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https://www.readbyqxmd.com/read/28628187/klf2-inhibits-cell-growth-via-regulating-hif-1%C3%AE-notch-1-signal-pathway-in-human-colorectal-cancer-hct116-cells
#1
Hai-Gang Wang, Bin Cao, Li-Xian Zhang, Nan Song, Hui Li, Wen-Zeng Zhao, Yan-Shu Li, Shun-Mao Ma, Dong-Jian Yin
The transcription factor Krüppel-like factor 2 (KLF2) has been shown to function as a tumor suppressor and regulate biological processes of cancer cells, such as cell growth, cell apoptosis and angiogenesis. However, the function and mechanism of KLF2 in colorectal cancer (CRC) is still unknown. In the present study, we show that the expression of KLF2 is diminished in a cohort of CRC cell lines. Also, KLF2 overexpression remarkably inhibits HCT116 and SW480 cell survival and proliferation. Moreover, cell death detection ELISA plus assay showed that KLF2 overexpression increased HCT116 cell proliferation...
July 2017: Oncology Reports
https://www.readbyqxmd.com/read/28628136/-effects-of-equol-on-colon-cancer-cell-proliferation
#2
Y F Cai, H M Zhang, W Y Niu, Y Q Zou, D F Ma
OBJECTIVE: To investigate the effect of equol on the proliferation of colom cancer cells and to explore the mechanisms. METHODS: Colon cancer cells (DLD1,HCT15,COLO205,LOVO,SW480) were incubated, the cell proliferation was identified by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide cell proliferation assay. Reverse transcription PCR and Western blot were used to measure the mRNA and the protein expression of estrogen receptor and nuclear factor (erythroid-derived 2)-like 2 (Nrf2)in the colon cancer cells, respectively...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28622054/down-regulation-of-liver-intestine-cadherin-enhances-noscapine-induced-apoptosis-in-human-colon-cancer-cells
#3
Xia Tian, Meng Liu, Qingxi Zhu, Jie Tan, Weijie Liu, Yanfen Wang, Wei Chen, Yanli Zou, Yishan Cai, Zheng Han, Xiaodong Huang
OBJECTIVES: Liver-intestine cadherin (CDH17) as a novel type of cadherin can significantly suppresses tumor growth in colon cancer cells. Noscapine is one of the most widely used antineoplastic agents in the treatment of solid tumor and haematological malignancies. The aim of the present study was to explore the signaling pathway of noscapine which induces apoptosis by blocking CDH17 gene in colon cancer SW480 cells. METHODS: Human colon cancer SW480 cells were transfected with CDH17 interference vector and treatment with 10 µmol/L noscapine...
June 16, 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28614697/navicularines-a-c-new-diterpenoid-alkaloids-from-aconitum-naviculare-and-their-cytotoxic-activities
#4
Jiang-Bo He, Jie Luan, Xiao-Man Lv, Dan-Yun Rui, Jian Tao, Bo Wang, Yan-Feng Niu, Hong-Ping Ju
Three new bisditerpenoid alkaloids, navicularines A-C (1-3), and three known ones (4-6), were isolated from the ground parts of Aconitum naviculare. Their structures were elucidated by spectroscopic methods. All the new compounds were tested against five cell lines (HL-60, SMMC-7721, A-549, MCF-7, SW480). It was found that navicularine B exhibited certain cytotoxic activities in vitro, with IC50 values of 13.50, 18.52, 17.22, 11.18, and 16.36μM, respectively.
June 11, 2017: Fitoterapia
https://www.readbyqxmd.com/read/28600556/aldose-reductase-inhibitor-increases-doxorubicin-sensitivity-of-colon-cancer-cells-and-decreases-cardiotoxicity
#5
Himangshu Sonowal, Pabitra B Pal, Jian-Jun Wen, Sanjay Awasthi, Kota V Ramana, Satish K Srivastava
Anthracycline drugs such as doxorubicin (DOX) and daunorubicin remain some of the most active wide-spectrum and cost-effective drugs in cancer therapy. However, colorectal cancer (CRC) cells are inherently resistant to anthracyclines which at higher doses cause cardiotoxicity. Our recent studies indicate that aldose reductase (AR) inhibitors such as fidarestat inhibit CRC growth in vitro and in vivo. Here, we show that treatment of CRC cells with fidarestat increases the efficacy of DOX-induced death in HT-29 and SW480 cells and in nude mice xenografts...
June 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28597984/dual-inhibition-of-bdnf-trkb-and-autophagy-a-promising-therapeutic-approach-for-colorectal-cancer
#6
Clément Mazouffre, Sophie Geyl, Aurélie Perraud, Sabrina Blondy, Marie-Odile Jauberteau, Muriel Mathonnet, Mireille Verdier
Colorectal cancer (CRC) is the most common digestive cancer in the Western world. Despite effective therapies, resistance and/or recurrence frequently occur. The present study investigated the impact of two survival pathways-neurotrophic factors (TrkB/BDNF) and autophagy-on cell fate and tumour evolution. In vitro studies were performed on two CRC cell lines, SW480 (primary tumour) and SW620 (lymph node invasion), which were also used for subcutaneous xenografts on a nude mouse model. In addition, the presence of neurotrophic factors (NTs) and autophagy markers were assessed in tissue samples representative of different stages...
June 9, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28597038/the-cardiac-glycoside-oleandrin-induces-apoptosis-in-human-colon-cancer-cells-via-the-mitochondrial-pathway
#7
Li Pan, Yuming Zhang, Wanlu Zhao, Xia Zhou, Chunxia Wang, Fan Deng
PURPOSE: Evidence indicates that the cardiac glycoside oleandrin exhibits cytotoxic activity against several different types of cancer. However, the specific mechanisms underlying oleandrin-induced anti-tumor effects remain largely unknown. The present study examined the anti-cancer effect and underlying mechanism of oleandrin on human colon cancer cells. METHODS: The cytotoxicity and IC50 of five small molecule compounds (oleandrin, neriifolin, strophanthidin, gitoxigenin, and convallatoxin) in human colon cancer cell line SW480 cells and normal human colon cell line NCM460 cells were determined by cell counting and MTT assays, respectively...
June 8, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28587286/novel-structurally-related-flavones-augment-cell-death-induced-by-rhstrail
#8
Joanna Bronikowska, Ewelina Szliszka, Edyta Kostrzewa-Susłow, Dagmara Jaworska, Zenon P Czuba, Piotr Bednarski, Wojciech Król
TRAIL (tumor necrosis factor-related apoptosis-inducing ligand) was identified as a powerful activator of apoptosis in tumor cells and one of the most promising candidates for cancer therapy with no toxicity against normal tissues. However, many tumor cells are resistant to TRAIL-induced apoptosis. The aim of this work was to analyze the improvement of the anticancer effect of rhsTRAIL (recombinant human soluble TRAIL) by nine flavones: 5-Hydroxyflavone, 6-Hydroxyflavone, 7-Hydroxyflavone and their new synthetic derivatives 5-acetoxyflavone, 5-butyryloxyflavone, 6-acetoxyflavone, 6-butyryloxyflavone, 7-acetoxyflavone and 7-butyryloxyflavone...
June 6, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28581703/anion-exchange-chromatography-coupled-to-high-resolution-mass-spectrometry-a-powerful-tool-for-merging-targeted-and-non-targeted-metabolomics
#9
Michaela Schwaiger, Evelyn Rampler, Gerrit Hermann, Walter Miklos, Walter Berger, Gunda Koellensperger
In this work, simultaneous targeted metabolic profiling by isotope dilution and non-targeted fingerprinting is proposed for cancer cell studies. The novel streamlined metabolomics workflow was established using anion-exchange chromatography (IC) coupled to high resolution mass spectrometry (MS). The separation time of strong anion-exchange (2 mm column, flow rate 380 µL min(-1), injection volume 5 µL) could be decreased to 25 min for a target list comprising organic acids, sugars, sugar phosphates and nucleotides...
June 5, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28578001/1%C3%AE-25-dihydroxyvitamin-d3-enhances-trpv6-transcription-through-p38-mapk-activation-and-gadd45-expression
#10
Michiyasu Ishizawa, Daisuke Akagi, Jumpei Yamamoto, Makoto Makishima
The active form of vitamin D, 1α,25-dihydroxyvitamin D3 [1,25(OH)2D3], acts as a ligand for the vitamin D receptor (VDR), and regulates various physiological processes, including calcium and bone metabolism, cellular growth and differentiation, immunity and cardiovascular function. A number of vitamin D derivatives have been synthesized for the treatment of cancer and inflammatory disease, but the adverse effect of hypercalcemic activity due to intestinal calcium absorption has limited wide clinical application...
May 31, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28576498/characterization-of-cancer-stem-cell-drug-resistance-in-the-human-colorectal-cancer-cell-lines-hct116-and-sw480
#11
Stacey J Butler, Lisa Richardson, Nathan Farias, Jodi Morrison, Brenda L Coomber
BACKGROUND: Cancer stem cells (CSCs) share a number of properties with somatic stem cells including heightened protective mechanisms and the ability to self-renew. CSCs are a critical subpopulation of cancer cells implicated in tumor formation, metastases and recurrence. METHODS: We used serial colonosphere culture to enrich for CSCs from two human CRC cell lines. The expression of proposed colorectal CSC markers and multi-drug resistance genes were assessed via flow cytometry and RT-qPCR...
May 30, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28573788/in-vitro-additive-antitumor-effects-of-dimethoxycurcumin-and-5-fluorouracil-in-colon-cancer-cells
#12
Huiying Zhao, Qingchun Liu, Saisai Wang, Fang Dai, Xiaofei Cheng, Xiaobin Cheng, Wenbin Chen, Min Zhang, Dong Chen
Dimethoxycurcumin (DMC) is a lipophilic analog of curcumin, an effective treatment for colon cancer, which has greater chemical and metabolic stability. Chemotherapy treatments, such as 5-fluorouracil (5-Fu), play a key role in the current management of colon cancer. In this study, we investigated the antitumor efficacy of DMC in combination with 5-Fu in SW480 and SW620 colon cancer cells. CCK-8 assay was used to evaluate the inhibitory effect of DMC and 5-Fu on cancer cells proliferation, and the combination index was calculated...
June 2, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28572156/g-protein-coupled-receptor-kinase-2-is-a-critical-regulator-of-tnf%C3%AE-signaling-in-colon-epithelial-cells
#13
Michael Steury, Peter C Lucas, Laura R McCabe, Narayanan Parameswaran
G protein-coupled receptor kinase-2 (GRK2) belongs to the GRK family of serine/threonine protein kinases critical in the regulation of GPCRs. Apart from this canonical role, GRK2 is also involved in several signaling pathways via distinct intracellular interactomes. In this study, we examined the role of GRK2 in TNFα signaling in colon epithelial cell-biological processes including wound healing, proliferation, apoptosis, and gene expression. Knockdown of GRK2 in the SW480 human colonic cells significantly enhanced TNFα-induced epithelial cell wound healing without any effect on apoptosis/proliferation...
June 1, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/28562687/the-four-transmembrane-protein-mal2-and-tumor-protein-d52-tpd52-are-highly-expressed-in-colorectal-cancer-and-correlated-with-poor-prognosis
#14
Jingwen Li, Yongmin Li, He Liu, Yanlong Liu, Binbin Cui
The four-transmembrane protein MAL2 and tumor protein D52 (TPD52) have been shown to be involved in tumorigenesis of various cancers. However, their roles in colorectal cancer (CRC) remain unclear. In this study, we explored the expressions of MAL2 and TPD52 in tumor specimens resected from 123 CRC patients and the prognostic values of the two proteins in CRC. Immunohistochemical analyses showed that MAL2 (P<0.001) and TPD52 (P<0.001) were significantly highly expressed in primary carcinoma tissues compared with adjacent non-cancerous mucosa tissues...
2017: PloS One
https://www.readbyqxmd.com/read/28560460/synthetic-lethal-interaction-of-cdk-inhibition-and-autophagy-inhibition-in-human-solid-cancer-cell-lines
#15
Yoshinari Okada, Shunsuke Kato, Yasuhiro Sakamoto, Takayuki Oishi, Chikashi Ishioka
Cell cycle control is a promising target in cancer treatments, and some small-molecule cyclin-dependent kinase (CDK) inhibitors have exhibited clinical effectiveness. However, no biomarkers predictive of efficacy have been developed. Recent studies have revealed that CDK inhibitor (CKI) proteins, such as p27 and p16, also induced cytoprotective autophagy in cancer cells. However, it is unclear whether small-molecule CKIs also induce autophagy in solid tumors, as induced autophagy promotes cancer cell survival...
May 30, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28558381/aldolase-b-overexpression-is-associated-with-poor-prognosis-and-promotes-tumor-progression-by-epithelial-mesenchymal-transition-in-colorectal-adenocarcinoma
#16
Qingguo Li, Yaqi Li, Junyan Xu, Sheng Wang, Ye Xu, Xinxiang Li, Sanjun Cai
BACKGROUND: Glycolysis is considered to be the root of cancer development and progression, which involved a multi-step enzymatic reaction. Our study aimed at figuring out which glycolysis enzyme participates in the development of colorectal cancer and its possible mechanisms. METHODS: We firstly screened out Aldolase B (ALDOB) by performing qRT-PCR arrays of glycolysis-related genes in five paired liver metastasis and primary colorectal tissues, and further detected ALDOB protein with immunohistochemistry in tissue microarray (TMA) consisting of 229 samples from stage I-III colorectal cancer patients...
2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28548041/foxr2-promotes-the-proliferation-invasion-and-epithelial-mesenchymal-transition-in-human-colorectal-cancer-cells
#17
Sheng-Qiang Lu, Yan Qiu, Wei-Jie Dai, Xiao-Yu Zhang
Forkhead box R2 (FOXR2), a member of the FOX gene family, has not been very well investigated for its role in cancer. A recent study has shown that FOXR2 is highly expressed in breast cancer samples and is associated with poor prognosis. In addition, FOXR2 was identified as an oncogene in medulloblastoma. Nevertheless, whether FOXR2 plays a role in colorectal cancer (CRC) remains unclear. In the present study, we conducted several in vitro and in vivo studies to investigate the expression and effect of FOXR2 in CRC...
May 24, 2017: Oncology Research
https://www.readbyqxmd.com/read/28546951/common-chemotherapeutic-agents-modulate-fatty-acid-distribution-in-human-hepatocellular-carcinoma-and-colorectal-cancer-cells
#18
Amir Mehdizadeh, Morteza Bonyadi, Masoud Darabi, Reza Rahbarghazi, Soheila Montazersaheb, Kobra Velaei, Maghsood Shaaker, Mohammad-Hossein Somi
Introduction: Cancer cells are critically correlated with lipid molecules, particularly fatty acids, as structural blocks for membrane building, energy sources, and related signaling molecules. Therefore, cancer progression is in direct correlation with fatty acid metabolism. The aim of this study was to investigate the potential effects of common chemotherapeutic agents on the lipid metabolism of hepatocellular carcinoma (HCC) and colorectal cancer (CRC) cells, with a focus on alterations in cellular fatty acid contents...
2017: BioImpacts: BI
https://www.readbyqxmd.com/read/28544335/p62-sequestosome-1-in-human-colorectal-carcinoma-as-a-potent-prognostic-predictor-associated-with-cell-proliferation
#19
Shun Nakayama, Hideaki Karasawa, Takashi Suzuki, Shinichi Yabuuchi, Kiyoshi Takagi, Takashi Aizawa, Yoshiaki Onodera, Yasuhiro Nakamura, Mika Watanabe, Fumiyoshi Fujishima, Hiroshi Yoshida, Takanori Morikawa, Tomohiko Sase, Takeshi Naitoh, Michiaki Unno, Hironobu Sasano
p62/sequestosome 1 (p62) is a multi-domain protein that functions as a receptor for ubiquitinated targets in the selective autophagy and serves as a scaffold in various signaling cascades. p62 have been reported to be up-regulated in several human malignancies, but the biological roles and significance of p62 are still poorly understood in colorectal carcinoma. We immunohistochemically evaluated p62 in 118 colorectal adenocarcinoma and 28 colorectal adenoma cases. We used four colon carcinoma cells (HCT8, HT29, COLO320, and SW480) in the in vitro studies...
June 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28539527/effects-of-zebularine-on-invasion-activity-and-intracellular-expression-level-of-let-7b-in-colorectal-cancer-cells
#20
Shota Tanaka, Mika Hosokawa, Jyuri Matsumura, Emi Matsubara, Aika Kobori, Kumiko Ueda, Seigo Iwakawa
The effects of zebularine, a DNA methyltransferase inhibitor, on the invasion activity as well as intracellular expression level of let-7b, tumor suppressor microRNA, were examined in three human colorectal cancer (CRC) cell lines: SW480, SW620, and oxaliplatin-resistant SW620 (SW620/OxR). Zebularine suppressed the invasion activity of SW620 and SW620/OxR cells. The intracellular expression level of let-7b was up-regulated by zebularine in SW620 and SW620/OxR cells. The overexpression of let-7b by the transfection of let-7b mimic suppressed invasion activity in SW620 and SW620/OxR cells...
May 25, 2017: Biological & Pharmaceutical Bulletin
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