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https://www.readbyqxmd.com/read/28092842/blocking-tgf-%C3%AE-1-by-p17-peptides-attenuates-gastric-cancer-cell-induced-peritoneal-fibrosis-and-prevents-peritoneal-dissemination-in-vitro-and-in-vivo
#1
Zhi-Dong Lv, Wei-Jun Zhao, Li-Ying Jin, Wen-Juan Wang, Qian Dong, Na Li, Hui-Mian Xu, Hai-Bo Wang
Our previous study demonstrated that the peritoneal stroma environment favors proliferation of tumor cells by serving as a rich source of growth factors and chemokines known to be involved in tumor metastasis. In this study, we investigated the interaction between gastric cancer cells and peritoneal mesothelial cells, and determined the effects of TGF-β1 in this processing. Human peritoneal tissues and peritoneal wash fluid were obtained, which examined by hematoxylin and eosin staining or ELISA for measurements of TGF-β1 levels...
January 13, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28056854/establishing-a-xenograft-mouse-model-of-peritoneal-dissemination-of-gastric-cancer-with-organ-invasion-and-fibrosis
#2
Mitsuyoshi Okazaki, Sachio Fushida, Shinichi Harada, Tomoya Tsukada, Jun Kinoshita, Katsunobu Oyama, Tomoharu Miyashita, Itasu Ninomiya, Tetsuo Ohta
BACKGROUND: The clinical prognosis of gastric cancer with peritoneal dissemination is poor because of its chemoresistance and rich fibrosis. While several gastric cancer cell lines have been used to establish models of peritoneal dissemination by intraperitoneal injection, most peritoneal tumors that form adopt a medullary pattern in microscopic appearance. This histological finding for the model differs from that in the clinical situation. This study was performed to demonstrate the contribution of human peritoneal mesothelial cells (HPMCs) to fibrotic tumor formation and to establish a new xenograft model with high potential for peritoneal dissemination with organ invasion and extensive fibrosis...
January 5, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28035373/cancer-associated-peritoneal-mesothelial-cells-lead-the-formation-of-pancreatic-cancer-peritoneal-dissemination
#3
Toshiya Abe, Kenoki Ohuchida, Kazuhiro Koikawa, Sho Endo, Takashi Okumura, Masafumi Sada, Kohei Horioka, Biao Zheng, Taiki Moriyama, Kohei Nakata, Yoshihiro Miyasaka, Tatsuya Manabe, Takao Ohtsuka, Eishi Nagai, Kazuhiro Mizumoto, Makoto Hashizume, Masafumi Nakamura
The interaction between the cancer cells and the peritoneal mesothelial cells (PMCs) plays an important role in the peritoneal dissemination in several types of cancer. However, the role of PMCs in the peritoneal dissemination of pancreatic cancer remains unclear. In the present study, we investigated the interaction between the pancreatic cancer cells (PCCs) and the PMCs in the formation of peritoneal dissemination in vitro and in vivo. The tumor-stromal interaction of PCCs and PMCs significantly enhanced their mobility and invasiveness and enhanced the proliferation and anoikis resistance of PCCs...
February 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28032864/senescent-peritoneal-mesothelium-creates-a-niche-for-ovarian-cancer-metastases
#4
Justyna Mikuła-Pietrasik, Paweł Uruski, Patrycja Sosińska, Konstantin Maksin, Hanna Piotrowska-Kempisty, Małgorzata Kucińska, Marek Murias, Sebastian Szubert, Aldona Woźniak, Dariusz Szpurek, Stefan Sajdak, Katarzyna Piwocka, Andrzej Tykarski, Krzysztof Książek
Although both incidence and aggressiveness of ovarian malignancy rise with age, the exact reason for this tendency, in particular the contribution of senescent cells, remains elusive. In this project we found that the patient's age determines the frequency of intraperitoneal metastases of ovarian cancer. Moreover, we documented that senescent human peritoneal mesothelial cells (HPMCs) stimulate proliferation, migration and invasion of ovarian cancer cells in vitro, and that this effect is related to both the activity of soluble agents released to the environment by these cells and direct cell-cell contact...
December 29, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/28029338/vasculogenic-mimicry-in-malignant-mesothelioma-an-experimental-and-immunohistochemical-analysis
#5
Emily Pulford, Ashleigh Hocking, Kim Griggs, James McEvoy, Claudine Bonder, Douglas W Henderson, Sonja Klebe
Vasculogenic mimicry, the process in which cancer cells form angiomatoid structures independent of or in addition to host angiogenesis has been recorded in several otherwise non-endothelial malignant neoplasms. This study describes evidence of routine vascular mimicry by human mesothelioma cell lines in vitro, when the cell lines are cultured alone or co-cultured with human umbilical vascular endothelial cells, with the formation of angiomatoid tubular networks. Vasculogenic mimicry is also supported by immunohistochemical demonstration of human-specific anti-mitochondria antibody labelling of tumour-associated vasculature of human mesothelioma cells xenotransplanted into nude mice, and by evidence of vascular mimicry in some biopsy samples of human malignant mesotheliomas...
October 28, 2016: Pathology
https://www.readbyqxmd.com/read/28007619/malignant-mesothelioma-biomarkers-from-discovery-to-use-in-clinical-practise-for-diagnosis-monitoring-screening-and-treatment
#6
REVIEW
Jenette Creaney, Bruce W S Robinson
Malignant pleural mesothelioma is a highly aggressive tumour associated with asbestos exposure. There are few effective treatment options for mesothelioma and patients have a very poor prognosis with a median survival of less than 12 months from diagnosis. Biomarkers have been proposed as a cost-effective means of cancer management and the search for a mesothelioma biomarker has been on-going for the past thirty years. Many traditional soluble (glyco)-protein biomarkers have been evaluated over this time and an ever increasing list of new biomarkers, including mRNA, DNA, miRNA and antibodies, are being reported from biomarker discovery projects...
December 19, 2016: Chest
https://www.readbyqxmd.com/read/27984124/loss-of-brca1-associated-protein-1-bap1-expression-is-rare-in-non-small-cell-lung-cancer
#7
Daniel Owen, Brandon S Sheffield, Diana Ionescu, Andrew Churg
BRCA1-associated protein 1 (BAP1) is a tumor suppressor gene involved in regulation of the cell cycle, cellular differentiation, repair of DNA damage and apoptosis. In the distinction of malignant mesothelioma from benign mesothelial proliferations, immunohistochemical loss of BAP1, the protein expressed by the BAP1 gene, has proven highly specific for malignant mesothelioma. However, few studies have investigated the rate of BAP1 loss in tumors that commonly metastasize to the pleura. Our objective is to determine the rate of BAP1 loss in non-small cell lung cancer (NSCLC)...
October 28, 2016: Human Pathology
https://www.readbyqxmd.com/read/27957426/mesothelial-inclusions-in-pelvic-lymph-nodes-initially-diagnosed-as-metastatic-prostate-cancer-the-utility-of-second-opinions-and-genomic-testing-in-the-setting-of-unexpected-results
#8
Fadi Joudi, Bela S Denes, Carolyn Mies, Alan W Shindel
Benign mesothelial inclusions in pelvic lymph nodes may be mistaken for metastatic disease in the setting of pelvic malignancy. In this case-report a patient with Low-Risk prostate cancer (confirmed by biopsy and genomic testing) underwent radical prostatectomy with pelvic lymph node dissection. The initial pathological diagnosis was organ-confined Gleason 3 + 3 = 6 cancer with metastasis to a pelvic lymph node. Upon review of the pathological specimen and immunohistochemical staining the lymph node tissue concerning for metastatic disease was recharacterized as mesothelial in origin...
January 2017: Urology Case Reports
https://www.readbyqxmd.com/read/27956272/vasculogenic-mimicry-in-malignant-mesothelioma-an-experimental-and-immunohistochemical-analysis
#9
Emily Pulford, Ashleigh Hocking, Kim Griggs, James McEvoy, Claudine Bonder, Douglas W Henderson, Sonja Klebe
Vasculogenic mimicry, the process in which cancer cells form angiomatoid structures independent of or in addition to host angiogenesis has been recorded in several otherwise non-endothelial malignant neoplasms. This study describes evidence of routine vascular mimicry by human mesothelioma cell lines in vitro, when the cell lines are cultured alone or co-cultured with human umbilical vascular endothelial cells, with the formation of angiomatoid tubular networks. Vasculogenic mimicry is also supported by immunohistochemical demonstration of human-specific anti-mitochondria antibody labelling of tumour-associated vasculature of human mesothelioma cells xenotransplanted into nude mice, and by evidence of vascular mimicry in some biopsy samples of human malignant mesotheliomas...
December 2016: Pathology
https://www.readbyqxmd.com/read/27907819/giant-primary-malignant-mesothelioma-of-the-liver-a-case-report
#10
Ruba Haji Ali, Mohamad Khalife, Ghina El Nounou, Ruba Zuhri Yafi, Hussein Nassar, Zeinab Aidibe, Randa Raad, Rania Abou Eid, Walid Faraj
INTRODUCTION: Malignant mesothelioma is a rare neoplasm of mesothelial cells arising most frequently in the pleura or peritoneum and less frequently in the liver. CASE PRESENTATION: We present a case of primary hepatic mesothelioma of 41year old woman. She had no history of asbestos exposure or cancer. Abdominal computed tomography (CT) showed 21cm intrahepatic mass in the right lobe with many cystic lesions and few small calcifications. Pathology showed a biphasic cellular pattern...
November 11, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27900005/fluoro-edenite-induces-fibulin-3-overexpression-in-non-malignant-human-mesothelial-cells
#11
Venerando Rapisarda, Rossella Salemi, Andrea Marconi, Carla Loreto, Adriana C Graziano, Venera Cardile, Maria S Basile, Saverio Candido, Luca Falzone, Demetrios A Spandidos, Concettina Fenga, Massimo Libra
Exposure to asbestos is associated with the development of mesothelioma. In addition to asbestos, other fibers have been identified as risk factors for malignant and non-malignant diseases of the lungs. Among these, fluoro-edenite (FE) was found in patients from Biancavilla (Sicily, Italy) with pleural and lung disease, suggesting its role for tumor expansion. In this context, the identification of early biomarkers useful for the diagnosis of cancer is mandatory. Fibulin-3 represents an important marker for the diagnosis of mesothelioma...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27895076/mesothelial-cells-create-a-novel-tissue-niche-that-facilitates-gastric-cancer-invasion
#12
Masamitsu Tanaka, Sei Kuriyama, Go Itoh, Daichi Maeda, Akiteru Goto, Yutaro Tamiya, Kazuyoshi Yanagihara, Masakazu Yashiro, Namiko Aiba
Peritoneal mesothelial cells (PMC) cover organ surfaces in the abdominal cavity. In this study, lineage tracing revealed that PMC guide cancer cell invasion in the gastric wall and in peritoneal metastatic lesions. Serosal PMC covering the stomach surface entered the gastric wall to create a novel niche that favored gastric cancer cell invasion. PMC infiltration was induced by incorporation of cancer cell-derived, Wnt3a-containing extracellular vesicles (EV). Infiltrated PMC in turn promoted subserosal invasion of cancer cells...
November 28, 2016: Cancer Research
https://www.readbyqxmd.com/read/27863439/re-purposing-of-curcumin-as-an-anti-metastatic-agent-for-the-treatment-of-epithelial-ovarian-cancer-in-vitro-model-using-cancer-stem-cell-enriched-ovarian-cancer-spheroids
#13
Misi He, Dong Wang, Dongling Zou, Chen Wang, Bruno Lopes-Bastos, Wen G Jiang, John Chester, Qi Zhou, Jun Cai
Malignant epithelial ovarian cancer (EOC) spheroids high frequently are detected in the malignant ascites of the patients with the extensive peritoneal metastasis of ovarian cancer, which represent a significant obstacle to efficacious treatment. Clinical data also suggested that EOC spheroids play a putative role in the development of chemoresistance. Since standard surgery and conventional chemotherapy is the only available treatment, there is an urgent need to identify a more effective therapeutic strategy...
November 16, 2016: Oncotarget
https://www.readbyqxmd.com/read/27863199/mesothelin-immunotherapy-for-cancer-ready-for-prime-time
#14
Raffit Hassan, Anish Thomas, Christine Alewine, Dung T Le, Elizabeth M Jaffee, Ira Pastan
Mesothelin is a tumor antigen that is highly expressed in many human cancers, including malignant mesothelioma and pancreatic, ovarian, and lung adenocarcinomas. It is an attractive target for cancer immunotherapy because its normal expression is limited to mesothelial cells, which are dispensable. Several antibody-based therapeutic agents as well as vaccine and T-cell therapies directed at mesothelin are undergoing clinical evaluation. These include antimesothelin immunotoxins (SS1P, RG7787/LMB-100), chimeric antimesothelin antibody (amatuximab), mesothelin-directed antibody drug conjugates (anetumab ravtansine, DMOT4039A, BMS-986148), live attenuated Listeria monocytogenes-expressing mesothelin (CRS-207, JNJ-64041757), and chimeric antigen receptor T-cell therapies...
December 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/27859460/diagnostic-utility-of-bap1-and-ezh2-expression-in-malignant-mesothelioma
#15
Aya Shinozaki-Ushiku, Tetsuo Ushiku, Shigeki Morita, Masaki Anraku, Jun Nakajima, Masashi Fukayama
AIMS: Malignant mesothelioma is a highly aggressive cancer usually diagnosed at advanced stages; thus, highly sensitive and specific markers are necessary for its early definitive diagnosis. The aim of the study is to evaluate the diagnostic utility and prognostic significance of BRCA1-Associated Protein 1 (BAP1) and enhancer of zeste 2 polycomb repressive complex 2 subunit (EZH2) in malignant mesothelioma. METHODS AND RESULTS: The expression of BAP1 and EZH2 was investigated by immunohistochemistry in 32 malignant mesothelioma and 44 benign mesothelial proliferative lesions, including well-differentiated papillary mesothelioma (n = 4), mesothelial inclusion cyst (n = 22), and reactive mesothelial hyperplasia (n = 18)...
November 11, 2016: Histopathology
https://www.readbyqxmd.com/read/27847212/egfr-dependent-signalling-reduced-and-p38-dependent-apoptosis-required-by-gallic-acid-in-malignant-mesothelioma-cells
#16
Asuman Demiroglu-Zergeroglu, Gulsife Candemir, Ebru Turhanlar, Fatma Sagir, Nurettin Ayvali
The unrestrained EGFR signalling contributes to malignant phenotype in a number of cancers including Malignant Mesotheliomas. Present study was designed to evaluate EGFR-dependent anti-proliferative and apoptotic effects of Gallic acid in transformed Mesothelial (MeT-5A) and Malignant Mesothelioma (SPC212) cells. Gallic acid reduced the viability of Malignant Mesothelioma cells in a concentration and time-dependent manner. However, viability of mesothelial cells reduced only at high concentration and longer time periods...
December 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27835874/malignant-pleural-mesothelioma-and-mesothelial-hyperplasia-a-new-molecular-tool-for-the-differential-diagnosis
#17
Rossella Bruno, Greta Alì, Riccardo Giannini, Agnese Proietti, Marco Lucchi, Antonio Chella, Franca Melfi, Alfredo Mussi, Gabriella Fontanini
Malignant pleural mesothelioma (MPM) is a rare asbestos related cancer, aggressive and unresponsive to therapies. Histological examination of pleural lesions is the gold standard of MPM diagnosis, although it is sometimes hard to discriminate the epithelioid type of MPM from benign mesothelial hyperplasia (MH).This work aims to define a new molecular tool for the differential diagnosis of MPM, using the expression profile of 117 genes deregulated in this tumour.The gene expression analysis was performed by nanoString System on tumour tissues from 36 epithelioid MPM and 17 MH patients, and on 14 mesothelial pleural samples analysed in a blind way...
November 7, 2016: Oncotarget
https://www.readbyqxmd.com/read/27813512/genomic-profiling-of-malignant-peritoneal-mesothelioma-reveals-recurrent-alterations-in-epigenetic-regulatory-genes-bap1-setd2-and-ddx3x
#18
Nancy M Joseph, Yunn-Yi Chen, Anthony Nasr, Iwei Yeh, Eric Talevich, Courtney Onodera, Boris C Bastian, Joseph T Rabban, Karuna Garg, Charles Zaloudek, David A Solomon
Malignant mesothelioma is a rare cancer that arises from the mesothelial cells that line the pleural cavity and less commonly from the peritoneal lining of the abdomen and pelvis. Most pleural mesotheliomas arise in patients with a history of asbestos exposure, whereas the association of peritoneal mesotheliomas with exposure to asbestos and other potential carcinogens is less clear, suggesting that the genetic alterations that drive malignant peritoneal mesothelioma may be unique from those in pleural mesothelioma...
November 4, 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27807064/mechanisms-and-targets-involved-in-dissemination-of-ovarian-cancer
#19
REVIEW
Ulrich H Weidle, Fabian Birzele, Gwendlyn Kollmorgen, Rüdiger Rueger
Ovarian carcinoma is associated with the highest death rate of all gynecological tumors. On one hand, its aggressiveness is based on the rapid dissemination of ovarian cancer cells to the peritoneum, the omentum, and organs located in the peritoneal cavity, and on the other hand, on the rapid development of resistance to chemotherapeutic agents. In this review, we focus on the metastatic process of ovarian cancer, which involves dissemination of, homing to and growth of tumor cells in distant organs, and describe promising molecular targets for possible therapeutic intervention...
November 2016: Cancer Genomics & Proteomics
https://www.readbyqxmd.com/read/27775699/susd2-expression-in-high-grade-serous-ovarian-cancer-correlates-with-increased-patient-survival-and-defective-mesothelial-clearance
#20
J N Sheets, M Iwanicki, J F Liu, B E Howitt, M S Hirsch, J A A Gubbels, R Drapkin, K A Egland
The cause of death among the majority of epithelial ovarian cancer (EOC) patients involves passive dissemination of cancer cells within the peritoneal cavity and subsequent implantation of cancer spheroids into adjacent organs. Thus, it is important to identify the factors that mediate EOC metastasis and implantation, including clearance of the mesothelium. Sushi domain containing 2 (SUSD2) encodes a type I transmembrane protein containing several functional domains inherent to adhesion molecules. Immunohistochemical analysis determined the presence of SUSD2 in several subtypes of EOC, with the strongest staining observed in high-grade serous ovarian carcinomas (HGSOCs)...
October 24, 2016: Oncogenesis
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