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https://www.readbyqxmd.com/read/28528497/microrna-30a-5p-mir-30a-regulates-cell-motility-and-emt-by-directly-targeting-oncogenic-tm4sf1-in-colorectal-cancer
#1
Y R Park, S L Kim, M R Lee, S Y Seo, J H Lee, S H Kim, I H Kim, S O Lee, S T Lee, Sang Wook Kim
PURPOSE: Colorectal cancer (CRC) is one of the leading causes of cancer death worldwide, and many oncogenes and tumor suppressor genes are involved in CRC. MicroRNAs (miRNAs) are small non-coding RNAs that can negatively regulate gene expression. Previous studies have revealed that miRNAs regulate the development and progression of many cancers. In this study, we investigated the role of microRNA-30a-5p (miR-30a) in CRC and its unknown mechanisms. METHODS: qRT-PCR was used to detect miR-30a and TM4SF1 mRNA expression in CRC specimens and cell lines...
May 20, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28527628/multidisciplinary-clinics-for-colorectal-cancer-care-reduces-treatment-time
#2
Vanessa N Kozak, Alok A Khorana, Sudha Amarnath, Katherine E Glass, Matthew F Kalady
INTRODUCTION: Management of locally advanced and metastatic colorectal cancer (CRC) requires the expertise of multiple specialists. Multidisciplinary clinics (MDCs) are a working model designed to facilitate delivery of coordinated care. The present study evaluated the effects of MDC on the time to treatment (TTT). PATIENTS AND METHODS: Patients with CRC or locally advanced anal cancer who were evaluated at a single-institution MDC from January 2014 to October 2015 were identified from an institutional registry...
April 19, 2017: Clinical Colorectal Cancer
https://www.readbyqxmd.com/read/28524162/targeted-sequencing-based-analyses-of-candidate-gene-variants-in-ulcerative-colitis-associated-colorectal-neoplasia
#3
Sanjiban Chakrabarty, Vinay Koshy Varghese, Pranoy Sahu, Pradyumna Jayaram, Bhadravathi M Shivakumar, Cannanore Ganesh Pai, Kapaettu Satyamoorthy
BACKGROUND: Long-standing ulcerative colitis (UC) leading to colorectal cancer (CRC) is one of the most serious and life-threatening consequences acknowledged globally. Ulcerative colitis-associated colorectal carcinogenesis showed distinct molecular alterations when compared with sporadic colorectal carcinoma. METHODS: Targeted sequencing of 409 genes in tissue samples of 18 long-standing UC subjects at high risk of colorectal carcinoma (UCHR) was performed to identify somatic driver mutations, which may be involved in the molecular changes during the transformation of non-dysplastic mucosa to high-grade dysplasia...
May 18, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28524155/statin-use-candidate-mevalonate-pathway-biomarkers-and-colon-cancer-survival-in-a-population-based-cohort-study
#4
Ronan T Gray, Maurice B Loughrey, Peter Bankhead, Chris R Cardwell, Stephen McQuaid, Roisin F O'Neill, Kenneth Arthur, Victoria Bingham, Claire McGready, Anna T Gavin, Jacqueline A James, Peter W Hamilton, Manuel Salto-Tellez, Liam J Murray, Helen G Coleman
BACKGROUND: Statin use after colorectal cancer diagnosis may improve survival but evidence from observational studies is conflicting. The anti-cancer effect of statins may be restricted to certain molecular subgroups. In this population-based cohort study, the interaction between p53 and 3-hydroxy-3-methylglutaryl coenzyme-A reductase (HMGCR) expression, KRAS mutations, and the association between statin use and colon cancer survival was assessed. METHODS: The cohort consisted of 740 stage II and III colon cancer patients diagnosed between 2004 and 2008...
May 18, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28522950/red-flag-symptoms-detailed-account-of-clinicopathological-features-in-young-onset-colorectal-cancer
#5
Ramish Riaz, Nosheen Masood, Arfa Benish
BACKGROUND/AIMS: Colorectal cancer has long been considered disease of the West, typically occurring in old age; however, the incidence is rising in Asia. The pattern of disease is quite different in Asia, occurring at a younger age and at an advanced stage. Recognition of disease at an early stage is still a challenge for physicians. Few data are available regarding young-onset colorectal cancer in Pakistan. We conducted this study to fill this gap and provide deeper insight into clinical symptoms and histopathological features of young-onset colorectal cancer...
April 2017: Intestinal Research
https://www.readbyqxmd.com/read/28522907/droplet-digital-pcr-for-quantification-of-itga6-in-a-stool-mrna-assay-for-the-detection-of-colorectal-cancers
#6
Elizabeth Herring, Shigeru Kanaoka, Éric Tremblay, Jean-François Beaulieu
AIM: To investigate the use of droplet digital polymerase chain reaction (ddPCR) for detecting host mRNA markers in stools as a non-invasive test for colorectal cancer screening. METHODS: ddPCR and quantitative PCR were compared side by side for their performance in the detection of ITGA6 and ITGA6A transcripts in stool samples obtained from patients with various types of colorectal lesions (advanced adenomas and stage II-IV colorectal cancers) and control (patients displaying no pathological findings) using duplex TaqMan reactions for both methods...
April 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28521746/survival-rates-and-predictors-of-survival-among-colorectal-cancer-patients-in-a-malaysian-tertiary-hospital
#7
Bello Arkilla Magaji, Foong Ming Moy, April Camilla Roslani, Chee Wei Law
BACKGROUND: Colorectal cancer is the third most commonly diagnosed malignancy and the fourth leading cause of cancer-related death globally. It is the second most common cancer among both males and females in Malaysia. The economic burden of colorectal cancer is likely to increase over time owing to its current trend and aging population. Cancer survival analysis is an essential indicator for early detection and improvement in cancer treatment. However, there was a scarcity of studies concerning survival of colorectal cancer patients as well as its predictors...
May 18, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28521443/loss-of-fas-expression-and-high-expression-of-hla-e-promoting-the-immune-escape-of-early-colorectal-cancer-cells
#8
Renxiang Huang, Dongyang Zhang, Feng Li, Zili Xiao, Meiling Wu, Dongyun Shi, Ping Xiang, Zhijun Bao
Previous studies have investigated the mechanisms of immune evasion of tumor cells in numerous types of advanced solid malignant tumor, and several types of immune preparations have been administered as antitumor adjuvant therapies. However, in the majority of studies, the efficacy of therapies has been revealed to be limited. The present study aimed to investigate the immune evasion mechanisms employed by early colorectal cancer cells and the expression of the molecules associated with immune evasion during the malignant transformation process of normal colorectal epithelial cells to measure the effects of immune intervention for early colorectal cancer, and to improve the efficacy of immunotherapy...
May 2017: Oncology Letters
https://www.readbyqxmd.com/read/28521288/hypermethylation-of-ndn-promotes-cell-proliferation-by-activating-the-wnt-signaling-pathway-in-colorectal-cancer
#9
Yu-Han Hu, Qing Chen, Yan-Xia Lu, Jian-Ming Zhang, Chun Lin, Fan Zhang, Wen-Juan Zhang, Xiao-Min Li, Wei Zhang, Xue-Nong Li
The progression of CRC is a multistep process involving several genetic changes or epigenetic modifications. NDN is a member of the MAGE family, encoding a protein that generally suppresses cell proliferation and acting as a transcriptional repressor. Immunohistochemical staining revealed that the expression of NDN was significantly down-regulated in CRC tissues compared with normal tissues and the down-regulation of NDN in CRC could reflect the hypermethylation of the NDN promoter. Treatment of the CRC cell line SW480 with the demethylating agent 5-Aza-CdR restored the NDN expression level...
May 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28517961/overcoming-chemoresistance-in-cancer-stem-cells-with-the-help-of-micrornas-in-colorectal-cancer
#10
Andrew Fesler, Shixiang Guo, Hua Liu, Ning Wu, Jingfang Ju
It has been recognized that acute resistance to chemotherapy mediated by post-transcriptional and translational control is crucial to influence response and survival in cancer treatment. Tumor cells are highly heterogeneous and have the ability to adapt a resistance phenotype through epigenetic regulations such as microRNAs. This poses a major challenge to the treatment of advanced stage colon cancer patients. Colon cancer stem cells have been identified as one of the major contributors to resistance of colon cancer to chemotherapy...
May 18, 2017: Epigenomics
https://www.readbyqxmd.com/read/28515943/evaluation-of-dosing-strategy-for-pembrolizumab-for-oncology-indications
#11
Tomoko Freshwater, Anna Kondic, Malidi Ahamadi, Claire H Li, Rik de Greef, Dinesh de Alwis, Julie A Stone
BACKGROUND: Traditionally, most monoclonal antibodies (mAbs) have been dosed based on body weight because of perceived contribution of body size in pharmacokinetic variability. The same approach was used in the initial pembrolizumab studies; however, following availability of PK data, the need for weight-based dosing for pembrolizumab was reassessed. METHODS: A previously established population PK (popPK) model as well as exposure-response results from patients with advanced melanoma or non-small cell lung cancer (NSCLC) were used to evaluate the potential application of a fixed dosing regimen with the aim of maintaining pembrolizumab exposures within the range demonstrated to provide near maximal efficacy and acceptable safety...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28515452/trends-and-outcomes-of-surgical-treatment-for-colorectal-cancer-between-2004-and-2012-an-analysis-using-national-inpatient-database
#12
Meng-Tse Gabriel Lee, Chong-Chi Chiu, Chia-Chun Wang, Chia-Na Chang, Shih-Hao Lee, Matthew Lee, Tzu-Chun Hsu, Chien-Chang Lee
Limited data are available for the epidemiology and outcome of colorectal cancer in relation to the three main surgical treatment modalities (open, laparoscopic and robotic). Using the US National Inpatient Sample database from 2004 to 2012, we identified 1,265,684 hospitalized colorectal cancer patients. Over the 9 year period, there was a 13.5% decrease in the number of hospital admissions and a 43.5% decrease in in-hospital mortality. Comparing the trend of surgical modalities, there was a 35.4% decrease in open surgeries, a 3...
May 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28515248/systemic-management-of-colorectal-cancer
#13
Wells A Messersmith
Advances have been made in the systemic treatment of colorectal cancer, with approximately 12 chemotherapy or biologic agents approved for use as a single agent or in a combination. However, numerous gaps in our understanding of the disease remain, such as the lack of benefit with biologics in the adjuvant setting, the absence of biomarkers for most systemic therapies, and the reason why left-sided and right-sided tumors behave differently. At the 22nd NCCN Annual Conference, Dr. Wells A. Messersmith presented several impactful updates to the 2017 NCCN Clinical Practice Guidelines in Oncology for Colon Cancer and reviewed the outcomes with a host of therapies used for both early-stage and metastatic disease...
May 2017: Journal of the National Comprehensive Cancer Network: JNCCN
https://www.readbyqxmd.com/read/28510612/suppression-of-id1-expression-in-colon-cancer-cells-increases-sensitivity-to-5-fluorouracil
#14
Tomasz Przybyła, Monika Sakowicz-Burkiewicz, Izabela Maciejewska, Hanna Bielarczyk, Tadeusz Pawełczyk
Adjuvant chemotherapy with 5-fluorouracil remains the basic treatment for patients with advanced colorectal carcinoma. The major obstacle in successful treatment is the ability of CRC cells to acquire chemoresistance. Here we examined the impact of ID1 silencing on the sensitivity of CRC cells to 5-FU. To suppress ID1 expression in HT-29 and HCT-116 cells the cells were transduced with a lentiviral vector carrying the ID1 silencing sequence. Cells with silenced ID1 showed altered expression of epithelial and mesenchymal markers and exhibited increased proliferation rate compared to the parental cells...
May 17, 2017: Acta Biochimica Polonica
https://www.readbyqxmd.com/read/28508838/randomized-controlled-phase-iii-study-comparing-hepatic-arterial-infusion-with-systemic-chemotherapy-after-curative-resection-for-liver-metastasis-of-colorectal-carcinoma-jfmc-29-0003
#15
Mitsuo Kusano, Michitaka Honda, Koji Okabayashi, Koho Akimaru, Syuichi Kino, Yasushige Tsuji, Masashi Watanabe, Satoshi Suzuki, Takaki Yoshikawa, Junichi Sakamoto, Koji Oba, Shigetoyo Saji
BACKGROUND: The feasibility and efficacy of adjuvant hepatic arterial infusion (HAI) in preventing the development of liver metastases in patients with advanced colon carcinoma have not been validated. The aim of this randomized controlled study was to compare the feasibility of HAI and the protective effect against liver metastasis after curative resection to those of systemic chemotherapy. METHODS: Between July 2000 and June 2003, 91 patients were enrolled. Patients were randomly assigned to receive 5-fluorouracil (5-FU) via continuous venous infusion (CVI) or intra-hepatic arterial weekly high-dose 5-FU (WHF)...
January 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28507758/fecal-immunochemical-test-based-colorectal-cancer-screening-the-gender-dilemma
#16
Esmée J Grobbee, Els Wieten, Bettina E Hansen, Esther M Stoop, Thomas R de Wijkerslooth, Iris Lansdorp-Vogelaar, Patrick M Bossuyt, Evelien Dekker, Ernst J Kuipers, Manon Cw Spaander
BACKGROUND: Despite differences between men and women in incidence of colorectal cancer (CRC) and its precursors, screening programs consistently use the same strategy for both genders. OBJECTIVE: The objective of this article is to illustrate the effects of gender-tailored screening, including the effects on miss rates of advanced neoplasia (AN). METHODS: Participants (age 50-75 years) in a colonoscopy screening program were asked to complete a fecal immunochemical test (FIT) before colonoscopy...
April 2017: United European Gastroenterology Journal
https://www.readbyqxmd.com/read/28504856/cell-free-dna-copy-number-variations-in-plasma-from-colorectal-cancer-patients
#17
Jian Li, Rachel L Dittmar, Shu Xia, Huijuan Zhang, Meijun Du, Chiang-Ching Huang, Brooke R Druliner, Lisa Boardman, Liang Wang
To evaluate clinical utility of cell free DNA (cfDNA), we performed whole genome sequencing to systematically examine plasma cfDNA copy number variations (CNVs) in a cohort of patients with colorectal cancer (CRC, n=80), polyps (n=20) and healthy controls (n=35). We initiallycompared cfDNA yield in 20 paired serum-plasma samples and observed significantly higher cfDNA concentration in serum (median=81.20ng, range 7.18-500ng/ml) than in plasma (median=5.09ng, range 3.76-62.8ng/ml) (p<0.0001). However, tumor-derived cfDNA content was significantly lower in serum than in matched plasma samples tested...
May 15, 2017: Molecular Oncology
https://www.readbyqxmd.com/read/28504713/elevated-pttg-and-pbf-predicts-poor-patient-outcome-and-modulates-dna-damage-response-genes-in-thyroid-cancer
#18
M L Read, J C Fong, B Modasia, A Fletcher, W Imruetaicharoenchoke, R J Thompson, H Nieto, J J Reynolds, A Bacon, U Mallick, A Hackshaw, J C Watkinson, K Boelaert, A S Turnell, V E Smith, C J McCabe
The proto-oncogene PTTG and its binding partner PBF have been widely studied in multiple cancer types, particularly thyroid and colorectal, but their combined role in tumourigenesis is uncharacterised. Here, we show for the first time that together PTTG and PBF significantly modulate DNA damage response (DDR) genes, including p53 target genes, required to maintain genomic integrity in thyroid cells. Critically, DDR genes were extensively repressed in primary thyrocytes from a bitransgenic murine model (Bi-Tg) of thyroid-specific PBF and PTTG overexpression...
May 15, 2017: Oncogene
https://www.readbyqxmd.com/read/28503955/new-insights-into-the-earliest-stages-of-colorectal-tumorigenesis
#19
Chelsie K Sievers, William M Grady, Richard B Halberg, Perry J Pickhardt
Tumors in the large intestine have been postulated to arise via a stepwise accumulation of mutations, a process that takes up to 20 years. Recent advances in lineage tracing and DNA sequencing, however, are revealing new evolutionary models that better explain the vast amount of heterogeneity observed within and across colorectal tumors. Areas Covered: A review of the literature supporting a novel model of colorectal tumor evolution was conducted. The following commentary examines the basic science and clinical evidence supporting a modified view of tumor initiation and progression in the colon...
May 15, 2017: Expert Review of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28501704/genetic-variation-in-slc7a2-interacts-with-calcium-and-magnesium-intakes-in-modulating-the-risk-of-colorectal-polyps
#20
Pin Sun, Xiangzhu Zhu, Martha J Shrubsole, Reid M Ness, Elizabeth A Hibler, Qiuyin Cai, Jirong Long, Zhi Chen, Guoliang Li, Lifang Hou, Walter E Smalley, Todd L Edwards, Edward Giovannucci, Wei Zheng, Qi Dai
Solute carrier family 7, member 2 (SLC7A2) gene encodes a protein called cationic amino acid transporter 2, which mediates the transport of arginine, lysine and ornithine. l-Arginine is necessary for cancer development and progression, including an important role in colorectal cancer pathogenesis. Furthermore, previous studies found that both calcium and magnesium inhibit the transport of arginine. Thus, calcium, magnesium or calcium:magnesium intake ratio may interact with polymorphisms in the SLC7A2 gene in association with colorectal cancer...
May 5, 2017: Journal of Nutritional Biochemistry
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