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Hernández Ávila R, Díaz-Zaragoza M, Ostoa-Saloma P. Proteomic analysis of IgM antigens from mammary tissue under pre- and post-cancer conditions using the MMTV-PyVT mouse model. PeerJ 2022; 10:e14175. [PMID: 36275472 PMCID: PMC9586126 DOI: 10.7717/peerj.14175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 09/12/2022] [Indexed: 01/21/2023] Open
Abstract
We analyzed the recognition of tumor antigens by IgM in transgenic MMTV-PyVT mice. PyVT female mice are a model of breast cancer that simulates its counterpart in humans. The PyVT model allows studying antigen recognition in two conditions: before and during tumor expression. We attempted to identify by sequence, the antigens recognized by IgM that are expressed or disappear in the membrane of breast transgenic tissue during the transition "No tumor-Tumor". 2D immunoblots were obtained of isolated membranes from the breast tissue in the fifth, sixth, and seventh week (transition point). Proteins recognized by IgM were sequenced in duplicate by MALDI-TOF. In the transition, we observed the disappearance of antigens in transgenic mice with respect to non-transgenic ones. We believe that in the diagnosis of cancer in its early stages, the expression of early antigens is as important as their early delocalization, with the latter having the advantage that, under normal conditions, we can know which proteins should be present at a given time. Therefore, we could consider that also the absence of antigens could be considered as a biomarker of cancer in progress.
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Affiliation(s)
- Ricardo Hernández Ávila
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autonoma de México, Ciudad de México, CdMx, México
| | - Mariana Díaz-Zaragoza
- Laboratorio de Sistemas Biológicos, Departamento de Ciencias de la Salud. Centro Universitario de los Valles, Universidad de Guadalajara, Ameca, Jalisco, México
| | - Pedro Ostoa-Saloma
- Departamento de Inmunología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autonoma de México, Ciudad de México, CdMx, México
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2
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Dong X, Song S, Li Y, Fan Y, Wang L, Wang R, Huo L, Scott A, Xu Y, Pizzi MP, Ma L, Wang Y, Jin J, Zhao W, Yao X, Johnson R, Wang L, Wang Z, Peng G, Ajani JA. Loss of ARID1A activates mTOR signaling and SOX9 in gastric adenocarcinoma-rationale for targeting ARID1A deficiency. Gut 2022; 71:467-478. [PMID: 33785559 PMCID: PMC9724309 DOI: 10.1136/gutjnl-2020-322660] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 02/20/2021] [Accepted: 03/02/2021] [Indexed: 12/27/2022]
Abstract
BACKGROUND Gastric adenocarcinoma (GAC) is a lethal disease with limited therapeutic options. Genetic alterations in chromatin remodelling gene AT-rich interactive domain 1A (ARID1A) and mTOR pathway activation occur frequently in GAC. Targeting the mechanistic target of rapamycin (mTOR) pathway in unselected patients has failed to show survival benefit. A deeper understanding of GAC might identify a subset that can benefit from mTOR inhibition. METHODS Genomic alterations in ARID1A were analysed in GAC. Mouse gastric epithelial cells from CK19-Cre-Arid1Afl/fl and wild-type mice were used to determine the activation of oncogenic genes due to loss of Arid1A. Functional studies were performed to determine the significance of loss of ARID1A and the sensitivity of ARID1A-deficient cancer cells to mTOR inhibition in GAC. RESULTS More than 30% of GAC cases had alterations (mutations or deletions) of ARID1A and ARID1A expression was negatively associated with phosphorylation of S6 and SOX9 in GAC tissues and patient-derived xenografts (PDXs). Activation of mTOR signalling (increased pS6) and SOX9 nuclear expression were strongly increased in Arid1A-/- mouse gastric tissues which could be curtailed by RAD001, an mTOR inhibitor. Knockdown of ARID1A in GAC cell lines increased pS6 and nuclear SOX9 and increased sensitivity to an mTOR inhibitor which was further amplified by its combination with fluorouracil both in vitro and in vivo in PDXs. CONCLUSIONS The loss of ARID1A activates pS6 and SOX9 in GAC, which can be effectively targeted by an mTOR inhibitor. Therefore, our studies suggest a new therapeutic strategy of clinically targeting the mTOR pathway in patients with GAC with ARID1A deficiency.
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Affiliation(s)
- Xiaochuan Dong
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030;,Department of Pathology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Shumei Song
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Yuan Li
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030;,Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang, 110001, P.R. China
| | - Yibo Fan
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Lulu Wang
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Ruiping Wang
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Longfei Huo
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Ailing Scott
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Yan Xu
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030;,Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang, 110001, P.R. China
| | - Melissa Pool Pizzi
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Lang Ma
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Ying Wang
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Jiankang Jin
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Wei Zhao
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Xiaodan Yao
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Randy Johnson
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Linghua Wang
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Zhenning Wang
- Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang, 110001, P.R. China
| | - Guang Peng
- Department of Genomic Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030
| | - Jaffer A. Ajani
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030;,Corresponding authors: Shumei Song, MD, Ph.D, Department of Gastrointestinal Medical Oncology, Unit 426, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030-4009; phone: 713-834-6144; fax: 713-745-1163; . Jaffer A. Ajani, MD, Department of Gastrointestinal Medical Oncology, Unit 426, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030-4009; phone: 713-792-3685; fax: 713-792-8864;
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3
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Basset CA, Rappa F, Lentini VL, Barone R, Pitruzzella A, Unti E, Cappello F, Conway de Macario E, Macario AJL, Leone A. Hsp27 and Hsp60 in human submandibular salivary gland: Quantitative patterns in healthy and cancerous tissues with potential implications for differential diagnosis and carcinogenesis. Acta Histochem 2021; 123:151771. [PMID: 34419757 DOI: 10.1016/j.acthis.2021.151771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 08/10/2021] [Indexed: 11/17/2022]
Abstract
Tumors of the submandibular salivary gland (SMG) are uncommon but sufficiently frequent for the physician to consider them in routine examinations and for the pathologist to be prepared to differentiate them from other tissue abnormalities. However, scarcity of specimens makes training difficult, a situation compounded by the lack of accepted universal diagnostic guidelines. Furthermore, there is little information on the chaperone system (CS) of the gland, despite the increasing evidence of its participation in carcinogenesis as a biomarker for diagnosis and patient follow up, and in the mechanisms by which the tumor cells thrive. We are investigating this aspect of various tumors, and here we describe standardized methods for assessing the tissue levels of two chaperones, Hsp27 and Hsp60, in normal SMG and its tumors. We present illustrative results obtained with immunohistochemistry (IHC) and immunofluorescence-confocal microscopy (IF-CM), which we propose as a platform onto which a data base could be built by adding new information and which would provide material for developing guidelines for tumor identification and monitoring. The initial findings are encouraging in as much as the tumors surveyed showed quantitative patterns of Hsp27 and Hsp60 that distinguished tumoral from normal tissue and certain tumors from the others, and the results from IHC were confirmed by IF-CM.
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Affiliation(s)
- Charbel A Basset
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, Institute of Human Anatomy and Histology, University of Palermo, Palermo, Italy.
| | - Francesca Rappa
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, Institute of Human Anatomy and Histology, University of Palermo, Palermo, Italy.
| | | | - Rosario Barone
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, Institute of Human Anatomy and Histology, University of Palermo, Palermo, Italy.
| | - Alessandro Pitruzzella
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, Institute of Human Anatomy and Histology, University of Palermo, Palermo, Italy; Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy; Consorzio Universitario Di Caltanissetta, University of Palermo, Caltanissetta, Italy.
| | | | - Francesco Cappello
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, Institute of Human Anatomy and Histology, University of Palermo, Palermo, Italy; Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy; Department of Biology, College of Science and Technology, Temple University, Philadelphia, PA, USA.
| | - Everly Conway de Macario
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy; Department of Microbiology and Immunology, School of Medicine, University of Maryland at Baltimore-Institute of Marine and Environmental Technology (IMET), Baltimore, MD, USA.
| | - Alberto J L Macario
- Euro-Mediterranean Institute of Science and Technology (IEMEST), Palermo, Italy; Department of Microbiology and Immunology, School of Medicine, University of Maryland at Baltimore-Institute of Marine and Environmental Technology (IMET), Baltimore, MD, USA.
| | - Angelo Leone
- Department of Biomedicine, Neuroscience and Advanced Diagnostics, Institute of Human Anatomy and Histology, University of Palermo, Palermo, Italy.
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4
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Song S, Li Y, Xu Y, Ma L, Pool Pizzi M, Jin J, Scott AW, Huo L, Wang Y, Lee JH, Bhutani MS, Weston B, Shanbhag ND, Johnson RL, Ajani JA. Targeting Hippo coactivator YAP1 through BET bromodomain inhibition in esophageal adenocarcinoma. Mol Oncol 2020; 14:1410-1426. [PMID: 32175692 PMCID: PMC7266288 DOI: 10.1002/1878-0261.12667] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 02/13/2020] [Accepted: 03/12/2020] [Indexed: 12/11/2022] Open
Abstract
Hippo/YAP1 signaling is a major regulator of organ size, cancer stemness, and aggressive phenotype. Thus, targeting YAP1 may provide a novel therapeutic strategy for tumors with high YAP1 expression in esophageal cancer (EC). Chromatin immunoprecipitation (ChiP) and quantitative ChiP‐PCR were used to determine the regulation of the chromatin remodeling protein bromodomain‐containing protein 4 (BRD4) on YAP1. The role of the bromodomain and extraterminal motif (BET) inhibitor JQ1, an established BRD4 inhibitor, on inhibition of YAP1 in EC cells was dissected using western blot, immunofluorescence, qPCR, and transient transfection. The antitumor activities of BET inhibitor were further examined by variety of functional assays, cell proliferation (MTS), tumorsphere, and ALDH1+ labeling in vitro and in vivo. Here, we show that BRD4 regulates YAP1 expression and transcription. ChiP assays revealed that BRD4 directly occupies YAP1 promoter and that JQ1 robustly blocks BRD4 binding to the YAP1 promoter. Consequently, JQ1 strongly suppresses constitutive or induced YAP1 expression and transcription in EC cells and YAP1/Tead downstream transcriptional activity. Intriguingly, radiation‐resistant cells that acquire strong cancer stem cell traits and an aggressive phenotype can be effectively suppressed by JQ1 as assessed by cell proliferation, tumorsphere formation, and reduction in the ALDH1+ cells. Moreover, effects of JQ1 are synergistically amplified by the addition of docetaxel in vitro and in vivo. Our results demonstrate that BRD4 is a critical regulator of Hippo/YAP1 signaling and that BRD4 inhibitor JQ1 represents a new class of inhibitor of Hippo/YAP1 signaling, primarily targeting YAP1 high and therapy‐resistant cancer cells enriched with cancer stem cell properties.
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Affiliation(s)
- Shumei Song
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yuan Li
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yan Xu
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Lang Ma
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Melissa Pool Pizzi
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jiankang Jin
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ailing W Scott
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Longfei Huo
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ying Wang
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jeffrey H Lee
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Manoop S Bhutani
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Brian Weston
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Namita D Shanbhag
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Randy L Johnson
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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5
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Song S, Wang Z, Li Y, Ma L, Jin J, Scott AW, Xu Y, Estrella JS, Song Y, Liu B, Johnson RL, Ajani JA. PPARδ Interacts with the Hippo Coactivator YAP1 to Promote SOX9 Expression and Gastric Cancer Progression. Mol Cancer Res 2020; 18:390-402. [PMID: 31796534 DOI: 10.1158/1541-7786.mcr-19-0895] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 10/28/2019] [Accepted: 11/26/2019] [Indexed: 02/03/2023]
Abstract
Despite established functions of PPARδ in lipid metabolism and tumorigenesis, the mechanisms underlying its role in gastric cancer are undefined. Here, we demonstrate that SOX9 was dramatically induced by stably expressing PPARδ and by its agonist GW501516 in human gastric cancer cell lines. PPARδ knockdown in patient-derived gastric cancer cells dramatically reduced SOX9 expression and transcriptional activity, with corresponding decreases in invasion and tumor sphere formation. Mechanistically, PPARδ induced SOX9 transcription through direct interaction with and activation of the Hippo coactivator YAP1. PPARδ-YAP1 interaction occurred via the C-terminal domain of YAP1, and both TEAD- and PPARE-binding sites were required for SOX9 induction. Notably, CRISPR/Cas9-mediated genetic ablation of YAP1 or SOX9 abolished PPARδ-mediated oncogenic functions. Finally, expression of PPARδ, YAP1, and SOX9 were significantly correlated with each other and with poor survival in a large cohort of human gastric cancer tissues. Thus, these findings elucidate a novel mechanism by which PPARδ promotes gastric tumorigenesis through interaction with YAP1 and highlights the PPARδ/YAP1/SOX9 axis as a novel therapeutic target in human gastric cancer. IMPLICATIONS: Our discovery of a new model supports a distinct paradigm for PPARδ and a crucial oncogenic function of PPARδ in gastric cancer through convergence on YAP1/TEAD signaling. Therefore, PPARδ/YAP1/SOX9 axis could be a novel therapeutic target that can be translated into clinics.
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Affiliation(s)
- Shumei Song
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - Zhenning Wang
- Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang, P.R. China
| | - Yuan Li
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
- Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang, P.R. China
| | - Lang Ma
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jiankang Jin
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ailing W Scott
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Yan Xu
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
- Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang, P.R. China
| | | | - Yongxi Song
- Department of Surgical Oncology and General Surgery, First Hospital of China Medical University, Shenyang, P.R. China
| | - Bin Liu
- Department of Epigenetics and Molecular Carcinogenesis, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Randy L Johnson
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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6
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Hung CS, Huang CY, Hsu YW, Makondi PT, Chang WC, Chang YJ, Wang JY, Wei PL. HSPB1 rs2070804 polymorphism is associated with the depth of primary tumor. J Cell Biochem 2019; 121:63-69. [PMID: 31364192 DOI: 10.1002/jcb.28266] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 11/19/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND Colorectal cancer (CRC) is the third most common cancer in the world. Genome-wide association studies are a powerful method to analyze the status of single-nucleotide polymorphisms (SNPs) in specific genes. Heat shock proteins (HSPs) were found to be involved in the cancer progression and chemoresistance. However, there is still no further study about polymorphisms of HSP beta-1 (HSPB1) in colorectal cancer. We proposed the SNP of HSPB1 may be correlated with the progression and metastasis in colon cancer. METHODS We recruited 379 colorectal cancer patients and categorized as four stages following the UICC TNM system. Then, we selected tagging SNPs of HSPB1 by 10% minimum allelic frequency in Han Chinese population from the HapMap database and analyze with the Chi-square test. RESULTS We demonstrated the association of HSPB1 genetic polymorphisms rs2070804 with tumor depth with colorectal cancer. But, there is a lack of association between HSPB1 genetic polymorphisms and colorectal cancer invasion, recurrence or metastasis. CONCLUSIONS The polymorphisms of HSPB1 seemed to change the tumor behavior of colorectal cancer. HSPB1 rs2070804 polymorphism is associated with the depth of the primary tumor. But, there is no further correlation with other to the clinical parameters such as cancer invasiveness, local recurrence, or distant metastasis.
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Affiliation(s)
- Chin-Sheng Hung
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
| | - Chien-Yu Huang
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Division of General Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
| | - Yu-Wen Hsu
- School of Pharmacy, Taipei Medical University, Taipei, Taiwan
| | | | - Wei-Chiao Chang
- School of Pharmacy, Taipei Medical University, Taipei, Taiwan.,Master Program for Clinical Pharmacogenomics and Pharmacoproteomics, Taipei Medical University, Taipei, Taiwan
| | - Yu-Jia Chang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Jaw-Yuan Wang
- Division of Gastrointestinal and General Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Center for Biomarkers and Biotech Drugs, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Po-Li Wei
- Department of Surgery, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Division of Colorectal Surgery, Department of Surgery, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan.,Cancer Research Center and Translational Laboratory, Department of Medical Research, Taipei Medical University Hospital, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei, Taiwan
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7
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Söderström HK, Kauppi JT, Oksala N, Paavonen T, Krogerus L, Räsänen J, Rantanen T. Overexpression of HSP27 and HSP70 is associated with decreased survival among patients with esophageal adenocarcinoma. World J Clin Cases 2019; 7:260-269. [PMID: 30746368 PMCID: PMC6369396 DOI: 10.12998/wjcc.v7.i3.260] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 12/21/2018] [Accepted: 12/30/2018] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Overexpression of heat shock proteins (HSPs) is associated with several malignancies and contributes to the development, progression, and metastasis of cancer, in addition to the inhibition of cellular death. In recent years, there has been active research into using HSP inhibitors in several malignancies. Due to the poor prognosis of esophageal adenocarcinoma (EAC), it would be valuable to find new biomarkers for the development of cancer treatments.
AIM To evaluate the expressions of HSP27 and HSP70 and their effect on survival in EAC.
METHODS Immunohistochemical analyses and evaluations of HSP27 and HSP70 expression were performed on all available samples from 93 patients diagnosed with EAC between 1990 and 2007 at two university hospitals. Fifteen cases with Barrett’s metaplasia and 5 control cases from the same patient population were included in the analysis. HSP expression was quantitatively assessed and classified as high or low. Kaplan-Meier analyses and Cox regression models adjusting for age and sex as well as tumor site, stage, and grade were used to evaluate the effect on survival.
RESULTS Tumor stage and surgical treatment were the main prognostic factors. High HSP27 expression in cancer cases was a strong negative predictive factor, with a mean survival of 23 mo compared to the 49 mo in cases with a low expression (P = 0.018). The results were similar for HSP70, with a poorer survival of 17 mo in cases with high HSP70 expression, in contrast to 40 mo (P = 0.006) in cases with a low expression. A Cox regression survival analysis was performed, adjusting for possible confounding factors, and higher HSP27 and HSP70 expressions remained an independent negative prognostic factor. The HSPs’ correlation with survival was not affected by cancer treatments. When the analysis was adjusted for all factors, the odds ratios for HSP27 and HSP70 were 3.3 (CI: 1.6–6.6, P = 0.001) and 2.2 (CI: 1.2–3.9, P = 0.02), respectively.
CONCLUSION HSP27 and HSP70 overexpression is associated with poor survival in EAC, which is, to the best of our knowledge, reported for the first time.
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Affiliation(s)
- Henna K Söderström
- Department of General Thoracic Surgery, Helsinki University Central Hospital, Helsinki 00029, Finland
| | - Juha T Kauppi
- Department of General Thoracic Surgery, Helsinki University Central Hospital, Helsinki 00029, Finland
| | - Niku Oksala
- Faculty of Medicine and Life Sciences, University of Tampere, Tampere 33014, Finland
- Department of Vascular Surgery, Tampere University Hospital, Tampere 33520, Finland
| | - Timo Paavonen
- Department of Pathology, Fimlab Laboratories and Department of Medicine and Life Sciences, University of Tampere, Tampere 33520, Finland
| | - Leena Krogerus
- Department of Pathology, Helsinki University Central Hospital, 00029 Helsinki 00029, Finland
| | - Jari Räsänen
- Department of General Thoracic Surgery, Helsinki University Central Hospital, Helsinki 00029, Finland
| | - Tuomo Rantanen
- Department of Surgery, Kuopio University Hospital, Kuopio 70029, Finland
- Department of Surgery, Institute of Clinical Medicine, University of Eastern Finland, Kuopio 70029, Finland
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8
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Abstract
The technique of surface-enhanced laser desorption/ionization time-of-flight SELDI-TOF mass spectrometry could be used to establish serum or plasma proteomic profiles in esophageal adenocarcinoma. The protein profiles in patients may be used to predict survival and monitor response to chemotherapy in patients with esophageal adenocarcinoma. Here, a protocol for sample preparation from esophageal adenocarcinoma, analysis of proteomic profiles, and collection of protein fractions for identification of significant peaks is presented.
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9
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Li F, Xu Y, Liu B, Singh PK, Zhao W, Jin J, Han G, Scott AW, Dong X, Huo L, Ma L, Pizzi MP, Wang Y, Li Y, Harada K, Xie M, Skinner HD, Ding S, Wang L, Krishnan S, Johnson RL, Song S, Ajani JA. YAP1-Mediated CDK6 Activation Confers Radiation Resistance in Esophageal Cancer - Rationale for the Combination of YAP1 and CDK4/6 Inhibitors in Esophageal Cancer. Clin Cancer Res 2018; 25:2264-2277. [PMID: 30563933 DOI: 10.1158/1078-0432.ccr-18-1029] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Revised: 08/16/2018] [Accepted: 12/14/2018] [Indexed: 11/16/2022]
Abstract
PURPOSE Esophageal cancer is a lethal disease that is often resistant to therapy. Alterations of YAP1 and CDK6 are frequent in esophageal cancer. Deregulation of both molecules may be responsible for therapy resistance. EXPERIMENTAL DESIGN Expressions of YAP1 and CDK6 were examined in esophageal cancer cells and tissues using immunoblotting and immunohistochemistry. YAP1 expression was induced in esophageal cancer cells to examine YAP1-mediated CDK6 activation and its association with radiation resistance. Pharmacologic and genetic inhibitions of YAP1 and CDK6 were performed to dissect the mechanisms and assess the antitumor effects in vitro and in vivo. RESULTS YAP1 expression was positively associated with CDK6 expression in resistant esophageal cancer tissues and cell lines. YAP1 overexpression upregulated CDK6 expression and transcription, and promoted radiation resistance, whereas treatment with the YAP1 inhibitor, CA3, strongly suppressed YAP1 and CDK6 overexpression, reduced Rb phosphorylation, as well as sensitized radiation-resistant/YAP1high esophageal cancer cells to irradiation. CDK4/6 inhibitor, LEE011, and knock down of CDK6 dramatically inhibited expression of YAP1 and sensitized resistant esophageal cancer cells to irradiation indicating a positive feed-forward regulation of YAP1 by CDK6. In addition, suppression of both the YAP1 and CDK6 pathways by the combination of CA3 and LEE011 significantly reduced esophageal cancer cell growth and cancer stem cell population (ALDH1 + and CD133 + ), sensitized cells to irradiation, and showed a strong antitumor effect in vivo against radiation-resistant esophageal cancer cells. CONCLUSIONS Our results document that a positive crosstalk between the YAP1 and CDK6 pathways plays an important role in conferring radiation resistance to esophageal cancer cells. Targeting both YAP1 and CDK6 pathways could be a novel therapeutic strategy to overcome resistance in esophageal cancer.
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Affiliation(s)
- Fan Li
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas.,Department of General Surgery, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Yan Xu
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Bovey Liu
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Pankaj Kumar Singh
- Department of Radiation Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Wei Zhao
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Jiankang Jin
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Guangchun Han
- Department of Genomic Medicine, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Ailing W Scott
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Xiaochuan Dong
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Longfei Huo
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Lang Ma
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Melissa Pool Pizzi
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Ying Wang
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Yuan Li
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Kazuto Harada
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Min Xie
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California
| | - Heath D Skinner
- Department of Radiation Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Sheng Ding
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California
| | - Linghua Wang
- Department of Genomic Medicine, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Sunil Krishnan
- Department of Radiation Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Randy L Johnson
- Department of Cancer Biology, U.T.MD. Anderson Cancer Center, Houston, Texas
| | - Shumei Song
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas.
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, U.T.MD. Anderson Cancer Center, Houston, Texas.
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10
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Sundar S, Singh B. Understanding Leishmania parasites through proteomics and implications for the clinic. Expert Rev Proteomics 2018; 15:371-390. [PMID: 29717934 PMCID: PMC5970101 DOI: 10.1080/14789450.2018.1468754] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
INTRODUCTION Leishmania spp. are causative agents of leishmaniasis, a broad-spectrum neglected vector-borne disease. Genomic and transcriptional studies are not capable of solving intricate biological mysteries, leading to the emergence of proteomics, which can provide insights into the field of parasite biology and its interactions with the host. Areas covered: The combination of genomics and informatics with high throughput proteomics may improve our understanding of parasite biology and pathogenesis. This review analyses the roles of diverse proteomic technologies that facilitate our understanding of global protein profiles and definition of parasite development, survival, virulence and drug resistance mechanisms for disease intervention. Additionally, recent innovations in proteomics have provided insights concerning the drawbacks associated with conventional chemotherapeutic approaches and Leishmania biology, host-parasite interactions and the development of new therapeutic approaches. Expert commentary: With progressive breakthroughs in the foreseeable future, proteome profiles could provide target molecules for vaccine development and therapeutic intervention. Furthermore, proteomics, in combination with genomics and informatics, could facilitate the elimination of several diseases. Taken together, this review provides an outlook on developments in Leishmania proteomics and their clinical implications.
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Affiliation(s)
- Shyam Sundar
- a Department of Medicine, Institute of Medical Sciences , Banaras Hindu University , Varanasi , India
| | - Bhawana Singh
- a Department of Medicine, Institute of Medical Sciences , Banaras Hindu University , Varanasi , India
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11
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Ajani JA, Estrella JS, Chen Q, Correa AM, Ma L, Scott AW, Jin J, Liu B, Xie M, Sudo K, Shiozaki H, Badgwell B, Weston B, Lee JH, Bhutani MS, Onodera H, Suzuki K, Suzuki A, Ding S, Hofstetter WL, Johnson RL, Bresalier RS, Song S. Galectin-3 expression is prognostic in diffuse type gastric adenocarcinoma, confers aggressive phenotype, and can be targeted by YAP1/BET inhibitors. Br J Cancer 2018; 118:52-61. [PMID: 29136404 PMCID: PMC5765229 DOI: 10.1038/bjc.2017.388] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 08/24/2017] [Accepted: 10/04/2017] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Overexpression of Galectin-3 (Gal-3), a β-galactoside binding protein, has been noted in many tumour types but its functional significance and clinical utility in gastric adenocarcinoma (GAC) are not well known. METHODS We studied 184 GAC patients characterised by histologic grade, sub-phenotypes (diffuse vs intestinal), and ethnicity (Asians vs North Americans). Immunohistochemistry was performed to assess the expression of Gal-3 in human GACs and we correlated it to the clinical outcomes. Cell proliferation, invasion, co-immunoprecipitation and kinase activity assays were done in genetically stable Gal-3 overexpressing GC cell lines and the parental counterparts to delineate the mechanisms of action and activity of inhibitors. RESULTS Most patients were men, Asian, and had a poorly differentiated GAC. Gal-3 was over-expressed in poorly differentiated (P=0.002) tumours and also in diffuse sub-phenotype (P=0.02). Gal-3 overexpression was associated with shorter overall survival (OS; P=0.026) in all patients. Although, Gal-3 over-expression was not prognostic in the Asian cohort (P=0.337), it was highly prognostic in the North American cohort (P=0.001). In a multivariate analysis, Gal-3 (P=0.001) and N-stage (P=<0.001) were independently prognostic for shorter OS. Mechanistically, Gal-3 induced c-MYC expression through increasing RalA activity and an enhanced YAP1/RalA/RalBP complex to confer an aggressive phenotype. YAP1/BET bromodomain inhibitors reduced Gal-3-mediated aggressive phenotypes in GAC cells. CONCLUSIONS Gal-3 is an independent prognostic marker of shorter OS and a novel therapeutic target particularly in diffuse type GAC in North American patients.
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Affiliation(s)
- Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Jeannelyn S Estrella
- Department of Pathology, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Qiongrong Chen
- Department of Gastrointestinal Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Arlene M Correa
- Department of Thoracic and Cardiovascular Surgery, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Lang Ma
- Department of Gastrointestinal Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Ailing W Scott
- Department of Gastrointestinal Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Jiankang Jin
- Department of Gastrointestinal Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Bin Liu
- Department of Genetics, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Min Xie
- Department of Pharmaceuical Chemistry, University of California-San Francisco, San Francisco, CA 94158, USA
| | - Kazuki Sudo
- Department of Gastrointestinal Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Hironori Shiozaki
- Department of Gastrointestinal Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Brian Badgwell
- Department of Surgical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Brian Weston
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Jeffrey H Lee
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Manoop S Bhutani
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Hisashi Onodera
- Education Center, St. Luke's International University, Tokyo 104-8560, Japan
| | - Koyu Suzuki
- Department of Pathology, St. Luke's International Hospital, Tokyo 104-8560, Japan
| | - Akihiro Suzuki
- Department of Gastrointestinal Surgery, St. Luke's International Hospital, Tokyo 104-8560, Japan
| | - Sheng Ding
- Department of Pharmaceuical Chemistry, University of California-San Francisco, San Francisco, CA 94158, USA
| | - Wayne L Hofstetter
- Department of Thoracic and Cardiovascular Surgery, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Randy L Johnson
- Department of Cancer Biology, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Robert S Bresalier
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
| | - Shumei Song
- Department of Gastrointestinal Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
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12
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Song S, Xie M, Scott AW, Jin J, Ma L, Dong X, Skinner HD, Johnson RL, Ding S, Ajani JA. A Novel YAP1 Inhibitor Targets CSC-Enriched Radiation-Resistant Cells and Exerts Strong Antitumor Activity in Esophageal Adenocarcinoma. Mol Cancer Ther 2017; 17:443-454. [PMID: 29167315 DOI: 10.1158/1535-7163.mct-17-0560] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 09/13/2017] [Accepted: 11/16/2017] [Indexed: 01/21/2023]
Abstract
Mounting evidence suggests that the Hippo coactivator Yes-associated protein 1 (YAP1) is a major mediator of cancer stem cell (CSC) properties, tumor progression, and therapy resistance as well as often a terminal node of many oncogenic pathways. Thus, targeting YAP1 may be a novel therapeutic strategy for many types of tumors with high YAP1 expression, including esophageal adenocarcinoma. However, effective YAP1 inhibitors are currently lacking. Here, we identify a small molecule (CA3) that not only has remarkable inhibitory activity on YAP1/Tead transcriptional activity but also demonstrates strong inhibitory effects on esophageal adenocarcinoma cell growth especially on YAP1 high-expressing esophageal adenocarcinoma cells both in vitro and in vivo Remarkably, radiation-resistant cells acquire strong cancer stem cell (CSC) properties and aggressive phenotype, while CA3 can effectively suppress these phenotypes by inhibiting proliferation, inducing apoptosis, reducing tumor sphere formation, and reducing the fraction of ALDH1+ cells. Furthermore, CA3, combined with 5-FU, synergistically inhibits esophageal adenocarcinoma cell growth especially in YAP1 high esophageal adenocarcinoma cells. Taken together, these findings demonstrated that CA3 represents a new inhibitor of YAP1 and primarily targets YAP1 high and therapy-resistant esophageal adenocarcinoma cells endowed with CSC properties. Mol Cancer Ther; 17(2); 443-54. ©2017 AACR.
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Affiliation(s)
- Shumei Song
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - Min Xie
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California
| | - Ailing W Scott
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jiankang Jin
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Lang Ma
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Xiaochuan Dong
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Heath D Skinner
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Randy L Johnson
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Sheng Ding
- Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, California
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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13
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Wadhwa R, Wang X, Baladandayuthapani V, Liu B, Shiozaki H, Shimodaira Y, Lin Q, Elimova E, Hofstetter WL, Swisher SG, Rice DC, Maru DM, Kalhor N, Bhutani MS, Weston B, Lee JH, Skinner HD, Scott AW, Kaya DM, Harada K, Berry D, Song S, Ajani JA. Nuclear expression of Gli-1 is predictive of pathologic complete response to chemoradiation in trimodality treated oesophageal cancer patients. Br J Cancer 2017; 117:648-655. [PMID: 28728163 PMCID: PMC5572179 DOI: 10.1038/bjc.2017.225] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 06/15/2017] [Accepted: 06/21/2017] [Indexed: 02/07/2023] Open
Abstract
Background: Predictive biomarkers or signature(s) for oesophageal cancer (OC) patients undergoing preoperative therapy could help administration of effective therapy, avoidance of ineffective ones, and establishment new strategies. Since the hedgehog pathway is often upregulated in OC, we examined its transcriptional factor, Gli-1, which confers therapy resistance, we wanted to assess Gli-1 as a predictive biomarker for chemoradiation response and validate it. Methods: Untreated OC tissues from patients who underwent chemoradiation and surgery were assessed for nuclear Gli-1 by immunohistochemistry and labelling indices (LIs) were correlated with pathologic complete response (pathCR) or <pathCR (resistance) and validated in a unique cohort. Results: Initial 60 patients formed the discovery set (TDS) and then unique 167 patients formed the validation set (TVS). 16 (27%) patients in TDS and 40 (24%) patients in TVS achieved a pathCR. Nuclear Gli-1 LIs were highly associated with pathCR based on the fitted logistic regression models (P<0.0001) in TDS and TVS. The areas under the curve (AUCs) for receiver-operating characteristics (ROCs) based on a fitted model were 0.813 (fivefold cross validation (0.813) and bootstrap resampling (0.816) for TDS and 0.902 (fivefold cross validation (0.901) and bootstrap resampling (0.902)) for TVS. Our preclinical (including genetic knockdown) studies with FU or radiation resistant cell lines demonstrated that Gli-1 indeed mediates therapy resistance in OC. Conclusions: Our validated data in OC show that nuclear Gli-1 LIs are predictive of pathCR after chemoradiation with desirable sensitivity and specificity.
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Affiliation(s)
- Roopma Wadhwa
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Xuemei Wang
- Department of Biostatistics, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | | | - Bin Liu
- Department of Genetics, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Hironori Shiozaki
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Yusuke Shimodaira
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Quan Lin
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Elena Elimova
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Wayne L Hofstetter
- Department of Thoracic Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Stephen G Swisher
- Department of Thoracic Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - David C Rice
- Department of Thoracic Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Dipen M Maru
- Department of Pathology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Neda Kalhor
- Department of Pathology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Manoop S Bhutani
- Department of Gastroenterology, Hepatology, and Nutrition, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Brian Weston
- Department of Gastroenterology, Hepatology, and Nutrition, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Jeffrey H Lee
- Department of Gastroenterology, Hepatology, and Nutrition, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Heath D Skinner
- Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Ailing W Scott
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Dilsa Mizrak Kaya
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Kazuto Harada
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Donald Berry
- Department of Biostatistics, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Shumei Song
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston, TX 77030, USA
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14
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Fels Elliott DR, Perner J, Li X, Symmons MF, Verstak B, Eldridge M, Bower L, O’Donovan M, Gay NJ, Fitzgerald RC. Impact of mutations in Toll-like receptor pathway genes on esophageal carcinogenesis. PLoS Genet 2017; 13:e1006808. [PMID: 28531216 PMCID: PMC5460900 DOI: 10.1371/journal.pgen.1006808] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 06/06/2017] [Accepted: 05/09/2017] [Indexed: 12/25/2022] Open
Abstract
Esophageal adenocarcinoma (EAC) develops in an inflammatory microenvironment with reduced microbial diversity, but mechanisms for these influences remain poorly characterized. We hypothesized that mutations targeting the Toll-like receptor (TLR) pathway could disrupt innate immune signaling and promote a microenvironment that favors tumorigenesis. Through interrogating whole genome sequencing data from 171 EAC patients, we showed that non-synonymous mutations collectively affect the TLR pathway in 25/171 (14.6%, PathScan p = 8.7x10-5) tumors. TLR mutant cases were associated with more proximal tumors and metastatic disease, indicating possible clinical significance of these mutations. Only rare mutations were identified in adjacent Barrett's esophagus samples. We validated our findings in an external EAC dataset with non-synonymous TLR pathway mutations in 33/149 (22.1%, PathScan p = 0.05) tumors, and in other solid tumor types exposed to microbiomes in the COSMIC database (10,318 samples), including uterine endometrioid carcinoma (188/320, 58.8%), cutaneous melanoma (377/988, 38.2%), colorectal adenocarcinoma (402/1519, 26.5%), and stomach adenocarcinoma (151/579, 26.1%). TLR4 was the most frequently mutated gene with eleven mutations in 10/171 (5.8%) of EAC tumors. The TLR4 mutants E439G, S570I, F703C and R787H were confirmed to have impaired reactivity to bacterial lipopolysaccharide with marked reductions in signaling by luciferase reporter assays. Overall, our findings show that TLR pathway genes are recurrently mutated in EAC, and TLR4 mutations have decreased responsiveness to bacterial lipopolysaccharide and may play a role in disease pathogenesis in a subset of patients.
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Affiliation(s)
| | - Juliane Perner
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | - Xiaodun Li
- MRC Cancer Unit, Hutchison/MRC Research Centre, University of Cambridge, Cambridge, United Kingdom
| | - Martyn F. Symmons
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
| | - Brett Verstak
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
| | - Matthew Eldridge
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | - Lawrence Bower
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, United Kingdom
| | - Maria O’Donovan
- Department of Histopathology, Cambridge University Hospital NHS Trust, Cambridge, United Kingdom
| | - Nick J. Gay
- Department of Biochemistry, University of Cambridge, Cambridge, United Kingdom
| | | | - Rebecca C. Fitzgerald
- MRC Cancer Unit, Hutchison/MRC Research Centre, University of Cambridge, Cambridge, United Kingdom
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15
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O'Neill JR, Pak HS, Pairo-Castineira E, Save V, Paterson-Brown S, Nenutil R, Vojtěšek B, Overton I, Scherl A, Hupp TR. Quantitative Shotgun Proteomics Unveils Candidate Novel Esophageal Adenocarcinoma (EAC)-specific Proteins. Mol Cell Proteomics 2017; 16:1138-1150. [PMID: 28336725 PMCID: PMC5461543 DOI: 10.1074/mcp.m116.065078] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Revised: 02/26/2017] [Indexed: 12/11/2022] Open
Abstract
Esophageal cancer is the eighth most common cancer worldwide and the majority of patients have systemic disease at presentation. Esophageal adenocarcinoma (OAC), the predominant subtype in western countries, is largely resistant to current chemotherapy regimens. Selective markers are needed to enhance clinical staging and to allow targeted therapies yet there are minimal proteomic data on this cancer type. After histological review, lysates from OAC and matched normal esophageal and gastric samples from seven patients were subjected to LC MS/MS after tandem mass tag labeling and OFFGEL fractionation. Patient matched samples of OAC, normal esophagus, normal stomach, lymph node metastases and uninvolved lymph nodes were used from an additional 115 patients for verification of expression by immunohistochemistry (IHC). Over six thousand proteins were identified and quantified across samples. Quantitative reproducibility was excellent between technical replicates and a moderate correlation was seen across samples with the same histology. The quantitative accuracy was verified across the dynamic range for seven proteins by immunohistochemistry (IHC) on the originating tissues. Multiple novel tumor-specific candidates are proposed and EPCAM was verified by IHC. This shotgun proteomic study of OAC used a comparative quantitative approach to reveal proteins highly expressed in specific tissue types. Novel tumor-specific proteins are proposed and EPCAM was demonstrated to be specifically overexpressed in primary tumors and lymph node metastases compared with surrounding normal tissues. This candidate and others proposed in this study could be developed as tumor-specific targets for novel clinical staging and therapeutic approaches.
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Affiliation(s)
- J Robert O'Neill
- From the ‡Edinburgh Cancer Research Centre at the Institute of Genetics and Molecular Medicine, Edinburgh University; Robert.o'.,§Department of Surgery, Royal Infirmary of Edinburgh
| | - Hui-Song Pak
- ¶Department of Human Protein Sciences, Faculty of Medicine, University of Geneva
| | - Erola Pairo-Castineira
- ‖Centre for Medical Informatics, Usher Institute of Population Health Sciences and Informatics, University of Edinburgh.,**MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, Edinburgh University
| | - Vicki Save
- ‡‡Department of Pathology, Royal Infirmary of Edinburgh
| | | | - Rudolf Nenutil
- §§Regional Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, Brno
| | - Bořivoj Vojtěšek
- §§Regional Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, Brno
| | - Ian Overton
- ‖Centre for Medical Informatics, Usher Institute of Population Health Sciences and Informatics, University of Edinburgh.,**MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, Edinburgh University
| | - Alex Scherl
- ¶Department of Human Protein Sciences, Faculty of Medicine, University of Geneva
| | - Ted R Hupp
- From the ‡Edinburgh Cancer Research Centre at the Institute of Genetics and Molecular Medicine, Edinburgh University.,§§Regional Centre for Applied Molecular Oncology, Masaryk Memorial Cancer Institute, Brno
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16
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Yang Z, Liu C, Zheng W, Teng X, Li S. The Functions of Antioxidants and Heat Shock Proteins Are Altered in the Immune Organs of Selenium-Deficient Broiler Chickens. Biol Trace Elem Res 2016; 169:341-51. [PMID: 26123162 DOI: 10.1007/s12011-015-0407-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 06/10/2015] [Indexed: 10/23/2022]
Abstract
Despite increasing evidence indicating the essential involvement of selenium (Se) in the immune system, the effect of Se deficiency on the regulation of oxidative stress and heat shock proteins (Hsps) in broiler chickens is still unclear. In the present study, we established an exudative diathesis (ED) broiler chicken model caused by Se deficiency. We then analyzed histological observations and detected the expression levels of Hsps and antioxidant indexes in immune tissues. The antioxidant function declined remarkably, and most of the Hsp expression levels increased significantly in the spleen, thymus, and bursa of Fabricius of the broiler chicks with ED (except the messenger RNA (mRNA) levels of Hsp27, Hsp40, and Hsp70, which decreased in thymus tissues from the treatment groups); therefore, constitutive oxidation resistance and higher Hsps in broiler chicks with ED caused defects in immune organ morphology and function, as evidenced by abnormal histological structures: red pulp broadening and lymphocytes in the cortex and medulla of the thymic lobule decreased distinctly and distributed loosely. These results underscore the importance of Se in establishing an immune organ microenvironment conducive to normal function.
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Affiliation(s)
- Zijiang Yang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Ci Liu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Weijia Zheng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China
| | - Xiaohua Teng
- College of Animal Science and Technology, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
| | - Shu Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin, 150030, People's Republic of China.
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17
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Qumseya BJ, Wolfsen HC. Endoscopic therapy for Barrett's esophagus: our experience beyond white men. Gastrointest Endosc 2015; 82:285-6. [PMID: 26183491 DOI: 10.1016/j.gie.2015.02.051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 02/27/2015] [Indexed: 02/08/2023]
Affiliation(s)
- Bashar J Qumseya
- Division of Gastroenterology and Hepatology, Archbold Memorial Hospital, Thomasville, Georgia
| | - Herbert C Wolfsen
- Division of Gastroenterology and Hepatology, Mayo Clinic Florida, Jacksonville, Florida, USA
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18
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Song S, Honjo S, Jin J, Chang SS, Scott AW, Chen Q, Kalhor N, Correa AM, Hofstetter WL, Albarracin CT, Wu TT, Johnson RL, Hung MC, Ajani JA. The Hippo Coactivator YAP1 Mediates EGFR Overexpression and Confers Chemoresistance in Esophageal Cancer. Clin Cancer Res 2015; 21:2580-90. [PMID: 25739674 DOI: 10.1158/1078-0432.ccr-14-2191] [Citation(s) in RCA: 185] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 02/13/2015] [Indexed: 01/12/2023]
Abstract
PURPOSE Esophageal cancer is an aggressive malignancy and often resistant to therapy. Overexpression of EGFR has been associated with poor prognosis of patients with esophageal cancer. However, clinical trials using EGFR inhibitors have not provided benefit for patients with esophageal cancer. Failure of EGFR inhibition may be due to crosstalk with other oncogenic pathways. EXPERIMENTAL DESIGN In this study, expression of YAP1 and EGFR were examined in EAC-resistant tumor tissues versus sensitive tissues by IHC. Western blot analysis, immunofluorescence, real-time PCR, promoter analysis, site-directed mutagenesis, and in vitro and in vivo functional assays were performed to elucidate the YAP1-mediated EGFR expression and transcription and the relationship with chemoresistance in esophageal cancer. RESULTS We demonstrate that Hippo pathway coactivator YAP1 can induce EGFR expression and transcription in multiple cell systems. Both YAP1 and EGFR are overexpressed in resistant esophageal cancer tissues compared with sensitive esophageal cancer tissues. Furthermore, we found that YAP1 increases EGFR expression at the level of transcription requiring an intact TEAD-binding site in the EGFR promoter. Most importantly, exogenous induction of YAP1 induces resistance to 5-fluorouracil and docetaxcel, whereas knockdown of YAP1 sensitizes esophageal cancer cells to these cytotoxics. Verteporfin, a YAP1 inhibitor, effectively inhibits both YAP1 and EGFR expression and sensitizes cells to cytotoxics. CONCLUSIONS Our data provide evidence that YAP1 upregulation of EGFR plays an important role in conferring therapy resistance in esophageal cancer cells. Targeting YAP1-EGFR axis may be more efficacious than targeting EGFR alone in esophageal cancer.
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Affiliation(s)
- Shumei Song
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - Soichiro Honjo
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jiankang Jin
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Shih-Shin Chang
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ailing W Scott
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Qiongrong Chen
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Neda Kalhor
- Department of Pathology, MD Anderson Cancer Center, The University of Texas, Houston, Texas
| | - Arlene M Correa
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Wayne L Hofstetter
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Constance T Albarracin
- Department of Pathology, MD Anderson Cancer Center, The University of Texas, Houston, Texas
| | - Tsung-Teh Wu
- Department of Pathology, Mayo Clinic, Rochester, Minnesota
| | - Randy L Johnson
- Department of Biochemistry and Molecular Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas. Center for Molecular Medicine and Graduate Institute of Cancer Biology, China Medical University, Taichung, Taiwan
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
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Hsp27 (HSPB1) differential expression in normal salivary glands and pleomorphic adenomas and association with an increased Bcl2/Bax ratio. Tumour Biol 2014; 36:213-7. [PMID: 25230790 DOI: 10.1007/s13277-014-2634-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Accepted: 09/11/2014] [Indexed: 10/24/2022] Open
Abstract
Pleomorphic adenoma (PA) is the most common salivary gland neoplasm. The Hsp27 (HSPB1) is an antiapoptotic protein whose synthesis follows cytotoxic stresses and result in a transient increase in tolerance to subsequent cell injury. Although Hsp27 is expressed in a range of normal tissues and neoplasms, a wide variation in its expression exists among different cells and tissues types. In certain tumours of glandular origin (such as oesophageal adenocarcinomas), the level of Hsp27 is decreased. In the present study, Hsp27 protein levels were evaluated by enzyme-linked immunosorbent assay (ELISA) in a set of 18 fresh PA and 12 normal salivary gland samples. In addition, we tested if Hsp27 protein levels correlated with p53 expression and cell proliferation index, as well as with the transcriptional levels of Bcl-2-associated X protein (BAX), B cell lymphoma 2 (BCL2) and Caspase 3 in PA. We further tested the association between Hsp27 expression and PA tumour size. While all normal salivary gland samples expressed Hsp27 protein, only half of the PA samples expressed it, resulting in a reduced expression of Hsp27 in PA when compared with normal salivary glands (P = 0.003). The expression levels of this protein correlated positively with a higher messenger ribonucleic acid (mRNA) ratio of Bcl2/Bax (R = 0.631; P = 0.01). In conclusion, a decreased Hsp27 protein expression level in PA was found. In addition, Hsp27 levels correlated positively with the Bcl2/Bax mRNA ratio, suggesting an antiapoptotic effect.
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20
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Song S, Ajani JA, Honjo S, Maru DM, Chen Q, Scott AW, Heallen TR, Xiao L, Hofstetter WL, Weston B, Lee JH, Wadhwa R, Sudo K, Stroehlein JR, Martin JF, Hung MC, Johnson RL. Hippo coactivator YAP1 upregulates SOX9 and endows esophageal cancer cells with stem-like properties. Cancer Res 2014; 74:4170-82. [PMID: 24906622 DOI: 10.1158/0008-5472.can-13-3569] [Citation(s) in RCA: 205] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Cancer stem cells (CSC) are purported to initiate and maintain tumor growth. Deregulation of normal stem cell signaling may lead to the generation of CSCs; however, the molecular determinants of this process remain poorly understood. Here we show that the transcriptional coactivator YAP1 is a major determinant of CSC properties in nontransformed cells and in esophageal cancer cells by direct upregulation of SOX9. YAP1 regulates the transcription of SOX9 through a conserved TEAD binding site in the SOX9 promoter. Expression of exogenous YAP1 in vitro or inhibition of its upstream negative regulators in vivo results in elevated SOX9 expression accompanied by the acquisition of CSC properties. Conversely, shRNA-mediated knockdown of YAP1 or SOX9 in transformed cells attenuates CSC phenotypes in vitro and tumorigenicity in vivo. The small-molecule inhibitor of YAP1, verteporfin, significantly blocks CSC properties in cells with high YAP1 and a high proportion of ALDH1(+). Our findings identify YAP1-driven SOX9 expression as a critical event in the acquisition of CSC properties, suggesting that YAP1 inhibition may offer an effective means of therapeutically targeting the CSC population.
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Affiliation(s)
- Shumei Song
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Soichiro Honjo
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Dipen M Maru
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Qiongrong Chen
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Ailing W Scott
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Todd R Heallen
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, Texas
| | - Lianchun Xiao
- Department of Biostatistics, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Wayne L Hofstetter
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Brian Weston
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Jeffrey H Lee
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Roopma Wadhwa
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Kazuki Sudo
- Department of Gastrointestinal Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - John R Stroehlein
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - James F Martin
- Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, Texas
| | - Mien-Chie Hung
- Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Randy L Johnson
- Department of Biochemistry and Molecular Biology, The University of Texas MD Anderson Cancer Center, Houston, Texas
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Honjo S, Ajani JA, Scott AW, Chen Q, Skinner HD, Stroehlein J, Johnson RL, Song S. Metformin sensitizes chemotherapy by targeting cancer stem cells and the mTOR pathway in esophageal cancer. Int J Oncol 2014; 45:567-74. [PMID: 24859412 PMCID: PMC4091970 DOI: 10.3892/ijo.2014.2450] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Accepted: 01/27/2014] [Indexed: 12/16/2022] Open
Abstract
Our clinical study indicates esophageal adenocarcinoma patients on metformin had a better treatment response than those without metformin. However, the effects of metformin and the mechanisms of its action in esophageal cancer (EC) are unclear. EC cell lines were used to assess the effects of metformin alone or in combination with 5-fluorouracil on survival and apoptosis. RPPA proteomic array and immunoblots were used to identify signaling affected by metformin. Standard descriptive statistical methods were used. Reduction in cell survival and induction of apoptosis by metformin were observed in several EC cell lines. The use of metformin in combination with 5-FU significantly sensitized EC cells to the cytotoxic effect of 5-FU. RPPA array demonstrated that metformin decreased various oncogenes including PI3K/mTORsignaling and survival/cancer stem cell-related genes in cells treated with metformin compared with its control. Immunoblots and transcriptional analyses further confirm that metformin downregulated these CSC-related genes and the components of the mTOR pathway in a dose-dependent manner. Sorted ALDH-1+ cell tumor sphere forming capacity was preferentially reduced by metformin. Finally, metformin reduced tumor growth in vivo and when combined with FU, there was synergistic reduction in tumor growth. Metformin inhibits EC cell growth and sensitizes EC cells to 5-FU cytotoxic effects by targeting CSCs and the components of mTOR. The present study supports our previous clinical observations that the use of metformin is beneficial to EC patients. Metformin can complement other therapeutic combinations to effectively treat EC patients.
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Affiliation(s)
- Soichiro Honjo
- Department of Gastrointestinal Medical Oncology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Jaffer A Ajani
- Department of Gastrointestinal Medical Oncology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Ailing W Scott
- Department of Gastrointestinal Medical Oncology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Qiongrong Chen
- Department of Gastrointestinal Medical Oncology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Heath D Skinner
- Department of Radiation Oncology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - John Stroehlein
- Department of Gastroenterology, Hepatology and Nutrition, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Randy L Johnson
- Department of Biochemistry and Molecular Biology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
| | - Shumei Song
- Department of Gastrointestinal Medical Oncology, University of Texas M.D. Anderson Cancer Center, Houston, TX, USA
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Ginkgo biloba extract decreases non-small cell lung cancer cell migration by downregulating metastasis-associated factor heat-shock protein 27. PLoS One 2014; 9:e91331. [PMID: 24618684 PMCID: PMC3950153 DOI: 10.1371/journal.pone.0091331] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 02/09/2014] [Indexed: 02/05/2023] Open
Abstract
Heat-shock proteins (HSPs) are molecular chaperones that protect proteins from damage. HSP27 expression is associated with cancer transformation and invasion. Ginkgo biloba extract (EGb761), the most widely sold herbal supplement, has antiangiogenic effects and induces tumor apoptosis. Data regarding the effect of EGb761 on HSP expression is limited, particularly in cancer. HSP27 expression in paired tumors and normal lung tissues of 64 patients with non-small cell lung cancer (NSCLC) were detected by real-time PCR, western blotting, and immunohistochemistry. NSCLC cell lines (A549/H441) were used to examine the migratory abilities in vitro. NSCLC tissue showed higher HSP27 expression than normal lung tissue. Kaplan–Meier survival analysis showed that NSCLC patients with low HSP27 expression ratio (<1) had significantly longer survival time than those with a high expression ratio (>1) (p = 0.04). EGb761 inhibited HSP27 expression and migratory ability of A549/H441 cells, which is the same as HSP27-siRNA transfection effect. Moreover, EGb761 treatment activated the AKT and p38 pathways and did not affect the expression of PI3K, ERK, and JNK pathways. HSP27 is a poor prognostic indicator of NSCLC. EGb761 can decrease the migration ability of A549/H441 by inhibiting HSP27 expression most likely through AKT and p38 MAPK pathways activation.
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23
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Zhang Q, Yu C, Peng S, Xu H, Wright E, Zhang X, Huo X, Cheng E, Pham TH, Asanuma K, Hatanpaa KJ, Rezai D, Wang DH, Sarode V, Melton S, Genta RM, Spechler SJ, Souza RF. Autocrine VEGF signaling promotes proliferation of neoplastic Barrett's epithelial cells through a PLC-dependent pathway. Gastroenterology 2014; 146:461-72.e6. [PMID: 24120473 PMCID: PMC3899829 DOI: 10.1053/j.gastro.2013.10.011] [Citation(s) in RCA: 40] [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: 12/03/2012] [Revised: 10/03/2013] [Accepted: 10/03/2013] [Indexed: 12/11/2022]
Abstract
BACKGROUND & AIMS Tumor cells express vascular endothelial growth factor (VEGF), which induces angiogenesis. VEGF also activates VEGF receptors (VEGFRs) on or within tumor cells to promote their proliferation in an autocrine fashion. We studied the mechanisms of autocrine VEGF signaling in Barrett's esophagus cells. METHODS Using Barrett's epithelial cell lines, we measured VEGF and VEGFR messenger RNA and protein, and studied the effects of VEGF signaling on cell proliferation and VEGF secretion. We studied the effects of inhibiting factors in this pathway on levels of phosphorylated phospholipase Cγ1 (PLCG1), protein kinase C, and extracellular signal-regulated kinases (ERK)1/2. We performed immunohistochemical analysis of phosphorylated VEGFR2 on esophageal adenocarcinoma tissues. We studied effects of sunitinib, a VEGFR2 inhibitor, on proliferation of neoplastic cells and growth of xenograft tumors in mice. RESULTS Neoplastic and non-neoplastic Barrett's cells expressed VEGF and VEGFR2 messenger RNA and protein, with higher levels in neoplastic cells. Incubation with recombinant human VEGF significantly increased secretion of VEGF protein and cell number; knockdown of PLCG1 markedly reduced the recombinant human VEGF-stimulated increase in levels of phosphorylated PLCG1 and phosphorylated ERK1/2 in neoplastic cells. Esophageal adenocarcinoma tissues showed immunostaining for phosphorylated VEGFR2. Sunitinib inhibited VEGF signaling in neoplastic cells and reduced weight and volume of xenograft tumors in mice. CONCLUSIONS Neoplastic and non-neoplastic Barrett's epithelial cells have autocrine VEGF signaling. In neoplastic Barrett's cells, VEGF activation of VEGFR2 initiates a PLCG1-protein kinase C-ERK pathway that promotes proliferation and is self-sustaining (by causing more VEGF production). Strategies to reduce autocrine VEGF signaling (eg, with sunitinib) might be used to prevent or treat cancer in patients with Barrett's esophagus.
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Affiliation(s)
- Qiuyang Zhang
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Internal Medicine, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas
| | - Chunhua Yu
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Internal Medicine, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas
| | - Sui Peng
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Internal Medicine, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Division of Gastroenterology and Hepatology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Hao Xu
- Department of Internal Medicine, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas
| | - Ellen Wright
- Department of Research and Development, VA North Texas Heath Care System, Dallas, Texas
| | - Xi Zhang
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Internal Medicine, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas
| | - Xiaofang Huo
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Internal Medicine, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas
| | - Edaire Cheng
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Internal Medicine, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Pediatrics, Children's Medical Center, Dallas, Texas
| | - Thai H Pham
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Surgery, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas
| | - Kiyotaka Asanuma
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Internal Medicine, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas
| | - Kimmo J Hatanpaa
- Department of Pathology, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas
| | - Davood Rezai
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Research and Development, VA North Texas Heath Care System, Dallas, Texas
| | - David H Wang
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Internal Medicine, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Venetia Sarode
- Department of Pathology, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas
| | - Shelby Melton
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Pathology, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas
| | - Robert M Genta
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Pathology, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Miraca Life Sciences, Inc., Irving, Texas
| | - Stuart J Spechler
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Internal Medicine, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Rhonda F Souza
- Center for Esophageal Diseases, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Department of Internal Medicine, VA North Texas Health Care System and the University of Texas Southwestern Medical School, Dallas, Texas; Harold C. Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, Texas.
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24
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Ajani JA, Wang X, Song S, Suzuki A, Taketa T, Sudo K, Wadhwa R, Hofstetter WL, Komaki R, Maru DM, Lee JH, Bhutani MS, Weston B, Baladandayuthapani V, Yao Y, Honjo S, Scott AW, Skinner HD, Johnson RL, Berry D. ALDH-1 expression levels predict response or resistance to preoperative chemoradiation in resectable esophageal cancer patients. Mol Oncol 2013; 8:142-9. [PMID: 24210755 DOI: 10.1016/j.molonc.2013.10.007] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 10/14/2013] [Accepted: 10/15/2013] [Indexed: 01/16/2023] Open
Abstract
PURPOSE Operable thoracic esophageal/gastroesophageal junction carcinoma (EC) is often treated with chemoradiation and surgery but tumor responses are unpredictable and heterogeneous. We hypothesized that aldehyde dehydrogenase-1 (ALDH-1) could be associated with response. METHODS The labeling indices (LIs) of ALDH-1 by immunohistochemistry in untreated tumor specimens were established in EC patients who had chemoradiation and surgery. Univariate logistic regression and 3-fold cross validation were carried out for the training (67% of patients) and validation (33%) sets. Non-clinical experiments in EC cells were performed to generate complimentary data. RESULTS Of 167 EC patients analyzed, 40 (24%) had a pathologic complete response (pathCR) and 27 (16%) had an extremely resistant (exCRTR) cancer. The median ALDH-1 LI was 0.2 (range, 0.01-0.85). There was a significant association between pathCR and low ALDH-1 LI (p ≤ 0.001; odds-ratio [OR] = 0.432). The 3-fold cross validation led to a concordance index (C-index) of 0.798 for the fitted model. There was a significant association between exCRTR and high ALDH-1 LI (p ≤ 0.001; OR = 3.782). The 3-fold cross validation led to the C-index of 0.960 for the fitted model. In several cell lines, higher ALDH-1 LIs correlated with resistant/aggressive phenotype. Cells with induced chemotherapy resistance upregulated ALDH-1 and resistance conferring genes (SOX9 and YAP1). Sorted ALDH-1+ cells were more resistant and had an aggressive phenotype in tumor spheres than ALDH-1- cells. CONCLUSIONS Our clinical and non-clinical data demonstrate that ALDH-1 LIs are predictive of response to therapy and further research could lead to individualized therapeutic strategies and novel therapeutic targets for EC patients.
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Affiliation(s)
- J A Ajani
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA.
| | - X Wang
- Department of Biostatistics, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - S Song
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - A Suzuki
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - T Taketa
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - K Sudo
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - R Wadhwa
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - W L Hofstetter
- Department of Cardiac and Thoracic Surgery, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - R Komaki
- Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - D M Maru
- Department of Pathology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - J H Lee
- Department of Gastroenterology, Hepatology, and Nutrition, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - M S Bhutani
- Department of Gastroenterology, Hepatology, and Nutrition, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - B Weston
- Department of Gastroenterology, Hepatology, and Nutrition, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - V Baladandayuthapani
- Department of Biostatistics, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - Y Yao
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - S Honjo
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - A W Scott
- Department of Gastrointestinal Medical Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - H D Skinner
- Department of Radiation Oncology, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - R L Johnson
- Department of Genetics, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
| | - D Berry
- Department of Biostatistics, University of Texas M. D. Anderson Cancer Center, 1515 Holcombe Blvd, Houston 77030, USA
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Paterson AL, Shannon NB, Lao-Sirieix P, Ong CAJ, Peters CJ, O'Donovan M, Fitzgerald RC. A systematic approach to therapeutic target selection in oesophago-gastric cancer. Gut 2013; 62:1415-24. [PMID: 22773546 DOI: 10.1136/gutjnl-2012-302039] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE The success of personalised therapy depends on identification and inhibition of the oncogene(s) on which that tumour is dependent. We aimed to determine whether a receptor tyrosine kinase (RTK) array could be used to select the most effective therapeutic strategies in molecularly heterogeneous oesophago-gastric adenocarcinomas. DESIGN Gene expression profiling from oesophago-gastric tumours (n=75) and preinvasive stages (n=57) identified the active signalling pathways, which was confirmed using immunohistochemistry (n=434). RTK arrays on a cell line panel (n=14) determined therapeutic targets for in vitro cytotoxic testing. Feasibility of this personalised approach was tested in tumour samples (n=46). RESULTS MAPK was the most frequently activated pathway (32/75 samples (42.7%)) with progressive enrichment in preinvasive disease stages (p<0.05) and ERK phosphorylation in 148/434 (34.3%) independent samples. Cell lines displayed a range of RTK activation profiles. When no RTKs were activated, tyrosine kinase inhibitors (TKIs) and a Mek inhibitor were not useful (MKN1). In lines with a dominant phosphorylated RTK (OE19, MKN45 and KATOIII), selection of this TKI or Mek in nM concentrations induced cytotoxicity and inhibited Erk and Akt phosphorylation. In cells lines with complex activation profiles (HSC39 and OE33), a combination of TKIs or Mek inhibition (in nM concentrations) was necessary for cytotoxicity and inhibition of Erk and Akt phosphorylation. Human tumours demonstrated diverse activation profiles and 65% of cases had two or more active RTKs. CONCLUSIONS The MAPK pathway is commonly activated in oesophago-gastric cancer following activation of a variety of RTKs. Molecular phenotyping can inform a rational choice of targeted therapy.
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Affiliation(s)
- Anna L Paterson
- MRC Cancer Cell Unit, Hutchison-MRC Research Centre, Cambridge, UK
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26
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Song S, Maru DM, Ajani JA, Chan CH, Honjo S, Lin HK, Correa A, Hofstetter WL, Davila M, Stroehlein J, Mishra L. Loss of TGF-β adaptor β2SP activates notch signaling and SOX9 expression in esophageal adenocarcinoma. Cancer Res 2013; 73:2159-69. [PMID: 23536563 DOI: 10.1158/0008-5472.can-12-1962] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
TGF-β and Notch signaling pathways play important roles in regulating self-renewal of stem cells and gastrointestinal carcinogenesis. Loss of TGF-β signaling components activates Notch signaling in esophageal adenocarcinoma, but the basis for this effect has been unclear. Here we report that loss of TGF-β adapter β2SP (SPNB2) activates Notch signaling and its target SOX9 in primary fibroblasts or esophageal adenocarcinoma cells. Expression of the stem cell marker SOX9 was markedly higher in esophageal adenocarcinoma tumor tissues than normal tissues, and its higher nuclear staining in tumors correlated with poorer survival and lymph node invasion in esophageal adenocarcinoma patients. Downregulation of β2SP by lentivirus short hairpin RNA increased SOX9 transcription and expression, enhancing nuclear localization for both active Notch1 (intracellular Notch1, ICN1) and SOX9. In contrast, reintroduction into esophageal adenocarcinoma cells of β2SP and a dominant-negative mutant of the Notch coactivator mastermind-like (dnMAN) decreased SOX9 promoter activity. Tumor sphere formation and invasive capacity in vitro and tumor growth in vivo were increased in β2SP-silenced esophageal adenocarcinoma cells. Conversely, SOX9 silencing rescued the phenotype of esophageal adenocarcinoma cells with loss of β2SP. Interaction between Smad3 and ICN1 via Smad3 MH1 domain was also observed, with loss of β2SP increasing the binding between these proteins, inducing expression of Notch targets SOX9 and C-MYC, and decreasing expression of TGF-β targets p21(CDKN1A), p27 (CDKN1B), and E-cadherin. Taken together, our findings suggest that loss of β2SP switches TGF-β signaling from tumor suppression to tumor promotion by engaging Notch signaling and activating SOX9.
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Affiliation(s)
- Shumei Song
- Department of Gastroenterology, Hepatology & Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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Zhang RG, Wang CS, Gao CF. Prevalence and pathogenesis of Barrett's esophagus in Luoyang, China. Asian Pac J Cancer Prev 2013; 13:2185-91. [PMID: 22901192 DOI: 10.7314/apjcp.2012.13.5.2185] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Prevalence of Barrett's esophagus (BE) in Luoyang, China, has not been reported, and its pathogenesis is controversial. The aim of this study was therefore to investigate the prevalence of BE and its underlying factors in the city of Luoyang. METHOD This was a prospective study in one center. Many patients were analyzed using endoscopy who showed upper gastrointestinal symptoms between August 2006 and June 2007. In addition, the effect of apoptosis-related proteins and heat shock proteins upon BE's pathogenesis were also investigated by an immunohistochemical protocol. RESULTS Prevalence of BE was at 4.55% and the mean age of those affected was about 10 years older than for esophagitis. Typical reflux symptoms were significantly lower than with esophagitis, whereas signs of caspase-3 and HSP105 elevation were significantly higher. Expression of TERT, HSP70 and HSP90α in BE cases was significantly lower than in esophagitis. However, there was no statistical difference between the two groups in expression of HSP27. CONCLUSIONS The prevalence of BE is high in Luoyang, which could result from esophagitis despite typical reflux symptoms being relatively uncommon. Initiation and development of BE might be the result of accelerated proliferation, apoptosis and differentiation of original cells to intestinal epithelium.
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Affiliation(s)
- Ru-Gang Zhang
- Department of Gastroenterology and Hepatology, Chinese PLA General Hospital, Beijing, China.
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Schäfer C, Seeliger H, Bader DC, Assmann G, Buchner D, Guo Y, Ziesch A, Palagyi A, Ochs S, Laubender RP, Jung A, De Toni EN, Kirchner T, Göke B, Bruns C, Gallmeier E. Heat shock protein 27 as a prognostic and predictive biomarker in pancreatic ductal adenocarcinoma. J Cell Mol Med 2012; 16:1776-91. [PMID: 22004109 PMCID: PMC3822691 DOI: 10.1111/j.1582-4934.2011.01473.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
A role of heat shock protein 27 (HSP27) as a potential biomarker has been reported in various tumour entities, but comprehensive studies in pancreatic cancer are lacking. Applying tissue microarray (TMA) analysis, we correlated HSP27 protein expression status with clinicopathologic parameters in pancreatic ductal adenocarcinoma specimens from 86 patients. Complementary, we established HSP27 overexpression and RNA-interference models to assess the impact of HSP27 on chemo- and radiosensitivity directly in pancreatic cancer cells. In the TMA study, HSP27 expression was found in 49% of tumour samples. Applying univariate analyses, a significant correlation was found between HSP27 expression and survival. In the multivariate Cox-regression model, HSP27 expression emerged as an independent prognostic factor. HSP27 expression also correlated inversely with nuclear p53 accumulation, indicating either protein interactions between HSP27 and p53 or TP53 mutation-dependent HSP27-regulation in pancreatic cancer. In the sensitivity studies, HSP27 overexpression rendered HSP27 low-expressing PL5 pancreatic cancer cells more susceptible towards treatment with gemcitabine. Vice versa, HSP27 protein depletion in HSP27 high-expressing AsPC-1 cells caused increased gemcitabine resistance. Importantly, HSP27 expression was inducible in pancreatic cancer cell lines as well as primary cells. Taken together, our study suggests a role for HSP27 as a prognostic and predictive marker in pancreatic cancer. Assessment of HSP27 expression could thus facilitate the identification of specific patient subpopulations that might benefit from individualized treatment options. Additional studies need to clarify whether modulation of HSP27 expression could represent an attractive concept to support the incorporation of hyperthermia in clinical treatment protocols for pancreatic cancer.
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Affiliation(s)
- Claus Schäfer
- Department of Medicine II, Klinikum Neumarkt, Neumarkt id OPf, Germany
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Kaur P, Nagaraja GM, Zheng H, Gizachew D, Galukande M, Krishnan S, Asea A. A mouse model for triple-negative breast cancer tumor-initiating cells (TNBC-TICs) exhibits similar aggressive phenotype to the human disease. BMC Cancer 2012; 12:120. [PMID: 22452810 PMCID: PMC3340297 DOI: 10.1186/1471-2407-12-120] [Citation(s) in RCA: 128] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2011] [Accepted: 03/27/2012] [Indexed: 12/31/2022] Open
Abstract
Background Triple-negative breast cancer (TNBC) exhibit characteristics quite distinct from other kinds of breast cancer, presenting as an aggressive disease--recurring and metastasizing more often than other kinds of breast cancer, without tumor-specific treatment options and accounts for 15% of all types of breast cancer with higher percentages in premenopausal African-American and Hispanic women. The reason for this aggressive phenotype is currently the focus of intensive research. However, progress is hampered by the lack of suitable TNBC cell model systems. Methods To understand the mechanistic basis for the aggressiveness of TNBC, we produced a stable TNBC cell line by sorting for 4T1 cells that do not express the estrogen receptor (ER), progesterone receptor (PgR) or the gene for human epidermal growth factor receptor 2 (HER2). As a control, we produced a stable triple-positive breast cancer (TPBC) cell line by transfecting 4T1 cells with rat HER2, ER and PgR genes and sorted for cells with high expression of ER and PgR by flow cytometry and high expression of the HER2 gene by Western blot analysis. Results We isolated tumor-initiating cells (TICs) by sorting for CD24+/CD44high/ALDH1+ cells from TNBC (TNBC-TICs) and TPBC (TPBC-TICs) stable cell lines. Limiting dilution transplantation experiments revealed that CD24+/CD44high/ALDH1+ cells derived from TNBC (TNBC-TICs) and TPBC (TPBC-TICs) were significantly more effective at repopulating the mammary glands of naïve female BALB/c mice than CD24-/CD44-/ALDH1- cells. Implantation of the TNBC-TICs resulted in significantly larger tumors, which metastasized to the lungs to a significantly greater extent than TNBC, TPBC-TICs, TPBC or parental 4T1 cells. We further demonstrated that the increased aggressiveness of TNBC-TICs correlates with the presence of high levels of mouse twenty-five kDa heat shock protein (Hsp25/mouse HspB1) and seventy-two kDa heat shock protein (Hsp72/HspA1A). Conclusions Taken together, we have developed a TNBC-TICs model system based on the 4T1 cells which is a very useful metastasis model with the advantage of being able to be transplanted into immune competent recipients. Our data demonstrates that the TNBC-TICs model system could be a useful tool for studies on the pathogenesis and therapeutic treatment for TNBC.
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Affiliation(s)
- Punit Kaur
- Department of Pathology, Scott & White Memorial Hospital and Clinic and the Texas A&M Health Science Center, College of Medicine, Temple, TX 76504, USA.
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Nagaraja GM, Kaur P, Neumann W, Asea EE, Bausero MA, Multhoff G, Asea A. Silencing Hsp25/Hsp27 gene expression augments proteasome activity and increases CD8+ T-cell-mediated tumor killing and memory responses. Cancer Prev Res (Phila) 2011; 5:122-37. [PMID: 22185976 DOI: 10.1158/1940-6207.capr-11-0121] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Relatively high expression of Hsp27 in breast and prostate cancer is a predictor of poor clinical outcome. This study elucidates a hitherto unknown mechanism by which Hsp27 regulates proteasome function and modulates tumor-specific T-cell responses. Here, we showed that short-term silencing of Hsp25 or Hsp27 using siRNA or permanent silencing of Hsp25 using lentivirus RNA interference technology enhanced PA28α mRNA expression, PA28α protein expression, and proteasome activity; abrogated metastatic potential; induced the regression of established breast tumors by tumor-specific CD8(+) T cells; and stimulated long-lasting memory responses. The adoptive transfer of reactive CD8(+) T cells from mice bearing Hsp25-silenced tumors efficiently induced the regression of established tumors in nontreated mice which normally succumb to tumor burden. The overexpression of Hsp25 and Hsp27 resulted in the repression of normal proteasome function, induced poor antigen presentation, and resulted in increased tumor burden. Taken together, this study establishes a paradigm shift in our understanding of the role of Hsp27 in the regulation of proteasome function and tumor-specific T-cell responses and paves the way for the development of molecular targets to enhance proteasome function and concomitantly inhibit Hsp27 expression in tumors for therapeutic gain.
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Affiliation(s)
- Ganachari M Nagaraja
- Division of Investigative Pathology, Scott & White Healthcare and Texas A&M Health Science Center, College of Medicine, Temple, TX 76504, USA.
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Mendelson J, Song S, Li Y, Maru DM, Mishra B, Davila M, Hofstetter WL, Mishra L. Dysfunctional transforming growth factor-β signaling with constitutively active Notch signaling in Barrett's esophageal adenocarcinoma. Cancer 2011; 117:3691-702. [PMID: 21305538 PMCID: PMC3236645 DOI: 10.1002/cncr.25861] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2010] [Revised: 11/02/2010] [Accepted: 11/09/2010] [Indexed: 02/03/2023]
Abstract
BACKGROUND Esophageal adenocarcinoma is often considered to arise from a clonal stem-like population of cells, which is potentially responsible for its poor prognosis. Transforming growth factor β (TGF-β) and Notch signaling pathways play important roles in regulating self-renewal of stem cells and cell-fate determination. Both pathways are frequently implicated in gastrointestinal carcinogenesis. However, their contributions to esophageal adenocarcinoma remain unclear. METHODS We evaluated TGF-β and Notch signaling components in normal esophagus, Barrett's esophagus, and adenocarcinoma tissues and cell lines via immunohistochemical analysis and immunoblotting; Hes-1 transcription was assayed using a Hes-1 luciferase reporter. RESULTS We observed loss of Smad4 (P<.05) and β2 spectrin (β2SP) (P<.01) in 5/10 Barrett's esophagus and 17/22 adenocarcinoma tissue sections. Concomitantly, dramatically raised levels of Notch signaling components Hes1 and Jagged1 occurred in adenocarcinoma tissues and cell lines compared with normal tissues. In normal esophagus, Oct3/4-positive cells are located in the basal layer (2-3 per cluster), representing a pool of progenitor cells. We observed an expansion of this pool of Oct3/4 positive cells in esophageal adenocarcinoma (15 per cluster). Furthermore, a panel of SOXs proteins documented for stem cell markers exhibit increased expression in tumor cells, indicating expansion of putative cancer stem cells. Finally, we observed growth inhibition in BE3 cells with a γ-secretase inhibitor, but not in SKGT-4 cells. Unlike SKGT-4 cells, BE3 cells have activated Notch signaling with disruption of TGF-β signaling. CONCLUSIONS Our findings demonstrated a potential therapeutic value for targeted therapy in esophageal adenocarcinoma in the setting of loss of β2SP/TGF-β with concomitant constitutively active Notch signaling.
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Affiliation(s)
| | - Shumei Song
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ying Li
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Dipen M Maru
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Bibhuti Mishra
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Marta Davila
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Wayne L Hofstetter
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Lopa Mishra
- Department of Gastroenterology, Hepatology and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, TX, USA,Correspondence to: Lopa Mishra, MD, Del&Dennis McCarthy Distinguished Professor & Chair, Department of Gastroenterology, Hepatology and Nutrition, The University of Texas, MD Anderson Cancer Center, Houston, TX, 77030, Tel: 713-794-3221, Fax: 713-745-1886,
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Song S, Byrd JC, Guha S, Liu KF, Koul D, Bresalier RS. Induction of MUC5AC mucin by conjugated bile acids in the esophagus involves the phosphatidylinositol 3-kinase/protein kinase C/activator protein-1 pathway. Cancer 2010; 117:2386-97. [PMID: 24048786 DOI: 10.1002/cncr.25796] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Revised: 09/30/2010] [Accepted: 10/07/2010] [Indexed: 02/06/2023]
Abstract
BACKGROUND Bile reflux contributes to the development of esophageal injury and neoplasia. The mucin 5AC (MUC5AC) is absent in the normal squamous epithelium of the esophagus but is strongly expressed in Barrett esophagus (BE). The objective of this study was to determine whether and how bile acids influence the expression of MUC5AC in the esophagus. METHODS MUC5AC expression was studied by immunohistochemistry and immunoblotting in human tissues, in tissues from a rat model of BE, and in SKGT-4 cultured esophageal epithelial cells. MUC5AC transcription was studied by real-time polymerase chain reaction and transient transfection assays. RESULTS MUC5AC was absent from normal squamous epithelium but was present in 100% of Barrett specimens and in 61.5% of human esophageal adenocarcinoma tissues that were examined. MUC5AC protein expression was induced to a greater degree by conjugated bile acids than by unconjugated bile acids, and this occurred at the transcriptional level. In the rat reflux model, MUC5AC mucin was expressed abundantly in tissues of BE stimulated by duodenoesophageal reflux. Conjugated bile acids induced AKT phosphorylation in SKGT-4 cells but had no effect on extracellular signal-regulated protein kinases 1 and 2, c-Jun N-terminal kinase, or protein-38 kinase phosphorylation. The phosphatidylinositol 3-kinase (PI3K) inhibitor LY294002 and a dominant-negative protein kinase C (AKT) construct prevented the induction of MUC5AC by conjugated bile acids. Transactivation of AP-1 by conjugated bile acids coincided with MUC5AC induction, and cotransfection with a dominant-negative activator protein-1 (AP-1) vector decreased MUC5AC transcription and its induction. CONCLUSIONS Conjugated bile acids in the bile refluxate contribute to MUC5AC induction in the esophagus. This occurs at the level of transcription and involves activation of the PI3K/AKT/AP-1 pathway.
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Affiliation(s)
- Shumei Song
- Department of Gastroenterology, Hepatology, and Nutrition, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
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Rantanen T, Honkanen T, Paavonen T, Rantanen L, Oksala N. Altered expression of HSP27 and HSP70 in distal oesophageal mucosa in patients with gastro-oesophageal reflux disease subjected to fundoplication. Eur J Surg Oncol 2010; 37:168-74. [PMID: 21095095 DOI: 10.1016/j.ejso.2010.10.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2010] [Revised: 09/09/2010] [Accepted: 10/26/2010] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Gastro-oesophageal reflux disease (GERD) is a risk factor for oesophageal adenocarcinoma. Although fundoplication cures reflux symptoms and oesophagitis, it remains controversial whether it is capable of preventing the development of oesophageal adenocarcinoma. Hsp27 and Hsp70 are associated with the development of cancer, whereas the effect of fundoplication on them is not known. METHODS The expression of Hsp27 and Hsp70 was assessed semiquantitatively from biopsies of oesophageal mucosa for a prospective cohort of 19 patients with GERD treated with fundoplication and 7 controls without GERD. Upper gastrointestinal endoscopy with biopsies from the oesophagogastric junction (EGJ) and the distal and proximal oesophagus were performed preoperatively (19 patients) and after recovery from GERD at 6 (19 patients) and 48 months (16 patients) postoperatively. RESULTS The expressions of both Hsp27 (p = 0.001) and Hsp70 (p = 0.002) in the distal oesophagus were lower in patients preoperatively and at 48 months postoperatively (p < 0.001 for both) than in controls. The patients' Hsp27 and Hsp70 levels were lower preoperatively in the proximal oesophagus (p = 0.048 for both) than in controls. Both Hsp27 (p = 0.002) and Hsp70 (p = 0.003) were lower in the distal oesophagus preoperatively and at 48 months postoperatively (p = 0.003 for Hsp27, p = 0.004 for Hsp70) than in the proximal oesophagus. CONCLUSIONS Our results indicate that there may be some factor interfering with the mucosal defence system of the distal oesophagus in GERD that is uninfluenced by fundoplication and not associated with the acid-reflux-normalizing effect.
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Affiliation(s)
- T Rantanen
- Department of Gastroenterology and Alimentary Tract Surgery, Tampere University Hospital, Tampere, Finland.
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Li M, Anastassiades CP, Joshi B, Komarck CM, Piraka C, Elmunzer BJ, Turgeon DK, Johnson TD, Appelman H, Beer DG, Wang TD. Affinity peptide for targeted detection of dysplasia in Barrett's esophagus. Gastroenterology 2010; 139:1472-80. [PMID: 20637198 PMCID: PMC3319360 DOI: 10.1053/j.gastro.2010.07.007] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2010] [Revised: 06/30/2010] [Accepted: 07/07/2010] [Indexed: 12/23/2022]
Abstract
BACKGROUND & AIMS Dysplasia is a premalignant condition in Barrett's esophagus that is difficult to detect on endoscopy because of its flat architecture and patchy distribution. Peptides are promising for use as novel molecular probes that identify cell surface targets unique to disease and can be fluorescence-labeled for detection. We aim to select and validate an affinity peptide that binds to esophageal dysplasia for future clinical studies. METHODS Peptide selection was performed using phage display by removing nonspecific binders using Q-hTERT (intestinal metaplasia) cells and achieving specific binding against OE33 (esophageal adenocarcinoma) cells. Selective binding was confirmed on bound phage counts, enzyme-linked immunosorbent assay (ELISA), flow cytometry, competitive inhibition, and fluorescence microscopy. On stereomicroscopy, specific peptide binding to dysplasia on endoscopically resected specimens was assessed by rigorous registration of fluorescence intensity to histology in 1-mm intervals. RESULTS The peptide sequence SNFYMPL was selected and showed preferential binding to target cells. Reduced binding was observed on competition with unlabeled peptide in a dose-dependent manner, an affinity of K(d) = 164 nmol/L was measured, and peptide binding to the surface of OE33 cells was validated on fluorescence microscopy. On esophageal specimens (n = 12), the fluorescence intensity (mean ± SEM) in 1-mm intervals classified histologically as squamous (n = 145), intestinal metaplasia (n = 83), dysplasia (n = 61), and gastric mucosa (n = 69) was 46.5 ± 1.6, 62.3 ± 5.8, 100.0 ± 9.0, and 42.4 ± 3.0 arb units, respectively. CONCLUSIONS The peptide sequence SNFYMPL binds specifically to dysplasia in Barrett's esophagus and can be fluorescence labeled to target premalignant mucosa on imaging.
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Affiliation(s)
- Meng Li
- Department of Medicine, Division of Gastroenterology, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China,Department of Pharmacy, State Key Laboratory of Cancer Biology, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
| | - Costas P. Anastassiades
- Department of Medicine, Division of Gastroenterology, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
| | - Bishnu Joshi
- Department of Medicine, Division of Gastroenterology, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
| | - Chris M. Komarck
- Department of Medicine, Division of Gastroenterology, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
| | - Cyrus Piraka
- Department of Medicine, Division of Gastroenterology, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
| | - Badih J. Elmunzer
- Department of Medicine, Division of Gastroenterology, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
| | - Danielle K. Turgeon
- Department of Medicine, Division of Gastroenterology, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China
| | | | - Henry Appelman
- Department of Pathology, University of Michigan, Ann Arbor, MI, 48109
| | - David G. Beer
- Department of Thoracic Surgery, University of Michigan, Ann Arbor, MI, 48109
| | - Thomas D. Wang
- Department of Medicine, Division of Gastroenterology, Fourth Military Medical University, Xi'an, Shaanxi, People's Republic of China,Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, 48109
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Abstract
Research in Barrett's oesophagus, and neoplastic progression to OAC (oesophageal adenocarcinoma), is hobbled by the lack of good pre-clinical models that capture the evolutionary dynamics of Barrett's cell populations. Current models trade off tractability for realism. Computational models are perhaps the most tractable and can be used both to interpret data and to develop intuitions and hypotheses for neoplastic progression. Tissue culture models include squamous cell lines, Barrett's oesophagus cell lines and OAC cell lines, although it was recognized recently that BIC-1, SEG-1 and TE-7 are not true OAC cell lines. Some of the unrealistic aspects of the micro-environment in two-dimensional tissue culture may be overcome with the development of three-dimensional organotypic cultures of Barrett's oesophagus. The most realistic, but least tractable, model is a canine surgical model that generates reflux and leads to an intestinal metaplasia. Alternatively, rat surgical models have gained popularity and should be tested for the common genetic features of Barrett's oesophagus neoplastic progression in humans including loss of CDKN2A (cyclin-dependent kinase inhibitor 2A) and TP53 (tumour protein 53), generation of aneuploidy and realistic levels of genetic diversity. This last feature will be important for studying the effects of cancer-prevention interventions. In order to study the dynamics of progression and the effects of an experimental intervention, there is a need to follow animals longitudinally, with periodic endoscopic biopsies. This is now possible and represents an exciting opportunity for the future.
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Abstract
Research in Barrett's oesophagus, and neoplastic progression to OAC (oesophageal adenocarcinoma), is hobbled by the lack of good pre-clinical models that capture the evolutionary dynamics of Barrett's cell populations. Current models trade off tractability for realism. Computational models are perhaps the most tractable and can be used both to interpret data and to develop intuitions and hypotheses for neoplastic progression. Tissue culture models include squamous cell lines, Barrett's oesophagus cell lines and OAC cell lines, although it was recognized recently that BIC-1, SEG-1 and TE-7 are not true OAC cell lines. Some of the unrealistic aspects of the micro-environment in two-dimensional tissue culture may be overcome with the development of three-dimensional organotypic cultures of Barrett's oesophagus. The most realistic, but least tractable, model is a canine surgical model that generates reflux and leads to an intestinal metaplasia. Alternatively, rat surgical models have gained popularity and should be tested for the common genetic features of Barrett's oesophagus neoplastic progression in humans including loss of CDKN2A (cyclin-dependent kinase inhibitor 2A) and TP53 (tumour protein 53), generation of aneuploidy and realistic levels of genetic diversity. This last feature will be important for studying the effects of cancer-prevention interventions. In order to study the dynamics of progression and the effects of an experimental intervention, there is a need to follow animals longitudinally, with periodic endoscopic biopsies. This is now possible and represents an exciting opportunity for the future.
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Mauchley D, Meng X, Johnson T, Teitelbaum J, Babu A, Fullerton DA, Weyant MJ. Heat shock protein 27: Induction by gastroduodenal reflux in vivo and augmentation of human esophageal mucosal cell growth in vitro. J Thorac Cardiovasc Surg 2010; 139:1019-25. [DOI: 10.1016/j.jtcvs.2009.09.066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2009] [Revised: 08/28/2009] [Accepted: 09/29/2009] [Indexed: 01/08/2023]
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Otaka M, Odashima M, Tamaki K, Watanabe S. Expression and function of stress (heat shock) proteins in gastrointestinal tract. Int J Hyperthermia 2009; 25:634-40. [DOI: 10.3109/02656730903315815] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Zagon IS, Donahue RN, McLaughlin PJ. Opioid growth factor-opioid growth factor receptor axis is a physiological determinant of cell proliferation in diverse human cancers. Am J Physiol Regul Integr Comp Physiol 2009; 297:R1154-61. [PMID: 19675283 DOI: 10.1152/ajpregu.00414.2009] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The opioid growth factor (OGF) regulates cell proliferation of human cancer cells through the cyclin-dependent kinase inhibitory pathway, with mediation of this action by the OGF receptor (OGFr). The ubiquity of the OGF-OGFr axis in human cancer is unknown. We used 31 human cancer cell lines, representative of more than 90% of neoplasias occurring in humans, and found that OGF and OGFr were detected in the cytoplasm and nucleus by immunohistochemistry. The addition of OGF to cultures depressed cell number up to 41%, whereas naltrexone (NTX) increased cell proliferation by up to 44%, a total of 85% in the modulating capacity for the OGF-OGFr axis. Neutralization of OGF by specific antibodies led to a marked increase in cell number. Knockdown of OGFr by OGFr-siRNA resulted in a significant increase in the number of cells, even in the face of the addition of exogenous OGF. The cultures to which NTX was added and subjected to OGFr-siRNA were similar to those with OGF-siRNA alone. The OGF-OGFr axis, a physiological determinant of cell-proliferative activity, is a ubiquitous feature of human cancer cells. The identification of this native biological system in neoplasia may be important in understanding the pathophysiology of neoplasia, and in designing treatment modalities that utilize the body's own chemistry.
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Affiliation(s)
- Ian S Zagon
- Department of Neural and Behavioral Sciences, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA.
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Clinical spectrum of reflux esophagitis among 25,536 Koreans who underwent a health check-up: a nationwide multicenter prospective, endoscopy-based study. J Clin Gastroenterol 2009; 43:632-8. [PMID: 19169148 DOI: 10.1097/mcg.0b013e3181855055] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND Gastroesophageal reflux is a commonly encountered condition, but detailed data on reflux symptoms in Asian countries are lacking. GOALS To evaluate the prevalence and to document the clinical spectrum of endoscopic reflux esophagitis (RE). STUDY A total 25,536 subjects underwent an upper gastrointestinal endoscopic examination as part of a health check, and completed a gastroesophageal reflux questionnaire. Endoscopic findings classified according to the Los Angeles (LA) classification and the data from gastroesophageal reflux questionnaire were analyzed. RESULTS On the basis of endoscopic findings, 2019 subjects (7.91%) were found to have RE: 5.87% in LA-A; 1.84% in LA-B; 0.18% in LA-C; and 0.02% in LA-D. Heartburn, acid regurgitation, chest pain, hoarseness, globus sensation, cough, and epigastric soreness were found to be associated with RE (P<0.05). Heartburn, acid regurgitation, and epigastric soreness were more frequent in LA-B than in LA-A (P<0.05). Epigastric soreness was most bothersome in LA-A and LA-B, and acid regurgitation was most bothersome in LA-C and LA-D (P<0.01). Heartburn, hoarseness, and globus sensation were more frequent in men with RE, and acid regurgitation was most common in women. CONCLUSIONS The prevalence of RE was found to be 7.91% in Korea, and the profiles of reflux symptoms were found to depend on grade of RE and sex.
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Song S, Krishnan K, Liu K, Bresalier RS. Polyphenon E inhibits the growth of human Barrett's and aerodigestive adenocarcinoma cells by suppressing cyclin D1 expression. Clin Cancer Res 2009; 15:622-31. [PMID: 19147768 DOI: 10.1158/1078-0432.ccr-08-0772] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Green tea consumption has been shown to exhibit cancer-preventive activities in preclinical studies. Polyphenon E (Poly E) is a well-defined green tea-derived catechin mixture. This study was designed to determine the effects of Poly E on the growth of human Barrett's and aerodigestive adenocarcinoma cells and the mechanisms involved in growth regulation by this agent. EXPERIMENTAL DESIGN Human adenocarcinoma cells and immortalized Barrett's epithelial cells were used as model systems. RESULTS Poly E inhibited the proliferation of immortalized Barrett's cells as well as various adenocarcinoma cells, and this was associated with the down-regulation of cyclin D1 protein expression. Inhibition of cyclin D1 led to dephosphorylation of the retinoblastoma protein in a dose-dependent manner; these changes were associated with G(1) cell cycle arrest. Poly E down-regulated cyclin D1 promoter activity and mRNA expression, suggesting transcriptional repression, and this correlated with decreased nuclear beta-catenin and beta-catenin/TCF4 transcriptional activity. MG132, an inhibitor of 26S proteosome, blocked the Poly E-induced down-regulation of cyclin D1, and Poly E promoted cyclin D1 polyubiquitination, suggesting that Poly E also inhibits cyclin D1 expression by promoting its degradation. CONCLUSION Poly E inhibits growth of transformed aerodigestive epithelial cells by suppressing cyclin D1 expression through both transcriptional and posttranslational mechanisms. These results provide insight into the mechanisms by which Poly E inhibits growth of Barrett's and adenocarcinoma cells, and provides a rationale for using this agent as a potential chemopreventive and therapeutic strategy for esophageal adenocarcinoma and its precursor, Barrett's esophagus.
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Affiliation(s)
- Shumei Song
- Department of Gastroenterology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030-4009, USA
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Specific induction of a 72-kDa heat shock protein protects esophageal mucosa from reflux esophagitis. Life Sci 2009; 84:517-22. [DOI: 10.1016/j.lfs.2009.01.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2008] [Revised: 12/19/2008] [Accepted: 01/26/2009] [Indexed: 11/21/2022]
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Langer R, Ott K, Specht K, Becker K, Lordick F, Burian M, Herrmann K, Schrattenholz A, Cahill MA, Schwaiger M, Hofler H, Wester HJ. Protein expression profiling in esophageal adenocarcinoma patients indicates association of heat-shock protein 27 expression and chemotherapy response. Clin Cancer Res 2009; 14:8279-87. [PMID: 19088045 DOI: 10.1158/1078-0432.ccr-08-0679] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE To identify pretherapeutic predictive biomarkers in tumor biopsies of patients with locally advanced esophageal adenocarcinomas treated with neoadjuvant chemotherapy, we used an explorative proteomic approach to correlate pretherapeutic protein expression profiles with tumor response to neoadjuvant chemotherapy. EXPERIMENTAL DESIGN Thirty-four patients with locally advanced esophageal adenocarcinomas who received neoadjuvant platin/5-fluorouracil-based chemotherapy before surgical resection were enrolled in this study. Response to chemotherapy was determined (a) by the amount of decline of [18F]fluorodeoxyglucose tumor uptake 2 weeks after the start of chemotherapy measured by positron emission tomography and (b) by histopathologic evaluation of tumor regression after surgical resection. Explorative quantitative and qualitative protein expression analysis was done through a quantitative differential protein expression analysis that used dual-isotope radioactive labeling of protein extracts. Selected identified biomarkers were validated by immunohistochemistry and quantitative real time reverse transcription-PCR. RESULTS Proteomic analysis revealed four cellular stress response-associated proteins [heat-shock protein (HSP) 27, HSP60, glucose-regulated protein (GRP) 94, GRP78] and a number of cytoskeletal proteins whose pretherapeutic abundance was significantly different (P < 0.001) between responders and nonresponders. Immunohistochemistry and gene expression analysis confirmed these data, showing a significant association between low HSP27 expression and nonresponse to neoadjuvant chemotherapy (P = 0.049 and P = 0.032, respectively). CONCLUSIONS Albeit preliminary, our encouraging data suggest that protein expression profiling may distinguish cancers with a different response to chemotherapy. Our results suggest that response to chemotherapy may be related to a different activation of stress response and inflammatory biology in general. Moreover, the potential of HSPs and GRPs as biomarkers of chemotherapy response warrants further validation.
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Affiliation(s)
- Rupert Langer
- Institute of Pathology, Klinikum Rechts der Isar, Technische Universität München, Munich, Germany.
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Breton J, Gage MC, Hay AW, Keen JN, Wild CP, Donnellan C, Findlay JBC, Hardie LJ. Proteomic screening of a cell line model of esophageal carcinogenesis identifies cathepsin D and aldo-keto reductase 1C2 and 1B10 dysregulation in Barrett's esophagus and esophageal adenocarcinoma. J Proteome Res 2008; 7:1953-62. [PMID: 18396902 DOI: 10.1021/pr7007835] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Esophageal adenocarcinoma (EA) incidence is increasing rapidly and is associated with a poor prognosis. Identifying biomarkers of disease development and progression would be invaluable tools to inform clinical practice. Two-dimensional polyacrylamide gel electrophoresis was used to screen 10 esophageal cell lines representing distinct stages in the development of esophageal cancer. Thirty-three proteins were identified by MALDI-TOF-MS which demonstrated differences in expression across the cell lines. Western blotting and qRT-PCR confirmed increased cathepsin D and aldo-keto reductases 1C2 and 1B10 expression in metaplastic and dysplastic cell lines. Expression of these proteins was further assessed in esophageal epithelium from patients with nonerosive (NERD) and erosive gastro-esophageal reflux disease, Barrett's esophagus (BE) and EA. When compared with normal epithelium of NERD patients, (i) cathepsin D mRNA levels demonstrated a stepwise increase in expression (p<0.05) in erosive, metaplastic and EA tissue; (ii) AKR1B10 expression increased (p<0.05) 3- and 9-fold in erosive and Barrett's epithelium, respectively; and (iii) AKR1C2 levels increased (p<0.05) in erosive and Barrett's epithelium, but were reduced (p<0.05) in EA. These proteins may contribute to disease development via effects on apoptosis, transport of bile acids and retinoid metabolism and should be considered as candidates for further mechanistic and clinical investigations.
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Affiliation(s)
- Jean Breton
- Molecular Epidemiology Unit, Centre for Epidemiology and Biostatistics, Leeds Institute of Genetics, Health and Therapeutics, Clarendon Way, University of Leeds, Leeds LS2 9JT, United Kingdom
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Wang Z, Hao Y, Lowe AW. The adenocarcinoma-associated antigen, AGR2, promotes tumor growth, cell migration, and cellular transformation. Cancer Res 2008; 68:492-7. [PMID: 18199544 DOI: 10.1158/0008-5472.can-07-2930] [Citation(s) in RCA: 154] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The AGR2 gene encodes a secretory protein that is highly expressed in adenocarcinomas of the esophagus, pancreas, breast, and prostate. This study explores the effect of AGR2 expression with well-established in vitro and in vivo assays that screen for cellular transformation and tumor growth. AGR2 expression in SEG-1 esophageal adenocarcinoma cells was reduced with RNA interference. Cellular transformation was examined using NIH3T3 cells that express AGR2 after stable transfection. The cell lines were studied in vitro with assays for density-dependent and anchorage-independent growth, and in vivo as tumor xenografts in nude mice. SEG-1 cells with reduced AGR2 expression showed an 82% decrease in anchorage-independent colony growth and a 60% reduction in tumor xenograft size. In vitro assays of AGR2-expressing NIH3T3 cells displayed enhanced foci formation and anchorage-independent growth. In vivo, AGR2-expressing NIH3T3 cells established tumors in nude mice. Thus, AGR2 expression promotes tumor growth in esophageal adenocarcinoma cells and is able to transform NIH3T3 cells. Immunohistochemistry of the normal mouse intestine detected AGR2 expression in proliferating and differentiated intestinal cells of secretory lineage. AGR2 may be important for the growth and development of the intestine as well as esophageal adenocarcinomas.
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Affiliation(s)
- Zheng Wang
- Department of Medicine, Stanford University, Stanford, California 94305-5187, USA
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Feagins LA, Zhang HY, Zhang X, Hormi-Carver K, Thomas T, Terada LS, Spechler SJ, Souza RF. Mechanisms of oxidant production in esophageal squamous cell and Barrett's cell lines. Am J Physiol Gastrointest Liver Physiol 2008; 294:G411-7. [PMID: 18063706 DOI: 10.1152/ajpgi.00373.2007] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
We hypothesized that differences among individuals in reflux-induced oxidant production by esophageal squamous epithelial cells might contribute to the development of Barrett's esophagus. We studied the effects of acid and bile acids on the production of reactive oxygen species (ROS) in esophageal squamous cell lines derived from gastroesophageal reflux disease patients with (NES-B3T) and without (NES-G2T) Barrett's esophagus and in a Barrett's epithelial cell line (BAR-T). Cells were incubated with an ROS-sensitive probe and exposed to acidic medium, neutral bile acid medium, or acidic bile acid medium. ROS were quantified in the presence and absence of diphenyleneiodonium chloride (DPI, an NADPH oxidase inhibitor), N(G)-monomethyl-l-arginine (l-NMMA, a nitric oxide synthase inhibitor), and rotenone (a mitochondrial electron transport chain inhibitor). Acidic bile acid medium induced ROS production in both squamous cell lines; however, only DPI blocked ROS production by NES-B3T cells, whereas both DPI and l-NMMA blocked ROS production by NES-G2T cells. In BAR-T cells, acidic medium and acidic bile acid medium induced the production of ROS; l-NMMA prevented ROS production after exposure to acidic medium, whereas ROS production induced by acidic bile acid medium was blocked by DPI. These studies demonstrate that there are differences between esophageal squamous cells and Barrett's epithelial cells and between esophageal squamous cells from gastroesophageal reflux disease patients with and without Barrett's esophagus in the mechanisms of oxidant production induced by exposure to acid and bile acids.
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Affiliation(s)
- Linda A Feagins
- Department of Medicine, Dallas VA Medical Center, Dallas, TX 75216, USA
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Song S, Guha S, Liu K, Buttar NS, Bresalier RS. COX-2 induction by unconjugated bile acids involves reactive oxygen species-mediated signalling pathways in Barrett's oesophagus and oesophageal adenocarcinoma. Gut 2007; 56:1512-21. [PMID: 17604323 PMCID: PMC2095641 DOI: 10.1136/gut.2007.121244] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVES Bile reflux contributes to oesophageal injury and neoplasia. COX-2 is involved in both inflammation and carcinogenesis; however, the precise mechanisms by which bile acids promote COX-2 expression in the oesophagus are largely unknown. We analysed the molecular mechanisms that govern bile acid-mediated expression of COX-2 in Barrett's oesophagus and oesophageal adenocarcinoma (OA). DESIGN The effects of bile acids on COX-2 expression were analysed in immortalised Barrett's oesophagus and OA cells using immunoblotting and transient transfections. Pharmacological inhibitors, phospho-specific antibodies, dominant-negative mutants and siRNA techniques were used to identify relevant signalling pathways. Flow cytometry and reactive oxygen species (ROS) scavengers were used to examine ROS involvement. Immunohistochemistry was performed on oesophageal mucosa obtained from an established rat model of bile reflux. RESULTS Unconjugated bile acids potently stimulated COX-2 expression and induced AKT and ERK1/2 phosphorylation in concert with COX-2 induction. These findings were mimicked in the in vivo rat model. Dominant-negative (DN) AKT and LY294002 (PI3K inhibitor) or U0126 (MEK-1/2 inhibitor) blocked chenodeoxycholic acid (CD) and deoxycholic acid (DC) mediated COX-2 induction. CD and DC also induced CREB phosphorylation and AP-1 activity. CREB-specific siRNA and DN AP-1 blocked CD and DC-induced COX-2 induction. Finally, CD and DC increased intracellular ROS, while ROS scavengers blocked COX-2 induction and the signalling pathways involved. CONCLUSIONS Unconjugated bile acids induce CREB and AP-1-dependent COX-2 expression in Barrett's oesophagus and OA through ROS-mediated activation of PI3K/AKT and ERK1/2. This study enhances our understanding of the molecular mechanisms by which bile acids promote the development of oesophageal adenocarcinoma.
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Affiliation(s)
- Shumei Song
- Department of Gastrointestinal Medicine and Nutrition, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030-4009, USA
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Cheng Y, Zhang J, Li Y, Wang Y, Gong J. Proteome analysis of human gastric cardia adenocarcinoma by laser capture microdissection. BMC Cancer 2007; 7:191. [PMID: 17927838 PMCID: PMC2151079 DOI: 10.1186/1471-2407-7-191] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2007] [Accepted: 10/11/2007] [Indexed: 12/26/2022] Open
Abstract
Background The incidence of gastric cardiac adenocarcinoma (GCA) has been increasing in the past two decades in China, but the molecular changes relating to carcinogenesis have not been well characterised. Methods In this study, we used a comparative proteomic approach to analyse the malignant and nonmalignant gastric cardia epithelial cells isolated by navigated laser capture microdissection (LCM) from paired surgical specimens of human GCA. Results Twenty-seven spots corresponding to 23 proteins were consistently differentially regulated. Fifteen proteins were shown to be up-regulated, while eight proteins were shown to be down-regulated in malignant cells compared with nonmalignant columnar epithelial cells. The identified proteins appeared to be involved in metabolism, chaperone, antioxidation, signal transduction, apoptosis, cell proliferation, and differentiation. In addition, expressions of HSP27, 60, and Prx-2 in GCA specimens were further confirmed by immunohistochemical and western blot analyses. Conclusion These data indicate that the combination of navigated LCM with 2-DE provides an effective strategy for discovering proteins that are differentially expressed in GCA. Such proteins may contribute in elucidating the molecular mechanisms of GCA carcinogenesis. Furthermore, the combination provides potential clinical biomarkers that aid in early detection and provide potential therapeutic targets.
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Affiliation(s)
- Yan Cheng
- Department of Gastroenterology, the Second Affiliated Hospital, Xi'an Jiaotong University, Xi'an, China.
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Hu Y, Williams VA, Gellersen O, Jones C, Watson TJ, Peters JH. The pathogenesis of Barrett's esophagus: secondary bile acids upregulate intestinal differentiation factor CDX2 expression in esophageal cells. J Gastrointest Surg 2007; 11:827-34. [PMID: 17458588 DOI: 10.1007/s11605-007-0174-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
INTRODUCTION Clinical evidence strongly suggests that bile acids are important in the development of Barrett's esophagus, although the mechanism remains unknown. Caudal-related homeobox 2 (CDX2) is a transcription factor recently implicated in early differentiation and maintenance of normal intestinal epithelium and is suggested to play a key role in the pathogenesis of intestinal metaplasia in Barrett's esophagus. OBJECTIVE The aim of this study was to investigate the effect of primary and secondary bile acids on CDX2 mRNA expression in human esophageal cells. METHODS Human esophageal cells: (1) squamous, immortalized by SV40 (Het-1A); (2) adenocarcinoma (SEG-1); and (3) squamous cell carcinoma (HKESC-1 & HKESC-2), were exposed in cell culture for 1-24 h to 100-1,000 microM deoxycholic, chenodeoxycholic, and glycocholic acids. Total RNA was extracted before and after bile acid treatment and reverse transcribed to cDNA. CDX2 mRNA expression was determined by both quantitative real-time and reverse transcription PCR (RT-PCR). RESULTS CDX2 mRNA expression was absent before bile acid exposure in all cell lines. CDX2 expression increased in a dose- and time-dependent fashion with deoxycholic and chenodeoxycholic, but not glycocholic, acid in all four cell lines. The maximal induction of CDX2 expression was seen in SEG-1 adenocarcinoma cells. Expression in Het-1A cells also increased significantly as did expression in HKESC-1,2 cells, although to a lesser extent than in adenocarcinoma. CONCLUSIONS These findings show that secondary bile acid stimulation upregulates CDX2 gene expression in both normal and cancer cell lines. They further support the role of bile acids in the pathogenesis of Barrett's esophagus and link the clinical evidence of a high prevalence of luminal bile acids in Barrett's to expression of the gene thought to be responsible for the phenotypic expression of intestinal metaplasia.
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Affiliation(s)
- Yingchuan Hu
- Department of Surgery, School of Medicine and Dentistry, University of Rochester, 601 Elmwood Ave, Rochester, New York 14642, USA
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