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Cheng W, Tan L, Yu S, Song J, Li Z, Peng X, Wei Q, He Z, Zhang W, Yang X. Geniposide reduced oxidative stress-induced apoptosis in HK-2 cell through PI3K/AKT3/FOXO1 by m6A modification. Int Immunopharmacol 2024; 131:111820. [PMID: 38508092 DOI: 10.1016/j.intimp.2024.111820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2024] [Revised: 02/28/2024] [Accepted: 03/05/2024] [Indexed: 03/22/2024]
Abstract
Exogenous hydrogen peroxide (H2O2) may generate excessive oxidative stress, inducing renal cell apoptosis related with kidney dysfunction. Geniposide (GP) belongs to the iridoid compound with anti-inflammatory, antioxidant and anti-apoptotic effects. This study aimed to observe the intervention effect of GP on H2O2-induced apoptosis in human kidney-2 (HK-2) cells and to explore its potential mechanism in relation to N6-methyladenosine (m6A) RNA methylation. Cell viability, apotosis rate and cell cycle were tested separately after different treatments. The mRNA and protein levels of m6A related enzymes and phosphoinositide 3-kinase (PI3K)/a serine/threonine-specific protein kinase 3 (AKT3)/forkhead boxo 1 (FOXO1) and superoxide dismutase 2 (SOD2) were detected by reverse transcription-quantitative real-time PCR (RT-qPCR) and Western blot. The whole m6A methyltransferase activity and the m6A content were measured by ELISA-like colorimetric methods. The changes of m6A methylation levels of PI3K/AKT3/FOXO1 and SOD2 were determined by methylated RNA immunoprecipitation (MeRIP)-qPCR. Multiple comparisons were performed by ANOVA with Turkey's post hoc test. Exposed to 400 μmol/L H2O2, cells were arrested in G1 phase and the apoptosis rate increased, which were significantly alleviated by GP. Compared with the H2O2 apoptosis group, both the whole m6A RNA methyltransferase activity and the m6A contents were increased due to GP intervention. Besides, the SOD2 protein was increased, while PI3K and FOXO1 decreased. The m6A methylation level of AKT3 was negatively correlated with its protein level. Taken together, GP affects the global m6A methylation microenvironment and regulates the expression of PI3K/AKT3/FOXO1 signaling pathway via m6A modification, alleviating cell cycle arrest and apoptosis caused by oxidative stress in HK-2 cells with a good application prospect.
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Affiliation(s)
- Wenli Cheng
- Food Safety and Health Research Center, NMPA Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, PR China; Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, PR China
| | - Luyi Tan
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, PR China
| | - Susu Yu
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, PR China
| | - Jia Song
- Food Safety and Health Research Center, NMPA Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, PR China
| | - Ziyin Li
- Food Safety and Health Research Center, NMPA Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, PR China
| | - Xinyue Peng
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, PR China
| | - Qinzhi Wei
- Food Safety and Health Research Center, NMPA Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, PR China
| | - Zhini He
- Food Safety and Health Research Center, NMPA Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, PR China
| | - Wenjuan Zhang
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, PR China.
| | - Xingfen Yang
- Food Safety and Health Research Center, NMPA Key Laboratory for Safety Evaluation of Cosmetics, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, PR China.
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Zhao G, Tang Y, Dan R, Xie M, Zhang T, Li P, He F, Li N, Peng Y. Pasteurella multocida activates apoptosis via the FAK-AKT-FOXO1 axis to cause pulmonary integrity loss, bacteremia, and eventually a cytokine storm. Vet Res 2024; 55:46. [PMID: 38589976 PMCID: PMC11003142 DOI: 10.1186/s13567-024-01298-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 03/19/2024] [Indexed: 04/10/2024] Open
Abstract
Pasteurella multocida is an important zoonotic respiratory pathogen capable of infecting a diverse range of hosts, including humans, farm animals, and wild animals. However, the precise mechanisms by which P. multocida compromises the pulmonary integrity of mammals and subsequently induces systemic infection remain largely unexplored. In this study, based on mouse and rabbit models, we found that P. multocida causes not only lung damage but also bacteremia due to the loss of lung integrity. Furthermore, we demonstrated that bacteremia is an important aspect of P. multocida pathogenesis, as evidenced by the observed multiorgan damage and systemic inflammation, and ultimately found that this systemic infection leads to a cytokine storm that can be mitigated by IL-6-neutralizing antibodies. As a result, we divided the pathogenesis of P. multocida into two phases: the pulmonary infection phase and the systemic infection phase. Based on unbiased RNA-seq data, we discovered that P. multocida-induced apoptosis leads to the loss of pulmonary epithelial integrity. These findings have been validated in both TC-1 murine lung epithelial cells and the lungs of model mice. Conversely, the administration of Ac-DEVD-CHO, an apoptosis inhibitor, effectively restored pulmonary epithelial integrity, significantly mitigated lung damage, inhibited bacteremia, attenuated the cytokine storm, and reduced mortality in mouse models. At the molecular level, we demonstrated that the FAK-AKT-FOXO1 axis is involved in P. multocida-induced lung epithelial cell apoptosis in both cells and animals. Thus, our research provides crucial information with regard to the pathogenesis of P. multocida as well as potential treatment options for this and other respiratory bacterial diseases.
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Affiliation(s)
- Guangfu Zhao
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Yunhan Tang
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Ruitong Dan
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Muhan Xie
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Tianci Zhang
- Department of Endocrinology and Metabolism, Center for Diabetes and Metabolism Research, West China Hospital, Sichuan University, Chengdu, China
| | - Pan Li
- Department of Environment and Safety Engineering, Taiyuan Institute of Technology, Taiyuan, China
| | - Fang He
- College of Veterinary Medicine, Southwest University, Chongqing, China
| | - Nengzhang Li
- College of Veterinary Medicine, Southwest University, Chongqing, China.
| | - Yuanyi Peng
- College of Veterinary Medicine, Southwest University, Chongqing, China.
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Chen J, Mao M, Ma Z, Liu J, Jiang M, Chen G, Xu Y. Homeobox B2 promotes malignant behavior and contributes to the radioresistance of nasopharyngeal carcinoma by regulating forkhead box protein O1. Int J Med Sci 2024; 21:837-847. [PMID: 38617001 PMCID: PMC11008478 DOI: 10.7150/ijms.93128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 03/12/2024] [Indexed: 04/16/2024] Open
Abstract
Background: Nasopharyngeal carcinoma (NPC) is an epithelial tumor of the head and neck with heterogeneous racial and geographical distributions. Homeobox B2 (HOXB2) is a tumor promoter in many cancers. However, the biological role of HOXB2 in NPC has not been elucidated. Methods: Bioinformatics analysis was performed to identify the differentially expressed genes (DEGs) between samples of patients with radiosensitive and radioresistant NPC. qRT-PCR, western blotting and immunohistochemistry were used to detect the expression levels of the corresponding mRNA and proteins. Cell viability was detected by CCK-8 assay and colony-forming capability was evaluated using colony formation assays. Further, migration and invasion abilities were examined using wound-healing and transwell chamber assays, respectively. Cellular apoptosis after irradiation was assessed using flow cytometry and terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) staining. Results: HOXB2 was identified as a potential regulator of radioresistance in NPC. Our in vitro results indicate that HOXB2 overexpression (HOXB2-OE) promoted malignant behaviors including invasion, migration, proliferation, and inhibited the irradiation-induced apoptosis of NPC cells. Consistent with these results, HOXB2 knockdown (HOXB2-sh) exhibited the opposite trends in these biological activities. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that the DEGs were enriched in the FOXO signaling pathway. Mechanistically, western blotting showed that HOXB2-OE inhibited forkhead box protein O1 (FOXO1) expression in NPC cells. Thereafter, we transferred the FOXO1-OE plasmid to HOXB2-OE NPC cells and found that overexpression of FOXO1 reversed cell proliferation, migration, invasion, and radioresistance profiles promoted by HOXB2 overexpression. Conclusion: Our findings showed that HOXB2 acts as a tumor promoter in NPC, activating malignant behaviors and radioresistance of tumors via FOXO1 regulation. Moreover, the inactivation of HOXB2 or activation of FOXO1 are potential strategies to inhibit tumor progression and overcome radioresistance in NPC.
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Affiliation(s)
- Jinhai Chen
- Department of Otolaryngology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Min Mao
- Department of Otolaryngology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Zhaoen Ma
- Department of Otolaryngology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Jie Liu
- Department of Anesthesiology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Minqiong Jiang
- Department of Nursing, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Guangui Chen
- Department of Otolaryngology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yali Xu
- Department of Otolaryngology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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Xu Z, Zhang S, Zhang Y, Zhou D, Ming R, Song L. [The mechanism of Xuebijing injection in preventing and treating lung injury induced by cardiopulmonary bypass by regulating the apoptosis of alveolar polymorphonuclear neutrophil]. Zhonghua Wei Zhong Bing Ji Jiu Yi Xue 2024; 36:166-171. [PMID: 38442933 DOI: 10.3760/cma.j.cn121430-20230128-00038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
OBJECTIVE To investigate the protective effect of Xuebijing injection on acute lung injury (ALI) associated with cardiopulmonary bypass (CPB) by regulating the apoptosis of polymorphonuclear neutrophils (PMN). METHODS Thirty male Sprague-Dawley (SD) rats were randomly divided into sham operation group (Sham group), CPB model group (CPB group) and Xuebijing pretreatment group (XBJ group) according to the random number table method, with 10 rats in each group. Rats in the CPB group and XBJ group undergoing CPB procedures for 60 minutes. Rats in the Sham group did not undergo CPB. Rats in the XBJ group received intraperitoneal injection of 4 mL/kg Xuebijing injection 2 hours before CPB. Rats in the Sham group and CPB group were injected with an equal amount of normal saline. 4 hours after CPB, arterial blood was collected for blood gas analysis to calculate respiratory index (RI), and lung tissue of rats was collected for determination of lung index (LI) and pulmonary water containing rate. PMN in bronchoalveolar lavage fluid (BALF) were collected and the activity of caspase-3 was detected. The apoptosis rate was detected by flow cytometry. The expressions of microRNA-142-3p (miR-142-3p) and FoxO1 mRNA were detected by real-time fluorescence quantitative polymerase chain reaction (RT-qPCR). The protein expression of FoxO1 was detected by Western blotting. In addition, HL-60 cells were divided into control oligonucleotide transfection group, miR-142-3p mimics transfection group, and miR-142-3p inhibitor transfection group. After 48 hours of transfection, the activity of miR-142-3p binding to FoxO1 was detected using dual luciferase reporter genes. RESULTS Compared with Sham group, RI, LI and pulmonary water containing rate were significantly increased in CPB group. The caspase-3 activity and apoptosis rate of PMN obtained from BALF were significantly decreased, the expression of miR-142-3p was decreased, and the expression of FoxO1 protein was increased. However, compared with CPB group, RI, LI and pulmonary water containing rate were significantly decreased in XBJ group [RI: 0.281±0.066 vs. 0.379±0.071, LI: 4.50±0.26 vs. 5.71±0.42, pulmonary water containing rate: (80.31±32.50)% vs. (84.59±3.41)%, all P < 0.01]. The caspase-3 activity and apoptosis rate of PMN obtained from BALF were significantly increased [caspase-3 activity: 0.350±0.021 vs. 0.210±0.014, apoptosis rate: (15.490±1.382)% vs. (8.700±0.701)%, both P < 0.01], the expression of miR-142-3p was significantly up-regulated (2-ΔΔCt: 2.61±0.17 vs. 0.62±0.05, P < 0.01), and the protein expression of FoxO1 was decreased [FoxO1/GAPDH (relative expression level): 0.81±0.04 vs. 1.22±0.06, P < 0.01]. However, there was no statistically significant difference in FoxO1 mRNA expression among the three groups. The bioinformatics analysis results showed that miR-142-3p can bind to the FoxO1 3'untranslated region (3'UTR). In HL-60 cells, compared with control oligonucleotide transfection group, the transfection of miR-142-3p mimics could reduce the expression of FoxO1 protein [FoxO1/GAPDH (relative expression level): 0.48±0.06 vs. 1.00±0.05, P < 0.01], however, the transfection of miR-142-3p inhibitor increased the expression of FoxO1 protein [FoxO1/GAPDH (relative expression level): 1.37±0.21 vs. 1.00±0.05, P < 0.05]. But, transfection with miR-142-3p mimics or inhibitor had no effect on FoxO1 mRNA expression. The luciferase reporter gene showed that miR-142-3p could bind to the FoxO1 3'UTR to inhibit FoxO1 expression. CONCLUSIONS Xuebijing injection may promote the apoptosis of pulmonary alveolar PMN through the miR-142-3p/FoxO1 axis, and play a role in the prevention and treatment of CPB-induced ALI.
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Affiliation(s)
- Zhaojun Xu
- Department of Cardiothoracic Surgery, the First Affiliated Hospital, Hunan University of Chinese Medicine, Changsha 410007, Hunan, China
| | - Shengkang Zhang
- Department of Cardiothoracic Surgery, the First Affiliated Hospital, Hunan University of Chinese Medicine, Changsha 410007, Hunan, China
| | - Yi Zhang
- Department of Cardiothoracic Surgery, the First Affiliated Hospital, Hunan University of Chinese Medicine, Changsha 410007, Hunan, China
| | - Daiyong Zhou
- Department of Cardiothoracic Surgery, the First Affiliated Hospital, Hunan University of Chinese Medicine, Changsha 410007, Hunan, China
| | - Runyu Ming
- Department of Cardiothoracic Surgery, the First Affiliated Hospital, Hunan University of Chinese Medicine, Changsha 410007, Hunan, China
| | - Lan Song
- Department of Biochemistry and Molecular Biology, Hunan University of Chinese Medicine, Changsha 410208, Hunan, China. Corresponding author: Song Lan,
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Hu W, Xie N, Pan M, Zhang Q, Zhang H, Wang F, Qu F. Chinese herbal medicine alleviates autophagy and apoptosis in ovarian granulosa cells induced by testosterone through PI3K/AKT1/FOXO1 pathway. J Ethnopharmacol 2024; 318:117025. [PMID: 37567425 DOI: 10.1016/j.jep.2023.117025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 08/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Polycystic ovary syndrome (PCOS) is a common gynecological endocrine and metabolic disorder. Chinese herbal medicine has some advantages in the treatment of PCOS with its unique theoretical system and rich clinical practice experiences. AIM OF THE STUDY The present study was to investigate the potential mechanisms of Bu-Shen-Jian-Pi Formula (BSJPF) on the treatment of PCOS. MATERIAL AND METHODS The combination of ultra-performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC/Q-TOF-MS/MS) rapid analysis, network pharmacology, molecular docking analysis and bio-experiments were firstly conducted to identify the main effective components of BSJPF, and to predict the potential mechanisms. The ovarian granulosa cell line (KGN) was treated with testosterone to construct the PCOS model in vitro, and the cells were further treated with the lyophilized powder of BSJPF. The levels of proliferation, autophagy and apoptosis were detected to explore the mechanisms of BSJPF on treating PCOS. RESULTS Firstly, thirty-six active compounds were identified in BSJPF and thirty-one potential targets on PCOS were found. Then, PI3K and PDK1 were verified to have good binding activity with the active compounds through molecular docking analysis. In bio-experiments, BSJPF significantly alleviated the arrested proliferation of KGN cells in G0/G1 phase and reduced the active levels of autophagy and apoptosis of KGN cells induced by testosterone. Additionally, the inhibition of autophagy diminished apoptosis, while the repression apoptosis enhanced autophagy. Finally, BSJPF significantly decreased the FOXO1 expression levels induced by testosterone, especially for nuclear FOXO1, and significantly activated the PI3K/AKT pathway. CONCLUSIONS BSJPF significantly alleviated the activated autophagy and apoptosis in KGN induced by testosterone through PI3K/AKT1/FOXO1pathway, which is an effective treatment for PCOS.
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Affiliation(s)
- Weihuan Hu
- Women's Hospital, School of Medicine, Zhejiang University, 310006, Hangzhou, Zhejiang, China
| | - Ningning Xie
- Women's Hospital, School of Medicine, Zhejiang University, 310006, Hangzhou, Zhejiang, China
| | - Manman Pan
- Women's Hospital, School of Medicine, Zhejiang University, 310006, Hangzhou, Zhejiang, China
| | - Qing Zhang
- Women's Hospital, School of Medicine, Zhejiang University, 310006, Hangzhou, Zhejiang, China
| | - Hui Zhang
- Zhejiang Vocational College of Special Education, Hangzhou, 310023, China
| | - Fangfang Wang
- Women's Hospital, School of Medicine, Zhejiang University, 310006, Hangzhou, Zhejiang, China
| | - Fan Qu
- Women's Hospital, School of Medicine, Zhejiang University, 310006, Hangzhou, Zhejiang, China.
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赵 刚, 李 华, 张 鸿, 肖 克, 杨 辉, 李 子, 傅 崇. [m 6A methylase WTAP participates in renal ischemia-reperfusion injury by regulating FOXO1 expression]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:2035-2042. [PMID: 38189389 PMCID: PMC10774094 DOI: 10.12122/j.issn.1673-4254.2023.12.07] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Indexed: 01/09/2024]
Abstract
OBJECTIVE To investigate the expression of WTAP, a m6A methylase, in a mouse model of renal ischemia-reperfusion (I/R) injury and the effect of WTAP knockdown on biological behavior of renal tubular epithelial cells exposed to I/R injury. METHODS Sixteen C57BL/6 mice with renal I/R injury or sham operation (n=8) were examined for blood urea nitrogen (BUN) and creatinine (Scr) levels to assess renal function, and renal pathologies were observed with HE staining. The expressions of WTAP and FOXO1 proteins in the kidneys of the mice were detected using immunohistochemistry. Human renal tubular epithelial cells (HK-2) were transfected with si-WTAP or si-NC followed by hypoxia-reoxygenation (H/R) exposure, Protein and mRNA expression were assessed by Western blot and qRT-PCR, and changes and changes in cell viability and apoptosis were assessed using CCK8 assay and TUNEL staining, respectively; LDH release level and caspase-3 activity of the cells were measured using commercial assay kits. FOXO1 m6A modification sites were predicted using SRAMP website (http://www.cuilab.cn/sramp/), and the interaction between WTAP and FOXO1 mRNA was analyzed with RIP experiment; the level of FOXO1 modified by m6A was detected by MeRIP-qPCR. RESULTS Compared with sham-operated mice, the mice with renal I/R injury showed significantly increased Scr and BUN levels (P < 0.001) and renal expressions of WTAP mRNA and protein (P < 0.001). In cultured HK-2 cells, H/R exposure significantly decreased the cell viability (P < 0.001) and increased cellular LDH release (P < 0.001) and expressions of WTAP mRNA and protein (P < 0.001). WTAP knockdown obviously reduced the cell damage induced by I/R injury and significantly decreased the mRNA and protein levels of FOXO1 in the cells (P < 0.001). RIP experiment confirmed WTAP binding to FOXO1 mRNA, and inhibition of WTAP expression significantly reduced FOXO1 m6A level in HK-2 cells (P < 0.001). CONCLUSION WTAP expression is up-regulated in the kidneys of mice with renal I/R injury and in HK-2 cells with H/R exposure. Inhibition of WTAP alleviates H/R-induced apoptotic damage in HK-2 cells possibly by inhibiting FOXO1 expression.
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Affiliation(s)
- 刚刚 赵
- 西安医学院第一附属医院泌尿外科,陕西 西安 710000Department of Urology, First Affiliated Hospital of Xi'an Medical University, Xi'an 710000, China
| | - 华锋 李
- 西安医学院第一附属医院泌尿外科,陕西 西安 710000Department of Urology, First Affiliated Hospital of Xi'an Medical University, Xi'an 710000, China
| | - 鸿毅 张
- 西安医学院第一附属医院泌尿外科,陕西 西安 710000Department of Urology, First Affiliated Hospital of Xi'an Medical University, Xi'an 710000, China
| | - 克兵 肖
- 西安医学院第一附属医院泌尿外科,陕西 西安 710000Department of Urology, First Affiliated Hospital of Xi'an Medical University, Xi'an 710000, China
| | - 辉 杨
- 西安医学院第一附属医院泌尿外科,陕西 西安 710000Department of Urology, First Affiliated Hospital of Xi'an Medical University, Xi'an 710000, China
| | - 子峰 李
- 西安医学院第一附属医院泌尿外科,陕西 西安 710000Department of Urology, First Affiliated Hospital of Xi'an Medical University, Xi'an 710000, China
| | - 崇德 傅
- 西安航天总医院泌尿外科,陕西 西安 710100Department of Urology, Xi'an Aerospace General Hospital, Xi'an 710000, China
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Luo M, Su Z, Gao H, Tan J, Liao R, Yang J, Lin L. Cirsiliol induces autophagy and mitochondrial apoptosis through the AKT/FOXO1 axis and influences methotrexate resistance in osteosarcoma. J Transl Med 2023; 21:907. [PMID: 38087310 PMCID: PMC10714637 DOI: 10.1186/s12967-023-04682-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 10/29/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Osteosarcoma (OS) is the most common primary malignant bone tumor in children and adolescents, with poor outcomes for patients with metastatic disease or chemotherapy resistance. Cirsiliol is a recently found flavonoid with anti-tumor effects in various tumors. However, the effects of cirsiliol in the regulation of aggressive behaviors of OS remain unknown. METHODS The effect of cirsiliol on the proliferation of OS cells was detected using a cell counting kit-8 (CCK-8) assay and 5-ethynyl-2'-deoxyuridine (EdU) staining, while cell apoptosis was detected using flow cytometry. Immunofluorescence was applied to visualize the expression level of the mitochondria, lysosomes and microtubule-associated protein light chain 3 (LC3). A computational molecular docking technique was used to predict the interaction between cirsiliol and the AKT protein. The impact of cirsiliol on resistance was investigated by comparing it between a methotrexate (MTX)-sensitive OS cell line, U2OS, and a MTX-resistant OS cell line, U2OS/MTX. Finally, in situ xenogeneic tumor models were used to validate the anti-tumor effect of cirsiliol in OS. RESULTS Cirsiliol inhibited cell proliferation and induced apoptosis in both U2OS and U2OS/MTX300 OS cells. In addition, treatment with cirsiliol resulted in G2 phase arrest in U2OS/MTX300 and U2OS cells. Cell fluorescence probe staining results showed impaired mitochondria and increased autophagy in OS cells after treatment with cirsiliol. Mechanistically, it was found that cirsiliol targeted AKT by reducing the phosphorylation of AKT, which further activated the transcriptional activity of forkhead Box O transcription factor 1 (FOXO1), ultimately affecting the function of OS cells. Moreover, in situ tumorigenesis experiments showed that cirsiliol inhibited the tumorigenesis and progression of OS in vivo. CONCLUSIONS Cirsiliol inhibits OS cell growth and induces cell apoptosis by reducing AKT phosphorylation and further promotes FOXO1 expression. These phenomena indicate that cirsiliol is a promising treatment option for OS.
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Affiliation(s)
- Mengliang Luo
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Zexin Su
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Haotian Gao
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Jianye Tan
- Department of Orthopaedics, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Rongdong Liao
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China
| | - Jiancheng Yang
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
| | - Lijun Lin
- Department of Joint and Orthopedics, Zhujiang Hospital, Southern Medical University, Guangzhou, 510282, China.
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Kundu D, Kennedy L, Zhou T, Ekser B, Meadows V, Sybenga A, Kyritsi K, Chen L, Ceci L, Wu N, Wu C, Glaser S, Carpino G, Onori P, Gaudio E, Alpini G, Francis H. p16 INK4A drives nonalcoholic fatty liver disease phenotypes in high fat diet fed mice through biliary E2F1/FOXO1/IGF-1 signaling. Hepatology 2023; 78:243-257. [PMID: 36799449 PMCID: PMC10410572 DOI: 10.1097/hep.0000000000000307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 01/03/2023] [Indexed: 02/18/2023]
Abstract
BACKGROUND AND AIMS NAFLD is characterized by steatosis, hepatic inflammation, and fibrosis, which can develop into NASH. Patients with NAFLD/NASH have increased ductular reaction (DR) and biliary senescence. High fat/high cholesterol diet feeding increases biliary senescence, DR, and biliary insulin-like growth factor-1 (IGF-1) expression in mice. p16/IGF-1 converges with fork-head box transcription factor O1 (FOXO1) through E2F1. We evaluated p16 inhibition on NAFLD phenotypes and biliary E2F1/FOXO1/IGF-1 signaling. APPROACH AND RESULTS 4-week wild-type (C57BL/6J) male mice were fed a control diet (CD) or high fat/high cholesterol diet and received either p16 or control Vivo Morpholino (VM) by tail vein injection 2× during the 16th week of feeding. We confirmed p16 knockdown and examined: (i) NAFLD phenotypes; (ii) DR and biliary senescence; (iii) serum metabolites; and (iv) biliary E2F1/FOXO1/IGF-1 signaling. Human normal, NAFLD, and NASH liver samples and isolated cholangiocytes treated with control or p16 VM were evaluated for p16/E2F1/FOXO1/IGF-1 signaling. p16 VM treatment reduced cholangiocyte and hepatocyte p16. In wild-type high fat/high cholesterol diet mice with control VM, there were increased (i) NAFLD phenotypes; (ii) DR and biliary senescence; (iii) serum metabolites; and (iv) biliary E2F1/FOXO1/IGF-1 signaling; however, p16 VM treatment reduced these parameters. Biliary E2F1/FOX-O1/IGF-1 signaling increased in human NAFLD/NASH but was blocked by p16 VM. In vitro , p16 VM reduced biliary E2f1 and Foxo1 transcription by inhibiting RNA pol II binding and E2F1 binding at the Foxo1 locus, respectively. Inhibition of E2F1 reduced biliary FOXO1 in vitro. CONCLUSION Attenuating hepatic p16 expression may be a therapeutic approach for improving NAFLD/NASH phenotypes.
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Affiliation(s)
- Debjyoti Kundu
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine Research
| | - Lindsey Kennedy
- Department of Research, Richard L. Roudebush VA Medical Center
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine Research
| | - Tianhao Zhou
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine Research
| | - Burcin Ekser
- Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Vik Meadows
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine Research
| | | | - Konstantina Kyritsi
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine Research
| | - Lixian Chen
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine Research
| | - Ludovica Ceci
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine Research
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Rome, Italy
| | - Nan Wu
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine Research
| | - Chaodong Wu
- Department of Nutrition, Texas A&M University, College Station, Texas
| | | | - Guido Carpino
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Rome, Italy
| | - Paolo Onori
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Rome, Italy
| | - Eugenio Gaudio
- Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Rome, Italy
| | - Gianfranco Alpini
- Department of Research, Richard L. Roudebush VA Medical Center
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine Research
| | - Heather Francis
- Department of Research, Richard L. Roudebush VA Medical Center
- Division of Gastroenterology and Hepatology, Department of Medicine, Indiana University School of Medicine Research
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9
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Raze T, Lapouble E, Lacour B, Guissou S, Defachelles AS, Gaspar N, Delattre O, Pierron G, Desandes E. PAX-FOXO1 fusion status in children and adolescents with alveolar rhabdomyosarcoma: Impact on clinical, pathological, and survival features. Pediatr Blood Cancer 2023; 70:e30228. [PMID: 36722003 DOI: 10.1002/pbc.30228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 01/04/2023] [Accepted: 01/11/2023] [Indexed: 02/02/2023]
Abstract
BACKGROUND Alveolar rhabdomyosarcoma (ARMS) is an aggressive pediatric cancer and cases with fusion PAX3-FOXO1 and PAX7-FOXO1 seem to have a poor prognosis. The aim is to evaluate whether PAX-FOXO1 alterations influence clinical outcome in childhood and adolescence population with ARMS. PROCEDURE A population-based study was conducted between 2011 and 2016 in patients less than 17 years with a diagnosis of ARMS. Overall survival (OS) depending on fusion status with clinical factors was analyzed. RESULTS Out of 111 ARMS patients recorded in the French National Childhood Cancer Registry during the 2011-2016 period, 61% expressed PAX3-FOXO1, 15% expressed PAX7-FOXO1, 13% were FOXO1 fusion-positive without PAX specification, and 7% were PAX-FOXO1 negative (n = 4 missing data). Compared to patients with PAX7-FOXO1 positive ARMS, those with PAX3-FOXO1 positive tumor were significantly older (10-17 years: 57.4% vs. 29.4%), and had more often a metastatic disease (54.4% vs. 23.5%). Poorer 5-year OS for patients with PAX3-FOXO1 and PAX not specified FOXO1-positive tumor were observed (44.0% [32.0-55.4] and 35.7% [13.1-59.4], respectively). After adjustment for stage at diagnosis, patients with positive tumor for PAX3-FOXO1 were 3.6-fold more likely to die than those with positive tumor for PAX7-FOXO1. CONCLUSION At the population level, PAX3-FOXO1 was associated with a significant higher risk of death compared to PAX7-FOXO1-positive and PAX-FOXO1-negative tumors, and could explain poorer 5-year OS observed in adolescence population diagnosed with ARMS. A continuous risk score derived from the combination of clinical parameters with PAX3-FOXO1 fusion status represents a robust approach to improving current risk-adapted therapy for ARMS.
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Affiliation(s)
- Thomas Raze
- Registre National des cancers de l'Enfant, Registre National des Tumeurs Solides de l'Enfant, CHRU Nancy, Vandœuvre-lès-Nancy, France
| | - Eve Lapouble
- Département de génétique, Unité de Génétique Somatique, Institut Curie, Paris, France
| | - Brigitte Lacour
- Registre National des cancers de l'Enfant, Registre National des Tumeurs Solides de l'Enfant, CHRU Nancy, Vandœuvre-lès-Nancy, France
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université Paris-Cité, Paris, France
| | - Sandra Guissou
- Registre National des cancers de l'Enfant, Registre National des Tumeurs Solides de l'Enfant, CHRU Nancy, Vandœuvre-lès-Nancy, France
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université Paris-Cité, Paris, France
| | | | - Nathalie Gaspar
- Département d'Oncologie Enfants et Adolescents, Centre du Cancer Gustave Roussy, Université Paris Saclay, Villejuif, France
| | - Olivier Delattre
- Département de génétique, Unité de Génétique Somatique, Institut Curie, Paris, France
- Diversity and Plasticity of Childhood Tumors Lab, INSERM U830, PSL Research University, SIREDO Oncology Center, Institut Curie Research Center, Paris, France
| | - Gaelle Pierron
- Département de génétique, Unité de Génétique Somatique, Institut Curie, Paris, France
| | - Emmanuel Desandes
- Registre National des cancers de l'Enfant, Registre National des Tumeurs Solides de l'Enfant, CHRU Nancy, Vandœuvre-lès-Nancy, France
- Epidémiologie des Cancers des Enfants et des Adolescents (EPICEA), Centre de Recherche en Epidémiologie et Statistiques (CRESS), INSERM, UMR 1153, Université Paris-Cité, Paris, France
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10
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Maiese K. Ferroptosis, Iron Metabolism, and Forkhead Transcription Factors (FoxOs). Curr Neurovasc Res 2023; 20:291-295. [PMID: 37409699 DOI: 10.2174/1567202620666230706160056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
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11
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Wang K, Cui X, Li F, Xia L, Wei T, Liu J, Fu W, Yang J, Hong T, Wei R. Glucagon receptor blockage inhibits β-cell dedifferentiation through FoxO1. Am J Physiol Endocrinol Metab 2023; 324:E97-E113. [PMID: 36383639 DOI: 10.1152/ajpendo.00101.2022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Glucagon-secreting pancreatic α-cells play pivotal roles in the development of diabetes. Glucagon promotes insulin secretion from β-cells. However, the long-term effect of glucagon on the function and phenotype of β-cells had remained elusive. In this study, we found that long-term glucagon intervention or glucagon intervention with the presence of palmitic acid downregulated β-cell-specific markers and inhibited insulin secretion in cultured β-cells. These results suggested that glucagon induced β-cell dedifferentiation under pathological conditions. Glucagon blockage by a glucagon receptor (GCGR) monoclonal antibody (mAb) attenuated glucagon-induced β-cell dedifferentiation. In primary islets, GCGR mAb treatment upregulated β-cell-specific markers and increased insulin content, suggesting that blockage of endogenous glucagon-GCGR signaling inhibited β-cell dedifferentiation. To investigate the possible mechanism, we found that glucagon decreased FoxO1 expression. FoxO1 inhibitor mimicked the effect of glucagon, whereas FoxO1 overexpression reversed the glucagon-induced β-cell dedifferentiation. In db/db mice and β-cell lineage-tracing diabetic mice, GCGR mAb lowered glucose level, upregulated plasma insulin level, increased β-cell area, and inhibited β-cell dedifferentiation. In aged β-cell-specific FoxO1 knockout mice (with the blood glucose level elevated as a diabetic model), the glucose-lowering effect of GCGR mAb was attenuated and the plasma insulin level, β-cell area, and β-cell dedifferentiation were not affected by GCGR mAb. Our results proved that glucagon induced β-cell dedifferentiation under pathological conditions, and the effect was partially mediated by FoxO1. Our study reveals a novel cross talk between α- and β-cells and is helpful to understand the pathophysiology of diabetes and discover new targets for diabetes treatment.NEW & NOTEWORTHY Glucagon-secreting pancreatic α-cells can interact with β-cells. However, the long-term effect of glucagon on the function and phenotype of β-cells has remained elusive. Our new finding shows that long-term glucagon induces β-cell dedifferentiation in cultured β-cells. FoxO1 inhibitor mimicks whereas glucagon signaling blockage by GCGR mAb reverses the effect of glucagon. In type 2 diabetic mice, GCGR mAb increases β-cell area, improves β-cell function, and inhibits β-cell dedifferentiation, and the effect is partially mediated by FoxO1.
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Affiliation(s)
- Kangli Wang
- Department of Endocrinology and Metabolism, https://ror.org/04wwqze12Peking University Third Hospital, Beijing, China
| | - Xiaona Cui
- Department of Endocrinology and Metabolism, https://ror.org/04wwqze12Peking University Third Hospital, Beijing, China
| | - Fei Li
- Department of Endocrinology and Metabolism, https://ror.org/04wwqze12Peking University Third Hospital, Beijing, China
| | - Li Xia
- Department of Endocrinology and Metabolism, https://ror.org/04wwqze12Peking University Third Hospital, Beijing, China
| | - Tianjiao Wei
- Department of Endocrinology and Metabolism, https://ror.org/04wwqze12Peking University Third Hospital, Beijing, China
| | - Junling Liu
- Department of Endocrinology and Metabolism, https://ror.org/04wwqze12Peking University Third Hospital, Beijing, China
| | - Wei Fu
- Department of Endocrinology and Metabolism, https://ror.org/04wwqze12Peking University Third Hospital, Beijing, China
| | - Jin Yang
- Department of Endocrinology and Metabolism, https://ror.org/04wwqze12Peking University Third Hospital, Beijing, China
- Clinical Stem Cell Research Center, Peking University Third Hospital, Beijing, China
| | - Tianpei Hong
- Department of Endocrinology and Metabolism, https://ror.org/04wwqze12Peking University Third Hospital, Beijing, China
- Clinical Stem Cell Research Center, Peking University Third Hospital, Beijing, China
| | - Rui Wei
- Department of Endocrinology and Metabolism, https://ror.org/04wwqze12Peking University Third Hospital, Beijing, China
- Clinical Stem Cell Research Center, Peking University Third Hospital, Beijing, China
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12
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Inoue H, Shimizu Y, Yoshikawa H, Arakawa K, Tanaka M, Morimoto H, Sato A, Takino Y, Ishigami A, Takahashi N, Uehara M. Resveratrol Upregulates Senescence Marker Protein 30 by Activating AMPK/Sirt1-Foxo1 Signals and Attenuating H 2O 2-Induced Damage in FAO Rat Liver Cells. J Nutr Sci Vitaminol (Tokyo) 2023; 69:388-393. [PMID: 37940580 DOI: 10.3177/jnsv.69.388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Resveratrol (RSV) is a polyphenol with numerous biological functions, including anti-inflammatory, antioxidant, and anti-aging activities. The novel senescence marker protein-30 (SMP30) indicates aging, and it suppresses hepatic oxidative stress. However, the effects of RSV on SMP30 expression regulation remain unclear. We observed that RSV positively regulates SMP30 expression in rat hepatoma-derived FAO cells. However, this was abolished by Compound C and EX-527 that specifically inhibit AMP-activated protein kinase (AMPK) and Silent Information Regulator T1 (Sirt1), respectively. We predicted binding sites for AMPK, forkhead box protein O1 (Foxo1), and Sirt1 downstream molecules as possible SMP30 promoters using the JASPAR and UniProtKB databases. We identified a Foxo1 binding site in the promoter region of SMP30. Inhibiting Foxo1 with AS1842527 also decreased the RSV-induced upregulation of SMP30 expression. Moreover, RSV suppressed the substantial downregulation of SMP30 expression caused by oxidative stress and hydrogen peroxide (H2O2) and released accumulated lactate dehydrogenase. These results demonstrate that, as a novel food factor, RSV-induced upregulation of SMP30 by activating AMPK/Sirt1-Foxo1 signaling and may attenuates H2O2-induced oxidative damage. The findings of this study offer new perspectives of the anti-ageing properties of RSV.
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Affiliation(s)
- Hirofumi Inoue
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture
| | - Yusaku Shimizu
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture
| | - Hiroto Yoshikawa
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture
| | - Kohta Arakawa
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture
| | - Miori Tanaka
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture
| | - Hiromu Morimoto
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture
| | - Ayami Sato
- Molecular Regulation of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology (TMIG)
| | - Yuka Takino
- Molecular Regulation of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology (TMIG)
| | - Akihito Ishigami
- Molecular Regulation of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology (TMIG)
| | - Nobuyuki Takahashi
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture
| | - Mariko Uehara
- Department of Nutritional Science and Food Safety, Faculty of Applied Bioscience, Tokyo University of Agriculture
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13
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Wei X, Yang D, Zhang B, Fan X, Du H, Zhu R, Sun X, Zhao M, Gu N. Di-(2-ethylhexyl) phthalate increases plasma glucose and induces lipid metabolic disorders via FoxO1 in adult mice. Sci Total Environ 2022; 842:156815. [PMID: 35750186 DOI: 10.1016/j.scitotenv.2022.156815] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/04/2022] [Accepted: 06/15/2022] [Indexed: 06/15/2023]
Abstract
Di-(2-ethylhexyl) phthalate (DEHP), an endocrine-disrupting chemical (EDC) commonly used as a plasticizer, is responsible for widespread environmental pollution. Epidemiological and experimental data implicate DEHP and its metabolite mono(2-ethylhexyl) phthalate (MEHP) in the occurrence and development of metabolic syndrome. However, the specific effects and potential mechanisms of action of DEHP on glucose and lipid metabolism in adults are currently unclear. In the current study, adult male mice were continuously exposed to DEHP (0, 5, and 25 mg/kg/day) via oral administration and changes in glucose and lipid metabolism explored. Notably, exposure to DEHP led to a significant increase in plasma glucose and hepatic lipid accumulation but had no effect on insulin secretion. Western blot and real-time quantitative PCR showed that DEHP induced insulin resistance and promoted gluconeogenesis and lipid accumulation via overexpression of forkhead box protein O1 (FoxO1), in keeping with hepatic RNA sequencing data. Variations in gut microbiota aggravated these effects while inhibition of FoxO1 reversed the adverse effects of DEHP. Our findings support a key role of FoxO1 in disorders of glucose and lipid metabolism caused by DEHP.
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Affiliation(s)
- 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
| | - Haining Du
- 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
| | - Xiaotong Sun
- 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
| | - 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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14
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Wang YL, Ren D, Lu JL, Jiang H, Wei JZ, Lan J, Liu F, Qu SH. STAT3 regulates SRGN and promotes metastasis of nasopharyngeal carcinoma through the FoxO1-miR-148a-5p-CREB1 axis. J Transl Med 2022; 102:919-934. [PMID: 36775421 DOI: 10.1038/s41374-022-00733-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 12/26/2021] [Accepted: 01/03/2022] [Indexed: 11/08/2022] Open
Abstract
Nasopharyngeal carcinoma (NPC), which is marked by a distinct distribution, is a common subtype of epithelial carcinoma arising from the nasopharyngeal mucosal lining. SRGN acts as an important and poor prognostic factor of NPC through multiple different mechanisms. However, the biological role and mechanism of SRGN in NPC remain unknown. Expression levels of miR-148a-5p, CREB1, FoxO1, and SRGN in NPC tissues and cell lines were tested by qRT-PCR or/and Western blot. The impacts of miR-148a-5p, CREB1, FoxO1, and SRGN on NPC cell viability, proliferation, migration, and invasion were estimated in vitro by CCK-8, colony formation, wound healing and Transwell experiments, and in vivo by a xenograft tumor model. JASPAR analysis was used to predict the binding activity of Foxo1 (CREB1) with the miR-148a-5p (SRGN) promoter, and the interaction was validated by EMSA and ChIP assays. The miR-148a-5p-CREB1 interaction was validated by a dual-luciferase reporter and RIP assays. CREB1 and SRGN were increased while miR-148a-5p was decreased in NPC. Silencing of SRGN and CREB1, as well as miR-148a-5p overexpression, repressed NPC tumor progression in vitro and in vivo. CREB1 promoted SRGN expression in NPC by targeting the promoter area of SRGN. Silencing of FoxO1 facilitated NPC tumor progression, while silencing of STAT3 repressed NPC tumor progression. FoxO1 bound to and regulated miR-148a-5p in NPC, and miR-148a-5p targeted CREB1. Additionally, FoxO1 knockdown abolished the downregulation of CREB1 and SRGN induced by STAT3 silencing. Our results suggest that STAT3 regulates SRGN and promotes the growth and metastasis of NPC through the FoxO1-miR-148a-5p-CREB1 axis.
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Affiliation(s)
- Yong-Li Wang
- Department of Otolaryngology & Head and Neck, The People's Hospital of Guangxi Zhuang Autonomous Region, Guangxi Academy of Medical Sciences, Nanning, 530021, PR China.
| | - Dan Ren
- Department of Human Anatomy, Basic Medical College, Guangxi Medical University, Nanning, 530021, PR China
| | - Jin-Long Lu
- Department of Otolaryngology & Head and Neck, The People's Hospital of Guangxi Zhuang Autonomous Region, Guangxi Academy of Medical Sciences, Nanning, 530021, PR China
| | - He Jiang
- Department of Otolaryngology & Head and Neck, The People's Hospital of Guangxi Zhuang Autonomous Region, Guangxi Academy of Medical Sciences, Nanning, 530021, PR China
| | - Jia-Zhang Wei
- Department of Otolaryngology & Head and Neck, The People's Hospital of Guangxi Zhuang Autonomous Region, Guangxi Academy of Medical Sciences, Nanning, 530021, PR China
| | - Jiao Lan
- Research Center of Medical Sciences, The People's Hospital of Guangxi Zhuang Autonomous Region, Guangxi Academy of Medical Sciences, Nanning, 530021, PR China
| | - Fei Liu
- Research Center of Medical Sciences, The People's Hospital of Guangxi Zhuang Autonomous Region, Guangxi Academy of Medical Sciences, Nanning, 530021, PR China
| | - Shen-Hong Qu
- Department of Otolaryngology & Head and Neck, The People's Hospital of Guangxi Zhuang Autonomous Region, Guangxi Academy of Medical Sciences, Nanning, 530021, PR China.
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15
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Kamoshita K, Tajima-Shirasaki N, Ishii KA, Shirasaki T, Takayama H, Abuduwaili H, Abuduyimiti T, Oo HK, Yao X, Li Q, Galicia-Medina CM, Kaneko S, Takamura T. Forkhead box protein O1 (FoxO1) knockdown accelerates the eicosapentaenoic acid (EPA)-mediated Selenop downregulation independently of sterol regulatory element-binding protein-1c (SREBP-1c) in H4IIEC3 hepatocytes. Endocr J 2022; 69:907-918. [PMID: 35321982 DOI: 10.1507/endocrj.ej21-0392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Selenoprotein P is upregulated in type 2 diabetes, causing insulin and exercise resistance. We have previously reported that eicosapentaenoic acid (EPA) negatively regulates Selenop expression by suppressing Srebf1 in H4IIEC3 hepatocytes. However, EPA downregulated Srebf1 long before downregulating Selenop. Here, we report additional novel mechanisms for the Selenop gene regulation by EPA. EPA upregulated Foxo1 mRNA expression, which was canceled with the ERK1/2 inhibitor, but not with the PKA inhibitor. Foxo1 knockdown by siRNA initiated early suppression of Selenop, but not Srebf1, by EPA. However, EPA did not affect the nuclear translocation of the FoxO1 protein. Neither ERK1/2 nor PKA inhibitor affected FoxO1 nuclear translocation. In summary, FoxO1 knockdown accelerates the EPA-mediated Selenop downregulation independent of SREBP-1c in hepatocytes. EPA upregulates Foxo1 mRNA via the ERK1/2 pathway without altering its protein and nuclear translocation. These findings suggest redundant and conflicting transcriptional networks in the lipid-induced redox regulation.
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Affiliation(s)
- Kyoko Kamoshita
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Natsumi Tajima-Shirasaki
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Kiyo-Aki Ishii
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
- Department of Integrative Medicine for Longevity, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan
| | - Takayoshi Shirasaki
- Department of Advanced Medical Technology, Kanazawa University Graduate School of Health Medicine, Kanazawa 920-8641, Japan
| | - Hiroaki Takayama
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
- Life Sciences Division, Engineering and Technology Department, Kanazawa University, Kanazawa 920-8641, Japan
| | - Halimulati Abuduwaili
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Tuerdiguli Abuduyimiti
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Hein Ko Oo
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Xingyu Yao
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Qifang Li
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Cynthia M Galicia-Medina
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Shuichi Kaneko
- Department of System Biology, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
| | - Toshinari Takamura
- Department of Endocrinology and Metabolism, Kanazawa University Graduate School of Medical Sciences, Kanazawa 920-8641, Japan
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Chen X, Han D, Liu T, Huang C, Hu Z, Tan X, Wu S. Asiatic acid improves high-fat-diet-induced osteoporosis in mice via regulating SIRT1/FOXO1 signaling and inhibiting oxidative stress. Histol Histopathol 2022; 37:769-777. [PMID: 35229281 DOI: 10.14670/hh-18-446] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Asiatic acid can attenuate osteoporosis through suppressing adipogenic differentiation and osteoclastic differentiation. Oxidative stress enhances osteoclastic differentiation but represses osteogenic differentiation to promote osteoporosis. However, the role and mechanism of asiatic acid in osteoporosis have not been reported. Firstly, mice were fed with high-fat-diet (HFD) with or without asiatic acid for 16 weeks. Data from an automatic biochemical analyzer showed that HFD induced down-regulation of high-density lipoprotein (HDL) and an increase of serum levels of triglyceride (TG), total cholesterol (TC) and low-density lipoprotein (LDL). However, asiatic acid administration attenuated the decrease of HDL and increase of serum TG, TC and LDL in osteoporotic mice. Secondly, HFD induced high levels of malondialdehyde (MDA) and reactive oxygen species (ROS), low levels of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in osteoporotic mice. However, the levels of MDA, ROS, SOD and GSH-Px in osteoporotic mice were reversed by asiatic acid administration. (this section is unclear and requires revision) Asiatic acid administration reduced expression of c-telopeptide of type 1 collagen (CTX-1), enhanced alkaline phosphatase (ALP) and procollagen type 1 N-terminal propeptide (P1NP) in HFD-induced osteoporotic mice. (this section is unclear and requires revision) Thirdly, asiatic acid promoted calcium deposition in bone marrow cells and osteogenic differentiation in osteoporotic mice, but decreased ALP in bone marrow cells. Lastly, asiatic acid enhanced SIRT1 and nuclear FOXO1 (Nu-FOXO1) expression, while it reduced Acetyl FOXO1 (Ac-FOXO1) in osteoporotic mice. In conclusion, asiatic acid might inhibit oxidative stress and promote osteogenic differentiation through activating SIRT1/FOXO1 to attenuate HFD-induced osteoporosis in mice.
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Affiliation(s)
- Xiaosi Chen
- International and Special Medical Service ward, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China
| | - Dengpeng Han
- Department of Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China
| | - Tianfeng Liu
- Department of Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China
| | - Chengshuo Huang
- Department of Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China
| | - Zibing Hu
- Department of Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China
| | - Xiaoyan Tan
- Department of Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China
| | - Shaoke Wu
- Department of Orthopedic Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang City, Guangdong Province, China.
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Xiang M, Liu T, Tian C, Ma K, Gou J, Huang R, Li S, Li Q, Xu C, Li L, Lee CH, Zhang Y. Kinsenoside attenuates liver fibro-inflammation by suppressing dendritic cells via the PI3K-AKT-FoxO1 pathway. Pharmacol Res 2022; 177:106092. [PMID: 35066108 PMCID: PMC8776354 DOI: 10.1016/j.phrs.2022.106092] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 01/16/2022] [Accepted: 01/18/2022] [Indexed: 12/25/2022]
Abstract
Kinsenoside (KD) exhibits anti-inflammatory and immunosuppressive effects. Dendritic cells (DCs) are critical regulators of the pathologic inflammatory milieu in liver fibrosis (LF). Herein, we explored whether and how KD repressed development of LF via DC regulation and verified the pathway involved in the process. Given our analysis, both KD and adoptive transfer of KD-conditioned DCs conspicuously reduced hepatic histopathological damage, proinflammatory cytokine release and extracellular matrix deposition in CCl4-induced LF mice. Of note, KD restrained the LF-driven rise in CD86, MHC-II, and CCR7 levels and, simultaneously, upregulated PD-L1 expression on DCs specifically, which blocked CD8+T cell activation. Additionally, KD reduced DC glycolysis, maintained DCs immature, accompanied by IL-12 decrease in DCs. Inhibiting DC function by KD disturbed the communication of DCs and HSCs with the expression or secretion of α-SMA and Col-I declined in the liver. Mechanistically, KD suppressed the phosphorylation of PI3K-AKT driven by LF or PI3K agonist, followed by enhanced nuclear transport of FoxO1 and upregulated interaction of FoxO1 with the PD-L1 promoter in DCs. PI3K inhibitor or si-IL-12 acting on DC could relieve LF, HSC activation and diminish the effect of KD. In conclusion, KD suppressed DC maturation with promoted PD-L1 expression via PI3K-AKT-FoxO1 and decreased IL-12 secretion, which blocked activation of CD8+T cells and HSCs, thereby alleviating liver injury and fibro-inflammation in LF.
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Affiliation(s)
- Ming Xiang
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Tingting Liu
- Department of Pharmacy, the First Affiliated Hospital of Anhui Medical University, the Grade 3 Pharmaceutical Chemistry Laboratory of State Administration of Traditional Chinese Medicine, Hefei, Anhui, China
| | - Cheng Tian
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Kun Ma
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jing Gou
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Rongrong Huang
- Department of Pharmacy, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Senlin Li
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Qing Li
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Chuanrui Xu
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Lei Li
- Department of Pharmacology, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Chih-Hao Lee
- Department of Genetics and Complex Diseases, Harvard School of Public Health, Boston, MA, USA
| | - Yonghui Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China.
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18
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Luo M, Sun W, Kong X. Emodin alleviates aortic valvular calcification by inhibiting the AKT/FOXO1 pathway. Ann Anat 2021; 240:151885. [PMID: 34958913 DOI: 10.1016/j.aanat.2021.151885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND Valvular calcification commonly occurs in elderly individuals, and is increasingly considered an important economic and health burden. However, no efficient drugs against valvular calcification are available. The present work aimed to examine emodin's suppressive effect on high-calcium-dependent valve calcification and explore the underpinning mechanisms. METHODS Experiments were carried out in mice receiving vitamin D (Vit D) to induce valvular calcification. RESULTS Cell viability and apoptosis assays demonstrated celastrol suppressed proliferation and increased apoptosis in porcine aortic valve interstitial cells (PAVICs) at concentrations higher than 10 μM. Emodin (5 μM) attenuated the upregulation of osteogenic genes as well as calcium accumulation in PAVICs under high-calcium conditions. The elevations of calcium content in serum and valve, and calcium accumulation in valve and artery were suppressed by emodin in mice with valvular calcification after joint treatment with adenine and Vit D. In addition, p-AKT and p-FOXO1 were upregulated in PAVICs under high-calcium conditions, and this effect was reversed by emodin treatment. SC79, an AKT activator, reversed emodin's suppressive effects on increased calcium content, calcium deposition and osteogenic gene expression in PAVICs induced by calcific medium. CONCLUSIONS These data demonstrated emodin alleviates high-calcium-associated valvular calcification via AKT/FOXO1 signaling suppression, providing new insights into therapeutic strategies for clinical valvular calcification.
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Affiliation(s)
- Man Luo
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Wei Sun
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiangqing Kong
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
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19
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Fettig LM, Sartorius CA. Phospho-PR Isoforms and Cancer Stem Cells: What Does the FOXO1 Say? Endocrinology 2019; 160:1067-1068. [PMID: 30901022 PMCID: PMC6760320 DOI: 10.1210/en.2019-00158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 03/17/2019] [Indexed: 11/19/2022]
Affiliation(s)
- Lynsey M Fettig
- Department of Pathology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Carol A Sartorius
- Department of Pathology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
- Correspondence: Carol A. Sartorius, PhD, University of Colorado Anschutz Medical Campus, 12801 East 17th Avenue MS8104, Aurora, Colorado 80045. E-mail:
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20
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Wu C, Watts ME, Rubin LL. MAP4K4 Activation Mediates Motor Neuron Degeneration in Amyotrophic Lateral Sclerosis. Cell Rep 2019; 26:1143-1156.e5. [PMID: 30699345 DOI: 10.1016/j.celrep.2019.01.019] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 12/03/2018] [Accepted: 01/04/2019] [Indexed: 12/12/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease affecting both upper and lower motor neurons (MNs). To date, its underlying mechanisms have yet to be clarified completely, and there are no truly effective treatments. Here, we show that MAP4K4, a MAP kinase family member, regulates MN death, with its suppression not only promoting survival but preventing neurite degeneration and decreasing mutant SOD1 levels through autophagy activation. Moreover, we report that MAP4K4 signaling specifically modulates MN viability via phosphorylated JNK3 and activation of the canonical c-Jun apoptotic pathway. Finally, we show the feasibility of MAP4K4 as a drug target by using an available MAP4K4-specific inhibitor, which improves survival of ESC and/or iPSC-derived MNs and MNs cultured from mouse spinal cords. In summary, our studies highlight a MAP4K4-initiated signaling cascade that induces MN degeneration, shedding light on the mechanism underlying MN degeneration and providing a druggable target for ALS therapeutics.
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Affiliation(s)
- Chen Wu
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Harvard Stem Cell Institute, Harvard University, Cambridge, MA 02138, USA
| | - Michelle E Watts
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Harvard Stem Cell Institute, Harvard University, Cambridge, MA 02138, USA
| | - Lee L Rubin
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Harvard Stem Cell Institute, Harvard University, Cambridge, MA 02138, USA.
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21
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Affiliation(s)
- X Charlie Dong
- Department of Biochemistry and Molecular Biology, Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, IN
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22
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23
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Abstract
Physical forces play a critical role in the survival and proliferation of many cell types, including fibroblasts. Gingival fibroblasts are exposed to mechanical stress during mastication, orthodontic tooth movement, and wound healing following periodontal surgery. The aim of this study was to examine the effect of mechanical strain on human gingival fibroblasts (hGF). Cells were subjected to short-term (up to 60 min) and long-term (up to 48 hrs) 20% average elongation at 0.1 Hz. We monitored survival signaling by evaluating the phosphorylation status and localization of Forkhead box (FoxO) family members, which are mediators of apoptosis. We also examined strain-induced proliferation by measuring the level of proliferating cell nuclear antigen (PCNA). We observed that cyclic strain caused the phosphorylation and retention in the cytoplasm of FoxO family members. Moreover, mechanical strain resulted in increased ERK kinase phosphorylation and PCNA expression. In conclusion, cyclic strain delivers anti-apoptotic and proliferative stimuli to hGF.
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Affiliation(s)
- T E Danciu
- Enders Research Laboratories, Rm 1150.2, Children's Hospital, 300 Longwood Avenue, Boston, MA 02115, USA.
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24
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Yue Z, Shen JJ, Huang QT, Qin YF, Li XN, Liu GB. [MiR-135b promotes proliferation of endometrial carcinoma cells by targeting FOXO1]. Nan Fang Yi Ke Da Xue Xue Bao 2016; 36:675-680. [PMID: 27222184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To explore the expression of miR-135b in endometrial carcinoma and the mechanism by which miR-135b promotes the proliferation of endometrial cancer cells. METHODS The expressions of miR-135b and FOXO1 were using RT-PCR detected in 22 fresh endometrial cancer tissues and paired adjacent tissues and also in endometrial cancer cell lines JEC, Ishikawa, HEC-1-B, and RL-952. The RL-952 and Ishikawa cell lines were transfected with miR-135b mimics or inhibitors, and the changes in their proliferative activity were detected with MTT assay; the expressions of FOXO1 mRNA and protein were detected by RT-PCR and Western blotting, respectively. RESULTS The expression of miRNA135b was significantly up-regulated and FOXO1 expression was down-regulated in endometrial carcinoma tissues as compared with the adjacent tissues (P<0.05). The mRNA expression of miR-135b was negatively correlated with the expression of FOXO1 in endometrial carcinoma. In RL-952 and Ishikawa cell lines, transfection with miR-135b mimics obviously promoted the cell proliferation (P<0.05). Up-regulation of miR-135b significantly decreased the expressions of FOXO1 protein and mRNA (P<0.05), and down- regulation of miR-135b increased FOXO1 expressions (P<0.05). CONCLUSIONS MiR-135b plays an important role in the occurrence and development of endometrial carcinoma partially by regulating its target gene FOXO1.
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Affiliation(s)
- Zhen Yue
- Department of Obstetrics and Gynecology, Nanfang Hospital, Southern Medical Universityl,Guangzhou 510515, China.E-mail:
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25
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Wang Q, Yu WN, Chen X, Peng XD, Jeon SM, Birnbaum MJ, Guzman G, Hay N. Spontaneous Hepatocellular Carcinoma after the Combined Deletion of Akt Isoforms. Cancer Cell 2016; 29:523-535. [PMID: 26996309 PMCID: PMC4921241 DOI: 10.1016/j.ccell.2016.02.008] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 12/12/2015] [Accepted: 02/16/2016] [Indexed: 02/07/2023]
Abstract
Akt is frequently hyperactivated in human cancers and is targeted for cancer therapy. However, the physiological consequences of systemic Akt isoform inhibition were not fully explored. We showed that while combined Akt1 and Akt3 deletion in adult mice is tolerated, combined Akt1 and Akt2 deletion induced rapid mortality. Akt2(-/-) mice survived hepatic Akt1 deletion but all developed spontaneous hepatocellular carcinoma (HCC), which is associated with FoxO-dependent liver injury and inflammation. The gene expression signature of HCC-bearing livers is similar to aggressive human HCC. Consistently, neither Akt1(-/-) nor Akt2(-/-) mice are resistant to diethylnitrosamine-induced hepatocarcinogenesis, and Akt2(-/-) mice display a high incidence of lung metastasis. Thus, in contrast to other cancers, hepatic Akt inhibition induces liver injury that could promote HCC.
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Affiliation(s)
- Qi Wang
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Wan-Ni Yu
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Xinyu Chen
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Xiao-Ding Peng
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Sang-Min Jeon
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Morris J Birnbaum
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Institute for Diabetes, Obesity and Metabolism, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Grace Guzman
- Department of Pathology, College of Medicine, Cancer Center, University of Illinois Hospital and Health Science Chicago, Chicago, IL 60612, USA
| | - Nissim Hay
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA; Research & Development Section, Jesse Brown VA Medical Center, Chicago, IL 60612, USA.
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26
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Erdman VV, Nasibullin TR, Tuktarova IA, Somova RS, Mustafina OE. [Analysis of FOXO1A and FOXO3A Gene Allele Association with Human Longevity]. Genetika 2016; 52:474-481. [PMID: 27529982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Seeking human longevity association with gene polymorphisms in transcription factors in the Tatar ethnic group, we conducted an analysis for age-related genotype, frequencies in polymorphic sites of FOXO1A (rs4943794, 72327C>G) and FOXO3A (rs3800231, 35-2764A>G) genes. Genotyping was conducted by using the PCR-RFLP approach. According to the results of logistic regression analysis, during maturity and old age periods, a decrease in the number of FOXO1A*G/*G (OR = 0.984, P = 0.004) genotype carriers occurs and an increase in the number of FOXO1A*C/*G (OR = 1.035, P = 0.014) and FOXO1A*C/*C (OR = 1.024, P = 0.033) genotype carriers occurs in the sample of subjects before gender adjustments. In the sample of long-livers, the number of FOXO1A*C/*C (OR = 0.772, P = 0.028) genotype carriers decreased among women, while the number of FOXO3A*G/*G (OR = 1.008, P = 0.0001) genotype carriers increased among both men and women. Therefore, the FOXO1A gene polymorphic site rs4943794 is associated with an acquisition of old and senescent age in a sample before gender adjustments and with women's longevity. FOXO3A gene polymorphic site rs3800231 is associated with longevity in both women and men.
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27
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Wu Y, Dong G, Xiao W, Xiao E, Miao F, Syverson A, Missaghian N, Vafa R, Cabrera-Ortega AA, Rossa C, Graves DT. Effect of Aging on Periodontal Inflammation, Microbial Colonization, and Disease Susceptibility. J Dent Res 2016; 95:460-6. [PMID: 26762510 PMCID: PMC4802783 DOI: 10.1177/0022034515625962] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Periodontitis is a chronic inflammatory disease induced by a biofilm that forms on the tooth surface. Increased periodontal disease is associated with aging. We investigated the effect of aging on challenge by oral pathogens, examining the host response, colonization, and osteoclast numbers in aged versus young mice. We also compared the results with mice with lineage-specific deletion of the transcription factor FOXO1, which reduces dendritic cell (DC) function. Periodontitis was induced by oral inoculation of Porphyromonas gingivalis and Fusobacterium nucleatum in young (4 to 5 mo) and aged (14 to 15 mo) mice. Aged mice as well as mice with reduced DC function had decreased numbers of DCs in lymph nodes, indicative of a diminished host response. In vitro studies suggest that reduced DC numbers in lymph nodes of aged mice may involve the effect of advanced glycation end products on DC migration. Surprisingly, aged mice but not mice with genetically altered DC function had greater production of antibody to P. gingivalis, greater IL-12 expression, and more plasma cells in lymph nodes following oral inoculation as compared with young mice. The greater adaptive immune response in aged versus young mice was linked to enhanced levels of P. gingivalis and reduced bacterial diversity. Thus, reduced bacterial diversity in aged mice may contribute to increased P. gingivalis colonization following inoculation and increased periodontal disease susceptibility, reflected by higher TNF levels and osteoclast numbers in the periodontium of aged versus young mice.
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Affiliation(s)
- Y Wu
- State Key Laboratory of Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, China Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - G Dong
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - W Xiao
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA Department of Periodontology, Peking University School and Hospital of Stomatology, Beijing, China
| | - E Xiao
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, China
| | - F Miao
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA Shanxi Province People's Hospital, Taiyuan, China
| | - A Syverson
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - N Missaghian
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - R Vafa
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - A A Cabrera-Ortega
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara-UNESP, Araraquara, Brazil
| | - C Rossa
- Department of Diagnosis and Surgery, School of Dentistry at Araraquara-UNESP, Araraquara, Brazil
| | - D T Graves
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
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Zhang T, Kim DH, Xiao X, Lee S, Gong Z, Muzumdar R, Calabuig-Navarro V, Yamauchi J, Harashima H, Wang R, Bottino R, Alvarez-Perez JC, Garcia-Ocaña A, Gittes G, Dong HH. FoxO1 Plays an Important Role in Regulating β-Cell Compensation for Insulin Resistance in Male Mice. Endocrinology 2016; 157:1055-70. [PMID: 26727107 PMCID: PMC4769368 DOI: 10.1210/en.2015-1852] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
β-Cell compensation is an essential mechanism by which β-cells increase insulin secretion for overcoming insulin resistance to maintain euglycemia in obesity. Failure of β-cells to compensate for insulin resistance contributes to insulin insufficiency and overt diabetes. To understand the mechanism of β-cell compensation, we characterized the role of forkhead box O1 (FoxO1) in β-cell compensation in mice under physiological and pathological conditions. FoxO1 is a key transcription factor that serves as a nutrient sensor for integrating insulin signaling to cell metabolism, growth, and proliferation. We showed that FoxO1 improved β-cell compensation via 3 distinct mechanisms by increasing β-cell mass, enhancing β-cell glucose sensing, and augmenting β-cell antioxidative function. These effects accounted for increased glucose-stimulated insulin secretion and enhanced glucose tolerance in β-cell-specific FoxO1-transgenic mice. When fed a high-fat diet, β-cell-specific FoxO1-transgenic mice were protected from developing fat-induced glucose disorder. This effect was attributable to increased β-cell mass and function. Furthermore, we showed that FoxO1 activity was up-regulated in islets, correlating with the induction of physiological β-cell compensation in high-fat-induced obese C57BL/6J mice. These data characterize FoxO1 as a pivotal factor for orchestrating physiological adaptation of β-cell mass and function to overnutrition and obesity.
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Affiliation(s)
- Ting Zhang
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - Dae Hyun Kim
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - Xiangwei Xiao
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - Sojin Lee
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - Zhenwei Gong
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - Radhika Muzumdar
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - Virtu Calabuig-Navarro
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - Jun Yamauchi
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - Hideyoshi Harashima
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - Rennian Wang
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - Rita Bottino
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - Juan Carlos Alvarez-Perez
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - Adolfo Garcia-Ocaña
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - George Gittes
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
| | - H Henry Dong
- Division of Pediatric Endocrinology (T.Z., D.H.K., S.L., Z.G., R.M., V.C.-N., J.Y., H.H.D.), Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Molecular Inflammation Research Center for Aging Intervention (D.H.K.), College of Pharmacy, Pusan National University, Busan, 609-735 Korea; Division of Pediatric Surgery (X.X., G.G.), Department of Surgery, Children's Hospital of Pittsburgh of UPMC, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224; Laboratory for Molecular Design of Pharmaceutics (J.Y., H.H.), Faculty of Pharmaceutical Sciences, Hokkaido University, Sapporo, Hokkaido, 060-0812 Japan; Department of Physiology and Pharmacology (R.W.), University of Western Ontario, London, Ontario, N6C 2V5 Canada; Institute of Cellular Therapeutics (R.B.), Allegheny Health Network, Pittsburgh, Pennsylvania 15212; and Diabetes, Obesity and Metabolism Institute (J.C.A.-P., A.G.-O.), Division of Endocrinology, Diabetes and Bone Disease, Department of Medicine, Icahn School of Medicine Mt Sinai, New York, New York 10029
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Cinti F, Bouchi R, Kim-Muller JY, Ohmura Y, Sandoval PR, Masini M, Marselli L, Suleiman M, Ratner LE, Marchetti P, Accili D. Evidence of β-Cell Dedifferentiation in Human Type 2 Diabetes. J Clin Endocrinol Metab 2016; 101:1044-54. [PMID: 26713822 PMCID: PMC4803182 DOI: 10.1210/jc.2015-2860] [Citation(s) in RCA: 368] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
CONTEXT Diabetes is associated with a deficit of insulin-producing β-cells. Animal studies show that β-cells become dedifferentiated in diabetes, reverting to a progenitor-like stage, and partly converting to other endocrine cell types. OBJECTIVE To determine whether similar processes occur in human type 2 diabetes, we surveyed pancreatic islets from 15 diabetic and 15 nondiabetic organ donors. DESIGN We scored dedifferentiation using markers of endocrine lineage, β-cell-specific transcription factors, and a newly identified endocrine progenitor cell marker, aldehyde dehydrogenase 1A3. RESULTS By these criteria, dedifferentiated cells accounted for 31.9% of β-cells in type 2 diabetics vs 8.7% in controls, and for 16.8% vs 6.5% of all endocrine cells (P < .001). The number of aldehyde dehydrogenase 1A3-positive/hormone-negative cells was 3-fold higher in diabetics compared with controls. Moreover, β-cell-specific transcription factors were ectopically found in glucagon- and somatostatin-producing cells of diabetic subjects. CONCLUSIONS The data support the view that pancreatic β-cells become dedifferentiated and convert to α- and δ-"like" cells in human type 2 diabetes. The findings should prompt a reassessment of goals in the prevention and treatment of β-cell dysfunction.
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Affiliation(s)
- Francesca Cinti
- Departments of Medicine (F.C., R.B., J.Y.K.-M., D.A.) and Surgery (Y.O., P.R.S., L.E.R.), Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Clinical and Experimental Medicine (F.C.), Università Politecnica delle Marche, Ancona, Italy; and Department of Clinical and Experimental Medicine (M.M., L.M., M.S., P.M.), Islet Cell Laboratory, University of Pisa, 56100 Pisa, Italy
| | - Ryotaro Bouchi
- Departments of Medicine (F.C., R.B., J.Y.K.-M., D.A.) and Surgery (Y.O., P.R.S., L.E.R.), Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Clinical and Experimental Medicine (F.C.), Università Politecnica delle Marche, Ancona, Italy; and Department of Clinical and Experimental Medicine (M.M., L.M., M.S., P.M.), Islet Cell Laboratory, University of Pisa, 56100 Pisa, Italy
| | - Ja Young Kim-Muller
- Departments of Medicine (F.C., R.B., J.Y.K.-M., D.A.) and Surgery (Y.O., P.R.S., L.E.R.), Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Clinical and Experimental Medicine (F.C.), Università Politecnica delle Marche, Ancona, Italy; and Department of Clinical and Experimental Medicine (M.M., L.M., M.S., P.M.), Islet Cell Laboratory, University of Pisa, 56100 Pisa, Italy
| | - Yoshiaki Ohmura
- Departments of Medicine (F.C., R.B., J.Y.K.-M., D.A.) and Surgery (Y.O., P.R.S., L.E.R.), Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Clinical and Experimental Medicine (F.C.), Università Politecnica delle Marche, Ancona, Italy; and Department of Clinical and Experimental Medicine (M.M., L.M., M.S., P.M.), Islet Cell Laboratory, University of Pisa, 56100 Pisa, Italy
| | - P R Sandoval
- Departments of Medicine (F.C., R.B., J.Y.K.-M., D.A.) and Surgery (Y.O., P.R.S., L.E.R.), Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Clinical and Experimental Medicine (F.C.), Università Politecnica delle Marche, Ancona, Italy; and Department of Clinical and Experimental Medicine (M.M., L.M., M.S., P.M.), Islet Cell Laboratory, University of Pisa, 56100 Pisa, Italy
| | - Matilde Masini
- Departments of Medicine (F.C., R.B., J.Y.K.-M., D.A.) and Surgery (Y.O., P.R.S., L.E.R.), Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Clinical and Experimental Medicine (F.C.), Università Politecnica delle Marche, Ancona, Italy; and Department of Clinical and Experimental Medicine (M.M., L.M., M.S., P.M.), Islet Cell Laboratory, University of Pisa, 56100 Pisa, Italy
| | - Lorella Marselli
- Departments of Medicine (F.C., R.B., J.Y.K.-M., D.A.) and Surgery (Y.O., P.R.S., L.E.R.), Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Clinical and Experimental Medicine (F.C.), Università Politecnica delle Marche, Ancona, Italy; and Department of Clinical and Experimental Medicine (M.M., L.M., M.S., P.M.), Islet Cell Laboratory, University of Pisa, 56100 Pisa, Italy
| | - Mara Suleiman
- Departments of Medicine (F.C., R.B., J.Y.K.-M., D.A.) and Surgery (Y.O., P.R.S., L.E.R.), Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Clinical and Experimental Medicine (F.C.), Università Politecnica delle Marche, Ancona, Italy; and Department of Clinical and Experimental Medicine (M.M., L.M., M.S., P.M.), Islet Cell Laboratory, University of Pisa, 56100 Pisa, Italy
| | - Lloyd E Ratner
- Departments of Medicine (F.C., R.B., J.Y.K.-M., D.A.) and Surgery (Y.O., P.R.S., L.E.R.), Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Clinical and Experimental Medicine (F.C.), Università Politecnica delle Marche, Ancona, Italy; and Department of Clinical and Experimental Medicine (M.M., L.M., M.S., P.M.), Islet Cell Laboratory, University of Pisa, 56100 Pisa, Italy
| | - Piero Marchetti
- Departments of Medicine (F.C., R.B., J.Y.K.-M., D.A.) and Surgery (Y.O., P.R.S., L.E.R.), Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Clinical and Experimental Medicine (F.C.), Università Politecnica delle Marche, Ancona, Italy; and Department of Clinical and Experimental Medicine (M.M., L.M., M.S., P.M.), Islet Cell Laboratory, University of Pisa, 56100 Pisa, Italy
| | - Domenico Accili
- Departments of Medicine (F.C., R.B., J.Y.K.-M., D.A.) and Surgery (Y.O., P.R.S., L.E.R.), Columbia University College of Physicians and Surgeons, New York, New York 10032; Department of Clinical and Experimental Medicine (F.C.), Università Politecnica delle Marche, Ancona, Italy; and Department of Clinical and Experimental Medicine (M.M., L.M., M.S., P.M.), Islet Cell Laboratory, University of Pisa, 56100 Pisa, Italy
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Garg NK, Tyagi RK, Singh B, Sharma G, Nirbhavane P, Kushwah V, Jain S, Katare OP. Nanostructured lipid carrier mediates effective delivery of methotrexate to induce apoptosis of rheumatoid arthritis via NF-κB and FOXO1. Int J Pharm 2016; 499:301-320. [PMID: 26768725 DOI: 10.1016/j.ijpharm.2015.12.061] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 11/24/2015] [Accepted: 12/21/2015] [Indexed: 02/07/2023]
Abstract
Present study was designed to develop novel nano-structured lipid carriers (NLCs) formulated by lipid mixture and chemical permeation enhancer-based hydrogel for an effective transdermal delivery of methotrexate (MTX). The prepared NLCs were optimized with different preparative variables such as particle size <200 nm, poly-dispersity index (PDI) <0.2, and entrapment efficiency ∼85%. The drug incorporated into NLCs-gel base showed excellent spread ability without any grittiness during rheological behavior and texture profile analysis. The in vitro release showed biphasic release pattern with initial fast release of drug (>50%) in 8h followed by sustained release (up to 85%) by the end of 48thh. NLCs showed greater uptake in human hyper-proliferative keratinocyte cell line (HaCaT). NLCs showed increased expression of inflammatory mediators as well asapoptosis in U937 monocytic cells. The greater expression of pro-apoptotic gene Bim regulated by NF-κB-IkB and FOXO1 is supported by fold regulations calculated for various apoptotic and pro-inflammatory biomarkers carried out by RT-PCR. The immunocytochemistry to detect IL-6 expression and immunofluorescence assay suggested that induced apoptosis occurs in experimentally induced in vitro arthritis model treated with NLCs-MTX. We saw reduced inflammation and triggered apoptosis through NF-κB & FOXO1 pathways induced by MTX loaded NLCs in rheumatoid arthritic cells. In addition, formulated NLCs exhibit better skin permeation with higher permeation flux & enhancement ratio as shown by confocal laser scanning microscopy (CLSM). Moreover, histopathological examinations of skin are suggestive of safety potential of NLCs.
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Affiliation(s)
- Neeraj K Garg
- Drug Delivery Research Group, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh 160014, India
| | - Rajeev K Tyagi
- Department of Periodontics, College of Dental Medicine Georgia Regents University, 1120, 15th Street, Augusta, GA 30912, USA; Institute of Science, Nirma University, Sarkhej-Gandhinagar Highway, Ahmedabad, 382 481 Gujarat, India
| | - Bhupinder Singh
- Drug Delivery Research Group, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh 160014, India; UGC-Centre of Excellence in Applications of Nanomaterials, Nanoparticles & Nanocomposites (Biomedical Sciences), Panjab University, Chandigarh 160 014, India
| | - Gajanand Sharma
- Drug Delivery Research Group, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh 160014, India
| | - Pradip Nirbhavane
- Drug Delivery Research Group, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh 160014, India
| | - Varun Kushwah
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar (Mohali), Punjab 160062, India
| | - Sanyog Jain
- Centre for Pharmaceutical Nanotechnology, Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar (Mohali), Punjab 160062, India
| | - Om Prakash Katare
- Drug Delivery Research Group, University Institute of Pharmaceutical Sciences, UGC Centre of Advanced Studies, Panjab University, Chandigarh 160014, India.
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Fodor T, Szántó M, Abdul-Rahman O, Nagy L, Dér Á, Kiss B, Bai P. Combined Treatment of MCF-7 Cells with AICAR and Methotrexate, Arrests Cell Cycle and Reverses Warburg Metabolism through AMP-Activated Protein Kinase (AMPK) and FOXO1. PLoS One 2016; 11:e0150232. [PMID: 26919657 PMCID: PMC4769015 DOI: 10.1371/journal.pone.0150232] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 02/10/2016] [Indexed: 12/17/2022] Open
Abstract
Cancer cells are characterized by metabolic alterations, namely, depressed mitochondrial oxidation, enhanced glycolysis and pentose phosphate shunt flux to support rapid cell growth, which is called the Warburg effect. In our study we assessed the metabolic consequences of a joint treatment of MCF-7 breast cancer cells with AICAR, an inducer of AMP-activated kinase (AMPK) jointly with methotrexate (MTX), a folate-analog antimetabolite that blunts de novo nucleotide synthesis. MCF7 cells, a model of breast cancer cells, were resistant to the individual application of AICAR or MTX, however combined treatment of AICAR and MTX reduced cell proliferation. Prolonged joint application of AICAR and MTX induced AMPK and consequently enhanced mitochondrial oxidation and reduced the rate of glycolysis. These metabolic changes suggest an anti-Warburg rearrangement of metabolism that led to the block of the G1/S and the G2/M transition slowing down cell cycle. The slowdown of cell proliferation was abolished when mitotropic transcription factors, PGC-1α, PGC-1β or FOXO1 were silenced. In human breast cancers higher expression of AMPKα and FOXO1 extended survival. AICAR and MTX exerts similar additive antiproliferative effect on other breast cancer cell lines, such as SKBR and 4T1 cells, too. Our data not only underline the importance of Warburg metabolism in breast cancer cells but nominate the AICAR+MTX combination as a potential cytostatic regime blunting Warburg metabolism. Furthermore, we suggest the targeting of AMPK and FOXO1 to combat breast cancer.
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Affiliation(s)
- Tamás Fodor
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, H-4032, Hungary
| | - Magdolna Szántó
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, H-4032, Hungary
- MTA-DE Cell Biology and Signaling Research Group, Debrecen, H-4032, Hungary
| | - Omar Abdul-Rahman
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, H-4032, Hungary
- MTA-DE Cell Biology and Signaling Research Group, Debrecen, H-4032, Hungary
| | - Lilla Nagy
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, H-4032, Hungary
- MTA-DE Cell Biology and Signaling Research Group, Debrecen, H-4032, Hungary
| | - Ádám Dér
- Department of Oncology, Section of Radiation Therapy, Faculty of Medicine, University of Debrecen, Debrecen, H-4032, Hungary
| | - Borbála Kiss
- Department of Dermatology, Faculty of Medicine, University of Debrecen, Debrecen, H-4032, Hungary
| | - Peter Bai
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, H-4032, Hungary
- MTA-DE Lendület Laboratory of Cellular Metabolism, Debrecen, H-4032, Hungary
- Research Center for Molecular Medicine, University of Debrecen, Debrecen, H-4032, Hungary
- * E-mail:
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Tobita T, Guzman-Lepe J, Takeishi K, Nakao T, Wang Y, Meng F, Deng CX, Collin de l’Hortet A, Soto-Gutierrez A. SIRT1 Disruption in Human Fetal Hepatocytes Leads to Increased Accumulation of Glucose and Lipids. PLoS One 2016; 11:e0149344. [PMID: 26890260 PMCID: PMC4758736 DOI: 10.1371/journal.pone.0149344] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Accepted: 01/29/2016] [Indexed: 01/23/2023] Open
Abstract
There are unprecedented epidemics of obesity, such as type II diabetes and non-alcoholic fatty liver diseases (NAFLD) in developed countries. A concerning percentage of American children are being affected by obesity and NAFLD. Studies have suggested that the maternal environment in utero might play a role in the development of these diseases later in life. In this study, we documented that inhibiting SIRT1 signaling in human fetal hepatocytes rapidly led to an increase in intracellular glucose and lipids levels. More importantly, both de novo lipogenesis and gluconeogenesis related genes were upregulated upon SIRT1 inhibition. The AKT/FOXO1 pathway, a major negative regulator of gluconeogenesis, was decreased in the human fetal hepatocytes inhibited for SIRT1, consistent with the higher level of gluconeogenesis. These results indicate that SIRT1 is an important regulator of lipid and carbohydrate metabolisms within human fetal hepatocytes, acting as an adaptive transcriptional response to environmental changes.
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Affiliation(s)
- Takamasa Tobita
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Jorge Guzman-Lepe
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Kazuki Takeishi
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Toshimasa Nakao
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Yang Wang
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Department of Hepatobiliary Surgery, Peking University People’s Hospital, Beijing, China
| | - Fanying Meng
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
| | - Chu-Xia Deng
- Faculty of Health Sciences, University of Macau, Avenida da Universidade, Taipa, Macau, China
| | - Alexandra Collin de l’Hortet
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- * E-mail: (ACH); (ASG)
| | - Alejandro Soto-Gutierrez
- Department of Pathology, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- Thomas E Starzl Transplant Institute, University of Pittsburgh, Pittsburgh, Pennsylvania, United States of America
- McGowan Institute for Regenerative Medicine; Pittsburgh, Pennsylvania, United States of America
- * E-mail: (ACH); (ASG)
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Kumar S, Pamulapati H, Tikoo K. Fatty acid induced metabolic memory involves alterations in renal histone H3K36me2 and H3K27me3. Mol Cell Endocrinol 2016; 422:233-242. [PMID: 26747726 DOI: 10.1016/j.mce.2015.12.019] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Revised: 12/19/2015] [Accepted: 12/25/2015] [Indexed: 12/14/2022]
Abstract
Accumulating evidence suggest that diabetic complications persist even after the maintenance of normal glucose levels. However, the molecular mechanisms involved are still unclear. In the present study, we have investigated the molecular mechanism behind the presence of insulin resistance (IR) condition even after normalization of circulating lipids levels both in vivo and in vitro. Persistent inhibition of insulin signalling in absence of elevated circulating lipids level confirms the presence of metabolic memory in our model of IR. IR in human urine derived podocyte-like epithelial cells (HUPECs) was developed by incubating cells with palmitate (750 μM) for 24 h and in SD rats by feeding high fat diet for 16 weeks. Inhibition of insulin induced FOXO1 (regulator of gluconeogenic genes) degradation persisted even after 48 h of palmitate removal from the culture media. Metabolic memory by palmitate was found to be associated with increased FOXO1 activity as evident from increased expression of FOXO1 target genes such as PDK4, p21, G6Pc and IGFBP1. To understand the reason for prolonged activation of FOXO1 and its target genes, chromatin immuno-precipitation (ChIP) was performed with histone H3K36me2 and H3K27me3 antibodies. ChIP assay shows persistent increase in abundance of histone H3K36me2 on promoter region of FOXO1. We also show decreased abundance of histone H3K27me3 on promoter region of FOXO1, in the kidneys of HFD fed rats, which persisted even after 8 weeks of diet reversal. Taken together, we provide first evidence that circulating lipids generate metabolic memory possibly by altering the abundance of histone H3K36me2 and H3K27me3 on FOXO1 promoter.
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Affiliation(s)
- Sandeep Kumar
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Mohali, Punjab, 160062, India.
| | - Himani Pamulapati
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Mohali, Punjab, 160062, India.
| | - Kulbhushan Tikoo
- Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research, S.A.S. Nagar, Mohali, Punjab, 160062, India.
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Saben JL, Asghar Z, Rhee JS, Drury A, Scheaffer S, Moley KH. Excess Maternal Fructose Consumption Increases Fetal Loss and Impairs Endometrial Decidualization in Mice. Endocrinology 2016; 157:956-68. [PMID: 26677880 PMCID: PMC4733112 DOI: 10.1210/en.2015-1618] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The most significant increase in metabolic syndrome over the previous decade occurred in women of reproductive age, which is alarming given that metabolic syndrome is associated with reproductive problems including subfertility and early pregnancy loss. Individuals with metabolic syndrome often consume excess fructose, and several studies have concluded that excess fructose intake contributes to metabolic syndrome development. Here, we examined the effects of increased fructose consumption on pregnancy outcomes in mice. Female mice fed a high-fructose diet (HFrD) for 6 weeks developed glucose intolerance and mild fatty liver but did not develop other prominent features of metabolic syndrome such as weight gain, hyperglycemia, and hyperinsulinemia. Upon mating, HFrD-exposed mice had lower pregnancy rates and smaller litters at midgestation than chow-fed controls. To explain this phenomenon, we performed artificial decidualization experiments and found that HFrD consumption impaired decidualization. This appeared to be due to decreased circulating progesterone as exogenous progesterone administration rescued decidualization. Furthermore, HFrD intake was associated with decreased bone morphogenetic protein 2 expression and signaling, both of which were restored by exogenous progesterone. Finally, expression of forkhead box O1 and superoxide dismutase 2 [Mn] proteins were decreased in the uteri of HFrD-fed mice, suggesting that HFrD consumption promotes a prooxidative environment in the endometrium. In summary, these data suggest that excess fructose consumption impairs murine fertility by decreasing steroid hormone synthesis and promoting an adverse uterine environment.
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Affiliation(s)
- Jessica L Saben
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Zeenat Asghar
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Julie S Rhee
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Andrea Drury
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Suzanne Scheaffer
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri 63110
| | - Kelle H Moley
- Department of Obstetrics and Gynecology, Washington University School of Medicine, St. Louis, Missouri 63110
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Zhang L, Tschumi BO, Lopez-Mejia IC, Oberle SG, Meyer M, Samson G, Rüegg MA, Hall MN, Fajas L, Zehn D, Mach JP, Donda A, Romero P. Mammalian Target of Rapamycin Complex 2 Controls CD8 T Cell Memory Differentiation in a Foxo1-Dependent Manner. Cell Rep 2016; 14:1206-1217. [PMID: 26804903 DOI: 10.1016/j.celrep.2015.12.095] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 11/23/2015] [Accepted: 12/18/2015] [Indexed: 11/18/2022] Open
Abstract
Upon infection, antigen-specific naive CD8 T cells are activated and differentiate into short-lived effector cells (SLECs) and memory precursor cells (MPECs). The underlying signaling pathways remain largely unresolved. We show that Rictor, the core component of mammalian target of rapamycin complex 2 (mTORC2), regulates SLEC and MPEC commitment. Rictor deficiency favors memory formation and increases IL-2 secretion capacity without dampening effector functions. Moreover, mTORC2-deficient memory T cells mount more potent recall responses. Enhanced memory formation in the absence of mTORC2 was associated with Eomes and Tcf-1 upregulation, repression of T-bet, enhanced mitochondrial spare respiratory capacity, and fatty acid oxidation. This transcriptional and metabolic reprogramming is mainly driven by nuclear stabilization of Foxo1. Silencing of Foxo1 reversed the increased MPEC differentiation and IL-2 production and led to an impaired recall response of Rictor KO memory T cells. Therefore, mTORC2 is a critical regulator of CD8 T cell differentiation and may be an important target for immunotherapy interventions.
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Affiliation(s)
- Lianjun Zhang
- Ludwig Center for Cancer Research, University of Lausanne, 1066 Epalinges, Switzerland.
| | - Benjamin O Tschumi
- Ludwig Center for Cancer Research, University of Lausanne, 1066 Epalinges, Switzerland
| | | | | | - Marten Meyer
- German Cancer Research Center, 69120 Heidelberg, Germany
| | - Guerric Samson
- Ludwig Center for Cancer Research, University of Lausanne, 1066 Epalinges, Switzerland
| | - Markus A Rüegg
- Biozentrum, University of Basel, 4056 Basel, Switzerland
| | - Michael N Hall
- Biozentrum, University of Basel, 4056 Basel, Switzerland
| | - Lluis Fajas
- Department of Physiology, University of Lausanne, 1011 Lausanne, Switzerland
| | - Dietmar Zehn
- Swiss Vaccine Research Institute, 1066 Epalinges, Switzerland
| | - Jean-Pierre Mach
- Department of Biochemistry, University of Lausanne, 1066 Epalinges, Switzerland
| | - Alena Donda
- Ludwig Center for Cancer Research, University of Lausanne, 1066 Epalinges, Switzerland
| | - Pedro Romero
- Ludwig Center for Cancer Research, University of Lausanne, 1066 Epalinges, Switzerland.
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Abstract
Uridine is a pyrimidine nucleoside that exerts restorative functions in tissues under stress. Short-term co-administration of uridine with multiple unrelated drugs prevents drug-induced liver lipid accumulation. Uridine has the ability to modulate liver metabolism; however, the precise mechanism has not been delineated. In this study, long-term effects of uridine on liver metabolism were examined in both HepG2 cell cultures and C57BL/6J mice. We report that uridine administration was associated with O-GlcNAc modification of FOXO1, increased gluconeogenesis, reduced insulin signaling activity, and reduced expression of a liver-specific fatty acid binding protein FABP1. Long-term uridine feeding induced systemic glucose intolerance and severe liver lipid accumulation in mice. Our findings suggest that the therapeutic potentials of uridine should be designed for short-term acute administration.
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Affiliation(s)
- Yasuyo Urasaki
- Department of Biomedical Sciences, College of Medicine, Roseman University of Health Sciences, 10530 Discovery Drive, Las Vegas, Nevada, 89135, United States of America
| | - Giuseppe Pizzorno
- Desert Research Institute, 10530 Discovery Drive, Las Vegas, Nevada, 89135, United States of America
| | - Thuc T. Le
- Department of Biomedical Sciences, College of Medicine, Roseman University of Health Sciences, 10530 Discovery Drive, Las Vegas, Nevada, 89135, United States of America
- * E-mail:
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Tsai JS, Chao CH, Lin LY. Cadmium Activates Multiple Signaling Pathways That Coordinately Stimulate Akt Activity to Enhance c-Myc mRNA Stability. PLoS One 2016; 11:e0147011. [PMID: 26751215 PMCID: PMC4709241 DOI: 10.1371/journal.pone.0147011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Accepted: 12/28/2015] [Indexed: 01/07/2023] Open
Abstract
Cadmium is a known environmental carcinogen. Exposure of Cd leads to the activation of several proto-oncogenes in cells. We investigated here the mechanism of c-Myc expression in hepatic cells under Cd treatment. The c-Myc protein and mRNA levels increased in dose- and time-dependent manners in HepG2 cells with Cd treatment. This increase was due to an increase in c-Myc mRNA stability. To explore the mechanism involved in enhancing the mRNA stability, several cellular signaling factors that evoked by Cd treatment were analyzed. PI3K, p38, ERK and JNK were activated by Cd. However, ERK did not participate in the Cd-induced c-Myc expression. Further analysis revealed that mTORC2 was a downstream factor of p38. PI3K, JNK and mTORC2 coordinately activated Akt. Akt was phosphorylated at Thr450 in the untreated cells. Cd treatment led to additional phosphorylation at Thr308 and Ser473. Blocking any of the three signaling factors resulted in the reduction of phosphorylation level at all three Akt sites. The activated Akt phosphorylated Foxo1 and allowed the modified protein to translocate into the cytoplasm. We conclude that Cd-induced accumulation of c-Myc requires the activation of several signaling pathways. The signals act coordinately for Akt activation and drive the Foxo1 from the nucleus to the cytoplasm. Reduction of Foxo1 in the nucleus reduces the transcription of its target genes that may affect c-Myc mRNA stability, resulting in a higher accumulation of the c-Myc proteins.
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Affiliation(s)
- Jia-Shiuan Tsai
- Institute of Molecular and Cellular Biology, and Department of Life Science, National Tsing Hua University, Hsinchu, Taiwan, ROC
| | - Cheng-Han Chao
- Division of Nephrology, Department of Internal Medicine, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu, Taiwan, ROC
| | - Lih-Yuan Lin
- Institute of Molecular and Cellular Biology, and Department of Life Science, National Tsing Hua University, Hsinchu, Taiwan, ROC
- * E-mail:
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38
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Liu Z, Li P, Zhao ZH, Zhang Y, Ma ZM, Wang SX. Vitamin B6 Prevents Endothelial Dysfunction, Insulin Resistance, and Hepatic Lipid Accumulation in Apoe (-/-) Mice Fed with High-Fat Diet. J Diabetes Res 2016; 2016:1748065. [PMID: 26881239 PMCID: PMC4735993 DOI: 10.1155/2016/1748065] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Revised: 10/08/2015] [Accepted: 10/21/2015] [Indexed: 12/22/2022] Open
Abstract
Backgrounds. VitB6 deficiency has been associated with a number of adverse health effects. However, the effects of VitB6 in metabolic syndrome are poorly understood. Methods. VitB6 (50 mg/kg/day) was given to Apoe (-/-) mice with hkdigh-fat diet (HFD) for 8 weeks. Endothelial dysfunction, insulin resistance, and hepatic lipid contents were determined. Results. VitB6 administration remarkably increased acetylcholine-induced endothelium-dependent relaxation and decreased random blood glucose level in Apoe (-/-) mice fed with HFD. In addition, VitB6 improved the tolerance of glucose and insulin, normalized the histopathology of liver, and reduced hepatic lipid accumulation but did not affect the liver functions. Clinical and biochemical analysis indicated that the levels of VitB6 were decreased in patients with fatty liver. Conclusions. Vitamin B6 prevents endothelial dysfunction, insulin resistance, and hepatic lipid accumulation in Apoe (-/-) mice fed with HFD. Supplementation of VitB6 should be considered to prevent metabolic syndrome.
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Affiliation(s)
- Zhan Liu
- Department of Clinical Nutrition and Gastroenterology, The First Affiliated Hospital (People's Hospital of Hunan Province), Hunan Normal University, Changsha 430070, China
| | - Peng Li
- College of Pharmacy, Xinxiang Medical University, Xinxiang 453003, China
| | - Zhi-Hong Zhao
- Department of Clinical Nutrition and Gastroenterology, The First Affiliated Hospital (People's Hospital of Hunan Province), Hunan Normal University, Changsha 430070, China
| | - Yu Zhang
- Department of Clinical Nutrition and Gastroenterology, The First Affiliated Hospital (People's Hospital of Hunan Province), Hunan Normal University, Changsha 430070, China
| | - Zhi-Min Ma
- Division of Endocrinology, The Second Affiliated Hospital, Soochow University, Suzhou 215000, China
| | - Shuang-Xi Wang
- College of Pharmacy, Xinxiang Medical University, Xinxiang 453003, China
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, School of Medicine, Shandong University, Jinan 250012, China
- *Shuang-Xi Wang:
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Shukla S, Sharma A, Pandey VK, Raisuddin S, Kakkar P. Concurrent acetylation of FoxO1/3a and p53 due to sirtuins inhibition elicit Bim/PUMA mediated mitochondrial dysfunction and apoptosis in berberine-treated HepG2 cells. Toxicol Appl Pharmacol 2015; 291:70-83. [PMID: 26712469 DOI: 10.1016/j.taap.2015.12.006] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 11/09/2015] [Accepted: 12/15/2015] [Indexed: 02/04/2023]
Abstract
Post-translational modifications i.e. phosphorylation and acetylation are pivotal requirements for proper functioning of eukaryotic proteins. The current study aimed to decode the impact of acetylation/deacetylation of non-histone targets i.e. FoxO1/3a and p53 of sirtuins (NAD(+) dependent enzymes with lysine deacetylase activity) in berberine treated human hepatoma cells. Berberine (100 μM) inhibited sirtuins significantly (P<0.05) at transcriptional level as well as at translational level. Combination of nicotinamide (sirtuin inhibitor) with berberine potentiated sirtuins inhibition and increased the expression of FoxO1/3a and phosphorylation of p53 tumor suppressor protein. As sirtuins deacetylate non-histone targets including FoxO1/3a and p53, berberine increased the acetylation load of FoxO1/3a and p53 proteins. Acetylated FoxO and p53 proteins transcriptionally activate BH3-only proteins Bim and PUMA (3.89 and 3.87 fold respectively, P<0.001), which are known as direct activator of pro-apoptotic Bcl-2 family protein Bax that culminated into mitochondria mediated activation of apoptotic cascade. Bim/PUMA knock-down showed no changes in sirtuins' expression while cytotoxicity induced by berberine and nicotinamide was curtailed up to 28.3% (P<0.001) and it restored pro/anti apoptotic protein ratio in HepG2 cells. Sirtuins inhibition was accompanied by decline in NAD(+)/NADH ratio, ATP generation, enhanced ROS production and decreased mitochondrial membrane potential. TEM analysis confirmed mitochondrial deterioration and cell damage. SRT-1720 (1-10 μM), a SIRT-1 activator, when pre-treated with berberine (25 μM), reversed sirtuins expression comparable to control and significantly restored the cell viability (P<0.05). Thus, our findings suggest that berberine mediated sirtuins inhibition resulting into FoxO1/3a and p53 acetylation followed by BH3-only protein Bim/PUMA activation may in part be responsible for mitochondria-mediated apoptosis.
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Affiliation(s)
- Shatrunajay Shukla
- Herbal Research Section, CSIR - Indian Institute of Toxicology Research, Post Box No. 80, Mahatma Gandhi Marg, Lucknow-226001, India; Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi -110062, India
| | - Ankita Sharma
- Herbal Research Section, CSIR - Indian Institute of Toxicology Research, Post Box No. 80, Mahatma Gandhi Marg, Lucknow-226001, India
| | - Vivek Kumar Pandey
- Herbal Research Section, CSIR - Indian Institute of Toxicology Research, Post Box No. 80, Mahatma Gandhi Marg, Lucknow-226001, India; Academy of Scientific and Innovative Research, India
| | - Sheikh Raisuddin
- Department of Medical Elementology and Toxicology, Jamia Hamdard (Hamdard University), Hamdard Nagar, New Delhi -110062, India
| | - Poonam Kakkar
- Herbal Research Section, CSIR - Indian Institute of Toxicology Research, Post Box No. 80, Mahatma Gandhi Marg, Lucknow-226001, India; Academy of Scientific and Innovative Research, India.
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40
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Lartey LJ, Werneck-de-Castro JP, O-Sullivan I, Unterman TG, Bianco AC. Coupling between Nutrient Availability and Thyroid Hormone Activation. J Biol Chem 2015; 290:30551-61. [PMID: 26499800 PMCID: PMC4683275 DOI: 10.1074/jbc.m115.665505] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 10/13/2015] [Indexed: 12/18/2022] Open
Abstract
The activity of the thyroid gland is stimulated by food availability via leptin-induced thyrotropin-releasing hormone/thyroid-stimulating hormone expression. Here we show that food availability also stimulates thyroid hormone activation by accelerating the conversion of thyroxine to triiodothyronine via type 2 deiodinase in mouse skeletal muscle and in a cell model transitioning from 0.1 to 10% FBS. The underlying mechanism is transcriptional derepression of DIO2 through the mTORC2 pathway as defined in rictor knockdown cells. In cells kept in 0.1% FBS, there is DIO2 inhibition via FOXO1 binding to the DIO2 promoter. Repression of DIO2 by FOXO1 was confirmed using its specific inhibitor AS1842856 or adenoviral infection of constitutively active FOXO1. ChIP studies indicate that 4 h after 10% FBS-containing medium, FOXO1 binding markedly decreases, and the DIO2 promoter is activated. Studies in the insulin receptor FOXO1 KO mouse indicate that insulin is a key signaling molecule in this process. We conclude that FOXO1 represses DIO2 during fasting and that derepression occurs via nutritional activation of the PI3K-mTORC2-Akt pathway.
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Affiliation(s)
- Lattoya J Lartey
- From the Department of Molecular and Cellular Pharmacology, University of Miami, Miller School of Medicine, Miami, Florida 33136
| | - João Pedro Werneck-de-Castro
- the Department of Internal Medicine, Division of Endocrinology and Metabolism, Rush University Medical Center, Chicago, Illinois 60612, the Carlos Chagas Filho Biophysics Institute and School of Physical Education and Sports, Federal University of Rio de Janeiro, Rio de Janeiro 21941-599, Brazil, and
| | - InSug O-Sullivan
- the Jesse Brown Veterans Affairs Medical Center and the Department of Medicine, University of Illinois at Chicago College of Medicine, Chicago, Illinois 60612
| | - Terry G Unterman
- the Jesse Brown Veterans Affairs Medical Center and the Department of Medicine, University of Illinois at Chicago College of Medicine, Chicago, Illinois 60612
| | - Antonio C Bianco
- the Department of Internal Medicine, Division of Endocrinology and Metabolism, Rush University Medical Center, Chicago, Illinois 60612,
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Sander S, Chu VT, Yasuda T, Franklin A, Graf R, Calado DP, Li S, Imami K, Selbach M, Di Virgilio M, Bullinger L, Rajewsky K. PI3 Kinase and FOXO1 Transcription Factor Activity Differentially Control B Cells in the Germinal Center Light and Dark Zones. Immunity 2015; 43:1075-86. [PMID: 26620760 DOI: 10.1016/j.immuni.2015.10.021] [Citation(s) in RCA: 182] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 08/28/2015] [Accepted: 10/28/2015] [Indexed: 12/17/2022]
Abstract
Phosphatidylinositol 3' OH kinase (PI3K) signaling and FOXO transcription factors play opposing roles at several B cell developmental stages. We show here abundant nuclear FOXO1 expression in the proliferative compartment of the germinal center (GC), its dark zone (DZ), and PI3K activity, downregulating FOXO1, in the light zone (LZ), where cells are selected for further differentiation. In the LZ, however, FOXO1 was expressed in a fraction of cells destined for DZ reentry. Upon FOXO1 ablation or induction of PI3K activity, GCs lost their DZ, owing at least partly to downregulation of the chemokine receptor CXCR4. Although this prevented proper cyclic selection of cells in GCs, somatic hypermutation and proliferation were maintained. Class switch recombination was partly lost due to a failure of switch region targeting by activation-induced deaminase (AID).
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Affiliation(s)
- Sandrine Sander
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Alliance, Berlin-Buch 13125, Germany.
| | - Van Trung Chu
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Alliance, Berlin-Buch 13125, Germany
| | - Tomoharu Yasuda
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Alliance, Berlin-Buch 13125, Germany
| | - Andrew Franklin
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Alliance, Berlin-Buch 13125, Germany
| | - Robin Graf
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Alliance, Berlin-Buch 13125, Germany
| | - Dinis Pedro Calado
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Alliance, Berlin-Buch 13125, Germany; Cancer Research UK, London Research Institute, London WC2A 3LY, UK; Peter Gorer Department of Immunobiology, Kings College London, London SE1 9RT, UK
| | - Shuang Li
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Alliance, Berlin-Buch 13125, Germany
| | - Koshi Imami
- Proteome Dynamics, Max Delbrück Center for Molecular Medicine in the Helmholtz Alliance, Berlin-Buch 13125, Germany
| | - Matthias Selbach
- Proteome Dynamics, Max Delbrück Center for Molecular Medicine in the Helmholtz Alliance, Berlin-Buch 13125, Germany
| | - Michela Di Virgilio
- DNA Repair and Maintenance of Genome Stability, Max Delbrück Center for Molecular Medicine in the Helmholtz Alliance, Berlin-Buch 13125, Germany
| | - Lars Bullinger
- Department of Internal Medicine III, University Hospital Ulm, Ulm 89081, Germany
| | - Klaus Rajewsky
- Immune Regulation and Cancer, Max Delbrück Center for Molecular Medicine in the Helmholtz Alliance, Berlin-Buch 13125, Germany.
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Edge J, Mündel T, Pilegaard H, Hawke E, Leikis M, Lopez-Villalobos N, Oliveira RSF, Bishop DJ. Ammonium Chloride Ingestion Attenuates Exercise-Induced mRNA Levels in Human Muscle. PLoS One 2015; 10:e0141317. [PMID: 26656911 PMCID: PMC4686080 DOI: 10.1371/journal.pone.0141317] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 10/07/2015] [Indexed: 01/17/2023] Open
Abstract
Minimizing the decrease in intracellular pH during high-intensity exercise training promotes greater improvements in mitochondrial respiration. This raises the intriguing hypothesis that pH may affect the exercise-induced transcription of genes that regulate mitochondrial biogenesis. Eight males performed 10x2-min cycle intervals at 80% V˙O2peak intensity on two occasions separated by ~2 weeks. Participants ingested either ammonium chloride (ACID) or calcium carbonate (PLA) the day before and on the day of the exercise trial in a randomized, counterbalanced order, using a crossover design. Biopsies were taken from the vastus lateralis muscle before and after exercise. The mRNA level of peroxisome proliferator-activated receptor co-activator 1α (PGC-1α), citrate synthase, cytochome c and FOXO1 was elevated at rest following ACID (P<0.05). During the PLA condition, the mRNA content of mitochondrial- and glucose-regulating proteins was elevated immediately following exercise (P<0.05). In the early phase (0–2 h) of post-exercise recovery during ACID, PGC-1α, citrate synthase, cytochome C, FOXO1, GLUT4, and HKII mRNA levels were not different from resting levels (P>0.05); the difference in PGC-1α mRNA content 2 h post-exercise between ACID and PLA was not significant (P = 0.08). Thus, metabolic acidosis abolished the early post-exercise increase of PGC-1α mRNA and the mRNA of downstream mitochondrial and glucose-regulating proteins. These findings indicate that metabolic acidosis may affect mitochondrial biogenesis, with divergent responses in resting and post-exercise skeletal muscle.
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Affiliation(s)
- Johann Edge
- Department of Sport and Exercise Science, University of Auckland, Auckland, New Zealand
- School of Sport and Exercise, Massey University, Palmerston North, New Zealand
| | - Toby Mündel
- School of Sport and Exercise, Massey University, Palmerston North, New Zealand
| | - Henriette Pilegaard
- Centre of Inflammation and Metabolism (CIM), Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Emma Hawke
- Centre of Inflammation and Metabolism (CIM), Department of Biology, University of Copenhagen, Copenhagen, Denmark
| | - Murray Leikis
- Department of Renal Medicine, Wellington Hospital, Newtown, New Zealand
| | - Nicolas Lopez-Villalobos
- Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
| | - Rodrigo S. F. Oliveira
- Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Australia
| | - David J. Bishop
- Institute of Sport, Exercise and Active Living (ISEAL), Victoria University, Melbourne, Australia
- * E-mail:
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Chen J, Wang N, Dong M, Guo M, Zhao Y, Zhuo Z, Zhang C, Chi X, Pan Y, Jiang J, Tang H, Niu J, Yang D, Li Z, Han X, Wang Q, Chen X. The Metabolic Regulator Histone Deacetylase 9 Contributes to Glucose Homeostasis Abnormality Induced by Hepatitis C Virus Infection. Diabetes 2015; 64:4088-98. [PMID: 26420860 DOI: 10.2337/db15-0197] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Accepted: 07/09/2015] [Indexed: 12/15/2022]
Abstract
Class IIa histone deacetylases (HDACs), such as HDAC4, HDAC5, and HDAC7, provide critical mechanisms for regulating glucose homeostasis. Here we report that HDAC9, another class IIa HDAC, regulates hepatic gluconeogenesis via deacetylation of a Forkhead box O (FoxO) family transcription factor, FoxO1, together with HDAC3. Specifically, HDAC9 expression can be strongly induced upon hepatitis C virus (HCV) infection. HCV-induced HDAC9 upregulation enhances gluconeogenesis by promoting the expression of gluconeogenic genes, including phosphoenolpyruvate carboxykinase and glucose-6-phosphatase, indicating a major role for HDAC9 in the development of HCV-associated exaggerated gluconeogenic responses. Moreover, HDAC9 expression levels and gluconeogenic activities were elevated in livers from HCV-infected patients and persistent HCV-infected mice, emphasizing the clinical relevance of these results. Our results suggest HDAC9 is involved in glucose metabolism, HCV-induced abnormal glucose homeostasis, and type 2 diabetes.
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MESH Headings
- Acetylation
- Animals
- Biopsy, Fine-Needle
- Cell Line, Tumor
- Enzyme Induction
- Female
- Forkhead Box Protein O1
- Forkhead Transcription Factors/metabolism
- Gluconeogenesis
- Hepatitis C, Chronic/blood
- Hepatitis C, Chronic/metabolism
- Hepatitis C, Chronic/pathology
- Hepatitis C, Chronic/virology
- Histone Deacetylases/genetics
- Histone Deacetylases/metabolism
- Humans
- Insulin Resistance
- Liver/metabolism
- Liver/pathology
- Liver/virology
- Male
- Mice, Transgenic
- Occludin/antagonists & inhibitors
- Occludin/genetics
- Occludin/metabolism
- Phosphoenolpyruvate Carboxykinase (ATP)/antagonists & inhibitors
- Phosphoenolpyruvate Carboxykinase (ATP)/genetics
- Phosphoenolpyruvate Carboxykinase (ATP)/metabolism
- Phosphorylation
- Protein Processing, Post-Translational
- RNA Interference
- RNA, Viral/antagonists & inhibitors
- RNA, Viral/blood
- RNA, Viral/metabolism
- Repressor Proteins/antagonists & inhibitors
- Repressor Proteins/genetics
- Repressor Proteins/metabolism
- Tetraspanin 28/antagonists & inhibitors
- Tetraspanin 28/genetics
- Tetraspanin 28/metabolism
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Affiliation(s)
- Jizheng Chen
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Ning Wang
- Jiangsu Province Key Laboratory of Human Functional Genomics, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, China
| | - Mei Dong
- Jiangsu Province Key Laboratory of Human Functional Genomics, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, China
| | - Min Guo
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Yang Zhao
- Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Zhiyong Zhuo
- Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Chao Zhang
- Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Xiumei Chi
- Department of Hepatology, The First Hospital of Jilin University, Changchun, China
| | - Yu Pan
- Department of Hepatology, The First Hospital of Jilin University, Changchun, China
| | - Jing Jiang
- Department of Hepatology, The First Hospital of Jilin University, Changchun, China
| | - Hong Tang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Junqi Niu
- Department of Hepatology, The First Hospital of Jilin University, Changchun, China
| | - Dongliang Yang
- Department of Infectious Diseases, Wuhan Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhong Li
- Jiangsu Province Key Laboratory of Human Functional Genomics, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, China
| | - Xiao Han
- Jiangsu Province Key Laboratory of Human Functional Genomics, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, China
| | - Qian Wang
- Jiangsu Province Key Laboratory of Human Functional Genomics, Department of Biochemistry and Molecular Biology, Nanjing Medical University, Nanjing, China
| | - Xinwen Chen
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
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Gerst F, Kaiser G, Panse M, Sartorius T, Pujol A, Hennige AM, Machicao F, Lammers R, Bosch F, Häring HU, Ullrich S. Protein kinase Cδ regulates nuclear export of FOXO1 through phosphorylation of the chaperone 14-3-3ζ. Diabetologia 2015; 58:2819-31. [PMID: 26363783 DOI: 10.1007/s00125-015-3744-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 08/03/2015] [Indexed: 01/09/2023]
Abstract
AIMS/HYPOTHESIS Forkhead box protein O1 (FOXO1) is a transcription factor essential for beta cell fate. Protein kinase B-dependent phosphorylation of FOXO1 at S256 (P-FOXO1) enables its binding to 14-3-3 dimers and nuclear export. Dephosphorylated FOXO1 enters nuclei and activates pro-apoptotic genes. Since our previous observations suggest that protein kinase C delta (PKCδ) induces nuclear accumulation of FOXO1, the underlying mechanism was examined. METHODS In human islets, genetically modified mice and INS-1E cells apoptosis was assessed by TUNEL staining. Subcellular translocation of proteins was examined by confocal microscopy and signalling pathways were analysed by western blotting and overlay assay. RESULTS In PKCδ-overexpressing (PKCδ-tg) mouse islet cells and INS-1E cells FOXO1 accumulated in nuclei, surprisingly, as P-FOXO1. PKCδ-tg decelerated IGF-1-dependent stimulation of nuclear export, indicating that changes in export caused nuclear retention of P-FOXO1. Nuclear accumulation of P-FOXO1 was accompanied by increased phosphorylation of 14-3-3ζ at S58 and reduced dimerisation of 14-3-3ζ. Palmitic acid further augmented phosphorylation of 14-3-3ζ and triggered nuclear accumulation of FOXO1 in both INS-1E and human islet cells. Furthermore, the overexpression of a phosphomimicking mutant of 14-3-3ζ (S58D) enhanced nuclear FOXO1. In accordance with the nuclear accumulation of P-FOXO1, PKCδ overexpression alone did not increase apoptotic cell death. Additionally, insulin secretion and glucose homeostasis in PKCδ-overexpressing mice remained unaffected. CONCLUSIONS/INTERPRETATION These results suggest that PKCδ-mediated phosphorylation of 14-3-3ζ contributes to the nuclear retention of FOXO1, even when FOXO1 is phosphorylated as under non-stress conditions. P-FOXO1 does not induce pro-apoptotic genes, but may rather exert beneficial effects on beta cells.
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Affiliation(s)
- Felicia Gerst
- Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, Department of Internal Medicine IV, University Hospital Tübingen, D-72076, Tübingen, Germany
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Center Munich at the University of Tübingen (IDM), Partner in the German Center for Diabetes Research (DZD), Tübingen, Germany
| | - Gabriele Kaiser
- Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, Department of Internal Medicine IV, University Hospital Tübingen, D-72076, Tübingen, Germany
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Center Munich at the University of Tübingen (IDM), Partner in the German Center for Diabetes Research (DZD), Tübingen, Germany
| | - Madhura Panse
- Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, Department of Internal Medicine IV, University Hospital Tübingen, D-72076, Tübingen, Germany
| | - Tina Sartorius
- Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, Department of Internal Medicine IV, University Hospital Tübingen, D-72076, Tübingen, Germany
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Center Munich at the University of Tübingen (IDM), Partner in the German Center for Diabetes Research (DZD), Tübingen, Germany
| | - Anna Pujol
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Anita M Hennige
- Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, Department of Internal Medicine IV, University Hospital Tübingen, D-72076, Tübingen, Germany
| | - Fausto Machicao
- Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, Department of Internal Medicine IV, University Hospital Tübingen, D-72076, Tübingen, Germany
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Center Munich at the University of Tübingen (IDM), Partner in the German Center for Diabetes Research (DZD), Tübingen, Germany
| | - Reiner Lammers
- Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, Department of Internal Medicine IV, University Hospital Tübingen, D-72076, Tübingen, Germany
| | - Fatima Bosch
- Center of Animal Biotechnology and Gene Therapy, Universitat Autònoma de Barcelona, Bellaterra, Barcelona, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Spain
| | - Hans-Ulrich Häring
- Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, Department of Internal Medicine IV, University Hospital Tübingen, D-72076, Tübingen, Germany
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Center Munich at the University of Tübingen (IDM), Partner in the German Center for Diabetes Research (DZD), Tübingen, Germany
| | - Susanne Ullrich
- Division of Endocrinology, Diabetology, Angiology, Nephrology and Clinical Chemistry, Department of Internal Medicine IV, University Hospital Tübingen, D-72076, Tübingen, Germany.
- Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Center Munich at the University of Tübingen (IDM), Partner in the German Center for Diabetes Research (DZD), Tübingen, Germany.
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Bertin FR, Lemarié CA, Robins RS, Blostein MD. Growth arrest-specific 6 regulates thrombin-induced expression of vascular cell adhesion molecule-1 through forkhead box O1 in endothelial cells. J Thromb Haemost 2015; 13:2260-72. [PMID: 26414399 DOI: 10.1111/jth.13156] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 09/12/2015] [Indexed: 12/18/2022]
Abstract
BACKGROUND Growth arrest-specific 6 (Gas6)-deficient mice are protected against venous thromboembolism (VTE), suggesting a role for Gas6 in this disorder. We previously demonstrated that Gas6 induces forkhead box O1 (FoxO-1) phosphorylation through the phosphoinositide 3-kinase-Akt pathway. FoxO-1 regulates the expression of vascular cell adhesion molecule-1 (VCAM-1), a molecule that has been implicated in VTE. OBJECTIVES To assess the role of FoxO-1 in Gas6-dependent VCAM-1 expression. METHODS Thrombin was used to stimulate endothelial cells (ECs). Wild-type (WT) and Gas6(-/-) ECs were transfected with small interfering RNA targeting Axl or FoxO-1, a luciferase-coupled plasmid containing the FoxO-1 consensus sequence, and a phosphorylation-resistant FoxO-1 mutant, or treated with an Akt inhibitor. VCAM-1 mRNA expression was measured by real time-qPCR. VCAM-1 protein expression and FoxO-1 and Akt phosphorylation were assessed by western blot analysis. FoxO-1 localization was assessed by immunofluorescence. Adhesion of bone marrow mononuclear cells (BM-MCs) on ECs was assessed by fluorescence. RESULTS AND CONCLUSIONS Thrombin induces both VCAM-1 expression and FoxO-1 phosphorylation and nuclear exclusion in WT ECs only. Silencing of FoxO-1 enhances VCAM-1 expression in both WT and Gas6(-/-) ECs. Inhibition of Akt or FoxO-1 phosphorylation prevents VCAM-1 expression in WT ECs. These data show that Gas6 induces FoxO-1 phosphorylation, leading to derepression of VCAM-1 expression. BM-MC-EC adhesion is increased by thrombin in WT ECs. BM-MC-EC adhesion is further increased when FoxO-1 is silenced, but decreased when FoxO-1 phosphorylation is inhibited. These results demonstrate that the Gas6-FoxO-1 signaling axis plays an important role in VCAM-1 expression in the context of VTE by promoting BM-MC-EC adhesion.
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Affiliation(s)
- F R Bertin
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
| | - C A Lemarié
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
- Department of Medicine, Jewish General Hospital, McGill University, Montreal, Quebec, Canada
| | - R S Robins
- The Royal Victoria Hospital, McGill University Health Center, McGill University, Montreal, Quebec, Canada
| | - M D Blostein
- Lady Davis Institute for Medical Research, McGill University, Montreal, Quebec, Canada
- Department of Medicine, Jewish General Hospital, McGill University, Montreal, Quebec, Canada
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Yasuda K, Takahashi M, Mori N. Mdm20 Modulates Actin Remodeling through the mTORC2 Pathway via Its Effect on Rictor Expression. PLoS One 2015; 10:e0142943. [PMID: 26600389 PMCID: PMC4658088 DOI: 10.1371/journal.pone.0142943] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 10/28/2015] [Indexed: 12/20/2022] Open
Abstract
NatB is an N-terminal acetyltransferase consisting of a catalytic Nat5 subunit and an auxiliary Mdm20 subunit. In yeast, NatB acetylates N-terminal methionines of proteins during de novo protein synthesis and also regulates actin remodeling through N-terminal acetylation of tropomyosin (Trpm), which stabilizes the actin cytoskeleton by interacting with actin. However, in mammalian cells, the biological functions of the Mdm20 and Nat5 subunits are not well understood. In the present study, we show for the first time that Mdm20-knockdown (KD), but not Nat5-KD, in HEK293 and HeLa cells suppresses not only cell growth, but also cellular motility. Although stress fibers were formed in Mdm20-KD cells, and not in control or Nat5-KD cells, the localization of Trpm did not coincide with the formation of stress fibers in Mdm20-KD cells. Notably, knockdown of Mdm20 reduced the expression of Rictor, an mTORC2 complex component, through post-translational regulation. Additionally, PKCαS657 phosphorylation, which regulates the organization of the actin cytoskeleton, was also reduced in Mdm20-KD cells. Our data also suggest that FoxO1 phosphorylation is regulated by the Mdm20-mTORC2-Akt pathway in response to serum starvation and insulin stimulation. Taken together, the present findings suggest that Mdm20 acts as a novel regulator of Rictor, thereby controlling mTORC2 activity, and leading to the activation of PKCαS657 and FoxO1.
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Affiliation(s)
- Kunihiko Yasuda
- The Department of Anatomy and Neurobiology, Nagasaki University School of Medicine, Nagasaki, Japan
- * E-mail: (KY); (NM)
| | - Mayumi Takahashi
- The Department of Anatomy and Neurobiology, Nagasaki University School of Medicine, Nagasaki, Japan
| | - Nozomu Mori
- The Department of Anatomy and Neurobiology, Nagasaki University School of Medicine, Nagasaki, Japan
- * E-mail: (KY); (NM)
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Zhong C, Pu LY, Fang MM, Gu Z, Rao JH, Wang XH. Retinoic acid receptor α promotes autophagy to alleviate liver ischemia and reperfusion injury. World J Gastroenterol 2015; 21:12381-12391. [PMID: 26604645 PMCID: PMC4649121 DOI: 10.3748/wjg.v21.i43.12381] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 06/19/2015] [Accepted: 08/25/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To study the role of autophagy and the relationship between retinoic acid receptor α (RARα) and autophagy in liver ischemia and reperfusion (IR) injury.
METHODS: All-trans retinoic acid (ATRA) was administered to mice for two weeks before operation. Reverse transcription-polymerase chain reaction and Western blot were used to detect the expression levels of related factors. To demonstrate the role of RARα, LE540, a RARα inhibitor, was used to treat hepatocytes injured by H2O2in vitro.
RESULTS: ATRA pretreatment noticeably diminished levels of serum alanine aminotransferase and aspartate aminotransferase as well as the degree of histopathological changes. Apoptosis was also inhibited, whereas autophagy was promoted. In vitro, RARα was inhibited by LE540, which resulted in decreased autophagy and increased apoptosis. Similarly, the expression of Foxo3a and p-Akt was downregulated, but Foxo1 expression was upregulated.
CONCLUSION: This research provides evidence that ATRA can protect the liver from IR injury by promoting autophagy, which is dependent on Foxo3/p-Akt/Foxo1 signaling.
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Parvaiz F, Manzoor S, Iqbal J, Sarkar-Dutta M, Imran M, Waris G. Hepatitis C virus NS5A promotes insulin resistance through IRS-1 serine phosphorylation and increased gluconeogenesis. World J Gastroenterol 2015; 21:12361-12369. [PMID: 26604643 PMCID: PMC4649119 DOI: 10.3748/wjg.v21.i43.12361] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 02/21/2014] [Accepted: 05/14/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the mechanisms of insulin resistance in human hepatoma cells expressing hepatitis C virus (HCV) nonstructural protein 5A (NS5A).
METHODS: The human hepatoma cell lines, Huh7 and Huh7.5, were infected with HCV or transiently-transfected with a vector expressing HCV NS5A. The effect of HCV NS5A on the status of the critical players involved in insulin signaling was analyzed using real-time quantitative polymerase chain reaction and Western blot assays. Data were analyzed using Graph Pad Prism version 5.0.
RESULTS: To investigate the effect of insulin treatment on the players involved in insulin signaling pathway, we analyzed the status of insulin receptor substrate-1 (IRS-1) phosphorylation in HCV infected cells or Huh7.5 cells transfected with an HCV NS5A expression vector. Our results indicated that there was an increased phosphorylation of IRS-1 (Ser307) in HCV infected or NS5A transfected Huh7.5 cells compared to their respective controls. Furthermore, an increased phosphorylation of Akt (Ser473) was observed in HCV infected and NS5A transfected cells compared to their mock infected cells. In contrast, we observed decreased phosphorylation of Akt Thr308 phosphorylation in HCV NS5A transfected cells. These results suggest that Huh7.5 cells either infected with HCV or ectopically expressing HCV NS5A alone have the potential to induce insulin resistance by the phosphorylation of IRS-1 at serine residue (Ser307) followed by decreased phosphorylation of Akt Thr308, Fox01 Ser256 and GSK3β Ser9, the downstream players of the insulin signaling pathway. Furthermore, increased expression of PECK and glucose-6-phosphatase, the molecules involved in gluconeogenesis, in HCV NS5A transfected cells was observed.
CONCLUSION: Taken together, our results suggest the role of HCV NS5A in the induction of insulin resistance by modulating various cellular targets involved in the insulin signaling pathway.
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Renga B, Cipriani S, Carino A, Simonetti M, Zampella A, Fiorucci S. Reversal of Endothelial Dysfunction by GPBAR1 Agonism in Portal Hypertension Involves a AKT/FOXOA1 Dependent Regulation of H2S Generation and Endothelin-1. PLoS One 2015; 10:e0141082. [PMID: 26539823 PMCID: PMC4634759 DOI: 10.1371/journal.pone.0141082] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Accepted: 10/02/2015] [Indexed: 12/15/2022] Open
Abstract
Background GPBAR1 is a bile acids activated receptor expressed in entero-hepatic tissues. In the liver expression of GPBAR1 is restricted to sinusoidal and Kuppfer cells. In the systemic circulation vasodilation caused by GPBAR1 agonists is abrogated by inhibition of cystathione-γ-liase (CSE), an enzyme essential to the generation of hydrogen sulfide (H2S), a vasodilatory agent. Portal BAR501 is a semisynthetic bile acid derivative endowed with a potent and selective agonistic activity toward GPBAR1. Methods Cirrhosis was induced in mice by carbon tetrachloride (CCL4) administration for 9 weeks. Liver endothelial dysfunction was induced by feeding wild type and Gpbar1-/- mice with methionine for 4 weeks. In both models, mice were administered BAR501, 15 mg/kg/day. Results By transactivation assay we demonstrate that BAR501 is a selective GPBAR1 agonist devoid of any FXR agonistic activity. In naïve rats, BAR501 effectively reduced hepatic perfusion pressure and counteracted the vasoconstriction activity of norepinephrine. In the CCl4 model, 9 weeks treatment with BAR501 effectively protected against development of endothelial dysfunction by increasing liver CSE expression and activity and by reducing endothelin (ET)-1 gene expression. In mice feed methionine, treatment with BAR501 attenuated endothelial dysfunction and caused a GPBAR1-dependent regulation of CSE. Using human liver sinusoidal cells, we found that modulation of CSE expression/activity is mediated by both genomic (recruitment of CREB to CRE in the CSE promoter) and non-genomic effects, involving a Akt-dependent phosporylation of CSE and endothelial nitric oxide (NO) synthase (eNOS). BAR501, phosphorylates FOXO1 and inhibits ET-1 transcription in liver sinusoidal cells. Conclusions BAR501, a UDCA-like GPBAR1 agonist, rescues from endothelial dysfunction in rodent models of portal hypertension by exerting genomic and non-genomic effects on CSE, eNOS and ET-1 in liver sinusoidal cells.
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Affiliation(s)
- Barbara Renga
- Department of Surgical and Biomedical Sciences, University of Perugia, Perugia, Italy
| | | | - Adriana Carino
- Department of Surgical and Biomedical Sciences, University of Perugia, Perugia, Italy
| | - Michele Simonetti
- Department of Surgical and Biomedical Sciences, University of Perugia, Perugia, Italy
| | - Angela Zampella
- Department of Pharmacy, University of Naples 'Federico II', Naples, Italy
| | - Stefano Fiorucci
- Department of Surgical and Biomedical Sciences, University of Perugia, Perugia, Italy
- * E-mail:
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Mirdamadi Y, Thielitz A, Wiede A, Goihl A, Papakonstantinou E, Hartig R, Zouboulis CC, Reinhold D, Simeoni L, Bommhardt U, Quist S, Gollnick H. Insulin and insulin-like growth factor-1 can modulate the phosphoinositide-3-kinase/Akt/FoxO1 pathway in SZ95 sebocytes in vitro. Mol Cell Endocrinol 2015; 415:32-44. [PMID: 26257240 DOI: 10.1016/j.mce.2015.08.001] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 07/27/2015] [Accepted: 08/03/2015] [Indexed: 12/16/2022]
Abstract
A recent hypothesis suggests that a high glycaemic load diet-associated increase of insulin-like growth factor-1 (IGF-1) and insulin may promote acne by reducing nuclear localization of the forkhead box-O1 (FoxO1) transcription factor via activation of the phosphoinositide-3-kinase (PI3K)/Akt pathway. Using SZ95 sebocytes as a model, we investigated the effect of the most important insulinotropic western dietary factors, IGF-1 and insulin on acne. SZ95 sebocytes were stimulated with different concentrations of IGF-1 and insulin (0.001, 0.01, 0.1 and 1 μM) for 15 to 120 min ± PI3K inhibitor LY294002 (50 μM). Cytoplasmic and nuclear protein expression of p-Akt and p-FoxO1 as well as FoxO transcriptional activity was analysed. In addition, the proliferation and differentiation of sebocytes and their TLR2/4 expression were determined. We found that high concentrations of IGF-1 and insulin differentially stimulate the PI3K/Akt/FoxO1 pathway by an early up-regulation of cytoplasmic p-Akt and delayed up-regulation of p-FoxO1 resulting in FoxO1 shift to the cytoplasm and the reduction of FoxO transcriptional activity, physiological serum concentration had no effect. IGF-1 at concentrations of 0.1 and 1 μM significantly reduced proliferation but increased differentiation of sebocytes to a greater extent than insulin (0.1 and 1 μM), but up-regulated TLR2/4 expression to comparable extent. These data provide the first in vitro evidence that FoxO1 principally might be involved in the regulation of growth-factor-stimulatory effects on sebaceous lipogenesis and inflammation in the pathological condition of acne. However, the in vivo significance under physiological conditions remains to be elucidated.
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Affiliation(s)
- Yasaman Mirdamadi
- Department of Dermatology and Venereology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Anja Thielitz
- Department of Dermatology and Venereology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Antje Wiede
- Department of Dermatology and Venereology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Alexander Goihl
- Institute of Molecular and Clinical Immunology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Eleni Papakonstantinou
- Department of Dermatology and Venereology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Roland Hartig
- Institute of Molecular and Clinical Immunology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Christos C Zouboulis
- Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Dessau, Germany
| | - Dirk Reinhold
- Institute of Molecular and Clinical Immunology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Luca Simeoni
- Institute of Molecular and Clinical Immunology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Ursula Bommhardt
- Institute of Molecular and Clinical Immunology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Sven Quist
- Department of Dermatology and Venereology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany
| | - Harald Gollnick
- Department of Dermatology and Venereology, Otto-von-Guericke-University Magdeburg, Magdeburg, Germany.
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