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https://www.readbyqxmd.com/read/28748258/ezh2-is-involved-in-silencing-of-wnt5a-during-epithelial-mesenchymal-transition-of-colon-cancer-cell-line
#1
Jianxin Tao, Liping Shi, Longchang Huang, Haoze Shi, Hang Chen, Yixin Wang, Tong Wang
PURPOSE: Transforming growth factor-β (TGF-β) induction of epithelial-mesenchymal transition (EMT) in SW480 was established as a system for studies of colon cancer metastasis. However, the epigenetic mechanisms underlying this process remain unknown. In mammal, polycomb repressive complex-2 (PRC2) is a highly conserved histone methyltransferase involved in epigenetic regulations. Enhancer of zeste Homolog 2 (EZH2) is the catalytic subunit of PRC2, which catalyzes methylation of lysine 27 of histone H3 (H3K27)...
July 26, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28747380/identification-of-differentially-expressed-splice-variants-by-the-proteogenomic-pipeline-splicify
#2
Malgorzata A Komor, Thang Pham, Annemieke C Hiemstra, Sander R Piersma, Anne S Bolijn, Tim Schelfhorst, Pien M Delis-van Diemen, Marianne Tijssen, Robert P Sebra, Meredith Ashby, Gerrit A Meijer, Connie R Jimenez, Remond J A Fijneman
Proteogenomics, i.e. comprehensive integration of genomics and proteomics data, is a powerful approach identifying novel protein biomarkers. This is especially the case for proteins that differ structurally between disease and control conditions. As tumor development is associated with aberrant splicing, we focus on this rich source of cancer specific biomarkers. To this end, we developed a proteogenomic pipeline, Splicify, which is able to detect differentially expressed protein isoforms. Splicify is based on integrating RNA massive parallel sequencing data and tandem mass spectrometry proteomics data to identify protein isoforms resulting from differential splicing between two conditions...
July 26, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28739727/mir-141-inhibits-proliferation-and-migration-of-colorectal-cancer-sw480-cells
#3
Zhi H Long, Zhi G Bai, Jian N Song, Zhi Zheng, Jun Li, Jun Zhang, Jun Cai, Hong W Yao, Jin Wang, Ying C Yang, Jie Yin, Zhong T Zhang
BACKGROUND: This study was designed to determine the molecular function of miR-141 and the underlying mechanisms in colorectal cancer (CRC). MATERIALS AND METHODS: SW480 cells in which miR-141 was up- or down-regulated were established. Reverse transcription, quantitative polymerase chain reaction and Western blotting were used to examine the microRNA and protein expression. Cell-cycle progression was analyzed by flow cytometry. Proliferation marker Ki-67 was evaluated by immunofluorescence...
August 2017: Anticancer Research
https://www.readbyqxmd.com/read/28738539/lncrna-ab073614-regulates-proliferation-and-metastasis-of-colorectal-cancer-cells-via-the-pi3k-akt-signaling-pathway
#4
Yanan Wang, Haoyu Kuang, Jinfang Xue, Liya Liao, Fang Yin, Xiaojun Zhou
The expression profiles of long noncoding RNAs (lncRNAs) in colorectal cancer (CRC) have remained unclear. LncRNA AB073614 is known to be upregulated in ovarian cancer and glioma tissues, and is associated with the occurrence and progression of those cancers. In the present study, we investigated the lncRNA AB073614 gene expression patterns in CRC cell lines and tissue samples from CRC patients, and then analyzed them for possible associations with various clinicopathological characteristics. Furthermore, the roles played by lncRNA AB073614 in CRC cell proliferation, apoptosis, cell cycle progression, migration, and invasion were examined in vitro by using gene knockdown and overexpression techniques...
July 20, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28731177/co%C3%A2-expression-of-axin-and-apc-gene-fragments-inhibits-colorectal-cancer-cell-growth-via-regulation-of-the-wnt-signaling-pathway
#5
Meili Xu, Xianling Liu, Yan Xu, Shicong Zhu, Yawen Gao
Adenomatous polyposis coli (APC) and Axin interactions serve an important role in colorectal cancer (CRC) pathogenesis. The aim of the present study was to assess the combined effects of Axin and APC co‑expression in CRC cells, and to determine the underlying mechanisms involved. SW480 cells were divided into the following groups: Untransfected (SW480 group), transfected with pEGFP‑N3plus pCS2‑MT (SW480/vector‑vector), transfected with pEGFP‑N3‑APC5 (SW480/APC5), and transfected with pEGFP‑N3‑APC5 pluspCS2‑MT‑Axin (SW480/APC5‑Axin)...
July 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28731151/meg3-is-a-prognostic-factor-for-crc-and-promotes-chemosensitivity-by-enhancing-oxaliplatin-induced-cell-apoptosis
#6
Lixia Li, Jian Shang, Yupeng Zhang, Shi Liu, Yanan Peng, Zhou Zhou, Huaqing Pan, Xiaobing Wang, Lipng Chen, Qiu Zhao
A major reason for the failure of advanced colorectal cancer (CRC) treatment is the occurrence of chemoresistance to oxaliplatin-based chemotherapy. Recently, studies have shown that long non-coding RNAs (lncRNAs) play an important role in drug resistance. Using HiSeq sequencing methods, we identified that lncRNAs show differential expression levels in oxaliplatin-resistant (OxR) and non-resistant CRC patients. RT-qPCR was then performed in tissues and serum samples, and lncRNA MEG3 was verified to be downregulated in non-responding patients and to have considerable discriminating potential to identify responding patients from non-responding patients...
July 17, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28731150/mir%C3%A2-4262-inhibits-colon-cancer-cell-proliferation-via-targeting-of-galnt4
#7
Jian-Jun Qu, Xiang-Yang Qu, De-Zhen Zhou
MicroRNAs (miRs) have been demonstrated to be important in the establishment and progression of colon cancer. However the underlying molecular mechanisms remain to be fully elucidated. Polypeptide N‑acetylgalactosaminyltransferase4 (GALNT4) participates in numerous cellular processes, including tumorigenesis. The present study used reverse transcription‑quantitative polymerase chain reaction and western blotting to investigate the expression levels of miR‑4262 and GALNT4 in tissues and cells. In addition, MTS and colony formation assays, and cell cycle analysis were performed to evaluate the effect of miR‑4262 on cell proliferation and the cell cycle...
July 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28725241/mir-378-suppresses-the-proliferation-migration-and-invasion-of-colon-cancer-cells-by-inhibiting-sdad1
#8
Mingxi Zeng, Linlin Zhu, Liangping Li, Changming Kang
BACKGROUND: MicroRNAs (miRNAs) play important roles in the growth and metastasis of colon cancer. It is known that one set of miRNAs are dysregulated in colon cancer cells, but the mechanism of their role in cancer development is still largely unknown. Our study focuses on the role of miR-378 in colon cancer cells. METHODS: Human colon cancer tissues and adjacent non-tumor tissues were collected from patients diagnosed in pathological examinations. In addition, human colon cancer cell lines LoVo, CaCo2, SW1116, SW480 and HCT-116, and a normal colonic mucosa cell line NCM460 were included...
2017: Cellular & Molecular Biology Letters
https://www.readbyqxmd.com/read/28724995/the-expression-of-formyl-peptide-receptor-1-is-correlated-with-tumor-invasion-of-human-colorectal-cancer
#9
Shu-Qin Li, Ning Su, Ping Gong, Hai-Bo Zhang, Jin Liu, Ding Wang, Yan-Ping Sun, Yan Zhang, Feng Qian, Bo Zhao, Yang Yu, Richard D Ye
Formyl peptide receptors (FPRs) are G protein-coupled chemoattractant receptors expressed mainly in phagocytic leukocytes. High expression of FPRs has also been detected in several cancers but the functions of FPR1 in tumor invasion and metastasis is poorly understood. In this study, we investigated the expression of FPRs in primary human colorectal cancer (CRC) and analyzed the association of FPRs expression with clinicopathological parameters. The levels of FPRs mRNA, especially those of FPR1, were significantly higher in colorectal tumors than in distant normal tissues and adjacent non-tumor tissues...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28713983/malformin%C3%A2-a1-treatment-alters-invasive-and-oncogenic-phenotypes-of-human-colorectal-cancer-cells-through-stimulation-of-the-p38-signaling-pathway
#10
Sun-Young Park, Hyung-Hoon Oh, Young-Lan Park, Hyung-Min Yu, Dae-Seong Myung, Sung-Bum Cho, Wan-Sik Lee, Daeho Park, Young-Eun Joo
Malformin A1 (MA1), a cyclic pentapeptide isolated from Aspergillus niger, has been found to possess a range of bioactive properties including antibacterial activity. However, it is unclear whether MA1 exerts an anticancer effect or not. In this study, we conducted in vitro experiments to investigate its anticancer properties in human colorectal cancer cells. The effect of MA1 on human colorectal cancer cells, SW480 and DKO1, was examined by the WST-1 cell viability assay, inverted microscopy, 5-bromo-2-deoxyuridine (BrdU) incorporation, flow cytometry, DNA fragmentation, wound healing, Transwell assays, and western blotting...
July 10, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28713969/downregulation-of-ptprh-sap-1-in-colorectal-tumors
#11
Mateusz Bujko, Paulina Kober, Małgorzata Statkiewicz, Michal Mikula, Emilia Grecka, Nataliia Rusetska, Marcin Ligaj, Jerzy Ostrowski, Janusz Aleksander Siedlecki
Tyrosine phosphorylation is one of the basic mechanisms for signal transduction in the cell. Receptors exhibiting tyrosine kinase activity are widely involved in carcinogenesis and are negatively regulated by receptor protein tyrosine phosphatases (RPTP). Genes encoding different RPTPs are affected by aberrant epigenetic regulation in cancer. PTPRH (SAP-1) has been previously described to be overexpressed in colorectal cancer (CRC) and classified as an oncogenic factor. Previous microarray-based mRNA expression comparison of colorectal adenomas (AD), CRC and normal mucosa samples (NM) demonstrated that PTPRH tumor expression is the most reduced of all RPTP genes...
July 5, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28711928/dexamethasone-affects-cell-growth-apoptosis-chemosensitivity-of-colon-cancer-via-glucocorticoid-receptor-%C3%AE-nf-%C3%AE%C2%BAb
#12
Jianming He, Jinming Zhou, Weiwen Yang, Qi Zhou, Xi Liang, Xueli Pang, Jianjun Li, Feng Pan, Houjie Liang
Glucocorticoids are effective to treat lymphoma and leukemia. Their effect in colon cancer remains far from clear. Here, we found that glucocorticoid receptor (GR) α protein level was dramatically lower in colon cancer than in lymphoma. Colon cell lines LoVo and HCT116 were GRα-rich and GRα was not detectable in HT29 or SW480. Dexamethasone significantly inhibited cell growth of GRα-rich cell lines and did not significantly affect GRα-negative cell lines. Dexamethasone induced apoptosis and increased chemosensitivity of GRα-rich cell lines...
June 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28711703/novel-4-arylaminoquinazoline-derivatives-with-e-propen-1-yl-moiety-as-potent-egfr-inhibitors-with-enhanced-antiproliferative-activities-against-tumor-cells
#13
Li Chen, Yaling Zhang, Juan Liu, Weijia Wang, Xiabing Li, Lijun Zhao, Wei Wang, Baolin Li
A series of novel 4-anilinoquinazoline derivatives with (E)-propen-1-yl moiety were designed, synthesized and evaluated for biological activities in vitro. Most compounds exhibited highly antiproliferative activities against all tested tumor cell lines including A431, A549, NCI-H1975 and SW480 cells. Especially, compound 6e not only presented strong antiproliferative activities against the tested four tumor cell lines (IC50 of 1.35, 8.83, 5.53 and 6.08 μM, respectively) which expressed wild type or L858R/T790M double mutant epidermal growth factor receptor (EGFR), but also showed potent inhibitory activity against wild type EGFR (IC50 = 20...
June 13, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28710032/microrna-136-inhibits-colon-cancer-cell-proliferation-and-invasion-through-targeting-liver-receptor-homolog-1-wnt-signaling
#14
Qinggong Yuan, Gang Cao, Junhui Li, Yan Zhang, Wenbin Yang
An increasing number of studies have reported that microRNAs (miRNAs) are involved in the malignant behavior of colon cancer cells through directly targeting multiple tumor suppressors or oncogenes. The expression and role of miR-136 has been reported in several types of human cancer. However, the role of miR-136 in colon cancer remains unclear. In this study, we aimed to investigate the expression and function of miR-136 in colon cancer and the potential underlying mechanism. Here, we found that miR-136 was decreased in colon cancer cell lines and tissues...
July 11, 2017: Gene
https://www.readbyqxmd.com/read/28688953/antrodia-camphorata-inhibits-metastasis-and-epithelial-to-mesenchymal-transition-via-the-modulation-of-claudin-1-and-wnt-%C3%AE-catenin-signaling-pathways-in-human-colon-cancer-cells
#15
You-Cheng Hseu, Yu-Hsien Chao, Kai-Yuan Lin, Tzong-Der Way, Hui-Yi Lin, Varadharajan Thiyagarajan, Hsin-Ling Yang
ETHNOPHARMACOLOGICAL RELEVANCE: Antrodia camphorata (AC) is a well known traditional Chinese medicinal mushroom in Taiwan, has been used to treat various diseases including cancer. MATERIALS AND METHODS: In this study, we investigated the anti-metastatic and anti-EMT properties of a fermented culture broth of AC in human colon SW480(claudin-1-) and metastatic SW620(claudin-1+) cancer cells in vitro. RESULTS: AC down-regulates claudin-1 and inhibits the proliferation and colony-formation abilities of both SW620(claudin-1+) and SW480(claudin-1-) cells...
July 5, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28687873/%C3%AE-2-6-linked-sialic-acid-serves-as-a-high-affinity-receptor-for-cancer-oncolytic-virotherapy-with-newcastle-disease-virus
#16
Qian Li, Ding Wei, Fei Feng, Xi-Long Wang, Can Li, Zhi-Nan Chen, Huijie Bian
PURPOSE: Newcastle disease virus (NDV) has been applied to oncolytic virotherapy for decades due to its naturally oncolytic property. In spite of the substantiation of the sialic acid receptors of NDV on host cells, knowledge of preference of sialic acid linkage in viral attachment and oncolytic effect is lacking and imperative to be elucidated. METHODS: Surface plasmon resonance analysis and competitive inhibition with sialylated glycan receptor analogues were used to determine the affinity and the preference of sialic acid receptor...
July 7, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28687332/systemic-analysis-of-different-colorectal-cancer-cell-lines-and-tcga-datasets-identified-igf-1r-egfr-ppar-caspase-axis-as-important-indicator-for-radiotherapy-sensitivity
#17
Lin Chen, Zhe Zhu, Wei Gao, Qixin Jiang, Jiangming Yu, Chuangang Fu
Insulin-like growth factor 1 receptor (IGF-1R) is proved to contribute the development of many types of cancers. But, little is known about its roles in radio-resistance of colorectal cancer (CRC). Here, we demonstrated that low IGF-1R expression value was associated with the better radiotherapy sensitivity of CRC. Besides, through Quantitative Real-time PCR (qRT-PCR), the elevated expression value of epidermal growth factor receptor (EGFR) was observed in CRC cell lines (HT29, RKO) with high radio-sensitivity compared with those with low sensitivity (SW480, LOVO)...
July 4, 2017: Gene
https://www.readbyqxmd.com/read/28686900/bioactive-polyketides-and-8-14-seco-ergosterol-from-fruiting-bodies-of-the-ascomycete-daldinia-childiae
#18
Zhen-Zhu Zhao, He-Ping Chen, Ying Huang, Shuai-Bing Zhang, Zheng-Hui Li, Tao Feng, Ji-Kai Liu
Seven previously undescribed polyketides, namely childinins A-G, and one previously undescribed 8,14-seco-ergosterol, namely childinasterone A, were obtained from the fruiting bodies of Daldinia childiae. Their structures and absolute configurations were established via extensive spectroscopic analyses, single-crystal X-ray diffraction, and TDDFT/ECD calculations. Childinins A represents the first example of natural product possessing a previously undescribed 6H-naphtho[2,1-c]chromen-6-one scaffold. The single crystal X-ray diffraction of childinasterone A unambiguously determined the absolute configuration of a 8,14-seco-ergosterol skeleton...
July 4, 2017: Phytochemistry
https://www.readbyqxmd.com/read/28685059/downregulating-forkhead-box-m1-inhibits-proliferation-by-inhibiting-autophagy-in-the-sw480-cell-line
#19
Shibiao Zhong, Aiyan Zhou, Fanghua Qi, Zhen Li, Zeyan Yu, Yongchao Lu, Xudong Liu
Forkhead Box M1 (FoxM1) is one of the most important oncogenes, and overexpression of FoxM1 has been reported in many cancers, including colon cancer. In the present study, the authors attempted to reveal the mechanism underlying its effects on proliferation through autophagy in the sw480 cell line. FoxM1 is knocked down through short hairpin (sh)RNA in the sw480 cell line. A series of experiments were conducted to examine it function on proliferation and LC3 and P62 were used to measure level of autophagy...
July 2017: Biomedical Reports
https://www.readbyqxmd.com/read/28684297/curcumol-induces-cell-cycle-arrest-in-colon-cancer-cells-via-reactive-oxygen-species-and-akt-gsk3%C3%AE-cyclin-d1-pathway
#20
Juan Wang, Xu-Mei Li, Zhun Bai, Bi-Xia Chi, Yan Wei, Xu Chen
ETHNOPHARMACOLOGICAL RELEVANCE: Curcuma kwangsiensis S. G. Lee & C. F. Liang (Guangxi ezhu, in Chinese) belongs to the Zingiberaceae family, has been used as a traditionally Chinese medicine nearly 2,000 year. Curcumol is one of the guaiane-type sesquiterpenoid hemiketal isolated from medicine plant Curcuma kwangsiensis S. G. Lee & C. F. Liang, which has been reported possesses anti-cancer effects. Our previous study found that the most contribution to inhibit nasopharyngeal carcinoma cell growth was curcumol...
July 3, 2017: Journal of Ethnopharmacology
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