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https://www.readbyqxmd.com/read/28722341/proteomic-analysis-of-neuroblastoma-derived-exosomes-new-insights-into-a-metastatic-signature
#1
Marta Colletti, Andrea Petretto, Angela Galardi, Virginia Di Paolo, Luigi Tomao, Chiara Lavarello, Elvira Inglese, Maurizio Bruschi, Ana Amor Lopez, Luisa Pascucci, Birgit Geoerger, Hector Peinado, Locatelli Franco, Di Giannatale Angela
Neuroblastoma (NB) is the most common extracranial pediatric solid tumor. Around 70% of patients with metastatic disease at diagnosis present bone-marrow infiltration, which is considered a marker of poor outcome; however, the mechanism underlying this specific tropism has to be elucidated. Tumor-derived exosomes may support metastatic progression in several tumors by interacting with the microenvironment, and may serve as tumor biomarkers. The main objective of this study was to identify an exosomal signature associated with NB metastatic bone-marrow dissemination...
July 19, 2017: Proteomics
https://www.readbyqxmd.com/read/28717298/ameloblastic-carcinoma-a-rare-malignant-tumour-in-maxillofacial-region
#2
Pushkar Devidas Gawande, Kiran Khande, Gaurav Agrawal, Amita Aditya
Ameloblastic carcinoma (AC) is a rare malignant odontogenic tumor with poor prognosis. It has an aggressive clinical course with extensive local destruction. It occurs primarily in the mandible. It may clinically present as a cystic lesion with benign clinical feature or as a large mass with ulceration, significant bone resorption and mobility of teeth in the affected region. Reliable evidence of it's biological activity along with extensive local destruction, direct extension of tumor, lymph node involvement and metastasis to various sites (frequently lung) have been reported...
September 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28714003/microrna%C3%A2-130a-inhibits-growth-and-metastasis-of-osteosarcoma-cells-by-directly-targeting-zeb1
#3
Lankai Yi, Meixiu Liu, Zhiliang Tang
Osteosarcoma (OS) is the most common malignant bone tumor in children and adolescents. microRNAs (miRNAs) have previously been reported to be involved in the carcinogenesis and progression of OS, and may be useful prognostic markers or therapeutic targets for patients with OS. miRNA‑130a has been previously studied in multiple types of human cancer. However, its expression and function in OS has not been well documented. The aim of the present study was to investigate the expression, biological functions and molecular mechanisms underlying the effect of miR‑130a in OS...
July 13, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28713950/microrna%C3%A2-302a-suppresses-cell-proliferation-migration-and-invasion-in-osteosarcoma-by-targeting-adam9
#4
Xiaoming Yang, Yan Cui, Fuqiang Yang, Chao Sun, Xuejian Gao
Osteosarcoma (OS) is the most frequent malignant primary bone tumor arising from primitive bone‑forming mesenchymal cells in children and adolescents. The dysregulation of microRNAs (miRNAs) has been reported in OS, and these aberrantly expressed miRNAs are involved in the initiation and progression of OS. The aim of the present study was to investigate the expression and functions of miRNA‑302a (miR‑302a) in OS and its underlying mechanism. It was found that the expression of miR‑302a was reduced in OS tissues and cell lines...
July 14, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28710714/disseminated-tumor-cells-are-not-associated-with-established-risk-factors-l1cam-immunoreactivity-and-outcome-in-endometrial-carcinoma
#5
Stefan Kommoss, Andreas D Hartkopf, Bernhard Krämer, Anne-Kathrin Bunz, Friederike Grevenkamp, Felix Kommoss, Jana Pasternak, Sabine M Arbabi, Markus Wallwiener, Annette Staebler, Sigurd F Lax, Sara Y Brucker, Florin-Andrei Taran
PURPOSE: The presence of disseminated tumor cells (DTC) in the bone marrow of endometrial carcinoma patients has been demonstrated previously. In contrast to breast cancer, no prognostic significance or association with clinicopathological features was revealed for endometrial carcinoma so far. The aim of this study was to investigate DTC in a large patient cohort with in-depth pathology review data available and to study DTC occurrence in the context of L1CAM and long-term disease specific follow-up...
July 14, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28708590/whole-exome-analysis-in-osteosarcoma-to-identify-a-personalized-therapy
#6
Caterina Chiappetta, Massimiliano Mancini, Francesca Lessi, Paolo Aretini, Veronica De Gregorio, Chiara Puggioni, Raffaella Carletti, Vincenzo Petrozza, Prospero Civita, Sara Franceschi, Antonio G Naccarato, Carlo Della Rocca, Chiara M Mazzanti, Claudio Di Cristofano
Osteosarcoma is the most common pediatric primary non-hematopoietic bone tumor. Survival of these young patients is related to the response to chemotherapy and development of metastases. Despite many advances in cancer research, chemotherapy regimens for osteosarcoma are still based on non-selective cytotoxic drugs. It is essential to investigate new specific molecular therapies for osteosarcoma to increase the survival rate of these patients. We performed exomic sequence analyses of 8 diagnostic biopsies of patients with conventional high grade osteosarcoma to advance our understanding of their genetic underpinnings and to correlate the genetic alteration with the clinical and pathological features of each patient to identify a personalized therapy...
July 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28698809/p-rex1-expression-in-invasive-breast-cancer-in-relation-to-receptor-status-and-distant-metastatic-site
#7
Jonathan D Marotti, Kristen E Muller, Laura J Tafe, Eugene Demidenko, Todd W Miller
BACKGROUND: Phosphatidylinositol-3,4,5-trisphosphate-dependent Rac exchange factor 1 (P-Rex1) has been implicated in cancer growth, metastasis, and response to phosphatidylinositol 3-kinase (PI3K) inhibitor therapy. The aim of this study was to determine whether P-Rex1 expression differs between primary and metastatic human breast tumors and between breast cancer subtypes. DESIGN: P-Rex1 expression was measured in 133 specimens by immunohistochemistry: 40 and 42 primary breast tumors from patients who did versus did not develop metastasis, respectively, and 51 breast-derived tumors from metastatic sites (36 of which had matching primary tumors available for analysis)...
2017: International Journal of Breast Cancer
https://www.readbyqxmd.com/read/28698458/integrin-%C3%AE-v%C3%AE-3-signaling-in-tumor-induced-bone-disease
#8
REVIEW
Kristin A Kwakwa, Julie A Sterling
Tumor-induced bone disease is common among patients with advanced solid cancers, especially those with breast, prostate, and lung malignancies. The tendency of these cancers to metastasize to bone and induce bone destruction is, in part, due to alterations in integrin expression and signaling. Substantial evidence from preclinical studies shows that increased expression of integrin αvβ3 in tumor cells promotes the metastatic and bone-invasive phenotype. Integrin αvβ3 mediates cell adhesion to several extracellular matrix proteins in the bone microenvironment which is necessary for tumor cell colonization as well as the transmission of mechanical signals for tumor progression...
July 8, 2017: Cancers
https://www.readbyqxmd.com/read/28698375/bmtp-11-is-active-in-preclinical-models-of-human-osteosarcoma-and-a-candidate-targeted-drug-for-clinical-translation
#9
Valerae O Lewis, Eswaran Devarajan, Marina Cardó-Vila, Dafydd G Thomas, Eugenie S Kleinerman, Serena Marchiò, Richard L Sidman, Renata Pasqualini, Wadih Arap
Osteosarcoma occurs predominantly in children and young adults. High-grade tumors require multidisciplinary treatment consisting of chemotherapy in the neoadjuvant and adjuvant settings, along with surgical intervention. Despite this approach, death from respiratory failure secondary to the development and progression of pulmonary metastases remains a significant problem. Here, we identify the IL-11 receptor α subunit (IL-11Rα) as a cell surface marker of tumor progression that correlates with poor prognosis in patients with osteosarcoma...
July 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28698141/epigenetic-silencing-of-the-wnt-antagonist-apcdd1-by-promoter-dna-hyper-methylation-contributes-to-osteosarcoma-cell-invasion-and-metastasis
#10
Weifeng Han, Junpeng Liu
Osteosarcoma (OS) is the most common type of bone tumor in children and adults. However, the molecular mechanism underlying OS tumorigenesis remains unclear. Here, we report that the expression of APCDD1, a Wnt antagonist, was reduced in OS tissues and cells compared to adjacent normal tissue and osteoblast cells, respectively. Mechanistically, this was due to increased levels of methylation in the promoter region of the APCDD1 gene. Consistently, the DNA methyltransferase inhibitor 5-AZA-dC, reduced DNA methylation in the APCDD1 promoter, and restored APCDD1 expression in OS tissue and cells...
July 8, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28694161/cxcr4-targeted-dendrimer-for-anti-cancer-drug-delivery-and-breast-cancer-cell-migration-inhibition
#11
Chuda Chittasupho, Songyot Anuchapreeda, Narong Sarisuta
CXCR4 and its ligand CXCL12 play a critical role in the metastasis of various types of cancer including breast cancer. Breast tumors preferentially metastasize to the lung, bones and distant lymph nodes, secreting high levels of CXCL12. We hypothesized that targeted inhibition of CXCR4 in breast cancer cells should suppress CXCR4-positive tumor cells toward secondary metastatic sites. In the present study, the efficacy of CXCR4 targeted dendrimers carrying DOX (LFC131-DOX-D4) on cellular binding, cytotoxicity, and migration of BT-549-Luc and T47D breast cancer cells was investigated...
July 7, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28693897/connexins-important-players-in-the-dissemination-of-prostate-cancer-cells
#12
REVIEW
Jonathan Boucher, Arnaud Monvoisin, Justine Vix, Marc Mesnil, Dominique Thuringer, Françoise Debiais, Laurent Cronier
Over the past 50 years, increasing experimental evidences have established that connexins (Cxs) and gap junctional intercellular communication (GJIC) ensure an important role in both the onset and development of cancerous processes. In the present review, we focus on the impact of Cxs and GJIC during the development of prostate cancer (PCa), from the primary growth mainly localized in acinar glands and ducts to the distant metastasis mainly concentrated in bone. As observed in several other types of solid tumours, Cxs and especially Cx43 exhibit an ambivalent role with a tumour suppressor effect in the early stages and, conversely, a rather pro-tumoral profile for most of invasion and dissemination steps to secondary sites...
July 7, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28693236/significance-of-cd47-expression-in-gastric-cancer
#13
Tomoya Sudo, Yusuke Takahashi, Genta Sawada, Ryutaro Uchi, Koshi Mimori, Yoshito Akagi
Integrin-associated protein (CD47) is ubiquitously expressed on the surface of cells and functions as an identifier of self. In blood cancer, tumor cells expressing CD47 evade phagocytosis by macrophages, leading to a poor patient prognosis. However, the status of CD47 expression in solid tumors, particularly in gastric cancer, is not well understood. The purpose of the present study was to examine the level of CD47 in the primary tumor, peripheral blood (PB) and bone marrow (BM) of patients with gastric cancer, and to determine its effect...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28690641/prostate-cancer-stem-cell-markers-drive-progression-therapeutic-resistance-and-bone-metastasis
#14
REVIEW
Koran S Harris, Bethany A Kerr
Metastatic or recurrent tumors are the primary cause of cancer-related death. For prostate cancer, patients diagnosed with local disease have a 99% 5-year survival rate; however, this 5-year survival rate drops to 28% in patients with metastatic disease. This dramatic decline in survival has driven interest in discovering new markers able to identify tumors likely to recur and in developing new methods to prevent metastases from occurring. Biomarker discovery for aggressive tumor cells includes attempts to identify cancer stem cells (CSCs)...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28690029/high-levels-of-soluble-gpr56-adgrg1-are-associated-with-positive-rheumatoid-factor-and-elevated-tumor-necrosis-factor-in-patients-with-rheumatoid-arthritis
#15
Wen-Yi Tseng, Yeong-Jian Jan Wu, Tai-Yun Yang, Nien-Yi Chiang, Wen-Pin Tsai, Siamon Gordon, Gin-Wen Chang, Chang-Fu Kuo, Shue-Fen Luo, Hsi-Hsien Lin
BACKGROUND: GPR56/ADGRG1 is a member of the adhesion-class G protein-coupled receptor (aGPCR) family important in brain development, oncogenesis and tumor metastasis. Like other aGPCRs, GPR56 is cleaved at the GPCR proteolysis site (GPS) motif into an N-terminal fragment (NTF) and a C-terminal fragment (CTF). Existence of soluble GPR56 (sGPR56) has been shown in vitro, however the underlying mechanism and its pathophysiologic role remains undetermined. OBJECTIVE: To assess the presence of sGPR56 in human serum using ELISA assay and compare the serum sGPR56 levels among patients of various chronic inflammatory diseases and healthy subjects...
June 28, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28685135/duodenal-gangliocytic-paraganglioma-with-lymph-node-metastases-a-case-report-and-comparative-review-of-31-cases
#16
Sahara J Cathcart, Aaron R Sasson, Jessica A Kozel, Jennifer M Oliveto, Quan P Ly
Gangliocytic paraganglioma (GP) is a rare tumor of uncertain origin most often located in the second portion of the duodenum. It is composed of three cellular components: Epithelioid endocrine cells, spindle-like/sustentacular cells, and ganglion-like cells. While this tumor most often behaves in a benign manner, cases with metastasis are reported. We describe the case of a 62-year-old male with a periampullary GP with metastases to two regional lymph nodes who was successfully treated with pancreaticoduodenectomy...
June 16, 2017: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/28685085/diffuse-fluorodeoxyglucose-positron-uptake-in-the-bone-marrow-of-a-patient-with-granulocyte-colony-stimulating-factor-producing-pleomorphic-carcinoma-of-the-lung-a-case-report
#17
Takashi Makino, Yoshinobu Hata, Hajime Otsuka, Satoshi Koezuka, Nao Kikuchi, Kazutoshi Isobe, Naobumi Tochigi, Kazutoshi Shibuya, Sakae Homma, Akira Iyoda
The current study presents the case of a 66-year-old male presenting with fever and chest pain. Chest enhanced computed tomography scanning revealed a mass shadow in the right upper lobe with chest wall invasion. 18-Fluorodeoxyglucose-positron emission tomography (FDG-PET) identified the localized uptake of the mass lesion in the right upper lobe, in addition to diffuse uptake by the bone marrow. The laboratory data on admission revealed marked leukocytosis and an elevated C-reactive protein level (CRP). Serum concentrations of granulocyte colony-stimulating factor (G-CSF) and interleukin 6 were increased...
July 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28684961/natural-history-of-invasive-papillary-breast-carcinoma-followed-for-10-years-a-case-report-and-literature-review
#18
Yong Joon Suh, Hyukjai Shin, Tae Jung Kwon
Diachronic research on untreated breast cancer completely depends on past medical records when no more recent, advanced methods are available. Herein, we report a case of invasive papillary breast carcinoma followed for 10 years in a 59-year-old woman who refused any treatment. The diagnosis was based on core needle biopsies. At the patient's first visit in July 2006, the tumor measured 10.4 × 7.2 × 3.5 cm. It was staged as IIIB (T4bN1). In May 2016, the tumor was staged as IIIC (T4bN3a). In the past 10 years, the tumor has increased to 12...
2017: Case Reports in Medicine
https://www.readbyqxmd.com/read/28682435/high-expression-of-long-non-coding-rna-xist-in-osteosarcoma-is-associated-with-cell-proliferation-and-poor-prognosis
#19
G-L Li, Y-X Wu, Y-M Li, J Li
OBJECTIVE: Osteosarcoma is one of the most common primary bone malignancies. Long non-coding RNAs (lncRNAs) have recently emerged as key regulators of osteosarcoma. The aim of present study was to explore the prognostic value of long non-coding RNA XIST (XIST) in osteosarcoma and XIST's relation to the cell proliferation in osteosarcoma in vitro. PATIENTS AND METHODS: The XIST expressions were detected in osteosarcoma tissues and their paired adjacent normal tissues from 145 osteosarcoma patients by using qRT-PCR...
June 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28677742/upregulation-of-hoxb7-promotes-proliferation-and-metastasis-of-osteosarcoma-cells
#20
Yang Yang, Jing Chen, Qingzhong Chen
Osteosarcoma is the most common primary malignant bone cancer in children and adolescents. Unfortunately, treatment failures are common due to metastasis and chemore-sistance, however, the underlying molecular mechanism remains unclear. Accumulating evidence indicated that the homeobox B7 (HOXB7) gene was associated with the development of cancer. However, the expression and function of HOXB7 in osteosarcoma is still unknown. In the current study, the expression of HOXB7 was upregulated in osteosarcoma tissues and cells compared with paired adjacent non‑tumor bone tissues and osteoblastic cells using reverse transcription‑quantitative polymer chain reaction and western blotting...
June 30, 2017: Molecular Medicine Reports
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