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Wang R, Zeng Y, Chen Z, Ma D, Zhang X, Wu G, Fan W. Shear-Sensitive circRNA-LONP2 Promotes Endothelial Inflammation and Atherosclerosis by Targeting NRF2/HO1 Signaling. JACC Basic Transl Sci 2024; 9:652-670. [PMID: 38984054 PMCID: PMC11228119 DOI: 10.1016/j.jacbts.2024.02.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 02/28/2024] [Accepted: 02/29/2024] [Indexed: 07/11/2024]
Abstract
Hemodynamic shear stress is a frictional force that acts on vascular endothelial cells and is essential for endothelial homeostasis. Physiological laminar shear stress (LSS) suppresses endothelial inflammation and protects arteries from atherosclerosis. Herein, we screened differentially expressed circular RNAs (circRNAs) that were significantly altered in LSS-stimulated endothelial cells and found that circRNA-LONP2 was involved in modulating the flow-dependent inflammatory response. Furthermore, endothelial circRNA-LONP2 overexpression promoted endothelial inflammation and atherosclerosis in vitro and in vivo. Mechanistically, circRNA-LONP2 competitively sponged miR-200a-3p and subsequently promoted Kelch-like ECH-associated protein 1, Yes-associated protein 1, and enhancer of zeste homolog 2 expression, thereby inactivating nuclear factor erythroid 2-related factor 2/heme oxygenase-1 signaling, promoting oxidative stress and endothelial inflammation, and accelerating atherosclerosis. LSS-induced down-regulation of circRNA-LONP2 suppresses endothelial inflammation, at least in part, by activating the miR-200a-3p-mediated nuclear factor erythroid 2-related factor 2/heme oxygenase-1 signaling pathway. CircRNA-LONP2 may serve as a new therapeutic target for atherosclerosis.
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Affiliation(s)
- Ruoyu Wang
- Department of Cardiology, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, People's Republic of China
- NHC Key Laboratory of Assisted Circulation and Vascular Diseases (Sun Yat-sen University)
| | - Yue Zeng
- Department of Cardiology, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, People's Republic of China
- NHC Key Laboratory of Assisted Circulation and Vascular Diseases (Sun Yat-sen University)
| | - Ziqi Chen
- Department of Cardiology, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, People's Republic of China
- NHC Key Laboratory of Assisted Circulation and Vascular Diseases (Sun Yat-sen University)
| | - Dongwei Ma
- Department of Cardiology, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, People's Republic of China
- NHC Key Laboratory of Assisted Circulation and Vascular Diseases (Sun Yat-sen University)
| | - Xiaozhe Zhang
- Department of Cardiology, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, People's Republic of China
- NHC Key Laboratory of Assisted Circulation and Vascular Diseases (Sun Yat-sen University)
| | - Guifu Wu
- Department of Cardiology, the Eighth Affiliated Hospital of Sun Yat-sen University, Shenzhen, Guangdong, People's Republic of China
- NHC Key Laboratory of Assisted Circulation and Vascular Diseases (Sun Yat-sen University)
- Guangdong Innovative Engineering and Technology Research Center for Assisted Circulation, Shenzhen, Guangdong, People's Republic of China
| | - Wendong Fan
- NHC Key Laboratory of Assisted Circulation and Vascular Diseases (Sun Yat-sen University)
- Department of Cardiology, the First Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, People's Republic of China
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Gujral J, Kidd BA, Becker C, Golden E, Lee HC, Kim-Schulze S, Yau M, Dudley J, Rapaport R. Acute Effects of Growth Hormone on the Cellular Immunologic Landscape in Pediatric Patients. Cureus 2024; 16:e57383. [PMID: 38566781 PMCID: PMC10984134 DOI: 10.7759/cureus.57383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2024] [Indexed: 04/04/2024] Open
Abstract
INTRODUCTION Growth hormone (GH) and the immune system have multiple bidirectional interactions. Data about the acute effects of GH on the immune system are lacking. The objective of our study was to evaluate the acute effects of GH on the immune system using time-of-flight mass cytometry. METHODS This was a prospective study of pediatric patients who were being evaluated for short stature and underwent a GH stimulation test at a tertiary care center. Blood samples for immunologic markers, i.e., complete blood count (CBC) and time of flight mass cytometry (CyTOF), were collected at baseline (T0) and over the course of three hours (T3) of the test. Differences in immune profiling in patients by timepoint (T0, T3) and GH response (growth hormone sufficient (GHS) versus growth hormone deficient (GHD)) were calculated using a two-way ANOVA test. Results: A total of 54 patients (39 boys and 15 girls) aged five to 18 years were recruited. Twenty-two participants tested GHD (peak GH <10 ng/ml). The CyTOF analysis showed a significant increase from T0 to T3 in granulocyte percentage, monocyte count, and dendritic cell (DC) count; in contrast, a significant decrease was seen in T lymphocytes (helper and cytotoxic) and IgD+ B lymphocytes. The CBC analysis supported these findings: an increase in total white blood cell count, absolute neutrophil count, and neutrophil percentage; a decrease in absolute lymphocyte count, lymphocyte percentage, absolute eosinophil count, and absolute monocyte count. No significant differences were found between CBC/CyTOF measurements and GH status at either time. CONCLUSIONS This study provides the first high-resolution map of acute changes in the immune system with GH stimulation. This implies a key role for GH in immunomodulatory function.
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Affiliation(s)
- Jasmine Gujral
- Pediatric Endocrinology, Yale School of Medicine, New Haven, USA
| | - Brian A Kidd
- Genetics, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Christine Becker
- Genetics, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Eddye Golden
- Genetics, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Hao-Chih Lee
- Genetics, Icahn School of Medicine at Mount Sinai, New York City, USA
| | - Seunghee Kim-Schulze
- Immunology and Immunotherapy, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Mabel Yau
- Pediatric Endocrinology, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Joel Dudley
- Genetics, Icahn School of Medicine at Mount Sinai, New York, USA
| | - Robert Rapaport
- Pediatric Endocrinology, Icahn School of Medicine at Mount Sinai, New York, USA
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Chen X, Liao B, Ren T, Liao Z, Huang Z, Lin Y, Zhong S, Li J, Wen S, Li Y, Lin X, Du X, Yang Y, Guo J, Zhu X, Lin H, Liu R, Wang J. Adjuvant activity of cordycepin, a natural derivative of adenosine from Cordyceps militaris, on an inactivated rabies vaccine in an animal model. Heliyon 2024; 10:e24612. [PMID: 38293396 PMCID: PMC10826310 DOI: 10.1016/j.heliyon.2024.e24612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 01/10/2024] [Accepted: 01/11/2024] [Indexed: 02/01/2024] Open
Abstract
Vaccination is the most feasible way of preventing rabies, an ancient zoonosis that remains a major public health concern globally. However, administration of inactivated rabies vaccination without adjuvants is always inefficient and necessitates four to five injections. In the current study, we explored the adjuvant characteristics of cordycepin, a major bioactive component of Cordyceps militaris, to boost immune responses against a commercially available rabies vaccine. We found that cordycepin could stimulate stronger phenotypic and functional maturation of dendritic cells (DCs). For animal experiments, mice were immunized 3 times with rabies vaccine in the presence or absence of cordycepin at 1-week interval. Analysis of T cell differentiation and serum antibody isotypes showed that humoral immunity was dominant with a Th2 biased immune response. These results were also supported by the raised ratio of follicular helper T cells (TFH) and germinal center B cells (GCB). Thus, titer of rabies virus neutralizing antibody (RVNAb) and rabies virus-specific memory B cells were both raised as a result. Furthermore, administration of cordycepin did not cause pathological phenomena or body weight loss. The findings indicate that cordycepin could be used as a promising adjuvant for rabies vaccines to get a higher range of protection without any side effects.
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Affiliation(s)
- Xin Chen
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, 518118, China
| | - Boyu Liao
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, 518118, China
| | - Tianci Ren
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Zhipeng Liao
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Zijie Huang
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Yujuan Lin
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Shouhao Zhong
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Jiaying Li
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Shun Wen
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Yingyan Li
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Xiaohan Lin
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Xingchen Du
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Yuhui Yang
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, 518118, China
| | - Jiubiao Guo
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Xiaohui Zhu
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
| | - Haishu Lin
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, 518118, China
| | - Rui Liu
- Laboratory of Molecular Immunology, State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Jingbo Wang
- College of Pharmacy, Shenzhen Technology University, Shenzhen, 518118, China
- School of Pharmaceutical Sciences, Health Science Center, Shenzhen University, Shenzhen, 518118, China
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Xu K, Ma J, Hall SRR, Peng RW, Yang H, Yao F. Battles against aberrant KEAP1-NRF2 signaling in lung cancer: intertwined metabolic and immune networks. Theranostics 2023; 13:704-723. [PMID: 36632216 PMCID: PMC9830441 DOI: 10.7150/thno.80184] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/14/2022] [Indexed: 01/06/2023] Open
Abstract
The Kelch-like ECH-associated protein 1/nuclear factor erythroid-derived 2-like 2 (KEAP1/NRF2) pathway is well recognized as a key regulator of redox homeostasis, protecting cells from oxidative stress and xenobiotics under physiological circumstances. Cancer cells often hijack this pathway during initiation and progression, with aberrant KEAP1-NRF2 activity predominantly observed in non-small cell lung cancer (NSCLC), suggesting that cell/tissue-of-origin is likely to influence the genetic selection during malignant transformation. Hyperactivation of NRF2 confers a multi-faceted role, and recently, increasing evidence shows that a close interplay between metabolic reprogramming and tumor immunity remodelling contributes to its aggressiveness, treatment resistance (radio-/chemo-/immune-therapy) and susceptibility to metastases. Here, we discuss in detail the special metabolic and immune fitness enabled by KEAP1-NRF2 aberration in NSCLC. Furthermore, we summarize the similarities and differences in the dysregulated KEAP1-NRF2 pathway between two major histo-subtypes of NSCLC, provide mechanistic insights on the poor response to immunotherapy despite their high immunogenicity, and outline evolving strategies to treat this recalcitrant cancer subset. Finally, we integrate bioinformatic analysis of publicly available datasets to illustrate the new partners/effectors in NRF2-addicted cancer cells, which may provide new insights into context-directed treatment.
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Affiliation(s)
- Ke Xu
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, People's Republic of China
| | - Jie Ma
- Department of Thoracic Surgery, Anhui Chest Hospital, Hefei, 230000, China
| | - Sean R. R. Hall
- Wyss Institute for Biologically Inspired Engineering, Harvard University; Boston, MA 02115, USA
| | - Ren-Wang Peng
- Division of General Thoracic Surgery, Department of BioMedical Research (DBMR), Inselspital, Bern University Hospital, University of Bern; Bern, 3010, Switzerland
| | - Haitang Yang
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, People's Republic of China.,✉ Corresponding author: Haitang Yang (, +86 18217015189), Feng Yao (, +86 13636354837), Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University. West Huaihai 241, 200030, Shanghai, People's Republic of China
| | - Feng Yao
- Department of Thoracic Surgery, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, 200030, People's Republic of China
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Kryszczuk M, Kowalczuk O. Significance of NRF2 in physiological and pathological conditions an comprehensive review. Arch Biochem Biophys 2022; 730:109417. [DOI: 10.1016/j.abb.2022.109417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/22/2022] [Accepted: 09/24/2022] [Indexed: 11/30/2022]
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Lei Y, Junxin C, Yongcan H, Xiaoguang L, Binsheng Y. Role of microRNAs in the crosstalk between osteosarcoma cells and the tumour microenvironment. J Bone Oncol 2020; 25:100322. [PMID: 33083216 PMCID: PMC7554654 DOI: 10.1016/j.jbo.2020.100322] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/22/2020] [Accepted: 09/23/2020] [Indexed: 12/16/2022] Open
Abstract
Osteosarcoma (OS) is the most common primary bone tumour, with a peak incidence in adolescents, and the five-year survival rate of patients with metastasis or recurrence is much lower than that of patients without metastasis and recurrence. OS is initiated and develops in a complex tumour microenvironment (TME) that contains many different components, such as osteoblasts, osteoclasts, mesenchymal stem cells, fibroblasts, immune cells, extracellular matrix (ECM), extracellular vesicles, and cytokines. The extensive interaction between OS and the TME underlies OS progression. Therefore, rather than targeting OS cells, targeting the key factors in the TME may yield novel therapeutic approaches. MicroRNAs (miRNAs) play multiple roles in the biological behaviours of OS, and recent studies have implied that miRNAs are involved in mediating the communication between OS cells and the surrounding TME. Here, we review the TME landscape and the miRNA dysregulation of OS, describe the role of the altered TME in OS development and highlight the role of miRNA in the crosstalk between OS cells and the TME.
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Affiliation(s)
- Yong Lei
- Shenzhen Key Laboratory of Spine Surgery, Department of Spine Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Shenzhen Engineering Laboratory of Orthopaedic Regenerative Technologies, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Chen Junxin
- Shenzhen Key Laboratory of Spine Surgery, Department of Spine Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Shenzhen Engineering Laboratory of Orthopaedic Regenerative Technologies, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Huang Yongcan
- Shenzhen Key Laboratory of Spine Surgery, Department of Spine Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
- Shenzhen Engineering Laboratory of Orthopaedic Regenerative Technologies, National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Peking University Shenzhen Hospital, Shenzhen 518036, China
| | - Liu Xiaoguang
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China
| | - Yu Binsheng
- Shenzhen Key Laboratory of Spine Surgery, Department of Spine Surgery, Peking University Shenzhen Hospital, Shenzhen 518036, China
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Wei J, Hao Q, Chen C, Li J, Han X, Lei Z, Wang T, Wang Y, You X, Chen X, Li H, Ding Y, Huang W, Hu Y, Lin S, Shen H, Lin Y. Epigenetic repression of miR-17 contributed to di(2-ethylhexyl) phthalate-triggered insulin resistance by targeting Keap1-Nrf2/miR-200a axis in skeletal muscle. Am J Cancer Res 2020; 10:9230-9248. [PMID: 32802189 PMCID: PMC7415800 DOI: 10.7150/thno.45253] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 07/13/2020] [Indexed: 12/15/2022] Open
Abstract
Rationale: Skeletal muscle insulin resistance is detectable before type 2 diabetes is diagnosed. Exposure to di(2-ethylhexyl) phthalate (DEHP), a typical environmental endocrine-disrupting chemical, is a novel risk factor for insulin resistance and type 2 diabetes. This study aimed to explore insulin signaling regulatory pathway in skeletal muscle of the DEHP-induced insulin-resistant mice and to investigate potential therapeutic strategies for treating insulin resistance. Methods: C57BL/6J male mice were exposed to 2 mg/kg/day DEHP for 15 weeks. Whole-body glucose homeostasis, oxidative stress and deregulated miRNA-mediated molecular transduction in skeletal muscle were examined. microRNA (miRNA) interventions based on lentiviruses and adeno-associated viruses 9 (AAV9) were performed. Results: Dnmt3a-dependent promoter methylation and lncRNA Malat1-related sponge functions cooperatively downregulated miR-17 in DEHP-exposed skeletal muscle cells. DEHP suppressed miR-17 to disrupt the Keap1-Nrf2 redox system and to activate oxidative stress-responsive Txnip in skeletal muscle. Oxidative stress upregulated miR-200a, which directly targets the 3'UTR of Insr and Irs1, leading to hindered insulin signaling and impaired insulin-dependent glucose uptake in skeletal muscle, ultimately promoting the development of insulin resistance. AAV9-induced overexpression of miR-17 and lentivirus-mediated silencing of miR-200a in skeletal muscle ameliorated whole-body insulin resistance in DEHP-exposed mice. Conclusions: The miR-17/Keap1-Nrf2/miR-200a axis contributed to DEHP-induced insulin resistance. miR-17 is a positive regulator, whereas miR-200a is a negative regulator of insulin signaling in skeletal muscle, and both miRNAs have the potential to become therapeutic targets for preventing and treating insulin resistance or type 2 diabetes.
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The Role of Nrf2 Activity in Cancer Development and Progression. Cancers (Basel) 2019; 11:cancers11111755. [PMID: 31717324 PMCID: PMC6896028 DOI: 10.3390/cancers11111755] [Citation(s) in RCA: 158] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/03/2019] [Accepted: 11/05/2019] [Indexed: 12/15/2022] Open
Abstract
Nrf2 is a transcription factor that stimulates the expression of genes which have antioxidant response element-like sequences in their promoter. Nrf2 is a cellular protector, and this principle applies to both normal cells and malignant cells. While healthy cells are protected from DNA damage induced by reactive oxygen species, malignant cells are defended against chemo- or radiotherapy. Through our literature search, we found that Nrf2 activates several oncogenes unrelated to the antioxidant activity, such as Matrix metallopeptidase 9 (MMP-9), B-cell lymphoma 2 (BCL-2), B-cell lymphoma-extra large (BCL-xL), Tumour Necrosis Factor α (TNF-α), and Vascular endothelial growth factor A (VEGF-A). We also did a brief analysis of The Cancer Genome Atlas (TCGA) data of lung adenocarcinoma concerning the effects of radiation therapy and found that the therapy-induced Nrf2 activation is not universal. For instance, in the case of recurrent disease and radiotherapy, we observed that, for the majority of Nrf2-targeted genes, there is no change in expression level. This proves that the universal, axiomatic rationale that Nrf2 is activated as a response to chemo- and radiation therapy is wrong, and that each scenario should be carefully evaluated with the help of Nrf2-targeted genes. Moreover, there were nine genes involved in lipid peroxidation, which showed underexpression in the case of new radiation therapy: ADH1A, ALDH3A1, ALDH3A2, ADH1B, GPX2, ADH1C, ALDH6A1, AKR1C3, and NQO1. This may relate to the fact that, while some studies reported the co-activation of Nrf2 and other oncogenic signaling pathways such as Phosphoinositide 3-kinases (PI3K), mitogen-activated protein kinase (MAPK), and Notch1, other reported the inverse correlation between Nrf2 and the tumor-promoter Transcription Factor (TF), Nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB). Lastly, Nrf2 establishes its activity through interactions at multiple levels with various microRNAs. MiR-155, miR-144, miR-28, miR-365-1, miR-93, miR-153, miR-27a, miR-142, miR-29-b1, miR-340, and miR-34a, either through direct repression of Nrf2 messenger RNA (mRNA) in a Kelch-like ECH-associated protein 1 (Keap1)-independent manner or by enhancing the Keap1 cellular level, inhibit the Nrf2 activity. Keap1–Nrf2 interaction leads to the repression of miR-181c, which is involved in the Nuclear factor kappa light chain enhancer of activated B cells (NF-κB) signaling pathway. Nrf2’s role in cancer prevention, diagnosis, prognosis, and therapy is still in its infancy, and the future strategic planning of Nrf2-based oncological approaches should also consider the complex interaction between Nrf2 and its various activators and inhibitors.
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Emerging Screening Approaches in the Development of Nrf2-Keap1 Protein-Protein Interaction Inhibitors. Int J Mol Sci 2019; 20:ijms20184445. [PMID: 31509940 PMCID: PMC6770765 DOI: 10.3390/ijms20184445] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/04/2019] [Accepted: 09/04/2019] [Indexed: 12/11/2022] Open
Abstract
Due to role of the Keap1–Nrf2 protein–protein interaction (PPI) in protecting cells from oxidative stress, the development of small molecule inhibitors that inhibit this interaction has arisen as a viable approach to combat maladies caused by oxidative stress, such as cancers, neurodegenerative disease and diabetes. To obtain specific and genuine Keap1–Nrf2 inhibitors, many efforts have been made towards developing new screening approaches. However, there is no inhibitor for this target entering the clinic for the treatment of human diseases. New strategies to identify novel bioactive compounds from large molecular databases and accelerate the developmental process of the clinical application of Keap1–Nrf2 protein–protein interaction inhibitors are greatly needed. In this review, we have summarized virtual screening and other methods for discovering new lead compounds against the Keap1–Nrf2 protein–protein interaction. We also discuss the advantages and limitations of different strategies, and the potential of this PPI as a drug target in disease therapy.
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Hardeland R. Aging, Melatonin, and the Pro- and Anti-Inflammatory Networks. Int J Mol Sci 2019; 20:ijms20051223. [PMID: 30862067 PMCID: PMC6429360 DOI: 10.3390/ijms20051223] [Citation(s) in RCA: 181] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/05/2019] [Accepted: 03/07/2019] [Indexed: 12/17/2022] Open
Abstract
Aging and various age-related diseases are associated with reductions in melatonin secretion, proinflammatory changes in the immune system, a deteriorating circadian system, and reductions in sirtuin-1 (SIRT1) activity. In non-tumor cells, several effects of melatonin are abolished by inhibiting SIRT1, indicating mediation by SIRT1. Melatonin is, in addition to its circadian and antioxidant roles, an immune stimulatory agent. However, it can act as either a pro- or anti-inflammatory regulator in a context-dependent way. Melatonin can stimulate the release of proinflammatory cytokines and other mediators, but also, under different conditions, it can suppress inflammation-promoting processes such as NO release, activation of cyclooxygenase-2, inflammasome NLRP3, gasdermin D, toll-like receptor-4 and mTOR signaling, and cytokine release by SASP (senescence-associated secretory phenotype), and amyloid-β toxicity. It also activates processes in an anti-inflammatory network, in which SIRT1 activation, upregulation of Nrf2 and downregulation of NF-κB, and release of the anti-inflammatory cytokines IL-4 and IL-10 are involved. A perhaps crucial action may be the promotion of macrophage or microglia polarization in favor of the anti-inflammatory phenotype M2. In addition, many factors of the pro- and anti-inflammatory networks are subject to regulation by microRNAs that either target mRNAs of the respective factors or upregulate them by targeting mRNAs of their inhibitor proteins.
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Affiliation(s)
- Rüdiger Hardeland
- Johann Friedrich Blumenbach Institute of Zoology and Anthropology, University of Göttingen, 37073 Göttingen, Germany.
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Additive antitumor effect of arsenic trioxide combined with intravesical bacillus Calmette–Guerin immunotherapy against bladder cancer through blockade of the IER3/Nrf2 pathway. Biomed Pharmacother 2018; 107:1093-1103. [DOI: 10.1016/j.biopha.2018.08.057] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 07/31/2018] [Accepted: 08/15/2018] [Indexed: 01/08/2023] Open
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Xu N, Yang W, Liu Y, Yan F, Yu Z. MicroRNA-411 promoted the osteosarcoma progression by suppressing MTSS1 expression. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:12064-12071. [PMID: 29453719 DOI: 10.1007/s11356-018-1331-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Accepted: 01/18/2018] [Indexed: 06/08/2023]
Abstract
MicroRNAs (miRNAs) play crucial roles in the progression of different tumors. In our study, we investigated the expression and roles of miR-411 in human osteosarcoma. In this study, we first confirmed that the miR-411 expression was higher in the serum of patients with osteosarcoma than in the serum of healthy volunteers. In addition, we found that the miR-411 expression was upregulated in the osteosarcoma tissues compared to that in the matched normal bone tissues. We also demonstrated that the miR-411 expression was upregulated in the four osteosarcoma cell lines. Elevated expression of miR-411 promoted osteosarcoma cell proliferation and migration. Moreover, we identified that metastasis suppressor protein 1 (MTSS1) was a direct target gene of miR-411 in the osteosarcoma cell. We also demonstrated that the MTSS1 expression was downregulated in the osteosarcoma tissues compared to that in the matched normal bone tissues. In addition, MTSS1 expression level was inversely correlated with miR-411 expression in the osteosarcoma tissues. Furthermore, elevated expression of miR-411 enhanced the osteosarcoma cell proliferation and migration through inhibiting the MTSS1 expression. These data suggested that miR-411 played as oncogene in the osteosarcoma partly by inhibiting the MTSS1 expression.
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Affiliation(s)
- Ning Xu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, No. 23, Youzheng St, Nangang, Harbin, Heilongjiang, China
| | - Weiliang Yang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, No. 23, Youzheng St, Nangang, Harbin, Heilongjiang, China
| | - Yang Liu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, No. 23, Youzheng St, Nangang, Harbin, Heilongjiang, China
| | - Feng Yan
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, No. 23, Youzheng St, Nangang, Harbin, Heilongjiang, China
| | - Zhange Yu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Harbin Medical University, No. 23, Youzheng St, Nangang, Harbin, Heilongjiang, China.
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Kumar Kingsley SM, Vishnu Bhat B. Role of MicroRNAs in the development and function of innate immune cells. Int Rev Immunol 2017; 36:154-175. [DOI: 10.1080/08830185.2017.1284212] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- S. Manoj Kumar Kingsley
- Department of Neonatology, Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India
| | - B. Vishnu Bhat
- Department of Neonatology, Jawaharlal Institute of Post Graduate Medical Education and Research (JIPMER), Puducherry, India
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Growth hormone biases amygdala network activation after fear learning. Transl Psychiatry 2016; 6:e960. [PMID: 27898076 PMCID: PMC5290350 DOI: 10.1038/tp.2016.203] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 07/07/2016] [Accepted: 07/18/2016] [Indexed: 01/27/2023] Open
Abstract
Prolonged stress exposure is a risk factor for developing posttraumatic stress disorder, a disorder characterized by the 'over-encoding' of a traumatic experience. A potential mechanism by which this occurs is through upregulation of growth hormone (GH) in the amygdala. Here we test the hypotheses that GH promotes the over-encoding of fearful memories by increasing the number of neurons activated during memory encoding and biasing the allocation of neuronal activation, one aspect of the process by which neurons compete to encode memories, to favor neurons that have stronger inputs. Viral overexpression of GH in the amygdala increased the number of amygdala cells activated by fear memory formation. GH-overexpressing cells were especially biased to express the immediate early gene c-Fos after fear conditioning, revealing strong autocrine actions of GH in the amygdala. In addition, we observed dramatically enhanced dendritic spine density in GH-overexpressing neurons. These data elucidate a previously unrecognized autocrine role for GH in the regulation of amygdala neuron function and identify specific mechanisms by which chronic stress, by enhancing GH in the amygdala, may predispose an individual to excessive fear memory formation.
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Devesa J, Almengló C, Devesa P. Multiple Effects of Growth Hormone in the Body: Is it Really the Hormone for Growth? Clin Med Insights Endocrinol Diabetes 2016; 9:47-71. [PMID: 27773998 PMCID: PMC5063841 DOI: 10.4137/cmed.s38201] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 09/12/2016] [Accepted: 09/19/2016] [Indexed: 12/17/2022] Open
Abstract
In this review, we analyze the effects of growth hormone on a number of tissues and organs and its putative role in the longitudinal growth of an organism. We conclude that the hormone plays a very important role in maintaining the homogeneity of tissues and organs during the normal development of the human body or after an injury. Its effects on growth do not seem to take place during the fetal period or during the early infancy and are mediated by insulin-like growth factor I (IGF-I) during childhood and puberty. In turn, IGF-I transcription is dependent on an adequate GH secretion, and in many tissues, it occurs independent of GH. We propose that GH may be a prohormone, rather than a hormone, since in many tissues and organs, it is proteolytically cleaved in a tissue-specific manner giving origin to shorter GH forms whose activity is still unknown.
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Affiliation(s)
- Jesús Devesa
- Scientific Direction, Medical Center Foltra, Teo, Spain
| | | | - Pablo Devesa
- Research and Development, Medical Center Foltra, 15886-Teo, Spain
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