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Wang Q, Zhang C, Jiang H, He W. Targeting CAMK2N1/CAMK2 inhibits invasion, migration and angiogenesis of non-small cell lung cancer by promoting autophagy and apoptosis via AKT/mTOR signaling pathway. Gene 2024; 913:148375. [PMID: 38490509 DOI: 10.1016/j.gene.2024.148375] [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: 12/11/2023] [Revised: 03/07/2024] [Accepted: 03/12/2024] [Indexed: 03/17/2024]
Abstract
Deregulation of calcium/calmodulin-dependent protein kinase II (CAMK2) inhibitor 1 (CAMK2N1) has been reported to be associated with the development of several malignancies. To date, there have been few studies on the role of CAMK2N1 in lung cancer. This study aimed to investigate the relationship between CAMK2N1 and the progression of non-small cell lung cancer (NSCLC). Methodological quality was assessed using the ARRIVE guidelines. CAMK2N1 was expressed at low levels in NSCLC tissues. Overexpression of CAMK2N1 in NSCLC cell lines resulted in changes such as proliferation inhibition, metastasis inhibition, autophagy increase, and apoptosis. Mechanistic studies revealed the regulatory role of CAMK2N1/CAMK2 in AKT/mTOR signaling. Upregulation of CAMK2N1 decreased the expression levels of phosphorylated calmodulin kinase 2 (p-CaMK2), phosphorylated Akt (p-Akt), and phosphorylated-mTOR (p-mTOR). In contrast, CAMK2 overexpression increased p-AKT and p-mTOR levels. Inhibition of autophagy or activation of AKT signaling reduced CAMK2N1-mediated tumor suppression. The tumorigenic ability of CAMK2N1 overexpressing cells significantly diminished in nude mice. In conclusion, this study demonstrated the cancer suppressive function of CAMK2N1 in NSCLC and showed that CAMK2N1/CAMK2 exerted anti-cancer effects by inhibiting the AKT/mTOR signaling pathway to promote autophagy.
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Affiliation(s)
- Qiang Wang
- Department of Urology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China; Department of Cardiothoracic Vascular Surgery, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China
| | - Chao Zhang
- Clinical Skills Center, Hubei University of Medicine, Shiyan, Hubei 442000, China
| | - Hai Jiang
- Department of Cardiothoracic Vascular Surgery, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei 442000, China
| | - Weiyang He
- Department of Urology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
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2
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Fu J, Liang P, Zheng Y, Xu C, Xiong F, Yang F. A large deletion in TSC2 causes tuberous sclerosis complex by dysregulating PI3K/AKT/mTOR signaling pathway. Gene 2024; 909:148312. [PMID: 38412945 DOI: 10.1016/j.gene.2024.148312] [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: 11/28/2023] [Revised: 01/22/2024] [Accepted: 02/21/2024] [Indexed: 02/29/2024]
Abstract
BACKGROUND/AIM Tuberous sclerosis complex (TSC) is a multi-system syndrome caused by loss-of-function mutation in TSC1 or TSC2. Most TSC patients present with cardiac rhabdomyoma or cortical tubers during fetal life, and the symptoms are not uniform as their age. The gene products of TSC1/2 are components of the TSC protein complex and are important role in the PI3K/AKT/mTOR (PAM) signaling pathway. Based on three members of a family with variable expressivity, the purpose of this study was to clarify the clinical features of TSC in different age groups and to analyze the genetic characteristics of TSC2 gene. METHODS Clinical exome sequencing and co-segregation were used to identify a three-generation family with four affected individuals. HEK-293T cell model was constructed for subsequent experiments. Quantitative RT-PCR, western blotting, and subcellular localization were used to analyze the expression effect of TSC2 mutation. CCK-8 assay, wound healing assay, and cell cycle analysis were used to analyze the function effect of TSC2 mutation. RESULT We identified a TSC family with heterozygous deletion of exon 4 in TSC2 by clinical exon sequencing. Sanger sequencing indicated that the affected individuals have 2541-bp deletion that encompassed exon 4 and adjacent introns. Deletion of exon 4 decreased the TSC2 mRNA and protein levels in HEK-293T cells, and activated the PI3K/AKT/mTOR pathway, thereby altering the cell cycle and promoting cell proliferation and migration. CONCLUSION We confirmed the pathogenicity of the large deletion in TSC2 in a three- generations family.. Deletion of exon 4 of TSC2 affected cell proliferation, migration, and cell cycle via abnormal activation of the PAM pathway. This study evaluated the pathogenic effect of deletion of exon 4 of TSC2 and investigated the underlying mechanism.
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Affiliation(s)
- Jiahui Fu
- Department of Fetal Medicine and Prenatal Diagnosis, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Peili Liang
- Outpatient & Emergency Management Office, Longgang District Maternity & Child Healthcare Hospital of Shenzhen City, Shenzhen, China
| | - Yingchun Zheng
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China
| | - Cailing Xu
- Department of Fetal Medicine and Prenatal Diagnosis, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Fu Xiong
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, China.
| | - Fang Yang
- Department of Fetal Medicine and Prenatal Diagnosis, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
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Wang Y, Gao B, Chen X, Shi X, Li S, Zhang Q, Zhang C, Piao F. Improvement of diabetes-induced spinal cord axon injury with taurine via nerve growth factor-dependent Akt/mTOR pathway. Amino Acids 2024; 56:32. [PMID: 38637413 PMCID: PMC11026277 DOI: 10.1007/s00726-024-03392-8] [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: 08/03/2023] [Accepted: 03/21/2024] [Indexed: 04/20/2024]
Abstract
Diabetic neuropathy (DN) is a common neurological complication caused by diabetes mellitus (DM). Axonal degeneration is generally accepted to be the major pathological change in peripheral DN. Taurine has been evidenced to be neuroprotective in various aspects, but its effect on spinal cord axon injury (SCAI) in DN remains barely reported. This study showed that taurine significantly ameliorated axonal damage of spinal cord (SC), based on morphological and functional analyses, in a rat model of DN induced by streptozotocin (STZ). Taurine was also found to induce neurite outgrowth in cultured cerebral cortex neurons with high glucose exposure. Moreover, taurine up-regulated the expression of nerve growth factor (NGF) and neurite outgrowth relative protein GAP-43 in rat DN model and cultured cortical neurons/VSC4.1 cells. Besides, taurine increased the activating phosphorylation signals of TrkA, Akt, and mTOR. Mechanistically, the neuroprotection by taurine was related to the NGF-pAKT-mTOR axis, because either NGF-neutralizing antibody or Akt or mTOR inhibitors was found to attenuate its beneficial effects. Together, our results demonstrated that taurine promotes spinal cord axon repair in a model of SCAI in STZ-induced diabetic rats, mechanistically associating with the NGF-dependent activation of Akt/mTOR pathway.
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Affiliation(s)
- Yachen Wang
- Stem Cell Clinical Research Center, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Bihu Gao
- Department of Nephrology, Affiliated Zhongshan Hospital of Dalian University, Dalian, 116001, China
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Xiaochi Chen
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian, 116011, China
| | - Xiaoxia Shi
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, 116044, Liaoning, China
| | - Shuangyue Li
- Department of Occupational and Environmental Health, Dalian Medical University, Dalian, 116044, Liaoning, China
| | - Qing Zhang
- Department of Integrative Laboratory, Affiliated Zhongshan Hospital of Dalian University, Dalian, 116001, China.
| | - Cong Zhang
- Department of Nutrition and Food Safety, Dalian Medical University, Dalian, 116044, Liaoning, China.
| | - Fengyuan Piao
- Department of Scientific Research Project, Affiliated Zhongshan Hospital of Dalian University, Dalian, 116001, China.
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Reda GK, Ndunguru SF, Csernus B, Gulyás G, Knop R, Szabó C, Czeglédi L, Lendvai ÁZ. Dietary restriction and life-history trade-offs: insights into mTOR pathway regulation and reproductive investment in Japanese quail. J Exp Biol 2024; 227:jeb247064. [PMID: 38563310 DOI: 10.1242/jeb.247064] [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: 11/26/2023] [Accepted: 03/18/2024] [Indexed: 04/04/2024]
Abstract
Resources are needed for growth, reproduction and survival, and organisms must trade off limited resources among competing processes. Nutritional availability in organisms is sensed and monitored by nutrient-sensing pathways that can trigger physiological changes or alter gene expression. Previous studies have proposed that one such signalling pathway, the mechanistic target of rapamycin (mTOR), underpins a form of adaptive plasticity when individuals encounter constraints in their energy budget. Despite the fundamental importance of this process in evolutionary biology, how nutritional limitation is regulated through the expression of genes governing this pathway and its consequential effects on fitness remain understudied, particularly in birds. We used dietary restriction to simulate resource depletion and examined its effects on body mass, reproduction and gene expression in Japanese quails (Coturnix japonica). Quails were subjected to feeding at 20%, 30% and 40% restriction levels or ad libitum for 2 weeks. All restricted groups exhibited reduced body mass, whereas reductions in the number and mass of eggs were observed only under more severe restrictions. Additionally, dietary restriction led to decreased expression of mTOR and insulin-like growth factor 1 (IGF1), whereas the ribosomal protein S6 kinase 1 (RPS6K1) and autophagy-related genes (ATG9A and ATG5) were upregulated. The pattern in which mTOR responded to restriction was similar to that for body mass. Regardless of the treatment, proportionally higher reproductive investment was associated with individual variation in mTOR expression. These findings reveal the connection between dietary intake and the expression of mTOR and related genes in this pathway.
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Affiliation(s)
- Gebrehaweria K Reda
- Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
- Doctoral School of Animal Science, University of Debrecen, 4032 Debrecen, Hungary
- Department of Evolutionary Zoology and Human Biology, Faculty of Life Science, University of Debrecen, 4032 Debrecen, Hungary
| | - Sawadi F Ndunguru
- Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
- Doctoral School of Animal Science, University of Debrecen, 4032 Debrecen, Hungary
- Department of Evolutionary Zoology and Human Biology, Faculty of Life Science, University of Debrecen, 4032 Debrecen, Hungary
| | - Brigitta Csernus
- Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
- Department of Evolutionary Zoology and Human Biology, Faculty of Life Science, University of Debrecen, 4032 Debrecen, Hungary
| | - Gabriella Gulyás
- Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
| | - Renáta Knop
- Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
| | - Csaba Szabó
- Department of Animal Nutrition and Physiology, Faculty of Agriculture and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
| | - Levente Czeglédi
- Department of Animal Science, Institute of Animal Science, Biotechnology and Nature Conservation, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary
| | - Ádám Z Lendvai
- Department of Evolutionary Zoology and Human Biology, Faculty of Life Science, University of Debrecen, 4032 Debrecen, Hungary
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Xu Q, Liu L, Zhang R, Yu Z, Hao F, Zhang J. Effects of moxibustion with wheat-grain size cone at "Zusanli" (ST 36) on vascular injury and oxidative stress in high-fat diet rats through mTOR/HIF-1α/VEGF signaling pathway. Zhongguo Zhen Jiu 2024; 44:433-440. [PMID: 38621731 DOI: 10.13703/j.0255-2930.20230510-k0003] [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] [Indexed: 04/17/2024]
Abstract
OBJECTIVES To explore the effect mechanism of moxibustion with wheat-grain size cone at "Zusanli" (ST 36) on vascular injury and oxidative stress in hyperlipidemia through mammalian target of rapamycin (mTOR)/hypoxia inducible factor-1α (HIF-1α)/vascular endothelial growth factor (VEGF) signaling pathway. METHODS Forty healthy male SD rats with SPF grade were randomly divided into a normal group, a model group, a moxibustion group, and an inhibitor group, with 10 rats in each one. The hyperlipidemia model was established by feeding a high-fat diet for 8 weeks in rats of the model group, the moxibustion group and the inhibitor group. The moxibustion with wheat-grain size cone was delivered at bilateral "Zusanli" (ST 36) of each rat in the moxibustion group and the inhibitor group, with 3 cones on each acupoint in each intervention, once daily for 4 weeks. In the inhibitor group, before each intervention with moxibustion, rapamycin solution was injected intraperitoneally, 2.0 mg/kg. After modeling and intervention, using ELISA, the levels of total cholesterol (TC), triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C) in the serum of rats were determined. After intervention, with HE staining and oil red O staining adopted, the abdominal aortic morphology and peripheral lipid deposition were observed. Separately, using WST-1, TBA and micro-plate method, the superoxide dismutase (SOD) activity and the levels of malondialdehyde (MDA) and nitric oxide (NO) in the serum were detected. The protein expression of mTOR, HIF-1α and VEGF in abdominal aorta were measured by Western blot method. RESULTS Compared with those in the normal group, the levels of TC, TG and LDL-C increased (P<0.01) and HDL-C decreased (P<0.01) in the serum of the rats in the model group, the moxibustion group and the inhibitor group after model establishment. When compared with the normal group after intervention, in the model group, the serum levels of TC, TG, LDL-C and MDA increased (P<0.01), HDL-C level, SOD activity and NO level were reduced (P<0.01); the cell structure of the abdominal arota was abnormal, the peripheral lipids deposited seriously; and the protein expression of mTOR, HIF-1α and VEGF of abdominal aorta was elevated (P<0.01, P<0.05). In comparison with the model group, the levels of TC, TG, LDL-C and MDA were reduced (P<0.01), HDL-C levels, SOD activities and NO levels elevated (P<0.01, P<0.05), as well as the protein expression of mTOR, HIF-1α and VEGF of abdominal aorta (P<0.01, P<0.05) in the moxibustion group and the inhibitor group; besides, the vascular structure was ameliorated and the lipid deposition reduced in the moxibustion group, while, the vascular structure was still abnormal and the lipid deposition declined in the inhibitor group. When compared with the inhibitor group, the serum SOD activity and NO level increased (P<0.05) and MDA decreased (P<0.05); and the protein expression of mTOR, HIF-1α and VEGF of abdominal aorta was elevated (P<0.01, P<0.05) in the moxibustion group. CONCLUSIONS The vascular injury due to hyperlipidemia is repaired by moxibustion with wheat-grain size cone at "Zusanli" (ST 36) through ameliorating oxidative stress, which is associated potentially with the modulation of mTOR/HIF-1α/VEGF signaling pathway.
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Affiliation(s)
- Qian Xu
- Department of Acupuncture and Moxibustion, Second Affiliated Hospital of Nanjing University of Chinese Medicine/Second TCM Hospital of Jiangsu Province, Nanjing 210017, China.
| | - Liyuan Liu
- Department of Acupuncture and Moxibustion, Second Affiliated Hospital of Nanjing University of Chinese Medicine/Second TCM Hospital of Jiangsu Province, Nanjing 210017, China
| | - Rongxian Zhang
- Department of Acupuncture and Moxibustion, Second Affiliated Hospital of Nanjing University of Chinese Medicine/Second TCM Hospital of Jiangsu Province, Nanjing 210017, China
| | - Zhi Yu
- Key Laboratory of Acupuncture and Medicine Research of the Ministry of Education, Nanjing University of Chinese Medicine
| | - Feng Hao
- School of Acupuncture-Moxibustion and Tuina, Nanjing University of Chinese Medicine
| | - Jianbin Zhang
- Department of Acupuncture and Moxibustion, Second Affiliated Hospital of Nanjing University of Chinese Medicine/Second TCM Hospital of Jiangsu Province, Nanjing 210017, China.
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Reda GK, Ndunguru SF, Csernus B, Knop R, Lugata JK, Szabó C, Czeglédi L, Lendvai ÁZ. Dietary restriction reveals sex-specific expression of the mTOR pathway genes in Japanese quails. Sci Rep 2024; 14:8314. [PMID: 38594358 PMCID: PMC11004124 DOI: 10.1038/s41598-024-58487-9] [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: 09/20/2023] [Accepted: 03/29/2024] [Indexed: 04/11/2024] Open
Abstract
Limited resources affect an organism's physiology through the conserved metabolic pathway, the mechanistic target of rapamycin (mTOR). Males and females often react differently to nutritional limitation, but whether it leads to differential mTOR pathway expression remains unknown. Recently, we found that dietary restriction (DR) induced significant changes in the expression of mTOR pathway genes in female Japanese quails (Coturnix japonica). We simultaneously exposed 32 male and female Japanese quails to either 20%, 30%, 40% restriction or ad libitum feeding for 14 days and determined the expression of six key genes of the mTOR pathway in the liver to investigate sex differences in the expression patterns. We found that DR significantly reduced body mass, albeit the effect was milder in males compared to females. We observed sex-specific liver gene expression. DR downregulated mTOR expression more in females than in males. Under moderate DR, ATG9A and RPS6K1 expressions were increased more in males than in females. Like females, body mass in males was correlated positively with mTOR and IGF1, but negatively with ATG9A and RS6K1 expressions. Our findings highlight that sexes may cope with nutritional deficits differently and emphasise the importance of considering sexual differences in studies of dietary restriction.
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Affiliation(s)
- Gebrehaweria K Reda
- Department of Animal Science, Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Animal Science, Biotechnology and Nature Conservation, University of Debrecen, 4032, Debrecen, Hungary.
- Doctoral School of Animal Science, University of Debrecen, 4032, Debrecen, Hungary.
- Department of Evolutionary Zoology and Human Biology, University of Debrecen, 4032, Debrecen, Hungary.
| | - Sawadi F Ndunguru
- Department of Animal Science, Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Animal Science, Biotechnology and Nature Conservation, University of Debrecen, 4032, Debrecen, Hungary
- Doctoral School of Animal Science, University of Debrecen, 4032, Debrecen, Hungary
- Department of Evolutionary Zoology and Human Biology, University of Debrecen, 4032, Debrecen, Hungary
| | - Brigitta Csernus
- Department of Evolutionary Zoology and Human Biology, University of Debrecen, 4032, Debrecen, Hungary
| | - Renáta Knop
- Department of Animal Science, Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Animal Science, Biotechnology and Nature Conservation, University of Debrecen, 4032, Debrecen, Hungary
| | - James K Lugata
- Doctoral School of Animal Science, University of Debrecen, 4032, Debrecen, Hungary
- Department of Animal Nutrition and Physiology, Faculty of Agriculture and Food Sciences and Environmental Management, University of Debrecen, 4032, Debrecen, Hungary
| | - Csaba Szabó
- Department of Animal Nutrition and Physiology, Faculty of Agriculture and Food Sciences and Environmental Management, University of Debrecen, 4032, Debrecen, Hungary
| | - Levente Czeglédi
- Department of Animal Science, Faculty of Agricultural and Food Sciences and Environmental Management, Institute of Animal Science, Biotechnology and Nature Conservation, University of Debrecen, 4032, Debrecen, Hungary
| | - Ádám Z Lendvai
- Department of Evolutionary Zoology and Human Biology, University of Debrecen, 4032, Debrecen, Hungary
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Li C, Lin X, Su J. HSP90B1 regulates autophagy via PI3K/AKT/mTOR signaling, mediating HNSC biological behaviors. PeerJ 2024; 12:e17028. [PMID: 38590708 PMCID: PMC11000640 DOI: 10.7717/peerj.17028] [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] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 02/07/2024] [Indexed: 04/10/2024] Open
Abstract
Background Autophagy, a crucial cellular mechanism, facilitates the degradation and removal of misfolded proteins and impaired organelles. Recent research has increasingly highlighted the intimate connection between autophagy and heat shock proteins (HSPs) in the context of tumor development. However, the specific role and underlying mechanisms of heat shock protein 90 beta family member 1 (HSP90B1) in modulating autophagy within head and neck squamous cell carcinoma (HNSCC) remain elusive. Methods Quantitative real-time PCR (qRT-PCR), Western blot (WB), immunohistochemistry (IHC) were used to detect the expression in HNSC cell lines and tissues. The relationship between HSP90B1 and clinicopathologic features was explored based on TCGA (The Cancer Genome Atlas) data and IHC results. The biological functions of HSP90B1 were analyzed through in vitro and in vivo models to evaluate proliferation, migration, invasion, and autophagy. The mechanisms of HSP90B1 were studied using bioinformatics and WB. Results HSP90B1 was upregulated in HNSC cells and tissues. High HSP90B1 levels were associated with T-stage, M-stage, clinical stage, and poor prognosis in HNSC patients. Functionally, HSP90B1 promotes HNSC cell proliferation, migration, invasion and inhibits apoptosis. We discovered that HSP90B1 obstructs autophagy and advances HNSC progression through the PI3K/Akt/mTOR pathway. Conclusion Our study demonstrates that HSP90B1 is highly expressed in HNSC. Furthermore, HSP90B1 may regulate autophagy through the PI3K/Akt/mTOR pathway, mediating HNSC cell biological behaviors. These provide new insights into potential biomarkers and targets for HNSC therapy.
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Affiliation(s)
- Chao Li
- Department of Otolaryngology-Head and Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Xiaoyu Lin
- Department of Otolaryngology-Head and Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Jiping Su
- Department of Otolaryngology-Head and Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China
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Liu Y, Xia P, Zong S, Zheng N, Cui X, Wang C, Wang M, Wang X, Yu S, Zhao H, Lu Z. Inhibition of Alzheimer's disease by 4-octyl itaconate revealed by RNA-seq transcriptome analysis. Eur J Pharmacol 2024; 968:176432. [PMID: 38369275 DOI: 10.1016/j.ejphar.2024.176432] [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: 09/01/2023] [Revised: 02/15/2024] [Accepted: 02/15/2024] [Indexed: 02/20/2024]
Abstract
AIMS This study aimed to examine the therapeutic effects and response mechanisms of 4-OI in Alzheimer's disease (AD). METHODS In this study, network pharmacology was employed to analyze potential targets for AD drug therapy. Immunofluorescence and quantitative reverse transcription polymerase chain reaction (qRT-PCR) techniques were utilized to detect inflammatory phenotypes in a 4-OI-resistant mouse microglia cell line (BV2). We conducted four classical behavioral experiments, namely the open field test, new object recognition test, Y maze test, and Morris water maze, to assess the emotional state and cognitive level of APPswe/PS1dE9 (referred to as APP/PS1) mice after 4-OI treatment. Hematoxylin and eosin (HE) staining, along with immunofluorescence staining, were performed to detect amyloid (Aβ) deposition in mouse brain tissue. To explore the potential molecular mechanisms regulating the effects of 4-OI treatment, we performed RNA-SEQ and transcription factor prediction analyses. Additionally, mouse BV2 cells underwent Western blotting analysis to elucidate potential molecular mechanisms underlying the observed effects. RESULTS We discovered that 4-OI exerts an inhibitory effect on neuroinflammation by promoting autophagy. This effect is attributed to the activation of the AMPK/mTOR/ULK1 pathway, achieved through enhanced phosphorylation of AMPK and ULK1, coupled with a reduction in mTOR phosphorylation. Furthermore, 4-OI significantly enhances neuronal recovery in the hippocampus and diminishes Aβ plaque deposition in APP/PS1 mice, improved anxiety in mice, and ultimately led to improved cognitive function. CONCLUSIONS Overall, the results of this study demonstrated that 4-OI improved cognitive deficits in AD mice, confirming the therapeutic effect of 4-OI on AD.
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Affiliation(s)
- Yingchao Liu
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Pengcheng Xia
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Shuai Zong
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Ni Zheng
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xiaolin Cui
- School of Medicine, Shandong University, Jinan, Shandong, China
| | - Cuicui Wang
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Miaomiao Wang
- Department of Clinical Laboratory Medicine, Jining No. 1 People's Hospital, Jining, 272029, Shandong, China
| | - Xueying Wang
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Shuyi Yu
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Hao Zhao
- Department of Otolaryngology, Head and Neck Surgery, People's Hospital, Peking University, Beijing, China
| | - Zhiming Lu
- Department of Clinical Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
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Browne IM, André F, Chandarlapaty S, Carey LA, Turner NC. Optimal targeting of PI3K-AKT and mTOR in advanced oestrogen receptor-positive breast cancer. Lancet Oncol 2024; 25:e139-e151. [PMID: 38547898 DOI: 10.1016/s1470-2045(23)00676-9] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 12/18/2023] [Accepted: 12/20/2023] [Indexed: 04/02/2024]
Abstract
The growing availability of targeted therapies for patients with advanced oestrogen receptor-positive breast cancer has improved survival, but there remains much to learn about the optimal management of these patients. The PI3K-AKT and mTOR pathways are among the most commonly activated pathways in breast cancer, whose crucial role in the pathogenesis of this tumour type has spurred major efforts to target this pathway at specific kinase hubs. Approvals for oestrogen receptor-positive advanced breast cancer include the PI3K inhibitor alpelisib for PIK3CA-mutated tumours, the AKT inhibitor capivasertib for tumours with alterations in PIK3CA, AKT1, or PTEN, and the mTOR inhibitor everolimus, which is used irrespective of mutation status. The availability of different inhibitors leaves physicians with a potentially challenging decision over which of these therapies should be used for individual patients and when. In this Review, we present a comprehensive summary of our current understanding of the pathways and the three inhibitors and discuss strategies for the optimal sequencing of therapies in the clinic, particularly after progression on a CDK4/6 inhibitor.
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Affiliation(s)
- Iseult M Browne
- Breast Cancer Now Research Centre, Institute of Cancer Research, London, UK; Ralph Lauren Centre for Breast Cancer Research and Breast Unit, The Royal Marsden Hospital NHS Foundation Trust, London, UK
| | - Fabrice André
- Department of Medical Oncology, INSERM U981, Institut Gustave Roussy, Université Paris Saclay, Villejuif, France
| | | | - Lisa A Carey
- University of North Carolina Lineberger Comprehensive Cancer Center, Chapel Hill, NC, USA
| | - Nicholas C Turner
- Breast Cancer Now Research Centre, Institute of Cancer Research, London, UK; Ralph Lauren Centre for Breast Cancer Research and Breast Unit, The Royal Marsden Hospital NHS Foundation Trust, London, UK.
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10
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Wang F, Xu WQ, Zhang WQ, Xu RC, Sun JL, Zhang GC, Liu ZY, Qi ZR, Dong L, Weng SQ, Shen XZ, Liu TT, Fang Y, Zhu JM. Transferrin receptor 1 promotes hepatocellular carcinoma progression and metastasis by activating the mTOR signaling pathway. Hepatol Int 2024; 18:636-650. [PMID: 37982952 DOI: 10.1007/s12072-023-10607-9] [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: 07/13/2023] [Accepted: 10/09/2023] [Indexed: 11/21/2023]
Abstract
BACKGROUND Aberrant iron metabolism is commonly observed in multiple tumor types, including hepatocellular carcinoma (HCC). However, as the key regulator of iron metabolism involved in iron absorption, the role of transferrin receptor (TFRC) in HCC remains elusive. METHODS The mRNA and protein expression of TFRC were evaluated in paired HCC and adjacent non-tumor specimens. The correlation between TFRC level and clinicopathological features or prognostic significance was also analyzed. The role of TFRC on biological functions was finally studied in vitro and in vivo. RESULTS The TFRC level was remarkably upregulated in HCC tissues compared to paired peritumor tissues. Overexpressed TFRC positively correlated with serum alpha-fetoprotein, carcinoembryonic antigen, and poor tumor differentiation. Multivariate analysis demonstrated that upregulated TFRC was an independent predictive marker for poorer overall survival and disease-free survival in HCC patients. Loss of TFRC markedly impaired cell proliferation and migration in vitro and notably suppressed HCC growth and metastasis in vivo, while overexpression of TFRC performed an opposite effect. Mechanistically, the mTOR signaling pathway was downregulated with TFRC knockdown, and the mTOR agonist MHY1485 completely reversed the biological inhibition in HCC cells caused by TFRC knockdown. Furthermore, exogenous ferric citrate (FAC) or iron chelator reversed the changed biological functions and signaling pathway expression of HCC cells caused by TFRC knockdown or overexpression, respectively. CONCLUSIONS Our study indicates that TFRC exerts an oncogenic role in HCC and may become a promising therapeutic target to restrain HCC progression.
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Affiliation(s)
- Fu Wang
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China
| | - Wei-Qi Xu
- Department of Hepatic Surgery, Shanghai Cancer Center, Fudan University, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wan-Qin Zhang
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China
| | - Ru-Chen Xu
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China
| | - Jia-Lei Sun
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China
| | - Guang-Cong Zhang
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China
| | - Zhi-Yong Liu
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China
| | - Zhuo-Ran Qi
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China
| | - Ling Dong
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China
| | - Shu-Qiang Weng
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China
| | - Xi-Zhong Shen
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China
- Key Laboratory of Medical Molecular Virology, Shanghai Medical College of Fudan University, 138 Yixueyuan Rd., Shanghai, 200032, China
| | - Tao-Tao Liu
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China
| | - Ying Fang
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China.
| | - Ji-Min Zhu
- Department of Gastroenterology and Hepatology and Shanghai Institute of Liver Diseases, Zhongshan Hospital, Fudan University, 180 Fenglin Rd., Shanghai, 200032, China.
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11
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Liu X, Mei W, Zhang P, Zeng C. PIK3CA mutation as an acquired resistance driver to EGFR-TKIs in non-small cell lung cancer: Clinical challenges and opportunities. Pharmacol Res 2024; 202:107123. [PMID: 38432445 DOI: 10.1016/j.phrs.2024.107123] [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: 01/10/2024] [Revised: 02/20/2024] [Accepted: 02/27/2024] [Indexed: 03/05/2024]
Abstract
Epithelial growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) have significantly enhanced the treatment outcomes in non-small cell lung cancer (NSCLC) patients harboring EGFR mutations. However, the occurrence of acquired resistance to EGFR-TKIs is an unavoidable outcome observed in these patients. Disruption of the PI3K/AKT/mTOR signaling pathway can contribute to the emergence of resistance to EGFR TKIs in lung cancer. The emergence of PIK3CA mutations following treatment with EGFR-TKIs can lead to resistance against EGFR-TKIs. This review provides an overview of the current perspectives regarding the involvement of PI3K/AKT/mTOR signaling in the development of lung cancer. Furthermore, we outline the state-of-the-art therapeutic strategies targeting the PI3K/AKT/mTOR signaling pathway in lung cancer. We highlight the role of PIK3CA mutation as an acquired resistance mechanism against EGFR-TKIs in EGFR-mutant NSCLC. Crucially, we explore therapeutic strategies targeting PIK3CA-mediated resistance to EGFR TKIs in lung cancer, aiming to optimize the effectiveness of treatment.
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Affiliation(s)
- Xiaohong Liu
- Department of Medical Oncology, Shenzhen Longhua District Central Hospital, Shenzhen 518110, China
| | - Wuxuan Mei
- Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Pengfei Zhang
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Shenzhen 518110, China
| | - Changchun Zeng
- Department of Medical Laboratory, Shenzhen Longhua District Central Hospital, Shenzhen 518110, China.
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12
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Han A, Liu T, Du P, Wang M, Liu J, Chen L. The FOXO1/G6PC axis promotes gastric cancer progression and mediates 5-fluorouracil resistance by targeting the PI3K/AKT/mTOR signaling pathway. Mol Carcinog 2024; 63:688-700. [PMID: 38224261 DOI: 10.1002/mc.23681] [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: 11/08/2023] [Revised: 12/20/2023] [Accepted: 12/31/2023] [Indexed: 01/16/2024]
Abstract
Gastric cancer (GC) is a prevalent malignancy of the digestive system. Distant metastasis and chemotherapy resistance are the crucial obstacles to prognosis in GC. Recent research has discovered that the glucose-6-phosphatase catalytic subunit (G6PC) plays an important role in tumor malignant development. However, little evidence has highlighted its role in GC. Herein, through a comprehensive analysis including profiling of tissue samples and functional validation in vivo and in vitro, we identify G6PC as a crucial factor in GC tumorigenesis. Importantly, we found that the FOXO1/G6PC axis could accelerate GC cell proliferation, metastasis, and 5-Fluorouracil (5-FU) resistance by targeting the PI3K/AKT/mTOR signaling pathway, implicating that as a prospective therapeutic approach in GC.
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Affiliation(s)
- Anna Han
- Key Laboratory Pathobiology (Yanbian University), State Ethnic Affairs Commission, Yanji, China
| | - Taorui Liu
- Key Laboratory Pathobiology (Yanbian University), State Ethnic Affairs Commission, Yanji, China
- Center for Joint Surgery, Southwest Hospital, Army Medical University, Chongqing, China
| | - Pan Du
- Key Laboratory Pathobiology (Yanbian University), State Ethnic Affairs Commission, Yanji, China
| | - Mengying Wang
- Key Laboratory Pathobiology (Yanbian University), State Ethnic Affairs Commission, Yanji, China
| | - Jiajing Liu
- Key Laboratory Pathobiology (Yanbian University), State Ethnic Affairs Commission, Yanji, China
| | - Liyan Chen
- Key Laboratory Pathobiology (Yanbian University), State Ethnic Affairs Commission, Yanji, China
- Cancer Research Center, Yanbian University Medical College, Yanji, China
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13
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Li H, Ji S, Yuan X, Li Y, Kaneko G, Sun J, Ji H. Eicosapentaenoic acid (EPA) improves grass carp (Ctenopharyngodon idellus) muscle development and nutritive value by activating the mTOR signaling pathway. Fish Physiol Biochem 2024; 50:687-703. [PMID: 38285408 DOI: 10.1007/s10695-024-01299-5] [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: 10/04/2023] [Accepted: 01/10/2024] [Indexed: 01/30/2024]
Abstract
Skeletal muscle is the mainly edible part of fish. Eicosapentaenoic acid (EPA) is a crucial nutrient for fish. This study investigated the effect of EPA on the muscle development of grass carp along with the potential molecular mechanisms in vivo and in vitro. Muscle cells treated with 50 μM EPA in vitro showed the elevated proliferation, and the expression of mammalian target of rapamycin (mTOR) signaling pathway-related genes was upregulated (P < 0.05). In vivo experiments, 270 grass carp (27.92 g) were fed with one of the three experimental diets for 56 days: control diet (CN), 0.3% EPA-supplement diet (EPA), and the diet supplemented with 0.3% EPA and 30 mg/kg rapamycin (EPA + Rap). Fish weight gain rate (WGR) was improved in EPA group (P < 0.05). There was no difference in the viscerosomatic index (VSI) and body height (BH) among all groups (P > 0.05), whereas the carcass ratio (CR) and body length in the EPA group were obviously higher than those of other groups (P < 0.05), indicating that the increase of WGR was due to muscle growth. In addition, both muscle fiber density and muscle crude protein also increased in EPA group (P < 0.05). The principal component analysis showed that total weight of muscle amino acid in EPA group ranked first. Dietary EPA also increased protein levels of the total mTOR, S6k1, Myhc, Myog, and Myod in muscle (P < 0.05). In conclusion, EPA promoted the muscle development and nutritive value via activating the mTOR signaling pathway.
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Affiliation(s)
- Handong Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang, 712100, Shanxi, China
| | - Shanghong Ji
- College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang, 712100, Shanxi, China
| | - Xiangtong Yuan
- College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang, 712100, Shanxi, China
| | - Yunhe Li
- College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang, 712100, Shanxi, China
| | - Gen Kaneko
- College of Natural and Applied Science, University of Houston-Victoria, Victoria, Texas, USA
| | - Jian Sun
- College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang, 712100, Shanxi, China
| | - Hong Ji
- College of Animal Science and Technology, Northwest A&F University, Yangling, Xianyang, 712100, Shanxi, China.
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14
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Zhao Y, Jiang J, Zhou P, Deng K, Liu Z, Yang M, Yang X, Li J, Li R, Xia J. H3K18 lactylation-mediated VCAM1 expression promotes gastric cancer progression and metastasis via AKT-mTOR-CXCL1 axis. Biochem Pharmacol 2024; 222:116120. [PMID: 38461905 DOI: 10.1016/j.bcp.2024.116120] [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: 11/01/2023] [Revised: 02/26/2024] [Accepted: 03/07/2024] [Indexed: 03/12/2024]
Abstract
The role of the Immunoglobulin Superfamily (IgSF) as adhesion molecules in orchestrating inflammation is pivotal, yet its specific involvement in gastric cancer (GC) remains unknown. We analyzed IgSF components and discerned conspicuously elevated VCAM1 expression in GC, correlating with a poor prognosis. Remarkably, VCAM1 enhances GC cell proliferation and migration by activating AKT-mTOR signaling. Moreover, lactate in the tumor microenvironment (TME) promotes dynamic lactylation of H3K18 (H3K18la), leading to transcriptional activation of VCAM1 in GC cells. Furthermore, VCAM1 actively mediates intercellular communication in the TME. AKT-mTOR-mediated CXCL1 expression is increased by VCAM1, facilitating the recruitment of human GC-derived mesenchymal stem cells (hGC-MSCs), thereby fostering immunesuppression and accelerating cancer progression. In summary, H3K18 lactylation upregulated VCAM1 transcription, which activated AKT-mTOR signaling, and promoted tumor cell proliferation, EMT Transition and tumor metastasis. VCAM1 upregulated CXCL1 expression by AKT-mTOR pathway, so as to facilitate hGC-MSCs and M2 macrophage recruitment and infiltration. These findings provide novel therapeutic targets for GC.
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Affiliation(s)
- Yupeng Zhao
- Department of General Surgery, The affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Wuxi, China; Department of General Surgery, Jiangnan University Medical Center, Wuxi, China
| | - Jiang Jiang
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Peng Zhou
- Department of General Surgery, The affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Wuxi, China; Department of General Surgery, Jiangnan University Medical Center, Wuxi, China
| | - Kaiyuan Deng
- Department of General Surgery, The affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Wuxi, China; Department of General Surgery, Jiangnan University Medical Center, Wuxi, China
| | - Ziyuan Liu
- Department of General Surgery, The affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Wuxi, China
| | - Mengqi Yang
- Department of General Surgery, The affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Wuxi, China
| | - Xiao Yang
- Department of General Surgery, Jiangnan University Medical Center, Wuxi, China
| | - Jianfang Li
- Department of Surgery, Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Ranran Li
- Department of Critical Care Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Jiazeng Xia
- Department of General Surgery, The affiliated Wuxi No. 2 People's Hospital of Nanjing Medical University, Wuxi, China; Department of General Surgery, Jiangnan University Medical Center, Wuxi, China; Wuxi Clinical College, Nantong University, Wuxi, China.
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15
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Yan X, Huang S, Li H, Feng Z, Kong J, Liu J. The causal effect of mTORC1-dependent circulating protein levels on nonalcoholic fatty liver disease: A Mendelian randomization study. Dig Liver Dis 2024; 56:559-564. [PMID: 37778897 DOI: 10.1016/j.dld.2023.09.017] [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: 04/07/2023] [Revised: 08/24/2023] [Accepted: 09/19/2023] [Indexed: 10/03/2023]
Abstract
BACKGROUND The mechanistic target of rapamycin (mTOR) signal pathway plays a crucial role in the development of nonalcoholic fatty liver disease (NAFLD). However, the causal effect of mTOR downstream proteins on NAFLD remains unknown. AIMS We conducted a two-sample Mendelian randomization (MR) study to investigate whether the mTOR-dependent circulating proteins, including Eukaryotic Initiation Factor 4E Binding Proteins (eIF4EBPs), Ribosomal Protein S6K kinase 1 (RP-S6K), Eukaryotic Initiation Factor 4E (eIF4E), Eukaryotic Initiation Factor 4A (eIF4A) and Eukaryotic Initiation Factor 4 G (eIF4G), have causal effects on the risk of NAFLD. METHODS The causal estimate was evaluated with the inverse-variance weighted (IVW) method in discovery stage and validation stage. The single-nucleotide polymorphisms (SNPs) were selected to genetically predict exposures from Genome-Wide Association Studies (GWAS). Exposures with statistically significant effects in the discovery dataset would be further validated in the validation dataset. RESULTS MR study revealed that eIF4E had a causal effect on NAFLD in both discovery stage (OR = 1.339, P = 0.037) and validation stage (OR = 1.0007, P = 0.022). Sensitivity analyses confirmed robustness of the results. CONCLUSION The genetically predicted higher level of mTOR-dependent eIF4E in plasma might have a causal effect on the occurrence of NAFLD.
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Affiliation(s)
- Xiangyu Yan
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, China
| | - Songhan Huang
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, China
| | - Hongxin Li
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, China
| | - Zichen Feng
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, China
| | - Junjie Kong
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, China; Department of hepatobiliary surgery, Shandong Provincial Hospital affiliated to Shandong first medical university, Jinan, Shandong 250021, China
| | - Jun Liu
- Department of Hepatobiliary Surgery, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, China; Department of hepatobiliary surgery, Shandong Provincial Hospital affiliated to Shandong first medical university, Jinan, Shandong 250021, China.
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16
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Qiao QF, Wang LQ, Yu DE, Li N, Xu QJ, Zhou YJ. Effect of beta-cypermethrin on the reproductive capacity of female mice in advanced age. Environ Toxicol Pharmacol 2024; 107:104410. [PMID: 38423490 DOI: 10.1016/j.etap.2024.104410] [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: 01/30/2023] [Revised: 02/07/2024] [Accepted: 02/26/2024] [Indexed: 03/02/2024]
Abstract
The aim of the present study was to investigate whether exposure to pesticides beta-cypermethrin (β-CYP) harms the reproductive capacity of advanced-age female mice. The results evidenced that peri-implantation β-CYP exposure significantly reduced the number of fetuses per advanced-age female in the first litter, and the number and weight of implantation sites. The levels of decidualization markers were significantly reduced in β-CYP-administered advanced-age mice. Lower expression of Pcna, Cdk6, Foxo1, Ki67, and p62 protein and mRNA was found in the decidua of β-CYP-treated advanced-age mice. The levels of Bax, cleaved caspase-3, Lc3a/b, Atg, mTOR, and p-mTOR protein, and the ratio of p-mTOR/mTOR protein expression were clearly downregulated by peri-implantation β-CYP exposure. These results indicated that peri-implantation β-CYP exposure may elevate the decline in reproductive capacity of early pregnant mice in advanced age.
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Affiliation(s)
- Qian-Feng Qiao
- International School of Public Health and One Health, Hainan Medical University, Hainan Province 571199, People's Republic of China
| | - Li-Qing Wang
- Maternal, Child and Adolescent Health, International School of Public Health and One Health, Hainan Medical University, Hainan Province 571199, People's Republic of China
| | - De-E Yu
- International School of Public Health and One Health, Hainan Medical University, Hainan Province 571199, People's Republic of China
| | - Na Li
- International School of Public Health and One Health, Hainan Medical University, Hainan Province 571199, People's Republic of China
| | - Qiong-Jun Xu
- International School of Public Health and One Health, Hainan Medical University, Hainan Province 571199, People's Republic of China
| | - Yong-Jiang Zhou
- Heinz Mehlhorn Academician Workstation, Maternal, Child and Adolescent Health, International School of Public Health and One Health, Hainan Medical University, Hainan Province 571199, People's Republic of China.
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Siegmund SE, Al-Obaidy KI, Tsai HK, Idrees MT, Akgul M, Acosta AM, Hirsch MS. Concordance of MTOR Pathway Mutations and the Diagnosis of Renal Low-Grade Oncocytic Tumor (LOT). Int J Surg Pathol 2024; 32:316-330. [PMID: 37357748 DOI: 10.1177/10668969231178032] [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: 06/27/2023]
Abstract
The differential diagnosis for oncocytic renal tumors spans the spectrum from benign entities to more aggressive renal cell carcinomas (RCC). Recent work has characterized a provisional renal oncocytic neoplasm, namely the low-grade oncocytic tumor (LOT), which demonstrates overlapping morphologic features with oncocytoma and chromophobe RCC, but also has a unique immunoprofile (ie, diffusely positive for KRT7, negative for KIT) and a high rate (80% to 100%) of mTOR pathway gene alterations. Given the diagnostic overlap among oncocytic tumors, we looked for concordance between mTOR pathway mutations and LOT. Thirty low-grade renal oncocytic neoplasms underwent histologic review and immunohistochemistry for KRT7 and KIT. Tumors were classified as "determinate" (eg, LOT) for tumors with solid, nested or vaguely tubular growth and diffuse KRT7 staining and negative KIT, or "indeterminate" if the morphology and/or immunostains did not fully support a definitive LOT diagnosis. Next-generation sequencing was performed without any knowledge of the diagnoses, and identified mTOR pathway mutations in 80% (12/15) of the determinate tumors, compared with 7% (1/15) in the indeterminate group. One determinate tumor was reclassified as papillary RCC (MTOR mutation negative) and 6 indeterminate tumors were confirmed to be oncocytoma (N = 4), clear cell RCC or papillary RCC with reverse polarity, respectively. Overall, integration of morphology, immunohistochemistry, and molecular data enabled a final definitive diagnosis for 70% of tumors (21 of the total 30), with a high concordance (93%) for LOT specifically in the determinate group; the remaining 9 tumors (30%) were classified as renal oncocytic neoplasm, not otherwise specified.
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Affiliation(s)
- Stephanie E Siegmund
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Khaleel I Al-Obaidy
- Department of Pathology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Harrison K Tsai
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Center for Advanced Molecular Diagnostics, Brigham and Women's Hospital, Boston, MA, USA
| | - Muhammad T Idrees
- Department of Pathology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Mahmut Akgul
- Department of Pathology, Albany Medical Center, Albany, NY, USA
| | - Andres M Acosta
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Michelle S Hirsch
- Department of Pathology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
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18
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Chen H, Li L, Liu H, Qin P, Chen R, Liu S, Xiong H, Li Y, Yang Z, Xie M, Yang H, Jiang Q. PAX2 is regulated by estrogen/progesterone through promoter methylation in endometrioid adenocarcinoma and has an important role in carcinogenesis via the AKT/mTOR signaling pathway. J Pathol 2024; 262:467-479. [PMID: 38185904 DOI: 10.1002/path.6249] [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: 04/17/2023] [Revised: 08/08/2023] [Accepted: 12/07/2023] [Indexed: 01/09/2024]
Abstract
Endometrioid adenocarcinoma (EEC) is one of the most common cancers of the female reproductive system. In recent years, much emphasis has been placed on early diagnosis and treatment. PAX2 (Paired box 2) inactivation is reportedly an important biomarker for endometrioid intraepithelial neoplasia (EIN) and EEC. However, the role of PAX2 in EEC carcinogenesis remains unclear. PAX2 expression and associated clinical characteristics were analyzed via The Cancer Genome Atlas, Gene Expression Omnibus, and Cancer Cell Line Encyclopedia databases and clinical paired EIN/EEC tissue samples. Bioinformatic analysis was conducted to identify the putative molecular function and mechanism of PAX2. Cell proliferation, colony formation, cell migration, and invasion assays in vitro, and mouse xenograft models were utilized to study the biological functions of PAX2 in vivo. Pyrosequencing and the demethylating drug 5-Aza-dc were used to verify promoter methylation in clinical tissues and cell lines, respectively. The mechanism underlying the regulatory effect of estrogen (E2) and progesterone (P4) on PAX2 expression was investigated by receptor block assay and double luciferase reporter assay. PAX2 expression was found to be significantly downregulated in EIN and EEC tissues, its overexpression inhibited EEC cell malignant behaviors in vivo and in vitro and inhibited the AKT/mTOR signaling pathway. PAX2 inactivation in EEC was related to promoter methylation, and its expression was regulated by E2 and P4 through their receptors via promoter methylation. Our findings elucidated the expression and function of PAX2 in EEC and have provided hitherto undocumented evidence of the underlying molecular mechanisms. PAX2 expression is suppressed by estrogen prompting its methylation through estrogen receptor. Furthermore, PAX2 regulates the AKT/mTOR signaling pathway to influence EEC progression. © 2024 The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Hui Chen
- Department of Pathology, Guangdong Provincial Key Laboratory of Major Obstetric Disease, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, PR China
| | - Lingjun Li
- Department of Pathology, Guangdong Provincial Key Laboratory of Major Obstetric Disease, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, PR China
- Department of Pathology, Jingmen Central Hospital, Jingmen, PR China
| | - Huimin Liu
- Department of Pathology, Guangdong Provincial Key Laboratory of Major Obstetric Disease, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, PR China
| | - Ping Qin
- Department of Pathology, Guangdong Provincial Key Laboratory of Major Obstetric Disease, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, PR China
| | - Ruichao Chen
- Department of Pathology, Guangdong Provincial Key Laboratory of Major Obstetric Disease, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, PR China
| | - Shaoyan Liu
- Department of Pathology, Guangdong Provincial Key Laboratory of Major Obstetric Disease, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, PR China
| | - Hanzhen Xiong
- Department of Pathology, Guangdong Provincial Key Laboratory of Major Obstetric Disease, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, PR China
| | - Yang Li
- Department of Pathology, Guangdong Provincial Key Laboratory of Major Obstetric Disease, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, PR China
| | - Zhongfeng Yang
- Department of Pathology, Guangdong Provincial Key Laboratory of Major Obstetric Disease, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, PR China
| | - Mingyu Xie
- Department of Pathology, Guangdong Provincial Key Laboratory of Major Obstetric Disease, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, PR China
| | - Haili Yang
- Department of Pathology, Guangdong Provincial Key Laboratory of Major Obstetric Disease, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, PR China
| | - Qingping Jiang
- Department of Pathology, Guangdong Provincial Key Laboratory of Major Obstetric Disease, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Third Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, PR China
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Wang L, Tian S, Ruan S, Wei J, Wei S, Chen W, Hu H, Qin W, Li Y, Yuan H, Mao J, Xu Y, Xie J. Neuroprotective effects of cordycepin on MPTP-induced Parkinson's disease mice via suppressing PI3K/AKT/mTOR and MAPK-mediated neuroinflammation. Free Radic Biol Med 2024; 216:60-77. [PMID: 38479634 DOI: 10.1016/j.freeradbiomed.2024.02.023] [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: 12/23/2023] [Revised: 02/23/2024] [Accepted: 02/27/2024] [Indexed: 03/20/2024]
Abstract
Parkinson's disease (PD) is a prevalent progressive and multifactorial neurodegenerative disorder. Cordycepin is known to exhibit antitumor, anti-inflammatory, antioxidative stress, and neuroprotective effects; however, few studies have explored the neuroprotective mechanism of cordycepin in PD. Using a 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced mouse model, we investigated the impact of cordycepin on PD and its underlying molecular mechanisms. The findings indicated that cordycepin significantly mitigated MPTP-induced behavior disorder and neuroapoptosis, diminished the loss of dopaminergic neurons in the striatum-substantia nigra pathway, elevated striatal monoamine levels and its metabolites, and inhibited the polarization of microglia and the expression of pro-inflammatory factors. Subsequent proteomic and phosphoproteomic analyses revealed the involvement of the MAPK, mTOR, and PI3K/AKT signaling pathways in the protective mechanism of cordycepin. Cordycepin treatment inhibited the activation of the PI3K/AKT/mTOR signaling pathway and enhanced the expression of autophagy proteins in the striatum and substantia nigra. We also demonstrated the in vivo inhibition of the ERK/JNK signaling pathway by cordycepin treatment. In summary, our investigation reveals that cordycepin exerts neuroprotective effects against PD by promoting autophagy and suppressing neuroinflammation and neuronal apoptosis by inhibiting the PI3K/AKT/mTOR and ERK/JNK signaling pathways. This finding highlights the favorable characteristics of cordycepin in neuroprotection and provides novel molecular insights into the neuroprotective role of natural products in PD.
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Affiliation(s)
- Linhai Wang
- Flavour Science Research Center, College of Chemistry, Zhengzhou University, Zhengzhou, China; Beijing Life Science Academy (BLSA), Beijing, China.
| | - Shu Tian
- Inner Mongolia Kunming Cigarette Limited Liability Company, Huhhot, Inner Mongolia Autonomous Region, China.
| | - Sisi Ruan
- Flavour Science Research Center, College of Chemistry, Zhengzhou University, Zhengzhou, China; Beijing Life Science Academy (BLSA), Beijing, China.
| | - Jingjing Wei
- Flavour Science Research Center, College of Chemistry, Zhengzhou University, Zhengzhou, China; Beijing Life Science Academy (BLSA), Beijing, China.
| | - Sijia Wei
- Xinxiang Central Hospital, Xinxiang, Hennan, China.
| | - Weiwei Chen
- Department of Medical Genetics and Cell Biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China.
| | - Hangcui Hu
- Department of Medical Genetics and Cell Biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China.
| | - Weiwei Qin
- Department of Neurology, State Key Clinical Specialty of the Ministry of Health for Neurology, Henan Provincial People's Hospital, Zhengzhou, Henan, China.
| | - Yan Li
- Flavour Science Research Center, College of Chemistry, Zhengzhou University, Zhengzhou, China.
| | - Hang Yuan
- Flavour Science Research Center, College of Chemistry, Zhengzhou University, Zhengzhou, China.
| | - Jian Mao
- Flavour Science Research Center, College of Chemistry, Zhengzhou University, Zhengzhou, China; Beijing Life Science Academy (BLSA), Beijing, China.
| | - Yan Xu
- Department of Medical Genetics and Cell Biology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China.
| | - Jianping Xie
- Flavour Science Research Center, College of Chemistry, Zhengzhou University, Zhengzhou, China; Beijing Life Science Academy (BLSA), Beijing, China.
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20
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Goztepe M, Eroglu O. Research of the unrecognised functions of miR-375 in prostate cancer cells. Cell Mol Biol (Noisy-le-grand) 2024; 70:212-218. [PMID: 38650131 DOI: 10.14715/cmb/2024.70.3.32] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Indexed: 04/25/2024]
Abstract
Many cancers, including prostate cancer, have miRNAs with altered expression levels. These miRNAs play a pivotal role in regulating cancer initiation, invasion, and metastasis. miRNAs are an important component in cancer diagnosis and therapy and can play a key role as biomarkers or chemotherapeutic agents. This investigation aimed to show the effects of miR-375 on PCa. In this project, target prediction tools and the KEGG pathway were performed to determine the potential targets of miR-375. Transfection was performed using miR-375 mimic and inhibitor. The actions of miRNAs on cell viability and migration were examined in PCa cells. In addition, qRT-PCR was executed to evaluate changes in gene expression in the PI3K-mTOR pathway. The analyses exposed that the upregulation of miR-375 repressed the viability at 48 h. While stimulation of miR-375 did not repress the migration, suppression of miR-375 reduced the migration at 24 and 48 hours. The predicted target TSC1 gene is not directly targeted by miR-375. Interestingly, in response to PIK3CA increase, mTOR expression was suppressed in all cells except LNCAP cells. In conclusion, miR-375 has anti-proliferative and cell migration inhibitory effects in prostate cancer. However, studies demonstrate that miR-375 may have tumor suppressor and oncogenic effects when considering cell molecular differences.
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Affiliation(s)
- Merve Goztepe
- Department of Medical Services and Techniques, Vocational School of Health Services, Bilecik Seyh Edebali University, Bilecik, Turkey.
| | - Onur Eroglu
- Department of Molecular Biology and Genetics, Faculty of Science, Bilecik Seyh Edebali University, Bilecik, Turkey.
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21
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Liu J, Jiang Y, Chen C, Zhang L, Wang J, Yang C, Wu T, Yang S, Tao C, Wang Y. Bone Morphogenetic Protein 2 Enhances Porcine Beige Adipogenesis via AKT/mTOR and MAPK Signaling Pathways. Int J Mol Sci 2024; 25:3915. [PMID: 38612723 PMCID: PMC11012093 DOI: 10.3390/ijms25073915] [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: 02/22/2024] [Revised: 03/17/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Bone morphogenetic protein 2 (BMP2) has been reported to regulate adipogenesis, but its role in porcine beige adipocyte formation remains unclear. Our data reveal that BMP2 is significantly induced at the early stages of porcine beige adipocyte differentiation. Additionally, supplementing rhBMP2 during the early stages, but not the late stages of differentiation, significantly enhances porcine SVF adipogenesis, thermogenesis, and proliferation. Furthermore, compared to the empty plasmid-transfected-SVFs, BMP2-overexpressed SVFs had the enhanced lipid accumulation and thermogenesis, while knockdown of BMP2 in SVFs exhibited the opposite effect. The RNA-seq of the above three types of cells revealed the enrichment of the annotation of thermogenesis, brown cell differentiation, etc. In addition, the analysis also highlights the significant enrichment of cell adhesion, the MAPK cascade, and PPARγ signaling. Mechanistically, BMP2 positively regulates the adipogenic and thermogenic capacities of porcine beige adipocytes by activating PPARγ expression through AKT/mTOR and MAPK signaling pathways.
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Affiliation(s)
- Jiali Liu
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (J.L.); (C.C.); (L.Z.); (J.W.); (C.Y.); (T.W.); (S.Y.)
| | - Yao Jiang
- National Animal Husbandry Service, Beijing 100125, China;
| | - Chuanhe Chen
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (J.L.); (C.C.); (L.Z.); (J.W.); (C.Y.); (T.W.); (S.Y.)
| | - Lilan Zhang
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (J.L.); (C.C.); (L.Z.); (J.W.); (C.Y.); (T.W.); (S.Y.)
| | - Jiahao Wang
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (J.L.); (C.C.); (L.Z.); (J.W.); (C.Y.); (T.W.); (S.Y.)
| | - Chunhuai Yang
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (J.L.); (C.C.); (L.Z.); (J.W.); (C.Y.); (T.W.); (S.Y.)
| | - Tianwen Wu
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (J.L.); (C.C.); (L.Z.); (J.W.); (C.Y.); (T.W.); (S.Y.)
| | - Shulin Yang
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (J.L.); (C.C.); (L.Z.); (J.W.); (C.Y.); (T.W.); (S.Y.)
| | - Cong Tao
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (J.L.); (C.C.); (L.Z.); (J.W.); (C.Y.); (T.W.); (S.Y.)
| | - Yanfang Wang
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (J.L.); (C.C.); (L.Z.); (J.W.); (C.Y.); (T.W.); (S.Y.)
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22
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Yu YY, Yang Y, Jiang J. Moxibustion preconditioning reduces inflammatory response in rats with cerebral ischemia-reperfusion injury by regulating PI3K / AKT / mTOR signaling pathway. Zhen Ci Yan Jiu 2024; 49:238-246. [PMID: 38500320 DOI: 10.13702/j.1000-0607.20230267] [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] [Indexed: 03/20/2024]
Abstract
OBJECTIVES To observe the effect of moxibustion preconditioning on inflammatory response in rats with cerebral ischemia reperfusion injury (CIRI), so as to explore its mechanisms underlying improving CIRI. METHODS Seventy-five male SD rats were randomly divided into sham operation, model, moxibustion preconditioning 3 days (Moxi 1), moxibustion preconditioning 5 days (Moxi 2) and moxibustion preconditioning 7 days (Moxi 3) groups, with 15 rats in each group. Moxibustion was applied at "Baihui"(GV20), "Dazhui"(GV14) and "Zusanli"(ST36) for 20 min once a day, totally for 3, 5 or 7 days. Thirty minutes after the last moxibustion treatment, the CIRI model was established by occlusion of the middle cerebral artery. The neurological deficit score was assessed by using Longa's method. The infarct size of the brain assessed after staining with 2% triphenyltetrazolium chloride (TTC). The morphological changes of cortical neurons were observed by HE staining. The contents of inflammatory factors interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), S-100β protein (S-100β) and neuron-specific enolase (NSE) were detected by ELISA. The expression of phosphatidylinositol-3-kinase (PI3K), p-PI3K, protein kinase B (AKT) and mammalian target of rapamycin (mTOR) proteins in the ischemic cortex tissues were detected by immunohistochemistry and Western blot. RESULTS Compared with the sham operation group, the neurological function score and the percentage of cerebral ischemic volume were increased (P<0.01). The contents of serum IL-1β, TNF-α, S-100β and NSE were significantly increased (P<0.01), while the protein expressions of PI3K, p-PI3K, AKT and mTOR in the cerebral cortex were significantly decreased (P<0.01) in the model group. Compared with the model group, the neurological function score and the percentage of cerebral ischemic volume were significantly decreased (P<0.01). The contents of serum IL-1β, TNF-α, S-100β and NSE were significantly decreased (P<0.01), and the expressions of PI3K, p-PI3K, AKT and mTOR proteins in the cerebral cortex were significantly increased (P<0.01) in three moxibustion groups. Compared with the Moxi 1 and Moxi 2 groups, the above indicators were significantly improved in rats of the Moxi 3 group (P<0.01, P<0.05). CONCLUSIONS Moxibustion preconditioning can significantly improve the neurological function of rats after ischemia-reperfusion, inhibit serum inflammatory factors IL-1 β and TNF-α, inhibit brain tissue injury markers S-100β and NSE, which may be related to the activation of PI3K/AKT/mTOR signaling pathway. The protective effect of moxibustion preconditioning for 7 days on CIRI was better than that of 5 days and 3 days.
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Affiliation(s)
- Yan-Yan Yu
- College of Traditional Chinese Medicine, Xinjiang Medical University, Urumuqi 830011, China
| | - Yue Yang
- College of Traditional Chinese Medicine, Xinjiang Medical University, Urumuqi 830011, China
| | - Jie Jiang
- College of Traditional Chinese Medicine, Xinjiang Medical University, Urumuqi 830011, China.
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23
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Clémot M, D’Alterio C, Kwang AC, Jones DL. mTORC1 is required for differentiation of germline stem cells in the Drosophila melanogaster testis. PLoS One 2024; 19:e0300337. [PMID: 38512882 PMCID: PMC10956854 DOI: 10.1371/journal.pone.0300337] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 02/26/2024] [Indexed: 03/23/2024] Open
Abstract
Metabolism participates in the control of stem cell function and subsequent maintenance of tissue homeostasis. How this is achieved in the context of adult stem cell niches in coordination with other local and intrinsic signaling cues is not completely understood. The Target of Rapamycin (TOR) pathway is a master regulator of metabolism and plays essential roles in stem cell maintenance and differentiation. In the Drosophila male germline, mTORC1 is active in germline stem cells (GSCs) and early germ cells. Targeted RNAi-mediated downregulation of mTor in early germ cells causes a block and/or a delay in differentiation, resulting in an accumulation of germ cells with GSC-like features. These early germ cells also contain unusually large and dysfunctional autolysosomes. In addition, downregulation of mTor in adult male GSCs and early germ cells causes non-autonomous activation of mTORC1 in neighboring cyst cells, which correlates with a disruption in the coordination of germline and somatic differentiation. Our study identifies a previously uncharacterized role of the TOR pathway in regulating male germline differentiation.
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Affiliation(s)
- Marie Clémot
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA, United States of America
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA, United States of America
| | - Cecilia D’Alterio
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA, United States of America
| | - Alexa C. Kwang
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA, United States of America
| | - D. Leanne Jones
- Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, Los Angeles, CA, United States of America
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, CA, United States of America
- Departments of Anatomy, Division of Geriatrics, University of California, San Francisco, San Francisco, CA, United States of America
- Departments of Medicine, Division of Geriatrics, University of California, San Francisco, San Francisco, CA, United States of America
- Eli and Edythe Broad Center for Regeneration Medicine, University of California, San Francisco, San Francisco, CA, United States of America
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24
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Vrijmoeth HD, Ursinus J, Botey-Bataller J, Kuijpers Y, Chu X, van de Schoor FR, Scicluna BP, Xu CJ, Netea MG, Kullberg BJ, van den Wijngaard CC, Li Y, Hovius JW, Joosten LAB. Genome-wide analyses in Lyme borreliosis: identification of a genetic variant associated with disease susceptibility and its immunological implications. BMC Infect Dis 2024; 24:337. [PMID: 38515037 PMCID: PMC10956190 DOI: 10.1186/s12879-024-09217-z] [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: 08/22/2023] [Accepted: 03/12/2024] [Indexed: 03/23/2024] Open
Abstract
BACKGROUND Genetic variation underly inter-individual variation in host immune responses to infectious diseases, and may affect susceptibility or the course of signs and symptoms. METHODS We performed genome-wide association studies in a prospective cohort of 1138 patients with physician-confirmed Lyme borreliosis (LB), the most common tick-borne disease in the Northern hemisphere caused by the bacterium Borrelia burgdorferi sensu lato. Genome-wide variants in LB patients-divided into a discovery and validation cohort-were compared to two healthy cohorts. Additionally, ex vivo monocyte-derived cytokine responses of peripheral blood mononuclear cells to several stimuli including Borrelia burgdorferi were performed in both LB patient and healthy control samples, as were stimulation experiments using mechanistic/mammalian target of rapamycin (mTOR) inhibitors. In addition, for LB patients, anti-Borrelia antibody responses were measured. Finally, in a subset of LB patients, gene expression was analysed using RNA-sequencing data from the ex vivo stimulation experiments. RESULTS We identified a previously unknown genetic variant, rs1061632, that was associated with enhanced LB susceptibility. This polymorphism was an eQTL for KCTD20 and ETV7 genes, and its major risk allele was associated with upregulation of the mTOR pathway and cytokine responses, and lower anti-Borrelia antibody production. In addition, we replicated the recently reported SCGB1D2 locus that was suggested to have a protective effect on B. burgdorferi infection, and associated this locus with higher Borrelia burgdorferi antibody indexes and lower IL-10 responses. CONCLUSIONS Susceptibility for LB was associated with higher anti-inflammatory responses and reduced anti-Borrelia antibody production, which in turn may negatively impact bacterial clearance. These findings provide important insights into the immunogenetic susceptibility for LB and may guide future studies on development of preventive or therapeutic measures. TRIAL REGISTRATION The LymeProspect study was registered with the International Clinical Trials Registry Platform (NTR4998, registration date 2015-02-13).
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Affiliation(s)
- Hedwig D Vrijmoeth
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, 6500 HB, the Netherlands
| | - Jeanine Ursinus
- Department of Internal Medicine, Division of Infectious Diseases, Amsterdam UMC, Location AMC, University of Amsterdam, P.O. Box 22660, Amsterdam, 1100 DD, the Netherlands
- Amsterdam Institute for Infection and Immunity, Amsterdam, the Netherlands
| | - Javier Botey-Bataller
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, 6500 HB, the Netherlands
- Department of Computational Biology for Individualised Infection Medicine, Centre for Individualised Infection Medicine, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, 30625, Hannover, Germany
- TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, 30625, Hannover, Germany
| | - Yunus Kuijpers
- Department of Computational Biology for Individualised Infection Medicine, Centre for Individualised Infection Medicine, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, 30625, Hannover, Germany
- TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, 30625, Hannover, Germany
| | - Xiaojing Chu
- Department of Computational Biology for Individualised Infection Medicine, Centre for Individualised Infection Medicine, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, 30625, Hannover, Germany
- TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, 30625, Hannover, Germany
| | - Freek R van de Schoor
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, 6500 HB, the Netherlands
| | - Brendon P Scicluna
- Department of Applied Biomedical Science, Faculty of Health Sciences, Mater Dei Hospital, University of Malta, MSD 2080, Msida, Malta
- Centre for Molecular Medicine and Biobanking, Biomedical Sciences, University of Malta, MSD 2080, Msida, Malta
| | - Cheng-Jian Xu
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, 6500 HB, the Netherlands
- Department of Computational Biology for Individualised Infection Medicine, Centre for Individualised Infection Medicine, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, 30625, Hannover, Germany
- TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, 30625, Hannover, Germany
| | - Mihai G Netea
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, 6500 HB, the Netherlands
- Department of Immunology and Metabolism, Life and Medical Sciences Institute, University of Bonn, 53113, Bonn, Germany
| | - Bart Jan Kullberg
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, 6500 HB, the Netherlands
| | - Cees C van den Wijngaard
- National Institute for Public Health and Environment (RIVM), Center for Infectious Disease Control, Bilthoven, 3720 BA, the Netherlands
| | - Yang Li
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, 6500 HB, the Netherlands
- Department of Computational Biology for Individualised Infection Medicine, Centre for Individualised Infection Medicine, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, 30625, Hannover, Germany
- TWINCORE, Centre for Experimental and Clinical Infection Research, a joint venture between the Hannover Medical School and the Helmholtz Centre for Infection Research, 30625, Hannover, Germany
| | - Joppe W Hovius
- Department of Internal Medicine, Division of Infectious Diseases, Amsterdam UMC, Location AMC, University of Amsterdam, P.O. Box 22660, Amsterdam, 1100 DD, the Netherlands
- Amsterdam Institute for Infection and Immunity, Amsterdam, the Netherlands
| | - Leo A B Joosten
- Department of Internal Medicine and Radboudumc Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, 6500 HB, the Netherlands.
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25
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Tucker SK, Ghosal R, Swartz ME, Zhang S, Eberhart JK. Zebrafish raptor mutation inhibits the activity of mTORC1, inducing craniofacial defects due to autophagy-induced neural crest cell death. Development 2024; 151:dev202216. [PMID: 38512806 PMCID: PMC11006402 DOI: 10.1242/dev.202216] [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: 07/25/2023] [Accepted: 01/26/2024] [Indexed: 03/23/2024]
Abstract
The mechanistic target of rapamycin (mTOR) coordinates metabolism and cell growth with environmental inputs. mTOR forms two functional complexes: mTORC1 and mTORC2. Proper development requires both complexes but mTORC1 has unique roles in numerous cellular processes, including cell growth, survival and autophagy. Here, we investigate the function of mTORC1 in craniofacial development. We created a zebrafish raptor mutant via CRISPR/Cas9, to specifically disrupt mTORC1. The entire craniofacial skeleton and eyes were reduced in size in mutants; however, overall body length and developmental timing were not affected. The craniofacial phenotype associates with decreased chondrocyte size and increased neural crest cell death. We found that autophagy is elevated in raptor mutants. Chemical inhibition of autophagy reduced cell death and improved craniofacial phenotypes in raptor mutants. Genetic inhibition of autophagy, via mutation of the autophagy gene atg7, improved facial phenotypes in atg7;raptor double mutants, relative to raptor single mutants. We conclude that finely regulated levels of autophagy, via mTORC1, are crucial for craniofacial development.
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Affiliation(s)
- Scott K. Tucker
- Department of Molecular Biosciences, Waggoner Center for Alcohol and Addiction Research and Institute for Neuroscience, University of Texas, Austin, TX 78712, USA
| | - Ritika Ghosal
- Department of Molecular Biosciences, Waggoner Center for Alcohol and Addiction Research and Institute for Neuroscience, University of Texas, Austin, TX 78712, USA
| | - Mary E. Swartz
- Department of Molecular Biosciences, Waggoner Center for Alcohol and Addiction Research and Institute for Neuroscience, University of Texas, Austin, TX 78712, USA
| | - Stephanie Zhang
- Department of Molecular Biosciences, Waggoner Center for Alcohol and Addiction Research and Institute for Neuroscience, University of Texas, Austin, TX 78712, USA
| | - Johann K. Eberhart
- Department of Molecular Biosciences, Waggoner Center for Alcohol and Addiction Research and Institute for Neuroscience, University of Texas, Austin, TX 78712, USA
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26
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Zhu Y, Wang F, Ma Z, Hou S, Deng W, Zhang Y, Wu Q. Anti-proliferation and apoptosis induced via the mTOR/PGC-1α signaling pathway in trophoblast cells of miscarriage. Exp Cell Res 2024; 436:113959. [PMID: 38395376 DOI: 10.1016/j.yexcr.2024.113959] [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: 11/10/2023] [Revised: 01/30/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024]
Abstract
Miscarriage is a common complication during early pregnancy and affects approximately 10%-15% of all pregnant women. Several studies have reported that the abnormal expression of mitochondrial oxidative stress-related genes might be involved in the occurrence and progression of miscarriage. The present study attempted to uncover the role of peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α) in miscarriage chorionic villous tissue. The hypothesis that PGC-1α is crucial for glycolysis and oxidative phosphorylation during early pregnancy was tested. The results showed that the mRNA and protein levels of PGC-1α were significantly increased in the miscarriage chorionic villous tissues compared with the artificial selective abortion group, and that the expression was regulated by mTOR in knockdown and overexpression of mTOR in HTR8 cell lines. PGC-1α also promoted mitochondrion oxidative phosphorylation but inhibited glycolysis process. In addition, PGC-1α could drive ROS production, reduce mitochondrial membrane potential and block NADPH synthesis, resulting in cell cycle arrest and cell apoptosis, eventually leading to miscarriage. These results suggested that the aberrant expression of PGC-1α is involved in the etiology of early miscarriage, providing new perspectives regarding the mechanisms of miscarriage and a potential therapeutic target for miscarriage.
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Affiliation(s)
- Yuanchang Zhu
- Fertility Center, Shenzhen Hengsheng Hospital, Shenzhen, China.
| | - Feng Wang
- Fertility Center, Shenzhen Hengsheng Hospital, Shenzhen, China
| | - Zhuanghong Ma
- Fertility Center, Shenzhen Hengsheng Hospital, Shenzhen, China
| | - Sumei Hou
- Fertility Center, Shenzhen Hengsheng Hospital, Shenzhen, China
| | - Weifen Deng
- Fertility Center, Shenzhen Hengsheng Hospital, Shenzhen, China
| | - Yaou Zhang
- Key Lab in Healthy Science and Technology, Division of Life Science, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
| | - Qiongfang Wu
- Reproductive Medicine Center, Jiangxi Maternal and Child Health Hospital, Nanchang, China.
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Tao SN, Liu XC, Wang YY, Yang H. [LncRNA SNHG11 promotes malignant progression of colorectal cancer cells through the PI3K/Akt/mTOR signaling pathway]. Zhonghua Yi Xue Za Zhi 2024; 104:758-765. [PMID: 38462356 DOI: 10.3760/cma.j.cn112137-20231103-00998] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Objective: To investigate the effects of lncRNA SNHG11 on proliferation, migration, invasion and apoptosis of colorectal cancer cancer cells and possible mechanisms. Methods: qRT-PCR was performed to detect the expression level of lncRNA SNHG11 in colorectal cancer tissues and its related cell lines. The correlation between SNHG11 expression and clinical prognosis of patients was assessed by bioinformatics techniques. Cultured CRC cell lines were transfected with shCtrl (shCtrl group), shSNHG11#1 (shSNHG11#1 group), shSNHG11#2 (shSNHG11#2 group), Control cDNA (Control cDNA group), and SNHG11 cDNA (SNHG11 cDNA), respectively. Thiazolyl blue (MTT), clone formation assay, Transwell assay, cell scratch assay, and flow cytometry were used to detect the proliferation, migration, invasion, and apoptosis of CRC cells in each group. Western protein blotting was used to detect the expression of relevant proteins in each group, and the effect of lncRNA SNHG11 knockdown on the growth of tumour cells in vivo was analysed by nude mice tumouring assay. Phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt)/mammalian target of rapamycin (mTOR) signalling pathway inhibitor LY294002 was used for rescue experiments. Results: The expression of lncRNA SNHG11 was significantly higher in colorectal cancer cells and tissues than in normal tissues (P<0.05). Survival analysis showed that the expression level of SNHG11 was not statistically associated with CRC survival (P>0.05). shSNHG11#2 group compared with shCtrl group. MTT OD490/570 values decreased, the number of CRC cell clones decreased, the number of Transwell cells decreased, the area of cell scratch decreased, and the apoptosis rate increased (P<0.05). The mesenchymal markers matrix metalloproteinase (MMP9), N-cadherin and vimentin were significantly reduced, and the expression of the epithelial marker E-cadherin was upregulated. The expression of anti-apoptotic proteins Bcl-2 and Bcl-xl was decreased, and the expression of pro-apoptotic protein Bax was increased (P<0.05).In vivo experiments showed that lncRNA SNHG11 knockdown inhibited the growth of colorectal cancer cells, and the expression of Ki67 was reduced in tumours (P<0.05). LncRNA SNHG11 knockdown inhibited the expression of p-PI3K, p-Akt and p-mTOR.The PI3K/Akt/mTOR signaling pathway inhibitor LY294002 was able to restore the malignant cytological progression of colorectal cancer cells induced by the overexpression of lncRNA SNHG11. Conclusions: LncRNA SNHG11 is highly expressed in colorectal cancer. lncRNA SNHG11 can promote the malignant progression of colorectal cancer cells by regulating the PI3K/Akt/mTOR signaling pathway, and this finding provides a new theoretical basis for targeted therapy of colorectal cancer.
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Affiliation(s)
- S N Tao
- Department of Nuclear Medicine, the First Affiliated Hospital of Wannan Medical College,Wuhu 241000, China
| | - X C Liu
- Department of Nuclear Medicine, the First Affiliated Hospital of Wannan Medical College,Wuhu 241000, China
| | - Y Y Wang
- Department of Nuclear Medicine, the First Affiliated Hospital of Wannan Medical College,Wuhu 241000, China
| | - H Yang
- Central Laboratory,Anhui Province Key Laboratory of Non-coding RNA Basic and Clinical Transformation,the First Affiliated Hospital of Wannan Medical College,Wuhu 241000, China
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Hori Y, Yoh T, Nishino H, Okura K, Kurimoto M, Takamatsu Y, Satoh M, Nishio T, Koyama Y, Ishii T, Iwaisako K, Seo S, Hatano E. Ferroptosis-related gene glutathione peroxidase 4 promotes reprogramming of glucose metabolism via Akt-mTOR axis in intrahepatic cholangiocarcinoma. Carcinogenesis 2024; 45:119-130. [PMID: 38123365 DOI: 10.1093/carcin/bgad094] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 11/24/2023] [Accepted: 12/16/2023] [Indexed: 12/23/2023] Open
Abstract
The role of the ferroptosis-related gene glutathione peroxidase 4 (GPX4) in oncology has been extensively investigated. However, the clinical implications of GPX4 in patients with intrahepatic cholangiocarcinoma (ICC) remain unknown. This study aimed to evaluate the prognostic impact of GPX4 and its underlying molecular mechanisms in patients with ICC. Fifty-seven patients who underwent surgical resection for ICC between 2010 and 2017 were retrospectively analyzed. Based on the immunohistochemistry, patients were divided into GPX4 high (n = 15) and low (n = 42) groups, and clinical outcomes were assessed. Furthermore, the roles of GPX4 in cell proliferation, migration and gene expression were analyzed in ICC cell lines in vitro and in vivo. The results from clinical study showed that GPX4 high group showed significant associations with high SUVmax on 18F-fluorodeoxyglucose-positron emission tomography (≥8.0, P = 0.017), multiple tumors (P = 0.004), and showed glucose transporter 1 (GLUT1) high expression with a trend toward significance (P = 0.053). Overall and recurrence-free survival in the GPX4 high expression group were significantly worse than those in the GPX4 low expression group (P = 0.038 and P < 0.001, respectively). In the experimental study, inhibition of GPX4 attenuated cell proliferation and migration in ICC cell lines. Inhibition of GPX4 also decreased the expression of glucose metabolism-related genes, such as GLUT1 or HIF1α. Mechanistically, these molecular changes are regulated in Akt-mechanistic targets of rapamycin axis. In conclusion, this study suggested the pivotal value of GPX4 serving as a prognostic marker for patients with ICC. Furthermore, GPX4 can mediate glucose metabolism of ICC.
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Affiliation(s)
- Yutaro Hori
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomoaki Yoh
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroto Nishino
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Keisuke Okura
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Makoto Kurimoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuichi Takamatsu
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Motohiko Satoh
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takahiro Nishio
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yukinori Koyama
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takamichi Ishii
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Keiko Iwaisako
- Department of Medical Life Systems, Faculty of Life and Medical Science, Doshisha University, Kyotanabe, Japan
| | - Satoru Seo
- Department of Surgery, Faculty of Medicine, Kochi Medical School, Nankoku, Japan
| | - Etsuro Hatano
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Luo X, Zhang J, Guo C, Jiang N, Zhang F, Jiao Q, Xu K, Yang J, Qu G, Lv XB, Zhang Z. Solute carrier family 35 member A2 regulates mitophagy through the PI3K/AKT/mTOR axis, promoting the proliferation, migration, and invasion of osteosarcoma cells. Gene 2024; 898:148110. [PMID: 38151177 DOI: 10.1016/j.gene.2023.148110] [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: 10/22/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 12/29/2023]
Abstract
The treatment of osteosarcoma patients exhibits individual variability, underscoring the critical importance of targeted therapy. Although (Solute carrier family 35 member A2) SLC35A2's role in the progression of various cancers has been extensively investigated, its specific implications in osteosarcoma remain unexplored. Leveraging data from the (The Cancer Genome Atlas) TCGA and (Genotype-Tissue Expression) GTEx databases, we have discerned that SLC35A2 is notably upregulated in osteosarcoma and correlates with the prognosis of osteosarcoma patients. Consequently, it becomes imperative to delve into the role of SLC35A2 in the context of osteosarcoma. Our research substantiates that SLC35A2 exerts a notable influence on mitochondrial autophagy in osteosarcoma, thereby exerting cascading effects on the proliferation, migration, invasion, and apoptosis of osteosarcoma cells. Mechanistically, SLC35A2 orchestrates mitochondrial autophagy via the PI3K/AKT/mTOR signaling pathway. Moreover, we have conducted rigorous animal experiments to further corroborate the repercussions of SLC35A2 on osteosarcoma growth. In summation, our study elucidates that SLC35A2's modulation of mitochondrial autophagy through the PI3K/AKT/mTOR signaling pathway constitutes a pivotal factor in the malignant progression of osteosarcoma, unveiling promising therapeutic targets for patients grappling with this condition.
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Affiliation(s)
- Xiaohui Luo
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China; Department of Orthopedics, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330008, China; Nanchang Key Laboratory of Orthopaedics, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China; Medical Department of Graduate School, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Jiongfeng Zhang
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China; Department of Orthopedics, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330008, China; Nanchang Key Laboratory of Orthopaedics, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China; Medical Department of Graduate School, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Chong Guo
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China; Department of Orthopedics, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330008, China; Nanchang Key Laboratory of Orthopaedics, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China; Medical Department of Graduate School, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Ning Jiang
- Institute of Integrative Medicine, Dalian Medical University, Dalian, Liaoning, China
| | - Feifei Zhang
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Quahui Jiao
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Kai Xu
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China; Department of Orthopedics, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330008, China; Nanchang Key Laboratory of Orthopaedics, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China; Medical Department of Graduate School, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Jun Yang
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China
| | - Gaoyang Qu
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China; Department of Orthopedics, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330008, China; Nanchang Key Laboratory of Orthopaedics, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China; Medical Department of Graduate School, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330006, China
| | - Xiao-Bin Lv
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China.
| | - Zhiping Zhang
- Jiangxi Key Laboratory of Cancer Metastasis and Precision Treatment, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China; Department of Orthopedics, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi 330008, China; Nanchang Key Laboratory of Orthopaedics, The first hospital of Nanchang, The Third Affiliated Hospital of Nanchang University, Jiangxi Medical College, Nanchang University, Nanchang, China.
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Sztankovics D, Moldvai D, Petővári G, Dankó T, Szalai F, Miyaura R, Varga V, Nagy N, Papp G, Pápay J, Krencz I, Sebestyén A. mTOR hyperactivity and RICTOR amplification as targets for personalized treatments in malignancies. Pathol Oncol Res 2024; 30:1611643. [PMID: 38515456 PMCID: PMC10954904 DOI: 10.3389/pore.2024.1611643] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Accepted: 02/27/2024] [Indexed: 03/23/2024]
Abstract
The increasing knowledge of molecular alterations in malignancies, including mutations and regulatory failures in the mTOR (mechanistic target of rapamycin) signaling pathway, highlights the importance of mTOR hyperactivity as a validated target in common and rare malignancies. This review summarises recent findings on the characterization and prognostic role of mTOR kinase complexes (mTORC1 and mTORC2) activity regarding differences in their function, structure, regulatory mechanisms, and inhibitor sensitivity. We have recently identified new tumor types with RICTOR (rapamycin-insensitive companion of mTOR) amplification and associated mTORC2 hyperactivity as useful potential targets for developing targeted therapies in lung cancer and other newly described malignancies. The activity of mTOR complexes is recommended to be assessed and considered in cancers before mTOR inhibitor therapy, as current first-generation mTOR inhibitors (rapamycin and analogs) can be ineffective in the presence of mTORC2 hyperactivity. We have introduced and proposed a marker panel to determine tissue characteristics of mTOR activity in biopsy specimens, patient materials, and cell lines. Ongoing phase trials of new inhibitors and combination therapies are promising in advanced-stage patients selected by genetic alterations, molecular markers, and/or protein expression changes in the mTOR signaling pathway. Hopefully, the summarized results, our findings, and the suggested characterization of mTOR activity will support therapeutic decisions.
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Ying Y, Yu Z, Wu L. Causal association between mTOR-dependent circulating protein levels and central precocious puberty: a Mendelian randomization study. Front Endocrinol (Lausanne) 2024; 15:1360043. [PMID: 38516410 PMCID: PMC10954777 DOI: 10.3389/fendo.2024.1360043] [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: 12/22/2023] [Accepted: 02/22/2024] [Indexed: 03/23/2024] Open
Abstract
Background The mechanistic target of rapamycin (mTOR) signaling pathway has a significant effect on central precocious puberty (CPP). However, the causality between mTOR-dependent circulating protein levels and CPP is still unclear. Our aim is to assess the effects of seven mTOR-dependent circulating protein levels on CPP using Mendelian randomization (MR). Methods Instrumental variables (IVs) for mTOR-dependent circulating protein levels were retrieved from the proteomics-GWAS INTERVAL study and eQTLGen. The summary-level genetic datasets for CPP outcome were obtained from the FinnGen Consortium. Inverse-variance weighted (IVW) was used as the primary method and the pleiotropy, heterogeneity and robustness of the analyses were detected as sensitivity analysis. Positive exposures in the discovery cohort would be revalidated in the validation cohort. Results This two-sample MR study revealed a causal association between eIF4G level in plasma and CPP in both discovery cohort (IVW: OR = 0.45, 95% CI = 0.22-0.91, p = 0.026) and validation cohort (IVW: OR = 0.45, 95% CI = 0.24-0.85, p = 0.014). Conclusions There was a causal association between eIF4G level in plasma and CPP. Whether eIF4G can be used for the prevention or treatment of CPP needs to be explored in further studies.
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Affiliation(s)
- Yuanxiao Ying
- Department of Pediatrics, Zhoushan Hospital, Wenzhou Medical University, Zhoushan, China
| | - Ze Yu
- Laboratory of Cytobiology & Molecular Biology, Zhoushan Hospital, Wenzhou Medical University, Zhoushan, China
| | - Liping Wu
- Science and Education Section, Zhoushan Hospital, Wenzhou Medical University, Zhoushan, China
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Wang S, Liu B, Su Y, Wang N, Dong P, Xu X, Huang L, Li S, Gu J, Qiu Y, Deng J, Lin Z, Zhou Y. FHL2 promotes the aggressiveness of lung adenocarcinoma by inhibiting autophagy via activation of the PI3K/AKT/mTOR pathway. Thorac Cancer 2024; 15:630-641. [PMID: 38323374 DOI: 10.1111/1759-7714.15234] [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: 10/29/2023] [Revised: 01/18/2024] [Accepted: 01/19/2024] [Indexed: 02/08/2024] Open
Abstract
BACKGROUND Increasing evidence indicates that four and a half LIM domains 2 (FHL2) plays a crucial role in the progression of various cancers. However, the biological functions and molecular mechanism of FHL2 in lung adenocarcinoma (LUAD) remain unclear. METHODS We evaluated the prognostic value of FHL2 in LUAD using public datasets and further confirmed its prognostic value with our clinical data. The biological functions of FHL2 in LUAD were evaluated by in vitro and in vivo experiments. Pathway analysis and rescue experiments were subsequently performed to explore the molecular mechanism by which FHL2 promoted the progression of LUAD. RESULTS FHL2 was upregulated in LUAD tissues compared to adjacent normal lung tissues, and FHL2 overexpression was correlated with unfavorable outcomes in patients with LUAD. FHL2 knockdown significantly suppressed the proliferation, migration and invasion of LUAD cells, while FHL2 overexpression had the opposite effect. Mechanistically, FHL2 upregulated the PI3K/AKT/mTOR pathway and subsequently inhibited autophagy in LUAD cells. The effects FHL2 on the proliferation, migration and invasion of LUAD cells are dependent on the inhibition of autophagy, as of induction autophagy attenuated the aggressive phenotype induced by FHL2 overexpression. CONCLUSIONS FHL2 promotes the progression of LUAD by activating the PI3K/AKT/mTOR pathway and subsequently inhibiting autophagy, which can be exploited as a potential therapeutic target for LUAD.
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Affiliation(s)
- Shuaishuai Wang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Baomo Liu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yan Su
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Nian Wang
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, China
| | - Peixin Dong
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Xiongye Xu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Lixia Huang
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Shaoli Li
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jincui Gu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yanli Qiu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jiating Deng
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Ziying Lin
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yanbin Zhou
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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Chen J, Shen L, Guo Q, Ma S, Zhang Y, Chen J, Qu L, Ng SS, Chen X. The downregulation of Tapasin in dendritic cell regulates CD8 + T cell autophagy to hamper hepatitis B viral clearance in the induced pluripotent stem cell-derived hepatocyte organoid. J Med Virol 2024; 96:e29546. [PMID: 38516804 DOI: 10.1002/jmv.29546] [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: 09/21/2023] [Revised: 02/09/2024] [Accepted: 03/06/2024] [Indexed: 03/23/2024]
Abstract
Tapasin, a crucial molecular chaperone involved viral antigen processing and presentation, plays an important role in antivirus immunity. However, its impact on T cell differentiation in the context of virus clearance remains unclear. In this study, we employed induced pluripotent stem cells to differentiate into hepatocyte-like cell, which were subsequently inserted to the inverted colloidal crystal scaffolds, thus establishing a hepatocyte organoid (HO). By inoculating hepatitis B virus (HBV) particles in the system, we successfully engineered a robust in vitro HBV infection model for at least 3 weeks. Furthermore, we aimed to explore the effects of lentivirus-mediated short hairpin RNA (shRNA) targeting human Tapasin on the differentiation and antiviral function of CD8+ T cells. Specifically, we transfected dendritic cells (DCs) with Tapasin-shRNA and cocultured with T cells. The results demonstrated that Tapasin-shRNA transfected DCs effectively suppressed T cell proliferation and impeded HBV-specific cytotoxic T lymphocyte responses. Our investigation also revealed the role of mTOR pathway activation in reducing autophagy activity within CD8+ T cells. Expressions of autophagy-related proteins, beclin-1, LC3II/LC3I were decreased and PI3K/AKT/mTOR activity was increased in Tapasin-shRNA group. Collectively, our findings elucidate that shRNA targeting the Tapasin gene within DCs inhibits T cell differentiation by reducing autophagy activity to hamper viral clearance in the HBV-infected HO.
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Affiliation(s)
- Jinmei Chen
- Department of Infectious Diseases, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Leer Shen
- Department of Infectious Diseases, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qingxin Guo
- Department of Infectious Diseases, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Siyuan Ma
- Department of Infectious Diseases, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yi Zhang
- Department of Infectious Diseases, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jie Chen
- Department of Infectious Diseases, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lihong Qu
- Department of Infectious Diseases, Shanghai East Hospital, Tongji University, Shanghai, China
| | - Soon Seng Ng
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Xiaohua Chen
- Department of Infectious Diseases, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Shen G, Wu Y, Wang K, Niculescu M, Liu Y, Kang Y, Luo X, Wang W, Chen YH, Liu Y, Wang F, Chen L. Impulsivity and aggression in alcohol withdrawal syndrome is modulated by the interaction of ZNF804A and mTOR polymorphism. Pharmacol Biochem Behav 2024; 236:173708. [PMID: 38216065 DOI: 10.1016/j.pbb.2024.173708] [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: 08/30/2023] [Revised: 12/19/2023] [Accepted: 01/05/2024] [Indexed: 01/14/2024]
Abstract
Alcohol withdrawal syndrome (AWS) is a poorly studied phenotype of alcohol use disorder. Understanding the relationship between allelic interactions and AWS-related impulsivity and aggression could have significant implications. This study aimed to investigate the main and interacting effects of ZNF804A and mTOR on impulsivity and aggression during alcohol withdrawal. 446 Chinese Han adult males with alcohol dependence were included in the study. Impulsivity and aggression were assessed, and genomic DNA was genotyped. Single gene analysis showed that ZNF804A rs1344706 (A allele/CC homozygote) and mTOR rs1057079 (C allele/TT homozygote) were strongly associated with AWS-related impulsivity and aggression. In the allelic group, MANOVA revealed a significant gene x gene interaction, suggesting that risk varied systematically depending on both ZNF804A and mTOR alleles. Additionally, a significant interactive effect of ZNF804A rs1344706 and mTOR rs7525957 was found on motor impulsivity and physical aggression, and the ZNF804A rs1344706 gene variant had significant effects on motor impulsivity and physical aggression only in mTOR rs7525957 TT homozygous carriers. The study showed that specific allelic combinations of ZNF804A and mTOR may have protective or risk-enhancing effects on AWS-related impulsivity and aggression.
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Affiliation(s)
- Guanghui Shen
- Wenzhou Seventh People's Hospital, Wenzhou 325006, China; School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Yuyu Wu
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Kexin Wang
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China
| | | | - Yuqing Liu
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Yimin Kang
- Psychosomatic Medicine Research Division, Inner Mongolia Medical University, Hohhot, China
| | - Xingguang Luo
- Department of Psychiatry, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Wei Wang
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China
| | - Yu-Hsin Chen
- Zhejiang Provincial Clinical Research Center for Mental Disorders, The Affiliated Wenzhou Kangning Hospital, Wenzhou Medical University, Wenzhou, China
| | - Yanlong Liu
- School of Mental Health, Wenzhou Medical University, Wenzhou 325035, China.
| | - Fan Wang
- Beijing Hui-Long-Guan Hospital, Peking University, Beijing, China.
| | - Li Chen
- Zhejiang Provincial Clinical Research Center for Mental Disorders, The Affiliated Wenzhou Kangning Hospital, Wenzhou Medical University, Wenzhou, China.
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Yeşil Ş, Kurucu B, Hamamcı MB, Yılmaz Ş, Şahin G. Treatment of tuberous sclerosis complex manifestations in children with mTOR inhibitors. Childs Nerv Syst 2024; 40:831-837. [PMID: 37947859 DOI: 10.1007/s00381-023-06218-2] [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: 10/16/2023] [Accepted: 11/06/2023] [Indexed: 11/12/2023]
Abstract
PURPOSE Tuberous sclerosis complex (TSC) is a rare autosomal dominant genetic disorder that affects multiple organ systems. Mutations in the TSC1 and TSC2 genes result in the constitutive hyperactivation of the mammalian target of rapamycin (mTOR) pathway, contributing to the growth of benign tumors or hamartomas in various organs. Due to the implication of mTOR pathway dysregulation in the disease pathology, increasing evidence supports the use of mTOR inhibitors for treating multiple manifestations of TSC. METHODS In this study, we conducted a retrospective analysis of clinical findings and treatment data from 38 patients diagnosed with tuberous sclerosis who were followed up in the Pediatric Oncology Clinic between 2010 and 2020. We collected information on patients' ages, genders, affected sites, familial history, imaging findings, presence of tumors, and treatments. RESULTS Among the patients, nine individuals with TSC manifestations were treated with mTOR inhibitors. Specifically, everolimus was successfully administered to five patients with inborn cardiac rhabdomyoma causing hemodynamic impairment. In addition, two patients with refractory seizures received everolimus in combination with anti-epileptic drugs. A patient with renal angiomyolipomas larger than 3 cm was treated with everolimus, while a patient with extensive facial angiofibroma received topical sirolimus. All patients tolerated the mTOR inhibitors well, and the side effects were deemed acceptable. CONCLUSION The utilization of mTOR inhibition in TSC is expected to become more prevalent in clinical practice, as current research is anticipated to provide a better understanding of the therapeutic roles of these treatments in TSC.
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Affiliation(s)
- Şule Yeşil
- Department of Pediatric Hematology and Oncology, Ankara Etlik Integrated Health Campus, Ankara, Turkey.
| | - Burçak Kurucu
- Department of Pediatric Hematology and Oncology, Ankara Etlik Integrated Health Campus, Ankara, Turkey
| | - Melda Berber Hamamcı
- Department of Pediatric Hematology and Oncology, Ankara Etlik Integrated Health Campus, Ankara, Turkey
| | - Şükriye Yılmaz
- Department of Pediatric Radiology, Ankara Etlik Integrated Health Campus, Ankara, Turkey
| | - Gürses Şahin
- Dr. Sami Ulus Maternity and Children's Health and Diseases Training and Research Hospital, Department of Pediatric Hematology and Oncology, Ankara, Turkey
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Yan X, Kuang BH, Ma S, Wang R, Lin J, Zeng YX, Xie X, Feng L. NOP14-mediated ribosome biogenesis is required for mTORC2 activation and predicts rapamycin sensitivity. J Biol Chem 2024; 300:105681. [PMID: 38272224 PMCID: PMC10891341 DOI: 10.1016/j.jbc.2024.105681] [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: 01/29/2023] [Revised: 12/23/2023] [Accepted: 01/08/2024] [Indexed: 01/27/2024] Open
Abstract
The mechanistic target of rapamycin (mTOR) forms two distinct complexes: rapamycin-sensitive mTOR complex 1 (mTORC1) and rapamycin-insensitive mTORC2. mTORC2 primarily regulates cell survival by phosphorylating Akt, though the upstream regulation of mTORC2 remains less well-defined than that of mTORC1. In this study, we show that NOP14, a 40S ribosome biogenesis factor and a target of the mTORC1-S6K axis, plays an essential role in mTORC2 signaling. Knockdown of NOP14 led to mTORC2 inactivation and Akt destabilization. Conversely, overexpression of NOP14 stimulated mTORC2-Akt activation and enhanced cell proliferation. Fractionation and coimmunoprecipitation assays demonstrated that the mTORC2 complex was recruited to the rough endoplasmic reticulum through association with endoplasmic reticulum-bound ribosomes. In vivo, high levels of NOP14 correlated with poor prognosis in multiple cancer types. Notably, cancer cells with NOP14 high expression exhibit increased sensitivity to mTOR inhibitors, because the feedback activation of the PI3K-PDK1-Akt axis by mTORC1 inhibition was compensated by mTORC2 inhibition partly through NOP14 downregulation. In conclusion, our findings reveal a spatial regulation of mTORC2-Akt signaling and identify ribosome biogenesis as a potential biomarker for assessing rapalog response in cancer therapy.
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Affiliation(s)
- Xiao Yan
- Department of Experimental Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China; School of Medicine, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, China
| | - Bo-Hua Kuang
- Department of Experimental Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China; Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shengsuo Ma
- Department of Experimental Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Ruihua Wang
- Department of Experimental Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Jinzhong Lin
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China; Shanghai Institute of Infectious Disease and Biosecurity, Fudan University, Shanghai, China; Zhangjiang mRNA Innovation and Translation Center, Fudan University, Shanghai, China
| | - Yi-Xin Zeng
- Department of Experimental Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xiaoduo Xie
- School of Medicine, Shenzhen Campus of Sun Yat-sen University, Sun Yat-sen University, Shenzhen, China.
| | - Lin Feng
- Department of Experimental Research, State Key Laboratory of Oncology in South China, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, China.
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Lee HW, Choi JH, Seo D, Gavaachimed L, Choi J, Park S, Min NY, Lee DH, Bang HW, Ham SW, Kim JW, Lee SC, Rhee S, Seo SB, Lee KH. EGCG-induced selective death of cancer cells through autophagy-dependent regulation of the p62-mediated antioxidant survival pathway. Biochim Biophys Acta Mol Cell Res 2024; 1871:119659. [PMID: 38216089 DOI: 10.1016/j.bbamcr.2024.119659] [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: 09/19/2023] [Revised: 11/22/2023] [Accepted: 12/29/2023] [Indexed: 01/14/2024]
Abstract
The effects of EGCG on the selective death of cancer cells by modulating antioxidant pathways through autophagy were explored in various normal and cancer cells. EGCG positively regulated the p62-KEAP1-NRF2-HO-1 pathway in normal cells, while negatively regulating it in cancer cells, leading to selective apoptotic death of cancer cells. In EGCG-treated MRC5 cells (EGCG-MRC5), autophagic flux was blocked, which was accompanied by the formation of p62-positive aggregates. However, EGCG-treated HeLa cells (EGCG-HeLa) showed incomplete autophagic flux and no aggregate formation. The levels of P-ULK1 S556 and S758 increased in EGCG-MRC5 through AMPK-mTOR cooperative interaction. In contrast, EGCG treatment in HeLa cells led to AMPK-induced mTOR inactivation, resulting in abrogation of P-ULK1 S556 and S758 levels. AMPK knockout in EGCG-HeLa restored positive regulation of the p62-mediated pathway, which was accompanied by increased P-mTOR S2448 and P-ULK1 S758 levels. Knockdown of 67LR in EGCG-HeLa abolished AMPK activity but did not restore the p62-mediated pathway. Surprisingly, both AMPK knockout and 67LR knockdown in EGCG-HeLa markedly increased cell viability, despite differential regulation of the antioxidant enzyme HO-1. In conclusion, EGCG induces the selective death of cancer cells through the modulation of at least two autophagy-dependent and independent regulatory pathways: negative regulation involves the mTOR-ULK1 (S556 and S758)-p62-KEAP1-NRF2-HO-1 axis via AMPK activation, whereas positive regulation occurs through the 67LR-AMPK axis.
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Affiliation(s)
- Ho Woon Lee
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul, Republic of Korea
| | - Jee-Hye Choi
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul, Republic of Korea
| | - Dongbeom Seo
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul, Republic of Korea
| | - Lkhagvasuren Gavaachimed
- Department of Science of Cultural Properties, Graduate School, Chung-Ang University, Seoul, Republic of Korea
| | - Jaesung Choi
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul, Republic of Korea
| | - Sehwan Park
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul, Republic of Korea
| | - Na Young Min
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul, Republic of Korea
| | - Dong Ho Lee
- Da Vinci College of General Education, Chung-Ang University, Seoul, Republic of Korea
| | - Hyo-Weon Bang
- Department of Physiology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea
| | - Seung Wook Ham
- Department of Chemistry, College of Natural Sciences, Chung-Ang University, Seoul, Republic of Korea
| | - Jung-Woong Kim
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul, Republic of Korea
| | - Sung Chul Lee
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul, Republic of Korea
| | - Sangmyung Rhee
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul, Republic of Korea
| | - Sang-Beom Seo
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul, Republic of Korea
| | - Kwang-Ho Lee
- Department of Life Science, College of Natural Sciences, Chung-Ang University, Seoul, Republic of Korea; Department of Science of Cultural Properties, Graduate School, Chung-Ang University, Seoul, Republic of Korea.
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Jia L, Tian H, Sun S, Hao X, Wen Y. EID3 inhibits the osteogenic differentiation of periodontal ligament stem cells and mediates the signal transduction of TAZ-EID3-AKT/MTOR/ERK. Biochim Biophys Acta Mol Cell Res 2024; 1871:119662. [PMID: 38216090 DOI: 10.1016/j.bbamcr.2024.119662] [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: 06/05/2023] [Revised: 12/16/2023] [Accepted: 01/03/2024] [Indexed: 01/14/2024]
Abstract
Exploring the molecular mechanisms of cell behaviors is beneficial for promoting periodontal ligament stem cell (PDLSC)-mediated tissue regeneration. This study intends to explore the regulatory effects of EID3 on cell proliferation, apoptosis, and osteogenic differentiation and to preliminarily explore the regulatory mechanism of EID3. Here, EID3 was overexpressed or knocked down in PDLSCs by recombinant lentivirus. Then, cell proliferation activity was analyzed by colony-forming assay, EdU assay, and cell cycle assay. Cell apoptosis was detected by flow cytometry. The osteo-differentiation potential was analyzed using ALP activity assay, ALP staining, alizarin red staining, and mRNA and protein assay of osteo-differentiation related genes. The results showed that when EID3 was knocked down, the proliferation activity and osteogenic differentiation potential of PDLSCs decreased, while they increased when EID3 was overexpressed. The cell apoptosis rate decreased in PDLSCs with EID3 knockdown but increased in PDLSCs with EID3 overexpression. Moreover, EID3 inhibited the transduction of the AKT/MTOR and ERK signaling pathway. In addition, TAZ negatively regulated the expression of EID3, and the overexpression of EID3 partially reversed the promotive effects of TAZ on the osteogenic differentiation of PDLSCs. Taken together, EID3 inhibits the proliferation and osteogenic differentiation while promoting the apoptosis of PDLSCs. EID3 inhibits the transduction of the AKT/MTOR and ERK signaling pathways and mediates the regulatory effect of TAZ on PDLSC osteogenic differentiation.
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Affiliation(s)
- Linglu Jia
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Shandong, China; Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration, Shandong, China; Shandong Provincial Clinical Research Center for Oral Diseases, Shandong, China
| | - Hui Tian
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Shandong, China; Department of Stomatology, Rizhao People's Hospital, Rizhao, Shandong, China
| | - Shaoqing Sun
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Shandong, China; Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration, Shandong, China; Shandong Provincial Clinical Research Center for Oral Diseases, Shandong, China
| | - Xingyao Hao
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Shandong, China; Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration, Shandong, China; Shandong Provincial Clinical Research Center for Oral Diseases, Shandong, China
| | - Yong Wen
- School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Shandong, China; Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration, Shandong, China; Shandong Provincial Clinical Research Center for Oral Diseases, Shandong, China.
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Cen Y, Yang J, Su L, Wang F, Zhu D, Zhao L, Li Y. Manganese induces neuronal apoptosis by activating mTOR signaling pathway in vitro and in vivo. Food Chem Toxicol 2024; 185:114508. [PMID: 38336017 DOI: 10.1016/j.fct.2024.114508] [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: 12/13/2023] [Revised: 01/31/2024] [Accepted: 02/06/2024] [Indexed: 02/12/2024]
Abstract
Manganese (Mn) is a well-known environmental pollutant and occupational toxicant that causes neurotoxicity, which present as neurodegenerative-like symptoms. However, the mechanism of Mn-induced neuronal injury remains unclear. In this research, we explored the mechanism of Mn-induced neurotoxicity, focusing on the mTOR signaling pathway. A plasmid expressing a short hairpin RNA (shRNA) targeting mTOR (shRNA-mTOR) was transfected into N27 cells in vitro, and rapamycin was used as an mTOR inhibitor in vivo to block the mTOR signaling pathway. Cells were treated with different concentrations of manganese (II) chloride (MnCl2). We found that Mn induced cell injury and apoptosis and markedly upregulated the expression of mTOR pathway-related proteins. The phosphorylation of 4E-BP1, S6K1, Akt and SGK1 was markedly decreased after blocking mTOR, and cell apoptosis was also reduced. Furthermore, the mTOR-specific inhibitor rapamycin restored learning and memory abilities in vivo. This research highlights that inhibiting mTOR might be useful for preventing Mn-induced neurodegenerative-like disorders.
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Affiliation(s)
- Yuyan Cen
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, PR China; Key Laboratory of Maternal & Child Health and Exposure Science of Guizhou Higher Education Institutes, Zunyi, Guizhou, 563000, PR China
| | - Jianmin Yang
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, PR China
| | - Liyu Su
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, PR China
| | - Feng Wang
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, PR China
| | - Deyu Zhu
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, PR China
| | - Lan Zhao
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, PR China
| | - Yan Li
- School of Public Health, Zunyi Medical University, Zunyi, Guizhou, 563000, PR China; Key Laboratory of Maternal & Child Health and Exposure Science of Guizhou Higher Education Institutes, Zunyi, Guizhou, 563000, PR China.
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Shah RB, Mehra R. Renal Cell Carcinoma Associated With TSC/MTOR Genomic Alterations: An Update on its Expanding Spectrum and an Approach to Clinicopathologic Work-up. Adv Anat Pathol 2024; 31:105-117. [PMID: 37899532 DOI: 10.1097/pap.0000000000000419] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Renal cell carcinoma (RCC) with tuberous sclerosis complex (TSC)/mammalian target of rapamycin (MTOR) pathway-related genomic alterations have been classically described in hereditary TSC syndrome setting involving germline mutations, whereby cells with a bi-allelic inactivation of genes originate tumors in a classic tumor-suppressor "two-hit" Knudson paradigm. Initial studies of TSC-associated RCC categorized tumors into 3 broad heterogeneous morphologic groups: RCC with smooth muscle stroma, chromophobe-like, and eosinophilic-macrocytic. Recently, a similar morphologic spectrum has been increasingly recognized in novel and emerging entities characterized by somatic mutations in the TSC1/2 and MTOR in patients who do not suffer from the TSC. Correct recognition of RCC with TSC / MTOR mutations is critical for accurate prognostication because such tumors with aggressive behavior have the potential to be tailored to mTOR inhibitors. Whether TSC/MTOR mutated renal epithelial neoplasms represent a distinct molecular class has been confounded by the fact that TSC1/2 , and the gene encoding the downstream protein MTOR, are mutated secondarily in ∼5% of the more common subtypes of RCC, including the commonest subtype of clear cell RCC. This review summarizes the expanding morphologic spectrum of renal tumors with TSC/mTOR pathway alterations, specifically for sporadically occurring tumors where these genomic alterations likely are primary pathologic events. Finally, a practical surgical pathology approach to handling these tumors, and a conceptual framework of renal epithelial tumors with TSC/MTOR mutations as a "family of tumors", is presented.
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Affiliation(s)
- Rajal B Shah
- Department of Pathology, The University of Texas Southwestern Medical Center, Dallas, TX
| | - Rohit Mehra
- Department of Pathology and Michigan Center for Translational Pathology, University of Michigan School of Medicine, Ann Arbor, MI
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Ou X, Tan Y, Xie J, Yuan J, Deng X, Shao R, Song C, Cao X, Xie X, He R, Li Y, Tang H. Methylation of GPRC5A promotes liver metastasis and docetaxel resistance through activating mTOR signaling pathway in triple negative breast cancer. Drug Resist Updat 2024; 73:101063. [PMID: 38335844 DOI: 10.1016/j.drup.2024.101063] [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: 11/09/2023] [Revised: 01/20/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
AIMS This study aims to explore the function and mechanism of G Protein-coupled receptor class C group 5 member A (GPRC5A) in docetaxel-resistance and liver metastasis of breast cancer. METHODS Single-cell RNA transcriptomic analysis and bioinformatic analysis are used to screen relevant genes in breast cancer metastatic hepatic specimens. MeRIP, dual-luciferase analysis and bioinformation were used to detect m6A modulation. Mass spectrometry (MS), co-inmunoprecipitation (co-IP) and immunofluorescence colocalization were executed to explore the mechanism of GPRC5A in breast cancer cells. RESULT GPRC5A was upregulated in triple-negative breast cancer (TNBC) and was associated with a poor prognosis. In vitro and in vivo experiments demonstrated that knockdown of GPRC5A alleviated metastasis and resistance to docetaxel in TNBC. Overexpression of GPRC5A had the opposite effects. The m6A methylation of GPRC5A mRNA was modulated by METTL3 and YTHDF1, which facilitates its translation. GPRC5A inhibited the ubiquitination-dependent degradation of LAMTOR1, resulting in the recruitment of mTORC1 to lysosomes and activating the mTORC1/p70s6k signaling pathway. CONCLUSION METTL3/YTHDF1 axis up-regulates GPRC5A expression by m6A methylation. GPRC5A activates mTORC1/p70s6k signaling pathway by recruiting mTORC1 to lysosomes, consequently promotes docetaxel-resistance and liver metastasis.
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Affiliation(s)
- Xueqi Ou
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Yeru Tan
- The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Jindong Xie
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Jingping Yuan
- Department of Pathology, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Xinpei Deng
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Ruonan Shao
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Cailu Song
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Xi Cao
- The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China
| | - Xiaoming Xie
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - Rongfang He
- The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Yuehua Li
- The First Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421001, China.
| | - Hailin Tang
- State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou 510060, China.
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Shi L, Wang X, Guo S, Gou H, Shang H, Jiang X, Wei C, Wang J, Li C, Wang L, Zhao Z, Yu W, Yu J. TMEM65 promotes gastric tumorigenesis by targeting YWHAZ to activate PI3K-Akt-mTOR pathway and is a therapeutic target. Oncogene 2024; 43:931-943. [PMID: 38341472 PMCID: PMC10959749 DOI: 10.1038/s41388-024-02959-9] [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: 03/13/2023] [Revised: 01/07/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024]
Abstract
Copy number alterations are crucial for the development of gastric cancer (GC). Here, we identified Transmembrane Protein 65 (TMEM65) amplification by genomic hybridization microarray to profile copy-number variations in GC. TMEM65 mRNA level was significantly up-regulated in GC compared to adjacent normal tissues, and was positively associated with TMEM65 amplification. High TMEM65 expression or DNA copy number predicts poor prognosis (P < 0.05) in GC. Furtherly, GC patients with TMEM65 amplification (n = 129) or overexpression (n = 78) significantly associated with shortened survival. Ectopic expression of TMEM65 significantly promoted cell proliferation, cell cycle progression and cell migration/invasion ability, but inhibited apoptosis (all P < 0.05). Conversely, silencing of TMEM65 in GC cells showed opposite abilities on cell function in vitro and suppressed tumor growth and lung metastasis in vivo (all P < 0.01). Moreover, TMEM65 depletion by VNP-encapsulated TMEM65-siRNA significantly suppressed tumor growth in subcutaneous xenograft model. Mechanistically, TMEM65 exerted oncogenic effects through activating PI3K-Akt-mTOR signaling pathway, as evidenced of increased expression of key regulators (p-Akt, p-GSK-3β, p-mTOR) by Western blot. YWHAZ (Tyrosine 3-Monooxygenase/Tryptophan 5-Monooxygenase) was identified as a direct downstream effector of TMEM65. Direct binding of TMEM65 with YWHAZ in the cytoplasm inhibited ubiquitin-mediated degradation of YWHAZ. Moreover, oncogenic effect of TMEM65 was partly dependent on YWHAZ. In conclusion, TMEM65 promotes gastric tumorigenesis by activating PI3K-Akt-mTOR signaling via cooperating with YWHAZ. TMEM65 overexpression may serve as an independent new biomarker and is a therapeutic target in GC.
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Affiliation(s)
- Lingxue Shi
- Departments of Endoscopy Center, The First Hospital of Hebei Medical University, Shijiazhuang, China
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
- The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xiaohong Wang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
- Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital and Institute, Beijing, China
| | - Shang Guo
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
- The First Hospital of Hebei Medical University, Shijiazhuang, China
- Gastrointestinal Disease Centre, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Hongyan Gou
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Haiyun Shang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Xiaojia Jiang
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Chunxian Wei
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Jia Wang
- The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Chao Li
- Departments of Endoscopy Center, The First Hospital of Hebei Medical University, Shijiazhuang, China
- The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Lihong Wang
- The First Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zengren Zhao
- The First Hospital of Hebei Medical University, Shijiazhuang, China.
- Gastrointestinal Disease Centre, Hebei Key Laboratory of Colorectal Cancer Precision Diagnosis and Treatment, The First Hospital of Hebei Medical University, Shijiazhuang, China.
| | - Weifang Yu
- Departments of Endoscopy Center, The First Hospital of Hebei Medical University, Shijiazhuang, China.
- The First Hospital of Hebei Medical University, Shijiazhuang, China.
| | - Jun Yu
- Institute of Digestive Disease and Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, Chinese University of Hong Kong-Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China.
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Aleksandrova KV, Vorobev ML, Suvorova II. mTOR pathway occupies a central role in the emergence of latent cancer cells. Cell Death Dis 2024; 15:176. [PMID: 38418814 PMCID: PMC10902345 DOI: 10.1038/s41419-024-06547-3] [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: 11/11/2023] [Revised: 01/18/2024] [Accepted: 02/07/2024] [Indexed: 03/02/2024]
Abstract
The current focus in oncology research is the translational control of cancer cells as a major mechanism of cellular plasticity. Recent evidence has prompted a reevaluation of the role of the mTOR pathway in cancer development leading to new conclusions. The mechanistic mTOR inhibition is well known to be a tool for generating quiescent stem cells and cancer cells. In response to mTOR suppression, quiescent cancer cells dynamically change their proteome, triggering alternative non-canonical translation mechanisms. The shift to selective translation may have clinical relevance, since quiescent tumor cells can acquire new phenotypical features. This review provides new insights into the patterns of mTOR functioning in quiescent cancer cells, enhancing our current understanding of the biology of latent metastasis.
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Affiliation(s)
| | - Mikhail L Vorobev
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russian Federation
| | - Irina I Suvorova
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russian Federation.
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Ji R, Zhang Z, Yang Z, Chen X, Yin T, Yang J. BOP1 contributes to the activation of autophagy in polycystic ovary syndrome via nucleolar stress response. Cell Mol Life Sci 2024; 81:101. [PMID: 38409361 PMCID: PMC10896891 DOI: 10.1007/s00018-023-05091-1] [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: 10/13/2023] [Revised: 12/04/2023] [Accepted: 12/13/2023] [Indexed: 02/28/2024]
Abstract
Abnormal autophagy is one of the vital features in polycystic ovary syndrome (PCOS). However, the underlying molecular mechanisms remain unelucidated. In this study, we aimed to investigate whether Block of Proliferation 1 (BOP1) is involved in the onset of autophagy activation of granulosa cells in PCOS. Firstly, we found that BOP1 expression was significantly down-regulated in the ovaries of PCOS mice, which was associated with the development of PCOS. Next, local injection of lentiviral vectors in the ovary for the overexpression of BOP1 significantly alleviated the phenotypes of elevated androgens, disturbed estrous cycle, and abnormal follicular development in PCOS mice. Subsequently, we found that knockdown of BOP1 activated autophagy of granulosa cells in the in vitro experiments, whereas overexpression of BOP1 inhibited autophagy in both in vivo and in vitro models. Mechanistically, BOP1 knockdown triggered the nucleolus stress response, which caused RPL11 to be released from the nucleolus into the nucleoplasm and inhibited the E3 ubiquitination ligase of MDM2, thereby enhancing the stability of p53. Subsequently, P53 inhibited mTOR, thereby activating autophagy in granulosa cells. In addition, the mRNA level of BOP1 was negatively correlated with antral follicle count (AFC), body-mass index (BMI), serum androgen levels, and anti-Mullerian hormone (AMH) in patients with PCOS. In summary, our study demonstrates that BOP1 downregulation inhibits mTOR phosphorylation through activation of the p53-dependent nucleolus stress response, which subsequently contributes to aberrant autophagy in granulosa cells, revealing that BOP1 may be a key target for probing the mechanisms of PCOS.
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Affiliation(s)
- Rui Ji
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Clinic Research Center for Assisted Reproductive Technology and Embryonic Development, Wuhan, China
| | - Zhimo Zhang
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Clinic Research Center for Assisted Reproductive Technology and Embryonic Development, Wuhan, China
| | - Zhe Yang
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Clinic Research Center for Assisted Reproductive Technology and Embryonic Development, Wuhan, China
| | - Xin Chen
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China
- Hubei Clinic Research Center for Assisted Reproductive Technology and Embryonic Development, Wuhan, China
| | - Tailang Yin
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China.
- Hubei Clinic Research Center for Assisted Reproductive Technology and Embryonic Development, Wuhan, China.
| | - Jing Yang
- Reproductive Medical Center, Renmin Hospital of Wuhan University, Wuhan, China.
- Hubei Clinic Research Center for Assisted Reproductive Technology and Embryonic Development, Wuhan, China.
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45
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Tao S, Jiang H, Zhou HY. [Effect of Bushen Huoxue() recipe on autophagy of ovariectomized rat chondrocytes based on Akt/mTOR signaling pathway]. Zhongguo Gu Shang 2024; 37:196-206. [PMID: 38425073 DOI: 10.12200/j.issn.1003-0034.20220321] [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] [Indexed: 03/02/2024]
Abstract
OBJECTIVE To investigate whether Bushen Huoxue recipe can protect articular cartilage by regulating Akt/mTOR signaling pathway to promote the autophagy of chondrocytes in ovariectomized rats. METHODS Among 30 SPF 12-week-old female SD rats weighing (247.0±7.0) g, 6 were randomly selected as the blank control group, and the remaining rats were randomly divided into model group, BSHXR-L group, BSHXR-M group and BSHXR-H group, with 6 rats in each group. The protective effect of Bushen Huoxue recipe on articular cartilage injury in rats was determined by visual observation score, muscovine O-solid green staining and immunohistochemistry. The expression of autophagy related proteins was detected by Western-blot, and the relative expression of Akt, mTOR and downstream autophagy genes was detected by qPCR. RESULTS After modeling, BSHXR (L, M, H) groups could alleviate the histological damage of cartilage. Immunohistochemistry showed that the expression of Collagen-Ⅱand Aggrecan gradually increased, and the expression of MMP-13 gradually decreased, and the differences between BSHXR-M and BSHXR-H groups and model group were statistically significant (P<0.05). The results of Western-blot showed that the autophagy pathway proteins p-Akt/Akt and p-mTOR/mTOR were inhibited in the BSHXR(L, M, H) groups, and the expressions of downstream proteins Beclin-1 and LC3Ⅱwere gradually increased, while p62 was gradually decreased, showing a dose effect. QPCR results showed that BSHXR(L, M, H) groups could promote the relative expression of Beclin-1 and LC3ⅡmRNA, and inhibit the relative expression of p62, Akt, mTOR mRNA, and the differences were statistically significant compared with model group (P<0.05). CONCLUSION Bushen Huoxue recipe can enhance the cartilage autophagy response by inhibiting the Akt/mTOR signaling pathway, and then protect the cartilage.
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Affiliation(s)
- Shuai Tao
- Taizhou Hospital of TCM Affiliated to Nanjing University of Chinese Medicine, Taizhou 225300, Jiangsu, China
| | - Hong Jiang
- Suzhou Hospital of TCM Affiliated to Nanjing University of Chinese Medicine, Suzhou 215009, Jiangsu, China
| | - Hai-Yan Zhou
- Hanlin College of Nanjing Univerisity of Chinese Medicine, Taizhou 225300, Jiangsu, China
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Jiang T, Ma X, Liu H, Jia Q, Chen J, Ding Y, Sun M, Zhu H. SNAT2-mediated regulation of estrogen and progesterone in the proliferation of goat mammary epithelial cells. Amino Acids 2024; 56:17. [PMID: 38393495 PMCID: PMC10891196 DOI: 10.1007/s00726-024-03382-w] [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: 06/27/2023] [Accepted: 01/17/2024] [Indexed: 02/25/2024]
Abstract
The development of the goat mammary gland is mainly under the control of ovarian hormones particularly estrogen and progesterone (P4). Amino acids play an essential role in mammary gland development and milk production, and sodium-coupled neutral amino acid transporter 2 (SNAT2) was reported to be expressed in the mammary gland of rats and bovine mammary epithelial cells, which may affect the synthesis of milk proteins or mammary cell proliferation by mediating prolactin, 17β-estradiol (E2) or methionine function. However, whether SNAT2 mediates the regulatory effects of E2 and P4 on the development of the ruminant mammary gland is still unclear. In this study, we show that E2 and P4 could increase the proliferation of goat mammary epithelial cells (GMECs) and regulate SNAT2 mRNA and protein expression in a dose-dependent manner. Further investigation revealed that SNAT2 is abundantly expressed in the mammary gland during late pregnancy and early lactation, while knockdown and overexpression of SNAT2 in GMECs could inhibit or enhance E2- and P4-induced cell proliferation as well as mammalian target of rapamycin (mTOR) signaling. We also found that the accelerated proliferation induced by SNAT2 overexpression in GMECs was suppressed by the mTOR signaling pathway inhibitor rapamycin. This indicates that the regulation of GMECs proliferation mediated by SNAT2 in response to E2 and P4 is dependent on the mTOR signaling pathway. Finally, we found that the total content of the amino acids in GMECs changed after knocking-down and overexpressing SNAT2. In summary, the results demonstrate that the regulatory effects of E2 and P4 on GMECs proliferation may be mediated by the SNAT2-transported amino acid pathway. These results may offer a novel nutritional target for improving the development of the ruminant mammary gland and milk production.
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Affiliation(s)
- Tingting Jiang
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiaoyue Ma
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Hanling Liu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Qianqian Jia
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jianguo Chen
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yi Ding
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ming Sun
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China
| | - Hongmei Zhu
- College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, China.
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Rezaei M, Ghasemi M, Saravani M, Ghahghayi F, Shahraki-Ghadim H, Salimi S. The possible effects of the MTOR polymorphisms on preeclampsia susceptibility, severity, and onset: a case-control study and in silico analysis. Mol Biol Rep 2024; 51:335. [PMID: 38393518 DOI: 10.1007/s11033-023-09190-x] [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: 11/12/2023] [Accepted: 12/21/2023] [Indexed: 02/25/2024]
Abstract
BACKGROUND Preeclampsia (PE) is a gestational complication with developed hypertension and proteinuria. Evidence showed the role of mTOR in various cellular processes. Therefore, this study aimed to evaluate the effects of MTOR polymorphisms on susceptibility, severity, and onset of Preeclampsia (PE). METHODS AND RESULTS A total of 250 PE pregnant women and 258 age-matched control subjects were recruited in this study. To genotype MTOR polymorphisms, the PCR-RFLP method was used. The SpliceAid 2 and PROMO tools were used for in silico analysis. The maternal MTOR rs17036508T/C polymorphism was associated with PE risk in various genetic models. There was no relationship between rs2536T/C and rs2295080T/G polymorphisms and PE. The TTC and TGC haplotypes of rs2536/ rs2295080/ rs17036508 polymorphisms were significantly higher in PE women. Subgroup analysis revealed the association between the MTOR rs2295080 variant and an increased risk of Early-onset PE (EOPE). However, the MTOR rs17036508 was associated with a higher risk of EOPE and Late- Onset PE. In addition, the MTOR rs2295080 could increase the risk of severe PE. The results of the in silico analysis showed that rs17036508 disrupted several binding motifs in the mutant sequence. The PROMO database revealed that the T to C substitution leads to the loss of the TFII-I binding site in the mutant allele. CONCLUSION The MTOR rs17036508T/C polymorphism was associated with PE risk. There was an association between the MTOR rs2295080 variant and an increased risk of EOPE. The MTOR rs17036508T/C and rs2295080T/C variants could disrupt several binding motifs and TFII-I binding respectively.
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Affiliation(s)
- Mahnaz Rezaei
- Cellular and Molecular Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Marzieh Ghasemi
- Department of Obstetrics and Gynecology, Pregnancy Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
- Pregnancy Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Mohsen Saravani
- Cellular and Molecular Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Fatemeh Ghahghayi
- Department of Obstetrics and Gynecology, Pregnancy Health Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Hossein Shahraki-Ghadim
- Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Saeedeh Salimi
- Cellular and Molecular Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran.
- Department of Clinical Biochemistry, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Huang TQ, Chen YX, Zeng SL, Lin Y, Li F, Jiang ZM, Liu EH. Bergenin Alleviates Ulcerative Colitis By Decreasing Gut Commensal Bacteroides vulgatus-Mediated Elevated Branched-Chain Amino Acids. J Agric Food Chem 2024; 72:3606-3621. [PMID: 38324392 DOI: 10.1021/acs.jafc.3c09448] [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] [Indexed: 02/09/2024]
Abstract
Ulcerative colitis is closely associated with the dysregulation of gut microbiota. There is growing evidence that natural products may improve ulcerative colitis by regulating the gut microbiota. In this research, we demonstrated that bergenin, a naturally occurring isocoumarin, significantly ameliorates colitis symptoms in dextran sulfate sodium (DSS)-induced mice. Transcriptomic analysis and Caco-2 cell assays revealed that bergenin could ameliorate ulcerative colitis by inhibiting TLR4 and regulating NF-κB and mTOR phosphorylation. 16S rRNA sequencing and metabolomics analyses revealed that bergenin could improve gut microbiota dysbiosis by decreasing branched-chain amino acid (BCAA) levels. BCAA intervention mediated the mTOR/p70S6K signaling pathway to exacerbate the symptoms of ulcerative colitis in mice. Notably, bergenin greatly decreased the symbiotic bacteria Bacteroides vulgatus (B. vulgatus), and the gavage of B. vulgatus increased BCAA concentrations and aggravated the symptoms of ulcerative colitis in mice. Our findings suggest that gut microbiota-mediated BCAA metabolism plays a vital role in the protective effect of bergenin on ulcerative colitis, providing novel insights for ulcerative colitis prevention through manipulation of the gut microbiota.
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Affiliation(s)
- Tian-Qing Huang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Yu-Xin Chen
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Su-Ling Zeng
- Institute of Health and Medicine, Hefei Comprehensive National Science Center, Hefei 230601, China
| | - Yang Lin
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Fei Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
| | - Zheng-Meng Jiang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
- College of Pharmacy, Nanjing University of Chinese Medicine, No. 138 Xianlin Road, Nanjing 210023, China
| | - E-Hu Liu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, No. 24 Tongjia Lane, Nanjing 210009, China
- College of Pharmacy, Nanjing University of Chinese Medicine, No. 138 Xianlin Road, Nanjing 210023, China
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Hochstoeger T, Papasaikas P, Piskadlo E, Chao JA. Distinct roles of LARP1 and 4EBP1/2 in regulating translation and stability of 5'TOP mRNAs. Sci Adv 2024; 10:eadi7830. [PMID: 38363833 PMCID: PMC10871529 DOI: 10.1126/sciadv.adi7830] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Accepted: 01/16/2024] [Indexed: 02/18/2024]
Abstract
A central mechanism of mTOR complex 1 (mTORC1) signaling is the coordinated translation of ribosomal protein and translation factor mRNAs mediated by the 5'-terminal oligopyrimidine motif (5'TOP). Recently, La-related protein 1 (LARP1) was proposed to be the specific regulator of 5'TOP mRNA translation downstream of mTORC1, while eIF4E-binding proteins (4EBP1/2) were suggested to have a general role in translational repression of all transcripts. Here, we use single-molecule translation site imaging of 5'TOP and canonical mRNAs to study the translation of single mRNAs in living cells. Our data reveal that 4EBP1/2 has a dominant role in repression of translation of both 5'TOP and canonical mRNAs during pharmacological inhibition of mTOR. In contrast, we find that LARP1 selectively protects 5'TOP mRNAs from degradation in a transcriptome-wide analysis of mRNA half-lives. Our results clarify the roles of 4EBP1/2 and LARP1 in regulating 5'TOP mRNAs and provide a framework to further study how these factors control cell growth during development and disease.
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Affiliation(s)
- Tobias Hochstoeger
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland
- University of Basel, 4003 Basel, Switzerland
| | | | - Ewa Piskadlo
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland
| | - Jeffrey A. Chao
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland
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Wang Y, Hu Y, Xu R, Jin X, Jiao W. Plin2 inhibits autophagy via activating AKT/mTOR pathway in non-small cell lung cancer. Exp Cell Res 2024; 435:113955. [PMID: 38301990 DOI: 10.1016/j.yexcr.2024.113955] [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: 06/19/2023] [Revised: 01/13/2024] [Accepted: 01/25/2024] [Indexed: 02/03/2024]
Abstract
Perilipin 2 (Plin2) is known to be dysregulated in several human malignancies, which facilitates cancer progression. Recent studies have found that the abnormal expression of Plin2 is associated with poor prognosis of non-small cell lung cancer (NSCLC). However, the specific role of Plin2 and its underlying mechanism remain unclear. This study revealed that Plin2 expression was low in NSCLC tissues, and its relatively higher expression indicated larger tumor size and poorer prognosis. In vitro experiments proved that Plin2 promoted NSCLC cellular proliferation and inhibited autophagy by activating the AKT/mTOR pathway. Meanwhile, treatment with the AKT phosphorylation promoter or inhibitor neutralized the influence of Plin2 depletion or over-expression on proliferation and autophagy, respectively. In vivo study showed that Plin2 stimulated subcutaneous tumorigenesis of NSCLC cells in nude mice. Collectively, this study clarified the carcinogenic role of Plin2 and its molecular mechanism in NSCLC progression, which may facilitate a targeted therapy in the future.
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Affiliation(s)
- Yawei Wang
- Department of Thoracic Surgery, The Affiliated Hospital of Qingdao University, No.16 of Jiangsu Road, Qingdao, 266000, China
| | - Ye Hu
- Department of Nephrology, Qingdao Eighth People's Hospital, No.84 of Fengshan Road, Qingdao, 266121, China
| | - Rongjian Xu
- Department of Thoracic Surgery, The Affiliated Hospital of Qingdao University, No.16 of Jiangsu Road, Qingdao, 266000, China
| | - Xiangfeng Jin
- Department of Thoracic Surgery, The Affiliated Hospital of Qingdao University, No.16 of Jiangsu Road, Qingdao, 266000, China
| | - Wenjie Jiao
- Department of Thoracic Surgery, The Affiliated Hospital of Qingdao University, No.16 of Jiangsu Road, Qingdao, 266000, China.
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