1
|
Zhang X, Chen Z, Xiong Y, Zhou Q, Zhu LQ, Liu D. The emerging role of nitric oxide in the synaptic dysfunction of vascular dementia. Neural Regen Res 2025; 20:402-415. [PMID: 38819044 PMCID: PMC11317957 DOI: 10.4103/nrr.nrr-d-23-01353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 10/23/2023] [Accepted: 11/30/2023] [Indexed: 06/01/2024] Open
Abstract
With an increase in global aging, the number of people affected by cerebrovascular diseases is also increasing, and the incidence of vascular dementia-closely related to cerebrovascular risk-is increasing at an epidemic rate. However, few therapeutic options exist that can markedly improve the cognitive impairment and prognosis of vascular dementia patients. Similarly in Alzheimer's disease and other neurological disorders, synaptic dysfunction is recognized as the main reason for cognitive decline. Nitric oxide is one of the ubiquitous gaseous cellular messengers involved in multiple physiological and pathological processes of the central nervous system. Recently, nitric oxide has been implicated in regulating synaptic plasticity and plays an important role in the pathogenesis of vascular dementia. This review introduces in detail the emerging role of nitric oxide in physiological and pathological states of vascular dementia and summarizes the diverse effects of nitric oxide on different aspects of synaptic dysfunction, neuroinflammation, oxidative stress, and blood-brain barrier dysfunction that underlie the progress of vascular dementia. Additionally, we propose that targeting the nitric oxide-sGC-cGMP pathway using certain specific approaches may provide a novel therapeutic strategy for vascular dementia.
Collapse
Affiliation(s)
- Xiaorong Zhang
- Department of Pathology, Affiliated Hospital of Jiujiang University, Jiujiang, Jiangxi Province, China
- Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi Province, China
- Center for Cognitive Science and Transdisciplinary Studies, Jiujiang University, Jiangxi Province, China
| | - Zhiying Chen
- Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi Province, China
- Department of Neurology, Affiliated Hospital of Jiujiang University, Jiujiang, Jiangxi Province, China
| | - Yinyi Xiong
- Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi Province, China
- Department of Rehabilitation, Affiliated Hospital of Jiujiang University, Jiujiang, Jiangxi Province, China
| | - Qin Zhou
- Jiujiang Clinical Precision Medicine Research Center, Jiujiang, Jiangxi Province, China
| | - Ling-Qiang Zhu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| | - Dan Liu
- Department of Pathophysiology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei Province, China
| |
Collapse
|
2
|
Vidal CM, Ouyang C, Qi Y, Mendez-Dorantes C, Coblentz A, Alva-Ornelas JA, Stark JM, Seewaldt VL, Ann DK. Arginine regulates HSPA5/BiP translation through ribosome pausing in triple-negative breast cancer cells. Br J Cancer 2023; 129:444-454. [PMID: 37386138 PMCID: PMC10403569 DOI: 10.1038/s41416-023-02322-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 05/17/2023] [Accepted: 06/12/2023] [Indexed: 07/01/2023] Open
Abstract
BACKGROUND Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer with a high mortality rate due to a lack of therapeutic targets. Many TNBC cells are reliant on extracellular arginine for survival and express high levels of binding immunoglobin protein (BiP), a marker of metastasis and endoplasmic reticulum (ER) stress response. METHODS In this study, the effect of arginine shortage on BiP expression in the TNBC cell line MDA-MB-231 was evaluated. Two stable cell lines were generated in MDA-MB-231 cells: the first expressed wild-type BiP, and the second expressed a mutated BiP free of the two arginine pause-site codons, CCU and CGU, termed G-BiP. RESULTS The results showed that arginine shortage induced a non-canonical ER stress response by inhibiting BiP translation via ribosome pausing. Overexpression of G-BiP in MDA-MB-231 cells promoted cell resistance to arginine shortage compared to cells overexpressing wild-type BiP. Additionally, limiting arginine led to decreased levels of the spliced XBP1 in the G-BiP overexpressing cells, potentially contributing to their improved survival compared to the parental WT BiP overexpressing cells. CONCLUSION In conclusion, these findings suggest that the downregulation of BiP disrupts proteostasis during arginine shortage-induced non-canonical ER stress and plays a key role in cell growth inhibition, indicating BiP as a target of codon-specific ribosome pausing upon arginine shortage.
Collapse
Affiliation(s)
- Christina M Vidal
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes & Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
- Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Ching Ouyang
- Department of Computational and Quantitative Medicine, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Yue Qi
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes & Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Carlos Mendez-Dorantes
- Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
- Department of Cancer Genetics and Epigenetics, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Alaysia Coblentz
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes & Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Jackelyn A Alva-Ornelas
- Department of Population Sciences, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Jeremy M Stark
- Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
- Department of Cancer Genetics and Epigenetics, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - Victoria L Seewaldt
- Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
- Department of Population Sciences, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA
| | - David K Ann
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes & Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA.
- Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, Duarte, CA, 91010, USA.
| |
Collapse
|
3
|
Merkley MB, Soriano D, Jones KL, Summers JA. The Effects of Nitric Oxide on Choroidal Gene Expression. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.16.545343. [PMID: 37398322 PMCID: PMC10312785 DOI: 10.1101/2023.06.16.545343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Abstract
Purpose Nitric oxide (NO) is recognized as an important biological mediator that controls several physiological functions, and evidence is now emerging that this molecule may play a significant role in the postnatal control of ocular growth and myopia development. We therefore sought to understand the role that nitric oxide plays in visually-guided ocular growth in order to gain insight into the underlying mechanisms of this process. Methods Choroids were incubated in organ culture in the presence of the NO donor, PAPA-NONOate (1.5 mM). Following RNA extraction, bulk RNA-seq was used to quantify and compare choroidal gene expression in the presence and absence of PAPA-NONOate. We used bioinformatics to identify enriched canonical pathways, predicted diseases and functions, and regulatory effects of NO in the choroid. Results Upon treatment of normal chick choroids with the NO donor, PAPA-NONOate, we identified a total of 837 differentially expressed genes (259 upregulated genes, 578 down-regulated genes) compared with untreated controls. Among these, the top five upregulated genes were LSMEM1, STEAP4, HSPB9, and CCL19, and the top five down-regulated genes were CDCA3, SMC2, a novel gene (ENSALGALG00000050836), an uncharacterized gene (LOC107054158), and SPAG5. Bioinformatics predicted that NO treatment will activate pathways involved in cell and organismal death, necrosis, and cardiovascular system development, and inhibit pathways involved in cell proliferation, cell movement, and gene expression. Conclusions The findings reported herein may provide insight into possible effects of NO in the choroid during visually regulated eye growth, and help to identify targeted therapies for the treatment of myopia and other ocular diseases.
Collapse
Affiliation(s)
- Makenzie B Merkley
- Department of Biology, University of Oklahoma, Norman, Oklahoma, 73019, United States
| | - Diana Soriano
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, 73104, United States
| | | | - Jody A Summers
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma, 73104, United States
| |
Collapse
|
4
|
Unveiling OASIS family as a key player in hypoxia-ischemia cases induced by cocaine using generative adversarial networks. Sci Rep 2022; 12:6734. [PMID: 35469040 PMCID: PMC9038918 DOI: 10.1038/s41598-022-10772-1] [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: 12/15/2021] [Accepted: 04/08/2022] [Indexed: 11/17/2022] Open
Abstract
Repeated cocaine use poses many serious health risks to users. One of the risks is hypoxia and ischemia (HI). To restore the biological system against HI, complex biological mechanisms operate at the gene level. Despite the complexity of biological mechanisms, there are common denominator genes that play pivotal roles in various defense systems. Among these genes, the cAMP response element-binding (Creb) protein contributes not only to various aspects of drug-seeking behavior and drug reward, but also to protective mechanisms. However, it is still unclear which Creb members are key players in the protection of cocaine-induced HI conditions. Herein, using one of the state-of-the-art deep learning methods, the generative adversarial network, we revealed that the OASIS family, one of the Creb family, is a key player in various defense mechanisms such as angiogenesis and unfolded protein response against the HI state by unveiling hidden mRNA expression profiles. Furthermore, we identified mysterious kinases in the OASIS family and are able to explain why the prefrontal cortex and hippocampus are vulnerable to HI at the genetic level.
Collapse
|
5
|
Nowery JD, Cisney RN, Feldmann JW, Meares GP. Nitric Oxide Induces a Janus Kinase-1-Dependent Inflammatory Response in Primary Murine Astrocytes. ASN Neuro 2021; 13:17590914211033650. [PMID: 34498493 PMCID: PMC8588800 DOI: 10.1177/17590914211033650] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Nitric oxide (NO) is a versatile free radical that has been implicated in many biological
processes (i.e., vasodilation, neurotransmission, and smooth muscle relaxation). High
levels of NO, such as those produced by inducible NO synthase, are associated with innate
immunity as well as tissue damage and disease pathology. Previous studies have
characterized many stimuli that lead to NO production following central nervous system
(CNS) infection, ischemia, and during neurodegeneration, but less is known about the
effects of NO on the CNS resident astrocytes. Previously, excessive NO has been shown to
impair protein folding leading to endoplasmic reticulum (ER) stress and initiation of the
unfolded protein response. Previous studies have shown that ER stress drives activation of
protein kinase R-like ER kinase (PERK) and Janus kinase-1 (JAK1) leading to inflammatory
gene expression. We hypothesized that NO drives inflammatory processes within astrocytes
through a similar process. To test this, we examined the effects of exogenous NO on
primary cultures of murine astrocytes. Our data suggest that NO promotes a
pro-inflammatory response that includes interleukin-6 and several chemokines. Our data
show that NO induces phosphorylation of eukaryotic initiation factor 2 alpha; however,
this and the inflammatory gene expression are independent of PERK. Knockdown of JAK1 using
small interfering RNA reduced the expression of inflammatory mediators. Overall, we have
identified that NO stimulates the integrated stress response and a JAK1-dependent
inflammatory program in astrocytes. Summary statement: Murine astrocytes in culture respond to NO with increased expression
of stress and inflammatory genes. The inflammatory stress response is independent of the
ER stress-activated kinase PERK and is, in part, mediated by JAK1.
Collapse
Affiliation(s)
- John D Nowery
- Department of Microbiology, Immunology, and Cell Biology, 5631West Virginia University, Morgantown, WV, USA
| | - Rylee N Cisney
- Department of Microbiology, Immunology, and Cell Biology, 5631West Virginia University, Morgantown, WV, USA
| | - Jacob W Feldmann
- Department of Neuroscience, 5631West Virginia University, Morgantown, WV, USA
| | - Gordon P Meares
- Department of Microbiology, Immunology, and Cell Biology, 5631West Virginia University, Morgantown, WV, USA.,Department of Neuroscience, 5631West Virginia University, Morgantown, WV, USA.,WVU Rockefeller Neuroscience Institute, Morgantown, WV, USA
| |
Collapse
|
6
|
Guo J, Ren R, Sun K, He J, Shao J. PERK signaling pathway in bone metabolism: Friend or foe? Cell Prolif 2021; 54:e13011. [PMID: 33615575 PMCID: PMC8016635 DOI: 10.1111/cpr.13011] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 01/18/2021] [Accepted: 02/05/2021] [Indexed: 12/12/2022] Open
Abstract
Osteoblasts and osteoclasts participate in the process of bone remodelling to meet the needs of normal growth and development or repair pathological damage. Endoplasmic reticulum stress (ER stress) can break the intracellular homeostasis of osteoclasts and osteoblasts, which is closely related to abnormal bone remodelling. The double‐stranded RNA‐dependent protein kinase (PKR)‐like ER kinase (PERK) is a key transmembrane protein that regulates ER stress, and growing evidence suggests that the PERK pathway plays a crucial role in regulating bone metabolism under both physiological and pathological conditions. Based on the current findings, we summarized the main mechanisms involved in bone metabolism downstream of the PERK pathway, among which elF2α, FOXO1, CaN, Nrf2 and DAG play a role in regulating the differentiation of osteoblasts and osteoclasts. Importantly, strategies by the regulation of PERK pathway exert beneficial effects in preclinical trials of several bone‐related diseases. Given the importance and novelty of PERK pathway, we provide an overview and discuss the roles of PERK pathway in regulating bone metabolism and its impact on bone‐related diseases. We hope that the development of research in this field will bring a bright future for the treatment of bone‐related diseases.
Collapse
Affiliation(s)
- Jiachao Guo
- Department of Pediatric Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ranyue Ren
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Sun
- Department of Orthopedics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jinpeng He
- Department of Pediatric Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jingfan Shao
- Department of Pediatric Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
7
|
Behrens CE, Ahmed K, Ricart K, Linder B, Fernández J, Bertrand B, Patel RP, Fisher G. Acute beetroot juice supplementation improves exercise tolerance and cycling efficiency in adults with obesity. Physiol Rep 2020; 8:e14574. [PMID: 33063953 PMCID: PMC7556310 DOI: 10.14814/phy2.14574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 08/16/2020] [Accepted: 08/19/2020] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Exercise training improves health outcomes in individuals with obesity (IO); however, it remains challenging for IO to adhere to exercise. Thus, it is critical to identify novel strategies that improve exercise tolerance (ET) and adherence in IO. Beetroot juice (BRJ), high in inorganic dietary nitrate, consistently improves exercise performance in athletes, individuals with cardiopulmonary diseases, and nonobese lean individuals. These improvements may be explained by reduced oxygen uptake (VO2 ) during exercise, enhanced blood flow, and greater mitochondrial efficiency. To date, we are aware of no studies that have compared the effects of BRJ, sodium nitrate (NaNO3), and nitrate-depleted BRJ (PLA) for improving ET and cardiometabolic health in IO. PURPOSE Determine if BRJ improves ET, exercise efficiency (EE), and cardiometabolic health in IO and identify possible mechanisms of action. METHODS Vascular hemodynamic, submaximal- and maximal-exercise VO2 , and time to exhaustion (TTE) were assessed in 16 participants 2.5 hr following consumption of: 1) BRJ, 2) NaNO3 , 3) PLA, or 4) CON. RESULTS A significant treatment effect was observed for submaximal exercise VO2 (p = .003), and TTE (p < .001). Post hoc analyses revealed lower VO2 during submaximal exercise in BRJ compared to PLA (p = .009) NaNO3 (p = .042) and CON (0.009), equating to an average improvement of ~ 7% with BRJ. TTE was greater for BRJ compared to other treatment arms, PLA (p = .008), NaNO3 (p = .038), and CON (p=<0.001), equating to ~ 15% improvement with BRJ. No significant changes were observed for other outcomes. CONCLUSIONS Consumption of BRJ improved EE during submaximal exercise by 7%, and TTE by 15% compared to other conditions. These results suggest that BRJ may improve EE and exercise tolerance in IO.
Collapse
Affiliation(s)
- Christian E. Behrens
- Department of Nutrition SciencesThe University of Alabama at BirminghamBirminghamALUSA
| | - Khandaker Ahmed
- Department of Pathology and Center for Free Radical BiologyThe University of Alabama at BirminghamBirminghamALUSA
| | - Karina Ricart
- Department of Pathology and Center for Free Radical BiologyThe University of Alabama at BirminghamBirminghamALUSA
| | - Braxton Linder
- Department of Human StudiesThe University of Alabama at BirminghamBirminghamALUSA
| | - José Fernández
- Department of Nutrition SciencesThe University of Alabama at BirminghamBirminghamALUSA
| | - Brenda Bertrand
- Department of Nutrition SciencesThe University of Alabama at BirminghamBirminghamALUSA
| | - Rakesh P. Patel
- Department of Pathology and Center for Free Radical BiologyThe University of Alabama at BirminghamBirminghamALUSA
| | - Gordon Fisher
- Department of Human StudiesThe University of Alabama at BirminghamBirminghamALUSA
| |
Collapse
|
8
|
Singh S. Updates on Versatile Role of Putative Gasotransmitter Nitric Oxide: Culprit in Neurodegenerative Disease Pathology. ACS Chem Neurosci 2020; 11:2407-2415. [PMID: 32564594 DOI: 10.1021/acschemneuro.0c00230] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Nitric oxide (NO) is a versatile gasotransmitter that contributes in a range of physiological and pathological mechanims depending on its cellular levels. An appropriate concentration of NO is essentially required for cellular physiology; however, its increased level triggers pathological mechanisms like altered cellular redox regulation, functional impairment of mitochondrion, and modifications in cellular proteins and DNA. Its increased levels also exhibit post-translational modifications in protein through S-nitrosylation of their thiol amino acids, which critically affect the cellular physiology. Along with such modifications, NO could also nitrosylate the endoplasmic reticulum (ER)-membrane located sensors of ER stress, which subsequently affect the cellular protein degradation capacity and lead to aggregation of misfolded/unfolded proteins. Since protein aggregation is one of the pathological hallmarks of neurodegenerative disease, NO should be taken into account during development of disease therapies. In this Review, we shed light on the diverse role of NO in both cellular physiology and pathology and discussed its involvement in various pathological events in the context of neurodegenerative diseases.
Collapse
Affiliation(s)
- Sarika Singh
- Department of Neurosciences and Ageing Biology and Division of Toxicology and Experimental Medicine, CSIR-Central Drug Research Institute, Lucknow, Uttar Pradesh 226031, India
| |
Collapse
|
9
|
Sun ZG, Lu G, Zhao LL, Zhang LZ, Li A, Jing J, Xu X. Exercise Preconditioning Protects against Acute Cardiac Injury Induced by Lipopolysaccharide Through General Control Nonderepressible 2 Kinase. Int Heart J 2020; 61:138-144. [DOI: 10.1536/ihj.19-307] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Zhong-Guang Sun
- Department of Exercise Rehabilitation, Shanghai University of Sport
| | - Guo Lu
- Department of Exercise Rehabilitation, Shanghai University of Sport
| | - Lin-Lin Zhao
- Department of Exercise Rehabilitation, Shanghai University of Sport
| | - Li-Zhen Zhang
- Department of Exercise Rehabilitation, Shanghai University of Sport
| | - Ai Li
- Department of Exercise Rehabilitation, Shanghai University of Sport
| | - Jing Jing
- Department of Exercise Rehabilitation, Shanghai University of Sport
| | - Xin Xu
- Department of Exercise Rehabilitation, Shanghai University of Sport
| |
Collapse
|
10
|
Zhang MM, Ma YH, Li P, Jia Y, Han KL. Detection of atherosclerosis-related hypochlorous acid produced in foam cells with a localized endoplasmic reticulum probe. Chem Commun (Camb) 2020; 56:2610-2613. [DOI: 10.1039/d0cc00090f] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have synthesized a turn-on fluorescent probe, termed NB4OH, to detect cellular hypochlorite.
Collapse
Affiliation(s)
- Meng-meng Zhang
- State Key Laboratory of Molecular Reaction Dynamics
- Dalian Institute of Chemical Physics (DICP)
- Chinese Academy of Sciences (CAS)
- P. R. China
- University of the Chinese Academy of Sciences
| | - Yin-Hua Ma
- State Key Laboratory of Molecular Reaction Dynamics
- Dalian Institute of Chemical Physics (DICP)
- Chinese Academy of Sciences (CAS)
- P. R. China
- University of the Chinese Academy of Sciences
| | - Peng Li
- Shandong University
- P. R. China
| | - Yan Jia
- State Key Laboratory of Molecular Reaction Dynamics
- Dalian Institute of Chemical Physics (DICP)
- Chinese Academy of Sciences (CAS)
- P. R. China
| | - Ke-Li Han
- State Key Laboratory of Molecular Reaction Dynamics
- Dalian Institute of Chemical Physics (DICP)
- Chinese Academy of Sciences (CAS)
- P. R. China
| |
Collapse
|
11
|
Functions and dysfunctions of nitric oxide in brain. Biochim Biophys Acta Mol Basis Dis 2019; 1865:1949-1967. [DOI: 10.1016/j.bbadis.2018.11.007] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/29/2018] [Accepted: 11/11/2018] [Indexed: 02/06/2023]
|
12
|
de Castro TF, de Assis Manoel F, Figueiredo DH, Figueiredo DH, Machado FA. Effects of chronic beetroot juice supplementation on maximum oxygen uptake, velocity associated with maximum oxygen uptake, and peak velocity in recreational runners: a double-blinded, randomized and crossover study. Eur J Appl Physiol 2019; 119:1043-1053. [DOI: 10.1007/s00421-019-04094-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 02/06/2019] [Indexed: 12/17/2022]
|
13
|
Hou JT, Kim HS, Duan C, Ji MS, Wang S, Zeng L, Ren WX, Kim JS. A ratiometric fluorescent probe for detecting hypochlorite in the endoplasmic reticulum. Chem Commun (Camb) 2019; 55:2533-2536. [DOI: 10.1039/c9cc00066f] [Citation(s) in RCA: 97] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A colorimetric and fluorescent probe ER-ClO was developed to detect cellular hypochlorite with high selectivity and sensitivity.
Collapse
Affiliation(s)
- Ji-Ting Hou
- Hubei Collaboration Innovation Center for Biomass Conversion and Utilization
- School of Chemistry and Materials Science
- Hubei Engineering University
- Xiaogan 432000
- P. R. China
| | | | - Chong Duan
- School of Chemistry and Chemical Engineering, Tianjin University of Technology
- Tianjin
- P. R. China
| | - Myung Sun Ji
- Department of Chemistry
- Korea University
- Seoul 02841
- Korea
| | - Shan Wang
- Hubei Collaboration Innovation Center for Biomass Conversion and Utilization
- School of Chemistry and Materials Science
- Hubei Engineering University
- Xiaogan 432000
- P. R. China
| | - Lintao Zeng
- School of Chemistry and Chemical Engineering, Tianjin University of Technology
- Tianjin
- P. R. China
| | - Wen Xiu Ren
- Department of Radiology
- The Affiliated Hospital of Southwest Medical University
- Luzhou 646000
- P. R. China
- Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province
| | | |
Collapse
|
14
|
Kim MJ, Min SH, Shin SY, Kim MN, Lee H, Jang JY, Kim SW, Park KS, Jung HS. Attenuation of PERK enhances glucose-stimulated insulin secretion in islets. J Endocrinol 2018; 236:125-136. [PMID: 29273589 DOI: 10.1530/joe-17-0497] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Accepted: 12/22/2017] [Indexed: 01/18/2023]
Abstract
PERK is a pancreatic endoplasmic reticulum (ER) kinase. Its complete deletion in pancreatic β cells induces insulin deficiency; however, the effects of partial Perk suppression are unclear. We investigated the effect of partial PERK suppression using the specific PERK inhibitors GSK2606414 and GSK2656157. Low-dose GSK2606414 treatment for 24 h enhanced glucose-stimulated insulin secretion (GSIS), islet insulin content and calcium transit in mouse (at 40 nM) and human (at 50-100 nM) pancreatic islets. GSK2606414 also induced the expression of the ER chaperone BiP and the release of calcium from the ER. When Bip expression was inhibited using a Bip siRNA, the GSK2606414-induced augmentation of the ER calcium level, islet insulin contents, glucose-stimulated cytosolic calcium transit and GSIS were abrogated. In both wild-type and insulin-deficient Atg7-knockout mice, 8 weeks of GSK2656157 treatment enhanced GSIS and improved hyperglycemia without affecting body weight. In conclusion, partial PERK inhibition induced BiP expression in islets, increased glucose-stimulated calcium transit and islet insulin contents and enhanced GSIS, suggesting that low-dose PERK inhibitors could potentially be used to treat insulin deficiency.
Collapse
Affiliation(s)
- Min Joo Kim
- Department of Internal MedicineSeoul National University College of Medicine, Seoul, Republic of Korea
| | - Se Hee Min
- Department of Internal MedicineSeoul National University College of Medicine, Seoul, Republic of Korea
| | - Seon Young Shin
- Innovative Research Institute for Cell TherapySeoul, Republic of Korea
| | - Mi Na Kim
- Innovative Research Institute for Cell TherapySeoul, Republic of Korea
| | - Hakmo Lee
- Innovative Research Institute for Cell TherapySeoul, Republic of Korea
| | - Jin Young Jang
- Department of SurgerySeoul National University College of Medicine, Seoul, Republic of Korea
| | - Sun-Whe Kim
- Department of SurgerySeoul National University College of Medicine, Seoul, Republic of Korea
| | - Kyong Soo Park
- Department of Internal MedicineSeoul National University College of Medicine, Seoul, Republic of Korea
- Innovative Research Institute for Cell TherapySeoul, Republic of Korea
| | - Hye Seung Jung
- Department of Internal MedicineSeoul National University College of Medicine, Seoul, Republic of Korea
- Innovative Research Institute for Cell TherapySeoul, Republic of Korea
| |
Collapse
|
15
|
The Mechanisms of Carnosol in Chemoprevention of Ultraviolet B-Light-Induced Non-Melanoma Skin Cancer Formation. Sci Rep 2018; 8:3574. [PMID: 29476131 PMCID: PMC5824785 DOI: 10.1038/s41598-018-22029-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 11/28/2017] [Indexed: 12/30/2022] Open
Abstract
Carnosol is a natural compound extracted from rosemary and sage, which has been demonstrated to have anti-inflammatory, anti-oxidant, and anti-cancer properties. In this report, we evaluated the therapeutic potential and elucidated the potential mechanism of action of carnosol in chemoprevention of ultraviolet B-light (UVB) induced non-melanoma skin cancer formation. Our data indicated that carnosol could partially reduce UVB-induced reactive oxygen species (ROS) elevation and thus reduce DNA damage. It could also reduce UVB-induced formation of cyclobutane pyrimidine dimers (CDP) in keratinocytes possibly through its ability in absorbing UVB radiation. In addition, carnosol could inhibit the UVB-induced activation of NF-κB and also reduce UVB-induced transformation of keratinocytes. Taken together, the results indicate the role of carnosol as a potential chemopreventive agent upon UVB radiation.
Collapse
|
16
|
Domínguez R, Maté-Muñoz JL, Cuenca E, García-Fernández P, Mata-Ordoñez F, Lozano-Estevan MC, Veiga-Herreros P, da Silva SF, Garnacho-Castaño MV. Effects of beetroot juice supplementation on intermittent high-intensity exercise efforts. J Int Soc Sports Nutr 2018; 15:2. [PMID: 29311764 PMCID: PMC5756374 DOI: 10.1186/s12970-017-0204-9] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 12/07/2017] [Indexed: 12/21/2022] Open
Abstract
Beetroot juice contains high levels of inorganic nitrate (NO3-) and its intake has proved effective at increasing blood nitric oxide (NO) concentrations. Given the effects of NO in promoting vasodilation and blood flow with beneficial impacts on muscle contraction, several studies have detected an ergogenic effect of beetroot juice supplementation on exercise efforts with high oxidative energy metabolism demands. However, only a scarce yet growing number of investigations have sought to assess the effects of this supplement on performance at high-intensity exercise. Here we review the few studies that have addressed this issue. The databases Dialnet, Elsevier, Medline, Pubmed and Web of Science were searched for articles in English, Portuguese and Spanish published from 2010 to March 31 to 2017 using the keywords: beet or beetroot or nitrate or nitrite and supplement or supplementation or nutrition or "sport nutrition" and exercise or sport or "physical activity" or effort or athlete. Nine articles fulfilling the inclusion criteria were identified. Results indicate that beetroot juice given as a single dose or over a few days may improve performance at intermittent, high-intensity efforts with short rest periods. The improvements observed were attributed to faster phosphocreatine resynthesis which could delay its depletion during repetitive exercise efforts. In addition, beetroot juice supplementation could improve muscle power output via a mechanism involving a faster muscle shortening velocity. The findings of some studies also suggested improved indicators of muscular fatigue, though the mechanism involved in this effect remains unclear.
Collapse
Affiliation(s)
- Raúl Domínguez
- Physical Activity and Sport Sciences, College of Health Sciences, Alfonso X El Sabio University, Madrid, Spain
| | - José Luis Maté-Muñoz
- Physical Activity and Sport Sciences, College of Health Sciences, Alfonso X El Sabio University, Madrid, Spain
| | - Eduardo Cuenca
- TecnoCampus. GRI-AFIRS, School of Health Sciences, Pompeu Fabra University, Mataró, Barcelona, Spain
| | - Pablo García-Fernández
- Physical Activity and Sport Sciences, College of Health Sciences, Alfonso X El Sabio University, Madrid, Spain
| | | | - María Carmen Lozano-Estevan
- Physical Activity and Sport Sciences, College of Health Sciences, Alfonso X El Sabio University, Madrid, Spain
| | - Pablo Veiga-Herreros
- Physical Activity and Sport Sciences, College of Health Sciences, Alfonso X El Sabio University, Madrid, Spain
| | - Sandro Fernandes da Silva
- Physical Activity and Sport Sciences, Physical Education Departament, University of Lavras, Lavras, Brazil
| | | |
Collapse
|
17
|
Palomera-Ávalos V, Griñán-Ferré C, Izquierdo V, Camins A, Sanfeliu C, Canudas AM, Pallàs M. Resveratrol modulates response against acute inflammatory stimuli in aged mouse brain. Exp Gerontol 2017; 102:3-11. [PMID: 29174969 DOI: 10.1016/j.exger.2017.11.014] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 11/16/2017] [Accepted: 11/21/2017] [Indexed: 10/18/2022]
Abstract
With upcoming age, the capability to fight against harmful stimuli decreases and the organism becomes more susceptible to infections and diseases. Here, the objective was to demonstrate the effect of dietary resveratrol in aged mice in potentiating brain defenses against LipoPolySaccharide (LPS). Acute LPS injection induced a strong proinflammatory effect in 24-months-old C57/BL6 mice hippocampi, increasing InterLeukin (Il)-6, Tumor Necrosis Factor-alpha (Tnf-α), Il-1β, and C-X-C motif chemokine (Cxcl10) gene expression levels. Resveratrol induced higher expression in those cytokines regarding to LPS. Oxidative Stress (OS) markers showed not significant changes after LPS or resveratrol, although for resveratrol treated groups a slight increment in most of the parameters studies was observed, reaching signification for NF-kB protein levels and iNOS expression. However, Endoplasmic Reticulum (ER) stress markers demonstrated significant changes in resveratrol-treated mice after LPS treatment, specifically in eIF2α, BIP, and ATF4. Moreover, as described, resveratrol is able to inhibit the mechanistic Target of Rapamycin (mTOR) pathway and this effect could be linked to (eIF2α) phosphorylation and the increase in the expression of the previously mentioned proinflammatory genes as a response to LPS treatment in aged animals. In conclusion, resveratrol treatment induced a different cellular response in aged animals when they encountered acute inflammatory stimuli.
Collapse
Affiliation(s)
- V Palomera-Ávalos
- Department of Pharmacology, Toxicology and Therapeutic Chemistry (Pharmacology Section), Institute of Neuroscience, CIBERNED, University of Barcelona, Avda. Joan XXIII s/n, 08028 Barcelona, Spain
| | - C Griñán-Ferré
- Department of Pharmacology, Toxicology and Therapeutic Chemistry (Pharmacology Section), Institute of Neuroscience, CIBERNED, University of Barcelona, Avda. Joan XXIII s/n, 08028 Barcelona, Spain
| | - V Izquierdo
- Department of Pharmacology, Toxicology and Therapeutic Chemistry (Pharmacology Section), Institute of Neuroscience, CIBERNED, University of Barcelona, Avda. Joan XXIII s/n, 08028 Barcelona, Spain
| | - A Camins
- Department of Pharmacology, Toxicology and Therapeutic Chemistry (Pharmacology Section), Institute of Neuroscience, CIBERNED, University of Barcelona, Avda. Joan XXIII s/n, 08028 Barcelona, Spain
| | - C Sanfeliu
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), CSIC, and IDIBAPS, 08036 Barcelona, Spain
| | - A M Canudas
- Department of Pharmacology, Toxicology and Therapeutic Chemistry (Pharmacology Section), Institute of Neuroscience, CIBERNED, University of Barcelona, Avda. Joan XXIII s/n, 08028 Barcelona, Spain
| | - M Pallàs
- Department of Pharmacology, Toxicology and Therapeutic Chemistry (Pharmacology Section), Institute of Neuroscience, CIBERNED, University of Barcelona, Avda. Joan XXIII s/n, 08028 Barcelona, Spain.
| |
Collapse
|
18
|
Santos LE, Ferreira ST. Crosstalk between endoplasmic reticulum stress and brain inflammation in Alzheimer's disease. Neuropharmacology 2017; 136:350-360. [PMID: 29129774 DOI: 10.1016/j.neuropharm.2017.11.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 11/08/2017] [Indexed: 02/07/2023]
Abstract
While most often noted for its cognitive symptoms, Alzheimer's disease (AD) is, at its core, a disease of protein misfolding/aggregation, with an intriguing inflammatory component. Defective clearance and/or abnormal production of the amyloid-β peptide (Aβ), and its ensuing accumulation and aggregation, underlie two hallmark features of AD: brain accumulation of insoluble protein deposits known as amyloid or senile plaques, and buildup of soluble Aβ oligomers (AβOs), diffusible toxins linked to synapse dysfunction and memory impairment. In neurons, as in typical eukaryotic cells, the endoplasmic reticulum (ER) serves as a main compartment for the folding, maturation, trafficking and quality control of newly synthesized proteins. The ER lumen, a calcium-rich, oxidizing environment, provides favorable conditions for these physiological functions to occur. These conditions, however, also favor protein aggregation. Several stressors, including metabolic/nutrient stress and certain pathologies, may upset the ER homeostasis, e.g., by affecting calcium levels or by causing the accumulation of unfolded or misfolded proteins. Whatever the underlying cause, the result is what is commonly known as "ER stress". This, in turn, triggers a conserved cellular response mechanism known as the "unfolded protein response" (UPR). The UPR comprises three pathways involving transcriptional or translational regulators aimed at normalizing ER function, and each of them results in pro-inflammatory signaling. A positive feedback loop exists between ER stress and inflammation, with clear implications for neurodegeneration and AD. Here, we explore recent findings on the role of ER stress and the UPR in inflammatory processes leading to synapse failure and memory impairment in AD. This article is part of the Special Issue entitled 'Metabolic Impairment as Risk Factors for Neurodegenerative Disorders.'
Collapse
Affiliation(s)
- Luis E Santos
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21944-590, Brazil
| | - Sergio T Ferreira
- Institute of Medical Biochemistry Leopoldo de Meis, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21944-590, Brazil; Institute of Biophysics Carlos Chagas Filho, Federal University of Rio de Janeiro, Rio de Janeiro, RJ 21944-590, Brazil.
| |
Collapse
|
19
|
Domínguez R, Cuenca E, Maté-Muñoz JL, García-Fernández P, Serra-Paya N, Estevan MCL, Herreros PV, Garnacho-Castaño MV. Effects of Beetroot Juice Supplementation on Cardiorespiratory Endurance in Athletes. A Systematic Review. Nutrients 2017; 9:nu9010043. [PMID: 28067808 PMCID: PMC5295087 DOI: 10.3390/nu9010043] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 12/24/2016] [Accepted: 12/30/2016] [Indexed: 01/08/2023] Open
Abstract
Athletes use nutritional supplementation to enhance the effects of training and achieve improvements in their athletic performance. Beetroot juice increases levels of nitric oxide (NO), which serves multiple functions related to increased blood flow, gas exchange, mitochondrial biogenesis and efficiency, and strengthening of muscle contraction. These biomarker improvements indicate that supplementation with beetroot juice could have ergogenic effects on cardiorespiratory endurance that would benefit athletic performance. The aim of this literature review was to determine the effects of beetroot juice supplementation and the combination of beetroot juice with other supplements on cardiorespiratory endurance in athletes. A keyword search of DialNet, MedLine, PubMed, Scopus and Web of Science databases covered publications from 2010 to 2016. After excluding reviews/meta-analyses, animal studies, inaccessible full-text, and studies that did not supplement with beetroot juice and adequately assess cardiorespiratory endurance, 23 articles were selected for analysis. The available results suggest that supplementation with beetroot juice can improve cardiorespiratory endurance in athletes by increasing efficiency, which improves performance at various distances, increases time to exhaustion at submaximal intensities, and may improve the cardiorespiratory performance at anaerobic threshold intensities and maximum oxygen uptake (VO2max). Although the literature shows contradictory data, the findings of other studies lead us to hypothesize that supplementing with beetroot juice could mitigate the ergolytic effects of hypoxia on cardiorespiratory endurance in athletes. It cannot be stated that the combination of beetroot juice with other supplements has a positive or negative effect on cardiorespiratory endurance, but it is possible that the effects of supplementation with beetroot juice can be undermined by interaction with other supplements such as caffeine.
Collapse
Affiliation(s)
- Raúl Domínguez
- College of Health Sciences, University Alfonso X El Sabio University, Madrid 29651, Spain.
| | - Eduardo Cuenca
- Tecnocampus, College of Health Sciences, University of Pompeu Fabra, Mataró-Maresme, Barcelona 08302 Spain.
| | - José Luis Maté-Muñoz
- College of Health Sciences, University Alfonso X El Sabio University, Madrid 29651, Spain.
| | - Pablo García-Fernández
- College of Health Sciences, University Alfonso X El Sabio University, Madrid 29651, Spain.
| | - Noemí Serra-Paya
- Tecnocampus, College of Health Sciences, University of Pompeu Fabra, Mataró-Maresme, Barcelona 08302 Spain.
| | | | - Pablo Veiga Herreros
- College of Health Sciences, University Alfonso X El Sabio University, Madrid 29651, Spain.
| | | |
Collapse
|
20
|
Roberts JL, Tavallai M, Nourbakhsh A, Fidanza A, Cruz-Luna T, Smith E, Siembida P, Plamondon P, Cycon KA, Doern CD, Booth L, Dent P. GRP78/Dna K Is a Target for Nexavar/Stivarga/Votrient in the Treatment of Human Malignancies, Viral Infections and Bacterial Diseases. J Cell Physiol 2015; 230:2552-78. [PMID: 25858032 PMCID: PMC4843173 DOI: 10.1002/jcp.25014] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 04/06/2015] [Indexed: 01/10/2023]
Abstract
Prior tumor cell studies have shown that the drugs sorafenib (Nexavar) and regorafenib (Stivarga) reduce expression of the chaperone GRP78. Sorafenib/regorafenib and the multi‐kinase inhibitor pazopanib (Votrient) interacted with sildenafil (Viagra) to further rapidly reduce GRP78 levels in eukaryotes and as single agents to reduce Dna K levels in prokaryotes. Similar data were obtained in tumor cells in vitro and in drug‐treated mice for: HSP70, mitochondrial HSP70, HSP60, HSP56, HSP40, HSP10, and cyclophilin A. Prolonged ‘rafenib/sildenafil treatment killed tumor cells and also rapidly decreased the expression of: the drug efflux pumps ABCB1 and ABCG2; and NPC1 and NTCP, receptors for Ebola/Hepatitis A and B viruses, respectively. Pre‐treatment with the ‘Rafenib/sildenafil combination reduced expression of the Coxsackie and Adenovirus receptor in parallel with it also reducing the ability of a serotype 5 Adenovirus or Coxsackie virus B4 to infect and to reproduce. Sorafenib/pazopanib and sildenafil was much more potent than sorafenib/pazopanib as single agents at preventing Adenovirus, Mumps, Chikungunya, Dengue, Rabies, West Nile, Yellow Fever, and Enterovirus 71 infection and reproduction. ‘Rafenib drugs/pazopanib as single agents killed laboratory generated antibiotic resistant E. coli which was associated with reduced Dna K and Rec A expression. Marginally toxic doses of ‘Rafenib drugs/pazopanib restored antibiotic sensitivity in pan‐antibiotic resistant bacteria including multiple strains of blakpcKlebsiella pneumoniae. Thus, Dna K is an antibiotic target for sorafenib, and inhibition of GRP78/Dna K has therapeutic utility for cancer and for bacterial and viral infections. J. Cell. Physiol. 230: 2552–2578, 2015. © 2015 The Authors. Journal of Cellular Physiology published by Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Jane L Roberts
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, Virginia
| | - Mehrad Tavallai
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, Virginia
| | - Aida Nourbakhsh
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, Virginia
| | | | | | | | | | | | | | - Christopher D Doern
- Department of Pathology, Virginia Commonwealth University, Richmond, Virginia
| | - Laurence Booth
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, Virginia
| | - Paul Dent
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, Virginia
| |
Collapse
|
21
|
Ma L, Bao R. Pulmonary capillary hemangiomatosis: a focus on the EIF2AK4 mutation in onset and pathogenesis. APPLICATION OF CLINICAL GENETICS 2015; 8:181-8. [PMID: 26300654 PMCID: PMC4536836 DOI: 10.2147/tacg.s68635] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Pulmonary capillary hemangiomatosis (PCH) is a pulmonary vascular disease that mainly affects small capillaries in the lung, and is often misdiagnosed as pulmonary arterial hypertension or pulmonary veno-occlusive disease due to similarities in their clinical presentations, prognosis, and management. In patients who are symptomatic, there is a high mortality rate with median survival of 3 years after diagnosis. Both idiopathic and familial PCH cases are being reported, indicating there is genetic component in disease etiology. Mutations in the eukaryotic translation initiation factor 2α kinase 4 (EIF2AK4) gene were identified in familial and idiopathic PCH cases, suggesting EIF2AK4 is a genetic risk factor for PCH. EIF2AK4 mutations were identified in 100% (6/6) of autosomal recessively inherited familial PCH and 20% (2/10) of sporadic PCH cases. EIF2AK4 is a member of serine/threonine kinases. It downregulates protein synthesis in response to a variety of cellular stress such as hypoxia, viral infection, and amino acid deprivation. Bone morphogenetic protein receptor 2 (BMPR2) is a major genetic risk factor in pulmonary arterial hypertension and EIF2AK4 potentially connects with BMPR2 to cause PCH. L-Arginine is substrate of nitric oxide synthase, and L-arginine is depleted during the production of nitric oxide, which may activate EIF2AK4 to inhibit protein synthesis and negatively regulate vasculogenesis. Mammalian target of rapamycin and EIF2α kinase are two major pathways for translational regulation. Mutant EIF2AK4 could promote proliferation of small pulmonary arteries by crosstalk with mammalian targets of the rapamycin signaling pathway. EIF2AK4 may regulate angiogenesis by modulating the immune system in PCH pathogenesis. The mechanisms of abnormal capillary angiogenesis are suggested to be similar to that of tumor vascularization. Specific therapies were developed according to pathogenesis and are proved to be effective in reported cases. Targeting the EIF2AK4 pathway may provide a novel therapy for PCH.
Collapse
Affiliation(s)
- Lijiang Ma
- Department of Pediatrics and Medicine, Division of Molecular Genetics, Columbia University Medical Center, New York, NY, USA
| | - Ruijun Bao
- The Children's IBD Center, Mount Sinai Hospital, New York, NY, USA
| |
Collapse
|
22
|
Booth L, Roberts JL, Tavallai M, Nourbakhsh A, Chuckalovcak J, Carter J, Poklepovic A, Dent P. OSU-03012 and Viagra Treatment Inhibits the Activity of Multiple Chaperone Proteins and Disrupts the Blood-Brain Barrier: Implications for Anti-Cancer Therapies. J Cell Physiol 2015; 230:1982-98. [PMID: 25736380 PMCID: PMC4835175 DOI: 10.1002/jcp.24977] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 02/26/2015] [Indexed: 12/14/2022]
Abstract
We examined the interaction between OSU‐03012 (also called AR‐12) with phosphodiesterase 5 (PDE5) inhibitors to determine the role of the chaperone glucose‐regulated protein (GRP78)/BiP/HSPA5 in the cellular response. Sildenafil (Viagra) interacted in a greater than additive fashion with OSU‐03012 to kill stem‐like GBM cells. Treatment of cells with OSU‐03012/sildenafil: abolished the expression of multiple oncogenic growth factor receptors and plasma membrane drug efflux pumps and caused a rapid degradation of GRP78 and other HSP70 and HSP90 family chaperone proteins. Decreased expression of plasma membrane receptors and drug efflux pumps was dependent upon enhanced PERK‐eIF2α‐ATF4‐CHOP signaling and was blocked by GRP78 over‐expression. In vivo OSU‐03012/sildenafil was more efficacious than treatment with celecoxib and sildenafil at killing tumor cells without damaging normal tissues and in parallel reduced expression of ABCB1 and ABCG2 in the normal brain. The combination of OSU‐03012/sildenafil synergized with low concentrations of sorafenib to kill tumor cells, and with lapatinib to kill ERBB1 over‐expressing tumor cells. In multiplex assays on plasma and human tumor tissue from an OSU‐03012/sildenafil treated mouse, we noted a profound reduction in uPA signaling and identified FGF and JAK1/2 as response biomarkers for potentially suppressing the killing response. Inhibition of FGFR signaling and to a lesser extent JAK1/2 signaling profoundly enhanced OSU‐03012/sildenafil lethality. J. Cell. Physiol. 230: 1982–1998, 2015. © 2015 The Authors. Journal of Cellular Physiology Published by Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Laurence Booth
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, Virginia
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Booth L, Roberts JL, Cash DR, Tavallai S, Jean S, Fidanza A, Cruz-Luna T, Siembiba P, Cycon KA, Cornelissen CN, Dent P. GRP78/BiP/HSPA5/Dna K is a universal therapeutic target for human disease. J Cell Physiol 2015; 230:1661-76. [PMID: 25546329 PMCID: PMC4402027 DOI: 10.1002/jcp.24919] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 12/18/2014] [Indexed: 01/11/2023]
Abstract
The chaperone GRP78/Dna K is conserved throughout evolution down to prokaryotes. The GRP78 inhibitor OSU-03012 (AR-12) interacted with sildenafil (Viagra) or tadalafil (Cialis) to rapidly reduce GRP78 levels in eukaryotes and as a single agent reduce Dna K levels in prokaryotes. Similar data with the drug combination were obtained for: HSP70, HSP90, GRP94, GRP58, HSP27, HSP40 and HSP60. OSU-03012/sildenafil treatment killed brain cancer stem cells and decreased the expression of: NPC1 and TIM1; LAMP1; and NTCP1, receptors for Ebola/Marburg/Hepatitis A, Lassa fever, and Hepatitis B viruses, respectively. Pre-treatment with OSU-03012/sildenafil reduced expression of the coxsakie and adenovirus receptor in parallel with it also reducing the ability of a serotype 5 adenovirus or coxsakie virus B4 to infect and to reproduce. Similar data were obtained using Chikungunya, Mumps, Measles, Rubella, RSV, CMV, and Influenza viruses. OSU-03012 as a single agent at clinically relevant concentrations killed laboratory generated antibiotic resistant E. coli and clinical isolate multi-drug resistant N. gonorrhoeae and MRSE which was in bacteria associated with reduced Dna K and Rec A expression. The PDE5 inhibitors sildenafil or tadalafil enhanced OSU-03012 killing in N. gonorrhoeae and MRSE and low marginally toxic doses of OSU-03012 could restore bacterial sensitivity in N. gonorrhoeae to multiple antibiotics. Thus, Dna K and bacterial phosphodiesterases are novel antibiotic targets, and inhibition of GRP78 is of therapeutic utility for cancer and also for bacterial and viral infections. J. Cell. Physiol. 230: 1661–1676, 2015. © 2014 The Authors. Journal of Cellular Physiology Published by Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Laurence Booth
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA 23298
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Tong L, Yuan Y, Wu S. Therapeutic microRNAs targeting the NF-kappa B signaling circuits of cancers. Adv Drug Deliv Rev 2015; 81:1-15. [PMID: 25220353 DOI: 10.1016/j.addr.2014.09.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 08/27/2014] [Accepted: 09/03/2014] [Indexed: 02/06/2023]
Abstract
MicroRNAs (miRNAs) not only directly regulate NF-κB expression, but also up- or down-regulate NF-κB activity via upstream and downstream signaling pathways of NF-κB. In many cancer cells, miRNA expressions are altered accompanied with an elevation of NF-κB activity, which often plays a role in promoting cancer development and progression as well as hindering the effectiveness of chemo and radiation therapies. Thus NF-κB-targeting miRNAs have been identified and characterized as potential therapeutics for cancer treatment and sensitizers of chemo and radiotherapies. However, due to cross-targeting and instability of miRNAs, some limitations of using miRNA as cancer therapeutics still exist. In this review, the mechanisms for miRNA-mediated alteration of NF-κB expression and activation in different types of cancers will be discussed. The results of therapeutic use of NF-κB-targeting miRNA for cancer treatment will be examined. Some limitations, challenges and potential strategies in future development of miRNA as cancer therapeutics are also assessed.
Collapse
|
25
|
Lin W, Buccella D, Lippard SJ. Visualization of peroxynitrite-induced changes of labile Zn2+ in the endoplasmic reticulum with benzoresorufin-based fluorescent probes. J Am Chem Soc 2013; 135:13512-20. [PMID: 23902285 PMCID: PMC3791137 DOI: 10.1021/ja4059487] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Zn(2+) plays essential roles in biology, and the homeostasis of Zn(2+) is tightly regulated in all cells. Subcellular distribution and trafficking of labile Zn(2+), and its inter-relation with reactive nitrogen species, are poorly understood due to the scarcity of appropriate imaging tools. We report a new family of red-emitting fluorescent sensors for labile Zn(2+), ZBR1-3, based on a benzoresorufin platform functionalized with dipicolylamine or picolylamine-derived metal binding groups. In combination, the pendant amines and fluorophore afford an [N3O] binding motif that resembles that of previously reported fluorescein-based sensors of the Zinpyr family, reproducing well their binding capabilities and yielding comparable Kd values in the sub-nanomolar and picomolar ranges. The ZBR sensors display up to 8.4-fold emission fluorescence enhancement upon Zn(2+) binding in the cuvette, with similar responses obtained in live cells using standard wide-field fluorescence microscopy imaging. The new sensors localize spontaneously in the endoplasmic reticulum (ER) of various tested cell lines, allowing for organelle-specific monitoring of zinc levels in live cells. Study of ER zinc levels in neural stem cells treated with a peroxynitrite generator, Sin-1, revealed an immediate decrease in labile Zn(2+) thus providing evidence for a direct connection between ER stress and ER Zn(2+) homeostasis.
Collapse
Affiliation(s)
- Wei Lin
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Daniela Buccella
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
- Department of Chemistry, New York University, New York, New York 10003, United States
| | - Stephen J. Lippard
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| |
Collapse
|
26
|
Bátor J, Varga J, Szeberényi J. The effect of sodium nitroprusside on survival and stress signaling in PC12 rat phaeochromocytoma cells expressing a dominant negative RasH mutant protein. Biochem Cell Biol 2013; 91:230-5. [PMID: 23859017 DOI: 10.1139/bcb-2012-0078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Toxic concentrations of the second messenger nitric oxide cause cellular stress leading to cell death. Ras proteins, possible targets of nitric oxide-induced nitrosylation, may act as mediators in nitrosative stress. To analyze the possible involvement of Ras proteins in nitric oxide cytotoxicity, a PC12 rat phaeochromocytoma cell line expressing a dominant negative Ras mutant protein was used in this study. Cytotoxic concentrations of the nitric oxide donor sodium nitroprusside activated several proapoptotic mechanisms, including stimulation of the stress kinase pathways mediated by c-Jun N-terminal kinase (JNK) and p38 mitogen-activated protein kinase (MAPK), inhibition of the translation initiation factor eIF2α, induction and phosphorylation of the p53 protein, and inhibited Akt-mediated antiapoptotic signaling, independent of Ras function. Simultaneously, Ras-dependent stimulation of the prosurvival ERK pathway was also observed, followed by an increased activation of the caspase-9/caspase-3 cascade in cells with impaired Ras function. It is concluded that nitric oxide stimulation of multiple signaling pathways contributes to the cell death program, whereas concomitant activation of the Ras/ERK pathway provides a certain degree of protection.
Collapse
Affiliation(s)
- Judit Bátor
- Department of Medical Biology, Medical School, University of Pécs, Pécs, Hungary
| | | | | |
Collapse
|
27
|
Li S, Park Y, Duraisingham S, Strobel FH, Khan N, Soltow QA, Jones DP, Pulendran B. Predicting network activity from high throughput metabolomics. PLoS Comput Biol 2013; 9:e1003123. [PMID: 23861661 PMCID: PMC3701697 DOI: 10.1371/journal.pcbi.1003123] [Citation(s) in RCA: 603] [Impact Index Per Article: 54.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 05/15/2013] [Indexed: 12/26/2022] Open
Abstract
The functional interpretation of high throughput metabolomics by mass spectrometry is hindered by the identification of metabolites, a tedious and challenging task. We present a set of computational algorithms which, by leveraging the collective power of metabolic pathways and networks, predict functional activity directly from spectral feature tables without a priori identification of metabolites. The algorithms were experimentally validated on the activation of innate immune cells. Mass spectrometry based untargeted metabolomics can now profile several thousand of metabolites simultaneously. However, these metabolites have to be identified before any biological meaning can be drawn from the data. Metabolite identification is a challenging and low throughput process, therefore becomes the bottleneck of the filed. We report here a novel approach to predict biological activity directly from mass spectrometry data without a priori identification of metabolites. By unifying network analysis and metabolite prediction under the same computational framework, the organization of metabolic networks and pathways helps resolve the ambiguity in metabolite prediction to a large extent. We validated our algorithms on a set of activation experiment of innate immune cells. The predicted activities were confirmed by both gene expression and metabolite identification. This method shall greatly accelerate the application of high throughput metabolomics, as the tedious task of identifying hundreds of metabolites upfront can be shifted to a handful of validation experiments after our computational prediction.
Collapse
Affiliation(s)
- Shuzhao Li
- Emory Vaccine Center, Emory University, Atlanta, Georgia, USA.
| | | | | | | | | | | | | | | |
Collapse
|
28
|
Murphy M, Eliot K, Heuertz RM, Weiss E. Whole beetroot consumption acutely improves running performance. J Acad Nutr Diet 2012; 112:548-52. [PMID: 22709704 DOI: 10.1016/j.jand.2011.12.002] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Accepted: 11/29/2011] [Indexed: 11/19/2022]
Abstract
Nitrate ingestion improves exercise performance; however, it has also been linked to adverse health effects, except when consumed in the form of vegetables. The purpose of this study was to determine, in a double-blind crossover study, whether whole beetroot consumption, as a means for increasing nitrate intake, improves endurance exercise performance. Eleven recreationally fit men and women were studied in a double-blind placebo controlled crossover trial performed in 2010. Participants underwent two 5-km treadmill time trials in random sequence, once 75 minutes after consuming baked beetroot (200 g with ≥500 mg nitrate) and once 75 minutes after consuming cranberry relish as a eucaloric placebo. Based on paired t tests, mean running velocity during the 5-km run tended to be faster after beetroot consumption (12.3±2.7 vs 11.9±2.6 km/hour; P=0.06). During the last 1.1 miles (1.8 km) of the 5-km run, running velocity was 5% faster (12.7±3.0 vs 12.1±2.8 km/hour; P=0.02) in the beetroot trial, with no differences in velocity (P≥0.25) in the earlier portions of the 5-km run. No differences in exercise heart rate were observed between trials; however, at 1.8 km into the 5-km run, rating of perceived exertion was lower with beetroot (13.0±2.1 vs 13.7±1.9; P=0.04). Consumption of nitrate-rich, whole beetroot improves running performance in healthy adults. Because whole vegetables have been shown to have health benefits, whereas nitrates from other sources may have detrimental health effects, it would be prudent for individuals seeking performance benefits to obtain nitrates from whole vegetables, such as beetroot.
Collapse
Affiliation(s)
- Margaret Murphy
- Department of Nutrition and Dietetics, Saint Louis University, 3437 Caroline Street, St Louis, MO 63104, USA
| | | | | | | |
Collapse
|