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Xiao G, Wei Y, Xie R, Tsang Y, Gu J, Shen D, Ding M, Yuan J, Xu D, Fei J. Citric acid promotes SPARC release in pancreatic cancer cells and inhibits the progression of pancreatic tumors in mice on a high-fat diet. FEBS J 2024; 291:1699-1718. [PMID: 38245817 DOI: 10.1111/febs.17058] [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: 06/20/2023] [Revised: 10/17/2023] [Accepted: 01/08/2024] [Indexed: 01/22/2024]
Abstract
Over the years, pancreatic cancer has experienced a global surge in incidence and mortality rates, largely attributed to the influence of obesity and diabetes mellitus on disease initiation and progression. In this study, we investigated the pathogenesis of pancreatic cancer in mice subjected to a high-fat diet (HFD) and observed an increase in citric acid expenditure. Notably, citrate treatment demonstrates significant efficacy in promoting tumor cell apoptosis, suppressing cell proliferation, and inhibiting tumor growth in vivo. Our investigations revealed that citrate achieved these effects by releasing secreted protein acidic and rich in cysteine (SPARC) proteins, repolarizing M2 macrophages into M1 macrophages, and facilitating tumor cell apoptosis. Overall, our research highlights the critical role of citric acid as a pivotal metabolite in the intricate relationship between obesity and pancreatic cancer. Furthermore, we uncovered the significant metabolic and immune checkpoint function of SPARC in pancreatic cancer, suggesting its potential as both a biomarker and therapeutic target in treating this patient population.
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Affiliation(s)
- Guohui Xiao
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Yan Wei
- Department of Dermatology, The First Affiliated Hospital of Xi'an Jiaotong University, China
| | - Rongli Xie
- Department of General Surgery, Ruijin Hospital Luwan Branch, Shanghai Jiao Tong University School of Medicine, China
| | - Yiusing Tsang
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Jianhua Gu
- Department of Thyroid and Breast Surgery, Punan Branch of Renji Hospital, Shanghai Jiaotong University School of Medicine, China
| | - Dongjie Shen
- Department of General Surgery, Ruijin Hospital Luwan Branch, Shanghai Jiao Tong University School of Medicine, China
| | - Min Ding
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Jianming Yuan
- Department of General Surgery, Ruijin Hospital Luwan Branch, Shanghai Jiao Tong University School of Medicine, China
| | - Dan Xu
- Department of Emergency Medicine, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, China
| | - Jian Fei
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, China
- State Key Laboratory of Oncogenes and Related Genes (Shanghai), China
- Institute of Translational Medicine, Shanghai Jiao Tong University, China
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2
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Lapcik P, Stacey RG, Potesil D, Kulhanek P, Foster LJ, Bouchal P. Global Interactome Mapping Reveals Pro-tumorigenic Interactions of NF-κB in Breast Cancer. Mol Cell Proteomics 2024; 23:100744. [PMID: 38417630 PMCID: PMC10988130 DOI: 10.1016/j.mcpro.2024.100744] [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: 07/21/2023] [Revised: 02/01/2024] [Accepted: 02/23/2024] [Indexed: 03/01/2024] Open
Abstract
NF-κB pathway is involved in inflammation; however, recent data shows its role also in cancer development and progression, including metastasis. To understand the role of NF-κB interactome dynamics in cancer, we study the complexity of breast cancer interactome in luminal A breast cancer model and its rearrangement associated with NF-κB modulation. Liquid chromatography-mass spectrometry measurement of 160 size-exclusion chromatography fractions identifies 5460 protein groups. Seven thousand five hundred sixty eight interactions among these proteins have been reconstructed by PrInCE algorithm, of which 2564 have been validated in independent datasets. NF-κB modulation leads to rearrangement of protein complexes involved in NF-κB signaling and immune response, cell cycle regulation, and DNA replication. Central NF-κB transcription regulator RELA co-elutes with interactors of NF-κB activator PRMT5, and these complexes are confirmed by AlphaPulldown prediction. A complementary immunoprecipitation experiment recapitulates RELA interactions with other NF-κB factors, associating NF-κB inhibition with lower binding of NF-κB activators to RELA. This study describes a network of pro-tumorigenic protein interactions and their rearrangement upon NF-κB inhibition with potential therapeutic implications in tumors with high NF-κB activity.
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Affiliation(s)
- Petr Lapcik
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - R Greg Stacey
- Michael Smith Laboratories, University of British Columbia, Vancouver, Canada
| | - David Potesil
- Proteomics Core Facility, Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Petr Kulhanek
- National Centre for Biomolecular Research, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Leonard J Foster
- Michael Smith Laboratories, University of British Columbia, Vancouver, Canada; Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, Canada
| | - Pavel Bouchal
- Department of Biochemistry, Faculty of Science, Masaryk University, Brno, Czech Republic.
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Ponta S, Bonato A, Neidenbach P, Bruhin VF, Laurent A, Applegate LA, Zenobi-Wong M, Barreto G. Streamlined, single-step non-viral CRISPR-Cas9 knockout strategy enhances gene editing efficiency in primary human chondrocyte populations. Arthritis Res Ther 2024; 26:66. [PMID: 38468277 PMCID: PMC10926593 DOI: 10.1186/s13075-024-03294-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: 01/05/2024] [Accepted: 02/26/2024] [Indexed: 03/13/2024] Open
Abstract
BACKGROUND CRISPR-Cas9-based genome engineering represents a powerful therapeutic tool for cartilage tissue engineering and for understanding molecular pathways driving cartilage diseases. However, primary chondrocytes are difficult to transfect and rapidly dedifferentiate during monolayer (2D) cell culture, making the lengthy expansion of a single-cell-derived edited clonal population not feasible. For this reason, functional genetics studies focused on cartilage and rheumatic diseases have long been carried out in cellular models that poorly recapitulate the native molecular properties of human cartilaginous tissue (e.g., cell lines, induced pluripotent stem cells). Here, we set out to develop a non-viral CRISPR-Cas9, bulk-gene editing method suitable for chondrocyte populations from different cartilaginous sources. METHODS We screened electroporation and lipid nanoparticles for ribonucleoprotein (RNP) delivery in primary polydactyly chondrocytes, and optimized RNP reagents assembly. We knocked out RELA (also known as p65), a subunit of the nuclear factor kappa B (NF-κB), in polydactyly chondrocytes and further characterized knockout (KO) cells with RT-qPCR and Western Blot. We tested RELA KO in chondrocytes from diverse cartilaginous sources and characterized their phenotype with RT-qPCR. We examined the chondrogenic potential of wild-type (WT) and KO cell pellets in presence and absence of interleukin-1β (IL-1β). RESULTS We established electroporation as the optimal transfection technique for chondrocytes enhancing transfection and editing efficiency, while preserving high cell viability. We knocked out RELA with an unprecedented efficiency of ~90%, confirming lower inflammatory pathways activation upon IL-1β stimulation compared to unedited cells. Our protocol could be easily transferred to primary human chondrocytes harvested from osteoarthritis (OA) patients, human FE002 chondroprogenitor cells, bovine chondrocytes, and a human chondrocyte cell line, achieving comparable mean RELA KO editing levels using the same protocol. All KO pellets from primary human chondrocytes retained chondrogenic ability equivalent to WT cells, and additionally displayed enhanced matrix retention under inflamed conditions. CONCLUSIONS We showcased the applicability of our bulk gene editing method to develop effective autologous and allogeneic off-the-shelf gene therapies strategies and to enable functional genetics studies in human chondrocytes to unravel molecular mechanisms of cartilage diseases.
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Affiliation(s)
- Simone Ponta
- Department of Health Sciences and Technology, ETH Zürich, Zurich, 8093, Switzerland
| | - Angela Bonato
- Department of Health Sciences and Technology, ETH Zürich, Zurich, 8093, Switzerland
| | - Philipp Neidenbach
- Schulthess Clinic, Department of Lower Extremity Orthopaedics, Musculoskeletal Centre, Zurich, 8008, Switzerland
| | - Valentino F Bruhin
- Schulthess Clinic, Department of Lower Extremity Orthopaedics, Musculoskeletal Centre, Zurich, 8008, Switzerland
| | - Alexis Laurent
- Regenerative Therapy Unit, Plastic, Reconstructive & Hand Surgery Service, Lausanne University Hospital, University of Lausanne, Epalinges, 1066, Switzerland
| | - Lee Ann Applegate
- Regenerative Therapy Unit, Plastic, Reconstructive & Hand Surgery Service, Lausanne University Hospital, University of Lausanne, Epalinges, 1066, Switzerland
| | - Marcy Zenobi-Wong
- Department of Health Sciences and Technology, ETH Zürich, Zurich, 8093, Switzerland
| | - Goncalo Barreto
- Clinicum, Faculty of Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, 00014, Finland.
- Medical Ultrasonics Laboratory (MEDUSA), Department of Neuroscience and Biomedical Engineering, Aalto University, Espoo, 02150, Finland.
- Orton Orthopedic Hospital, Tenholantie 10, Helsinki, 00280, Finland.
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Zhou Y, Sun YW, Liu XY, Shen DH. Misdiagnosis of synovial sarcoma - cellular myofibroma with SRF-RELA gene fusion: A case report. World J Clin Cases 2024; 12:1326-1332. [PMID: 38524524 PMCID: PMC10955539 DOI: 10.12998/wjcc.v12.i7.1326] [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] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2023] [Revised: 01/06/2024] [Accepted: 01/25/2024] [Indexed: 02/29/2024] Open
Abstract
BACKGROUND Cellular myofibroma is a rare subtype of myofibroma that was first described in 2017. Its diagnosis is often challenging because of its relative rarity, lack of known genetic abnormalities, and expression of muscle markers that can be confused with sarcomas that have myogenic differentiation. Currently, scholars have limited knowledge of this disease, and published cases are few. Further accumulation of diagnostic and treatment experiences is required. CASE SUMMARY A 16-year-old girl experienced left upper limb swelling for 3 years. She sought medical attention at a local hospital 10 months ago, where magnetic resonance imaging revealed a 5-cm soft tissue mass. Needle biopsy performed at a local hospital resulted in the diagnosis of a spindle cell soft tissue sarcoma. The patient was referred to our hospital for limb salvage surgery with endoprosthetic replacement. She was initially diagnosed with a synovial sarcoma. Consequently, clinical management with chemotherapy was continued for the malignant sarcoma. Our pathology department also performed fluorescence in situ hybridization for result validation, which returned negative for SS18 gene breaks, indicating that it was not a synovial sarcoma. Next-generation sequencing was used to identify the SRF-RELA rearrangement. The final pathological diagnosis was a cellular/myofibroblastic neoplasm with an SRF-RELA gene fusion. The patient had initially received two courses of chemotherapy; however, chemotherapy was discontinued after the final diagnosis. CONCLUSION This case was misdiagnosed because of its rare occurrence, benign biological behavior, and pathological similarity to soft tissue sarcoma.
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Affiliation(s)
- Ying Zhou
- Department of Pathology, Peking University People’s Hospital, Beijing 100044, China
| | - Yi-Wen Sun
- Department of Pathology, Peking University People’s Hospital, Beijing 100044, China
| | - Xiao-Yang Liu
- Department of Pathology, Peking University People’s Hospital, Beijing 100044, China
| | - Dan-Hua Shen
- Department of Pathology, Peking University People’s Hospital, Beijing 100044, China
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5
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Wu J, Wang W, Zheng Y, Deng W, Liu J. Transcription factor RELA promotes hepatocellular carcinoma progression by promoting the transcription of m6A modulator METTL3. Pathol Res Pract 2024; 255:155168. [PMID: 38367599 DOI: 10.1016/j.prp.2024.155168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 01/16/2024] [Accepted: 01/23/2024] [Indexed: 02/19/2024]
Abstract
OBJECTIVE To explore the biological function of RELA proto-oncogene, NF-kB subunit (RELA) in hepatocellular carcinoma (HCC) progression, and its potential regulatory effects on the regulators of m6A modification. METHODS AND MATERIALS GEPIA, UALCAN and Human Protein Atlas databases were applied to analyze the expression characteristics of RELA in HCC tissues and non-cancer liver tissues, and its relationship with clinicopathologic indicators and prognosis. Quantitative real-time PCR (qRT-PCR) was used to examine the expression level of RELA mRNA in HCC cells. Cell counting kit-8 (CCK-8) assay, EdU assay and flow cytometry were used to examine cell growth and apoptosis. PROMO database was applied to predict the binding sequence between RELA and methyltransferase like protein 3 (METTL3) promoter region, and this prediction was verified by dual luciferase reporter gene experiment and chromatin immunoprecipitation assay. The effect of RELA on METTL3 expression was examined by Western blot and qRT-PCT, and the regulatory effects of RELA on the other m6A regulators were evaluated by qRT-PCR. RESULTS RELA was highly expressed in HCC tissues and cell lines, and was closely associated with adverse clinicopathologic indicators and poor prognosis of patients. Overexpression of RELA promoted the growth of HCC cells and inhibited apoptosis; Knocking down RELA had the opposite effects. Overexpression of RELA promoted METTL3 transcription. Knockdown or overexpression of METTL3 reversed the effects of overexpression or knockdown of RELA on HCC cell growth and apoptosis, respectively. RELA also promoted the expression of a series of m6A regulators at mRNA expression level in HCC cell lines. CONCLUSION RELA promotes the transcription of METTL3 by binding to METTL3 promoter region, thus promoting the malignancy of HCC cells. This study suggests NF-κB signaling contributes the dysregulation of m6A modification in HCC tumorigenesis.
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Affiliation(s)
- Jianguo Wu
- Department of General Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
| | - Weixing Wang
- Department of General Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China.
| | - Yongbin Zheng
- Department of General Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
| | - Wenhong Deng
- Department of General Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
| | - Jiasheng Liu
- Department of General Surgery, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China
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Sheen YS, Syu YJ, Chang YC, Hsieh PH, Liao YH, Lin MH, Chen CY, Chu CY, Chu CY. Insulin-like growth factor 2 mRNA-binding protein 3 enhanced melanoma migration through regulation of AKT1 and RELA expression. Exp Dermatol 2024; 33:e15015. [PMID: 38284203 DOI: 10.1111/exd.15015] [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: 07/19/2023] [Revised: 12/21/2023] [Accepted: 01/03/2024] [Indexed: 01/30/2024]
Abstract
IMP-3 expression is a poor prognostic factor of melanomas and it promotes melanoma cell migration and invasion by a pathway modulating HMGA2 mRNA expression. We tried to identify other putative targets of IMP-3. We identified putative IMP-3-binding RNAs, including AKT1, MAPK3, RB1 and RELA, by RNA immunoprecipitation coupled with next-generation sequencing. IMP-3 overexpression increased AKT and RELA levels in MeWo cells. siRNAs against AKT1 and RELA inhibited MeWo/Full-length IMP-3 cell migration. IMP-3 knockdown of A2058 cells decreased AKT1 and RELA expression and lowered migration ability. Co-transfection of A2058 cells with AKT1- or RELA-expressing plasmids with IMP-3 siRNA restored the inhibitory effects of IMP-3 knockdown on migration. HMGA2 did not influence AKT1 and RELA expression in melanoma cells. Human melanoma samples with high IMP-3 levels also showed high HMGA2, AKT1 and RELA expression. Our results show that IMP-3 enhances melanoma cell migration through the regulation of the AKT1 and RELA axis.
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Affiliation(s)
- Yi-Shuan Sheen
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Yan-Jie Syu
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
- Department of Life Science, College of Life Science, National Taiwan University, Taipei, Taiwan
| | - Yu-Chuan Chang
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan
| | - Ping-Han Hsieh
- Graduate Institute of Biomedical Electronics and Bioinformatics, National Taiwan University, Taipei, Taiwan
| | - Yi-Hua Liao
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ming-Hsien Lin
- Department of Surgery, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan
| | - Chien-Yu Chen
- Department of Biomechatronics Engineering, National Taiwan University, Taipei, Taiwan
| | - Chia-Yu Chu
- Department of Dermatology, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chia-Ying Chu
- Department of Life Science, College of Life Science, National Taiwan University, Taipei, Taiwan
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Xu H, Wu C, Wang D, Wang H. Alleviating effect of Nexrutine on mucosal inflammation in mice with ulcerative colitis: Involvement of the RELA suppression. Immun Inflamm Dis 2024; 12:e1147. [PMID: 38270298 PMCID: PMC10797652 DOI: 10.1002/iid3.1147] [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: 09/19/2023] [Revised: 12/27/2023] [Accepted: 12/28/2023] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND Nexrutine is an herbal extract derived from Phellodendron amurense, known for its anti-inflammatory, antidiarrheal, and hemostatic properties. However, its effect on ulcerative colitis (UC) remains unclear. METHODS A mouse model of UC was induced by 3% dextran sulfate sodium, while human colonic epithelial cells NCM-460 were exposed to lipopolysaccharide. Both models were treated with Nexrutine at 300 or 600 mg/kg, with Mesalazine applied as a positive control regimen. The disease activity index (DAI) of mice was calculated, and the pathological injury scores were assessed through hematoxylin and eosin staining. The viability of NCM-460 cells was determined using the CCK-8 method. Inflammatory cytokines were detected using ELISA kits. Expression of mucin 3 (MUC3), Claudin-1, and tight junction protein (ZO-1) was detected to analyze mucosal barrier integrity. Target genes of Nexrutine were predicted using bioinformatics tools. Expression of RELA proto-oncogene (RELA) was analyzed using qPCR and western blot assays. RESULTS The Nexrutine treatments significantly alleviated DAI of mice, mitigated pathological changes in their colon tissues, decreased the production of pro-inflammatory cytokines, enhanced the barrier integrity-related proteins, and increased NCM-460 cell viability in vitro. RELA, identified as a target gene of Nexrutine, showed elevated levels in UC models but was substantially suppressed by Nexrutine treatment. Adenovirus-mediated RELA upregulation in mice or the overexpression plasmid of RELA in cells counteracted the effects of Nexrutine treatments, exacerbating UC-related symptoms. CONCLUSION This study demonstrates that Nexrutine alleviates inflammatory mucosal barrier damage in UC by suppressing RELA transcription.
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Affiliation(s)
- Hongyun Xu
- Graduate SchoolHeilongjiang University of Chinese MedicineHarbinHeilongjiangChina
| | - Chunyu Wu
- Department of Continuing EducationFirst Affiliated Hospital of Heilongjiang University of Chinese MedicineHarbinHeilongjiangChina
| | - Danning Wang
- Graduate SchoolHeilongjiang University of Chinese MedicineHarbinHeilongjiangChina
| | - Haiqiang Wang
- Department of Liver, Spleen and StomachFirst Affiliated Hospital of Heilongjiang University of Chinese MedicineHarbinHeilongjiangChina
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He L, Yu C, Qin S, Zheng E, Liu X, Liu Y, Yu S, Liu Y, Dou X, Shang Z, Wang Y, Wang Y, Zhou X, Liu B, Zhong Y, Liu Z, Lu J, Sun L. The proteasome component PSMD14 drives myelomagenesis through a histone deubiquitinase activity. Mol Cell 2023; 83:4000-4016.e6. [PMID: 37935198 DOI: 10.1016/j.molcel.2023.10.019] [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: 05/05/2022] [Revised: 08/03/2023] [Accepted: 10/17/2023] [Indexed: 11/09/2023]
Abstract
While 19S proteasome regulatory particle (RP) inhibition is a promising new avenue for treating bortezomib-resistant myeloma, the anti-tumor impact of inhibiting 19S RP component PSMD14 could not be explained by a selective inhibition of proteasomal activity. Here, we report that PSMD14 interacts with NSD2 on chromatin, independent of 19S RP. Functionally, PSMD14 acts as a histone H2AK119 deubiquitinase, facilitating NSD2-directed H3K36 dimethylation. Integrative genomic and epigenomic analyses revealed the functional coordination of PSMD14 and NSD2 in transcriptional activation of target genes (e.g., RELA) linked to myelomagenesis. Reciprocally, RELA transactivates PSMD14, forming a PSMD14/NSD2-RELA positive feedback loop. Remarkably, PSMD14 inhibitors enhance bortezomib sensitivity and fosters anti-myeloma synergy. PSMD14 expression is elevated in myeloma and inversely correlated with overall survival. Our study uncovers an unappreciated function of PSMD14 as an epigenetic regulator and a myeloma driver, supporting the pursuit of PSMD14 as a therapeutic target to overcome the treatment limitation of myeloma.
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Affiliation(s)
- Lin He
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University Health Science Center, Beijing 100191, China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University International Cancer Institute, Peking University Health Science Center, Beijing 100191, China
| | - Chunyu Yu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Sen Qin
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University International Cancer Institute, Peking University Health Science Center, Beijing 100191, China
| | - Enrun Zheng
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University International Cancer Institute, Peking University Health Science Center, Beijing 100191, China
| | - Xinhua Liu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Yanhua Liu
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University Health Science Center, Beijing 100191, China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University International Cancer Institute, Peking University Health Science Center, Beijing 100191, China
| | - Shimiao Yu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University International Cancer Institute, Peking University Health Science Center, Beijing 100191, China
| | - Yang Liu
- Peking University Institute of Hematology, Collaborative Innovation Center of Hematology, Peking University People's Hospital, Beijing 100044, China
| | - Xuelin Dou
- Peking University Institute of Hematology, Collaborative Innovation Center of Hematology, Peking University People's Hospital, Beijing 100044, China
| | - Zesen Shang
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China
| | - Yizhou Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University International Cancer Institute, Peking University Health Science Center, Beijing 100191, China
| | - Yue Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University International Cancer Institute, Peking University Health Science Center, Beijing 100191, China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Xuehong Zhou
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University International Cancer Institute, Peking University Health Science Center, Beijing 100191, China
| | - Boning Liu
- Peking University Institute of Hematology, Collaborative Innovation Center of Hematology, Peking University People's Hospital, Beijing 100044, China
| | - Yuping Zhong
- Department of Hematology, Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao 266003, China
| | - Zhiqiang Liu
- Department of Pathophysiology, School of Basic Medical Sciences, Tianjin Medical University, Tianjin 300070, China
| | - Jin Lu
- Peking University Institute of Hematology, Collaborative Innovation Center of Hematology, Peking University People's Hospital, Beijing 100044, China
| | - Luyang Sun
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University Health Science Center, Beijing 100191, China; Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University International Cancer Institute, Peking University Health Science Center, Beijing 100191, China.
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Wang R, Li Q, Chu X, Li N, Liang H, He F. LncBIRC3-OT promotes the malignant progression of glioma by interacting with RELA to upregulate stanniocalcin-1 expression. Heliyon 2023; 9:e21777. [PMID: 38034675 PMCID: PMC10681922 DOI: 10.1016/j.heliyon.2023.e21777] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 10/20/2023] [Accepted: 10/27/2023] [Indexed: 12/02/2023] Open
Abstract
Glioma is the most common malignant intracranial tumor, accounting for 80 % of all malignant brain tumors. Growing evidence suggests that lncRNAs are involved in the growth, angiogenesis, metastasis, and therapeutic resistance in a variety of tumors, including glioma. In this study, lncBIRC3-OT (NONHSAT159592.1), which is highly expressed in glioma, was screened by RNA-seq method and verified by quantitative reverse transcription polymerase chain reaction. Subsequently, we knocked down the endogenous expression of lncBIRC3-OT in U87 and U251 cells and found that down-regulated lncBIRC3-OT inhibited cell proliferation, colony formation, migration, and invasion. Mechanically, lncBIRC3-OT could guide RELA protein to the stanniocalcin-1 (STC1) promoter, initiate STC1 transcription, and ultimately promote the progression of glioma. Together, these findings suggest that lncBIRC3-OT is an important regulator promoting glioma progression, and may be a promising therapeutic target for glioma.
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Affiliation(s)
- Renjie Wang
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
- Institute of Traumatic Brain Injury and Neurology, Characteristic Medical Center of Chinese People's Armed Police Force, Tianjin, 300162, China
| | - Qi Li
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
| | - Xiaolei Chu
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
| | - Nan Li
- Institute of Traumatic Brain Injury and Neurology, Characteristic Medical Center of Chinese People's Armed Police Force, Tianjin, 300162, China
| | - Haiqian Liang
- Institute of Traumatic Brain Injury and Neurology, Characteristic Medical Center of Chinese People's Armed Police Force, Tianjin, 300162, China
| | - Feng He
- Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300072, China
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Tiwari H, Kumar A, Barik MR, Kaur H, Mahajan S, Shukla MK, Gupta M, Yadav G, Nargotra A. Repositioning the existing drugs for neuroinflammation: a fusion of computational approach and biological validation to counter the Parkinson's disease progression. Mol Divers 2023:10.1007/s11030-023-10708-5. [PMID: 37542020 DOI: 10.1007/s11030-023-10708-5] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 07/28/2023] [Indexed: 08/06/2023]
Abstract
Parkinson's disease is caused by the deficiency of striatal dopamine and the accumulation of aggregated α-synuclein in the substantia nigra pars compacta (SNpc). Neuroinflammation associated with oxidative stress is a key factor contributing to the death of dopaminergic neurons in SNpc and advancement of Parkinson's disease. Two molecular targets, i.e., nuclear factor kappa-light-chain-enhancer (NF-kB) and α-synuclein play a substantial role in neuroinflammation progression. Therefore, the compounds targeting these neuroinflammatory targets hold a great potential to combat Parkinson's disease. Thereby, in this study, molecular docking and Connectivity Map (CMap) based gene expression profiling was utilized to reposition the approved drugs as neuroprotective agents for Parkinson's disease. With in silico screening, two drugs namely theophylline and propylthiouracil were selected for anti-neuroinflammatory activity evaluation in in vivo models of chronic neuroinflammation. The neuroinflammatory effect of the identified compounds was confirmed by quantifying the expression of three important neuroinflammatory mediators, i.e. IL-6, TNF-alpha, and IL-1 beta on brain tissue using ELISA assay. The ELISA experiment demonstrated that both compounds significantly decreased the expression of neuroinflammatory mediators, highlighting the compounds' potential in neuroinflammation management. Furthermore, the drug and disease interaction network of the two identified drugs and diseases (neuroinflammation and Parkinson's disease) suggested that the two drugs might interact with various targets namely adenosine receptors, Poly [ADP-ribose] polymerase-1, myeloperoxidase (MPO) and thyroid peroxidase through multiple pathways associated with neuroinflammation and Parkinson's disease. Computational studies suggest that a particular drug may be effective in managing Parkinson's disease associated with neuroinflammation. However, further research is needed to confirm this in biological experiments.
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Affiliation(s)
- Harshita Tiwari
- Discovery Informatics, NPMC Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Amit Kumar
- Mutagenicity Laboratory, Pharmacology Division, CSIR- Indian Institute of Integrative Medicine, Jammu, 180001, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Manas Ranjan Barik
- Discovery Informatics, NPMC Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Harjot Kaur
- Discovery Informatics, NPMC Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - Shubham Mahajan
- Discovery Informatics, NPMC Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - Monu Kumar Shukla
- PK-PD Toxicology Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - Monika Gupta
- Discovery Informatics, NPMC Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India
| | - Govind Yadav
- Mutagenicity Laboratory, Pharmacology Division, CSIR- Indian Institute of Integrative Medicine, Jammu, 180001, India
| | - Amit Nargotra
- Discovery Informatics, NPMC Division, CSIR-Indian Institute of Integrative Medicine, Jammu, India.
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11
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Guo J, Ye W, Wu X, Huang H, Li B, Sun Z, Ren Z, Yang Z. TNF-α activates RELA expression via TNFRSF1B to upregulate OPA1 expression and inhibit chondrogenic differentiation of human adipose stem cells. J Orthop Surg Res 2023; 18:430. [PMID: 37312126 DOI: 10.1186/s13018-023-03846-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] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 05/09/2023] [Indexed: 06/15/2023] Open
Abstract
BACKGROUND Tumor necrosis factor-alpha (TNF-α), one of the pro-inflammatory cytokines mediating the local inflammatory process in joints, inhibits cartilage formation and has a detrimental effect on stem cell-based cartilage regeneration for the treatment of osteoarthritis (OA). However, the mechanisms behind this inhibitory effect are still poorly understood. Mitochondrial morphological changes mediated by mitochondrial fusion and fission are highly plastic, are quite sensitive to environmental stimuli and play a crucial role in maintaining cell structure and function. In our study, chondrogenic differentiated human adipose stem cells (hADSCs) were exposed to TNF-α and the effect of TNF-α on the ability of hADSCs to chondrogenic differentiate and on mitochondrial fusion and fission was observed and analyzed. The aim was to investigate the role and mechanisms of mitochondrial fusion and fission regulation in the chondrogenic differentiation of hADSCs under normal conditions and under exposure to TNF-α. METHODS We used flow cytometry to identify hADSCs immunophenotypes CD29, CD44, CD34, CD45, and HLA-DR. Alcian blue staining and Sirius red staining were used to observe the formation of proteoglycans and collagen during the chondrogenic differentiation of hADSCs, respectively. The mRNA and protein expression levels of the cartilage formation marker SOX9, type II collagen (COL2A1), and Aggrecan were measured by real-time fluorescent quantitative PCR (RT-qPCR) and western blot, respectively. The fluorescent probes MitoTracker® Red CMXRos and JC-1 were used to visualize mitochondria morphology and detect mitochondrial membrane electricity (MMP). Affymetrix PrimeView™ chips were used for gene expression profiling. RESULTS The results showed that the chondrogenic differentiation of hADSCs was inhibited in the presence of TNF-α that optic atrophy 1 (OPA1) expression was significantly upregulated and mitochondria were prolonged and interconnected during this process. Gene microarray and RT-qPCR data showed that the presence of TNF-α led to increased expression of TNFα receptor 2 (TNFRSF1B) and RELA during chondrogenic differentiation of hADSCs. CONCLUSIONS TNF-α inhibits chondrogenic differentiation of human adipose stem cells by activating RELA expression through TNFRSF1B upregulating OPA1 expression thereby increasing mitochondrial fusion.
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Affiliation(s)
- Jiajia Guo
- Medical College of Guizhou University, Guiyang, 550025, Guizhou, China
| | - Wang Ye
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Xinglin Wu
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Haifeng Huang
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Bo Li
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Zeyu Sun
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China
| | - Zhijing Ren
- Department of Clinical Laboratory, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China.
| | - Zhen Yang
- Department of Orthopedics, Guizhou Provincial People's Hospital, Guiyang, 550002, Guizhou, China.
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12
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Kamdar RD, Harrington BS, Attar E, Korrapati S, Shetty J, Zhao Y, Tran B, Wong N, House CD, Annunziata CM. NF-κB Signaling Modulates miR-452-5p and miR-335-5p Expression to Functionally Decrease Epithelial Ovarian Cancer Progression in Tumor-Initiating Cells. Int J Mol Sci 2023; 24:ijms24097826. [PMID: 37175530 PMCID: PMC10178396 DOI: 10.3390/ijms24097826] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/18/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023] Open
Abstract
Epithelial ovarian cancer (EOC) remains the fifth leading cause of cancer-related death in women worldwide, partly due to the survival of chemoresistant, stem-like tumor-initiating cells (TICs) that promote disease relapse. We previously described a role for the NF-κB pathway in promoting TIC chemoresistance and survival through NF-κB transcription factors (TFs) RelA and RelB, which regulate genes important for the inflammatory response and those associated with cancer, including microRNAs (miRNAs). We hypothesized that NF-κB signaling differentially regulates miRNA expression through RelA and RelB to support TIC persistence. Inducible shRNA was stably expressed in OV90 cells to knockdown RELA or RELB; miR-seq analyses identified differentially expressed miRNAs hsa-miR-452-5p and hsa-miR-335-5p in cells grown in TIC versus adherent conditions. We validated the miR-seq findings via qPCR in TIC or adherent conditions with RELA or RELB knocked-down. We confirmed decreased expression of hsa-miR-452-5p when either RELA or RELB were depleted and increased expression of hsa-miR-335-5p when RELA was depleted. Either inhibiting miR-452-5p or mimicking miR-335-5p functionally decreased the stem-like potential of the TICs. These results highlight a novel role of NF-κB TFs in modulating miRNA expression in EOC cells, thus opening a better understanding toward preventing recurrence of EOC.
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Affiliation(s)
- Rahul D Kamdar
- Women's Malignancies Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Brittney S Harrington
- Women's Malignancies Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Emma Attar
- Women's Malignancies Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Soumya Korrapati
- Women's Malignancies Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jyoti Shetty
- CCR Sequencing Facility, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD 21701, USA
| | - Yongmei Zhao
- CCR Sequencing Facility, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD 21701, USA
- Advanced Biomedical Computational Science, Frederick National Laboratory for Cancer Research, Frederick, MD 21701, USA
| | - Bao Tran
- CCR Sequencing Facility, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD 21701, USA
| | - Nathan Wong
- Advanced Biomedical Computational Science, Frederick National Laboratory for Cancer Research, Frederick, MD 21701, USA
- CCR Collaborative Bioinformatics Resource, National Cancer Institute, National Institutes of Health, Bethesda, MD 20814, USA
| | - Carrie D House
- Women's Malignancies Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Christina M Annunziata
- Women's Malignancies Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
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13
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Hossain MA, Rahman MH, Sultana H, Ahsan A, Rayhan SI, Hasan MI, Sohel M, Somadder PD, Moni MA. An integrated in-silico Pharmaco-BioInformatics approaches to identify synergistic effects of COVID-19 to HIV patients. Comput Biol Med 2023; 155:106656. [PMID: 36805222 PMCID: PMC9911982 DOI: 10.1016/j.compbiomed.2023.106656] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [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: 09/10/2022] [Revised: 01/18/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023]
Abstract
BACKGROUND With high inflammatory states from both COVID-19 and HIV conditions further result in complications. The ongoing confrontation between these two viral infections can be avoided by adopting suitable management measures. PURPOSE The aim of this study was to figure out the pharmacological mechanism behind apigenin's role in the synergetic effects of COVID-19 to the progression of HIV patients. METHOD We employed computer-aided methods to uncover similar biological targets and signaling pathways associated with COVID-19 and HIV, along with bioinformatics and network pharmacology techniques to assess the synergetic effects of apigenin on COVID-19 to the progression of HIV, as well as pharmacokinetics analysis to examine apigenin's safety in the human body. RESULT Stress-responsive, membrane receptor, and induction pathways were mostly involved in gene ontology (GO) pathways, whereas apoptosis and inflammatory pathways were significantly associated in the Kyoto encyclopedia of genes and genomes (KEGG). The top 20 hub genes were detected utilizing the shortest path ranked by degree method and protein-protein interaction (PPI), as well as molecular docking and molecular dynamics simulation were performed, revealing apigenin's strong interaction with hub proteins (MAPK3, RELA, MAPK1, EP300, and AKT1). Moreover, the pharmacokinetic features of apigenin revealed that it is an effective therapeutic agent with minimal adverse effects, for instance, hepatoxicity. CONCLUSION Synergetic effects of COVID-19 on the progression of HIV may still be a danger to global public health. Consequently, advanced solutions are required to give valid information regarding apigenin as a suitable therapeutic agent for the management of COVID-19 and HIV synergetic effects. However, the findings have yet to be confirmed in patients, suggesting more in vitro and in vivo studies.
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Affiliation(s)
- Md Arju Hossain
- Department of Biotechnology and Genetic Engineering, Mawlana Bhashani Science and Technology University, Santosh, Tangail, 1902, Bangladesh
| | - Md Habibur Rahman
- Department of Computer Science and Engineering, Islamic University, Kushtia, 7003, Bangladesh; Center for Advanced Bioinformatics and Artificial Intelligent Research, Islamic University, Kushtia, 7003, Bangladesh.
| | - Habiba Sultana
- Department of Biotechnology and Genetic Engineering, Mawlana Bhashani Science and Technology University, Santosh, Tangail, 1902, Bangladesh
| | - Asif Ahsan
- Department of Biotechnology and Genetic Engineering, Mawlana Bhashani Science and Technology University, Santosh, Tangail, 1902, Bangladesh
| | - Saiful Islam Rayhan
- Department of Biochemistry and Molecular Biology, Mawlana Bhashani Science and Technology University, Santosh, Tangail, 1902, Bangladesh
| | - Md Imran Hasan
- Department of Computer Science and Engineering, Islamic University, Kushtia, 7003, Bangladesh
| | - Md Sohel
- Department of Biochemistry and Molecular Biology, Mawlana Bhashani Science and Technology University, Santosh, Tangail, 1902, Bangladesh
| | - Pratul Dipta Somadder
- Department of Biotechnology and Genetic Engineering, Mawlana Bhashani Science and Technology University, Santosh, Tangail, 1902, Bangladesh
| | - Mohammad Ali Moni
- School of Health and Rehabilitation Sciences, Faculty of Health and Behavioural Sciences, The University of Queensland, St Lucia, QLD, 4072, Australia.
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14
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Wang X, Lin T, He Y, Zhou Y, Peng Y, Zhang W, Ni X. Reduced Renal CSE/CBS/H2S Contributes to the Progress of Lupus Nephritis. Biology (Basel) 2023; 12. [PMID: 36829595 DOI: 10.3390/biology12020318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 02/03/2023] [Accepted: 02/07/2023] [Indexed: 02/19/2023]
Abstract
The molecular mechanisms underlying lupus nephritis (LN) pathogenesis are not fully understood. Hydrogen sulfide (H2S) is involved in many pathological and physiological processes. We sought to investigate the roles of H2S in LN pathogenesis. H2S synthase cystathionine-lyase (CSE) and cystathionine-synthetase (CBS) expression was downregulated in renal tissues of patients with LN and their levels were associated with LN's prognosis using the Nephroseq database. Reduced CSE and CBS protein expression in kidney tissues of LN patients and MRL/lpr mice were confirmed by immunohistochemistry. CSE and CBS mRNA levels were reduced in MRL/lpr and pristine- and R848-induced lupus mice. Given that H2S exerts an anti-inflammatory role partly via regulating inflammatory transcription factors (TFs), we analyzed hub TFs by using a bioinformatics approach. It showed that STAT1, RELA, and T-cell-related signaling pathways were enriched in LN. Increased STAT1 and RELA expression were confirmed in renal tissues of LN patients. Treatment of MRL/lpr and pristine mice with H2S donors alleviated systemic lupus erythematosus (SLE) phenotypes and renal injury. H2S donors inhibited RELA level and T-cell infiltration in the kidneys of MRL/lpr and pristine mice. Our data indicated that CSE/CBS/H2S contributes to LN pathogenesis. Supplementation of H2S would be a potential therapeutic strategy for LN.
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15
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Yang K, Zhao J, Liu S, Man S. RELA promotes the progression of oral squamous cell carcinoma via TFAP2A-Wnt/β-catenin signaling. Mol Carcinog 2023; 62:641-651. [PMID: 36789977 DOI: 10.1002/mc.23512] [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: 01/11/2023] [Accepted: 01/26/2023] [Indexed: 02/16/2023]
Abstract
Oral squamous cell carcinoma (OSCC) has emerged as the most prevailing oral malignancy worldwide, characterized by cervical solid lymph node metastasis and strong local invasiveness. Overexpression of Transcription Factor AP-2 alpha (TFAP2A) is observed in a significant proportion of OSCC cases. In this study, we aimed to elucidate the function of TFAP2A in the progression of OSCC and the related molecular signaling pathways. The role of RELA was predicted using bioinformatics analysis. The mRNA abundances of RELA, TFAP2A, and β-catenin were assessed by Western blot and quantitative real-timePCR. The relationship between RELA, TFAP2A, and β-catenin and their correlation with clinicopathological characteristics of OSCC was evaluated. The target of RELA and TFAP2A was identified by the chromatin immunoprecipitation as well as luciferase reporter assay. The colony formation assay and MTS assay were performed to determine the proliferative level of OSCC cells. OSCC cell motility was determined by Transwell assay and wound-healing assay. The protein expressions of epithelial-mesenchymal transition-associated factors were evaluated by Western blot. The expressions of RELA and TFAP2A were elevated in OSCC, and their expressions displayed a positive correlation. The expression levels of RELA and TFAP2A were found to be associated with TNM staging and lymphatic metastasis of OSCC patients. RELA upregulation promoted OSCC progression, as manifested by increased levels of proliferation, invasion, and migration of OSCC cells. We also demonstrated that RELA was directly bound to the promoter of TFAP2A transcription, which activated multiple malignant and metastatic phenotypes. Furthermore, TFAP2A activated the Wnt/β-catenin signaling by targeting the promoter regions of β-catenin. The study found that RELA is critical for promoting the progression of OSCC via the RELA-TFAP2A-Wnt/β-catenin signaling pathway. The RELA-TFAP2A-Wnt/β-catenin signaling pathway is a potential target for reducing the aggressiveness of OSCC.
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Affiliation(s)
- Kaicheng Yang
- Department of Stomatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Jianguang Zhao
- Department of Stomatology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Shenghui Liu
- Department of Otolaryngology Head and Neck, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Shasha Man
- Department of Stomatology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei Province, China
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16
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Sumida S, Toki SI, Mori T, Satomi K, Takao S, Nobusawa S, Kakimoto T, Nakagawa S, Ryo E, Matsushita Y, Ichimura K, Nishisho T, Bando Y, Yoshida A. ZFTA:: RELA fusion in a distinct liposarcoma morphologically overlapping with chondroid lipoma. Genes Chromosomes Cancer 2023; 62:101-106. [PMID: 36201637 DOI: 10.1002/gcc.23098] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/06/2022] [Accepted: 09/06/2022] [Indexed: 12/13/2022] Open
Abstract
Chondroid lipoma is a rare benign adipose tumor characterized by a recurrent ZFTA::MRTFB fusion. Herein, we report an unusual liposarcoma that partly exhibited overlapping features with those of chondroid lipoma and harbored a ZFTA::RELA fusion. A 59-year-old man presented with a shoulder mass that had existed for approximately 8 years and with increasing pain due to a pelvic mass. The 5.8-cm resected shoulder tumor partly consisted of nests and strands of variably lipogenic epithelioid cells within a hyalinized or focally chondromyxoid stroma, indistinguishable from chondroid lipoma. The histological pattern gradually transitioned to highly cellular, stroma-poor, diffuse sheets of cells with greater nuclear atypia and mitotic activity. Vascular invasion and necrosis were present. The metastatic pelvic tumor revealed a similar histology. Despite multimodal treatment, the patient developed multiple bone metastases and succumbed to the disease 14 months after presentation. Targeted RNA sequencing identified an in-frame ZFTA (exon 3)::RELA (exon 2) fusion, which was confirmed by reverse transcription-polymerase chain reaction, Sanger sequencing, and break-apart fluorescent in situ hybridization assays. The tumor showed a different histology from that of ependymoma, no brain involvement, and no match with any sarcoma types or ZFTA::RELA-positive ependymomas according to DNA methylation analysis. p65 and L1CAM were diffusely expressed, and a CDKN2A/B deletion was present. This is the first report of an extra-central nervous system tumor with a ZFTA::RELA fusion. The tumor partly displayed an overlapping histology with that of chondroid lipoma, suggesting that it may represent a hitherto undescribed malignant chondroid lipoma with an alternative ZFTA fusion.
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Affiliation(s)
- Satoshi Sumida
- Division of Pathology, Tokushima University Hospital, Tokushima, Japan
| | - Shun-Ichi Toki
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Taisuke Mori
- Department of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan.,Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo, Japan
| | - Kaishi Satomi
- Department of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan.,Department of Pathology, Kyorin University School of Medicine, Tokyo, Japan
| | - Shoichiro Takao
- Department of Diagnostic Radiology, Graduate School of Health Sciences, Tokushima University, Tokushima, Japan
| | | | - Takumi Kakimoto
- Division of Pathology, Tokushima University Hospital, Tokushima, Japan
| | - Shinya Nakagawa
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Eijitsu Ryo
- Division of Molecular Pathology, National Cancer Center Research Institute, Tokyo, Japan
| | - Yuko Matsushita
- Department of Brain Disease Translational Research, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Koichi Ichimura
- Department of Brain Disease Translational Research, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Toshihiko Nishisho
- Department of Orthopedics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Yoshimi Bando
- Division of Pathology, Tokushima University Hospital, Tokushima, Japan
| | - Akihiko Yoshida
- Department of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan.,Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan
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17
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Galstyan SA, Telysheva EN, Lavrinovich AO, Shaikhaev EG, Snigireva GP, Petrova EI, Gorelyshev SK, Zheludkova OG, Kushel YV, Kumirova EV, Ryzhova MV. [Verification of the diagnosis of supratentorial ependymomas by real-time PCR]. Arkh Patol 2023; 85:5-11. [PMID: 37272434 DOI: 10.17116/patol2023850315] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Differential diagnosis of supratentorial ependymomas is of particular difficulty in neurooncology due to nonspecific clinical and radiographic findings, a rare seen «classic» morphological picture, and a nonspecific immunophenotype. Thanks to molecular genetic methods, in particular real-time PCR, it has become possible to verify supratentorial ependymomas and identify their molecular group, on which further prognosis depends. OBJECTIVE To develop a set of molecular genetic tests based on real-time PCR to verify supratentorial ependymomas. MATERIAL AND METHODS 56 tissue samples were collected from patients with supratentorial ependymomas, WHO Grade II, and anaplastic ependymomas, WHO Grade III. We developed primers and fluorescent TaqMan probes for real-time PCR analysis to detect the ZFTA::RELA, ZFTA::MAML2, ZFTA::NCOA2, ZFTA::MAML3, YAP1::MAMLD1, and YAP1::FAM118B gene fusions. For immunohistochemical analysis, monoclonal rabbit anti-NF-kb p65 antibodies (HUABIO, China) were used, the study was carried out on AutostainerLink 48 immunostainer (DAKO, Denmark). RESULTS Real-time PCR was able to verify the diagnosis for 69.9% (n=39) of samples and classify them into molecular groups of ZFTA- or YAP1-positive supratentorial ependymomas. Immunohistochemically it was possible to verify 58% (n=29) ependymomas. CONCLUSION Diagnosis by real-time PCR is a relatively fast, accessible and easily interpreted method that allows verification of the molecular group in 70% of cases of supratentorial ependymomas without the use of additional methods.
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Affiliation(s)
| | | | | | | | | | - E I Petrova
- Burdenko Neurosurgical Center, Moscow, Russia
| | | | - O G Zheludkova
- V.F. Voyno-Yasenetsky Scientific and Practical Center of Specialized Medical Care for Children, Moscow, Russia
| | - Y V Kushel
- Burdenko Neurosurgical Center, Moscow, Russia
| | - E V Kumirova
- Morozov Children's City Clinical Hospital, Moscow, Russia
| | - M V Ryzhova
- Burdenko Neurosurgical Center, Moscow, Russia
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18
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An JW, Pimpale-Chavan P, Stone DL, Bandeira M, Dedeoglu F, Lo J, Bohnsack J, Rosenzweig S, Schnappauf O, Dissanayake D, Hiraki LT, Kastner DL, Pelajo C, Laxer RM, Aksentijevich I. Case report: Novel variants in RELA associated with familial Behcet's-like disease. Front Immunol 2023; 14:1127085. [PMID: 36926348 PMCID: PMC10011480 DOI: 10.3389/fimmu.2023.1127085] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/09/2023] [Indexed: 03/08/2023] Open
Abstract
RELA haploinsufficiency is a recently described autoinflammatory condition presenting with intermittent fevers and mucocutaneous ulcerations. The RELA gene encodes the p65 protein, one of five NF-κB family transcription factors. As RELA is an essential regulator of mucosal homeostasis, haploinsufficiency leads to decreased NF-κB signaling which promotes TNF-driven mucosal apoptosis with impaired epithelial recovery. Thus far, only eight cases have been reported in the literature. Here, we report four families with three novel and one previously described pathogenic variant in RELA. These four families included 23 affected individuals for which genetic testing was available in 16. Almost half of these patients had been previously diagnosed with more common rheumatologic entities (such as Behcet's Disease; BD) prior to the discovery of their pathogenic RELA variants. The most common clinical features were orogenital ulcers, rash, joint inflammation, and fever. The least common were conjunctivitis and recurrent infections. Clinical variability was remarkable even among familial cases, and incomplete penetrance was observed. Patients in our series were treated with a variety of medications, and benefit was observed with glucocorticoids, colchicine, and TNF inhibitors. Altogether, our work adds to the current literature and doubles the number of reported cases with RELA-Associated Inflammatory Disease (RAID). It reaffirms the central importance of the NF-κB pathway in immunity and inflammation, as well as the important regulatory role of RELA in mucosal homeostasis. RELA associated inflammatory disease should be considered in all patients with BD, particularly those with early onset and/or with a strong family history.
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Affiliation(s)
- Jason W An
- Division of Rheumatology, Department of Medicine, St. Michael's Hospital, University of Toronto, Toronto, ON, Canada.,Division of Rheumatology, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Pallavi Pimpale-Chavan
- National Human Genome Research Institute (NHGRI), National Institutes of Health (NIH), Bethesda, MD, United States
| | - Deborah L Stone
- National Human Genome Research Institute (NHGRI), National Institutes of Health (NIH), Bethesda, MD, United States
| | - Marcia Bandeira
- Division of Rheumatology, Hospital Pequeno Príncipe e Hospital de Clínicas, University Federal do Parana, Curitiba, Brazil
| | - Fatma Dedeoglu
- Division of Immunology, Rheumatology Program, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - Jeffrey Lo
- Division of Immunology, Rheumatology Program, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, Boston, MA, United States
| | - John Bohnsack
- Department of Pediatrics, Spencer Fox Eccles School of Medicine, University of Utah, Salt Lake City, UT, United States
| | - Sofia Rosenzweig
- National Human Genome Research Institute (NHGRI), National Institutes of Health (NIH), Bethesda, MD, United States
| | - Oskar Schnappauf
- National Human Genome Research Institute (NHGRI), National Institutes of Health (NIH), Bethesda, MD, United States
| | - Dilan Dissanayake
- Division of Rheumatology, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Linda T Hiraki
- Division of Rheumatology, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Daniel L Kastner
- National Human Genome Research Institute (NHGRI), National Institutes of Health (NIH), Bethesda, MD, United States
| | - Christina Pelajo
- Division of Rheumatology, Hospital Pequeno Príncipe e Hospital de Clínicas, University Federal do Parana, Curitiba, Brazil
| | - Ronald M Laxer
- Division of Rheumatology, Department of Medicine, St. Michael's Hospital, University of Toronto, Toronto, ON, Canada.,Division of Rheumatology, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
| | - Ivona Aksentijevich
- National Human Genome Research Institute (NHGRI), National Institutes of Health (NIH), Bethesda, MD, United States
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Oh KK, Choi YR, Gupta H, Ganesan R, Sharma SP, Won SM, Jeong JJ, Lee SB, Cha MG, Kwon GH, Kim DJ, Suk KT. Identification of Gut Microbiome Metabolites via Network Pharmacology Analysis in Treating Alcoholic Liver Disease. Curr Issues Mol Biol 2022; 44:3253-3266. [PMID: 35877448 PMCID: PMC9316215 DOI: 10.3390/cimb44070224] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/15/2022] [Accepted: 07/17/2022] [Indexed: 12/03/2022] Open
Abstract
Alcoholic liver disease (ALD) is linked to a broad spectrum of diseases, including diabetes, hypertension, atherosclerosis, and even liver carcinoma. The ALD spectrum includes alcoholic fatty liver disease (AFLD), alcoholic hepatitis, and cirrhosis. Most recently, some reports demonstrated that the pathogenesis of ALD is strongly associated with metabolites of human microbiota. AFLD was the onset of disease among ALDs, the initial cause of which is alcohol consumption. Thus, we analyzed the significant metabolites of microbiota against AFLD via the network pharmacology concept. The metabolites from microbiota were retrieved by the gutMGene database; sequentially, AFLD targets were identified by public databases (DisGeNET, OMIM). The final targets were utilized for protein–protein interaction (PPI) networks and signaling pathway analyses. Then, we performed a molecular docking test (MDT) to verify the affinity between metabolite(s) and target(s) utilizing the Autodock 1.5.6 tool. From a holistic viewpoint, we integrated the relationships of microbiota-signaling pathways-targets-metabolites (MSTM) using the R Package. We identified the uppermost six key targets (TLR4, RELA, IL6, PPARG, COX-2, and CYP1A2) against AFLD. The PPI network analysis revealed that TLR4, RELA, IL6, PPARG, and COX-2 had equivalent degrees of value (4); however, CYP1A2 had no associations with the other targets. The bubble chart showed that the PI3K-Akt signaling pathway in nine signaling pathways might be the most significant mechanism with antagonistic functions in the treatment of AFLD. The MDT confirmed that Icaritin is a promising agent to bind stably to RELA (known as NF-Κb). In parallel, Bacterium MRG-PMF-1, the PI3K-Akt signaling pathway, RELA, and Icaritin were the most significant components against AFLD in MSTM networks. In conclusion, we showed that the Icaritin–RELA complex on the PI3K-Akt signaling pathway by bacterial MRG-PMF-1 might have promising therapeutic effects against AFLD, providing crucial evidence for further research.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Ki-Tae Suk
- Correspondence: ; Tel.: +82-10-5365-5700; Fax: +82-033-248-3481
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20
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Xu X, Qiao D, Pan L, Boldogh I, Zhao Y, Brasier AR. RELA∙8-Oxoguanine DNA Glycosylase1 Is an Epigenetic Regulatory Complex Coordinating the Hexosamine Biosynthetic Pathway in RSV Infection. Cells 2022; 11:2210. [PMID: 35883652 DOI: 10.3390/cells11142210] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 07/12/2022] [Accepted: 07/12/2022] [Indexed: 11/16/2022] Open
Abstract
Respiratory syncytial virus (RSV), or human orthopneumovirus, is a negative-sense RNA virus that is the causative agent of severe lower respiratory tract infections in children and is associated with exacerbations of adult lung disease. The mechanisms how severe and/or repetitive virus infections cause declines in pulmonary capacity are not fully understood. We have recently discovered that viral replication triggers epithelial plasticity and metabolic reprogramming involving the hexosamine biosynthetic pathway (HBP). In this study, we examine the relationship between viral induced innate inflammation and the activation of hexosamine biosynthesis in small airway epithelial cells. We observe that RSV induces ~2-fold accumulation of intracellular UDP-GlcNAc, the end-product of the HBP and the obligate substrate of N glycosylation. Using two different silencing approaches, we observe that RSV replication activates the HBP pathway in a manner dependent on the RELA proto-oncogene (65 kDa subunit). To better understand the effect of RSV on the cellular N glycoproteome, and its RELA dependence, we conduct affinity enriched LC-MS profiling in wild-type and RELA-silenced cells. We find that RSV induces the accumulation of 171 N glycosylated peptides in a RELA-dependent manner; these proteins are functionally enriched in integrins and basal lamina formation. To elaborate this mechanism of HBP expression, we demonstrate that RSV infection coordinately induces the HBP pathway enzymes in a manner requiring RELA; these genes include Glutamine-Fructose-6-Phosphate Transaminase 1 (GFPT)-1/2, Glucosamine-Phosphate N-Acetyltransferase (GNPNAT)-1, phosphoglucomutase (PGM)-3 and UDP-N-Acetylglucosamine Pyrophosphorylase (UAP)-1. Using small-molecule inhibitor(s) of 8-oxoguanine DNA glycosylase1 (OGG1), we observe that OGG1 is also required for the expression of HBP pathway. In proximity ligation assays, RSV induces the formation of a nuclear and mitochondrial RELA∙OGG1 complex. In co-immunoprecipitaton (IP) experiments, we discover that RSV induces Ser 536-phosphorylated RELA to complex with OGG1. Chromatin IP experiments demonstrate a major role of OGG1 in supporting the recruitment of RELA and phosphorylated RNA Pol II to the HBP pathway genes. We conclude that the RELA∙OGG1 complex is an epigenetic regulator mediating metabolic reprogramming and N glycoprotein modifications of integrins in response to RSV. These findings have implications for viral-induced adaptive epithelial responses.
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Yu L, Lu J, Xie H, Ni J, Chen S, Zhao Q, Xie N, Lu L, Wang X, Li B. RELA-induced MiR-21 Exerts Oncogenic Effects on PDAC via Targeting of ARHGAP24. J Cancer 2022; 13:2781-2797. [PMID: 35812178 PMCID: PMC9254878 DOI: 10.7150/jca.73690] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 05/25/2022] [Indexed: 11/05/2022] Open
Abstract
Inflammation is one of the inducing factors of pancreatic ductal adenocarcinoma (PDAC), and microRNAs have been confirmed to be involved in the occurrence and development of PDAC. However, whether RELA, an inflammatory regulator, is involved in the regulation of PDAC by miRNA remains to be further studied. In the present study miR-21 was characterized and its upstream regulatory mechanism was investigated, as well as its functional effects and target genes in pancreatic ductal adenocarcinoma (PDAC). In situ hybridization analysis confirmed increased miR-21 expression levels in PDAC tissues. The results of the chromatin immunoprecipitation and dual-luciferase reporter assays demonstrated that transcription factor RELA modulated miR-21 transcription in the PDAC, PANC-1 and MIA PaCa-2 cell lines. Subsequently, a cell viability assay, EdU staining assay and flow cytometry analysis, demonstrated that miR-21 promoted cell proliferation and cell cycle progression, but inhibited cell apoptosis in vitro. Furthermore, a xenograft assay demonstrated that miR-21 accelerated tumor growth in vivo. Mechanistically, miR-21 directly regulated the expression of Rho GTPase activating protein 24 (ARHGAP24), which was indicated to be a tumor suppressor gene. Moreover, both miR-21 and ARHGAP24 were strongly associated with clinical features and may therefore serve as valuable biomarkers in PDAC prognosis.
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Affiliation(s)
- Lanting Yu
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China.,Shanghai Key Laboratory of Pancreatic Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Jiawei Lu
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China.,Shanghai Key Laboratory of Pancreatic Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Haoran Xie
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China.,Shanghai Key Laboratory of Pancreatic Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Jianbo Ni
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China.,Shanghai Key Laboratory of Pancreatic Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Sumin Chen
- Department of Gastroenterology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200336, China
| | - Qiuyan Zhao
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China.,Shanghai Key Laboratory of Pancreatic Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Ni Xie
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China.,Shanghai Key Laboratory of Pancreatic Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Lungen Lu
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China.,Shanghai Key Laboratory of Pancreatic Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Xingpeng Wang
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China.,Shanghai Key Laboratory of Pancreatic Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
| | - Baiwen Li
- Department of Gastroenterology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China.,Shanghai Key Laboratory of Pancreatic Diseases, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201620, China
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22
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Xing T, Zhao Y, Zhao J, Jiang Z, Zhang Y, Li S. Duhuo Jisheng Decoction inhibits the activity of osteoclasts in osteonecrosis of the femoral head via regulation of the RELA/AKT1 axis. Am J Transl Res 2022; 14:3559-3571. [PMID: 35702106 PMCID: PMC9185058] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/27/2021] [Indexed: 06/15/2023]
Abstract
OBJECTIVE To investigate the effect of Duhuo Jisheng Decotion (DHJSD) on the activity of osteoclasts in osteonecrosis of the femoral head (ONFH) and its underlying mechanism relating to the RELA/AKT1 axis. METHODS The TCMSP database was used to search for the effective ingredients and the targets of various Chinese medicines in DHJSD. Its targets were intersected with ONFH risk genes in DisGeNET and Malacards databases to obtain the potential target genes. qRT-PCR was used to detect the expression of potential target genes in ONFH tissues, and the ChIP experiment was used to verify the relationship between RELA and AKT1 promoter. An ONFH rat model was established and DHJSD was used for the treatment. The expressions of RELA and AKT1 in rats were intervened, and rats were grouped. qRT-PCR was applied to detect the expression levels of osteoclast markers ACP5, CTSK, and RANK in the tissues to evaluate the regulation of DHJSD on target genes and the mechanism of osteoclast differentiation. RESULTS A total of 231 effective targets of DHJSD were screened out in the TCMSP database. Intersection with ONFH risk genes yielded a total of 20 candidate genes. Protein-protein interaction analysis showed that AKT1 regulated other genes. KEGG functional enrichment analysis revealed that STAT1, AKT1, PPARG, PPARG, TNF and RELA were enriched in osteoclast differentiation pathway. Compared with normal tissues, the expression of STAT1 was decreased in ONFH tissues, and the expressions of AKT1, PPARG, TNF, and RELA were increased, among which, RELA and AKT1 are the most significantly increased genes (all P<0.05). ChIP experiment found that RELA had a binding relationship with AKT1 promoter. DHJST had the inhibitory effect on the expression of RELA and AKT1 in ONFH tissues, as well as the levels of ACP5, CTSK, and RANK. However, overexpression of RELA or AKT1 attenuated the inhibitory effect of DHJSD on the levels of ACP5, CTSK and RANK. Meanwhile, knocking down RELA partially reversed the effect of AKT1 on the effect of DHJSD. CONCLUSION DHJSD inhibits the activity of osteoclasts in ONFH by inhibiting the RELA/AKT1 axis. This study further clarifies the potential specific mechanism of DHJSD to improve ONFH.
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Affiliation(s)
- Tao Xing
- Department of Trauma Center, Gansu Provincial Hospital of TCMLanzhou 730050, Gansu Province, China
| | - Yongqiang Zhao
- Department of Surgery, Gansu Provincial Hospital of TCMLanzhou 730050, Gansu Province, China
| | - Jun Zhao
- Clinical Medicine Center of Orthopedics and Traumatology, Gansu Academy of TCMLanzhou, Gansu Province, China
| | - Zhenxing Jiang
- Department of Repair and Reconstruction Orthopedics, Gansu Provincial Hospital of TCMLanzhou 730050, Gansu Province, China
| | - Yingshuan Zhang
- Clinical College of TCM, Gansu University of Chinese MedicineLanzhou 730000, Gansu Province, China
| | - Shenghua Li
- Department of Clinical Medicine Center of Orthopedics, Gansu Provincial Hospital of TCMLanzhou 730050, Gansu Province, China
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23
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Hu Y, Xu R, Ma J, Yan Z, Ma J. Curcumol enhances cisplatin sensitivity of gastric cancer: involvement of microRNA-7 and the nuclear factor-kappa B/snail family transcriptional repressor 1 axis. Bioengineered 2022; 13:11668-11683. [PMID: 35510522 PMCID: PMC9275945 DOI: 10.1080/21655979.2022.2070975] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Cisplatin is a primary chemotherapeutic drug for gastric cancer (GC) patients, but the drug resistance remains the leading cause of treatment failure and high mortality. Curcumol is a bioactive sesquiterpenoid that has reportedly been linked to cisplatin sensitivity in GC. This study focuses on the exact functions of curcumol in the cisplatin sensitivity of GC cells and the molecules of action. The curcumol treatment reduced the viability and migration and enhanced cisplatin sensitivity of GC cells in a dose-dependent manner. Microarray analysis suggested that microRNA-7 (miR-7) was the most upregulated miRNA in GC cells after curcumol treatment. The Kyoto Encyclopedia of Genes and Genomes pathway enrichment analysis showed that the curcumol-affected genes, including the target genes of miR-7, were enriched in the nuclear factor-kappa B (NF-κB) pathway, whose activity was suppressed after curcumol treatment. miR-7 was found to target and suppress RELA proto-oncogene (RELA, also known as p65), a NF-κB subunit. Downregulation of miR-7 blocked the sensitizing effects of curcumol on cells to cisplatin and led to increased expression of NF-κB p65 and snail family transcriptional repressor 1 (SNAIL). Further downregulation of RELA enhanced, whereas upregulation of SNAIL suppressed the sensitivity again. In summary, this study suggests that curcumol sensitizes GC cells to cisplatin via miR-7 and the suppression of the NF-κB/SNAIL axis. The findings may offer new thoughts that curcumol in combination with cisplatin might be a useful strategy for GC management.
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Affiliation(s)
- Ying Hu
- Department of Oncology, Nanjing Jiangning TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Nanjing, P.R. China
| | - Ruitong Xu
- Department of Geriatric Gastroenterology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, P.R. China
| | - Jinxia Ma
- Department of Spleen and Stomach, Nanjing Jiangning TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Nanjing, P.R. China
| | - Zhanpeng Yan
- Clinical Research Department of Chinese and Western Medicine, Jiangsu Province Institute of Traditional Chinese Medicine, Nanjing, P.R. China
| | - Jun Ma
- Department of Oncology, Huai'an TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Huai'an, P.R. China
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He S, Zhou M, Zheng H, Wang Y, Wu S, Gao Y, Chen J. Resveratrol inhibits the progression of premature senescence partially by regulating v-rel avian reticuloendotheliosis viral oncogene homolog A ( RELA) and sirtuin 1 (SIRT1). Ren Fail 2022; 44:171-183. [PMID: 35166167 PMCID: PMC8856048 DOI: 10.1080/0886022x.2022.2029488] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Objective To explore the effect of resveratrol in premature senescence and reveal its anti-premature senescence mechanisms through network pharmacology. Methods In this study, the H2O2-induced bone marrow mesenchymal stem cells (BMMSCs) premature senescence model is applied. Cell counting kit-8 assay, β-galactosidase staining and flow cytometry are conducted to detect the proliferation, senescence and apoptosis of BMMSCs. Bioinformatics analyses are used to screen and validate molecular targets of resveratrol acting on premature senescence. Dual-luciferase reporter assay is conducted to verify the interaction between v-rel avian reticuloendotheliosis viral oncogene homolog A (RELA) and sirtuin 1 (SIRT1). RT-qPCR and western blot are adopted to detect mRNA and protein levels of RELA, SIRT1, senescence-related genes and apoptosis-related genes. Results First, we proved that resveratrol alleviated the H2O2-induced senescence of BMMSCs. Then, bioinformatics analysis revealed that RELA was the downstream target of resveratrol and SIRT1 was the downstream target of RELA, respectively, involved in premature aging. RELA/SIRT1 may be the potential target of resveratrol for premature senescence. Notably, rescue experiments indicated that resveratrol inhibited premature senescence partially through targeting regulation RELA/SIRT1. Conclusion In our study, we confirm the functional role of the resveratrol-RELA- SIRT1 axis in the progression of premature senescence, which provides a latent target for premature senescence treatment.
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Affiliation(s)
- Shuangjun He
- Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Danyang, China
| | - Meng Zhou
- Department of Orthopedic Surgery, Tengzhou Central People's Hospital, Tengzhou, China
| | - Hongming Zheng
- Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Danyang, China
| | - Yaowei Wang
- Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Danyang, China
| | - Shuhua Wu
- Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Danyang, China
| | - Yuan Gao
- Department of Forensic Science, Medical School of Soochow University, Suzhou, China
| | - Jianhong Chen
- Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Danyang, China
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25
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Karimi S, Salmani S, Alizadeh A, Rezakhani L, Saltanatpour Z, Ghasemi S. A Decrease in CD44 on Cell Surfaces (MKN-45 cell line) After RELA Knockout Using CRISPR/Cas9. Int J Mol Cell Med 2022; 11:117-126. [PMID: 37091035 PMCID: PMC10116351 DOI: 10.22088/ijmcm.bums.11.2.117] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 01/14/2023] [Accepted: 01/21/2023] [Indexed: 04/25/2023]
Abstract
The NF-kB signaling pathway was introduced as a key pathway in carcinogenesis that is induced by inflammation in gastrointestinal malignancies. The RelA transcription factor is an important component of this signaling pathway. Furthermore, CD44 is implicated in the tumorigenesis and metastasis of gastric cancer. The aim of this study was to assay the effect of RELA knockout on CD44 expression in MKN45 cells. CRISPR/Cas9 was used to knock out RELA in MKN-45. The median fluorescence intensity (MFI) of CD44 before and after RELA knockout is analyzed in MKN45. The CRISPR/Cas9 vector pSpCas9 (BB)-2A-Puro (PX459) was used for gRNA cloning (two guides). The MKN-45 cell line was co-transfected. The purified co-transfected cells with puromycin were cultured and used for the RELA gene expression assay by real-time PCR. Flow cytometry was used for the analysis of the MFI of CD44+ in MKN45. The results showed that 180 nucleotide sequences between exon 2 and exon 3 of RELA were deleted in MKN45. RELA expression significantly (P<0.001) decreased after CRISPR/Cas9 knockout. Compared to the control group, the MFI of CD44 in transfected cells significantly decreased (P <0.001). Knockout of RELA significantly decreased CD44 expression in MKN45 cells. It can be concluded that the NF-kB signaling pathway via RELA is related to CD44 expression and consequently the tumorigenesis of gastric cancer. More studies about this relationship are recommended.
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Affiliation(s)
- Saeid Karimi
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran.
| | - Sima Salmani
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran.
| | - Akram Alizadeh
- Department of Tissue Engineering and Applied Cell Sciences, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran.
| | - Leila Rezakhani
- Fertility and Infertility Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Zohreh Saltanatpour
- Pediatric Cell and Gene Therapy Research Center, Gene, Cell & Tissue Research Institute, Tehran University of Medical Sciences, Tehran, Iran.
- Stem Cell and Regenerative Medicine Center of Excellence, Tehran University of Medical Sciences, Tehran, Iran.
| | - Sorayya Ghasemi
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran.
- Corresponding Author: Sorayya Ghasemi Address: Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran. E-mail
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26
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Skibba ME, Xu X, Weiss K, Huisken J, Brasier AR. Role of Secretoglobin + (club cell) NFκB/ RelA-TGFβ signaling in aero-allergen-induced epithelial plasticity and subepithelial myofibroblast transdifferentiation. Respir Res 2021; 22:315. [PMID: 34930252 PMCID: PMC8690490 DOI: 10.1186/s12931-021-01910-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 12/03/2021] [Indexed: 02/08/2023] Open
Abstract
Repetitive aeroallergen exposure is linked to sensitization and airway remodeling through incompletely understood mechanisms. In this study, we examine the dynamic mucosal response to cat dander extract (CDE), a ubiquitous aero-allergen linked to remodeling, sensitization and asthma. We find that daily exposure of CDE in naïve C57BL/6 mice activates innate neutrophilic inflammation followed by transition to a lymphocytic response associated with waves of mucosal transforming growth factor (TGF) isoform expression. In parallel, enhanced bronchiolar Smad3 expression and accumulation of phospho-SMAD3 was observed, indicating paracrine activation of canonical TGFβR signaling. CDE exposure similarly triggered epithelial cell plasticity, associated with expression of mesenchymal regulatory factors (Snai1 and Zeb1), reduction of epithelial markers (Cdh1) and activation of the NFκB/RelA transcriptional activator. To determine whether NFκB functionally mediates CDE-induced growth factor response, mice were stimulated with CDE in the absence or presence of a selective IKK inhibitor. IKK inhibition substantially reduced the level of CDE-induced TGFβ1 expression, pSMAD3 accumulation, Snai1 and Zeb1 expression. Activation of epithelial plasticity was demonstrated by flow cytometry in whole lung homogenates, where CDE induces accumulation of SMA+Epcam+ population. Club cells are important sources of cytokine and growth factor production. To determine whether Club cell innate signaling through NFκB/RelA mediated CDE induced TGFβ signaling, we depleted RelA in Secretoglobin (Scgb1a1)-expressing bronchiolar cells. Immunofluorescence-optical clearing light sheet microscopy showed a punctate distribution of Scgb1a1 progenitors throughout the small airway. We found that RelA depletion in Secretoglobin+ cells results in inhibition of the mucosal TGFβ response, blockade of EMT and reduced subepithelial myofibroblast expansion. We conclude that the Secretoglobin—derived bronchiolar cell is central to coordinating the innate response required for mucosal TGFβ1 response, EMT and myofibroblast expansion. These data have important mechanistic implications for how aero-allergens trigger mucosal injury response and remodeling in the small airway.
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Affiliation(s)
- Melissa E Skibba
- School of Medicine and Public Health, University of Wisconsin Madison, 4248 Health Sciences Learning Center, Madison, WI, 53705, USA
| | - Xiaofang Xu
- School of Medicine and Public Health, University of Wisconsin Madison, 4248 Health Sciences Learning Center, Madison, WI, 53705, USA
| | - Kurt Weiss
- Morgridge Institute for Research, Madison, WI, USA
| | - Jan Huisken
- Morgridge Institute for Research, Madison, WI, USA.,Dept. of Integrative Biology, University of Wisconsin, Madison, WI, USA
| | - Allan R Brasier
- School of Medicine and Public Health, University of Wisconsin Madison, 4248 Health Sciences Learning Center, Madison, WI, 53705, USA. .,Institute for Clinical and Translational Research, Madison, WI, USA.
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27
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Larrew T, Saway BF, Lowe SR, Olar A. Molecular Classification and Therapeutic Targets in Ependymoma. Cancers (Basel) 2021; 13:cancers13246218. [PMID: 34944845 PMCID: PMC8699461 DOI: 10.3390/cancers13246218] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 12/05/2021] [Accepted: 12/08/2021] [Indexed: 12/12/2022] Open
Abstract
Ependymoma is a biologically diverse tumor wherein molecular classification has superseded traditional histological grading based on its superior ability to characterize behavior, prognosis, and possible targeted therapies. The current, updated molecular classification of ependymoma consists of ten distinct subgroups spread evenly among the spinal, infratentorial, and supratentorial compartments, each with its own distinct clinical and molecular characteristics. In this review, the history, histopathology, standard of care, prognosis, oncogenic drivers, and hypothesized molecular targets for all subgroups of ependymoma are explored. This review emphasizes that despite the varied behavior of the ependymoma subgroups, it remains clear that research must be performed to further elucidate molecular targets for these tumors. Although not all ependymoma subgroups are oncologically aggressive, development of targeted therapies is essential, particularly for cases where surgical resection is not an option without causing significant morbidity. The development of molecular therapies must rely on building upon our current understanding of ependymoma oncogenesis, as well as cultivating transfer of knowledge based on malignancies with similar genomic alterations.
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Affiliation(s)
- Thomas Larrew
- Department of Neurosurgery, Medical University of South Carolina, Charleston, SC 29425, USA; (T.L.); (B.F.S.)
| | - Brian Fabian Saway
- Department of Neurosurgery, Medical University of South Carolina, Charleston, SC 29425, USA; (T.L.); (B.F.S.)
| | | | - Adriana Olar
- NOMIX Laboratories, Denver, CO 80218, USA
- Correspondence: or
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Cao H, Wang D, Sun P, Chen L, Feng Y, Gao R. RNA-seq reveals microRNA-302b as a suppressor of prostate cancer epithelial-mesenchymal transition by targeting RELA/NF-κB. Am J Cancer Res 2021; 11:5715-5725. [PMID: 34873489 PMCID: PMC8640823] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 09/10/2021] [Indexed: 06/13/2023] Open
Abstract
To identify novel biomarker(s) in prostate cancer and demonstrate the mechanistic involvements in this disease, RNA-seq was employed to reveal the differentially expressed genes in the blood samples from prostate cancer patients. Relative expression of miR-302b-3p was evaluated using real-time PCR. The potential regulation of RELA by miR-302b-3p was assessed by luciferase reporter assay. Protein levels of NF-κB, Vimentin, N-cadherin and E-cadherin, were quantified using western blotting. Transwell chamber was employed to measure cell migratory and invasive capacity, while cell attachment/detachment assay was performed to evaluated epithelial-mesenchymal transition (EMT)-related behavior. Xenograft tumor model was adopted to determine the anti-tumor activity of miR-302b-3p in vivo. We demonstrated miR-302b-3p was down-regulated in prostate cancer both in vivo and in vitro. We predicted and identified RELA as directly targeted by miR-302b-3p. Ectopic miR-302b-3p expression in PC-3 cells significantly suppressed cell migration, invasion, attachment, detachment capacity, which was accompanied with a decrease in the expression of N-cadherin and Vimentin, and an increase of E-cadherin expression. MiR-302b-3p-proficiency greatly delayed xenograft tumor growth and associated with favorable overall survival. Co-introduction of RELA completely abolished anti-tumor effects of miR-302b-3p, which indicated a potential genetic interaction between RELA/NF-κB and miR-302b-3p. We characterized the aberrant down-regulation of miR-302b-3p in prostate cancer and unraveled a possible involvement of miR-302b-3p/RELA signaling axis in this scenario.
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Affiliation(s)
- Hongwen Cao
- Surgical Department I (Urology Department), Longhua Hospital Shanghai University of Traditional Chinese Medicine No. 725 Wanping Road South, Xuhui District, Shanghai 200032, China
| | - Dan Wang
- Surgical Department I (Urology Department), Longhua Hospital Shanghai University of Traditional Chinese Medicine No. 725 Wanping Road South, Xuhui District, Shanghai 200032, China
| | - Peng Sun
- Surgical Department I (Urology Department), Longhua Hospital Shanghai University of Traditional Chinese Medicine No. 725 Wanping Road South, Xuhui District, Shanghai 200032, China
| | - Lei Chen
- Surgical Department I (Urology Department), Longhua Hospital Shanghai University of Traditional Chinese Medicine No. 725 Wanping Road South, Xuhui District, Shanghai 200032, China
| | - Yigeng Feng
- Surgical Department I (Urology Department), Longhua Hospital Shanghai University of Traditional Chinese Medicine No. 725 Wanping Road South, Xuhui District, Shanghai 200032, China
| | - Renjie Gao
- Surgical Department I (Urology Department), Longhua Hospital Shanghai University of Traditional Chinese Medicine No. 725 Wanping Road South, Xuhui District, Shanghai 200032, China
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Liu Y, Du Z, Xu Z, Jin T, Xu K, Huang M, Wang S, Zheng Y, Liu M, Xu H. Overexpressed GNA13 induces temozolomide sensitization via down-regulating MGMT and p- RELA in glioma. Am J Transl Res 2021; 13:11413-11426. [PMID: 34786068 PMCID: PMC8581860] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
Temozolomide (TMZ), one of the few effective drugs used during adjuvant therapy, could effectively prolong the overall survival (OS) of glioma patients. In our previous study, the mRNA level of G Protein Subunit Alpha 13 (GNA13) was found to be inversely correlated with OS and was therefore identified as a potential biomarker for the prognosis of glioma. Henceforth, this study aims to identify the molecular mechanism of GNA13 in enhancing TMZ sensitization through bioinformatic analyses of GSE80729 and GSE43452 and other experiments. In glioma, overexpression of GNA13 downregulated PRKACA, which is a subunit of PKA, hence reducing phosphorylated RELA and MGMT. Since p-RELA and MGMT were proven to be closely associated with TMZ resistance, we therefore investigated whether thetwo signaling pathways, "GNA13/PRKACA/p-RELA", and "GNA13/PRKACA/MGMT", were involved in the molecular mechanism of GNA13 in TMZ sensitization. Our conclusion was that, GNA13 overexpression in glioma cells were more sensitive in TMZ treatment.
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Affiliation(s)
- Yan Liu
- Department of Neurosurgery, Shantou Central HospitalShantou 515041, China
| | - Zepeng Du
- Department of Pathology, Shantou Central HospitalShantou 515041, China
| | - Zhennan Xu
- Department of Neurosurgery, Shantou Central HospitalShantou 515041, China
| | - Tao Jin
- Department of Neurosurgery, Shantou Central HospitalShantou 515041, China
| | - Ke Xu
- Department of Neurosurgery, Shantou Central HospitalShantou 515041, China
| | - Meihui Huang
- Department of Pathology, Shantou Central HospitalShantou 515041, China
| | - Shaohong Wang
- Department of Pathology, Shantou Central HospitalShantou 515041, China
| | - Yuyu Zheng
- Department of Pathology, Shantou Central HospitalShantou 515041, China
| | - Mingfa Liu
- Department of Neurosurgery, Shantou Central HospitalShantou 515041, China
| | - Haixiong Xu
- Department of Neurosurgery, Shantou Central HospitalShantou 515041, China
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Mahajan S, Nambirajan A, Sharma A, Suri V, Sardana H, Phalak M, Garg A, Sharma MC. Ependymosarcoma harboring C11orf95: RELA fusion transcript: Report of two cases and review of the literature. Neuropathology 2021; 41:412-421. [PMID: 34558124 DOI: 10.1111/neup.12770] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/23/2021] [Accepted: 06/25/2021] [Indexed: 11/27/2022]
Abstract
Ependymoma is a relatively rare glial tumor of the central nervous system that arise from the cells lining the ventricles and central canal of the spinal cord. Ependymosarcoma (ES) is a newly introduced tumor entity of uncertain prognosis characterized by a rare phenomenon of a malignant mesenchymal transition arising within an ependymoma. ESs are surgically challenging tumors for diagnosis and therapy with a high incidence of morbidity and mortality. Here, we report two diagnostically challenging cases of primary ES in a 25-year-old female and a 17-year-old male. Both the cases presented with progressive and sequential neurological deficits over a period of five to eight months, and histological examination revealed a biphasic gliomesenchymal architecture comprised of anaplastic ependymomatous and sarcomatous components. Molecular genetic analysis revealed the presence of type 1 C11orf95:RELA fusion transcript. To date, 22 cases of ES have been reported in the literature, and only one case harbored type 1 C11orf95:RELA fusion transcript.
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Affiliation(s)
- Swati Mahajan
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Aruna Nambirajan
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Agrima Sharma
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Vaishali Suri
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Hardik Sardana
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | - Manoj Phalak
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | - Ajay Garg
- Department of Neuroradiology, All India Institute of Medical Sciences, New Delhi, India
| | - Mehar C Sharma
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
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31
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Li D, Wang T, Yu Z, Zhang Y, Wu X, Zheng N, Zhang W, Wu L. MiR-519d-5p modulates the sensitivity of breast cancer to chemotherapy by forming a negative feedback loop with RELA. Ann Transl Med 2021; 9:1171. [PMID: 34430612 PMCID: PMC8350717 DOI: 10.21037/atm-21-3241] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 07/15/2021] [Indexed: 11/06/2022]
Abstract
Background The chemoresistance of breast cancer (BC) has become the main cause of treatment failure. MicroRNAs (miRNAs) play a critical role in tumorigenesis, development, and chemoresistance, but the underlying mechanism of miR-519d in BC development and chemotherapy sensitivity remains to be elucidated. Methods The levels of miR-519d-5p in BC samples and cell lines were measured by quantitative reverse transcription polymerase chain reaction (RT-qPCR). Cell viability was monitored by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. The in vivo effect of miR-519d-5p on tumor formation and doxorubicin response were investigated in a xenograft study. Bioinformatic analysis, luciferase reporter assay, RT-qPCR, and western blotting were conducted to validate RELA as a target gene of miR-519d-5p. We performed RT-qPCR, western blotting, chromatin immunoprecipitation (ChIP), and DNA pull down to verify miR-519d-5p as a transcriptional target of RELA. Results This study found that miR-519d-5p was expressed at lower levels in BC cells and tissues, and overexpression of miR-519d-5p sensitized BC to chemotherapy both in vitro and in vivo. Meanwhile, the expression of RELA was negatively correlated with miR-519d-5p. We then showed that RELA is one of the targets of miR-519d-5p: miR-519d-5p inhibited RELA expression by directly binding to its 3'-unstranslated region (3'-UTR). Conversely, it was verified that miR-519d-5p is one of the targets of transcription factor RELA, and RELA repressed miR-519d-5p by binding to the promoter region of miR-519d-5p, which forms a feedback loop. Conclusions Overall, the results provide a novel therapeutic strategy for the combinational use of miR-519d-5p and chemotherapeutic agents to overcome chemo-resistance by forming a negative feedback loop with RELA.
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Affiliation(s)
- Ding Li
- Department of Pharmacy, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China.,Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Tingting Wang
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Zelei Yu
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Yi Zhang
- Beijing University of Chinese Medicine Affiliated Xiamen Hospital, Xiamen, China
| | - Xuan Wu
- Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Ning Zheng
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, China
| | - Wenzhou Zhang
- Department of Pharmacy, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
| | - Lixian Wu
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, China.,Institute of Materia Medica, Fujian Medical University, Fuzhou, China.,Fujian Key Laboratory of Natural Medicine Pharmacology, Fujian Medical University, Fuzhou, China
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32
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Tauziède-Espariat A, Siegfried A, Nicaise Y, Kergrohen T, Sievers P, Vasiljevic A, Roux A, Dezamis E, Benevello C, Machet MC, Michalak S, Puiseux C, Llamas-Gutierrez F, Leblond P, Bourdeaut F, Grill J, Dufour C, Guerrini-Rousseau L, Abbou S, Dangouloff-Ros V, Boddaert N, Saffroy R, Hasty L, Wahler E, Pagès M, Andreiuolo F, Lechapt E, Chrétien F, Blauwblomme T, Beccaria K, Pallud J, Puget S, Uro-Coste E, Varlet P. Supratentorial non- RELA, ZFTA-fused ependymomas: a comprehensive phenotype genotype correlation highlighting the number of zinc fingers in ZFTA-NCOA1/2 fusions. Acta Neuropathol Commun 2021; 9:135. [PMID: 34389065 PMCID: PMC8362233 DOI: 10.1186/s40478-021-01238-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 08/05/2021] [Indexed: 12/11/2022] Open
Abstract
The cIMPACT-NOW Update 7 has replaced the WHO nosology of “ependymoma, RELA fusion positive” by “Supratentorial-ependymoma, C11orf95-fusion positive”. This modification reinforces the idea that supratentorial-ependymomas exhibiting fusion that implicates the C11orf95 (now called ZFTA) gene with or without the RELA gene, represent the same histomolecular entity. A hot off the press molecular study has identified distinct clusters of the DNA methylation class of ZFTA fusion-positive tumors. Interestingly, clusters 2 and 4 comprised tumors of different morphologies, with various ZFTA fusions without involvement of RELA. In this paper, we present a detailed series of thirteen cases of non-RELA ZFTA-fused supratentorial tumors with extensive clinical, radiological, histopathological, immunohistochemical, genetic and epigenetic (DNA methylation profiling) characterization. Contrary to the age of onset and MRI aspects similar to RELA fusion-positive EPN, we noted significant histopathological heterogeneity (pleomorphic xanthoastrocytoma-like, astroblastoma-like, ependymoma-like, and even sarcoma-like patterns) in this cohort. Immunophenotypically, these NFκB immunonegative tumors expressed GFAP variably, but EMA constantly and L1CAM frequently. Different gene partners were fused with ZFTA: NCOA1/2, MAML2 and for the first time MN1. These tumors had epigenetic homologies within the DNA methylation class of ependymomas-RELA and were classified as satellite clusters 2 and 4. Cluster 2 (n = 9) corresponded to tumors with classic ependymal histological features (n = 4) but also had astroblastic features (n = 5). Various types of ZFTA fusions were associated with cluster 2, but as in the original report, ZFTA:MAML2 fusion was frequent. Cluster 4 was enriched with sarcoma-like tumors. Moreover, we reported a novel anatomy of three ZFTA:NCOA1/2 fusions with only 1 ZFTA zinc finger domain in the putative fusion protein, whereas all previously reported non-RELA ZFTA fusions have 4 ZFTA zinc fingers. All three cases presented a sarcoma-like morphology. This genotype/phenotype association requires further studies for confirmation. Our series is the first to extensively characterize this new subset of supratentorial ZFTA-fused ependymomas and highlights the usefulness of ZFTA FISH analysis to confirm the existence of a rearrangement without RELA abnormality.
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33
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Mazarei M, Mohammadi Arvejeh P, Mozafari MR, Khosravian P, Ghasemi S. Anticancer Potential of Temozolomide-Loaded Eudragit-Chitosan Coated Selenium Nanoparticles: In Vitro Evaluation of Cytotoxicity, Apoptosis and Gene Regulation. Nanomaterials (Basel) 2021; 11:1704. [PMID: 34209471 PMCID: PMC8308158 DOI: 10.3390/nano11071704] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 12/27/2022]
Abstract
Resistance to temozolomide (TMZ) is the main cause of death in glioblastoma multiforme (GBM). The use of nanocarriers for drug delivery applications is one of the known approaches to overcome drug resistance. This study aimed to investigate the possible effect of selenium-chitosan nanoparticles loaded with TMZ on the efficacy of TMZ on the expression of MGMT, E2F6, and RELA genes and the rate of apoptosis in the C6 cell line. Selenium nanoparticles (SNPs) were loaded with TMZ and then they were coated by Eudragit® RS100 (Eud) and chitosan (CS) to prepare Se@TMZ/Eud-Cs. Physicochemical properties were determined by scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDAX), thermal gravimetric analysis (TGA), Fourier-transform infrared spectroscopy (FTIR), and dynamic light scattering (DLS) methods. Se@TMZ/Eud-Cs was evaluated for loading and release of TMZ by spectrophotometric method. Subsequently, SNPs loaded with curcumin (as a fluorophore) were analyzed for in vitro uptake by C6 cells. Cytotoxicity and apoptosis assay were measured by MTT assay and Annexin-PI methods. Finally, real-time PCR was utilized to determine the expression of MGMT, E2F6, and RELA genes. Se@TMZ/Eud-Cs was prepared with an average size of 200 nm as confirmed by the DLS and microscopical methods. Se@TMZ/Eud-Cs presented 82.77 ± 5.30 loading efficiency with slow and pH-sensitive release kinetics. SNPs loaded with curcumin showed a better uptake performance by C6 cells compared with free curcumin (p-value < 0.01). Coated nanoparticles loaded with TMZ showed higher cytotoxicity, apoptosis (p-value < 0.0001), and down-regulation of MGMT, E2F6, and RELA and lower IC50 value (p-value < 0.0001) than free TMZ and control (p-value < 0.0001) groups. Using Cs as a targeting agent in Se@TMZ/Eud-Cs system improved the possibility for targeted drug delivery to C6 cells. This drug delivery system enhanced the apoptosis rate and decreased the expression of genes related to TMZ resistance. In conclusion, Se@TMZ/Eud-Cs may be an option for the enhancement of TMZ efficiency in GBM treatment.
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Affiliation(s)
- Madineh Mazarei
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord 88157-13471, Iran; (M.M.); (P.M.A.)
| | - Pooria Mohammadi Arvejeh
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord 88157-13471, Iran; (M.M.); (P.M.A.)
| | - M. R. Mozafari
- Supreme NanoBiotics Co. Ltd. and Supreme Pharmatech Co. Ltd., 399/90-95 Moo 13 Kingkaew Rd. Soi 25/1, T. Rachateva, A. Bangplee, Samutprakan 10540, Thailand;
- Australasian Nanoscience and Nanotechnology Initiative (ANNI), Monash University LPO, Clayton 3168, Australia
| | - Pegah Khosravian
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord 88157-13471, Iran
| | - Sorayya Ghasemi
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord 88157-13471, Iran; (M.M.); (P.M.A.)
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Salunkhe S, Mishra SV, Nair J, Shah S, Gardi N, Thorat R, Sarkar D, Rajendra J, Kaur E, Dutt S. Nuclear localization of p65 reverses therapy-induced senescence. J Cell Sci 2021; 134:jcs.253203. [PMID: 33526713 DOI: 10.1242/jcs.253203] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 01/21/2021] [Indexed: 01/07/2023] Open
Abstract
Senescence is the arrest of cell proliferation and is a tumor suppressor phenomenon. In a previous study, we have shown that therapy-induced senescence of glioblastoma multiforme (GBM) cells can prevent relapse of GBM tumors. Here, we demonstrate that ciprofloxacin-induced senescence in glioma-derived cell lines and primary glioma cultures is defined by SA-β-gal positivity, a senescence-associated secretory phenotype (SASP), a giant cell (GC) phenotype, increased levels of reactive oxygen species (ROS), γ-H2AX and a senescence-associated gene expression signature, and has three stages of senescence -initiation, pseudo-senescence and permanent senescence. Ciprofloxacin withdrawal during initiation and pseudo-senescence reinitiated proliferation in vitro and tumor formation in vivo Importantly, prolonged treatment with ciprofloxacin induced permanent senescence that failed to reverse following ciprofloxacin withdrawal. RNA-seq revealed downregulation of the p65 (RELA) transcription network, as well as incremental expression of SMAD pathway genes from initiation to permanent senescence. Ciprofloxacin withdrawal during initiation and pseudo-senescence, but not permanent senescence, increased the nuclear localization of p65 and escape from ciprofloxacin-induced senescence. By contrast, permanently senescent cells showed loss of nuclear p65 and increased apoptosis. Pharmacological inhibition or genetic knockdown of p65 upheld senescence in vitro and inhibited tumor formation in vivo Our study demonstrates that levels of nuclear p65 define the window of reversibility of therapy-induced senescence and that permanent senescence can be induced in GBM cells when the use of senotherapeutics is coupled with p65 inhibitors.
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Affiliation(s)
- Sameer Salunkhe
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Kharghar, Navi Mumbai, Maharashtra 410210, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Saket V Mishra
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Kharghar, Navi Mumbai, Maharashtra 410210, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Jyothi Nair
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Kharghar, Navi Mumbai, Maharashtra 410210, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Sanket Shah
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Kharghar, Navi Mumbai, Maharashtra 410210, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Nilesh Gardi
- Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India.,Department of Medical Oncology, Tata Memorial Hospital, Tata Memorial Centre, Navi Mumbai, Maharashtra 410210, India
| | - Rahul Thorat
- Laboratory Animal Facility, Advanced Centre for Treatment, Research and Education in Cancer Kharghar, Navi Mumbai, Maharashtra 410210, India
| | - Debashmita Sarkar
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Kharghar, Navi Mumbai, Maharashtra 410210, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Jacinth Rajendra
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Kharghar, Navi Mumbai, Maharashtra 410210, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Ekjot Kaur
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Kharghar, Navi Mumbai, Maharashtra 410210, India.,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Shilpee Dutt
- Shilpee Dutt Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Kharghar, Navi Mumbai, Maharashtra 410210, India .,Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400 094, India
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35
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Tomomasa R, Arai Y, Kawabata-Iwakawa R, Fukuoka K, Nakano Y, Hama N, Nakata S, Suzuki N, Ishi Y, Tanaka S, Takahashi JA, Yuba Y, Shiota M, Natsume A, Kurimoto M, Shiba Y, Aoki M, Nabeshima K, Enomoto T, Inoue T, Fujimura J, Kondo A, Yao T, Okura N, Hirose T, Sasaki A, Nishiyama M, Ichimura K, Shibata T, Hirato J, Yokoo H, Nobusawa S. Ependymoma-like tumor with mesenchymal differentiation harboring C11orf95-NCOA1/2 or - RELA fusion: A hitherto unclassified tumor related to ependymoma. Brain Pathol 2021; 31:e12943. [PMID: 33576087 PMCID: PMC8412126 DOI: 10.1111/bpa.12943] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/15/2021] [Accepted: 01/18/2021] [Indexed: 12/14/2022] Open
Abstract
Recurrent fusion genes involving C11orf95, C11orf95‐RELA, have been identified only in supratentorial ependymomas among primary CNS tumors. Here, we report hitherto histopathologically unclassifiable high‐grade tumors, under the tentative label of “ependymoma‐like tumors with mesenchymal differentiation (ELTMDs),” harboring C11orf95‐NCOA1/2 or ‐RELA fusion. We examined the clinicopathological and molecular features in five cases of ELTMDs. Except for one adult case (50 years old), all cases were in children ranging from 1 to 2.5 years old. All patients presented with a mass lesion in the cerebral hemisphere. Histologically, all cases demonstrated a similar histology with a mixture of components. The major components were embryonal‐appearing components forming well‐delineated tumor cell nests composed of small uniform cells with high proliferative activity, and spindle‐cell mesenchymal components with a low‐ to high‐grade sarcoma‐like appearance. The embryonal‐appearing components exhibited minimal ependymal differentiation including a characteristic EMA positivity and tubular structures, but histologically did not fit with ependymoma because they lacked perivascular pseudorosettes, a histological hallmark of ependymoma, formed well‐delineated nests, and had diffuse and strong staining for CAM5.2. Molecular analysis identified C11orf95‐NCOA1, ‐NCOA2, and ‐RELA in two, one, and two cases, respectively. t‐distributed stochastic neighbor embedding analysis of DNA methylation data from two cases with C11orf95‐NCOA1 or ‐NCOA2 and a reference set of 380 CNS tumors revealed that these two cases were clustered together and were distinct from all subgroups of ependymomas. In conclusion, although ELTMDs exhibited morphological and genetic associations with supratentorial ependymoma with C11orf95‐RELA, they cannot be regarded as ependymoma. Further analyses of more cases are needed to clarify their differences and similarities.
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Affiliation(s)
- Ran Tomomasa
- Department of Human Pathology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yasuhito Arai
- Division of Cancer Genomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Reika Kawabata-Iwakawa
- Division of Integrated Oncology Research, Gunma University Initiative for Advanced Research, Maebashi, Japan
| | - Kohei Fukuoka
- Department of Hematology/Oncology, Saitama Children's Medical Center, Saitama, Japan
| | - Yoshiko Nakano
- Division of Brain Tumor Translational Research, National Cancer Center Research Institute, Tokyo, Japan
| | - Natsuko Hama
- Division of Cancer Genomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Satoshi Nakata
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Nozomi Suzuki
- Department of Neurosurgery, Kitami Red Cross Hospital, Kitami, Japan
| | - Yukitomo Ishi
- Department of Neurosurgery, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - Shinya Tanaka
- Department of Cancer Pathology, Faculty of Medicine, and WPI-ICReDD, Hokkaido University, Sapporo, Japan
| | - Jun A Takahashi
- Department of Rehabilitation Medicine, Rakusai Shimizu Hospital, Kyoto, Japan
| | - Yoshiaki Yuba
- Department of Pathology, Kitano Hospital, the Tazuke Kofukai Medical Research Institute, Osaka, Japan
| | - Mitsutaka Shiota
- Department of Pediatrics, Kitano Hospital, the Tazuke Kofukai Medical Research Institute, Osaka, Japan
| | - Atsushi Natsume
- Department of Neurosurgery, Nagoya University School of Medicine, Nagoya, Japan
| | - Michihiro Kurimoto
- Department of Neurosurgery, Nagoya University School of Medicine, Nagoya, Japan
| | - Yoshiki Shiba
- Department of Neurosurgery, Nagoya University School of Medicine, Nagoya, Japan
| | - Mikiko Aoki
- Department of Pathology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - Kazuki Nabeshima
- Department of Pathology, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - Toshiyuki Enomoto
- Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - Tooru Inoue
- Department of Neurosurgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - Junya Fujimura
- Department of Pediatrics and Adolescent Medicine, Juntendo University School of Medicine, Tokyo, Japan
| | - Akihide Kondo
- Department of Neurosurgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Takashi Yao
- Department of Human Pathology, Juntendo University School of Medicine, Tokyo, Japan
| | - Naoki Okura
- Department of Radiology, School of Medicine, International University of Health and Welfare, Narita, Japan
| | - Takanori Hirose
- Pathology for Regional Communication, Kobe University School of Medicine, Kobe, Japan.,Department of Diagnostic Pathology, Hyogo Cancer Center, Akashi, Japan
| | - Atsushi Sasaki
- Department of Pathology, Saitama Medical University School of Medicine, Moroyama, Japan
| | - Masahiko Nishiyama
- Higashi Sapporo Hospital, Sapporo, Japan.,Gunma University, Maebashi, Gunma, Japan
| | - Koichi Ichimura
- Division of Brain Tumor Translational Research, National Cancer Center Research Institute, Tokyo, Japan
| | - Tatsuhiro Shibata
- Division of Cancer Genomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Junko Hirato
- Department of Human Pathology, Gunma University Graduate School of Medicine, Maebashi, Japan.,Department of Pathology, Public Tomioka General Hospital, Tomioka, Japan
| | - Hideaki Yokoo
- Department of Human Pathology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Sumihito Nobusawa
- Department of Human Pathology, Gunma University Graduate School of Medicine, Maebashi, Japan
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Jiao Y, Zhao D, Gao F, Hu X, Hu X, Li M, Cui Y, Wei X, Xie C, Zhao Y, Gao Y. MicroRNA-520c-3p suppresses vascular endothelium dysfunction by targeting RELA and regulating the AKT and NF-κB signaling pathways. J Physiol Biochem 2021; 77:47-61. [PMID: 33411212 DOI: 10.1007/s13105-020-00779-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Accepted: 12/04/2020] [Indexed: 12/13/2022]
Abstract
Endothelial injury, which can cause endothelial inflammation and dysfunction, is an important mechanism for the development of atherosclerotic plaque. This study aims to investigate the functional role of miR-520c-3p in vascular endothelium during inflammatory diseases such as atherosclerosis. Quantitative real-time PCR was used to detect miR-520c-3p expression in in human umbilical vein endothelial cells (HUVECs) after treatment with platelet-derived growth factor (PDGF). Furthermore, the effects of miR-520c-3p overexpression and silencing on cell proliferation, adhesion, and apoptosis were assessed. Bioinformatics analysis and Biotin-labeled miRNA pull-down assay were used to confirm the targets of miR-520-3p. Then, the effects of miR-520c-3p on AKT and NF-κB signaling pathways were detected by western blot. Herein, we observed that the expression level of miR-520c-3p was downregulated in HUVECs under PDGF stimulation. Overexpression of miR-520c-3p not only decreased cell adhesion but also promoted proliferation and inhibited apoptosis to protect the viability of endothelial cells. It was confirmed that RELA is the target of miR-520c-3p. MiR-520c-3p inhibited the protein phosphorylation of AKT and RELA, and si-RELA reversed the promotion of AKT and RELA protein phosphorylation by anti-miR-520c-3p. In summary, our study suggested that miRNA-520c-3p targeting RELA through AKT and NF-κB signaling pathways regulated the proliferation, apoptosis, and adhesion of vascular endothelial cells. We conclude that miR-520c-3p may play an important role in the suppression of endothelial injury, which could serve as a biomarker and therapeutic target for atherosclerosis.
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Affiliation(s)
- Yan Jiao
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Dandan Zhao
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Fuhua Gao
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Xiaoyan Hu
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Xinxin Hu
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Mei Li
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Ying Cui
- Liaoning Provincial Core Lab of Medical Molecular Biology, Dalian Medical University, Dalian, China
- Molecular Medicine Laboratory, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Xiaoqing Wei
- Liaoning Provincial Core Lab of Medical Molecular Biology, Dalian Medical University, Dalian, China
- Molecular Medicine Laboratory, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Ce Xie
- Liaoning Provincial Core Lab of Medical Molecular Biology, Dalian Medical University, Dalian, China
- Molecular Medicine Laboratory, College of Basic Medical Sciences, Dalian Medical University, Dalian, China
| | - Ying Zhao
- Liaoning Provincial Core Lab of Medical Molecular Biology, Dalian Medical University, Dalian, China.
- Molecular Medicine Laboratory, College of Basic Medical Sciences, Dalian Medical University, Dalian, China.
| | - Ying Gao
- Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Dalian Medical University, Dalian, China.
- Liaoning Provincial Core Lab of Medical Molecular Biology, Dalian Medical University, Dalian, China.
- Molecular Medicine Laboratory, College of Basic Medical Sciences, Dalian Medical University, Dalian, China.
- Liaoning Provincial Core Lab of Medical Molecular Biology, Dalian Medical University, No.9 West Section Lvshun South Road, Dalian, 116044, Liaoning Province, China.
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Wu M, Zhang Y. MiR-182 inhibits proliferation, migration, invasion and inflammation of endometrial stromal cells through deactivation of NF-κB signaling pathway in endometriosis. Mol Cell Biochem 2021; 476:1575-88. [PMID: 33400022 DOI: 10.1007/s11010-020-03986-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Accepted: 11/16/2020] [Indexed: 12/14/2022]
Abstract
Endometriosis affects about 10-15% women for reproductive age, but it is not currently curable and the underlying etiology for this disease is still not clear. In the present study, functions and mechanisms of miR-182 and RELA in endometriosis were investigated. BAY 11-7082 was used to block NF-κB pathway. qRT-PCR, ELISA and western blot assays were employed to evaluate the expressions of miR-182 and RELA, inflammatory factors and epithelial-mesenchymal transition (EMT)-related markers, and activation of NF-κB pathway. MTT, wound healing or Transwell assays were used to evaluate the cell proliferation, migration and invasion capacities. Bioinformatic and dual-luciferase reporter assays were carried out to analyze the interaction between miR-182 and RELA. MiR-182 expression was decreased, while RELA was increased as developed from normal to eutopic and ectopic status, which was accompanied by upregulated inflammatory factors and EMT-related proteins. RELA was directly targeted by miR-182 in human endometrial stromal cells. Overexpression of RELA increased inflammation-associated and EMT-related markers expression, while miR-182 upregulation decreased the expression of these genes in a dose-dependent manner, which finally attenuated the proliferation, migration and invasion capacities of endometrial stromal cells through deactivation of NF-κB signaling pathway. Moreover, co-overexpression of RELA reversed the above effects induced by miR-182. In a word, miR-182 directly targeted RELA and inhibited proliferation, migration, invasion, EMT and inflammation of endometrial stromal cells through deactivation of NF-κB signaling pathway in endometriosis. These results provide new insights into the interaction between miR-182 and NF-κB pathway and their potential as therapeutic targets for treatment of endometriosis.
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Takadera M, Satomi K, Szulzewsky F, Cimino PJ, Holland EC, Yamamoto T, Ichimura K, Ozawa T. Phenotypic characterization with somatic genome editing and gene transfer reveals the diverse oncogenicity of ependymoma fusion genes. Acta Neuropathol Commun 2020; 8:203. [PMID: 33228790 PMCID: PMC7684901 DOI: 10.1186/s40478-020-01080-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 11/11/2020] [Indexed: 11/10/2022] Open
Abstract
Recurrent RELA and YAP1 fusions are intimately associated with tumorigenesis in supratentorial ependymomas. Chromothripsis and focal copy number alterations involving 11q are hallmarks of these tumors. However, it is unknown whether the chromosomal alterations are a direct causal event resulting in fusion transcripts. In addition, the biological significance of the RELA fusion variants and YAP1 fusions is not yet fully characterized. In this study, we generated gene rearrangements on 11q with the CRISPR/Cas9 system and investigated the formation of oncogenic ependymoma fusion genes. Further, we examined the oncogenic potential of RELA fusion variants and YAP1 fusions in a lentiviral gene transfer model. We observed that endogenous RELA fusion events were successfully induced by CRISPR/Cas9-mediated genome rearrangement in cultured cells. In vivo genome editing in mouse brain resulted in the development of ependymoma-like brain tumors that harbored the Rela fusion gene. All RELA fusion variants tested, except a variant lacking the Rel homology domain, were able to induce tumor formation, albeit with different efficacy. Furthermore, expression of YAP1-FAM118B and YAP1-MAMLD1 fusions induced the formation of spindle-cell-like tumors at varying efficacy. Our results indicate that chromosomal rearrangements involving the Rela locus are the causal event for the formation of Rela fusion-driven ependymomas in mice. Furthermore, the type of RELA. fusion might affect the aggressiveness of tumors and that the Rel homology domain is essential for the oncogenic functions of RELA. fusions. The YAP1 fusion genes are also oncogenic when expressed in mice.
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Perazzio SF, Allenspach EJ, Eklund KK, Varjosalo M, Shinohara MM, Torgerson TR, Seppänen MRJ. Behçet disease (BD) and BD-like clinical phenotypes: NF-κB pathway in mucosal ulcerating diseases. Scand J Immunol 2020; 92:e12973. [PMID: 32889730 DOI: 10.1111/sji.12973] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 08/08/2020] [Accepted: 08/30/2020] [Indexed: 02/06/2023]
Abstract
Behçet's disease (BD) is a heterogeneous multi-organ disorder in search of a unified pathophysiological theory and classification. The disease frequently has overlapping features resembling other disease clusters, such as vasculitides, spondyloarthritides and thrombophilias with similar genetic risk variants, namely HLA-B*51, ERAP1, IL-10, IL-23R. Many of the BD manifestations, such as unprovoked recurrent episodes of inflammation and increased expression of IL-1, IL-6 and TNFα, overlap with those of the hereditary monogenic autoinflammatory syndromes, positioning BD at the crossroads between autoimmune and autoinflammatory syndromes. BD-like disease associates with various inborn errors of immunity, including familial Mediterranean fever, conditions related to dysregulated NF-κB activation (eg TNFAIP3, NFKB1, OTULIN, RELA, IKBKG) and either constitutional trisomy 8 or acquired trisomy 8 in myelodysplastic syndromes. We review here the recent advances in the immunopathology of BD, BD-like diseases and the NF-κB pathway suggesting new elements in the elusive BD etiopathogenesis.
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Affiliation(s)
- Sandro F Perazzio
- Seattle Children's Research Institute, University of Washington and Center for Immunity and Immunotherapies, Seattle, WA, USA.,Division of Rheumatology, Federal University of Sao Paulo, Sao Paulo, Brazil
| | - Eric J Allenspach
- Seattle Children's Research Institute, University of Washington and Center for Immunity and Immunotherapies, Seattle, WA, USA
| | - Kari K Eklund
- Division of Rheumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,ORTON Orthopaedic Hospital of the Orton Foundation, Helsinki, Finland
| | - Markku Varjosalo
- Division of Rheumatology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,ORTON Orthopaedic Hospital of the Orton Foundation, Helsinki, Finland.,Molecular Systems Biology Research Group and Proteomics Unit, Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Michi M Shinohara
- Divisions of Dermatology and Dermatopathology, University of Washington, Seattle, WA, USA
| | | | - Mikko R J Seppänen
- Rare Disease and Pediatric Research Centers, Hospital for Children and Adolescents and Adult Immunodeficiency Unit, Inflammation Center, University of Helsinki and HUS Helsinki University Hospital, Helsinki, Finland
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Wang Z, Sheng C, Kan G, Yao C, Geng R, Chen S. RNAi Screening Identifies that TEX10 Promotes the Proliferation of Colorectal Cancer Cells by Increasing NF- κB Activation. Adv Sci (Weinh) 2020; 7:2000593. [PMID: 32995120 PMCID: PMC7507032 DOI: 10.1002/advs.202000593] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 06/02/2020] [Indexed: 05/08/2023]
Abstract
Colorectal cancer (CRC) has become a predominant cancer worldwide. To understand the process of carcinogenesis, a short hairpin RNA library screening is employed to search for candidate genes that promote proliferation in the CRC cell line HT29. The candidate genes overlap with differentially expressed genes in 32 CRC tumor tissues in the GEO dataset GSE8671. The seventh-ranked testis expressed 10 (TEX10) is upregulated in CRC and its knockdown decreases cell proliferation. The TEX10 high-expression group exhibits worse overall survival (P = 0.003) and progression-free survival (P = 0.001) than the TEX10 low-expression group. TEX10 depletion decreases the growth of CRC cells in vitro and in vivo. Gene set enrichment analysis indicates that the nuclear factor-kappa B pathway is significantly enriched in the genes downregulated by TEX10 knockdown. Mechanistically, TEX10 interacts with RELA and increases its nuclear localization. TEX10 promotes RELA occupancy at gene promoters and regulates the expression of a subset of RELA-targeted genes, including TNFAIP8, SAT1, and IL6ST. Taken together, this study identifies that TEX10 promotes the proliferation of CRC cells in an RELA-dependent manner. In addition, high TEX10 expression is associated with poor prognosis in CRC patients.
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Affiliation(s)
- Ziyang Wang
- Sun Yat‐sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangzhouGuangdong510060P. R. China
| | - Chunjie Sheng
- Sun Yat‐sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangzhouGuangdong510060P. R. China
| | - Guangyan Kan
- Sun Yat‐sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangzhouGuangdong510060P. R. China
| | - Chen Yao
- Sun Yat‐sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangzhouGuangdong510060P. R. China
| | - Rong Geng
- Sun Yat‐sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangzhouGuangdong510060P. R. China
| | - Shuai Chen
- Sun Yat‐sen University Cancer CenterState Key Laboratory of Oncology in South ChinaCollaborative Innovation Center for Cancer MedicineGuangzhouGuangdong510060P. R. China
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41
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Nihous H, Macagno N, Baud-Massière J, Haffner A, Jouve JL, Gentet JC, Touzery C, Le Loarer F, Bouvier C. Genetic variant of SRF-rearranged myofibroma with a misleading nuclear expression of STAT6 and STAT6 involvement as 3' fusion partner. Virchows Arch 2020; 478:597-603. [PMID: 32529351 DOI: 10.1007/s00428-020-02859-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 05/04/2020] [Accepted: 05/28/2020] [Indexed: 11/28/2022]
Abstract
Pediatric neoplasms with a myofibroblastic differentiation are frequent in children, in particular myofibroma. Recently, a novel deep soft tissue myofibroblastic neoplasm has been described with high cellularity, a smooth muscle phenotype and SRF-RELA fusion. We report the case of a 15-year-old boy who presented with a tumor of the deep soft tissue of the arm, with overlapping histological features with the recently described SRF-RELA group of myofibromas but differing by the presence of calcifications, a novel SRF-STAT6 fusion transcript and nuclear expression of STAT6. No local recurrence nor distant metastasis was detected at the current follow-up of 29 months. The clinical relevance of this novel fusion requires further investigations.
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Affiliation(s)
- Hugo Nihous
- Department of Pathology, INSERM, MMG, APHM, CHU Timone, Aix Marseille University, Marseille, France
| | - Nicolas Macagno
- Department of Pathology, INSERM, MMG, APHM, CHU Timone, Aix Marseille University, Marseille, France
| | | | - Aurélie Haffner
- Department of Pathology, INSERM, MMG, APHM, CHU Timone, Aix Marseille University, Marseille, France
| | - Jean-Luc Jouve
- Department of Pediatric orthopedic, APHM, La Timone Children's Hospital, Marseille, France
| | - Jean-Claude Gentet
- Department of Pediatric Hematology and Oncology, APHM, La Timone Children's Hospital, Marseille, France
| | - Camille Touzery
- Department of Radiology, APHM, Hopital Nord, Marseille, France
| | | | - Corinne Bouvier
- Department of Pathology, INSERM, MMG, APHM, CHU Timone, Aix Marseille University, Marseille, France. .,Service d'Anatomie & Cytologie Pathologiques, Neuropathologie, CHU Timone, Rue Saint-Pierre, 13005, Marseille, France.
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42
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Caruana BT, Byrne FL. The NF-κB signalling pathway regulates GLUT6 expression in endometrial cancer. Cell Signal 2020; 73:109688. [PMID: 32512041 DOI: 10.1016/j.cellsig.2020.109688] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 05/19/2020] [Accepted: 05/31/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Gene and protein expression of the glucose transporter GLUT6 are elevated in multiple cancers, including endometrial cancer. However, the extrinsic and intrinsic mechanisms that regulate GLUT6 expression in this malignancy are unknown. Herein we investigate the potential mechanisms regulating GLUT6 expression in endometrial cancer. METHODS Data mining of the GLUT6 gene (SLC2A6) in The Cancer Genome Atlas (TCGA) PanCan datasets was performed in cBioPortal. A transcriptome PCR array was used to identify regulators of GLUT6 expression. The role of RELA in regulating GLUT6 gene and protein expression was investigated by overexpressing constitutively active and dominant-negative RELA in endometrial cells. Endometrial cells were treated with the pro-inflammatory cytokine TNFα and the expression of RELA, IκBα, TNFα, and GLUT6 were examined by Western blotting and RT-qPCR. RESULTS GLUT6 is altered in 1% of all cancer samples (157 of 10, 967 samples) within TCGA datasets including 4.7% of uterine (endometrial) cancers. GLUT6 expression was positively co-expressed with multiple members of the NF-κB signalling pathway including NFKB2, RELB, NFKBIE, and TNF in endometrial cancer samples. A transcriptome PCR array identified RELA as the top potential transcriptional regulator of GLUT6 expression. Overexpression of constitutively active RELA increased GLUT6 gene expression in normal endometrial epithelial cells (hUE-Ts), while overexpression of dominant-negative RELA decreased GLUT6 expression in cancerous RL95-2 endometrial cells. TNFα treatment activated canonical NF-κB signalling and increased the expression of GLUT6, but not that of other glucose transporters (GLUTs 1, 3, 4, 8, 10, or 12) in endometrial cells. CONCLUSIONS TNFα is a cytokine that is commonly increased in obesity-related endometrial cancer and the findings herein support a potential mechanism whereby TNFα may contribute to endometrial cancer initiation or progression by increasing GLUT6 expression. Furthermore, we identified RELA, an important downstream mediator of the TNFα signalling cascade, as a regulator of GLUT6 expression in endometrial cells. Future studies are warranted to determine how GLUT6 expression affects endometrial tumourigenesis or cancer progression.
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Affiliation(s)
- Beth T Caruana
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Frances L Byrne
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia.
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Li D, Yu Z, Wang T, Li Y, Chen X, Wu L. The role of the novel LincRNA uc002jit.1 in NF-kB-mediated DNA damage repair in acute myeloid leukemia cells. Exp Cell Res 2020; 391:111985. [PMID: 32259522 DOI: 10.1016/j.yexcr.2020.111985] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 03/26/2020] [Accepted: 03/28/2020] [Indexed: 01/07/2023]
Abstract
The roles and therapeutic potential of long noncoding RNAs (lncRNAs) in acute myeloid leukemia (AML) have attracted increased attention. However, many lncRNAs have not been annotated in AML, and their predictive value for AML therapy remains unclear. In this study, we identified a novel large intergenic noncoding RNA uc002jit.1 (D43770) from a lncRNA microarray. We first proved uc002jit.1 is a target gene of nuclear factor kappa B/RELA, RELA regulated uc002jit.1 transcription by binding to its promoter. Additionally, uc002jit.1 knockdown impaired the stability of poly (ADP-ribose) polymerase 1 (PARP1) mRNA, and then reduced PARP1 protein content and PARylation level upon DNA damage, thus inhibiting DNA damage repair in AML cells. Moreover, uc002jit.1 knockdown significantly inhibited AML cells proliferation and increased the sensitivity to chemotherapeutic drugs in vitro as well as in a mouse model in vivo. Overall, our study indicated that uc002jit.1 may be associated with the occurrence and prognosis of AML and could be a new diagnostic/prognostic biomarker and therapeutic target for AML.
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Affiliation(s)
- Ding Li
- The Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, 450008, PR China; Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, 350108, PR China
| | - Zelei Yu
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, 350108, PR China
| | - Tingting Wang
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, 350108, PR China
| | - Yi Li
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, PR China
| | - Xianling Chen
- Fujian Institute of Hematology, Union Hospital, Fuzhou, 350001, PR China
| | - Lixian Wu
- Department of Pharmacology, School of Pharmacy, Fujian Medical University, Fuzhou, 350108, PR China; Institute of Materia Medicine, Fuzhou, 350108, PR China; Fuijan Key Laboratory of Natural Medicine Pharmacology, Fuzhou, 350108, PR China.
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44
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Webb WM, Irwin AB, Pepin ME, Henderson BW, Huang V, Butler AA, Herskowitz JH, Wende AR, Cash AE, Lubin FD. The SETD6 Methyltransferase Plays an Essential Role in Hippocampus-Dependent Memory Formation. Biol Psychiatry 2020; 87:577-587. [PMID: 31378303 PMCID: PMC6906268 DOI: 10.1016/j.biopsych.2019.05.022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 12/03/2018] [Revised: 05/21/2019] [Accepted: 05/24/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND Epigenetic mechanisms are critical for hippocampus-dependent memory formation. Building on previous studies that implicate the N-lysine methyltransferase SETD6 in the activation of nuclear factor-κB RELA (also known as transcription factor p65) as an epigenetic recruiter, we hypothesized that SETD6 is a key player in the epigenetic control of long-term memory. METHODS Using a series of molecular, biochemical, imaging, electrophysiological, and behavioral experiments, we interrogated the effects of short interfering RNA-mediated knockdown of Setd6 in the rat dorsal hippocampus during memory consolidation. RESULTS Our findings demonstrate that SETD6 is necessary for memory-related nuclear factor-κB RELA methylation at lysine 310 and associated increases in H3K9me2 (histone H3 lysine 9 dimethylation) in the dorsal hippocampus and that SETD6 knockdown interferes with memory consolidation, alters gene expression patterns, and disrupts spine morphology. CONCLUSIONS Together, these findings suggest that SETD6 plays a critical role in memory formation and may act as an upstream initiator of H3K9me2 changes in the hippocampus during memory consolidation.
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Affiliation(s)
- William M Webb
- Department of Neurobiology, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Ashleigh B Irwin
- Department of Neurobiology, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Mark E Pepin
- Department of Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Benjamin W Henderson
- Department of Neurology, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Victoria Huang
- Department of Neurobiology, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Anderson A Butler
- Department of Neurobiology, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Jeremy H Herskowitz
- Department of Neurology, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Adam R Wende
- Department of Biomedical Engineering, The University of Alabama at Birmingham, Birmingham, Alabama; Department of Pathology, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Andrew E Cash
- Department of Neurobiology, The University of Alabama at Birmingham, Birmingham, Alabama
| | - Farah D Lubin
- Department of Neurobiology, The University of Alabama at Birmingham, Birmingham, Alabama.
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Neumann JE, Spohn M, Obrecht D, Mynarek M, Thomas C, Hasselblatt M, Dorostkar MM, Wefers AK, Frank S, Monoranu CM, Koch A, Witt H, Kool M, Pajtler KW, Rutkowski S, Glatzel M, Schüller U. Molecular characterization of histopathological ependymoma variants. Acta Neuropathol 2020; 139:305-18. [PMID: 31679042 DOI: 10.1007/s00401-019-02090-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 10/15/2019] [Accepted: 10/27/2019] [Indexed: 01/27/2023]
Abstract
According to the WHO classification, ependymal tumors are classified as subependymomas, myxopapillary ependymomas, classic ependymomas, anaplastic ependymomas, and RELA-fusion-positive ependymomas (RELA-EPN). Among classic ependymomas, the WHO defines rare histological variants, i.e., the clear cell, papillary, and tanycytic ependymoma. In parallel, global DNA methylation patterns distinguish nine molecular groups, some of which tightly overlap with histopathological subgroups. However, the match of the aforementioned histological variants to DNA methylation classes remains unclear. We analyzed histomorphology, clinical parameters, and global DNA methylation of tumors with the initial histological diagnoses of tanycytic (n = 12), clear cell (n = 14), or papillary ependymoma (n = 19). Forty percent of these tumors did not match to the epigenetic profile of ependymomas, using a previously published DNA methylation-based classifier for brain tumors. Instead, they were classified as low-grade glioma (n = 3), plexus tumor (n = 2), CNS high-grade neuroepithelial tumor with MN1 alteration (n = 2), papillary tumor of the pineal region (n = 2), neurocytoma (n = 1), or did not match to any known brain tumor methylation class (n = 8). Overall, integrated diagnosis had to be changed in 35.6% of cases as compared to the initial diagnosis. Among the tumors molecularly classified as ependymoma (27/45 cases), tanycytic ependymomas were mostly located in the spine (5/7 cases) and matched to spinal or myxopapillary ependymoma. 6/8 clear cell ependymomas were found supratentorially and fell into the methylation class of RELA-EPN. Papillary ependymomas with a positive ependymoma match (12/19 cases) showed either a "papillary" (n = 5), a "trabecular" (n = 1), or a "pseudo-papillary" (n = 6) growth pattern. The papillary growth pattern was strongly associated with the methylation class B of posterior fossa ependymoma (PFB, 5/5 cases) and tumors displayed DNA methylation sites that were significantly different when compared to PFB ependymomas without papillary growth. Tumors with pseudo-papillary histology matched to the methylation class of myxopapillary ependymoma (4/6 cases), whereas the trabecular case was anatomically and molecularly a spinal ependymoma. Our results show that the diagnosis of histological ependymoma variants is challenging and epigenetic profiles may improve diagnostic accuracy of these cases. Whereas clear cell and papillary ependymomas display correlations between localization, histology, and methylation, tanycytic ependymoma does not represent a molecularly distinct subgroup.
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Thomas-Jardin SE, Dahl H, Kanchwala MS, Ha F, Jacob J, Soundharrajan R, Bautista M, Nawas AF, Robichaux D, Mistry R, Anunobi V, Xing C, Delk NA. RELA is sufficient to mediate interleukin-1 repression of androgen receptor expression and activity in an LNCaP disease progression model. Prostate 2020; 80:133-145. [PMID: 31730277 PMCID: PMC7000272 DOI: 10.1002/pros.23925] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 10/31/2019] [Indexed: 12/19/2022]
Abstract
BACKGROUND The androgen receptor (AR) nuclear transcription factor is a therapeutic target for prostate cancer (PCa). Unfortunately, patients can develop resistance to AR-targeted therapies and progress to lethal disease, underscoring the importance of understanding the molecular mechanisms that underlie treatment resistance. Inflammation is implicated in PCa initiation and progression and we have previously reported that the inflammatory cytokine, interleukin-1 (IL-1), represses AR messenger RNA (mRNA) levels and activity in AR-positive (AR+ ) PCa cell lines concomitant with the upregulation of prosurvival biomolecules. Thus, we contend that IL-1 can select for AR-independent, treatment-resistant PCa cells. METHODS To begin to explore how IL-1 signaling leads to the repression of AR mRNA levels, we performed comprehensive pathway analysis on our RNA sequencing data from IL-1-treated LNCaP PCa cells. Our pathway analysis predicted nuclear factor kappa B (NF-κB) p65 subunit (RELA), a canonical IL-1 signal transducer, to be significantly active and potentially regulate many genes, including AR. We used small interfering RNA (siRNA) to silence the NF-κB family of transcription factor subunits, RELA, RELB, c-REL, NFKB1, or NFKB2, in IL-1-treated LNCaP, C4-2, and C4-2B PCa cell lines. C4-2 and C4-2B cell lines are castration-resistant LNCaP sublines and represent progression toward metastatic PCa disease, and we have previously shown that IL-1 represses AR mRNA levels in C4-2 and C4-2B cells. RESULTS siRNA revealed that RELA alone is sufficient to mediate IL-1 repression of AR mRNA and AR activity. Intriguingly, while LNCaP cells are more sensitive to IL-1-mediated repression of AR than C4-2 and C4-2B cells, RELA siRNA led to a more striking derepression of AR mRNA levels and AR activity in C4-2 and C4-2B cells than in LNCaP cells. CONCLUSIONS These data indicate that there are RELA-independent mechanisms that regulate IL-1-mediated AR repression in LNCaP cells and suggest that the switch to RELA-dependent IL-1 repression of AR in C4-2 and C4-2B cells reflects changes in epigenetic and transcriptional programs that evolve during PCa disease progression.
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MESH Headings
- Cell Line, Tumor
- Disease Progression
- Epigenesis, Genetic
- Gene Expression Regulation, Neoplastic
- Humans
- Interleukin-1/metabolism
- Interleukin-1alpha/pharmacology
- Male
- NF-kappa B/metabolism
- Prostatic Neoplasms/drug therapy
- Prostatic Neoplasms/genetics
- Prostatic Neoplasms/metabolism
- Prostatic Neoplasms/pathology
- Prostatic Neoplasms, Castration-Resistant/drug therapy
- Prostatic Neoplasms, Castration-Resistant/genetics
- Prostatic Neoplasms, Castration-Resistant/metabolism
- Prostatic Neoplasms, Castration-Resistant/pathology
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Neoplasm/genetics
- RNA, Neoplasm/metabolism
- RNA, Small Interfering/administration & dosage
- RNA, Small Interfering/genetics
- RNA-Binding Proteins/genetics
- RNA-Binding Proteins/metabolism
- Receptors, Androgen/biosynthesis
- Receptors, Androgen/genetics
- Transcription Factor RelA/genetics
- Transcription Factor RelA/metabolism
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Affiliation(s)
| | - Haley Dahl
- Biological Sciences Department, The University of Texas at Dallas, Richardson, Texas
| | - Mohammed S. Kanchwala
- McDermott Center of Human Growth and Development, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Freedom Ha
- Biological Sciences Department, The University of Texas at Dallas, Richardson, Texas
| | - Joan Jacob
- Biological Sciences Department, The University of Texas at Dallas, Richardson, Texas
| | - Reshma Soundharrajan
- Biological Sciences Department, The University of Texas at Dallas, Richardson, Texas
| | - Monica Bautista
- Biological Sciences Department, The University of Texas at Dallas, Richardson, Texas
| | - Afshan F. Nawas
- Biological Sciences Department, The University of Texas at Dallas, Richardson, Texas
| | - Dexter Robichaux
- Biological Sciences Department, The University of Texas at Dallas, Richardson, Texas
| | - Ragini Mistry
- Biological Sciences Department, The University of Texas at Dallas, Richardson, Texas
| | - Vanessa Anunobi
- Biological Sciences Department, The University of Texas at Dallas, Richardson, Texas
| | - Chao Xing
- McDermott Center of Human Growth and Development, The University of Texas Southwestern Medical Center, Dallas, Texas
- Department of Bioinformatics, The University of Texas Southwestern Medical Center, Dallas, Texas
- Department of Clinical Sciences, The University of Texas Southwestern Medical Center, Dallas, Texas
| | - Nikki A. Delk
- Biological Sciences Department, The University of Texas at Dallas, Richardson, Texas
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Harrold AP, Cleary MM, Bharathy N, Lathara M, Berlow NE, Foreman NK, Donson AM, Amani V, Zuercher WJ, Keller C. In vitro benchmarking of NF-κB inhibitors. Eur J Pharmacol 2020; 873:172981. [PMID: 32014486 DOI: 10.1016/j.ejphar.2020.172981] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 01/30/2020] [Accepted: 01/30/2020] [Indexed: 11/27/2022]
Abstract
Dysregulated activity of the transcription factors of the nuclear factor κb (NF-κB) family has been implicated in numerous cancer types, inflammatory diseases, autoimmune disease, and other disorders. As such, selective NF-κB pathway inhibition is an attractive target to researchers for preclinical and clinical drug development. A plethora of commercially and clinically available inhibitors claim to be NF-κB specific; however, such claims of specificity are rarely quantitative or benchmarked, making the biomedical literature difficult to contextualize. This imprecision is worsened because some NF-κB reporter systems have low signal-to-noise ratios. Herein, we use a robust, defined, commercially available reporter system to benchmark NF-κB agonists and antagonists for the field. We also functionally characterize a RELA fusion-positive ependymoma cell culture with validated NF-κB inhibitor compounds.
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Affiliation(s)
| | - Megan M Cleary
- Children's Cancer Therapy Development Institute, Beaverton, OR, 97005, USA
| | - Narendra Bharathy
- Children's Cancer Therapy Development Institute, Beaverton, OR, 97005, USA
| | | | - Noah E Berlow
- Children's Cancer Therapy Development Institute, Beaverton, OR, 97005, USA
| | - Nicholas K Foreman
- Department of Pediatrics, University of Colorado Denver, Aurora, CO, 80045, USA
| | - Andrew M Donson
- Department of Pediatrics, University of Colorado Denver, Aurora, CO, 80045, USA
| | - Vladimir Amani
- Department of Pediatrics, University of Colorado Denver, Aurora, CO, 80045, USA
| | - William J Zuercher
- Structural Genomics Consortium, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, SGC Center for Chemical Biology, Chapel Hill, NC, 27599, USA; Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Charles Keller
- Children's Cancer Therapy Development Institute, Beaverton, OR, 97005, USA.
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Han N, Yang L, Zhang X, Zhou Y, Chen R, Yu Y, Dong Z, Zhang M. LncRNA MATN1-AS1 prevents glioblastoma cell from proliferation and invasion via RELA regulation and MAPK signaling pathway. Ann Transl Med 2019; 7:784. [PMID: 32042800 DOI: 10.21037/atm.2019.11.36] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Background Glioblastoma (GBM) is one of the most aggressive and malignant tumor types. Despite treatment advances, GBM pathogenesis still remains largely unknown. MATN1-AS1, an intron-retained long non-coding RNA (lncRNA), has been implicated in GBM development. However, the underlying mechanism has not been identified. This study aimed to examine MATN1-AS1 expression and uncover its role in GBM. Methods LncRNAs with low expression levels were selected by analyzing brain glioma-related genes. The relative mRNA level of MATN1-AS1 was quantified using RT-qPCR in 75 GBM tumors and 10 normal brain tissues. Overall survival was assessed using the Kaplan-Meier method. RT-qPCR and immunoblotting analysis were carried out to assess the levels of MATN1-AS1, RELA, ERK1/2, Bcl-2, Bax, survivin, and MMP-9 in GBM cells. Biological functions of MATN1-AS1 in GBM tumors were measured both in vivo and in vitro. The mechanism of RELA regulation by MATN1-AS1 was detected using RNA pull-down, RNA-binding protein immunoprecipitation, chromatin immunoprecipitation, and the dual luciferase reporter gene assay. Results MATN1-AS1 was the most downregulated lncRNA in GBM and was correlated with a shorter survival time and poorer prognosis of GBM patients. Conversely, RELA was increased in GBM tumor tissues and negatively correlated with MATN1-AS1 expression. MATN1-AS1 over-expression or siRNA-RELA knockdown resulted in downregulation of mRNA and protein levels of RELA, ERK1/2, Bcl-2, survivin, and MMP-9; reduced cell proliferation and invasion; increased Bax mRNA and protein levels; and enhanced cellular apoptosis. MATN1-AS1 bound to E2F6, which negatively targeted RELA. Furthermore, MATN1-AS1 over-expression in GBM cells resulted in significant inhibition of tumor growth in vivo. Conclusions Upregulation of the lncRNA MATN1-AS1 inhibited GBM cell proliferation and invasion through inhibition of RELA via E2F6 and suppression of the MAPK signaling pathway. MATN1-AS1 might be an underlying therapeutic target for GBM.
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Affiliation(s)
- Na Han
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Li Yang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Xiaoxi Zhang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yangmei Zhou
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Rui Chen
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yang Yu
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zhen Dong
- Department of Neurosurgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Mengxian Zhang
- Department of Oncology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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Zhang JQ, Hong B. miR520a-3p suppresses cell proliferation and metastasis by inhibiting the p65-NFκB pathway in glioblastoma. Onco Targets Ther 2019; 12:6503-6513. [PMID: 31616160 PMCID: PMC6699151 DOI: 10.2147/ott.s208889] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 07/18/2019] [Indexed: 11/23/2022] Open
Abstract
Background miR520a-3p has previously had its antitumorigenic role in various types of cancers revealed, and been predicted as a posttranscriptional regulator of the NFκB-subunit RELA gene. Thus, miR520a-3p could function in carcinogenesis through suppressing RELA. Methods Expression of miR520a-3p and RELA mRNA was quantified in glioma and normal tissue, and the correlation between them was analyzed statistically. Also, receiver-operating characteristic (ROC)–curve analysis was performed. Effects of miR520a-3p on cell viability, colony formation, migration, and invasion wereexplored in vitro. Whether RELA was a direct target of miR520a-3p or not was analyzed. Finally, restoration of RELA on the effect of miR520a-3p overexpression on proliferation of glioblastoma cells was detected. Results Data showed that miR520a-3p expression was aberrantly downregulated and associated with malignance in glioma tissue. Areas under ROC curves of miR520a-3p and RELA mRNA expression were 0.9483 and 0.5967, respectively. Also, miR520a-3p expression was statistically correlated with RELA mRNA level in grade III–IV glioma tissue. Transfection of miR520a-3p mimic significantly increased miR520a-3p expression, and resulted in significant suppression of proliferation, migration, and invasion of glioblastoma cells in vitro. miR520a-3p overexpression resulted in statistical downregulation of RELA, both in mRNA and protein levels. RELA was direct target of miR520a-3p. In addition, restoration of RELA significantly weakened the inhibitory effect of miR520a-3p overexpression on viability and EdU-labeled glioblastoma cells. Conclusion These findings suggest that miR520a-3p should be helpful in auxiliary glioma diagnosis and can attenuate the proliferation and metastasis of glioblastoma through suppressing RELA, and thus could be an attractive therapeutic target to eliminate glioblastoma.
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Affiliation(s)
- Jing-Quan Zhang
- Department of Neurosurgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, People's Republic of China
| | - Bo Hong
- Department of Neurosurgery, Changhai Hospital, Second Military Medical University, Shanghai 200433, People's Republic of China
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50
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Jeong YJ, Oh HK, Choi HR. Methylation of the RELA Gene is Associated with Expression of NF-κB1 in Response to TNF-α in Breast Cancer. Molecules 2019; 24:molecules24152834. [PMID: 31382678 PMCID: PMC6696039 DOI: 10.3390/molecules24152834] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/28/2019] [Accepted: 08/01/2019] [Indexed: 11/16/2022] Open
Abstract
The nuclear factor (NF)-κB family of transcriptional factors plays a critical role in inflammation, immunoregulation, cell differentiation, and tumorigenesis. This study aims to investigate the role of methylation of genes encoding for the NF-κB family in breast cancer. We analyze the DNA methylation status of the NFKB1 gene and the RELA gene in breast cancer using pyrosequencing. The expression of NF-κB1 and RELA proteins is assessed and the level of RNA transcripts in frozen tissue is determined using RT-PCR. There is no statistically significant difference in the methylation status of the NFKB1 and the RELA genes between tumors and normal tissues. The methylation status of the NFKB1 gene and the RELA gene is not significantly associated with the levels of NF-κB1 transcripts in tumor tissues. However, the methylation level of the RELA gene is significantly associated with the level of tumor necrosis factor (TNF)-α. In addition, the level of NF-κB1 transcripts was associated with the levels of TNF-α and IL-4. In tumors with positive TNF-α, the increased methylation level of the RELA gene is significantly associated with the positive expression of NF-κB1 transcripts. These results demonstrate that the level of the RELA gene methylation is related to the levels of NF-κB1 transcripts under the influence of TNF-α. Further study is needed to determine how TNF-α is involved in the methylation of the RELA gene and the subsequent expression of NF-κB1.
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Affiliation(s)
- Young Ju Jeong
- Department of Surgery, School of Medicine, Catholic University of Daegu, Daegu 42472, Korea.
| | - Hoon Kyu Oh
- Department of Pathology, School of Medicine, Catholic University of Daegu, Daegu 42472, Korea
| | - Hye Ryeon Choi
- Department of Surgery, School of Medicine, Catholic University of Daegu, Daegu 42472, Korea
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