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Wang Y, Li Y, Wu Y, Wu A, Xiao B, Liu X, Zhang Q, Feng Y, Yuan Z, Yi J, Wu J, Yang C. Endoplasmic reticulum stress promotes oxidative stress, inflammation, and apoptosis: A novel mechanism of citrinin-induced renal injury and dysfunction. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 284:116946. [PMID: 39208586 DOI: 10.1016/j.ecoenv.2024.116946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 08/13/2024] [Accepted: 08/23/2024] [Indexed: 09/04/2024]
Abstract
Citrinin (CTN) has been reported to induce renal failure and structural damage, but its nephrotoxic effects and mechanisms are not fully understood. Therefore, we established a model by orally administering CTN (0, 1.25, 5, or 20 mg/kg) to mice for 21 consecutive days. Histological and biochemical analyses revealed that CTN caused structural damage to renal tubules, increased inflammatory cell infiltration, and elevated levels of serum markers of renal function (creatinine, urea, and uric acid). Moreover, mRNA transcript levels of the inflammatory factors TNF-α, IL-1β, and IL-6 were increased, indicating the occurrence of an inflammatory response. Furthermore, exposure to CTN induced renal oxidative stress by decreasing antioxidant GSH levels, antioxidant enzyme (SOD, CAT) activities, and increasing oxidative products (ROS, MDA). In addition, CTN increased the expression of proteins associated with endoplasmic reticulum (ER)stress and apoptotic pathways. ER stress has been shown to be involved in regulating various models of kidney disease, but its role in CTN-induced renal injury has not been reported. We found that pretreatment with the ER stress inhibitor 4-PBA (240 mg/kg, ip) alleviated CTN-induced oxidative stress, NF-κB pathway mediated inflammatory response, and apoptosis. Interestingly, 4-PBA also partially alleviated renal structural damage and dysfunction. Thus, ER stress may be a novel target for the prevention and treatment of CTN-induced renal injury.
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Affiliation(s)
- Yongkang Wang
- Hunan Engineering Research Center of Livestock and Poultry Health Care, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China
| | - Yuanyuan Li
- Hunan Engineering Research Center of Livestock and Poultry Health Care, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China
| | - You Wu
- Hunan Engineering Research Center of Livestock and Poultry Health Care, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China
| | - Aoao Wu
- Hunan Engineering Research Center of Livestock and Poultry Health Care, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China
| | - Bo Xiao
- Hunan Engineering Research Center of Livestock and Poultry Health Care, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China
| | - Xiaofang Liu
- Hunan Engineering Research Center of Livestock and Poultry Health Care, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China
| | - Qike Zhang
- Hunan Engineering Research Center of Livestock and Poultry Health Care, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China
| | - Yiya Feng
- Hunan Engineering Research Center of Livestock and Poultry Health Care, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China
| | - Zhihang Yuan
- Hunan Engineering Research Center of Livestock and Poultry Health Care, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China; Institute of Yunnan Circular Agricultural Industry, Puer 665000, PR China
| | - Jine Yi
- Hunan Engineering Research Center of Livestock and Poultry Health Care, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China; Institute of Yunnan Circular Agricultural Industry, Puer 665000, PR China
| | - Jing Wu
- Hunan Engineering Research Center of Livestock and Poultry Health Care, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China; Institute of Yunnan Circular Agricultural Industry, Puer 665000, PR China.
| | - Chenglin Yang
- Hunan Engineering Research Center of Livestock and Poultry Health Care, College of Veterinary Medicine, Hunan Agricultural University, Changsha 410128, PR China; Institute of Yunnan Circular Agricultural Industry, Puer 665000, PR China.
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Kim DH. Endoplasmic reticulum stress induces hepatic steatosis through interaction between PPARα and FoxO6 in vivo and in vitro. J Mol Med (Berl) 2024; 102:1267-1284. [PMID: 39198274 PMCID: PMC11416408 DOI: 10.1007/s00109-024-02480-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 08/12/2024] [Accepted: 08/19/2024] [Indexed: 09/01/2024]
Abstract
Endoplasmic reticulum (ER) stress is a major cause of hepatic steatosis through increasing de novo lipogenesis. Forkhead box O6 (FoxO6) is a transcription factor mediating insulin signaling to glucose and lipid metabolism. Therefore, dysregulated FoxO6 is involved in hepatic lipogenesis. This study elucidated the role of FoxO6 in ER stress-induced hepatic steatosis in vivo and in vitro. Hepatic ER stress responses and β-oxidation were monitored in mice overexpressed with constitutively active FoxO6 allele and FoxO6-null mice. For the in vitro study, liver cells overexpressing constitutively active FoxO6 and FoxO6-siRNA were treated with high glucose, and lipid metabolism alterations were measured. ER stress-induced FoxO6 activation suppressed hepatic β-oxidation in vivo. The expression and transcriptional activity of peroxisome proliferator-activated receptor α (PPARα) were significantly decreased in the constitutively active FoxO6 allele. Otherwise, inhibiting β-oxidation genes were reduced in the FoxO6-siRNA and FoxO6-KO mice. Our data showed that the FoxO6-induced hepatic lipid accumulation was negatively regulated by insulin signaling. High glucose treatment as a hyperglycemia condition caused the expression of ER stress-inducible genes, which was deteriorated by FoxO6 activation in liver cells. However, high glucose-mediated ER stress suppressed β-oxidation gene expression through interactions between PPARα and FoxO6 corresponding to findings in the in vivo study-lipid catabolism is also regulated by FoxO6. Furthermore, insulin resistance suppressed b-oxidation through the interaction between FoxO6 and PPARα promotes hepatic steatosis, which, due to hyperglycemia-induced ER stress, impairs insulin signaling. KEY MESSAGES: Our original aims were to delineate the interrelation between the regulation of PPARα and the transcription factor FoxO6 pathway in relation to lipid metabolism at molecular levels. Evidence on high glucose promoted FoxO6 activation induced lipid accumulation in liver cells. The effect of PPARα activation of the insulin signaling. FoxO6 plays a pivotal role in hepatic lipid accumulation through inactivation of PPARα in FoxO6-overexpression mice.
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Affiliation(s)
- Dae Hyun Kim
- Department of Food Science & Technology, College of Natural Resources and Life Science, Pusan National University, Miryang-Si, Gyeongsangnam-Do, 50463, Republic of Korea.
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Noori H, Alazzeh ZJ, Rehman OU, Idrees M, Marsool MDM, Abdul Rehman K, Gohil KM, Ahmad SS, Subash T, Dixon K. Endoplasmic reticulum's role in multiple sclerosis, exploring potential biomarkers, and pioneering therapeutic strategies: a comprehensive review of literature. Neurol Sci 2024:10.1007/s10072-024-07766-4. [PMID: 39269572 DOI: 10.1007/s10072-024-07766-4] [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: 06/12/2024] [Accepted: 09/05/2024] [Indexed: 09/15/2024]
Abstract
BACKGROUD Multiple Sclerosis (MS) is a complex and chronic autoimmune disease that affects the central nervous system. Inflammation and demyelination characterize it, which results in a range of neurological impairments. The increasing worldwide occurrence of MS, affecting an estimated 2.8 million individuals in 2020, highlights the urgent requirement for further research to tackle the significant impact it has on individuals and healthcare systems globally. OBJECTIVE In this study, we wanted to explore the complex function of the endoplasmic reticulum (ER) in the origin, development, and resolution of MS, emphasizing its importance in neuroinflammatory illnesses. The ER has become a central focus in comprehending the pathogenesis of MS. Upon reviewing the literature, we observed a lack of thorough analysis that explores the involvement of endoplasmic reticulum stress in multiple sclerosis. Thus, we aimed through this research to examine the correlations between ER stress and its influence on immunological dysregulation, demyelination, and neurodegeneration in MS. FINDINGS Based on the latest clinical trials, we suggested theories that explore possible biomarkers linked to ER stress and the unfolded protein response. Identifying molecules that are suggestive of early stages of illness and can serve as prognostic tools for improving our understanding of the heterogeneity of MS and offering novel approaches for managing the disease. Finally, through our comprehensive search, we wanted to offer a plan for future research, suggesting new and creative methods for managing MS and encouraging the creation of specific treatments that aim to reduce the impact of MS on individuals worldwide.
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Affiliation(s)
- Hamid Noori
- Nuffield Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Level 6, West Wing, Oxford, OX3 9DU, UK
| | | | - Obaid Ur Rehman
- Department of Medicine, Services Institute of Medical Sciences, Lahore, Pakistan
| | | | | | - Khawaja Abdul Rehman
- Department of Medicine, CMH Lahore Medical College and Institute of Dentistry, Lahore, Pakistan.
| | - Krutika Mahendra Gohil
- Topiwala National Medical College & Bai Yamunabai Laxman Nair Charitable Hospital, Mumbai, India
| | | | | | - Kayla Dixon
- University of Birmingham Medical School, Birmingham, UK
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Çiftçi YC, Yurtsever Y, Akgül B. Long non-coding RNA-mediated modulation of endoplasmic reticulum stress under pathological conditions. J Cell Mol Med 2024; 28:e18561. [PMID: 39072992 DOI: 10.1111/jcmm.18561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Revised: 06/12/2024] [Accepted: 06/27/2024] [Indexed: 07/30/2024] Open
Abstract
Endoplasmic reticulum (ER) stress, which ensues from an overwhelming protein folding capacity, activates the unfolded protein response (UPR) in an effort to restore cellular homeostasis. As ER stress is associated with numerous diseases, it is highly important to delineate the molecular mechanisms governing the ER stress to gain insight into the disease pathology. Long non-coding RNAs, transcripts with a length of over 200 nucleotides that do not code for proteins, interact with proteins and nucleic acids, fine-tuning the UPR to restore ER homeostasis via various modes of actions. Dysregulation of specific lncRNAs is implicated in the progression of ER stress-related diseases, presenting these molecules as promising therapeutic targets. The comprehensive analysis underscores the importance of understanding the nuanced interplay between lncRNAs and ER stress for insights into disease mechanisms. Overall, this review consolidates current knowledge, identifies research gaps and offers a roadmap for future investigations into the multifaceted roles of lncRNAs in ER stress and associated diseases to shed light on their pivotal roles in the pathogenesis of related diseases.
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Affiliation(s)
- Yusuf Cem Çiftçi
- Noncoding RNA Laboratory, Department of Molecular Biology and Genetics, Izmir Institute of Technology, Izmir, Turkey
| | - Yiğit Yurtsever
- Noncoding RNA Laboratory, Department of Molecular Biology and Genetics, Izmir Institute of Technology, Izmir, Turkey
| | - Bünyamin Akgül
- Noncoding RNA Laboratory, Department of Molecular Biology and Genetics, Izmir Institute of Technology, Izmir, Turkey
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Lu J, Liu G, Sun W, Jia G, Zhao H, Chen X, Wang J. Dietary α-Ketoglutarate Alleviates Escherichia coli LPS-Induced Intestinal Barrier Injury by Modulating the Endoplasmic Reticulum-Mitochondrial System Pathway in Piglets. J Nutr 2024; 154:2087-2096. [PMID: 38453028 DOI: 10.1016/j.tjnut.2024.03.001] [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: 11/09/2023] [Revised: 02/20/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024] Open
Abstract
BACKGROUND α-Ketoglutarate (AKG) plays a pivotal role in mitigating inflammation and enhancing intestinal health. OBJECTIVES This study aimed to investigate whether AKG could protect against lipopolysaccharide (LPS)-induced intestinal injury by alleviating disorders in mitochondria-associated endoplasmic reticulum (MAM) membranes, dysfunctional mitochondrial dynamics, and endoplasmic reticulum (ER) stress in a piglet model. METHODS Twenty-four piglets were subjected to a 2 × 2 factorial design with dietary factors (basal diet or 1% AKG diet) and LPS treatment (LPS or saline). After 21 d of consuming either the basal diet or AKG diet, piglets received injections of LPS or saline. The experiment was divided into 4 treatment groups [control (CON) group: basal diet + saline; LPS group: basal diet +LPS; AKG group: AKG diet + saline; and AKG_LPS group: AKG + LPS], each consisting of 6 piglets. RESULTS The results demonstrated that compared with the CON group, AKG enhanced jejunal morphology, antioxidant capacity, and the messenger RNA and protein expression of tight junction proteins. Moreover, it has shown a reduction in serum diamine oxidase activity and D-lactic acid content in piglets. In addition, fewer disorders in the ER-mitochondrial system were reflected by AKG, as evidenced by AKG regulating the expression of key molecules of mitochondrial dynamics (mitochondrial calcium uniporter, optic atrophy 1, fission 1, and dynamin-related protein 1), ER stress [activating transcription factor (ATF) 4, ATF 6, CCAAT/enhancer binding protein homologous protein, eukaryotic initiation factor 2α, glucose-regulated protein (GRP) 78, and protein kinase R-like ER kinase], and MAM membranes [mitofusin (Mfn)-1, Mfn-2, GRP 75, and voltage-dependent anion channel-1]. CONCLUSIONS Dietary AKG can prevent mitochondrial dynamic dysfunction, ER stress, and MAM membrane disorder, ultimately alleviating LPS-induced intestinal damage in piglets.
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Affiliation(s)
- Jiajia Lu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Chengdu, Sichuan, China
| | - Guangmang Liu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Chengdu, Sichuan, China.
| | - Weixiao Sun
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Chengdu, Sichuan, China
| | - Gang Jia
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Chengdu, Sichuan, China
| | - Hua Zhao
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Chengdu, Sichuan, China
| | - Xiaoling Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Chengdu, Sichuan, China
| | - Jing Wang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China
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Lin X, Yang M, Huang Y, Huang X, Shi H, Chen B, Kang J, Ke S. Gene signatures of endoplasmic reticulum stress and mitophagy for prognostic risk prediction in lung adenocarcinoma. IET Syst Biol 2024; 18:103-117. [PMID: 38813617 PMCID: PMC11179159 DOI: 10.1049/syb2.12092] [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: 11/20/2023] [Revised: 03/18/2024] [Accepted: 05/08/2024] [Indexed: 05/31/2024] Open
Abstract
Genes associated with endoplasmic reticulum stress (ERS) and mitophagy can be conducive to predicting solid tumour prognosis. The authors aimed to develop a prognosis prediction model for these genes in lung adenocarcinoma (LUAD). Relevant gene expression and clinical information were collected from public databases including Gene Expression Omnibus (GEO) and The Cancer Genome Atlas (TCGA). A total of 265 differentially expressed genes was finally selected (71 up-regulated and 194 downregulated) in the LUAD dataset. Among these, 15 candidate ERS and mitophagy genes (ATG12, CSNK2A1, MAP1LC3A, MAP1LC3B, MFN2, PGAM5, PINK1, RPS27A, SQSTM1, SRC, UBA52, UBB, UBC, ULK1, and VDAC1) might be critical to LUAD based on the expression analysis after crossing with the ERS and mitochondrial autophagy genes. The prediction model demonstrated the ability to effectively predict the 5-, 3-, and 1-year prognoses of LUAD patients in both GEO and TCGA databases. Moreover, high VDAC1 expression was associated with poor overall survival in LUAD (p < 0.001), suggesting it might be a critical gene for LUAD prognosis prediction. Overall, the prognosis model based on ERS and mitophagy genes in LUAD can be useful for evaluating the prognosis of patients with LUAD, and VDAC1 may serve as a promising biomarker for LUAD prognosis.
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Affiliation(s)
- Xiong Lin
- Department of Thoracic Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Miaoling Yang
- Department of Thoracic Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Yuanling Huang
- The School of Clinical Medicine, Fujian Medical University, Fuzhou, China
| | - Xiaoli Huang
- Department of Thoracic Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Huibo Shi
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | | | - Jianle Kang
- Department of Thoracic Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
| | - Sunkui Ke
- Department of Thoracic Surgery, Zhongshan Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, China
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7
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Liu H, Meng H, Du M, Lv H, Wang Y, Zhang K. Chlorogenic acid ameliorates intestinal inflammation by inhibiting NF-κB and endoplasmic reticulum stress in lipopolysaccharide-challenged broilers. Poult Sci 2024; 103:103586. [PMID: 38442474 PMCID: PMC11067738 DOI: 10.1016/j.psj.2024.103586] [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: 09/09/2023] [Revised: 02/18/2024] [Accepted: 02/21/2024] [Indexed: 03/07/2024] Open
Abstract
Intestinal inflammation is a primary contributor to poor growth performance during poultry production. Chlorogenic acid (CGA) is a natural phenolic acid that exhibits superior anti-inflammatory activity and improved intestinal health. To investigate the protective effects and molecular mechanisms of CGA during intestinal inflammation in lipopolysaccharide (LPS)-challenged broilers, we randomly divided 288 one-day-old male Cobb broilers into 4 groups: a control group fed a basal diet (CON group), a basal diet + LPS group (LPS group), and 2 basal diet groups fed 500 or 750 mg/kg CGA + LPS (CGA_500 or CGA_750 groups). Broilers were injected with LPS or saline at 15, 17, 19, and 21 d old. Chlorogenic acid supplementation improved the growth performance of LPS-challenged broilers by increasing average daily gain (ADG) and reducing feed/gain (F/G) ratios (P < 0.05). CGA also improved intestinal barrier function in LPS-challenged boilers by enhancing jejunum morphology and integrity, decreasing intestinal permeability, and increasing occludin 3, zonula occludens-1, and mucin 2 expression (P < 0.05). CGA supplementation also improved systemic and jejunum antioxidant capacity by significantly enhancing glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), and catalase (CAT) activities (P < 0.05), and reducing malonaldehyde (MDA) and protein carbonyl (PCO) levels (P < 0.05). Chlorogenic acid supplementation reduced systemic and jejunum pro-inflammatory cytokines (interleukin (IL)-1β, IL-6, and IL-12) and increased anti-inflammatory cytokines (IL-10) in LPS-challenged broilers (P < 0.05) by inhibiting the toll like receptor 4 (TLR4)/nuclear factor kappa B (NF-κB) signaling pathway (P < 0.05). In addition, the protective effects of CGA toward intestinal inflammation and apoptosis appeared to be correlated with inhibited endoplasmic reticulum (ER) stress (P < 0.05). In summary, CGA supplementation improved intestinal morphology and integrity by inhibiting TLR4/NF-κB and ER stress pathways, which potentially reduced oxidative stress and inflammation, and ultimately improved the growth performance of LPS-challenged broilers.
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Affiliation(s)
- Huawei Liu
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Hongling Meng
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Mengmeng Du
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Huimin Lv
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Yang Wang
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China
| | - Kai Zhang
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China.
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8
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Khandayataray P, Samal D, Murthy MK. Arsenic and adipose tissue: an unexplored pathway for toxicity and metabolic dysfunction. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:8291-8311. [PMID: 38165541 DOI: 10.1007/s11356-023-31683-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
Arsenic-contaminated drinking water can induce various disorders by disrupting lipid and glucose metabolism in adipose tissue, leading to insulin resistance. It inhibits adipocyte development and exacerbates insulin resistance, though the precise impact on lipid synthesis and lipolysis remains unclear. This review aims to explore the processes and pathways involved in adipogenesis and lipolysis within adipose tissue concerning arsenic-induced diabetes. Although arsenic exposure is linked to type 2 diabetes, the specific role of adipose tissue in its pathogenesis remains uncertain. The review delves into arsenic's effects on adipose tissue and related signaling pathways, such as SIRT3-FOXO3a, Ras-MAP-AP-1, PI(3)-K-Akt, endoplasmic reticulum stress proteins, CHOP10, and GPCR pathways, emphasizing the role of adipokines. This analysis relies on existing literature, striving to offer a comprehensive understanding of different adipokine categories contributing to arsenic-induced diabetes. The findings reveal that arsenic detrimentally impacts white adipose tissue (WAT) by reducing adipogenesis and promoting lipolysis. Epidemiological studies have hinted at a potential link between arsenic exposure and obesity development, with limited research suggesting a connection to lipodystrophy. Further investigations are needed to elucidate the mechanistic association between arsenic exposure and impaired adipose tissue function, ultimately leading to insulin resistance.
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Affiliation(s)
- Pratima Khandayataray
- Department of Biotechnology, Academy of Management and Information Technology, Utkal University, Bhubaneswar, Odisha, 752057, India
| | - Dibyaranjan Samal
- Department of Biotechnology, Sri Satya Sai University of Technical and Medical Sciences, Sehore, Madhya Pradesh, 466001, India
| | - Meesala Krishna Murthy
- Department of Allied Health Sciences, Chitkara School of Health Sciences, Chitkara University, Punjab, 140401, India.
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Du H, Li J, Wei X, Yang D, Zhang B, Fan X, Zhao M, Zhu R, Zhang Z, Zhang Y, Li X, Gu N. Methylparaben induces hepatic glycolipid metabolism disorder by activating the IRE1α-XBP1 signaling pathway in male mice. ENVIRONMENT INTERNATIONAL 2024; 184:108445. [PMID: 38262168 DOI: 10.1016/j.envint.2024.108445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/17/2023] [Accepted: 01/15/2024] [Indexed: 01/25/2024]
Abstract
Methylparaben (MP), a preservative widely used in daily supplies, exists in both the environment and the human body. However, the potential health risks posed by MP remain unclear. This study aimed to unravel the mechanisms by which MP disrupts glucose and lipid homeostasis. For this, we administered MP to mice and observed changes in glucose and lipid metabolism. MP exposure led to hyperglycemia, hyperlipidemia, visceral organ injury, and hepatic lipid accumulation. RNA sequencing results from mice livers indicated a close association between MP exposure and endoplasmic reticulum (ER) stress, inflammatory response, and glucose and lipid homeostasis. Western blotting and quantitative reverse transcription-polymerase chain reaction revealed that MP activated ER stress, particularly the inositol-requiring enzyme 1 (IRE1)/X-box binding protein 1 (XBP1) pathway, which further promoted the activation of the nuclear factor-kappa B (NF-κB) and mitogen-activated protein kinase (MAPK) pathways. The activation of these pathways phosphorylated insulin receptor substrate-1 (IRS1) (ser 307), resulting in decreased phosphorylation of protein kinase B (Akt) (ser 473), leading to insulin resistance. Additionally, MP exposure promoted lipogenesis through ER stress. To explore potential remedies, we administered the ER stress inhibitor 4-phenylbutyric acid (4-PBA) and the IRE1α-XBP1 pathway inhibitor toyocamycin to mice, both of which protected against metabolic disorders and organ injury caused by MP. These findings suggest that MP induces disruptions in glucose and lipid metabolism through ER stress, primarily through the IRE1α-XBP1 pathway.
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Affiliation(s)
- Haining Du
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Jiaxin Li
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Xiangjuan Wei
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Daqian Yang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Boya Zhang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Xingpei Fan
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Meimei Zhao
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Ruijiao Zhu
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Ziyi Zhang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Yuxia Zhang
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Xiaoyan Li
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China
| | - Ning Gu
- School of Life Science and Technology, Harbin Institute of Technology, Harbin 150001, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150006, China.
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10
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Borek-Dorosz A, Pieczara A, Orleanska J, Brzozowski K, Tipping W, Graham D, Bik E, Kubrak A, Baranska M, Majzner K. Raman microscopy reveals how cell inflammation activates glucose and lipid metabolism. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119575. [PMID: 37689141 DOI: 10.1016/j.bbamcr.2023.119575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 08/11/2023] [Accepted: 08/30/2023] [Indexed: 09/11/2023]
Abstract
Metabolism of endothelial cells (ECs) depends on the availability of the energy substrates. Since the endothelium is the first line of defence against inflammation in the cardiovascular system and its dysfunction can lead to the development of cardiovascular diseases, it is important to understand how glucose metabolism changes during inflammation. In this work, glucose uptake was studied in human microvascular endothelial cells (HMEC-1) in high glucose (HG), and additionally in an inflammatory state, using Raman imaging. HG state was induced by incubation of ECs with a deuterated glucose analogue, while the EC inflammation was caused by TNF-α pre-treatment. Spontaneous and stimulated Raman scattering spectroscopy provided comprehensive information on biochemical changes, including lipids and the extent of unsaturation induced by excess glucose in ECs., induced by excess glucose in ECs. In this work, we indicated spectroscopic markers of metabolic changes in ECs as a strong increase in the ratio of the intensity of lipids / (proteins + lipids) bands and an increase in the level of lipid unsaturation and mitochondrial changes. Inflamed ECs treated with HG, revealed enhanced glucose uptake, and intensified lipid production i.a. of unsaturated lipids. Additionally, increased cytochrome c signal in the mitochondrial region indicated higher mitochondrial activity and biogenesis. Raman spectroscopy is a powerful method for determining the metabolic markers of ED which will better inform understanding of disease onset, development, and treatment.
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Affiliation(s)
- Aleksandra Borek-Dorosz
- Jagiellonian University in Kraków, Faculty of Chemistry, Department of Chemical Physics, 2 Gronostajowa Str., Krakow, Poland
| | - Anna Pieczara
- Jagiellonian University in Kraków, Jagiellonian Centre for Experimental Therapeutics (JCET), 14 Bobrzynskiego Str., Krakow, Poland; Jagiellonian University in Kraków, Doctoral School of Exact and Natural Sciences, 11 Lojasiewicza St., Krakow, Poland
| | - Jagoda Orleanska
- Jagiellonian University in Kraków, Faculty of Chemistry, Department of Chemical Physics, 2 Gronostajowa Str., Krakow, Poland; Jagiellonian University in Kraków, Doctoral School of Exact and Natural Sciences, 11 Lojasiewicza St., Krakow, Poland
| | - Krzysztof Brzozowski
- Jagiellonian University in Kraków, Faculty of Chemistry, Department of Chemical Physics, 2 Gronostajowa Str., Krakow, Poland
| | - William Tipping
- Centre for Molecular Nanometrology, WestCHEM, Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, Glasgow G1 1RD, United Kingdom
| | - Duncan Graham
- Centre for Molecular Nanometrology, WestCHEM, Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, Glasgow G1 1RD, United Kingdom
| | - Ewelina Bik
- Jagiellonian University in Kraków, Jagiellonian Centre for Experimental Therapeutics (JCET), 14 Bobrzynskiego Str., Krakow, Poland; Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, 30 Mickiewicza Str., Krakow, Poland
| | - Adam Kubrak
- Jagiellonian University in Kraków, Faculty of Chemistry, Department of Chemical Physics, 2 Gronostajowa Str., Krakow, Poland
| | - Malgorzata Baranska
- Jagiellonian University in Kraków, Faculty of Chemistry, Department of Chemical Physics, 2 Gronostajowa Str., Krakow, Poland; Jagiellonian University in Kraków, Jagiellonian Centre for Experimental Therapeutics (JCET), 14 Bobrzynskiego Str., Krakow, Poland
| | - Katarzyna Majzner
- Jagiellonian University in Kraków, Faculty of Chemistry, Department of Chemical Physics, 2 Gronostajowa Str., Krakow, Poland.
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11
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Xiang Y, Wang H, Ding H, Xu T, Liu X, Huang Z, Wu H, Ge H. Hyperandrogenism drives ovarian inflammation and pyroptosis: A possible pathogenesis of PCOS follicular dysplasia. Int Immunopharmacol 2023; 125:111141. [PMID: 37918087 DOI: 10.1016/j.intimp.2023.111141] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 10/11/2023] [Accepted: 10/25/2023] [Indexed: 11/04/2023]
Abstract
Hyperandrogenemia and persistent chronic inflammation, two main striking features of polycystic ovary syndrome (PCOS), have been proven involved in follicular dysgenesis in PCOS. However, the association between hyperandrogenism and inflammation activation in PCOS is not fully understood. Excess testosterone(T) induces inflammation and pyroptosis activation in a mouse model of PCOS, leading to ovarian dysfunction and fibrosis. Excessive endoplasmic reticulum (ER) stress is present in ovarian granulosa cells (GCs), testosterone-induced PCOS mouse and cellular models. This study found higher levels of interleukin (IL)-1β, IL-8, IL-17, and IL-18 in the follicular fluid of PCOS patients with hyperandrogenemia undergoing IVF treatment. In addition, pyroptosis in GCs was demonstrated, which was significantly elevated in PCOS patients. To clarify the association of hyperandrogenism, inflammation, and pyroptosis activation in PCOS, dehydroepiandrosterone(DHEA)-treated mouse PCOS model and T-treated KGN cell line were explored for PCOS mechanism. Markers of inflammatory activation and pyroptosis were significantly increased after DHEA treatment in mice and T treatment in KGN cells. In addition, ER stress sensor proteins were increased simultaneously. However, suppression of inflammation by genipin(GP) led to decreased pyroptosis in KGN cells but no variation in ER stress sensor proteins. In contrast, when treated with tauroursodeoxycholic acid(TUDCA) to attenuate ER stress, the markers of inflammatory factors were significantly reduced, accompanied by a reduction in pyroptosis. Our results suggest that persistent hyperandrogenemia of PCOS promotes local inflammatory activation of the ovary, and the imbalanced inflammatory microenvironment leads to pyroptosis of GCs, which is mediated by ER stress activation.
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Affiliation(s)
- Yu Xiang
- Reproduction Medicine Centre, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, China; Graduate School, Nanjing University Of Chinese Medicine, Nanjing, China
| | - Hua Wang
- Reproduction Medicine Centre, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, China; Third Clinical Medical College, Nanjing University Of Chinese Medicine, Nanjing, China
| | - Huimin Ding
- Reproduction Medicine Centre, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, China; Graduate School, Nanjing University Of Chinese Medicine, Nanjing, China
| | - Tianyue Xu
- Reproduction Medicine Centre, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, China; Graduate School, Nanjing University Of Chinese Medicine, Nanjing, China
| | - Xiu Liu
- Reproduction Medicine Centre, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, China; Graduate School, Dalian Medical University, Liaoning, China
| | - Zichao Huang
- Reproduction Medicine Centre, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, China; Graduate School, Nanjing University Of Chinese Medicine, Nanjing, China
| | - Honghui Wu
- Reproduction Medicine Centre, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, China; Graduate School, Dalian Medical University, Liaoning, China
| | - Hongshan Ge
- Reproduction Medicine Centre, The Affiliated Taizhou People's Hospital of Nanjing Medical University, Taizhou, China; Graduate School, Nanjing University Of Chinese Medicine, Nanjing, China; Graduate School, Dalian Medical University, Liaoning, China.
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12
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Chen Y, Wu X, Li P, Liu Y, Song M, Li F, Ou J, Lai J. Integrated metabolomic and transcriptomic responses to heat stress in a high-altitude fish, Triplophysa siluroides. FISH & SHELLFISH IMMUNOLOGY 2023; 142:109118. [PMID: 37774901 DOI: 10.1016/j.fsi.2023.109118] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/07/2023] [Accepted: 09/27/2023] [Indexed: 10/01/2023]
Abstract
Species in Triplophysa display strong adaptability to the extreme environment of the plateau, thus offering an ideal model to study the molecular mechanism of fish adaptation to environmental stress. In the present study, we conducted integrated analysis of the transcriptome and metabolism of liver tissue in Triplophysa siluroides under heat stress (28 °C) and control (10 °C) conditions to identify heat stress-induced genes, metabolites and pathways. RNA-Seq identified 2373 differentially expressed genes, which consisted of 1360 upregulated genes and 1013 downregulated genes, in the heat stress group vs. the control group. Genes in the heat shock protein (Hsp) family, including Hsp40, Hsp70, Hsp90 and other Hsps, were strongly upregulated by heat stress. Pathway enrichment analysis revealed that the PI3K/AKT/mTOR and protein processing in the endoplasmic reticulum (ER) pathways were significantly affected by heat stress. Metabolism sequencing identified a total of 155 differentially abundant metabolites, including 118 significantly upregulated metabolites and 37 downregulated metabolites. Combined analysis of the transcriptome and metabolism results showed that ubiquitin-dependent proteolysis and purine metabolism pathways were enhanced in response to acute heat stress to protect cells from damage under stress conditions. The results of this study may contribute to our understanding of the underlying molecular mechanism of the heat stress response in cold-water fish.
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Affiliation(s)
- Yeyu Chen
- The Fishery Institute of the Sichuan Academy of Agricultural Sciences, Chengdu, 611730, China
| | - Xiaoyun Wu
- The Fishery Institute of the Sichuan Academy of Agricultural Sciences, Chengdu, 611730, China
| | - Pengcheng Li
- The Fishery Institute of the Sichuan Academy of Agricultural Sciences, Chengdu, 611730, China
| | - Ya Liu
- The Fishery Institute of the Sichuan Academy of Agricultural Sciences, Chengdu, 611730, China
| | - Mingjiang Song
- The Fishery Institute of the Sichuan Academy of Agricultural Sciences, Chengdu, 611730, China
| | - Feiyang Li
- The Fishery Institute of the Sichuan Academy of Agricultural Sciences, Chengdu, 611730, China
| | - Jun Ou
- The Fishery Institute of the Sichuan Academy of Agricultural Sciences, Chengdu, 611730, China
| | - Jiansheng Lai
- The Fishery Institute of the Sichuan Academy of Agricultural Sciences, Chengdu, 611730, China.
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Nagar P, Sharma P, Dhapola R, Kumari S, Medhi B, HariKrishnaReddy D. Endoplasmic reticulum stress in Alzheimer's disease: Molecular mechanisms and therapeutic prospects. Life Sci 2023; 330:121983. [PMID: 37524162 DOI: 10.1016/j.lfs.2023.121983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 07/22/2023] [Accepted: 07/25/2023] [Indexed: 08/02/2023]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative condition that leads to memory loss and cognitive impairment over time. It is characterized by protein misfolding as well as prolonged cellular stress, such as perturbing calcium homeostasis and redox management. Numerous investigations have proven that endoplasmic reticulum failure may exhibit exacerbation of AD pathogenesis in AD patients, in-vivo and in-vitro models. The endoplasmic reticulum (ER) participates in a variety of biological functions including folding of protein, quality control, cholesterol production, and maintenance of calcium balance. A diverse range of physiological, pathological and pharmacological substances can interfere with ER activity and thus lead to exaggeration of ER stress. The unfolded protein response (UPR), an intracellular signaling network is stimulated due to ER stress. Three stress sensors found in the endoplasmic reticulum, the PERK, ATF6, and IRE1 transducers detect protein misfolding in the ER and trigger UPR, a complex system to maintain homeostasis. ER stress is linked to many of the major pathological processes that are seen in AD, including presenilin1 and 2 (PS1 and PS2) gene mutation, tau phosphorylation and β-amyloid formation. The role of ER stress and UPR in the pathophysiology of AD implies that they can be employed as potent therapeutic target. This study shows the relationship between ER and AD and how the pathogenesis of AD is influenced by the impact of ER stress. An effective method for the prevention or treatment of AD may involve therapeutic strategies that modify ER stress pathways.
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Affiliation(s)
- Pushank Nagar
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda 151401, Punjab, India
| | - Prajjwal Sharma
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda 151401, Punjab, India
| | - Rishika Dhapola
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda 151401, Punjab, India
| | - Sneha Kumari
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda 151401, Punjab, India
| | - Bikash Medhi
- Department of Pharmacology, Post Graduate Institute of Medical Education and Research, Chandigarh 160012, India
| | - Dibbanti HariKrishnaReddy
- Department of Pharmacology, School of Health Sciences, Central University of Punjab, Ghudda, Bathinda 151401, Punjab, India.
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Yang Y, Yu J, Huo J, Yan Y. Sesamin Attenuates Obesity-Associated Nonalcoholic Steatohepatitis in High-Fat and High-Fructose Diet-Fed Mice. J Med Food 2023; 26:176-184. [PMID: 36637806 DOI: 10.1089/jmf.2022.k.0091] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
This study explored the effects of sesamin on nonalcoholic steatohepatitis (NASH). High-fat and high-fructose diet-fed mice supplemented with or without sesamin. The results suggested that sesamin-treated mice lost body weight and fat tissue weight, had lower levels of serum metabolic parameters, and insulin resistance was mitigated. Histological examinations showed that sesamin treatment mitigated the progression of hepatic steatosis, and inflammation. In addition, sesamin enhanced hepatic antioxidant capacity, and decreased the activations of hepatic c-jun N-terminal kinase, inhibitor of kappa B kinase α, and insulin receptor substrate 1 as well as hepatic interleukin-6 and tumor necrosis factor-alpha levels. Further experiments indicated that sesamin treatment downregulated GRP78 and phospho-inositol-requiring enzyme 1 (IRE1) expression, and upregulated x-box binding protein 1 (XBP1) expression in hepatic tissue. The aforementioned results suggest that sesamin alleviates obesity-associated NASH, which might be linked to the effect of sesamin on the regulation of the hepatic endoplasmic reticulum stress-IRE1/XBP1 pathway. Thus, sesamin may be a good food functional ingredient in the treatment of obesity-associated NASH.
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Affiliation(s)
- Yang Yang
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Jing Yu
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Jiayao Huo
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi'an, China
| | - Yaping Yan
- Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi'an, China
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Ma J, Liu Y, Valladolid-Acebes I, Recio-López P, Peng G, Li J, Berggren PO, Juntti-Berggren L, Tong N. ATF5 is a regulator of ER stress and β-cell apoptosis in different mouse models of genetic- and diet-induced obesity and diabetes mellitus. Cell Signal 2023; 102:110535. [PMID: 36436799 DOI: 10.1016/j.cellsig.2022.110535] [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: 09/02/2022] [Revised: 11/09/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022]
Abstract
Endoplasmic reticulum (ER) stress is closely associated with type 2 diabetes (T2D). Activating transcription factor 5 (ATF5) is a member of the ATF/cAMP response element binding protein (CREB) family whose levels are increased upon stress in pancreatic islets from mice. Intriguingly, ATF5 deficiency has been shown to contribute to increased ER stress and apoptosis in mouse islet micro-organs. We hypothesized that either deficiency or overexpression of ATF5 is equally deleterious for pancreatic islets in terms of ER stress and apoptosis. To test this, we used a number of in vitro and in vivo models whereby ATF5 levels were overexpressed. We also determined the regulation of ATF5 in the context of metabolic derangements by using various mouse models of obesity and T2D. Our in vitro results show that ATF5 overexpression promoted palmitic acid (PA)-induced lipotoxic apoptosis. In vivo, global ATF5 overexpression in mice was lethal and pancreas-specific ATF5 overexpressing mice exhibit increased β-cell apoptosis. Interestingly, ATF5 is downregulated in all mouse models of severe obesity and T2D used in the current study. In conclusion, a tight control on ATF5 levels might be considered when developing novel agents targeting ATF5 for prevention and treatment of metabolic diseases.
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Affiliation(s)
- Jinfang Ma
- Department of Endocrinology and metabolism, West China Hospital, Sichuan University, Chengdu, China; Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Yuqi Liu
- Department of Endocrinology and metabolism, West China Hospital, Sichuan University, Chengdu, China; Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Ismael Valladolid-Acebes
- The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Karolinska University Hospital L1, SE-171 76 Stockholm, Sweden.
| | - Patricia Recio-López
- The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Karolinska University Hospital L1, SE-171 76 Stockholm, Sweden.
| | - Ge Peng
- Department of Endocrinology and metabolism, West China Hospital, Sichuan University, Chengdu, China; Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Juan Li
- Department of Endocrinology and metabolism, West China Hospital, Sichuan University, Chengdu, China; Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Per-Olof Berggren
- Department of Endocrinology and metabolism, West China Hospital, Sichuan University, Chengdu, China; Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China; The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Karolinska University Hospital L1, SE-171 76 Stockholm, Sweden.
| | - Lisa Juntti-Berggren
- The Rolf Luft Research Center for Diabetes and Endocrinology, Karolinska Institutet, Karolinska University Hospital L1, SE-171 76 Stockholm, Sweden.
| | - Nanwei Tong
- Department of Endocrinology and metabolism, West China Hospital, Sichuan University, Chengdu, China; Laboratory of Diabetes and Islet Transplantation Research, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China.
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16
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Jia TT, Zhang Y, Hou JT, Niu H, Wang S. H 2S-based fluorescent imaging for pathophysiological processes. Front Chem 2023; 11:1126309. [PMID: 36778034 PMCID: PMC9911449 DOI: 10.3389/fchem.2023.1126309] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 01/16/2023] [Indexed: 01/28/2023] Open
Abstract
Hydrogen sulfide (H2S), as an important endogenous signaling molecule, plays a vital role in many physiological processes. The abnormal behaviors of hydrogen sulfide in organisms may lead to various pathophysiological processes. Monitoring the changes in hydrogen sulfide is helpful for pre-warning and treating these pathophysiological processes. Fluorescence imaging techniques can be used to observe changes in the concentration of analytes in organisms in real-time. Therefore, employing fluorescent probes imaging to investigate the behaviors of hydrogen sulfide in pathophysiological processes is vital. This paper reviews the design strategy and sensing mechanisms of hydrogen sulfide-based fluorescent probes, focusing on imaging applications in various pathophysiological processes, including neurodegenerative diseases, inflammation, apoptosis, oxidative stress, organ injury, and diabetes. This review not only demonstrates the specific value of hydrogen sulfide fluorescent probes in preclinical studies but also illuminates the potential application in clinical diagnostics.
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Affiliation(s)
- Tong-Tong Jia
- College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang, China
| | - Yuanyuan Zhang
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, China
| | - Ji-Ting Hou
- National Engineering Research Center of Ophthalmology and Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Huawei Niu
- College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, China
| | - Shan Wang
- Key Laboratory of Intelligent Treatment and Life Support for Critical Diseases of Zhejiang Province, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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17
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Yuan Y, Li N, Fu M, Ye M. Identification of Critical Modules and Biomarkers of Ulcerative Colitis by Using WGCNA. J Inflamm Res 2023; 16:1611-1628. [PMID: 37092131 PMCID: PMC10120594 DOI: 10.2147/jir.s402715] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 03/28/2023] [Indexed: 04/25/2023] Open
Abstract
Background Ulcerative colitis (UC) is a chronic inflammatory disease of the colon and rectum that has no exact cause and is characterized by relapsing and remitting episodes. We aimed to find biomarkers of UC and its causes. Methods We got GSE73661 from the GEO database and used WGCNA to find DEGs that were expressed in the same way in both normal and UC samples. To identify the co-expression modules, we used Weighted Gene Co-Expression Network Analysis. Next, we selected genes that were both DEGs and parts of main modules. Later, three datasets were used to find the hub genes, and qRT-PCR was utilized to confirm the in-silico findings. Additionally, we analyzed the connection between the hub genes and the filtration of immune cells in UC. Using the databases, we made predictions about the miRNAs and lncRNAs that regulate the hub genes and predicted possible therapeutic drugs. Results We found 822 DEGs and three main modules related to immunity, endoplasmic reticulum, and metabolism. Using another three datasets and human samples to confirm the mRNA expression of these genes in UC patients, XBP1 and PLPP1 were selected as hub genes, and had excellent diagnostic potential. According to the findings of the immune infiltration, patients with UC exhibited a larger proportion of immune cells. And hub genes, particularly XBP1, were closely linked to a number of immune cell infiltrations. Based on the databases and hub genes, a lncRNA-miRNA-mRNA network, including two miRNAs (miR-214-3p and miR-93-5p), two hub genes, and 124 lncRNAs, and potential therapeutic medicine were identified. Conclusion We found two new genes, XBP1 and PLPP1, that are involved in UC and can help diagnose and measure the disease. XBP1 also relates to clinical scores and immune cells. We suggested a gene network and possible drugs based on them.
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Affiliation(s)
- Yifan Yuan
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, 430071, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, 430071, China
| | - Na Li
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, 430071, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, 430071, China
| | - Mingyue Fu
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, 430071, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, 430071, China
| | - Mei Ye
- Department of Gastroenterology, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, 430071, China
- Hubei Clinical Centre and Key Laboratory of Intestinal and Colorectal Diseases, Zhongnan Hospital, Wuhan University, Wuhan, Hubei, 430071, China
- Correspondence: Mei Ye, Email
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Yuan FY, Ju C, Zang CX, Liu H, Shang MY, Ning JW, Yang Y, Ma JW, Li G, Yu Y, Yao XS, Bao XQ, Zhang D. Gardenia jasminoides Extract GJ-4 Alleviates Memory Deficiency of Vascular Dementia in Rats through PERK-Mediated Endoplasmic Reticulum Stress Pathway. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2022; 51:53-72. [PMID: 36458485 DOI: 10.1142/s0192415x23500040] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
Endoplasmic reticulum stress (ERS) is involved in the pathological process of vascular dementia (VD). GJ-4 is extracted from Gardenia jasminoides J. Ellis and has been reported to have protective roles in ischemia-related brain damage. However, the role of GJ-4 in ERS has not been elucidated. We established a VD rat model through bilateral common carotid arteries occlusion (2-VO). The rats were intragastrically administrated with GJ-4 (10, 25, and 50[Formula: see text]mg/kg) and nimodipine (10[Formula: see text]mg/kg). Data from a Morris water maze test showed that GJ-4 could significantly alleviate learning and memory deficits in VD rats. Nissl and cleaved caspase-3 staining revealed that GJ-4 can inhibit apoptosis and thus exert a protective role in the brain of 2-VO rats. Western blot results suggested that GJ-4 significantly reduced ERS-related protein expression and inhibited apoptosis through suppression of the PERK/eIF2[Formula: see text]/ATF4/CHOP signaling pathway. For in vitro studies, the oxygen-glucose deprivation (OGD) SH-SY5Y model was employed. Western blot and Hoechst 33342/PI double staining were utilized to explore the effects of crocetin, the main active metabolite of GJ-4. Like GJ-4 in vivo, crocetin in vitro also decreased ERS-related protein expression and inhibited the activation of the PERK/eIF2[Formula: see text]/ATF4/CHOP signaling pathway. Thus, crocetin exerted similar protective roles on OGD challenged SH-SY5Y cells in vitro. In summary, GJ-4 and crocetin reduce the ERS in the brain of VD rats and SY5Y cells subjected to OGD and inhibit neuronal apoptosis through suppression of the PERK/eIF2[Formula: see text]/ATF4/CHOP pathway, suggesting that GJ-4 may be useful for the treatment of VD.
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Affiliation(s)
- Fang-Yu Yuan
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Cheng Ju
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Cai-Xia Zang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Hui Liu
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Mei-Yu Shang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Jing-Wen Ning
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Yang Yang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Jing-Wei Ma
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Gen Li
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Yang Yu
- Institute of TCM and Natural Products, College of Pharmacy, Jinan University, Guangzhou, Guangdong Province 510632, P. R. China
| | - Xin-Sheng Yao
- Institute of TCM and Natural Products, College of Pharmacy, Jinan University, Guangzhou, Guangdong Province 510632, P. R. China
| | - Xiu-Qi Bao
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
| | - Dan Zhang
- State Key Laboratory of Bioactive Substrate and Function of Natural Medicine, Institute of Materica Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, P. R. China
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Rzeszotek S, Kolasa A, Pilutin A, Misiakiewicz-Has K, Sielatycka K, Wiszniewska B. The Interplay between Finasteride-Induced Androgen Imbalance, Endoplasmic Reticulum Stress, Oxidative Stress, and Liver Disorders in Paternal and Filial Generation. Biomedicines 2022; 10:2725. [PMID: 36359245 PMCID: PMC9687381 DOI: 10.3390/biomedicines10112725] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/21/2022] [Accepted: 10/24/2022] [Indexed: 10/20/2023] Open
Abstract
Finasteride (Fin) causes androgen imbalance by inhibiting the conversion of testosterone (T) to its more active metabolite, dihydrotestosterone (DHT). Androgen receptors (AR) are present (e.g., in hepatocytes), which have well-developed endoplasmic reticulum (ERet). Cellular protein quality control is carried out by ERet in two paths: (i) unfolded protein response (UPR) and/or (ii) endoplasmic reticulum associated degradation (ERAD). ERet under continuous stress can generate changes in the UPR and can direct the cell on the pathway of life or death. It has been demonstrated that genes involved in ERet stress are among the genes controlled by androgens in some tissues. Oxidative stress is also one of the factors affecting the functions of ERet and androgens are one of the regulators of antioxidant enzyme activity. In this paper, we discuss/analyze a possible relationship between androgen imbalance in paternal generation with ERet stress and liver disorders in both paternal and filial generation. In our rat model, hyperglycemia and subsequent higher accumulation of hepatic glycogen were observed in all filial generation obtained from females fertilized by Fin-treated males (F1:Fin). Importantly, genes encoding enzymes involved in glucose and glycogen metabolism have been previously recognized among UPR targets.
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Affiliation(s)
- Sylwia Rzeszotek
- Department of Histology and Embryology, Pomeranian Medical University in Szczecin, 70-111 Szczecin, Poland
| | - Agnieszka Kolasa
- Department of Histology and Embryology, Pomeranian Medical University in Szczecin, 70-111 Szczecin, Poland
| | - Anna Pilutin
- Department of Histology and Embryology, Pomeranian Medical University in Szczecin, 70-111 Szczecin, Poland
| | - Kamila Misiakiewicz-Has
- Department of Histology and Embryology, Pomeranian Medical University in Szczecin, 70-111 Szczecin, Poland
| | - Katarzyna Sielatycka
- Institute of Biology, Faculty of Exact and Natural Sciences, University of Szczecin, 71-415 Szczecin, Poland
| | - Barbara Wiszniewska
- Department of Histology and Embryology, Pomeranian Medical University in Szczecin, 70-111 Szczecin, Poland
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You J, Zhao M, Chen S, Jiang L, Gao S, Yin H, Zhao L. Effect of chitooligosaccharides with a specific degree of polymerization on multiple targets in T2DM mice. BIORESOUR BIOPROCESS 2022; 9:94. [PMID: 38647883 PMCID: PMC10992422 DOI: 10.1186/s40643-022-00579-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/11/2022] [Indexed: 11/10/2022] Open
Abstract
Chitooligosaccharides (COS) are found naturally in the ocean and present a variety of physiological activities, of which hypoglycemic action has attracted considerable research attention. This study aimed to assess the therapeutic effect of COS on mice suffering from type 2 diabetes mellitus (T2DM). COS effectively reduced blood glucose and blood lipid levels and improved glucose tolerance. Furthermore, COS revealed strong inhibitory activity against α-glucosidase, reducing postprandial blood glucose levels. Molecular docking data showed that COS might interact with surrounding amino acids to form a complex and decrease α-glucosidase activity. Additionally, COS enhanced insulin signal transduction and glycogen synthesis while restricting gluconeogenesis in the liver and muscles, reducing insulin resistance (IR) as a result. Moreover, COS effectively protected and restored islet cell function to increase insulin secretion. These results indicated that COS exhibited a significant hypoglycemic effect with multi-target participation. Therefore, COS may serve as a new preventive or therapeutic drug for diabetes to alleviate metabolic syndrome.
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Affiliation(s)
- Jiangshan You
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China
| | - Mengyao Zhao
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China
- Shanghai Collaborative Innovation Center for Biomanufacturing Technology (SCICBT), Shanghai, 200237, China
| | - Shumin Chen
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China
| | - Lihua Jiang
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China
- Shanghai Collaborative Innovation Center for Biomanufacturing Technology (SCICBT), Shanghai, 200237, China
| | - Shuhong Gao
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China
| | - Hao Yin
- Organ Transplant Center, Shanghai Changzheng Hospital, Shanghai, 200003, China.
| | - Liming Zhao
- State Key Laboratory of Bioreactor Engineering, School of Biotechnology, East China University of Science and Technology, Shanghai, 200237, China.
- Shanghai Collaborative Innovation Center for Biomanufacturing Technology (SCICBT), Shanghai, 200237, China.
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21
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Yang B, Zhang T, Wei L, Zhao B, Wang Q, Yao Z, Yi S. Glucocorticoid induces GSDMD-dependent pyrolysis in PC12 cells via endoplasmic reticulum stress. PLoS One 2022; 17:e0274057. [PMID: 36048803 PMCID: PMC9436126 DOI: 10.1371/journal.pone.0274057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 08/18/2022] [Indexed: 11/18/2022] Open
Abstract
Objective The present study explored whether pyroptosis is involved in the injury process of PC12 cells induced by glucocorticoid (GC) and the regulatory relationship between endoplasmic reticulum stress (ERS) and pyrolysis. Methods LDH leakage of PC12 cells was detected by LDH assay. The number of dead cells was detected by SYTOX green nucleic acid staining. The levels of IL-1β and IL-18 in the supernatants was detected by ELSIA assay. The expression levels of glucose regulated protein 78 (GRP78), cleaved gasdermin D-NT (cleaved-GSDMD-NT), NLR-pyrin domain-containing 3 (NLRP3) and cleaved-caspase-1 were observed by immunofluorescence staining and western blot. Results The LDH assay revealed that GC exposure significantly increased the release of LDH. The results of SYTOX green acid staining showed that GC exposure significantly increased the number of SYTOX green acid-positive cells. The ELSIA assay revealed that GC exposure significantly increased the levels of IL-1β and IL-18 in the supernatants. The results of immunofluorescence staining and western blot showed that GC exposure significantly increased the expression of GRP78, cleaved-GSDMD-NT, NLRP3 and cleaved caspase-1. Treatment with the ERS inhibitor tauroursodeoxycholate (TUDCA) and siRNA GSDMD attenuated related damage and downregulated the expression of the abovementioned proteins. Conclusion The present study clearly demonstrated that GC exposure can induce GSDMD-dependent pyrolysis, and ERS is involved in the above damage process.
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Affiliation(s)
- Bin Yang
- Xinxiang Key Laboratory of Forensic Toxicology, School of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan, China
- The Second Affiliated Hospital of Xinxiang Medical University, Henan Mental Hospital, Xinxiang, Henan, China
- Lifestyle Science Cluster, Advanced Medical and Dental Institute, Universiti Sains Malaysia, Pulau Pinang, Malaysia
| | - Tengteng Zhang
- Xinxiang Key Laboratory of Forensic Toxicology, School of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan, China
| | - Lai Wei
- Xinxiang Key Laboratory of Forensic Toxicology, School of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan, China
| | - Bin Zhao
- Xinxiang Key Laboratory of Forensic Toxicology, School of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan, China
| | - Qingzhi Wang
- Xinxiang Key Laboratory of Forensic Toxicology, School of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan, China
| | - Zhijun Yao
- School of Basic Medical Science, Xinxiang Medical University, Xinxiang, Henan, China
| | - Shanyong Yi
- Xinxiang Key Laboratory of Forensic Toxicology, School of Forensic Medicine, Xinxiang Medical University, Xinxiang, Henan, China
- * E-mail:
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22
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Carvalho-Gontijo R, Han C, Zhang L, Zhang V, Hosseini M, Mekeel K, Schnabl B, Loomba R, Karin M, Brenner DA, Kisseleva T. Metabolic Injury of Hepatocytes Promotes Progression of NAFLD and AALD. Semin Liver Dis 2022; 42:233-249. [PMID: 36001995 PMCID: PMC9662188 DOI: 10.1055/s-0042-1755316] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Nonalcoholic liver disease is a component of metabolic syndrome associated with obesity, insulin resistance, and hyperlipidemia. Excessive alcohol consumption may accelerate the progression of steatosis, steatohepatitis, and fibrosis. While simple steatosis is considered a benign condition, nonalcoholic steatohepatitis with inflammation and fibrosis may progress to cirrhosis, liver failure, and hepatocellular cancer. Studies in rodent experimental models and primary cell cultures have demonstrated several common cellular and molecular mechanisms in the pathogenesis and regression of liver fibrosis. Chronic injury and death of hepatocytes cause the recruitment of myeloid cells, secretion of inflammatory and fibrogenic cytokines, and activation of myofibroblasts, resulting in liver fibrosis. In this review, we discuss the role of metabolically injured hepatocytes in the pathogenesis of nonalcoholic steatohepatitis and alcohol-associated liver disease. Specifically, the role of chemokine production and de novo lipogenesis in the development of steatotic hepatocytes and the pathways of steatosis regulation are discussed.
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Affiliation(s)
- Raquel Carvalho-Gontijo
- Department of Medicine, University of California, San Diego School of Medicine, La Jolla,Department of Surgery, University of California, San Diego School of Medicine, La Jolla
| | - Cuijuan Han
- Department of Medicine, University of California, San Diego School of Medicine, La Jolla,Department of Surgery, University of California, San Diego School of Medicine, La Jolla
| | - Lei Zhang
- Department of Medicine, University of California, San Diego School of Medicine, La Jolla,Department of Surgery, University of California, San Diego School of Medicine, La Jolla
| | - Vivian Zhang
- Department of Medicine, University of California, San Diego School of Medicine, La Jolla,Department of Surgery, University of California, San Diego School of Medicine, La Jolla
| | - Mojgan Hosseini
- Department of Pathology, University of California, San Diego School of Medicine, La Jolla
| | - Kristin Mekeel
- Department of Surgery, University of California, San Diego School of Medicine, La Jolla
| | - Bernd Schnabl
- Department of Medicine, University of California, San Diego School of Medicine, La Jolla
| | - Rohit Loomba
- Department of Medicine, University of California, San Diego School of Medicine, La Jolla
| | - Michael Karin
- Department of Pharmacology, University of California, San Diego School of Medicine, La Jolla
| | - David A. Brenner
- Department of Medicine, University of California, San Diego School of Medicine, La Jolla
| | - Tatiana Kisseleva
- Department of Surgery, University of California, San Diego School of Medicine, La Jolla,Corresponding author: Tatiana Kisseleva, 9500 Gilman Drive, #0063, La Jolla, California 92093, USA. Phone: 858.822.5339,
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Kumar M, Garg H, Gupta N, Sharma A, Kaushal S, Kumar R, Dinda AK. Glucose- regulated protein 78 (GRP78) in renal cell carcinoma: A novel biomarker for predicting tumor behavior. Heliyon 2021; 7:e07300. [PMID: 34195416 PMCID: PMC8239724 DOI: 10.1016/j.heliyon.2021.e07300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/17/2021] [Accepted: 06/09/2021] [Indexed: 11/30/2022] Open
Abstract
Objective To study the mRNA and protein expression of GRP78 in tumor and serum of the RCC patients and compare with the controls and to correlate the expression with the grade and stage of RCC. Materials and methods A prospective cohort study involving 60 patients planned for radical/partial nephrectomy for primary RCC between July 2017 to June 2019. The RCC and adjacent non-tumorous renal tissues (Control) along with serum samples of patients were collected. Control for the serum samples is from the patients undergoing simple nephrectomy for non-functioning kidney due to benign etiology. The GRP78 expression was studied using RT-PCR for mRNA expression, Western blot analysis and immunohistochemistry (IHC) for protein expression and using ELISA in serum for both the subjects and controls. Results Mean age of patients was 50.3 years. The mRNA and protein expression of GRP78 in tissue samples were significantly higher in RCC patients as compared to controls (p < 0.001). IHC also demonstrated significantly higher expression in tumour samples as compared to controls (p < 0.001). Circulatory levels of GRP78 in serum samples were also significantly increased (p < 0.0001) in RCC patients in comparison to control subjects. The expression of GRP78 in circulation significantly correlated with the pathological tumor stage (p = 0.03), grade of disease (p < 0.001). Conclusion The GRP78 in RCC is significantly upregulated both at molecular and protein level expression. The overexpression of GRP78 correlates with the stage and grade of disease, thereby, highlighting its prognostic ability.
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Affiliation(s)
- Manoj Kumar
- Department of Urology, All India Institute of Medical Sciences, New Delhi, India
| | - Harshit Garg
- Department of Urology, All India Institute of Medical Sciences, New Delhi, India
| | - Nidhi Gupta
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Alpana Sharma
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi, India
| | - Seema Kaushal
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Rajeev Kumar
- Department of Urology, All India Institute of Medical Sciences, New Delhi, India
| | - Amit Kumar Dinda
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
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Choi MY, Lim SJ, Kim MJ, Wee YM, Kwon H, Jung CH, Kim YH, Han DJ, Shin S. Islet isograft transplantation improves insulin sensitivity in a murine model of type 2 diabetes. Endocrine 2021; 72:660-671. [PMID: 33713015 DOI: 10.1007/s12020-021-02655-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 01/29/2021] [Indexed: 12/25/2022]
Abstract
PURPOSE Type 2 diabetes develops in the presence of chronic overnutrition and genetic susceptibility, and causes insulin resistance and relative insulin deficiency. We hypothesized that islet transplantation can improve insulin sensitivity by modifying the mediators of insulin sensitivity in the pancreas, liver, muscle, and adipose tissues. METHODS Eight-week-old male mice were used as both recipients and donors in this study. To induce type 2 diabetes with partial β-cell failure, the mice were fed a high-fat diet for 4 weeks and then injected with low-dose streptozotocin. Approximately 400 islet cells from a donor mouse were injected into the renal capsule of a recipient mouse for islet transplantation. After 6 weeks following transplantation, the mediators of insulin sensitivity in the pancreas, liver, muscle, and adipose tissues were quantitatively compared between islet-transplanted and non-transplanted groups. RESULTS Intravenous glucose tolerance test showed that whereas the non-transplanted mice failed to show notable reductions in the glucose level, the islet-transplanted mice showed significant reductions in the serum glucose level to ~200 mg/dL at 6 weeks after islet transplantation. The islet-transplanted mice showed significantly higher Matsuda index and significantly lower HOMA-IR than did the non-transplanted mice, thus signifying improved insulin sensitivity. CONCLUSIONS Islet transplantation resulted in improvements in multiple indices of insulin sensitivity in a murine model of type 2 diabetes. Islet transplantation may be utilized to improve insulin sensitivity in patients with type 2 diabetes.
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Affiliation(s)
- Monica Young Choi
- Division of Kidney and Pancreas Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seong Jun Lim
- Division of Kidney and Pancreas Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Mi Joung Kim
- Division of Kidney and Pancreas Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yu-Mee Wee
- Division of Kidney and Pancreas Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hyunwook Kwon
- Division of Kidney and Pancreas Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Chang Hee Jung
- Asan Diabetes Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Young Hoon Kim
- Division of Kidney and Pancreas Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Duck Jong Han
- Division of Kidney and Pancreas Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sung Shin
- Division of Kidney and Pancreas Transplantation, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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Traumatic Brain Injury: Ultrastructural Features in Neuronal Ferroptosis, Glial Cell Activation and Polarization, and Blood-Brain Barrier Breakdown. Cells 2021; 10:cells10051009. [PMID: 33923370 PMCID: PMC8146242 DOI: 10.3390/cells10051009] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 04/06/2021] [Accepted: 04/07/2021] [Indexed: 12/21/2022] Open
Abstract
The secondary injury process after traumatic brain injury (TBI) results in motor dysfunction, cognitive and emotional impairment, and poor outcomes. These injury cascades include excitotoxic injury, mitochondrial dysfunction, oxidative stress, ion imbalance, inflammation, and increased vascular permeability. Electron microscopy is an irreplaceable tool to understand the complex pathogenesis of TBI as the secondary injury is usually accompanied by a series of pathologic changes at the ultra-micro level of the brain cells. These changes include the ultrastructural changes in different parts of the neurons (cell body, axon, and synapses), glial cells, and blood–brain barrier, etc. In view of the current difficulties in the treatment of TBI, identifying the changes in subcellular structures can help us better understand the complex pathologic cascade reactions after TBI and improve clinical diagnosis and treatment. The purpose of this review is to summarize and discuss the ultrastructural changes related to neurons (e.g., condensed mitochondrial membrane in ferroptosis), glial cells, and blood–brain barrier in the existing reports of TBI, to deepen the in-depth study of TBI pathomechanism, hoping to provide a future research direction of pathogenesis and treatment, with the ultimate aim of improving the prognosis of patients with TBI.
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26
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Kim DH, Kim BM, Chung KW, Choi YJ, Yu BP, Chung HY. Interaction between CHOP and FoxO6 promotes hepatic lipid accumulation. Liver Int 2020; 40:2706-2718. [PMID: 32639626 PMCID: PMC7689817 DOI: 10.1111/liv.14594] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 06/19/2020] [Accepted: 06/22/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Endoplasmic reticulum (ER) stress is one of the major causes of hepatic insulin resistance through increasing de novo lipogenesis. Forkhead box O6 (FoxO6) is a transcription factor mediating insulin signalling to glucose and lipid metabolism, therefore, dysregulated FoxO6 is involved in hepatic insulin resistance. In this study, we elucidated the role of FoxO6 in ER stress-induced hepatic lipogenesis. METHODS Hepatic ER stress responses and lipogenesis were monitored in mice overexpressed with constitutively active FoxO6 allele and FoxO6-null mice. In the in vitro study, HepG2 cells overexpressing constitutively active FoxO6 were treated with palmitate, and then alterations in ER stress and lipid metabolism were measured. RESULTS FoxO6 activation induced hepatic lipogenesis and the expression of ER stress-inducible genes. The expression and transcriptional activity of peroxisome proliferator-activated receptor γ (PPARγ) were significantly increased in constitutively active FoxO6 allele. Interestingly, we found that the active FoxO6 physically interacted with C/EBP homologous protein (CHOP), an ER stress-inducible transcription factor, which was responsible for PPARγ expression. Palmitate treatment caused the expression of ER stress-inducible genes, which was deteriorated by FoxO6 activation in HepG2 cells. Palmitate-induced ER stress led to PPARγ expression through interactions between CHOP and FoxO6 corresponding to findings in the in vivo study. On the other hand, the expression of PPARα and β-oxidation were decreased in constitutively active FoxO6 allele which implied that lipid catabolism is also regulated by FoxO6. CONCLUSION Our data present significant evidence demonstrating that CHOP and FoxO6 interact to induce hepatic lipid accumulation through PPARγ expression during ER stress.
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Affiliation(s)
- Dae Hyun Kim
- Department of PharmacyCollege of PharmacyPusan National UniversityGeumjeong‐GuBusanKorea
| | - Byeong Moo Kim
- Department of PharmacyCollege of PharmacyPusan National UniversityGeumjeong‐GuBusanKorea
| | - Ki Wung Chung
- Department of PharmacyCollege of PharmacyPusan National UniversityGeumjeong‐GuBusanKorea,Department of PharmacyCollege of PharmacyKyungsung UniversityNam‐guBusanKorea
| | - Yeon Ja Choi
- Department of Biopharmaceutical EngineeringDivision of Chemistry and BiotechnologyCollege of Science and TechnologyDongguk UniversityGyeongjuKorea
| | - Byung Pal Yu
- Department of PhysiologyThe University of Texas Health Science Center at San AntonioTXUSA
| | - Hae Young Chung
- Department of PharmacyCollege of PharmacyPusan National UniversityGeumjeong‐GuBusanKorea
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27
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Qiu J, Zhou S, Cheng W, Luo C. LINC00294 induced by GRP78 promotes cervical cancer development by promoting cell cycle transition. Oncol Lett 2020; 20:262. [PMID: 32989396 PMCID: PMC7517597 DOI: 10.3892/ol.2020.12125] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 05/27/2020] [Indexed: 12/17/2022] Open
Abstract
Cervical cancer is one of the most common gynecological malignancies, and it has become a crucial public health problem. In the present study, the expression profiles of cervical cancer and normal cervical tissues were downloaded from the Gene Expression Omnibus and The Cancer Genome Atlas databases. Subsequently, the dysregulated long non-coding RNAs (lncRNAs) in cervical cancer were identified using R software Differentially expressed lncRNAs in cervical cancer that were associated with glucose-regulated protein 78 (GRP78) were screened out and the results demonstrated that eight lncRNAs were strongly positively correlated with GRP78. In order to confirm the relationship between GRP78 and candidate lncRNAs, GRP78 small interfering RNA (siRNA) was transfected into HeLa cells. The target lncRNAs that were regulated by GRP78 were then identified by reverse transcription-quantitative PCR and it was revealed that LINC00294 was significantly downregulated following GRP78-knockdown. Subsequently, Gene Set Enrichment Analysis demonstrated that LINC00294 was mainly enriched in regulating the cell cycle and the Hedgehog pathway. Following transfection of HeLa and SiHa cells with LINC00294 siRNA, the cell cycle was arrested at the G0/G1 phase. Western blotting suggested that LINC00294-knockdown downregulated the expression of cell cycle-associated factors (cyclin D, cyclin E and cyclin Dependent kinase 4) and upregulated cell cycle inhibitory factors (p16 and p21). The Hedgehog pathway was inhibited following knockdown of LINC00294 in HeLa and SiHa cells. In summary, LINC00294 induced by GRP78 promoted the progression of cervical cancer by regulating the cell cycle via Hedgehog pathway.
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Affiliation(s)
- Jiangnan Qiu
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Shulin Zhou
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Wenjun Cheng
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
| | - Chengyan Luo
- Department of Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210000, P.R. China
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Fang T, Huang S, Chen Y, Chen Z, Chen J, Hu W. Glucagon Like Peptide-1 Receptor Agonists Alters Pancreatic and Hepatic Histology and Regulation of Endoplasmic Reticulum Stress in High-fat Diet Mouse Model. Exp Clin Endocrinol Diabetes 2020; 129:625-633. [PMID: 32961563 DOI: 10.1055/a-1240-4936] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Obesity is a major health problem worldwide, and non-alcoholic fatty pancreas disease (NAFPD) and non-alcoholic fatty liver disease (NAFLD) are obesity-associated complications. Liraglutide, a glucagon-like peptide-1 (GLP-1) agonist, has been approved for treatment of obesity. We aimed to evaluate the therapeutic effects of liraglutide on the complications through its regulation of endoplasmic reticulum (ER) stress. METHODS A high-fat diet mouse model was established in C57BL/6J mice. Two groups of mice were fed a high-fat diet with 60% fat for 16 weeks and control mice were fed standard chow. A four-week 0.6 mg/kg/day liraglutide treatment was started in one high-fat diet group after 12 weeks of the high-fat diet. After sacrificing the mice, pancreatic and hepatic tissues were prepared for western blot and immunohistochemistry for ER stress proteins, including activating transcription factor 4 (ATF4), caspase 12, C/EBP homologous protein (CHOP) eukaryotic initiation factor 2 α (eIF2α), glucose regulated protein (GRP) 78 and protein kinase RNA-like endoplasmic reticulum kinase (PERK). RESULTS Liraglutide significantly decreased body weight gained by mice consuming a high-fat diet (27.6 g vs. 34.5 g, P<0.001), and levels of all ER proteins increased significantly in both the pancreas and liver (all P<0.05). Expression of most ER stress proteins in pancreatic tissue correlated with disease scores of NAFLD (all P<0.05). However, no significant differences were found in pancreatic ATF 4 expression between mice without NAFLD, and those with early non-alcoholic steatohepatitis (NASH) and fibrotic NASH (P=0.122). CONCLUSION Liraglutide reduces the severity of NAFPD and NAFLD may through regulating the ER stress pathway and downstream apoptosis signaling.
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Affiliation(s)
- Taiyong Fang
- Department of Gastroenterology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
| | - Siying Huang
- Department of Gastroenterology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
| | - Yongpeng Chen
- Department of Gastroenterology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
| | - Zongchi Chen
- Department of Gastroenterology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
| | - Jiangmu Chen
- Department of Gastroenterology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
| | - Weitao Hu
- Department of Gastroenterology, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, China
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29
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Schiffer TA, Lundberg JO, Weitzberg E, Carlström M. Modulation of mitochondria and NADPH oxidase function by the nitrate-nitrite-NO pathway in metabolic disease with focus on type 2 diabetes. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165811. [PMID: 32339643 DOI: 10.1016/j.bbadis.2020.165811] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 04/16/2020] [Accepted: 04/18/2020] [Indexed: 12/15/2022]
Abstract
Mitochondria play fundamental role in maintaining cellular metabolic homeostasis, and metabolic disorders including type 2 diabetes (T2D) have been associated with mitochondrial dysfunction. Pathophysiological mechanisms are coupled to increased production of reactive oxygen species and oxidative stress, together with reduced bioactivity/signaling of nitric oxide (NO). Novel strategies restoring these abnormalities may have therapeutic potential in order to prevent or even treat T2D and associated cardiovascular and renal co-morbidities. A diet rich in green leafy vegetables, which contains high concentrations of inorganic nitrate, has been shown to reduce the risk of T2D. To this regard research has shown that in addition to the classical NO synthase (NOS) dependent pathway, nitrate from our diet can work as an alternative precursor for NO and other bioactive nitrogen oxide species via serial reductions of nitrate (i.e. nitrate-nitrite-NO pathway). This non-conventional pathway may act as an efficient back-up system during various pathological conditions when the endogenous NOS system is compromised (e.g. acidemia, hypoxia, ischemia, aging, oxidative stress). A number of experimental studies have demonstrated protective effects of nitrate supplementation in models of obesity, metabolic syndrome and T2D. Recently, attention has been directed towards the effects of nitrate/nitrite on mitochondrial functions including beiging/browning of white adipose tissue, PGC-1α and SIRT3 dependent AMPK activation, GLUT4 translocation and mitochondrial fusion-dependent improvements in glucose homeostasis, as well as dampening of NADPH oxidase activity. In this review, we examine recent research related to the effects of bioactive nitrogen oxide species on mitochondrial function with emphasis on T2D.
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Affiliation(s)
- Tomas A Schiffer
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
| | - Jon O Lundberg
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Eddie Weitzberg
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Department of Perioperative Medicine and Intensive Care, Karolinska University Hospital, Stockholm, Sweden
| | - Mattias Carlström
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
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Ghali GZ, Ghali MGZ. Nafamostat mesylate attenuates the pathophysiologic sequelae of neurovascular ischemia. Neural Regen Res 2020; 15:2217-2234. [PMID: 32594033 PMCID: PMC7749469 DOI: 10.4103/1673-5374.284981] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Nafamostat mesylate, an apparent soi-disant panacea of sorts, is widely used to anticoagulate patients undergoing hemodialysis or cardiopulmonary bypass, mitigate the inflammatory response in patients diagnosed with acute pancreatitis, and reverse the coagulopathy of patients experiencing the commonly preterminal disseminated intravascular coagulation in the Far East. The serine protease inhibitor nafamostat mesylate exhibits significant neuroprotective effects in the setting of neurovascular ischemia. Nafamostat mesylate generates neuroprotective effects by attenuating the enzymatic activity of serine proteases, neuroinflammatory signaling cascades, and the endoplasmic reticulum stress responses, downregulating excitotoxic transient receptor membrane channel subfamily 7 cationic currents, modulating the activity of intracellular signal transduction pathways, and supporting neuronal survival (brain-derived neurotrophic factor/TrkB/ERK1/2/CREB, nuclear factor kappa B. The effects collectively reduce neuronal necrosis and apoptosis and prevent ischemia mediated disruption of blood-brain barrier microarchitecture. Investigational clinical applications of these compounds may mitigate ischemic reperfusion injury in patients undergoing cardiac, hepatic, renal, or intestinal transplant, preventing allograft rejection, and treating solid organ malignancies. Neuroprotective effects mediated by nafamostat mesylate support the wise conduct of randomized prospective controlled trials in Western countries to evaluate the clinical utility of this compound.
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Affiliation(s)
- George Zaki Ghali
- United States Environmental Protection Agency, Arlington, VA; Department of Toxicology, Purdue University, West Lafayette, IN, USA
| | - Michael George Zaki Ghali
- Department of Neurological Surgery, University of California San Francisco, San Francisco, CA; Department of Neurobiology and Anatomy, Drexel University College of Medicine, Philadelphia, PA, USA
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Shou J, Chen PJ, Xiao WH. Mechanism of increased risk of insulin resistance in aging skeletal muscle. Diabetol Metab Syndr 2020; 12:14. [PMID: 32082422 PMCID: PMC7014712 DOI: 10.1186/s13098-020-0523-x] [Citation(s) in RCA: 130] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 02/04/2020] [Indexed: 12/17/2022] Open
Abstract
As age increases, the risk of developing type 2 diabetes increases, which is associated with senile skeletal muscle dysfunction. During skeletal muscle aging, mitochondrial dysfunction, intramyocellular lipid accumulation, increased inflammation, oxidative stress, modified activity of insulin sensitivity regulatory enzymes, endoplasmic reticulum stress, decreased autophagy, sarcopenia and over-activated renin-angiotensin system may occur. These changes can impair skeletal muscle insulin sensitivity and increase the risk of insulin resistance and type 2 diabetes during skeletal muscle aging. This review of the mechanism of the increased risk of insulin resistance during skeletal muscle aging will provide a more comprehensive explanation for the increased incidence of type 2 diabetes in elderly individuals, and will also provide a more comprehensive perspective for the prevention and treatment of type 2 diabetes in elderly populations.
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Affiliation(s)
- Jian Shou
- School of Kinesiology, Shanghai University of Sport, 200 Hengren Road, Yangpu District, Shanghai, 200438 China
| | - Pei-Jie Chen
- School of Kinesiology, Shanghai University of Sport, 200 Hengren Road, Yangpu District, Shanghai, 200438 China
| | - Wei-Hua Xiao
- School of Kinesiology, Shanghai University of Sport, 200 Hengren Road, Yangpu District, Shanghai, 200438 China
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Li Y, Liu Z, Wang D, Gao H, Zhu Z, Wang Y, Luo Q, Jiang S, Zhang J, Yang X. Ucf-101 protects in vivoandin vitro models of PD against 6-hydroxydopamine toxicity by alleviating endoplasmic reticulum stress via the Wnt/β-catenin pathway. J Clin Neurosci 2019; 71:217-225. [PMID: 31883812 DOI: 10.1016/j.jocn.2019.11.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 10/05/2019] [Accepted: 11/19/2019] [Indexed: 12/13/2022]
Abstract
The accumulation of α-syn which induce endoplasmic reticulum stress (ERS) and mediate various signaling pathways involved in DA neuronal degeneration, and the apoptosis of dopamine (DA) neurons are pathological markers of Parkinson's disease (PD). High-temperature requirement protein A2 (HtrA2) is synthesized in the endoplasmic reticulum, and the expression level of HtrA2 can be upregulated by drugs or by unfolded proteins. Ucf-101 is a specific inhibitor of HtrA2, and studies have shown that Ucf-101 reduced apoptosis in PC12 cells. Our study showed that PC12 cells treated with 60 μM 6-OHDA for 24 h had significantly decreased cell viability compared to that of controls. A low concentration (2.5 μM) of Ucf-101 decreased the apoptosis rate of the PD cell model, but a high concentration (≥10 μM) increased the apoptosis rate, compared to that of controls. 6-OHDA upregulated the expression of HtrA2, α-syn, CHOP, Grp78 and active caspase-3 and reduced the levels of TH and XIAP. Ucf-101 reduced the level of ERS and apoptosis bothin vivoandin vitro. The ratio of p-GSK3β (Tyr216 to Ser9) increased in PD rats. However, Ucf-101 down-regulated the activation of GSK3β and activated the Wnt/β-catenin pathway that was caused by 6-OHDA. Ucf-101 activated the Wnt/β-catenin pathway and significantly attenuated 6-OHDA-induced neurotoxicity, which was related to the inhibition of ERS and the reduction of the apoptosis rate of PC12 cells and DA neurons in the midbrain of PD rats. Ucf-101 has certain neuroprotective effects.
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Affiliation(s)
- Yanxia Li
- Department of Rehabilitation Medicine, the Second Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Zhaoyang Liu
- Department of Stomatology, Jingzhou Central Hospital, The Second Clinical Medical College, Yangtze University, China
| | - Dan Wang
- Department of Neurology, the Second Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Hua Gao
- Department of Neurology, the Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Zhengquan Zhu
- Department of Neurosurgery, Affiliated Tumor Hospital of Xinjiang Medical, University, Xinshi District, Urumqi, China
| | - Yuling Wang
- Department of VIP, the first Affiliated Hospital of Xinjiang Medical University, Xinshi District, Urumqi, China
| | - Qin Luo
- Department of VIP, Affiliated Tumor Hospital of Xinjiang Medical University, Xinshi District, Urumqi, China
| | - Sen Jiang
- Department of Neurology, the Second Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Ji Zhang
- Department of Neurosurgery, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.
| | - Xinling Yang
- Department of Neurology, the Second Affiliated Hospital of Xinjiang Medical University, Urumqi, China.
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Kapuy O, Márton M, Bánhegyi G, Vinod PK. Multiple system-level feedback loops control life-and-death decisions in endoplasmic reticulum stress. FEBS Lett 2019; 594:1112-1123. [PMID: 31769869 DOI: 10.1002/1873-3468.13689] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 11/14/2019] [Indexed: 12/25/2022]
Abstract
Scientific results have revealed that autophagy is able to promote cell survival in response to endoplasmic reticulum (ER) stress, while drastic events result in apoptotic cell death. Here, we analyse the important crosstalk of life-and-death decisions from a systems biological perspective by studying the regulatory modules of the unfolded protein response (UPR). While a double-negative loop between autophagy and apoptosis inducers is crucial for the switch-like characteristic of the stress response mechanism, a positive feedback loop between ER stress sensors is also essential. Corresponding to experimental data, here, we show the dynamical significance of Gadd34-CHOP connections inside the PERK branch of the UPR. The multiple system-level feedback loops seem to be crucial for managing a robust life-and-death decision depending on the level and durability of cellular stress.
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Affiliation(s)
- Orsolya Kapuy
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary
| | - Margita Márton
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary
| | - Gábor Bánhegyi
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary.,Pathobiochemistry Research Group of the Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
| | - P K Vinod
- Centre for Computational Natural Sciences and Bioinformatics, International Institute of Information Technology, Hyderabad, India
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Abstract
Autophagy is a cellular homeostatic program for the turnover of cellular organelles and proteins, in which double-membraned vesicles (autophagosomes) sequester cytoplasmic cargos, which are subsequently delivered to the lysosome for degradation. Emerging evidence implicates autophagy as an important modulator of human disease. Macroautophagy and selective autophagy (e.g., mitophagy, aggrephagy) can influence cellular processes, including cell death, inflammation, and immune responses, and thereby exert both adaptive and maladaptive roles in disease pathogenesis. Autophagy has been implicated in acute kidney injury, which can arise in response to nephrotoxins, sepsis, and ischemia/reperfusion, and in chronic kidney diseases. The latter includes comorbidities of diabetes and recent evidence for chronic obstructive pulmonary disease-associated kidney injury. Roles of autophagy in polycystic kidney disease and kidney cancer have also been described. Targeting the autophagy pathway may have therapeutic benefit in the treatment of kidney disorders.
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Affiliation(s)
- Mary E Choi
- Joan and Sanford I. Weill Department of Medicine, Division of Nephrology and Hypertension, Weill Cornell Medicine, New York, NY 10065, USA; .,NewYork-Presbyterian Hospital/Weill Cornell Medical Center, New York, NY 10065, USA
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Wang Q, Zhang L, Chen SQ, Ma WY, Guo YL, Gao Y, Tian FJ, Qiu YL. Role of endoplasmic reticulum stress and oxidative stress in vinyl chloride-induced hepatic steatosis in mice. Toxicol Appl Pharmacol 2019; 381:114730. [PMID: 31445928 DOI: 10.1016/j.taap.2019.114730] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 08/16/2019] [Accepted: 08/21/2019] [Indexed: 10/26/2022]
Abstract
Vinyl chloride (VC) is a common industrial organochlorine, shown to cause hepatic angiosarcoma and hepatic steatosis. However, the role of endoplasmic reticulum stress (ERS) and oxidative stress (OS) in hepatic steatosis after subchronic exposure to VC in mice, is unclear. Based on body weight, forty healthy SPF male C57BL/6 J mice were randomly divided into a control group and three VC exposure groups (57.3, 286.7, and 1433.6 ppm) (n = 10 each). VC was administered by static inhalation in a 50 L sealed plexiglass inhalation chamber for 2 h per day, five days per week for 16 weeks. Serum and liver tissues were analyzed for liver enzymes and lipids. Hepatic cytochrome P450 2E1 (CYP2E1) and OS related indicators malondialdehyde (MDA), glutathione (GSH), and superoxide dismutase (SOD) were measured. The mRNA expressions of ERS downstream genes, including glycoregulatory protein-78 (GRP-78), sterol regulatory element binding protein-1 (SREBP-1), Acetyl-CoA carboxylase (ACC), and fatty acid synthase (FAS) were detected by real-time PCR (RT-PCR) and their protein levels examined by western blotting. The CYP2E1 levels increased after VC administration in a dose-dependent manner. MDA levels increased (P < .05) and SOD and GSH levels decreased (P < .05) in the liver of each group with the increase in the dose of VC. ERS and expressions of downstream genes (GRP-78, SREBP-1, ACC, and FAS) were enhanced after VC administration. These results suggested that OS and ERS could be induced by VC, which may lead to an increase in fatty acid synthesis in the liver, further aggravating hepatic steatosis.
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Affiliation(s)
- Qian Wang
- Department of Toxicology, School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Lin Zhang
- Department of Toxicology, School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Shi-Qi Chen
- Department of Toxicology, School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Wen-Yan Ma
- Department of Toxicology, School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Yan-Lin Guo
- Department of Pathology, School of Basic Medical, Shanxi Medical University, Taiyuan, China
| | - Yi Gao
- Department of Toxicology, School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Feng-Jie Tian
- Department of Toxicology, School of Public Health, Shanxi Medical University, Taiyuan, China
| | - Yu-Lan Qiu
- Department of Toxicology, School of Public Health, Shanxi Medical University, Taiyuan, China.
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Oveissi V, Ram M, Bahramsoltani R, Ebrahimi F, Rahimi R, Naseri R, Belwal T, Devkota HP, Abbasabadi Z, Farzaei MH. Medicinal plants and their isolated phytochemicals for the management of chemotherapy-induced neuropathy: therapeutic targets and clinical perspective. Daru 2019; 27:389-406. [PMID: 30852764 PMCID: PMC6593128 DOI: 10.1007/s40199-019-00255-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Accepted: 02/26/2019] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Chemotherapy, as one of the main approaches of cancer treatment, is accompanied with several adverse effects, including chemotherapy-induced peripheral neuropathy (CIPN). Since current methods to control the condition are not completely effective, new treatment options should be introduced. Medicinal plants can be suitable candidates to be assessed regarding their effects in CIPN. Current paper reviews the available preclinical and clinical studies on the efficacy of herbal medicines in CIPN. METHODS Electronic databases including PubMed, Scopus, and Cochrane library were searched with the keywords "neuropathy" in the title/abstract and "plant", "extract", or "herb" in the whole text. Data were collected from inception until April 2018. RESULTS Plants such as chamomile (Matricaria chamomilla L.), sage (Salvia officinalis L.), cinnamon (Cinnamomum cassia (L.) D. Don), and sweet flag (Acorus calamus L.) as well as phytochemicals like matrine, curcumin, and thioctic acid have demonstrated beneficial effects in animal models of CIPN via prevention of axonal degeneration, decrease in total calcium level, improvement of endogenous antioxidant defense mechanisms such as superoxide dismutase and reduced glutathione, and regulation of neural cell apoptosis, nuclear factor-ĸB, cyclooxygenase-2, and nitric oxide signaling. Also, five clinical trials have evaluated the effect of herbal products in patients with CIPN. CONCLUSIONS There are currently limited clinical evidence on medicinal plants for CIPN which shows the necessity of future mechanistic studies, as well as well-designed clinical trial for further confirmation of the safety and efficacy of herbal medicines in CIPN. Graphical abstract Schematic mechanisms of medicinal plants to prevent chemotherapy-induced neuropathy: NO: nitric oxide, TNF: tumor necrosis factor, PG: prostaglandin, NF-ĸB: nuclear factor kappa B, LPO: lipid peroxidation, ROS: reactive oxygen species, COX: cyclooxygenase, IL: interleukin, ERK: extracellular signal-related kinase, X: inhibition, ↓: induction.
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Affiliation(s)
- Vahideh Oveissi
- Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
- PhytoPharmacology Interest Group (PPIG), Universal Scientific Education and Research Network (USERN), Tehran, Iran
| | - Mahboobe Ram
- Student Research Committee, Faculty of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Roodabeh Bahramsoltani
- Department of Traditional Pharmacy, School of Persian Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Farnaz Ebrahimi
- Pharmacy Students' Research Committee, School of Pharmacy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Roja Rahimi
- Department of Traditional Pharmacy, School of Persian Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Rozita Naseri
- Faculty of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Tarun Belwal
- G. B. Pant National Institute of Himalayan Environment and Sustainable Development, Kosi-Katarmal, Almora, Uttarakhand, 263643, India
| | - Hari Prasad Devkota
- School of Pharmacy, Kumamoto University, 5-1 Oe-honmachi, Chuo ku, Kumamoto, 862-0973, Japan
- Program for Leading Graduate Schools, Health life science: Interdisciplinary and Glocal Oriented (HIGO) Program, Kumamoto University, 5-1 Oe-honmachi, Chuo ku, Kumamoto, 862-0973, Japan
| | - Zahra Abbasabadi
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Hosein Farzaei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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Manda G, Hinescu ME, Neagoe IV, Ferreira LF, Boscencu R, Vasos P, Basaga SH, Cuadrado A. Emerging Therapeutic Targets in Oncologic Photodynamic Therapy. Curr Pharm Des 2019; 24:5268-5295. [DOI: 10.2174/1381612825666190122163832] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 01/18/2019] [Indexed: 12/20/2022]
Abstract
Background:Reactive oxygen species sustain tumorigenesis and cancer progression through deregulated redox signalling which also sensitizes cancer cells to therapy. Photodynamic therapy (PDT) is a promising anti-cancer therapy based on a provoked singlet oxygen burst, exhibiting a better toxicological profile than chemo- and radiotherapy. Important gaps in the knowledge on underlining molecular mechanisms impede on its translation towards clinical applications.Aims and Methods:The main objective of this review is to critically analyse the knowledge lately gained on therapeutic targets related to redox and inflammatory networks underlining PDT and its outcome in terms of cell death and resistance to therapy. Emerging therapeutic targets and pharmaceutical tools will be documented based on the identified molecular background of PDT.Results:Cellular responses and molecular networks in cancer cells exposed to the PDT-triggered singlet oxygen burst and the associated stresses are analysed using a systems medicine approach, addressing both cell death and repair mechanisms. In the context of immunogenic cell death, therapeutic tools for boosting anti-tumor immunity will be outlined. Finally, the transcription factor NRF2, which is a major coordinator of cytoprotective responses, is presented as a promising pharmacologic target for developing co-therapies designed to increase PDT efficacy.Conclusion:There is an urgent need to perform in-depth molecular investigations in the field of PDT and to correlate them with clinical data through a systems medicine approach for highlighting the complex biological signature of PDT. This will definitely guide translation of PDT to clinic and the development of new therapeutic strategies aimed at improving PDT.
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Affiliation(s)
| | | | | | - Luis F.V. Ferreira
- CQFM-Centro de Fisica Molecular and IN-Institute for Nanosciences and Nanotechnologies and IBB-Institute for Bioengineering and Biosciences, Instituto Superior Tecnico, Universidade de Lisboa, Lisbon, Portugal
| | | | - Paul Vasos
- Research Centre of the University of Bucharest, Bucharest, Romania
| | - Selma H. Basaga
- Molecular Biology Genetics & Program, Faculty of Engineering & Natural Sciences, Sabanci University, Istanbul, Turkey
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Zhang M, Li S, Pang K, Zhou Z. Endoplasmic reticulum stress affected chondrocyte apoptosis in femoral head necrosis induced by glucocorticoid in broilers. Poult Sci 2019; 98:1111-1120. [DOI: 10.3382/ps/pey474] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 09/07/2018] [Indexed: 01/18/2023] Open
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Kondo R, Ishino K, Wada R, Takata H, Peng WX, Kudo M, Kure S, Kaneya Y, Taniai N, Yoshida H, Naito Z. Downregulation of protein disulfide‑isomerase A3 expression inhibits cell proliferation and induces apoptosis through STAT3 signaling in hepatocellular carcinoma. Int J Oncol 2019; 54:1409-1421. [PMID: 30720090 DOI: 10.3892/ijo.2019.4710] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 12/14/2018] [Indexed: 11/05/2022] Open
Abstract
Protein disulfide‑isomerase A3 (PDIA3) is a chaperone protein that modulates folding of newly synthesized glycoproteins and responds to endoplasmic reticulum (ER) stress. Previous studies reported that increased expression of PDIA3 in hepatocellular carcinoma (HCC) is a marker for poor prognosis. However, the mechanism remains poorly understood. The aim of the present study, therefore, was to understand the role of PDIA3 in HCC development. First, immunohistochemical staining of tissues from 53 HCC cases revealed that HCC tissues with high PDIA3 expression exhibited a higher proliferation index and contained fewer apoptotic cells than those with low expression. In addition, the knockdown of PDIA3 significantly inhibited cell proliferation and induced apoptosis in HCC cell lines. These results suggest that PDIA3 regulates cell proliferation and apoptosis in HCC. An examination of whether PDIA3 knockdown induced apoptosis through ER stress revealed that PDIA3 knockdown did not increase ER stress marker, 78 kDa glucose‑regulated protein, in HCC cell lines. Furthermore, the association between PDIA3 and the signal transducer and activator of transcription 3 (STAT3) signaling pathway were investigated in vitro and in vivo. Immunofluorescence staining and co‑immunoprecipitation experiments revealed colocalization and binding, respectively, of PDIA3 and STAT3 in HCC cell lines. The knockdown of PDIA3 decreased the levels of phosphorylated STAT3 (P‑STAT3; Tyr705) and downstream proteins of the STAT3 signaling pathway: The anti‑apoptotic proteins (Bcl‑2‑like protein 1, induced myeloid leukemia cell differentiation protein Mcl‑1, survivin and X‑linked inhibitor of apoptosis protein). In addition, PDIA3 knockdown provided little inhibitory effect on cell proliferation in HCC cell lines treated with AG490, a tyrosine‑protein kinase JAK/STAT3 signaling inhibitor. Finally, an association was demonstrated between PDIA3 and P‑STAT3 expression following immunostaining of 35 HCC samples. Together, the present data suggest that PDIA3 promotes HCC progression through the STAT3 signaling pathway.
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Affiliation(s)
- Ryota Kondo
- Department of Integrated Diagnostic Pathology, Nippon Medical School, Tokyo 113‑8602, Japan
| | - Kousuke Ishino
- Department of Integrated Diagnostic Pathology, Nippon Medical School, Tokyo 113‑8602, Japan
| | - Ryuichi Wada
- Department of Integrated Diagnostic Pathology, Nippon Medical School, Tokyo 113‑8602, Japan
| | - Hideyuki Takata
- Department of Gastrointestinal and Hepato‑Biliary‑Pancreatic Surgery, Nippon Medical School, Tokyo 113‑8602, Japan
| | - Wei-Xia Peng
- Department of Integrated Diagnostic Pathology, Nippon Medical School, Tokyo 113‑8602, Japan
| | - Mitsuhiro Kudo
- Department of Integrated Diagnostic Pathology, Nippon Medical School, Tokyo 113‑8602, Japan
| | - Shoko Kure
- Department of Integrated Diagnostic Pathology, Nippon Medical School, Tokyo 113‑8602, Japan
| | - Yohei Kaneya
- Department of Integrated Diagnostic Pathology, Nippon Medical School, Tokyo 113‑8602, Japan
| | - Nobuhiko Taniai
- Department of Gastrointestinal and Hepato‑Biliary‑Pancreatic Surgery, Nippon Medical School, Tokyo 113‑8602, Japan
| | - Hiroshi Yoshida
- Department of Gastrointestinal and Hepato‑Biliary‑Pancreatic Surgery, Nippon Medical School, Tokyo 113‑8602, Japan
| | - Zenya Naito
- Department of Integrated Diagnostic Pathology, Nippon Medical School, Tokyo 113‑8602, Japan
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Xiao Y, Xu S, Zhao S, Liu K, Lu Z, Hou Z. Protective effects of selenium against zearalenone-induced apoptosis in chicken spleen lymphocyte via an endoplasmic reticulum stress signaling pathway. Cell Stress Chaperones 2019; 24:77-89. [PMID: 30374880 PMCID: PMC6363622 DOI: 10.1007/s12192-018-0943-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 09/24/2018] [Accepted: 09/26/2018] [Indexed: 12/16/2022] Open
Abstract
Selenium (Se), an antioxidant agent, provides significant protection from reactive oxygen species (ROS)-induced cell damage in vivo and in vitro. However, it is unclear whether Se can protect against zearalenone (ZEN)-induced apoptosis in chicken spleen lymphocyte. In this study, we investigated the underlying mechanism of the apoptosis induced by ZEN in chicken spleen lymphocyte and further evaluated the protective mechanism of Se on ZEN-induced apoptosis. The results show that ZEN induced an increase in ROS generation and lipid peroxidation, and a decrease in levels of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), and glutathione (GSH). The results of apoptosis morphologically from acridine orange/ethidium bromide (AO/EB) fluorescent staining and flow cytometry analysis show apparent apoptosis in the ZEN-treated group, and was confirmed by the upregulation of caspase-3, -12 and downregulation of Bcl-2. Meanwhile, ZEN activated the endoplasmic reticulum (ER) stress by upregulating ER stress-related molecular sensors (GRP78, ATF6, ATF4, IRE). However, co-treatment with Se effectively blocked ROS generation, improved antioxdative capacity, and reversed apoptosis and ER stress-related genes and protein expression. Taken together, these data suggest that oxidative stress and ER stress play a vital role in ZEN-induced apoptosis, and Se had a significant preventive effect on ZEN-induced apoptosis in chicken spleen lymphocyte via ameliorating the ER stress signaling pathway.
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Affiliation(s)
- Yinxia Xiao
- Department of Veterinary Obstetrics, College of Veterinary Medicine, Northeast Agricultural 8 University, Harbin, 150030, China
| | - Shiwen Xu
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Northeast 11 Agricultural University, Harbin, 150030, China
| | - Shuchen Zhao
- Department of Veterinary Obstetrics, College of Veterinary Medicine, Northeast Agricultural 8 University, Harbin, 150030, China
| | - Kexiang Liu
- Department of Veterinary Obstetrics, College of Veterinary Medicine, Northeast Agricultural 8 University, Harbin, 150030, China
| | - Zhanjun Lu
- Department of Veterinary Obstetrics, College of Veterinary Medicine, Northeast Agricultural 8 University, Harbin, 150030, China
| | - Zhenzhong Hou
- Department of Veterinary Obstetrics, College of Veterinary Medicine, Northeast Agricultural 8 University, Harbin, 150030, China.
- College of Veterinary Medicine, Northeast Agricultural University, Animal Hospital, NO.59 Wood Street, Xiangfang District, Harbin, 150030, China.
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Tominaga T, Sharma I, Fujita Y, Doi T, Wallner AK, Kanwar YS. Myo-inositol oxygenase accentuates renal tubular injury initiated by endoplasmic reticulum stress. Am J Physiol Renal Physiol 2018; 316:F301-F315. [PMID: 30539651 DOI: 10.1152/ajprenal.00534.2018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Besides oxidant stress, endoplasmic reticulum (ER) stress has been implicated in the pathogenesis of various metabolic disorders affecting the kidney. These two forms of stresses are not mutually exclusive to each other and may operate by a feedback loop in worsening the cellular injury. To attest to this contention, studies were performed to assess whether in such a setting, there is worsening of tubulointerstitial injury. We employed tunicamycin as a model of ER stress and used tubular cells and mice overexpressing myo-inositol oxygenase (MIOX), an enzyme involved in glycolytic events with excessive generation of ROS. Concomitant treatment of tunicamycin and transfection of cells with MIOX-pcDNA led to a marked generation of ROS, which was reduced by MIOX-siRNA. Likewise, an accentuated expression of ER stress sensors, GRP78, XBP1, and CHOP, was observed, which was reduced with MIOX-siRNA. These sensors were markedly elevated in MIOX-TG mice compared with WT treated with tunicamycin. This was accompanied with marked deterioration of tubular morphology, along with impairment of renal functions. Interestingly, minimal damage and elevation of ER stressors was observed in MIOX-KO mice. Downstream events that were more adversely affected in MIOX-TG mice included accentuated expression of proapoptogenic proteins, proinflammatory cytokines, and extracellular matrix constituents, although expression of these molecules was unaffected in MIOX-KO mice. Also, their tunicamycin-induced accentuated expression in tubular cells was notably reduced with MIOX-siRNA. These studies suggest that the biology of MIOX-induced oxidant stress and tunicamycin-induced ER stress are interlinked, and both of the events may feed into each other to amplify the tubulointerstitial injury.
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Affiliation(s)
- Tatsuya Tominaga
- Departments of Pathology and Medicine, Northwestern University , Chicago, Illinois
| | - Isha Sharma
- Departments of Pathology and Medicine, Northwestern University , Chicago, Illinois
| | - Yui Fujita
- Department of Nephrology, Tokushima University , Tokushima , Japan
| | - Toshio Doi
- Department of Nephrology, Tokushima University , Tokushima , Japan
| | - Aryana K Wallner
- Departments of Pathology and Medicine, Northwestern University , Chicago, Illinois
| | - Yashpal S Kanwar
- Departments of Pathology and Medicine, Northwestern University , Chicago, Illinois
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Yaribeygi H, Farrokhi FR, Butler AE, Sahebkar A. Insulin resistance: Review of the underlying molecular mechanisms. J Cell Physiol 2018; 234:8152-8161. [PMID: 30317615 DOI: 10.1002/jcp.27603] [Citation(s) in RCA: 469] [Impact Index Per Article: 78.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 09/19/2018] [Indexed: 12/13/2022]
Abstract
Most human cells utilize glucose as the primary substrate, cellular uptake requiring insulin. Insulin signaling is therefore critical for these tissues. However, decrease in insulin sensitivity due to the disruption of various molecular pathways causes insulin resistance (IR). IR underpins many metabolic disorders such as type 2 diabetes and metabolic syndrome, impairments in insulin signaling disrupting entry of glucose into the adipocytes, and skeletal muscle cells. Although the exact underlying cause of IR has not been fully elucidated, a number of major mechanisms, including oxidative stress, inflammation, insulin receptor mutations, endoplasmic reticulum stress, and mitochondrial dysfunction have been suggested. In this review, we consider the role these cellular mechanisms play in the development of IR.
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Affiliation(s)
- Habib Yaribeygi
- Chronic Kidney Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Farin Rashid Farrokhi
- Chronic Kidney Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Alexandra E Butler
- Diabetes Research Center, Qatar Biomedical Research Institute, Doha, Qatar
| | - Amirhossein Sahebkar
- Neurogenic Inflammation Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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GanDouLing combined with Penicillamine improves cerebrovascular injury via PERK/eIF2α/CHOP endoplasmic reticulum stress pathway in the mouse model of Wilson's disease. Biosci Rep 2018; 38:BSR20180800. [PMID: 30181379 PMCID: PMC6146297 DOI: 10.1042/bsr20180800] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 07/31/2018] [Accepted: 08/20/2018] [Indexed: 01/24/2023] Open
Abstract
We aim to investigate the function and mechanism of GanDouLing combinated with Penicillamine on cerebrovascular injury in Wilson’s disease (WD). ELISA was performed to analyze the expression of vascular injury factors. Pathological changes of cerebral vessels were observed by HE stain. Immunohistochemistry assays were performed to analyze the expression of ICAM-1, VCAM-1, and GRP78. Western blotting was measured to analyze the expression of caspase-3, caspase-12, PERK, eIF2α, and CHOP. Apoptosis was detected with TUNEL assay. The expression of vascular injury factors and ICAM-1, VCAM-1 was significantly increased by WD and markedly decreased in GanDouLing-Penicillamine group. The expression of caspase-3, caspase-12, PERK, eIF2α, and CHOP were obviously expressed in Wilson group, GanDouLing-Penicillamine suppressed apoptosis and endoplasmic reticulum (ER) stress. Our findings suggested that GanDouLing-Penicillamine improved cerebrovascular injury through PERK/eIF2α/CHOP ER stress pathway in the mouse model of WD.
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Li LJ, Chai Y, Guo XJ, Chu SL, Zhang LS. Effects of endoplasmic reticulum stress on autophagy and apoptosis of human leukemia cells via inhibition of the PI3K/AKT/mTOR signaling pathway. Mol Med Rep 2018; 17:7886-7892. [PMID: 29620275 DOI: 10.3892/mmr.2018.8840] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 12/18/2017] [Indexed: 11/05/2022] Open
Abstract
The present study aimed to explore the regulatory effects of endoplasmic reticulum stress (ERS) on the phosphoinositide 3‑kinase (PI3K)/AKT serine/threonine kinase 1 (AKT)/mammalian target of rapamycin (mTOR) signaling pathway, and its subsequent effects on autophagy and apoptosis of human leukemia cells. Human leukemia cells were cultured and treated with various concentrations of tunicamycin for 0, 24, 48, 72 and 90 h. Subsequently, human leukemia cells were assigned into the ER activation group, which was treated with 100 ng/ml tunicamycin, the ER activation + TO901317 (PI3K inhibitor) group, and the control group. An MTT assay was conducted to detect cell proliferation. In addition, a monodansylcadaverine (MDC) assay was used to detect the formation of autophagosomes and Annexin V‑fluorescein isothiocyanate/propidium iodide double staining was used to examine cell apoptosis. Western blotting was performed to detect the expression levels of 78‑kDa glucose‑regulated protein (GRP78), phosphorylated (p)‑protein kinase R‑like endoplasmic reticulum kinase (PERK), p‑α subunit of eukaryotic initiation factor 2 (eIF2α), microtubule‑associated protein 1A/1B‑light chain 3 (LC3), caspase‑3, CCAAT‑enhancer‑binding protein homologous protein (CHOP), PI3K, AKT and mTOR. Treatment with 100 ng/ml tunicamycin for 72 h was considered the optimal condition for further experiments. Compared with in cells prior to treatment, human leukemia cells treated with tunicamycin exhibited increased expression of p‑PERK, p‑eIF2α and GRP78 after 72 h (P<0.05). In addition, the expression levels of mTOR, AKT and PI3K were decreased in the ER activation group compared with in the control and ER activation + TO901317 groups (P<0.05). Compared with in the control group, cell proliferation was inhibited and MDC fluorescence intensity was increased in the ER activation group (P<0.05). Furthermore, compared with in the control and ER activation + TO901317 groups, western blotting indicated that the expression levels of LC3‑II were increased in the ER activation group (P<0.05). The apoptotic rate was also higher in the ER activation group compared with in the control group (P<0.05), and caspase‑3 and CHOP expression was elevated in the ER activation group (P<0.05). These findings indicated that ERS may induce autophagy and apoptosis of human leukemia cells via inhibiting the PI3K/AKT/mTOR signaling pathway.
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Affiliation(s)
- Li-Juan Li
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Ye Chai
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Xiao-Jia Guo
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Song-Lin Chu
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
| | - Lian-Sheng Zhang
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou, Gansu 730000, P.R. China
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Liu W, Zhao Z, Na Y, Meng C, Wang J, Bai R. Dexamethasone-induced production of reactive oxygen species promotes apoptosis via endoplasmic reticulum stress and autophagy in MC3T3-E1 cells. Int J Mol Med 2018; 41:2028-2036. [PMID: 29393368 PMCID: PMC5810234 DOI: 10.3892/ijmm.2018.3412] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 01/05/2018] [Indexed: 02/06/2023] Open
Abstract
Apoptosis of osteoblasts, triggered by prolonged or excessive use of glucocorticoids (GCs), has been identified as a dominant contributor to the development of osteoporosis and osteonecrosis. However, the molecular mechanisms underlying GC‑induced apoptosis are multifaceted and remain to be fully elucidated. The present study aimed to explore the correlation between dexamethasone (DEX)‑induced reactive oxygen species (ROS), autophagy and apoptosis in MC3T3‑E1 osteoblast‑like cells. Cell viability was assessed using a Cell Counting Kit‑8 assay, and flow cytometry was performed to assess cellular apoptosis, cell cycle and ROS production. Immunofluorescence and western blot analysis were respectively used to detect autophagic vacuoles and the expression of proteins, including cyclin D kinase (CDK)2, poly[ADP ribose] polymerase, caspase‑3, activating transcription factor (ATF)4, CCAAT/enhancer‑binding protein homologous protein (CHOP), Beclin1, microtubule‑associated proteins 1A/1B light chain (LC)3B and P62. It was revealed that DEX not only reduced cell viability, but also promoted apoptosis via the activation of endoplasmic reticulum (ER) stress. In addition, DEX induced cell cycle arrest at G0/G1 phase via inhibition of the expression of CDK2, and the production of ROS was activated. Of note, the DEX‑mediated changes in viability and apoptosis were attenuated in MC3T3‑E1 cells after treatment with 3‑methyladenine, which is an autophagy inhibitor. Treatment with the antioxidant N‑acetylcysteine abolished the effect of DEX on the proliferation, apoptosis, ER stress and autophagy of MC3T3‑E1 cells. In conclusion, the present results indicated that DEX promoted the production of ROS, which enhanced apoptosis through activation of autophagy and ER stress in MC3T3-E1 cells.
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Affiliation(s)
| | | | - Yuyan Na
- Departments of Pediatric Orthopedics
| | | | - Jianzhong Wang
- Orthopedics and Trauma, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia 010030, P.R. China
| | - Rui Bai
- Departments of Pediatric Orthopedics
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Renu K, Madhyastha H, Madhyastha R, Maruyama M, Arunachlam S, V.G. A. Role of arsenic exposure in adipose tissue dysfunction and its possible implication in diabetes pathophysiology. Toxicol Lett 2018; 284:86-95. [DOI: 10.1016/j.toxlet.2017.11.032] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 11/22/2017] [Accepted: 11/27/2017] [Indexed: 02/08/2023]
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47
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Tang YH, Yue ZS, Zheng WJ, Shen HF, Zeng LR, Hu ZQ, Xiong ZF. 4-Phenylbutyric acid presents therapeutic effect on osteoarthritis via inhibiting cell apoptosis and inflammatory response induced by endoplasmic reticulum stress. Biotechnol Appl Biochem 2018; 65:540-546. [PMID: 29327364 DOI: 10.1002/bab.1642] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 01/06/2018] [Indexed: 12/28/2022]
Abstract
Osteoarthritis (OA) is a common bone and joint disease with a wild range of risk factors, which is associated with endoplasmic reticulum (ER) stress. The aim of our study was to discuss the possible mechanism of ER stress associated with OA in vivo and explore novel therapeutic method against OA. OA-induced damages in cartilage tissues were evaluated by HE, Safranin O/fast green, and TUNEL staining. The inflammatory factors concentration and the expression of FAP, MMP2, MMP9, Bax, Bcl-2, CHOP, and GRP78 were evaluated by ELISA, real-time PCR, and Western blot analyses. As results, 4-phenylbutyric acid (4-PBA)-treated OA cartilage tissues presented alleviated tissue damage with less apoptotic cells and cytokine production in comparison with advanced-OA tissues. Downregulation of Bax/Bcl-2, CHOP, GRP78, inflammatory factors, and reactive oxygen species generation, and the increase of MMP level detected after 4-PBA treatment indicated an inhibitory effect of 4-PBA on cell apoptosis, inflammatory response, and ER stress in OA. In conclusion, we indicate that ER stress causes cell apoptosis and inflammatory response, resulting in the tissue damage within OA. At the same time, 4-PBA exhibited protective effect on cartilage cells against OA through the inhibition of ER stress.
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Affiliation(s)
- Yang-Hua Tang
- Department of Orthopedics, Xiaoshan Traditional Chinese Medical Hospital, Hangzhou, 311201, Zhejiang, People's Republic of China
| | - Zhen-Shuang Yue
- Department of Orthopedics, Xiaoshan Traditional Chinese Medical Hospital, Hangzhou, 311201, Zhejiang, People's Republic of China
| | - Wen-Jie Zheng
- Department of Orthopedics, Xiaoshan Traditional Chinese Medical Hospital, Hangzhou, 311201, Zhejiang, People's Republic of China
| | - Hong-Fei Shen
- Department of Orthopedics, Xiaoshan Traditional Chinese Medical Hospital, Hangzhou, 311201, Zhejiang, People's Republic of China
| | - Lin-Ru Zeng
- Department of Orthopedics, Xiaoshan Traditional Chinese Medical Hospital, Hangzhou, 311201, Zhejiang, People's Republic of China
| | - Zhong-Qing Hu
- Department of Orthopedics, Xiaoshan Traditional Chinese Medical Hospital, Hangzhou, 311201, Zhejiang, People's Republic of China
| | - Zhen-Fei Xiong
- Department of Orthopedics, Xiaoshan Traditional Chinese Medical Hospital, Hangzhou, 311201, Zhejiang, People's Republic of China
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48
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Yue X, Huan P, Hu Y, Liu B. Integrated transcriptomic and proteomic analyses reveal potential mechanisms linking thermal stress and depressed disease resistance in the turbot Scophthalmus maximus. Sci Rep 2018; 8:1896. [PMID: 29382883 PMCID: PMC5790011 DOI: 10.1038/s41598-018-20065-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 01/12/2018] [Indexed: 02/07/2023] Open
Abstract
A worldwide increase in the reports of diseases affecting marine organisms has paralleled the climate warming over the past few decades. In this study, we applied omics to explore the mechanisms underlying thermo-linked epizootics, by comparing both the transcriptome- and proteome-wide response of turbots to a mimic pathogen (poly I:C) between high temperature and low temperature using a time-course approach. Our results showed that myeloperoxidase (MPO) and insulin were differentially expressed transcripts shared by all five time-points post poly I:C-injection between high and low temperature and also had a consistent expression trend as differentially expressed proteins at 24 h post injection. Combined with other data, it was suggested that the elevated temperature enhanced neutrophil-mediated immunity and the resultant MPO-mediated oxidative stress, which lasted for at least 5 days. The contents of malondialdehyde and protein carbonyls, markers of oxidative damage for lipids and proteins, respectively, were compared between different temperature groups, and the results further implied the emergence of oxidative damage under high temperature. It was also suggested that metabolism disorder likely occur considering the sustained expression changes of insulin. Hence, prolonged MPO-mediated oxidative stress and metabolic disorder might be involved in the thermo-linked epizootic.
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Affiliation(s)
- Xin Yue
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China
| | - Pin Huan
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China
| | - Yonghua Hu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China
| | - Baozhong Liu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China. .,Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, 266000, China.
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Pan L, Zhang Y, Chen N, Yang L. Icariin Regulates Cellular Functions and Gene Expression of Osteoarthritis Patient-Derived Human Fibroblast-Like Synoviocytes. Int J Mol Sci 2017; 18:ijms18122656. [PMID: 29292760 PMCID: PMC5751258 DOI: 10.3390/ijms18122656] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 11/28/2017] [Accepted: 12/04/2017] [Indexed: 01/07/2023] Open
Abstract
Synovial inflammation plays an important role in the pathogenesis and progress of osteoarthritis (OA). There is an urgent need to find safe and effective drugs that can reduce the inflammation and regulate the pathogenesis of cytokines of the OA disease. Here, we investigated the effect of icariin, the major pharmacological active component of herb Epimedium on human osteoarthritis fibroblast-like synoviocytes (OA–FLSs). The OA–FLSs were isolated from patients with osteoarthritis and cultured in vitro with different concentrations of icariin. Then, cell viability, proliferation, and migration were investigated; MMP14, GRP78, and IL-1β gene expression levels were detected via qRT-PCR. Icariin showed low cytotoxicity to OA–FLSs at a concentration of under 10 μM and decreased the proliferation of the cells at concentrations of 1 and 10 μM. Icariin inhibited cell migration with concentrations ranging from 0.1 to 1 μM. Also, the expression of three cytokines for the pathogenesis of OA which include IL-1β, MMP14 and GRP78 was decreased by the various concentrations of icariin. These preliminary results imply that icariin might be an effective compound for the treatment of OA disease.
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Affiliation(s)
- Lianhong Pan
- Department of Basic Medicine, Chongqing Three Gorges Medical College, Chongqing 404000, China.
| | - Yonghui Zhang
- Department of Basic Medicine, Chongqing Three Gorges Medical College, Chongqing 404000, China.
| | - Na Chen
- Digital Medicine Institute, Biomedical Engineering College, Third Military Medical University, Chongqing 400038, China.
| | - Li Yang
- National Innovation and Attracting Talents "111" Base, Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, China.
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Luteolin Treatment Protects against Renal Ischemia-Reperfusion Injury in Rats. Mediators Inflamm 2017; 2017:9783893. [PMID: 29358852 PMCID: PMC5735687 DOI: 10.1155/2017/9783893] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 09/28/2017] [Accepted: 10/11/2017] [Indexed: 01/07/2023] Open
Abstract
Renal ischemia-reperfusion (I/R) injury is a common but severe scientific problem. Luteolin has great anti-inflammatory and antioxidant effects. In this study, we studied the effect of luteolin on renal I/R injury in rats. Intragastric administration of luteolin or saline was performed in Sprague-Dawley rats before (40 mg/kg for three days) and after (one day) renal I/R modeling. Kidney and blood samples were harvested to detect the severity of renal injury 24 hours after operation. The results showed that luteolin-treated rats exhibited milder histomorphological changes with lower scores of renal histological lesions; lower blood urea nitrogen and creatinine levels; lower renal malondialdehyde (MDA), 8-oxo-deoxyguanosine (8-OHdG), and myeloperoxidase (MPO) levels; and higher superoxide dismutase (SOD) and catalase (CAT) activities in the kidney. Luteolin attenuated the increased levels of serum and renal tumor necrosis factor (TNF)-α, interleukin (IL)-1β, and IL-6, renal high mobility group box-1 (HMGB1), and nuclear factor kappa β (NF-κB) expression levels in I/R rats. Furthermore, luteolin treatment significantly reduced renal cell apoptosis and endoplasmic reticulum (ER) stress caused by renal I/R injury. In conclusion, luteolin improved renal function in I/R rats by reducing oxidative stress, neutrophil infiltration, inflammation, renal cell apoptosis, and expression of HMGB1 and NF-κB, and ER stress.
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