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Tomas-Sanchez C, Blanco-Alvarez VM, Gonzalez-Barrios JA, Martinez-Fong D, Soto-Rodriguez G, Brambila E, Gonzalez-Vazquez A, Aguilar-Peralta AK, Limón DI, Vargas-Castro V, Cebada J, Alatriste-Bueno V, Leon-Chavez BA. Prophylactic zinc and therapeutic selenium administration in adult rats prevents long-term cognitive and behavioral sequelae by a transient ischemic attack. Heliyon 2024; 10:e30017. [PMID: 38707461 PMCID: PMC11068621 DOI: 10.1016/j.heliyon.2024.e30017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 04/07/2024] [Accepted: 04/18/2024] [Indexed: 05/07/2024] Open
Abstract
The transient hypoxic-ischemic attack, also known as a minor stroke, can result in long-term neurological issues such as memory loss, depression, and anxiety due to an increase in nitrosative stress. The individual or combined administration of chronic prophylactic zinc and therapeutic selenium is known to reduce nitrosative stress in the first seven days post-reperfusion and, due to an antioxidant effect, prevent cell death. Besides, zinc or selenium, individually administered, also causes antidepressant and anxiolytic effects. Therefore, this work evaluated whether combining zinc and selenium could prevent stroke-elicited cognition and behavior deficits after 30 days post-reperfusion. Accordingly, we assessed the expression of growth factors at 7 days post-reperfusion, a four-time course of memory (from 7 to 28 days post-learning test), and cell proliferation, depression, and anxiety-like behavior at 30 days post-reperfusion. Male Wistar rats with a weight between 190 and 240 g) were treated with chronic prophylactic zinc administration with a concentration of 0.2 mg/kg for 15 days before common carotid artery occlusion (10 min) and then with therapeutic selenium (6 μg/kg) for 7 days post-reperfusion. Compared with individual administrations, the administration combined of prophylactic zinc and therapeutic selenium decreased astrogliosis, increased growth factor expression, and improved cell proliferation and survival in two regions, the hippocampus, and cerebral cortex. These effects prevented memory loss, depression, and anxiety-like behaviors. In conclusion, these results demonstrate that the prophylactic zinc administration combined with therapeutic selenium can reduce the long-term sequelae caused by the transient ischemic attack. Significance statement. A minor stroke caused by a transient ischemic attack can result in psychomotor sequelae that affect not only the living conditions of patients and their families but also the economy. The incidence of these micro-events among young people has increased in the world. Nonetheless, there is no deep understanding of how this population group responds to regular treatments (Ekker and et al., 2018) [1]. On the basis that zinc and selenium have antioxidant, anti-inflammatory, and regenerative properties in stroke animal models, our work explored whether the chronic combined administration of prophylactic zinc and therapeutic selenium could prevent neurological sequelae in the long term in a stroke rat model of unilateral common carotid artery occlusion (CCAO) by 10-min. Our results showed that this combined treatment provided a long-term neuroprotective effect by decreasing astrogliosis, memory loss, anxiety, and depression-like behavior.
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Affiliation(s)
- Constantino Tomas-Sanchez
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 sur y Av. San Claudio, 72570, Puebla, Mexico
| | - Victor Manuel Blanco-Alvarez
- Facultad de Enfermería, Benemérita Universidad Autónoma de Puebla, Av 25 Pte 1304, Colonia Volcanes, Puebla, Mexico
| | - Juan Antonio Gonzalez-Barrios
- Laboratorio de Medicina Genómica, Hospital regional 1° de Octubre, ISSSTE, Avenida Instituto Politécnico Nacional #1669, 07760, México D. F., Mexico
| | - Daniel Martinez-Fong
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Apartado Postal 14-740, 07000, México D.F., Mexico
- Nanoparticle Therapy Institute, 404 Avenida Monte Blanco, Aguascalientes, 20120, Mexico
| | - Guadalupe Soto-Rodriguez
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, 13 Sur 2702, Col. Volcanes, 72410, Puebla, Mexico
| | - Eduardo Brambila
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 sur y Av. San Claudio, 72570, Puebla, Mexico
| | - Alejandro Gonzalez-Vazquez
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, 13 Sur 2702, Col. Volcanes, 72410, Puebla, Mexico
| | - Ana Karina Aguilar-Peralta
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, 13 Sur 2702, Col. Volcanes, 72410, Puebla, Mexico
| | - Daniel I. Limón
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 sur y Av. San Claudio, 72570, Puebla, Mexico
| | - Viridiana Vargas-Castro
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 sur y Av. San Claudio, 72570, Puebla, Mexico
| | - Jorge Cebada
- Facultad de Medicina, Benemérita Universidad Autónoma de Puebla, 13 Sur 2702, Col. Volcanes, 72410, Puebla, Mexico
| | - Victorino Alatriste-Bueno
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 sur y Av. San Claudio, 72570, Puebla, Mexico
| | - Bertha Alicia Leon-Chavez
- Facultad de Ciencias Químicas, Benemérita Universidad Autónoma de Puebla, 14 sur y Av. San Claudio, 72570, Puebla, Mexico
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2
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Zhang S, Wang J, Hu W, He L, Tang Q, Li J, Jie M, Li X, Liu C, Ouyang Q, Yang S, Hu C. RNF112-mediated FOXM1 ubiquitination suppresses the proliferation and invasion of gastric cancer. JCI Insight 2023; 8:166698. [PMID: 37288663 DOI: 10.1172/jci.insight.166698] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 04/26/2023] [Indexed: 06/09/2023] Open
Abstract
Forkhead box M1 (FOXM1) plays a critical role in development physiologically and tumorigenesis pathologically. However, insufficient efforts have been dedicated to exploring the regulation, in particular the degradation of FOXM1. Here, the ON-TARGETplus siRNA library targeting E3 ligases was used to screen potential candidates to repress FOXM1. Of note, mechanism study revealed that RNF112 directly ubiquitinates FOXM1 in gastric cancer, resulting in a decreased FOXM1 transcriptional network and suppressing the proliferation and invasion of gastric cancer. Interestingly, the well-established small-molecule compound RCM-1 significantly enhanced the interaction between RNF112 and FOXM1, which further promoted FOXM1 ubiquitination and subsequently exerted promising anticancer effects in vitro and in vivo. Altogether, we demonstrate that RNF112 suppresses gastric cancer progression by ubiquitinating FOXM1 and highlight the RNF112/FOXM1 axis serves as both prognosis biomarker and therapeutic target in gastric cancer.
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Affiliation(s)
- Shengwei Zhang
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Jing Wang
- Medical Research Institute, Southwest University, Chongqing, China
| | - Weichao Hu
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Lijiao He
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Qingyun Tang
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Jie Li
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Mengmeng Jie
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Xinzhe Li
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Cheng Liu
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Qin Ouyang
- Department of Pharmaceutical Chemistry, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Shiming Yang
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
- Chongqing Municipality Clinical Research Center for Gastroenterology, Chongqing, China
| | - Changjiang Hu
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing, China
- Chongqing Municipality Clinical Research Center for Gastroenterology, Chongqing, China
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3
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Chen Y, Cui T, Xiao S, Li T, Zhong Y, Tang K, Guo J, Huang S, Chen J, Li J, Wang Q, Huang J, Pan H, Gao Y. Hepatic ZBTB22-mediated detoxification ameliorates acetaminophen-induced liver injury by inhibiting pregnane X receptor signaling. iScience 2023; 26:106318. [PMID: 36950116 PMCID: PMC10025966 DOI: 10.1016/j.isci.2023.106318] [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: 10/10/2022] [Revised: 01/30/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
Overdose acetaminophen (APAP) can cause acute liver injury (ALI), but the underlying mechanism remains undetermined. This study explored the role of hepatic Zinc Finger And BTB Domain Containing 22 (ZBTB22) in defense against APAP-mediated hepatotoxicity. The results showed that hepatic ZBTB22 expression was significantly reduced in patients with ALI and mice. In mouse primary hepatocytes (MPHs), ZBTB22 deletion aggravated APAP overdose-induced ALI, whereas ZBTB22 overexpression attenuated that pathological progression. The results were further verified in ZBTB22 over-express or knockout mice models. In parallel, hepatocyte-specific ZBTB22 knockout also enhanced ALI. Furthermore, ZBTB22 decreased pregnane X receptor (PXR) expression, and the PXR activator pregnane-16α-carbonitrile suppressed the protective effect of ZBTB22 in APAP-induced ZBTB22-overexpressing mice. Collectively, our findings highlight the protective effect of ZBTB22 against APAP-induced ALI and unravel PXR signaling as the potential mechanism. Strategies to increase hepatic ZBTB22 expression represent a promising therapeutic approach for APAP overdose-induced ALI.
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Affiliation(s)
- Yingjian Chen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
| | - Tianqi Cui
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
| | - Shaorong Xiao
- School of Basic Medical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
| | - Tianyao Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
| | - Yadi Zhong
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
| | - Kaijia Tang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
| | - Jingyi Guo
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
| | - Shangyi Huang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
| | - Jiabing Chen
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
| | - Jiayu Li
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
| | - Qi Wang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
- Corresponding author
| | - Jiawen Huang
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
- Corresponding author
| | - Huafeng Pan
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
- Corresponding author
| | - Yong Gao
- Science and Technology Innovation Center, Guangzhou University of Chinese Medicine, Guangzhou 510080, China
- Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine in Prevention and Treatment of Tumor, Nanjing University of Chinese Medicine, Nanjing 210023, China
- Corresponding author
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Huang X, Ye Y, Zhang J, Zhang X, Ma H, Zhang Y, Fu X, Tang J, Jiang N, Han Y, Liu H, Chen H. Reactive Oxygen Species Scavenging Functional Hydrogel Delivers Procyanidins for the Treatment of Traumatic Brain Injury in Mice. ACS APPLIED MATERIALS & INTERFACES 2022; 14:33756-33767. [PMID: 35833273 DOI: 10.1021/acsami.2c04930] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Traumatic brain injury (TBI) is accompanied by the overload of reactive oxygen species (ROS), which can result in secondary brain injury. Although procyanidins (PCs) have a powerful free radical scavenging capability and have been widely studied in the treatment of TBI, conventional systemic drug therapy cannot make the drug reach the targeted area in the early stage of TBI and will cause systemic side effects because of the presence of the blood-brain barrier (BBB). To address this tissue, we designed and fabricated a ROS-scavenging functional hydrogel loaded PC (GelMA-PPS/PC) to deliver the drug by responding to the traumatic microenvironment. In situ injection of the GelMA-PPS/PC hydrogel effectively avoided the BBB and was directly applied to the surface of brain tissue to target the traumatic area. Hydrophobic poly(propylene sulfide)60 (PPS60), an ROS quencher and H2O2-responsive substance, was covalently bound to GelMA and exposed in response to the trauma microenvironment. At the same time, the H2O2 response of PPS60 further caused the structure of the hydrogel to degrade and release the encapsulated PC. Then PC could regulate the oxidative stress response in the cells and synergistically deplete ROS to play a neurotrophic protective role. This work suggests a novel method for the treatment of secondary brain injury by inhibiting the oxidative stress response after TBI.
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Affiliation(s)
- Xuyang Huang
- Department of Neurosurgery, The Suqian Clinical College of Xuzhou Medical University, Jiangsu University, Suqian 223800, People's Republic of China
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, People's Republic of China
| | - Yongqing Ye
- Department of Neurosurgery, The Suqian Clinical College of Xuzhou Medical University, Jiangsu University, Suqian 223800, People's Republic of China
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, People's Republic of China
| | - Jianyong Zhang
- Department of Neurosurgery, The Suqian Clinical College of Xuzhou Medical University, Jiangsu University, Suqian 223800, People's Republic of China
| | - Xuefeng Zhang
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, People's Republic of China
| | - Hongwei Ma
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, People's Republic of China
| | - Yongkang Zhang
- Institute of Nervous System Diseases, Xuzhou Medical University, Xuzhou 221002, People's Republic of China
| | - Xianhua Fu
- Department of Neurosurgery, The Suqian Clinical College of Xuzhou Medical University, Jiangsu University, Suqian 223800, People's Republic of China
| | - JiaJia Tang
- Department of Neurosurgery, The Suqian Clinical College of Xuzhou Medical University, Jiangsu University, Suqian 223800, People's Republic of China
| | - Ning Jiang
- The Suqian Clinical College of Xuzhou Medical University, Jiangsu University, Suqian 223800, People's Republic of China
| | - Yuhan Han
- Department of Neurosurgery, The Suqian Clinical College of Xuzhou Medical University, Jiangsu University, Suqian 223800, People's Republic of China
| | - Hongmei Liu
- Department of Biomedical Engineering, Southern University of Science and Technology, Guangdong 518055, People's Republic of China
| | - Honglin Chen
- Department of Neurosurgery, The Suqian Clinical College of Xuzhou Medical University, Jiangsu University, Suqian 223800, People's Republic of China
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5
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de Sousa Maciel I, Sales AJ, Casarotto PC, Castrén E, Biojone C, Joca SRL. Nitric Oxide Synthase inhibition counteracts the stress-induced DNA methyltransferase 3b expression in the hippocampus of rats. Eur J Neurosci 2022; 55:2421-2434. [PMID: 33170977 DOI: 10.1111/ejn.15042] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 10/22/2020] [Accepted: 11/02/2020] [Indexed: 11/29/2022]
Abstract
It has been postulated that the activation of NMDA receptors (NMDAr) and nitric oxide (NO) production in the hippocampus is involved in the behavioral consequences of stress. Stress triggers NMDAr-induced calcium influx in limbic areas, such as the hippocampus, which in turn activates neuronal NO synthase (nNOS). Inhibition of nNOS or NMDAr activity can prevent stress-induced effects in animal models, but the molecular mechanisms behind this effect are still unclear. In this study, cultured hippocampal neurons treated with NMDA or dexamethasone showed an increased of DNA methyltransferase 3b (DNMT3b) mRNA expression, which was blocked by pre-treatment with nNOS inhibitor nω -propyl-l-arginine (NPA). In rats submitted to the Learned Helplessness paradigm (LH), we observed that inescapable stress increased DNMT3b mRNA expression at 1h and 24h in the hippocampus. The NOS inhibitors 7-NI and aminoguanidine (AMG) decreased the number of escape failures in LH and counteracted the changes in hippocampal DNMT3b mRNA induced in this behavioral paradigm. Altogether, our data suggest that NO produced in response to NMDAr activation following stress upregulates DNMT3b in the hippocampus.
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Affiliation(s)
- Izaque de Sousa Maciel
- School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto - SP, Brazil
| | - Amanda J Sales
- School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto - SP, Brazil
| | | | - Eero Castrén
- Neuroscience Center, HiLIFE, University of Helsinki, Finland
| | | | - Sâmia R L Joca
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto -SP, Brazil
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6
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Yu Q, Liu W, Chen Z, Zhang M. Specificity Protein 1: A Protein With a Two-Sided Role in Ischemic Stroke. Front Cell Neurosci 2022; 15:757670. [PMID: 34970121 PMCID: PMC8712767 DOI: 10.3389/fncel.2021.757670] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/15/2021] [Indexed: 11/23/2022] Open
Abstract
Stroke is one of the leading causes of death and disability worldwide. However, there is a lack of effective medications to speed up the recovery process. Ischemic stroke, as the result of cerebral infarction or cerebral artery narrowing, is accompanied by hemiplegia or impaired consciousness. There are many transcription factors involved in the development of this condition, whose alterations can influence or signal the prognostic outcomes of ischemic stroke. Among them, the augmented expression of specificity protein 1 (SP1) can participate in the progression of the disease by binding DNA to regulate the transcriptions of many genes. Different studies have provided different answers as to whether SP1 plays a positive or a negative role in ischemic stroke. On the one hand, SP1 can play a cytoprotective role as both an antioxidant and anti-apoptotic agent for neurons and glial cells. On the other hand, it can also damage neuronal cells by promoting inflammation and exacerbating brain edema. In this review, we highlight the roles of SP1 in ischemic stroke and shed light on the underlying mechanism.
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Affiliation(s)
- Qinyang Yu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Wangyang Liu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Zhuohui Chen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Mengqi Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
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7
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Guo HJ, Wang LJ, Wang C, Guo DZ, Xu BH, Guo XQ, Li H. Identification of an Apis cerana zinc finger protein 41 gene and its involvement in the oxidative stress response. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2021; 108:e21830. [PMID: 34288081 DOI: 10.1002/arch.21830] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 06/17/2021] [Accepted: 06/18/2021] [Indexed: 06/13/2023]
Abstract
Zinc finger proteins (ZFPs) are a class of transcription factors that contain zinc finger domains and play important roles in growth, aging, and responses to abiotic and biotic stresses. These proteins activate or inhibit gene transcription by binding to single-stranded DNA or RNA and through RNA/DNA bidirectional binding and protein-protein interactions. However, few studies have focused on the oxidation resistance functions of ZFPs in insects, particularly Apis cerana. In the current study, we identified a ZFP41 gene from A. cerana, AcZFP41, and verified its function in oxidative stress responses. Real-time quantitative polymerase chain reaction showed that the transcription level of AcZFP41 was upregulated to different degrees during exposure to oxidative stress, including that induced by extreme temperature, UV radiation, or pesticides. In addition, the silencing of AcZFP41 led to changes in the expression patterns of some known antioxidant genes. Moreover, the activities of the antioxidant enzymes catalase (CAT), superoxide dismutase (SOD), peroxidase (POD), and glutathione S-transferase (GST) in AcZFP41-silenced honeybees were higher than those in a control group. In summary, the data indicate that AcZFP41 is involved in the oxidative stress response. The results provide a theoretical basis for further studies of zinc finger proteins and improve our understanding of the antioxidant mechanisms of honeybees.
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Affiliation(s)
- Hui-Juan Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, China
| | - Li-Jun Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, China
| | - Chen Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, China
| | - De-Zheng Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, China
| | - Bao-Hua Xu
- College of Animal Science and Technology, Shandong Agricultural University, Taian, Shandong, China
| | - Xing-Qi Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, China
| | - Han Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Taian, Shandong, China
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8
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Chiareli RA, Carvalho GA, Marques BL, Mota LS, Oliveira-Lima OC, Gomes RM, Birbrair A, Gomez RS, Simão F, Klempin F, Leist M, Pinto MCX. The Role of Astrocytes in the Neurorepair Process. Front Cell Dev Biol 2021; 9:665795. [PMID: 34113618 PMCID: PMC8186445 DOI: 10.3389/fcell.2021.665795] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Accepted: 04/29/2021] [Indexed: 12/17/2022] Open
Abstract
Astrocytes are highly specialized glial cells responsible for trophic and metabolic support of neurons. They are associated to ionic homeostasis, the regulation of cerebral blood flow and metabolism, the modulation of synaptic activity by capturing and recycle of neurotransmitters and maintenance of the blood-brain barrier. During injuries and infections, astrocytes act in cerebral defense through heterogeneous and progressive changes in their gene expression, morphology, proliferative capacity, and function, which is known as reactive astrocytes. Thus, reactive astrocytes release several signaling molecules that modulates and contributes to the defense against injuries and infection in the central nervous system. Therefore, deciphering the complex signaling pathways of reactive astrocytes after brain damage can contribute to the neuroinflammation control and reveal new molecular targets to stimulate neurorepair process. In this review, we present the current knowledge about the role of astrocytes in brain damage and repair, highlighting the cellular and molecular bases involved in synaptogenesis and neurogenesis. In addition, we present new approaches to modulate the astrocytic activity and potentiates the neurorepair process after brain damage.
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Affiliation(s)
| | | | | | - Lennia Soares Mota
- Department of Pharmacology, Federal University of Goias, Goiânia, Brazil
| | | | | | - Alexander Birbrair
- Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Renato Santiago Gomez
- Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Fabrício Simão
- Research Division, Vascular Cell Biology, Joslin Diabetes Center and Harvard Medical School, Boston, MA, United States
| | | | - Marcel Leist
- Konstanz Research School Chemical Biology, University of Konstanz, Konstanz, Germany
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9
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Tsai YT, Wu CC, Ko CY, Hsu TI, Chang WC, Lo WL, Chuang JY. Correlation between the expression of cancer stem cell marker BMI1 and glioma prognosis. Biochem Biophys Res Commun 2021; 550:113-119. [PMID: 33691197 DOI: 10.1016/j.bbrc.2021.02.140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 02/26/2021] [Indexed: 12/28/2022]
Abstract
B-cell-specific Moloney murine leukemia virus integration site 1 (BMI1) appears to be essential for promoting certain types of cancer, and its inhibition effectively reduced the stemness of cancer cells. Therefore, this study aimed to investigate the potential role of BMI1 in glioma. To this end, we first investigated BMI1 expression in brain tumors using microarray datasets in ONCOMINE, which indicated that BMI1 levels were not commonly increased in clinical brain tumors. Moreover, survival plots in PROGgeneV2 also showed that BMI1 expression was not significantly associated with reduced survival in glioma patients. Interestingly, stressful serum deprivation and anchorage independence growth conditions led to an increased BMI1 expression in glioma cells. A stress-responsive pathway, HDAC/Sp1, was further identified to regulate BMI1 expression. The HDAC inhibitor vorinostat (SAHA) prevented Sp1 binding to the BMI1 promoter, leading to a decreased expression of BMI1 and attenuating tumor growth of TMZ-resistant glioma xenografts. Importantly, we further performed survival analysis using PROGgeneV2 and found that an elevated expression of HDAC1,3/Sp1/BMI1 but not BMI1 alone showed an increased risk of death in both high- and low-grade glioma patients. Thus, HDAC-mediated Sp1 deacetylation is critical for BMI1 regulation to attenuate stress- and therapy-induced death in glioma cells, and the HDAC/Sp1 axis is more important than BMI1 and appears as a therapeutic target to prevent recurrence of malignant glioma cells persisting after primary therapy.
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Affiliation(s)
- Yu-Ting Tsai
- Graduate Institute of Medical Sciences, Taipei Medical University, Taiwan
| | - Chung-Che Wu
- Department of Neurosurgery, Taipei Medical University Hospital, Taiwan; Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taiwan
| | - Chiung-Yuan Ko
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taiwan
| | - Tsung-I Hsu
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taiwan; TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taiwan; Cell Physiology and Molecular Image Research Center, Taipei Medical University-Wan Fang Hospital, Taiwan
| | - Wen-Chang Chang
- Graduate Institute of Medical Sciences, Taipei Medical University, Taiwan
| | - Wei-Lun Lo
- Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taiwan; Division of Neurosurgery, Taipei Medical University-Shuang-Ho Hospital, Taiwan.
| | - Jian-Ying Chuang
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taiwan; TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taiwan; Cell Physiology and Molecular Image Research Center, Taipei Medical University-Wan Fang Hospital, Taiwan.
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Hussain I, Raza RZ, Ali S, Abrar M, Abbasi AA. Molecular signatures of selection on the human GLI3 associated central nervous system specific enhancers. Dev Genes Evol 2021; 231:21-32. [PMID: 33655411 DOI: 10.1007/s00427-021-00672-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 02/09/2021] [Indexed: 11/25/2022]
Abstract
The zinc finger-containing transcription factor Gli3 is a key mediator of Hedgehog (Hh) signaling pathway. In vertebrates, Gli3 has widespread expression pattern during early embryonic development. Along the anteroposterior axes of the central nervous system (CNS), dorsoventral neural pattern elaboration is achieved through Hh mediated spatio-temporal deployment of Gli3 transcripts. Previously, we and others uncovered a set of enhancers that mediate many of the known aspects of Gli3 expression during neurogenesis. However, the potential role of Gli3 associated enhancers in trait evolution has not yet received any significant attention. Here, we investigate the evolutionary patterns of Gli3 associated CNS-specific enhancers that have been reported so far. A subset of these enhancers has undergone an accelerated rate of molecular evolution in the human lineage in comparison to other primates/mammals. These fast-evolving enhancers have acquired human-specific changes in transcription factor binding sites (TFBSs). These human-unique changes within subset of Gli3 associated CNS-specific enhancers were further validated as single nucleotide polymorphisms through 1000 Genome Project Phase 3 data. This work not only infers the molecular evolutionary patterns of Gli3 associated enhancers but also provides clues for putative genetic basis of the population-specificity of gene expression regulation.
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Affiliation(s)
- Irfan Hussain
- National Center for Bioinformatics, Program of Comparative and Evolutionary Genomics, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Rabail Zehra Raza
- Department of Biological Sciences, National University of Medical Sciences, The Mall, Rawalpindi, Pakistan
| | - Shahid Ali
- National Center for Bioinformatics, Program of Comparative and Evolutionary Genomics, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Muhammad Abrar
- National Center for Bioinformatics, Program of Comparative and Evolutionary Genomics, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Amir Ali Abbasi
- National Center for Bioinformatics, Program of Comparative and Evolutionary Genomics, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
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11
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Kuo CJ, Lee KH, Huang CC, Wang IF, Hsieh CCJ, Lin HC, Lee YC. Purα regulates the induction of Znf179 transcription during neuronal differentiation. Biochem Biophys Res Commun 2020; 533:1477-1483. [PMID: 33333713 DOI: 10.1016/j.bbrc.2020.10.047] [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: 10/16/2020] [Accepted: 10/17/2020] [Indexed: 11/15/2022]
Abstract
Development of the mammalian central nervous system is an important process, which is accomplished through precise regulations of many different genes. Zinc finger protein 179 (Znf179) is one of the essential genes that plays a critical role in neuronal differentiation. In our previous study, Znf179 knockout mice displayed brain malformation and impaired brain functions. We have also previously shown that Znf179 involves in cell cycle regulation, but the regulatory mechanism of Znf179 expression is not yet fully characterized. Herein, we identified that Purα is an essential factor for the promotor activity of Znf179. We also showed concurrent expression of Znf179 and Purα during neuronal differentiation. We also found that overexpression of Purα increased Znf179 expression in neuronal differentiated P19 cells. Through its direct binding to Znf179, as shown using DAPA, Purα upregulates Znf179 expression, suggesting that Purα is important for the regulation of Znf179 expression during neuronal differentiation. Our data indicated that Purα is involved in the transcriptional regulation of Znf179 gene during neuronal differentiation, and is indispensable during the brain development.
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Affiliation(s)
- Chu-Jen Kuo
- Health Management Center, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan; Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University and National Health Research Institutes, Taipei, Taiwan
| | - Kuen-Haur Lee
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Chi-Chen Huang
- PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan; Research Center of Neuroscience, Taipei Medical University, Taipei, Taiwan
| | - I-Fang Wang
- Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Christine Chin-Jung Hsieh
- Taiwan International Graduate Program in Interdisciplinary Neuroscience, National Yang-Ming University and Academia Sinica, Taipei, Taiwan; Department of Biomedical Engineering, National Yang-Ming University, Taipei, Taiwan
| | - Hsin-Chuan Lin
- PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan; Research Center of Neuroscience, Taipei Medical University, Taipei, Taiwan.
| | - Yi-Chao Lee
- PhD Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan; Research Center of Neuroscience, Taipei Medical University, Taipei, Taiwan.
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12
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Yang WB, Hsu CC, Hsu TI, Liou JP, Chang KY, Chen PY, Liu JJ, Yang ST, Wang JY, Yeh SH, Chen RM, Chang WC, Chuang JY. Increased activation of HDAC1/2/6 and Sp1 underlies therapeutic resistance and tumor growth in glioblastoma. Neuro Oncol 2020; 22:1439-1451. [PMID: 32328646 PMCID: PMC7566541 DOI: 10.1093/neuonc/noaa103] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Glioblastoma is associated with poor prognosis and high mortality. Although the use of first-line temozolomide can reduce tumor growth, therapy-induced stress drives stem cells out of quiescence, leading to chemoresistance and glioblastoma recurrence. The specificity protein 1 (Sp1) transcription factor is known to protect glioblastoma cells against temozolomide; however, how tumor cells hijack this factor to gain resistance to therapy is not known. METHODS Sp1 acetylation in temozolomide-resistant cells and stemlike tumorspheres was analyzed by immunoprecipitation and immunoblotting experiments. Effects of the histone deacetylase (HDAC)/Sp1 axis on malignant growth were examined using cell proliferation-related assays and in vivo experiments. Furthermore, integrative analysis of gene expression with chromatin immunoprecipitation sequencing and the recurrent glioblastoma omics data were also used to further determine the target genes of the HDAC/Sp1 axis. RESULTS We identified Sp1 as a novel substrate of HDAC6, and observed that the HDAC1/2/6/Sp1 pathway promotes self-renewal of malignancy by upregulating B cell-specific Mo-MLV integration site 1 (BMI1) and human telomerase reverse transcriptase (hTERT), as well as by regulating G2/M progression and DNA repair via alteration of the transcription of various genes. Importantly, HDAC1/2/6/Sp1 activation is associated with poor clinical outcome in both glioblastoma and low-grade gliomas. However, treatment with azaindolyl sulfonamide, a potent HDAC6 inhibitor with partial efficacy against HDAC1/2, induced G2/M arrest and senescence in both temozolomide-resistant cells and stemlike tumorspheres. CONCLUSION Our study uncovers a previously unknown regulatory mechanism in which the HDAC6/Sp1 axis induces cell division and maintains the stem cell population to fuel tumor growth and therapeutic resistance.
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Affiliation(s)
- Wen-Bin Yang
- Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, Taiwan
- The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Che-Chia Hsu
- Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, Taiwan
- Department of Cancer Biology, Wake Forest Baptist Medical Center, Wake Forest University, Winston-Salem, North Carolina, USA
| | - Tsung-I Hsu
- The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, Taiwan
| | - Jing-Ping Liou
- The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
- School of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | - Kwang-Yu Chang
- National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
| | - Pin-Yuan Chen
- Department of Neurosurgery, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
| | - Jr-Jiun Liu
- The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Shung-Tai Yang
- Division of Neurosurgery, Taipei Medical University-Shuang Ho Hospital Ministry of Health and Welfare, New Taipei, Taiwan
| | - Jia-Yi Wang
- Department of Neurosurgery, Taipei Medical University Hospital, Taipei, Taiwan
| | - Shiu-Hwa Yeh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli, Taiwan
| | - Ruei-Ming Chen
- Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, Taiwan
| | - Wen-Chang Chang
- Graduate Institute of Medical Sciences, Taipei Medical University, Taipei, Taiwan
| | - Jian-Ying Chuang
- The Ph.D. Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, Taiwan
- Cell Physiology and Molecular Image Research Center, Taipei Medical University-Wan Fang Hospital, Taipei, Taiwan
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13
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Wei Z, Qi X, Chen Y, Xia X, Zheng B, Sun X, Zhang G, Wang L, Zhang Q, Xu C, Jiang S, Li X, Xie B, Liao X, Zhu A. Bioinformatics method combined with logistic regression analysis reveal potentially important miRNAs in ischemic stroke. Biosci Rep 2020; 40:BSR20201154. [PMID: 32744319 PMCID: PMC7432999 DOI: 10.1042/bsr20201154] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 07/13/2020] [Accepted: 07/31/2020] [Indexed: 12/12/2022] Open
Abstract
PURPOSE The present study aimed to investigate the comprehensive differential expression profile of microRNAs (miRNAs) by screening for miRNA expression in ischemic stroke and normal samples. METHODS Differentially expressed miRNA (DEM) analysis was conducted using limma R Bioconductor package. Target genes of DEMs were identified from TargetScanHuman and miRTarBase databases. Functional enrichment analysis of the target genes was performed using clusterProfiler R Bioconductor package. The miRNA-based ischemic stroke diagnostic signature was constructed via logistic regression analysis. RESULTS Compared with the normal cohort, a total of 14 DEMs, including 5 up-regulated miRNAs and 9 down-regulated miRNAs, were identified in ischemic stroke patients. These DEMs have 1600 regulatory targets. Using a logistic regression model, the top five miRNAs were screened for constructing an miRNA-based ischemic stroke diagnostic signature. Using the miRNA-mRNA interaction pairs, two target genes (specificity protein 1 (SP1) and Argonaute 1 (AGO1)) were speculated to be the primary genes of ischemic stroke. DISCUSSION AND CONCLUSION Here, several potential miRNAs biomarkers were identified and an miRNA-based diagnostic signature for ischemic stroke was established, which can be a valuable reference for future clinical researches.
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Affiliation(s)
- Zhiqiang Wei
- Department of Neurology, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Xingdi Qi
- Public Administration, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Yan Chen
- Department of Neurology, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Xiaoshuang Xia
- Department of Neurology, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Boyu Zheng
- Department of Geriatric, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Xugang Sun
- Department of Geriatric, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Guangming Zhang
- Department of Geriatric, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Ling Wang
- Department of Geriatric, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Qi Zhang
- Department of Geriatric, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Chen Xu
- Department of Geriatric, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Shihe Jiang
- Department of Geriatric, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Xiulian Li
- Department of Geriatric, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Bingxin Xie
- Department of Geriatric, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Xiaohui Liao
- Department of Geriatric, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
| | - Ai Zhu
- Department of Geriatric, The Second Hospital of Tianjin Medical University, Tianjin 300211, P.R. China
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14
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Sp1 in Astrocyte Is Important for Neurite Outgrowth and Synaptogenesis. Mol Neurobiol 2019; 57:261-277. [PMID: 31317491 DOI: 10.1007/s12035-019-01694-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 07/03/2019] [Indexed: 02/04/2023]
Abstract
In this study, we found that Sp1 was highly expressed in astrocytes, implying that Sp1 might be important for the function of astrocytes. Sp1/GFAP-Cre-ERT2 conditional knockout mice were constructed to study the role of Sp1 in astrocytes. Knockout of Sp1 in astrocytes altered astrocytic morphology and decreased GFAP expression in the cortex and hippocampus but did not affect cell viability. Loss of Sp1 in astrocytes decreased the number of neurons in the cortex and hippocampus. Conditioned medium from primary astrocytes with Sp1 knockout disrupted neuronal dendritic outgrowth and synapse formation, resulting in abnormal learning, memory, and motor behavior. Sp1 knockout in astrocytes altered gene expression, including decreasing the expression of Toll-like receptor 2 and Cfb and increasing the expression of C1q and C4Bp, thereby affecting neurite outgrowth and synapse formation, resulting in disordered neuron function. Studying these gene regulations might be beneficial to understanding neuronal development and brain injury prevention.
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15
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Lomash RM, Petralia RS, Holtzclaw LA, Tsuda MC, Wang YX, Badger JD, Cameron HA, Youle RJ, Roche KW. Neurolastin, a dynamin family GTPase, translocates to mitochondria upon neuronal stress and alters mitochondrial morphology in vivo. J Biol Chem 2019; 294:11498-11512. [PMID: 31177092 DOI: 10.1074/jbc.ra118.007245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 06/03/2019] [Indexed: 02/05/2023] Open
Abstract
Neurolastin is a dynamin family GTPase that also contains a RING domain and exhibits both GTPase and E3 ligase activities. It is specifically expressed in the brain and is important for synaptic transmission, as neurolastin knockout animals have fewer dendritic spines and exhibit a reduction in functional synapses. Our initial study of neurolastin revealed that it is membrane-associated and partially co-localizes with endosomes. Using various biochemical and cell-culture approaches, we now show that neurolastin also localizes to mitochondria in HeLa cells, cultured neurons, and brain tissue. We found that the mitochondrial localization of neurolastin depends upon an N-terminal mitochondrial targeting sequence and that neurolastin is imported into the mitochondrial intermembrane space. Although neurolastin was only partially mitochondrially localized at steady state, it displayed increased translocation to mitochondria in response to neuronal stress and mitochondrial fragmentation. Interestingly, inactivation or deletion of neurolastin's RING domain also increased its mitochondrial localization. Using EM, we observed that neurolastin knockout animals have smaller but more numerous mitochondria in cerebellar Purkinje neurons, indicating that neurolastin regulates mitochondrial morphology. We conclude that the brain-specific dynamin GTPase neurolastin exhibits stress-responsive localization to mitochondria and is required for proper mitochondrial morphology.
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Affiliation(s)
- Richa Madan Lomash
- Receptor Biology Section, NINDS, National Institutes of Health, Bethesda, Maryland 20892
| | - Ronald S Petralia
- Advanced Imaging Core, NIDCD, National Institutes of Health, Bethesda, Maryland 20892
| | - Lynne A Holtzclaw
- Microscopy and Imaging Core, NICHD, National Institutes of Health, Bethesda, Maryland 20892
| | - Mumeko C Tsuda
- Section on Neuroplasticity, NIMH, National Institutes of Health, Bethesda, Maryland 20892
| | - Ya-Xian Wang
- Advanced Imaging Core, NIDCD, National Institutes of Health, Bethesda, Maryland 20892
| | - John D Badger
- Receptor Biology Section, NINDS, National Institutes of Health, Bethesda, Maryland 20892
| | - Heather A Cameron
- Section on Neuroplasticity, NIMH, National Institutes of Health, Bethesda, Maryland 20892
| | - Richard J Youle
- Surgical Neurology Branch, NINDS, National Institutes of Health, Bethesda, Maryland 20892
| | - Katherine W Roche
- Receptor Biology Section, NINDS, National Institutes of Health, Bethesda, Maryland 20892
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16
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Lee YJ, Kim WI, Kim SY, Cho SW, Nam HS, Lee SH, Cho MK. Flavonoid morin inhibits proliferation and induces apoptosis of melanoma cells by regulating reactive oxygen species, Sp1 and Mcl-1. Arch Pharm Res 2019; 42:531-542. [PMID: 31049822 DOI: 10.1007/s12272-019-01158-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 04/22/2019] [Indexed: 01/21/2023]
Abstract
Reactive oxygen species (ROS) is associated with cancer progression in different cancers, including melanoma. It also affects specificity protein (Sp1), a transcription factor. Flavonoid morin is known to inhibit growth of cancer cells, including lung cancer and breast cancer. Herein, we hypothesized that morin can inhibit cancer activities in melanoma by altering ROS generation. The aim of this study is to determine the effects of morin and its underlying mechanisms in melanoma cells. Effects of morin on cell proliferation and apoptosis were determined using standardized assays. Changes in pro-apoptotic and anti-apoptotic proteins were analyzed by western blot analysis. Cellular ROS levels and mitochondrial function were evaluated by measuring DCF-DA fluorescence and rhodamine-123 fluorescence intensities, respectively. Morin induced ROS production and apoptosis, as presented by increased proportion of cells with Annexin V-PE(+) staining and sub-G0/G1 peak in cell cycle analysis. It also downregulated Sp1, Mcl-1, Bcl-2, and caspase-3 but upregulated cleaved caspase-3, Bax, and PUMA. In immunohistochemical staining, Sp1 was overexpressed in melanoma tissues compared to normal skin tissues. Collectively, our data suggest that morin can induce apoptosis of melanoma cells by regulating pro-apoptotic and anti-apoptotic proteins through ROS, and may be a potential substance for treatment of melanoma.
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Affiliation(s)
- Yoon Jin Lee
- Molecular Cancer Research, Soonchunhyang University College of Medicine, Cheonan, 31151, Republic of Korea
| | - Woo Il Kim
- Department of Dermatology, Soonchunhyang University Hospital, Seoul, 04401, Republic of Korea
| | - Soo Young Kim
- Department of Dermatology, Soonchunhyang University Hospital, Seoul, 04401, Republic of Korea
| | - Sung Woo Cho
- Molecular Cancer Research, Soonchunhyang University College of Medicine, Cheonan, 31151, Republic of Korea
| | - Hae Seon Nam
- Molecular Cancer Research, Soonchunhyang University College of Medicine, Cheonan, 31151, Republic of Korea
| | - Sang Han Lee
- Molecular Cancer Research, Soonchunhyang University College of Medicine, Cheonan, 31151, Republic of Korea
| | - Moon Kyun Cho
- Department of Dermatology, Soonchunhyang University Hospital, Seoul, 04401, Republic of Korea.
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Coenzyme Q10 Protects Astrocytes from Ultraviolet B-Induced Damage Through Inhibition of ERK 1/2 Pathway Overexpression. Neurochem Res 2019; 44:1755-1763. [PMID: 31093903 DOI: 10.1007/s11064-019-02812-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 05/02/2019] [Accepted: 05/04/2019] [Indexed: 01/04/2023]
Abstract
Overexpression of extracellular signal-regulated kinase ½ (ERK ½) signaling pathway leads to overproduction of reactive oxygen species (ROS) which induces oxidative stress. Coenzyme Q10 (CoQ10) scavenges ROS and protects cells against oxidative stress. The present study was designed to examine whether the protection of Coenzyme Q10 against oxidative damage in astrocytes is through regulating ERK 1/2 pathway. Ultraviolet B (UVB) irradiation was chosen as a tool to induce oxidative stress. Murine astrocytes were treated with 10 μg/ml and 25 μg/ml of CoQ10 for 24 h prior to UVB and maintained during UVB and 24 h post-UVB. Cell viability was evaluated by counting viable cells and MTT conversion assay. ROS production was measured using fluorescent probes. Levels of p-ERK 1/2, ERK 1/2, p-PKA, PKA were detected using immunocytochemistry and/or Western blotting. The results showed that UVB irradiation decreased the number of viable cells. This damaging effect was associated with accumulation of ROS and elevations of p-ERK 1/2 and p-PKA. Treatment with CoQ10 at 25 μg/ml significantly increased the number of viable cells and prevented the UVB-induced increases of ROS, p-ERK 1/2, and p-PKA. It is concluded that suppression of the PKA-ERK 1/2 signaling pathway may be one of the important mechanisms by which CoQ10 protects astrocytes from UVB-induced oxidative damage.
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18
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Zhang F, Zhang C. Rnf112 deletion protects brain against intracerebral hemorrhage (ICH) in mice by inhibiting TLR-4/NF-κB pathway. Biochem Biophys Res Commun 2018; 507:43-50. [PMID: 30454900 DOI: 10.1016/j.bbrc.2018.10.141] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 10/23/2018] [Indexed: 12/14/2022]
Abstract
Intracerebral hemorrhage (ICH) is reported as a common and often fatal type of stroke accompanied with high morbidity and mortality, and it frequently results in long-lasting neurological dysfunctions. However, the pathogenesis that contributes to ICH has not been fully understood. Rnf112, also known as Znf179, is a member of the RING finger protein family. The expression of Rnf112 is abundant in the brain and is modulated during brain progression and development. The study aimed to explore the role of Rnf112 in brain injury after ICH, as well as the underlying molecular mechanisms. The results indicated that ICH led to a significant decrease in Rnf112, which was confirmed in oxyhemoglobin (oxyHb)-incubated astrocytes and microglial cells. Moreover, the Rnf112 knockout (Rnf112-/-) mice and wild type (WT) mice induced by ICH were further employed. Compared to the WT/ICH group, Rnf112-/- mice exhibited accelerated brain injury, as evidenced by the increased brain water contents and neurological deficit scores (NDS). In comparison to WT/ICH group, a remarkable up-regulation in the release of pro-inflammatory cytokines, including tumor necrotic factor-α (TNF-α), interleukin-6 (IL-6), and IL-1β, was observed in perihematoma tissues of Rnf112-/- mice on day 3 post-ICH. The process was along with promoted glial fibrillary acidic protein (GFAP) and Iba1 expression and reduced NeuN levels. Furthermore, ICH-induced increases in toll-like receptor (TLR)-4 and myeloid differentiation primary response protein (MyD88) expression were exacerbated by the loss of Rnf112. The phosphorylated expression of IKKα, inhibitor of NF-κB (IκBα) and nuclear factor-kappa B (NF-κB) induced by ICH in perihematoma tissues of mice was markedly enhanced in Rnf112-/- mice. Rnf112 repression-induced inflammatory response was verified in lipopolysaccharide (LPS)-incubated glial cells. In contrast, over-expressing Rnf112 markedly attenuated ICH-induced brain injury by restraining inflammation via inactivating TLR-4/NF-κB pathway. In summary, our findings suggested that Rnf112 expression was highly involved in the progression of ICH, and targeting Rnf112 signaling might be a promising therapeutic strategy against ICH development.
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Affiliation(s)
- Fan Zhang
- Department of Internal Neurology, No.215 Hospital of Shaanxi Nuclear Industry, Xianyang 712000, China
| | - Chenhong Zhang
- Department of Internal Neurology, No.215 Hospital of Shaanxi Nuclear Industry, Xianyang 712000, China.
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19
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Zhu L, Li J, Wu D, Li B. The protective effect of beta-casomorphin-7 via promoting Foxo1 activity and nuclear translocation in human lens epithelial cells. Cutan Ocul Toxicol 2018; 37:267-274. [PMID: 29519181 DOI: 10.1080/15569527.2018.1445095] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 02/10/2018] [Accepted: 02/20/2018] [Indexed: 10/17/2022]
Abstract
PURPOSE To investigate the protective effect of beta-casomorphin-7 (β-CM-7) in oxidative stressed human lens epithelial cells (HLECs) and to explore the possible mechanism for oxidative stress in HLECs induced by high glucose. METHODS We used HLECs to determine the effect of different concentrations of β-CM-7 on cell viability by 3-(4, 5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2-H-tetrazolimol/L bromide (MTT) assay. We used flow cytometry to determine the content of reactive oxygen species (ROS) induced by oxidative stress and a bioassay kit to determine the oxidant malondialdehyde (MDA) and antioxidant enzyme superoxide dismutase (SOD) levels. We used Western blotting and an immunofluorescence assay to determine the expression of Forkhead box o1 (Foxo1), SP1, and the related protein glutathione peroxidase (GSH-px) at the molecular biology level as well as their intracellular localization. RESULTS The expression of Foxo1 and SP1 was weakly expressed when the glucose concentration was 40 mM/L, but was highly expressed when cells were pre-treated with an appropriate concentration of β-CM-7. After pre-treatment with β-CM-7, the cells treated with 40 mM/L glucose for 48 h showed Foxo1 was transferred to the nucleus, and the expression of SP1 was increased. The content of ROS and MDA in the HLECs that were pre-treated with β-CM-7 was lower than in those that was not pre-treated (p <0.05). Accordingly, SOD was elevated in the cells pre-treated with β-CM-7. The relative expression of GSH-px increased with increases of Foxo1 and SP1. CONCLUSION β-CM-7 protects HLECs from oxidative damage by upregulating the relative expression of Foxo1 and promoting Foxo1 nuclear translocation.
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Affiliation(s)
- Lihua Zhu
- a Department of Ophthalmology , Jinzhou Medical University , Jinzhou , People's Republic of China
| | - Jia Li
- b Department of Ophthalmology , The First Affiliated Hospital of Jinzhou Medical University , Jinzhou , People's Republic of China
| | - Dayang Wu
- b Department of Ophthalmology , The First Affiliated Hospital of Jinzhou Medical University , Jinzhou , People's Republic of China
| | - Bing Li
- b Department of Ophthalmology , The First Affiliated Hospital of Jinzhou Medical University , Jinzhou , People's Republic of China
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20
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Wu CC, Lee PT, Kao TJ, Chou SY, Su RY, Lee YC, Yeh SH, Liou JP, Hsu TI, Su TP, Chuang CK, Chang WC, Chuang JY. Upregulation of Znf179 acetylation by SAHA protects cells against oxidative stress. Redox Biol 2018; 19:74-80. [PMID: 30121389 PMCID: PMC6095945 DOI: 10.1016/j.redox.2018.08.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/01/2018] [Accepted: 08/03/2018] [Indexed: 12/14/2022] Open
Abstract
The accumulation of reactive oxygen species (ROS) commonly occurs during normal aging and during some acute/chronic progressive disorders. In order to avoid oxidative damage, scavenging of these radicals is important. Previously, we identified zinc finger protein 179 (Znf179) as a neuroprotector that increases antioxidant enzymes against superoxide radicals. However, the molecular mechanisms involved in the activation and regulation of Znf179 remain unresolved. Here, by performing sequence alignment, bioinformatics analysis, immunoprecipitation using two specific acetyl-lysine antibodies, and treatment with the histone deacetylase (HDAC) inhibitor SAHA, we determined the lysine-specific acetylation of Znf179. Furthermore, we investigated Znf179 interaction with HDACs and revealed that peroxide insult induced a dissociation of Znf179-HDAC1/HDAC6, causing an increase in Znf179 acetylation. Importantly, HDAC inhibition by SAHA further prompted Znf179 hyperacetylation, which promoted Znf179 to form a transcriptional complex with Sp1 and increased antioxidant gene expression against oxidative attack. In summary, the results obtained in this study showed that Znf179 was regulated by HDACs and that Znf179 acetylation was a critical mechanism in the induction of antioxidant defense systems. Additionally, HDAC inhibitors may have therapeutic potential for induction of Znf179 acetylation, strengthening the Znf179 protective functions against neurodegenerative processes.
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Affiliation(s)
- Chung-Che Wu
- Division of Neurosurgery, Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taiwan; Division of Neurosurgery, Department of Surgery, Taipei Medical University Hospital, Taiwan
| | - Pin-Tse Lee
- Cellular Pathobiology Section, Intramural Research Program, National Institute on Drug Abuse, USA
| | - Tzu-Jen Kao
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Szu-Yi Chou
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Ruei-Yuan Su
- Graduate Institute of Medical Science, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Yi-Chao Lee
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan
| | - Shiu-Hwa Yeh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Taiwan
| | | | - Tsung-I Hsu
- Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taiwan
| | - Tsung-Ping Su
- Cellular Pathobiology Section, Intramural Research Program, National Institute on Drug Abuse, USA
| | - Cheng-Keng Chuang
- Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, Chang Gung University, Taiwan
| | - Wen-Chang Chang
- Graduate Institute of Medical Science, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan.
| | - Jian-Ying Chuang
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, 250 Wuxing Street, Taipei 11031, Taiwan; School of Pharmacy, Taipei Medical University, Taiwan.
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21
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Dai Z, Zhang S, Yang Q, Zhang W, Qian X, Dong W, Jiang M, Xin F. Genetic tool development and systemic regulation in biosynthetic technology. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:152. [PMID: 29881457 PMCID: PMC5984347 DOI: 10.1186/s13068-018-1153-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Accepted: 05/23/2018] [Indexed: 05/17/2023]
Abstract
With the increased development in research, innovation, and policy interest in recent years, biosynthetic technology has developed rapidly, which combines engineering, electronics, computer science, mathematics, and other disciplines based on classical genetic engineering and metabolic engineering. It gives a wider perspective and a deeper level to perceive the nature of life via cell mechanism, regulatory networks, or biological evolution. Currently, synthetic biology has made great breakthrough in energy, chemical industry, and medicine industries, particularly in the programmable genetic control at multiple levels of regulation to perform designed goals. In this review, the most advanced and comprehensive developments achieved in biosynthetic technology were represented, including genetic engineering as well as synthetic genomics. In addition, the superiority together with the limitations of the current genome-editing tools were summarized.
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Affiliation(s)
- Zhongxue Dai
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800 People’s Republic of China
| | - Shangjie Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800 People’s Republic of China
| | - Qiao Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800 People’s Republic of China
| | - Wenming Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800 People’s Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800 People’s Republic of China
| | - Xiujuan Qian
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800 People’s Republic of China
| | - Weiliang Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800 People’s Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800 People’s Republic of China
| | - Min Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800 People’s Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800 People’s Republic of China
| | - Fengxue Xin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Puzhu South Road 30#, Nanjing, 211800 People’s Republic of China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, 211800 People’s Republic of China
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22
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Chang KY, Huang CT, Hsu TI, Hsu CC, Liu JJ, Chuang CK, Hung JJ, Chang WC, Tsai KK, Chuang JY. Stress stimuli induce cancer-stemness gene expression via Sp1 activation leading to therapeutic resistance in glioblastoma. Biochem Biophys Res Commun 2017; 493:14-19. [PMID: 28939040 DOI: 10.1016/j.bbrc.2017.09.095] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 09/17/2017] [Indexed: 01/06/2023]
Abstract
It has been suggested that stress stimuli from the microenvironment maintain a subset of tumor cells with stem-like properties, including drug resistance. Here, we investigate whether Sp1, a stress-responsive factor, regulates stemness gene expression and if its inhibition sensitizes cancer cells to chemotherapy. Hydrogen peroxide- and serum deprivation-induced stresses were performed in glioblastoma (GBM) cells and patient-derived cells, and the effect of the Sp1 inhibitor mithramycin A (MA) on these stress-induced stem cells and temozolomide (TMZ)-resistant cells was evaluated. Sp1 and stemness genes were not commonly overexpressed in clinical GBM samples. However, their expression was highly induced by stress stimuli. Using MA, we demonstrated Sp1 as a critical stemness-related transcriptional factor protecting GBM cells against stress- and TMZ-induced death. Thus, Sp1 inhibition may prevent recurrence of malignant cells persisting after primary therapy.
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Affiliation(s)
- Kwang-Yu Chang
- National Institute of Cancer Research, National Health Research Institutes, Taiwan; Department of Internal Medicine, National Cheng Kung University Hospital, Taiwan
| | - Chih-Ta Huang
- Department of Surgery, Taipei Cathay General Hospital, Taiwan
| | - Tsung-I Hsu
- Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taiwan
| | - Che-Chia Hsu
- Graduate Institute of Medical Science, Taipei Medical University, Taiwan; Department of Cancer Biology, Wake Forest School of Medicine, USA
| | - Jr-Jiun Liu
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taiwan
| | - Cheng-Keng Chuang
- Division of Urology, Department of Surgery, Chang Gung Memorial Hospital, Chang Gung University, Taiwan
| | - Jan-Jong Hung
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Taiwan
| | - Wen-Chang Chang
- Graduate Institute of Medical Science, Taipei Medical University, Taiwan
| | - Kelvin K Tsai
- National Institute of Cancer Research, National Health Research Institutes, Taiwan; Graduate Institute of Clinical Medicine, Taipei Medical University, Taiwan
| | - Jian-Ying Chuang
- Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taiwan; The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taiwan.
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23
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Chang KY, Hsu TI, Hsu CC, Tsai SY, Liu JJ, Chou SW, Liu MS, Liou JP, Ko CY, Chen KY, Hung JJ, Chang WC, Chuang CK, Kao TJ, Chuang JY. Specificity protein 1-modulated superoxide dismutase 2 enhances temozolomide resistance in glioblastoma, which is independent of O 6-methylguanine-DNA methyltransferase. Redox Biol 2017; 13:655-664. [PMID: 28822335 PMCID: PMC5561972 DOI: 10.1016/j.redox.2017.08.005] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 08/07/2017] [Indexed: 12/12/2022] Open
Abstract
Acquisition of temozolomide (TMZ) resistance is a major factor leading to the failure of glioblastoma (GBM) treatment. The exact mechanism by which GBM evades TMZ toxicity is not always related to the expression of the DNA repair enzyme O6-methylguanine-DNA methyltransferase (MGMT), and so remains unclear. In this study, TMZ-resistant variants derived from MGMT-negative GBM clinical samples and cell lines were studied, revealing there to be increased specificity protein 1 (Sp1) expression associated with reduced reactive oxygen species (ROS) accumulation following TMZ treatment. Analysis of gene expression databases along with cell studies identified the ROS scavenger superoxide dismutase 2 (SOD2) as being disease-related. SOD2 expression was also increased, and it was found to be co-expressed with Sp1 in TMZ-resistant cells. Investigation of the SOD2 promoter revealed Sp1 as a critical transcriptional activator that enhances SOD2 gene expression. Co-treatment with an Sp1 inhibitor restored the inhibitory effects of TMZ, and decreased SOD2 levels in TMZ-resistant cells. This treatment strategy restored susceptibility to TMZ in xenograft animals, leading to prolonged survival in an orthotopic model. Thus, our results suggest that Sp1 modulates ROS scavengers as a novel mechanism to increase cancer malignancy and resistance to chemotherapy. Inhibition of this pathway may represent a potential therapeutic target for restoring treatment susceptibility in GBM.
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Affiliation(s)
- Kwang-Yu Chang
- National Institute of Cancer Research, National Health Research Institutes, Taiwan; Department of Internal Medicine, National Cheng Kung University Hospital, Taiwan
| | - Tsung-I Hsu
- Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taiwan
| | - Che-Chia Hsu
- Graduate Institute of Medical Science, Taipei Medical University, Taiwan; Department of Cancer Biology, Wake Forest School of Medicine, USA
| | | | - Jr-Jiun Liu
- National Institute of Cancer Research, National Health Research Institutes, Taiwan; The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taiwan
| | - Shao-Wen Chou
- National Institute of Cancer Research, National Health Research Institutes, Taiwan
| | - Ming-Sheng Liu
- National Institute of Cancer Research, National Health Research Institutes, Taiwan
| | | | - Chiung-Yuan Ko
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taiwan
| | - Kai-Yun Chen
- The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taiwan
| | - Jan-Jong Hung
- Institute of Bioinformatics and Biosignal Transduction, National Cheng Kung University, Taiwan
| | - Wen-Chang Chang
- Graduate Institute of Medical Science, Taipei Medical University, Taiwan
| | - Cheng-Keng Chuang
- Department of Medicine, Chang Gung University, Taiwan; Department of Urology, Linkou Chang Gung Memorial Hospital, Taiwan
| | - Tzu-Jen Kao
- Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taiwan; The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taiwan.
| | - Jian-Ying Chuang
- Center for Neurotrauma and Neuroregeneration, Taipei Medical University, Taiwan; The Ph.D. Program for Neural Regenerative Medicine, Taipei Medical University, Taiwan.
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24
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Meng Y, Eirin A, Zhu XY, Tang H, Chanana P, Lerman A, Van Wijnen AJ, Lerman LO. The metabolic syndrome alters the miRNA signature of porcine adipose tissue-derived mesenchymal stem cells. Cytometry A 2017; 93:93-103. [PMID: 28678424 DOI: 10.1002/cyto.a.23165] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 05/24/2017] [Accepted: 06/15/2017] [Indexed: 01/08/2023]
Abstract
Autologous transplantation of mesenchymal stem cells (MSCs) is a viable option for the treatment of several diseases. Evidence indicates that MSCs release extracellular vesicles (EVs) and that EVs shuttle miRNAs to damaged parenchymal cells to activate an endogenous repair program. We hypothesize that comorbidities may interfere with the packaging of cargo in MSC-derived EVs. Therefore, we examined whether metabolic syndrome (MetS) modulates the miRNA content packed within MSC-derived EVs. MSCs were collected from swine abdominal adipose tissue after 16 weeks of lean or obese diet (n = 7 each). Next-generation RNA sequencing of miRNAs (miRNA-seq) was performed to identify miRNAs enriched in MSC-derived EVs and their predicted target genes. Functional pathway analysis of the top 50 target genes of the top 4 miRNAs enriched in each group was performed using gene ontology analysis. Lean- and MetS-EVs were enriched in, respectively, 14 and 8 distinct miRNAs. Target genes of miRNAs enriched in MetS-EVs were implicated in the development of MetS and its complications, including diabetes-related pathways, validated transcriptional targets of AP1 family members Fra1 and Fra2, Class A/1 (Rhodopsin-like receptors), and Peptide ligand-binding receptors. In contrast, miRNAs enriched in Lean EVs target primarily EphrinA-EPHA and the Rho family of GTPases. MetS alters the miRNA content of EVs derived from porcine adipose tissue MSCs. These alterations could impair the efficacy and limit the therapeutic use of autologous MSCs in subjects with MetS. Our findings may assist in developing adequate regenerative strategies to preserve the reparative potency of MSCs in individuals with MetS. © 2017 International Society for Advancement of Cytometry.
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Affiliation(s)
- Yu Meng
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota.,Department of Nephrology, the First Hospital Affiliated to Jinan University, Guangzhou, 510630, China
| | - Alfonso Eirin
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Xiang-Yang Zhu
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Hui Tang
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota
| | - Pritha Chanana
- Division of Health Sciences Research & Biomedical Statistics and Informatics, Mayo Clinic, Rochester, Minnesota
| | - Amir Lerman
- Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota
| | | | - Lilach O Lerman
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, Minnesota.,Division of Cardiovascular Diseases, Mayo Clinic, Rochester, Minnesota
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