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Lofgren KA, Reker NC, Sreekumar S, Kenny PA. Pan-cancer distribution of cleaved cell-surface Amphiregulin, the target of the GMF-1A3 antibody drug conjugate. Antib Ther 2022; 5:226-231. [PMID: 36110096 PMCID: PMC9469882 DOI: 10.1093/abt/tbac020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 07/08/2022] [Accepted: 07/28/2022] [Indexed: 11/21/2022] Open
Abstract
Amphiregulin is a transmembrane protein which, when cleaved by the TACE/ADAM17 protease, releases a soluble epidermal growth factor receptor ligand domain that promotes proliferation of normal and malignant cells. We previously described a rabbit monoclonal antibody, GMF-1A3, that selectively recognizes the cell-associated cleaved amphiregulin epitope. Antibody-drug conjugates had anti-tumor activity against human breast cancer xenografts. Several tumor types express amphiregulin, but evidence for a functional requirement for amphiregulin in these malignancies is limited. By directly evaluating amphiregulin cleavage with immunohistochemistry, GMF-1A3 provides a more direct measure of amphiregulin activity. Using 370 specimens from 10 tumor types (as well as normal controls), we demonstrate that cleaved amphiregulin is widely expressed in solid tumors and is especially common (> 50% of cases) in breast, prostate, liver and lung cancer. As a potential companion diagnostic for this antibody-drug conjugate, this assay allows identification of tumors with high levels of the cleaved amphiregulin target.
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Affiliation(s)
- Kristopher A Lofgren
- Kabara Cancer Research Institute , Gundersen Medical Foundation, La Crosse, Wisconsin, USA
| | - Nicolette C Reker
- Kabara Cancer Research Institute , Gundersen Medical Foundation, La Crosse, Wisconsin, USA
| | - Sreeja Sreekumar
- Kabara Cancer Research Institute , Gundersen Medical Foundation, La Crosse, Wisconsin, USA
| | - Paraic A Kenny
- Kabara Cancer Research Institute , Gundersen Medical Foundation, La Crosse, Wisconsin, USA
- Department of Medicine , University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA
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2
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Kang D, Kim IH. Molecular Mechanisms and Potential Rationale of Immunotherapy in Peritoneal Metastasis of Advanced Gastric Cancer. Biomedicines 2022; 10:biomedicines10061376. [PMID: 35740397 PMCID: PMC9220323 DOI: 10.3390/biomedicines10061376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/03/2022] [Accepted: 06/08/2022] [Indexed: 11/16/2022] Open
Abstract
Peritoneal metastasis (PM) is one of the most frequent metastasis patterns of gastric cancer (GC), and the prognosis of patients with PM is very dismal. According to Paget’s theory, disseminated free cancer cells are seeded and survive in the abdominal cavity, adhere to the peritoneum, invade the subperitoneal tissue, and proliferate through angiogenesis. In these sequential processes, several key molecules are involved. From a therapeutic point of view, immunotherapy with chemotherapy combination has become the standard of care for advanced GC. Several clinical trials of newer immunotherapy agents are ongoing. Understanding of the molecular process of PM and the potential rationale of immunotherapy for PM treatment is necessary. Beyond understanding of the molecular aspect of PM, many studies have been conducted on the modality of treatment of PM. Notably, intraperitoneal approaches, including chemotherapy or immunotherapy, have been conducted, because systemic treatment of PM has limitations. In this study, we reviewed the molecular mechanisms and immunologic aspects of PM, and intraperitoneal approaches under investigation for treating PM.
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Affiliation(s)
- Donghoon Kang
- Division of Gastroenterology, Department of Internal Medicine, Seoul St. Mary’s Hospital, The Catholic University of Korea, Seoul 06591, Korea;
| | - In-Ho Kim
- Division of Medical Oncology, Department of Internal Medicine, Seoul St. Mary’s Hospital, The Catholic University of Korea, Seoul 06591, Korea
- Correspondence:
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3
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Singh SS, Chauhan SB, Ng SSS, Corvino D, de Labastida Rivera F, Engel JA, Waddell N, Mukhopadhay P, Johnston RL, Koufariotis LT, Nylen S, Prakash Singh O, Engwerda CR, Kumar R, Sundar S. Increased amphiregulin expression by CD4 + T cells from individuals with asymptomatic Leishmania donovani infection. Clin Transl Immunology 2022; 11:e1396. [PMID: 35663920 PMCID: PMC9136704 DOI: 10.1002/cti2.1396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Revised: 04/08/2022] [Accepted: 05/12/2022] [Indexed: 11/10/2022] Open
Abstract
Objectives There is an urgent need to be able to identify individuals with asymptomatic Leishmania donovani infection, so their risk of progressing to VL and transmitting parasites can be managed. This study examined transcriptional markers expressed by CD4+ T cells that could distinguish asymptomatic individuals from endemic controls and visceral leishmaniasis (VL) patients. Methods CD4+ T cells were isolated from individuals with asymptomatic L. donovani infection, endemic controls and VL patients. RNA was extracted and RNAseq employed to identify differentially expressed genes. The expression of one gene and its protein product during asymptomatic infection were evaluated. Results Amphiregulin (AREG) was identified as a distinguishing gene product in CD4+ T cells from individuals with asymptomatic L. donovani infection, compared to VL patients and healthy endemic control individuals. AREG levels in plasma and antigen-stimulated whole-blood assay cell culture supernatants were significantly elevated in asymptomatic individuals, compared to endemic controls and VL patients. Regulatory T (Treg) cells were identified as an important source of AREG amongst CD4+ T-cell subsets in asymptomatic individuals. Conclusion Increased Treg cell AREG expression was identified in individuals with asymptomatic L. donovani infection, suggesting the presence of an ongoing inflammatory response in these individuals required for controlling infection and that AREG may play an important role in preventing inflammation-induced tissue damage and subsequent disease in asymptomatic individuals.
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Affiliation(s)
- Siddharth Sankar Singh
- Department of Medicine, Institute of Medical SciencesBanaras Hindu UniversityVaranasiIndia
| | - Shashi Bhushan Chauhan
- Department of Medicine, Institute of Medical SciencesBanaras Hindu UniversityVaranasiIndia
| | - Susanna SS Ng
- QIMR Berghofer Medical Research InstituteBrisbaneAustralia
- Institute for Experimental OncologyUniversity of BonnBonnGermany
| | - Dillon Corvino
- QIMR Berghofer Medical Research InstituteBrisbaneAustralia
- Institute for Experimental OncologyUniversity of BonnBonnGermany
| | | | | | - Nic Waddell
- Department of Medicine, Institute of Medical SciencesBanaras Hindu UniversityVaranasiIndia
| | - Pamela Mukhopadhay
- Department of Medicine, Institute of Medical SciencesBanaras Hindu UniversityVaranasiIndia
| | - Rebecca L Johnston
- Department of Medicine, Institute of Medical SciencesBanaras Hindu UniversityVaranasiIndia
| | - Lambros T Koufariotis
- Department of Medicine, Institute of Medical SciencesBanaras Hindu UniversityVaranasiIndia
| | - Susanne Nylen
- Department of Microbiology, Tumor and Cell BiologyKarolinska InstituteStockholmSweden
| | | | | | - Rajiv Kumar
- Centre of Experimental Medicine and SurgeryInstitute of Medical SciencesBanaras Hindu UniversityVaranasiIndia
| | - Shyam Sundar
- Department of Medicine, Institute of Medical SciencesBanaras Hindu UniversityVaranasiIndia
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4
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Singh SS, Chauhan SB, Kumar A, Kumar S, Engwerda CR, Sundar S, Kumar R. Amphiregulin in cellular physiology, health, and disease: Potential use as a biomarker and therapeutic target. J Cell Physiol 2021; 237:1143-1156. [PMID: 34698381 DOI: 10.1002/jcp.30615] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 10/02/2021] [Accepted: 10/06/2021] [Indexed: 12/18/2022]
Abstract
Amphiregulin (AREG), which acts as one of the ligands for epidermal receptor growth factor receptor (EGFR), plays a crucial role in tissue repair, inflammation, and immunity. AREG is synthesized as membrane-anchored pre-protein, and is excreted after proteolytic cleavage, and serves as an autocrine or paracrine factor. After engagement with the EGFR, AREG triggers a cascade of signaling events required for many cellular physiological processes including metabolism, cell cycle, and proliferation. Under different inflammatory and pathogenic conditions, AREG is expressed by various activated immune cells that orchestrate both tolerance and host resistance mechanisms. Several factors including xenobiotics, cytokines, and inflammatory lipids have been shown to trigger AREG gene expression and release. In this review, we discuss the structure, function, and regulation of AREG, its role in tissue repair, inflammation, and homeostasis as well as the potential of AREG as a biomarker and therapeutic target.
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Affiliation(s)
- Siddharth S Singh
- Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Shashi B Chauhan
- Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Awnish Kumar
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Shashi Kumar
- Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Christian R Engwerda
- Department of Immunology, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Shyam Sundar
- Department of Medicine, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
| | - Rajiv Kumar
- Centre of Experimental Medicine & Surgery, Institute of Medical Sciences, Banaras Hindu University, Varanasi, India
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5
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FGF Signalling in the Self-Renewal of Colon Cancer Organoids. Sci Rep 2019; 9:17365. [PMID: 31758153 PMCID: PMC6874569 DOI: 10.1038/s41598-019-53907-7] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 11/04/2019] [Indexed: 12/12/2022] Open
Abstract
The progression of colorectal cancer (CRC) is supposedly driven by cancer stem cells (CSC) which are able to self-renew and simultaneously fuel bulk tumour mass with highly proliferative and differentiated tumour cells. However, the CSC-phenotype in CRC is unstable and dependent on environmental cues. Fibroblast growth factor 2 (FGF2) is essential and necessary for the maintenance of self-renewal in adult and embryonic stem cells. Investigating its role in self-renewal in advanced CRC patient-derived organoids, we unveiled that FGF-receptor (FGFR) inhibition prevents organoid formation in very early expanding cells but induces cyst formation when applied to pre-established organoids. Comprehensive transcriptome analyses revealed that the induction of the transcription factor activator-protein-1 (AP-1) together with MAPK activation was most prominent after FGFR-inhibition. These effects resemble mechanisms of an acquired resistance against other described tyrosine kinase inhibitors such as EGF-receptor targeted therapies. Furthermore, we detected elevated expression levels of several self-renewal and stemness-associated genes in organoid cultures with active FGF2 signalling. The combined data assume that CSCs are a heterogeneous population while self-renewal is a common feature regulated by distinct but converging pathways. Finally, we highlight FGF2 signalling as one of numerous components of the complex regulation of stemness in cancer.
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6
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Jiang J, Zhao W, Tang Q, Wang B, Li X, Feng Z. Over expression of amphiregulin promoted malignant progression in gastric cancer. Pathol Res Pract 2019; 215:152576. [DOI: 10.1016/j.prp.2019.152576] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 07/17/2019] [Accepted: 07/31/2019] [Indexed: 12/30/2022]
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7
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Amin K, Yaqoob U, Schultz B, Vaughn BP, Khoruts A, Howard JR, DeFor TE, Forster C, Meyer C, Gandhi I, Weisdorf DJ, Rashidi A, MacMillan ML, Blazar BR, Panoskaltsis-Mortari A, Holtan SG. Amphiregulin in intestinal acute graft-versus-host disease: a possible diagnostic and prognostic aid. Mod Pathol 2019; 32:560-567. [PMID: 30425334 PMCID: PMC6941942 DOI: 10.1038/s41379-018-0170-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 10/01/2018] [Accepted: 10/02/2018] [Indexed: 12/28/2022]
Abstract
Amphiregulin, a weak epidermal growth factor receptor agonist, is elevated, while epidermal growth factor, a strong epidermal growth factor receptor agonist, is low in the blood of patients with severe acute graft-versus-host disease. However, the tissue expression and function of these epidermal growth factor receptor ligands in acute graft-versus-host disease target organs is unknown. We compared by immunohistochemistry expression of amphiregulin and epidermal growth factor in archived, formalin-fixed, paraffin-embedded intestinal tissues of 48 patients with biopsy-proven gastrointestinal acute graft-versus-host disease to 3 groups: (1) 10 non-hematopoietic cell transplant normal controls, (2) 11 patients with newly diagnosed ulcerative colitis (ulcerative colitis), (3) 8 patients with a clinical diagnosis of acute graft-versus-host disease despite pathologically non-diagnostic biopsies, (4) and 10 cases of cytomegalovirus colitis. We used a semi-quantitative score of 0 (absent) through 3 (strong) to describe the intensity of immunohistochemical staining. We correlated serum and tissue amphiregulin and epidermal growth factor in patients with acute graft-versus-host disease. Gastrointestinal amphiregulin was significantly lower in acute graft-versus-host disease biopsies (median score 1), ulcerative colitis (median score 1.5), and cytomegalovirus colitis (median score 1) than in normal colon (median score 2, p = 0.004, p = 0.03, p = 0.009 respectively). Amphiregulin expression in was low in 74% of acute graft-versus-host disease cases with or without significant apoptosis. Patients with acute graft-versus-host disease exhibiting the pattern of high gastrointestinal amphiregulin but low serum amphiregulin (n = 14) had the best 1-year survival at 71%, but patients with high serum amphiregulin had poorer survival (<30%) regardless of gastrointestinal amphiregulin expression. Overall, our results lead to the hypothesis that amphiregulin is released into the circulation from damaged intestinal epithelium and stroma, although contributions from other cellular sources are likely. Low gastrointestinal amphiregulin expression by immunohistochemistry may be further studied for its utility in the pathologic acute graft-versus-host disease diagnosis without classic apoptotic changes.
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Affiliation(s)
- Khalid Amin
- Department of Laboratory Medicine and Pathology, University
of Minnesota, Minneapolis, MN, USA
| | | | - Brittney Schultz
- Department of Internal Medicine, University of Minnesota,
Minneapolis, MN, USA
| | - Byron P. Vaughn
- Department of Internal Medicine, Division of
Gastroenterology, University of Minnesota, Minneapolis, MN, USA
| | - Alexander Khoruts
- Department of Internal Medicine, Division of
Gastroenterology, University of Minnesota, Minneapolis, MN, USA
| | - Justin R. Howard
- Department of Internal Medicine, Division of
Gastroenterology, University of Minnesota, Minneapolis, MN, USA
| | - Todd E. DeFor
- Biostatistics and Informatics, University of Minnesota,
Minneapolis, MN, USA,Hematology, Oncology and Transplant, University of
Minnesota, Minneapolis, MN, USA
| | - Colleen Forster
- Department of Laboratory Medicine and Pathology, University
of Minnesota, Minneapolis, MN, USA
| | - Carolyn Meyer
- Department of Pediatrics, University of Minnesota,
Minneapolis, MN, USA
| | - Isha Gandhi
- College of Biological Sciences, University of Minnesota,
Minneapolis, MN, USA
| | - Daniel J. Weisdorf
- Hematology, Oncology and Transplant, University of
Minnesota, Minneapolis, MN, USA
| | - Armin Rashidi
- Hematology, Oncology and Transplant, University of
Minnesota, Minneapolis, MN, USA
| | | | - Bruce R. Blazar
- Hematology, Oncology and Transplant, University of
Minnesota, Minneapolis, MN, USA
| | - Angela Panoskaltsis-Mortari
- Department of Pediatrics, University of Minnesota,
Minneapolis, MN, USA,Hematology, Oncology and Transplant, University of
Minnesota, Minneapolis, MN, USA
| | - Shernan G. Holtan
- Hematology, Oncology and Transplant, University of
Minnesota, Minneapolis, MN, USA
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8
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Xia Q, Zhou Y, Yong H, Wang X, Zhao W, Ding G, Zhu J, Li X, Feng Z, Wang B. Elevated epiregulin expression predicts poor prognosis in gastric cancer. Pathol Res Pract 2019; 215:873-879. [PMID: 30738695 DOI: 10.1016/j.prp.2019.01.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 01/05/2019] [Accepted: 01/25/2019] [Indexed: 02/06/2023]
Abstract
Epiregulin (EREG) is a novel family member of EGF-like ligands and have elevated expression in a variety of human cancers. EREG expression promotes tumor progression and metastasis and reduces patient survival. However, the expression of EREG and its prognostic value are not clear in gastric cancer (GC). We assessed EREG mRNA and protein expression in GC tissues from Chinese patients using quantitative real-time polymerase chain reaction (qRT-PCR) and immunohistochemical staining of tissue microarray, and analyzed the correlation between the level of EREG expression and patient clinical characteristics and prognosis. We found that EREG expression was significantly higher in GC tissues than in matched adjacent noncancerous tissues. High EREG protein expression in GC was significantly associated with TNM stage including tumor size, lymph node metastases and distant metastases as well as poor overall survival. These finding demonstrate that EREG is an independent prognostic biomarker for GC.
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Affiliation(s)
- Qiuyan Xia
- Department of Oncology, The Affiliated Aoyang Hospital of Jiangsu University, Zhangjiagang 215617, China
| | - Yan Zhou
- Department of Oncology, The Affiliated Aoyang Hospital of Jiangsu University, Zhangjiagang 215617, China; Jiangsu University Aoyang Institute of Oncology, Zhangjiagang 215617, China
| | - Hongmei Yong
- Department of Oncology, Huai'an Hospital Affiliated of Xuzhou Medical College and Huai'an Second People's Hospital, Huai'an 223200, China
| | - Xudong Wang
- Clinical Biobank, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - Wei Zhao
- Department of Pathology, Nanjing Medical University, Nanjing 210029, China
| | - Guipeng Ding
- Department of Pathology, Nanjing Medical University, Nanjing 210029, China
| | - Jin Zhu
- Huadong Medical Institute of Biotechniques, Nanjing 210029, China
| | - Xiaohua Li
- The Center for Pathology & Laboratory Medicine, The Affiliated Aoyang Hospital of Jiangsu University, Zhangjiagang 215617, China; School of Medicine, Jiangsu University, Zhenjiang 212013, China; The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Zhenqing Feng
- Department of Oncology, The Affiliated Aoyang Hospital of Jiangsu University, Zhangjiagang 215617, China; Key Laboratory of Antibody Technique of Ministry of Health, Nanjing Medical University, Nanjing 210029, China; Collaborative Innovation Center for Cancer Personalized Medicine, Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Nanjing Medical University, Nanjing 210029, China.
| | - Bing Wang
- Department of Oncology, The Affiliated Aoyang Hospital of Jiangsu University, Zhangjiagang 215617, China; Department of Oncology, Shanghai Ruijin Hospital Luwan Branch, Shanghai Jiaotong University, Shanghai 200020, China.
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9
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Choi W, Kim J, Park J, Lee DH, Hwang D, Kim JH, Ashktorab H, Smoot D, Kim SY, Choi C, Koh GY, Lim DS. YAP/TAZ Initiates Gastric Tumorigenesis via Upregulation of MYC. Cancer Res 2018; 78:3306-3320. [PMID: 29669762 DOI: 10.1158/0008-5472.can-17-3487] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 02/07/2018] [Accepted: 04/12/2018] [Indexed: 11/16/2022]
Abstract
YAP and TAZ play oncogenic roles in various organs, but the role of YAP/TAZ in gastric cancer remains unclear. Here, we show that YAP/TAZ activation initiates gastric tumorigenesis in vivo and verify its significance in human gastric cancer. In mice, YAP/TAZ activation in the pyloric stem cell led to step-wise tumorigenesis. RNA sequencing identified MYC as a decisive target of YAP, which controls MYC at transcriptional and posttranscriptional levels. These mechanisms tightly regulated MYC in homeostatic conditions, but YAP activation altered this balance by impeding miRNA processing, causing a shift towards MYC upregulation. Pharmacologic inhibition of MYC suppressed YAP-dependent phenotypes in vitro and in vivo, verifying its functional role as a key mediator. Human gastric cancer samples also displayed a significant correlation between YAP and MYC. We reanalyzed human transcriptome data to verify enrichment of YAP signatures in a subpopulation of gastric cancers and found that our model closely reflected the molecular pattern of patients with high YAP activity. Overall, these results provide genetic evidence of YAP/TAZ as oncogenic initiators and drivers for gastric tumors with MYC as the key downstream mediator. These findings are also evident in human gastric cancer, emphasizing the significance of YAP/TAZ signaling in gastric carcinogenesis.Significance: YAP/TAZ activation initiates gastric carcinogenesis with MYC as the key downstream mediator. Cancer Res; 78(12); 3306-20. ©2018 AACR.
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Affiliation(s)
- Wonyoung Choi
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea
| | - Jeongsik Kim
- National Creative Research Initiatives Center for Cell Division and Differentiation, Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Jaeoh Park
- National Creative Research Initiatives Center for Cell Division and Differentiation, Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Da-Hye Lee
- National Creative Research Initiatives Center for Cell Division and Differentiation, Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Daehee Hwang
- National Creative Research Initiatives Center for Cell Division and Differentiation, Department of Biological Sciences, KAIST, Daejeon, Republic of Korea
| | - Jeong-Hwan Kim
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Hassan Ashktorab
- Department of Medicine and Cancer Research Center, Howard University College of Medicine, Washington DC
| | - Duane Smoot
- Department of Internal Medicine, Meharry Medical College, Nashville, Tennessee
| | - Seon-Young Kim
- Medical Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Chan Choi
- Department of Pathology, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Jeonnam, Republic of Korea
| | - Gou Young Koh
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.,Center for Vascular Research, Institute for Basic Science, Daejeon, Republic of Korea
| | - Dae-Sik Lim
- National Creative Research Initiatives Center for Cell Division and Differentiation, Department of Biological Sciences, KAIST, Daejeon, Republic of Korea.
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10
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Dong X, Chen R, Lin H, Lin T, Pan S. lncRNA BG981369 Inhibits Cell Proliferation, Migration, and Invasion, and Promotes Cell Apoptosis by SRY-Related High-Mobility Group Box 4 (SOX4) Signaling Pathway in Human Gastric Cancer. Med Sci Monit 2018; 24:718-726. [PMID: 29398692 PMCID: PMC5810617 DOI: 10.12659/msm.905965] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background Human gastric cancer (GC) is a leading primary cause of cancer-associated deaths in both males and females worldwide. However, there are few effective diagnostic and therapeutic measures for GC patients due to the complicated underlying mechanisms of GC. Recently, increasing research has indicated that lncRNAs may play a critical role in the progression of GC. Material/Methods AI769947, AK054978, DB077273, BG981369, AK054588, and AF131784 expressions were analyzed by qRT-PCR assay in GC tissues and corresponding normal tissues (n=44). BG981369 expression was detected by qRT-PCR assay in GC cells. BG981369 was overexpressed and silenced in AGS and SNU-5 cells. The proliferation ability was detected by MTT and colony formation assays. Cell cycle distribution and cell apoptosis rate were analyzed by flow cytometry. The migration and invasion abilities were measured by Transwell assay. In addition, SOX4 expression was analyzed by qRT-PCR in GC tissues. The correlation between SOX4 and BG981369 was analyzed by Pearson analysis. Results The results indicated that lncRNA BG981369 was significantly higher in GC tissues than in normal tissues. Overexpression of BG981369 inhibited the proliferation, migration, and invasion and promoted apoptosis of gastric adenocarcinoma (AGS) cells, and silencing of BG981369 promoted proliferation, migration, and invasion, and inhibited cell apoptosis of SNU-5 cells. Furthermore, we found that SOX4 may act as a downstream mediator of BG981369, suggesting that BG981369 inhibits proliferation, migration, and invasion, and promotes apoptosis by targeting SOX4 in the GC cell lines. Conclusions Our results suggest that BG981369 and SOX4 are potentially effective therapeutic targets for GC.
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Affiliation(s)
- Xiuli Dong
- Department of Gastroenterology and Hepatology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
| | - Renpin Chen
- Department of Gastroenterology and Hepatology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
| | - Haihua Lin
- Department of Pediatrics, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China (mainland)
| | - Tiesu Lin
- Department of Gastroenterology and Hematology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
| | - Shuang Pan
- Department of Gastroenterology and Hepatology, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
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11
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Wang T, Qu X, Jiang J, Gao P, Zhao D, Lian X, Li X. Diagnostic significance of urinary long non-coding PCA3 RNA in prostate cancer. Oncotarget 2017; 8:58577-58586. [PMID: 28938580 PMCID: PMC5601676 DOI: 10.18632/oncotarget.17272] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 03/31/2017] [Indexed: 12/19/2022] Open
Abstract
Prostate cancer antigen 3(PCA3) is a long non-coding RNA, which was found increased expression in CaP patients than healthy individual. In this study, the individual nucleic acid of PCA3 and PSA was recombinant expressed as a reference reagent, and a quantitative RT-PCR with TaqMan assay was developed to examine the copies of PCA3 and PSA gene in urine. The results showed that the area under the receiver operating characteristic curve (AUROC) was 0.717, 0.444 and 0.916 for the number of PCA3 copy, PSA copy and for the score of PCA3/PSA RNA, respectively. Additionally, the AUROC for serum tPSA was 0.674 with a low specificity of 12.07%. Finally, the algorithm of PCA3 RNA versus PSA RNA was evaluated and corroborated as CaP biomarker by conducting a multicentric clinical trial. This study not only validated the developed technique of qRT-PCR with TaqMan assay for examination of urinary PCA3 and PSA RNA, it also demonstrated that the score of the PCA/PSA RNA was a reliable signature for CaP diagnosis.
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Affiliation(s)
- Tao Wang
- Key Laboratory of PreMed Precision Medicine, Soochow University, Suzhou, 215121, China.,Jiangsu Provincial Key Laboratory of Molecular Biology and Translational Medicine of Malignant Tumor, Suzhou, 215123, China
| | - Xiangyun Qu
- Key Laboratory of PreMed Precision Medicine, Soochow University, Suzhou, 215121, China
| | - Jiajia Jiang
- Affiliated AoYang Hospital of Jiangsu University, Zhangjiagang, Suzhou, 215600, China
| | - Peng Gao
- Key Laboratory of PreMed Precision Medicine, Soochow University, Suzhou, 215121, China
| | - Dingding Zhao
- Key Laboratory of PreMed Precision Medicine, Soochow University, Suzhou, 215121, China
| | - Xueqi Lian
- Affiliated AoYang Hospital of Jiangsu University, Zhangjiagang, Suzhou, 215600, China
| | - Xiaohua Li
- Affiliated AoYang Hospital of Jiangsu University, Zhangjiagang, Suzhou, 215600, China.,Nanjing Medical University, Nanjing, 211166, China
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