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Guo M, Chen S, Lao J, Liang J, Chen H, Tong J, Huang Y, Jia D, Li Q. 3BDO Alleviates Seizures and Improves Cognitive Function by Regulating Autophagy in Pentylenetetrazol (PTZ)-Kindled Epileptic Mice Model. Neurochem Res 2022; 47:3777-3791. [PMID: 36243819 DOI: 10.1007/s11064-022-03778-8] [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: 08/08/2022] [Revised: 09/24/2022] [Accepted: 09/29/2022] [Indexed: 12/13/2022]
Abstract
3-benzyl-5-((2-nitrophenoxy) methyl)-dihydrofuran-2(3 H)-one (3BDO) is a mTOR agonist that inhibits autophagy. The main purpose of this study is to investigate the effects of 3BDO on seizure and cognitive function by autophagy regulation in pentylenetetrazol (PTZ)-kindled epileptic mice model. The PTZ-kindled epileptic mice model was used in study. The behavioral changes and electroencephalogram (EEG) of the mice in each group were observed. The cognitive functions were tested by Morris water maze test. The loss of hippocampal neurons was detected by hematoxylin-eosin (HE) staining and immunofluorescence analysis. Immunohistochemistry, western blot and q-PCR were employed to detect the expression of autophagy-related proteins and mTOR in the hippocampus and cortex. Less seizures, increased hippocampal neurons and reduced astrocytes of hippocampus were observed in the 3BDO-treated epileptic mice than in the PTZ-kindled epileptic mice. Morris water maze test results showed that 3BDO significantly improved the cognitive function of the PTZ-kindled epileptic mice. Western blot analyses and q-PCR revealed that 3BDO inhibited the expression of LC3, Beclin-1, Atg5, Atg7 and p-ULK1/ULK1, but increased that of p-mTOR/mTOR, p-P70S6K/P70S6K in the hippocampus and temporal lobe cortex of epileptic mice. Immunohistochemistry and immunofluorescence also showed 3BDO inhibited the LC3 expression and increased the mTOR expression in the hippocampus of epileptic mice. In addition, the autophagy activator EN6 reversed the decrease in the 3BDO-induced autophagy and aggravated the seizures and cognitive dysfunction in the epileptic mice. 3BDO regulates autophagy by activating the mTOR signaling pathway in PTZ-kindled epileptic mice model, thereby alleviating hippocampus neuronal loss and astrocytes proliferation, reducing seizures and effectively improving cognitive function. Therefore, 3BDO may have potential value in the treatment of epilepsy.
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Affiliation(s)
- Meiwen Guo
- Department of Neurology, the First Affiliated Hospital of Hainan Medical University, Haikou, China
- Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Shuang Chen
- Department of Neurology, the First Affiliated Hospital of Hainan Medical University, Haikou, China
- Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jitong Lao
- Department of Neurology, the First Affiliated Hospital of Hainan Medical University, Haikou, China
- The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jiantang Liang
- Department of Neurology, the First Affiliated Hospital of Hainan Medical University, Haikou, China
- Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Hao Chen
- Department of Neurology, the First Affiliated Hospital of Hainan Medical University, Haikou, China
- Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | - Jingyi Tong
- Department of Neurology, the First Affiliated Hospital of Hainan Medical University, Haikou, China
- Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China
| | | | - Dandan Jia
- Department of Neurology, the First Affiliated Hospital of Hainan Medical University, Haikou, China.
- Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China.
| | - Qifu Li
- Department of Neurology, the First Affiliated Hospital of Hainan Medical University, Haikou, China.
- Key Laboratory of Brain Science Research & Transformation in Tropical Environment of Hainan Province, Hainan Medical University, Haikou, China.
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Autophagy, Hyperlipidemia, and Atherosclerosis. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1207:237-264. [PMID: 32671753 DOI: 10.1007/978-981-15-4272-5_18] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Autophagy is an evolutionarily conserved process in eukaryotes that processes the turnover of intracellular substances. Atherosclerosis is a disease caused by multiple factors, it mainly occurs on the walls of large and medium blood vessels and atherosclerotic plaques form in the intima of the blood vessels. Hyperlipidemia is considered to be a very dangerous factor leading to cardiovascular and cerebrovascular diseases, especially atherosclerosis. This chapter mainly introduces the key role of autophagy in hyperlipidemia and atherosclerosis, that is, impaired lipophagy affects the degradation of triacylglycerol, cholesterol, etc., leading to hyperlipidemia in atherosclerosis. In patients, excessive levels of autophagy accelerate the rupture of atherosclerotic plaque. This chapter also describes the advances in the treatment of atherosclerosis and hyperlipidemia by targeted autophagy.
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Long Noncoding Competing Endogenous RNA Networks in Age-Associated Cardiovascular Diseases. Int J Mol Sci 2019; 20:ijms20123079. [PMID: 31238513 PMCID: PMC6627372 DOI: 10.3390/ijms20123079] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 06/17/2019] [Accepted: 06/21/2019] [Indexed: 12/24/2022] Open
Abstract
Cardiovascular diseases (CVDs) are the most serious health problem in the world, displaying high rates of morbidity and mortality. One of the main risk factors for CVDs is age. Indeed, several mechanisms are at play during aging, determining the functional decline of the cardiovascular system. Aging cells and tissues are characterized by diminished autophagy, causing the accumulation of damaged proteins and mitochondria, as well as by increased levels of oxidative stress, apoptosis, senescence and inflammation. These processes can induce a rapid deterioration of cellular quality-control systems. However, the molecular mechanisms of age-associated CVDs are only partially known, hampering the development of novel therapeutic strategies. Evidence has emerged indicating that noncoding RNAs (ncRNAs), such as long ncRNAs (lncRNAs) and micro RNAs (miRNAs), are implicated in most patho-physiological mechanisms. Specifically, lncRNAs can bind miRNAs and act as competing endogenous-RNAs (ceRNAs), therefore modulating the levels of the mRNAs targeted by the sponged miRNA. These complex lncRNA/miRNA/mRNA networks, by regulating autophagy, apoptosis, necrosis, senescence and inflammation, play a crucial role in the development of age-dependent CVDs. In this review, the emerging knowledge on lncRNA/miRNA/mRNA networks will be summarized and the way in which they influence age-related CVDs development will be discussed.
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Yao H, Feng J, Zheng Q, Wei Y, Wang S, Feng W. The effects of gliclazide, methylcobalamin, and gliclazide+methylcobalamin combination therapy on diabetic peripheral neuropathy in rats. Life Sci 2016; 161:60-8. [DOI: 10.1016/j.lfs.2016.07.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 07/18/2016] [Accepted: 07/30/2016] [Indexed: 11/25/2022]
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Chen XP, Fan CD, Su L, Zhao BX, Miao JY. A synthesized butyrolactone derivative in combination with chloroquine can inhibit cancer cell growth and lysosome vacuolation induced by chloroquine in A549 lung cancer cells. RSC Adv 2016. [DOI: 10.1039/c6ra02533a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
3BDO in combination with chloroquine could elevate the Na+,K+-ATPase activity and decrease the expression of competing endogenous non-coding RNA TGFB2-OT1. Therefore, the combination inhibited the cells growth and lysosomal vacuolation induced by CQ.
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Affiliation(s)
- Xin-Peng Chen
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100
- China
| | - Chuan-Dong Fan
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100
- China
| | - Le Su
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100
- China
| | - Bao-Xiang Zhao
- Institute of Organic Chemistry
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - Jun-Ying Miao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100
- China
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Ge D, Han L, Huang S, Peng N, Wang P, Jiang Z, Zhao J, Su L, Zhang S, Zhang Y, Kung H, Zhao B, Miao J. Identification of a novel MTOR activator and discovery of a competing endogenous RNA regulating autophagy in vascular endothelial cells. Autophagy 2015; 10:957-71. [PMID: 24879147 DOI: 10.4161/auto.28363] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
MTOR, a central regulator of autophagy, is involved in cancer and cardiovascular and neurological diseases. Modulating the MTOR signaling balance could be of great significance for numerous diseases. No chemical activators of MTOR have been found, and the urgent challenge is to find novel MTOR downstream components. In previous studies, we found a chemical small molecule, 3-benzyl-5-((2-nitrophenoxy) methyl)-dihydrofuran-2(3H)-one (3BDO), that inhibited autophagy in human umbilical vein endothelial cells (HUVECs) and neuronal cells. Here, we found that 3BDO activated MTOR by targeting FKBP1A (FK506-binding protein 1A, 12 kDa). We next used 3BDO to detect novel factors downstream of the MTOR signaling pathway. Activation of MTOR by 3BDO increased the phosphorylation of TIA1 (TIA1 cytotoxic granule-associated RNA binding protein/T-cell-restricted intracellular antigen-1). Finally, we used gene microarray, RNA interference, RNA-ChIP assay, bioinformatics, luciferase reporter assay, and other assays and found that 3BDO greatly decreased the level of a long noncoding RNA (lncRNA) derived from the 3' untranslated region (3'UTR) of TGFB2, known as FLJ11812. TIA1 was responsible for processing FLJ11812. Further experiments results showed that FLJ11812 could bind with MIR4459 targeting ATG13 (autophagy-related 13), and ATG13 protein level was decreased along with 3BDO-decreased FLJ11812 level. Here, we provide a new activator of MTOR, and our findings highlight the role of the lncRNA in autophagy.
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Affiliation(s)
- Di Ge
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan, China
| | - Lei Han
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan, China
| | - ShuYa Huang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan, China
| | - Nan Peng
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan, China
| | - PengChong Wang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan, China
| | - Zheng Jiang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan, China
| | - Jing Zhao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan, China
| | - Le Su
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan, China
| | - ShangLi Zhang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan, China
| | - Yun Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research; Chinese Ministry of Education and Chinese Ministry of Health; Shandong University Qilu Hospital; Jinan, China
| | - HsiangFu Kung
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan, China; Institute of Pathology and Southwest Cancer Center; Third Military Medical University; Chongqing, China
| | - BaoXiang Zhao
- Institute of Organic Chemistry; School of Chemistry and Chemical Engineering; Shandong University; Jinan, China
| | - JunYing Miao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology; School of Life Science; Shandong University; Jinan, China; The Key Laboratory of Cardiovascular Remodeling and Function Research; Chinese Ministry of Education and Chinese Ministry of Health; Shandong University Qilu Hospital; Jinan, China
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Pseudolaric acid B exerts antitumor activity via suppression of the Akt signaling pathway in HeLa cervical cancer cells. Mol Med Rep 2015; 12:2021-6. [DOI: 10.3892/mmr.2015.3615] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Accepted: 03/18/2015] [Indexed: 11/05/2022] Open
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Wen X, Zhou J, Zhang D, Li J, Wang Q, Feng N, Zhu H, Song Y, Li H, Bai C. Denatonium inhibits growth and induces apoptosis of airway epithelial cells through mitochondrial signaling pathways. Respir Res 2015; 16:13. [PMID: 25652218 PMCID: PMC4326484 DOI: 10.1186/s12931-015-0183-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Accepted: 01/27/2015] [Indexed: 01/11/2023] Open
Abstract
Background Denatonium, a widely used bitter agonist, activates bitter taste receptors on many cell types and plays important roles in chemical release, ciliary beating and smooth muscle relaxation through intracellular Ca2+-dependent pathways. However, the effects of denatonium on the proliferation of airway epithelial cells and on the integrity of cellular components such as mitochondria have not been studied. In this study, we hypothesize that denatonium might induce airway epithelial cell injury by damaging mitochondria. Methods Bright-field microscopy, cell counting kit-8 (CCK-8) assay and flow cytometry analysis were used to examine cellular morphology, proliferation and cell cycle, respectively. Transmission electron microscopy (TEM) was used to examine mitochondrial integrity. JC-1 dye and western blotting techniques were used to measure mitochondrial membrane potential and protein expression, respectively. Results For airway epithelial cells, we observed that denatonium significantly effects cellular morphology, decreases cell proliferation and reduces the number of cells in S phase in a dose-dependent manner. TEM analysis demonstrated that denatonium causes large amplitude swelling of mitochondria, which was confirmed by the loss of mitochondrial membrane potential, the down-regulation of Bcl-2 protein and the subsequent enhancement of the mitochondrial release of cytochrome c and Smac/DIABLO after denatonium treatment. Conclusions In this study, we demonstrated for the first time that denatonium damages mitochondria and thus induces apoptosis in airway epithelial cells. Electronic supplementary material The online version of this article (doi:10.1186/s12931-015-0183-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiaoxing Wen
- Department of Pulmonary Medicine, Research Institute of Respiratory Disease, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai, 200032, China.
| | - Jian Zhou
- Department of Pulmonary Medicine, Research Institute of Respiratory Disease, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai, 200032, China.
| | - Dan Zhang
- Department of Pulmonary Medicine, Research Institute of Respiratory Disease, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai, 200032, China.
| | - Jing Li
- Department of Pulmonary Medicine, Research Institute of Respiratory Disease, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai, 200032, China.
| | - Qin Wang
- Department of Pulmonary Medicine, Research Institute of Respiratory Disease, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai, 200032, China.
| | - Nana Feng
- Department of Pulmonary Medicine, Research Institute of Respiratory Disease, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai, 200032, China.
| | - Haixing Zhu
- Department of Pulmonary Medicine, Research Institute of Respiratory Disease, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai, 200032, China.
| | - Yuanlin Song
- Department of Pulmonary Medicine, Research Institute of Respiratory Disease, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai, 200032, China.
| | - Huayin Li
- Department of Pulmonary Medicine, Research Institute of Respiratory Disease, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai, 200032, China.
| | - Chunxue Bai
- Department of Pulmonary Medicine, Research Institute of Respiratory Disease, Zhongshan Hospital, Fudan University, No. 180 Fenglin Road, Shanghai, 200032, China.
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Lu W, Han L, Su L, Zhao J, Zhang Y, Zhang S, Zhao B, Miao J. A 3'UTR-associated RNA, FLJ11812 maintains stemness of human embryonic stem cells by targeting miR-4459. Stem Cells Dev 2015; 24:1133-40. [PMID: 25437332 DOI: 10.1089/scd.2014.0353] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The 3' untranslated region (UTR)-associated RNAs (uaRNAs) have important roles in various biological processes, especially in development. However, since they overlap with protein-coding mRNAs, uaRNAs are difficult to study by RNA interference techniques. We recently identified a chemical molecule, 3-benzyl-5-((2-nitrophenoxy) methyl)-dihydrofuran-2(3H)-one (3BDO), that could efficiently induce human embryonic stem cells (hESCs) differentiation, and meanwhile selectively and efficiently downregulate the uaRNA FLJ11812. By acting as a competing endogenous RNA, downregulated FLJ11812 by 3BDO further increased miR-4459 level in hESCs. miR-4459 could decrease the expression of its targets, CDC20B and ATG13, and thus altered stemness via cell cycle and autophagy. Our results revealed that FLJ11812 played a key role in maintenance of stemness of hESCs for the first time. The findings provide new clues and a powerful tool for investigating the action mechanism of FLJ11812 in early development.
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Affiliation(s)
- Wei Lu
- 1 Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University , Jinan, China
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Peng N, Meng N, Wang S, Zhao F, Zhao J, Su L, Zhang S, Zhang Y, Zhao B, Miao J. An activator of mTOR inhibits oxLDL-induced autophagy and apoptosis in vascular endothelial cells and restricts atherosclerosis in apolipoprotein E⁻/⁻ mice. Sci Rep 2014; 4:5519. [PMID: 24980430 PMCID: PMC4076681 DOI: 10.1038/srep05519] [Citation(s) in RCA: 127] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 06/13/2014] [Indexed: 12/28/2022] Open
Abstract
Oxidized low-density lipoprotein (oxLDL) inhibits mammalian target of rapamycin (mTOR) and induces autophagy and apoptosis in vascular endothelial cells (VECs) that play very critical roles for the cardiovascular homostasis. We recently defined 3-benzyl-5-((2-nitrophenoxy) methyl)-dihydrofuran-2(3H)-one (3BDO) as a new activator of mTOR. Therefore, we hypothesized that 3BDO had a protective role in VECs and thus stabilized atherosclerotic lesions in apolipoprotein E-/- (apoE-/-) mice. Our results showed that oxLDL inhibited the activity of mTOR and increased the protein level of autophagy-related 13 (ATG13) and its dephosphorylation, thus inducing autophagy in human umbilical vein endothelial cells (HUVECs). All of these effects were strongly inhibited by 3BDO. In vivo experiments confirmed that 3BDO activated mTOR and decreased the protein level of ATG13 in the plaque endothelium of apoE-/- mice. Importantly, 3BDO did not affect the activity of mTOR and autophagy in macrophage cell line RAW246.7 and vascular smooth muscle cells of apoE-/- mice, but suppressed plaque endothelial cell death and restricted atherosclerosis development in the mice. 3BDO protected VECs by activating mTOR and thus stabilized atherosclerotic lesions in apoE-/- mice.
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Affiliation(s)
- Nan Peng
- 1] Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan 250100, China [2]
| | - Ning Meng
- 1] School of Biological Science and Technology, University of Jinan, Jinan 250022, China [2] Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China [3]
| | - ShengQing Wang
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Fei Zhao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan 250100, China
| | - Jing Zhao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan 250100, China
| | - Le Su
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan 250100, China
| | - ShangLi Zhang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan 250100, China
| | - Yun Zhang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Shandong University Qilu Hospital, Jinan, 250012, China
| | - BaoXiang Zhao
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - JunYing Miao
- 1] Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan 250100, China [2] The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Shandong University Qilu Hospital, Jinan, 250012, China
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Li YY, Lam SK, Mak JCW, Zheng CY, Ho JCM. Erlotinib-induced autophagy in epidermal growth factor receptor mutated non-small cell lung cancer. Lung Cancer 2013; 81:354-361. [DOI: 10.1016/j.lungcan.2013.05.012] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 05/16/2013] [Accepted: 05/20/2013] [Indexed: 11/28/2022]
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Wang L, Dong Z, Zhang Y, Miao J. The roles of integrin β4 in Vascular Endothelial Cells. J Cell Physiol 2011; 227:474-8. [DOI: 10.1002/jcp.22769] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Meng N, Zhao J, Su L, Zhao B, Zhang Y, Zhang S, Miao J. A butyrolactone derivative suppressed lipopolysaccharide-induced autophagic injury through inhibiting the autoregulatory loop of p8 and p53 in vascular endothelial cells. Int J Biochem Cell Biol 2011; 44:311-9. [PMID: 22085531 DOI: 10.1016/j.biocel.2011.11.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Revised: 10/30/2011] [Accepted: 11/02/2011] [Indexed: 10/15/2022]
Abstract
Lipopolysaccharide (LPS)-induced vascular endothelial cell (VEC) dysfunction is an important contributing factor in vascular diseases. Recently, we found that LPS impaired VEC by inducing autophagy. Our previous researches showed that a butyrolactone derivative, 3-benzyl-5-((2-nitrophenoxy) methyl)-dihydrofuran-2(3H)-one (3BDO) selectively protected VEC function. The objective of the present study is to investigate whether and how 3BDO inhibits LPS-induced VEC autophagic injury. Our results showed that LPS induced autophagy and led to increase of reactive oxygen species (ROS) and decrease of mitochondrial membrane potential (MMP) in Human umbilical vein vascular endothelial cells (HUVECs). Furthermore, LPS significantly increased p8 and p53 protein levels and the nuclear translocation of p53. All of these effects of LPS on HUVECs were strongly inhibited by 3BDO. Importantly, the ROS scavenger N-acetylcysteine (NAC) could inhibited LPS-induced autophagy and knockdown of p8 by RNA interference inhibited the autophagy, p53 protein level increase, the translocation of p53 into nuclei and the ROS level increase induced by LPS in HUVECs. The data suggested that 3BDO inhibited LPS-induced autophagy in HUVECs through inhibiting the ROS overproduction, the increase of p8 and p53 expression and the nuclear translocation of p53. Our findings provide a potential tool for understanding the mechanism underlying LPS-induced autophagy in HUVECs and open the door to a novel therapeutic drug for LPS-induced vascular diseases.
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Affiliation(s)
- Ning Meng
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan 250100, China
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Discovery of a pyrazole derivative promoting angiogenesis through modulating reactive oxygen species and interferon-inducible protein 10 levels. Mol Biol Rep 2010; 38:1491-7. [DOI: 10.1007/s11033-010-0256-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2010] [Accepted: 09/02/2010] [Indexed: 01/01/2023]
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