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https://www.readbyqxmd.com/read/28323210/the-protective-activity-of-mesothelial-cells-against-peritoneal-growth-of-gastrointestinal-tumors-the-role-of-soluble-icam-1
#1
Justyna Mikuła-Pietrasik, Paweł Uruski, Małgorzata Kucińska, Andrzej Tykarski, Krzysztof Książek
In this project we examined how the presence of human peritoneal mesothelial cells (HPMCs) modifies (supports or inhibits) colorectal and pancreatic cancer cell progression in mice peritoneal cavity. Experiments were performed using primary, omentum-derived HPMCs, commercially available colorectal (SW-480) and pancreatic (PSN-1) cancer cells, and immunocompromised SCID mice. Tumor growth within the peritoneal cavity was monitored using bioluminescence. Adhesion of the cancer cells to HPMCs was examined using a fluorescence-based method, while the incidence of apoptosis was quantified using flow cytometry...
March 17, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28298211/fty720-inhibits-mesothelioma-growth-in-vitro-and-in-a-syngeneic-mouse-model
#2
Agata Szymiczek, Sandra Pastorino, David Larson, Mika Tanji, Laura Pellegrini, Jiaming Xue, Shuangjing Li, Carlotta Giorgi, Paolo Pinton, Yasutaka Takinishi, Harvey I Pass, Hideki Furuya, Giovanni Gaudino, Andrea Napolitano, Michele Carbone, Haining Yang
BACKGROUND: Malignant mesothelioma (MM) is a very aggressive type of cancer, with a dismal prognosis and inherent resistance to chemotherapeutics. Development and evaluation of new therapeutic approaches is highly needed. Immunosuppressant FTY720, approved for multiple sclerosis treatment, has recently raised attention for its anti-tumor activity in a variety of cancers. However, its therapeutic potential in MM has not been evaluated yet. METHODS: Cell viability and anchorage-independent growth were evaluated in a panel of MM cell lines and human mesothelial cells (HM) upon FTY720 treatment to assess in vitro anti-tumor efficacy...
March 15, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28287578/modeling-ovarian-cancer-multicellular-spheroid-behavior-in-a-dynamic-3d-peritoneal-microdevice
#3
Shan-Shan Li, Carman K M Ip, Matthew Y H Tang, Samuel K H Sy, Susan Yung, Tak-Mao Chan, Mengsu Yang, Ho Cheung Shum, Alice S T Wong
Ovarian cancer is characterized by extensive peritoneal metastasis, with tumor spheres commonly found in the malignant ascites. This is associated with poor clinical outcomes and currently lacks effective treatment. Both the three-dimensional (3D) environment and the dynamic mechanical forces are very important factors in this metastatic cascade. However, traditional cell cultures fail to recapitulate this natural tumor microenvironment. Thus, in vivo-like models that can emulate the intraperitoneal environment are of obvious importance...
February 18, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28285055/the-role-of-routine-peritoneal-and-omental-biopsies-at-risk-reducing-salpingo-oophorectomy
#4
Heather Miller, Laura S Pipkin, Celestine Tung, Tracilyn R Hall, Ramya P Masand, Matthew L Anderson
STUDY OBJECTIVE: Assess the potential role of peritoneal and omental biopsies in women undergoing risk-reducing salpingo-oopherectomy (RRSO) for prophylactic management of hereditary breast/ovarian cancer syndromes (HBOC). DESIGN: Retrospective observational cohort DESIGN: Classification: II.1 SETTING: Academic gynecology practice PATIENTS: All women who underwent RRSO for a high risk BRCA1/2 mutation or deletion at a single institution between January, 2003 and June, 2016...
March 8, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28278257/inhibition-of-h3k9-methyltransferase-g9a-ameliorates-methylglyoxal-induced-peritoneal-fibrosis
#5
Kazuya Maeda, Shigehiro Doi, Ayumu Nakashima, Takuo Nagai, Taisuke Irifuku, Toshinori Ueno, Takao Masaki
Activity of H3K9 histone methyltransferase G9a is reportedly induced by transforming growth factor-β1 (TGF-β1) and plays an important role in the progression of cancer and fibrosis. In this study, we investigated whether inhibition of G9a-mediated H3K9 methylation attenuates peritoneal fibrosis in mice and human peritoneal mesothelial cells (HPMCs). Nonadherent cells of peritoneal dialysis (PD) patients were isolated from PD effluent to examine expression of G9a. Peritoneal fibrosis was induced by peritoneal injection of methylglyoxal (MGO) in male C57/B6 mice for 3 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28275576/the-unique-molecular-and-cellular-microenvironment-of-ovarian-cancer
#6
REVIEW
Thomas Worzfeld, Elke Pogge von Strandmann, Magdalena Huber, Till Adhikary, Uwe Wagner, Silke Reinartz, Rolf Müller
The reciprocal interplay of cancer cells and host cells is an indispensable prerequisite for tumor growth and progression. Cells of both the innate and adaptive immune system, in particular tumor-associated macrophages (TAMs) and T cells, as well as cancer-associated fibroblasts enter into a malicious liaison with tumor cells to create a tumor-promoting and immunosuppressive tumor microenvironment (TME). Ovarian cancer, the most lethal of all gynecological malignancies, is characterized by a unique TME that enables specific and efficient metastatic routes, impairs immune surveillance, and mediates therapy resistance...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28263384/mesothelium-expression-of-vascular-cell-adhesion-molecule-1-vcam-1-is-associated-with-an-unfavorable-prognosis-in-epithelial-ovarian-cancer-eoc
#7
Jennifer M Scalici, Sanja Arapovic, Erin J Saks, Kristen A Atkins, Gina Petroni, Linda R Duska, Jill K Slack-Davis
BACKGROUND: Mesothelium vascular cell adhesion molecule-1 (VCAM-1) expression in the metastatic epithelial ovarian cancer (EOC) microenvironment is induced by tumor and mediates tumor cell invasion. VCAM-1 imaging suggests expression during treatment is an indicator of platinum resistance. Here, we assess the potential prognostic significance of mesothelium VCAM-1 expression and prospectively evaluate whether soluble VCAM-1 (sVCAM-1) is a surrogate for mesothelium expression. METHODS: A retrospective review of EOC patients was performed to evaluate outcomes with mesothelium VCAM-1 expression determined by immunohistochemistry of peritoneum or omentum specimens...
May 15, 2017: Cancer
https://www.readbyqxmd.com/read/28262727/malignant-extracellular-vesicles-carrying-mmp1-mrna-facilitate-peritoneal-dissemination-in-ovarian-cancer
#8
Akira Yokoi, Yusuke Yoshioka, Yusuke Yamamoto, Mitsuya Ishikawa, Shun-Ichi Ikeda, Tomoyasu Kato, Tohru Kiyono, Fumitaka Takeshita, Hiroaki Kajiyama, Fumitaka Kikkawa, Takahiro Ochiya
Advanced ovarian cancers are highly metastatic due to frequent peritoneal dissemination, resulting in dismal prognosis. Here we report the functions of cancer-derived extracellular vesicles (EVs), which are emerging as important mediators of tumour metastasis. The EVs from highly metastatic cells strongly induce metastatic behaviour in moderately metastatic tumours. Notably, the cancer EVs efficiently induce apoptotic cell death in human mesothelial cells in vitro and in vivo, thus resulting in the destruction of the peritoneal mesothelium barrier...
March 6, 2017: Nature Communications
https://www.readbyqxmd.com/read/28247413/mesothelial-to-mesenchymal-transition-as-a-possible-therapeutic-target-in-peritoneal-metastasis-of-ovarian-cancer
#9
Angela Rynne-Vidal, Chi Lam Au-Yeung, José A Jiménez-Heffernan, María Luisa Pérez-Lozano, Lucía Cremades-Jimeno, Carmen Bárcena, Ignacio Cristóbal-García, Concepción Fernández-Chacón, Tsz Lun Yeung, Samuel C Mok, Pilar Sandoval, Manuel López-Cabrera
Peritoneal dissemination is the primary metastatic route of ovarian cancer (OvCa), often accompanied by accumulation of ascitic fluid. The peritoneal cavity is lined by mesothelial cells (MCs), which can convert into carcinoma-associated fibroblasts (CAFs) through mesothelial-to-mesenchymal transition (MMT). Here, we demonstrate that MCs isolated from ascitic fluid (AFMCs) of OvCa patients with peritoneal implants also undergo MMT and promote subcutaneous tumour growth in mice. RNA sequencing of AFMCs revealed that MMT-related pathways-including TGF-β signalling-are differentially regulated, and a gene signature was verified in peritoneal implants from OvCa patients...
March 1, 2017: Journal of Pathology
https://www.readbyqxmd.com/read/28238418/foxa1-is-expressed-in-ovarian-mucinous-neoplasms
#10
Georgia Karpathiou, Melany Venet, Mousa Mobarki, Fabien Forest, Celine Chauleur, Michel Peoc'h
FOXA1 is a transcription factor essential for the binding and action of other transcription factors on the chromatin. It is the major regulator of endoderm differentiation. It has important roles in breast, prostate and endometrial cancer. It has never been studied in ovarian tumours. The aim of this study was to investigate its expression in ovarian epithelial neoplasms. A total of 195 primary ovarian epithelial borderline or malignant tumours were immunohistochemically studied for the expression of FOXA1...
February 23, 2017: Pathology
https://www.readbyqxmd.com/read/28223509/high-throughput-screening-of-rare-metabolically-active-tumor-cells-in-pleural-effusion-and-peripheral-blood-of-lung-cancer-patients
#11
Yin Tang, Zhuo Wang, Ziming Li, Jungwoo Kim, Yuliang Deng, Yan Li, James R Heath, Wei Wei, Shun Lu, Qihui Shi
Malignant pleural effusion (MPE), the presence of malignant cells in pleural fluid, is often the first sign of many cancers and occurs in patients with metastatic malignancies. Accurate detection of tumor cells in pleural fluid is crucial because the presence of MPE denotes an advanced stage of disease and directs a switch in clinical managements. Cytology, as a traditional diagnostic tool, has limited sensitivity especially when tumor cells are not abundant, and may be confounded by reactive mesothelial cells in the pleural fluid...
March 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28197626/kdm6a-and-kdm6b-altered-expression-in-malignant-pleural-mesothelioma
#12
Sian Cregan, Maeve Breslin, Gerard Roche, Sigrid Wennstedt, Lauren MacDonagh, Cinaria Albadri, Yun Gao, Kenneth J O'Byrne, Sinead Cuffe, Stephen P Finn, Steven G Gray
Malignant pleural mesothelioma (MPM) is a rare aggressive cancer of the pleura primarily associated with prior exposure to asbestos. The current standard of care for patients suffering from MPM is a combination of cisplatin and pemetrexed (or alternatively cisplatin and raltitrexed). Most patients, however, die within 24 months of diagnosis. New therapies are therefore urgently required for this disease. Inflammation is thought to be a key element in the pathogenesis of MPM, and recently Kdm6 family members (Kdm6a and Kdm6b) have been identified as playing important roles in inflammatory processes...
March 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28196410/mesothelin-expression-in-gastric-adenocarcinoma-and-its-relation-to-clinical-outcomes
#13
Song-Hee Han, Mee Joo, Hanseong Kim, Sunhee Chang
BACKGROUND: Although surgical resection with chemotherapy is considered effective for patients with advanced gastric cancer, it remains the third leading cause of cancer-related death in South Korea. Several studies have reported that mesothelial markers including mesothelin, calretinin, and Wilms tumor protein 1 (WT1) were positive in variable carcinomas, associated with prognosis, and were evaluated as potential markers for targeted therapy. The aim of this study was to assess the immunohistochemical expression of mesothelial markers (mesothelin, calretinin, and WT1) in gastric adenocarcinoma and their relations to clinocopathological features and prognosis...
March 2017: Journal of Pathology and Translational Medicine
https://www.readbyqxmd.com/read/28195084/calretinin-expression-as-a-reliable-prognostic-marker-in-different-molecular-subtypes-of-breast-carcinoma
#14
Mayada Saad Farrag, Amro Awad El-Karef, Maha Mohammed Amin, Nagwa Mokhtar Helal, Omar Farouk Ali, Nesrine Saad Farrag
BACKGROUND: Calretinin (CR), a known mesothelial marker, is expressed in both epithelial and mesenchymal malignancies including breast cancer. AIMS: We aimed to measure the frequency of CR expression in correlation with other clinicopathological parameters of different molecular subtypes of invasive breast carcinoma and to study its prognostic implications in this common cancer. STUDY DESIGN: Tissue microarrays were constructed from 225 tissue samples of breast carcinoma cases...
January 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28191281/switching-off-malignant-mesothelioma-exploiting-the-hypoxic-microenvironment
#15
REVIEW
Noushin Nabavi, Kevin L Bennewith, Andrew Churg, Yuzhuo Wang, Colin C Collins, Luciano Mutti
Malignant mesotheliomas are aggressive, asbestos-related cancers with poor patient prognosis, typically arising in the mesothelial surfaces of tissues in pleural and peritoneal cavity. The relative unspecific symptoms of mesotheliomas, misdiagnoses, and lack of precise targeted therapies call for a more critical assessment of this disease. In the present review, we categorize commonly identified genomic aberrations of mesotheliomas into their canonical pathways and discuss targeting these pathways in the context of tumor hypoxia, a hallmark of cancer known to render solid tumors more resistant to radiation and most chemo-therapy...
November 2016: Genes & Cancer
https://www.readbyqxmd.com/read/28185919/rheostatic-cd44-isoform-expression-and-its-association-with-oxidative-stress-in-human-malignant-mesothelioma
#16
Shan Hwu Chew, Yasumasa Okazaki, Shinya Akatsuka, Shenqi Wang, Li Jiang, Yuuki Ohara, Fumiya Ito, Hideyuki Saya, Yoshitaka Sekido, Shinya Toyokuni
CD44 exists as a standard (CD44s) isoform and different variant isoforms (CD44v) due to alternative splicing. While the complex nature of these different isoforms has not been fully elucidated, CD44v expression has been shown to exert oncogenic effects by promoting tumor progression, metastasis and resistance of tumor cells to chemotherapy. One of the CD44v isoforms, CD44v8-10, was recently shown to protect cancer cells from oxidative stress by increasing the synthesis of glutathione (GSH). However, data regarding CD44 isoform expression in malignant mesothelioma (MM) are still lacking...
February 6, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28160193/correlation-between-tumor-mesothelin-expression-and-serum-mesothelin-in-patients-with-epithelial-ovarian-carcinoma-a-potential-noninvasive-biomarker-for-mesothelin-targeted-therapy
#17
Tatsuya Hanaoka, Kosei Hasegawa, Tomomi Kato, Sho Sato, Akira Kurosaki, Akiko Miyara, Shoji Nagao, Hiroyuki Seki, Masanori Yasuda, Keiichi Fujiwara
BACKGROUND: The cell surface glycoprotein mesothelin is highly expressed in several malignant diseases. Normal mesothelin expression is limited to mesothelial cells lining the pleura, peritoneum, and pericardium, making it a biomarker and an attractive target for cancer therapy. METHODS: We investigated tumor mesothelin expression and serum mesothelin levels in patients with epithelial ovarian cancer or borderline tumors. In total, 161 patients selected from a previous prospective study were analyzed for tumor mesothelin expression using immunohistochemistry and serum mesothelin expression using enzyme-linked immunosorbent assay...
February 3, 2017: Molecular Diagnosis & Therapy
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
#18
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...
April 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
#19
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
#20
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
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