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Tang J, Huang X. Transcriptome analysis of human dental pulp cells cultured on a novel cell-adhesive fragment by RNA sequencing. Gene 2024; 927:148709. [PMID: 38901533 DOI: 10.1016/j.gene.2024.148709] [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: 04/22/2024] [Revised: 06/09/2024] [Accepted: 06/17/2024] [Indexed: 06/22/2024]
Abstract
AIM The aim of the present work was to find an efficient method for safe and reliable expansion of human dental pulp cells (hDPCs) in vitro. Here, we examined the effect of a novel recombinant E8 fragment of Laminin-511 (iMatrix-511) in hDPCs regarding viability and cell spreading. Further, we investigated the underlying mechanisms governing its effects in hDPCs using RNA sequencing (RNA-seq). METHODOLOGY hDPCs were obtained from caries-free maxilla third molars (n = 3). CCK-8 assay was conducted to measure the viability of cells cultured on iMatrix-511 and two other ECM proteins. Cell morphology was observed by phase contrast microscope. RNA-seq of hDPCs cultured on iMatrix-511 or noncoated control was performed on Illumina NovaseqTM 6000 platform. RESULTS iMatrix-511 (0.5 μg/cm2) enhanced the viability of hDPCs to an extent better than COL-1 and gelatin. Short term culture of hDPCs on iMatrix-511 resulted in 233 differentially expressed genes (DEGs). The top 12 most upregulated genes were XIAP, AL354740, MRFAP1, AC012321, KCND3, TMEM120B, AC009812, GET1-SH3BGR, CNTN3, AC090409, GEN1 and PIK3IP1, whereas the top 12 most downregulated genes were SFN, KRT17, RAB4B-EGLN2, CSTA, KCTD11, ATP6V1G2-DDX39B, AC010323, SBSN, LYPD3, FOSB, AC022400 and CHI3L1. qPCR validation confirmed the significant upregulation of GEN1, KCND3, PIK3IP1 and MRFAP1. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses were performed, with genes enriched in various extracellular matrix interaction, estrogen and fat metabolism-related functions and pathways. CONCLUSIONS iMatrix-511 facilitated spreading and proliferation of hDPCs. It enhances expression of anti-apoptotic genes, while inhibits expression of epidermis development-related genes.
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Affiliation(s)
- Jia Tang
- School and Hospital of Stomatology, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Tongji University, Shanghai 200072, PR China
| | - Xiaofeng Huang
- Department of Stomatology, Huashan Hospital, Fudan University, Shanghai 200040, PR China.
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Yoodee S, Peerapen P, Rattananinsruang P, Detsangiamsak S, Sukphan S, Thongboonkerd V. Large-scale identification of calcium oxalate stone inhibitory proteins in normal human urine. Int J Biol Macromol 2024; 275:133646. [PMID: 38969041 DOI: 10.1016/j.ijbiomac.2024.133646] [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: 05/20/2024] [Revised: 06/25/2024] [Accepted: 07/02/2024] [Indexed: 07/07/2024]
Abstract
Recent evidence has shown that proteins in normal human urine can inhibit calcium oxalate (CaOx) kidney stone formation. Herein, we performed fast protein liquid chromatography (FPLC) to fractionate normal human urinary proteins using anion-exchange (DEAE) and size-exclusion (Superdex 200) materials. FPLC fractions (F1-F15) were examined by CaOx crystallization, growth, aggregation and crystal-cell adhesion assays. The fractions with potent inhibitory activities against CaOx crystals were then subjected to mass spectrometric protein identification. The data revealed that 13 of 15 fractions showed inhibitory activities in at least one crystal assay. Integrating CaOx inhibitory scores demonstrated that F6, F7 and F8 had the most potent inhibitory activities. NanoLC-ESI-Qq-TOF MS/MS identified 105, 93 and 53 proteins in F6, F7 and F8, respectively. Among them, 60 were found in at least two fractions and/or listed among known inhibitors with solid experimental evidence in the StoneMod database (https://www.stonemod.org). Interestingly, 10 of these 60 potential inhibitors have been reported with lower urinary levels in CaOx stone formers compared with healthy (non-stone) individuals, strengthening their roles as potent CaOx stone inhibitors. Our study provides the largest dataset of potential CaOx stone inhibitory proteins that will be useful for further elucidations of stone-forming mechanisms and ultimately for therapeutic/preventive applications.
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Affiliation(s)
- Sunisa Yoodee
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Paleerath Peerapen
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Piyaporn Rattananinsruang
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Sasinun Detsangiamsak
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Sirirat Sukphan
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Visith Thongboonkerd
- Medical Proteomics Unit, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand.
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Murter BM, Robinson SC, Banerjee H, Lau L, Uche U, Szymczak-Workman AL, Kane LP. Downregulation of PIK3IP1/TrIP on T cells is controlled by TCR signal strength, PKC, and metalloprotease-mediated cleavage. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.04.29.591680. [PMID: 38746242 PMCID: PMC11092459 DOI: 10.1101/2024.04.29.591680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
The protein known as PI3K-interacting protein (PIK3IP1), or transmembrane inhibitor of PI3K (TrIP), is highly expressed by T cells and can modulate PI3K activity in these cells. Several studies have also revealed that TrIP is rapidly downregulated following T cell activation. However, it is unclear as to how this downregulation is controlled. Using a novel monoclonal antibody that robustly stains cell-surface TrIP, we demonstrate that TrIP is lost from the surface of activated T cells in a manner dependent on the strength of signaling through the T cell receptor (TCR) and specific downstream signaling pathways. In addition, TrIP expression returns after 24 hours, suggesting that it may play a role in resetting TCR signaling at later time points. Finally, by expressing truncated forms of TrIP in cells, we identify the region in the extracellular stalk domain of TrIP that is targeted for proteolytic cleavage by metalloprotease ADAM17.
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Lei K, Liang R, Liang J, Lu N, Huang J, Xu K, Tan B, Wang K, Liang Y, Wang W, Lin H, Wang M. CircPDE5A-encoded novel regulator of the PI3K/AKT pathway inhibits esophageal squamous cell carcinoma progression by promoting USP14-mediated de-ubiquitination of PIK3IP1. J Exp Clin Cancer Res 2024; 43:124. [PMID: 38658954 PMCID: PMC11040784 DOI: 10.1186/s13046-024-03054-3] [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: 01/23/2024] [Accepted: 04/19/2024] [Indexed: 04/26/2024] Open
Abstract
BACKGROUND Esophageal squamous cell carcinoma (ESCC) is a common gastrointestinal tumor and has become an important global health problem. The PI3K/AKT signaling pathway plays a key role in the development of ESCC. CircRNAs have been reported to be involved in the regulation of the PI3K/AKT pathway, but the underlying mechanisms are unclear. Therefore, this study aimed to identify protein-coding circRNAs and investigate their functions in ESCC. METHODS Differential expression of circRNAs between ESCC tissues and adjacent normal tissues was identified using circRNA microarray analysis. Thereafter, LC-MS/MS was used to identify circPDE5A-encoded novel protein PDE5A-500aa. Molecular biological methods were used to explore the biological functions and regulatory mechanisms of circPDE5A and PDE5A-500aa in ESCC. Lastly, circRNA-loaded nanoplatforms were constructed to investigate the therapeutic translation value of circPDE5A. RESULTS We found that circPDE5A expression was down-regulated in ESCC cells and tissues and that it was negatively associated with advanced clinicopathological stages and poorer prognosis in ESCC. Functionally, circPDE5A inhibited ESCC proliferation and metastasis in vitro and in vivo by encoding PDE5A-500aa, a key regulator of the PI3K/AKT signaling pathway in ESCC. Mechanistically, PDE5A-500aa interacted with PIK3IP1 and promoted USP14-mediated de-ubiquitination of the k48-linked polyubiquitin chain at its K198 residue, thereby attenuating the PI3K/AKT pathway in ESCC. In addition, Meo-PEG-S-S-PLGA-based reduction-responsive nanoplatforms loaded with circPDE5A and PDE5A-500aa plasmids were found to successfully inhibit the growth and metastasis of ESCC in vitro and in vivo. CONCLUSION The novel protein PDE5A-500aa encoded by circPDE5A can act as an inhibitor of the PI3K/AKT signaling pathway to inhibit the progression of ESCC by promoting USP14-mediated de-ubiquitination of PIK3IP1 and may serve as a potential target for the development of therapeutic agents.
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Affiliation(s)
- Kai Lei
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Department of Thoracic Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Ruihao Liang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Department of Thoracic Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Jialu Liang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Department of Thoracic Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Nan Lu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Nanhai Translational Innovation Center of Precision Immunology, Sun Yat-Sen Memorial Hospital, Foshan, 528200, China
| | - Jing Huang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Department of Thoracic Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Ke Xu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Department of Thoracic Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Binghua Tan
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Department of Thoracic Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Kexi Wang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Department of Thoracic Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Yicheng Liang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Department of Thoracic Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Wenjian Wang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
- Department of Thoracic Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
| | - Huayue Lin
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
- Breast Tumor Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
| | - Minghui Wang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
- Department of Thoracic Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China.
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Zhou G, Wang S, Lin L, Lu K, Lin Z, Zhang Z, Zhang Y, Cheng D, Szeto K, Peng R, Luo C. Screening for immune-related biomarkers associated with myasthenia gravis and dilated cardiomyopathy based on bioinformatics analysis and machine learning. Heliyon 2024; 10:e28446. [PMID: 38571624 PMCID: PMC10988011 DOI: 10.1016/j.heliyon.2024.e28446] [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: 11/30/2023] [Revised: 03/18/2024] [Accepted: 03/19/2024] [Indexed: 04/05/2024] Open
Abstract
Background We aim to investigate genes associated with myasthenia gravis (MG), specifically those potentially implicated in the pathogenesis of dilated cardiomyopathy (DCM). Additionally, we seek to identify potential biomarkers for diagnosing myasthenia gravis co-occurring with DCM. Methods We obtained two expression profiling datasets related to DCM and MG from the Gene Expression Omnibus (GEO). Subsequently, we conducted differential gene expression analysis and weighted gene co-expression network analysis (WGCNA) on these datasets. The genes exhibiting differential expression common to both DCM and MG were employed for protein-protein interaction (PPI), Gene Ontology (GO) enrichment analysis, and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. Additionally, machine learning techniques were employed to identify potential biomarkers and develop a diagnostic nomogram for predicting MG-associated DCM. Subsequently, the machine learning results underwent validation using an external dataset. Finally, gene set enrichment analysis (GSEA) and machine algorithm analysis were conducted on pivotal model genes to further elucidate their potential mechanisms in MG-associated DCM. Results In our analysis of both DCM and MG datasets, we identified 2641 critical module genes and 11 differentially expressed genes shared between the two conditions. Enrichment analysis disclosed that these 11 genes primarily pertain to inflammation and immune regulation. Connectivity map (CMAP) analysis pinpointed SB-216763 as a potential drug for DCM treatment. The results from machine learning indicated the substantial diagnostic value of midline 1 interacting protein1 (MID1IP1) and PI3K-interacting protein 1 (PIK3IP1) in MG-associated DCM. These two hub genes were chosen as candidate biomarkers and employed to formulate a diagnostic nomogram with optimal diagnostic performance through machine learning. Simultaneously, single-gene GSEA results and immune cell infiltration analysis unveiled immune dysregulation in both DCM and MG, with MID1IP1 and PIK3IP1 showing significant associations with invasive immune cells. Conclusion We have elucidated the inflammatory and immune pathways associated with MG-related DCM and formulated a diagnostic nomogram for DCM utilizing MID1IP1/PIK3IP1. This contribution offers novel insights for prospective diagnostic approaches and therapeutic interventions in the context of MG coexisting with DCM.
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Affiliation(s)
- Guiting Zhou
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Shushu Wang
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Liwen Lin
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Kachun Lu
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhichao Lin
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Ziyan Zhang
- Zhongshan Traditional Chinese Medicine Hospital, Zhongshan, China
| | - Yuling Zhang
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Danling Cheng
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - KaMan Szeto
- The First Clinical Medical College, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Rui Peng
- Shunde Hospital of Guangzhou University of Chinese Medicine, Foshan, China
| | - Chuanjin Luo
- Cardiology Center, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Guangdong Clinical Research Academy of Chinese Medicine, Guangzhou, China
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Safaroghli-Azar A, Sanaei MJ, Pourbagheri-Sigaroodi A, Bashash D. Phosphoinositide 3-kinase (PI3K) classes: From cell signaling to endocytic recycling and autophagy. Eur J Pharmacol 2023:175827. [PMID: 37269974 DOI: 10.1016/j.ejphar.2023.175827] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 05/19/2023] [Accepted: 05/31/2023] [Indexed: 06/05/2023]
Abstract
Lipid signaling is defined as any biological signaling action in which a lipid messenger binds to a protein target, converting its effects to specific cellular responses. In this complex biological pathway, the family of phosphoinositide 3-kinase (PI3K) represents a pivotal role and affects many aspects of cellular biology from cell survival, proliferation, and migration to endocytosis, intracellular trafficking, metabolism, and autophagy. While yeasts have a single isoform of phosphoinositide 3-kinase (PI3K), mammals possess eight PI3K types divided into three classes. The class I PI3Ks have set the stage to widen research interest in the field of cancer biology. The aberrant activation of class I PI3Ks has been identified in 30-50% of human tumors, and activating mutations in PIK3CA is one of the most frequent oncogenes in human cancer. In addition to indirect participation in cell signaling, class II and III PI3Ks primarily regulate vesicle trafficking. Class III PI3Ks are also responsible for autophagosome formation and autophagy flux. The current review aims to discuss the original data obtained from international research laboratories on the latest discoveries regarding PI3Ks-mediated cell biological processes. Also, we unravel the mechanisms by which pools of the same phosphoinositides (PIs) derived from different PI3K types act differently.
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Affiliation(s)
- Ava Safaroghli-Azar
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad-Javad Sanaei
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Atieh Pourbagheri-Sigaroodi
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Davood Bashash
- Department of Hematology and Blood Banking, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Brennan L, Costello MJ, Hejtmancik JF, Menko AS, Riazuddin SA, Shiels A, Kantorow M. Autophagy Requirements for Eye Lens Differentiation and Transparency. Cells 2023; 12:475. [PMID: 36766820 PMCID: PMC9914699 DOI: 10.3390/cells12030475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/17/2023] [Accepted: 01/25/2023] [Indexed: 02/05/2023] Open
Abstract
Recent evidence points to autophagy as an essential cellular requirement for achieving the mature structure, homeostasis, and transparency of the lens. Collective evidence from multiple laboratories using chick, mouse, primate, and human model systems provides evidence that classic autophagy structures, ranging from double-membrane autophagosomes to single-membrane autolysosomes, are found throughout the lens in both undifferentiated lens epithelial cells and maturing lens fiber cells. Recently, key autophagy signaling pathways have been identified to initiate critical steps in the lens differentiation program, including the elimination of organelles to form the core lens organelle-free zone. Other recent studies using ex vivo lens culture demonstrate that the low oxygen environment of the lens drives HIF1a-induced autophagy via upregulation of essential mitophagy components to direct the specific elimination of the mitochondria, endoplasmic reticulum, and Golgi apparatus during lens fiber cell differentiation. Pioneering studies on the structural requirements for the elimination of nuclei during lens differentiation reveal the presence of an entirely novel structure associated with degrading lens nuclei termed the nuclear excisosome. Considerable evidence also indicates that autophagy is a requirement for lens homeostasis, differentiation, and transparency, since the mutation of key autophagy proteins results in human cataract formation.
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Affiliation(s)
- Lisa Brennan
- Department of Biomedical Science, Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL 33460, USA
| | - M. Joseph Costello
- Department of Cell Biology and Physiology, University of North Carolina, Chapel Hill, NC 27599, USA
| | - J. Fielding Hejtmancik
- Ophthalmic Genetics and Visual Function Branch, National Eye Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - A. Sue Menko
- Department of Pathology, Anatomy and Cell Biology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
- Department of Ophthalmology, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA
| | - S. Amer Riazuddin
- The Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Alan Shiels
- Department of Ophthalmology and Visual Sciences, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Marc Kantorow
- Department of Biomedical Science, Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL 33460, USA
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8
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Ma XB, Wang Y, Jia YJ, Liu YJ, Tian YQ, Liu Y, Hou GQ, Xu YC, Liu HM. Upregulation of PIK3IP1 monitors the anti-cancer activity of PI3Kα inhibitors in gastric cancer cells. Biochem Pharmacol 2023; 207:115380. [PMID: 36521557 DOI: 10.1016/j.bcp.2022.115380] [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: 10/27/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022]
Abstract
Gastric cancer remains one of the most malignant cancers in the world. The target-based drugs approved by FDA for gastric cancer treatment include only three targets and benefit a small portion of gastric cancer patients. PIK3CA, a confirmed oncogene, mutates in 7-25% gastric cancer patients. PI3Kα inhibitor BYL719 has been approved for treating specific breast cancer. However, there is no comprehensive study about PI3Kα inhibitor in gastric cancer. In this study, we found pharmacological inhibition or knockdown of PI3Kα effectively inhibited the proliferation of partial gastric cancer cells. Then, we systematically explored the potential biomarkers for predicting or monitoring treatment response according to previous reports and found that basal expression of several receptor tyrosine kinases were related with the sensitivity of gastric cancer cells to BYL719. Next, RNA-seq technique was utilized and showed that BYL719 inhibited Myc targets V2 gene set in sensitive gastric cancer cells, and western blotting further verified that c-Myc was only inhibited in sensitive gastric cancer cells. More importantly, we firstly found BYL719 significantly elevated the expression of PIK3IP1 in sensitive gastric cancer cells, which was also observed in NCI-N87 cell derived xenograft mice models. Meanwhile, knockdown of PIK3IP1 partially rescued the cell growth inhibited by BYL719 in sensitive gastric cancer cells, suggesting the important role of PIK3IP1 in the antitumor activity of BYL719. In conclusion, our study provides biological evidence that PI3Kα is a promising target in specific gastric cancer and the elevation of PIK3IP1 could supply as a biomarker that monitoring treatment response.
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Affiliation(s)
- Xu-Bin Ma
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Henan, 450052, Zhengzhou, China
| | - Yang Wang
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Henan, 450052, Zhengzhou, China
| | - Ying-Jie Jia
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Henan, 450052, Zhengzhou, China
| | - Ya-Jie Liu
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Henan, 450052, Zhengzhou, China
| | - Ying-Qi Tian
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Henan, 450052, Zhengzhou, China
| | - Ying Liu
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Henan, 450001, Zhengzhou, China
| | - Gui-Qin Hou
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Henan, 450052, Zhengzhou, China.; State Key Laboratory of Esophageal Cancer Prevention & Treatment, Academy of Medical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, China
| | - Yi-Chao Xu
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Henan, 450052, Zhengzhou, China.; State Key Laboratory of Esophageal Cancer Prevention & Treatment, Academy of Medical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, China..
| | - Hong-Min Liu
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Key Laboratory of Henan Province for Drug Quality and Evaluation, Institute of Drug Discovery and Development, School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Henan, 450052, Zhengzhou, China.; State Key Laboratory of Esophageal Cancer Prevention & Treatment, Academy of Medical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan, China..
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Xie W, Fang J, Shan Z, Guo J, Liao Y, Zou Z, Wang J, Wen S, Yang L, Zhang Y, Lu H, Zhao H, Kuang DM, Huang P, Chen Q, Wang Z. Regulation of autoimmune disease progression by Pik3ip1 through metabolic reprogramming in T cells and therapeutic implications. SCIENCE ADVANCES 2022; 8:eabo4250. [PMID: 36179018 PMCID: PMC9524833 DOI: 10.1126/sciadv.abo4250] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Metabolic alterations could profoundly affect immune functions and influence the progression and outcome of autoimmune diseases. However, the detailed mechanisms and their therapeutic potential remain to be defined. Here, we show that phosphatidylinositide 3-kinase interacting protein 1 (Pik3ip1), a newly identified negative immune regulator, is notably down-regulated in several major autoimmune diseases through a previously unidentified mechanism mediated by interleukin-21/p38 mitogen-activated protein kinase/a disintegrin and metalloprotease-17 (ADAM17) pathway. Down-regulation of Pik3ip1 in T cells causes a major metabolic shift from oxidative phosphorylation toward aerobic glycolysis, leading to their overactivation and aggressive disease progression in experimental autoimmune encephalomyelitis (EAE) mouse model. Suppression of hypoxia-inducible factor 1α (Hif1α) or pharmacologic inhibition of glycolysis could reverse these phenotypes and largely mitigate EAE severity. Our study reveals a previously unrecognized role of Pik3ip1 in metabolic regulation that substantially affects the inflammatory loop in the autoimmune setting and identifies the Pik3ip1/Hif1α/glycolysis axis as a potential therapeutic target for treatment of autoimmune diseases.
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Affiliation(s)
- Wenqiang Xie
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou 510055, China
| | - Juan Fang
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou 510055, China
| | - Zhongyan Shan
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou 510055, China
| | - Junyi Guo
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou 510055, China
| | - Yuan Liao
- Department of Laboratory Medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Zhaolei Zou
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou 510055, China
| | - Jun Wang
- Department of Pathology, New York University Grossman School of Medicine, New York, NY, USA
| | - Shuqiong Wen
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou 510055, China
| | - Lisa Yang
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou 510055, China
| | - Yanshu Zhang
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou 510055, China
| | - Huanzi Lu
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou 510055, China
| | - Hang Zhao
- State Key Laboratory of Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Dong-Ming Kuang
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Peng Huang
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
| | - Qianming Chen
- School of Stomatology, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhi Wang
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou 510055, China
- Corresponding author.
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10
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Targeting EZH2 Promotes Chemosensitivity of BCL-2 Inhibitor through Suppressing PI3K and c-KIT Signaling in Acute Myeloid Leukemia. Int J Mol Sci 2022; 23:ijms231911393. [PMID: 36232694 PMCID: PMC9569949 DOI: 10.3390/ijms231911393] [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: 08/17/2022] [Revised: 09/18/2022] [Accepted: 09/23/2022] [Indexed: 11/26/2022] Open
Abstract
Acute myeloid leukemia (AML) is one of the most common hematological malignancies with high heterogeneity, characterized by a differentiating block at the early progenitor stage. The selective BCL-2 inhibitor, Venetoclax (Ven), has shown exciting clinical results in a certain group of AML patients. However, Ven alone is insufficient to reach an enduringly complete response, which leads to the concern of Ven resistance. Alternative combined therapies with Ven are demanded in AML. Here, we reported the synergistic effect and molecular mechanism of the enhancer of zeste homolog 2 (EZH2) inhibitor DZNeP with Ven in AML cells. Results showed that the combination of DZNeP with Ven significantly induces cell proliferation arrest compared to single-drug control in AML cells and primary samples, and CalcuSyn analysis showed their significant synergy. The combination also significantly promotes apoptosis and increases the expression of pro-apoptotic proteins. The whole transcriptome analysis showed that phosphoinositide-3-kinase-interacting protein1 (PIK3IP1), the PI3K/AKT/mTOR signaling suppressor, is upregulated upon DZNeP treatment. Moreover, EZH2 is upregulated but PIK3IP1 is downregulated in 88 newly diagnosed AML cohorts compared to 70 healthy controls, and a higher expression of EZH2 is associated with poor outcomes in AML patients. Particularly, the combination of DZNeP with Ven dramatically eliminated CD117 (c-KIT) (+) AML blasts, suggesting the effect of the combination on tumor stem cells. In summary, our data indicated that DZNeP increases the sensitivity of Ven in AML by affecting PI3K and c-KIT signaling in AML. Our results also suggested that the therapeutic targeting of both EZH2 and BCL-2 provides a novel potential combined strategy against AML.
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11
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Rehman H, Chandrashekar DS, Balabhadrapatruni C, Nepal S, Balasubramanya SAH, Shelton AK, Skinner KR, Ma AH, Rao T, Eich ML, Robinson AD, Naik G, Manne U, Netto GJ, Miller CR, Pan CX, Sonpavde G, Varambally S, Ferguson III JE. ARID1A-deficient bladder cancer is dependent on PI3K signaling and sensitive to EZH2 and PI3K inhibitors. JCI Insight 2022; 7:155899. [PMID: 35852858 PMCID: PMC9462490 DOI: 10.1172/jci.insight.155899] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Accepted: 07/14/2022] [Indexed: 11/17/2022] Open
Abstract
Metastatic urothelial carcinoma is generally incurable with current systemic therapies. Chromatin modifiers are frequently mutated in bladder cancer, with ARID1A-inactivating mutations present in about 20% of tumors. EZH2, a histone methyltransferase, acts as an oncogene that functionally opposes ARID1A. In addition, PI3K signaling is activated in more than 20% of bladder cancers. Using a combination of in vitro and in vivo data, including patient-derived xenografts, we show that ARID1A-mutant tumors were more sensitive to EZH2 inhibition than ARID1A WT tumors. Mechanistic studies revealed that (a) ARID1A deficiency results in a dependency on PI3K/AKT/mTOR signaling via upregulation of a noncanonical PI3K regulatory subunit, PIK3R3, and downregulation of MAPK signaling and (b) EZH2 inhibitor sensitivity is due to upregulation of PIK3IP1, a protein inhibitor of PI3K signaling. We show that PIK3IP1 inhibited PI3K signaling by inducing proteasomal degradation of PIK3R3. Furthermore, ARID1A-deficient bladder cancer was sensitive to combination therapies with EZH2 and PI3K inhibitors in a synergistic manner. Thus, our studies suggest that bladder cancers with ARID1A mutations can be treated with inhibitors of EZH2 and/or PI3K and revealed mechanistic insights into the role of noncanonical PI3K constituents in bladder cancer biology.
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12
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Anti-Ischemic Effects of PIK3IP1 Are Mediated through Its Interactions with the ETA-PI3Kγ-AKT Axis. Cells 2022; 11:cells11142162. [PMID: 35883611 PMCID: PMC9322903 DOI: 10.3390/cells11142162] [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: 06/05/2022] [Revised: 06/27/2022] [Accepted: 07/07/2022] [Indexed: 12/10/2022] Open
Abstract
Oxidative stress, caused by the accumulation of reactive oxygen species (ROS) during acute myocardial infarction (AMI), is one of the main factors leading to myocardial cell damage and programmed cell death. Phosphatidylinositol-3-kinase-AKT (PI3K-AKT) signaling is essential for regulating cell proliferation, differentiation, and apoptosis. Phosphoinositide-3-kinase (PI3K)-interacting protein 1 (PIK3IP1) is an intrinsic inhibitor of PI3K in various tissues, but its functional role during AMI remains unknown. In this study, the anti-ischemic role of PIK3IP1 in an in vitro AMI setting was evaluated using H9c2 cells. The MTT assay demonstrated that cell viability decreased significantly via treatment with H2O2 (200–500 μM). The TUNEL assay results revealed substantial cellular apoptosis following treatment with 200 μM H2O2. Under the same conditions, the expression levels of hypoxia-inducible factor (HIF-1α), endothelin-1 (ET-1), bcl-2-like protein 4 (BAX), and cleaved caspase-3 were elevated, whereas those of PIK3IP1, LC3II, p53, and Bcl-2 decreased significantly. PIK3IP1 overexpression inhibited H2O2-induced and PI3K-mediated apoptosis; however, PIK3IP1 knockdown reversed this effect, suggesting that PIK3IP1 functions as an anti-apoptotic molecule. To identify both the upstream and downstream molecules associated with PIK3IP1, ET-1 receptor type-specific antagonists (BQ-123 and BQ-788) and PI3K subtype-specific antagonists (LY294002 and IPI-549) were used to determine the participating isoforms. Co-immunoprecipitation was performed to identify the binding partners of PIK3IP1. Our results demonstrated that ROS-induced cardiac cell death may occur through the ETA-PI3Kγ-AKT axis, and that PIK3IP1 inhibits binding with both ETA and PI3Kγ. Taken together, these findings reveal that PIK3IP1 plays an anti-ischemic role by reducing the likelihood of programmed cell death via interaction with the ETA-PI3Kr-AKT axis.
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13
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Ni N, Fang X, Mullens DA, Cai JJ, Ivanov I, Bartholin L, Li Q. Transcriptomic Profiling of Gene Expression Associated with Granulosa Cell Tumor Development in a Mouse Model. Cancers (Basel) 2022; 14:2184. [PMID: 35565312 PMCID: PMC9105549 DOI: 10.3390/cancers14092184] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/05/2022] [Accepted: 04/24/2022] [Indexed: 11/16/2022] Open
Abstract
Ovarian granulosa cell tumors (GCTs) are rare sex cord-stromal tumors, accounting for ~5% ovarian tumors. The etiology of GCTs remains poorly defined. Genetically engineered mouse models are potentially valuable for understanding the pathogenesis of GCTs. Mice harboring constitutively active TGFβ signaling (TGFBR1-CA) develop ovarian GCTs that phenocopy several hormonal and molecular characteristics of human GCTs. To determine molecular alterations in the ovary upon TGFβ signaling activation, we performed transcriptomic profiling of gene expression associated with GCT development using ovaries from 1-month-old TGFBR1-CA mice and age-matched controls. RNA-sequencing and bioinformatics analysis coupled with the validation of select target genes revealed dysregulations of multiple cellular events and signaling molecules/pathways. The differentially expressed genes are enriched not only for known GCT-related pathways and tumorigenic events but also for signaling events potentially mediated by neuroactive ligand-receptor interaction, relaxin signaling, insulin signaling, and complements in TGFBR1-CA ovaries. Additionally, a comparative analysis of our data in mice with genes dysregulated in human GCTs or granulosa cells overexpressing a mutant FOXL2, the genetic hallmark of adult GCTs, identified some common genes altered in both conditions. In summary, this study has revealed the molecular signature of ovarian GCTs in a mouse model that harbors the constitutive activation of TGFBR1. The findings may be further exploited to understand the pathogenesis of a class of poorly defined ovarian tumors.
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Affiliation(s)
- Nan Ni
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA; (N.N.); (X.F.); (J.J.C.)
| | - Xin Fang
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA; (N.N.); (X.F.); (J.J.C.)
| | - Destiny A. Mullens
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX 77843, USA; (D.A.M.); (I.I.)
| | - James J. Cai
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA; (N.N.); (X.F.); (J.J.C.)
| | - Ivan Ivanov
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX 77843, USA; (D.A.M.); (I.I.)
| | - Laurent Bartholin
- INSERM U1052, CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Université Lyon 1, F-69000 Lyon, France;
- Centre Léon Bérard, F-69008 Lyon, France
| | - Qinglei Li
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX 77843, USA; (N.N.); (X.F.); (J.J.C.)
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14
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Simon C, Stielow B, Nist A, Rohner I, Weber LM, Geller M, Fischer S, Stiewe T, Liefke R. The CpG Island-Binding Protein SAMD1 Contributes to an Unfavorable Gene Signature in HepG2 Hepatocellular Carcinoma Cells. BIOLOGY 2022; 11:557. [PMID: 35453756 PMCID: PMC9032685 DOI: 10.3390/biology11040557] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/23/2022] [Accepted: 04/05/2022] [Indexed: 06/14/2023]
Abstract
The unmethylated CpG island-binding protein SAMD1 is upregulated in many human cancer types, but its cancer-related role has not yet been investigated. Here, we used the hepatocellular carcinoma cell line HepG2 as a cancer model and investigated the cellular and transcriptional roles of SAMD1 using ChIP-Seq and RNA-Seq. SAMD1 targets several thousand gene promoters, where it acts predominantly as a transcriptional repressor. HepG2 cells with SAMD1 deletion showed slightly reduced proliferation, but strongly impaired clonogenicity. This phenotype was accompanied by the decreased expression of pro-proliferative genes, including MYC target genes. Consistently, we observed a decrease in the active H3K4me2 histone mark at most promoters, irrespective of SAMD1 binding. Conversely, we noticed an increase in interferon response pathways and a gain of H3K4me2 at a subset of enhancers that were enriched for IFN-stimulated response elements (ISREs). We identified key transcription factor genes, such as IRF1, STAT2, and FOSL2, that were directly repressed by SAMD1. Moreover, SAMD1 deletion also led to the derepression of the PI3K-inhibitor PIK3IP1, contributing to diminished mTOR signaling and ribosome biogenesis pathways. Our work suggests that SAMD1 is involved in establishing a pro-proliferative setting in hepatocellular carcinoma cells. Inhibiting SAMD1's function in liver cancer cells may therefore lead to a more favorable gene signature.
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Affiliation(s)
- Clara Simon
- Institute of Molecular Biology and Tumor Research (IMT), Faculty of Medicine, Philipps University of Marburg, 35043 Marburg, Germany; (C.S.); (B.S.); (I.R.); (L.M.W.); (M.G.); (S.F.)
| | - Bastian Stielow
- Institute of Molecular Biology and Tumor Research (IMT), Faculty of Medicine, Philipps University of Marburg, 35043 Marburg, Germany; (C.S.); (B.S.); (I.R.); (L.M.W.); (M.G.); (S.F.)
| | - Andrea Nist
- Genomics Core Facility, Faculty of Medicine, Institute of Molecular Oncology, Member of the German Center for Lung Research (DZL), Philipps University of Marburg, 35043 Marburg, Germany; (A.N.); (T.S.)
| | - Iris Rohner
- Institute of Molecular Biology and Tumor Research (IMT), Faculty of Medicine, Philipps University of Marburg, 35043 Marburg, Germany; (C.S.); (B.S.); (I.R.); (L.M.W.); (M.G.); (S.F.)
| | - Lisa Marie Weber
- Institute of Molecular Biology and Tumor Research (IMT), Faculty of Medicine, Philipps University of Marburg, 35043 Marburg, Germany; (C.S.); (B.S.); (I.R.); (L.M.W.); (M.G.); (S.F.)
| | - Merle Geller
- Institute of Molecular Biology and Tumor Research (IMT), Faculty of Medicine, Philipps University of Marburg, 35043 Marburg, Germany; (C.S.); (B.S.); (I.R.); (L.M.W.); (M.G.); (S.F.)
| | - Sabrina Fischer
- Institute of Molecular Biology and Tumor Research (IMT), Faculty of Medicine, Philipps University of Marburg, 35043 Marburg, Germany; (C.S.); (B.S.); (I.R.); (L.M.W.); (M.G.); (S.F.)
| | - Thorsten Stiewe
- Genomics Core Facility, Faculty of Medicine, Institute of Molecular Oncology, Member of the German Center for Lung Research (DZL), Philipps University of Marburg, 35043 Marburg, Germany; (A.N.); (T.S.)
| | - Robert Liefke
- Institute of Molecular Biology and Tumor Research (IMT), Faculty of Medicine, Philipps University of Marburg, 35043 Marburg, Germany; (C.S.); (B.S.); (I.R.); (L.M.W.); (M.G.); (S.F.)
- Department of Hematology, Oncology, and Immunology, University Hospital Giessen and Marburg, 35043 Marburg, Germany
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15
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Gheyas R, Ortega-Alvarez R, Chauss D, Kantorow M, Menko AS. Suppression of PI3K signaling is linked to autophagy activation and the spatiotemporal induction of the lens organelle free zone. Exp Cell Res 2022; 412:113043. [PMID: 35101390 PMCID: PMC8859841 DOI: 10.1016/j.yexcr.2022.113043] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Revised: 01/03/2022] [Accepted: 01/18/2022] [Indexed: 12/12/2022]
Abstract
The terminal steps of lens cell differentiation require elimination of all organelles to create a central Organelle Free Zone (OFZ) that is required for lens function of focusing images on the retina. Previous studies show that the spatiotemporal elimination of these organelles during development is autophagy-dependent. We now show that the inhibition of PI3K signaling in lens organ culture results in the premature induction of autophagy within 24 h, including a significant increase in LAMP1+ lysosomes, and the removal of lens organelles from the center of the lens. Specific inhibition of just the PI3K/Akt signaling axis was directly linked to the elimination of mitochondria and ER, while pan-PI3K inhibitors that block all PI3K downstream signaling removed all organelles, including nuclei. Therefore, blocking the PI3K/Akt pathway was alone insufficient to remove nuclei. RNAseq analysis revealed increased mRNA levels of the endogenous inhibitor of PI3K activation, PIK3IP1, in differentiating lens fiber cells preceding the induction of OFZ formation. Co-immunoprecipitation confirmed that PIK3IP1 associates with multiple PI3K p110 isoforms just prior to formation of the OFZ, providing a likely endogenous mechanism for blocking all PI3K signaling and activating the autophagy pathway required to form the OFZ during lens development.
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Affiliation(s)
- Rifah Gheyas
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Ramon Ortega-Alvarez
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Daniel Chauss
- Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, USA
| | - Marc Kantorow
- Schmidt College of Medicine, Florida Atlantic University, Boca Raton, FL, USA
| | - A Sue Menko
- Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA.
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16
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Nuñez R, Rodriguez MJ, Palomares F, Gomez F, Jabato FM, Cordoba-Caballero J, Seoane P, Losada J, Rojo J, Torres MJ, Perkins JR, Mayorga C. Transcriptional changes in dendritic cells underlying allergen specific induced tolerance in a mouse model. Sci Rep 2022; 12:2797. [PMID: 35181694 PMCID: PMC8857182 DOI: 10.1038/s41598-022-06186-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 01/14/2022] [Indexed: 12/13/2022] Open
Abstract
To investigate food allergy-tolerance mechanisms induced through allergen-specific immunotherapy we used RNA-Sequencing to measure gene expression in lymph-node-derived dendritic cells from Pru p 3-anaphylactic mice after immunotherapy with glycodendropeptides at 2 nM and 5 nM, leading to permanent tolerance and short-term desensitization, respectively. Gene expression was also measured in mice receiving no immunotherapy (anaphylaxis); and in which anaphylaxis could never occur (antigen-only). Compared to anaphylaxis, the antigen-only group showed the greatest number of expression-changes (411), followed by tolerant (186) and desensitized (119). Only 29 genes changed in all groups, including Il12b, Cebpb and Ifngr1. The desensitized group showed enrichment for genes related to chronic inflammatory response, secretory granule, and regulation of interleukin-12 production; the tolerant group showed genes related to cytokine receptor activity and glucocorticoid receptor binding, suggesting distinct pathways for similar outcomes. We identified genes and processes potentially involved in the restoration of long-term tolerance via allergen-specific immunotherapy, representing potential prognostic biomarkers.
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Affiliation(s)
- Rafael Nuñez
- Allergy Research Group, Research Laboratory, Allergy Unit, Hospital Regional Universitario de Málaga-IBIMA, Instituto de Investigación Biomédica de Málaga-IBIMA, 29009, Málaga, Spain
| | - Maria Jose Rodriguez
- Allergy Research Group, Research Laboratory, Allergy Unit, Hospital Regional Universitario de Málaga-IBIMA, Instituto de Investigación Biomédica de Málaga-IBIMA, 29009, Málaga, Spain
| | - Francisca Palomares
- Allergy Research Group, Research Laboratory, Allergy Unit, Hospital Regional Universitario de Málaga-IBIMA, Instituto de Investigación Biomédica de Málaga-IBIMA, 29009, Málaga, Spain
| | - Francisca Gomez
- Allergy Clinical Unit, Hospital Regional Universitario de Málaga, Málaga, Spain
| | - Fernando M Jabato
- Department of Molecular Biology and Biochemistry, University of Malaga, Malaga, Spain
| | | | - Pedro Seoane
- Department of Molecular Biology and Biochemistry, University of Malaga, Malaga, Spain
- CIBER de Enfermedades Raras, Instituto de Salud Carlos III, Madrid, Spain
| | - Jorge Losada
- Laboratory of Carbohydrates, Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, Sevilla, Spain
| | - Javier Rojo
- Laboratory of Carbohydrates, Instituto de Investigaciones Químicas (IIQ), CSIC-Universidad de Sevilla, Sevilla, Spain
| | - Maria Jose Torres
- Allergy Research Group, Research Laboratory, Allergy Unit, Hospital Regional Universitario de Málaga-IBIMA, Instituto de Investigación Biomédica de Málaga-IBIMA, 29009, Málaga, Spain
- Allergy Clinical Unit, Hospital Regional Universitario de Málaga, Málaga, Spain
- Nanostructures for Diagnosing and Treatment of Allergic Diseases Laboratory, Centro Andaluz de Nanomedicina y Biotecnología-BIONAND, Málaga, Spain
- Medicine Department, Universidad de Málaga-UMA, Málaga, Spain
| | - James Richard Perkins
- Allergy Research Group, Research Laboratory, Allergy Unit, Hospital Regional Universitario de Málaga-IBIMA, Instituto de Investigación Biomédica de Málaga-IBIMA, 29009, Málaga, Spain
- Department of Molecular Biology and Biochemistry, University of Malaga, Malaga, Spain
- CIBER de Enfermedades Raras, Instituto de Salud Carlos III, Madrid, Spain
| | - Cristobalina Mayorga
- Allergy Research Group, Research Laboratory, Allergy Unit, Hospital Regional Universitario de Málaga-IBIMA, Instituto de Investigación Biomédica de Málaga-IBIMA, 29009, Málaga, Spain.
- Allergy Clinical Unit, Hospital Regional Universitario de Málaga, Málaga, Spain.
- Nanostructures for Diagnosing and Treatment of Allergic Diseases Laboratory, Centro Andaluz de Nanomedicina y Biotecnología-BIONAND, Málaga, Spain.
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17
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Liu X, Yang Y, Song J, Li D, Liu X, Li C, Ma Z, Zhong J, Wang L. Knockdown of forkhead box protein P1 alleviates hypoxia reoxygenation injury in H9c2 cells through regulating Pik3ip1/Akt/eNOS and ROS/mPTP pathway. Bioengineered 2022; 13:1320-1334. [PMID: 35000528 PMCID: PMC8805992 DOI: 10.1080/21655979.2021.2016046] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Forkhead box protein P1 (Foxp1) exerts an extensive array of physiological and pathophysiological impacts on the cardiovascular system. However, the exact function of myocardial Foxp1 in myocardial ischemic reperfusion injury (MIRI) stays largely vague. The hypoxia reoxygenation model of H9c2 cells (the rat ventricular myoblasts) closely mimics myocardial ischemia-reperfusion injury. This report intends to research the effects and mechanisms underlying Foxp1 on H9c2 cells in response to hypoxia (12 h)/reoxygenation (4 h) (HR) stimulation. Expressions of Foxp1 and Phosphatidylinositol 3-kinase interacting protein 1 (Pik3ip1) were both upregulated in ischemia/reperfusion (IR)/HR-induced injury. Stimulation through HR led to marked increases in cellular apoptosis, mitochondrial dysfunction, and superoxide generation in H9c2 cells, which were rescued with knockdown of Foxp1 by siRNA. Silence of Foxp1 depressed expression of Pik3ip1 directly activated the PI3K/Akt/eNOS pathway and promoted nitric oxide (NO) release. Moreover, the knockdown of Foxp1 blunted HR-induced enhancement of reactive oxygen species (ROS) generation, thus alleviating excessive persistence of mitochondrial permeability transition pore (mPTP) opening and decreased mitochondrial apoptosis-associated protein expressions in H9c2 cells. Meanwhile, these cardioprotective effects can be abolished by LY294002, NG-nitro-L-arginine methyl ester (L-NAME), and Atractyloside (ATR), respectively. In summary, our findings indicated that knockdown of Foxp1 prevented HR-induced encouragement of apoptosis and oxidative stress via PI3K/Akt/eNOS signaling activation by targeting Pik3ip1 and improved mitochondrial function by inhibiting ROS-mediated mPTP opening. Inhibition of Foxp1 may be a promising therapeutic avenue for MIRI.
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Affiliation(s)
- Xinming Liu
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Yixing Yang
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Jiawei Song
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Dongjie Li
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Xiaoyan Liu
- Medical Research Center, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Chuang Li
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Zheng Ma
- Department of Cardiology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jiuchang Zhong
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China.,Beijing Institute of Respiratory Medicine, Beijing, China
| | - Lefeng Wang
- Heart Center and Beijing Key Laboratory of Hypertension, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
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18
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Nekhai S, Lin X, Soni S, Taye A, Smith N, Afangbedji N, Saraf SL, Gordeuk VR, Taylor JG, Jerebtsova M. Urinary Kringle Domain-Containing Protein HGFL: A Validated Biomarker of Early Sickle Cell Anemia-Associated Kidney Disease. Am J Nephrol 2021; 52:582-587. [PMID: 34375971 DOI: 10.1159/000517056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 05/04/2021] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Chronic kidney disease (CKD) is a prevalent complication of sickle cell anemia (SCA). Hyperfiltration that delayed detection of CKD is common in SCA patients. Identification of novel urinary biomarkers correlating with glomerular filtration rates may help to detect and predict progression of renal disease. METHODS Reanalysis of mass spectra of urinary samples obtained from University of Illinois at Chicago identified kringle domain-containing protein HGFL. RESULTS HGFL levels correlated with hyperfiltration, were significantly reduced at CKD stage 1 compared to stage 0, negatively correlated with progression of CKD and were suitable for differentiation of stage 1. Better prediction of CKD progression to stage 2 was observed for HGFL-based risk prediction compared to the estimated glomerular filtration rate (eGFR)-based prediction. Results from a Howard University patient cohort supported the utility of HGFL-based test for the differentiation of stage 1 of CKD. CONCLUSION Urinary HGFL may contribute additional information beyond eGFR and improve diagnosis of early-stage CKD in SCA patients.
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Affiliation(s)
- Sergei Nekhai
- Department of Microbiology, College of Medicine, Howard University, Washington, District of Columbia, USA
- Center for Sickle Cell Disease, College of Medicine, Howard University, Washington, District of Columbia, USA
- Department of Medicine, College of Medicine, Howard University, Washington, District of Columbia, USA
| | - Xionghao Lin
- Center for Sickle Cell Disease, College of Medicine, Howard University, Washington, District of Columbia, USA
- Department of Oral Pathology, College of Dentistry, Howard University, Washington, District of Columbia, USA
| | - Simran Soni
- Department of Medicine, College of Medicine, Howard University, Washington, District of Columbia, USA
| | - Ammanuel Taye
- Department of Medicine, College of Medicine, Howard University, Washington, District of Columbia, USA
| | - Nathan Smith
- Department of Medicine, College of Medicine, Howard University, Washington, District of Columbia, USA
| | - Nowah Afangbedji
- Center for Sickle Cell Disease, College of Medicine, Howard University, Washington, District of Columbia, USA
| | - Santosh L Saraf
- Division of Hematology and Oncology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - Victor R Gordeuk
- Division of Hematology and Oncology, Department of Medicine, University of Illinois at Chicago, Chicago, Illinois, USA
| | - James G Taylor
- Center for Sickle Cell Disease, College of Medicine, Howard University, Washington, District of Columbia, USA
- Department of Medicine, College of Medicine, Howard University, Washington, District of Columbia, USA
| | - Marina Jerebtsova
- Department of Microbiology, College of Medicine, Howard University, Washington, District of Columbia, USA
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Chen Z, Yu Q, Yu Q, Johnson J, Shipman R, Zhong X, Huang J, Asthana S, Carlsson C, Okonkwo O, Li L. In-depth Site-specific Analysis of N-glycoproteome in Human Cerebrospinal Fluid and Glycosylation Landscape Changes in Alzheimer's Disease. Mol Cell Proteomics 2021; 20:100081. [PMID: 33862227 PMCID: PMC8724636 DOI: 10.1016/j.mcpro.2021.100081] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Revised: 04/02/2021] [Accepted: 04/03/2021] [Indexed: 01/22/2023] Open
Abstract
As the body fluid that directly interchanges with the extracellular fluid of the central nervous system (CNS), cerebrospinal fluid (CSF) serves as a rich source for CNS-related disease biomarker discovery. Extensive proteome profiling has been conducted for CSF, but studies aimed at unraveling site-specific CSF N-glycoproteome are lacking. Initial efforts into site-specific N-glycoproteomics study in CSF yield limited coverage, hindering further experimental design of glycosylation-based disease biomarker discovery in CSF. In the present study, we have developed an N-glycoproteomic approach that combines enhanced N-glycopeptide sequential enrichment by hydrophilic interaction chromatography (HILIC) and boronic acid enrichment with electron transfer and higher-energy collision dissociation (EThcD) for large-scale intact N-glycopeptide analysis. The application of the developed approach to the analyses of human CSF samples enabled identifications of a total of 2893 intact N-glycopeptides from 511 N-glycosites and 285 N-glycoproteins. To our knowledge, this is the largest site-specific N-glycoproteome dataset reported for CSF to date. Such dataset provides molecular basis for a better understanding of the structure-function relationships of glycoproteins and their roles in CNS-related physiological and pathological processes. As accumulating evidence suggests that defects in glycosylation are involved in Alzheimer's disease (AD) pathogenesis, in the present study, a comparative in-depth N-glycoproteomic analysis was conducted for CSF samples from healthy control and AD patients, which yielded a comparable N-glycoproteome coverage but a distinct expression pattern for different categories of glycoforms, such as decreased fucosylation in AD CSF samples. Altered glycosylation patterns were detected for a number of N-glycoproteins including alpha-1-antichymotrypsin, ephrin-A3 and carnosinase CN1 etc., which serve as potentially interesting targets for further glycosylation-based AD study and may eventually lead to molecular elucidation of the role of glycosylation in AD progression.
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Affiliation(s)
- Zhengwei Chen
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin, USA
| | - Qinying Yu
- School of Pharmacy, University of Wisconsin, Madison, Wisconsin, USA
| | - Qing Yu
- School of Pharmacy, University of Wisconsin, Madison, Wisconsin, USA
| | - Jillian Johnson
- School of Pharmacy, University of Wisconsin, Madison, Wisconsin, USA
| | - Richard Shipman
- Department of Applied Science, University of Wisconsin-Stout, Menomonie, Wisconsin, USA
| | - Xiaofang Zhong
- School of Pharmacy, University of Wisconsin, Madison, Wisconsin, USA
| | - Junfeng Huang
- School of Pharmacy, University of Wisconsin, Madison, Wisconsin, USA
| | - Sanjay Asthana
- School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin, USA
| | - Cynthia Carlsson
- School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin, USA
| | - Ozioma Okonkwo
- School of Medicine and Public Health, University of Wisconsin, Madison, Wisconsin, USA
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin, USA; School of Pharmacy, University of Wisconsin, Madison, Wisconsin, USA.
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20
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Whitehouse JP, Howlett M, Hii H, Mayoh C, Wong M, Barahona P, Ajuyah P, White CL, Buntine MK, Dyke JM, Lee S, Valvi S, Stanley J, Andradas C, Carline B, Kuchibhotla M, Ekert PG, Cowley MJ, Gottardo NG, Endersby R. A Novel Orthotopic Patient-Derived Xenograft Model of Radiation-Induced Glioma Following Medulloblastoma. Cancers (Basel) 2020; 12:cancers12102937. [PMID: 33053751 PMCID: PMC7600047 DOI: 10.3390/cancers12102937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 10/08/2020] [Accepted: 10/09/2020] [Indexed: 12/11/2022] Open
Abstract
Radiation-induced glioma (RIG) is a highly aggressive brain cancer arising as a consequence of radiation therapy. We report a case of RIG that arose in the brain stem following treatment for paediatric medulloblastoma, and the development and characterisation of a matched orthotopic patient-derived xenograft (PDX) model (TK-RIG915). Patient and PDX tumours were analysed using DNA methylation profiling, whole genome sequencing (WGS) and RNA sequencing. While initially thought to be a diffuse intrinsic pontine glioma (DIPG) based on disease location, results from methylation profiling and WGS were not consistent with this diagnosis. Furthermore, clustering analyses based on RNA expression suggested the tumours were distinct from primary DIPG. Additional gene expression analysis demonstrated concordance with a published RIG expression profile. Multiple genetic alterations that enhance PI3K/AKT and Ras/Raf/MEK/ERK signalling were discovered in TK-RIG915 including an activating mutation in PIK3CA, upregulation of PDGFRA and AKT2, inactivating mutations in NF1, and a gain-of-function mutation in PTPN11. Additionally, deletion of CDKN2A/B, increased IDH1 expression, and decreased ARID1A expression were observed. Detection of phosphorylated S6, 4EBP1 and ERK via immunohistochemistry confirmed PI3K pathway and ERK activation. Here, we report one of the first PDX models for RIG, which recapitulates the patient disease and is molecularly distinct from primary brain stem glioma. Genetic interrogation of this model has enabled the identification of potential therapeutic vulnerabilities in this currently incurable disease.
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Affiliation(s)
- Jacqueline P. Whitehouse
- Brain Tumour Research Program, Telethon Kids Institute, Nedlands 6009, Australia; (J.P.W.); (M.H.); (H.H.); (S.V.); (J.S.); (C.A.); (B.C.); (M.K.); (N.G.G.)
- Centre for Child Health Research, University of Western Australia, Nedlands 6009, Australia
| | - Meegan Howlett
- Brain Tumour Research Program, Telethon Kids Institute, Nedlands 6009, Australia; (J.P.W.); (M.H.); (H.H.); (S.V.); (J.S.); (C.A.); (B.C.); (M.K.); (N.G.G.)
- Centre for Child Health Research, University of Western Australia, Nedlands 6009, Australia
| | - Hilary Hii
- Brain Tumour Research Program, Telethon Kids Institute, Nedlands 6009, Australia; (J.P.W.); (M.H.); (H.H.); (S.V.); (J.S.); (C.A.); (B.C.); (M.K.); (N.G.G.)
| | - Chelsea Mayoh
- Children’s Cancer Institute, Lowy Cancer Centre, UNSW Sydney, Kensington 2033, Australia; (C.M.); (M.W.); (P.B.); (P.A.); (P.G.E.); (M.J.C.)
- School of Women’s and Children’s Health, UNSW Sydney, Kensington 2033, Australia
| | - Marie Wong
- Children’s Cancer Institute, Lowy Cancer Centre, UNSW Sydney, Kensington 2033, Australia; (C.M.); (M.W.); (P.B.); (P.A.); (P.G.E.); (M.J.C.)
- School of Women’s and Children’s Health, UNSW Sydney, Kensington 2033, Australia
| | - Paulette Barahona
- Children’s Cancer Institute, Lowy Cancer Centre, UNSW Sydney, Kensington 2033, Australia; (C.M.); (M.W.); (P.B.); (P.A.); (P.G.E.); (M.J.C.)
| | - Pamela Ajuyah
- Children’s Cancer Institute, Lowy Cancer Centre, UNSW Sydney, Kensington 2033, Australia; (C.M.); (M.W.); (P.B.); (P.A.); (P.G.E.); (M.J.C.)
| | - Christine L. White
- Genetics and Molecular Pathology Laboratory, Hudson Institute of Medical Research, Clayton 3168, Victoria, Australia; (C.L.W.); (M.K.B.)
- Department of Molecular and Translational Science, Monash University, Melbourne 3168, Victoria, Australia
| | - Molly K. Buntine
- Genetics and Molecular Pathology Laboratory, Hudson Institute of Medical Research, Clayton 3168, Victoria, Australia; (C.L.W.); (M.K.B.)
- Department of Molecular and Translational Science, Monash University, Melbourne 3168, Victoria, Australia
| | - Jason M. Dyke
- Department of Neuropathology, PathWest Laboratory Medicine, Royal Perth Hospital, Perth 6000, Australia;
- Pathology and Laboratory Medicine, University of Western Australia, Nedlands 6009, Australia
| | - Sharon Lee
- Department of Neurosurgery, Perth Children’s Hospital, Nedlands 6009, Australia;
| | - Santosh Valvi
- Brain Tumour Research Program, Telethon Kids Institute, Nedlands 6009, Australia; (J.P.W.); (M.H.); (H.H.); (S.V.); (J.S.); (C.A.); (B.C.); (M.K.); (N.G.G.)
- Department of Paediatric and Adolescent Oncology/Haematology, Perth Children’s Hospital, Nedlands 6009, Australia
- Division of Paediatrics, University of Western Australia Medical School, Nedlands 6009, Australia
| | - Jason Stanley
- Brain Tumour Research Program, Telethon Kids Institute, Nedlands 6009, Australia; (J.P.W.); (M.H.); (H.H.); (S.V.); (J.S.); (C.A.); (B.C.); (M.K.); (N.G.G.)
- Centre for Child Health Research, University of Western Australia, Nedlands 6009, Australia
| | - Clara Andradas
- Brain Tumour Research Program, Telethon Kids Institute, Nedlands 6009, Australia; (J.P.W.); (M.H.); (H.H.); (S.V.); (J.S.); (C.A.); (B.C.); (M.K.); (N.G.G.)
- Centre for Child Health Research, University of Western Australia, Nedlands 6009, Australia
| | - Brooke Carline
- Brain Tumour Research Program, Telethon Kids Institute, Nedlands 6009, Australia; (J.P.W.); (M.H.); (H.H.); (S.V.); (J.S.); (C.A.); (B.C.); (M.K.); (N.G.G.)
| | - Mani Kuchibhotla
- Brain Tumour Research Program, Telethon Kids Institute, Nedlands 6009, Australia; (J.P.W.); (M.H.); (H.H.); (S.V.); (J.S.); (C.A.); (B.C.); (M.K.); (N.G.G.)
| | - Paul G. Ekert
- Children’s Cancer Institute, Lowy Cancer Centre, UNSW Sydney, Kensington 2033, Australia; (C.M.); (M.W.); (P.B.); (P.A.); (P.G.E.); (M.J.C.)
- School of Women’s and Children’s Health, UNSW Sydney, Kensington 2033, Australia
- Murdoch Children’s Research Institute, Royal Children’s Hospital, Parkville 3052, Victoria, Australia
- Peter MacCallum Cancer Centre, Melbourne 3000, Victoria, Australia
| | - Mark J. Cowley
- Children’s Cancer Institute, Lowy Cancer Centre, UNSW Sydney, Kensington 2033, Australia; (C.M.); (M.W.); (P.B.); (P.A.); (P.G.E.); (M.J.C.)
- School of Women’s and Children’s Health, UNSW Sydney, Kensington 2033, Australia
| | - Nicholas G. Gottardo
- Brain Tumour Research Program, Telethon Kids Institute, Nedlands 6009, Australia; (J.P.W.); (M.H.); (H.H.); (S.V.); (J.S.); (C.A.); (B.C.); (M.K.); (N.G.G.)
- Centre for Child Health Research, University of Western Australia, Nedlands 6009, Australia
- Department of Paediatric and Adolescent Oncology/Haematology, Perth Children’s Hospital, Nedlands 6009, Australia
| | - Raelene Endersby
- Brain Tumour Research Program, Telethon Kids Institute, Nedlands 6009, Australia; (J.P.W.); (M.H.); (H.H.); (S.V.); (J.S.); (C.A.); (B.C.); (M.K.); (N.G.G.)
- Centre for Child Health Research, University of Western Australia, Nedlands 6009, Australia
- Correspondence:
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Abstract
Virtually all aspects of T and B lymphocyte development, homeostasis, activation, and effector function are impacted by the interaction of their clonally distributed antigen receptors with antigens encountered in their respective environments. Antigen receptors mediate their effects by modulating intracellular signaling pathways that ultimately impinge on the cytoskeleton, bioenergetic pathways, transcription, and translation. Although these signaling pathways are rather well described at this point, especially those steps that are most receptor-proximal, how such pathways contribute to more quantitative aspects of lymphocyte function is still being elucidated. One of the signaling pathways that appears to be involved in this “tuning” process is controlled by the lipid kinase PI3K. Here we review recent key findings regarding both the triggering/enhancement of PI3K signals (via BCAP and ICOS) as well as their regulation (via PIK3IP1 and PHLPP) and how these signals integrate and determine cellular processes. Lymphocytes display tremendous functional plasticity, adjusting their metabolism and gene expression programs to specific conditions depending on their tissue of residence and the nature of the infectious threat to which they are responding. We give an overview of recent findings that have contributed to this model, with a focus on T cells, including what has been learned from patients with gain-of-function mutations in PI3K as well as lessons from cancer immunotherapy approaches.
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Affiliation(s)
- Benjamin Murter
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15261, USA
| | - Lawrence P Kane
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15261, USA
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22
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RiPerC Attenuates Cerebral Ischemia Injury through Regulation of miR-98/PIK3IP1/PI3K/AKT Signaling Pathway. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:6454281. [PMID: 33082912 PMCID: PMC7559836 DOI: 10.1155/2020/6454281] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Revised: 09/11/2020] [Accepted: 09/19/2020] [Indexed: 02/06/2023]
Abstract
Background Cerebral ischemic stroke is a refractory disease which seriously endangers human health. Remote ischemic perconditioning (RiPerC) by which the sublethal ischemic stimulus is administered during the ischemic event is beneficial after an acute stroke. However, the regulatory mechanism of RiPerC that relieves cerebral ischemic injury is still not completely clear. Methods In the present study, we investigated the regulatory mechanism of RiPerC in a rat model of ischemia induced by the middle cerebral artery occlusion (MCAO). Forty-eight adult male Sprague-Dawley (SD) rats were injected intracerebroventricularly with miR-98 agomir, miR-98 antagomir, or their negative controls (agomir-NC, antagomir-NC) 2 h before MCAO or MCAO+RiPerC followed by animal behavior tests and infraction volume measurement at 24 h after MCAO. The expression of miR-98, PIK3IP1, and tight junction proteins in rat hippocampus and cerebral cortex tissues was detected by quantitative polymerase chain reaction (qPCR) and Western blot (WB). Enzyme-linked immunosorbent assay (ELISA) was used to assess the IL-1β, IL-6, and TNF-α levels in the rat serum. Results The results showed that in MCAO group, the expression of PIK3IP1 was upregulated, but decreased after RiPerC treatment. Then, we found that PIK3IP1 was a potential target of miR-98. Treatment with miR-98 agomir decreased the infraction volume, reduced brain edema, and improved neurological functions compared to control rats. But treating with miR-98 antagomir in RiPerC group, the protective effect on cerebral ischemia injury was canceled. Conclusion Our finding indicated that RiPerC inhibited the MCAO-induced expression of PIK3IP1 through upregulated miR-98, thereby reducing the apoptosis induced by PIK3IP1 through the PI3K/AKT signaling pathway, thus reducing the cerebral ischemia-reperfusion injury.
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23
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Ottens K, Schneider J, Kane LP, Satterthwaite AB. PIK3IP1 Promotes Extrafollicular Class Switching in T-Dependent Immune Responses. THE JOURNAL OF IMMUNOLOGY 2020; 205:2100-2108. [PMID: 32887751 DOI: 10.4049/jimmunol.2000584] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 08/10/2020] [Indexed: 01/13/2023]
Abstract
PI3K plays multiple roles throughout the life of a B cell. As such, its signaling is tightly regulated. The importance of this is illustrated by the fact that both loss- and gain-of-function mutations in PI3K can cause immunodeficiency in humans. PIK3IP1, also known as TrIP, is a transmembrane protein that has been shown to inhibit PI3K in T cells. Results from the ImmGen Consortium indicate that PIK3IP1 expression fluctuates throughout B cell development in a manner inversely correlated with PI3K activity; however, its role in B cells is poorly understood. In this study, we define the consequences of B cell-specific deletion of PIK3IP1. B cell development, basal Ig levels, and T-independent responses were unaffected by loss of PIK3IP1. However, there was a significant delay in the production of IgG during T-dependent responses, and secondary responses were impaired. This is likely due to a role for PIK3IP1 in the extrafollicular response because germinal center formation and affinity maturation were normal, and PIK3IP1 is not appreciably expressed in germinal center B cells. Consistent with a role early in the response, PIK3IP1 was downregulated at late time points after B cell activation, in a manner dependent on PI3K. Increased activation of the PI3K pathway was observed in PIK3IP1-deficient B cells in response to engagement of both the BCR and CD40 or strong cross-linking of CD40 alone. Taken together, these observations suggest that PIK3IP1 promotes extrafollicular responses by limiting PI3K signaling during initial interactions between B and T cells.
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Affiliation(s)
- Kristina Ottens
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Jalyn Schneider
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Lawrence P Kane
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261; and
| | - Anne B Satterthwaite
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390; .,Department of Immunology, University of Texas Southwestern Medical Center, Dallas, TX 75390
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24
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Sun HX, Yang ZF, Tang WG, Ke AW, Liu WR, Li Y, Gao C, Hu B, Fu PY, Yu MC, Gao BW, Shi YH, Fan J, Xu Y. MicroRNA-19a-3p regulates cell growth through modulation of the PIK3IP1-AKT pathway in hepatocellular carcinoma. J Cancer 2020; 11:2476-2484. [PMID: 32201518 PMCID: PMC7066004 DOI: 10.7150/jca.37748] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 01/02/2020] [Indexed: 02/06/2023] Open
Abstract
There are some controversies about the involvement of microRNA (miR)-19a-3p in hepatocellular carcinoma (HCC) biology, even though many studies have shown that it plays an important role in cancer. In this study, we found that miR-19a-3p is usually overexpressed in HCC tissues compared with corresponding peritumorous tissues, and its expression was associated with tumor size and poor overall survival. MiR-19a-3p promoted cell proliferation significantly, and more cells were found in the S phase. In vivo, miR-19a-3p promoted liver tumor growth, and more HCC cells were found in the active cell cycle. Sequencing and bioinformatics analysis predicted that PIK3IP1 is a likely target gene of miR-19a-3p, and we next confirmed it by luciferase and rescue assays. Altogether, our data showed an important role of PIK3IP1 downregulation by miR-19a-3p in HCC progression, and the miR-19a-3p-PIK3IP1-AKT pathway may be a potential therapeutic target.
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Affiliation(s)
- Hai-Xiang Sun
- Liver Cancer Institute, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China
| | - Zhang-Fu Yang
- Department of Liver Surgery and Transplantation, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China
| | - Wei-Guo Tang
- Minhang Hospital, Fudan University; Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai 200032, China
| | - Ai-Wu Ke
- Liver Cancer Institute, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China
| | - Wei-Ren Liu
- Department of Liver Surgery and Transplantation, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China
| | - Yan Li
- Liver Cancer Institute, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China
| | - Chao Gao
- Institute of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Bo Hu
- Department of Liver Surgery and Transplantation, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China
| | - Pei-Yao Fu
- Department of Liver Surgery and Transplantation, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China
| | - Min-Cheng Yu
- Department of Liver Surgery and Transplantation, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China
| | - Bo-Wen Gao
- Department of Liver Surgery and Transplantation, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China
| | - Ying-Hong Shi
- Department of Liver Surgery and Transplantation, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China
| | - Jia Fan
- Liver Cancer Institute, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China.,Department of Liver Surgery and Transplantation, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China.,Institute of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Yang Xu
- Department of Liver Surgery and Transplantation, Zhongshan Hospital, Fudan University; Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai 200032, China
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Santorelli L, Capitoli G, Chinello C, Piga I, Clerici F, Denti V, Smith A, Grasso A, Raimondo F, Grasso M, Magni F. In-Depth Mapping of the Urinary N-Glycoproteome: Distinct Signatures of ccRCC-related Progression. Cancers (Basel) 2020; 12:E239. [PMID: 31963743 PMCID: PMC7016614 DOI: 10.3390/cancers12010239] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/12/2020] [Accepted: 01/14/2020] [Indexed: 12/15/2022] Open
Abstract
Protein N-glycosylation is one of the most important post-translational modifications and is involved in many biological processes, with aberrant changes in protein N-glycosylation patterns being closely associated with several diseases, including the progression and spreading of tumours. In light of this, identifying these aberrant protein glycoforms in tumours could be useful for understanding the molecular mechanism of this multifactorial disease, developing specific biomarkers and finding novel therapeutic targets. We investigated the urinary N-glycoproteome of clear cell renal cell carcinoma (ccRCC) patients at different stages (n = 15 at pT1 and n = 15 at pT3), and of non-ccRCC subjects (n = 15), using an N-glyco-FASP-based method. Using label-free nLC-ESI MS/MS, we identified and quantified several N-glycoproteins with altered expression and abnormal changes affecting the occupancy of the glycosylation site in the urine of RCC patients compared to control. In particular, nine of them had a specific trend that was directly related to the stage progression: CD97, COCH and P3IP1 were up-expressed whilst APOB, FINC, CERU, CFAH, HPT and PLTP were down-expressed in ccRCC patients. Overall, these results expand our knowledge related to the role of this post-translational modification in ccRCC and translation of this information into pre-clinical studies could have a significant impact on the discovery of novel biomarkers and therapeutic target in kidney cancer.
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Affiliation(s)
- Lucia Santorelli
- Clinical Proteomics and Metabolomics Unit, School of Medicine and Surgery, University of Milano-Bicocca, 20854 Vedano al Lambro, Italy; (C.C.); (I.P.); (F.C.); (V.D.); (A.S.); (F.R.); (F.M.)
| | - Giulia Capitoli
- Centre of Biostatistics for Clinical Epidemiology, School of Medicine and Surgery, University of Milano-Bicocca, 20854 Vedano al Lambro, Italy;
| | - Clizia Chinello
- Clinical Proteomics and Metabolomics Unit, School of Medicine and Surgery, University of Milano-Bicocca, 20854 Vedano al Lambro, Italy; (C.C.); (I.P.); (F.C.); (V.D.); (A.S.); (F.R.); (F.M.)
| | - Isabella Piga
- Clinical Proteomics and Metabolomics Unit, School of Medicine and Surgery, University of Milano-Bicocca, 20854 Vedano al Lambro, Italy; (C.C.); (I.P.); (F.C.); (V.D.); (A.S.); (F.R.); (F.M.)
| | - Francesca Clerici
- Clinical Proteomics and Metabolomics Unit, School of Medicine and Surgery, University of Milano-Bicocca, 20854 Vedano al Lambro, Italy; (C.C.); (I.P.); (F.C.); (V.D.); (A.S.); (F.R.); (F.M.)
| | - Vanna Denti
- Clinical Proteomics and Metabolomics Unit, School of Medicine and Surgery, University of Milano-Bicocca, 20854 Vedano al Lambro, Italy; (C.C.); (I.P.); (F.C.); (V.D.); (A.S.); (F.R.); (F.M.)
| | - Andrew Smith
- Clinical Proteomics and Metabolomics Unit, School of Medicine and Surgery, University of Milano-Bicocca, 20854 Vedano al Lambro, Italy; (C.C.); (I.P.); (F.C.); (V.D.); (A.S.); (F.R.); (F.M.)
| | - Angelica Grasso
- Urology Service, Department of Surgery, EOC Beata Vergine Regional Hospital, 23, 6850 Mendrisio, Switzerland;
| | - Francesca Raimondo
- Clinical Proteomics and Metabolomics Unit, School of Medicine and Surgery, University of Milano-Bicocca, 20854 Vedano al Lambro, Italy; (C.C.); (I.P.); (F.C.); (V.D.); (A.S.); (F.R.); (F.M.)
| | - Marco Grasso
- Urology Unit, S. Gerardo Hospital, 20900 Monza, Italy;
| | - Fulvio Magni
- Clinical Proteomics and Metabolomics Unit, School of Medicine and Surgery, University of Milano-Bicocca, 20854 Vedano al Lambro, Italy; (C.C.); (I.P.); (F.C.); (V.D.); (A.S.); (F.R.); (F.M.)
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A Ras-LSD1 axis activates PI3K signaling through PIK3IP1 suppression. Oncogenesis 2020; 9:2. [PMID: 31900384 PMCID: PMC6949251 DOI: 10.1038/s41389-019-0185-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 11/28/2019] [Accepted: 11/29/2019] [Indexed: 02/07/2023] Open
Abstract
PI3K Interacting Protein 1 (PIK3IP1) is a suppressor of the PI3K/Akt/mTOR pathway. We previously reported that activated Ras suppresses PIK3IP1 expression to positively regulate the PI3K pathway in cancer cells. Using doxycycline-inducible PIK3IP1, here we confirm that reversing the effect of Ras by inducing expression of PIK3IP1 suppresses Ras-induced anchorage-independent growth, supporting the central role of PIK3IP1 in transformation. However, the molecular mechanisms by which Ras-activation that causes loss of PIK3IP1 expression are unknown. We find that Ras activity represses PIK3IP1 expression via the recruitment of lysine-specific demethylase 1 (LSD1) to the PIK3IP1 gene promoter and enhancer, resulting in erasure of active histone marks. These studies demonstrate cross-activation of Ras/Raf/MEK/ERK and PI3K/AKT/mTOR pathways, where Ras decommissions PIK3IP1 gene expression by enhancing LSD1 and its corepressor activities to suppress PIK3IP1 transcription.
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27
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Fukumoto T, Park PH, Wu S, Fatkhutdinov N, Karakashev S, Nacarelli T, Kossenkov AV, Speicher DW, Jean S, Zhang L, Wang TL, Shih IM, Conejo-Garcia JR, Bitler BG, Zhang R. Repurposing Pan-HDAC Inhibitors for ARID1A-Mutated Ovarian Cancer. Cell Rep 2019; 22:3393-3400. [PMID: 29590609 PMCID: PMC5903572 DOI: 10.1016/j.celrep.2018.03.019] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/13/2018] [Accepted: 03/01/2018] [Indexed: 01/17/2023] Open
Abstract
ARID1A , a subunit of the SWI/SNF complex, is among the most frequently mutated genes across cancer types. ARID1A is mutated in more than 50% of ovarian clear cell carcinomas (OCCCs), diseases that have no effective therapy. Here, we show that ARID1A mutation confers sensitivity to pan-HDAC inhibitors such as SAHA in ovarian cancers. This correlated with enhanced growth suppression induced by the inhibition of HDAC2 activity in ARID1A-mutated cells. HDAC2 interacts with EZH2 in an ARID1A status-dependent manner. HDAC2 functions as a co-repressor of EZH2 to suppress the expression of EZH2/ARID1A target tumor suppressor genes such as PIK3IP1 to inhibit proliferation and promote apoptosis. SAHA reduced the growth and ascites of the ARID1A-inactivated OCCCs in both orthotopic and genetic mouse models. This correlated with a significant improvement of survival of mice bearing ARID1A-mutated OCCCs. These findings provided preclinical rationales for repurposing FDA-approved pan-HDAC inhibitors for treating ARID1A-mutated cancers.
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Affiliation(s)
- Takeshi Fukumoto
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104, USA
| | - Pyoung Hwa Park
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104, USA
| | - Shuai Wu
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104, USA
| | - Nail Fatkhutdinov
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104, USA; Kazan Federal University, Kazan, Russia
| | - Sergey Karakashev
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104, USA
| | - Timothy Nacarelli
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104, USA
| | - Andrew V Kossenkov
- Center for Systems and Computational Biology, The Wistar Institute, Philadelphia, PA 19104, USA
| | - David W Speicher
- Center for Systems and Computational Biology, The Wistar Institute, Philadelphia, PA 19104, USA; Molecular and Cellular Oncogenesis Program, The Wistar Institute, Philadelphia, PA 19104, USA
| | - Stephanie Jean
- Helen F. Graham Cancer Center & Research Institute, Newark, DE 19713, USA
| | - Lin Zhang
- Department of Obstetrics and Gynecology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA 19104, USA
| | - Tian-Li Wang
- Departments of Pathology and Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, MD 21231, USA
| | - Ie-Ming Shih
- Departments of Pathology and Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, MD 21231, USA
| | | | - Benjamin G Bitler
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104, USA.
| | - Rugang Zhang
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, PA 19104, USA.
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28
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Chen Y, Wang J, Wang X, Li X, Song J, Fang J, Liu X, Liu T, Wang D, Li Q, Wen S, Ma D, Xia J, Luo L, Zheng SG, Cui J, Zeng G, Chen L, Cheng B, Wang Z. Pik3ip1 Is a Negative Immune Regulator that Inhibits Antitumor T-Cell Immunity. Clin Cancer Res 2019; 25:6180-6194. [PMID: 31350312 DOI: 10.1158/1078-0432.ccr-18-4134] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 04/19/2019] [Accepted: 07/24/2019] [Indexed: 11/16/2022]
Abstract
PURPOSE Multiple negative regulators restrict the ability of T cells to attack tumors. This work demonstrates the role of PI3K-interacting protein 1 (Pik3ip1) in restraining T-cell responses and antitumor immunity. EXPERIMENTAL DESIGN An anti-Pik3ip1 mAb was generated to identify the Pik3ip1 expression pattern of hematopoietic cells. Pik3ip1 -/- mice and a Pik3ip1 fusion protein were generated to investigate the effect of Pik3ip1 on T-cell-mediated antitumor immunity in MC38 and B16-F10 tumor models. Immunoblotting and confocal microscopy were used to identify inhibitory effects of Pik3ip1 on T-cell receptor (TCR) signaling. Pik3ip1 expression was quantified, and its impact on T-cell function in human tumors was measured. RESULTS We demonstrated that Pik3ip1 was predominantly expressed on T cells and served as an essential rheostat for T-cell-mediated immunity. A Pik3ip1 genetic deficiency led to enhanced T-cell responsiveness upon immunization with a neoantigen. Pik3ip1 -/- mice exhibited a marked increase in antitumor immunity and were resistant to tumor growth. Furthermore, Pik3ip1 extracellular domain fusion protein enhanced MC38 tumor growth was observed. Mechanistically, we found that Pik3ip1 inhibited TCR signaling by mediating the degradation of SLP76 through Pik3ip1 oligomerization via its extracellular region. Consistent with the results from the mouse models, PIK3IP1 expression correlated with T-cell dysfunction in human tumors. CONCLUSIONS Our data reveal a critical role for Pik3ip1 as a novel inhibitory immune regulator of T-cell responses and provide a potential molecular target for cancer immunotherapy.
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Affiliation(s)
- Yichen Chen
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Jun Wang
- Department of Immunobiology and Yale Cancer Center, Yale University, New Haven, Connecticut
| | - Xi Wang
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Xinye Li
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Jingjing Song
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Juan Fang
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Xiangqi Liu
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Tao Liu
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, P.R. China
| | - Dikan Wang
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Qunxing Li
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Shuqiong Wen
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Da Ma
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Juan Xia
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China
| | - Liqun Luo
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, P.R. China
| | - Song Guo Zheng
- Department of Internal Medicine, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, Ohio
| | - Jun Cui
- MOE Key Laboratory of Gene Function and Regulation, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, P.R. China
| | - Gucheng Zeng
- Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, P.R. China
| | - Lieping Chen
- Department of Immunobiology and Yale Cancer Center, Yale University, New Haven, Connecticut
| | - Bin Cheng
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China.
| | - Zhi Wang
- Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Stomatological Hospital, Sun Yat-Sen University, Guangzhou, P.R. China.
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29
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Fu Y, Li S, Tong H, Li S, Yan Y. WDR13 promotes the differentiation of bovine skeletal muscle-derived satellite cells by affecting PI3K/AKT signaling. Cell Biol Int 2019; 43:799-808. [PMID: 31050064 DOI: 10.1002/cbin.11160] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 04/29/2019] [Indexed: 01/28/2023]
Abstract
Muscle satellite cells are usually at rest, and when externally stimulated or regulated, they can be further differentiated by cell fusion to form new myotubes and muscle fibers. WD repeat domain 13 (WDR13) is highly conserved in vertebrates. Studies have shown that mice lacking the Wdr13 gene develop mild obesity, hyperinsulinemia, and increased islet β cell proliferation. However, the role of WDR13 in bovine cells is unclear. Here, we investigated the effect of WDR13 on bovine skeletal muscle-derived satellite cells (MDSCs). We found that WDR13 was upregulated in bovine MDSCs using western blotting and immunofluorescence experiments. Moreover, activation and inhibition of WDR13 expression increased and decreased cell differentiation, respectively, suggesting that WDR13 promotes bovine MDSC differentiation. To further understand the mechanism of action of WDR13, we examined changes in the PI3K/AKT signaling pathway following WDR13 activation or inhibition. In addition, cells were treated with a phosphoinositide kinase 3 (PI3K) inhibitor, LY294004, to observe cell differentiation. The results showed that activation of WDR13 inhibited the PI3K/AKT signaling pathway and enhanced cell differentiation. These data suggest that WDR13 can promote the differentiation of bovine MDSCs by affecting the PI3K/AKT signaling pathway.
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Affiliation(s)
- Yuying Fu
- The Laboratory of Cell and Development, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Shuang Li
- The Laboratory of Cell and Development, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Huili Tong
- The Laboratory of Cell and Development, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Shufeng Li
- The Laboratory of Cell and Development, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
| | - Yunqin Yan
- The Laboratory of Cell and Development, Northeast Agricultural University, Harbin, 150030, Heilongjiang, China
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30
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FOXO3 is involved in the tumor necrosis factor-driven inflammatory response in fibroblast-like synoviocytes. J Transl Med 2019; 99:648-658. [PMID: 30679758 DOI: 10.1038/s41374-018-0184-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 11/14/2018] [Accepted: 11/26/2018] [Indexed: 01/06/2023] Open
Abstract
Fibroblast-like synoviocytes (FLS) are major contributors to joint inflammation in rheumatoid arthritis (RA). Forkhead box O 3 (FOXO3) perturbations in immune cells are increasingly linked to RA pathogenesis. Here, we show that FOXO3 is distinctly inactivated/phosphorylated in the FLS of rheumatoid synovitis. In vitro, stimulation of FLS with tumor necrosis factor-alpha α (TNFα) induced a rapid and sustained inactivation of FOXO3. mRNA profiling revealed that the inactivation of FOXO3 is important for the sustained pro-inflammatory interferon response to TNFα (CXCL9, CXCL10, CXCL11, and TNFSF18). Mechanistically, our studies demonstrate that the inactivation of FOXO3 results from TNF-induced downregulation of phosphoinositide-3-kinase-interacting protein 1 (PIK3IP1). Thus, we identified FOXO3 and its modulator PIK3IP1 as a critical regulatory circuit for the inflammatory response of the resident mesenchymal cells to TNFα and contribute insight into how the synovial tissue brings about chronic inflammation that is driven by TNFα.
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31
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Li S, Fu Y, Pang Y, Tong H, Li S, Yan Y. GRP94 promotes muscle differentiation by inhibiting the PI3K/AKT/mTOR signaling pathway. J Cell Physiol 2019; 234:21211-21223. [DOI: 10.1002/jcp.28727] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Revised: 03/28/2019] [Accepted: 04/11/2019] [Indexed: 01/01/2023]
Affiliation(s)
- Shuang Li
- The Laboratory of Cell and Development Northeast Agricultural University Harbin Heilongjiang China
| | - Yuying Fu
- The Laboratory of Cell and Development Northeast Agricultural University Harbin Heilongjiang China
| | - Yusheng Pang
- The Laboratory of Cell and Development Northeast Agricultural University Harbin Heilongjiang China
| | - Huili Tong
- The Laboratory of Cell and Development Northeast Agricultural University Harbin Heilongjiang China
| | - Shufeng Li
- The Laboratory of Cell and Development Northeast Agricultural University Harbin Heilongjiang China
| | - Yunqin Yan
- The Laboratory of Cell and Development Northeast Agricultural University Harbin Heilongjiang China
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32
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Identification of potential target genes associated with the reversion of androgen-dependent skeletal muscle atrophy. Arch Biochem Biophys 2019; 663:173-182. [PMID: 30639329 DOI: 10.1016/j.abb.2019.01.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 01/04/2019] [Accepted: 01/09/2019] [Indexed: 12/19/2022]
Abstract
Muscle wasting or atrophy is extensively associated with human systemic diseases including diabetes, cancer, and kidney failure. Accumulating evidence from transcriptional profiles has noted that a common set of genes, termed atrogenes, is modulated in atrophying muscles. However, the transcriptional changes that trigger the reversion or attenuation of muscle atrophy have not been characterized at the molecular level until now. Here, we applied cDNA microarrays to investigate the transcriptional response of androgen-sensitive Levator ani muscle (LA) during atrophy reversion. Most of the differentially expressed genes behaved as atrogenes and responded to castration-induced atrophy. However, seven genes (APLN, DUSP5, IGF1, PIK3IP1, KLHL38, PI15, and MKL1) did not respond to castration but instead responded exclusively to testosterone replacement. Considering that almost all proteins encoded by these genes are associated with the reversion of atrophy and may function as regulators of cell proliferation/growth, our results provide new perspectives on the existence of anti-atrogenes.
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33
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Uche UU, Piccirillo AR, Kataoka S, Grebinoski SJ, D'Cruz LM, Kane LP. PIK3IP1/TrIP restricts activation of T cells through inhibition of PI3K/Akt. J Exp Med 2018; 215:3165-3179. [PMID: 30429249 PMCID: PMC6279406 DOI: 10.1084/jem.20172018] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 06/27/2018] [Accepted: 10/19/2018] [Indexed: 12/16/2022] Open
Abstract
This study demonstrates a role for the transmembrane regulator of PI3K (TrIP) in restricting early T cell activation, at least in part through effects on PI3K. It is also shown that levels of TrIP decrease preceding full T cell activation. Phosphatidylinositol-3 kinases (PI3Ks) modulate cellular growth, proliferation, and survival; dysregulation of the PI3K pathway can lead to autoimmune disease and cancer. PIK3IP1 (or transmembrane inhibitor of PI3K [TrIP]) is a putative transmembrane regulator of PI3K. TrIP contains an extracellular kringle domain and an intracellular domain with homology to the inter-SH2 domain of the PI3K regulatory subunit p85, but the mechanism of TrIP function is poorly understood. We show that both the kringle and p85-like domains are necessary for TrIP inhibition of PI3K and that TrIP is down-modulated from the surface of T cells during T cell activation. In addition, we present evidence that the kringle domain may modulate TrIP function by mediating oligomerization. Using an inducible knockout mouse model, we show that TrIP-deficient T cells exhibit more robust activation and can mediate clearance of Listeria monocytogenes infection faster than WT mice. Thus, TrIP is a negative regulator of T cell activation and may represent a novel target for immune modulation.
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Affiliation(s)
- Uzodinma U Uche
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA.,Interdisciplinary Biomedical Graduate Program, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Ann R Piccirillo
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | | | - Stephanie J Grebinoski
- Graduate Program in Microbiology and Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Louise M D'Cruz
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Lawrence P Kane
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
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34
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Redaelli S, Ceccon M, Zappa M, Sharma GG, Mastini C, Mauri M, Nigoghossian M, Massimino L, Cordani N, Farina F, Piazza R, Gambacorti-Passerini C, Mologni L. Lorlatinib Treatment Elicits Multiple On- and Off-Target Mechanisms of Resistance in ALK-Driven Cancer. Cancer Res 2018; 78:6866-6880. [PMID: 30322862 DOI: 10.1158/0008-5472.can-18-1867] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Revised: 09/18/2018] [Accepted: 10/10/2018] [Indexed: 11/16/2022]
Abstract
: Targeted therapy changed the standard of care in ALK-dependent tumors. However, resistance remains a major challenge. Lorlatinib is a third-generation ALK inhibitor that inhibits most ALK mutants resistant to current ALK inhibitors. In this study, we utilize lorlatinib-resistant anaplastic large cell lymphoma (ALCL), non-small cell lung cancer (NSCLC), and neuroblastoma cell lines in vitro and in vivo to investigate the acquisition of resistance and its underlying mechanisms. ALCL cells acquired compound ALK mutations G1202R/G1269A and C1156F/L1198F in vitro at high drug concentrations. ALCL xenografts selected in vivo showed recurrent N1178H (5/10 mice) and G1269A (4/10 mice) mutations. Interestingly, intracellular localization of NPM/ALKN1178H skewed toward the cytoplasm in human cells, possibly mimicking overexpression. RNA sequencing of resistant cells showed significant alteration of PI3K/AKT and RAS/MAPK pathways. Functional validation by small-molecule inhibitors confirmed the involvement of these pathways in resistance to lorlatinib. NSCLC cells exposed in vitro to lorlatinib acquired hyperactivation of EGFR, which was blocked by erlotinib to restore sensitivity to lorlatinib. In neuroblastoma, whole-exome sequencing and proteomic profiling of lorlatinib-resistant cells revealed a truncating NF1 mutation and hyperactivation of EGFR and ErbB4. These data provide an extensive characterization of resistance mechanisms that may arise in different ALK-positive cancers following lorlatinib treatment. SIGNIFICANCE: High-throughput genomic, transcriptomic, and proteomic profiling reveals various mechanisms by which multiple tumor types acquire resistance to the third-generation ALK inhibitor lorlatinib.
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Affiliation(s)
- Sara Redaelli
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Monica Ceccon
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Marina Zappa
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Geeta G Sharma
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.,European Research Initiative for ALK-Related Malignancies (ERIA), Cambridge, United Kingdom
| | - Cristina Mastini
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Mario Mauri
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Marion Nigoghossian
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.,University Claude Bernard Lyon 1, Villeurbanne, France
| | - Luca Massimino
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy
| | - Nicoletta Cordani
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.,Hematology and Clinical Research Unit, San Gerardo Hospital, Monza, Italy
| | - Francesca Farina
- Hematology and Clinical Research Unit, San Gerardo Hospital, Monza, Italy
| | - Rocco Piazza
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.,Hematology and Clinical Research Unit, San Gerardo Hospital, Monza, Italy
| | - Carlo Gambacorti-Passerini
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy.,European Research Initiative for ALK-Related Malignancies (ERIA), Cambridge, United Kingdom.,Hematology and Clinical Research Unit, San Gerardo Hospital, Monza, Italy
| | - Luca Mologni
- School of Medicine and Surgery, University of Milano-Bicocca, Monza, Italy. .,European Research Initiative for ALK-Related Malignancies (ERIA), Cambridge, United Kingdom
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35
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Leisching GR. Susceptibility to Tuberculosis Is Associated With PI3K-Dependent Increased Mobilization of Neutrophils. Front Immunol 2018; 9:1669. [PMID: 30065729 PMCID: PMC6056613 DOI: 10.3389/fimmu.2018.01669] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 07/04/2018] [Indexed: 12/19/2022] Open
Abstract
Neutrophilia is a condition commonly observed in patients with late-stage tuberculosis, but evidence suggests that increased neutrophil influx begins early after infection in susceptible hosts and functions to promote a nutrient-replete niche that promotes Mycobacterium tuberculosis survival and persistence. As the disease progresses, an increase in the number of neutrophil-like cells is observed, all of which exhibit characteristics associated with (i) phenotypic and biochemical features of immaturity, (ii) the inability to activate T-cells, (iii) hyper-inflammation, and (iv) prolonged survival. Transcriptomics reveal a common set of molecules associated with the PI3–Kinase pathway that are dysregulated in patients with active tuberculosis. Closer inspection of their individual biological roles reveal their ability to modulate the IL-17/G–CSF axis, induce leukocyte receptor activation, and regulate apoptosis and motility. This review draws attention to neutrophil hyper-reactivity as a driving force for both the establishment and progression of tuberculosis disease in susceptible individuals.
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Affiliation(s)
- Gina R Leisching
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa
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36
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Caumanns JJ, Wisman GBA, Berns K, van der Zee AGJ, de Jong S. ARID1A mutant ovarian clear cell carcinoma: A clear target for synthetic lethal strategies. Biochim Biophys Acta Rev Cancer 2018; 1870:176-184. [PMID: 30025943 DOI: 10.1016/j.bbcan.2018.07.005] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 07/12/2018] [Accepted: 07/13/2018] [Indexed: 12/20/2022]
Abstract
SWI/SNF chromatin remodeling complexes play an important role in the epigenetic regulation of chromatin structure and gene transcription. Mutual exclusive subunits in the SWI/SNF complex include the DNA targeting members ARID1A and ARID1B as well as the ATPases SMARCA2 and SMARCA4. SWI/SNF complexes are mutated across many cancer types. The highest mutation incidence is found in ARID1A, primarily consisting of deleterious mutations. Current advances have reported synthetic lethal interactions with the loss of ARID1A in several cancer types. In this review, we discuss targets that are only important for tumor growth in an ARID1A mutant context. We focus on synthetic lethal strategies with ARID1A loss in ovarian clear cell carcinoma, a cancer with the highest ARID1A mutation incidence (46-57%). ARID1A directed lethal strategies that can be exploited clinically include targeting of the DNA repair proteins PARP and ATR, and the epigenetic factors EZH2, HDAC2, HDAC6 and BRD2.
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Affiliation(s)
- Joseph J Caumanns
- Department of Gynecologic Oncology, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - G Bea A Wisman
- Department of Gynecologic Oncology, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Katrien Berns
- Division of Molecular Carcinogenesis, The Netherlands Cancer Institute, Plesmanlaan 121, 1066 CX Amsterdam, The Netherlands
| | - Ate G J van der Zee
- Department of Gynecologic Oncology, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Steven de Jong
- Department of Medical Oncology, Cancer Research Centre Groningen, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands.
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37
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Castro W, Chelbi ST, Niogret C, Ramon-Barros C, Welten SPM, Osterheld K, Wang H, Rota G, Morgado L, Vivier E, Raeber ME, Boyman O, Delorenzi M, Barras D, Ho PC, Oxenius A, Guarda G. The transcription factor Rfx7 limits metabolism of NK cells and promotes their maintenance and immunity. Nat Immunol 2018; 19:809-820. [PMID: 29967452 DOI: 10.1038/s41590-018-0144-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Accepted: 04/20/2018] [Indexed: 02/06/2023]
Abstract
Regulatory factor X 7 (Rfx7) is an uncharacterized transcription factor belonging to a family involved in ciliogenesis and immunity. Here, we found that deletion of Rfx7 leads to a decrease in natural killer (NK) cell maintenance and immunity in vivo. Genomic approaches showed that Rfx7 coordinated a transcriptional network controlling cell metabolism. Rfx7-/- NK lymphocytes presented increased size, granularity, proliferation, and energetic state, whereas genetic reduction of mTOR activity mitigated those defects. Notably, Rfx7-deficient NK lymphocytes were rescued by interleukin 15 through engagement of the Janus kinase (Jak) pathway, thus revealing the importance of this signaling for maintenance of such spontaneously activated NK cells. Rfx7 therefore emerges as a novel transcriptional regulator of NK cell homeostasis and metabolic quiescence.
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Affiliation(s)
- Wilson Castro
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Sonia T Chelbi
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland.,Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Charlène Niogret
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | | | | | - Kevin Osterheld
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Haiping Wang
- Ludwig Center for Cancer Research of the University of Lausanne, Epalinges, Switzerland.,Department of Fundamental Oncology, University of Lausanne, Epalinges, Switzerland
| | - Giorgia Rota
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Leonor Morgado
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland
| | - Eric Vivier
- Centre d'Immunologie de Marseille-Luminy, Aix Marseille Université, Inserm, CNRS, Marseille, France.,Service d'Immunologie, Hôpital de la Timone, Assistance Publique-Hôpitaux de Marseille, Marseille, France.,Innate Pharma Research Labs., Innate Pharma, Marseille, France
| | - Miro E Raeber
- Department of Immunology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Onur Boyman
- Department of Immunology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Mauro Delorenzi
- Ludwig Center for Cancer Research of the University of Lausanne, Epalinges, Switzerland.,Department of Fundamental Oncology, University of Lausanne, Epalinges, Switzerland.,Swiss Institute of Bioinformatics (SIB), Lausanne, Switzerland
| | - David Barras
- Swiss Institute of Bioinformatics (SIB), Lausanne, Switzerland
| | - Ping-Chih Ho
- Ludwig Center for Cancer Research of the University of Lausanne, Epalinges, Switzerland.,Department of Fundamental Oncology, University of Lausanne, Epalinges, Switzerland
| | | | - Greta Guarda
- Department of Biochemistry, University of Lausanne, Epalinges, Switzerland. .,Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland.
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Cai Q, Fan Q, Buechlein A, Miller D, Nephew KP, Liu S, Wan J, Xu Y. Changes in mRNA/protein expression and signaling pathways in in vivo passaged mouse ovarian cancer cells. PLoS One 2018; 13:e0197404. [PMID: 29927933 PMCID: PMC6013233 DOI: 10.1371/journal.pone.0197404] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 05/01/2018] [Indexed: 01/03/2023] Open
Abstract
The cure rate for late stage epithelial ovarian cancer (EOC) has not significantly improved over several decades. New and more effective targets and treatment modalities are urgently needed. RNA-seq analyses of a syngeneic EOC cell pair, representing more and less aggressive tumor cells in vivo were conducted. Bioinformatics analyses of the RNA-seq data and biological signaling and function studies have identified new targets, such as ZIP4 in EOC. Many up-regulated tumor promoting signaling pathways have been identified which are mainly grouped into three cellular activities: 1) cell proliferation and apoptosis resistance; 2) cell skeleton and adhesion changes; and 3) carbohydrate metabolic reprograming. Unexpectedly, lipid metabolism has been the major down-regulated signaling pathway in the more aggressive EOC cells. In addition, we found that hypoxic responsive genes were at the center stage of regulation and detected functional changes were related to cancer stem cell-like activities. Moreover, our genetic, cellular, biochemical, and lipidomic analyses indicated that cells grown in 2D vs. 3D, or attached vs. suspended had dramatic changes. The important clinical implications of peritoneal cavity floating tumor cells are supported by the data proved in this work. Overall, the RNA-seq data provide a landscape of gene expression alterations during tumor progression.
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Affiliation(s)
- Qingchun Cai
- Department of Obstetrics and Gynecology, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Qipeng Fan
- Department of Obstetrics and Gynecology, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Aaron Buechlein
- Medical Sciences, Indiana University School of Medicine, Bloomington, Indiana, United States of America
| | - David Miller
- Medical Sciences, Indiana University School of Medicine, Bloomington, Indiana, United States of America
| | - Kenneth P. Nephew
- Medical Sciences, Indiana University School of Medicine, Bloomington, Indiana, United States of America
| | - Sheng Liu
- Collaborative Core for Cancer Bioinformatics (C3B), Indiana University Simon Cancer Center, Indianapolis, Indiana, United States of America
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Jun Wan
- Collaborative Core for Cancer Bioinformatics (C3B), Indiana University Simon Cancer Center, Indianapolis, Indiana, United States of America
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
| | - Yan Xu
- Department of Obstetrics and Gynecology, Indiana University School of Medicine, Indianapolis, Indiana, United States of America
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Khaled ML, Bykhovskaya Y, Yablonski SER, Li H, Drewry MD, Aboobakar IF, Estes A, Gao XR, Stamer WD, Xu H, Allingham RR, Hauser MA, Rabinowitz YS, Liu Y. Differential Expression of Coding and Long Noncoding RNAs in Keratoconus-Affected Corneas. Invest Ophthalmol Vis Sci 2018; 59:2717-2728. [PMID: 29860458 PMCID: PMC5984031 DOI: 10.1167/iovs.18-24267] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 04/23/2018] [Indexed: 12/22/2022] Open
Abstract
Purpose Keratoconus (KC) is the most common corneal ectasia. We aimed to determine the differential expression of coding and long noncoding RNAs (lncRNAs) in human corneas affected with KC. Methods From the corneas of 10 KC patients and 8 non-KC healthy controls, 200 ng total RNA was used to prepare sequencing libraries with the SMARTer Stranded RNA-Seq kit after ribosomal RNA depletion, followed by paired-end 50-bp sequencing with Illumina Sequencer. Differential analysis was done using TopHat/Cufflinks with a gene file from Ensembl and a lncRNA file from NONCODE. Pathway analysis was performed using WebGestalt. Using the expression level of differentially expressed coding and noncoding RNAs in each sample, we correlated their expression levels in KC and controls separately and identified significantly different correlations in KC against controls followed by visualization using Cytoscape. Results Using |fold change| ≥ 2 and a false discovery rate ≤ 0.05, we identified 436 coding RNAs and 584 lncRNAs with differential expression in the KC-affected corneas. Pathway analysis indicated the enrichment of genes involved in extracellular matrix, protein binding, glycosaminoglycan binding, and cell migration. Our correlation analysis identified 296 pairs of significant KC-specific correlations containing 117 coding genes enriched in functions related to cell migration/motility, extracellular space, cytokine response, and cell adhesion. Our study highlighted the potential roles of several genes (CTGF, SFRP1, AQP5, lnc-WNT4-2:1, and lnc-ALDH3A2-2:1) and pathways (TGF-β, WNT signaling, and PI3K/AKT pathways) in KC pathogenesis. Conclusions Our RNA-Seq-based differential expression and correlation analyses have identified many potential KC contributing coding and noncoding RNAs.
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Affiliation(s)
- Mariam Lofty Khaled
- Department of Cellular Biology and Anatomy, Augusta University, Augusta, Georgia, United States
| | - Yelena Bykhovskaya
- Regenerative Medicine Institute and Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California, United States
| | - Sarah E. R. Yablonski
- Department of Cellular Biology and Anatomy, Augusta University, Augusta, Georgia, United States
- STAR Program, Augusta University, Augusta, Georgia, United States
| | - Hanzhou Li
- Department of Cellular Biology and Anatomy, Augusta University, Augusta, Georgia, United States
| | - Michelle D. Drewry
- Department of Cellular Biology and Anatomy, Augusta University, Augusta, Georgia, United States
| | - Inas F. Aboobakar
- Department of Ophthalmology, Duke University Medical Center, Durham, North Carolina, United States
| | - Amy Estes
- Department of Ophthalmology, Augusta University, Augusta, Georgia, United States
| | - X. Raymond Gao
- Department of Ophthalmology and Visual Science, University of Illinois at Chicago, Chicago, Illinois, United States
| | - W. Daniel Stamer
- Department of Ophthalmology, Duke University Medical Center, Durham, North Carolina, United States
| | - Hongyan Xu
- Department of Population Health Sciences, Augusta University, Augusta, Georgia, United States
| | - R. Rand Allingham
- Department of Ophthalmology, Duke University Medical Center, Durham, North Carolina, United States
| | - Michael A. Hauser
- Department of Ophthalmology, Duke University Medical Center, Durham, North Carolina, United States
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States
| | - Yaron S. Rabinowitz
- Regenerative Medicine Institute and Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, California, United States
| | - Yutao Liu
- Department of Cellular Biology and Anatomy, Augusta University, Augusta, Georgia, United States
- James and Jean Culver Vision Discovery Institute, Medical College of Georgia, Augusta University, Augusta, Georgia, United States
- Center for Biotechnology and Genomic Medicine, Augusta University, Augusta, Georgia, United States
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40
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Dual blockade of the lipid kinase PIP4Ks and mitotic pathways leads to cancer-selective lethality. Nat Commun 2017; 8:2200. [PMID: 29259156 PMCID: PMC5736559 DOI: 10.1038/s41467-017-02287-5] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 11/17/2017] [Indexed: 12/04/2022] Open
Abstract
Achieving robust cancer-specific lethality is the ultimate clinical goal. Here, we identify a compound with dual-inhibitory properties, named a131, that selectively kills cancer cells, while protecting normal cells. Through an unbiased CETSA screen, we identify the PIP4K lipid kinases as the target of a131. Ablation of the PIP4Ks generates a phenocopy of the pharmacological effects of PIP4K inhibition by a131. Notably, PIP4Ks inhibition by a131 causes reversible growth arrest in normal cells by transcriptionally upregulating PIK3IP1, a suppressor of the PI3K/Akt/mTOR pathway. Strikingly, Ras activation overrides a131-induced PIK3IP1 upregulation and activates the PI3K/Akt/mTOR pathway. Consequently, Ras-transformed cells override a131-induced growth arrest and enter mitosis where a131’s ability to de-cluster supernumerary centrosomes in cancer cells eliminates Ras-activated cells through mitotic catastrophe. Our discovery of drugs with a dual-inhibitory mechanism provides a unique pharmacological strategy against cancer and evidence of cross-activation between the Ras/Raf/MEK/ERK and PI3K/AKT/mTOR pathways via a Ras˧PIK3IP1˧PI3K signaling network. The Ras/Raf/MEK/ERK and PI3K/Akt/mTOR signaling pathways are essential for cancer cell survival. Here, the authors describes a molecule a131 with dual-inhibitory properties, which targets PI5P4K and mitosis, and it is involved in Ras/Raf/MEK/ERK and PI3K/Akt/mTOR crosstalk, thereby causing reversible growth arrest in normal cells and cell death of tumor cells.
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Major contribution of the 3/6/7 class of TRPC channels to myocardial ischemia/reperfusion and cellular hypoxia/reoxygenation injuries. Proc Natl Acad Sci U S A 2017; 114:E4582-E4591. [PMID: 28526717 DOI: 10.1073/pnas.1621384114] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
The injury phase after myocardial infarcts occurs during reperfusion and is a consequence of calcium release from internal stores combined with calcium entry, leading to cell death by apoptopic and necrotic processes. The mechanism(s) by which calcium enters cells has(ve) not been identified. Here, we identify canonical transient receptor potential channels (TRPC) 3 and 6 as the cation channels through which most of the damaging calcium enters cells to trigger their death, and we describe mechanisms activated during the injury phase. Working in vitro with H9c2 cardiomyoblasts subjected to 9-h hypoxia followed by 6-h reoxygenation (H/R), and analyzing changes occurring in areas-at-risk (AARs) of murine hearts subjected to a 30-min ischemia followed by 24-h reperfusion (I/R) protocol, we found: (i) that blocking TRPC with SKF96365 significantly ameliorated damage induced by H/R, including development of the mitochondrial permeability transition and proapoptotic changes in Bcl2/BAX ratios; and (ii) that AAR tissues had increased TUNEL+ cells, augmented Bcl2/BAX ratios, and increased p(S240)NFATc3, p(S473)AKT, p(S9)GSK3β, and TRPC3 and -6 proteins, consistent with activation of a positive-feedback loop in which calcium entering through TRPCs activates calcineurin-mediated NFATc3-directed transcription of TRPC genes, leading to more Ca2+ entry. All these changes were markedly reduced in mice lacking TRPC3, -6, and -7. The changes caused by I/R in AAR tissues were matched by those seen after H/R in cardiomyoblasts in all aspects except for p-AKT and p-GSK3β, which were decreased after H/R in cardiomyoblasts instead of increased. TRPC should be promising targets for pharmacologic intervention after cardiac infarcts.
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42
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Jongbloed F, Saat TC, Verweij M, Payan-Gomez C, Hoeijmakers JHJ, van den Engel S, van Oostrom CT, Ambagtsheer G, Imholz S, Pennings JLA, van Steeg H, IJzermans JNM, Dollé MET, de Bruin RWF. A signature of renal stress resistance induced by short-term dietary restriction, fasting, and protein restriction. Sci Rep 2017; 7:40901. [PMID: 28102354 PMCID: PMC5244361 DOI: 10.1038/srep40901] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 12/14/2016] [Indexed: 11/09/2022] Open
Abstract
During kidney transplantation, ischemia-reperfusion injury (IRI) induces oxidative stress. Short-term preoperative 30% dietary restriction (DR) and 3-day fasting protect against renal IRI. We investigated the contribution of macronutrients to this protection on both phenotypical and transcriptional levels. Male C57BL/6 mice were fed control food ad libitum, underwent two weeks of 30%DR, 3-day fasting, or received a protein-, carbohydrate- or fat-free diet for various periods of time. After completion of each diet, renal gene expression was investigated using microarrays. After induction of renal IRI by clamping the renal pedicles, animals were monitored seven days postoperatively for signs of IRI. In addition to 3-day fasting and two weeks 30%DR, three days of a protein-free diet protected against renal IRI as well, whereas the other diets did not. Gene expression patterns significantly overlapped between all diets except the fat-free diet. Detailed meta-analysis showed involvement of nuclear receptor signaling via transcription factors, including FOXO3, HNF4A and HMGA1. In conclusion, three days of a protein-free diet is sufficient to induce protection against renal IRI similar to 3-day fasting and two weeks of 30%DR. The elucidated network of common protective pathways and transcription factors further improves our mechanistic insight into the increased stress resistance induced by short-term DR.
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Affiliation(s)
- F Jongbloed
- Department of Surgery, Laboratory for Experimental Transplantation and Intestinal Surgery (LETIS), Erasmus University Medical Center, Rotterdam, the Netherlands.,Centre for Health Protection, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - T C Saat
- Department of Surgery, Laboratory for Experimental Transplantation and Intestinal Surgery (LETIS), Erasmus University Medical Center, Rotterdam, the Netherlands
| | - M Verweij
- Department of Surgery, Laboratory for Experimental Transplantation and Intestinal Surgery (LETIS), Erasmus University Medical Center, Rotterdam, the Netherlands
| | - C Payan-Gomez
- Department of Genetics, Erasmus University Medical Center, Rotterdam, the Netherlands.,Facultad de Ciencias Naturales y Matemáticas, Universidad del Rosario, Bogotá, Colombia
| | - J H J Hoeijmakers
- Department of Genetics, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - S van den Engel
- Department of Surgery, Laboratory for Experimental Transplantation and Intestinal Surgery (LETIS), Erasmus University Medical Center, Rotterdam, the Netherlands
| | - C T van Oostrom
- Centre for Health Protection, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - G Ambagtsheer
- Department of Surgery, Laboratory for Experimental Transplantation and Intestinal Surgery (LETIS), Erasmus University Medical Center, Rotterdam, the Netherlands
| | - S Imholz
- Centre for Health Protection, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - J L A Pennings
- Centre for Health Protection, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - H van Steeg
- Centre for Health Protection, National Institute for Public Health and the Environment, Bilthoven, the Netherlands.,Department of Toxicogenetics, Leiden University Medical Center, Leiden, the Netherlands
| | - J N M IJzermans
- Department of Surgery, Laboratory for Experimental Transplantation and Intestinal Surgery (LETIS), Erasmus University Medical Center, Rotterdam, the Netherlands
| | - M E T Dollé
- Centre for Health Protection, National Institute for Public Health and the Environment, Bilthoven, the Netherlands
| | - R W F de Bruin
- Department of Surgery, Laboratory for Experimental Transplantation and Intestinal Surgery (LETIS), Erasmus University Medical Center, Rotterdam, the Netherlands
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Wei H, Geng J, Shi B, Liu Z, Wang YH, Stevens AC, Sprout SL, Yao M, Wang H, Hu H. Cutting Edge: Foxp1 Controls Naive CD8+ T Cell Quiescence by Simultaneously Repressing Key Pathways in Cellular Metabolism and Cell Cycle Progression. THE JOURNAL OF IMMUNOLOGY 2016; 196:3537-41. [PMID: 27001958 DOI: 10.4049/jimmunol.1501896] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 02/29/2016] [Indexed: 12/31/2022]
Abstract
Previously we have shown that transcription factor Foxp1 plays an essential role in maintaining naive T cell quiescence; in the absence of Foxp1, mature naive CD8(+) T cells proliferate in direct response to homeostatic cytokine IL-7. In this study, we report that the deletion of Foxp1 in naive CD8(+) T cells leads to enhanced activation of the PI3K/Akt/mammalian target of rapamycin signaling pathway and its downstream cell growth and metabolism targets in response to IL-7. We found that Foxp1 directly regulates PI3K interacting protein 1, a negative regulator of PI3K. Additionally, we found that deletion of Foxp1 in naive CD8(+) T cells results in increased expression levels of E2fs, the critical components for cell cycle progression and proliferation, in a manner that is not associated with increased phosphorylation of retinoblastoma protein. Taken together, our studies suggest that Foxp1 enforces naive CD8(+) T cell quiescence by simultaneously repressing key pathways in both cellular metabolism and cell cycle progression.
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Affiliation(s)
- Hairong Wei
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Jianlin Geng
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Bi Shi
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Zhenghui Liu
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Yin-Hu Wang
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Anna C Stevens
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Stephanie L Sprout
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
| | - Min Yao
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Haikun Wang
- Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai 200031, China
| | - Hui Hu
- Department of Microbiology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205; and
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Jiang J, Yang B, An H, Wang X, Liu Y, Cao Z, Zhai F, Wang R, Cao Y, Cheng X. Mucosal-associated invariant T cells from patients with tuberculosis exhibit impaired immune response. J Infect 2015; 72:338-52. [PMID: 26724769 DOI: 10.1016/j.jinf.2015.11.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Revised: 11/02/2015] [Accepted: 11/19/2015] [Indexed: 12/13/2022]
Abstract
OBJECTIVES To identify factors which regulate MAIT cell response to Mycobacterium tuberculosis antigens, and to investigate the role of MAIT cells in patients with active tuberculosis. METHODS Immune response of MAIT cells to M. tuberculosis antigens were compared between patients with active TB and healthy controls by flow cytometry and RNA sequencing. RESULTS IFN-γ response of MAIT cells to M. tuberculosis lysates was dramatically improved by signal 3 cytokine IL-15 (p = 0.0002). Patients with active TB exhibited highly reduced IFN-γ production in MAIT cells stimulated with M. tuberculosis lysates/IL-15 compared with healthy controls (p < 0.0001) and individuals with latent TB infection (p = 0.0008). RNA sequencing of flow-sorted MAIT cells from patients with TB and healthy controls identified numerous differentially expressed genes, and the expression of genes that encode IFN-γ, TNF-α, IL-17F, granulysin and granzyme B were all down-regulated in patients with TB. MAIT cells from patients with TB has significantly lower expression of γc receptor than those from healthy controls under condition of Mtb lysates/IL-15 stimulation (p = 0.0028). Blockade of both γc and IL-2Rβ receptors resulted in highly reduced frequency of IFN-γ-producing MAIT cells (79.4%) (p = 0.0011). CONCLUSIONS MAIT cells from patients with active TB exhibited impaired cytokine and cytotoxic response to M. tuberculosis antigens.
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Affiliation(s)
- Jing Jiang
- Key Laboratory of Tuberculosis Prevention and Treatment, and Beijing Key Laboratory of New Techniques for Tuberculosis Diagnosis and Treatment, Division of Research, Institute of Tuberculosis, 309th Hospital, Beijing, China
| | - Bingfen Yang
- Key Laboratory of Tuberculosis Prevention and Treatment, and Beijing Key Laboratory of New Techniques for Tuberculosis Diagnosis and Treatment, Division of Research, Institute of Tuberculosis, 309th Hospital, Beijing, China
| | - Hongjuan An
- Key Laboratory of Tuberculosis Prevention and Treatment, and Beijing Key Laboratory of New Techniques for Tuberculosis Diagnosis and Treatment, Division of Research, Institute of Tuberculosis, 309th Hospital, Beijing, China
| | - Xinjing Wang
- Key Laboratory of Tuberculosis Prevention and Treatment, and Beijing Key Laboratory of New Techniques for Tuberculosis Diagnosis and Treatment, Division of Research, Institute of Tuberculosis, 309th Hospital, Beijing, China
| | - Yanhua Liu
- Key Laboratory of Tuberculosis Prevention and Treatment, and Beijing Key Laboratory of New Techniques for Tuberculosis Diagnosis and Treatment, Division of Research, Institute of Tuberculosis, 309th Hospital, Beijing, China
| | - Zhihong Cao
- Key Laboratory of Tuberculosis Prevention and Treatment, and Beijing Key Laboratory of New Techniques for Tuberculosis Diagnosis and Treatment, Division of Research, Institute of Tuberculosis, 309th Hospital, Beijing, China
| | - Fei Zhai
- Key Laboratory of Tuberculosis Prevention and Treatment, and Beijing Key Laboratory of New Techniques for Tuberculosis Diagnosis and Treatment, Division of Research, Institute of Tuberculosis, 309th Hospital, Beijing, China
| | - Ruo Wang
- Key Laboratory of Tuberculosis Prevention and Treatment, and Beijing Key Laboratory of New Techniques for Tuberculosis Diagnosis and Treatment, Division of Research, Institute of Tuberculosis, 309th Hospital, Beijing, China
| | - Yan Cao
- Key Laboratory of Tuberculosis Prevention and Treatment, and Beijing Key Laboratory of New Techniques for Tuberculosis Diagnosis and Treatment, Division of Research, Institute of Tuberculosis, 309th Hospital, Beijing, China
| | - Xiaoxing Cheng
- Key Laboratory of Tuberculosis Prevention and Treatment, and Beijing Key Laboratory of New Techniques for Tuberculosis Diagnosis and Treatment, Division of Research, Institute of Tuberculosis, 309th Hospital, Beijing, China.
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Joshi S, Wei J, Bishopric NH. A cardiac myocyte-restricted Lin28/let-7 regulatory axis promotes hypoxia-mediated apoptosis by inducing the AKT signaling suppressor PIK3IP1. Biochim Biophys Acta Mol Basis Dis 2015; 1862:240-51. [PMID: 26655604 DOI: 10.1016/j.bbadis.2015.12.004] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 11/02/2015] [Accepted: 12/01/2015] [Indexed: 12/14/2022]
Abstract
RATIONALE The let-7 family of microRNAs (miRs) regulates critical cell functions, including survival signaling, differentiation, metabolic control and glucose utilization. These functions may be important during myocardial ischemia. MiR-let-7 expression is under tight temporal and spatial control through multiple redundant mechanisms that may be stage-, isoform- and tissue-specific. OBJECTIVE To determine the mechanisms and functional consequences of miR-let-7 regulation by hypoxia in the heart. METHODS AND RESULTS MiR-let-7a, -7c and -7g were downregulated in the adult mouse heart early after coronary occlusion, and in neonatal rat ventricular myocytes subjected to hypoxia. Let-7 repression did not require glucose depletion, and occurred at a post-transcriptional level. Hypoxia also induced the RNA binding protein Lin28, a negative regulator of let-7. Hypoxia ineither induced Lin28 nor repressed miR-let-7 in cardiac fibroblasts. Both changes were abrogated by treatment with the histone deacetylase inhibitor trichostatin A. Restoration of let-7g to hypoxic myocytes and to ischemia-reperfused mouse hearts in vivo via lentiviral transduction potentiated the hypoxia-induced phosphorylation and activation of Akt, and prevented hypoxia-dependent caspase activation and death. Mechanistically, phosphatidyl inositol 3-kinase interacting protein 1 (Pik3ip1), a negative regulator of PI3K, was identified as a novel target of miR-let-7 by a crosslinking technique showing that miR-let-7g specifically targets Pik3ip1 to the cardiac myocyte Argonaute complex RISC. Finally, in non-failing and failing human myocardium, we found specific inverse relationships between Lin28 and miR-let-7g, and between miR-let-7g and PIK3IP1. CONCLUSION A conserved hypoxia-responsive Lin28-miR-let-7-Pik3ip1 regulatory axis is specific to cardiac myocytes and promotes apoptosis during myocardial ischemic injury.
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Affiliation(s)
- Shaurya Joshi
- Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States; Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Jianqin Wei
- Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States
| | - Nanette H Bishopric
- Department of Medicine, University of Miami Miller School of Medicine, Miami, FL, United States; Department of Molecular and Cellular Pharmacology, University of Miami Miller School of Medicine, Miami, FL, United States; Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States.
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Elmes M, Szyszka A, Pauliat C, Clifford B, Daniel Z, Cheng Z, Wathes C, McMullen S. Maternal age effects on myometrial expression of contractile proteins, uterine gene expression, and contractile activity during labor in the rat. Physiol Rep 2015; 3:e12305. [PMID: 25876907 PMCID: PMC4425948 DOI: 10.14814/phy2.12305] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 01/21/2015] [Accepted: 01/22/2015] [Indexed: 01/09/2023] Open
Abstract
Advanced maternal age of first time pregnant mothers is associated with prolonged and dysfunctional labor and significant risk of emergency cesarean section. We investigated the influence of maternal age on myometrial contractility, expression of contractile associated proteins (CAPs), and global gene expression in the parturient uterus. Female Wistar rats either 8 (YOUNG n = 10) or 24 (OLDER n = 10) weeks old were fed laboratory chow, mated, and killed during parturition. Myometrial strips were dissected to determine contractile activity, cholesterol (CHOL) and triglycerides (TAG) content, protein expression of connexin-43 (GJA1), prostaglandin-endoperoxide synthase 2 (PTGS2), and caveolin 1 (CAV-1). Maternal plasma concentrations of prostaglandins PGE2, PGF2α, and progesterone were determined by RIA. Global gene expression in uterine samples was compared using Affymetrix Genechip Gene 2.0 ST arrays and Ingenuity Pathway analysis (IPA). Spontaneous contractility in myometrium exhibited by YOUNG rats was threefold greater than OLDER animals (P < 0.027) but maternal age had no significant effect on myometrial CAP expression, lipid profiles, or pregnancy-related hormones. OLDER myometrium increased contractile activity in response to PGF2α, phenylephrine, and carbachol, a response absent in YOUNG rats (all P < 0.002). Microarray analysis identified that maternal age affected expression of genes related to immune and inflammatory responses, lipid transport and metabolism, steroid metabolism, tissue remodeling, and smooth muscle contraction. In conclusion YOUNG laboring rat myometrium seems primed to contract maximally, whereas activity is blunted in OLDER animals and requires stimulation to meet contractile potential. Further work investigating maternal age effects on myometrial function is required with focus on lipid metabolism and inflammatory pathways.
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Affiliation(s)
- Matthew Elmes
- Division of Nutritional Sciences, University of Nottingham, Loughborough, UK
| | - Alexandra Szyszka
- Division of Nutritional Sciences, University of Nottingham, Loughborough, UK
| | - Caroline Pauliat
- Division of Nutritional Sciences, University of Nottingham, Loughborough, UK
| | - Bethan Clifford
- Division of Nutritional Sciences, University of Nottingham, Loughborough, UK
| | - Zoe Daniel
- Division of Nutritional Sciences, University of Nottingham, Loughborough, UK
| | - Zhangrui Cheng
- Royal Veterinary College, Reproduction and Development Group, Hatfield, UK
| | - Claire Wathes
- Royal Veterinary College, Reproduction and Development Group, Hatfield, UK
| | - Sarah McMullen
- Division of Nutritional Sciences, University of Nottingham, Loughborough, UK
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Song HK, Kim J, Lee JS, Nho KJ, Jeong HC, Kim J, Ahn Y, Park WJ, Kim DH. Pik3ip1 modulates cardiac hypertrophy by inhibiting PI3K pathway. PLoS One 2015; 10:e0122251. [PMID: 25826393 PMCID: PMC4380398 DOI: 10.1371/journal.pone.0122251] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 02/10/2015] [Indexed: 01/19/2023] Open
Abstract
Cardiac hypertrophy is an adaptive response to various physiological and pathological stimuli. Phosphoinositide-3 kinase (PI3K) is a highly conserved lipid kinase involved in physiological cardiac hypertrophy (PHH). PI3K interacting protein1 (Pik3ip1) shares homology with the p85 regulatory subunit of PI3K and is known to interact with the p110 catalytic subunit of PI3K, leading to attenuation of PI3K activity in liver and immune cells. However, the role of Pik3ip1 in the heart remains unknown. In the present study, the effects of Pik3ip1 on cardiac hypertrophy were examined. We found that the expression level of Pik3ip1 was markedly higher in cardiomyocytes than in fibroblasts. The interaction of Pik3ip1 with the p110a subunit of PI3K in the heart was identified by immunoprecipitation using neonatal rat cardiomyocytes (NRCM). Approximately 35% knockdown of Pik3ip1 was sufficient to induce myocardial hypertrophy. Pik3ip1 deficiency was shown to lead to activation of PI3K/protein kinase B (AKT)/ mammalian target of rapamycin (mTOR) signaling pathway, increasing protein synthesis and cell size. However, adenovirus-mediated overexpression of Pik3ip1 attenuated PI3K-mediated cardiac hypertrophy. Pik3ip1 was upregulated by PHH due to swimming training, but not by pathological cardiac hypertrophy (PAH) due to pressure-overload, suggesting that Pik3ip1 plays a compensatory negative role for PHH. Collectively, our results elucidate the mechanisms for the roles of Pik3ip1 in PI3K/AKT signaling pathway.
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Affiliation(s)
- Hong Ki Song
- School of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Jiyeon Kim
- School of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Jong Sub Lee
- School of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Kyoung Jin Nho
- School of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Hae Chang Jeong
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Jihwa Kim
- School of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Youngkeun Ahn
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Woo Jin Park
- School of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Do Han Kim
- School of Life Sciences and Systems Biology Research Center, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
- * E-mail:
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48
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Weitzdoerfer R, Toran N, Subramaniyan S, Pollak A, Dierssen M, Lubec G. A cluster of protein kinases and phosphatases modulated in fetal Down syndrome (trisomy 21) brain. Amino Acids 2015; 47:1127-34. [PMID: 25740605 DOI: 10.1007/s00726-015-1941-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 02/13/2015] [Indexed: 01/29/2023]
Abstract
Down syndrome (DS; trisomy 21) is the most frequent cause of mental retardation with major cognitive and behavioral deficits. Although a series of aberrant biochemical pathways has been reported, work on signaling proteins is limited. It was, therefore, the aim of the study to test a selection of protein kinases and phosphatases known to be essential for memory and learning mechanisms in fetal DS brain. 12 frontal cortices from DS brain were compared to 12 frontal cortices from controls obtained at legal abortions. Proteins were extracted from brains and western blotting with specific antibodies was carried out. Primary results were used for networking (IntAct Molecular Interaction Database) and individual predicted pathway components were subsequently quantified by western blotting. Levels of calcium-calmodulin kinase II alpha, transforming growth factor beta-activated kinase 1 as well as phosphatase and tensin homolog (PTEN) were reduced in cortex of DS subjects and network generation pointed to interaction between PTEN and the dendritic spine protein drebrin that was subsequently determined and reduced levels were observed. The findings of reduced levels of cognitive-function-related protein kinases and the phosphatase may be relevant for interpretation of previous work and may be useful for the design of future studies on signaling in DS brain. Moreover, decreased drebrin levels may point to dendritic spine abnormalities.
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Affiliation(s)
- Rachel Weitzdoerfer
- Department of Pediatrics, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria
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Bitler BG, Aird KM, Garipov A, Li H, Amatangelo M, Kossenkov AV, Schultz DC, Liu Q, Shih IM, Conejo-Garcia JR, Speicher DW, Zhang R. Synthetic lethality by targeting EZH2 methyltransferase activity in ARID1A-mutated cancers. Nat Med 2015; 21:231-8. [PMID: 25686104 PMCID: PMC4352133 DOI: 10.1038/nm.3799] [Citation(s) in RCA: 482] [Impact Index Per Article: 53.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2014] [Accepted: 01/05/2015] [Indexed: 12/15/2022]
Abstract
ARID1A, a chromatin remodeler, shows one of the highest mutation rates across many cancer types. Notably, ARID1A is mutated in over 50% of ovarian clear cell carcinomas, which currently has no effective therapy. To date, clinically applicable targeted cancer therapy based on ARID1A mutational status has not been described. Here we show that inhibition of the EZH2 methyltransferase acts in a synthetic lethal manner in ARID1A mutated ovarian cancer cells. ARID1A mutational status correlates with response to the EZH2 inhibitor. We identified PIK3IP1 as a direct ARID1A/EZH2 target, which is upregulated by EZH2 inhibition and contributes to the observed synthetic lethality by inhibiting PI3K/AKT signaling. Significantly, EZH2 inhibition causes regression of ARID1A mutated ovarian tumors in vivo. Together, these data demonstrate for the first time a synthetic lethality between ARID1A mutation and EZH2 inhibition. They indicate that pharmacological inhibition of EZH2 represents a novel treatment strategy for ARID1A mutated cancers.
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Affiliation(s)
- Benjamin G Bitler
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Katherine M Aird
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Azat Garipov
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Hua Li
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Michael Amatangelo
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Andrew V Kossenkov
- Center for Systems and Computational Biology, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - David C Schultz
- Center for Chemical Biology and Translational Medicine, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Qin Liu
- Molecular and Cellular Oncogenesis Program, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Ie-Ming Shih
- Department of Pathology, Oncology, and Gynecology and Obstetrics, Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Jose R Conejo-Garcia
- Tumor Microenvironment and Metastasis Program, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - David W Speicher
- 1] Center for Systems and Computational Biology, The Wistar Institute, Philadelphia, Pennsylvania, USA. [2] Molecular and Cellular Oncogenesis Program, The Wistar Institute, Philadelphia, Pennsylvania, USA
| | - Rugang Zhang
- Gene Expression and Regulation Program, The Wistar Institute, Philadelphia, Pennsylvania, USA
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50
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Yen J, White RM, Wedge DC, Van Loo P, de Ridder J, Capper A, Richardson J, Jones D, Raine K, Watson IR, Wu CJ, Cheng J, Martincorena I, Nik-Zainal S, Mudie L, Moreau Y, Marshall J, Ramakrishna M, Tarpey P, Shlien A, Whitmore I, Gamble S, Latimer C, Langdon E, Kaufman C, Dovey M, Taylor A, Menzies A, McLaren S, O'Meara S, Butler A, Teague J, Lister J, Chin L, Campbell P, Adams DJ, Zon LI, Patton EE, Stemple DL, Futreal PA. The genetic heterogeneity and mutational burden of engineered melanomas in zebrafish models. Genome Biol 2014; 14:R113. [PMID: 24148783 PMCID: PMC3983654 DOI: 10.1186/gb-2013-14-10-r113] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 10/23/2013] [Indexed: 11/30/2022] Open
Abstract
Background Melanoma is the most deadly form of skin cancer. Expression of oncogenic BRAF or NRAS, which are frequently mutated in human melanomas, promote the formation of nevi but are not sufficient for tumorigenesis. Even with germline mutated p53, these engineered melanomas present with variable onset and pathology, implicating additional somatic mutations in a multi-hit tumorigenic process. Results To decipher the genetics of these melanomas, we sequence the protein coding exons of 53 primary melanomas generated from several BRAFV600E or NRASQ61K driven transgenic zebrafish lines. We find that engineered zebrafish melanomas show an overall low mutation burden, which has a strong, inverse association with the number of initiating germline drivers. Although tumors reveal distinct mutation spectrums, they show mostly C > T transitions without UV light exposure, and enrichment of mutations in melanogenesis, p53 and MAPK signaling. Importantly, a recurrent amplification occurring with pre-configured drivers BRAFV600E and p53-/- suggests a novel path of BRAF cooperativity through the protein kinase A pathway. Conclusion This is the first analysis of a melanoma mutational landscape in the absence of UV light, where tumors manifest with remarkably low mutation burden and high heterogeneity. Genotype specific amplification of protein kinase A in cooperation with BRAF and p53 mutation suggests the involvement of melanogenesis in these tumors. This work is important for defining the spectrum of events in BRAF or NRAS driven melanoma in the absence of UV light, and for informed exploitation of models such as transgenic zebrafish to better understand mechanisms leading to human melanoma formation.
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