, phosphoenolpyruvate, lactate, citrate, 3-hydroxybutyrate, and leucine, and then diverted into lipid metabolism for the production of storage lipids via the gamma-aminobutyrate pathway, glycolysis, and the tricarboxylic acid cycle. These results were substantiated in the model green alga Chlamydomonas reinhardtii by analyzing various mutants deficient in glutamate synthase/NADH-dependent, glutamate synthase/Fd-dependent, glutamine synthetase, aspartate aminotransferase, alanine aminotransferase, pyruvate kinase, and citrate synthase. Our study suggests that not only carbon but also nitrogen assimilation and distribution pathways contribute to lipid biosynthesis. Furthermore, these findings may facilitate genetic engineering efforts to enhance microalgal biofuel production.
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Affiliation(s)
- Hui Chen
- Key Laboratory of Algal Biology, Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, 430072 Hubei China
| | - Yanli Zheng
- Key Laboratory of Algal Biology, Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, 430072 Hubei China
- University of the Chinese Academy of Sciences, Beijing, 100039 China
| | - Jiao Zhan
- Key Laboratory of Algal Biology, Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, 430072 Hubei China
| | - Chenliu He
- Key Laboratory of Algal Biology, Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, 430072 Hubei China
| | - Qiang Wang
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, The Chinese Academy of Sciences, Wuhan, 430072 Hubei China
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21
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Kemp-Harper BK, Horowitz JD, Ritchie RH. Therapeutic Potential of Nitroxyl (HNO) Donors in the Management of Acute Decompensated Heart Failure. Drugs 2016; 76:1337-48. [DOI: 10.1007/s40265-016-0631-y] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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22
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Nitroxyl (HNO) reduces endothelial and monocyte activation and promotes M2 macrophage polarization. Clin Sci (Lond) 2016; 130:1629-40. [DOI: 10.1042/cs20160097] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 05/26/2016] [Indexed: 12/21/2022]
Abstract
In the present study, the effect of nitroxyl anion (HNO) donors on factors that precede atherosclerosis was examined. They reduced endothelial cell inflammation and monocyte activation and as such may be an effective treatment for coronary artery disease.
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23
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Zhou Y, Wu Z, Cao X, Ding L, Wen Z, Bian JS. HNO suppresses LPS-induced inflammation in BV-2 microglial cells via inhibition of NF-κB and p38 MAPK pathways. Pharmacol Res 2016; 111:885-895. [PMID: 27507578 DOI: 10.1016/j.phrs.2016.08.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 08/01/2016] [Accepted: 08/04/2016] [Indexed: 11/26/2022]
Abstract
Both hydrogen sulfide (H2S) and nitric oxide (NO) are important gaseous mediators. We and others previously reported that these two gases react with each other to generate a new mediator, nitroxyl (HNO), and regulate cardiovascular functions. In this study, we demonstrated for the first time that the interaction between the two gases also existed in microglia. The biological functions of HNO in microglial cells were further studied with Angeli's salt (AS), an HNO donor. We found that AS attenuated lipopolysaccharide (LPS)-evoked production of reactive oxygen species (ROS) and pro-inflammatory cytokines (e.g. IL-1β and TNFα) through downregulating the expression of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2). HNO significantly reduced the phosphorylation of p38 mitogen-activated protein kinase (MAPK) and the activation of nuclear factor-κB (NF-κB) through suppression of phosphorylation p65 and IκBα. The above effects were abolished by l-cysteine, an HNO scavenger, but were not mimicked by nitrite, another product of AS during generating HNO. A Cys-179-to-Ala mutation in inhibitory κB kinase β (IKKβ) mimicked the effect of HNO on LPS-induced NF-κB activation. Interestingly, AS abolished the inflammation in cells overexpressing WT-IKKβ, but had no significant effect in cells overexpressing C179A-IKKβ. These data suggest that HNO may act on C179 to prevent IKKβ-dependent inflammation. Taken together, our data demonstrated for the first time that H2S interacts with NO to generate HNO in microglial cells. HNO produces anti-inflammatory effects through suppressing the IKKβ dependent NF-κB activation and p38 MAPK pathways.
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Affiliation(s)
- Yebo Zhou
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117600, Singapore
| | - Zhiyuan Wu
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117600, Singapore
| | - Xu Cao
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117600, Singapore
| | - Lei Ding
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117600, Singapore
| | - ZhengShun Wen
- Zhejiang Provincial Engineering Technology Research Center of Marine Biomedical Products, Food and Pharmacy College, Zhejiang Ocean University, Zhoushan 316000, China
| | - Jin-Song Bian
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, 117600, Singapore.
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24
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Bahnson ESM, Havelka GE, Koo NC, Jiang Q, Kibbe MR. Periadventitial adipose tissue modulates the effect of PROLI/NO on neointimal hyperplasia. J Surg Res 2016; 205:440-445. [PMID: 27664894 DOI: 10.1016/j.jss.2016.06.074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 05/20/2016] [Accepted: 06/27/2016] [Indexed: 01/08/2023]
Abstract
BACKGROUND Periadventitial delivery of nitric oxide (NO) inhibits neointimal hyperplasia; however, the effect of periadventitial adipose tissue on the efficacy of NO at inhibiting neointimal hyperplasia has not been studied. The aim of our study was to assess the effect of NO in the presence and absence of periadventitial adipose tissue. We hypothesized that removal of periadventitial adipose tissue will increase neointimal formation and that NO will be more effective at inhibiting neointimal hyperplasia. METHODS The effect of NO on 3T3 fibroblasts, adventitial fibroblast (AF), and vascular smooth muscle cell (VSMC) proliferation was assessed by (3)H-thymidine incorporation in adipocyte-conditioned or regular media. The rat carotid artery balloon injury model was performed on male Sprague-Dawley rats. Before balloon injury, periadventitial adipose tissue was removed (excised model) or remained intact (intact model). Treatment groups included injury or injury with periadventitial application of PROLI/NO. Adiponectin receptor (AR) levels were assessed via immunofluorescence. RESULTS Adipocyte-conditioned media had an antiproliferative effect on 3T3 and AF and a proproliferative effect on VSMC in vitro. Interestingly, NO was less effective at inhibiting 3T3 and AF proliferation and more effective at inhibiting VSMC proliferation in adipocyte-conditioned media. In vivo, the excised group showed increased neointimal hyperplasia 2 wk after surgery compared with the intact group. NO reduced neointimal hyperplasia to a greater extent in the excised group compared with the intact group. Although NO inhibited or had no impact on AR levels in the intact group, NO increased AR levels in media and adventitia of the excised group. CONCLUSIONS These data show that periadventitial adipose tissue plays a role in regulating the arterial injury response and the efficacy of NO treatment in the vasculature.
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Affiliation(s)
- Edward S M Bahnson
- Division of Vascular Surgery, Northwestern University, Chicago, Illinois; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois
| | - George E Havelka
- Division of Vascular Surgery, Northwestern University, Chicago, Illinois; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois
| | - Nathaniel C Koo
- Division of Vascular Surgery, Northwestern University, Chicago, Illinois; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois
| | - Qun Jiang
- Division of Vascular Surgery, Northwestern University, Chicago, Illinois; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois
| | - Melina R Kibbe
- Division of Vascular Surgery, Northwestern University, Chicago, Illinois; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, Illinois; Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois.
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25
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Bahnson ESM, Kassam HA, Moyer TJ, Jiang W, Morgan CE, Vercammen JM, Jiang Q, Flynn ME, Stupp SI, Kibbe MR. Targeted Nitric Oxide Delivery by Supramolecular Nanofibers for the Prevention of Restenosis After Arterial Injury. Antioxid Redox Signal 2016; 24:401-18. [PMID: 26593400 PMCID: PMC4782035 DOI: 10.1089/ars.2015.6363] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
AIMS Cardiovascular interventions continue to fail as a result of arterial restenosis secondary to neointimal hyperplasia. We sought to develop and evaluate a systemically delivered nanostructure targeted to the site of arterial injury to prevent neointimal hyperplasia. Nanostructures were based on self-assembling biodegradable molecules known as peptide amphiphiles. The targeting motif was a collagen-binding peptide, and the therapeutic moiety was added by S-nitrosylation of cysteine residues. RESULTS Structure of the nanofibers was characterized by transmission electron microscopy and small-angle X-ray scattering. S-nitrosylation was confirmed by mass spectrometry, and nitric oxide (NO) release was assessed electrochemically and by chemiluminescent detection. The balloon carotid artery injury model was performed on 10-week-old male Sprague-Dawley rats. Immediately after injury, nanofibers were administered systemically via tail vein injection. S-nitrosylated (S-nitrosyl [SNO])-targeted nanofibers significantly reduced neointimal hyperplasia 2 weeks and 7 months following balloon angioplasty, with no change in inflammation. INNOVATION This is the first time that an S-nitrosothiol (RSNO)-based therapeutic was shown to have targeted local effects after systemic administration. This approach, combining supramolecular nanostructures with a therapeutic NO-based payload and a targeting moiety, overcomes the limitations of delivering NO to a site of interest, avoiding undesirable systemic side effects. CONCLUSION We successfully synthesized and characterized an RSNO-based therapy that when administered systemically, targets directly to the site of vascular injury. By integrating therapeutic and targeting chemistries, these targeted SNO nanofibers provided durable inhibition of neointimal hyperplasia in vivo and show great potential as a platform to treat cardiovascular diseases.
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Affiliation(s)
- Edward S M Bahnson
- 1 Simpson Querrey Institute for BioNanotechnology, Northwestern University , Chicago, Illinois.,2 Department of Surgery, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Hussein A Kassam
- 1 Simpson Querrey Institute for BioNanotechnology, Northwestern University , Chicago, Illinois.,2 Department of Surgery, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Tyson J Moyer
- 1 Simpson Querrey Institute for BioNanotechnology, Northwestern University , Chicago, Illinois.,3 Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois
| | - Wulin Jiang
- 1 Simpson Querrey Institute for BioNanotechnology, Northwestern University , Chicago, Illinois.,2 Department of Surgery, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Courtney E Morgan
- 1 Simpson Querrey Institute for BioNanotechnology, Northwestern University , Chicago, Illinois.,2 Department of Surgery, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Janet M Vercammen
- 1 Simpson Querrey Institute for BioNanotechnology, Northwestern University , Chicago, Illinois.,2 Department of Surgery, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Qun Jiang
- 1 Simpson Querrey Institute for BioNanotechnology, Northwestern University , Chicago, Illinois.,2 Department of Surgery, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Megan E Flynn
- 1 Simpson Querrey Institute for BioNanotechnology, Northwestern University , Chicago, Illinois.,2 Department of Surgery, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
| | - Samuel I Stupp
- 1 Simpson Querrey Institute for BioNanotechnology, Northwestern University , Chicago, Illinois.,3 Department of Materials Science and Engineering, Northwestern University , Evanston, Illinois.,4 Department of Chemistry, Northwestern University , Evanston, Illinois.,5 Department of Medicine, Feinberg School of Medicine, Northwestern University , Chicago, Illinois.,6 Department of Biomedical Engineering, Northwestern University , Evanston, Illinois
| | - Melina R Kibbe
- 1 Simpson Querrey Institute for BioNanotechnology, Northwestern University , Chicago, Illinois.,2 Department of Surgery, Feinberg School of Medicine, Northwestern University , Chicago, Illinois
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26
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HNO/Thiol Biology as a Therapeutic Target. OXIDATIVE STRESS IN APPLIED BASIC RESEARCH AND CLINICAL PRACTICE 2016. [DOI: 10.1007/978-3-319-30705-3_14] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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27
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Bahnson ESM, Vavra AK, Flynn ME, Vercammen JM, Jiang Q, Schwartz AR, Kibbe MR. Long-term effect of PROLI/NO on cellular proliferation and phenotype after arterial injury. Free Radic Biol Med 2016; 90:272-86. [PMID: 26627935 PMCID: PMC4698201 DOI: 10.1016/j.freeradbiomed.2015.11.027] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 11/20/2015] [Accepted: 11/23/2015] [Indexed: 10/22/2022]
Abstract
Vascular interventions are associated with high failure rates from restenosis secondary to negative remodeling and neointimal hyperplasia. Periadventitial delivery of nitric oxide (NO) inhibits neointimal hyperplasia, preserving lumen patency. With the development of new localized delivery vehicles, NO-based therapies remain a promising therapeutic avenue for the prevention of restenosis. While the time course of events during neointimal development has been well established, a full characterization of the impact of NO donors on the cells that comprise the arterial wall has not been performed. Thus, the aim of our study was to perform a detailed assessment of proliferation, cellularity, inflammation, and phenotypic cellular modulation in injured arteries treated with the short-lived NO donor, PROLI/NO. PROLI/NO provided durable inhibition of neointimal hyperplasia for 6 months after arterial injury. PROLI/NO inhibited proliferation and cellularity in the media and intima at all of the time points studied. However, PROLI/NO caused an increase in adventitial proliferation at 2 weeks, resulting in increased cellularity at 2 and 8 weeks compared to injury alone. PROLI/NO promoted local protein S-nitrosation and increased local tyrosine nitration, without measurable systemic effects. PROLI/NO predominantly inhibited contractile smooth muscle cells in the intima and media, and had little to no effect on vascular smooth muscle cells or myofibroblasts in the adventitia. Finally, PROLI/NO caused a delayed and decreased leukocyte infiltration response after injury. Our results show that a short-lived NO donor exerts durable effects on proliferation, phenotype modulation, and inflammation that result in long-term inhibition of neointimal hyperplasia.
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Affiliation(s)
- Edward S M Bahnson
- Division of Vascular Surgery, Northwestern University, Chicago, IL, United States; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, United States
| | - Ashley K Vavra
- Division of Vascular Surgery, Northwestern University, Chicago, IL, United States; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, United States
| | - Megan E Flynn
- Division of Vascular Surgery, Northwestern University, Chicago, IL, United States; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, United States
| | - Janet M Vercammen
- Division of Vascular Surgery, Northwestern University, Chicago, IL, United States; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, United States
| | - Qun Jiang
- Division of Vascular Surgery, Northwestern University, Chicago, IL, United States; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, United States
| | - Amanda R Schwartz
- Division of Vascular Surgery, Northwestern University, Chicago, IL, United States; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, United States
| | - Melina R Kibbe
- Division of Vascular Surgery, Northwestern University, Chicago, IL, United States; Simpson Querrey Institute for BioNanotechnology, Northwestern University, Chicago, IL, United States; Jesse Brown Veterans Affairs Medical Center, Chicago, IL, United States.
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Interaction of Hydrogen Sulfide with Nitric Oxide in the Cardiovascular System. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2016:6904327. [PMID: 26640616 PMCID: PMC4657111 DOI: 10.1155/2016/6904327] [Citation(s) in RCA: 106] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Accepted: 06/21/2015] [Indexed: 01/07/2023]
Abstract
Historically acknowledged as toxic gases, hydrogen sulfide (H2S) and nitric oxide (NO) are now recognized as the predominant members of a new family of signaling molecules, “gasotransmitters” in mammals. While H2S is biosynthesized by three constitutively expressed enzymes (CBS, CSE, and 3-MST) from L-cysteine and homocysteine, NO is generated endogenously from L-arginine by the action of various isoforms of NOS. Both gases have been transpired as the key and independent regulators of many physiological functions in mammalian cardiovascular, nervous, gastrointestinal, respiratory, and immune systems. The analogy between these two gasotransmitters is evident not only from their paracrine mode of signaling, but also from the identical and/or shared signaling transduction pathways. With the plethora of research in the pathophysiological role of gasotransmitters in various systems, the existence of interplay between these gases is being widely accepted. Chemical interaction between NO and H2S may generate nitroxyl (HNO), which plays a specific effective role within the cardiovascular system. In this review article, we have attempted to provide current understanding of the individual and interactive roles of H2S and NO signaling in mammalian cardiovascular system, focusing particularly on heart contractility, cardioprotection, vascular tone, angiogenesis, and oxidative stress.
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Ca(2+)-regulated cyclic electron flow supplies ATP for nitrogen starvation-induced lipid biosynthesis in green alga. Sci Rep 2015; 5:15117. [PMID: 26450399 PMCID: PMC4598854 DOI: 10.1038/srep15117] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 09/16/2015] [Indexed: 02/07/2023] Open
Abstract
We previously showed that both the linear photosynthetic electron transportation rate and the respiration rate dropped significantly during N starvation-induced neutral lipid accumulation in an oil-producing microalga, Chlorella sorokiniana, and proposed a possible role for cyclic electron flow (CEF) in ATP supply. In this study, we further exploited this hypothesis in both Chlorella sorokiniana C3 and the model green alga Chlamydomonas. We found that both the rate of CEF around photosystem I and the activity of thylakoid membrane-located ATP synthetase increased significantly during N starvation to drive ATP production. Furthermore, we demonstrated that the Chlamydomonas mutant pgrl1, which is deficient in PGRL1-mediated CEF, accumulated less neutral lipids and had reduced rates of CEF under N starvation. Further analysis revealed that Ca(2+) signaling regulates N starvation-induced neutral lipid biosynthesis in Chlamydomonas by increasing calmodulin activity and boosting the expression of the calcium sensor protein that regulates Pgrl1-mediated CEF. Thus, Ca(2+)-regulated CEF supplies ATP for N starvation-induced lipid biosynthesis in green alga. The increased CEF may re-equilibrate the ATP/NADPH balance and recycle excess light energy in photosystems to prevent photooxidative damage, suggesting Ca(2+)-regulated CEF also played a key role in protecting and sustaining photosystems.
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Abstract
The loss of contractile function is a hallmark of heart failure. Although increasing intracellular Ca(2+) is a possible strategy for improving contraction, current inotropic agents that achieve this by raising intracellular cAMP levels, such as β-agonists and phosphodiesterase inhibitors, are generally deleterious when administered as long-term therapy due to arrhythmia and myocardial damage. Nitroxyl donors have been shown to improve cardiac function in normal and failing dogs, and in isolated cardiomyocytes they increase fractional shortening and Ca(2+) transients, independently from cAMP/PKA or cGMP/PKG signaling. Instead, nitroxyl targets cysteines in the EC-coupling machinery and myofilament proteins, reversibly modifying them to enhance Ca(2+) handling and myofilament Ca(2+) sensitivity. Phase I-IIa trials with CXL-1020, a novel pure HNO donor, reported declines in left and right heart filling pressures and systemic vascular resistance, and increased cardiac output and stroke volume index. These findings support the concept of nitroxyl donors as attractive agents for the treatment of acute decompensated heart failure.
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Gregory EK, Webb AR, Vercammen JM, Flynn ME, Ameer GA, Kibbe MR. Periadventitial atRA citrate-based polyester membranes reduce neointimal hyperplasia and restenosis after carotid injury in rats. Am J Physiol Heart Circ Physiol 2014; 307:H1419-29. [PMID: 25239800 DOI: 10.1152/ajpheart.00914.2013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Oral all-trans retinoic acid (atRA) has been shown to reduce the formation of neointimal hyperplasia; however, the dose required was 30 times the chemotherapeutic dose, which already has reported side effects. As neointimal formation is a localized process, new approaches to localized delivery are required. This study assessed whether atRA within a citrate-based polyester, poly(1,8 octanediolcitrate) (POC), perivascular membrane would prevent neointimal hyperplasia following arterial injury. atRA-POC membranes were prepared and characterized for atRA release via high-performance liquid chromatography with mass spectrometry detection. Rat adventitial fibroblasts (AF) and vascular smooth muscle cells (VSMC) were exposed to various concentrations of atRA; proliferation, apoptosis, and necrosis were assessed in vitro. The rat carotid artery balloon injury model was used to evaluate the impact of the atRA-POC membranes on neointimal formation, cell proliferation, apoptosis, macrophage infiltration, and vascular cell adhesion molecule 1 (VCAM-1) expression in vivo. atRA-POC membranes released 12 μg of atRA over 2 wk, with 92% of the release occurring in the first week. At 24 h, atRA (200 μmol/l) inhibited [(3)H]-thymidine incorporation into AF and VSMC by 78% and 72%, respectively (*P = 0.001), with negligible apoptosis or necrosis. Histomorphometry analysis showed that atRA-POC membranes inhibited neointimal formation after balloon injury, with a 56%, 57%, and 50% decrease in the intimal area, intima-to-media area ratio, and percent stenosis, respectively (P = 0.001). atRA-POC membranes had no appreciable effect on apoptosis or proliferation at 2 wk. Regarding biocompatibility, we found a 76% decrease in macrophage infiltration in the intima layer (P < 0.003) in animals treated with atRA-POC membranes, with a coinciding 53% reduction in VCAM-1 staining (P < 0.001). In conclusion, perivascular delivery of atRA inhibited neointimal formation and restenosis. These data suggest that atRA-POC membranes may be suitable as localized therapy to inhibit neointimal hyperplasia following open cardiovascular procedures.
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Affiliation(s)
- Elaine K Gregory
- Division of Vascular Surgery, Northwestern University, Feinberg School of Medicine, Chicago, Illinois; Simpson Querrey Institute for Bionanotechnology, Northwestern University, Chicago, Illinois
| | - Antonio R Webb
- Biomedical Engineering Department, McCormick School of Engineering, Northwestern University, Evanston, Illinois; Simpson Querrey Institute for Bionanotechnology, Northwestern University, Chicago, Illinois; VesselTek Biomedical, Chicago, Illinois; University of Florida, Gainesville, Florida
| | - Janet M Vercammen
- Division of Vascular Surgery, Northwestern University, Feinberg School of Medicine, Chicago, Illinois; Simpson Querrey Institute for Bionanotechnology, Northwestern University, Chicago, Illinois
| | - Megan E Flynn
- Division of Vascular Surgery, Northwestern University, Feinberg School of Medicine, Chicago, Illinois; Simpson Querrey Institute for Bionanotechnology, Northwestern University, Chicago, Illinois
| | - Guillermo A Ameer
- Biomedical Engineering Department, McCormick School of Engineering, Northwestern University, Evanston, Illinois; Simpson Querrey Institute for Bionanotechnology, Northwestern University, Chicago, Illinois
| | - Melina R Kibbe
- Division of Vascular Surgery, Northwestern University, Feinberg School of Medicine, Chicago, Illinois; Simpson Querrey Institute for Bionanotechnology, Northwestern University, Chicago, Illinois;
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Chen H, Zhang Y, He C, Wang Q. Ca2+ signal transduction related to neutral lipid synthesis in an oil-producing green alga Chlorella sp. C2. PLANT & CELL PHYSIOLOGY 2014; 55:634-44. [PMID: 24449653 DOI: 10.1093/pcp/pcu015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Changes in the cytosolic Ca(2+) levels and the role of Ca(2+) signal transduction in neutral lipid synthesis in Chlorella sp. C2 under nitrogen starvation conditions were investigated. The results detected by using the scanning ion-selective electrode technique demonstrate that nitrogen starvation induced significant Ca(2+) influx across the plasma membrane into cells. Ca(2+) fluorescence imaging and flow cytometry were used to estimate the effect of this Ca(2+) influx on the generation of the Ca(2+) signal, and the results showed that the cytosolic Ca(2+) concentration increased transiently and then remained at a stable, high level when the cells were exposed to nitrogen starvation. However, the increase could be inhibited by pre-treatment with the Ca(2+) channel blockers ruthenium red, verapamil and GdCl3, indicating that both the influx of Ca(2+) from the extracellular space via Ca(2+) channels that are localized in the plasma membrane and the release of Ca(2+) from intracellular calcium storage via the internal calcium store were required for the generation and transduction of the Ca(2+) signal. During nitrogen starvation, neutral lipid synthesis in Chlorella sp. C2 in response to stress conditions was also inhibited to differing degrees by pre-treatment with the three Ca(2+) channel blockers, demonstrating the regulation of Ca(2+) via these Ca(2+) channels in neutral lipid synthesis. The results suggested that by transduction of extracellular stress signals into the cell and the regulation of the Ca(2+) signal in neutral lipid synthesis, Ca(2+) signal transduction played important roles in the response mechanism of Chlorella sp. C2 to nitrogen starvation.
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Affiliation(s)
- Hui Chen
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, Hubei, China
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33
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Lei J, Vodovotz Y, Tzeng E, Billiar TR. Nitric oxide, a protective molecule in the cardiovascular system. Nitric Oxide 2013; 35:175-85. [DOI: 10.1016/j.niox.2013.09.004] [Citation(s) in RCA: 123] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Revised: 09/02/2013] [Accepted: 09/24/2013] [Indexed: 12/19/2022]
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Zhang YM, Chen H, He CL, Wang Q. Nitrogen starvation induced oxidative stress in an oil-producing green alga Chlorella sorokiniana C3. PLoS One 2013; 8:e69225. [PMID: 23874918 PMCID: PMC3712941 DOI: 10.1371/journal.pone.0069225] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2013] [Accepted: 06/06/2013] [Indexed: 02/04/2023] Open
Abstract
Microalgal lipid is one of the most promising feedstocks for biodiesel production. Chlorella appears to be a particularly good option, and nitrogen (N) starvation is an efficient environmental pressure used to increase lipid accumulation in Chlorella cells. The effects of N starvation of an oil-producing wild microalga, Chlorella sorokiniana C3, on lipid accumulation were investigated using thin layer chromatography (TLC), confocal laser scanning microscopy (CLSM) and flow cytometry (FCM). The results showed that N starvation resulted in lipid accumulation in C. sorokiniana C3 cells, oil droplet (OD) formation and significant lipid accumulation in cells were detected after 2 d and 8 d of N starvation, respectively. During OD formation, reduced photosynthetic rate, respiration rate and photochemistry efficiency accompanied by increased damage to PSII were observed, demonstrated by chlorophyll (Chl) fluorescence, 77K fluorescence and oxygen evolution tests. In the mean time the rate of cyclic electron transportation increased correspondingly to produce more ATP for triacylglycerols (TAGs) synthesis. And 0.5 d was found to be the turning point for the early stress response and acclimation of cells to N starvation. Increased level of membrane peroxidation was also observed during OD formation, and superoxide dismutase (SOD), peroxide dismutase (POD) and catalase (CAT) enzyme activity assays suggested impaired reactive oxygen species (ROS) scavenging ability. Significant neutral lipid accumulation was also observed by artificial oxidative stress induced by H2O2 treatment. These results suggested coupled neutral lipid accumulation and oxidative stress during N starvation in C. sorokiniana C3.
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Affiliation(s)
- Yun-Ming Zhang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Hui Chen
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, China
| | - Chen-Liu He
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, China
| | - Qiang Wang
- Key Laboratory of Algal Biology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, Hubei Province, China
- * E-mail:
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Irvine JC, Ravi RM, Kemp-Harper BK, Widdop RE. Nitroxyl donors retain their depressor effects in hypertension. Am J Physiol Heart Circ Physiol 2013; 305:H939-45. [PMID: 23851276 DOI: 10.1152/ajpheart.00630.2012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nitroxyl (HNO), the redox congener of nitric oxide, has numerous vasoprotective actions including an ability to induce vasodilation and inhibit platelet aggregation. Given HNO is resistant to scavenging by superoxide and does not develop tolerance, we hypothesised that HNO would retain its in vivo vasodilatory action in the setting of hypertension. The in vitro and in vivo vasodilator properties of the HNO donors Angeli's salt (AS) and isopropylamine/NONOate (IPA/NO) were compared with the NO donor diethylamine/NONOate (DEA/NO) in spontaneously hypertensive rats (SHR) and normotensive [Wistar-Kyoto (WKY) rats]. AS (10, 50, and 200 μg/kg), IPA/NO (10, 50, and 200 μg/kg), and DEA/NO (1, 5, and 20 μg/kg) caused dose-dependent depressor responses in conscious WKY rats of similar magnitude. Depressor responses to AS and IPA/NO were significantly attenuated (P < 0.01) after infusion of the HNO scavenger N-acetyl-l-cysteine (NAC), confirming that AS and IPA/NO function as HNO donors in vivo. In contrast, responses to DEA/NO were unchanged following NAC infusion. Depressor responses to AS and IPA/NO in conscious SHR retained their sensitivity to the inhibitory effects of NAC (P < 0.01), yet those to DEA/NO in SHR were significantly (P < 0.05) enhanced following NAC infusion. Importantly, depressor responses to AS, IPA/NO, and DEA/NO were preserved in hypertension and vasorelaxation to AS and DEA/NO, in isolated aorta, unchanged in SHR as compared with WKY rats. This study has shown for the first time that HNO donors exert antihypertensive effects in vivo and may, therefore, offer a therapeutic alternative to traditional nitrovasodilators in the treatment of cardiovascular disorders such as hypertension.
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Affiliation(s)
- Jennifer C Irvine
- Department of Pharmacology, Monash University, Clayton, Victoria, Australia
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Miller AA, Maxwell KF, Chrissobolis S, Bullen ML, Ku JM, Michael De Silva T, Selemidis S, Hooker EU, Drummond GR, Sobey CG, Kemp-Harper BK. Nitroxyl (HNO) suppresses vascular Nox2 oxidase activity. Free Radic Biol Med 2013; 60:264-71. [PMID: 23459072 DOI: 10.1016/j.freeradbiomed.2013.02.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Revised: 02/18/2013] [Accepted: 02/22/2013] [Indexed: 11/19/2022]
Abstract
Nox2 oxidase activity underlies the oxidative stress and vascular dysfunction associated with several vascular-related diseases. We have reported that nitric oxide (NO) decreases reactive oxygen species production by endothelial Nox2. This study tested the hypothesis that nitroxyl (HNO), the redox sibling of NO, also suppresses vascular Nox2 oxidase activity. Specifically, we examined the influence of two well-characterized HNO donors, Angeli's salt and isopropylamine NONOate (IPA/NO), on Nox2-dependent responses to angiotensin II (reactive oxygen species production and vasoconstriction) in mouse cerebral arteries. Angiotensin II (0.1μmol/L)-stimulated superoxide (measured by lucigenin-enhanced chemiluminescence) and hydrogen peroxide (Amplex red fluorescence) levels in cerebral arteries (pooled basilar and middle cerebral (MCA)) from wild-type (WT) mice were ~60% lower (P<0.05) in the presence of either Angeli's salt (1μmol/L) or IPA/NO (1μmol/L). Similarly, phorbyl 12,13-dibutyrate (10μmol/L; Nox2 activator)-stimulated hydrogen peroxide levels were ~40% lower in the presence of IPA/NO (1μmol/L; P<0.05). The ability of IPA/NO to decrease superoxide levels was reversible and abolished by the HNO scavenger l-cysteine (3mmol/L; P<0.05), but was unaffected by hydroxocobalamin (100μmol/L; NO scavenger), ODQ (10μmol/L; soluble guanylyl cyclase (sGC) inhibitor), or Rp-8-pCPT-cGMPS (10μmol/L; cyclic guanosine monophosphate (cGMP)-dependent protein kinase inhibitor). Angiotensin II-stimulated superoxide was substantially less in arteries from Nox2-deficient (Nox2(-/y)) versus WT mice (P<0.05). In contrast to WT, IPA/NO (1μmol/L) had no effect on superoxide levels in arteries from Nox2(-/y) mice. Finally, angiotensin II (1-1000μmol/L)-induced constriction of WT MCA was virtually abolished by IPA/NO (1μmol/L), whereas constrictor responses to either the thromboxane A2 mimetic U46619 (1-100 nmol/L) or high potassium (122.7mmol/L) were unaffected. In conclusion, HNO suppresses vascular Nox2 oxidase activity via a sGC-cGMP-independent pathway. Thus, HNO donors might be useful therapeutic agents to limit and/or prevent Nox2-dependent vascular dysfunction.
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Affiliation(s)
- Alyson A Miller
- Vascular Biology and Immunopharmacology Group, Department of Pharmacology, Monash University, Melbourne, VIC 3800, Australia
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Role of endogenous hydrogen sulfide in neurogenic relaxation of rat corpus cavernosum. Biochem Pharmacol 2012; 83:1261-8. [DOI: 10.1016/j.bcp.2012.01.026] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2011] [Revised: 01/19/2012] [Accepted: 01/19/2012] [Indexed: 12/11/2022]
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38
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Gregory EK, Vavra AK, Moreira ES, Havelka GE, Jiang Q, Lee VR, Van Lith R, Ameer GA, Kibbe MR. Antioxidants modulate the antiproliferative effects of nitric oxide on vascular smooth muscle cells and adventitial fibroblasts by regulating oxidative stress. Am J Surg 2011; 202:536-40. [PMID: 21944289 DOI: 10.1016/j.amjsurg.2011.06.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Revised: 05/26/2011] [Accepted: 06/27/2011] [Indexed: 01/31/2023]
Abstract
BACKGROUND S-nitrosothiols (SNO) release nitric oxide (NO) through interaction with ascorbic acid (AA). However, little is known about their combined effect in the vasculature. The aim of this study was to investigate the effect of AA on SNO-mediated NO release, proliferation, cell cycle progression, cell death, and oxidative stress in vascular cells. METHODS Vascular smooth muscle cells and adventitial fibroblasts harvested from the aortae of Sprague-Dawley rats were treated with AA, ± S-nitrosoglutathione (GSNO), or ± diethylenetriamine NONOate (DETA/NO). NO release, proliferation, cell cycle progression, cell death, and oxidative stress were determined by the Griess reaction, [(3)H]-thymidine incorporation, flow cytometry, trypan blue exclusion, and 5-(and-6)chloromethyl-2',7'dichlorodihydrofluorescein staining, respectively. RESULTS AA increased NO release from GSNO 3-fold (P < .001). GSNO and DETA/NO significantly decreased proliferation, but AA abrogated this effect (P < .05). Mirroring the proliferation data, changes in cell cycle progression induced by GSNO and DETA/NO were reversed by the addition of AA. GSNO- and DETA/NO-mediated increases in oxidative stress were significantly decreased by the addition of AA (P < .001). CONCLUSIONS Despite causing increased NO release from GSNO, AA reduced the antiproliferative and cell cycle effects of GSNO and DETA/NO through the modulation of oxidative stress.
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Affiliation(s)
- Elaine K Gregory
- Division of Vascular Surgery, Northwestern University, Feinberg School of Medicine, Chicago, IL 60611, USA
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Bullen ML, Miller AA, Dharmarajah J, Drummond GR, Sobey CG, Kemp-Harper BK. Vasorelaxant and antiaggregatory actions of the nitroxyl donor isopropylamine NONOate are maintained in hypercholesterolemia. Am J Physiol Heart Circ Physiol 2011; 301:H1405-14. [PMID: 21803947 DOI: 10.1152/ajpheart.00489.2011] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Nitroxyl (HNO) displays pharmacological and therapeutic actions distinct from those of its redox sibling nitric oxide (NO(•)). It remains unclear, however, whether the vasoprotective actions of HNO are preserved in disease. The ability of the HNO donor isopropylamine NONOate (IPA/NO) to induce vasorelaxation, its susceptibility to tolerance development, and antiaggregatory actions were compared with those of a clinically used NO(•) donor, glyceryl trinitrate (GTN), in hypercholesterolemic mice. The vasorelaxant and antiaggregatory properties of IPA/NO and GTN were examined in isolated carotid arteries and washed platelets, respectively, from male C57BL/6J mice [wild-type (WT)] maintained on either a normal diet (WT-ND) or high fat diet (WT-HFD; 7 wk) as well as apolipoprotein E-deficient mice maintained on a HFD (ApoE(-/-)-HFD; 7 wk). In WT-ND mice, IPA/NO (0.1-30 μmol/l) induced concentration-dependent vasorelaxation and inhibition of collagen (30 μg/ml)-stimulated platelet aggregation, which was predominantly soluble guanylyl cyclase/cGMP dependent. Compared with WT-HFD mice, ApoE(-/-)-HFD mice displayed an increase in total plasma cholesterol levels (P < 0.001), vascular (P < 0.05) and platelet (P < 0.05) superoxide (O(2)(·-)) production, and reduced endogenous NO(•) bioavailability (P < 0.001). Vasorelaxant responses to both IPA/NO and GTN were preserved in hypercholesterolemia, whereas vascular tolerance developed to GTN (P < 0.001) but not to IPA/NO. The ability of IPA/NO (3 μmol/l) to inhibit platelet aggregation was preserved in hypercholesterolemia, whereas the actions of GTN (100 μmol/l) were abolished. In conclusion, the vasoprotective effects of IPA/NO were maintained in hypercholesterolemia and, thus, HNO donors may represent future novel treatments for vascular diseases.
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Affiliation(s)
- Michelle L Bullen
- Vascular Biology and Immunopharmacology Group, Department of Pharmacology, Monash University, Clayton, Victoria, Australia
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40
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Tocchetti CG, Stanley BA, Murray CI, Sivakumaran V, Donzelli S, Mancardi D, Pagliaro P, Gao WD, van Eyk J, Kass DA, Wink DA, Paolocci N. Playing with cardiac "redox switches": the "HNO way" to modulate cardiac function. Antioxid Redox Signal 2011; 14:1687-98. [PMID: 21235349 PMCID: PMC3066693 DOI: 10.1089/ars.2010.3859] [Citation(s) in RCA: 91] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The nitric oxide (NO(•)) sibling, nitroxyl or nitrosyl hydride (HNO), is emerging as a molecule whose pharmacological properties include providing functional support to failing hearts. HNO also preconditions myocardial tissue, protecting it against ischemia-reperfusion injury while exerting vascular antiproliferative actions. In this review, HNO's peculiar cardiovascular assets are discussed in light of its unique chemistry that distinguish HNO from NO(•) as well as from reactive oxygen and nitrogen species such as the hydroxyl radical and peroxynitrite. Included here is a discussion of the possible routes of HNO formation in the myocardium and its chemical targets in the heart. HNO has been shown to have positive inotropic/lusitropic effects under normal and congestive heart failure conditions in animal models. The mechanistic intricacies of the beneficial cardiac effects of HNO are examined in cellular models. In contrast to β-receptor/cyclic adenosine monophosphate/protein kinase A-dependent enhancers of myocardial performance, HNO uses its "thiophylic" nature as a vehicle to interact with redox switches such as cysteines, which are located in key components of the cardiac electromechanical machinery ruling myocardial function. Here, we will briefly review new features of HNO's cardiovascular effects that when combined with its positive inotropic/lusitropic action may render HNO donors an attractive addition to the current therapeutic armamentarium for treating patients with acutely decompensated congestive heart failure.
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Affiliation(s)
- Carlo G Tocchetti
- Division of Cardiology, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
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Abstract
Nitroxyl (HNO), the one electron reduced and protonated congener of nitric oxide, is emerging as a novel nitrogen oxide with distinct chemistry and biological actions as compared with its redox sibling. The "thiophilic" nature of HNO underlies many of its unique properties, and attention has been focused on its regulation of cellular function and therapeutic potential, particularly in the treatment of cardiovascular disease. The present Forum issue summarizes the intriguing chemistry and biology of HNO and highlights its impact in the cardiovascular and central nervous systems. Recent advances in the development of new HNO donors and their potential use as tools to study HNO signaling and therapeutic agents are discussed. Evidence is also provided for a role of HNO as a putative, endogenous regulator of vascular function. However, as highlighted in this Forum issue, the development of sensitive methods for HNO detection in a biological system is needed to conclusively prove its in vivo generation. As research expands in this area, it is likely that new targets and pharmacological applications of HNO will be discovered.
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Affiliation(s)
- Barbara K Kemp-Harper
- Vascular Biology and Immunopharmacology Group, Department of Pharmacology, Monash University, Clayton, Victoria, Australia.
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42
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Bullen ML, Miller AA, Andrews KL, Irvine JC, Ritchie RH, Sobey CG, Kemp-Harper BK. Nitroxyl (HNO) as a vasoprotective signaling molecule. Antioxid Redox Signal 2011; 14:1675-86. [PMID: 20673125 DOI: 10.1089/ars.2010.3327] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Nitroxyl (HNO), the one electron reduced and protonated form of nitric oxide (NO(•)), is rapidly emerging as a novel nitrogen oxide with distinct pharmacology and therapeutic advantages over its redox sibling. Whilst the cardioprotective effects of HNO in heart failure have been established, it is apparent that HNO may also confer a number of vasoprotective properties. Like NO(•), HNO induces vasodilatation, inhibits platelet aggregation, and limits vascular smooth muscle cell proliferation. In addition, HNO can be putatively generated within the vasculature, and recent evidence suggests it also serves as an endothelium-derived relaxing factor (EDRF). Significantly, HNO targets signaling pathways distinct from NO(•) with an ability to activate K(V) and K(ATP) channels in resistance arteries, cause coronary vasodilatation in part via release of calcitonin-gene related peptide (CGRP), and exhibits resistance to scavenging by superoxide and vascular tolerance development. As such, HNO synthesis and bioavailability may be preserved and/or enhanced during disease states, in particular those associated with oxidative stress. Moreover, it may compensate, in part, for a loss of NO(•) signaling. Here we explore the vasoprotective actions of HNO and discuss the therapeutic potential of HNO donors in the treatment of vascular dysfunction.
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Affiliation(s)
- Michelle L Bullen
- Vascular Biology and Immunopharmacology Group, Department of Pharmacology, Monash University, Clayton, Victoria, Australia
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