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Aladag T, Acar G, Mogulkoc R, Baltaci AK. Improvement of neuronal and cognitive functions following treatment with 3',4' dihydroxyflavonol in experimental focal cerebral ischemia-reperfusion injury in rats. Eur J Pharmacol 2024; 976:176670. [PMID: 38795755 DOI: 10.1016/j.ejphar.2024.176670] [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: 03/06/2024] [Revised: 05/22/2024] [Accepted: 05/23/2024] [Indexed: 05/28/2024]
Abstract
INTRODUCTION Ischemia/reperfusion is a pathological condition by the restoration of perfusion and oxygenation following a period of restricted blood flow to an organ. To address existing uncertainty in the literature regarding the effects of 3', 4'-dihydroxy flavonol (DiOHF) on cerebral ischemia/reperfusion injury, our study aims to investigate the impact of DiOHF on neurological parameters, apoptosis (Caspase-3), aquaporin 4 (AQP4), and interleukin-10 (IL-10) levels in an experimental rat model of brain ischemia-reperfusion injury. MATERIALS/METHODS A total of 28 Wistar-albino male rats were used in this study. Experimental groups were formed as 1-Control, 2-Sham, 3-Ischemia-reperfusion, 4-Ischemia-reperfusion + DiOHF (10 mg/kg). The animals were anaesthetized, and the carotid arteries were ligated (ischemia) for 30 min, followed by reperfusion for 30 min. Following reperfusion, DiOHF was administered intraperitoneally to the animals at a dose of 10 mg/kg for 1 week. During the one-week period neurological scores and new object recognition tests were performed. Then, caspase 3 and AQP4 levels were determined by PCR method and IL-10 by ELISA method in hippocampus tissue samples taken from animals sacrificed under anaesthesia. RESULTS Brain ischemia reperfusion significantly increased both caspase 3 and AQP4 values in the hippocampus tissue, while decreasing IL-10 levels. However, 1-week DiOHF supplementation significantly suppressed increased caspase 3 and AQP4 levels and increased IL-10 values. While I/R also increased neurological score values, it suppressed the ability to recognize new objects, and the administered treatment effectively ameliorated the adverse effects observed, resulting in a positive outcome. CONCLUSIONS The results of the study show that brain ischemia caused by bilateral carotid occlusion in rats and subsequent reperfusion causes tissue damage, but 1-week DiOHF application has a healing effect on both hippocampus tissue and neurological parameters.
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Affiliation(s)
- Tugce Aladag
- Selcuk University, Medical Faculty, Department of Physiology, Konya, Turkey
| | - Gozde Acar
- Selcuk University, Medical Faculty, Department of Physiology, Konya, Turkey
| | - Rasim Mogulkoc
- Selcuk University, Medical Faculty, Department of Physiology, Konya, Turkey.
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Qi M, Su X, Li Z, Huang H, Wang J, Lin N, Kong X. Bibliometric analysis of research progress on tetramethylpyrazine and its effects on ischemia-reperfusion injury. Pharmacol Ther 2024; 259:108656. [PMID: 38735486 DOI: 10.1016/j.pharmthera.2024.108656] [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: 12/18/2023] [Revised: 04/22/2024] [Accepted: 05/07/2024] [Indexed: 05/14/2024]
Abstract
In recent decades, natural products have attracted worldwide attention and become one of the most important resources for pharmacological industries and medical sciences to identify novel drug candidates for disease treatment. Tetramethylpyrazine (TMP) is an alkaloid extracted from Ligusticum chuanxiong Hort., which has shown great therapeutic potential in cardiovascular and cerebrovascular diseases, liver and renal injury, as well as cancer. In this review, we analyzed 1270 papers published on the Web of Science Core Collection from 2002 to 2022 and found that TMP exerted significant protective effects on ischemia-reperfusion (I/R) injury that is the cause of pathological damages in a variety of conditions, such as ischemic stroke, myocardial infarction, acute kidney injury, and liver transplantation. TMP is limited in clinical applications to some extent due to its rapid metabolism, a short biological half-life and poor bioavailability. Obviously, the structural modification, administration methods and dosage forms of TMP need to be further investigated in order to improve its bioavailability. This review summarizes the clinical applications of TMP, elucidates its potential mechanisms in protecting I/R injury, provides strategies to improve bioavailability, which presents a comprehensive understanding of the important compound. Hopefully, the information and knowledge from this review can help researchers and physicians to better improve the applications of TMP in the clinic.
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Affiliation(s)
- Mingzhu Qi
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Xiaohui Su
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Zhuohang Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Helan Huang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Jingbo Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Na Lin
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China
| | - Xiangying Kong
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China.
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Zhang J, Hu X, Geng Y, Xiang L, Wu Y, Li Y, Yang L, Zhou K. Exploring the role of parthanatos in CNS injury: Molecular insights and therapeutic approaches. J Adv Res 2024:S2090-1232(24)00174-7. [PMID: 38704090 DOI: 10.1016/j.jare.2024.04.031] [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: 01/11/2024] [Revised: 04/27/2024] [Accepted: 04/29/2024] [Indexed: 05/06/2024] Open
Abstract
BACKGROUND Central nervous system (CNS) injury causes severe organ damage due to both damage resulting from the injury and subsequent cell death. However, there are currently no effective treatments for countering the irreversible loss of cell function. Parthanatos is a poly (ADP-ribose) polymerase 1 (PARP-1)-dependent form of programmed cell death that is partly responsible for neural cell death. Consequently, the mechanism by which parthanatos promotes CNS injury has attracted significant scientific interest. AIM OF REVIEW Our review aims to summarize the potential role of parthanatos in CNS injury and its molecular and pathophysiological mechanisms. Understanding the role of parthanatos and related molecules in CNS injury is crucial for developing effective treatment strategies and identifying important directions for future in-depth research. KEY SCIENTIFIC CONCEPTS OF REVIEW Parthanatos (from Thanatos, the personification of death according to Greek mythology) is a type of programmed cell death that is initiated by the overactivation of PARP-1. This process triggers a cascade of reactions, including the accumulation of poly(ADP-ribose) (PAR), the nuclear translocation of apoptosis-inducing factor (AIF) after its release from mitochondria, and subsequent massive DNA fragmentation caused by migration inhibitory factor (MIF) forming a complex with AIF. Secondary molecular mechanisms, such as excitotoxicity and oxidative stress-induced overactivation of PARP-1, significantly exacerbate neuronal damage following initial mechanical injury to the CNS. Furthermore, parthanatos is not only associated with neuronal damage but also interacts with various other types of cell death. This review focuses on the latest research concerning the parthanatos cell death pathway, particularly considering its regulatory mechanisms and functions in CNS damage. We highlight the associations between parthanatos and different cell types involved in CNS damage and discuss potential therapeutic agents targeting the parthanatos pathway.
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Affiliation(s)
- Jiacheng Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Xinli Hu
- Department of Orthopedics, Xuanwu Hospital of Capital Medical University, Beijing 100053, China
| | - Yibo Geng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Linyi Xiang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Yuzhe Wu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China
| | - Yao Li
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.
| | - Liangliang Yang
- School of Pharmaceutical Science, Wenzhou Medical University, Wenzhou 325027, China.
| | - Kailiang Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China; Zhejiang Provincial Key Laboratory of Orthopaedics, Wenzhou 325027, China.
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Rehman S, Nadeem A, Akram U, Sarwar A, Quraishi A, Siddiqui H, Malik MAJ, Nabi M, Ul Haq I, Cho A, Mazumdar I, Kim M, Chen K, Sepehri S, Wang R, Balar AB, Lakhani DA, Yedavalli VS. Molecular Mechanisms of Ischemic Stroke: A Review Integrating Clinical Imaging and Therapeutic Perspectives. Biomedicines 2024; 12:812. [PMID: 38672167 PMCID: PMC11048412 DOI: 10.3390/biomedicines12040812] [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: 02/29/2024] [Revised: 03/28/2024] [Accepted: 04/01/2024] [Indexed: 04/28/2024] Open
Abstract
Ischemic stroke poses a significant global health challenge, necessitating ongoing exploration of its pathophysiology and treatment strategies. This comprehensive review integrates various aspects of ischemic stroke research, emphasizing crucial mechanisms, therapeutic approaches, and the role of clinical imaging in disease management. It discusses the multifaceted role of Netrin-1, highlighting its potential in promoting neurovascular repair and mitigating post-stroke neurological decline. It also examines the impact of blood-brain barrier permeability on stroke outcomes and explores alternative therapeutic targets such as statins and sphingosine-1-phosphate signaling. Neurocardiology investigations underscore the contribution of cardiac factors to post-stroke mortality, emphasizing the importance of understanding the brain-heart axis for targeted interventions. Additionally, the review advocates for early reperfusion and neuroprotective agents to counter-time-dependent excitotoxicity and inflammation, aiming to preserve tissue viability. Advanced imaging techniques, including DWI, PI, and MR angiography, are discussed for their role in evaluating ischemic penumbra evolution and guiding therapeutic decisions. By integrating molecular insights with imaging modalities, this interdisciplinary approach enhances our understanding of ischemic stroke and offers promising avenues for future research and clinical interventions to improve patient outcomes.
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Affiliation(s)
- Sana Rehman
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (M.N.); (A.C.); (I.M.); (M.K.); (K.C.); (S.S.); (R.W.); (A.B.B.); (D.A.L.); (V.S.Y.)
| | - Arsalan Nadeem
- Department of Medicine, Allama Iqbal Medical College, Lahore 54700, Pakistan;
| | - Umar Akram
- Department of Medicine, Allama Iqbal Medical College, Lahore 54700, Pakistan;
| | - Abeer Sarwar
- Department of Medicine, Fatima Memorial Hospital College of Medicine and Dentistry, Lahore 54000, Pakistan; (A.S.); (H.S.)
| | - Ammara Quraishi
- Department of Medicine, Dow University of Health Sciences, Karachi 74200, Pakistan;
| | - Hina Siddiqui
- Department of Medicine, Fatima Memorial Hospital College of Medicine and Dentistry, Lahore 54000, Pakistan; (A.S.); (H.S.)
| | | | - Mehreen Nabi
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (M.N.); (A.C.); (I.M.); (M.K.); (K.C.); (S.S.); (R.W.); (A.B.B.); (D.A.L.); (V.S.Y.)
| | - Ihtisham Ul Haq
- Department of Medicine, Amna Inayat Medical College, Sheikhupura 54300, Pakistan;
| | - Andrew Cho
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (M.N.); (A.C.); (I.M.); (M.K.); (K.C.); (S.S.); (R.W.); (A.B.B.); (D.A.L.); (V.S.Y.)
| | - Ishan Mazumdar
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (M.N.); (A.C.); (I.M.); (M.K.); (K.C.); (S.S.); (R.W.); (A.B.B.); (D.A.L.); (V.S.Y.)
| | - Minsoo Kim
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (M.N.); (A.C.); (I.M.); (M.K.); (K.C.); (S.S.); (R.W.); (A.B.B.); (D.A.L.); (V.S.Y.)
| | - Kevin Chen
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (M.N.); (A.C.); (I.M.); (M.K.); (K.C.); (S.S.); (R.W.); (A.B.B.); (D.A.L.); (V.S.Y.)
| | - Sadra Sepehri
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (M.N.); (A.C.); (I.M.); (M.K.); (K.C.); (S.S.); (R.W.); (A.B.B.); (D.A.L.); (V.S.Y.)
| | - Richard Wang
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (M.N.); (A.C.); (I.M.); (M.K.); (K.C.); (S.S.); (R.W.); (A.B.B.); (D.A.L.); (V.S.Y.)
| | - Aneri B. Balar
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (M.N.); (A.C.); (I.M.); (M.K.); (K.C.); (S.S.); (R.W.); (A.B.B.); (D.A.L.); (V.S.Y.)
| | - Dhairya A. Lakhani
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (M.N.); (A.C.); (I.M.); (M.K.); (K.C.); (S.S.); (R.W.); (A.B.B.); (D.A.L.); (V.S.Y.)
| | - Vivek S. Yedavalli
- Russell H. Morgan Department of Radiology and Radiological Sciences, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (M.N.); (A.C.); (I.M.); (M.K.); (K.C.); (S.S.); (R.W.); (A.B.B.); (D.A.L.); (V.S.Y.)
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Yang R, Hu N, Liu TY, Qu Y, Liu J, Wang JH, Yang BF, Li CL. Salvianolic acid A provides neuroprotective effects on cerebral ischemia-reperfusion injury in rats via PKA/CREB/c-Fos signaling pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 124:155326. [PMID: 38185068 DOI: 10.1016/j.phymed.2023.155326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 11/13/2023] [Accepted: 12/27/2023] [Indexed: 01/09/2024]
Abstract
BACKGROUND Cerebral ischemia-reperfusion injury (CIRI) is a phenomenon that pathological injury of ischemic brain tissue is further aggravated after the restoration of blood supply. The complex pathological mechanism of CIRI has led to the failure of multiple neuroprotective agents in clinical studies. Salvianolic acid A (SAA) is a neuroprotective extract from Salvia miltiorrhiza Bge., with significant pharmacological activities in the treatment of brain injury. However, the neuroprotective mechanisms of SAA remain unclear. PURPOSE To explore the potential protective effect of SAA on CIRI and its mechanism, and to provide experimental basis for the research of new drugs for CIRI. STUDY DESIGN A model of transient middle cerebral artery occlusion (tMCAO) in rats was used to simulate clinical CIRI, and the neuroprotective effect of SAA on tMCAO rats was investigated within 14 days after reperfusion. The improvement effects of SAA on cognitive impairment of tMCAO rats were investigated by behavioral tests from days 7-14. Finally, the neuroprotective mechanism of SAA was investigated on day 14. METHODS The neuroprotective effects and mechanism of SAA were investigated by behavioral tests, HE and TUNEL staining, RNA sequence (RNA-seq) analysis and Western blot in tMCAO rats. RESULTS The brain protective effects of SAA were achieved by alleviating cerebral infarction, cerebral edema, cerebral atrophy and nerve injury in tMCAO rats. Meanwhile, SAA could effectively improve the cognitive impairment and pathological damage of hippocampal tissue, and inhibit cell apoptosis in tMCAO rats. Besides, SAA could provide neuroprotective effects by up-regulating the expression of Bcl-2, inhibiting the activation of Caspase 3, and regulating PKA/CREB/c-Fos signaling pathway. CONCLUSION SAA can significantly improve brain injury and cognitive impairment in CIRI rats, and this neuroprotective effect may be achieved through the anti-apoptotic effect and the regulation of PKA/CREB/c-Fos signaling pathway.
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Affiliation(s)
- Ran Yang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Nan Hu
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Ting-Yu Liu
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Yue Qu
- Department of Traditional Chinese Medicine, Shenyang Pharmaceutical University, Shenyang, Liaoning, PR China
| | - Jie Liu
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Jin-Hui Wang
- Department of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, PR China
| | - Bao-Feng Yang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China; Department of Pharmacy, Harbin Medical University, Harbin, Heilongjiang 150081, PR China.
| | - Chun-Li Li
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China.
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Kim JY, Hwang M, Choi NY, Koh SH. Inhibition of the NLRP3 Inflammasome Activation/Assembly through the Activation of the PI3K Pathway by Naloxone Protects Neural Stem Cells from Ischemic Condition. Mol Neurobiol 2023; 60:5330-5342. [PMID: 37300646 DOI: 10.1007/s12035-023-03418-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 05/31/2023] [Indexed: 06/12/2023]
Abstract
Naloxone is a well-known opioid antagonist and has been suggested to have neuroprotective effects in cerebral ischemia. We investigated whether naloxone exhibits anti-inflammatory and neuroprotective effects in neural stem cells (NSCs) injured by oxygen-glucose deprivation (OGD), whether it affects the NOD-like receptor protein 3 (NLRP3) inflammasome activation/assembly, and whether the role of the phosphatidylinositol 3-kinase (PI3K) pathway is important in the control of NLRP3 inflammasome activation/assembly by naloxone. Primary cultured NSCs were subjected to OGD and treated with different concentrations of naloxone. Cell viability, proliferation, and the intracellular signaling proteins associated with the PI3K pathway and NLRP3 inflammasome activation/assembly were evaluated in OGD-injured NSCs. OGD significantly reduced survival, proliferation, and migration and increased apoptosis of NSCs. However, treatment with naloxone significantly restored survival, proliferation, and migration and decreased apoptosis of NSCs. Moreover, OGD markedly increased NLRP3 inflammasome activation/assembly and cleaved caspase-1 and interleukin-1β levels in NSCs, but naloxone significantly attenuated these effects. These neuroprotective and anti-inflammatory effects of naloxone were eliminated when cells were treated with PI3K inhibitors. Our results suggest that NLRP3 inflammasome is a potential therapeutic target and that naloxone reduces ischemic injury in NSCs by inhibiting NLRP3 inflammasome activation/assembly mediated by the activation of the PI3K signaling pathway.
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Affiliation(s)
- Ji Young Kim
- Department of Nuclear Medicine, Hanyang University College of Medicine, Hanyang University Guri Hospital, 153, Gyeongchun-ro, Guri-si, Gyeonggi-do, 11923, Republic of Korea
| | - Mina Hwang
- Department of Neurology, Hanyang University College of Medicine, 153, Gyeongchun-ro, Guri-si, Gyeonggi-do, 11923, Republic of Korea
| | - Na-Young Choi
- Department of Neurology, Hanyang University College of Medicine, 153, Gyeongchun-ro, Guri-si, Gyeonggi-do, 11923, Republic of Korea
| | - Seong-Ho Koh
- Department of Neurology, Hanyang University College of Medicine, 153, Gyeongchun-ro, Guri-si, Gyeonggi-do, 11923, Republic of Korea.
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Shoshan-Barmatz V, Arif T, Shteinfer-Kuzmine A. Apoptotic proteins with non-apoptotic activity: expression and function in cancer. Apoptosis 2023; 28:730-753. [PMID: 37014578 PMCID: PMC10071271 DOI: 10.1007/s10495-023-01835-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2023] [Indexed: 04/05/2023]
Abstract
Apoptosis is a process of programmed cell death in which a cell commits suicide while maintaining the integrity and architecture of the tissue as a whole. Apoptosis involves activation of one of two major pathways: the extrinsic pathway, where extracellular pro-apoptotic signals, transduced through plasma membrane death receptors, activate a caspase cascade leading to apoptosis. The second, the intrinsic apoptotic pathway, where damaged DNA, oxidative stress, or chemicals, induce the release of pro-apoptotic proteins from the mitochondria, leading to the activation of caspase-dependent and independent apoptosis. However, it has recently become apparent that proteins involved in apoptosis also exhibit non-cell death-related physiological functions that are related to the cell cycle, differentiation, metabolism, inflammation or immunity. Such non-conventional activities were predominantly reported in non-cancer cells although, recently, such a dual function for pro-apoptotic proteins has also been reported in cancers where they are overexpressed. Interestingly, some apoptotic proteins translocate to the nucleus in order to perform a non-apoptotic function. In this review, we summarize the unconventional roles of the apoptotic proteins from a functional perspective, while focusing on two mitochondrial proteins: VDAC1 and SMAC/Diablo. Despite having pro-apoptotic functions, these proteins are overexpressed in cancers and this apparent paradox and the associated pathophysiological implications will be discussed. We will also present possible mechanisms underlying the switch from apoptotic to non-apoptotic activities although a deeper investigation into the process awaits further study.
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Affiliation(s)
- Varda Shoshan-Barmatz
- Department of Life Sciences, Ben-Gurion University of the Negev, 84105, Beer Sheva, Israel.
- National Institute for Biotechnology in the Negev, Beer Sheva, Israel.
| | - Tasleem Arif
- Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY, 10029, USA
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Althurwi HN, Abdel-Rahman RF, Soliman GA, Ogaly HA, Alkholifi FK, Abd-Elsalam RM, Alqasoumi SI, Abdel-Kader MS. Protective Effect of Beta-Carotene against Myeloperoxidase- Mediated Oxidative Stress and Inflammation in Rat Ischemic Brain Injury. Antioxidants (Basel) 2022; 11:antiox11122344. [PMID: 36552554 PMCID: PMC9774247 DOI: 10.3390/antiox11122344] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/19/2022] [Accepted: 11/25/2022] [Indexed: 11/29/2022] Open
Abstract
Oxidative stress and inflammatory reaction play critical roles in ischemia/reperfusion (I/R) injury in the brain. β-carotene (βCAR) is a naturally occurring pigment present in fruits and vegetables that expresses antioxidant and anti-inflammatory activities. This study was conducted to investigate the involvement of Bcl2/Bax and NF-κB signaling pathways in the potential protective role of βCAR against brain injury in a middle cerebral artery occlusion (MCAO) rat model. A focal brain ischemia model was created for 2 h, followed by reperfusion. Rats were given 10 and 20 mg/kg of βCAR for 7 days orally before induction of ischemia, at the start of reperfusion, and 3 days after ischemia. Scores of neurological deficit were rated 24 h after induction of ischemia. Motor coordination and spontaneous coordinate activities were assessed using rotarod and activity cage, respectively. After 2 h of the last dose, the animals were killed and their brains were extracted for further examinations. The results of the study show that βCAR diminished the score of neurological deficits and ameliorated motor coordination, balance, and locomotor activity in the I/R control group. Further, βCAR resulted in diminution of malondialdehyde (MDA) and augmentation of reduced glutathione (GSH) contents, as well as the elevation of superoxide dismutase (SOD), glutathione peroxidase (GPx), and catalase (CAT) enzyme activities in the brain homogenates of I/R rats. βCAR treatment significantly reduced nuclear factor kappa B (NF-κB) brain content and myeloperoxidase (MPO) activity and ameliorated the histological alterations in the brain tissues. βCAR significantly suppressed Bcl-2-associated X protein (Bax) and caspase-3 expression, as well as upregulated B-cell lymphoma-2 (Bcl-2) expression, suggesting a neuroprotective potential via downregulating NF-kB and protecting the rat brain against the I/R-associated apoptotic injury.
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Affiliation(s)
- Hassan N. Althurwi
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | | | - Gamal A. Soliman
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
- Department of Pharmacology, College of Veterinary Medicine, Cairo University, Giza 12613, Egypt
| | - Hanan A. Ogaly
- Department of Chemistry, College of Science, King Khalid University, Abha 61421, Saudi Arabia
- Department of Biochemistry, College of Veterinary Medicine, Cairo University, Giza 12613, Egypt
| | - Faisal K. Alkholifi
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
| | - Reham M. Abd-Elsalam
- Department of Pathology, College of Veterinary Medicine, Cairo University, Giza 12613, Egypt
- Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T3R 1J3, Canada
| | - Saleh I. Alqasoumi
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Maged S. Abdel-Kader
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
- Department of Pharmacognosy, College of Pharmacy, Alexandria University, Alexandria 21215, Egypt
- Correspondence:
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Wang J, Xia Z, Sheng P, Shen M, Ding L, Liu D, Yan BC. Enhanced autophagy interacting proteins negatively correlated with the activation of apoptosis-related caspase family proteins after focal ischemic stroke of young rats. BMC Neurosci 2022; 23:55. [PMID: 36171540 PMCID: PMC9516802 DOI: 10.1186/s12868-022-00740-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 09/07/2022] [Indexed: 11/21/2022] Open
Abstract
Background Neuronal injury induced in young rats by cerebral ischemia reperfusion (CIR) is known to differ substantially from that in adult rats. In the present study, we investigated the specific differences in neuronal injury induced by focal CIR between young and adult rats. Results 2, 3, 5-triphenyl tetrazolium chloride (TTC) staining revealed a gradual increase in the infarct volume of both young and adult rats in accordance with I/R times and was significantly lower in young rats than in adult rats under the same conditions. The number of cells in the cortex showing immunoreactivity for neuronal nuclei (NeuN) gradually decreased in both young and adult rats in accordance with I/R times; these numbers were significantly higher in young rats than in adult rats under the same conditions. Similarly, as the duration of I/R increased, the degree of glial activation in the cortex penumbra region became more severe in both young and adult groups; however, glial activation was significantly lower in the cortex penumbra region of young rats when compared with that in adult rats. In addition, the expression of Beclin-1 was significantly higher in the infarct penumbra of young rats than adult rats and was more frequently co-expressed with neurons. The levels of autophagy-related proteins increased significantly in the penumbra region after I/R in both young and adult groups, this increase was more pronounced in young rats than in adult rats. Following CIR, analysis revealed significantly lower levels of pro-apoptosis-related factors and significantly higher levels of anti-apoptosis-related proteins in the young rats than in adult rats. Conclusions Collectively, the present results suggest that the the reduced levels of neuronal death after CIR in young rats were closely related to enhanced levels of autophagy and reduced levels of pro-apoptosis in neurons. Supplementary Information The online version contains supplementary material available at 10.1186/s12868-022-00740-w.
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Affiliation(s)
- Jie Wang
- Medical College, Institute of Translational Medicine, Department of Neurology, Affiliated Hospital of Yangzhou University, Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University, Yangzhou, 225001, People's Republic of China.,Department of Peripheral Vascular Surgery, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People's Republic of China
| | - Zihao Xia
- Medical College, Institute of Translational Medicine, Department of Neurology, Affiliated Hospital of Yangzhou University, Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University, Yangzhou, 225001, People's Republic of China
| | - Peng Sheng
- Medical College, Institute of Translational Medicine, Department of Neurology, Affiliated Hospital of Yangzhou University, Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University, Yangzhou, 225001, People's Republic of China
| | - Mengmeng Shen
- Medical College, Institute of Translational Medicine, Department of Neurology, Affiliated Hospital of Yangzhou University, Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University, Yangzhou, 225001, People's Republic of China
| | - Lidong Ding
- Department of Neurology, Taizhou Second People's Hospital, Taizhou, 225500, People's Republic of China
| | - Dezhi Liu
- Department of Neurology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, No.528 Zhang-Heng Road, Pu-Dong New Area, Shanghai, 201203, People's Republic of China.
| | - Bing Chun Yan
- Medical College, Institute of Translational Medicine, Department of Neurology, Affiliated Hospital of Yangzhou University, Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Yangzhou University, Yangzhou, 225001, People's Republic of China. .,Jiangsu Key Laboratory of Zoonosis, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, 225009, People's Republic of China.
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10
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Topography of neurotrophins in the rat neocortex and their role in neuron apoptosis after experimental ischemic stroke. J Chem Neuroanat 2022; 124:102122. [PMID: 35718293 DOI: 10.1016/j.jchemneu.2022.102122] [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: 04/12/2022] [Revised: 06/12/2022] [Accepted: 06/14/2022] [Indexed: 11/20/2022]
Abstract
Neuronal loss due to apoptosis after ischemic injury depends on the trophic support of neurons and cytoprotective effects of neurotrophins (NTs). Different NTs may activate both pro- and antiapoptotic factors. Their distribution in the ischemic core (IC) and penumbra (IP) has been poorly studied. The available data on the localization of NTs in the ischemic brain are contradictory and depend to a certain degree on the pathogenetic model used. The distribution of NTs in different layers of the ischemic cortex is also largely unknown hindering our understanding of their exact effects and targets in different zones of the ischemic brain. We examined the immunolocalization of brain-derived neurotrophic factor (BDNF), neurotrophin-3, and glial cell line-derived neurotrophic factor (GDNF) in the parietal cortex using a rat model of ischemic stroke due to permanent occlusion of the middle cerebral artery. The spatial density of immunoreactive (IR) cells varied across the cortical layers and changed with time after ischemic injury. Their distribution in the IC differed considerably from that in the IP. The immunolocalization of neurotrophins in the contralateral hemisphere was similar to that in IP. We also studied the distribution of pro- and anti-apoptotic factors in IC and IP with and without intravenous BDNF administration. In the model without BDNF administration, the proportions of Bcl-2-, p53-, caspase-3-, and Mdm2-IR cells showed different dynamics during the ischemic period. In the model with BDNF administration, Mdm2 immunoreactivity was mainly observed in pyramidal cells of layers V/VI, and Bcl-2, in interneurons of layers II and III. The dynamics of p53 immunoreactivity was opposite to that of caspase-3 throughout the ischemic period. The present results suggest that after ischemic injury, 1) the number of neurotrophin-positive cells increases in the early ischemic period and decreases afterwards; 2) there is a close metabolic relationship between astrocytes and neurons contributing to their adaptation to ischemic conditions; 3) the IP borders undergo constant changes; 4) in the IP, neuronal loss occurs mainly by apoptotic pathway throughout the ischemic period; 5) BDNF may enhance considerably antiapoptotic mechanisms with a predominance of Mdm-2 activity in pyramidal neurons.
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11
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Asada M, Hayashi H, Takagi N. Possible Involvement of DNA Methylation and Protective Effect of Zebularine on Neuronal Cell Death after Glutamate Excitotoxity. Biol Pharm Bull 2022; 45:770-779. [PMID: 35650104 DOI: 10.1248/bpb.b22-00147] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Neuronal cell death after cerebral ischemia consists various steps including glutamate excitotoxity. Excessive Ca2+ influx through the N-methyl-D-aspartate (NMDA) receptor, which is one of the ionotropic glutamate receptors, plays a central role in neuronal cell death after cerebral ischemia. We previously reported that DNA methylation is transiently increased in neurons during ischemic injury and that this aberrant DNA methylation is accompanied by neuronal cell death. Therefore, we performed the present experiments on glutamate excitotoxicity to gain further insight into DNA methylation involvement in the neuronal cell death. We demonstrated that knockdown of DNA methyltransferase (DNMT)1, DNMT3a, or DNMT3b gene in Neuro2a cells was performed to examine which DNMTs were more important for neuronal cell death after glutamate excitotoxicity. Although we confirmed a decrease in the levels of the target DNMT protein after small interfering RNA (siRNA) transfection, the Neuro2a cells were not protected from injury by transfection with siRNA for each DNMT. We next revealed that the pharmacological inhibitor of DNMTs protected against glutamate excitotoxicity in Neuro2a cells and also in primary cultured cortical neurons. This protective effect was associated with a decrease in the number of 5-methylcytosine (5 mC)-positive cells under glutamate excitotoxicity. In addition, the increased level of cleaved caspase-3 was also reduced by a DNMT inhibitor. Our results suggest the possibility that at least 2 or all DNMTs functionally would cooperate to activate DNA methylation after glutamate excitotoxicity and that inhibition of DNA methylation in neurons after cerebral ischemia might become a strategy to reduce the neuronal injury.
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Affiliation(s)
- Mayumi Asada
- Department of Applied Biochemistry, Tokyo University of Pharmacy and Life Sciences
| | - Hideki Hayashi
- Department of Applied Biochemistry, Tokyo University of Pharmacy and Life Sciences
| | - Norio Takagi
- Department of Applied Biochemistry, Tokyo University of Pharmacy and Life Sciences
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12
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Van Breedam E, Nijak A, Buyle-Huybrecht T, Di Stefano J, Boeren M, Govaerts J, Quarta A, Swartenbroekx T, Jacobs EZ, Menten B, Gijsbers R, Delputte P, Alaerts M, Hassannia B, Loeys B, Berneman Z, Timmermans JP, Jorens PG, Vanden Berghe T, Fransen E, Wouters A, De Vos WH, Ponsaerts P. Luminescent Human iPSC-Derived Neurospheroids Enable Modeling of Neurotoxicity After Oxygen-glucose Deprivation. Neurotherapeutics 2022; 19:550-569. [PMID: 35289376 PMCID: PMC9226265 DOI: 10.1007/s13311-022-01212-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/14/2022] [Indexed: 12/26/2022] Open
Abstract
Despite the considerable impact of stroke on both the individual and on society, a neuroprotective therapy for stroke patients is missing. This is partially due to the current lack of a physiologically relevant human in vitro stroke model. To address this problem, we have developed a luminescent human iPSC-derived neurospheroid model that enables real-time read-out of neural viability after ischemia-like conditions. We subjected 1- and 4-week-old neurospheroids, generated from iPSC-derived neural stem cells, to 6 h of oxygen-glucose deprivation (OGD) and measured neurospheroid luminescence. For both, we detected a decrease in luminescent signal due to ensuing neurotoxicity, as confirmed by conventional LDH assay and flow cytometric viability analysis. Remarkably, 1-week-old, but not 4-week-old neurospheroids recovered from OGD-induced injury, as evidenced by their reduced but overall increasing luminescence over time. This underscores the need for more mature neurospheroids, more faithfully recapitulating the in vivo situation. Furthermore, treatment of oxygen- and glucose-deprived neurospheroids with the pan-caspase inhibitor Z-VAD-FMK did not increase overall neural survival, despite its successful attenuation of apoptosis, in a human-based 3D environment. Nevertheless, owing to its three-dimensional organization and real-time viability reporting potential, the luminescent neurospheroids may become readily adopted in high-throughput screens aimed at identification of new therapeutic agents to treat acute ischemic stroke patients.
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Affiliation(s)
- Elise Van Breedam
- Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (Vaxinfectio), University of Antwerp, 2610, Wilrijk, Belgium
| | - Aleksandra Nijak
- Cardiogenomics Group, Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, 2650, Edegem, Belgium
| | - Tamariche Buyle-Huybrecht
- Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (Vaxinfectio), University of Antwerp, 2610, Wilrijk, Belgium
- Laboratory for Microbiology, Parasitology and Hygiene, University of Antwerp, 2610, Wilrijk, Belgium
| | - Julia Di Stefano
- Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (Vaxinfectio), University of Antwerp, 2610, Wilrijk, Belgium
| | - Marlies Boeren
- Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (Vaxinfectio), University of Antwerp, 2610, Wilrijk, Belgium
- Laboratory for Microbiology, Parasitology and Hygiene, University of Antwerp, 2610, Wilrijk, Belgium
| | - Jonas Govaerts
- Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (Vaxinfectio), University of Antwerp, 2610, Wilrijk, Belgium
- Laboratory for Microbiology, Parasitology and Hygiene, University of Antwerp, 2610, Wilrijk, Belgium
| | - Alessandra Quarta
- Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (Vaxinfectio), University of Antwerp, 2610, Wilrijk, Belgium
| | - Tine Swartenbroekx
- Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (Vaxinfectio), University of Antwerp, 2610, Wilrijk, Belgium
| | - Eva Z Jacobs
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University Hospital, 9000, Ghent, Belgium
| | - Björn Menten
- Center for Medical Genetics Ghent, Department of Biomolecular Medicine, Ghent University Hospital, 9000, Ghent, Belgium
| | - Rik Gijsbers
- Laboratory for Molecular Virology and Gene Therapy, Department of Pharmaceutical and Pharmacological Sciences, Faculty of Medicine, KU Leuven, 3000, Leuven, Belgium
- Leuven Viral Vector Core (LVVC), KU Leuven, 3000, Leuven, Belgium
| | - Peter Delputte
- Laboratory for Microbiology, Parasitology and Hygiene, University of Antwerp, 2610, Wilrijk, Belgium
| | - Maaike Alaerts
- Cardiogenomics Group, Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, 2650, Edegem, Belgium
| | - Behrouz Hassannia
- Center for Inflammation Research (IRC), VIB-UGent, 9052, Zwijnaarde, Belgium
- Laboratory of Pathophysiology, University of Antwerp, 2610, Wilrijk, Belgium
| | - Bart Loeys
- Cardiogenomics Group, Center of Medical Genetics, University of Antwerp and Antwerp University Hospital, 2650, Edegem, Belgium
| | - Zwi Berneman
- Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (Vaxinfectio), University of Antwerp, 2610, Wilrijk, Belgium
| | | | - Philippe G Jorens
- Laboratory of Experimental Medicine and Pediatrics (LEMP), University of Antwerp, 2610, Wilrijk, Belgium
- Department of Intensive Care Medicine, Antwerp University Hospital, 2650, Edegem, Belgium
| | - Tom Vanden Berghe
- Center for Inflammation Research (IRC), VIB-UGent, 9052, Zwijnaarde, Belgium
- Laboratory of Pathophysiology, University of Antwerp, 2610, Wilrijk, Belgium
| | - Erik Fransen
- StatUa Center for Statistics, University of Antwerp, 2000, Antwerp, Belgium
- Human Molecular Genetics group, Center of Medical Genetics, University of Antwerp, 2610, Wilrijk, Belgium
| | - An Wouters
- Center for Oncological Research (CORE), Integrated Personalized and Precision Oncology Network (IPPON), University of Antwerp, 2610, Wilrijk, Belgium
| | - Winnok H De Vos
- Laboratory of Cell Biology and Histology, University of Antwerp, 2610, Wilrijk, Belgium
| | - Peter Ponsaerts
- Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (Vaxinfectio), University of Antwerp, 2610, Wilrijk, Belgium.
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13
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OUP accepted manuscript. J Pharm Pharmacol 2022; 74:843-860. [DOI: 10.1093/jpp/rgac015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 02/19/2022] [Indexed: 12/07/2022]
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14
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AMPK inhibitor BML-275 induces neuroprotection through decreasing cyt c and AIF expression after transient brain ischemia. Bioorg Med Chem 2021; 52:116522. [PMID: 34837819 DOI: 10.1016/j.bmc.2021.116522] [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: 07/22/2021] [Revised: 11/09/2021] [Accepted: 11/16/2021] [Indexed: 11/23/2022]
Abstract
Stroke is a major public health problem with an imperative need for a more effective and tolerated therapy. Neuroprotective therapy may be an effective therapeutic intervention for stroke. The morbidity and mortality of stroke-induced secondary brain injury is mainly caused by neuronal apoptosis, which can be executed in a caspase-dependent or apoptosis inducing factor (AIF)-dependent manner. As apoptosis is an energy-dependent process with a relative time delay, abnormal energy metabolism could be a significant and fundamental pathophysiological basis of stroke. To our knowledge, convincible evidences that AMPK inhibition exerts neuroprotection in cerebral ischemia injury via anti-apoptosis remain to be investigated. Accordingly, the aims of this study were to investigate the protective effects of AMPK inhibitor BML-275 on cerebral ischemic/reperfusion (I/R) injury and to elucidate the underlying mechanisms. Cerebral ischemia was induced by transient middle cerebral artery occlusion (tMCAO) in male C57BL/6 mice. The therapeutic effects of BML-275 were evaluated by infarct sizes, neurological scores and the proportion of apoptotic neurons after 24 h of reperfusion. The cell apoptosis markers cyt c and AIF were also evaluated. The results showed that intraperitoneally administration of BML-275 alleviate the cerebral infarction, neurological deficit and neuronal apoptosis induced by MCAO. BML-275 simultaneously induces anti-apoptosis and decreases the expression of cyt c and AIF. This study supports the hypothesis that anti-apoptosis is one of potential neuroprotective strategies for the treatment of stroke.
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15
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Therapeutic Effects of Hydroalcoholic Extracts from the Ancient Apple Mela Rosa dei Monti Sibillini in Transient Global Ischemia in Rats. Pharmaceuticals (Basel) 2021; 14:ph14111106. [PMID: 34832888 PMCID: PMC8619919 DOI: 10.3390/ph14111106] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 10/22/2021] [Accepted: 10/25/2021] [Indexed: 12/27/2022] Open
Abstract
The Mela Rosa dei Monti Sibillini is an ancient apple variety cultivated by Romans in the foothills of the Sibillini Mountains, central Italy, showing potential as a source of nutraceuticals. The purpose of this study was to evaluate the protective effects of the hydroalcoholic extracts from the peel (APE) and pulp (APP) of this fruit in an animal model of transient global ischemia. Chemical constituents were analyzed by liquid chromatography–mass spectrometry (LC-DAD-MSn) indicating several polyphenols such as B-type procyanidins, quercetin derivatives and hydroxycinnamic acids as the main bioactive components. Acute pre-treatment of extracts (30 mg/kg, i.p.) significantly decreased the brain levels of the pro-inflammatory cytokines IL-1β (p < 0.01) and TNF-α (p < 0.001 and p < 0.01 for APE and APP, respectively), the expression of caspase-3 (p < 0.01, For APE) and MDA (p < 0.05), a lipid peroxidation biomarker in rats. Both extracts restricted the pathological changes of the brain induced by ischemic stroke in hematoxylin and eosin assay. Moreover, they improved the scores of behavioral tests in grid-walking and modified neurological severity scores (mNSS) tests. In conclusion, these results proved this ancient Italian apple is a source of nutraceuticals able to protect/prevent damage from brain ischemia.
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D'Orsi B, Niewidok N, Düssmann H, Prehn JHM. Mitochondrial Carrier Homolog 2 Functionally Co-operates With BH3 Interacting-Domain Death Agonist in Promoting Ca 2+-Induced Neuronal Injury. Front Cell Dev Biol 2021; 9:750100. [PMID: 34708044 PMCID: PMC8542846 DOI: 10.3389/fcell.2021.750100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 09/10/2021] [Indexed: 12/28/2022] Open
Abstract
The BH3 interacting-domain death agonist (BID) is a pro-apoptotic member of the Bcl-2 protein family. While proteolytic processing of BID links death receptor-induced apoptosis to the mitochondrial apoptosis pathway, we previously showed that full length BID also translocates to mitochondria during Ca2+-induced neuronal cell death. Moreover, mitochondrial carrier homolog 2 (MTCH2) was identified as a mitochondrial protein that interacts with BID during cell death. We started our studies by investigating the effect of Mtch2 silencing in a well-established model of Ca2+-induced mitochondrial permeability transition pore opening in non-neuronal HCT116 cells. We found that silencing of Mtch2 inhibited mitochondrial swelling and the associated decrease in mitochondrial energetics, suggesting a pro-death function for MTCH2 during Ca2+-induced injury. Next, we explored the role of BID and MTCH2 in mediating Ca2+-induced injury in primary cortical neurons triggered by prolonged activation of NMDA glutamate receptors. Analysis of intracellular Ca2+ transients, using time-lapse confocal microscopy, revealed that neurons lacking Bid showed markedly reduced Ca2+ levels during the NMDA excitation period. These Ca2+ transients were further decreased when Mtch2 was also silenced. Collectively, our data suggest that BID and MTCH2 functionally interact to promote Ca2+-induced neuronal injury.
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Affiliation(s)
- Beatrice D'Orsi
- Department of Physiology & Medical Physics, Centre for the Study of Neurological Disorders, Royal College of Surgeons in Ireland, Dublin, Ireland.,Institute of Neuroscience, Italian National Research Council, Pisa, Italy
| | - Natalia Niewidok
- Department of Physiology & Medical Physics, Centre for the Study of Neurological Disorders, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Heiko Düssmann
- Department of Physiology & Medical Physics, Centre for the Study of Neurological Disorders, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Jochen H M Prehn
- Department of Physiology & Medical Physics, Centre for the Study of Neurological Disorders, Royal College of Surgeons in Ireland, Dublin, Ireland
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Zhao J, Dong L, Huo T, Cheng J, Li X, Huangfu X, Sun S, Wang H, Li L. O-GlcNAc Transferase (OGT) Protects Cerebral Neurons from Death During Ischemia/Reperfusion (I/R) Injury by Modulating Drp1 in Mice. Neuromolecular Med 2021; 24:299-310. [PMID: 34705256 DOI: 10.1007/s12017-021-08688-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2020] [Accepted: 09/13/2021] [Indexed: 01/01/2023]
Abstract
Previous studies have demonstrated that increased O-linked N-acetylglucosamine (O-GlcNAc) level could promote cell survival following environmental stresses. This study aimed to explore the role of O-GlcNAc transferase (OGT) during cerebral ischemia/reperfusion (I/R) injury. The mouse model with cerebral I/R injury was induced by middle cerebral artery occlusion/reperfusion (MCAO/R). The expression of ogt in brain tissues was detected by qRT-PCR, Western blot, and immunohistochemistry (IHC) staining assay. Neurological deficit was evaluated using a modified scoring system. The infarct volume was assessed by TTC staining assay. Neuronal apoptosis in brain tissues was evaluated by TUNEL staining assay. The level of cleaved caspase-3 in brain tissues was detected by Western blot and IHC staining assay. The expression of critical proteins involved in mitochondrial fission, including OPA1, Mfn1, and Mfn2, as well as Mff and Drp1 was detected by Western blot and IHC, respectively. The expression of ogt during cerebral I/R injury was significantly upregulated. Ogt knockdown significantly increased neurological score and infarct volume in I/R-induced mice. Meanwhile, ogt knockdown significantly enhanced neuronal apoptosis and cleaved caspase-3 level in brain tissues of I/R-induced mice. In addition, ogt knockdown markedly decreased serine 637 phosphorylation level of mitochondrial fission protein dynamin-related protein 1 (Drp1) and promoted Drp1 translocation from the cytosol to the mitochondria. Moreover, the specific Drp1 inhibitor mdivi-1 effectively attenuated ogt knockdown-induced brain injury of I/R-stimulated mice in vivo. Our study revealed that OGT protects against cerebral I/R injury by inhibiting the function of Drp1 in mice, suggesting that ogt may be a potential therapeutic target for cerebral I/R injury.
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Affiliation(s)
- Jingru Zhao
- Department of Neurology, Hebei General Hospital, No.348 Heping West Road, Shijiazhuang, 050051, Hebei, P. R. China
| | - Lipeng Dong
- Department of Neurology, Hebei General Hospital, No.348 Heping West Road, Shijiazhuang, 050051, Hebei, P. R. China
| | - Tiantian Huo
- Department of Neurology, Hebei General Hospital, No.348 Heping West Road, Shijiazhuang, 050051, Hebei, P. R. China
| | - Jinming Cheng
- Department of Neurology, Hebei General Hospital, No.348 Heping West Road, Shijiazhuang, 050051, Hebei, P. R. China
| | - Xiaojuan Li
- Department of Neurology, Hebei General Hospital, No.348 Heping West Road, Shijiazhuang, 050051, Hebei, P. R. China
| | - Xiaojuan Huangfu
- Department of Neurology, Hebei General Hospital, No.348 Heping West Road, Shijiazhuang, 050051, Hebei, P. R. China
| | - Sujuan Sun
- Department of Neurology, Hebei General Hospital, No.348 Heping West Road, Shijiazhuang, 050051, Hebei, P. R. China
| | - Hebo Wang
- Department of Neurology, Hebei General Hospital, No.348 Heping West Road, Shijiazhuang, 050051, Hebei, P. R. China
| | - Litao Li
- Department of Neurology, Hebei General Hospital, No.348 Heping West Road, Shijiazhuang, 050051, Hebei, P. R. China.
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Wang Y, Zhang S, Ni H, Zhang Y, Yan X, Gao Y, He B, Wang W, Liu C, Guo M. Autophagy is involved in the neuroprotective effect of nicotiflorin. JOURNAL OF ETHNOPHARMACOLOGY 2021; 278:114279. [PMID: 34087402 DOI: 10.1016/j.jep.2021.114279] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 05/21/2021] [Accepted: 05/30/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Nicotiflorin is a flavonoid glycoside derived from the traditional Chinese medicine FlosCarthami, dried petals of Carthamus tinctorius L., and has been confirmed to be a promising novel drug candidate for ischemic stroke. Yet, the exact role of nicotiflorin in cerebral I/R injury is uncharacterized and the possible mechanisms have not been clearly expounded. AIM OF THE STUDY The present study was designed to determine the effect of nicotiflorin on cerebral ischemia/reperfusion (I/R) injury and its relationship with autophagy. MATERIALS AND METHODS Middle cerebral artery occlusion (MCAO) in rats and oxygen-glucose deprivation and reintroduction (OGD/R) in SH-SY5Y cells were established in in vivo and in vitro models, respectively. The severity of MCAO was assessed by brain infarct size, neurological scores and survival rate. The severity of OGD/R was evaluated by cell viability, lactate dehydrogenase (LDH) release and cell apoptosis. The level of autophagy was evaluated both in vivo and in vitro. Autophagosomes were observed using transmission electron microscopy and autophagic flux was measured using mRFP-GFP-tandem fluorescent LC3 adenovirus. Autophagy-related proteins (LC3-II/I, SQSTM1, beclin-1, Phospho-mTOR/mTOR) were measured by immunoblot. Autophagy-related mRNA levels (Becn1, Atg7) were detected by Real-Time PCR. Inhibition of autophagy was implemented by 3-Methyladenine (3-MA) or chloroquine in vitro. RESULTS In vivo, nicotiflorin treatment alleviated brain damage and neurological deficit while it dramatically increased 72 h survival rate in rats. In vitro, nicotiflorin treatment also ameliorated the severity of OGD/R. Moreover, nicotiflorin treatment increased ischemic penumbra autophagy (autophagosomes, BECN1, LC3-II/I ratio, SQSTM1, Phospho-mTOR/mTOR, Atg7). In vitro, nicotiflorin likewise enhanced autophagy and promoted autophagy flux. Furthermore, the blockade of autophagy by 3-MA or chloroquine disabled the efficacic of nicotiflorin in preventing cell damage upon OGD/R insult. CONCLUSION These findings suggest that autophagy plays a significant role in the protective effect of nicotiflorin against ischemic stroke.
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Affiliation(s)
- Yeqing Wang
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University, Shanghai, 200433, China
| | - Shanshan Zhang
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University, Shanghai, 200433, China
| | - Hailai Ni
- Department of Health Care, Changhai Hospital,Naval Medical University, Shanghai, 200433, China
| | - Yanjie Zhang
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University, Shanghai, 200433, China
| | - Xiaodong Yan
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University, Shanghai, 200433, China
| | - Yue Gao
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University, Shanghai, 200433, China
| | - Beixuan He
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University, Shanghai, 200433, China
| | - Wenzheng Wang
- Shanghai Mental Health Center, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Chong Liu
- Department of Pharmacology, College of Pharmacy, Naval Medical University, Shanghai, 200433, China.
| | - Meili Guo
- Department of Pharmacognosy, College of Pharmacy, Naval Medical University, Shanghai, 200433, China.
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19
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Rizzo SA, Bartley O, Rosser AE, Newland B. Oxygen-glucose deprivation in neurons: implications for cell transplantation therapies. Prog Neurobiol 2021; 205:102126. [PMID: 34339808 DOI: 10.1016/j.pneurobio.2021.102126] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 07/16/2021] [Accepted: 07/29/2021] [Indexed: 12/25/2022]
Abstract
Cell replacement therapies hold the potential to restore neuronal networks compromised by neurodegenerative diseases (such as Parkinson's disease or Huntington's disease), or focal tissue damage (via a stroke or spinal cord injury). Despite some promising results achieved to date, transplanted cells typically exhibit poor survival in the central nervous system, thus limiting therapeutic efficacy of the graft. Although cell death post-transplantation is likely to be multifactorial in causality, growing evidence suggests that the lack of vascularisation at the graft site, and the resulting ischemic host environment, may play a fundamental role in the fate of grafted cells. Herein, we summarise data showing how the deprivation of either oxygen, glucose, or both in combination, impacts the survival of neurons and review strategies which may improve graft survival in the central nervous system.
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Affiliation(s)
| | - Oliver Bartley
- Brain Repair Group, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, Wales, UK
| | - Anne E Rosser
- Brain Repair Group, School of Biosciences, Cardiff University, Cardiff, CF10 3AX, Wales, UK; Neuroscience and Mental Health Institute and B.R.A.I.N Unit, Cardiff University, School of Medicine, Hadyn Ellis Building, Maindy Road, CF24 4HQ, Cardiff, UK
| | - Ben Newland
- School of Pharmacy and Pharmaceutical Sciences, Cardiff University, CF10 3NB, Wales, UK; Leibniz Institute for Polymer Research Dresden (IPF), Hohe Straße 6, 01069, Dresden, Germany.
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20
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Wiklund L, Sharma A, Patnaik R, Muresanu DF, Sahib S, Tian ZR, Castellani RJ, Nozari A, Lafuente JV, Sharma HS. Upregulation of hemeoxygenase enzymes HO-1 and HO-2 following ischemia-reperfusion injury in connection with experimental cardiac arrest and cardiopulmonary resuscitation: Neuroprotective effects of methylene blue. PROGRESS IN BRAIN RESEARCH 2021; 265:317-375. [PMID: 34560924 DOI: 10.1016/bs.pbr.2021.06.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Oxidative stress plays an important role in neuronal injuries after cardiac arrest. Increased production of carbon monoxide (CO) by the enzyme hemeoxygenase (HO) in the brain is induced by the oxidative stress. HO is present in the CNS in two isoforms, namely the inducible HO-1 and the constitutive HO-2. Elevated levels of serum HO-1 occurs in cardiac arrest patients and upregulation of HO-1 in cardiac arrest is seen in the neurons. However, the role of HO-2 in cardiac arrest is not well known. In this review involvement of HO-1 and HO-2 enzymes in the porcine brain following cardiac arrest and resuscitation is discussed based on our own observations. In addition, neuroprotective role of methylene blue- an antioxidant dye on alterations in HO under in cardiac arrest is also presented. The biochemical findings of HO-1 and HO-2 enzymes using ELISA were further confirmed by immunocytochemical approach to localize selective regional alterations in cardiac arrest. Our observations are the first to show that cardiac arrest followed by successful cardiopulmonary resuscitation results in significant alteration in cerebral concentrations of HO-1 and HO-2 levels indicating a prominent role of CO in brain pathology and methylene blue during CPR followed by induced hypothermia leading to superior neuroprotection after return of spontaneous circulation (ROSC), not reported earlier.
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Affiliation(s)
- Lars Wiklund
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden
| | - Aruna Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden.
| | - Ranjana Patnaik
- Department of Biomaterials, School of Biomedical Engineering, Indian Institute of Technology, Banaras Hindu University, Varanasi, India
| | - Dafin F Muresanu
- Department of Clinical Neurosciences, University of Medicine & Pharmacy, Cluj-Napoca, Romania; "RoNeuro" Institute for Neurological Research and Diagnostic, Cluj-Napoca, Romania
| | - Seaab Sahib
- Department of Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR, United States
| | - Z Ryan Tian
- Department of Chemistry & Biochemistry, University of Arkansas, Fayetteville, AR, United States
| | - Rudy J Castellani
- Department of Pathology, University of Maryland, Baltimore, MD, United States
| | - Ala Nozari
- Anesthesiology & Intensive Care, Massachusetts General Hospital, Boston, MA, United States
| | - José Vicente Lafuente
- LaNCE, Department of Neuroscience, University of the Basque Country (UPV/EHU), Leioa, Bizkaia, Spain
| | - Hari Shanker Sharma
- International Experimental Central Nervous System Injury & Repair (IECNSIR), Department of Surgical Sciences, Anesthesiology & Intensive Care Medicine, Uppsala University Hospital, Uppsala University, Uppsala, Sweden.
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21
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Machin A, Susilo I, Purwanto DA. Green tea and its active compound epigallocathechin-3-gallate (EGCG) inhibit neuronal apoptosis in a middle cerebral artery occlusion (MCAO) model. J Basic Clin Physiol Pharmacol 2021; 32:319-325. [PMID: 34214383 DOI: 10.1515/jbcpp-2020-0454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 02/20/2021] [Indexed: 12/23/2022]
Abstract
OBJECTIVES To determine the effect of green tea with the active ingredient epigallocathechin-3-gallate (EGCG) on the inhibition of apoptosis in the middle cerebral artery occlusion (MCAO) model. METHODS Four month old male Rattus norvegicus rats with a body weight of 200-275 g was used for the MCAO model and divided into five groups, and the treatment was carried out for 7 days. Before being sacrificed, the subject had 1 cc of blood drawn for high mobility group box 1 (HMGB-1) examination using enzyme-linked immunosorbent assay (ELISA), and after being sacrificed, the brain tissue specimen was taken to examine caspase-3 and B-cell lymphoma 3 (BCL-3) using immunohistochemistry methods. RESULTS There was no significant difference in HMGB-1 results for the treatment group compared to the control group (P1: 384.20 ± 231.72 [p = 0.553]; P2: 379.11 ± 268.4 [p = 0.526]; P3: 284, 87 ± 276.19 [p = 0.140]; P4: 435.32 ± 279.95 [p = 0.912]). There is a significant increase in BCL-2 expression between the treatment group compared to the control group (P1: 2.58 ± 0.51 [p = 0.04]; P2: 3.36 ± 0.50 [p<0.001]; P3: 4.00 ± 0.42 [p<0.001]; P4: 3.60 ± 0.52 [p<0.001]). There was a significant difference in caspase-3 expression compared to the control group in the P3 group (P1: 4.33 ± 0.49 [p = 0.652]; P2: 4.09 ± 0.30 [p = 0.136]; P3: 3.58 ± 0.51 [p = 0.01]; P4: 3.89 ± 0.42 [p = 0.063]). There is no correlation between HMGB-1 and caspase-3 (r = -0.063; p = 0.613) or BCL-2 (r = -0.106; p = 0.396). There is significant negative correlation between caspase-3 and BCL-2 (r = -0.459; p = 0.000). CONCLUSIONS Green tea with the active ingredient EGCG can inhibit neuronal cell death through the apoptotic pathway and not through the activation of HMGB-1.
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Affiliation(s)
- Abdulloh Machin
- Department Neurology, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Imam Susilo
- Department Clinical Pathology, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - Djoko A Purwanto
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Universitas Airlangga, Surabaya, Indonesia
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22
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Saleem S. Apoptosis, Autophagy, Necrosis and Their Multi Galore Crosstalk in Neurodegeneration. Neuroscience 2021; 469:162-174. [PMID: 34166763 DOI: 10.1016/j.neuroscience.2021.06.023] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 06/11/2021] [Accepted: 06/14/2021] [Indexed: 02/06/2023]
Abstract
The progression of neurodegenerative disorders is mainly characterized by immense neuron loss and death of glial cells. The mechanisms which are active and regulate neuronal cell death are namely necrosis, necroptosis, autophagy and apoptosis. These death paradigms are governed by a set of molecular determinants that are pivotal in their performance and also exhibit remarkable overlapping functional pathways. A large number of such molecules have been demonstrated to be involved in the switching of death paradigms in various neurodegenerative diseases. In this review, we discuss various molecules and the concurrent crosstalk mediated by them. According to our present knowledge and research in neurodegeneration, molecules like Atg1, Beclin1, LC3, p53, TRB3, RIPK1 play switching roles toggling from one death mechanism to another. In addition, the review also focuses on the exorbitant number of newer molecules with the potential to cross communicate between death pathways and create a complex cell death scenario. This review highlights recent studies on the inter-dependent regulation of cell death paradigms in neurodegeneration, mediated by cross-communication between pathways. This will help in identifying potential targets for therapeutic intervention in neurodegenerative diseases.
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Affiliation(s)
- Suraiya Saleem
- Stem Cell and Molecular Biology Laboratory Bhupat & Jyoti Mehta School of Biosciences, Department of Biotechnology, Indian Institute of Technology, Madras, Chennai 600 036, Tamil Nadu, India.
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23
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Li K, van Delft MF, Dewson G. Too much death can kill you: inhibiting intrinsic apoptosis to treat disease. EMBO J 2021; 40:e107341. [PMID: 34037273 DOI: 10.15252/embj.2020107341] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 03/11/2021] [Accepted: 03/18/2021] [Indexed: 02/06/2023] Open
Abstract
Apoptotic cell death is implicated in both physiological and pathological processes. Since many types of cancerous cells intrinsically evade apoptotic elimination, induction of apoptosis has become an attractive and often necessary cancer therapeutic approach. Conversely, some cells are extremely sensitive to apoptotic stimuli leading to neurodegenerative disease and immune pathologies. However, due to several challenges, pharmacological inhibition of apoptosis is still only a recently emerging strategy to combat pathological cell loss. Here, we describe several key steps in the intrinsic (mitochondrial) apoptosis pathway that represent potential targets for inhibitors in disease contexts. We also discuss the mechanisms of action, advantages and limitations of small-molecule and peptide-based inhibitors that have been developed to date. These inhibitors serve as important research tools to dissect apoptotic signalling and may foster new treatments to reduce unwanted cell loss.
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Affiliation(s)
- Kaiming Li
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia.,Department of Medical Biology, University of Melbourne, Royal Parade, Melbourne, VIC, Australia
| | - Mark F van Delft
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia.,Department of Medical Biology, University of Melbourne, Royal Parade, Melbourne, VIC, Australia
| | - Grant Dewson
- The Walter and Eliza Hall Institute of Medical Research, Melbourne, VIC, Australia.,Department of Medical Biology, University of Melbourne, Royal Parade, Melbourne, VIC, Australia
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24
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Zhang J, Rui Y, Gao M, Wang L, Yan BC. Expression of Long Non-coding RNA RGD1566344 in the Brain Cortex of Male Mice After Focal Cerebral Ischemia-Reperfusion and the Neuroprotective Effect of a Non-coding RNA RGD1566344 Inhibitor. Cell Mol Neurobiol 2021; 41:705-716. [PMID: 32424772 DOI: 10.1007/s10571-020-00877-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 05/12/2020] [Indexed: 12/18/2022]
Abstract
Ischemic stroke (IS) remains a major cause of disability and death. The changes in long non-coding RNA (lncRNA) RGD1566344 expression in the mouse cerebral cortex, including the infarct and penumbra regions after IS, are not clear. Less is known about the impact and underlying mechanisms of RGD1566344 in IS. In this study, we found that RGD1566344 levels were elevated in the ischemic infarct and penumbra regions 12 h after middle cerebral artery occlusion/reperfusion (MCAO/R) in male mice and in PC12 cells with oxygen glucose deprivation/reperfusion (OGD/R). The inhibition of RGD1566344 by small interference RNA (siRNA) significantly alleviated apoptosis in OGD/R PC12 cells. In cell transfection, quantitative real-time PCR, and Western blot experiments, we demonstrated the possible interaction of non-POU domain-containing octamer-binding protein (NONO) with RGD1566344. The NONO level in OGD/R PC12 cells was obviously increased after inhibiting the RGD1566344 treatment; subsequently the protein kinase B (AKT)/mammalian target of rapamycin (mTOR) signaling pathway was activated. This demonstrated the effect of the RGD1566344-NONO-AKT axis on neural protection after IS. These results revealed a new molecular mechanism of lncRNA RGD1566344 inhibitors through targeting NONO/AKT/mTOR signaling to protect against ischemic neuronal injury, providing strong evidence for the development of promising therapeutic strategies against IS.
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Affiliation(s)
- Jie Zhang
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, People's Republic of China
- Department of Neurology, Affiliated Hospital, Yangzhou University, Yangzhou, 225001, People's Republic of China
| | - Yanggang Rui
- Department of Neurology, Xuyi People's Hospital, Huai'an, 211700, People's Republic of China
| | - Manman Gao
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, People's Republic of China
| | - Li Wang
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, People's Republic of China
| | - Bing Chun Yan
- Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases, The Key Laboratory of Syndrome Differentiation and Treatment of Gastric Cancer of the State Administration of Traditional Chinese Medicine, Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, 225001, People's Republic of China.
- Department of Neurology, Affiliated Hospital, Yangzhou University, Yangzhou, 225001, People's Republic of China.
- Jiangsu Key Laboratory of Zoonosis, Jiangsu Co-Innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, College of Veterinary Medicine, Yangzhou University, Yangzhou, 225009, People's Republic of China.
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25
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Wesley UV, Sutton IC, Cunningham K, Jaeger JW, Phan AQ, Hatcher JF, Dempsey RJ. Galectin-3 protects against ischemic stroke by promoting neuro-angiogenesis via apoptosis inhibition and Akt/Caspase regulation. J Cereb Blood Flow Metab 2021; 41:857-873. [PMID: 33736511 PMCID: PMC7983501 DOI: 10.1177/0271678x20931137] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Post-stroke neurological deficits and mortality are often associated with vascular disruption and neuronal apoptosis. Galectin-3 (Gal3) is a potent pro-survival and angiogenic factor. However, little is known about its protective role in the cerebral ischemia/reperfusion (I/R) injury. We have previously shown significant up-regulation of Gal3 in the post-stroke rat brain, and that blocking of Gal3 with neutralizing antibody decreases the cerebral blood vessel density. Our current study demonstrates that intracerebral local delivery of the Gal3 into rat brain at the time of reperfusion exerts neuroprotection. Ischemic lesion volume and neuronal cell death were significantly reduced as compared with the vehicle-treated MCAO rat brains. Gal3 increased vessel density and neuronal survival after I/R in rat brains. Importantly, Gal3-treated groups showed significant improvement in motor and sensory functional recovery. Gal3 increased neuronal cell viability under in vitro oxygen-glucose deprivation conditions in association with increased phosphorylated-Akt, decreased phosphorylated-ERK1/2, and reduced caspase-3 activity. Gene expression analysis showed down regulation of pro-apoptotic and inflammatory genes including Fas-ligand, and upregulation of pro-survival and pro-angiogenic genes including Bcl-2, PECAM, and occludin. These results indicate a key role for Gal3 in neuro-vascular protection and functional recovery following ischemic stroke through modulation of angiogenic and apoptotic pathways.
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Affiliation(s)
- Umadevi V Wesley
- Department of Neurosurgery, University of Wisconsin, Madison, WI, USA
| | - Ian C Sutton
- Department of Neurosurgery, University of Wisconsin, Madison, WI, USA
| | | | - Jacob W Jaeger
- Department of Neurosurgery, University of Wisconsin, Madison, WI, USA
| | - Allan Q Phan
- Department of Neurosurgery, University of Wisconsin, Madison, WI, USA
| | - James F Hatcher
- Department of Neurosurgery, University of Wisconsin, Madison, WI, USA
| | - Robert J Dempsey
- Department of Neurosurgery, University of Wisconsin, Madison, WI, USA
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26
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D'Souza A, Dave KM, Stetler RA, S. Manickam D. Targeting the blood-brain barrier for the delivery of stroke therapies. Adv Drug Deliv Rev 2021; 171:332-351. [PMID: 33497734 DOI: 10.1016/j.addr.2021.01.015] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 02/06/2023]
Abstract
A variety of neuroprotectants have shown promise in treating ischemic stroke, yet their delivery to the brain remains a challenge. The endothelial cells lining the blood-brain barrier (BBB) are emerging as a dynamic factor in the response to neurological injury and disease, and the endothelial-neuronal matrix coupling is fundamentally neuroprotective. In this review, we discuss approaches that target the endothelium for drug delivery both across the BBB and to the BBB as a viable strategy to facilitate neuroprotective effects, using the example of brain-derived neurotrophic factor (BDNF). We highlight the advances in cell-derived extracellular vesicles (EVs) used for CNS targeting and drug delivery. We also discuss the potential of engineered EVs as a potent strategy to deliver BDNF or other drug candidates to the ischemic brain, particularly when coupled with internal components like mitochondria that may increase cellular energetics in injured endothelial cells.
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27
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An activity-dependent determinant of synapse elimination in the mammalian brain. Neuron 2021; 109:1333-1349.e6. [PMID: 33770504 DOI: 10.1016/j.neuron.2021.03.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/26/2021] [Accepted: 03/04/2021] [Indexed: 01/06/2023]
Abstract
To establish functional neural circuits in the brain, synaptic connections are refined by neural activity during development, where active connections are maintained and inactive ones are eliminated. However, the molecular signals that regulate synapse refinement remain to be elucidated. When we inactivate a subset of neurons in the mouse cingulate cortex, their callosal connections are eliminated through activity-dependent competition. Using this system, we identify JAK2 tyrosine kinase as a key regulator of inactive synapse elimination. We show that JAK2 is necessary and sufficient for elimination of inactive connections; JAK2 is activated at inactive synapses in response to signals from other active synapses; STAT1, a substrate of JAK2, mediates inactive synapse elimination; JAK2 signaling is critical for physiological refinement of synapses during normal development; and JAK2 regulates synapse refinement in multiple brain regions. We propose that JAK2 is an activity-dependent switch that serves as a determinant of inactive synapse elimination.
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28
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Xu X, Sun M, Luo X, Zhang Z, Su L, Cui L, Zhu Z, Lu X, Wang R, Han F, Qian X, Yang Y. One-electron reduction triggered nitric oxide release for ischemia-reperfusion protection. Free Radic Biol Med 2021; 164:13-19. [PMID: 33418107 DOI: 10.1016/j.freeradbiomed.2020.12.443] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/23/2020] [Accepted: 12/29/2020] [Indexed: 12/25/2022]
Abstract
Nitric oxide donors (NODs) are indispensable in biological research and disease treatment. NODs had been utilized to treat cardiovascular diseases in clinic and many others are under trial. Thiols are typically required for these donors to release NO. Yet, their mechanism is complex and often lead to resistance. Herein, we reported that N-nitrosated electron-deficient dyes are capable of NO release with one-electron reduction. A fluorophore is generated simultaneously, whose fluorescence is harnessed to monitor the profile of NO release. Through electrochemical and spectral studies, NOD f3 was found to exhibit good biocompatibility and high reduction efficiency and its potentials in cell-protection in oxygen and glucose deprivation (OGD) models were showcased with endothelial cells. This work aims at offering a new approach to design reduction-triggered NOD, which have therapeutic potentials in ischemia-reperfusion.
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Affiliation(s)
- Xiu Xu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Meiling Sun
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Xiao Luo
- School of Chemistry and Molecular Engineering, East China Normal University, Dongchuan Road 500, Shanghai, 200241, China
| | - Ziqian Zhang
- Guangxi Scientific Research Center of Traditional Chinese Medicine, Guangxi University of Chinese Medicine, Nanning, 530200, China
| | - Lin Su
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Lingfei Cui
- School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China
| | - Zhihui Zhu
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Xicun Lu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Rui Wang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Feng Han
- Key Laboratory of Cardiovascular & Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China.
| | - Xuhong Qian
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Youjun Yang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
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29
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Enogieru AB, Haylett W, Hiss DC, Ekpo OE. Regulation of AKT/AMPK signaling, autophagy and mitigation of apoptosis in Rutin-pretreated SH-SY5Y cells exposed to MPP . Metab Brain Dis 2021; 36:315-326. [PMID: 33146846 DOI: 10.1007/s11011-020-00641-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 10/30/2020] [Indexed: 11/25/2022]
Abstract
Accumulating evidence suggest that apoptosis, autophagy and dysregulation of signaling pathways are common mechanisms involved in Parkinson's disease (PD) pathogenesis, and thus development of therapeutic agents targeting these mechanisms may be useful for the treatment of this disease. Although rutin (a bioflavonoid) is reported to have pharmacological benefits such as antioxidant, anti-inflammatory and antitumor activities, there are very few reports on the activity of this compound in 1-methyl-4-phenylpyridinium (MPP+)-induced PD models. Accordingly, we investigated the effects of rutin on apoptosis, autophagy and cell signaling markers (AKT/AMPK) in SH-SY5Y cells exposed to MPP+. Results show reduced changes in nuclear morphology and mitigation of caspase 3/7 and 9 activities in rutin pre-treated cells exposed to MPP+. Likewise, rutin regulated cell signaling pathways (AKT/AMPK) and significantly decreased protein expression levels of cleaved PARP, cytochrome c, LC3-II and p62. Also, rutin significantly increased protein expression levels of full-length caspase 3 in SH-SY5Y cells treated with MPP+. Transmission electron microscope (TEM) images demonstrated a reduction in autophagosomes in rutin-pretreated SH-SY5Y cells exposed to MPP+. These results provide experimental support for rutin's neuroprotective activity against MPP+-induced toxicity in SH-SY5Y cells, which is as a promising therapeutic agent for clinical trials in humans.
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Affiliation(s)
- Adaze Bijou Enogieru
- Department of Medical Biosciences, University of the Western Cape, Robert Sobukwe Road, Private Bag X17, Bellville, 7535, South Africa
- Department of Anatomy, School of Basic Medical Sciences, University of Benin, Benin City, Edo State, Nigeria
| | - William Haylett
- Division of Molecular Biology and Human Genetics, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
| | - Donavon Charles Hiss
- Department of Medical Biosciences, University of the Western Cape, Robert Sobukwe Road, Private Bag X17, Bellville, 7535, South Africa
| | - Okobi Eko Ekpo
- Department of Medical Biosciences, University of the Western Cape, Robert Sobukwe Road, Private Bag X17, Bellville, 7535, South Africa.
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30
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Matei N, Camara J, Zhang JH. The Next Step in the Treatment of Stroke. Front Neurol 2021; 11:582605. [PMID: 33551950 PMCID: PMC7862333 DOI: 10.3389/fneur.2020.582605] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 12/23/2020] [Indexed: 12/12/2022] Open
Abstract
Although many patients do not receive reperfusion therapy because of delayed presentation and/or severity and location of infarct, new reperfusion approaches are expanding the window of intervention. Novel application of neuroprotective agents in combination with the latest methods of reperfusion provide a path to improved stroke intervention outcomes. We examine why neuroprotective agents have failed to translate to the clinic and provide suggestions for new approaches. New developments in recanalization therapy in combination with therapeutics evaluated in parallel animal models of disease will allow for novel, intra-arterial deployment of therapeutic agents over a vastly expanded therapeutic time window and with greater likelihood success. Although the field of neuronal, endothelial, and glial protective therapies has seen numerous large trials, the application of therapies in the context of newly developed reperfusion strategies is still in its infancy. Given modern imaging developments, evaluation of the penumbra will likely play a larger role in the evolving management of stroke. Increasingly more patients will be screened with neuroimaging to identify patients with adequate collateral blood supply allowing for delayed rescue of the penumbra. These patients will be ideal candidates for therapies such as reperfusion dependent therapeutic agents that pair optimally with cutting-edge reperfusion techniques.
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Affiliation(s)
- Nathanael Matei
- Department of Ophthalmology, University of Southern California, Los Angeles, CA, United States
| | - Justin Camara
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, United States
| | - John H Zhang
- Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, United States.,Department of Anesthesiology, Loma Linda University, Loma Linda, CA, United States.,Department of Neurosurgery, Loma Linda University, Loma Linda, CA, United States
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β-1, 3-galactosyltransferase 2 deficiency exacerbates brain injury after transient focal cerebral ischemia in mice. Brain Res Bull 2021; 169:104-111. [PMID: 33482286 DOI: 10.1016/j.brainresbull.2021.01.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 01/08/2021] [Accepted: 01/12/2021] [Indexed: 11/22/2022]
Abstract
Glycosyltransferases are enzymes that catalyze the formation of a variety of glycoconjugates. Glycoconjugates play vital roles in the nervous system. β-1, 3-Galactosyltransferase 2 (B3galt2) is one of the major types of glycosyltransferases, which has not been reported in ischemia induced-brain injury. The purpose of this study was to explore the role of B3galt2 exerts and its underlying mechanism in cerebral ischemia in mice. Wild-type (WT) and heterozygous B3galt2 knockout (B3galt2-/+) mice were subjected to 90 min transient focal cerebral ischemia by middle cerebral artery occlusion (MCAO). The brain samples were analyzed at 24 h after reperfusion. The B3galt2 level in the peri-infarct penumbra was quantified. The cerebral infarct volume, neurological deficits, apoptosis and the levels of Reelin and Dab1 were assessed. Compared with control mice, B3galt2-/+ mice not only showed severe brain damage, neurologic functional deficits, but also showed severe neuronal apoptosis in the cortical penumbra after ischemia/reperfusion (I/R). The Caspase-3 activity was increased and the levels of Reelin and Dab1 were decreased in B3galt2-/+ mice. Recombinant human Reelin (rh-Reelin) administered intracerebroventricularly before MCAO significantly reduced infarct volume, and prevented neuronal loss in B3galt2-/+ mice after I/R. Our results suggest B3galt2 deficiency exacerbates ischemic brain damage in acute ischemic stroke in mice, and this was reversed by giving rh-Reelin. B3galt2 might play a beneficial role for neurons survival in the penumbra through modulation of Reelin pathway.
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Mashimo M, Onishi M, Uno A, Tanimichi A, Nobeyama A, Mori M, Yamada S, Negi S, Bu X, Kato J, Moss J, Sanada N, Kizu R, Fujii T. The 89-kDa PARP1 cleavage fragment serves as a cytoplasmic PAR carrier to induce AIF-mediated apoptosis. J Biol Chem 2021; 296:100046. [PMID: 33168626 PMCID: PMC7948984 DOI: 10.1074/jbc.ra120.014479] [Citation(s) in RCA: 87] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 11/02/2020] [Accepted: 11/09/2020] [Indexed: 01/17/2023] Open
Abstract
Poly(ADP-ribose) polymerase 1 (PARP1) is a nuclear protein that is activated by binding to DNA lesions and catalyzes poly(ADP-ribosyl)ation of nuclear acceptor proteins, including PARP1 itself, to recruit DNA repair machinery to DNA lesions. When excessive DNA damage occurs, poly(ADP-ribose) (PAR) produced by PARP1 is translocated to the cytoplasm, changing the activity and localization of cytoplasmic proteins, e.g., apoptosis-inducing factor (AIF), hexokinase, and resulting in cell death. This cascade, termed parthanatos, is a caspase-independent programmed cell death distinct from necrosis and apoptosis. In contrast, PARP1 is a substrate of activated caspases 3 and 7 in caspase-dependent apoptosis. Once cleaved, PARP1 loses its activity, thereby suppressing DNA repair. Caspase cleavage of PARP1 occurs within a nuclear localization signal near the DNA-binding domain, resulting in the formation of 24-kDa and 89-kDa fragments. In the present study, we found that caspase activation by staurosporine- and actinomycin D-induced PARP1 autopoly(ADP-ribosyl)ation and fragmentation, generating poly(ADP-ribosyl)ated 89-kDa and 24-kDa PARP1 fragments. The 89-kDa PARP1 fragments with covalently attached PAR polymers were translocated to the cytoplasm, whereas 24-kDa fragments remained associated with DNA lesions. In the cytoplasm, AIF binding to PAR attached to the 89-kDa PARP1 fragment facilitated its translocation to the nucleus. Thus, the 89-kDa PARP1 fragment is a PAR carrier to the cytoplasm, inducing AIF release from mitochondria. Elucidation of the caspase-mediated interaction between apoptosis and parthanatos pathways extend the current knowledge on mechanisms underlying programmed cell death and may lead to new therapeutic targets.
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Affiliation(s)
- Masato Mashimo
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kyotanabe, Kyoto, Japan.
| | - Mayu Onishi
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kyotanabe, Kyoto, Japan
| | - Arina Uno
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kyotanabe, Kyoto, Japan
| | - Akari Tanimichi
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kyotanabe, Kyoto, Japan
| | - Akari Nobeyama
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kyotanabe, Kyoto, Japan
| | - Mana Mori
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kyotanabe, Kyoto, Japan
| | - Sayaka Yamada
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kyotanabe, Kyoto, Japan
| | - Shigeru Negi
- Department of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kyotanabe, Kyoto, Japan
| | - Xiangning Bu
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Jiro Kato
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Joel Moss
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Noriko Sanada
- Department of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kyotanabe, Kyoto, Japan
| | - Ryoichi Kizu
- Department of Clinical Pharmacy, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kyotanabe, Kyoto, Japan
| | - Takeshi Fujii
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Doshisha Women's College of Liberal Arts, Kyotanabe, Kyoto, Japan
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Hu C, Wang S, Liu L. Long non-coding RNA small nucleolar RNA host gene 1 alleviates the progression of epilepsy by regulating the miR-181a/BCL-2 axis in vitro. Life Sci 2020; 267:118935. [PMID: 33359246 DOI: 10.1016/j.lfs.2020.118935] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 12/04/2020] [Accepted: 12/15/2020] [Indexed: 02/08/2023]
Abstract
PURPOSE Long non-coding RNAs (lncRNAs) have been reported to be involved in regulating epilepsy. The purpose of this study is to investigate the possibly regulatory mechanism of small nucleolar RNA host gene 1 (SNHG1) on epilepsy. METHODS Quantitative real-time PCR was utilized to detect the expression of SNHG1, microRNA (miR)-181a, and B-cell lymphoma-2 (BCL-2). Through an enzyme-linked immunosorbent assay, the levels of tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, IL-6, and cyclooxygenase-2 (COX-2) were determined. The viability and apoptosis of CTX-TNA2 cells were measured using MTT assay and flow cytometry analysis, respectively. Western blot assay was performed to analyze the protein levels of Bcl-2, BCL2-associated X, and Caspase-3. The relationships between miR-181a and SNHG1/BCL-2 were confirmed by the dual-luciferase reporter assay. RESULTS SNHG1 expression was down-regulated in EP tissues and kainic acid (KA)-induced CTX-TNA2 cells. The apoptosis and release of inflammatory factors (TNF-α, IL-1β, IL-6, and COX-2) in KA-induced CTX-TNA2 cells were suppressed by SNHG1 overexpression and promoted by miR-181a up-regulation. In addition, we confirmed that SNHG1 targeted miR-181a, whereas BCL-2 was a target gene of miR-181a. Negative correlations between SNHG1 and miR-181a, as well as miR-181a and BCL-2 were exhibited. Both the up-regulation of miR-181a and down-regulation of BCL-2 reversed the inhibiting effects of SNHG1 on apoptosis and inflammatory response of KA-induced CTX-TNA2 cells, and the promoting effect upon cell viability. CONCLUSIONS SNHG1 alleviated the progression of EP by modulating the miR-181a/BCL-2 axis in vitro, thus SNHG1 could act as a possible therapeutic target for treating EP.
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Affiliation(s)
- Chongling Hu
- Department of Neurology, West China Hospital, Sichuan University, No. 37, Guo Xue Xiang, Chengdu City, Sichuan Province 610041, China; Department of Neural Tumor, Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, No. 181, Hanyu Road, Chongqing City 400030, China
| | - Shiqiang Wang
- Department of Neurology, West China Hospital, Sichuan University, No. 37, Guo Xue Xiang, Chengdu City, Sichuan Province 610041, China
| | - Ling Liu
- Department of Neural Tumor, Chongqing Key Laboratory of Translational Research for Cancer Metastasis and Individualized Treatment, Chongqing University Cancer Hospital, No. 181, Hanyu Road, Chongqing City 400030, China.
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Li YQ, Hui ZR, Tao T, Shao KY, Liu Z, Li M, Gu LL. Protective effect of hypoxia inducible factor-1α gene therapy using recombinant adenovirus in cerebral ischaemia-reperfusion injuries in rats. PHARMACEUTICAL BIOLOGY 2020; 58:438-446. [PMID: 32432963 PMCID: PMC7301712 DOI: 10.1080/13880209.2020.1762667] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 03/24/2020] [Accepted: 04/26/2020] [Indexed: 06/01/2023]
Abstract
Context: Hypoxia-inducible factor-1α (HIF-1α)-induced genes can improve blood circulation.Objective: To investigate brain protective effect of recombinant adenovirus-mediated HIF-1α (AdHIF-1α) expression and its mechanism.Materials and methods: Male SD rats were used to establish focal cerebral ischaemia-reperfusion (CIR) injury models and randomly divided into normal, sham, CIR, Ad and AdHIF-1α groups. Ad or AdHIF-1α (108 pfu/10 µL) were administered into lateral ventricle of rats in Ad and AdHIF-1α groups. Modified neurological severity score (mNSS), brain water content (BWC) and cerebral infarct volumes (CIVs) were analyzed, and HE staining was performed using the brain tissues. Furthermore, the expression of caspase-3 and HSP90 was analyzed using qRT-PCR and Western blotting.Results: Compared to CIR (mNSS, 8.52 ± 0.52; CIV, 0.22 ± 0.01) and Ad groups (mNSS, 8.83 ± 0.41; CIV, 0.22 ± 0.02), mNSS and CIV were significantly decreased in AdHIF-1α group (mNSS, 6.03 ± 0.61; CIV, 0.11 ± 0.01) at 72 h (p < 0.05). With prolonged reperfusion time (6 h to 72 h), BWC of all rats increased gradually, although the increase was markedly less in AdHIF-1α group (78.15 ± 0.16 to 87.01 ± 0.31) compared to that in CIR (78.77 ± 0.60 to 89.74 ± 0.34) and Ad groups (78.77 ± 0.35 to 89.71 ± 0.27) (p < 0.01). There were significantly greater pathological changes in the neurons in AdHIF-1α group at 72 h following CIR. Furthermore, expression of caspase-3 (p < 0.01) down-regulated and HSP90 up-regulated (p < 0.05) at mRNA and protein levels in AdHIF-1α group.Discussion and conclusions: HIF‑1α gene therapy is neuroprotective towards the CIR rat model. HIF-1α may be a candidate gene for the treatment of ischaemic brain injury.
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Affiliation(s)
- Ya-Qi Li
- Department of Emergency, Guizhou Provincial People’s Hospital, Guiyang, Guizhou Province, China
| | - Zhi-Rong Hui
- Department of Rehabilitation Medicine, Guizhou Provincial People’s Hospital, Guiyang, Guizhou Province, China
| | - Tao Tao
- Department of Rehabilitation Medicine, Guizhou Provincial People’s Hospital, Guiyang, Guizhou Province, China
| | - Kang-Yu Shao
- Department of Neurology, Chengdu Aerospace Hospital, Chengdu, Sichuan Province, China
| | - Zhi Liu
- Department of Pharmacy, Affiliated Hospital, Guizhou Medical University, Guiyang, Guizhou Province, China
| | - Min Li
- Department of Rehabilitation Medicine, Guizhou Provincial People’s Hospital, Guiyang, Guizhou Province, China
| | - Li-Ling Gu
- Department of Rehabilitation Medicine, Guizhou Provincial People’s Hospital, Guiyang, Guizhou Province, China
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Characterization of a novel model of global forebrain ischaemia-reperfusion injury in mice and comparison with focal ischaemic and haemorrhagic stroke. Sci Rep 2020; 10:18170. [PMID: 33097782 PMCID: PMC7585423 DOI: 10.1038/s41598-020-75034-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 08/27/2020] [Indexed: 12/31/2022] Open
Abstract
Stroke is caused by obstructed blood flow (ischaemia) or unrestricted bleeding in the brain (haemorrhage). Global brain ischaemia occurs after restricted cerebral blood flow e.g. during cardiac arrest. Following ischaemic injury, restoration of blood flow causes ischaemia-reperfusion (I/R) injury which worsens outcome. Secondary injury mechanisms after any stroke are similar, and encompass inflammation, endothelial dysfunction, blood-brain barrier (BBB) damage and apoptosis. We developed a new model of transient global forebrain I/R injury (dual carotid artery ligation; DCAL) and compared the manifestations of this injury with those in a conventional I/R injury model (middle-cerebral artery occlusion; MCAo) and with intracerebral haemorrhage (ICH; collagenase model). MRI revealed that DCAL produced smaller bilateral lesions predominantly localised to the striatum, whereas MCAo produced larger focal corticostriatal lesions. After global forebrain ischaemia mice had worse overall neurological scores, although quantitative locomotor assessment showed MCAo and ICH had significantly worsened mobility. BBB breakdown was highest in the DCAL model while apoptotic activity was highest after ICH. VCAM-1 upregulation was specific to ischaemic models only. Differential transcriptional upregulation of pro-inflammatory chemokines and cytokines and TLRs was seen in the three models. Our findings offer a unique insight into the similarities and differences in how biological processes are regulated after different types of stroke. They also establish a platform for analysis of therapies such as endothelial protective and anti-inflammatory agents that can be applied to all types of stroke.
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Dojo Soeandy C, Elia AJ, Cao Y, Rodgers C, Huang S, Elia AC, Henderson JT. Necroptotic-Apoptotic Regulation in an Endothelin-1 Model of Cerebral Ischemia. Cell Mol Neurobiol 2020; 41:1727-1742. [PMID: 32844322 DOI: 10.1007/s10571-020-00942-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 08/11/2020] [Indexed: 12/22/2022]
Abstract
The primary forms of cell death seen in ischemic stroke are of two major types: a necrotic/necroptotic form, and an apoptotic form that is frequently seen in penumbral regions of injury. Typically apoptotic versus necroptotic programmed cell death is described as competitive in nature, where necroptosis is often described as playing a backup role to apoptosis. In the present study, we examined the relationship between these two forms of cell death in a murine endothelin-1 model of ischemia-reperfusion injury in wildtype and caspase-3 null mice with and without addition of the pharmacologic RIPK1 phosphorylation inhibitor necrostatin-1. Analyses of ischemic brain injury were performed via both cellular and volumetric assessments, electron microscopy, TUNEL staining, activated caspase-3 and caspase-7 staining, as well as CD11b and F4/80 staining. Inhibition of caspase-3 or RIPK1 phosphorylation demonstrates significant neural protective effects which are non-additive and exhibit significant overlap in protected regions. Interestingly, morphologic analysis of the cortex demonstrates reduced apoptosis following RIPK1 inhibition. Consistent with this, RIPK1 inhibition reduces the levels of both caspase-3 and caspase-7 activation. Additionally, this protection appears independent of secondary inflammatory mediators. Together, these observations demonstrate that the necroptotic protein RIPK1 modifies caspase-3/-7 activity, ultimately resulting in decreased neuronal apoptosis. These findings thus modify the traditional exclusionary view of apoptotic/necroptotic signaling, revealing a new form of interaction between these dominant forms of cell death.
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Affiliation(s)
- Chesarahmia Dojo Soeandy
- Department of Pharmaceutical Sciences, University of Toronto, 144 College St. Rm 962, Toronto, ON, M5S 3M2, Canada
| | - Andrew J Elia
- Princess Margaret Cancer Center, University Health Network, 610 University Avenue Rm 7-323, Toronto, ON, M5G 2C1, Canada
- Department of Medical Biophysics, University of Toronto, 101 College Street Rm 15-701, Toronto, ON, M5G 1L7, Canada
| | - Yanshan Cao
- Department of Pharmaceutical Sciences, University of Toronto, 144 College St. Rm 1010, Toronto, ON, M5S 3M2, Canada
| | - Christopher Rodgers
- Department of Pharmaceutical Sciences, University of Toronto, 144 College St. Rm 962, Toronto, ON, M5S 3M2, Canada
| | - Shudi Huang
- Department of Pharmaceutical Sciences, University of Toronto, 144 College St. Rm 962, Toronto, ON, M5S 3M2, Canada
| | - Andrea C Elia
- Department of Pharmaceutical Sciences, University of Toronto, 144 College St. Rm 962, Toronto, ON, M5S 3M2, Canada
| | - Jeffrey T Henderson
- Department of Pharmaceutical Sciences, University of Toronto, 144 College St. Rm 962, Toronto, ON, M5S 3M2, Canada.
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Anti-Apoptotic Effects of Carotenoids in Neurodegeneration. Molecules 2020; 25:molecules25153453. [PMID: 32751250 PMCID: PMC7436041 DOI: 10.3390/molecules25153453] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 07/27/2020] [Accepted: 07/27/2020] [Indexed: 02/07/2023] Open
Abstract
Apoptosis, programmed cell death type I, is a critical part of neurodegeneration in cerebral ischemia, Parkinson’s, and Alzheimer’s disease. Apoptosis begins with activation of pro-death proteins Bax and Bak, release of cytochrome c and activation of caspases, loss of membrane integrity of intracellular organelles, and ultimately cell death. Approaches that block apoptotic pathways may prevent or delay neurodegenerative processes. Carotenoids are a group of pigments found in fruits, vegetables, and seaweeds that possess antioxidant properties. Over the last several decades, an increasing number of studies have demonstrated a protective role of carotenoids in neurodegenerative disease. In this review, we describe functions of commonly consumed carotenoids including lycopene, β-carotene, lutein, astaxanthin, and fucoxanthin and their roles in neurodegenerative disease models. We also discuss the underlying cellular mechanisms of carotenoid-mediated neuroprotection, including their antioxidant properties, role as signaling molecules, and as gene regulators that alleviate apoptosis-associated brain cell death.
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LRRC8A-dependent volume-regulated anion channels contribute to ischemia-induced brain injury and glutamatergic input to hippocampal neurons. Exp Neurol 2020; 332:113391. [PMID: 32598930 DOI: 10.1016/j.expneurol.2020.113391] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/05/2020] [Accepted: 06/25/2020] [Indexed: 11/20/2022]
Abstract
Volume-regulated anion channels (VRACs) are critically involved in regulating cell volume, and leucine-rich repeat-containing protein 8A (LRRC8A, SWELL1) is an obligatory subunit of VRACs. Cell swelling occurs early after brain ischemia, but it is unclear whether neuronal LRRC8a contributes to ischemia-induced glutamate release and brain injury. We found that Lrrc8a conditional knockout (Lrrc8a-cKO) mice produced by crossing NestinCre+/- with Lrrc8aflox+/+ mice died 7-8 weeks of age, indicating an essential role of neuronal LRRC8A for survival. Middle cerebral artery occlusion (MCAO) caused an early increase in LRRC8A protein levels in the hippocampus in wild-type (WT) mice. Whole-cell patch-clamp recording in brain slices revealed that oxygen-glucose deprivation significantly increased the amplitude of VRAC currents in hippocampal CA1 neurons in WT but not in Lrrc8a-cKO mice. Hypotonicity increased the frequency of spontaneous excitatory postsynaptic currents (sEPSCs) in hippocampal CA1 neurons in WT mice, and this was abolished by DCPIB, a VRAC blocker. But in Lrrc8a-cKO mice, hypotonic solution had no effect on the frequency of sEPSCs in these neurons. Furthermore, the brain infarct volume and neurological severity score induced by MCAO were significantly lower in Lrrc8a-cKO mice than in WT mice. In addition, MCAO-induced increases in cleaved caspase-3 and calpain activity, two biochemical markers of neuronal apoptosis and death, in brain tissues were significantly attenuated in Lrrc8a-cKO mice compared with WT mice. These new findings indicate that cerebral ischemia increases neuronal LRRC8A-dependent VRAC activity and that VRACs contribute to increased glutamatergic input to hippocampal neurons and brain injury caused by ischemic stroke.
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Yang Y, Gao H, Liu W, Jiang X, Shen Z, Li X, Ren T, Xu Z, Cheng G, Zhao Q. DCMQA, a caffeoylquinic acid derivative alleviates NMDA-induced neurotoxicity via modulating GluN2A and GluN2B-containing NMDA receptors in vitro. Toxicol In Vitro 2020; 67:104888. [PMID: 32416136 DOI: 10.1016/j.tiv.2020.104888] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/07/2020] [Accepted: 05/11/2020] [Indexed: 12/14/2022]
Abstract
Compound DCMQA (4, 5-O-dicaffeoyl-1-O-[4-malic acid methyl ester]-quinic acid) is a natural caffeoylquinic acid derivative isolated from Arctium lappa L. roots. Caffeoylquinic acid derivatives have been reported to possess neuroprotective effects through inhibiting oxidative stress and apoptosis in vitro. However, whether DCMQA exerts protective effects on N-methyl-D-aspartate (NMDA)-induced neurotoxicity and the underlying mechanism has not been elucidated. In this study, the results indicated that pretreatment of DCMQA prevented the loss of cell viability and attenuated the LDH leakage in SH-SY5Y cells exposed to NMDA. Hoechst 33342 staining and Annexin V-PI double staining illustrated that DCMQA suppressed NMDA-induced morphological damage and neuronal apoptosis. Moreover, DCMQA inhibited NMDA-mediated Ca2+ influx, excessive intracellular ROS generation and loss of mitochondrial membrane potential (MMP). Western blot analysis showed that DCMQA attenuated the Bax/Bcl-2 ratio, release of cytochrome c as well as expression of caspase-9 and caspase-3. Besides, DCMQA down-regulated GluN2B-containing NMDA receptors (NMDARs) and up-regulated GluN2A-containing NMDARs, promoted the disruption of nNOS and PSD95 as well as activation of CaMK II-α. Furthermore, computational docking study indicated that DCMQA possessed a good affinity for NMDARs. These results indicated that DCMQA protects SH-SY5Y cells against NMDA-induced neuronal damage. In addition, the underlying mechanisms of DCMQA-mediated neuroprotection are associated with modulating NMDARs and disruption of nNOS-PSD95 as well as the activation of CaMK II-α.
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Affiliation(s)
- Yue Yang
- School of Life Sciences and Biopharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China; Department of Pharmacy, General Hospital of Northern Military Area, 83 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China
| | - Huan Gao
- Department of Pharmacy, General Hospital of Northern Military Area, 83 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China
| | - Wenwu Liu
- School of Life Sciences and Biopharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China; Department of Pharmacy, General Hospital of Northern Military Area, 83 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China
| | - Xiaowen Jiang
- School of Life Sciences and Biopharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China; Department of Pharmacy, General Hospital of Northern Military Area, 83 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China
| | - Zexu Shen
- School of Life Sciences and Biopharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China; Department of Pharmacy, General Hospital of Northern Military Area, 83 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China
| | - Xiang Li
- School of Life Sciences and Biopharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China; Department of Pharmacy, General Hospital of Northern Military Area, 83 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China
| | - Tianshu Ren
- School of Life Sciences and Biopharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China; Department of Pharmacy, General Hospital of Northern Military Area, 83 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China
| | - Zihua Xu
- School of Life Sciences and Biopharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China; Department of Pharmacy, General Hospital of Northern Military Area, 83 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China
| | - Gang Cheng
- School of Life Sciences and Biopharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China
| | - Qingchun Zhao
- School of Life Sciences and Biopharmaceutics, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China; Department of Pharmacy, General Hospital of Northern Military Area, 83 Wenhua Road, Shenyang, Liaoning 110016, People's Republic of China.
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Kim HL, Lee HJ, Lee DR, Choi BK, Yang SH. Anti-osteoarthritic Effects of an Herbal Composition LI73014F2 on Interleukin-1β-induced Primary Human Articular Chondrocytes. Molecules 2020; 25:molecules25092033. [PMID: 32349389 PMCID: PMC7249004 DOI: 10.3390/molecules25092033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 04/16/2020] [Accepted: 04/25/2020] [Indexed: 01/10/2023] Open
Abstract
Osteoarthritis (OA) is one of the most well-characterized joint diseases and is associated with chondrocyte inflammation, metalloproteinase upregulation and apoptosis. LI73014F2 is a novel composition prepared from aqueous extract of Terminalia chebula fruit, alcohol extract of Curcuma longa rhizome, and Boswellia serrata extract at 2:1:2 ratio. Earlier studies have shown that LI73014F2 inhibits cyclooxygenase-2 (COX-2), 5-lipoxygenase (5-LOX) activities, and attenuates clinical symptoms in OA subjects. In the present study, we evaluated the protective anti-inflammatory and anti-apoptotic effects, as well as the underlying mechanisms, of LI73014F2 in interleukin (IL)-1β-induced inflammation in human primary chondrocytes. Human chondrocytes were treated with LI73014F2 (0, 12.5, 25 and 50 μg/mL) in IL-1β (10 ng/mL)-containing chondrocyte growth medium for 24 h. Cell viability was assessed using an MTT assay. The pro-inflammatory mediator, inflammatory cytokines, MMPs, apoptosis-related proteins, mitogen-activated protein kinase (MAPK) and nuclear factor-κB (NF-κB) signaling pathways protein expression levels were detected by western blot analysis. The results demonstrated that LI73014F2 normalized the expressions of COX-2, mPGES-1, PGE2, 5-LOX, LTB4, IL-1β, TNFα, IL-6, MMP-2, MMP-3, MMP-9, MMP-13, Bax/Bcl-2, cleaved caspase-9 and -3, cleaved PARP, phospho-NF-κB p65 and phospho-p38 MAPK proteins in IL-1β-induced primary human chondrocytes. Moreover, the data suggested that LI73014F2 reduced IL-1β-induced inflammation and apoptosis, at least partially via the inhibition of the NF-κB/MAPK signaling pathway. In conclusion, the present findings provide the molecular basis of the anti-OA efficacy of LI73014F2.
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Affiliation(s)
- Hae Lim Kim
- Department of Biotechnology, Chonnam National University, Yeosu 59626, Korea; (H.L.K.); (H.J.L.)
| | - Hae Jin Lee
- Department of Biotechnology, Chonnam National University, Yeosu 59626, Korea; (H.L.K.); (H.J.L.)
| | - Dong-Ryung Lee
- Nutrapharm Tech, Jungwon-gu, Seongnam, Gyunggi 13201, Korea; (D.-R.L.); (B.-K.C.)
| | - Bong-Keun Choi
- Nutrapharm Tech, Jungwon-gu, Seongnam, Gyunggi 13201, Korea; (D.-R.L.); (B.-K.C.)
| | - Seung Hwan Yang
- Department of Biotechnology, Chonnam National University, Yeosu 59626, Korea; (H.L.K.); (H.J.L.)
- Correspondence: ; Tel.: +82-61-659-7306
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Matheson R, Chida K, Lu H, Clendaniel V, Fisher M, Thomas A, Lo EH, Selim M, Shehadah A. Neuroprotective Effects of Selective Inhibition of Histone Deacetylase 3 in Experimental Stroke. Transl Stroke Res 2020; 11:1052-1063. [PMID: 32016769 DOI: 10.1007/s12975-020-00783-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 12/15/2022]
Abstract
Histone deacetylase 3 (HDAC3) has been implicated as neurotoxic in several neurodegenerative conditions. However, the role of HDAC3 in ischemic stroke has not been thoroughly explored. We tested the hypothesis that selective inhibition of HDAC3 after stroke affords neuroprotection. Adult male Wistar rats (n = 8/group) were subjected to 2 h of middle cerebral artery occlusion (MCAO), and randomly selected animals were treated intraperitoneally twice with either vehicle (1% Tween 80) or a selective HDAC3 inhibitor (RGFP966, 10 mg/kg) at 2 and 24 h after MCAO. Long-term behavioral tests were performed up to 28 days after MCAO. Another set of rats (n = 7/group) were sacrificed at 3 days for histological analysis. Immunostaining for HDAC3, acetyl-Histone 3 (AcH3), NeuN, TNF-alpha, toll-like receptor 4 (TLR4), cleaved caspase-3, cleaved poly (ADP-ribose) polymerase (PARP), Akt, and TUNEL were performed. Selective HDAC3 inhibition improved long-term functional outcome (p < 0.05) and reduced infarct volume (p < 0.0001). HDAC3 inhibition increased levels of AcH3 in the ischemic brain (p = 0.016). Higher levels of AcH3 were significantly correlated with better neurological scores and smaller infarct volumes (r = 0.74, p = 0.002; r = 0.6, p = 0.02, respectively). The RGFP966 treatment reduced apoptosis-TUNEL+, cleaved caspase-3+, and cleaved PARP+ cells-and neuroinflammation-TNF-alpha+ and TLR4+ cells-in the ischemic border compared to vehicle control (p < 0.05). The RGFP966 treatment also increased Akt expression in the ipsilateral cortex (p < 0.001). Selective HDAC3 inhibition after stroke improves long-term neurological outcome and decreases infarct volume. The neuroprotective effects of HDAC3 inhibition are associated with a reduction in apoptosis and inflammation and upregulation of the Akt pathway.
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Affiliation(s)
- Rudy Matheson
- Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA
| | - Kohei Chida
- Department of Neurosurgery, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA
| | - Hui Lu
- Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA.,Xuan Wu Hospital/Capital Medical University, Xicheng district, Beijing, 100053, People's Republic of China
| | - Victoria Clendaniel
- Department of Neurology, Beth Israel Deaconess Medical Center, Boston, MA, 02215, USA
| | - Marc Fisher
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Ajith Thomas
- Department of Neurosurgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Eng H Lo
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA, 02129, USA
| | - Magdy Selim
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Amjad Shehadah
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA.
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Physical and cognitive training attenuate hippocampal ischemia-induced memory impairments in rat. Brain Res Bull 2020; 155:202-210. [DOI: 10.1016/j.brainresbull.2019.10.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 10/15/2019] [Accepted: 10/19/2019] [Indexed: 01/22/2023]
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Zheng Z, Liu S, Wang C, Wang C, Tang D, Shi Y, Han X. Association of genetic polymorphisms in CASP7 with risk of ischaemic stroke. Sci Rep 2019; 9:18627. [PMID: 31819117 PMCID: PMC6901581 DOI: 10.1038/s41598-019-55201-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 11/19/2019] [Indexed: 01/05/2023] Open
Abstract
Caspase 7 (CASP7) is located on chromosome 10q25.3 that has been identified to be a susceptibility locus of ischaemic stroke (IS) by genome-wide association study. Elevated CASP7 was observed in IS, acting as a key apoptotic mediator in the development of IS. The aim of this study was to investigate the association between genetic polymorphisms in CASP7 and risk of IS. The CASP7 polymorphisms were genotyped using a TaqMan allelic discrimination assay. The expression levels of CASP7 mRNA were examined using quantitative polymerase chain reaction and luciferase activity was analyzed using the Dual Luciferase reporter assay. The rs12415607 in the promoter of CASP7 was associated with a reduced risk of IS (AA vs. CC: adjusted OR = 0.55, 95% CI: 0.38-0.80, P = 0.002; CA/AA vs. CC: adjusted OR = 0.70, 95% CI: 0.54-0.91, P = 0.007; AA vs. CC/CA: adjusted OR = 0.64, 95% CI: 0.46-0.90, P = 0.01; A vs. C: adjusted OR = 0.74, 95% CI: 0.62-0.89, P = 0.001). Moreover, the rs12415607 AA genotype carriers exhibited lower levels of CASP7 mRNA and the rs12415607 A allele decreased the promoter activity. These findings indicate that the rs12415607 A allele induces lower levels of transcriptional activity and CASP7 mRNA, and thus is associated with a reduced risk of IS.
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Affiliation(s)
- Zhaoshi Zheng
- No. 1 Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, 130031, P.R. China
| | - Songyan Liu
- No. 1 Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, 130031, P.R. China
| | - Chuheng Wang
- Department of Clinical Medicine (Grade 2017 Student), School of Basic Medicine, Zhengzhou University, Zhengzhou, Henan, 450001, P.R. China
| | - Chunhui Wang
- Department of Neurosurgery, the Hospital of Jilin Province, Changchun, Jilin, 130031, P.R. China
| | - Dong Tang
- No. 1 Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, 130031, P.R. China
| | - Yuqing Shi
- No. 1 Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, 130031, P.R. China
| | - Xuemei Han
- No. 1 Department of Neurology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, 130031, P.R. China.
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Wang J, Shao L, Rao T, Zhang W, Huang WH. Chemo-Preventive Potential of Falcarindiol-Enriched Fraction from Oplopanax elatus on Colorectal Cancer Interfered by Human Gut Microbiota. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2019; 47:1381-1404. [PMID: 31488036 DOI: 10.1142/s0192415x1950071x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Oplopanax elatus (Nakai) Nakai is an oriental herb, the polyyne-enriched fraction of which (PEFO) showed anticolorectal cancer (anti-CRC) effects. Other concomitant components, which are inevitably bio-transformed by gut microbiota after oral administration, might be interfere with the pharmacodynamics of polyynes. However, the influence of human gut microbiota on molecules from O. elatus possessing anticancer activity are yet unknown. In this study, the compounds in PEFO and PEFO incubated with human gut microbiota were analyzed and tentatively identified by HPLC-DAD-QTOF-MS. Two main polyynes ((3[Formula: see text]8[Formula: see text]-falcarindiol and oplopandiol) were not significantly decomposed, but some new unknown molecules were discovered during incubation. However, the antiproliferative effects of PEFO incubated with human gut microbiota for 72 h (PEFO I) were much lower than that of PEFO on HCT-116, SW-480, and HT-29 cells. Furthermore, PEFO possessed better anti-CRC activity in vivo, and significantly induced apoptosis of the CRC cells, which was associated with activation of caspase-3 according to the Western-blot results ([Formula: see text]). These results suggest anticolorectal cancer activity of polyynes might be antagonized by some bio-converted metabolites after incubation with human gut microbiota. Therefore, it might be better for CRC prevention if the polyynes could be orally administrated as purified compounds.
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Affiliation(s)
- Jin Wang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 110, Xiangya Road, Changsha 410008, P. R. China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, 110, Xiangya Road, Changsha 410008, P. R. China
| | - Li Shao
- Department of Pharmacognosy, School of Pharmacy, Hunan University of Chinese Medicine, 300, Xueshi Road, Changsha 410128, P. R. China
| | - Tai Rao
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 110, Xiangya Road, Changsha 410008, P. R. China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, 110, Xiangya Road, Changsha 410008, P. R. China
| | - Wei Zhang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 110, Xiangya Road, Changsha 410008, P. R. China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, 110, Xiangya Road, Changsha 410008, P. R. China
| | - Wei-Hua Huang
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 110, Xiangya Road, Changsha 410008, P. R. China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, 110, Xiangya Road, Changsha 410008, P. R. China
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Luo Y, Ma H, Zhou JJ, Li L, Chen SR, Zhang J, Chen L, Pan HL. Focal Cerebral Ischemia and Reperfusion Induce Brain Injury Through α2δ-1-Bound NMDA Receptors. Stroke 2019; 49:2464-2472. [PMID: 30355118 DOI: 10.1161/strokeaha.118.022330] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background and Purpose- Glutamate NMDARs (N-methyl-D-aspartate receptors) play a major role in the initiation of ischemic brain damage. However, NMDAR antagonists have no protective effects in stroke patients, possibly because they impair physiological functions of NMDARs. α2δ-1 (encoded by Cacna2d1) is strongly expressed in many brain regions. We determined the contribution of α2δ-1 to NMDAR hyperactivity and brain injury induced by ischemia and reperfusion. Methods- Mice were subjected to 90 minutes of middle cerebral artery occlusion followed by 24 hours of reperfusion. Neurological deficits, brain infarct volumes, and calpain/caspase-3 activity in brain tissues were measured. NMDAR activity of hippocampal CA1 neurons was measured in an in vitro ischemic model. Results- Middle cerebral artery occlusion increased α2δ-1 protein glycosylation in the cerebral cortex, hippocampus, and striatum. Coimmunoprecipitation showed that ischemia rapidly enhanced the α2δ-1-NMDAR physical interaction in the mouse brain tissue. Inhibiting α2δ-1 with gabapentin, uncoupling the α2δ-1-NMDAR interaction with an α2δ-1 C terminus-interfering peptide, or genetically ablating Cacna2d1 had no effect on basal NMDAR currents but strikingly abolished oxygen-glucose deprivation-induced NMDAR hyperactivity in hippocampal CA1 neurons. Systemic treatment with gabapentin or α2δ-1 C-terminus-interfering peptide or Cacna2d1 genetic knock-out reduced middle cerebral artery occlusion-induced infarct volumes, neurological deficit scores, and calpain/caspase-3 activation in brain tissues. Conclusions- α2δ-1 is essential for brain ischemia-induced neuronal NMDAR hyperactivity, and α2δ-1-bound NMDARs mediate brain damage caused by cerebral ischemia. Targeting α2δ-1-bound NMDARs, without impairing physiological α2δ-1-free NMDARs, may be a promising strategy for treating ischemic stroke.
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Affiliation(s)
- Yi Luo
- From the Department of Anesthesiology and Perioperative Medicine, Center for Neuroscience and Pain Research, University of Texas MD Anderson Cancer Center, Houston (Y.L., H.M., J.-J.Z., L.L., S.-R.C., J.Z., L.C., H.-L.P.).,Department of Clinical Laboratory Medicine, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China (Y.L.)
| | - Huijie Ma
- From the Department of Anesthesiology and Perioperative Medicine, Center for Neuroscience and Pain Research, University of Texas MD Anderson Cancer Center, Houston (Y.L., H.M., J.-J.Z., L.L., S.-R.C., J.Z., L.C., H.-L.P.).,Department of Physiology, Hebei Medical University, Shijiazhuang, China (H.M.)
| | - Jing-Jing Zhou
- From the Department of Anesthesiology and Perioperative Medicine, Center for Neuroscience and Pain Research, University of Texas MD Anderson Cancer Center, Houston (Y.L., H.M., J.-J.Z., L.L., S.-R.C., J.Z., L.C., H.-L.P.)
| | - Lingyong Li
- From the Department of Anesthesiology and Perioperative Medicine, Center for Neuroscience and Pain Research, University of Texas MD Anderson Cancer Center, Houston (Y.L., H.M., J.-J.Z., L.L., S.-R.C., J.Z., L.C., H.-L.P.)
| | - Shao-Rui Chen
- From the Department of Anesthesiology and Perioperative Medicine, Center for Neuroscience and Pain Research, University of Texas MD Anderson Cancer Center, Houston (Y.L., H.M., J.-J.Z., L.L., S.-R.C., J.Z., L.C., H.-L.P.)
| | - Jixiang Zhang
- From the Department of Anesthesiology and Perioperative Medicine, Center for Neuroscience and Pain Research, University of Texas MD Anderson Cancer Center, Houston (Y.L., H.M., J.-J.Z., L.L., S.-R.C., J.Z., L.C., H.-L.P.)
| | - Lin Chen
- From the Department of Anesthesiology and Perioperative Medicine, Center for Neuroscience and Pain Research, University of Texas MD Anderson Cancer Center, Houston (Y.L., H.M., J.-J.Z., L.L., S.-R.C., J.Z., L.C., H.-L.P.)
| | - Hui-Lin Pan
- From the Department of Anesthesiology and Perioperative Medicine, Center for Neuroscience and Pain Research, University of Texas MD Anderson Cancer Center, Houston (Y.L., H.M., J.-J.Z., L.L., S.-R.C., J.Z., L.C., H.-L.P.)
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46
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Down-regulation of cyclin-dependent kinase 5 attenuates p53-dependent apoptosis of hippocampal CA1 pyramidal neurons following transient cerebral ischemia. Sci Rep 2019; 9:13032. [PMID: 31506563 PMCID: PMC6737192 DOI: 10.1038/s41598-019-49623-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 07/10/2019] [Indexed: 01/09/2023] Open
Abstract
Abnormal activation of cyclin-dependent kinase 5 (Cdk5) is associated with pathophysiological conditions. Ischemic preconditioning (IPC) can provide neuroprotective effects against subsequent lethal ischemic insult. The objective of this study was to determine how Cdk5 and related molecules could affect neuroprotection in the hippocampus of gerbils after with IPC [a 2-min transient cerebral ischemia (TCI)] followed by 5-min subsequent TCI. Hippocampal CA1 pyramidal neurons were dead at 5 days post-TCI. However, treatment with roscovitine (a potent inhibitor of Cdk5) and IPC protected CA1 pyramidal neurons from TCI. Expression levels of Cdk5, p25, phospho (p)-Rb and p-p53 were increased in nuclei of CA1 pyramidal neurons at 1 and 2 days after TCI. However, these expressions were attenuated by roscovitine treatment and IPC. In particular, Cdk5, p-Rb and p-p53 immunoreactivities in their nuclei were decreased. Furthermore, TUNEL-positive CA1 pyramidal neurons were found at 5 days after TCI with increased expression levels of Bax, PUMA, and activated caspase-3. These TUNEL-positive cells and increased molecules were decreased by roscovitine treatment and IPC. Thus, roscovitine treatment and IPC could protect CA1 pyramidal neurons from TCI through down-regulating Cdk5, p25, and p-p53 in their nuclei. These findings indicate that down-regulating Cdk5 might be a key strategy to attenuate p53-dependent apoptosis of CA1 pyramidal neurons following TCI.
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47
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Toscano ECDB, Vieira ÉLM, Portela ACDC, Reis JLJ, Caliari MV, Giannetti AV, Gonçalves AP, Siqueira JM, Suemoto CK, Leite REP, Nitrini R, Teixeira AL, Rachid MA. Bcl-2/Bax ratio increase does not prevent apoptosis of glia and granular neurons in patients with temporal lobe epilepsy. Neuropathology 2019; 39:348-357. [PMID: 31392787 DOI: 10.1111/neup.12592] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/06/2019] [Accepted: 07/08/2019] [Indexed: 12/13/2022]
Abstract
Temporal lobe epilepsy (TLE) is usually associated with hippocampal sclerosis (HS), characterized by gliosis and neuronal loss, mainly in the cornus ammonis (CA). Regardless the type of HS, gliosis is associated with neuronal loss. Indeed, glial reactivation seems to induce both neuronal and glial apoptosis. Anti-apoptotic mechanisms are also activated in order to contain the cell death in chronic epilepsy. However, the role of the intrinsic apoptosis pathway in human TLE is unclear, mainly in relation to glial death. The purpose of this study was to evaluate the reactive gliosis areas in parallel with Bcl-2/Bax ratio and active caspase 3 immunoreactivity in hippocampi of TLE patients in comparison with control hippocampi. We also sought to investigate whether the levels of these markers were correlated with TLE clinical parameters. Paraffin-embedded sclerotic and control hippocampi were collected for immunohistochemical analyses of glial fibrillary acidic protein (GFAP), human leucocyte antigen DR (HLA-DR), neuronal nuclei protein (NeuN), Bax, Bcl-2 and active caspase 3. Sclerotic hippocampi presented higher immunoreactivity areas of GFAP and HLA-DR than controls, with similar values in HS types 1 and 2. Bcl-2 protein expression was increased in epileptic hippocampi, while Bax expression was similar to controls. Despite Bcl2/Bax ratio increase, granular neurons and glia exhibited active caspase 3 expression in TLE hippocampi, while controls did not show staining for the same marker. In conclusion, glial and neuronal death is increased in sclerotic hippocampi, independently of HS type, and co-localized with gliosis. Furthermore, Bcl-2/Bax ratio increase does not prevent expression of active caspase 3 by glia and granular neurons in TLE.
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Affiliation(s)
- Eliana C de Brito Toscano
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Neuroscience Division, Interdisciplinary Laboratory of Medical Investigation, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Érica L M Vieira
- Neuroscience Division, Interdisciplinary Laboratory of Medical Investigation, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ana C D C Portela
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Joice L J Reis
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Marcelo V Caliari
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Alexandre V Giannetti
- Hospital das Clínicas, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ana P Gonçalves
- Hospital das Clínicas, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Nuclei of Advanced Epilepsy Treatment - Felício Rocho Hospital, Belo Horizonte, Brazil
| | - José M Siqueira
- Nuclei of Advanced Epilepsy Treatment - Felício Rocho Hospital, Belo Horizonte, Brazil
| | - Claudia K Suemoto
- Laboratório de Fisiopatologia no Envelhecimento, Universidade de São Paulo, São Paulo, Brazil
| | - Renata E P Leite
- Laboratório de Fisiopatologia no Envelhecimento, Universidade de São Paulo, São Paulo, Brazil
| | - Ricardo Nitrini
- Laboratório de Fisiopatologia no Envelhecimento, Universidade de São Paulo, São Paulo, Brazil
| | - Antônio L Teixeira
- Neuroscience Division, Interdisciplinary Laboratory of Medical Investigation, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.,Neuropsychiatry Program, Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Milene A Rachid
- Departamento de Patologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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48
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Han AR, Yang JW, Na JM, Choi SY, Cho SW. Protective effects of N,4,5-trimethylthiazol-2-amine hydrochloride on hypoxia-induced β-amyloid production in SH-SY5Y cells. BMB Rep 2019. [PMID: 30355438 PMCID: PMC6675249 DOI: 10.5483/bmbrep.2019.52.7.231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Although hypoxic/ischemic injury is thought to contribute to the incidence of Alzheimer’s disease (AD), the molecular mechanism that determines the relationship between hypoxia-induced β-amyloid (Aβ) generation and development of AD is not yet known. We have now investigated the protective effects of N,4,5-trimethylthiazol-2-amine hydrochloride (KHG26702), a novel thiazole derivative, on oxygen-glucose deprivation (OGD)-reoxygenation (OGD-R)-induced Aβ production in SH-SY5Y human neuroblastoma cells. Pretreatment of these cells with KHG26702 significantly attenuated OGD-R-induced production of reactive oxygen species and elevation of levels of malondialdehyde, prostaglandin E2, interleukin 6 and glutathione, as well as superoxide dismutase activity. KHG26702 also reduced OGD-R-induced expression of the apoptotic protein caspase-3, the apoptosis regulator Bcl-2, and the autophagy protein becn-1. Finally, KHG26702 reduced OGD-R-induced Aβ production and cleavage of amyloid precursor protein, by inhibiting secretase activity and suppressing the autophagic pathway. Although supporting data from in vivo studies are required, our results indicate that KHG26702 may prevent neuronal cell damage from OGD-R-induced toxicity.
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Affiliation(s)
- A Reum Han
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Ji Woong Yang
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Jung-Min Na
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Soo Young Choi
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon 24252, Korea
| | - Sung-Woo Cho
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul 05505, Korea
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49
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Cai Y, Lin Y, Xiong X, Lu J, Zhou R, Jin Y, You Z, Ye H, Li F, Cheng N. Knockdown expression of MECR, a novel gene of mitochondrial FAS II inhibits growth and colony-formation, promotes apoptosis of hepatocelluar carcinoma cells. Biosci Trends 2019; 13:234-244. [PMID: 31178528 DOI: 10.5582/bst.2019.01109] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Mitochondrial trans-2-enoyl-CoA reductase (MECR) is a protein-coding gene, and the protein encoded by this gene is an oxidoreductase that catalyzes the last step in mitochondrial fatty acid synthesis (mtFASII). Numerous studies have shown disorder of lipid metabolism is closely related with malignance, especially in liver cancer. Through pre-experiment, we found that the expression of MECR gene was highly expressed in hepatocelluar carcinoma (HCC) cell lines in vitro. This suggests that the MECR gene may play a role of oncogene in HCC. Therefore, we conducted a preliminary experimental study on the role of MECR gene in HCC cells in vitro. Objective to explore whether the MECR gene can affect the malignant biological behavior of HCC. We selected HCC cell line BEL-7404 as experimental cell, which involves the highest expression of MECR in the pre-experiment. We constructed MECR knockdwon lentivirus vector, and then infected HCC cell lines to down-regulate MECR expression, and establish negative control group (NC). Through various experiments of cytology, our study showed that knockdown of MECR inhibited cell proliferation and colony formation, promoted apoptosis, and inhibited metastasis in HCC cell lines BEL-7404. MECR might serve as a novel gene therapeutic target for the treatment of HCC. Further study is needed to elucidate the signaling pathway through which MECR functions in HCC.
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Affiliation(s)
- Yulong Cai
- Department of Biliary Surgery, West China Hospital, Sichuan University
| | - Yixin Lin
- Department of Biliary Surgery, West China Hospital, Sichuan University
| | - Xianze Xiong
- Department of Biliary Surgery, West China Hospital, Sichuan University
| | - Jiong Lu
- Department of Biliary Surgery, West China Hospital, Sichuan University
| | - Rongxing Zhou
- Department of Biliary Surgery, West China Hospital, Sichuan University
| | - Yanwen Jin
- Department of Biliary Surgery, West China Hospital, Sichuan University
| | - Zhen You
- Department of Biliary Surgery, West China Hospital, Sichuan University
| | - Hui Ye
- Department of Biliary Surgery, West China Hospital, Sichuan University
| | - Fuyu Li
- Department of Biliary Surgery, West China Hospital, Sichuan University
| | - Nansheng Cheng
- Department of Biliary Surgery, West China Hospital, Sichuan University
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50
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Neurotherapeutic Effects of Bee Venom in a Rotenone-Induced Mouse Model of Parkinson’s Disease. NEUROPHYSIOLOGY+ 2019. [DOI: 10.1007/s11062-019-09777-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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