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Solanki K, Rajpoot S, Bezsonov EE, Orekhov AN, Saluja R, Wary A, Axen C, Wary K, Baig MS. The expanding roles of neuronal nitric oxide synthase (NOS1). PeerJ 2022; 10:e13651. [PMID: 35821897 PMCID: PMC9271274 DOI: 10.7717/peerj.13651] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 06/07/2022] [Indexed: 01/17/2023] Open
Abstract
The nitric oxide synthases (NOS; EC 1.14.13.39) use L-arginine as a substrate to produce nitric oxide (NO) as a by-product in the tissue microenvironment. NOS1 represents the predominant NO-producing enzyme highly enriched in the brain and known to mediate multiple functions, ranging from learning and memory development to maintaining synaptic plasticity and neuronal development, Alzheimer's disease (AD), psychiatric disorders and behavioral deficits. However, accumulating evidence indicate both canonical and non-canonical roles of NOS1-derived NO in several other tissues and chronic diseases. A better understanding of NOS1-derived NO signaling, and identification and characterization of NO-metabolites in non-neuronal tissues could become useful in diagnosis and prognosis of diseases associated with NOS1 expression. Continued investigation on the roles of NOS1, therefore, will synthesize new knowledge and aid in the discovery of small molecules which could be used to titrate the activities of NOS1-derived NO signaling and NO-metabolites. Here, we address the significance of NOS1 and its byproduct NO in modifying pathophysiological events, which could be beneficial in understanding both the disease mechanisms and therapeutics.
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Affiliation(s)
- Kundan Solanki
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Simrol, Indore, India
| | - Sajjan Rajpoot
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Simrol, Indore, India
| | - Evgeny E Bezsonov
- Laboratory of Cellular and Molecular Pathology of Cardiovascular System, Federal State Budgetary Scientific Institution "Petrovsky National Research Centre of Surgery", Moscow, Russia.,Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russia.,Department of Biology and General Genetics, I.M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Alexander N Orekhov
- Laboratory of Cellular and Molecular Pathology of Cardiovascular System, Federal State Budgetary Scientific Institution "Petrovsky National Research Centre of Surgery", Moscow, Russia.,Laboratory of Angiopathology, Institute of General Pathology and Pathophysiology, Moscow, Russia
| | - Rohit Saluja
- Department of Biochemistry, All India Institute of Medical Sciences, Bibinagar, Hyderabad, India
| | - Anita Wary
- Pharmacology and Regenerative Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Cassondra Axen
- Pharmacology and Regenerative Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Kishore Wary
- Pharmacology and Regenerative Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Mirza S Baig
- Department of Biosciences and Biomedical Engineering (BSBE), Indian Institute of Technology Indore (IITI), Simrol, Indore, India
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Mastej V, Axen C, Wary A, Minshall RD, Wary KK. A requirement for Krüppel Like Factor-4 in the maintenance of endothelial cell quiescence. Front Cell Dev Biol 2022; 10:1003028. [PMID: 36425528 PMCID: PMC9679496 DOI: 10.3389/fcell.2022.1003028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 08/24/2022] [Indexed: 11/10/2022] Open
Abstract
Rationale and Goal: Endothelial cells (ECs) are quiescent and critical for maintaining homeostatic functions of the mature vascular system, while disruption of quiescence is at the heart of endothelial to mesenchymal transition (EndMT) and tumor angiogenesis. Here, we addressed the hypothesis that KLF4 maintains the EC quiescence. Methods and Results: In ECs, KLF4 bound to KLF2, and the KLF4-transctivation domain (TAD) interacted directly with KLF2. KLF4-depletion increased KLF2 expression, accompanied by phosphorylation of SMAD3, increased expression of alpha-smooth muscle actin (αSMA), VCAM-1, TGF-β1, and ACE2, but decreased VE-cadherin expression. In the absence of Klf4, Klf2 bound to the Klf2-promoter/enhancer region and autoregulated its own expression. Loss of EC-Klf4 in Rosa mT/mG ::Klf4 fl/fl ::Cdh5 CreERT2 engineered mice, increased Klf2 levels and these cells underwent EndMT. Importantly, these mice harboring EndMT was also accompanied by lung inflammation, disruption of lung alveolar architecture, and pulmonary fibrosis. Conclusion: In quiescent ECs, KLF2 and KLF4 partnered to regulate a combinatorial mechanism. The loss of KLF4 disrupted this combinatorial mechanism, thereby upregulating KLF2 as an adaptive response. However, increased KLF2 expression overdrives for the loss of KLF4, giving rise to an EndMT phenotype.
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Affiliation(s)
- Victoria Mastej
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago, IL, United States
| | - Cassondra Axen
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago, IL, United States
| | - Anita Wary
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago, IL, United States
| | - Richard D Minshall
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago, IL, United States
| | - Kishore K Wary
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago, IL, United States
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Baruah J, Chaudhuri S, Mastej V, Axen C, Hitzman R, Ribeiro IMB, Wary KK. Low-Level Nanog Expression in the Regulation of Quiescent Endothelium. Arterioscler Thromb Vasc Biol 2020; 40:2244-2264. [PMID: 32640900 PMCID: PMC7447188 DOI: 10.1161/atvbaha.120.314875] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Supplemental Digital Content is available in the text. Nanog is expressed in adult endothelial cells (ECs) at a low-level, however, its functional significance is not known. The goal of our study was to elucidate the role of Nanog in adult ECs using a genetically engineered mouse model system.
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Affiliation(s)
- Jugajyoti Baruah
- From the Department of Psychiatry, Harvard Medical School, Boston, MA (J.B.).,Angiogenesis and Brain Development Laboratory, Division of Basic Neuroscience, McLean Hospital, Belmont, MA (J.B.)
| | - Suhnrita Chaudhuri
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago (V.M., S.C., C.A., R.H., I.M.B.R., K.K.W.)
| | - Victoria Mastej
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago (V.M., S.C., C.A., R.H., I.M.B.R., K.K.W.)
| | - Cassondra Axen
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago (V.M., S.C., C.A., R.H., I.M.B.R., K.K.W.)
| | - Ryan Hitzman
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago (V.M., S.C., C.A., R.H., I.M.B.R., K.K.W.)
| | - Isabella M B Ribeiro
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago (V.M., S.C., C.A., R.H., I.M.B.R., K.K.W.)
| | - Kishore K Wary
- Department of Pharmacology and Regenerative Medicine, University of Illinois, Chicago (V.M., S.C., C.A., R.H., I.M.B.R., K.K.W.)
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