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Cancer Science

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https://www.readbyqxmd.com/read/28421697/endothelium-originated-from-colorectal-cancer-stem-cells-constitute-cancer-blood-vessels
#1
Wenqi Shangguan, Chuanwen Fan, Xiaolong Chen, Ran Lu, Yuan Liu, Yu Li, Yanna Shang, Dongqin Yin, Shengliang Zhang, Qiaorong Huang, Xue Li, Wentong Meng, Hong Xu, Zongguang Zhou, Jiankun Hu, Xianming Mo
Tumor growth depends on the formation of blood vessels that provide the supply of nutrients and oxygen. Previous data have shown that glioblastoma stem cells are able to give rise to vascular cells to constitute the functional vessels in tumor tissues. However, which kinds of vascular cells generated from glioblastoma stem cells are largely debated. In addition, there is little evidence showing that the stem cells from other kinds of tumors can produce vascular cells to constitute the functional blood vessels in tumor tissues...
April 18, 2017: Cancer Science
https://www.readbyqxmd.com/read/28418226/serum-monomeric-laminin-%C3%AE-2-as-a-novel-biomarker-for-hepatocellular-carcinoma
#2
Hirofumi Kiyokawa, Hiroshi Yasuda, Ritsuko Oikawa, Chiaki Okuse, Nobuyuki Matsumoto, Hiroki Ikeda, Tsunamasa Watanabe, Hiroyuki Yamamoto, Fumio Itoh, Takehito Otsubo, Toru Yoshimura, Eisaku Yoshida, Masatoshi Nakagawa, Naohiko Koshikawa, Motoharu Seiki
The diagnosis of hepatocellular carcinoma (HCC) in the early stages is important for successful clinical management. Laminin (Ln)-γ2 expression has been reported in various types of malignant carcinomas. We recently developed a highly sensitive method to measure serum monomeric Ln-γ2 levels using a fully automated chemiluminescent immunoassay (CLIA). Using our CLIA, we evaluated its diagnostic value in sera from patients with chronic liver disease (CLD) and patients with hepatocellular carcinoma (HCC). Serum alpha-fetoprotein (AFP) and des-gamma-carboxy prothrombin (DCP) were also examined in these subjects...
April 18, 2017: Cancer Science
https://www.readbyqxmd.com/read/28418119/endoplasmic-reticulum-stress-pathway-perk-eif2%C3%AE-confers-radioresistance-in-oropharyngeal-carcinoma-by-activating-nf-%C3%AE%C2%BAb
#3
Qiao Qiao, Chaonan Sun, Chuyang Han, Ning Han, Miao Zhang, Guang Li
Endoplasmic reticulum stress (ERS) plays an important role in the pathogenesis and development of malignant tumours, as well as in the regulation of radio- and chemoresistance in many malignancies. ERS signalling pathway protein kinase RNA-like endoplasmic reticulum kinase (PERK) -eukaryotic initiation factor-2 (eIF2α) may induce aberrant activation of nuclear factor-κB (NF-κB). Our previous study showed that NF-κB confered radioresistance in lymphoma cells. However, whether PERK-eIF2α regulates radioresistance in oropharyngeal carcinoma through NF-κB activation is unknown...
April 18, 2017: Cancer Science
https://www.readbyqxmd.com/read/28418085/puquitinib-a-novel-orally-available-pi3k%C3%AE-inhibitor-exhibits-potent-antitumor-efficacy-against-acute-myeloid-leukemia
#4
Chengying Xie, Ye He, Mingyue Zhen, Yulan Wang, Yongping Xu, Liguang Lou
The PI3Kδ isoform (PIK3CD), also known as P110δ, is predominately expressed in leukocytes and has been implicated as a potential target in the treatment of hematological malignancies. In this report, we detailed the pharmacologic properties of puquitinib, a novel, orally available PI3Kδ inhibitor. Puquitinib, which binds to the ATP-binding pocket of PI3Kδ, was highly selective and potent for PI3Kδ relative to other PI3K I isoforms and a panel of protein kinases, exhibiting low-nanomolar biochemical and cellular inhibitory potencies...
April 18, 2017: Cancer Science
https://www.readbyqxmd.com/read/28417530/rhogdi%C3%AE-%C3%A2-is%C3%A2-a%C3%A2-potential%C3%A2-prognostic%C3%A2-biomarker%C3%A2-and%C3%A2-controls%C3%A2-telomere-regulation%C3%A2-in%C3%A2-colorectal%C3%A2-cancer
#5
Dandan Huang, Weisi Lu, Shaomin Zou, Huaiming Wang, Yuanling Jiang, Xiya Zhang, Pengqing Li, Zhou Songyang, Lei Wang, Jianping Wang, Junjiu Huang, Lekun Fang
RhoGDIα is an essential regulator for Rho GTPases. Although RhoGDIα may serve as an oncogene in colorectal cancer (CRC), the underlying mechanism is still unclear. Here,we investigate the function, mechanism, and clinical significance of RhoGDIα in CRC progression. We founded that downregulation of RhoGDIα repressed CRC cell proliferation, motility and invasion. Overexpression of RhoGDIα increased DNA damage response signals at telomeres, and led to telomere shortening in CRC cells, also being validated in 26 pairs of CRC tissues...
April 17, 2017: Cancer Science
https://www.readbyqxmd.com/read/28406576/antitumor-activity-and-pharmacologic-characterization-of-the-depsipeptide-analog-as-a-novel-hdac-pi3k-dual-inhibitor
#6
Ken Saijo, Hiroo Imai, Sonoko Chikamatsu, Koichi Narita, Tadashi Katoh, Chikashi Ishioka
Histone deacetylase (HDAC)/phosphatidylinositol 3-kinase (PI3K) dual inhibition is a promising strategy for the treatment of intractable cancers because of the advantages of overcoming potential resistance and exhibiting synergistic effects. Therefore, development of an HDAC/PI3K dual inhibitor is reasonably attractive. Romidepsin (FK228, depsipeptide) is a potent HDAC inhibitor. We have previously reported that depsipeptide and its analogs have an additional activity as PI3K inhibitors and are defined as HDAC/PI3K dual inhibitors...
April 12, 2017: Cancer Science
https://www.readbyqxmd.com/read/28406574/anti-tumor-effect-of-fak-inhibitor-pf562271-against-human-osteosarcoma-in-vitro-and-in-vivo
#7
Chuanzhen Hu, Xu Chen, Junxiang Wen, Liangzhi Gong, Zhuochao Liu, Jun Wang, Jing Liang, Fangqiong Hu, Qi Zhou, Li Wei, Yuhui Shen, Weibin Zhang
Focal adhesion kinase (FAK) overexpression is related to the invasive and metastatic property in different kind of cancers. Target therapy by inhibiting FAK has achieved promising effect in some cancer treatment, but its effect in human osteosarcoma has not yet well studied. In present study, we analyzed the anti-tumor efficacy of PF562271, a FAK inhibitor, against osteosarcoma in vitro and vivo. p-FAK (Y397) was highly expressed in primary human osteosarcoma tumor samples and was associated with osteosarcoma prognosis and lung metastasis...
April 12, 2017: Cancer Science
https://www.readbyqxmd.com/read/28406546/role-of-hepatic-resection-in-patients-with-intermediate-stage-hepatocellular-carcinoma-a-multicenter-study-from-japan
#8
Toshifumi Tada, Takashi Kumada, Hidenori Toyoda, Kunihiko Tsuji, Atsushi Hiraoka, Ei Itobayashi, Kazuhiro Nouso, Kazuya Kariyama, Toru Ishikawa, Masashi Hirooka, Yoichi Hiasa
Transarterial chemoembolization (TACE) is recommended for patients with intermediate-stage (Barcelona Clinic Liver Cancer (BCLC) criteria B, BCLC-B) hepatocellular carcinoma (HCC). However, patients with BCLC-B HCC can differ in background factors related to hepatic function as well as tumor size and number. In the present study, we clarified the role of hepatic resection in patients with BCLC-B HCC. A total of 489 BCLC-B HCC patients with Child-Pugh class A disease initially treated with hepatic resection or TACE were included...
April 12, 2017: Cancer Science
https://www.readbyqxmd.com/read/28394473/cyc1-in-ductal-carcinoma-in-situ-of-breast-associated-with-proliferation-and-comedo-necrosis
#9
Mayuko Chishiki, Kiyoshi Takagi, Ai Sato, Yasuhiro Miki, Yuta Yamamoto, Akiko Ebata, Yukiko Shibahara, Mika Watanabe, Takanori Ishida, Hironobu Sasano, Takashi Suzuki
It is well known that comedo necrosis is closely associated with an aggressive phenotype of ductal carcinoma in situ (DCIS) of human breast, but its molecular mechanisms have remained largely unclear. Therefore, in this study, we first examined gene expression profile of comedo DCIS based on microarray data and identified CYC1 as a gene associated with comedo necrosis. CYC1 (cytochrome c1) is a subunit of complex III in the mitochondrial oxidative phosphorylation (OXPHOS) that involves in energy production...
April 10, 2017: Cancer Science
https://www.readbyqxmd.com/read/28388007/aberrant-intracellular-metabolism-of-t-dm1-confers-t-dm1-resistance-in-her2-positive-gastric-cancer-cells
#10
Hongbin Wang, Wenqian Wang, Yongping Xu, Yong Yang, Xiaoyan Chen, Haitian Quan, Liguang Lou
T-DM1 (Kadcyla), an antibody-drug conjugate (ADC) consisting of HER2-targeted monoclonal antibody trastuzumab linked to anti-microtubule agent mertansine (DM1), has been approved for the treatment of HER2-positive metastatic breast cancer. To date, acquired resistance arises to be a major obstacle to T-DM1 treatment, and mechanisms remain incompletely understood. In the present study, we established a T-DM1-resistant N87-KR cell line from HER2-positive N87 gastric cancer cells to investigate mechanisms of acquired resistance and develop strategies for overcoming it...
April 7, 2017: Cancer Science
https://www.readbyqxmd.com/read/28387999/decreased-expression-of-acss2-promotes-metastasis-and-predicts-poor-prognosis-in-hepatocellular-carcinoma
#11
Lin Sun, Yinlong Kong, Manqing Cao, Hongyuan Zhou, Huikai Li, Yunlong Cui, Feng Fang, Wei Zhang, Jiafeng Li, Xiaolin Zhu, Qiang Li, Tianqiang Song, Ti Zhang
Metastasis is a serious risk that may occur during the treatment of hepatocellular carcinoma (HCC), preventing many patients from being surgical candidates and contributing to poor prognosis. Hypoxia has been proved to be an important factor of metastasis via the epithelial-mesenchymal transition (EMT) pathway. Acetyl-CoA synthase 2 (ACSS2) provides an acetyl group for the acetylation of hypoxia-inducible factor (HIF)-2α, and this epigenetic modification affects the activity of HIF-2α and the subsequent EMT process...
April 7, 2017: Cancer Science
https://www.readbyqxmd.com/read/28387985/clinicopathological-significance-of-mir-146a-wasf2-axis-in-gastric-cancer
#12
Qunyan Yao, Chuantao Tu, Di Lu, Yanting Zou, Hongchun Liu, Shuncai Zhang
Gastric cancer (GC) is one of the most common malignancies, and cancer invasion and metastasis are the leading causes of cancer-induced death in GC patients. WASF2 (WASP-family verprolin-homologous protein-2), with a role controlling actin polymerization which is critical in the formation of membrane protrusions involved in cell migration and invasion, has been demonstrated to possess cancer-promoting effects in several cancers. However, Data of WASF2's role in GC is relatively few and even contradictory. In this study, we analyzed WASF2's expression in GC tissues and their corresponding adjacent normal tissues...
April 7, 2017: Cancer Science
https://www.readbyqxmd.com/read/28383806/socioeconomic-factors-and-survival-in-patients-with-non-metastatic-head-and-neck-squamous-cell-carcinoma
#13
Cheng Xu, Yu-Pei Chen, Xu Liu, Ling-Long Tang, Lei Chen, Yan-Ping Mao, Yuan Zhang, Rui Guo, Guan-Qun Zhou, Wen-Fei Li, Ai-Hua Lin, Ying Sun, Jun Ma
The effect of socioeconomic factors on receipt of definitive treatment and survival outcomes in non-metastatic head and neck squamous cell carcinoma (HNSCC) remains unclear. Eligible patients (n = 37,995) were identified from the United States Surveillance, Epidemiology and End Results (SEER) database between 2007 and 2012. Socioeconomic factors (i.e., median household income, education level, unemployment rate, insurance status, marital status and residence) were included in univariate/multivariate Cox regression analysis; validated factors were used to generate nomograms for cause-specific survival (CSS) and overall survival (OS), and a prognostic score model for risk stratification...
April 6, 2017: Cancer Science
https://www.readbyqxmd.com/read/28380678/clinicopathological-analysis-of-methotrexate-associated-lymphoproliferative-disorders-comparison-of-diffuse-large-b-cell-lymphoma-and-classical-hodgkin-lymphoma-types
#14
Yuka Gion, Noriko Iwaki, Katsuyoshi Takata, Mai Takeuchi, Keiichiro Nishida, Yorihisa Orita, Tomoyasu Tachibana, Tadashi Yoshino, Yasuharu Sato
Patients with rheumatoid arthritis often develop methotrexate-associated lymphoproliferative disorders (MTX-LPD) during MTX treatment. MTX-LPD occasionally regresses spontaneously after simply discontinuing MTX treatment. In patients without spontaneous regression, additional chemotherapy is required to avoid disease progression. However, the differences between spontaneous and non-spontaneous regression have yet to be elucidated. To clarify the factors important for spontaneous regression, we analyzed the clinicopathological features of 51 patients with rheumatoid arthritis who developed MTX-LPD (diffuse large B-cell lymphoma [DLBCL]-type [n = 34] and classical Hodgkin lymphoma [CHL]-type [n = 17])...
April 5, 2017: Cancer Science
https://www.readbyqxmd.com/read/28378944/chloride-intracellular-channel-1-regulates-the-antineoplastic-effects-of-metformin-in-gallbladder-cancer-cells
#15
Yongchen Liu, Zheng Wang, Maolan Li, Yuanyuan Ye, Yi Xu, Yichi Zhang, Ruiyan Yuan, Yunpeng Jin, Yajuan Hao, Lin Jiang, Yunping Hu, Shili Chen, Fatao Liu, Yijian Zhang, Wenguang Wu, Yingbin Liu
Metformin is the most commonly used drug for type 2 diabetes and has potential benefit in treating and preventing cancer. Previous studies indicated that membrane proteins can affect the antineoplastic effects of metformin and may be crucial in the field of cancer research. However, the antineoplastic effects of metformin and its mechanism in gallbladder cancer (GBC) remain largely unknown. In this study, the effects of metformin on GBC cell proliferation and viability were evaluated using the Cell Counting Kit-8 (CCK-8) assay and an apoptosis assay...
April 5, 2017: Cancer Science
https://www.readbyqxmd.com/read/28375585/down-regulation-of-talin1-promotes-hepatocellular-carcinoma-progression-via-activation-of-the-erk1-2-pathway
#16
Chen Peijuan, Lei Ling, Wang Jian, Zou Xuejing, Zhang Dongyan, Deng Ling, Wu Dehua
Talin1 is an adaptor protein that conjugates integrins to the cytoskeleton and regulates integrins and focal adhesion signaling. Several studies have found that Talin1 is over-expressed in several tumor types and promotes tumor progression. However, the explicit role of Talin1 in hepatocellular carcinoma (HCC) progression is still unclear and its functional mechanism remains largely unknown. In this study, we showed a trend of gradually decreasing expression of Talin1 from normal liver tissues to hepatocirrhosis, liver hyperplasia, the corresponding adjacent non-tumor, primary HCC and eventually metastatic foci, indicating that Talin1 maybe correlate with HCC initiation to progression...
April 4, 2017: Cancer Science
https://www.readbyqxmd.com/read/28371195/intratumoral-bidirectional-transitions-between-epithelial-and-mesenchymal-cells-in-triple-negative-breast-cancer
#17
Mizuki Yamamoto, Kota Sakane, Kana Tominaga, Noriko Gotoh, Takayoshi Niwa, Yasuko Kikuchi, Keiichiro Tada, Naoki Goshima, Kentaro Semba, Jun-Ichiro Inoue
Epithelial-mesenchymal transition (EMT) and its reverse process, MET, are crucial in several stages of cancer metastasis. EMT allows cancer cells to move to proximal blood vessels for intravasation. However, because EMT and MET processes are dynamic, mesenchymal cancer cells are likely to undergo MET transiently and subsequently re-undergo EMT to restart the metastatic process. Therefore, spatiotemporally-coordinated mutual regulation between EMT and MET could occur during metastasis. To elucidate such regulation, we chose HCC38, a human triple-negative breast cancer cell line, because HCC38 is composed of epithelial and mesenchymal populations at a fixed ratio even though mesenchymal cells proliferate significantly more slowly than epithelial cells...
April 1, 2017: Cancer Science
https://www.readbyqxmd.com/read/28370718/m2-like-macrophage-polarization-in-high-lactic-acid-producing-head-and-neck-cancer
#18
Toshimitsu Ohashi, Mitsuhiro Aoki, Hiroyuki Tomita, Takashi Akazawa, Katsuya Sato, Bunya Kuze, Keisuke Mizuta, Akira Hara, Hitoshi Nagaoka, Norimitsu Inoue, Yatsuji Ito
Reprogramming of glucose metabolism in tumor cells is referred to as the Warburg effect and results in increased lactic acid secretion into the tumor microenvironment. We have previously shown that lactic acid has important roles as a proinflammatory and immunosuppressive mediator and promotes tumor progression. In this study, we examined the relationship between the lactic acid concentration and expression of lactate dehydrogenase-A (LDHA) and glucose transporter-1 (GLUT1), which are related to the Warburg effect, in human head and neck squamous cell carcinoma (HNSCC)...
April 1, 2017: Cancer Science
https://www.readbyqxmd.com/read/28370702/effects-of-smyd2-mediated-eml4-alk-methylation-on-the-signaling-pathway-and-growth-in-non-small-cell-lung-cancer-cells
#19
Rui Wang, Xiaolan Deng, Yuichiro Yoshioka, Theodore Vougiouklakis, Jae-Hyun Park, Takehiro Suzuki, Naoshi Dohmae, Koji Ueda, Ryuji Hamamoto, Yusuke Nakamura
A specific subtype of non-small cell lung cancer (NSCLC) characterized with an EML4-ALK fusion gene, which drives constitutive oncogenic activation of ALK kinase, shows a good clinical response to ALK inhibitors. We have reported multiple examples implying the biological significance of methylation on non-histone proteins including oncogenic kinases in human carcinogenesis. Through the process to search substrates for various methyltransferases using an in vitro methyltransferase assay, we found that a lysine methyltransferase SMYD2 could methylate lysine residues 1451, 1455 and 1610 in ALK protein...
April 1, 2017: Cancer Science
https://www.readbyqxmd.com/read/28346728/nubpl-a-novel-metastasis-related-gene-promotes-colorectal-carcinoma-cell-motility-by-inducing-emt
#20
Yuhui Wang, Nan Wu, Donglin Sun, Haiming Sun, Dandan Tong, Duo Liu, Bo Pang, Su Li, Jia Wei, Jialin Dai, Yang Liu, Jing Bai, Jingshu Geng, Songbin Fu, Yan Jin
NUBPL is an assembly factor for human mitochondrial complex I, which is the biggest member of mitochondrial respiratory chain. However, the relationship between NUBPL and carcinoma progression remains unknown. In this study, NUBPL was characterized for its role in colorectal cancer (CRC) and the underlying molecular mechanisms. Data (n=197) from Oncomine database revealed that mRNA levels of NUBPL were remarkably overexpressed in CRC tissues compared with normal tissues. In addition, immunohistochemical analysis of 75 pairs of CRC and nontumorous tissues demonstrated that expression level of NUBPL was significantly higher in CRC tissues, and its expression level was positively associated with lymph node metastasis (P=0...
March 27, 2017: Cancer Science
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