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Cui Y, Li Y, Xu Y, Liu X, Kang X, Zhu J, Long S, Han Y, Xue C, Sun Z, Du Y, Hu J, Pan L, Zhou F, Xu X, Li X. SLC7A11 protects luminal A breast cancer cells against ferroptosis induced by CDK4/6 inhibitors. Redox Biol 2024; 76:103304. [PMID: 39153252 PMCID: PMC11378944 DOI: 10.1016/j.redox.2024.103304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 07/26/2024] [Accepted: 08/05/2024] [Indexed: 08/19/2024] Open
Abstract
Cyclin-dependent kinase 4 and 6 inhibitors (CDK4/6 inhibitors) can significantly extend tumor response in patients with metastatic luminal A breast cancer, yet intrinsic and acquired resistance remains a prevalent issue. Understanding the molecular features of CDK4/6 inhibitor sensitivity and the potential efficacy of their combination with novel targeted cell death inducers may lead to improved patient outcomes. Herein, we demonstrate that ferroptosis, a form of regulated cell death driven by iron-dependent phospholipid peroxidation, partly underpins the efficacy of CDK4/6 inhibitors. Mechanistically, CDK4/6 inhibitors downregulate the cystine transporter SLC7A11 by inhibiting SP1 binding to the SLC7A11 promoter region. Furthermore, SLC7A11 is identified as critical for the intrinsic sensitivity of luminal A breast cancer to CDK4/6 inhibitors. Both genetic and pharmacological inhibition of SP1 or SLC7A11 enhances cell sensitivity to CDK4/6 inhibitors and synergistically inhibits luminal A breast cancer growth when combined with CDK4/6 inhibitors in vitro and in vivo. Our data highlight the potential of targeting SLC7A11 in combination with CDK4/6 inhibitors, supporting further investigation of combination therapy in luminal A breast cancer.
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Affiliation(s)
- Yingshu Cui
- Medical School of Chinese PLA, Beijing, 100853, China; Department of Oncology, the Fifth Medical Center, Chinese PLA General Hospital, Beijing, 100071, China
| | - Yi Li
- Medical School of Chinese PLA, Beijing, 100853, China
| | - Yuanyuan Xu
- Department of Oncology, the Fifth Medical Center, Chinese PLA General Hospital, Beijing, 100071, China
| | - Xinxin Liu
- Department of General Surgery, Peking University First Hospital, Beijing, 100034, China
| | - Xiaofeng Kang
- Department of Genetic Engineering, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Junwen Zhu
- Department of Genetic Engineering, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Shan Long
- Department of Oncology, the Fifth Medical Center, Chinese PLA General Hospital, Beijing, 100071, China
| | - Yuchen Han
- Department of Genetic Engineering, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Chunyuan Xue
- Department of Genetic Engineering, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Zhijia Sun
- Medical School of Chinese PLA, Beijing, 100853, China
| | - Yimeng Du
- Department of Genetic Engineering, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Jia Hu
- Department of Genetic Engineering, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Lu Pan
- Department of Genetic Engineering, Beijing Institute of Biotechnology, Beijing, 100071, China
| | - Feifan Zhou
- State Key Laboratory of Digital Medical Engineering, School of Biomedical Engineering, Hainan University, Haikou, 570100, China.
| | - Xiaojie Xu
- Department of Genetic Engineering, Beijing Institute of Biotechnology, Beijing, 100071, China.
| | - Xiaosong Li
- Department of Oncology, the Fifth Medical Center, Chinese PLA General Hospital, Beijing, 100071, China.
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Zheng Y, Xiang G, Zeng L, Yang C, Ke J, Yu H, Zhang J. MiR-24-3p modulates cardiac function in doxorubicin -induced heart failure via the Sp1/PI3K signaling pathway. Cell Signal 2024:111407. [PMID: 39278455 DOI: 10.1016/j.cellsig.2024.111407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Revised: 09/01/2024] [Accepted: 09/09/2024] [Indexed: 09/18/2024]
Abstract
PURPOSE The goal of this research was to explore the role of miR-24-3p in heart failure (HF), with a focus on its impact on the specificity protein 1 (Sp1)/phosphoinositide 3-kinase (PI3K) pathway. METHODS HF rat and HF cell models were established using doxorubicin(Dox). Cardiac function was assessed through echocardiography, while histological changes were observed via hematoxylin-eosin (HE) staining. To further investigate the underlying mechanisms, HF cell models were treated with either an Sp1 inhibitor or a PI3K inhibitor. Additionally, models with miR-24-3p overexpression or silencing were constructed. N-terminal pro-brain natriuretic peptide (NT-proBNP) levels were determined by ELISA. Cell apoptosis was evaluated using TUNEL staining, and lactate dehydrogenase (LDH) levels were measured by colorimetry. Reactive oxygen species (ROS) production was analyzed using flow cytometry. Related gene and protein expressions were assessed via qRT-PCR and Western blotting. Finally, the relationship between miR-24-3p and Sp1 was confirmed through dual-luciferase assays. RESULTS Dox treatment increased the left ventricular internal diameter (LVIDd) while decreasing ejection fraction (EF) and fractional shortening (FS), leading to disorganized cardiomyocyte arrangement, cellular edema, and necrosis in rats. In HF rats, NT-proBNP, Caspase-3, and miR-24-3p expression levels were elevated, whereas Sp1 and PI3K mRNA and protein expression levels were decreased. Similarly, Dox-induced damage in H9c2 cardiomyocytes resulted in increased NT-proBNP, apoptosis, Caspase-3, LDH, ROS, and miR-24-3p expression, along with decreased Sp1 and PI3K expression. Treatment with either Sp1 or PI3K inhibitors exacerbated the Dox-induced cardiomyocyte damage, further elevating NT-proBNP, apoptosis, Caspase-3, LDH, ROS, and miR-24-3p expression levels. Notably, Sp1 inhibition reduced PI3K expression, and PI3K inhibition, in turn, suppressed Sp1 expression. Overexpression of miR-24-3p worsened Dox-induced cardiomyocyte damage, characterized by increased NT-proBNP, apoptosis, Caspase-3, LDH, and ROS expression, alongside reduced Sp1 and PI3K expression. In contrast, silencing miR-24-3p mitigated these detrimental effects and increased Sp1 and PI3K expression. Dual-luciferase assays confirmed that miR-24-3p directly targets Sp1. CONCLUSION Dox induces cardiomyocyte damage, impairs cardiac function, and promotes cardiomyocyte apoptosis and oxidative stress. Silencing miR-24-3p offers a protective effect by activating the Sp1/PI3K signaling pathway in heart failure.
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Affiliation(s)
- Yonghong Zheng
- Department of Cardiology, Fujian Provincial Hospital, Fuzhou 350001, Fujian, China; Provincial Clinical Medical College of Fujian Medical University, Fuzhou 350001, Fujian, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou 350001, Fujian, China
| | - Guojian Xiang
- Department of Cardiology, Fujian Provincial Hospital, Fuzhou 350001, Fujian, China; Provincial Clinical Medical College of Fujian Medical University, Fuzhou 350001, Fujian, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou 350001, Fujian, China
| | - Linwen Zeng
- Provincial Clinical Medical College of Fujian Medical University, Fuzhou 350001, Fujian, China
| | - Chao Yang
- Provincial Clinical Medical College of Fujian Medical University, Fuzhou 350001, Fujian, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou 350001, Fujian, China; Department of Intensive Care Medicine, Fujian Provincial Hospital, Fuzhou 350001, Fujian, China
| | - Jun Ke
- Provincial Clinical Medical College of Fujian Medical University, Fuzhou 350001, Fujian, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou 350001, Fujian, China
| | - Huizhen Yu
- Provincial Clinical Medical College of Fujian Medical University, Fuzhou 350001, Fujian, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou 350001, Fujian, China; Department of Cardiology in South Branch, Fujian Provincial Hospital, Fuzhou 350001, Fujian, China.
| | - Jiancheng Zhang
- Department of Cardiology, Fujian Provincial Hospital, Fuzhou 350001, Fujian, China; Provincial Clinical Medical College of Fujian Medical University, Fuzhou 350001, Fujian, China; Fuzhou University Affiliated Provincial Hospital, Fuzhou 350001, Fujian, China.
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Fu M, Du Y, Liu F, Xiao J, Zhang L, Zeng Y, Yang Y, Yan Y. Prognostic value of KLFs family genes in renal clear cell carcinoma. Sci Rep 2024; 14:20204. [PMID: 39215019 PMCID: PMC11364764 DOI: 10.1038/s41598-024-69892-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 08/09/2024] [Indexed: 09/04/2024] Open
Abstract
Numerous studies have shown that the Krüppel-like factors (KLFs) family of transcription factors regulate various eukaryotic physiological processes including the proliferation, differentiation, senescence, death, and carcinogenesis of animal cells. In addition, they are involved in the regulation of key biological processes such as cell cycle, DNA repair, and immune response. Current studies focus on investigating the role of KLFs in normal physiological conditions and the incidence and development of diseases. However002C the significance of KLFs family genes in clear cell renal cell carcinoma (ccRCC) remains partly understood; therefore, an in-depth investigation of their role and clinical value in this cancer is desired. The study aimed to investigate the role of KLF family genes in the incidence, development, and prognosis of ccRCC, and to identify the related potential biomarkers and therapeutic targets. The expression of KLFs in the RNA sequencing data of 613 ccRCCs from the TCGA database was analyzed using R software, and UALCAN and GEPIA assessed the expression of KLF genes in ccRCC. Real-time fluorescence quantitative PCR analysis was performed using 10 pairs of paired ccRCC sample tissues and renal cancer cell lines from the First Affiliated Hospital of Nanchang University. Overall survival (OS), progression-free interval (PFI), and disease-specific survival (DSS) of Kidney Clear Cell Carcinoma (KIRC) samples at differential expressions of KLFs in the TCGA database were analyzed using the R software, followed by generating a nomogram prediction model. GSCALite assessed the interactions of KLF genes with miRNAs and generated network maps. Protein interaction network maps of 50 neighboring genes associated with KLF mutations were analyzed using STRING with GO and KEGG functional enrichment analyses. The cBioPortal determined the probability of KLF gene mutations and their impact on OS and disease-free survival (DFS) in patients with ccRCC. Immune cell infiltration of KLFs was analyzed using TIMER. Finally, GSCALite was used to analyze the drug sensitivity and associated pathways of action of KLFs. Correlation validation using cellular experiments. KLF3/5/9/15 were significantly downregulated in ccRCC tissues, whereas KLF16/17 were upregulated compared with the adjacent tissues. Patients with high mRNA levels of KLF16/17 showed significantly lower OS, PFI, and DSS, whereas KLF3/5/9 showed a reverse trend. In patients with ccRCC, a significant correlation was observed between KLF mutations and OS and DSS. Furthermore, the correlation of KLF3/5/9 with immune cell infiltration was stronger than that of KLF15/16, while KLF17 was significantly associated with the Epithelial-Mesenchymal Transition (EMT) pathway. Overexpression of KLF5 inhibits the proliferative and migratory capacity of renal cancer cells (786-O and OS-RC-2), as well as their sensitivity to relevant small molecule drugs. Our research revealed the expression levels and biological significance of KLF genes in ccRCC, particularly highlighting the potential of KLF5 as a promising biomarker and therapeutic target for effective prognosis and diagnosis of ccRCC.
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Affiliation(s)
- MengRu Fu
- Department of Nephrology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330000, Jiangxi Province, China
- Key Laboratory of Urinary System Diseases of Jiangxi Province, Nanchang, China
| | - YuanZhuo Du
- Key Laboratory of Urinary System Diseases of Jiangxi Province, Nanchang, China
- Department of Urology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, Jiangxi Province, China, 330000
| | - Fei Liu
- Department of Nephrology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330000, Jiangxi Province, China
- Key Laboratory of Urinary System Diseases of Jiangxi Province, Nanchang, China
| | - Jun Xiao
- Department of Nephrology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330000, Jiangxi Province, China
| | - Li Zhang
- Department of Nephrology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330000, Jiangxi Province, China
| | - Yan Zeng
- Department of Nephrology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330000, Jiangxi Province, China
| | - YuJuan Yang
- Department of Nephrology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330000, Jiangxi Province, China
| | - Yan Yan
- Department of Nephrology, The First Affiliated Hospital, Jiangxi Medical College, Nanchang University, Nanchang, 330000, Jiangxi Province, China.
- Key Laboratory of Urinary System Diseases of Jiangxi Province, Nanchang, China.
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Knight HR, Ketter E, Ung T, Weiss A, Ajit J, Chen Q, Shen J, Ip KM, Chiang CY, Barreiro L, Esser-Kahn A. High-throughput screen identifies non inflammatory small molecule inducers of trained immunity. Proc Natl Acad Sci U S A 2024; 121:e2400413121. [PMID: 38976741 PMCID: PMC11260140 DOI: 10.1073/pnas.2400413121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Accepted: 05/29/2024] [Indexed: 07/10/2024] Open
Abstract
Trained immunity is characterized by epigenetic and metabolic reprogramming in response to specific stimuli. This rewiring can result in increased cytokine and effector responses to pathogenic challenges, providing nonspecific protection against disease. It may also improve immune responses to established immunotherapeutics and vaccines. Despite its promise for next-generation therapeutic design, most current understanding and experimentation is conducted with complex and heterogeneous biologically derived molecules, such as β-glucan or the Bacillus Calmette-Guérin (BCG) vaccine. This limited collection of training compounds also limits the study of the genes most involved in training responses as each molecule has both training and nontraining effects. Small molecules with tunable pharmacokinetics and delivery modalities would both assist in the study of trained immunity and its future applications. To identify small molecule inducers of trained immunity, we screened a library of 2,000 drugs and drug-like compounds. Identification of well-defined compounds can improve our understanding of innate immune memory and broaden the scope of its clinical applications. We identified over two dozen small molecules in several chemical classes that induce a training phenotype in the absence of initial immune activation-a current limitation of reported inducers of training. A surprising result was the identification of glucocorticoids, traditionally considered immunosuppressive, providing an unprecedented link between glucocorticoids and trained innate immunity. We chose seven of these top candidates to characterize and establish training activity in vivo. In this work, we expand the number of compounds known to induce trained immunity, creating alternative avenues for studying and applying innate immune training.
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Affiliation(s)
- Hannah Riley Knight
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
| | - Ellen Ketter
- Biological Sciences Division, University of Chicago, Chicago, IL60637
| | - Trevor Ung
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
| | - Adam Weiss
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
| | - Jainu Ajit
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
| | - Qing Chen
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
| | - Jingjing Shen
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
| | - Ka Man Ip
- Biological Sciences Division, University of Chicago, Chicago, IL60637
| | - Chun-yi Chiang
- Biological Sciences Division, University of Chicago, Chicago, IL60637
| | - Luis Barreiro
- Biological Sciences Division, University of Chicago, Chicago, IL60637
| | - Aaron Esser-Kahn
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL60637
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Ding J, Fayyaz AI, Ding Y, Liang D, Luo M. Role of Specificity Protein 1 (SP1) in Cardiovascular Diseases: Pathological Mechanisms and Therapeutic Potentials. Biomolecules 2024; 14:807. [PMID: 39062521 PMCID: PMC11274404 DOI: 10.3390/biom14070807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Revised: 07/01/2024] [Accepted: 07/05/2024] [Indexed: 07/28/2024] Open
Abstract
In mammals, specificity protein 1 (SP1) was the first Cys2-His2 zinc finger transcription factor to be isolated within the specificity protein and Krüppel-like factor (Sp/KLF) gene family. SP1 regulates gene expression by binding to Guanine-Cytosine (GC)-rich sequences on promoter regions of target genes, affecting various cellular processes. Additionally, the activity of SP1 is markedly influenced by posttranslational modifications, such as phosphorylation, acetylation, glycosylation, and proteolysis. SP1 is implicated in the regulation of apoptosis, cell hypertrophy, inflammation, oxidative stress, lipid metabolism, plaque stabilization, endothelial dysfunction, fibrosis, calcification, and other pathological processes. These processes impact the onset and progression of numerous cardiovascular disorders, including coronary heart disease, ischemia-reperfusion injury, cardiomyopathy, arrhythmia, and vascular disease. SP1 emerges as a potential target for the prevention and therapeutic intervention of cardiac ailments. In this review, we delve into the biological functions, pathophysiological mechanisms, and potential clinical implications of SP1 in cardiac pathology to offer valuable insights into the regulatory functions of SP1 in heart diseases and unveil novel avenues for the prevention and treatment of cardiovascular conditions.
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Affiliation(s)
- Jie Ding
- School of Medicine, Tongji University, Shanghai 200092, China; (J.D.); (D.L.)
- State Key Laboratory of Cardiovascular Diseases, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China
- Shanghai Arrhythmia Research Center, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China
| | - Aminah I. Fayyaz
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI 48201, USA; (A.I.F.); (Y.D.)
| | - Yuchuan Ding
- Department of Neurosurgery, Wayne State University School of Medicine, Detroit, MI 48201, USA; (A.I.F.); (Y.D.)
| | - Dandan Liang
- School of Medicine, Tongji University, Shanghai 200092, China; (J.D.); (D.L.)
- State Key Laboratory of Cardiovascular Diseases, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China
- Shanghai Arrhythmia Research Center, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China
| | - Ming Luo
- School of Medicine, Tongji University, Shanghai 200092, China; (J.D.); (D.L.)
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Wang L, Zhang X, Li H, Mou Y, Cui G. SP1 promotes high glucose-induced lens epithelial cell viability, migration and epithelial-mesenchymal transition via regulating FGF7 and PI3K/AKT pathway. Int Ophthalmol 2024; 44:316. [PMID: 38969958 DOI: 10.1007/s10792-024-03230-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 06/18/2024] [Indexed: 07/07/2024]
Abstract
BACKGROUND Diabetic cataract (DC) is a common complication of diabetes and its etiology and progression are multi-factorial. In this study, the roles of specific protein 1 (SP1) and fibroblast growth factor 7 (FGF7) in DC development were explored. METHODS DC cell model was established by treating SRA01/04 cells with high glucose (HG). MTT assay was conducted to evaluate cell viability. Transwell assay and wound-healing assay were performed to assess cell migration and invasion. Western blot assay and qRT-PCR assay were conducted to measure the expression of N-cadherin, E-cadherin, Collagen I, Fibronectin, SP1 and FGF7 expression. CHIP assay and dual-luciferase reporter assay were conducted to analyze the combination between FGF7 and SP1. RESULTS FGF7 was upregulated in DC patients and HG-induced SRA01/04 cells. HG treatment promoted SRA01/04 cell viability, migration, invasion and epithelial-mesenchymal transition (EMT), while FGF7 knockdown abated the effects. Transcription factor SP1 activated the transcription level of FGF7 and SP1 overexpression aggravated HG-induced SRA01/04 cell injury. SP1 silencing repressed HG-induced SRA01/04 cell viability, migration, invasion and EMT, but these effects were ameliorated by upregulating FGF7. Additionally, SP1 knockdown inhibited the PI3K/AKT pathway by regulating the transcription level of FGF7. CONCLUSION Transcription factor SP1 activated the transcription level of FGF7 and the PI3K/AKT pathway to regulate HG-induced SRA01/04 cell viability, migration, invasion and EMT.
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Affiliation(s)
- Ledan Wang
- Department of Ophthalmology, Ophthalmology Center, Taizhou Hospital of Zhejiang Province, 150 Ximen Street, Linhai, 317000, China
| | - Xin Zhang
- Department of Ophthalmology, Ophthalmology Center, Taizhou Hospital of Zhejiang Province, 150 Ximen Street, Linhai, 317000, China
| | - Huijun Li
- Department of Ophthalmology, Ophthalmology Center, Taizhou Hospital of Zhejiang Province, 150 Ximen Street, Linhai, 317000, China
| | - Yuehong Mou
- Department of Ophthalmology, Ophthalmology Center, Taizhou Hospital of Zhejiang Province, 150 Ximen Street, Linhai, 317000, China
| | - Gangfeng Cui
- Department of Ophthalmology, Ophthalmology Center, Taizhou Hospital of Zhejiang Province, 150 Ximen Street, Linhai, 317000, China.
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Zeng X, Lu Y, Zeng T, Liu W, Huang W, Yu T, Tang X, Huang P, Li B, Wei H. RNA demethylase FTO participates in malignant progression of gastric cancer by regulating SP1-AURKB-ATM pathway. Commun Biol 2024; 7:800. [PMID: 38956367 PMCID: PMC11220007 DOI: 10.1038/s42003-024-06477-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 06/20/2024] [Indexed: 07/04/2024] Open
Abstract
Gastric cancer (GC) is the 5th most prevalent cancer and the 4th primary cancer-associated mortality globally. As the first identified m6A demethylase for removing RNA methylation modification, fat mass and obesity-associated protein (FTO) plays instrumental roles in cancer development. Therefore, we study the biological functions and oncogenic mechanisms of FTO in GC tumorigenesis and progression. In our study, FTO expression is obviously upregulated in GC tissues and cells. The upregulation of FTO is associated with advanced nerve invasion, tumor size, and LNM, as well as the poor prognosis in GC patients, and promoted GC cell viability, colony formation, migration and invasion. Mechanistically, FTO targeted specificity protein 1 and Aurora Kinase B, resulting in the phosphorylation of ataxia telangiectasia mutated and P38 and dephosphorylation of P53. In conclusion, the m6A demethylase FTO promotes GC tumorigenesis and progression by regulating the SP1-AURKB-ATM pathway, which may highlight the potential of FTO as a diagnostic biomarker for GC patients' therapy response and prognosis.
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Affiliation(s)
- Xueliang Zeng
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, 730000, China
- Department of Pharmacy, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Yao Lu
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, 730000, China
- School of Basic Medicine, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Taohui Zeng
- Department of Pharmacy, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Wenyu Liu
- Department of Pharmacy, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Weicai Huang
- Department of Pharmacy, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Tingting Yu
- Department of Pharmacy, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Xuerui Tang
- Department of Pharmacy, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Panpan Huang
- Department of Pharmacy, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, 341000, China
| | - Bei Li
- Department of Pharmacy, The First Affiliated Hospital of Gannan Medical University, Gannan Medical University, Ganzhou, Jiangxi, 341000, China.
| | - Hulai Wei
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, 730000, China.
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Nyarko-Danquah I, Pajarillo E, Kim S, Digman A, Multani HK, Ajayi I, Son DS, Aschner M, Lee E. Microglial Sp1 induced LRRK2 upregulation in response to manganese exposure, and 17β-estradiol afforded protection against this manganese toxicity. Neurotoxicology 2024; 103:105-114. [PMID: 38857675 DOI: 10.1016/j.neuro.2024.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 05/13/2024] [Accepted: 05/27/2024] [Indexed: 06/12/2024]
Abstract
Chronic exposure to elevated levels of manganese (Mn) causes a neurological disorder referred to as manganism, presenting symptoms similar to those of Parkinson's disease (PD), yet the mechanisms by which Mn induces its neurotoxicity are not completely understood. 17β-estradiol (E2) affords neuroprotection against Mn toxicity in various neural cell types including microglia. Our previous studies have shown that leucine-rich repeat kinase 2 (LRRK2) mediates Mn-induced inflammatory toxicity in microglia. The LRRK2 promoter sequences contain three putative binding sites of the transcription factor (TF), specificity protein 1 (Sp1), which increases LRRK2 promoter activity. In the present study, we tested if the Sp1-LRRK2 pathway plays a role in both Mn toxicity and the protection afforded by E2 against Mn toxicity in BV2 microglial cells. The results showed that Mn induced cytotoxicity, oxidative stress, and tumor necrosis factor-α production, which were attenuated by an LRRK2 inhibitor, GSK2578215A. The overexpression of Sp1 increased LRRK2 promoter activity, mRNA and protein levels, while inhibition of Sp1 with its pharmacological inhibitor, mithramycin A, attenuated the Mn-induced increases in LRRK2 expression. Furthermore, E2 attenuated the Mn-induced Sp1 expression by decreasing the expression of Sp1 via the promotion of the ubiquitin-dependent degradation pathway, which was accompanied by increased protein levels of RING finger protein 4, the E3-ligase of Sp1, Sp1 ubiquitination, and SUMOylation. Taken together, our novel findings suggest that Sp1 serves as a critical TF in Mn-induced LRRK2 expression as well as in the protection afforded by E2 against Mn toxicity through reduction of LRRK2 expression in microglia.
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Affiliation(s)
- Ivan Nyarko-Danquah
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Edward Pajarillo
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Sanghoon Kim
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Alexis Digman
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Harpreet Kaur Multani
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Itunu Ajayi
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA
| | - Deok-Soo Son
- Department of Biochemistry, Cancer Biology, Neuroscience and Pharmacology, Meharry Medical College, Nashville, TN 37208, USA
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, New York, NY 10461, USA
| | - Eunsook Lee
- Department of Pharmaceutical Science, College of Pharmacy and Pharmaceutical Sciences, Florida A&M University, Tallahassee, FL 32307, USA.
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Sichani AR, Sichani ZR, Yazdani B, Looha MA, Sirous H. A bioinformatics approach of specificity protein transcription factors in head and neck squamous cell carcinoma. Res Pharm Sci 2024; 19:287-302. [PMID: 39035812 PMCID: PMC11257197 DOI: 10.4103/rps.rps_171_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 10/14/2023] [Accepted: 11/13/2023] [Indexed: 07/23/2024] Open
Abstract
Background and purpose The seventh most common type of cancer with increasing diagnosis rates around the world is head and neck squamous cell carcinoma (HNSCC). Specificity proteins (SPs) have been known for their role in the regulation of cellular division, growth, and apoptotic pathways in various cancers. In this work, we analyzed the expression levels of SPs in HNSCC to assess their diagnostic and prognostic biomarker potential. Experimental approach Differential gene expression and correlation analysis methods were used to determine the top dysregulated genes in HNSCC. Functional enrichment and protein-protein interaction analyses were done with the DAVID database and Cytoscape software to understand their function and biological processes. Receiver operating test, logistic regression, and Cox regression analyses were performed to check SP genes' diagnostic and prognostic potential. Findings/Results SP1 (LogFC = -0.27, P = 0.0013) and SP2 (LogFC = -0.20, P = 0.0019) genes were upregulated in HNSCC samples, while SP8 (LogFC = 2.57, P < 0.001) and SP9 (LogFC = 2.57, P < 0.001) genes were downregulated in cancer samples. A moderate positive correlation was observed among the expression levels of SP1, SP2, and SP3 genes. The SP8 and SP9 genes with AUC values of 0.79 and 0.75 demonstrated diagnostic potential which increased to 0.84 when both genes were assessed by logistic regression test. Also, the SP1 gene held a marginally significant prognostic potential. Conclusion and implications Our findings clarify the potential of SP transcription factors as candidate diagnostic and prognostic biomarkers for early screening and treatment of HNSCC.
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Affiliation(s)
- Adel Rezvani Sichani
- Department of Food Science and Technology, Shahreza Branch, Islamic Azad University, Shahreza. I.R. Iran
| | - Ziba Rezvani Sichani
- Department of Biochemistry, Islamic Azad University, Falavarjan Branch, I.R. Iran
| | - Behnaz Yazdani
- Bioscience Department, Faculty of Science and Technology (FCT), Universitat de Vic—Universitat Central de Catalunya (Uvic-UCC), 08500 Vic, Spain
| | - Mehdi Azizmohammad Looha
- Basic and Molecular Epidemiology of Gastrointestinal Disorders Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hajar Sirous
- Bioinformatics Research Center, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, I.R. Iran
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10
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El-Mayet FS, Santos VC, Wijesekera N, Lubbers S, Harrison KS, Sadeghi H, Jones C. Glucocorticoid receptor and specificity protein 1 (Sp1) or Sp3, but not the antibiotic Mithramycin A, stimulates human alphaherpesvirus 1 (HSV-1) replication. Antiviral Res 2024; 225:105870. [PMID: 38556059 PMCID: PMC11109923 DOI: 10.1016/j.antiviral.2024.105870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/15/2024] [Accepted: 03/22/2024] [Indexed: 04/02/2024]
Abstract
Following acute human alphaherpesvirus 1 (HSV-1) infection of oral-facial mucosal surfaces, sensory neurons in trigeminal ganglia (TG) are important sites for life-long latency. Neurons in the central nervous system, including brainstem, also harbor viral genomes during latency. Periodically, certain cellular stressors trigger reactivation from latency, which can lead to recurrent HSV-1 disease: herpes labialis, herpes stromal keratitis, and encephalitis for example. Activation of the glucocorticoid receptor (GR) by stressful stimuli enhances HSV-1 gene expression, replication, and explant-induced reactivation. GR and certain stress-induced Krüppel like factors (KLF) cooperatively transactivate cis-regulatory modules (CRM) that drive expression of viral transcriptional regulatory proteins (ICP0, ICP4, and ICP27). These CRMs lack GR response elements (GRE); however, specificity protein 1 (Sp1) binding sites are crucial for GR and KLF15 or KLF4 mediated transactivation. Hence, we tested whether Sp1 or Sp3 regulate viral replication and transactivation of the ICP0 promoter. During early stages of explant-induced reactivation from latency, the number of Sp3+ TG neurons were significantly higher relative to TG from latently infected mice. Conversely, Sp1+ TG neurons were only increased in females, but not male mice, during explant-induced reactivation. Sp1 siRNA significantly reduced HSV-1 replication in cultured mouse (Neuro-2A) and monkey (CV-1) cells. Mithramycin A, an antibiotic that has anti-tumor activity preferentially interacts with GC-rich DNA, including Sp1 binding sites, significantly reduced HSV-1 replication indicating it has antiviral activity. GR and Sp1 or Sp3 transactivated the HSV-1 ICP0 promoter in Neuro-2A and CV-1 cells confirming these transcription factors enhance viral replication and gene expression.
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Affiliation(s)
- Fouad S El-Mayet
- Oklahoma State University, College of Veterinary Medicine, Department of Veterinary Pathobiology, Stillwater, OK, USA; Benha University, Faculty of Veterinary Medicine, Department of Virology, Moshtohor, 13736, Kaliobyia, Egypt
| | - Vanessa Claire Santos
- Oklahoma State University, College of Veterinary Medicine, Department of Veterinary Pathobiology, Stillwater, OK, USA
| | - Nishani Wijesekera
- Oklahoma State University, College of Veterinary Medicine, Department of Veterinary Pathobiology, Stillwater, OK, USA
| | - Sydney Lubbers
- Oklahoma State University, College of Veterinary Medicine, Department of Veterinary Pathobiology, Stillwater, OK, USA
| | - Kelly S Harrison
- Oklahoma State University, College of Veterinary Medicine, Department of Veterinary Pathobiology, Stillwater, OK, USA
| | - Hafez Sadeghi
- Oklahoma State University, College of Veterinary Medicine, Department of Veterinary Pathobiology, Stillwater, OK, USA
| | - Clinton Jones
- Oklahoma State University, College of Veterinary Medicine, Department of Veterinary Pathobiology, Stillwater, OK, USA.
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11
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Meyers WM. Transcriptional regulation of the alternative sex hormone-binding globulin promoter by KLF4. Gene Expr Patterns 2024:119357. [PMID: 38460578 DOI: 10.1016/j.gep.2024.119357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 01/21/2024] [Accepted: 02/28/2024] [Indexed: 03/11/2024]
Abstract
In most mammals the major site of sex hormone-binding globulin (SHBG) synthesis is the liver wherefrom it is secreted into the bloodstream and is the primary determinant of sex steroid access to target tissues. The minor site of SHBG synthesis is the testis and in lower mammals testicular SHBG has long been known to be synthesized and secreted by Sertoli cells. However, human testicular SHBG is expressed in developing germ cells from an upstream alternative promoter (altP-SHBG). Transcripts arising from this region comprise an alternative first exon (1A) with the resultant protein confined to the acrosomal compartment of the mature spermatozoa. I have dissected the regulatory components of the alternative SHBG promoter and identified motifs that are required for optimal transcriptional activity from this region. Transcriptional activity is driven by two CACCC elements that appear to be functionally redundant. The transcription factor KLF4 interacts with promoter the region spanning these elements in vivo. Knockdown of Klf4 results in decreased altP-SHBG activity, while Klf4 overexpression relieves the effects of knockdown. Based on their shared patterns of expression in vivo, I conclude that KLF4 is a transcriptional regulator of SHBG in male germ cells.
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Affiliation(s)
- Warren M Meyers
- Department of Cellular & Physiological Sciences, 2350 Health Sciences Mall, University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.
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12
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Jha K, Kumar A, Bhatnagar K, Patra A, Bhavesh NS, Singh B, Chaudhary S. Modulation of Krüppel-like factors (KLFs) interaction with their binding partners in cancers through acetylation and phosphorylation. BIOCHIMICA ET BIOPHYSICA ACTA. GENE REGULATORY MECHANISMS 2024; 1867:195003. [PMID: 37992989 DOI: 10.1016/j.bbagrm.2023.195003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 09/05/2023] [Accepted: 11/16/2023] [Indexed: 11/24/2023]
Abstract
Post-translational modifications (PTMs) of transcription factors regulate transcriptional activity and play a key role in essentially all biological processes and generate indispensable insight towards biological function including activity state, subcellular localization, protein solubility, protein folding, substrate trafficking, and protein-protein interactions. Amino acids modified chemically via PTMs, function as molecular switches and affect the protein function and characterization and increase the proteome complexity. Krüppel-like transcription factors (KLFs) control essential cellular processes including proliferation, differentiation, migration, programmed cell death and various cancer-relevant processes. We investigated the interactions of KLF group-2 members with their binding partners to assess the role of acetylation and phosphorylation in KLFs on their binding affinity. It was observed that acetylation and phosphorylation at different positions in KLFs have a variable effect on binding with specific partners. KLF2-EP300, KLF4-SP1, KLF6-ATF3, KLF6-JUN, and KLF7-JUN show stabilization upon acetylation or phosphorylation at variable positions. On the other hand, KLF4-CBP, KLF4-EP300, KLF5-CBP, KLF5-WWP1, KLF6-SP1, and KLF7-ATF3 show stabilization or destabilization due to acetylation or phosphorylation at variable positions in KLFs. This provides a molecular explanation of the experimentally observed dual role of KLF group-2 members as a suppressor or activator of cancers in a PTM-dependent manner.
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Affiliation(s)
- Kanupriya Jha
- Department of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone 2, Greater Noida, Uttar Pradesh 201310, India.
| | - Amit Kumar
- Department of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone 2, Greater Noida, Uttar Pradesh 201310, India.
| | - Kartik Bhatnagar
- Department of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone 2, Greater Noida, Uttar Pradesh 201310, India.
| | - Anupam Patra
- Transcription Regulation Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi 110067, India.
| | - Neel Sarovar Bhavesh
- Transcription Regulation Group, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi 110067, India.
| | - Bipin Singh
- Department of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone 2, Greater Noida, Uttar Pradesh 201310, India; Centre for Life Sciences, Mahindra University, Bahadurpally, Jeedimetla, Hyderabad, Telangana 500043, India.
| | - Sarika Chaudhary
- Department of Biotechnology, School of Engineering and Applied Sciences, Bennett University, Plot Nos. 8-11, Tech Zone 2, Greater Noida, Uttar Pradesh 201310, India.
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13
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Jumaniyazova E, Aghajanyan A, Kurevlev S, Tskhovrebova L, Makarov A, Gordon K, Lokhonina A, Fatkhudinov T. SP1 Gene Methylation in Head and Neck Squamous Cell Cancer in HPV-Negative Patients. Genes (Basel) 2024; 15:281. [PMID: 38540340 PMCID: PMC10970621 DOI: 10.3390/genes15030281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/17/2024] [Accepted: 02/21/2024] [Indexed: 04/02/2024] Open
Abstract
There is still much to learn about the epigenetic mechanisms controlling gene expression during carcinogenesis. When researching aberrant DNA methylation, active proliferative tumor cells from head and neck squamous cell cancer (HNSCC) can be used as a model. The aim of the study was to investigate the methylation status of CDKN1, CDKN2A, MYC, Smad3, SP1, and UBC genes in tumor tissue (control-normal tissue) in 50 patients (37 men and 13 women) with HPV-negative HNSCC. Methods: Bisulfite conversion methods and methyl-sensitive analysis of high-resolution melting curves were used to quantify the methylation of genes. In all patients and across various subgroups (tongue carcinoma, laryngeal and other types of carcinomas T2, T3, T4 status; age before and after 50 years; smoking and non-smoking), there are consistent differences in the methylation levels in the SP1 gene in tumor DNA compared to normal. Results: The methylation of the SP1 gene in tumor DNA suppresses its expression, hinders HNSCC cell proliferation regulation, and could be a molecular indicator of malignant cell growth. The study of DNA methylation of various genes involved in carcinogenesis is promising because hypermethylated promoters can serve as potential biomarkers of disease.
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Affiliation(s)
- Enar Jumaniyazova
- Institute of Medicine, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
| | - Anna Aghajanyan
- Institute of Medicine, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
| | - Sergey Kurevlev
- Institute of Medicine, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
| | - Leyla Tskhovrebova
- Institute of Medicine, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
| | - Andrey Makarov
- Institute of Medicine, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
- Histology Department, Pirogov Russian National Research Medical University, Ministry of Healthcare of the Russian Federation, 117997 Moscow, Russia
| | - Konstantin Gordon
- Institute of Medicine, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
- A. Tsyb Medical Radiological Research Center, Branch of the National Medical Research Radiological Center of the Ministry of Health of the Russian Federation (A. Tsyb MRRC), 4, Korolev Street, 249036 Obninsk, Russia
| | - Anastasiya Lokhonina
- Institute of Medicine, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
| | - Timur Fatkhudinov
- Institute of Medicine, Peoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
- Avtsyn Research Institute of Human Morphology of Petrovsky National Research Centre of Surgery, 3 Tsyurupy Street, 117418 Moscow, Russia
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14
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Guo S, Guo Y, Chen Y, Cui S, Zhang C, Chen D. The role of CEMIP in cancers and its transcriptional and post-transcriptional regulation. PeerJ 2024; 12:e16930. [PMID: 38390387 PMCID: PMC10883155 DOI: 10.7717/peerj.16930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 01/22/2024] [Indexed: 02/24/2024] Open
Abstract
CEMIP is a protein known for inducing cell migration and binding to hyaluronic acid. Functioning as a hyaluronidase, CEMIP primarily facilitates the breakdown of the extracellular matrix component, hyaluronic acid, thereby regulating various signaling pathways. Recent evidence has highlighted the significant role of CEMIP in different cancers, associating it with diverse pathological states. While identified as a biomarker for several diseases, CEMIP's mechanism in cancer seems distinct. Accumulating data suggests that CEMIP expression is triggered by chemical modifications to itself and other influencing factors. Transcriptionally, chemical alterations to the CEMIP promoter and involvement of transcription factors such as AP-1, HIF, and NF-κB regulate CEMIP levels. Similarly, specific miRNAs have been found to post-transcriptionally regulate CEMIP. This review provides a comprehensive summary of CEMIP's role in various cancers and explores how both transcriptional and post-transcriptional mechanisms control its expression.
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Affiliation(s)
- Song Guo
- Shandong University of Technology, School of Life Sciences and Medicine, Zibo, Shandong, China
| | - Yunfei Guo
- Shandong University of Technology, School of Life Sciences and Medicine, Zibo, Shandong, China
| | - Yuanyuan Chen
- Shandong University of Technology, School of Life Sciences and Medicine, Zibo, Shandong, China
| | - Shuaishuai Cui
- Shandong University of Technology, School of Life Sciences and Medicine, Zibo, Shandong, China
| | - Chunmei Zhang
- Shandong University of Technology, School of Life Sciences and Medicine, Zibo, Shandong, China
| | - Dahu Chen
- Shandong University of Technology, School of Life Sciences and Medicine, Zibo, Shandong, China
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15
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Huang S, Peng J, Gan Y, Chen L, Zhu Z, Tian F, Ji L, Fan Y, Zhou C, Bao J. Jieduquyuziyin prescription enhances CD11a and CD70 DNA methylation of CD4 + T cells via miR-29b-sp1/DNMT1 pathway in MRL/lpr mice. JOURNAL OF ETHNOPHARMACOLOGY 2023; 317:116776. [PMID: 37343653 DOI: 10.1016/j.jep.2023.116776] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 05/31/2023] [Accepted: 06/10/2023] [Indexed: 06/23/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Jieduquyuziyin prescription (JP) is a traditional Chinese medicine utilized to treat systemic lupus erythematosus (SLE). Its efficacy has been confirmed through clinical trials and empirical evidence, leading to its authorized use in Chinese hospitals. The development of JP exemplifies the integration of traditional wisdom and scientific approaches, demonstrating the interdisciplinary essence of ethnopharmacology. These results emphasize the potential value of traditional medicine in addressing autoimmune disorders. AIM OF THE STUDY This study aims to address the effect of JP in MRL/lpr mice and elucidate the pharmacological mechanism by which JP targets CD11a and CD70 DNA methylation via the miR-29b-sp1/DNMT1 pathway. MATERIALS AND METHODS MRL/lpr mice were divided into three groups: the model group (received distilled water), the positive group (administered AAV/miR-29b-3p inhibitor), and the JP group (treated with JP decoction). C57BL/6 mice were constituted as a control group. Through ELISA assay, serum and urine samples were assessed for anti-dsDNA, TNF-α, TGF-β, IL-2, and UP. HE and Masson staining were conducted to reveal renal pathology. Genome DNA was extracted from CD4+ T cells of mice spleens to evaluate methylation level. The methylation of CD11a, CD70, and CD40L promoter regions was analyzed by targeted bisulfate sequencing. Their expression at the mRNA and protein levels was examined using quantitative real-time PCR, western blot analysis, immunohistochemistry, and immunofluorescence staining of kidney tissues. Furthermore, the molecular mechanisms underlying the regulation of the miR-29b-sp1/DNMT1 pathway by JP were explored with Jurkat cells transfected with miR-inhibitors or miR-mimics. RESULTS Mice treated with JP exhibited a significant decrease in anti-dsDNA, TNF-α, TGF-β, and UP, accompanied by a significant increase in IL-2. HE staining revealed JP effectively mitigated renal inflammatory response, while Masson staining indicated a reduction in collagen fiber content. In addition, JP exhibited a significant impact on the global hypomethylation of SLE, as evidenced by the induction of high methylation levels of CD11a and CD70 promoter regions, mediated through the miR-29b-sp1/DNMT1 pathway. CONCLUSION Our findings demonstrate JP exerts a protective effect against spontaneous SLE development, attenuates renal pathological changes, and functions as a miRNA inhibitor to enhance CD11a and CD70 DNA methylation through the modulation of the miR-29b-sp1/DNMT1 pathway.
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Affiliation(s)
- Shuo Huang
- Key Laboratory of Chinese Medicine Rheumatology of Zhejiang Province, School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
| | - Jiaqi Peng
- Key Laboratory of Chinese Medicine Rheumatology of Zhejiang Province, School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
| | - Yihong Gan
- Key Laboratory of Chinese Medicine Rheumatology of Zhejiang Province, School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
| | - Leiming Chen
- Department of Nephrology, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Wenzhou, Zhejiang, China.
| | - Zhengyang Zhu
- Department of Integrated Traditional Chinese and Western Medicine, Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, Zhejiang, China.
| | - Fengyuan Tian
- Key Laboratory of Chinese Medicine Rheumatology of Zhejiang Province, School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
| | - Lina Ji
- Department of Rheumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
| | - Yongsheng Fan
- Key Laboratory of Chinese Medicine Rheumatology of Zhejiang Province, School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
| | - Chuanlong Zhou
- Department of Acupuncture, The Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
| | - Jie Bao
- Key Laboratory of Chinese Medicine Rheumatology of Zhejiang Province, School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang, China.
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Qiu T, Hou L, Zhao L, Wang X, Zhou Z, Yang C, Zhang H, Jiang D, Jiao B, Chen C. SGCE promotes breast cancer stemness by promoting the transcription of FGF-BP1 by Sp1. J Biol Chem 2023; 299:105351. [PMID: 37838174 PMCID: PMC10641673 DOI: 10.1016/j.jbc.2023.105351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/13/2023] [Accepted: 09/18/2023] [Indexed: 10/16/2023] Open
Abstract
Breast cancer stem cells are mainly responsible for poor prognosis, especially in triple-negative breast cancer (TNBC). In a previous study, we demonstrated that ε-Sarcoglycan (SGCE), a type Ⅰ single-transmembrane protein, is a potential oncogene that promotes TNBC stemness by stabilizing EGFR. Here, we further found that SGCE depletion reduces breast cancer stem cells, partially through inhibiting the transcription of FGF-BP1, a secreted oncoprotein. Mechanistically, we demonstrate that SGCE could interact with the specific protein 1 transcription factor and translocate into the nucleus, which leads to an increase in the transcription of FGF-BP1, and the secreted FBF-BP1 activates FGF-FGFR signaling to promote cancer cell stemness. The novel SGCE-Sp1-FGF-BP1 axis provides novel potential candidate diagnostic markers and therapeutic targets for TNBC.
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Affiliation(s)
- Ting Qiu
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Kunming, Yunnan, China; Kunming College of Life sciences, University of Chinese Academy Sciences, Kunming, Yunnan, China
| | - Lei Hou
- Department of Breast Disease, Henan Breast Cancer Center, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China
| | - Lina Zhao
- Kunming College of Life sciences, University of Chinese Academy Sciences, Kunming, Yunnan, China; State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China
| | - Xinye Wang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Kunming, Yunnan, China
| | - Zhongmei Zhou
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Kunming, Yunnan, China
| | - Chuanyu Yang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Kunming, Yunnan, China
| | - Huifeng Zhang
- Department of Clinical Pharmacy, The First People's Hospital of Yunnan Province/The Affiliated Hospital of Kunming University of Science and Technology, Kunming, China
| | - Dewei Jiang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Kunming, Yunnan, China; Kunming College of Life sciences, University of Chinese Academy Sciences, Kunming, Yunnan, China.
| | - Baowei Jiao
- Department of Breast Disease, Henan Breast Cancer Center, Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, China.
| | - Ceshi Chen
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences, KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases, Kunming Institute of Zoology, Kunming, Yunnan, China; Academy of Biomedical Engineering, Kunming Medical University, Kunming, China; The Third Affiliated Hospital, Kunming Medical University, Kunming, China.
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Harrison KS, Wijesekera N, Robinson AGJ, Santos VC, Oakley RH, Cidlowski JA, Jones C. Impaired glucocorticoid receptor function attenuates herpes simplex virus 1 production during explant-induced reactivation from latency in female mice. J Virol 2023; 97:e0130523. [PMID: 37823644 PMCID: PMC10617412 DOI: 10.1128/jvi.01305-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 10/13/2023] Open
Abstract
IMPORTANCE A correlation exists between stress and increased episodes of human alpha-herpes virus 1 reactivation from latency. Stress increases corticosteroid levels; consequently, the glucocorticoid receptor (GR) is activated. Recent studies concluded that a GR agonist, but not an antagonist, accelerates productive infection and reactivation from latency. Furthermore, GR and certain stress-induced transcription factors cooperatively transactivate promoters that drive the expression of infected cell protein 0 (ICP0), ICP4, and VP16. This study revealed female mice expressing a GR containing a serine to alanine mutation at position 229 (GRS229A) shed significantly lower levels of infectious virus during explant-induced reactivation compared to male GRS229A or wild-type parental C57BL/6 mice. Furthermore, female GRS229A mice contained fewer VP16 + TG neurons compared to male GRS229A mice or wild-type mice during the early stages of explant-induced reactivation from latency. Collectively, these studies revealed that GR transcriptional activity has female-specific effects, whereas male mice can compensate for the loss of GR transcriptional activation.
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Affiliation(s)
- Kelly S. Harrison
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Nishani Wijesekera
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Anastasia G. J. Robinson
- National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
| | - Vanessa C. Santos
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Robert H. Oakley
- National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
| | - John A. Cidlowski
- National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, USA
| | - Clinton Jones
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, Stillwater, Oklahoma, USA
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Fosso E, Leo M, Muccillo L, Mandrone VM, Di Meo MC, Molinario A, Varricchio E, Sabatino L. Quercetin's Dual Mode of Action to Counteract the Sp1-miR-27a Axis in Colorectal Cancer Cells. Antioxidants (Basel) 2023; 12:1547. [PMID: 37627542 PMCID: PMC10451631 DOI: 10.3390/antiox12081547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 08/27/2023] Open
Abstract
Quercetin (Qc) inhibits cell proliferation and induces apoptosis in a variety of cancer cells. The molecular mechanism of action has not been fully elucidated; however, interplay with some miRNAs has been reported, specifically with miR-27a, an onco-miRNA overexpressed in several malignancies. Here, we show that Qc reduces cell viability and induces apoptosis in HCT116 and HT-29 colon cancer cells, by upregulating negative modulators of proliferation pathways such as Sprouty2, PTEN and SFRP1. These are targets of miR-27a whose high expression is reduced by Qc. Moreover, miR-23a, and miR-24-2, the two other components of the unique gene cluster, and the pri-miRNA transcript are reduced, evoking a transcriptional regulation of the entire cluster by Sp1. Mechanistically, we show that Qc is rapidly internalized and localizes in the nucleus, where it likely interacts with Sp1, inducing its proteasomal degradation. Sp1 is further repressed by ZBTB10, an Sp1 competitor for DNA binding that is an miR-27a target and whose levels increase following Qc. SP1 mRNA is also reduced, supporting the regulation of its own gene transcription. Finally, Sp1 knockdown elicits the impaired transcription of the entire cluster and the upregulation of the miR-27a targets, phenocopying the effects of Qc. Through this dual mode of action, Qc counteracts the protumoral Sp1-miR-27a axis, opening the way for novel therapies based on its association as neoadjuvant with known anticancer treatments.
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Affiliation(s)
| | | | | | | | | | | | | | - Lina Sabatino
- Department of Sciences and Technologies, University of Sannio, Via Francesco de Sanctis, 82100 Benevento, Italy; (E.F.); (M.L.); (L.M.); (V.M.M.); (M.C.D.M.); (A.M.); (E.V.)
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19
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Li X, Zhi Y, Li J, Lei X, Ju Y, Zhang Y, Zheng Y, Kong X, Xue F, Zhong W, Chen X, Tang J, Li X, Mao Y. Single-cell RNA sequencing to reveal non-parenchymal cell heterogeneity and immune network of acetaminophen-induced liver injury in mice. Arch Toxicol 2023; 97:1979-1995. [PMID: 37202523 DOI: 10.1007/s00204-023-03513-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 04/26/2023] [Indexed: 05/20/2023]
Abstract
The role of non-parenchymal cells (NPCs) in the early phase of acetaminophen (APAP)-induced liver injury (AILI) remains unclear. Therefore, single-cell sequencing (scRNA-seq) was performed to explore the heterogeneity and immune network of NPCs in the livers of mice with AILI. Mice were challenged with saline, 300 mg/kg APAP, or 750 mg/kg APAP (n = 3 for each group). After 3 h, the liver samples were collected, digested, and subjected to scRNA-seq. Immunohistochemistry and immunofluorescence were performed to confirm the expression of Makorin ring finger protein 1 (Mkrn1). We identified 14 distinct cell subtypes among the 120,599 cells. A variety of NPCs were involved, even in the early stages of AILI, indicating highly heterogeneous transcriptome dynamics. Cholangiocyte cluster 3, which had high deleted in malignant brain tumors 1 (Dmbt1) expression, was found to perform drug metabolism and detoxification functions. Liver sinusoidal endothelial cells exhibited fenestrae loss and angiogenesis. Macrophage cluster 1 displayed a M1 polarization phenotype, whereas cluster 3 tended to exhibit M2 polarization. Kupffer cells (KCs) exhibited pro-inflammatory effects due to the high expression of Cxcl2. qRT-PCR and western blotting verified that the LIFR-OSM axis might promote the activation of MAPK signaling pathway in RAW264.7 macrophages. Mkrn1 was highly expressed in the liver macrophages of AILI mice and AILI patients. Interaction patterns between macrophages/KCs and other NPCs were complex and diverse. NPCs were highly heterogeneous and were involved in the immune network during the early phase of AILI. In addition, we propose that Mkrn1 may serve as a potential biomarker of AILI.
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Affiliation(s)
- Xiaoyun Li
- Division of Gastroenterology and Hepatology, Shanghai Institute of Digestive Diseases, NHC Key Laboratory of Digestive Diseases, Shanghai Research Center of Fatty Liver Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yang Zhi
- Division of Gastroenterology and Hepatology, Shanghai Institute of Digestive Diseases, NHC Key Laboratory of Digestive Diseases, Shanghai Research Center of Fatty Liver Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jing Li
- Division of Gastroenterology and Hepatology, Shanghai Institute of Digestive Diseases, NHC Key Laboratory of Digestive Diseases, Shanghai Research Center of Fatty Liver Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaohong Lei
- Division of Gastroenterology and Hepatology, Shanghai Institute of Digestive Diseases, NHC Key Laboratory of Digestive Diseases, Shanghai Research Center of Fatty Liver Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yi Ju
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Yuting Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Yufan Zheng
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China
| | - Xiaming Kong
- Singleron Biotechnologies Ltd, Nanjing, Jiangsu, China
| | - Feng Xue
- Department of Liver Surgery and Liver Transplantation Center, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Wei Zhong
- Division of Gastroenterology and Hepatology, Shanghai Institute of Digestive Diseases, NHC Key Laboratory of Digestive Diseases, Shanghai Research Center of Fatty Liver Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoyu Chen
- Division of Gastroenterology and Hepatology, Shanghai Institute of Digestive Diseases, NHC Key Laboratory of Digestive Diseases, Shanghai Research Center of Fatty Liver Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jieting Tang
- Division of Gastroenterology and Hepatology, Shanghai Institute of Digestive Diseases, NHC Key Laboratory of Digestive Diseases, Shanghai Research Center of Fatty Liver Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
| | - Xiaobo Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Fudan University, Shanghai, 200032, China.
| | - Yimin Mao
- Division of Gastroenterology and Hepatology, Shanghai Institute of Digestive Diseases, NHC Key Laboratory of Digestive Diseases, Shanghai Research Center of Fatty Liver Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China.
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20
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Chen XQ, Ma J, Xu D, Xiang ZL. Comprehensive analysis of KLF2 as a prognostic biomarker associated with fibrosis and immune infiltration in advanced hepatocellular carcinoma. BMC Bioinformatics 2023; 24:270. [PMID: 37386390 PMCID: PMC10308631 DOI: 10.1186/s12859-023-05391-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/17/2023] [Indexed: 07/01/2023] Open
Abstract
PURPOSE Most Hepatocellular carcinoma (HCC) patients are in advanced or metastatic stage at the time of diagnosis. Prognosis for advanced HCC patients is dismal. This study was based on our previous microarray results, and aimed to explore the promising diagnostic and prognostic markers for advanced HCC by focusing on the important function of KLF2. METHODS The Cancer Genome Atlas (TCGA), Cancer Genome Consortium database (ICGC), and the Gene Expression Comprehensive Database (GEO) provided the raw data of this study research. The cBioPortal platform, CeDR Atlas platform, and the Human Protein Atlas (HPA) website were applied to analyze the mutational landscape and single-cell sequencing data of KLF2. Basing on the results of single-cell sequencing analyses, we further explored the molecular mechanism of KLF2 regulation in the fibrosis and immune infiltration of HCC. RESULTS Decreased KLF2 expression was discovered to be mainly regulated by hypermethylation, and indicated a poor prognosis of HCC. Single-cell level expression analyses revealed KLF2 was highly expressed in immune cells and fibroblasts. The function enrichment analysis of KLF2 targets indicated the crucial association between KLF2 and tumor matrix. 33-genes related with cancer associated fibroblasts (CAFs) were collected to identify the significant association of KLF2 with fibrosis. And SPP1 was validated as a promising prognostic and diagnostic marker for advanced HCC patients. CXCR6 CD8+ T cells were noted as a predominant proportion in the immune microenvironment, and T cell receptor CD3D was discovered to be a potential therapeutic biomarker for HCC immunotherapy. CONCLUSION This study identified that KLF2 is an important factor promoting HCC progression by affecting the fibrosis and immune infiltration, highlighting its great potential as a novel prognostic biomarker for advanced HCC.
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Affiliation(s)
- Xue-Qin Chen
- Department of Radiation Oncology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200120, China
| | - Jie Ma
- Department of Radiation Oncology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200120, China
| | - Di Xu
- Department of Radiation Oncology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200120, China
| | - Zuo-Lin Xiang
- Department of Radiation Oncology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, 200120, China.
- Department of Radiation Oncology, Shanghai East Hospital Ji'an hospital, Jiangxi, 343000, China.
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21
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Gao H, Tuluhong D, Li X, Zhu Y, Xu C, Wang J, Li H, Wang S, Ding W. CircSNX25 mediated by SP1 promotes the carcinogenesis and development of triple-negative breast cancer. Cell Signal 2023:110776. [PMID: 37331414 DOI: 10.1016/j.cellsig.2023.110776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 06/08/2023] [Accepted: 06/14/2023] [Indexed: 06/20/2023]
Abstract
Circular RNAs (circRNAs), according to a growing body of research, are thought to be important in the initiation and development of a number of cancers. However, more research is needed to fully understand how circRNAs work at the molecular level in triple-negative breast cancer (TNBC). RNA sequencing was conducted on four sets of TNBC samples and their corresponding adjacent noncancerous tissues (ANTs). The circSNX25 expression was assessed using quantitative real-time PCR in TNBC tissues and cells. Several in vitro and in vivo experiments were conducted in order to examine the function of circSNX25 in TNBC carcinogenesis. Through luciferase reporter and chromatin immunoprecipitation (ChIP) assays, we also investigated the potential regulation of circSNX25 biogenesis by specificity protein 1 (SP1). To further validate the relationship between circSNX25 and COPI coat complex subunit beta 1 (COPB1) in TNBC, we conducted circRNA pull-down and RNA immunoprecipitation (RIP) assays using the MS2/MS2-CP system. Online databases were analyzed to examine the clinical implications and prognostic value of COPB1 in TNBC. A higher circSNX25 expression levels were observed in tissues and cells of TNBC. Silencing circSNX25 notably inhibited TNBC cell proliferation, triggered apoptosis, and hindered tumor growth in vivo. Conversely, upregulation of circSNX25 had the opposite effects. Mechanistically, circSNX25 was found to physically interact with COPB1. Importantly, we identified that SP1 may enhance circSNX25 biogenesis. COPB1 levels were markedly higher in TNBC cells. Analysis of online databases revealed that TNBC patients with elevated COPB1 levels had a poorer prognosis. Our findings demonstrate that SP1-mediated circSNX25 promotes TNBC carcinogenesis and development. CircSNX25 may therefore serve as both a diagnostic and therapeutic biomarker for TNBC patients.
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Affiliation(s)
- Hongyu Gao
- Research Institute of General Surgery, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, No. 305 East Zhongshan Road, Nanjing, Jiangsu 210002, China
| | - Dilihumaer Tuluhong
- Research Institute of General Surgery, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, No. 305 East Zhongshan Road, Nanjing, Jiangsu 210002, China
| | - Xinfang Li
- Research Institute of General Surgery, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, No. 305 East Zhongshan Road, Nanjing, Jiangsu 210002, China
| | - Yueyun Zhu
- Research Institute of General Surgery, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, No. 305 East Zhongshan Road, Nanjing, Jiangsu 210002, China; General Surgery, Nanjing Maternity and Child Health Care Hospital, Woman's Hospital of Nanjing Medical University, No. 123 Tianfei Xiang, Mochou Road, Nanjing, Jiangsu 210002, China
| | - Cheng Xu
- Research Institute of General Surgery, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, No. 305 East Zhongshan Road, Nanjing, Jiangsu 210002, China; General Surgery, Nanjing Maternity and Child Health Care Hospital, Woman's Hospital of Nanjing Medical University, No. 123 Tianfei Xiang, Mochou Road, Nanjing, Jiangsu 210002, China
| | - Jingjie Wang
- Research Institute of General Surgery, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, No. 305 East Zhongshan Road, Nanjing, Jiangsu 210002, China; General Surgery, Nanjing Maternity and Child Health Care Hospital, Woman's Hospital of Nanjing Medical University, No. 123 Tianfei Xiang, Mochou Road, Nanjing, Jiangsu 210002, China
| | - Hanjun Li
- Research Institute of General Surgery, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, No. 305 East Zhongshan Road, Nanjing, Jiangsu 210002, China; General Surgery, Nanjing Maternity and Child Health Care Hospital, Woman's Hospital of Nanjing Medical University, No. 123 Tianfei Xiang, Mochou Road, Nanjing, Jiangsu 210002, China
| | - Shaohua Wang
- Research Institute of General Surgery, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, No. 305 East Zhongshan Road, Nanjing, Jiangsu 210002, China; General Surgery, Nanjing Maternity and Child Health Care Hospital, Woman's Hospital of Nanjing Medical University, No. 123 Tianfei Xiang, Mochou Road, Nanjing, Jiangsu 210002, China.
| | - Weiwei Ding
- Division of Trauma and Surgical Intensive Care Unit, Research Institute of General Surgery, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, No. 305 East Zhongshan Road, Nanjing, Jiangsu 210002, China.
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22
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Bhatnagar P, Bajpai P, Shrinet J, Kaja MK, Chandele A, Sitaraman R. Prediction of human protein interactome of dengue virus non-structural protein 5 (NS5) and its downstream immunological implications. 3 Biotech 2023; 13:180. [PMID: 37193327 PMCID: PMC10182223 DOI: 10.1007/s13205-023-03569-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 04/19/2023] [Indexed: 05/18/2023] Open
Abstract
The non-structural protein 5 (NS5) is the most conserved protein among flaviviruses, a family that includes the dengue virus. It functions both as an RNA-dependent RNA polymerase and an RNA-methyltransferase and is therefore essential for the replication of viral RNA. The discovery that dengue virus NS5 protein (DENV-NS5) can also localize to the nucleus has resulted in renewed interest in its potential roles at the host-virus interface. In this study, we have used two complementary computational approaches in parallel - one based on linear motifs (ELM) and another based on tertiary structure of the protein (DALI) - to predict the host proteins that DENV-NS5 might interact with. Of the 42 human proteins predicted by both these methods, 34 are novel. Pathway analysis of these 42 human proteins shows that they are involved in key host cellular processes related to cell cycle regulation, proliferation, protein degradation, apoptosis, and immune responses. A focused analysis of transcription factors that directly interact with the predicted DENV-NS5 interacting proteins was performed, followed by the identification of downstream genes that are differentially expressed after dengue infection using previously published RNA-seq data. Our study provides unique insights into the DENV-NS5 interaction network and delineates mechanisms whereby DENV-NS5 could impact the host-virus interface. The novel interactors identified in this study could be potentially targeted by NS5 to modulate the host cellular environment in general, and the immune response in particular, thereby extending the role of DENV-NS5 beyond its known enzymatic functions. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-023-03569-0.
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Affiliation(s)
- Priya Bhatnagar
- Department of Biotechnology, TERI School of Advanced Studies, New Delhi, India
- ICGEB-Emory Vaccine Centre, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Prashant Bajpai
- ICGEB-Emory Vaccine Centre, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
| | - Jatin Shrinet
- Department of Biological Science, Florida State University, Tallahassee, FL 32306 USA
| | - Murali Krishna Kaja
- ICGEB-Emory Vaccine Centre, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
- Department of Pediatrics and Emory Vaccine Centre, Emory University School of Medicine, Atlanta, GA USA
| | - Anmol Chandele
- ICGEB-Emory Vaccine Centre, International Centre for Genetic Engineering and Biotechnology (ICGEB), New Delhi, India
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23
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Kim D, Orr MJ, Kwong AJ, Deibler KK, Munshi HH, Bridges CS, Chen TJ, Zhang X, Lacorazza HD, Scheidt KA. Rational Design of Highly Potent and Selective Covalent MAP2K7 Inhibitors. ACS Med Chem Lett 2023; 14:606-613. [PMID: 37197477 PMCID: PMC10184151 DOI: 10.1021/acsmedchemlett.3c00029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 04/10/2023] [Indexed: 05/19/2023] Open
Abstract
The mitogen-activated protein kinase signaling cascade is conserved across eukaryotes, where it plays a critical role in the regulation of activities including proliferation, differentiation, and stress responses. This pathway propagates external stimuli through a series of phosphorylation events, which allows external signals to influence metabolic and transcriptional activities. Within the cascade, MEK, or MAP2K, enzymes occupy a molecular crossroads immediately upstream to significant signal divergence and cross-talk. One such kinase, MAP2K7, also known as MEK7 and MKK7, is a protein of great interest in the molecular pathophysiology underlying pediatric T cell acute lymphoblastic leukemia (T-ALL). Herein, we describe the rational design, synthesis, evaluation, and optimization of a novel class of irreversible MAP2K7 inhibitors. With a streamlined one-pot synthesis, favorable in vitro potency and selectivity, and promising cellular activity, this novel class of compounds wields promise as a powerful tool in the study of pediatric T-ALL.
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Affiliation(s)
- Dalton
R. Kim
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Meghan J. Orr
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Ada J. Kwong
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Kristine K. Deibler
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Hasan H. Munshi
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Cory Seth Bridges
- Department
of Pathology & Immunology, Baylor College
of Medicine, Houston, Texas 77030, United States
| | - Taylor Jie Chen
- Department
of Pathology & Immunology, Baylor College
of Medicine, Houston, Texas 77030, United States
| | - Xiaoyu Zhang
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Chemistry
of Life Processes Institute, Northwestern
University, Evanston, Illinois 60208, United
States
| | - H. Daniel Lacorazza
- Department
of Pathology & Immunology, Baylor College
of Medicine, Houston, Texas 77030, United States
| | - Karl A. Scheidt
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Chemistry
of Life Processes Institute, Northwestern
University, Evanston, Illinois 60208, United
States
- Department
of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois 60611, United States
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24
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Yang Q, Al-Hendy A. The Functional Role and Regulatory Mechanism of FTO m 6A RNA Demethylase in Human Uterine Leiomyosarcoma. Int J Mol Sci 2023; 24:7957. [PMID: 37175660 PMCID: PMC10178470 DOI: 10.3390/ijms24097957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Uterine leiomyosarcoma (uLMS) is the most frequent subtype of uterine sarcoma that presents a poor prognosis and high rates of recurrence and metastasis. The origin and molecular mechanism underlying and driving its clinical and biological behavior remain largely unknown. Recently, we and others have revealed the role of microRNAs, DNA methylation, and histone modifications in contributing to the pathogenesis of uLMS. However, the connection between reversible m6A RNA methylation and uLMS pathogenesis remains unclear. In this study, we assessed the role and mechanism of FTO m6A RNA demethylase in the pathogenesis of uLMS. Immunohistochemistry analysis revealed that the levels of RNA demethylases FTO and ALKBH5 were aberrantly upregulated in uLMS tissues compared to adjacent myometrium with a significant change by histochemical scoring assessment (p < 0.01). Furthermore, the inhibition of FTO demethylase with its small, potent inhibitor (Dac51) significantly decreased the uLMS proliferation dose-dependently via cell cycle arrest. Notably, RNA-seq analysis revealed that the inhibition of FTO with Dac51 exhibited a significant decrease in cell-cycle-related genes, including several CDK members, and a significant increase in the expression of CDKN1A, which correlated with a Dac51-exerted inhibitory effect on cell proliferation. Moreover, Dac51 treatment allowed the rewiring of several critical pathways, including TNFα signaling, KRAS signaling, inflammation response, G2M checkpoint, and C-Myc signaling, among others, leading to the suppression of the uLMS phenotype. Moreover, transcription factor (TF) analyses suggested that epitranscriptional alterations by Dac51 may alter the cell cycle-related gene expression via TF-driven pathways and epigenetic networks in uLMS cells. This intersection of RNA methylation and other epigenetic controls and pathways provides a framework to better understand uterine diseases, particularly uLMS pathogenesis with a dysregulation of RNA methylation machinery. Therefore, targeting the vulnerable epitranscriptome may provide an additional regulatory layer for a promising and novel strategy for treating patients with this aggressive uterine cancer.
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Affiliation(s)
- Qiwei Yang
- Department of Obstetrics and Gynecology, University of Chicago, Chicago, IL 60637, USA
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25
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Mahmoudian RA, Akhlaghipour I, Lotfi M, Shahidsales S, Moghbeli M. Circular RNAs as the pivotal regulators of epithelial-mesenchymal transition in gastrointestinal tumor cells. Pathol Res Pract 2023; 245:154472. [PMID: 37087995 DOI: 10.1016/j.prp.2023.154472] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/11/2023] [Accepted: 04/18/2023] [Indexed: 04/25/2023]
Abstract
Gastrointestinal (GI) cancers, as the most common human malignancies are always considered one of the most important health challenges in the world. Late diagnosis in advanced tumor stages is one of the main reasons for the high mortality rate and treatment failure in these patients. Therefore, investigating the molecular pathways involved in GI tumor progression is required to introduce the efficient markers for the early tumor diagnosis. Epithelial-mesenchymal transition (EMT) is one of the main cellular mechanisms involved in the GI tumor metastasis. Non-coding RNAs (ncRNAs) are one of the main regulatory factors in EMT process. Circular RNAs (circRNAs) are a group of covalently closed loop ncRNAs that have higher stability in body fluids compared with other ncRNAs. Considering the importance of circRNAs in regulation of EMT process, in the present review we discussed the role of circRNAs in EMT process during GI tumor invasion. It has been reported that circRNAs mainly affect the EMT process through the regulation of EMT-specific transcription factors and signaling pathways such as WNT, PI3K/AKT, TGF-β, and MAPK. This review can be an effective step in introducing a circRNA/EMT based diagnostic panel marker for the early tumor detection among GI cancer patients.
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Affiliation(s)
- Reihaneh Alsadat Mahmoudian
- Basic Sciences Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran; Cancer Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Iman Akhlaghipour
- Student Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Malihe Lotfi
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Meysam Moghbeli
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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26
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Li ZY, Zhu YX, Chen JR, Chang X, Xie ZZ. The role of KLF transcription factor in the regulation of cancer progression. Biomed Pharmacother 2023; 162:114661. [PMID: 37068333 DOI: 10.1016/j.biopha.2023.114661] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/03/2023] [Accepted: 04/03/2023] [Indexed: 04/19/2023] Open
Abstract
Kruppel-like factors (KLFs) are a family of zinc finger transcription factors that have been found to play an essential role in the development of various human tissues, including epithelial, teeth, and nerves. In addition to regulating normal physiological processes, KLFs have been implicated in promoting the onset of several cancers, such as gastric cancer, lung cancer, breast cancer, liver cancer, and colon cancer. To inhibit cancer progression, various existing medicines have been used to modulate the expression of KLFs, and anti-microRNA treatments have also emerged as a potential strategy for many cancers. Investigating the possibility of targeting KLFs in cancer therapy is urgently needed, as the roles of KLFs in cancer have not received enough attention in recent years. This review summarizes the factors that regulate KLF expression and function at both the transcriptional and posttranscriptional levels, which could aid in understanding the mechanisms of KLFs in cancer progression. We hope that this review will contribute to the development of more effective anti-cancer medicines targeting KLFs in the future.
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Affiliation(s)
- Zi-Yi Li
- College of Basic Medical, Nanchang University, Nanchang, Jiangxi 330006, PR China; Queen Mary School, Medical Department, Nanchang University, Nanchang, Jiangxi 330006, PR China
| | - Yu-Xin Zhu
- College of Basic Medical, Nanchang University, Nanchang, Jiangxi 330006, PR China; Queen Mary School, Medical Department, Nanchang University, Nanchang, Jiangxi 330006, PR China
| | - Jian-Rui Chen
- College of Basic Medical, Nanchang University, Nanchang, Jiangxi 330006, PR China; Queen Mary School, Medical Department, Nanchang University, Nanchang, Jiangxi 330006, PR China
| | - Xu Chang
- College of Basic Medical, Nanchang University, Nanchang, Jiangxi 330006, PR China; Queen Mary School, Medical Department, Nanchang University, Nanchang, Jiangxi 330006, PR China
| | - Zhen-Zhen Xie
- College of Basic Medical, Nanchang University, Nanchang, Jiangxi 330006, PR China; Experimental teaching center of Basic Medical College, Nanchang University, Nanchang, Jiangxi 330006, PR China.
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27
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Fitzgerald G, Low D, Morgan L, Hilt C, Benford M, Akers C, Hornback S, Hilt JZ, Scott D. Controlled Release of DNA Binding Anticancer Drugs from Gold Nanoparticles with Near-Infrared Radiation. J Pharm Sci 2023; 112:1064-1071. [PMID: 36493881 PMCID: PMC10033344 DOI: 10.1016/j.xphs.2022.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 12/01/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022]
Abstract
Traditional chemotherapies target rapidly developing cells in the human body resulting in harsh side effects including fatigue, immune system suppression, and nausea, among others. Delivery systems to focus the active pharmaceutical ingredients (APIs) to the diseased tissue can diminish the negative side effects while improving treatment outcomes. Gold nanoparticles (AuNP) offer many unique advantages as drug delivery vehicles, including being biologically inert, easily adaptable to various shapes and sizes, able to create a strong Au-thiol bond, and able to generate heat upon the absorption of near-infrared light. To this end, a AuNP delivery vehicle was engineered to load and release two DNA binding anti-cancer drugs, mithramycin and doxorubicin, in a controlled fashion. The drugs were loaded onto the surface of the AuNP with temperature sensitive linkages. The amount of heat generated, and subsequent release of the drugs was controlled by the irradiation time with a near-infrared laser. By modulating the linkage used to load the drugs three different release profiles were able to be achieved, indicating the feasibility of such a system for combinational therapy requiring sequential release of APIs.
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Affiliation(s)
- Gracie Fitzgerald
- Department of Chemistry, Centre College, Danville, KY 40422, United States
| | - Daniel Low
- Department of Chemistry, Centre College, Danville, KY 40422, United States
| | - Luc Morgan
- Department of Chemistry, Centre College, Danville, KY 40422, United States
| | - Cole Hilt
- Department of Chemistry, Centre College, Danville, KY 40422, United States
| | - Micai Benford
- Department of Chemistry, Centre College, Danville, KY 40422, United States
| | - Caleb Akers
- Department of Chemistry and Biochemistry, DePauw University, Greencastle, IN 46135, United States
| | - Skyler Hornback
- Department of Chemical Engineering, University of Kentucky, Lexington, KY 40506, United States
| | - J Zach Hilt
- Department of Chemical Engineering, University of Kentucky, Lexington, KY 40506, United States
| | - Daniel Scott
- Department of Chemistry, Centre College, Danville, KY 40422, United States.
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Yang BA, Larouche JA, Sabin KM, Fraczek PM, Parker SCJ, Aguilar CA. Three-dimensional chromatin re-organization during muscle stem cell aging. Aging Cell 2023; 22:e13789. [PMID: 36727578 PMCID: PMC10086523 DOI: 10.1111/acel.13789] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 12/29/2022] [Accepted: 01/11/2023] [Indexed: 02/03/2023] Open
Abstract
Age-related skeletal muscle atrophy or sarcopenia is a significant societal problem that is becoming amplified as the world's population continues to increase. The regeneration of damaged skeletal muscle is mediated by muscle stem cells, but in old age muscle stem cells become functionally attenuated. The molecular mechanisms that govern muscle stem cell aging encompass changes across multiple regulatory layers and are integrated by the three-dimensional organization of the genome. To quantitatively understand how hierarchical chromatin architecture changes during muscle stem cell aging, we generated 3D chromatin conformation maps (Hi-C) and integrated these datasets with multi-omic (chromatin accessibility and transcriptome) profiles from bulk populations and single cells. We observed that muscle stem cells display static behavior at global scales of chromatin organization during aging and extensive rewiring of local contacts at finer scales that were associated with variations in transcription factor binding and aberrant gene expression. These data provide insights into genome topology as a regulator of molecular function in stem cell aging.
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Affiliation(s)
- Benjamin A. Yang
- Department of Biomedical EngineeringUniversity of MichiganAnn ArborMichiganUSA
- Biointerfaces InstituteUniversity of MichiganAnn ArborMichiganUSA
| | - Jacqueline A. Larouche
- Department of Biomedical EngineeringUniversity of MichiganAnn ArborMichiganUSA
- Biointerfaces InstituteUniversity of MichiganAnn ArborMichiganUSA
| | - Kaitlyn M. Sabin
- Department of Biomedical EngineeringUniversity of MichiganAnn ArborMichiganUSA
- Biointerfaces InstituteUniversity of MichiganAnn ArborMichiganUSA
| | - Paula M. Fraczek
- Department of Biomedical EngineeringUniversity of MichiganAnn ArborMichiganUSA
- Biointerfaces InstituteUniversity of MichiganAnn ArborMichiganUSA
| | - Stephen C. J. Parker
- Program in Cellular and Molecular BiologyUniversity of MichiganAnn ArborMichiganUSA
- Department of Computational Medicine & BioinformaticsUniversity of MichiganAnn ArborMichiganUSA
- Department of Human GeneticsUniversity of MichiganAnn ArborMichiganUSA
| | - Carlos A. Aguilar
- Department of Biomedical EngineeringUniversity of MichiganAnn ArborMichiganUSA
- Biointerfaces InstituteUniversity of MichiganAnn ArborMichiganUSA
- Program in Cellular and Molecular BiologyUniversity of MichiganAnn ArborMichiganUSA
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Yerra VG, Drosatos K. Specificity Proteins (SP) and Krüppel-like Factors (KLF) in Liver Physiology and Pathology. Int J Mol Sci 2023; 24:4682. [PMID: 36902112 PMCID: PMC10003758 DOI: 10.3390/ijms24054682] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 03/04/2023] Open
Abstract
The liver acts as a central hub that controls several essential physiological processes ranging from metabolism to detoxification of xenobiotics. At the cellular level, these pleiotropic functions are facilitated through transcriptional regulation in hepatocytes. Defects in hepatocyte function and its transcriptional regulatory mechanisms have a detrimental influence on liver function leading to the development of hepatic diseases. In recent years, increased intake of alcohol and western diet also resulted in a significantly increasing number of people predisposed to the incidence of hepatic diseases. Liver diseases constitute one of the serious contributors to global deaths, constituting the cause of approximately two million deaths worldwide. Understanding hepatocyte transcriptional mechanisms and gene regulation is essential to delineate pathophysiology during disease progression. The current review summarizes the contribution of a family of zinc finger family transcription factors, named specificity protein (SP) and Krüppel-like factors (KLF), in physiological hepatocyte functions, as well as how they are involved in the onset and development of hepatic diseases.
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Affiliation(s)
| | - Konstantinos Drosatos
- Metabolic Biology Laboratory, Cardiovascular Center, Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
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Newborns from Mothers Who Intensely Consumed Sucralose during Pregnancy Are Heavier and Exhibit Markers of Metabolic Alteration and Low-Grade Systemic Inflammation: A Cross-Sectional, Prospective Study. Biomedicines 2023; 11:biomedicines11030650. [PMID: 36979631 PMCID: PMC10045555 DOI: 10.3390/biomedicines11030650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 02/16/2023] [Accepted: 02/19/2023] [Indexed: 02/24/2023] Open
Abstract
Robust data in animals show that sucralose intake during gestation can predispose the offspring to weight gain, metabolic disturbances, and low-grade systemic inflammation; however, concluding information remains elusive in humans. In this cross-sectional, prospective study, we examined the birth weight, glucose and insulin cord blood levels, monocyte subsets, and inflammatory cytokine profile in 292 neonates at term from mothers with light sucralose ingestion (LSI) of less than 60 mg sucralose/week or heavy sucralose intake (HSI) of more than 36 mg sucralose/day during pregnancy. Mothers in the LSI (n = 205) or HSI (n = 87) groups showed no differences in age, pregestational body mass index, blood pressure, and glucose tolerance. Although there were no differences in glucose, infants from HSI mothers displayed significant increases in birth weight and insulin compared to newborns from LSI mothers. Newborns from HSI mothers showed a substantial increase in the percentage of inflammatory nonclassical monocytes compared to neonates from LSI mothers. Umbilical cord tissue of infants from HSI mothers exhibited higher IL-1 beta and TNF-alpha with lower IL-10 expression than that found in newborns from LSI mothers. Present results demonstrate that heavy sucralose ingestion during pregnancy affects neonates’ anthropometric, metabolic, and inflammatory features.
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Tseng TY, Lee CH, Lee HL, Su CY, Kao CY, Tsai JP, Hsieh YH. Licochalcone A Suppresses Renal Cancer Cell Proliferation and Metastasis by Engagement of Sp1-Mediated LC3 Expression. Pharmaceutics 2023; 15:pharmaceutics15020684. [PMID: 36840005 PMCID: PMC9966374 DOI: 10.3390/pharmaceutics15020684] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/14/2023] [Accepted: 02/15/2023] [Indexed: 02/19/2023] Open
Abstract
Licochalcone A (LicA) is a strong anti-inflammatory, antioxidant, and anticarcinogenic substance that is useful against a variety of human malignancies. However, its precise mechanism in mediating the development of renal cell carcinoma (RCC) is not entirely understood. In this work, LicA was discovered to limit cell growth and survival, induce cell cycle arrest, promote autophagy and LC3B expression, and inhibit the migration and invasion of RCC cells. In addition, the proliferation, migration, and invasion inhibited by LicA were restored by the transfection of siRNA-LC3. The effects of LC3B on the metastatic phenotype of ACHN cells was enhanced with the overexpression of Sp1 or suppressed by inhibiting the phosphorylation of FAK and Src. Finally, LicA showed antitumor properties against RCC in an in vivo xenograft model. In conclusion, our study demonstrated the chemotherapeutic potential of LicA on proliferation, migration, invasion, and autophagy through the activation of LC3B expression, ultimately modulating FAK/Src signaling pathway-mediated Sp1 expression. These findings illustrate the novel role and molecular mechanisms of LicA against RCC cells.
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Affiliation(s)
- Tsai-Yi Tseng
- Institute of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan
- Division of Pediatric Surgery, Department of Surgery, Children’s Hospital of China Medical University, Taichung 404333, Taiwan
| | - Chien-Hsing Lee
- Division of Pediatric Surgery, Department of Surgery, Children’s Hospital of China Medical University, Taichung 404333, Taiwan
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 404333, Taiwan
| | - Hsiang-Lin Lee
- Department of Surgery, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
- School of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Chien-Yu Su
- Institute of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan
| | - Cheng-Yen Kao
- Institute of Microbiology and Immunology, College of Life Sciences, National Yang Ming Chiao Tung University, Taipei 11221, Taiwan
| | - Jen-Pi Tsai
- School of Medicine, Tzu Chi University, Hualien 970374, Taiwan
- Division of Nephrology, Department of Internal Medicine, Dalin Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Chiayi 62247, Taiwan
- Correspondence: (J.-P.T.); (Y.-H.H.)
| | - Yi-Hsien Hsieh
- Institute of Medicine, Chung Shan Medical University, Taichung 40201, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung 40201, Taiwan
- Correspondence: (J.-P.T.); (Y.-H.H.)
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Hulshoff MS, Schellinger IN, Xu X, Fledderus J, Rath SK, Wong FC, Maamari S, Haunschild J, Krenning G, Raaz U, Zeisberg EM. miR-132-3p and KLF7 as novel regulators of aortic stiffening-associated EndMT in type 2 diabetes mellitus. Diabetol Metab Syndr 2023; 15:11. [PMID: 36698180 PMCID: PMC9875453 DOI: 10.1186/s13098-022-00966-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 12/09/2022] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The prevalence of diabetes mellitus has risen considerably and currently affects more than 422 million people worldwide. Cardiovascular diseases including myocardial infarction and heart failure represent the major cause of death in type 2 diabetes (T2D). Diabetes patients exhibit accelerated aortic stiffening which is an independent predictor of cardiovascular disease and mortality. We recently showed that aortic stiffness precedes hypertension in a mouse model of diabetes (db/db mice), making aortic stiffness an early contributor to cardiovascular disease development. Elucidating how aortic stiffening develops is a pressing need in order to halt the pathophysiological process at an early time point. METHODS To assess EndMT occurrence, we performed co-immunofluorescence staining of an endothelial marker (CD31) with mesenchymal markers (α-SMA/S100A4) in aortic sections from db/db mice. Moreover, we performed qRT-PCR to analyze mRNA expression of EndMT transcription factors in aortic sections of db/db mice and diabetic patients. To identify the underlying mechanism by which EndMT contributes to aortic stiffening, we used aortas from db/db mice and diabetic patients in combination with high glucose-treated human umbilical vein endothelial cells (HUVECs) as an in vitro model of diabetes-associated EndMT. RESULTS We demonstrate robust CD31/α-SMA and CD31/S100A4 co-localization in aortic sections of db/db mice which was almost absent in control mice. Moreover, we demonstrate a significant upregulation of EndMT transcription factors in aortic sections of db/db mice and diabetic patients. As underlying regulator, we identified miR-132-3p as the most significantly downregulated miR in the micronome of db/db mice and high glucose-treated HUVECs. Indeed, miR-132-3p was also significantly downregulated in aortic tissue from diabetic patients. We identified Kruppel-like factor 7 (KLF7) as a target of miR-132-3p and show a significant upregulation of KLF7 in aortic sections of db/db mice and diabetic patients as well as in high glucose-treated HUVECs. We further demonstrate that miR-132-3p overexpression and KLF7 downregulation ameliorates EndMT in high glucose-treated HUVECs. CONCLUSIONS We demonstrate for the first time that EndMT contributes to aortic stiffening in T2D. We identified miR-132-3p and KLF7 as novel EndMT regulators in this context. Altogether, this gives us new insights in the development of aortic stiffening in T2D.
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Affiliation(s)
- Melanie S Hulshoff
- Department of Cardiology and Pneumology, University Medical Center Göttingen, Georg-August-University, Robert-Koch-Str. 40, 37075, Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site, Göttingen, Germany
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Isabel N Schellinger
- University Heart Center, Göttingen, Germany
- Department of Endocrinology, Nephrology and Rheumatology, University of Leipzig Medical Center, Leipzig, Germany
| | - Xingbo Xu
- Department of Cardiology and Pneumology, University Medical Center Göttingen, Georg-August-University, Robert-Koch-Str. 40, 37075, Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site, Göttingen, Germany
- University Heart Center, Göttingen, Germany
| | - Jolien Fledderus
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Sandip K Rath
- Department of Cardiology and Pneumology, University Medical Center Göttingen, Georg-August-University, Robert-Koch-Str. 40, 37075, Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site, Göttingen, Germany
| | - Fang Cheng Wong
- Department of Cardiology and Pneumology, University Medical Center Göttingen, Georg-August-University, Robert-Koch-Str. 40, 37075, Göttingen, Germany
| | - Sabine Maamari
- Department of Cardiology and Pneumology, University Medical Center Göttingen, Georg-August-University, Robert-Koch-Str. 40, 37075, Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site, Göttingen, Germany
- University Heart Center, Göttingen, Germany
| | - Josephina Haunschild
- University Department for Cardiac Surgery, Leipzig Heart Center, Leipzig, Germany
| | - Guido Krenning
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Uwe Raaz
- Department of Cardiology and Pneumology, University Medical Center Göttingen, Georg-August-University, Robert-Koch-Str. 40, 37075, Göttingen, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site, Göttingen, Germany
- University Heart Center, Göttingen, Germany
| | - Elisabeth M Zeisberg
- Department of Cardiology and Pneumology, University Medical Center Göttingen, Georg-August-University, Robert-Koch-Str. 40, 37075, Göttingen, Germany.
- German Center for Cardiovascular Research (DZHK), Partner Site, Göttingen, Germany.
- University Heart Center, Göttingen, Germany.
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Chen H, Li LL, Du Y. Krüppel-like factor 15 in liver diseases: Insights into metabolic reprogramming. Front Pharmacol 2023; 14:1115226. [PMID: 36937859 PMCID: PMC10017497 DOI: 10.3389/fphar.2023.1115226] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Accepted: 02/14/2023] [Indexed: 03/06/2023] Open
Abstract
Liver diseases, characterized by metabolic disorder, have become a global public health problem with high morbidity and mortality. Krüppel-like factor 15 (KLF15) is a zinc-finger transcription factor mainly enriched in liver. Increasing evidence suggests that hepatic KLF15 is activated rapidly during fasting, and contributes to the regulation of gluconeogenesis, lipid, amino acid catabolism, bile acids, endobiotic and xenobiotic metabolism. This review summarizes the latest advances of KLF15 in metabolic reprogramming, and explore the function of KLF15 in acute liver injury, hepatitis B virus, and autoimmune hepatitis. which aims to evaluate the potential of KLF15 as a therapeutic target and prognostic biomarker for liver diseases.
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Affiliation(s)
- Hao Chen
- Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- The Grade 3 Pharmaceutical Chemistry Laboratory of State Administration of Traditional Chinese Medicine, Hefei, Anhui, China
| | - Lan-Lan Li
- Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- The Grade 3 Pharmaceutical Chemistry Laboratory of State Administration of Traditional Chinese Medicine, Hefei, Anhui, China
| | - Yan Du
- Department of Pharmacy, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, China
- The Grade 3 Pharmaceutical Chemistry Laboratory of State Administration of Traditional Chinese Medicine, Hefei, Anhui, China
- *Correspondence: Yan Du,
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Mukai-Sasaki Y, Liao Z, Yang D, Inoue T. Modulators of radiation-induced cardiopulmonary toxicities for non-small cell lung cancer: Integrated cytokines, single nucleotide variants, and HBP systems imaging. Front Oncol 2022; 12:984364. [PMID: 36591530 PMCID: PMC9797663 DOI: 10.3389/fonc.2022.984364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 11/21/2022] [Indexed: 12/23/2022] Open
Abstract
Radiation therapy (RT)-induced cardiopulmonary toxicities remain dose-limiting toxicities for patients receiving radiation dosages to the thorax, especially for lung cancer. Means of monitoring and predicting for those receiving RT or concurrent chemoradiation therapy before treatment begins in individual patients could benefit early intervention to prevent or minimize RT-induced side effects. Another aspect of an individual's susceptibility to the adverse effects of thoracic irradiation is the immune system as reflected by phenotypic factors (patterns of cytokine expressions), genotypic factors (single nucleotide variants SNVs; formerly single nucleotide polymorphisms [SNPs]), and aspects of quantitative cellular imaging. Levels of transcription, production, and functional activity of cytokines are often influenced by SNVs that affect coding regions in the promoter or regulatory regions of cytokine genes. SNVs can also lead to changes in the expression of the inflammatory cytokines, interferons, interleukins (IL-6, IL-17) and tumor necrosis factors (TNF-α) at the protein level. RT-induced cardiopulmonary toxicities could be quantified by the uptake of 18F-fluorodeoxyglucose (FDG), however, FDG is a sensitive but not specific biomarker in differential diagnosis between inflammation/infection and tumor recurrence. FDG is suitable for initial diagnosis of predisposed tissue injuries in non-small cell lung cancer (NSCLC). 99mTc-ethylenedicysteine-glucosamine (99mTc-EC-G) was able to measure tumor DNA proliferation and myocardial ischemia via hexosamine biosynthetic pathways (HBP). Thus, 99mTc-EC-G could be an alternative to FDG in the assessment of RT doses and select patients in HBP-directed targets for optimal outcomes. This article reviewed correlative analyses of pro-inflammatory cytokines, genotype SNVs, and cellular imaging to improve the diagnosis, prognosis, monitoring, and prediction of RT-induced cardiopulmonary toxicities in NSCLC.
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Affiliation(s)
- Yuki Mukai-Sasaki
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States,Advanced Medical Center, Shonan Kamakura General Hospital, Kamakura, Japan,*Correspondence: Yuki Mukai-Sasaki,
| | - Zhongxing Liao
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - David Yang
- Advanced Medical Center, Shonan Kamakura General Hospital, Kamakura, Japan
| | - Tomio Inoue
- Advanced Medical Center, Shonan Kamakura General Hospital, Kamakura, Japan
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Yu Y, Yao W, Wang T, Xue W, Meng Y, Cai L, Jian W, Yu Y, Zhang C. FBXL6 depletion restrains clear cell renal cell carcinoma progression. Transl Oncol 2022; 26:101550. [PMID: 36183674 PMCID: PMC9526225 DOI: 10.1016/j.tranon.2022.101550] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 09/19/2022] [Accepted: 09/23/2022] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND F-box proteins play important roles in cell cycle and tumorigenesis. However, its prognostic value and molecular function in clear cell renal cell carcinoma (ccRCC) remain unclear. In this study, we established a survival model to evaluate the prognosis of patients with ccRCC using the F-box gene signature and investigated the function of FBXL6 in ccRCC. METHODS Comprehensive bioinformatics analyses were used to identify differentially expressed F-box and hub genes associated with ccRCC carcinogenesis. Based on the F-box gene signature, we constructed a risk model and nomogram to predict the overall survival (OS) of patients with ccRCC and assist clinicians in decision-making. Finally, we verified the function and underlying molecular mechanisms of FBXL6 in ccRCC using CCK-8 and EdU assays, flow cytometry, and subcutaneous xenografts. RESULTS A risk model based on FBXO39, FBXL6, FBXO1, and FBXL16 was developed. In addition, we drew a nomogram based on the risk score and clinical features to assess the prognosis of patients with ccRCC. Subsequently, we identified FBXL6 as an independent prognostic marker that was highly expressed in ccRCC cell lines. In vivo and in vitro assays revealed that the depletion of FBXL6 inhibited cell proliferation and induced apoptosis. We also demonstrated that SP1 regulated the expression of FBXL6. CONCLUSIONS FBXL6 was first identified as a diagnostic and prognostic marker in patients with ccRCC. Loss of FBXL6 attenuates proliferation and induces apoptosis in ccRCC cells. SP1 was also found to regulate the expression of FBXL6.
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Affiliation(s)
- Yongchun Yu
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Wenhao Yao
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Tengda Wang
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Wei Xue
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Yuyang Meng
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Licheng Cai
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Wengang Jian
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Yipeng Yu
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China
| | - Cheng Zhang
- Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, China; School of Medicine, Zhejiang University, Hangzhou, 310058, China.
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Dai X, Luo S, Guo S, Zhou W, Song W. Sp4 Regulates PTTG1IP Gene Transcription and Expression. DNA Cell Biol 2022; 41:1053-1062. [DOI: 10.1089/dna.2022.0243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Xi Dai
- Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Shuyue Luo
- Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Shipeng Guo
- Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Weihui Zhou
- Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Weihong Song
- Chongqing Key Laboratory of Translational Medical Research in Cognitive Development and Learning and Memory Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Institute of Aging, Key Laboratory of Alzheimer's Disease of Zhejiang Province, Zhejiang Provincial Clinical Research Center for Mental Disorders, School of Mental Health and Kangning Hospital, The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, China
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Silva M, Brand A, Novaes F, Rezende C. Cafestol, Kahweol and Their Acylated Derivatives: Antitumor Potential, Pharmacokinetics, and Chemopreventive Profile. FOOD REVIEWS INTERNATIONAL 2022. [DOI: 10.1080/87559129.2022.2141776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- M.A.E. Silva
- Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - A.L.M. Brand
- Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - F.J.M. Novaes
- Chemistry Department, Federal University of Viçosa, Viçosa, Brazil
| | - C.M Rezende
- Chemistry Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Jeong HO, Lee H, Kim H, Jang J, Kim S, Hwang T, Choi DWY, Kim HS, Lee N, Lee YM, Park S, Jung HA, Sun JM, Ahn JS, Ahn MJ, Park K, Lee S, Lee SH. Cellular plasticity and immune microenvironment of malignant pleural effusion are associated with EGFR-TKI resistance in non–small-cell lung carcinoma. iScience 2022; 25:105358. [PMID: 36339256 PMCID: PMC9626676 DOI: 10.1016/j.isci.2022.105358] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 08/24/2022] [Accepted: 10/10/2022] [Indexed: 11/30/2022] Open
Abstract
Malignant pleural effusion (MPE) is a complication of lung cancer that can be used as an alternative method for tissue sampling because it is generally simple and minimally invasive. Our study evaluated the diagnostic potential of non–small-cell lung carcinoma (NSCLC)-associated MPE in terms of understanding tumor heterogeneity and identifying response factors for EGFR tyrosine kinase inhibitor (TKI) therapy. We performed a single-cell RNA sequencing analysis of 31,743 cells isolated from the MPEs of 9 patients with NSCLC (5 resistant and 4 sensitive to EGFR TKI) with EGFR mutations. Interestingly, lung epithelial precursor-like cells with upregulated GNB2L1 and CAV1 expression were enriched in the EGFR TKI-resistant group. Moreover, GZMK upregulated transitional effector T cells, and plasmacytoid dendritic cells were significantly enriched in the EGFR TKI-resistant patients. Our results suggest that cellular plasticity and immunosuppressive microenvironment in MPEs are potentially associated with the TKI response of patients with EGFR-mutated NSCLC. ScRNA-seq reveals associations between cellular plasticity and EGFR-TKI response Lung epithelial progenitor-like cells are abundant in the TKI-resistant group HLA-II gene expression are upregulated in the epithelial cells of TKI-sensitive group Immunosuppressive TME was associated with the TKI resistance in NSCLC
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Affiliation(s)
- Hyoung-oh Jeong
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
- Korean Genomics Center, UNIST, Ulsan, Republic of Korea
| | - Hayoon Lee
- Medical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Department of Health Sciences and Technology, Samsung Advanced Institute of Health Sciences and Technology, Sungkyunkwan University, Seoul, Republic of Korea
| | - Hyemin Kim
- Medical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jinho Jang
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
- Korean Genomics Center, UNIST, Ulsan, Republic of Korea
| | - Seunghoon Kim
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
- Korean Genomics Center, UNIST, Ulsan, Republic of Korea
| | - Taejoo Hwang
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
- Korean Genomics Center, UNIST, Ulsan, Republic of Korea
| | - David Whee-Young Choi
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
- Korean Genomics Center, UNIST, Ulsan, Republic of Korea
| | - Hong Sook Kim
- Department of Biological Sciences, Sungkyunkwan University, Suwon, Republic of Korea
| | - Naeun Lee
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Yoo Mi Lee
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Republic of Korea
| | - Sehhoon Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hyun Ae Jung
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jong-Mu Sun
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jin Seok Ahn
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Myung-Ju Ahn
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Keunchil Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Semin Lee
- Department of Biomedical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, Republic of Korea
- Korean Genomics Center, UNIST, Ulsan, Republic of Korea
- Corresponding author
| | - Se-Hoon Lee
- Department of Health Sciences and Technology, Samsung Advanced Institute of Health Sciences and Technology, Sungkyunkwan University, Seoul, Republic of Korea
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
- Corresponding author
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Xiang G, Huang L, Zhang X, Wang N, Wang H, Mu Y, Li K, Liu Z. Molecular Characteristics and Promoter Analysis of Porcine COL1A1. Genes (Basel) 2022; 13:1971. [PMID: 36360208 PMCID: PMC9689670 DOI: 10.3390/genes13111971] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 10/20/2022] [Accepted: 10/24/2022] [Indexed: 03/25/2024] Open
Abstract
COL1A1 encodes the type I collagen α1 chain, which shows the highest abundance among members of the collagen family and is widely expressed in different mammalian cells and tissues. However, its molecular characteristics are not completely elucidated. In this study, the molecular profiles of COL1A1 and characteristics of the COL1A1 protein were investigated using a promoter activity assay and multiple bioinformatics tools. The results showed that the 5' flanking region of porcine COL1A1 contained two CpG islands, five core promoter sequences, and twenty-six transcription factor-binding sites. In the luciferase assay, the upstream 294 bp region of the initiation codon of COL1A1 showed the highest activity, confirming that this section is the core region of the porcine COL1A1 promoter. Bioinformatic analysis revealed that COL1A1 is a negatively charged, hydrophilic secreted protein. It does not contain a transmembrane domain and is highly conserved in humans, mice, sheep, and pigs. Protein interaction analysis demonstrated that the interaction coefficient of COL1A1 with COL1A2, COL3A1, ITGB1, and ITGA2 was greater than 0.9, suggesting that this protein plays a crucial role in collagen structure formation and cell adhesion. These results provide a theoretical basis for further investigation of the functions of porcine COL1A1.
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Affiliation(s)
- Guangming Xiang
- Key Laboratory of Animal Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs of China, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Lei Huang
- Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518124, China
| | - Xiuling Zhang
- Key Laboratory of Animal Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs of China, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Nan Wang
- Key Laboratory of Animal Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs of China, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Hui Wang
- Key Laboratory of Animal Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs of China, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yulian Mu
- Key Laboratory of Animal Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs of China, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Kui Li
- Key Laboratory of Animal Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs of China, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
- Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen 518124, China
| | - Zhiguo Liu
- Key Laboratory of Animal Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs of China, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100193, China
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40
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Phosphorylation-mediated interaction between human E26 transcription factor 1 and specific protein 1 is required for tumor cell migration. Acta Biochim Biophys Sin (Shanghai) 2022; 54:1441-1452. [PMID: 36305724 PMCID: PMC9828152 DOI: 10.3724/abbs.2022148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Transcription factors, human E26 transcription factor 1 (Ets1) and specific protein 1 (Sp1), are known to induce gene expression in tumorigenicity. High Ets1 expression is often associated with colorectal tumorigenesis. In this study, we discover that metastasis and clone formation in SW480 cells mainly depend on the direct interaction between Ets1 and Sp1 instead of high Ets1 expression. The interaction domains are further addressed to be the segment at Sp1(626-708) and the segment at Ets1(244-331). In addition, the phosphorylation inhibition of Ets1 at Tyr283 by either downregulation of Src kinase or Src family inhibitor treatment decreases the interaction between Sp1 and Ets1 and suppresses SW480 migration. Either administration or overexpression of the peptides harboring the interaction segment strongly inhibits the colony formation and migration of SW480 cells. Our findings suggest that the interaction between Ets1 and Sp1 rather than Ets1 alone promotes transformation in SW480 cells and provide new insight into the Ets1 and Sp1 interaction as an antitumour target in SW480 cells.
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SP and KLF Transcription Factors in Cancer Metabolism. Int J Mol Sci 2022; 23:ijms23179956. [PMID: 36077352 PMCID: PMC9456310 DOI: 10.3390/ijms23179956] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/24/2022] [Accepted: 08/27/2022] [Indexed: 11/17/2022] Open
Abstract
Tumor development and progression depend on reprogramming of signaling pathways that regulate cell metabolism. Alterations to various metabolic pathways such as glycolysis, oxidative phosphorylation, lipid metabolism, and hexosamine biosynthesis pathway are crucial to sustain increased redox, bioenergetic, and biosynthesis demands of a tumor cell. Transcription factors (oncogenes and tumor suppressors) play crucial roles in modulating these alterations, and their functions are tethered to major metabolic pathways under homeostatic conditions and disease initiation and advancement. Specificity proteins (SPs) and Krüppel-like factors (KLFs) are closely related transcription factors characterized by three highly conserved zinc fingers domains that interact with DNA. Studies have demonstrated that SP and KLF transcription factors are expressed in various tissues and regulate diverse processes such as proliferation, differentiation, apoptosis, inflammation, and tumorigenesis. This review highlights the role of SP and KLF transcription factors in the metabolism of various cancers and their impact on tumorigenesis. A better understanding of the role and underlying mechanisms governing the metabolic changes during tumorigenesis could provide new therapeutic opportunities for cancer treatment.
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Aberrant transcription factors in the cancers of the pancreas. Semin Cancer Biol 2022; 86:28-45. [PMID: 36058426 DOI: 10.1016/j.semcancer.2022.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/15/2022] [Accepted: 08/29/2022] [Indexed: 11/21/2022]
Abstract
Transcription factors (TFs) are essential for proper activation of gene set during the process of organogenesis, differentiation, lineage specificity. Reactivation or dysregulation of TFs regulatory networks could lead to deformation of organs, diseases including various malignancies. Currently, understanding the mechanism of oncogenesis became necessity for the development of targeted therapeutic strategy for different cancer types. It is evident that many TFs go awry in cancers of the pancreas such as pancreatic ductal adenocarcinoma (PDAC) and pancreatic neuroendocrine neoplasms (PanNENs). These mutated or dysregulated TFs abnormally controls various signaling pathways in PDAC and PanNENs including RTK, PI3K-PTEN-AKT-mTOR, JNK, TGF-β/SMAD, WNT/β-catenin, SHH, NOTCH and VEGF which in turn regulate different hallmarks of cancer. Aberrant regulation of such pathways have been linked to the initiation, progression, metastasis, and resistance in pancreatic cancer. As of today, a number of TFs has been identified as crucial regulators of pancreatic cancer and a handful of them shown to have potential as therapeutic targets in pre-clinical and clinical settings. In this review, we have summarized the current knowledge on the role and therapeutic usefulness of TFs in PDAC and PanNENs.
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Hu F, Ren Y, Wang Z, Zhou H, Luo Y, Wang M, Tian F, Zheng J, Du J, Pang G. Bioinformatics analysis of KLF2 as a potential prognostic factor in ccRCC and association with epithelial‑mesenchymal transition. Exp Ther Med 2022; 24:561. [PMID: 35978925 PMCID: PMC9366276 DOI: 10.3892/etm.2022.11498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 06/23/2022] [Indexed: 11/29/2022] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is a primary pathological subtype of RCC and has poor clinical outcome. Krüppel-like factors (KLFs), which are zinc-finger proteins, may be involved in ccRCC development and progression. KLFs belong to the zinc-finger family of DNA-binding transcription factors and regulate transcription of downstream target genes. KLFs are involved in cancer development. The present study aimed to investigate the role of KLFs in ccRCC prognosis. The Cancer Genome Atlas database and multifactorial analysis showed that KLFs were widely expressed in pan-cancers and KLF2 was an independent protective factor for ccRCC prognosis. Patients with low KLF2 expression had a low survival probability and expression of KLF2 was downregulated in patients with ccRCC with high pathological grade (II + III vs. I). In addition, western blot and reverse transcription-quantitative PCR revealed that KLF2 was expressed at low levels in ccRCC cell lines and overexpression of KLF2 inhibited cell migration. In addition, KLF2 expression was negatively correlated with methylation. KLF2 expression was elevated following treatment of ccRCC cells with DNA methyltransferase inhibitor. A prognostic risk index prediction model was constructed based on multiple Cox regression. The receiver operating characteristic curve was 0.780 (area under curve >0.5). Furthermore, Gene Ontology enrichment analysis showed that ‘cell adhesion’ and ‘junction’ were negatively correlated with KLF2 and that high-risk group exhibited significantly activated ‘epithelial-mesenchymal transition’. Western blot analysis showed that overexpression of KLF2 increased expression of E-cadherin, while decreasing levels of N-cadherin and vimentin. The present study highlighted the role of KLFs in ccRCC prognosis prediction and provides a research base for the search of validated prognostic biological markers for ccRCC.
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Affiliation(s)
- Fangfang Hu
- Department of Physiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yan Ren
- Department of Human Anatomy, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Zunyun Wang
- The Second Affiliated Hospital, School of Medicine, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P.R. China
| | - Hui Zhou
- Department of Physiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Yumei Luo
- The Second Affiliated Hospital, School of Medicine, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P.R. China
| | - Minghua Wang
- The Second Affiliated Hospital, School of Medicine, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P.R. China
| | - Faqing Tian
- The Second Affiliated Hospital, School of Medicine, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P.R. China
| | - Jian Zheng
- The Second Affiliated Hospital, School of Medicine, The Chinese University of Hong Kong, Shenzhen, Guangdong 518172, P.R. China
| | - Juan Du
- Department of Physiology, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
| | - Gang Pang
- Department of Human Anatomy, School of Basic Medical Sciences, Anhui Medical University, Hefei, Anhui 230032, P.R. China
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Park SB, Jung W, Kim H, Yu HY, Kim Y, Kim J. Esculetin has therapeutic potential via the proapoptotic signaling pathway in A253 human submandibular salivary gland tumor cells. Exp Ther Med 2022; 24:533. [PMID: 35837055 PMCID: PMC9257944 DOI: 10.3892/etm.2022.11460] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 03/16/2022] [Indexed: 11/24/2022] Open
Abstract
Esculetin is a natural lactone that is commonly derived from coumarins. According to previous experiments using human cancer cells, esculetin has potent antitumor activity; it also inhibits proliferation and induces the apoptosis of cancer cells. In the present study, the anti-proliferative effect of esculetin on the submandibular salivary gland tumor cell line, A253, was evaluated via in vitro and in vivo analyses. Furthermore, the anti-cancer effects of esculetin in A253 cells and a xenograft model of salivary gland tumors were determined using 3-(4,5-dimethylthiazol)-2,5-diphenyltetrazolium bromide and TUNEL assay, apoptosis protein array, quantitative polymerase chain reaction and western blot analysis. Esculetin (50-150 µM) was demonstrated to have an anti-proliferative effect in the A253 cell line in vitro; this observed effect was dependent on the dose and duration of treatment. Esculetin also increased the levels of Bax, cleaved caspase-3, cleaved-9 and cleaved poly (ADP-ribose) polymerase apoptosis-related proteins, and decreased the expression levels of the Bcl-2 anti-apoptotic protein. With respect to apoptosis regulation, esculetin significantly decreased the proliferation of tumor cells in a xenograft model (100 mg/kg/day) for 18 days. Overall, esculetin could be a potential oral anticancer drug against salivary gland cancer.
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Affiliation(s)
- Su-Bin Park
- Department of Oral Pathology, School of Dentistry, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea
| | - Woo Jung
- Department of Oral Pathology, School of Dentistry, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea
| | - Hyung Kim
- Department of Oral Pathology, School of Dentistry, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea
| | - Hwa-Young Yu
- Department of Oral Pathology, School of Dentistry, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea
| | - Yong Kim
- Department of Oral Pathology, School of Dentistry, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea
| | - Junghyun Kim
- Department of Oral Pathology, School of Dentistry, Jeonbuk National University, Jeonju, Jeollabuk-do 54896, Republic of Korea
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Wijesekera N, Hazell N, Jones C. Independent Cis-Regulatory Modules within the Herpes Simplex Virus 1 Infected Cell Protein 0 (ICP0) Promoter Are Transactivated by Krüppel-like Factor 15 and Glucocorticoid Receptor. Viruses 2022; 14:v14061284. [PMID: 35746756 PMCID: PMC9228413 DOI: 10.3390/v14061284] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/11/2022] [Accepted: 06/10/2022] [Indexed: 12/10/2022] Open
Abstract
A corticosteroid antagonist impairs Herpes Simplex Virus 1 (HSV-1) productive infection and explant-induced reactivation from latency, suggesting corticosteroids and the glucocorticoid receptor (GR) mediate certain aspects of these complex virus-host interactions. GR-hormone complexes regulate transcription positively and negatively, in part, by binding GR response elements (GREs). Recent studies revealed infected cell protein 0 (ICP0), ICP4, and ICP27 promoter/cis-regulatory modules (CRMs) are cooperatively transactivated by GR and Krüppel-like factor 15 (KLF15), which forms a feed-forward transcription loop. We hypothesized the ICP0 promoter contains independent CRMs that are transactivated by GR, KLF15, and the synthetic corticosteroid dexamethasone (DEX). This hypothesis is based on the finding that the ICP0 promoter contains multiple transcription factor binding sites, and GR and KLF15 cooperatively transactivate the full-length ICP0 promoter. ICP0 promoter sequences spanning -800 to -635 (fragment A) were efficiently transactivated by GR, KLF15, and DEX in monkey kidney cells (Vero), whereas GR and DEX significantly enhanced promoter activity in mouse neuroblastoma cells (Neuro-2A). Furthermore, ICP0 fragment B (-458 to -635) was efficiently transactivated by GR, KLF15, and DEX in Vero cells, but not Neuro-2A cells. Finally, fragment D (-232 to -24) was transactivated significantly in Vero cells by GR, KLF15, and DEX, whereas KLF15 and DEX were sufficient for transactivation in Neuro-2A cells. Collectively, these studies revealed efficient transactivation of three independent CRMs within the ICP0 promoter by GR, KLF15, and/or DEX. Finally, GC-rich sequences containing specificity protein 1 (Sp1) binding sites were essential for transactivation.
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Affiliation(s)
- Nishani Wijesekera
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, 208 N McFarland Street, RM 250 McElroy Hall, Stillwater, OK 74078, USA;
| | - Nicholas Hazell
- Experimental Pathology Program, University of Texas Medical Branch, 301 University Blvd, Galveston, TX 77555, USA;
| | - Clinton Jones
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Oklahoma State University, 208 N McFarland Street, RM 250 McElroy Hall, Stillwater, OK 74078, USA;
- Correspondence: ; Tel.: +1-405-744-1842
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Meier-Stephenson V. G4-quadruplex-binding proteins: review and insights into selectivity. Biophys Rev 2022; 14:635-654. [PMID: 35791380 PMCID: PMC9250568 DOI: 10.1007/s12551-022-00952-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 04/04/2022] [Indexed: 02/06/2023] Open
Abstract
There are over 700,000 putative G4-quadruplexes (G4Qs) in the human genome, found largely in promoter regions, telomeres, and other regions of high regulation. Growing evidence links their presence to functionality in various cellular processes, where cellular proteins interact with them, either stabilizing and/or anchoring upon them, or unwinding them to allow a process to proceed. Interest in understanding and manipulating the plethora of processes regulated by these G4Qs has spawned a new area of small-molecule binder development, with attempts to mimic and block the associated G4-binding protein (G4BP). Despite the growing interest and focus on these G4Qs, there is limited data (in particular, high-resolution structural information), on the nature of these G4Q-G4BP interactions and what makes a G4BP selective to certain G4Qs, if in fact they are at all. This review summarizes the current literature on G4BPs with regards to their interactions with G4Qs, providing groupings for binding mode, drawing conclusions around commonalities and highlighting information on specific interactions where available.
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Affiliation(s)
- Vanessa Meier-Stephenson
- Department of Medicine, Division of Infectious Diseases, University of Alberta, Edmonton, AB Canada
- Department of Medical Microbiology and Immunology, University of Alberta, Edmonton, AB Canada
- Li Ka Shing Institute of Virology, University of Alberta, Edmonton, AB Canada
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Kong HJ, Lee JJ, Kim JW, Kim J, Kim YO, Yeo SY. Zebrafish Klf11b is Required to Maintain Cell Viability by Inhibiting p53-Mediated Apoptosis. Dev Reprod 2022; 26:79-90. [PMID: 35950165 PMCID: PMC9336215 DOI: 10.12717/dr.2022.26.2.79] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/24/2022] [Accepted: 06/03/2022] [Indexed: 11/17/2022]
Abstract
Krüppel-like factor 10 (KLF10) regulates various cellular functions, such as proliferation, differentiation and apoptosis, as well as the homeostasis of several types of tissue. In the present study, we attempted a loss-of-function analysis of zebrafish Klf11a and Klf11b, which constitute human KLF10 homologs. Embryos injected with klf11b-morpholino (MO) showed developmental retardation and cell death, whereas klf11a-MO-injected embryos showed normal development. In klf11b-MO-injected embryos, a dramatic increase in the amount of zebrafish p53 mRNA might be the cause of the increase in that of bax. The degree of apoptosis decreased in the klf11b-MO and p53-MO co-injected embryos. These findings imply that KLF10 is a negative regulator of p53-dependent transcription, suggesting that the KLF10/p53 complex may play an important role in apoptosis for maintenance of tissue homeostasis during embryonic development.
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Affiliation(s)
- Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
- Corresponding author Hee Jeong Kong, Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea. Tel: +82-51-720-2455, Fax: +82-51-720-2456, E-mail: , Sang-Yeob Yeo, Department of Chemical and Biological Engineering, Hanbat National University, Daejeon 34158, Korea. Tel: +82-42-821-1552, Fax: +82-42-821-1692, E-mail:
| | - Jung Jin Lee
- Dept. of Chemical and Biological Engineering, Hanbat National University, Daejeon 34158, Korea
| | - Ju-Won Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Julan Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea
| | - Sang-Yeob Yeo
- Dept. of Chemical and Biological Engineering, Hanbat National University, Daejeon 34158, Korea
- Corresponding author Hee Jeong Kong, Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Korea. Tel: +82-51-720-2455, Fax: +82-51-720-2456, E-mail: , Sang-Yeob Yeo, Department of Chemical and Biological Engineering, Hanbat National University, Daejeon 34158, Korea. Tel: +82-42-821-1552, Fax: +82-42-821-1692, E-mail:
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Nikolovska K, Seidler UE, Stock C. The Role of Plasma Membrane Sodium/Hydrogen Exchangers in Gastrointestinal Functions: Proliferation and Differentiation, Fluid/Electrolyte Transport and Barrier Integrity. Front Physiol 2022; 13:899286. [PMID: 35665228 PMCID: PMC9159811 DOI: 10.3389/fphys.2022.899286] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 04/19/2022] [Indexed: 12/11/2022] Open
Abstract
The five plasma membrane Na+/H+ exchanger (NHE) isoforms in the gastrointestinal tract are characterized by distinct cellular localization, tissue distribution, inhibitor sensitivities, and physiological regulation. NHE1 (Slc9a1) is ubiquitously expressed along the gastrointestinal tract in the basolateral membrane of enterocytes, but so far, an exclusive role for NHE1 in enterocyte physiology has remained elusive. NHE2 (Slc9a2) and NHE8 (Slc9a8) are apically expressed isoforms with ubiquitous distribution along the colonic crypt axis. They are involved in pHi regulation of intestinal epithelial cells. Combined use of a knockout mouse model, intestinal organoid technology, and specific inhibitors revealed previously unrecognized actions of NHE2 and NHE8 in enterocyte proliferation and differentiation. NHE3 (Slc9a3), expressed in the apical membrane of differentiated intestinal epithelial cells, functions as the predominant nutrient-independent Na+ absorptive mechanism in the gut. The new selective NHE3 inhibitor (Tenapanor) allowed discovery of novel pathophysiological and drug-targetable NHE3 functions in cystic-fibrosis associated intestinal obstructions. NHE4, expressed in the basolateral membrane of parietal cells, is essential for parietal cell integrity and acid secretory function, through its role in cell volume regulation. This review focuses on the expression, regulation and activity of the five plasma membrane Na+/H+ exchangers in the gastrointestinal tract, emphasizing their role in maintaining intestinal homeostasis, or their impact on disease pathogenesis. We point to major open questions in identifying NHE interacting partners in central cellular pathways and processes and the necessity of determining their physiological role in a system where their endogenous expression/activity is maintained, such as organoids derived from different parts of the gastrointestinal tract.
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Zahra K, Shabbir M, Badshah Y, Trembley JH, Badar Z, Khan K, Afsar T, Almajwal A, Alruwaili NW, Razak S. Determining KLF14 tertiary structure and diagnostic significance in brain cancer progression. Sci Rep 2022; 12:8039. [PMID: 35577881 PMCID: PMC9110742 DOI: 10.1038/s41598-022-12072-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 05/03/2022] [Indexed: 12/14/2022] Open
Abstract
Expression analysis of new protein targets may play a crucial role in the early detection and diagnosis of brain tumor progression. The study aimed to investigate the possible relation of KLF14, TPD52, miR-124, and PKCε in the development and progression of brain cancer and space occupying lesion (SOL) of the brain. One hundred human blood samples comprising varying diagnostic groups (SOL brain, grade I, II, III, IV) were analyzed by real-time quantitative PCR to determine the expression level of KLF14, TPD52, miR-124, and PKCε. TPD52 and PKCε were upregulated in brain cancer by 2.5- and 1.6-fold, respectively, whereas, KLF14 and miR-124 were downregulated in brain cancer. In metastatic and high-grade brain cancer, TPD52 and PKCε expression were up-regulated and KLF14 and miR-124 expression were down-regulated. Further, these genes were found to be differentially expressed in the blood of patients with SOL. Upregulation of TPD52 and PKCε, however, reduced expression of KLF14 and miR-124 in SOL of the brain as compared to healthy controls. Expression analysis of TPD52, KLF14, miR-124, and PKCε provided useful information on the differences existing between the normal brain and SOL, in addition to gliomas; thus, might prove to be useful having diagnostic or prognostic value.
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Affiliation(s)
- Kainat Zahra
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Maria Shabbir
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan.
| | - Yasmin Badshah
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Janeen H Trembley
- Minneapolis VA Health Care System Research Service, Minneapolis, MN, USA
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, USA
- Masonic Cancer Center, University of Minnesota, Minneapolis, MN, USA
| | - Zunaira Badar
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Khushbukhat Khan
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Tayyaba Afsar
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ali Almajwal
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Nawaf W Alruwaili
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Suhail Razak
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
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Shen PC, Wang YF, Chang HC, Huang WY, Lo CH, Su YF, Yang JF, Lin CS, Dai YH. Developing a novel DNA methylation risk score for survival and identification of prognostic gene mutations in endometrial cancer: a study based on TCGA data. Jpn J Clin Oncol 2022; 52:992-1000. [DOI: 10.1093/jjco/hyac077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 04/22/2022] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Few studies have focused on DNA methylation in endometrial cancer. The aim of our study is identify its role in endometrial cancer prognosis.
Methods
A publicly available dataset was retrieved from The Cancer Genome Atlas. For validation of expression alteration due to methylation, RNA sequencing data were obtained from other independent cohorts. MethSurv was used to search for candidate CpG probes, which were then filtered by least absolute shrinkage and selection operator Cox regression and multivariate Cox regression analyses to identify final set of CpG probes for overall survival. A methylation-based risk model was developed and receiver operating characteristic analysis with area under curve was used for evaluation. Patients were divided into high- and low-risk groups using an optimal cut-off point. Comprehensive bioinformatic analyses were conducted to identify hub genes, key transcription factors, and enriched cancer-related pathways. Kaplan–Meier curve was used for survival analysis.
Results
A 5-CpG signature score was established. Its predictive value for 5-year overall survival was high, with area under curve of 0.828, 0.835 and 0.816 for the training, testing and entire cohorts. cg27487839 and cg12885678 had strong correlation with their gene expression, XKR6 and PTPRN2, and lower PTPRN2 expression was associated with poorer survival in both The Cancer Genome Atlas and the validation datasets. Low-risk group was associated with significantly better survival. Low-risk group harboured more mutations in hub genes and key transcription factors, and mutations in SP1 and MECP2 represented favourable outcome.
Conclusion
We developed a methylation-based prognostic stratification system for endometrial cancer. Low-risk group was associated with better survival and harboured more mutations in the key regulatory genes.
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Affiliation(s)
- Po-Chien Shen
- Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center, Taipei
- Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taipei, Taiwan
| | - Ying-Fu Wang
- Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center, Taipei
| | - Hao-Chih Chang
- Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center, Taipei
| | - Wen-Yen Huang
- Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center, Taipei
| | - Cheng-Hsiang Lo
- Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center, Taipei
| | - Yu-Fu Su
- Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center, Taipei
| | - Jen-Fu Yang
- Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center, Taipei
| | - Chun-Shu Lin
- Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center, Taipei
| | - Yang-Hong Dai
- Department of Radiation Oncology, Tri-Service General Hospital, National Defense Medical Center, Taipei
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