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Abd Al-Rahman Mohammad Foda, Mie Ali Mohammad, Azza Abdel-Aziz, Amira Kamal El-Hawary
No abstract text is available yet for this article.
February 2016: Pathology
Kwong-Fai Wong, Angela M Liu, Wanjin Hong, Zhi Xu, John M Luk
The Hippo pathway regulates the down-stream target Yes-associated protein (YAP) to maintain organ homeostasis, which is commonly inactivated in many types of cancers. However, how cell adhesion dysregulates the Hippo pathway activating YAP oncogene in hepatocellular carcinoma (HCC) remains unclear. Our findings demonstrate that α2β1 integrin (but not other β1 integrins) expressed in HCC cells, after binding to collagen extracellular matrix, could inhibit MST1 kinase phosphorylation and activate YAP pro-oncogenic activities...
October 19, 2016: Oncotarget
Kévin Ly, Rachid Essalmani, Roxane Desjardins, Nabil G Seidah, Robert Day
The mechanism of LDL receptor (LDLR) degradation mediated by the proprotein convertase subtilisin/kexin type 9 (PCSK9) has been extensively studied, however many steps within this process remain unclear and still require characterization. Recent studies have shown that PCSK9 lacking its Cys/His-rich domain can still promote LDLR internalization, but the complex does not reach the lysosome suggesting the presence of an additional interaction partner(s). In the present study we carried out an unbiased screening approach to identify PCSK9 interacting proteins in the HepG2 cells' secretome using co-immunoprecipitation combined with mass spectrometry analyses...
October 7, 2016: Journal of Biological Chemistry
Hanaa H Ahmed, Wafaa Gh Shousha, Hatem A El-Mezayen, Sayed A El-Toumy, Alaa H Sayed, Aesha R Ramadan
Hepatocellular carcinoma (HCC) is one of the deadliest primary cancers, with a 5-year survival rate of 10% or less. This study was undertaken to elucidate the underlying biochemical and molecular mechanisms in favor of N-nitrosodiethylamine-induced hepatocellular carcinoma. Furthermore, the aim of this work was extended to explore the efficacy of Ginkgo biloba leaves extract in deterioration of HCC in rats. In the current study, HCC group experienced significant downregulation of ING-3 gene expression and upregulation of Foxp-1 gene expression in liver...
October 14, 2016: Acta Biochimica Polonica
Alessandro Vaisfeld, Maria Grazia Pomponi, Roberta Pietrobono, Elisabetta Tabolacci, Giovanni Neri
Simpson-Golabi-Behmel syndrome is an X-linked recessive overgrowth condition caused by alterations in GPC3 gene, encoding for the cell surface receptor glypican 3, whose clinical manifestations in affected males are well known. Conversely, there is little information regarding affected females, with very few reported cases, and a clinical definition of this phenotype is still lacking. In the present report we describe an additional case, the first to receive a primary molecular diagnosis based on strong clinical suspicion...
October 14, 2016: American Journal of Medical Genetics. Part A
Yejoo Jeon, Eun Sun Jang, Yun Suk Choi, Jin-Wook Kim, Sook-Hyang Jeong
BACKGROUND/AIMS: Glypican-3 (GPC3) protein is highly expressed in hepatocellular carcinoma (HCC) tissue. It has been suggested as a diagnostic biomarker, but its inconsistent performance means that it requires further assessment. We therefore investigated the diagnostic value of the plasma GPC3 level compared to the alpha-fetoprotein (AFP) level as a diagnostic biomarker of HCC. METHODS: We enrolled 157 consecutive patients with newly diagnosed HCC and 156 patients with liver cirrhosis (LC) as the control group...
September 2016: Clinical and Molecular Hepatology
Aixian Zheng, Xiaolong Zhang, Ju Gao, Xiaolong Liu, Jingfeng Liu
Glypican-3 (GPC3) might be used as new biomarker of liver cancer for the development of new diagnostic methods. The most commonly used methods for protein detection are based on natural enzymes, which are easily affected by environmental conditions and suffer from the rigorous preparation conditions. Thus, the development of new enzyme mimetics with high and stable catalytic activity is of great significance in diagnostic applications. In this paper, copper ions (Cu(2+)) was found to possess the peroxidase-like catalytic activity, which can catalyze H2O2-mediated oxidation of peroxidase substrate and obtain the oxidation product with color change...
October 19, 2016: Analytica Chimica Acta
Hongliang Yao, Zhulin Yang, Ziru Liu, Xiongying Miao, Leping Yang, Daiqiang Li, Qiong Zou, Yuan Yuan
OBJECTIVE: Pancreatic ductal adenocarcinoma (PDAC) is a highly malignant tumor with metastasis in most patients at diagnosis. The molecular mechanisms associated with its high malignancy have not been fully elucidated. This study investigated the clinicopathological significances of GPC3 and KRT19 expression in PDAC. METHODS: GPC3, KRT19, and CA19-9 protein expression were measured by immunohistochemistry. RESULTS: GPC3 and KRT19 protein levels were overexpressed in PDAC tumors compared to normal pancreatic tissues, benign pancreatic tissues, and peritumoral tissues (P< 0...
September 22, 2016: Cancer Biomarkers: Section A of Disease Markers
Kohei Matsumoto, Hiroya Ueyama, Kenshi Matsumoto, Yoichi Akazawa, Hiroyuki Komori, Tsutomu Takeda, Takashi Murakami, Daisuke Asaoka, Mariko Hojo, Natsumi Tomita, Akihito Nagahara, Yoshiaki Kajiyama, Takashi Yao, Sumio Watanabe
AIM: To investigate clinicopathological features of early stage gastric cancer with enteroblastic differentiation (GCED). METHODS: We retrospectively investigated data on 6 cases of early stage GCED and 186 cases of early stage conventional gastric cancer (CGC: well or moderately differentiated adenocarcinoma) who underwent endoscopic submucosal dissection or endoscopic mucosal resection from September 2011 to February 2015 in our hospital. GCED was defined as a tumor having a primitive intestine-like structure composed of cuboidal or columnar cells with clear cytoplasm and immunohistochemical positivity for either alpha-fetoprotein, Glypican 3 or SALL4...
September 28, 2016: World Journal of Gastroenterology: WJG
Bryan D Fleming, Mitchell Ho
Hepatocellular carcinoma (HCC) is the most common form of primary liver cancer, yet no effective therapeutics exist. This review provides an overview of the recent development of recombinant immunotoxins for the treatment of glypican-3 (GPC3) expressing HCC. GPC3 is a cell surface heparan sulfate proteoglycan that is overexpressed in HCC, but is absent from normal adult human tissues. Treatment of HCC with anti-GPC3 immunotoxins represents a new therapeutic option. Using phage display and hybridoma technologies, three high affinity antibodies (HN3, HS20 and YP7) have been generated against GPC3...
2016: Toxins
Yi-Fan Zhang, Mitchell Ho
Glypican-3 (GPC3) is a cell-surface heparan sulfate proteoglycan highly expressed in hepatocellular carcinoma (HCC). We have generated a group of high-affinity mouse monoclonal antibodies targeting GPC3. Here, we report the humanization and testing of these antibodies for clinical development. We compared the affinity and cytotoxicity of recombinant immunotoxins containing mouse single-chain variable regions fused with a Pseudomonas toxin. To humanize the mouse Fvs, we grafted the combined KABAT/IMGT complementarity determining regions (CDR) into a human IgG germline framework...
September 26, 2016: Scientific Reports
Théophile Vissiennon, Markus Freick, Ergin Kilic, Thomas Schmidt, Sven Dänicke, Marion Schmicke, Eckard Schneider
Congenital testicular tumours are seldom reported in bovine species. This case report describes the clinical, sonographical, haematological, pathomorphological and immunohistological features of a Sertoli cell tumour in a neonatal German Holstein calf. Microscopically, the enlarged testicle was composed of neoplastic cells, which were packed in well-formed tubules. The mostly polygonal shaped cells had round to elongated nuclei and a scanty eosinophilic cytoplasm. Some cells were arranged perpendicularly to the light PAS-positive basement membrane...
September 21, 2016: Tierärztliche Praxis. Ausgabe G, Grosstiere/Nutztiere
Ramon Barreto Mendes, Rosane Borges Dias, Andreia Leal Figueiredo, Clarissa Araújo Gurgel, Manoel Santana Filho, Leonardo Araújo Melo, Marília Trierveiler, Patrícia Ramos Cury, Rosalia Leonardi, Jean Nunes Dos Santos
BACKGROUND: Glypican-3 is a cell surface proteoglycan that is found in embrionary tissues, and there are no studies investigating this protein in odontogenic tumor. Thus, the aim of this study was to investigate glypican-3 in a series of aggressive and non-aggressive odontogenic tumors. METHODS: Fifty-nine cases of tumors were divided into aggressive odontogenic tumors (20 solid ameloblastomas, four unicystic ameloblastoma, 28 KOTs including five associated with Gorlin-Goltz syndrome) and non-aggressive odontogenic tumors (five adenomatoid odontogenic tumors and two calcifying cystic odontogenic tumors) and analyzed for glypican-3 using immunohistochemistry...
September 20, 2016: Journal of Oral Pathology & Medicine
Annikka Weissferdt, Neda Kalhor, Jaime Rodriguez Canales, Junya Fujimoto, Ignacio I Wistuba, Cesar A Moran
Primary mediastinal germ cell tumors are uncommon tumors that can pose diagnostic difficulties due to their morphologic spectrum and unusual site. Immunohistochemistry plays an increasing role in the diagnosis of these tumors. Whereas the immunophenotype of testicular yolk sac tumors (YST) is rather well known, the opposite is true for primary mediastinal YST leading us to investigate the immunohistochemical features of 14 such neoplasms. Fourteen cases of primary mediastinal YST were reviewed and representative whole tissue sections were selected for immunohistochemical analysis using antibodies directed against CAM5...
September 16, 2016: Applied Immunohistochemistry & Molecular Morphology: AIMM
Chang-Jiang Lei, Chun Yao, De-Ke Li, Zhi-Xiong Long, Yuan Li, Dan Tao, Yan-Ping Liou, Jiang-Zhou Zhang, Ning Liu
OBJECTIVE: To investigate the effects of co-transfection of miR-520c-3p and miR-132 on proliferation and apoptosis of hepatocellular carcinoma Huh7. METHODS: Hepatocellular carcinoma Huh7 was cultured in vitro and lipidosome was used to transfect miR-520c-3p and miR-132, respectively or together. The effects of transfection of miR-520c-3p and miR-132 on proliferation and apoptosis of Huh7 were detected by CCK8 and Annexin V staining and flow cytometry, and the expression level of the targeted gene of over-expressed miR-520c-3p and miR-132 was determined by Western blot and realtime PCR...
September 2016: Asian Pacific Journal of Tropical Medicine
Sanjita Ravishankar, Anais Malpica, Preetha Ramalingam, Elizabeth D Euscher
We present the clinicopathologic features of 15 cases of extragonadal yolk sac tumor (EGYST) detected in female patients and reviewed at our institution from 1988 to 2016. We recorded: patient age, clinical presentation, tumor location, FIGO stage (where applicable), histologic patterns including presence/absence of Schiller-Duval bodies, other germ cell or somatic components, immunoperoxidase results, treatment, and outcome. Patients' ages ranged from 17 to 87 (median, 62) years and presentation included: abnormal uterine bleeding, 12; hematuria, 1; labial mass, 1; abdominal pain, 1...
September 14, 2016: American Journal of Surgical Pathology
Liqin Zhang, Zunyi Yang, Thu Le Trinh, I-Ting Teng, Sai Wang, Kevin M Bradley, Shuichi Hoshika, Qunfeng Wu, Sena Cansiz, Diane J Rowold, Christopher McLendon, Myong-Sang Kim, Yuan Wu, Cheng Cui, Yuan Liu, Weijia Hou, Kimberly Stewart, Shuo Wan, Chen Liu, Steven A Benner, Weihong Tan
Laboratory in vitro evolution (LIVE) might deliver DNA aptamers that bind proteins expressed on the surface of cells. In this work, we used cell engineering to place glypican 3 (GPC3), a possible marker for liver cancer theranostics, on the surface of a liver cell line. Libraries were then built from a six-letter genetic alphabet containing the standard nucleobases and two added nucleobases (2-amino-8H-imidazo[1,2-a][1,3,5]triazin-4-one and 6-amino-5-nitropyridin-2-one), Watson-Crick complements from an artificially expanded genetic information system (AEGIS)...
September 26, 2016: Angewandte Chemie
Qian Zhao, Wen-Long Yu, Xin-Yuan Lu, Hui Dong, Yi-Jin Gu, Xia Sheng, Wen-Ming Cong, Meng-Chao Wu
BACKGROUND: Combined hepatocellular and cholangiocarcinoma (CHC) is a unique subtype of liver cancer comprising both hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (ICC); however, its cellular origin remains unclear. The purpose of this study was to investigate the clinicopathologic features and the clonal relationship between HCC and ICC in 34 patients with CHC. METHODS: The clinicopathologic features and prognosis of the 34 CHC patients were compared with those of 29 patients with separated HCC and ICC (SHC)...
2016: Chinese Journal of Cancer
Wenpeng Li, Linjie Guo, Purva Rathi, Ekaterina Marinova, Xiuhua Gao, Meng-Feng Wu, Hao Liu, Gianpietro Dotti, Stephen Gottschalk, Leonid S Metelitsa, Andras Heczey
T cells engineered to express CD19-specific chimeric antigen receptors (CARs) have shown breakthrough clinical successes in patients with B-cell lymphoid malignancies. However, similar therapeutic efficacy of CAR T cells in solid tumors is yet to be achieved. In this study we systematically evaluated a series of CAR constructs targeting glypican-3 (GPC3), which is selectively expressed on several solid tumors. We compared GPC3-specific CARs that encoded CD3ζ (Gz) alone or with costimulatory domains derived from CD28 (G28z), 4-1BB (GBBz), or CD28 and 4-1BB (G28BBz)...
August 16, 2016: Human Gene Therapy
Lilian Fedra Castillo, Rocío Tascón, María Amparo Lago Huvelle, Gisela Novack, María Candelaria Llorens, Ancely Ferreira Dos Santos, Jorge Shortrede, Ana María Cabanillas, Elisa Bal de Kier Joffé, Leticia Labriola, María Giselle Peters
Breast cancer is the disease with the highest impact on global health, being metastasis the main cause of death. To metastasize, carcinoma cells must reactivate a latent program called epithelial-mesenchymal transition (EMT), through which epithelial cancer cells acquire mesenchymal-like traits.Glypican-3 (GPC3), a proteoglycan involved in the regulation of proliferation and survival, has been associated with cancer. In this study we observed that the expression of GPC3 is opposite to the invasive/metastatic ability of Hs578T, MDA-MB231, ZR-75-1 and MCF-7 human breast cancer cell lines...
August 6, 2016: Oncotarget
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