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Zhang L, Cai E, Xu Y, Liu Z, Zheng M, Sun Z, Pei D, Wang Q. YTHDF1 facilitates esophageal cancer progression via augmenting m6A-dependent TINAGL1 translation. Cell Signal 2024; 122:111332. [PMID: 39098703 DOI: 10.1016/j.cellsig.2024.111332] [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: 05/28/2024] [Revised: 07/23/2024] [Accepted: 07/31/2024] [Indexed: 08/06/2024]
Abstract
N6-methyladenosine (m6A) is the most abundant internal RNA modification and plays a critical role in carcinogenesis and tumor progression. As a powerful m6A reader, YTHDF1 is implicated in multiple malignancies. However, the functions and underlying mechanisms of YTHDF1 in esophageal cancer (ESCA) are elusive. Here, we revealed that YTHDF1 expression was remarkably up-regulated in ESCA and linked with poor prognosis. Functionally, YTHDF1 promoted ESCA cell proliferation, migration, and metastasis in vitro and in vivo. Mechanistically, we demonstrated that TINAGL1 might be a potential target of YTHDF1. We revealed that YTHDF1 recognized and bound to m6A-modified sites of TINAGL1 mRNA, resulting in enhanced translation of TINAGL1. Furthermore, TINAGL1 knockdown partially rescued tumor-promoting effects of YTHDF1 overexpression. Therefore, we unveil that YTHDF1 facilitates ESCA progression by promoting TINAGL1 translation in an m6A-dependent manner, which offers an attractive therapeutic target for ESCA.
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Affiliation(s)
- Lin Zhang
- Department of Pathology, School of Basic Medical Sciences, Xuzhou Medical University, Xuzhou 221004, China; Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou 221004, China
| | - Enmin Cai
- Department of Pathology, School of Basic Medical Sciences, Xuzhou Medical University, Xuzhou 221004, China; Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou 221004, China
| | - Yuting Xu
- Department of Pathology, School of Basic Medical Sciences, Xuzhou Medical University, Xuzhou 221004, China
| | - Zitong Liu
- Department of Pathology, School of Basic Medical Sciences, Xuzhou Medical University, Xuzhou 221004, China; Jiangsu Province Key Laboratory of Anesthesiology, Xuzhou Medical University, Xuzhou 221004, China
| | - Maojin Zheng
- Department of Pathology, School of Basic Medical Sciences, Xuzhou Medical University, Xuzhou 221004, China
| | - Zhuo Sun
- Department of Pathology, School of Basic Medical Sciences, Xuzhou Medical University, Xuzhou 221004, China
| | - Dongsheng Pei
- Department of Pathology, School of Basic Medical Sciences, Xuzhou Medical University, Xuzhou 221004, China.
| | - Qingling Wang
- Department of Pathology, School of Basic Medical Sciences, Xuzhou Medical University, Xuzhou 221004, China.
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2
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Kim SJ, Park Y, Cho Y, Hwang H, Joo DJ, Huh KH, Lee J. Proteomics Profiling of Bilirubin Nanoparticle Treatment against Myocardial Ischemia-Reperfusion Injury. J Proteome Res 2024. [PMID: 39121348 DOI: 10.1021/acs.jproteome.4c00170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/11/2024]
Abstract
In myocardial infarction, ischemia-reperfusion injury (IRI) poses a significant challenge due to a lack of effective treatments. Bilirubin, a natural compound known for its anti-inflammatory and antioxidant properties, has been identified as a potential therapeutic agent for IRI. Currently, there are no reports about proteomic studies related to IRI and bilirubin treatment. In this study, we explored the effects of bilirubin nanoparticles in a rat model of myocardial IRI. A total of 3616 protein groups comprising 76,681 distinct peptides were identified using LC-MS/MS, where we distinguished two kinds of protein groups: those showing increased expression in IRI and decreased expression in IRI with bilirubin treatment, and vice versa, accounting for 202 and 35 proteins, respectively. Our proteomic analysis identified significant upregulation in the Wnt and insulin signaling pathways and increased Golgi markers, indicating their role in mediating bilirubin nanoparticle's protective effects. This research contributes to the proteomic understanding of myocardial IRI and suggests bilirubin nanoparticles as a promising strategy for cardiac protection, warranting further investigation in human models.
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Affiliation(s)
- Soo Jin Kim
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Yeseul Park
- Digital OMICs Research Center, Korea Basic Science Institute, Cheongju 28119, Republic of Korea
| | - Yuri Cho
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Heeyoun Hwang
- Digital OMICs Research Center, Korea Basic Science Institute, Cheongju 28119, Republic of Korea
| | - Dong Jin Joo
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Kyu Ha Huh
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Juhan Lee
- Department of Surgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
- The Research Institute for Transplantation, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
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3
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Khashei Varnamkhasti K, Moghanibashi M, Naeimi S. Implications of ZNF334 gene in lymph node metastasis of lung SCC: potential bypassing of cellular senescence. J Transl Med 2024; 22:372. [PMID: 38637790 PMCID: PMC11025273 DOI: 10.1186/s12967-024-05115-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 03/20/2024] [Indexed: 04/20/2024] Open
Abstract
BACKGROUND The primary goal of this work is to identify biomarkers associated with lung squamous cell carcinoma and assess their potential for early detection of lymph node metastasis. METHODS This study investigated gene expression in lymph node metastasis of lung squamous cell carcinoma using data from the Cancer Genome Atlas and R software. Protein-protein interaction networks, hub genes, and enriched pathways were analyzed. ZNF334 and TINAGL1, two less explored genes, were further examined through in vitro, ex vivo, and in vivo experiments to validate the findings from bioinformatics analyses. The role of ZNF334 and TINAGL1 in senescence induction was assessed after H2O2 and UV induced senescence phenotype determined using β-galactosidase activity and cell cycle status assay. RESULTS We identified a total of 611 up- and 339 down-regulated lung squamous cell carcinoma lymph node metastasis-associated genes (FDR < 0.05). Pathway enrichment analysis highlighted the central respiratory pathway within mitochondria for the subnet genes and the nuclear DNA-directed RNA polymerases for the hub genes. Significantly down regulation of ZNF334 gene was associated with malignancy lymph node progression and senescence induction has significantly altered ZNF334 expression (with consistency in bioinformatics, in vitro, ex vivo, and in vivo results). Deregulation of TINAGL1 expression with inconsistency in bioinformatics, in vitro (different types of lung squamous cancer cell lines), ex vivo, and in vivo results, was also associated with malignancy lymph node progression and altered in senescence phenotype. CONCLUSIONS ZNF334 is a highly generalizable gene to lymph node metastasis of lung squamous cell carcinoma and its expression alter certainly under senescence conditions.
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Affiliation(s)
| | - Mehdi Moghanibashi
- Department of Genetics, Faculty of Medicine, Kazerun Branch, Islamic Azad University, Kazerun, Iran.
| | - Sirous Naeimi
- Department of Genetics, Faculty of Basic Sciences, Kazerun Branch, Islamic Azad University, Kazerun, Iran
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4
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Lee D, Ham IH, Oh HJ, Lee DM, Yoon JH, Son SY, Kim TM, Kim JY, Han SU, Hur H. Tubulointerstitial nephritis antigen-like 1 from cancer-associated fibroblasts contribute to the progression of diffuse-type gastric cancers through the interaction with integrin β1. J Transl Med 2024; 22:154. [PMID: 38355577 PMCID: PMC10868052 DOI: 10.1186/s12967-024-04963-9] [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: 07/13/2023] [Accepted: 02/07/2024] [Indexed: 02/16/2024] Open
Abstract
BACKGROUND Tumor cells of diffuse-type gastric cancer (DGC) are discohesive and infiltrate into the stroma as single cells or small subgroups, so the stroma significantly impacts DGC progression. Cancer-associated fibroblasts (CAFs) are major components of the tumor stroma. Here, we identified CAF-specific secreted molecules and investigated the mechanism underlying CAF-induced DGC progression. METHODS We conducted transcriptome analysis for paired normal fibroblast (NF)-CAF isolated from DGC patient tissues and proteomics for conditioned media (CM) of fibroblasts. The effects of fibroblasts on cancer cells were examined by transwell migration and soft agar assays, western blotting, and in vivo. We confirmed the effect of blocking tubulointerstitial nephritis antigen-like 1 (TINAGL1) in CAFs using siRNA or shRNA. We evaluated the expression of TINAGL1 protein in frozen tissues of DGC and paired normal stomach and mRNA in formalin-fixed, paraffin-embedded (FFPE) tissue using RNA in-situ hybridization (RNA-ISH). RESULTS CAFs more highly expressed TINAGL1 than NFs. The co-culture of CAFs increased migration and tumorigenesis of DGC. Moreover, CAFs enhanced the phosphorylation of focal adhesion kinase (FAK) and mesenchymal marker expression in DGC cells. In an animal study, DGC tumors co-injected with CAFs showed aggressive phenotypes, including lymph node metastasis. However, increased phosphorylation of FAK and migration were reduced by blocking TINAGL1 in CAFs. In the tissues of DGC patients, TINAGL1 was higher in cancer than paired normal tissues and detected with collagen type I alpha 1 chain (COL1A1) in the same spot. Furthermore, high TINAGL1 expression was significantly correlated with poor prognosis in several public databases and our patient cohort diagnosed with DGC. CONCLUSIONS These results indicate that TINAGL1 secreted by CAFs induces phosphorylation of FAK in DGC cells and promotes tumor progression. Thus, targeting TINAGL1 in CAFs can be a novel therapeutic strategy for DGC.
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Affiliation(s)
- Dagyeong Lee
- Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
- Cancer Biology Graduate Program, Ajou University School of Medicine Suwon, Suwon, Republic of Korea
- AI-Super Convergence KIURI Translational Research Center, Ajou University School of Medicine, Suwon, Republic of Korea
| | - In-Hye Ham
- Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
- Inflamm-Aging Translational Research Center, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Hye Jeong Oh
- Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Dong Min Lee
- Inflamm-Aging Translational Research Center, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Jung Hwan Yoon
- Department of Pathology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Functional RNomics Research Center, College of Medicine, The Catholic University of Korea Seoul, Seoul, Republic of Korea
| | - Sang-Yong Son
- Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Tae-Min Kim
- Department of Medical Informatics, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Biomedicine and Health Science, Graduate School, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jae-Young Kim
- Graduate School of Analytical Science and Technology (GRAST), Chungnam National University, Daejeon, Republic of Korea
| | - Sang-Uk Han
- Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Hoon Hur
- Department of Surgery, Ajou University School of Medicine, Suwon, Republic of Korea.
- Cancer Biology Graduate Program, Ajou University School of Medicine Suwon, Suwon, Republic of Korea.
- Inflamm-Aging Translational Research Center, Ajou University School of Medicine, Suwon, Republic of Korea.
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Teng Y, Xie R, Xu J, Wang P, Chen W, Shan Z, Yan Z, Mao F, Cheng P, Peng L, Zhang J, Tian W, Yang S, Zhao Y, Chen W, Zou Q, Zhuang Y. Tubulointerstitial nephritis antigen-like 1 is a novel matricellular protein that promotes gastric bacterial colonization and gastritis in the setting of Helicobacter pylori infection. Cell Mol Immunol 2023; 20:924-940. [PMID: 37336990 PMCID: PMC10387474 DOI: 10.1038/s41423-023-01055-4] [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: 02/02/2023] [Accepted: 05/29/2023] [Indexed: 06/21/2023] Open
Abstract
The interaction between the gastric epithelium and immune cells plays key roles in H. pylori-associated pathology. Here, we demonstrate a procolonization and proinflammatory role of tubulointerstitial nephritis antigen-like 1 (TINAGL1), a newly discovered matricellular protein, in H. pylori infection. Increased TINAGL1 production by gastric epithelial cells (GECs) in the infected gastric mucosa was synergistically induced by H. pylori and IL-1β via the ERK-SP1 pathway in a cagA-dependent manner. Elevated human gastric TINAGL1 correlated with H. pylori colonization and the severity of gastritis, and mouse TINAGL1 derived from non-bone marrow-derived cells promoted bacterial colonization and inflammation. Importantly, H. pylori colonization and inflammation were attenuated in Tinagl1-/- and Tinagl1ΔGEC mice and were increased in mice injected with mouse TINAGL1. Mechanistically, TINAGL1 suppressed CCL21 expression and promoted CCL2 production in GECs by directly binding to integrin α5β1 to inhibit ERK and activate the NF-κB pathway, respectively, which not only led to decreased gastric influx of moDCs via CCL21-CCR7-dependent migration and, as a direct consequence, reduced the bacterial clearance capacity of the H. pylori-specific Th1 response, thereby promoting H. pylori colonization, but also resulted in increased gastric influx of Ly6Chigh monocytes via CCL2-CCR2-dependent migration. In turn, TINAGL1 induced the production of the proinflammatory protein S100A11 by Ly6Chigh monocytes, promoting H. pylori-associated gastritis. In summary, we identified a model in which TINAGL1 collectively ensures H. pylori persistence and promotes gastritis.
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Affiliation(s)
- Yongsheng Teng
- Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
- The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, China
| | - Rui Xie
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, Guizhou, China
| | - Jingyu Xu
- The Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine of Zunyi Medical University, Zunyi, Guizhou, China
| | - Pan Wang
- Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
- The 940th Hospital of Joint Logistics Support Force of PLA, Lanzhou, China
| | - Wanyan Chen
- Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Zhiguo Shan
- Department of General Surgery and Center of Minimal Invasive Gastrointestinal Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Zongbao Yan
- Department of General Surgery and Center of Minimal Invasive Gastrointestinal Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Fangyuan Mao
- Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Ping Cheng
- Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Liusheng Peng
- Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Jinyu Zhang
- Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Wenqing Tian
- Department of Gastroenterology, Chongqing University Cancer Hospital, Chongqing, China
| | - Shiming Yang
- Department of Gastroenterology, XinQiao Hospital, Third Military Medical University, Chongqing, China
| | - Yongliang Zhao
- Department of General Surgery and Center of Minimal Invasive Gastrointestinal Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Weisan Chen
- La Trobe Institute of Molecular Science, La Trobe University, Bundoora, VIC, Australia
| | - Quanming Zou
- Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China.
| | - Yuan Zhuang
- Department of Gastroenterology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China.
- National Engineering Research Center of Immunological Products, Third Military Medical University, Chongqing, China.
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Yang HH, Wang X, Li S, Liu Y, Akbar R, Fan GC. Lipocalin family proteins and their diverse roles in cardiovascular disease. Pharmacol Ther 2023; 244:108385. [PMID: 36966973 PMCID: PMC10079643 DOI: 10.1016/j.pharmthera.2023.108385] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 03/01/2023] [Accepted: 03/13/2023] [Indexed: 04/03/2023]
Abstract
The lipocalin (LCN) family members, a group of small extracellular proteins with 160-180 amino acids in length, can be detected in all kingdoms of life from bacteria to human beings. They are characterized by low similarity of amino acid sequence but highly conserved tertiary structures with an eight-stranded antiparallel β-barrel which forms a cup-shaped ligand binding pocket. In addition to bind small hydrophobic ligands (i.e., fatty acids, odorants, retinoids, and steroids) and transport them to specific cells, lipocalins (LCNs) can interact with specific cell membrane receptors to activate their downstream signaling pathways, and with soluble macromolecules to form the complex. Consequently, LCNs exhibit great functional diversity. Accumulating evidence has demonstrated that LCN family proteins exert multiple layers of function in the regulation of many physiological processes and human diseases (i.e., cancers, immune disorders, metabolic disease, neurological/psychiatric disorders, and cardiovascular disease). In this review, we firstly introduce the structural and sequence properties of LCNs. Next, six LCNs including apolipoprotein D (ApoD), ApoM, lipocalin 2 (LCN2), LCN10, retinol-binding protein 4 (RBP4), and Lipocalin-type prostaglandin D synthase (L-PGDS) which have been characterized so far are highlighted for their diagnostic/prognostic values and their potential effects on coronary artery disease and myocardial infarction injury. The roles of these 6 LCNs in cardiac hypertrophy, heart failure, diabetes-induced cardiac disorder, and septic cardiomyopathy are also summarized. Finally, their therapeutic potential for cardiovascular disease is discussed in each section.
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Affiliation(s)
- Hui-Hui Yang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Xiaohong Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Siru Li
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Yueying Liu
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Rubab Akbar
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Guo-Chang Fan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA.
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Renaud L, Waldrep KM, da Silveira WA, Pilewski JM, Feghali-Bostwick CA. First Characterization of the Transcriptome of Lung Fibroblasts of SSc Patients and Healthy Donors of African Ancestry. Int J Mol Sci 2023; 24:3645. [PMID: 36835058 PMCID: PMC9966000 DOI: 10.3390/ijms24043645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/25/2023] [Accepted: 02/04/2023] [Indexed: 02/16/2023] Open
Abstract
Systemic sclerosis (SSc) is a connective tissue disorder that results in fibrosis of the skin and visceral organs. SSc-associated pulmonary fibrosis (SSc-PF) is the leading cause of death amongst SSc patients. Racial disparity is noted in SSc as African Americans (AA) have a higher frequency and severity of disease than European Americans (EA). Using RNAseq, we determined differentially expressed genes (DEGs; q < 0.1, log2FC > |0.6|) in primary pulmonary fibroblasts from SSc lungs (SScL) and normal lungs (NL) of AA and EA patients to characterize the unique transcriptomic signatures of AA-NL and AA-SScL fibroblasts using systems-level analysis. We identified 69 DEGs in "AA-NL vs. EA-NL" and 384 DEGs in "AA-SScL vs. EA-SScL" analyses, and a comparison of disease mechanisms revealed that only 7.5% of DEGs were commonly deregulated in AA and EA patients. Surprisingly, we also identified an SSc-like signature in AA-NL fibroblasts. Our data highlight differences in disease mechanisms between AA and EA SScL fibroblasts and suggest that AA-NL fibroblasts are in a "pre-fibrosis" state, poised to respond to potential fibrotic triggers. The DEGs and pathways identified in our study provide a wealth of novel targets to better understand disease mechanisms leading to racial disparity in SSc-PF and develop more effective and personalized therapies.
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Affiliation(s)
- Ludivine Renaud
- Department of Medicine, Rheumatology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Kristy M. Waldrep
- Department of Medicine, Rheumatology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Willian A. da Silveira
- Department of Biological Sciences, School of Life Sciences and Education, Staffordshire University, Stoke-on-Trent ST4 2DF, UK
| | - Joseph M. Pilewski
- Department of Medicine, Pulmonary, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Carol A. Feghali-Bostwick
- Department of Medicine, Rheumatology, Medical University of South Carolina, Charleston, SC 29425, USA
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Niu ZS, Wang WH, Niu XJ. Recent progress in molecular mechanisms of postoperative recurrence and metastasis of hepatocellular carcinoma. World J Gastroenterol 2022; 28:6433-6477. [PMID: 36569275 PMCID: PMC9782839 DOI: 10.3748/wjg.v28.i46.6433] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 10/31/2022] [Accepted: 11/21/2022] [Indexed: 12/08/2022] Open
Abstract
Hepatectomy is currently considered the most effective option for treating patients with early and intermediate hepatocellular carcinoma (HCC). Unfortunately, the postoperative prognosis of patients with HCC remains unsatisfactory, predominantly because of high postoperative metastasis and recurrence rates. Therefore, research on the molecular mechanisms of postoperative HCC metastasis and recurrence will help develop effective intervention measures to prevent or delay HCC metastasis and recurrence and to improve the long-term survival of HCC patients. Herein, we review the latest research progress on the molecular mechanisms underlying postoperative HCC metastasis and recurrence to lay a foundation for improving the understanding of HCC metastasis and recurrence and for developing more precise prevention and intervention strategies.
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Affiliation(s)
- Zhao-Shan Niu
- Laboratory of Micromorphology, School of Basic Medicine, Qingdao University, Qingdao 266071, Shandong Province, China
| | - Wen-Hong Wang
- Department of Pathology, School of Basic Medicine, Qingdao University, Qingdao 266071, Shandong Province, China
| | - Xiao-Jun Niu
- Department of Internal Medicine, Qingdao Shibei District People's Hospital, Qingdao 266033, Shandong Province, China
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9
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Kato A, Kondo N, Wanifuchi-Endo Y, Fujita T, Asano T, Hisada T, Uemoto Y, Terada M, Kato H, Komura M, Okuda K, Takahashi S, Toyama T. Low TINAGL1 expression is a marker for poor prognosis in breast cancer. J Cancer Res Clin Oncol 2022:10.1007/s00432-022-04394-3. [PMID: 36229542 DOI: 10.1007/s00432-022-04394-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 10/04/2022] [Indexed: 11/25/2022]
Abstract
PURPOSE Tubulointerstitial nephritis antigen-like 1 (TINAGL1) was reported to suppress tumor metastasis and growth in triple-negative (TN) breast cancer. We aimed to determine the associations of TINAGL1 expression with clinicopathological factors and prognosis in breast cancer patients with long-term follow-up. METHODS A total of 599 consecutive primary invasive breast cancer patients with available tissue specimens from surgery in our hospital were included in the study. TINAGL1 mRNA expression was examined in all 599 tissue specimens using a TaqMan real-time PCR system. TINAGL1 protein expression was further examined in 299 patients with available tissue specimens for immunohistochemical staining. Survival analyses were performed using the Kaplan-Meier method and Cox proportional hazards models. RESULTS The median follow-up period was 12.0 years. In the total patients, low TINAGL1 mRNA expression was associated with significantly shorter disease-free survival (DFS) and overall survival than high expression (P = 0.003 and P = 0.01, respectively). Furthermore, hormone receptor-positive/human epidermal growth factor receptor 2-negative breast cancer patients with low TINAGL1 mRNA expression had a worse prognosis. Multivariate analysis identified low TINAGL1 mRNA expression, combined with lymph node positivity, as an independent poor prognostic factor for DFS in invasive breast cancer patients (HR 1.41; 95% CI 1.02-1.96; P = 0.036). TINAGL1 mRNA expression also varied with menopausal status, with low TINAGL1 mRNA expression being positively associated with poor prognosis in premenopausal patients, but not in postmenopausal patients. CONCLUSION Our findings demonstrate that TINAGL1 may be a promising candidate biomarker and therapeutic target in breast cancer patients.
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Affiliation(s)
- Akiko Kato
- Department of Breast Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Naoto Kondo
- Department of Breast Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Yumi Wanifuchi-Endo
- Department of Breast Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Takashi Fujita
- Department of Breast Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Tomoko Asano
- Department of Breast Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Tomoka Hisada
- Department of Breast Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Yasuaki Uemoto
- Department of Breast Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Mitsuo Terada
- Department of Breast Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Hiroyuki Kato
- Department of Experimental Pathology and Tumor Biology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Masayuki Komura
- Department of Experimental Pathology and Tumor Biology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Katsuhiro Okuda
- Department of Oncology, Immunology and Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Satoru Takahashi
- Department of Experimental Pathology and Tumor Biology, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan
| | - Tatsuya Toyama
- Department of Breast Surgery, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, 467-8601, Japan.
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10
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Hsa_circ_0011292 regulates paclitaxel resistance partially through regulating CDCA4 expression by serving as a miR-3619-5p sponge in non-small cell lung cancer. Mol Cell Toxicol 2022. [DOI: 10.1007/s13273-022-00269-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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11
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Tian WQ, Chen SY, Chuan FN, Zhao WR, Zhou B. Down-regulated TINAGL1 in fibroblasts impairs wound healing in diabetes. FASEB J 2022; 36:e22235. [PMID: 35199864 DOI: 10.1096/fj.202101438rr] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 01/26/2022] [Accepted: 02/14/2022] [Indexed: 11/11/2022]
Abstract
Matricellular proteins, a group of extracellular matrix (ECM) proteins, are key regulators of skin repair and their dysregulation impairs wound healing in diabetes. Tubulointerstitial nephritis antigen like 1 (TINAGL1) is a new member of matricellular protein family, and the understanding of its functional role is still relatively limited. In the current study, we detected the expression of TINAGL1 in diabetic skin wound tissues through RT-PCR, ELISA and Western blot analysis, investigated the contribution of TINAGL1 to wound healing through cutaneous administration of recombinant TINAGL1 protein, and characterized its regulation by hyperglycemia through RNA-seq and signal pathway inhibition assay. We showed that TINAGL1 expression has dynamic change and reaching a peak on day-9 after wound during the wound healing process in wild-type (WT) mice. Interestingly, decreased TINAGL1 expression is detected in skin tissues of diabetic patients and mice after wound. Then, we found that high glucose (HG), an important factor that impairs wound healing, reduces the expression of TINAGL1 in fibroblasts through JNK pathway. Notably, the histology analysis, Masson trichrome assay and IHC assay showed that exogenous TINAGL1 promotes wound healing in diabetic mice by accelerating the formation of granulation tissues. Our study provides evidence that TINAGL1 has an essential role in diabetic wound healing, and meanwhile, indicates that manipulation of TINAGL1 might be a possible therapeutic approach.
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Affiliation(s)
- Wen-Qing Tian
- Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Si-Yu Chen
- Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Feng-Ning Chuan
- Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Wen-Rui Zhao
- Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Bo Zhou
- Department of Endocrinology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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12
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Musetti SN, Huang L. Tinagl1 Gene Therapy Suppresses Growth and Remodels the Microenvironment of Triple Negative Breast Cancer. Mol Pharm 2021; 18:2032-2038. [PMID: 33877834 DOI: 10.1021/acs.molpharmaceut.1c00008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Triple negative breast cancer (TNBC) remains one of the most challenging subtypes of breast cancer to treat and is responsible for approximately 12% of breast cancer cases in the US per year. In 2019, the protein Tinagl1 was identified as a key factor for improved prognoses in certain TNBC patients. While the intracellular mechanism of action has been thoroughly studied, little is known about the role of Tinagl1 in the tumor microenvironment. In this study, we developed a lipid nanoparticle-based gene therapy to directly target the expression of Tinagl1 in tumor cells for localized expression. Additionally, we sought to characterize the changes to the tumor microenvironment induced by Tinagl1 treatment, with the goal of informing future choices for combination therapies including Tinagl1. We found that Tinagl1 gene therapy was able to slow tumor growth from the first dose and that the effects held steady for nearly a week following the final dose. No toxicity was found with this treatment. Additionally, the use of Tinagl1 increases the tumor vasculature by 3-fold but does not increase the tumor permeability or risk of metastasis. However, the increase in vasculature arising from Tinagl1 therapy reduced the expression of Hif1a significantly (p < 0.01), which may decrease the risk of drug resistance.
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Affiliation(s)
- Sara N Musetti
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
| | - Leaf Huang
- Division of Pharmacoengineering and Molecular Pharmaceutics, Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599, United States
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Shan ZG, Sun ZW, Zhao LQ, Gou Q, Chen ZF, Zhang JY, Chen W, Su CY, You N, Zhuang Y, Zhao YL. Upregulation of Tubulointerstitial nephritis antigen like 1 promotes gastric cancer growth and metastasis by regulating multiple matrix metallopeptidase expression. J Gastroenterol Hepatol 2021; 36:196-203. [PMID: 32537806 DOI: 10.1111/jgh.15150] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 05/27/2020] [Accepted: 06/11/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND AND AIM Tubulointerstitial nephritis antigen-like 1 (TINAGL1), as a novel matricellular protein, has been demonstrated to participate in cancer progression, whereas the potential function of TINAGL1 in gastric cancer (GC) remains unknown. METHODS The expression pattern of TINAGL1 in GC was examined by immunohistochemistry, ELISA, real-time polymerase chain reaction, and Western blot. Correlation between TINAGL1 and matrix metalloproteinases (MMPs) was analyzed by the GEPIA website and Kaplan-Meier plots database. The lentivirus-based TINAGL1 knockdown, CCK-8, and transwell assays were used to test the function of TINAGL1 in vitro. The role of TINAGL1 was confirmed by subcutaneous xenograft, abdominal dissemination, and lung metastasis model. Microarray experiments, ELISA, real-time polymerase chain reaction, and Western blot were used to identify molecular mechanism. RESULTS TINAGL1 was increased in GC tumor tissues and associated with poor patient survival. Moreover, TINAGL1 significantly promoted GC cell proliferation and migration in vitro as well as facilitated GC tumor growth and metastasis in vivo. TINAGL1 expression in GC cells was accompanied with increasing MMPs including MMP2, MMP9, MMP11, MMP14, and MMP16. GEPIA database revealed that these MMPs were correlated with TINAGL1 in GC tumors and that the most highly expressed MMP was MMP2. Mechanically, TINAGL1 regulated MMP2 through the JNK signaling pathway activation. CONCLUSIONS Our data highlight that TINAGL1 promotes GC growth and metastasis and regulates MMP2 expression, indicating that TINAGL1 may serve as a therapeutic target for GC.
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Affiliation(s)
- Zhi-Guo Shan
- Department of General Surgery and Centre of Minimal Invasive Gastrointestinal Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Zhen-Wei Sun
- The 988 Hospital of PLA, Zhengzhou, Henan, China
| | - Li-Qun Zhao
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Qiang Gou
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Zhi-Fu Chen
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Jin-Yu Zhang
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Weisan Chen
- La Trobe Institute of Molecular Science, La Trobe University, Bundoora, Victoria, Australia
| | - Chong-Yu Su
- Department of General Surgery and Centre of Minimal Invasive Gastrointestinal Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Nan You
- Department of Hepatobiliary Surgery, Xinqiao Hospital, Third Military Medical University, Chongqing, China
| | - Yuan Zhuang
- National Engineering Research Centre of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy and Laboratory Medicine, Third Military Medical University, Chongqing, China
| | - Yong-Liang Zhao
- Department of General Surgery and Centre of Minimal Invasive Gastrointestinal Surgery, Southwest Hospital, Third Military Medical University, Chongqing, China
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Bisogno LS, Yang J, Bennett BD, Ward JM, Mackey LC, Annab LA, Bushel PR, Singhal S, Schurman SH, Byun JS, Nápoles AM, Pérez-Stable EJ, Fargo DC, Gardner K, Archer TK. Ancestry-dependent gene expression correlates with reprogramming to pluripotency and multiple dynamic biological processes. SCIENCE ADVANCES 2020; 6:6/47/eabc3851. [PMID: 33219026 PMCID: PMC7679169 DOI: 10.1126/sciadv.abc3851] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Accepted: 10/02/2020] [Indexed: 05/10/2023]
Abstract
Induced pluripotent stem cells (iPSCs) can be derived from differentiated cells, enabling the generation of personalized disease models by differentiating patient-derived iPSCs into disease-relevant cell lines. While genetic variability between different iPSC lines affects differentiation potential, how this variability in somatic cells affects pluripotent potential is less understood. We generated and compared transcriptomic data from 72 dermal fibroblast-iPSC pairs with consistent variation in reprogramming efficiency. By considering equal numbers of samples from self-reported African Americans and White Americans, we identified both ancestry-dependent and ancestry-independent transcripts associated with reprogramming efficiency, suggesting that transcriptomic heterogeneity can substantially affect reprogramming. Moreover, reprogramming efficiency-associated genes are involved in diverse dynamic biological processes, including cancer and wound healing, and are predictive of 5-year breast cancer survival in an independent cohort. Candidate genes may provide insight into mechanisms of ancestry-dependent regulation of cell fate transitions and motivate additional studies for improvement of reprogramming.
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Affiliation(s)
- Laura S Bisogno
- Chromatin and Gene Expression Section, Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Jun Yang
- Chromatin and Gene Expression Section, Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Brian D Bennett
- Integrative Bioinformatics, Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - James M Ward
- Integrative Bioinformatics, Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Lantz C Mackey
- Chromatin and Gene Expression Section, Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Lois A Annab
- Chromatin and Gene Expression Section, Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Pierre R Bushel
- Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Sandeep Singhal
- Department of Pathology, Department of Computer Science, University of North Dakota, Grand Forks, ND, USA
| | - Shepherd H Schurman
- Clinical Research Unit, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Jung S Byun
- Division of Intramural Research, Office of the Scientific Director, National Institute on Minority Health and Health Disparities, Bethesda, MD, USA
| | - Anna María Nápoles
- Division of Intramural Research, Office of the Scientific Director, National Institute on Minority Health and Health Disparities, Bethesda, MD, USA
| | - Eliseo J Pérez-Stable
- Division of Intramural Research, Office of the Scientific Director, National Institute on Minority Health and Health Disparities, Bethesda, MD, USA
- Division of Intramural Research, National Heart, Lung and Blood Institute, Bethesda, MD, USA
| | - David C Fargo
- Office of Scientific Computing, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - Kevin Gardner
- Division of Intramural Research, Office of the Scientific Director, National Institute on Minority Health and Health Disparities, Bethesda, MD, USA
- Department of Pathology and Cell Biology, Columbia University Medical Center, Columbia University, New York, NY, USA
| | - Trevor K Archer
- Chromatin and Gene Expression Section, Epigenetics and Stem Cell Biology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA.
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Zuo Y, Lu Y, Xu Q, Sun D, Liang X, Li X, Li Y. Inhibitory effect of dihydromyricetin on the proliferation of JAR cells and its mechanism of action. Oncol Lett 2020; 20:357-363. [PMID: 32565961 PMCID: PMC7286138 DOI: 10.3892/ol.2020.11546] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 03/05/2020] [Indexed: 12/21/2022] Open
Abstract
Dihydromyricetin (DMY) is a novel natural drug with antitumor activity against some cancer cells without obvious toxicity. Previously, its apoptotic effect on human choriocarcinoma was detected. The present study further investigated the therapeutic potential of DMY as a new drug for the treatment of choriocarcinoma, as well as its anti-proliferative effect and mechanism of action. The short-term proliferation of JAR cells was determined by MTT assay, whereas the effect of DMY on long-term cell proliferation was determined by colony forming assay. Flow cytometry was used to detect changes in the cell cycle. Furthermore, western blotting was used to detect the expression levels of proliferation-associated proteins such as cyclin A1, cyclin D1, SMAD3 and SMAD4. Reverse transcription-quantitative PCR (RT-qPCR) was used to quantify mRNA expression levels. The results indicated that DMY inhibited short and long-term proliferation of JAR cells in a concentration-dependent manner. Flow cytometry demonstrated S/G2/M cell cycle arrest, and western blotting revealed the downregulation of SMAD3, SMAD4, cyclin A1 and cyclin D1 expression levels. The results of RT-qPCR and western blotting were consistent. Overall, the findings of the present study suggest that DMY inhibits the proliferation of human choriocarcinoma JAR cells, potentially through cell cycle arrest via the downregulation of cyclin A1, cyclin D1, SMAD3 and SMAD4 expression levels.
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Affiliation(s)
- Yanzhen Zuo
- Department of Pharmacology, Chengde Medical University, Chengde, Hebei 067000, P.R. China
| | - Yanjie Lu
- Department of Pathology, Chengde Medical University, Chengde, Hebei 067000, P.R. China
| | - Qian Xu
- Research Laboratory, Chengde Medical University, Chengde, Hebei 067000, P.R. China
| | - Dayong Sun
- Department of Tumor Radiation and Chemotherapy Center, Chengde Central Hospital, Chengde, Hebei 067000, P.R. China
| | - Xiujun Liang
- Research Laboratory, Chengde Medical University, Chengde, Hebei 067000, P.R. China
| | - Xiaoru Li
- Department of Gynaecology, Chengde Central Hospital, Chengde, Hebei 067000, P.R. China
| | - Yuhong Li
- Department of Pathology, Chengde Medical University, Chengde, Hebei 067000, P.R. China
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Akaiwa M, Fukui E, Matsumoto H. Tubulointerstitial nephritis antigen-like 1 deficiency alleviates age-dependent depressed ovulation associated with ovarian collagen deposition in mice. Reprod Med Biol 2020; 19:50-57. [PMID: 31956285 PMCID: PMC6955583 DOI: 10.1002/rmb2.12301] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/16/2019] [Accepted: 09/01/2019] [Indexed: 12/14/2022] Open
Abstract
PURPOSE This study aimed to examine whether the Tinagl1 might be associated with ovulation in aged females and reproductive age-associated fibrosis in the stroma of the ovary. METHODS To address the ovulatory ability and quality of ovulated oocytes, we induced ovulation by treatment with equine chorionic gonadotropin (eCG) and human chorionic gonadotropin (hCG) followed by in vitro fertilization. We also performed Picrosirius Red (PSR) staining to evaluate ovarian collagen deposition. RESULTS As compared to ovulation in 8- to 9-month-old Tinagl1flox/flox mice, the number of ovulated oocytes from Tinagl1flox/flox mice decreased in an age-dependent manner in mice more than 10-11 months old, whereas the ovulated oocyte numbers in Tinagl1 -/- mice decreased significantly at 14-15 months. In vitro fertilization followed by embryo culture demonstrated the normal developmental potential of Tinagl1-null embryos during the preimplantation period. PSR staining indicated that collagen was found throughout the ovarian stroma in an age-dependent manner in Tinagl1flox/flox females, whereas those distributions were delayed to 14-15 months in Tinagl1 -/- females. This timing was consistent with the delayed timing of age-related decline of ovulation in Tinagl1 -/- females. CONCLUSIONS The alleviation of age-associated depression of ovulation was caused by delayed ovarian collagen deposition in Tinagl1-null female mice.
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Affiliation(s)
- Masato Akaiwa
- Laboratory of Animal Breeding and ReproductionDivision of Animal ScienceSchool of AgricultureUtsunomiya UniversityUtsunomiyaJapan
| | - Emiko Fukui
- Laboratory of Animal Breeding and ReproductionDivision of Animal ScienceSchool of AgricultureUtsunomiya UniversityUtsunomiyaJapan
- Center for Bioscience Research and EducationUtsunomiya UniversityUtsunomiyaJapan
| | - Hiromichi Matsumoto
- Laboratory of Animal Breeding and ReproductionDivision of Animal ScienceSchool of AgricultureUtsunomiya UniversityUtsunomiyaJapan
- Center for Bioscience Research and EducationUtsunomiya UniversityUtsunomiyaJapan
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