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Pediatric osteosarcoma

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https://www.readbyqxmd.com/read/29163677/trim37-promotes-tumor-cell-proliferation-and-drug-resistance-in-pediatric-osteosarcoma
#1
Yanling Tao, Meiyun Xin, Huanchen Cheng, Zongxuan Huang, Tiantian Hu, Teng Zhang, Jianlong Wang
Osteosarcoma (OS) is among the most frequently occurring bone tumors, particularly in children. Clinical treatment of OS is limited due to several factors including resistance to chemotherapy drugs and metastasis, and the underlying molecular mechanisms remain unclear. In the present study, tripartite motif containing 37 (TRIM37) expression levels were upregulated in tumor samples and associated with the development of drug resistance in OS. Furthermore, chemotherapy drug treatment (doxorubicin, cisplatin and methotrexate) induced TRIM37 expression in OS cells in vitro...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29113313/whole-exome-analysis-in-osteosarcoma-to-identify-a-personalized-therapy
#2
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...
October 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/29065267/the-prognostic-importance-of-tgf-%C3%AE-tgf-%C3%AE-receptor-and-fascin-in-childhood-solid-tumors
#3
Hikmet Gulsah Tanyildiz, Gulsah Kaygusuz, Emel Unal, Nurdan Tacyildiz, Handan Dincaslan, Gulsan Yavuz
Fascin plays a role in tumor metastasis under the influence of TGF-β, each potentiating the effect of the other. We retrospectively investigated whether there was a prognostic relationship between TGF-β and fascin, and disease stage, local recurrence, metastasis tendency, and response to treatment. Twelve neuroblastomas, 17 osteosarcomas, 14 Ewing's sarcomas, 15 rhabdomyosarcoma cases, and 8 rare solid tumors were included. Serum TGF-β levels were high at the time of diagnosis in all groups (p = .015) and decreased significantly during remission (p = ...
October 24, 2017: Pediatric Hematology and Oncology
https://www.readbyqxmd.com/read/28954696/the-effect-of-immune-checkpoint-inhibitors-on-lung-metastases-of-osteosarcoma
#4
Takahiro Shimizu, Yasushi Fuchimoto, Kazumasa Fukuda, Hajime Okita, Yuko Kitagawa, Tatsuo Kuroda
BACKGROUND/PURPOSE: The prognosis of patients with metastases remains unsatisfactory in certain pediatric solid tumors. In this study, we evaluated the efficacy of immune checkpoint inhibitors against such metastases using a murine model of osteosarcoma. METHODS: Murine osteosarcoma LM8 cells were transplanted subcutaneously into C3H mice. The primary tumor lesion was surgically resected 11 days after transplantation. Two hundred micrograms of three antibodies (anti-PD-1, anti-PD-L1, and anti-OX-86) or an isotype antibody were administered intraperitoneally on post-transplantation days 11, 14, 18, and 21...
September 4, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28944406/downregulated-adhesion-associated-micrornas-as-prognostic-predictors-in-childhood-osteosarcoma
#5
L E A Delsin, G M Roberto, P F Fedatto, E E Engel, C A Scrideli, L G Tone, M S Brassesco
miRNAs have been identified as key regulators of almost all cellular processes, therefore, their dysregulation is involved with several diseases, including cancer. miRNAs specifically related to the metastastic cascade are called metastamiRs and can be involved with different steps of this process, including loss of adhesion. Osteosarcoma (OS) is the most common primary malignant pediatric bone tumor that often presents metastatic disease at diagnosis; therefore, a deeper study of adhesion-associated miRNAs could shed light on its pathophysiology...
September 25, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28938163/tumor-cell-targeted-delivery-of-crispr-cas9-by-aptamer-functionalized-lipopolymer-for-therapeutic-genome-editing-of-vegfa-in-osteosarcoma
#6
Chao Liang, Fangfei Li, Luyao Wang, Zong-Kang Zhang, Chao Wang, Bing He, Jie Li, Zhihao Chen, Atik Badshah Shaikh, Jin Liu, Xiaohao Wu, Songlin Peng, Lei Dang, Baosheng Guo, Xiaojuan He, D W T Au, Cheng Lu, Hailong Zhu, Bao-Ting Zhang, Aiping Lu, Ge Zhang
Osteosarcoma (OS) is a highly aggressive pediatric cancer, characterized by frequent lung metastasis and pathologic bone destruction. Vascular endothelial growth factor A (VEGFA), highly expressed in OS, not only contributes to angiogenesis within the tumor microenvironment via paracrine stimulation of vascular endothelial cells, but also acts as an autocrine survival factor for tumor cell themselves, thus making it a promising therapeutic target for OS. CRISPR/Cas9 is a versatile genome editing technology and holds tremendous promise for cancer treatment...
September 13, 2017: Biomaterials
https://www.readbyqxmd.com/read/28937522/ambulatory-high-dose-methotrexate-administration-in-pediatric-osteosarcoma-patients-at-a-single-institution-in-argentina
#7
Jose A Villegas Rubio, Walter Cacciavillano, Adriana Rose, Pedro Zubizarreta, Marcelo Scopinaro
BACKGROUND: The purpose of this study was to evaluate the feasibility and safety of ambulatory high-dose methotrexate (HDMTX) administration with oral hydration, alkalinization, and leucovorin rescue. HDMTX (12 g/m) was given intravenously over 4 hours after urine alkalinization. Families and patients were instructed to continue ambulatory oral hydration and alkalinization to monitor urine pH and to adjust bicarbonate according to our institution's treatment algorithm. Clinical status and MTX levels were controlled every 24 hours, and oral leucovorin dose was adjusted accordingly...
October 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28887617/fdg-pet-ct-appearance-of-local-osteosarcoma-recurrences-in-pediatric-patients
#8
Susan E Sharp, Barry L Shulkin, Michael J Gelfand, M Beth McCarville
BACKGROUND: Osteosarcoma is the most common pediatric malignant bone tumor, frequently surgically managed with limb salvage rather than amputation. Local recurrences are seen in up to 9% of osteosarcoma patients, with CT and MRI imaging often limited by metal artifacts. OBJECTIVE: To describe the [F-18]2-fluoro-2-deoxyglucose (FDG) PET/CT appearance of local osteosarcoma recurrences with correlation to findings on other imaging modalities. MATERIALS AND METHODS: A retrospective review of pediatric osteosarcoma patients imaged with FDG PET/CT was performed in patients with pathologically proven local recurrences...
December 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28841702/prognostic-value-of-fdg-pet-indices-for-the-assessment-of-histological-response-to-neoadjuvant-chemotherapy-and-outcome-in-pediatric-patients-with-ewing-sarcoma-and-osteosarcoma
#9
Clement Bailly, Rodolphe Leforestier, Loic Campion, Estelle Thebaud, Anne Moreau, Francoise Kraeber-Bodere, Thomas Carlier, Caroline Bodet-Milin
PURPOSE: The objective of this retrospective work was to evaluate the prognostic value on histological response and survival of quantitative indices derived from FDG-PET performed before and after chemotherapy (CHT), in a homogeneous pediatric Ewing sarcoma (EWS) and Osteosarcoma (OST) population. METHODS: Thirty-one patients with EWS and 31 with OST were included. All patients were treated with neoadjuvant CHT, and underwent surgery for local control. All patients had FDG-PET at diagnosis and after CHT, prior to surgery...
2017: PloS One
https://www.readbyqxmd.com/read/28806574/quantitative-diffusion-weighted-magnetic-resonance-imaging-assessment-of-chemotherapy-treatment-response-of-pediatric-osteosarcoma-and-ewing-sarcoma-malignant-bone-tumors
#10
Andrew J Degnan, Chul Y Chung, Amisha J Shah
OBJECTIVE: Assessment of tumor response to chemotherapy is essential in managing malignant pediatric bone tumors prior to resection. SUBJECTS AND METHODS: Pre-chemotherapy and post-chemotherapy osteosarcoma and Ewing sarcoma cases (n=18) were analyzed with apparent diffusion coefficient (ADC) values measured by two readers. RESULTS: Treated tumors demonstrated significantly greater ADC values compared to untreated tumors (p<0.001). Intraclass correlation coefficients ranged between 0...
August 5, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28802390/pediatric-head-and-neck-bone-sarcomas-an-analysis-of-204-cases
#11
Jacob S Brady, Sei Y Chung, Emily Marchiano, Jean Anderson Eloy, Soly Baredes, Richard Chan Woo Park
OBJECTIVES: To analyze the demographics, survival, and treatment efficacy of pediatric sarcomas of the facial skeleton and skull. METHODS: Retrospective study of cases from the US National Cancer Institute's Surveillance, Epidemiology, and End Results database. Pediatric patients between the ages of 0 and 18 diagnosed with a malignant sarcoma of either the mandible or the bones of skull, face, and associated joints from 1973 to 2013 were studied. RESULTS: In total, 204 patients were included in the analysis...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28781793/activation-of-the-arachidonic-acid-metabolic-pathway-and-induction-of-sleep-disturbance-by-sacral-osteoblastoma-a-case-report
#12
Mitsunori Ozaki, Kazuya Nishioka, Akihiko Kimura, Toshikazu Kondo, Naoyuki Nakao
Osteoblastomas are benign bone tumors that produce prostaglandin and promote inflammation. The aim of the present study was to describe the clinical and radiological characteristics of a pediatric osteoblastoma case over an 8-month postoperative follow-up. The case involved an 11-year-old female patient with normal somatic development, presenting with a chief complaint of sleep disturbance. The patient had no spontaneous pain or other readily evident possible causes. Magnetic resonance imaging (MRI) revealed a neoplastic lesion in the sacrum, with peritumoral edema...
August 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28765882/microrna-300-decreases-cell-viability-inhibits-migration-and-promotes-apoptosis-of-osteosarcoma-cells-via-downregulation-of-twist1
#13
Jinpeng Jia, Pei Yin, Gang Han, Meng Xu, Wei Wang, Wenzhi Bi
Osteosarcoma (OS) is the most frequently occurring pediatric bone malignancy in the world. Numerous miRNAs have previously been demonstrated to participate in the initiation and development of OS. The present study aimed to reveal the role of microRNA‑300 (miR‑300) in OS cells and elucidate the underlying mechanism involved. The expression of miR‑300 in the MG63 human OS cell line was monitored via quantitative polymerase chain reaction (qPCR). Following transfection with miR‑300 mimic, miR‑300 inhibitor or scramble control, MG63 cell viability, migration and apoptosis were respectively measured by 3‑(4,5‑dimethyl‑2‑thiazolyl)‑2,5‑diphenyltetrazolium bromide (MTT), modified two‑chamber migration assay and flow cytometry...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28708590/whole-exome-analysis-in-osteosarcoma-to-identify-a-personalized-therapy
#14
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/28697168/pretreatment-neutrophil-to-lymphocyte-ratio-and-lymphocyte-recovery-independent-prognostic-factors-for-survival-in-pediatric-sarcomas
#15
Liliana Vasquez, Esmeralda León, Brady Beltran, Ivan Maza, Monica Oscanoa, Jenny Geronimo
BACKGROUND: Pretreatment neutrophil-to-lymphocyte ratio (NLR) and absolute lymphocyte count (ALC) recovery have been shown to be associated with prognosis in several types of cancer in adults. However, evidence in pediatric cancer is scarce. The aim of our study was to evaluate whether pretreatment NLR and lymphocyte recovery are prognostic factors in pediatric sarcomas. MATERIALS AND METHODS: Study participants were identified from a retrospective cohort of 100 children with osteosarcoma (n=55), rhabdomyosarcoma (n=22), and Ewing sarcoma (n=23)...
October 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28696044/practice-patterns-of-palliative-radiation-therapy-in-pediatric-oncology-patients-in-an-international-pediatric-research-consortium
#16
Avani Dholakia Rao, Qinyu Chen, Ralph P Ermoian, Sara R Alcorn, Maria Luisa S Figueiredo, Michael J Chen, Karin Dieckmann, Shannon M MacDonald, Matthew M Ladra, Daria Kobyzeva, Alexey V Nechesnyuk, Kristina Nilsson, Eric C Ford, Brian A Winey, Rosangela C Villar, Stephanie A Terezakis
BACKGROUND/OBJECTIVES: The practice of palliative radiation therapy (RT) is based on extrapolation from adult literature. We evaluated patterns of pediatric palliative RT to describe regimens used to identify opportunity for future pediatric-specific clinical trials. DESIGN/METHODS: Six international institutions with pediatric expertise completed a 122-item survey evaluating patterns of palliative RT for patients ≤21 years old from 2010 to 2015. Two institutions use proton RT...
November 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28689886/use-of-radiotracer-labeling-of-pulmonary-nodules-to-facilitate-excisional-biopsy-and-metastasectomy-in-children-with-solid-tumors
#17
Stephanie F Polites, Aodhnait S Fahy, William A Sunnock, Donald D Potter, Denise B Klinkner, Christopher R Moir, K Robert Shen, Michael B Ishitani
PURPOSE: Excision of suspected pulmonary metastases in children is challenging in the setting of multiple nodules or nodules that are small, deep, or soft. This study describes preoperative technetium macro-aggregated albumin (Tc 99m MAA) localization of pulmonary lesions to aid in intraoperative identification and resection. METHODS: Patients with past or present pediatric solid tumors who underwent resection of pulmonary nodules following CT-guided Tc 99m MAA labeling were identified...
June 27, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28685501/pazopanib-for-second-recurrence-of-osteosarcoma-in-pediatric-patients
#18
Katsutsugu Umeda, Itaru Kato, Satoshi Saida, Takeshi Okamoto, Souchi Adachi
No abstract text is available yet for this article.
July 6, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28617714/perioperative-chemotherapy-with-and-without-high-dose-methotrexate-in-adult-osteosarcoma
#19
Marcelo Vailati Negrão, Lucila S da Silva Rocha, Daniel da Motta Girardi, Olavo Feher
Treatment of adult osteosarcoma (AOS) includes perioperative chemotherapy and surgery. Standard chemotherapy consists of cisplatin (CP) and doxorubicin (DOX). Although considered the standard of care for pediatric patients, high-dose methotrexate (HDM) remains controversial in adults. We aimed to evaluate the role of HDM in AOS treated with curative intent. This study included patients with AOS who received perioperative chemotherapy with DOX and CP (group 1; N=16) and DOX, CP, and HDM (group 2; N=10). The primary endpoint was grade 3 or superior toxicities...
September 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28616573/yap-and-the-hippo-pathway-in-pediatric-cancer
#20
REVIEW
Atif A Ahmed, Abdalla D Mohamed, Melissa Gener, Weijie Li, Eugenio Taboada
The Hippo pathway is an important signaling pathway that controls cell proliferation and apoptosis. It is evolutionarily conserved in mammals and is stimulated by cell-cell contact, inhibiting cell proliferation in response to increased cell density. During early embryonic development, the Hippo signaling pathway regulates organ development and size, and its functions result in the coordinated balance between proliferation, apoptosis, and differentiation. Its principal effectors, YAP and TAZ, regulate signaling by the embryonic stem cells and determine cell fate and histogenesis...
2017: Molecular & Cellular Oncology
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