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Osteosarcoma

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https://www.readbyqxmd.com/read/28535645/-effect-of-rapamycin-and-chloroquine-on-osteosarcoma
#1
W D Liu, W Sun, Y Q Hua, S G Wang, Z D Cai
Objective: To investigate the combination effect of anti-tumor agent rapamycin and anti-autophagy agent chloroquine on osteosarcoma. Methods: The inhibition effect of rapamycin or chloroquine and combination of both on human osteosarcoma cell line 143B measured with CCK-8 box.The combination index at different concentration was calculated, and the synergism effect range was analysed.The effect of combined therapy on cell cycle and apoptosis via flow cytometric was analyzted.Setting up murine subcutaneous xenograft model, the combination effect of antitumor in vivo observed...
May 23, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28535178/successful-removal-of-giant-primary-osteosarcoma-in-the-anterior-mediastinum-invading-the-superior-vena-cava-and-right-lung-with-artificial-blood-vessel-reconstruction
#2
Han-Yu Deng, Chang-Long Qin, Xiao-Ming Qiu, Qinghua Zhou
No abstract text is available yet for this article.
May 23, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28534992/hif-1%C3%AE-inhibits-idh-1-expression-in-osteosarcoma
#3
Deng-Cheng Liu, Xun Zheng, Yong Zho, Wan-Rong Yi, Zong-Huan Li, Xiang Hu, Ai-Xi Yu
Recently, hypoxia inducible factor-1 (HIF-1) was reported to be correlated with isocitrate dehydrogenase 1 (IDH-1) in several types of tumors. However, the expression and significance of HIF-1 and IDH-1 in osteosarcoma is still unknown. In the present study, the expression levels of IDH-1 and HIF-1α in 35 formalin-fixed paraffin-embedded sections from osteosarcoma patients were investigated by immunohistochemistry. The expression levels of IDH-1 and HIF-1α in human osteosarcoma cell lines (MG-63 and 143B) were further detected by western blotting under normal and hypoxic conditions...
May 22, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28534553/-ionizing-radiation-received-by-patients-with-osteosarcoma-during-intra-arterial-chemotherapy-treatment
#4
N Aznárez-Sanado, M Aznárez-Sanado, L Sierrasesúmaga, J I Bilbao, J M Martí-Climent, A Patiño-García
BACKGROUND: Osteosarcoma paediatric patients are usually treated with intra-arterial chemotherapy (QTia) which is admi-nistered directly to the tumour. This procedure exposes patients to ionizing radiation. Paediatric patients are especially sensitive to this exposure. METHODS: The total amount of ionizing radiation received from QTia administration was quantified in a group of 16 osteo-sarcoma paediatric patients from the Clínica Universidad de Navarra. RESULTS: The median of the total radiation received per patient was 33...
April 30, 2017: Anales del Sistema Sanitario de Navarra
https://www.readbyqxmd.com/read/28533858/-bone-tuberculosis-mimicking-malignancy-a-case-report
#5
Tarik Salama, El Mohtadi Aghoutane, Redouane El Fezzazi
Bone tuberculosis may mimic malignant tumor. We here report the case of a 4-year old child with bone tuberculosis mimicking femoral osteosarcoma. The diagnosis was rectified thanks to anatomo-pathologic examination. This case study underlines the importance of knowing the clinical and radiological aspects of bone tuberculosis which can mimic malignant tumor. In order to avoid any delay in diagnosis, surgeons, pediatricians and radiologists should know that tuberculosis can mimic many pathologies, both clinically and radiologically...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28532049/co-delivery-of-cisplatin-and-doxorubicin-from-calcium-phosphate-beads-matrix-scaffolds-for-osteosarcoma-therapy
#6
Ulrike Hess, Shakiba Shahabi, Laura Treccani, Philipp Streckbein, Christian Heiss, Kurosch Rezwan
Bone substitute materials with a controlled drug release ability can fill cavities caused by the resection of bone tumours and thereby combat any leftover bone cancer cells. The combined release of different cytostatics seems to enhance their toxicity. In this study, calcium phosphate beads and matrix scaffolds are combined for a long-term co-delivery of cis-diamminedichloroplatinum (cisplatin, CDDP) and doxorubicin hydrochloride (DOX) as clinical relevant model drugs. Tricalcium phosphate/alginate beads as additional drug carrier are produced by droplet extrusion with ionotropic gelation and incorporated in scaffold matrix by freeze gelation without sintering...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28530214/-the-long-term-treatment-outcomes-of-adult-osteosarcoma
#7
Iwowa Ługowska, Andrzej Pieńkowski, Anna Szumera-Ciećkiewicz, Hanna Koseła-Paterczyk, Pawel Teterycz, Maciej Głogowski, Katarzyna Kozak, Anna Klimczak, Slawomir Falkowski, Piotr Rutkowski
Osteosarcoma is the most common primary bone tumor. Treatment of osteosarcoma patients is based on chemotherapy as well as surgical resection of primary tumor and distant metastases. Lung metastases are the primary cause of death in this group of patients. AIM: The aim of this study is to summarize the 20 years of osteosarcoma treatment outcomes in the Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology in Warsaw. MATERIALS AND METHODS: Our analysis included clinical data of 299 osteosarcoma patients aged between 14 and 81 years (median 32) treated in Maria Sklodowska-Curie Memorial Cancer Center between 1998 and 2016...
April 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28529749/chondroblastic-osteosarcoma-arising-in-the-maxilla-mimicking-the-radiographic-and-histological-characteristics-of-cemento-osseous-lesions-a-case-report
#8
Bin-Bin Li, Jian-Yun Zhang, Yan Gao
Osteosarcomas of the jaw are comparatively rare and represent only 2-10% of all osteosarcomas. We herein present a rare case of an osteosarcoma exhibiting the radiographic and histological characteristics of cemento-osseous lesions in the alveolar ridge of the maxilla. A 53-year-old male patient presented with the complaint of gradual swelling of the left maxilla over 4 years. Radiography revealed an ill-defined radioopaque mass, intimately associated with the apices of the involved teeth, without a periosteal reaction...
May 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28529588/downregulation-of-calbindin-1-a-calcium-binding-protein-reduces-the-proliferation-of-osteosarcoma-cells
#9
Zhengxiang Huang, Guojun Fan, Dongliang Wang
Osteosarcoma is the most common type of primary malignant bone tumor and has a high propensity to metastasize to the lungs and bones. Calbindin 1 (CALB1) is a constituent Ca2+ binding protein, which can prevent apoptotic death in several cell types induced through various pro-apoptotic signaling pathways. To investigate whether CALB1 is implicated in the tumor growth of human osteosarcoma, two different short hairpin RNAs (shRNAs) against CALB1 were used for CALB1-knockdown in osteosarcoma U2OS cells. The U2OS cells were divided into three groups: Two groups with CALB1 knockdown (CALB1-shRNA 1 and CALB1-shRNA 2) and one control group (Con-shRNA)...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28529574/knockdown-of-stmn1-enhances-osteosarcoma-cell-chemosensitivity-through-inhibition-of-autophagy
#10
Zili Wang, Rongzhen He, Hansong Xia, Yu Wei, Song Wu
Chemoresistance is a major cause for the poor prognosis of osteosarcoma (OS) patients. However, our understanding of mechanisms underlying chemoresistance in OS are limited. The present study aimed to investigate the effect of stathmin 1 (STMN1) on paclitaxel-induced chemoresistance, as well as the underlying mechanism. Western blot analysis data revealed that the expression level of STMN1 was dramatically increased in OS cell lines (HOS, Saos-2, U-2OS and MG-63), when compared to normal osteoblast hFOB1.19 cells...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28525948/microrna-203-inhibits-proliferation-and-invasion-and-promotes-apoptosis-of-osteosarcoma-cells-by-targeting-runt-related-transcription-factor-2
#11
Wenjun Lin, Xiongbai Zhu, Shengwu Yang, Xin Chen, Lu Wang, Zhengxiang Huang, Yewei Ding, Lintuo Huang, Chen Lv
Accumulating evidence indicates that microRNA-203 (miR-203) is abnormally expressed in many human tumor tissues and significantly associated with the occurrence, development and clinical outcomes of human tumors. The aim of this study was to determine the target genes and functional significance of miR-203 in osteosarcoma cells. We found reduced expression of miR-203 in osteosarcoma tissues and cells (MG63 and U2-OS) compared with the adjacent normal tissues and normal osteoblastic cells (hFOB1.19), respectively...
May 15, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28524233/bortezomib-sensitizes-human-osteosarcoma-cells-to-adriamycin-induced-apoptosis-through-ros-dependent-activation-of-p-eif2%C3%AE-atf4-chop-axis
#12
Miao Xian, Handi Cao, Ji Cao, Xuejing Shao, Difeng Zhu, Ning Zhang, Ping Huang, Weixu Li, Bo Yang, Meidan Ying, Qiaojun He
Osteosarcoma is the most common bone cancer, and chemotherapy is currently indispensable for its treatment. Adriamycin has been claimed to be the most effective agent for osteosarcoma, however, the outcome of adriamycin chemotherapy remains unsatisfactory. Here, we reported a potent combination therapy that bortezomib, a proteasome inhibitor, enhances adriamycin-induced apoptosis to eliminate osteosarcoma cells and we revealed that the activation of p-eIF2α/ATF4/CHOP axis is the underlying associated mechanisms...
May 19, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28523034/effects-of-sirna-mediated-hif-1%C3%AE-gene-silencing-on-angiogenesis-in-osteosarcoma
#13
Xu-Dong Zhang, Qiang Wu, Shu-Hua Yang
OBJECTIVE: To explore angiogenesis in osteosarcoma under the condition of hypoxia-inducible factor (HIF)-1α gene silenced by small interference RNA (siRNA). METHODS: The SaOS-2 osteosarcoma cells, transfected with the recombinant plasmid pSilencer2.1-HIF-1α or pSilencer2.1-SCR, were classified as HIF-1α/siRNA group or SCR/siRNA group, respectively. In which, vascular endothelial growth factor (VEGF) immunohistochemistry were performed. HIF-1α and VEGF protein contents were detected by western blot...
March 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28521633/cd30-expression-in-pediatric-neoplasms-study-of-585-cases
#14
Jinjun Cheng, Haiqing Zhu, John Kim Choi
CD30 is a member of the tumor necrosis factor receptor superfamily, member 8 (TNFRSF8), and its normal expression is restricted to activated T and B cells. In tumor cells, CD30 expression is most commonly associated with lymphoid malignancies (Hodgkin and non-Hodgkin lymphomas) and is a therapeutic target using anti-CD30 antibody. CD30 expression has been reported also in mostly adult non-lymphoid malignancies, raising the possibility of CD30-targeted therapy for additional tumors. In this study, we examined the incidence of CD30 expression in 251 hematopoietic and 334 non-hematopoietic cases of pediatric tumors...
June 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28521412/microrna-335-and-its-target-rock1-synergistically-influence-tumor-progression-and-prognosis-in-osteosarcoma
#15
Yong Wang, Ningning Wang, Xiandong Zeng, Jie Sun, Guangbin Wang, Huimian Xu, Wei Zhao
MicroRNA (miR)-335 and Rho-associated serine-threonine protein kinase 1 (Rock1) is ectopically expressed in multiple malignant tumors including osteosarcoma. The present study aimed to clarify whether the combined ectopically expressed miR-335 and Rock1 was correlated with clinicopathological features and prognosis in patients with osteosarcoma. The expression of miR-335 and Rock1 in 91 osteosarcoma tissue samples and 47 noncancerous bone tissues were determined respectively by in situ hybridization and immunohistochemistry...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28521394/increased-six1-expression-is-associated-with-poor-prognosis-in-patients-with-osteosarcoma
#16
Lemeng Chao, Jianfeng Liu, Dewei Zhao
Sine oculis homeobox homolog 1 (Six1) is an evolutionarily conserved transcription factor that acts as master regulator of development and is frequently dysregulated in various types of cancer. Six1 has been demonstrated to be upregulated in human osteosarcoma cell lines compared with osteoblastic cell lines. However, the association of Six1 expression with the progression and prognosis of osteosarcoma patients remains unclear. The purpose of the present study was to investigate the association between Six1 expression and the clinicopathological characteristics and prognosis of osteosarcoma...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28521390/retraction-androgen-receptor-cag-and-ggn-repeat-length-variation-contributes-more-to-the-tumorigenesis-of-osteosarcoma
#17
Yongxiang Shi, Weishan Chen, Qinghuai Li, Zhaoming Ye
No abstract text is available yet for this article.
May 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28519068/long-noncoding-rna-gas5-suppresses-cell-growth-and-epithelial-mesenchymal-transition-in-osteosarcoma-by-regulating-the-mir-221-arhi-pathway
#18
Kaishan Ye, Shuanke Wang, Haihong Zhang, Hua Han, Bing Ma, Wei Nan
Dysregulated long noncoding RNAs (lncRNAs) and microRNAs (miRNAs) play key roles in the development of human cancers. The lncRNA growth arrest-specific 5 (GAS5) is reported to be a tumor suppressor in multiple cancers. However, the roles of GAS5 and its related miRNAs in osteosarcoma are poorly understood. This study explored the potential functions and mechanisms of GAS5 in the tumorigenesis of osteosarcoma. Here, the expression of GAS5, miR-221 and aplasia Ras homologue member I (ARHI) was determined in osteosarcoma tissues and cells by Real-time PCR (RT-qPCR)...
May 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28515123/all-trans-retinoic-acid-prevents-osteosarcoma-metastasis-by-inhibiting-m2-polarization-of-tumor-associated-macrophages
#19
Qian Zhou, Miao Xian, Senfeng Xiang, Danyan Xiang, Xuejing Shao, Jincheng Wang, Ji Cao, Xiaochun Yang, Bo Yang, Meidan Ying, Qiaojun He
M2-polarized tumor associated macrophages (TAM) play a critical role in cancer invasion and metastasis. Here, we report that M2 macrophages enhanced metastasis of K7M2 WT osteosarcoma cells to the lung in mice, thus establishing M2 TAMs as a therapeutic target for blocking osteosarcoma metastasis. We found that all-trans retinoic acid (ATRA) inhibited osteosarcoma metastasis via inhibiting the M2 polarization of TAMs. ATRA suppressed IL13 or IL4 induced M2-type macrophages, and then inhibited migration of osteosarcoma cells as promoted by M2-type macrophages in vitro ATRA reduced the number of pulmonary metastatic nodes of osteosarcoma and decreased expression of M2-type macrophages in metastatic nodes both in intravenous injection and orthotopic transplantation models...
May 17, 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/28509991/camellia-sinensis-increased-apoptosis-on-u2os-osteosarcoma-cells-and-wound-healing-potential-on-nih3t3-fibroblast-cells
#20
Sinem Er, Miriş Dikmen
Camellia sinensis (Cs) is a plant which is rich in polyphenols and has antioxidant, antiinflammatory, antimutagenic, anticarcinogenic and antibacterial activities. In this study, two different methanol extracts (Cs-I and Cs-II) were prepared from the leaf of C. sinensis in order to investigate the wound healing and anticancer activities. Total phenolic content and antioxidant activity of the extracts were determined. Wound healing effects of Cs extracts were evaluated by using Masson's Trichrome Tecnique on NIH3T3 fibroblast cells...
May 16, 2017: Cytotechnology
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