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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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2
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Jia Y, He P, Ma X, Lv K, Liu Y, Xu Y. PIK3IP1: structure, aberration, function, and regulation in diseases. Eur J Pharmacol 2024; 977:176753. [PMID: 38897445 DOI: 10.1016/j.ejphar.2024.176753] [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: 02/15/2024] [Revised: 06/01/2024] [Accepted: 06/16/2024] [Indexed: 06/21/2024]
Abstract
Phosphoinositide 3-kinase (PI3K) pathway, controlling diverse functions in cells, is one of the most frequently dysregulated pathways in cancer. Several negative regulators have been reported to intricately constrain the overactivation of PI3K pathway. Phosphatidylinoinosidine-3-kinase interacting protein 1 (PIK3IP1), as a unique transmembrane protein, is a newly discovered negative regulator of PI3K pathway. PIK3IP1 negatively regulates PI3K activity by directly binding to the p110 catalytic subunit of PI3K. It has been reported that PIK3IP1 is frequently low expressed in tumors and autoimmune diseases. In tumor cells and impaired cardiomyocyte, PIK3IP1 inhibits cell proliferation and survival. Consistently, the expression of PIK3IP1 is related with the condition of cancer. In addition, PIK3IP1 inhibits the inflammatory response and immune function via maintaining the quiescent state of immune cells. Thus, low expression of PIK3IP1 represents the severe condition of autoimmune diseases. PIK3IP1 is regulated by transcription factors, epigenetic factors or micro-RNAs to facilitate its normal function in different cellular contexts. This review integrates the total findings on PIK3IP1 in different disease, and summaries the structure, biological functions and regulatory mechanisms of PIK3IP1.
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Affiliation(s)
- Yingjie Jia
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Pengxing He
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Xubin Ma
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Kaili Lv
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Ying Liu
- The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Yichao Xu
- Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education, School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China; State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, Zhengzhou, 450001, China.
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3
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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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Silberstein JL, Du J, Chan KW, Frank JA, Mathews II, Kim YB, You J, Lu Q, Liu J, Philips EA, Liu P, Rao E, Fernandez D, Rodriguez GE, Kong XP, Wang J, Cochran JR. Structural insights reveal interplay between LAG-3 homodimerization, ligand binding, and function. Proc Natl Acad Sci U S A 2024; 121:e2310866121. [PMID: 38483996 PMCID: PMC10962948 DOI: 10.1073/pnas.2310866121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 01/02/2024] [Indexed: 03/19/2024] Open
Abstract
Lymphocyte activation gene-3 (LAG-3) is an inhibitory receptor expressed on activated T cells and an emerging immunotherapy target. Domain 1 (D1) of LAG-3, which has been purported to directly interact with major histocompatibility complex class II (MHCII) and fibrinogen-like protein 1 (FGL1), has been the major focus for the development of therapeutic antibodies that inhibit LAG-3 receptor-ligand interactions and restore T cell function. Here, we present a high-resolution structure of glycosylated mouse LAG-3 ectodomain, identifying that cis-homodimerization, mediated through a network of hydrophobic residues within domain 2 (D2), is critically required for LAG-3 function. Additionally, we found a previously unidentified key protein-glycan interaction in the dimer interface that affects the spatial orientation of the neighboring D1 domain. Mutation of LAG-3 D2 residues reduced dimer formation, dramatically abolished LAG-3 binding to both MHCII and FGL1 ligands, and consequentially inhibited the role of LAG-3 in suppressing T cell responses. Intriguingly, we showed that antibodies directed against D1, D2, and D3 domains are all capable of blocking LAG-3 dimer formation and MHCII and FGL-1 ligand binding, suggesting a potential allosteric model of LAG-3 function tightly regulated by dimerization. Furthermore, our work reveals unique epitopes, in addition to D1, that can be targeted for immunotherapy of cancer and other human diseases.
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Affiliation(s)
- John L. Silberstein
- Program in Immunology, Stanford University School of Medicine, Stanford, CA94305
- Department of Bioengineering, Stanford University, Stanford, CA94305
| | - Jasper Du
- Department of Pathology, New York University Grossman School of Medicine, New York, NY10016
| | - Kun-Wei Chan
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY10016
| | - Jessica A. Frank
- Department of Bioengineering, Stanford University, Stanford, CA94305
| | - Irimpan I. Mathews
- SLAC National Accelerator Laboratory, Stanford Synchrotron Radiation Lightsource, Menlo Park, CA94025
| | - Yong Bin Kim
- Department of Bioengineering, Stanford University, Stanford, CA94305
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305
| | - Jia You
- Department of Pathology, New York University Grossman School of Medicine, New York, NY10016
| | - Qiao Lu
- Department of Pathology, New York University Grossman School of Medicine, New York, NY10016
| | - Jia Liu
- Department of Pathology, New York University Grossman School of Medicine, New York, NY10016
| | - Elliot A. Philips
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY10016
| | - Phillip Liu
- Department of Bioengineering, Stanford University, Stanford, CA94305
- Program in Biophysics, Stanford University School of Medicine, Stanford, CA94305
| | - Eric Rao
- Department of Pathology, New York University Grossman School of Medicine, New York, NY10016
| | - Daniel Fernandez
- Macromolecular Structure Knowledge Center, Stanford Sarafan ChEM-H Institute, Stanford, CA94305
| | - Grayson E. Rodriguez
- Program in Immunology, Stanford University School of Medicine, Stanford, CA94305
- Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, CA94305
| | - Xiang-Peng Kong
- Department of Biochemistry and Molecular Pharmacology, New York University Grossman School of Medicine, New York, NY10016
| | - Jun Wang
- Department of Pathology, New York University Grossman School of Medicine, New York, NY10016
- The Laura and Isaac Perlmutter Cancer Center, New York University Langone Health, New York, NY10016
| | - Jennifer R. Cochran
- Program in Immunology, Stanford University School of Medicine, Stanford, CA94305
- Department of Bioengineering, Stanford University, Stanford, CA94305
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305
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6
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Wu J, Yi S, Cao Y, Zu M, Li B, Yang W, Shahbazi MA, Wan Y, Reis RL, Kundu SC, Shi X, Xiao B. Dual-driven nanomotors enable tumor penetration and hypoxia alleviation for calcium overload-photo-immunotherapy against colorectal cancer. Biomaterials 2023; 302:122332. [PMID: 37801790 DOI: 10.1016/j.biomaterials.2023.122332] [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: 05/26/2023] [Revised: 09/03/2023] [Accepted: 09/14/2023] [Indexed: 10/08/2023]
Abstract
The treatment efficacies of conventional medications against colorectal cancer (CRC) are restricted by a low penetrative, hypoxic, and immunosuppressive tumor microenvironment. To address these restrictions, we developed an innovative antitumor platform that employs calcium overload-phototherapy using mitochondrial N770-conjugated mesoporous silica nanoparticles loaded with CaO2 (CaO2-N770@MSNs). A loading level of 14.0 wt% for CaO2-N770@MSNs was measured, constituting an adequate therapeutic dosage. With the combination of oxygen generated from CaO2 and hyperthermia under near-infrared irradiation, CaO2-N770@MSNs penetrated through the dense mucus, accumulated in the colorectal tumor tissues, and inhibited tumor cell growth through endoplasmic reticulum stress and mitochondrial damage. The combination of calcium overload and phototherapy revealed high therapeutic efficacy against orthotopic colorectal tumors, alleviated the immunosuppressive microenvironment, elevated the abundance of beneficial microorganisms (e.g., Lactobacillaceae and Lachnospiraceae), and decreased harmful microorganisms (e.g., Bacteroidaceae and Muribaculaceae). Moreover, together with immune checkpoint blocker (αPD-L1), these nanoparticles showed an ability to eradicate both orthotopic and distant tumors, while potentiating systemic antitumor immunity. This treatment platform (CaO2-N770@MSNs plus αPD-L1) open a new horizon of synergistic treatment against hypoxic CRC with high killing power and safety.
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Affiliation(s)
- Jiaxue Wu
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Chongqing, 400715, China
| | - Shixiong Yi
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Chongqing, 400715, China
| | - Yingui Cao
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Chongqing, 400715, China
| | - Menghang Zu
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Chongqing, 400715, China
| | - Baoyi Li
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Chongqing, 400715, China
| | - Wenjing Yang
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Chongqing, 400715, China
| | - Mohammad-Ali Shahbazi
- Department of Biomedical Engineering, University Medical Center Groningen, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, Netherlands; W.J. Kolff Institute for Biomedical Engineering and Materials Science, University of Groningen, Antonius Deusinglaan 1, 9713 AV, Groningen, Netherlands
| | - Ying Wan
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China.
| | - Rui L Reis
- 3Bs Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Barco, 4805-017, Guimaraes, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Subhas C Kundu
- 3Bs Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Barco, 4805-017, Guimaraes, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
| | - Xiaoxiao Shi
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Chongqing, 400715, China.
| | - Bo Xiao
- State Key Laboratory of Silkworm Genome Biology, College of Sericulture, Textile, and Biomass Sciences, Southwest University, Chongqing, 400715, China.
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7
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Chen L, Cao Y, Shen Y, Li H, Ye R, Yao J. Downregulation of PIK3IP1 in retinal microglia promotes retinal pathological neovascularization via PI3K-AKT pathway activation. Sci Rep 2023; 13:12754. [PMID: 37550343 PMCID: PMC10406944 DOI: 10.1038/s41598-023-39473-z] [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: 03/30/2023] [Accepted: 07/26/2023] [Indexed: 08/09/2023] Open
Abstract
Retinal pathological neovascularization involves endothelial cells, pericytes, photoreceptor cells, ganglion cells, and glial cells, whose roles remain unclear. Using the Scissor algorithm, we found that microglia are associated with formation of fibrovascular membranes and can promote pathological neovascularization. GO and KEGG results showed that PI3K-AKT pathway activation in retinal microglia was associated with pathological neovascularization, and PIK3IP1 was associated with retinal microglia activation. Then we used PCR, Western blot and Elisa techniques to confirm that the expression of VEGFA, FGF2, HGFα and MMP9 was increased in microglia after Lipopolysaccharide (LPS) induction. We also used cell flow cytometry and OIR models to verify the role of PI3K-AKT pathway and PIK3IP1 in microglia. Targeting of PIK3IP1 regulated the activation of the PI3K-AKT pathway in microglia, microglia function activation, and pro-angiogenic effects. These findings reveal the role of M1-type microglia in pathological neovascularization and suggests that targeting the PI3K-AKT pathway in microglia may be a new strategy for treating retinal pathological neovascularization.
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Affiliation(s)
- Lushu Chen
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- The Affiliated Eye Hospital, Nanjing Medical University, 138 Han Zhong Road, Nanjing, 210029, China
| | - Yuan Cao
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- The Affiliated Eye Hospital, Nanjing Medical University, 138 Han Zhong Road, Nanjing, 210029, China
| | - Yaming Shen
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- The Affiliated Eye Hospital, Nanjing Medical University, 138 Han Zhong Road, Nanjing, 210029, China
| | - Huan Li
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- The Affiliated Eye Hospital, Nanjing Medical University, 138 Han Zhong Road, Nanjing, 210029, China
| | - Rong Ye
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- The Affiliated Eye Hospital, Nanjing Medical University, 138 Han Zhong Road, Nanjing, 210029, China
| | - Jin Yao
- The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China.
- The Affiliated Eye Hospital, Nanjing Medical University, 138 Han Zhong Road, Nanjing, 210029, China.
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8
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Fidelle M, Rauber C, Alves Costa Silva C, Tian AL, Lahmar I, de La Varende ALM, Zhao L, Thelemaque C, Lebhar I, Messaoudene M, Pizzato E, Birebent R, Mbogning Fonkou MD, Zoppi S, Reni A, Dalban C, Leduc M, Ferrere G, Durand S, Ly P, Silvin A, Mulder K, Dutertre CA, Ginhoux F, Yonekura S, Roberti MP, Tidjani-Alou M, Terrisse S, Chen J, Kepp O, Schippers A, Wagner N, Suárez-Gosálvez J, Kobold S, Fahrner JE, Richard C, Bosq J, Lordello L, Vitali G, Galleron N, Quinquis B, Le Chatelier E, Blanchard L, Girard JP, Jarry A, Gervois N, Godefroy E, Labarrière N, Koschny R, Daillère R, Besse B, Truntzer C, Ghiringhelli F, Coatnoan N, Mhanna V, Klatzmann D, Drubay D, Albiges L, Thomas AM, Segata N, Danlos FX, Marabelle A, Routy B, Derosa L, Kroemer G, Zitvogel L. A microbiota-modulated checkpoint directs immunosuppressive intestinal T cells into cancers. Science 2023; 380:eabo2296. [PMID: 37289890 DOI: 10.1126/science.abo2296] [Citation(s) in RCA: 44] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/14/2023] [Indexed: 06/10/2023]
Abstract
Antibiotics (ABX) compromise the efficacy of programmed cell death protein 1 (PD-1) blockade in cancer patients, but the mechanisms underlying their immunosuppressive effects remain unknown. By inducing the down-regulation of mucosal addressin cell adhesion molecule 1 (MAdCAM-1) in the ileum, post-ABX gut recolonization by Enterocloster species drove the emigration of enterotropic α4β7+CD4+ regulatory T 17 cells into the tumor. These deleterious ABX effects were mimicked by oral gavage of Enterocloster species, by genetic deficiency, or by antibody-mediated neutralization of MAdCAM-1 and its receptor, α4β7 integrin. By contrast, fecal microbiota transplantation or interleukin-17A neutralization prevented ABX-induced immunosuppression. In independent lung, kidney, and bladder cancer patient cohorts, low serum levels of soluble MAdCAM-1 had a negative prognostic impact. Thus, the MAdCAM-1-α4β7 axis constitutes an actionable gut immune checkpoint in cancer immunosurveillance.
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Affiliation(s)
- Marine Fidelle
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Conrad Rauber
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
- Department of Gastroenterology and Infectious Diseases, University Hospital Heidelberg, Heidelberg, Germany
| | - Carolina Alves Costa Silva
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Ai-Ling Tian
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Centre de Recherche des Cordeliers, INSERM U1138, Équipe Labellisée - Ligue Nationale contre le Cancer, Université Paris Cité, Sorbonne Université, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Imran Lahmar
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Anne-Laure Mallard de La Varende
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Liwei Zhao
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Centre de Recherche des Cordeliers, INSERM U1138, Équipe Labellisée - Ligue Nationale contre le Cancer, Université Paris Cité, Sorbonne Université, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Cassandra Thelemaque
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Isabelle Lebhar
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Meriem Messaoudene
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Quebec, Canada
| | - Eugenie Pizzato
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Roxanne Birebent
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Maxime Descartes Mbogning Fonkou
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Silvia Zoppi
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Anna Reni
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Section of Oncology, Department of Medicine, University of Verona School of Medicine and Verona University Hospital Trust, Verona, Italy
| | - Cécile Dalban
- Clinical Research Department, Centre Léon Bérard, Lyon, France
| | - Marion Leduc
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Centre de Recherche des Cordeliers, INSERM U1138, Équipe Labellisée - Ligue Nationale contre le Cancer, Université Paris Cité, Sorbonne Université, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Gladys Ferrere
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
- EverImmune, Gustave Roussy Cancer Campus, Villejuif Cedex, France
| | - Sylvère Durand
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Centre de Recherche des Cordeliers, INSERM U1138, Équipe Labellisée - Ligue Nationale contre le Cancer, Université Paris Cité, Sorbonne Université, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Pierre Ly
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
- Center of Clinical Investigations in Biotherapies of Cancer (BIOTHERIS), Villejuif, France
| | - Aymeric Silvin
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Kevin Mulder
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Charles-Antoine Dutertre
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Florent Ginhoux
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Satoru Yonekura
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Maria Paula Roberti
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
- Clinical Cooperation Unit Applied Tumor Immunity, German Cancer Research Center (DKFZ), Heidelberg, Germany
- Department of Medical Oncology, National Center for Tumor Diseases (NCT), Heidelberg University Hospital (UKHD), Heidelberg, Germany
| | - Maryam Tidjani-Alou
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Safae Terrisse
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Jianzhou Chen
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Oliver Kepp
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Centre de Recherche des Cordeliers, INSERM U1138, Équipe Labellisée - Ligue Nationale contre le Cancer, Université Paris Cité, Sorbonne Université, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Angela Schippers
- Department of Pediatrics, University Hospital RWTH Aachen, Aachen, Germany
| | - Norbert Wagner
- Department of Pediatrics, University Hospital RWTH Aachen, Aachen, Germany
| | - Javier Suárez-Gosálvez
- Center of Integrated Protein Science Munich (CIPS-M) and Division of Clinical Pharmacology, Department of Medicine IV, Klinikum der Universität München, LMU Munich, Germany
| | - Sebastian Kobold
- Center of Integrated Protein Science Munich (CIPS-M) and Division of Clinical Pharmacology, Department of Medicine IV, Klinikum der Universität München, LMU Munich, Germany
- German Cancer Consortium (DKTK), partner site Munich, Munich, Germany
| | - Jean-Eudes Fahrner
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Corentin Richard
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Quebec, Canada
| | | | - Leonardo Lordello
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
| | - Giacomo Vitali
- MetaGenoPolis, INRAe, Université Paris-Saclay, Jouy en Josas, France
| | - Nathalie Galleron
- MetaGenoPolis, INRAe, Université Paris-Saclay, Jouy en Josas, France
| | - Benoît Quinquis
- MetaGenoPolis, INRAe, Université Paris-Saclay, Jouy en Josas, France
| | | | - Lucas Blanchard
- Institut de Pharmacologie et de Biologie Structurale, IPBS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Jean-Philippe Girard
- Institut de Pharmacologie et de Biologie Structurale, IPBS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Anne Jarry
- Nantes Université, Université d'Angers, INSERM, CNRS, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302/EMR6001, Nantes, France
| | - Nadine Gervois
- Nantes Université, Université d'Angers, INSERM, CNRS, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302/EMR6001, Nantes, France
| | - Emmanuelle Godefroy
- Nantes Université, Université d'Angers, INSERM, CNRS, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302/EMR6001, Nantes, France
| | - Nathalie Labarrière
- Nantes Université, Université d'Angers, INSERM, CNRS, Immunology and New Concepts in ImmunoTherapy, INCIT, UMR 1302/EMR6001, Nantes, France
- LabEx IGO, Université de Nantes, Nantes, France
| | - Ronald Koschny
- Department of Gastroenterology and Infectious Diseases, University Hospital Heidelberg, Heidelberg, Germany
| | - Romain Daillère
- EverImmune, Gustave Roussy Cancer Campus, Villejuif Cedex, France
| | - Benjamin Besse
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
| | - Caroline Truntzer
- Université de Bourgogne Franche-Comté, Plateforme de Transfert de Biologie du Cancer, Centre Georges-François Leclerc, Equipe Labellisée Ligue Nationale Contre le Cancer, Centre de Recherche INSERM LNC-UMR1231, Institut Médical de Génétique et d'Immunologie, Dijon, France
| | - François Ghiringhelli
- Université de Bourgogne Franche-Comté, Plateforme de Transfert de Biologie du Cancer, Centre Georges-François Leclerc, Equipe Labellisée Ligue Nationale Contre le Cancer, Centre de Recherche INSERM LNC-UMR1231, Institut Médical de Génétique et d'Immunologie, Dijon, France
| | - Nicolas Coatnoan
- AP-HP, Hôpital Pitié-Salpêtrière, Clinical Investigation Center for Biotherapies (CIC-BTi) and Immunology-Inflammation-Infectiology and Dermatology Department (3iD), Paris, France
- Sorbonne Université, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
| | - Vanessa Mhanna
- AP-HP, Hôpital Pitié-Salpêtrière, Clinical Investigation Center for Biotherapies (CIC-BTi) and Immunology-Inflammation-Infectiology and Dermatology Department (3iD), Paris, France
- Sorbonne Université, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
| | - David Klatzmann
- AP-HP, Hôpital Pitié-Salpêtrière, Clinical Investigation Center for Biotherapies (CIC-BTi) and Immunology-Inflammation-Infectiology and Dermatology Department (3iD), Paris, France
- Sorbonne Université, INSERM, UMRS959 Immunology-Immunopathology-Immunotherapy Laboratory, Paris, France
| | - Damien Drubay
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Office of Biostatistics and Epidemiology, Gustave Roussy Cancer Campus, Université Paris-Saclay, Villejuif, France
- Inserm, Université Paris-Saclay, CESP U1018, Oncostat, labeled Ligue Contre le Cancer, Villejuif, France
| | - Laurence Albiges
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
| | - Andrew Maltez Thomas
- Department of Computational, Cellular and Integrative Biology, University of Trento, Trento, Italy
| | - Nicola Segata
- Department of Computational, Cellular and Integrative Biology, University of Trento, Trento, Italy
- Istituto Europeo di Oncologia (IEO), National Cancer Institute (IRCCS), Milan, Italy
| | - François-Xavier Danlos
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
- Center of Clinical Investigations in Biotherapies of Cancer (BIOTHERIS), Villejuif, France
- Drug Development Department, Gustave Roussy Cancer Campus, Villejuif Cedex, France
| | - Aurélien Marabelle
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
- Center of Clinical Investigations in Biotherapies of Cancer (BIOTHERIS), Villejuif, France
- Drug Development Department, Gustave Roussy Cancer Campus, Villejuif Cedex, France
| | - Bertrand Routy
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montréal, Quebec, Canada
- Hematology-Oncology Division, Department of Medicine, Centre Hospitalier de l'Université de Montréal (CHUM), Montréal, Quebec, Canada
| | - Lisa Derosa
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
- Center of Clinical Investigations in Biotherapies of Cancer (BIOTHERIS), Villejuif, France
| | - Guido Kroemer
- Centre de Recherche des Cordeliers, INSERM U1138, Équipe Labellisée - Ligue Nationale contre le Cancer, Université Paris Cité, Sorbonne Université, Paris, France
- Metabolomics and Cell Biology Platforms, Gustave Roussy Cancer Campus, Villejuif, France
- Institut du Cancer Paris CARPEM, Department of Biology, Hôpital Européen Georges Pompidou, Assistance Publique - Hôpitaux de Paris (AP-HP), Paris, France
| | - Laurence Zitvogel
- Gustave Roussy Cancer Campus, Villejuif Cedex, France
- Université Paris-Saclay, Faculté de Médecine, Le Kremlin-Bicêtre, France
- Institut National de la Santé Et de la Recherche Médicale (INSERM) U1015, Équipe Labellisée - Ligue Nationale contre le Cancer, Villejuif, France
- Center of Clinical Investigations in Biotherapies of Cancer (BIOTHERIS), Villejuif, France
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Łasut-Szyszka B, Rusin M. The Wheel of p53 Helps to Drive the Immune System. Int J Mol Sci 2023; 24:ijms24087645. [PMID: 37108808 PMCID: PMC10143509 DOI: 10.3390/ijms24087645] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 04/18/2023] [Accepted: 04/18/2023] [Indexed: 04/29/2023] Open
Abstract
The p53 tumor suppressor protein is best known as an inhibitor of the cell cycle and an inducer of apoptosis. Unexpectedly, these functions of p53 are not required for its tumor suppressive activity in animal models. High-throughput transcriptomic investigations as well as individual studies have demonstrated that p53 stimulates expression of many genes involved in immunity. Probably to interfere with its immunostimulatory role, many viruses code for proteins that inactivate p53. Judging by the activities of immunity-related p53-regulated genes it can be concluded that p53 is involved in detection of danger signals, inflammasome formation and activation, antigen presentation, activation of natural killer cells and other effectors of immunity, stimulation of interferon production, direct inhibition of virus replication, secretion of extracellular signaling molecules, production of antibacterial proteins, negative feedback loops in immunity-related signaling pathways, and immunologic tolerance. Many of these p53 functions have barely been studied and require further, more detailed investigations. Some of them appear to be cell-type specific. The results of transcriptomic studies have generated many new hypotheses on the mechanisms utilized by p53 to impact on the immune system. In the future, these mechanisms may be harnessed to fight cancer and infectious diseases.
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Affiliation(s)
- Barbara Łasut-Szyszka
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice Branch, 44-101 Gliwice, Poland
| | - Marek Rusin
- Center for Translational Research and Molecular Biology of Cancer, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice Branch, 44-101 Gliwice, Poland
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10
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Wang J, Zhang Y, Ma T, Wang T, Wen P, Song W, Zhang B. Screening crucial lncRNAs and genes in osteoarthritis by integrated analysis. Adv Rheumatol 2023; 63:7. [PMID: 36849988 DOI: 10.1186/s42358-023-00288-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 02/18/2023] [Indexed: 03/01/2023] Open
Abstract
BACKGROUND Osteoarthritis (OA) is one of the most frequent chronic diseases with high morbidity worldwide, marked by degradation of the cartilage and bone, joint instability, stiffness, joint space stenosis and subchondral sclerosis. Due to the elusive mechanism of osteoarthritis (OA), we aimed to identify potential markers for OA and explore the molecular mechanisms underlying OA. METHODS Expression profiles data of OA were collected from the Gene Expression Omnibus database to identify differentially expressed mRNAs (DEmRNAs) and differentially expressed lncRNAs (DElncRNAs) in OA. Functional annotation and protein-protein interaction (PPI) networks were performed. Then, nearby DEmRNAs of DElncRNAs was obtained. Moreover, GO and KEGG pathway enrichment analysis of nearby DEmRNAs of DElncRNAs was performed. Finally, expression validation of selected mRNAs and lncRNAs was performed by quantitative reverse transcriptase-polymerase chain reaction. RESULTS In total, 2080 DEmRNAs and 664 DElncRNAs were determined in OA. PI3K-Akt signaling pathway, Endocytosis and Rap1 signaling pathway were significantly enriched KEGG pathways in OA. YWHAB, HSPA8, NEDD4L and SH3KBP1 were four hub proteins in PPI network. The AC093484.4/TRPV2 interact pair may be involved in the occurrence and development of OA. CONCLUSION Our study identified several DEmRNAs and DElncRNAs associated with OA. The molecular characters could provide more information for further study on OA.
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Affiliation(s)
- Jun Wang
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, No.555, Youyi East Road Nanshaomen, Xi'an, 710054, Shaanxi, China
| | - Yumin Zhang
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, No.555, Youyi East Road Nanshaomen, Xi'an, 710054, Shaanxi, China
| | - Tao Ma
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, No.555, Youyi East Road Nanshaomen, Xi'an, 710054, Shaanxi, China
| | - Tao Wang
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, No.555, Youyi East Road Nanshaomen, Xi'an, 710054, Shaanxi, China
| | - Pengfei Wen
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, No.555, Youyi East Road Nanshaomen, Xi'an, 710054, Shaanxi, China
| | - Wei Song
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, No.555, Youyi East Road Nanshaomen, Xi'an, 710054, Shaanxi, China.
| | - Binfei Zhang
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, No.555, Youyi East Road Nanshaomen, Xi'an, 710054, Shaanxi, China.
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11
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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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12
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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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13
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Colombo F, Illescas O, Noci S, Minnai F, Pintarelli G, Pettinicchio A, Vannelli A, Sorrentino L, Battaglia L, Cosimelli M, Dragani TA, Gariboldi M. Gut microbiota composition in colorectal cancer patients is genetically regulated. Sci Rep 2022; 12:11424. [PMID: 35794137 PMCID: PMC9259655 DOI: 10.1038/s41598-022-15230-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 06/21/2022] [Indexed: 12/21/2022] Open
Abstract
AbstractThe risk of colorectal cancer (CRC) depends on environmental and genetic factors. Among environmental factors, an imbalance in the gut microbiota can increase CRC risk. Also, microbiota is influenced by host genetics. However, it is not known if germline variants influence CRC development by modulating microbiota composition. We investigated germline variants associated with the abundance of bacterial populations in the normal (non-involved) colorectal mucosa of 93 CRC patients and evaluated their possible role in disease. Using a multivariable linear regression, we assessed the association between germline variants identified by genome wide genotyping and bacteria abundances determined by 16S rRNA gene sequencing. We identified 37 germline variants associated with the abundance of the genera Bacteroides, Ruminococcus, Akkermansia, Faecalibacterium and Gemmiger and with alpha diversity. These variants are correlated with the expression of 58 genes involved in inflammatory responses, cell adhesion, apoptosis and barrier integrity. Genes and bacteria appear to be involved in the same processes. In fact, expression of the pro-inflammatory genes GAL, GSDMD and LY6H was correlated with the abundance of Bacteroides, which has pro-inflammatory properties; abundance of the anti-inflammatory genus Faecalibacterium correlated with expression of KAZN, with barrier-enhancing functions. Both the microbiota composition and local inflammation are regulated, at least partially, by the same germline variants. These variants may regulate the microenvironment in which bacteria grow and predispose to the development of cancer. Identification of these variants is the first step to identifying higher-risk individuals and proposing tailored preventive treatments that increase beneficial bacterial populations.
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14
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Zhao HC, Chen CZ, Song HQ, Wang XX, Zhang L, Zhao HL, He JF. Single-cell RNA Sequencing Analysis Reveals New Immune Disorder Complexities in Hypersplenism. Front Immunol 2022; 13:921900. [PMID: 35865544 PMCID: PMC9294158 DOI: 10.3389/fimmu.2022.921900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 05/30/2022] [Indexed: 11/13/2022] Open
Abstract
Hypersplenism (HS) is a concomitant symptom of liver or blood disease. Not only does the treatment of HS face challenges, but the transcriptome of individual cells is also unknown. Here, the transcriptional profiles of 43,037 cells from four HS tissues and one control tissue were generated by the single-cell RNA sequencing and nine major cell types, including T-cells, B-cells, NK cells, hematopoietic stem cells, neutrophil cells, mast cells, endothelial cells, erythrocytes, and dendritic cells were identified. Strikingly, the main features were the lack of CCL5+ B-cells in HS and the presence of SESN1+ B cells in HS with hepatocellular carcinoma (HS-HCC). In cell-cell interaction analysis, CD74-COPA and CD94-HLA-E in HS were found to be up-regulated. We further explored HS-specifically enriched genes (such as FKBP5, ADAR, and RPS4Y1) and found that FKBP5 was highly expressed in HCC-HS, leading to immunosuppression. Taken together, this research provides new insights into the genetic characteristics of HS via comprehensive single-cell transcriptome analysis.
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Affiliation(s)
- Hai-chao Zhao
- The Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
- Department of Hepatobiliary Surgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Chang-zhou Chen
- Department of Liver Surgery and Transplantation, Liver Cancer Institute, Zhongshan Hospital, Fudan University, Shanghai, China
- Key Laboratory of Carcinogenesis and Cancer Invasion (Fudan University), Ministry of Education, Shanghai, China
- Institute of Biomedical Sciences, Fudan University, Shanghai, China
| | - Huang-qin Song
- The Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Xiao-xiao Wang
- The Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Lei Zhang
- Department of Hepatobiliary Surgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
- Hepatic Surgery Center, Institute of Hepato-Pancreato-Biliary Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hao-liang Zhao
- The Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
- Department of Hepatobiliary Surgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
- *Correspondence: Jie-feng He, ; Hao-liang Zhao,
| | - Jie-feng He
- The Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
- Department of Hepatobiliary Surgery, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
- *Correspondence: Jie-feng He, ; Hao-liang Zhao,
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15
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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. Correction: Pik3ip1 Is a Negative Immune Regulator that Inhibits Antitumor T-Cell Immunity. Clin Cancer Res 2022; 28:2197. [PMID: 35553648 DOI: 10.1158/1078-0432.ccr-22-1109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Urine proteomics as a non-invasive approach to monitor exertional rhabdomyolysis during military training. J Proteomics 2022; 258:104498. [DOI: 10.1016/j.jprot.2022.104498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 01/21/2022] [Indexed: 11/23/2022]
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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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Jin J, Tu J, Ren J, Cai Y, Chen W, Zhang L, Zhang Q, Zhu G. Comprehensive Analysis to Identify MAGEA3 Expression Correlated With Immune Infiltrates and Lymph Node Metastasis in Gastric Cancer. Front Oncol 2022; 11:784925. [PMID: 34970496 PMCID: PMC8712941 DOI: 10.3389/fonc.2021.784925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 11/23/2021] [Indexed: 11/13/2022] Open
Abstract
Gastric cancer (GC) is an aggressive malignant tumor and causes a significant number of deaths every year. With the coming of the age of cancer immunotherapy, search for a new target in gastric cancer may benefit more advanced patients. Melanoma-associated antigen-A3 (MAGEA3), one of the members of the cancer-testis antigen (CTA) family, was considered an important part of cancer immunotherapy. We evaluate the potential role of MAGEA3 in GC through the TCGA database. The result revealed that MAGEA3 is upregulated in GC and linked to poor OS and lymph node metastasis. MAGEA3 was also correlated with immune checkpoints, TMB, and affected the tumor immune microenvironment and the prognosis of GC through CIBERSORT, TIMER, and Kaplan-Meier plotter database analysis. In addition, GSEA-identified MAGEA3 is involved in the immune regulation of GC. Moreover, the protein-protein interaction (PPI) networks of MAGEA3 were constructed through STRING database and MAGEA3-correlated miRNAs were screened based on the joint analysis of multiple databases. In terms of experimental verification, we constructed pET21a (+)/MAGEA3 restructuring plasmids and transformed to Escherichia coli Rosetta. MAGEA3 protein was used as an antigen after being expressed and purified and can effectively detect the specific IgG in 93 GC patients' serum specimens with 44.08% sensitivity and 92.54% specificity. Through further analysis, the positive rate of MAGEA3 was related to the stage and transfer number of lymph nodes. These results indicated that MAGEA3 is a novel biomarker and correlated with lymph node metastasis and immune infiltrates in GC, which could be a new target for immunotherapy.
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Affiliation(s)
- Jinji Jin
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jianxin Tu
- Department of Rheumatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jiahuan Ren
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Yiqi Cai
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wenjing Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Lifang Zhang
- Department of Medical Microbiology and Immunology, Wenzhou Medical University, Wenzhou, China
| | - Qiyu Zhang
- Department of Hepato-Bilio-Pancreatic Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Guanbao Zhu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
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19
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Wang Y, Xu L, Zhao W, Chen X, Wen L, Duan W, Yu X, De Zhou F, Liu Y, Hao J, Huang X, Lu J, Ge Q. T cell landscape and dynamics in immunoglobulin light chain amyloidosis before and after daratumumab-based therapy. Clin Transl Med 2021; 11:e582. [PMID: 34845849 PMCID: PMC8630449 DOI: 10.1002/ctm2.582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 09/05/2021] [Accepted: 09/10/2021] [Indexed: 11/07/2022] Open
Abstract
Amyloid light-chain (AL) is characterized by the presence of small, poorly proliferating plasma cell clones with the production and deposition of light chains into tissues. T cell changes within the tumour microenvironment in AL are poorly understood. By sequencing at a single-cell level of CD3+ T cells purified from bone marrow (BM) and blood of newly diagnosed AL patients before and after a combination of daratumumab with cyclophosphamide, bortezomib, and dexamethasone (Dara-BCD), we analysed the transcriptomic features of T cells and found an expansion, activation and type I cytokine upregulation in BM and circulating T cells after the treatment. More prominent changes were shown in CD8+ T cells. In particular, we found the presence of CD8+ BM resident memory T cells (TRM ) with high expression of inhibitory molecules in AL patients at diagnosis. After Dara-BCD, these TRM cells were quickly activated with downregulation of suppressive molecules and upregulation of IFNG expression. These data collectively demonstrate that Dara-based therapy in patients with AL amyloidosis promotes anti-tumour T cell responses. The similar transcriptomic features of BM and circulating T cells before and after therapy further provide a less invasive approach for molecular monitoring of T cell response in AL amyloidosis.
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Affiliation(s)
- Yujia Wang
- Department of ImmunologySchool of Basic Medical SciencesPeking University. NHC Key Laboratory of Medical Immunology (Peking University)BeijingChina
| | - Lushuang Xu
- Department of ImmunologySchool of Basic Medical SciencesPeking University. NHC Key Laboratory of Medical Immunology (Peking University)BeijingChina
| | - Weijia Zhao
- Department of ImmunologySchool of Basic Medical SciencesPeking University. NHC Key Laboratory of Medical Immunology (Peking University)BeijingChina
| | | | - Lei Wen
- Beijing Key Laboratory of Hematopoietic Stem Cell TransplantationPeking University People's Hospital & Institute of HematologyBeijingChina
| | - Wenbing Duan
- Beijing Key Laboratory of Hematopoietic Stem Cell TransplantationPeking University People's Hospital & Institute of HematologyBeijingChina
| | - Xiao‐Juan Yu
- Renal DivisionDepartment of MedicineInstitute of NephrologyPeking University First Hospital, & Renal Pathology CenterPeking UniversityBeijingChina
- Renal Pathology CenterInstitute of NephrologyPeking UniversityBeijingChina
- Key Laboratory of Renal DiseaseMinistry of Health of ChinaBeijingChina
- Key Laboratory of CKD Prevention and TreatmentMinistry of Education of ChinaBeijingChina
| | - Fu‐ De Zhou
- Renal DivisionDepartment of MedicineInstitute of NephrologyPeking University First Hospital, & Renal Pathology CenterPeking UniversityBeijingChina
- Renal Pathology CenterInstitute of NephrologyPeking UniversityBeijingChina
- Key Laboratory of Renal DiseaseMinistry of Health of ChinaBeijingChina
- Key Laboratory of CKD Prevention and TreatmentMinistry of Education of ChinaBeijingChina
| | - Yang Liu
- Beijing Key Laboratory of Hematopoietic Stem Cell TransplantationPeking University People's Hospital & Institute of HematologyBeijingChina
| | - Jie Hao
- Department of ImmunologySchool of Basic Medical SciencesPeking University. NHC Key Laboratory of Medical Immunology (Peking University)BeijingChina
| | - Xiaojun Huang
- Beijing Key Laboratory of Hematopoietic Stem Cell TransplantationPeking University People's Hospital & Institute of HematologyBeijingChina
| | - Jin Lu
- Beijing Key Laboratory of Hematopoietic Stem Cell TransplantationPeking University People's Hospital & Institute of HematologyBeijingChina
- Collaborative Innovation Center of HaematologySoochow UniversitySuzhouJiangsuChina
| | - Qing Ge
- Department of ImmunologySchool of Basic Medical SciencesPeking University. NHC Key Laboratory of Medical Immunology (Peking University)BeijingChina
- Department of Integration of Chinese and Western MedicineSchool of Basic Medical SciencesPeking UniversityBeijingChina
- National Key Laboratory of Human Factors EngineeringChina Astronauts Research and Training CenterBeijingChina
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20
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Moore A, Machiela MJ, Machado M, Wang SS, Kane E, Slager SL, Zhou W, Carrington M, Lan Q, Milne RL, Birmann BM, Adami HO, Albanes D, Arslan AA, Becker N, Benavente Y, Bisanzi S, Boffetta P, Bracci PM, Brennan P, Brooks-Wilson AR, Canzian F, Caporaso N, Clavel J, Cocco P, Conde L, Cox DG, Cozen W, Curtin K, De Vivo I, de Sanjose S, Foretova L, Gapstur SM, Ghesquières H, Giles GG, Glenn M, Glimelius B, Gao C, Habermann TM, Hjalgrim H, Jackson RD, Liebow M, Link BK, Maynadie M, McKay J, Melbye M, Miligi L, Molina TJ, Monnereau A, Nieters A, North KE, Offit K, Patel AV, Piro S, Ravichandran V, Riboli E, Salles G, Severson RK, Skibola CF, Smedby KE, Southey MC, Spinelli JJ, Staines A, Stewart C, Teras LR, Tinker LF, Travis RC, Vajdic CM, Vermeulen RCH, Vijai J, Weiderpass E, Weinstein S, Doo NW, Zhang Y, Zheng T, Chanock SJ, Rothman N, Cerhan JR, Dean M, Camp NJ, Yeager M, Berndt SI. Genome-wide homozygosity and risk of four non-Hodgkin lymphoma subtypes. JOURNAL OF TRANSLATIONAL GENETICS AND GENOMICS 2021; 5:200-217. [PMID: 34622145 PMCID: PMC8494431 DOI: 10.20517/jtgg.2021.08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
AIM Recessive genetic variation is thought to play a role in non-Hodgkin lymphoma (NHL) etiology. Runs of homozygosity (ROH), defined based on long, continuous segments of homozygous SNPs, can be used to estimate both measured and unmeasured recessive genetic variation. We sought to examine genome-wide homozygosity and NHL risk. METHODS We used data from eight genome-wide association studies of four common NHL subtypes: 3061 chronic lymphocytic leukemia (CLL), 3814 diffuse large B-cell lymphoma (DLBCL), 2784 follicular lymphoma (FL), and 808 marginal zone lymphoma (MZL) cases, as well as 9374 controls. We examined the effect of homozygous variation on risk by: (1) estimating the fraction of the autosome containing runs of homozygosity (FROH); (2) calculating an inbreeding coefficient derived from the correlation among uniting gametes (F3); and (3) examining specific autosomal regions containing ROH. For each, we calculated beta coefficients and standard errors using logistic regression and combined estimates across studies using random-effects meta-analysis. RESULTS We discovered positive associations between FROH and CLL (β = 21.1, SE = 4.41, P = 1.6 × 10-6) and FL (β = 11.4, SE = 5.82, P = 0.02) but not DLBCL (P = 1.0) or MZL (P = 0.91). For F3, we observed an association with CLL (β = 27.5, SE = 6.51, P = 2.4 × 10-5). We did not find evidence of associations with specific ROH, suggesting that the associations observed with FROH and F3 for CLL and FL risk were not driven by a single region of homozygosity. CONCLUSION Our findings support the role of recessive genetic variation in the etiology of CLL and FL; additional research is needed to identify the specific loci associated with NHL risk.
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Affiliation(s)
- Amy Moore
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
| | - Mitchell J Machiela
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
| | - Moara Machado
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
- Departamento de Biologia Geral, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, Brazil
| | - Sophia S Wang
- Division of Health Analytics, City of Hope Beckman Research Institute, Duarte, CA 91010, USA
| | - Eleanor Kane
- Department of Health Sciences, University of York, York YO10 5DD, UK
| | - Susan L Slager
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN 55905, USA
| | - Weiyin Zhou
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
- Cancer Genomics Research Laboratory, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Gaithersburg, MD 20877, USA
| | - Mary Carrington
- Basic Science Program, Frederick National Laboratory for Cancer Research in the Laboratory of Integrative Cancer Immunology, National Cancer Institute, Bethesda, MD 20892, USA
- Ragon Institute of MGH, Cambridge, MA 02139, USA
| | - Qing Lan
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
| | - Roger L Milne
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, Victoria 3004, Australia
- Centre for Epidemiology and Biostatistics, School of Population and Global Health, The University of Melbourne, Melbourne, Victoria 3010, Australia
- Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria 3800, Australia
| | - Brenda M Birmann
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Hans-Olov Adami
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm 17176, Sweden
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
- Institute of Health and Society, Clinical Effectiveness Research Group, University of Oslo, Oslo 0315, Norway
| | - Demetrius Albanes
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
| | - Alan A Arslan
- Department of Obstetrics and Gynecology, New York University School of Medicine, New York, NY 10016, USA
- Department of Population Health, New York University School of Medicine, New York, NY 10016, USA
- Perlmutter Comprehensive Cancer Center, NYU Langone Health, New York, NY 10016, USA
| | - Nikolaus Becker
- Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Baden-Württemberg 69120, Germany
| | - Yolanda Benavente
- Cancer Epidemiology Research Programme, Catalan Institute of Oncology-IDIBELL, L'Hospitalet de Llobregat, Barcelona 08908, Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Barcelona 08036, Spain
| | - Simonetta Bisanzi
- Regional Cancer Prevention Laboratory, Institute for Cancer Research, Prevention and Clinical Network (ISPRO), Florence 50139, Italy
| | - Paolo Boffetta
- Stony Brook Cancer Center, Stony Brook University, Stony Brook, NY 11794, USA
- Department of Medical and Surgical Sciences, University of Bologna, Bologna 41026, Italy
| | - Paige M Bracci
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA 94118, USA
| | - Paul Brennan
- International Agency for Research on Cancer (IARC), Lyon 69372, France
| | - Angela R Brooks-Wilson
- Genome Sciences Centre, BC Cancer Agency, Vancouver, British Columbia V5Z1L3, Canada
- Department of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, British Columbia V5A1S6, Canada
| | - Federico Canzian
- Genomic Epidemiology Group, German Cancer Research Center (DKFZ), Heidelberg 69120, Germany
| | - Neil Caporaso
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
| | - Jacqueline Clavel
- Center of Research in Epidemiology and Statistics Sorbonne Paris Cité (CRESS), UMR1153, INSERM, Villejuif 75004, France
| | - Pierluigi Cocco
- Department of Public Health, Clinical and Molecular Medicine, University of Cagliari, Monserrato, Cagliari 09042, Italy
| | - Lucia Conde
- Bill Lyons Informatics Centre, UCL Cancer Institute, University College London, London WC1E 6DD, UK
| | - David G Cox
- INSERM U1052, Cancer Research Center of Lyon, Centre Léon Bérard, Lyon 69008, France
| | - Wendy Cozen
- Department of Preventive Medicine, USC Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
- Norris Comprehensive Cancer Center, USC Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA
| | - Karen Curtin
- Department of Internal Medicine and Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, UT 84112, USA
| | - Immaculata De Vivo
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Silvia de Sanjose
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Barcelona 08036, Spain
| | - Lenka Foretova
- Department of Cancer Epidemiology and Genetics, Masaryk Memorial Cancer Institute, Brno 656 53, Czech Republic
| | - Susan M Gapstur
- Department of Population Science, American Cancer Society, Atlanta, GA 30303, USA
| | - Hervè Ghesquières
- Department of Hematology, Centre Léon Bérard, Lyon 69008, France
- INSERM U1052, Cancer Research Center of Lyon, Lyon-1 University, Pierre-Bénite Cedex 69008, France
| | - Graham G Giles
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, Victoria 3004, Australia
- Centre for Epidemiology and Biostatistics, School of Population and Global Health, The University of Melbourne, Melbourne, Victoria 3010, Australia
- Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria 3800, Australia
| | - Martha Glenn
- Department of Internal Medicine and Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, UT 84112, USA
| | - Bengt Glimelius
- Department of Immunology, Genetics and Pathology, Uppsala University, Uppsala 75105, Sweden
| | - Chi Gao
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | | | - Henrik Hjalgrim
- Department of Epidemiology Research, Division of Health Surveillance and Research, Statens Serum Institut, Copenhagen 2300, Denmark
| | - Rebecca D Jackson
- Division of Endocrinology, Diabetes and Metabolism, The Ohio State University, Columbus, OH 43210, USA
| | - Mark Liebow
- Department of Internal Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Brian K Link
- Department of Internal Medicine, Carver College of Medicine, The University of Iowa, Iowa City, IA 52242, USA
| | - Marc Maynadie
- U1231, Registre des Hémopathies Malignes de Côte d'Or, University of Burgundy and Dijon University Hospital, Dijon 21070, France
| | - James McKay
- International Agency for Research on Cancer (IARC), Lyon 69372, France
| | - Mads Melbye
- Department of Epidemiology Research, Division of Health Surveillance and Research, Statens Serum Institut, Copenhagen 2300, Denmark
- Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Lucia Miligi
- Environmental and Occupational Epidemiology Branch-Cancer Risk Factors and Lifestyle Epidemiology Unit, Institute for Cancer Research, Prevention and Clinical Network (ISPRO), Florence 50139, Italy
| | - Thierry J Molina
- Department of Pathology, AP-HP, Necker Enfants Malades, Université Paris Descartes, EA 7324, Sorbonne Paris Cité 75015, France
| | - Alain Monnereau
- Center of Research in Epidemiology and Statistics Sorbonne Paris Cité (CRESS), UMR1153, INSERM, Villejuif 75004, France
- Registre des Hémopathies Malignes de la Gironde, Institut Bergonié, Bordeaux Cedex 33076, France
| | - Alexandra Nieters
- Center for Chronic Immunodeficiency, University Medical Center Freiburg, Freiburg, Baden-Württemberg 79108, Germany
| | - Kari E North
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
- Carolina Center for Genome Sciences, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA
| | - Kenneth Offit
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Alpa V Patel
- Department of Population Science, American Cancer Society, Atlanta, GA 30303, USA
| | - Sara Piro
- Environmental and Occupational Epidemiology Branch-Cancer Risk Factors and Lifestyle Epidemiology Unit, Institute for Cancer Research, Prevention and Clinical Network (ISPRO), Florence 50139, Italy
| | - Vignesh Ravichandran
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Elio Riboli
- School of Public Health, Imperial College London, London W2 1PG, UK
| | - Gilles Salles
- INSERM U1052, Cancer Research Center of Lyon, Lyon-1 University, Pierre-Bénite Cedex 69008, France
- Department of Hematology, Hospices Civils de Lyon, Pierre Benite Cedex 69495, France
- Department of Hematology, Université Lyon-1, Pierre Benite Cedex 69495, France
| | - Richard K Severson
- Department of Family Medicine and Public Health Sciences, Wayne State University, Detroit, MI 48201, USA
| | - Christine F Skibola
- Department of Hematology and Medical Oncology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Karin E Smedby
- Department of Medicine, Solna, Karolinska Institutet, Stockholm 17176, Sweden
- Hematology Center, Karolinska University Hospital, Stockholm 17176, Sweden
| | - Melissa C Southey
- Genetic Epidemiology Laboratory, Department of Pathology, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - John J Spinelli
- Cancer Control Research, BC Cancer Agency, Vancouver, British Columbia V5Z1L3, Canada
- School of Population and Public Health, University of British Columbia, Vancouver, British Columbia V6T1Z3, Canada
| | - Anthony Staines
- School of Nursing, Psychotherapy and Community Health, Dublin City University, Dublin 9, Ireland
| | - Carolyn Stewart
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Lauren R Teras
- Department of Population Science, American Cancer Society, Atlanta, GA 30303, USA
| | - Lesley F Tinker
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA 98117, USA
| | - Ruth C Travis
- Cancer Epidemiology Unit, University of Oxford, Oxford OX3 7LF, UK
| | - Claire M Vajdic
- Centre for Big Data Research in Health, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Roel C H Vermeulen
- Institute for Risk Assessment Sciences, Utrecht University, Utrecht 3584 CG, The Netherlands
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht 3584 CX, The Netherlands
| | - Joseph Vijai
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | | | - Stephanie Weinstein
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
| | - Nicole Wong Doo
- Concord Clinical School, University of Sydney, Concord, New South Wales 2139, Australia
| | - Yawei Zhang
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT 06520, USA
| | - Tongzhang Zheng
- Department of Epidemiology, Brown University, Providence, RI 02903, USA
| | - Stephen J Chanock
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
| | - Nathaniel Rothman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
| | - James R Cerhan
- Department of Health Sciences Research, Mayo Clinic, Rochester, MN 55905, USA
| | - Michael Dean
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
| | - Nicola J Camp
- Department of Internal Medicine and Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, UT 84112, USA
| | - Meredith Yeager
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
- Cancer Genomics Research Laboratory, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Gaithersburg, MD 20877, USA
| | - Sonja I Berndt
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD 20892, USA
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21
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Samir A, Tawab RA, Eltayebi HM. Long non-coding RNAs XIST and MALAT1 hijack the PD-L1 regulatory signaling pathway in breast cancer subtypes. Oncol Lett 2021; 22:593. [PMID: 34149904 DOI: 10.3892/ol.2021.12854] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 01/14/2021] [Indexed: 02/06/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) have attracted widespread attention as potential biological and pathological regulators. lncRNAs are involved in several biological processes in cancer. Triple negative breast cancer (TNBC) is characterized by strong heterogeneity and aggressiveness. At present, the implication of microRNAs (miRs) and lncRNAs in immunotherapy has been poorly studied. Nevertheless, the blockade of immune checkpoints, particularly that of the programmed cell-death protein-1/programmed cell-death ligand-1 (PD-L1) axis, is considered as a principle approach in breast cancer (BC) therapy. The present study aimed to investigate the interaction between immune-modulatory upstream signaling pathways of the PD-L1 transcript that could enhance personalized targeted therapy. MDA-MB-231 cells were transfected with miR-182-5p mimics followed by RNA extraction and cDNA synthesis using a reverse transcription kit, and the expression levels of the target genes were assessed by reverse transcription-quantitative PCR. Furthermore, the expression levels of target genes were measured in tissues derived from 41 patients with BC, including patients with luminal BC and TNBC, as well as their adjacent lymph nodes. The results revealed that the expression levels of miR-182-5p, PD-L1 and metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) were upregulated in MDA-MB-231 cells and BC tissues. However, X-inactive specific transcript (XIST) expression was downregulated in cancer tissues and TNBC cells. Following co-transfection of cells with small interfering RNAs specific for each target gene and miR-182-5p antagomirs, the effect of miR-182-5p was abolished in the presence of lncRNAs. Therefore, the results of the present study indicated that although miR-182-5p exhibited an oncogenic effect, XIST exerted a dominant effect on the regulation of the PD-L1 signaling pathway via the inhibition of the oncogenic function of MALAT1.
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Affiliation(s)
- Amany Samir
- Molecular Pharmacology Research Group, Department of Pharmacology and Toxicology, German University in Cairo, Cairo 11835, Egypt
| | - Reda Abdel Tawab
- Department of General Surgery, Ain Shams University, Cairo 11772, Egypt
| | - Hend M Eltayebi
- Molecular Pharmacology Research Group, Department of Pharmacology and Toxicology, German University in Cairo, Cairo 11835, Egypt
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22
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Lü Z, Gong L, Ren Y, Chen Y, Wang Z, Liu L, Li H, Chen X, Li Z, Luo H, Jiang H, Zeng Y, Wang Y, Wang K, Zhang C, Jiang H, Wan W, Qin Y, Zhang J, Zhu L, Shi W, He S, Mao B, Wang W, Kong X, Li Y. Large-scale sequencing of flatfish genomes provides insights into the polyphyletic origin of their specialized body plan. Nat Genet 2021; 53:742-751. [PMID: 33875864 PMCID: PMC8110480 DOI: 10.1038/s41588-021-00836-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Accepted: 03/05/2021] [Indexed: 11/09/2022]
Abstract
The evolutionary and genetic origins of the specialized body plan of flatfish are largely unclear. We analyzed the genomes of 11 flatfish species representing 9 of the 14 Pleuronectiforme families and conclude that Pleuronectoidei and Psettodoidei do not form a monophyletic group, suggesting independent origins from different percoid ancestors. Genomic and transcriptomic data indicate that genes related to WNT and retinoic acid pathways, hampered musculature and reduced lipids might have functioned in the evolution of the specialized body plan of Pleuronectoidei. Evolution of Psettodoidei involved similar but not identical genes. Our work provides valuable resources and insights for understanding the genetic origins of the unusual body plan of flatfishes.
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Affiliation(s)
- Zhenming Lü
- National Engineering Laboratory of Marine Germplasm Resources Exploration and Utilization, Zhejiang Ocean University, Zhoushan, China
| | - Li Gong
- National Engineering Laboratory of Marine Germplasm Resources Exploration and Utilization, Zhejiang Ocean University, Zhoushan, China
| | - Yandong Ren
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Yongjiu Chen
- National Engineering Laboratory of Marine Germplasm Resources Exploration and Utilization, Zhejiang Ocean University, Zhoushan, China
| | - Zhongkai Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Liqin Liu
- National Engineering Laboratory of Marine Germplasm Resources Exploration and Utilization, Zhejiang Ocean University, Zhoushan, China
| | - Haorong Li
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Xianqing Chen
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Zhenzhu Li
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Hairong Luo
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Hui Jiang
- National Engineering Laboratory of Marine Germplasm Resources Exploration and Utilization, Zhejiang Ocean University, Zhoushan, China
| | - Yan Zeng
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Yifan Wang
- National Engineering Laboratory of Marine Germplasm Resources Exploration and Utilization, Zhejiang Ocean University, Zhoushan, China
| | - Kun Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Chen Zhang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Haifeng Jiang
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Wenting Wan
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Yanli Qin
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China
| | - Jianshe Zhang
- National Engineering Laboratory of Marine Germplasm Resources Exploration and Utilization, Zhejiang Ocean University, Zhoushan, China
| | - Liang Zhu
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Wei Shi
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Shunping He
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Bingyu Mao
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China
| | - Wen Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China.
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.
- Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, China.
| | - Xiaoyu Kong
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.
| | - Yongxin Li
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an, China.
- State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.
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23
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Garikipati VNS, Arakelyan A, Blakely EA, Chang PY, Truongcao MM, Cimini M, Malaredy V, Bajpai A, Addya S, Bisserier M, Brojakowska A, Eskandari A, Khlgatian MK, Hadri L, Fish KM, Kishore R, Goukassian DA. Long-Term Effects of Very Low Dose Particle Radiation on Gene Expression in the Heart: Degenerative Disease Risks. Cells 2021; 10:cells10020387. [PMID: 33668521 PMCID: PMC7917872 DOI: 10.3390/cells10020387] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 01/27/2021] [Accepted: 02/08/2021] [Indexed: 12/13/2022] Open
Abstract
Compared to low doses of gamma irradiation (γ-IR), high-charge-and-energy (HZE) particle IR may have different biological response thresholds in cardiac tissue at lower doses, and these effects may be IR type and dose dependent. Three- to four-month-old female CB6F1/Hsd mice were exposed once to one of four different doses of the following types of radiation: γ-IR 137Cs (40-160 cGy, 0.662 MeV), 14Si-IR (4-32 cGy, 260 MeV/n), or 22Ti-IR (3-26 cGy, 1 GeV/n). At 16 months post-exposure, animals were sacrificed and hearts were harvested and archived as part of the NASA Space Radiation Tissue Sharing Forum. These heart tissue samples were used in our study for RNA isolation and microarray hybridization. Functional annotation of twofold up/down differentially expressed genes (DEGs) and bioinformatics analyses revealed the following: (i) there were no clear lower IR thresholds for HZE- or γ-IR; (ii) there were 12 common DEGs across all 3 IR types; (iii) these 12 overlapping genes predicted various degrees of cardiovascular, pulmonary, and metabolic diseases, cancer, and aging; and (iv) these 12 genes revealed an exclusive non-linear DEG pattern in 14Si- and 22Ti-IR-exposed hearts, whereas two-thirds of γ-IR-exposed hearts revealed a linear pattern of DEGs. Thus, our study may provide experimental evidence of excess relative risk (ERR) quantification of low/very low doses of full-body space-type IR-associated degenerative disease development.
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Affiliation(s)
- Venkata Naga Srikanth Garikipati
- Department of Emergency Medicine, Dorothy M Davis Heart and Lung Research Institute, Wexner Medical School, The Ohio State University, Columbus, OH 43210, USA;
| | - Arsen Arakelyan
- Bioinformatics Group, The Institute of Molecular Biology, The National Academy of Sciences of the Republic of Armenia, Yerevan 0014, Armenia;
- PathVerse, Yerevan 0014, Armenia
| | | | | | - May M. Truongcao
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA; (M.M.T.); (M.C.); (V.M.); (A.B.); (R.K.)
| | - Maria Cimini
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA; (M.M.T.); (M.C.); (V.M.); (A.B.); (R.K.)
| | - Vandana Malaredy
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA; (M.M.T.); (M.C.); (V.M.); (A.B.); (R.K.)
| | - Anamika Bajpai
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA; (M.M.T.); (M.C.); (V.M.); (A.B.); (R.K.)
| | - Sankar Addya
- Kimmel Cancer Center, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA 19107, USA;
| | - Malik Bisserier
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.B.); (A.B.); (A.E.); (M.K.K.); (L.H.); (K.M.F.)
| | - Agnieszka Brojakowska
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.B.); (A.B.); (A.E.); (M.K.K.); (L.H.); (K.M.F.)
| | - Abrisham Eskandari
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.B.); (A.B.); (A.E.); (M.K.K.); (L.H.); (K.M.F.)
| | - Mary K. Khlgatian
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.B.); (A.B.); (A.E.); (M.K.K.); (L.H.); (K.M.F.)
| | - Lahouaria Hadri
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.B.); (A.B.); (A.E.); (M.K.K.); (L.H.); (K.M.F.)
| | - Kenneth M. Fish
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.B.); (A.B.); (A.E.); (M.K.K.); (L.H.); (K.M.F.)
| | - Raj Kishore
- Center for Translational Medicine, Lewis Katz School of Medicine, Temple University, Philadelphia, PA 19140, USA; (M.M.T.); (M.C.); (V.M.); (A.B.); (R.K.)
| | - David. A. Goukassian
- Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; (M.B.); (A.B.); (A.E.); (M.K.K.); (L.H.); (K.M.F.)
- Correspondence: ; Tel.: +1-212-824-8917
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24
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Curty G, Beckerle GA, Iñiguez LP, Furler RL, de Carvalho PS, Marston JL, Champiat S, Heymann JJ, Ormsby CE, Reyes-Terán G, Soares MA, Nixon DF, Bendall ML, Leal FE, de Mulder Rougvie M. Human Endogenous Retrovirus Expression Is Upregulated in the Breast Cancer Microenvironment of HIV Infected Women: A Pilot Study. Front Oncol 2020; 10:553983. [PMID: 33194615 PMCID: PMC7649802 DOI: 10.3389/fonc.2020.553983] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 09/17/2020] [Indexed: 12/21/2022] Open
Abstract
In people living with HIV (PLWH), chronic inflammation can lead to cancer initiation and progression, besides driving a dysregulated and diminished immune responsiveness. HIV infection also leads to increased transcription of Human Endogenous Retroviruses (HERVs), which could increase an inflammatory environment and create a tumor growth suppressive environment with high expression of pro-inflammatory cytokines. In order to determine the impact of HIV infection to HERV expression on the breast cancer microenvironment, we sequenced total RNA from formalin-fixed paraffin-embedded (FFPE) breast cancer samples of women HIV-negative and HIV-positive for transcriptome and retrotranscriptome analyses. We performed RNA extraction from FFPE samples, library preparation and total RNA sequencing (RNA-seq). The RNA-seq analysis shows 185 differentially expressed genes: 181 host genes (178 upregulated and three downregulated) and four upregulated HERV transcripts in HIV-positive samples. We also explored the impact of HERV expression in its neighboring breast cancer development genes (BRCA1, CCND1, NBS1/NBN, RAD50, KRAS, PI3K/PIK3CA) and in long non-coding RNA expression (AC060780.1, also known as RP11-242D8.1). We found a significant positive association of HERV expression with RAD50 and with AC060780.1, which suggest a possible role of HERV in regulating breast cancer genes from PLWH with breast cancer. In addition, we found immune system, extracellular matrix organization and metabolic signaling genes upregulated in HIV-positive breast cancer. In conclusion, our findings provide evidence of transcriptional and retrotranscriptional changes in breast cancer from PLWH compared to non-HIV breast cancer, including dysregulation of HERVs, suggesting an indirect effect of the virus on the breast cancer microenvironment.
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Affiliation(s)
- Gislaine Curty
- Oncovirology Program, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Greta A Beckerle
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Luis P Iñiguez
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Robert L Furler
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | | | - Jez L Marston
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Stephane Champiat
- Drug Development Department (DITEP), Gustave Roussy, Paris-Saclay University, Villejuif, France
| | - Jonas J Heymann
- Department of Pathology and Laboratory Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Christopher E Ormsby
- Center for Research in Infectious Diseases (CIENI), National Institute of Respiratory Diseases (INER), Mexico City, Mexico
| | - Gustavo Reyes-Terán
- Center for Research in Infectious Diseases (CIENI), National Institute of Respiratory Diseases (INER), Mexico City, Mexico
| | - Marcelo A Soares
- Oncovirology Program, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Douglas F Nixon
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Matthew L Bendall
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
| | - Fabio E Leal
- Oncovirology Program, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Miguel de Mulder Rougvie
- Division of Infectious Diseases, Department of Medicine, Weill Cornell Medicine, New York, NY, United States
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25
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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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26
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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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