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International Journal of Oncology

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https://www.readbyqxmd.com/read/29956738/epoxymicheliolide-a-novelguaiane-type-sesquiterpene-lactone-inhibits-nf%C3%A2-%C3%AE%C2%BAb-cox%C3%A2-2-signaling-pathways-by-targeting-leucine-281-and-leucine-25-in-ikk%C3%AE-in-renal-cell-carcinoma
#1
Jiabin Zhu, Jun Zhao, Zhenlong Yu, Sandeep Shrestha, Jing Song, Wenwen Liu, Wen Lan, Jinshan Xing, Shuang Liu, Chen Chen, Momo Cao, Xiuzhen Sun, Qi Wang, Xishuang Song
Parthenolide (PTL) is a sesquiterpene lactone compound obtained from Tanacetum parthenium (feverfew) and inhibits the activation of nuclear factor (NF)-κB. Epoxymicheliolide (EMCL) is a compound which is structurally related to PTL; however, EMCL is more stable under acidic and alkaline conditions. As a biologically active molecule, the detailed mechanism by which EMCL inhibits tumor activity remains to be elucidated. The present study evaluated the effect of EMCL on renal cell carcinoma (RCC) cells and identified the underlying mechanisms...
June 29, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956737/microrna-381-reduces-inflammation-and-infiltration-of-macrophages-in-polymyositis-via-downregulating-hmgb1
#2
Yutao Liu, Yuan Gao, Jing Yang, Changhe Shi, Yanlin Wang, Yuming Xu
The downregulation of microRNA (miR)-381 has been detected in various diseases. The present study aimed to investigate the effects, and underlying mechanisms of miR-381 on inflammation and macrophage infiltration in polymyositis (PM). A mouse model of experimental autoimmune myositis (EAM) was generated in this study. Hematoxylin and eosin staining was conducted to detect the inflammation of muscle tissues. In addition, ELISA and immunohistochemistry were performed to determine the expression levels of associated factors, and reverse transcription-quantitative polymerase chain reaction and western blotting were used to detect the expression levels of related mRNAs and proteins...
June 29, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956730/high-cox-2-expression-contributes-to-a-poor-prognosis-through-the-inhibition-of-chemotherapy-induced-senescence-in-nasopharyngeal-carcinoma
#3
Chen Shi, Yongjun Guan, Liang Zeng, Guizhu Liu, Yinghong Zhu, He Xu, Yichen Lu, Jiabin Liu, Jiaojiao Guo, Xiangling Feng, Xinying Zhao, Weihong Jiang, Guancheng Li, Guiyuan Li, Yun Dai, Fengyan Jin, Wei Li, Wen Zhou
Resistance to radiotherapy and chemotherapy currently represents one of the major reasons for therapeutic failure in nasopharyngeal carcinoma (NPC). However, the mechanisms underlying resistance to chemotherapy in NPC remain unclear. In this study, cell counting assay, cell cycle assay and senescence associated β-galactosidase activity were performed to evaluate cell growth, proliferation and senescence, respectively. We found that the aberrant expression of cyclooxygenase-2 (COX-2) was associated with a poor outcome and recurrance in patients with NPC...
June 29, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956727/polyphyllin-i-inhibits-invasion-and-epithelial-mesenchymal-transition-via-cip2a-pp2a-erk-signaling-in-prostate-cancer
#4
Xuewen Liu, Zhiting Sun, Dandan Li, Jikun Deng, Jun Liu, Kaihuai Ma, Shanshan Qin, Yuan Si, Te Zhang, Tingting Feng, Ying Liu, Yan Tan
Polyphyllin I (PPI) is a natural compound extracted from the rhizomes of Paris polyphylla and has been used to treat fevers and headaches in China. In the present study, the antitumor activity of PPI in prostate cancer (PC) cells was evaluated. At low doses, PPI decreased proliferation, invasion and epithelial-mesenchymal transition (EMT) in PC cells. PPI decreased the expression of matrix metalloproteinase 7 (MMP7), an enzyme that is critical for tumor metastasis. PPI also decreased the expression of Snail and vimentin, which are EMT-associated factors...
June 29, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956726/curcumin-attenuates-resistance-to-irinotecan-via-induction-of-apoptosis-of-cancer-stem-cells-in-chemoresistant-colon-cancer-cells
#5
Pengfei Su, Yong Yang, Guoxin Wang, Xiaowu Chen, Yongle Ju
Resistance to conventional chemotherapeutic agents, including irinotecan (CPT‑11), 5-fluorouracil and capecitabine is a major cause for therapeutic failure in patients with colorectal cancer (CRC). Increasing evidence has demonstrated that cancer cells exhibiting stem cell-like characteristics are associated with the development of resistance to chemotherapeutic agents. As a plant polyphenol, curcumin has been demonstrated to have the ability to ameliorate resistance of CRC to chemotherapeutic agents, but the associations among curcumin, cancer stem cells (CSCs) and chemoresistance of CRC remain unclear...
June 29, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956741/prolonged-survival-of-patients-with-colorectal-cancer-is-associated-with-a-higher-regucalcin-gene-expression-overexpression-of-regucalcin-suppresses-the-growth-of-human-colorectal-carcinoma-cells-in-vitro
#6
Masayoshi Yamaguchi, Satoru Osuka, Tomiyasu Murata
Regucalcin plays a crucial role as a regulator of transcriptional signaling activity, and its decreased expression or activity may contribute to the promotion of human carcinogenesis. A higher regucalcin expression in the tumor tissues has been demonstrated to prolong the survival of patients with various types of cancer, including pancreatic cancer, breast cancer, liver cancer and lung adenocarcinoma. The involvement of regucalcin in human colorectal cancer was investigated in the current study. Regucalcin gene expression and the survival data of 62 patients with colorectal cancer were obtained though the Gene Expression Omnibus (GEO) database (GSE12945) for outcome analysis...
June 28, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956732/single-walled-carbon-nanohorn-aggregates-promotes-mitochondrial-dysfunction-induced-apoptosis-in-hepatoblastoma-cells-by-targeting-sirt3
#7
Bowei Li, Xiaoxun Chen, Wenbin Yang, Jingliang He, Ke He, Zhenglin Xia, Jinqian Zhang, Guoan Xiang
Single-walled carbon nanohorns (SWNHs) can accumulate in a variety of cell types or tissues and exert biological effects, which have been demonstrated to induce apoptosis in hepatoblastoma cells. However, the role and molecular mechanisms of SWNHs remain unclear. The mitochondrion is an important subcellular structure and may contribute to apoptosis that is induced by SWNHs in hepatoblastoma cells. To address this question, the mitochondrial function of HepG2 or L02 cells that were treated with SWNHs was examined...
June 28, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956749/modulation-of-the-tumor-microenvironment-by-intratumoral-administration-of-imo-2125-a-novel-tlr9-agonist-for-cancer-immunotherapy
#8
Daqing Wang, Wayne Jiang, Fugang Zhu, Xianzhi Mao, Sudhir Agrawal
The objective of cancer immunotherapy is to prime the host's immune system to recognize and attack malignant tumor cells. IMO‑2125, a Toll‑like receptor 9 (TLR9) agonist, exhibited potent antitumor effects in the murine syngeneic A20 lymphoma and the CT26 colon carcinoma models. IMO‑2125 exhibited superior A20 antitumor activity when injected intratumorally (i.t.) compared with equivalent subcutaneous doses. In mice bearing dual CT26 grafts, the i.t. injection of right flank tumors elicited infiltration of cluster of differentiation (CD)3+ T lymphocytes into tumors, resulting in the regression of injected and uninjected left flank tumors...
June 27, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956724/effect-of-abt-888-on-the-apoptosis-motility-and-invasiveness-of-brafi-resistant-melanoma-cells
#9
Federica Fratangelo, Rosa Camerlingo, Maria Vincenza Carriero, Giuseppe Pirozzi, Giuseppe Palmieri, Giusy Gentilcore, Concetta Ragone, Michele Minopoli, Paolo Antonio Ascierto, Maria Letizia Motti
Melanoma is a molecularly heterogeneous disease with many genetic mutations and altered signaling pathways. Activating mutations in the BRAF oncogene are observed in approximately 50% of cutaneous melanomas and the use of BRAF inhibitor (BRAFi) compounds has been reported to improve the outcome of patients with BRAF-mutated metastatic melanoma. However, the majority of these patients develop resistance within 6-8 months following the initiation of BRAFi treatment. In this study, we examined the possible use of the poly(ADP-ribose) polymerase 1 (PARP1) inhibitor, ABT-888 (veliparib), as a novel molecule that may be successfully employed in the treatment of BRAFi-resistant melanoma cells...
June 27, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956751/psoriasin-overexpression-confers-drug-resistance-to-cisplatin-by-activating-erk-in-gastric-cancer
#10
Liting Li, Yuxin Cui, Lin Ye, Zehang Zhao, Wen G Jiang, Jiafu Ji
Psoriasin, a member of the S100 multigenic family, which is aberrantly expressed in a variety of human tumors, is considered as an attractive molecular target for cancer treatment. The present study aimed to characterize the role of psoriasin in gastric cancer (GC), the associated pathways through which it contributes to cancer development and progression, and the effect of psoriasin on cellular response to pre-operative chemotherapy in patients with GC. Expression of psoriasin mRNA and protein were analyzed using quantitative polymerase chain reaction and immunohistochemistry of gastric cancer cohorts, respectively...
June 26, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956757/lncrna-atb-functions-as-a-competing-endogenous-rna-to-promote-yap1-by-sponging-mir-590-5p-in-malignant-melanoma
#11
Kuanhou Mou, Bo Liu, Meiling Ding, Xin Mu, Dan Han, Yan Zhou, Li-Juan Wang
The critical long non‑coding RNAs (lncRNAs) involved in the carcinogenesis and progression of malignant melanoma (MM) have not been fully investigated. In the present study, it was identified that lncRNA activated by transforming growth factor‑β (lncRNA‑ATB) was upregulated in MM tissues and cells compared with benign nevus cells and human melanocytes, via comparative lncRNA screening from Gene Expression Omnibus datasets and reverse transcription‑quantitative polymerase chain reaction analysis. Furthermore, lncRNA‑ATB promoted the cell proliferation, cell migration, and cell invasion of MM cells in vitro, and tumor growth in vivo...
June 25, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956753/tristetraprolin-activation-by-resveratrol-inhibits-the-proliferation-and-metastasis-of-colorectal-cancer-cells
#12
Se-Ra Lee, Hua Jin, Won-Tae Kim, Won-Jung Kim, Sung Zoo Kim, Sun-Hee Leem, Soo Mi Kim
Resveratrol (RSV) is a polyphenolic compound that naturally occurs in grapes, peanuts and berries. Considerable research has been conducted to determine the benefits of RSV against various human cancer types. Tristetraprolin (TTP) is an AU-rich element-binding protein that regulates mRNA stability and has decreased expression in human cancer. The present study investigated the biological effect of RSV on TTP gene regulation in colon cancer cells. RSV inhibited the proliferation and invasion/metastasis of HCT116 and SNU81 colon cancer cells...
June 25, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956777/the-antioxidant-aged-garlic-extract-exerts-cytotoxic-effects-on-wild-type-and-multidrug-resistant-human-cancer-cells-by-altering-mitochondrial-permeability
#13
Shinji Ohkubo, Lisa Dalla Via, Silvia Grancara, Yuta Kanamori, Aída Nelly García-Argáez, Gianluca Canettieri, Paolo Arcari, Antonio Toninello, Enzo Agostinelli
Aged garlic extract (AGE) has been shown to possess therapeutic properties in cancer; however its mechanisms of action are unclear. In this study, we demonstrate by MTT assay that AGE exerts an anti-proliferative effect on a panel of both sensitive and multidrug-resistant (MDR) human cancer cell lines and enhances the effects of hyperthermia (42˚C) on M14 melanoma cells. The evaluation of the mitochondrial activity in whole cancer cells treated with AGE, performed by cytofluorimetric analysis in the presence of the lipophilic cationic fluorochrome JC-1, revealed the occurrence of dose-dependent mitochondrial membrane depolarization...
June 22, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956750/long-non%C3%A2-coding-rna-00152-functions-as-a-competing-endogenous-rna-to-regulate-nrp1-expression-by-sponging-with-mirna%C3%A2-206-in-colorectal-cancer
#14
Zhuan-Peng Chen, Jian-Chang Wei, Qiang Wang, Ping Yang, Wang-Lin Li, Feng He, Hua-Cui Chen, He Hu, Jun-Bin Zhong, Jie Cao
Colorectal cancer (CRC) is the third most common type of cancer; however, the molecular mechanisms underlying colorectal tumor metastasis and growth remain elusive. Recently, accumulating evidence has indicated that long non‑coding RNAs (lncRNAs) play a critical role in CRC progression and metastasis; however, the biological role and clinical significance of lncRNA 00152 (lnc00152) in CRC remains largely unknown. Thus, in this study, lnc00152 expression was measured in 80 human CRC tissue samples, 40 non‑cancerous tissue samples, and 3 CRC cell lines (SW480, SW620 and LoVo) using RT‑qPCR...
June 22, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956756/zic1-acts-a-tumor-suppressor-in-breast-cancer-by-targeting-survivin
#15
Wei Han, Fang Cao, Xiao-Jiao Gao, Hua-Bing Wang, Fang Chen, Si-Jian Cai, Cong Zhang, Yong-Wei Hu, Jun Ma, Xing Gu, Hou-Zhong Ding
In this study, we aimed to identify the tumor suppressive roles of zinc finger of the cerebellum 1 (ZIC1) in patients with malignant breast neoplasms and to examine the association between ZIC1 and survivin expression. For this purpose, 140 invasive breast cancer specimens, 1,075 RNA breast cancer samples from The Cancer Genome Atlas (TCGA), 6 human breast cancer cell lines and MCF-10A normal breast epithelial cells were selected in order to compare the expression level of ZIC1 with that of survivin via immunohistochemistry and western blot analysis...
June 21, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956746/liposomal-paclitaxel-induces-fewer-hematopoietic-and-cardiovascular-complications-than-bioequivalent-doses-of-taxol
#16
Shih-Ting Huang, Yi-Ping Wang, Yen-Hui Chen, Chin-Tarng Lin, Wen-Shan Li, Han-Chung Wu
Paclitaxel (PTX) exhibits potent antineoplastic activity against various human malignancies; however, clinical application must overcome the inherent hydrophobicity of this molecule. The commercialized Taxol formulation utilizes Cremophor EL (CrEL)/ethanol as a solvent to stabilize and dispense PTX in an aqueous solution. However, adverse CrEL‑induced hypersensitivity reactions have been reported in ~30% of recipients, and 40% of patients receiving premedication may also experience this adverse effect. Therefore, the development of a CrEL-free delivery system is crucial, in order to fully exploit the therapeutic efficacy of PTX...
June 21, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956745/silencing-ubc9-expression-suppresses-osteosarcoma-tumorigenesis-and-enhances-chemosensitivity-to-hsv-tk-gcv-by-regulating-connexin-43-sumoylation
#17
Dianying Zhang, Kai Yu, Zhong Yang, Yanxia Li, Xiaofang Ma, Xiyun Bian, Fengting Liu, Lili Li, Xiaozhi Liu, Wenhan Wu
The ability of herpes simplex virus thymidine kinase/ganciclovir (HSV-TK/GCV) systems to kill tumor cells is partially dependent on the integrity of gap junction intercellular communication (GJIC) of targeted tumor cells. Recent studies have suggested that connexin 43 (Cx43), which serves a role in gap junction-mediated intercellular communication, is regulated by small ubiquitin-like modifiers (SUMOs). However, the roles of these post-translational modifications remain to be elucidated. The present study demonstrated overexpression of SUMO‑conjugating enzyme Ubc9 (Ubc9) protein in osteosarcoma...
June 21, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956742/identification-of-cisplatin-sensitizers-through-high-throughput-combinatorial-screening
#18
Yichen Sun, Weiye Jiang, Wenhua Lu, Ming Song, Kaiyan Liu, Ping Chen, Allison Chang, Jianhua Ling, Paul J Chiao, Yumin Hu, Peng Huang
cis-Diamminedichloroplatinum/cisplatin (CDDP) is a major drug used in cancer chemotherapy; however, the toxic side-effects and development of drug resistance represent major challenges to the clinical use of CDDP. The aim of the present study was to identify effective drug combination regimens through high-throughput drug screening that can enhance the efficacy of CDDP, and to investigate the underlying mechanisms. A cell-based high-throughput screening methodology was implemented, using a library of 1,280 Food and Drug Administration (FDA)-approved drugs, to identify clinical compounds that act synergistically with CDDP...
June 19, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956739/microrna-494-acts-as-a-tumor-suppressor-in-pancreatic-cancer-inhibiting-epithelial-mesenchymal-transition-migration-and-invasion-by-binding-to-sdc1
#19
Ying Yang, Xiong Tao, Chun-Bo Li, Chang-Miao Wang
Pancreatic cancer (PC) is the fourth most common cause of cancer‑related mortality in the industrialized world. Emerging evidence indicates that a variety of microRNAs (miRNAs or miRs) are involved in the development of PC. The aim of the present study was to elucidate the mechanisms through which miR‑494 affects the epithelial‑mesenchymal transition (EMT) and invasion of PC cells by binding to syndecan 1 (SDC1). PC tissues and pancreatitis tissues were collected, and the regulatory effects of miR‑494 on SDC1 were validated using bioinformatics analysis and a dual‑luciferase report gene assay...
June 19, 2018: International Journal of Oncology
https://www.readbyqxmd.com/read/29956735/krab-zinc-finger-protein-382-regulates-epithelial-mesenchymal-transition-and-functions-as-a-tumor-suppressor-but-is-silenced-by-cpg-methylation-in-gastric-cancer
#20
Lijiao Pei, Xiaoqian He, Shuman Li, Ran Sun, Qin Xiang, Guosheng Ren, Tingxiu Xiang
Several studies have recently reported that KRAB zinc finger protein 382 (ZNF382) is downregulated in multiple carcinoma types due to promoter methylation. The exact role of ZNF382 in gastric carcinogenesis, however, remains elusive. In this study, we investigated the alterations and functions of ZNF382 in the pathogenesis of gastric cancer (GC). Semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR), quantitative (real-time) PCR (qPCR) and immunohistochemistry were carried out to detect the expression patterns of ZNF382 in GC cell lines and gastric tissue samples...
June 19, 2018: International Journal of Oncology
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