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https://www.readbyqxmd.com/read/28944853/kisspeptin-inhibits-cancer-growth-and-metastasis-via-activation-of-eif2ak2
#1
Tae-Hun Kim, Sung-Gook Cho
Kisspeptin is a protein encoded by the KISS1 gene, which has been reported to suppress the metastatic capabilities of various types of cancer cells, through the activation of its G‑protein coupled receptor GPR54. However, the molecular mechanisms underlying the involvement of kisspeptin‑mediated signaling in the inhibition of cancer cell migration and invasion have yet to be elucidated. The present in vitro cell proliferation, migration and invasion assays and in vivo experimental metastasis studies demonstrated that kisspeptin‑induced eukaryotic translation initiation factor 2α kinase 2 (EIF2AK2) activation suppressed the metastatic capabilities of several types of cancer cells...
September 21, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28944846/hedyotis-diffusa-willd-suppresses-metastasis-in-5%C3%A2-fluorouracil%C3%A2-resistant-colorectal-cancer-cells-by-regulating-the-tgf%C3%A2-%C3%AE-signaling-pathway
#2
Zijun Lai, Zhaokun Yan, Wujin Chen, Jun Peng, Jianyu Feng, Qiongyu Li, Yiyi Jin, Jiumao Lin
Colorectal cancer (CRC) is one of the most common malignant tumors of the digestive tract, and threatens the survival and health of patients with CRC. Chemotherapy remains one of the main therapeutic approaches for patients with CRC; however, drug resistance limits the long‑term use. CRC cells with multi‑drug resistance (MDR) exhibit increased survival times and metastatic potential, which may lead to the recurrence and metastasis of CRC. In addition, MDR is one of the major causes of chemotherapy failure in clinical treatment...
September 18, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28944331/assessment-of-the-relationship-between-neutrophil-lymphocyte-ratio-and-prognostic-factors-in-non-metastatic-colorectal-cancer
#3
Ersin Borazan, Ahmet Abdulhalik Balık, Zehra Bozdağ, Muhammed Kasım Arık, Alper Aytekin, Latif Yılmaz, Muhsin Elçi, İlyas Başkonuş
OBJECTIVE: Neutrophil-lymphocyte ratio still has a limited clinical use due to many non-cancer factors affecting neutrophils or lymphocytes in the present time. We aimed to evaluate the association between preoperative neutrophil-lymphocyte ratio and poor prognostic factors after curative elective colorectal surgery. MATERIAL AND METHODS: This clinical retrospective study was initiated with 95 patients, who had a curative surgical resection between 2003 and 2013...
2017: Turk J Surg
https://www.readbyqxmd.com/read/28942867/first-line-treatment-in-metastatic-colorectal-cancer-important%C3%A2-or-crucial
#4
EDITORIAL
David Malka, Federico Rotolo, Valérie Boige
No abstract text is available yet for this article.
October 2017: European Journal of Cancer
https://www.readbyqxmd.com/read/28942013/major-challenges-related-to-tumor-biological-characteristics-in-accurate-mutation-detection-of-colorectal-cancer-by-next-generation-sequencing
#5
Weihua Li, Tian Qiu, Lei Guo, Jianming Ying
Next-generation sequencing (NGS) has been used in mutation detection of colorectal cancer (CRC). We here interrogated 747 CRC samples to detect mutations in 22 cancer-related genes by using NGS, and to explore some key challenges related to tumor biology. RAS mutations (KRAS or NRAS mutations), RAS/BRAF/PIK3CA mutations (mutations in KRAS, NRAS, BRAF or PIK3CA) and mutation burden (mutations in any of the 22 detected genes) were observed in 53.0% (396/747), 57.1% (431/747) and 84.2% (629/747) of specimens, respectively...
September 20, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28939741/tumor-heterogeneity-predicts-metastatic-potential-in-colorectal-cancer
#6
Je-Gun Joung, Bo Young Oh, Hye Kyung Hong, Hisham AlKhalidi, Faisal Al-Alem, Hae-Ock Lee, Joon Seol Bae, Jinho Kim, Hong-Ui Cha, Maram Alotaibi, Yong Beom Cho, Mazen Hassanain, Woo Yong Lee, Woong-Yang Park
PURPOSE: Tumors continuously evolve to maintain growth; secondary mutations facilitate this process, resulting in high tumor heterogeneity. In this study, we compared mutations in paired primary and metastatic colorectal cancer (CRC) tumor samples to determine whether tumor heterogeneity can predict tumor metastasis. EXPERIMENTAL DESIGN: Somatic variations in 46 pairs of matched primary-liver metastatic tumors and 42 primary tumors without metastasis were analyzed by whole exome sequencing...
September 22, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28938618/beclin-1-and-lc3-as-predictive-biomarkers-for-metastatic-colorectal-carcinoma
#7
Hong Zhao, Maopeng Yang, Bin Zhao
Autophagy is a highly conserved self-destructive process that disassembles dysfunctional or unnecessary cellular components. It plays an important role in cancer metastasis, which is of particular interest considering metastatic disease is the major cause of colorectal carcinoma (CRC) related mortality. Here, we investigated the immunohistochemical expression of autophagy-related protein Beclin 1 and Microtubule-associated protein 1A/1B-light chain 3 (LC3) within surgical CRC specimens, first in a training cohort (205 patients), then in an inner validation cohort (160 patients) and an independent cohort (161 patients)...
August 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/28936923/egfr-pathway-subgroups-in-chilean-colorectal-cancer-patients-detected-by-mutational-and-expression-profiles-associated-to-different-clinicopathological-features
#8
Karin Alvarez, Paulina Orellana, Cynthia Villarroel, Luis Contreras, Hiroshi Kawachi, Maki Kobayashi, Ana Maria Wielandt, Marjorie De la Fuente, Juan Carlos Triviño, Udo Kronberg, Pilar Carvallo, Francisco López-Köstner
Colorectal cancer is a multistep process affecting several signaling pathways including EGFR (epidermal growth factor receptor), a therapeutic target for metastatic disease. Our aim was to characterize the mutational and expression profiles of the EGFR pathway in colorectal tumors and to integrate these results according to five previously defined groups. We screened seven genes for mutations ( KRAS-BRAF-PIK3CA-PIK3R1-AKT1-MAP2K1-PTEN) and six proteins (EGFR-p110α-p85α-PTEN-phosphoAKT-phosphoMEK1) by immunohistochemistry, PTEN deletion, and MSI...
September 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28932083/integrating-tyms-kras-and-braf-testing-in-patients-with-metastatic-colorectal-cancer
#9
Anastasios Ntavatzikos, Aris Spathis, Paul Patapis, Nikolaos Machairas, George Peros, Stefanos Konstantoudakis, Danai Leventakou, Ioannis G Panayiotides, Petros Karakitsos, Anna Koumarianou
AIM: To investigate the impact of thymidylate synthase (TYMS), KRAS and BRAF in the survival of metastatic colorectal cancer (mCRC) patients treated with chemotherapy. METHODS: Clinical data were collected retrospectively from records of consecutive patients with mCRC treated with fluoropyrimidine-based chemotherapy from 1/2005 to 1/2007. Formalin-fixed paraffin-embedded tissues were retrieved for analysis. TYMS genotypes were identified with restriction fragment analysis PCR, while KRAS and BRAF mutation status was evaluated using real-time PCR assays...
August 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28931291/-malignant-tumors-of-the-small-bowel
#10
L Němec, P Fabian, J Tomášek, J Jarkovský, R Šefr, L Fiala
INTRODUCTION: Malignant tumors of the small bowel are relatively uncommon neoplasms; their incidence is around 1.5 per 100,000 inhabitants in the Czech Republic. METHOD: 104 patients underwent a resection of the small bowel because of a primary or secondary tumor over the 10-year period between 20062015 at the Masaryk Memorial Cancer Institute. Data from these patients was reviewed retrospectively. Survival rates were analyzed using the Kaplan-Meier method. RESULTS: We observed 45 primary and 59 secondary tumors...
2017: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/28931069/methylation-associated-transcriptional-repression-of-elovl5-in-novel-colorectal-cancer-cell-lines
#11
Arnoud Boot, Jan Oosting, Jaap D H van Eendenburg, Peter J K Kuppen, Hans Morreau, Tom van Wezel
Genetic and epigenetic alterations mark colorectal cancer (CRC). Global hypomethylation is observed in nearly all CRC, but a distinct subset of CRC show the CpG Island Methylator Phenotype (CIMP). These tumors show DNA hypermethylation of a specific subset of CpG islands, resulting in transcriptional downregulation of nearby genes. Recently we reported the establishment of novel CRC cell lines derived from primary and metastatic CRC tissues. In this study we describe the DNA methylation profiling of these low passage CRC cell lines...
2017: PloS One
https://www.readbyqxmd.com/read/28930817/cronkhite-canada-syndrome-associated-with-colon-cancer-metastatic-to-liver-a-case-report
#12
Jing Wang, Lei Zhao, Nina Ma, Juanjuan Che, Huihui Li, Bangwei Cao
RATIONALE: Cronkhite-Canada Syndrome (CCS) is an idiopathic, nonhereditary syndrome haracterized by gastrointestinal (GI) polyposis and ectodermal changes including alopecia, onychatrophia, and pigmentation. CCS colon polyps were previously considered to be benign neoplasms. However, serrated adenoma was reported to be associated with malignant neoplasms in some cases of gastric and colorectal carcinomas, and esophageal cancers. Although malignant colon and gastric cancer have been reported in CCS, reports of distant metastasis have been rare in CCS...
September 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28929277/fluorescence-guided-surgery-in-the-combined-treatment-of-peritoneal-carcinomatosis-from-colorectal-cancer-preliminary-results-and-considerations
#13
Eva Lieto, Annamaria Auricchio, Francesca Cardella, Andrea Mabilia, Nicoletta Basile, Paolo Castellano, Michele Orditura, Gennaro Galizia
BACKGROUND: Indocyanine green (ICG) is a near-infrared fluorescent contrast agent, which preferentially accumulates in cancer tissue. The aim of our study was to investigate the role of fluorescence imaging (FI) with ICG (ICG-FI) for detecting peritoneal carcinomatosis (PC) from colorectal cancer (CRC). METHODS: Four CRC patients with PC scheduled for cytoreductive surgery + hyperthermic intraperitoneal chemotherapy were enrolled in this prospective study. At a median time of 50 min after 0...
September 19, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28928870/the-impact-of-microsatellite-instability-status-and-sidedness-of-the-primary-tumor-on-the-effect-of-cetuximab-containing-chemotherapy-in-patients-with-metastatic-colorectal-cancer
#14
Seung Tae Kim, Su-Jin Lee, Jeeyun Lee, Se Hoon Park, Joon Oh Park, Ho Yeong Lim, Won Ki Kang, Young Suk Park
Background: Colorectal cancer (CRC) has been reconsidered as a heterogeneous disease. Among advances of genomic analysis in CRC, the sidedness of tumors (left-sided colon vs. right-sided colon) and microsatellite instability (MSI)-high (H) tumors have been highlighted. Methods: We analyzed 153 CRC patients who were available for evaluation of MSI status and had been treated with cetuximab-containing chemotherapy between April 2008 and January 2013. KRAS mutational status was available in all 153 patients, but BRAF mutational status was only available in 72 patients (47...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/28928816/analysis-of-long-non-coding-rna-expression-profiles-in-clear-cell-renal-cell-carcinoma
#15
Fei Yan Yang, Yan Wang, Jian Guo Wu, Shao Li Song, Gang Huang, Wei Min Xi, Li Ling Tan, Jian Wang, Qing Cao
To investigate the expression patterns of long non-coding RNAs (lncRNAs) in clear cell renal cell carcinoma (ccRCC) and in metastatic renal cell carcinoma (RCC), the present study downloaded three human exon arrays available from the public Gene Expression Omnibus. The probes of the human exon arrays were re-annotated and the probes uniquely mapping to lncRNAs were retained at the gene level. Following the analysis of GSE53757 and GSE46699, which contained paired ccRCC cancer and normal adjacent tissue samples, 32 differentially expressed lncRNAs (adjusted P<0...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927777/the-role-of-cetuximab-in-converting-initially-unresectable-colorectal-cancer-liver-metastases-for-resection
#16
REVIEW
G Poston, R Adam, J Xu, B Byrne, R Esser, H Malik, H Wasan, J Xu
In patients with metastatic colorectal cancer (mCRC) predominantly confined to the liver, whether a patient undergoes potentially curative resection of the liver lesions is a well-established principal determinant of long-term survival. There are a number of different agents, both chemotherapeutic and targeted biologic agents, which can aid in shrinking liver tumors, which would have otherwise been unresectable, allowing for potentially curative resection. The aim of this review article is to summarize the available evidence regarding optimal therapeutic strategies for converting initially unresectable metastases for potentially curative resection; we do not discuss patients who present with initially resectable disease...
August 10, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28927434/sifit-inferring-tumor-trees-from-single-cell-sequencing-data-under-finite-sites-models
#17
Hamim Zafar, Anthony Tzen, Nicholas Navin, Ken Chen, Luay Nakhleh
Single-cell sequencing enables the inference of tumor phylogenies that provide insights on intra-tumor heterogeneity and evolutionary trajectories. Recently introduced methods perform this task under the infinite-sites assumption, violations of which, due to chromosomal deletions and loss of heterozygosity, necessitate the development of inference methods that utilize finite-sites models. We propose a statistical inference method for tumor phylogenies from noisy single-cell sequencing data under a finite-sites model...
September 19, 2017: Genome Biology
https://www.readbyqxmd.com/read/28927133/benefit-of-rebiopsy-for-deciding-treatment-strategy-in-rectal-cancer-a-case-report
#18
Kenta Kawasaki, Yasuo Hamamoto, Takeshi Suzuki, Kenro Hirata, Yasutaka Sukawa, Akiyoshi Kasuga, Yuichiro Hayashi, Hiromasa Takaishi, Kaori Kameyama, Takanori Kanai
Rebiopsy is considered an option for specific types of cancer, such as breast, non-small cell lung, and prostate cancer, in clinical trials and in practice. The benefit of rebiopsy comes from the selection of a new treatment strategy based on the genetic profile of the cells, which may reflect the development of drug resistance or hormonal changes. For colorectal cancer, the presence of different genomic mutations between the primary tumor and its metastases is rare, and rebiopsy is therefore not generally performed...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28927129/deficiency-of-gap-junction-composed-of-connexin43-contributes-to-oxaliplatin-resistance-in-colon-cancer-cells
#19
Min Su, Qi Zhang
Although comprehensive strategies in the treatment of colorectal cancer have been developed for a number of years, the five-year survival rate of metastatic colon cancer remains less than 10%. Oxaliplatin, a commonly used chemotherapeutic agent for metastatic colon cancer, improves the response rate of patients and prolongs patients' progression-free survival. However, the generation of resistance limits the clinical application of oxaliplatin, and the mechanisms of this remain unclear. The present study mainly investigated the effect of the gap junction (GJ) composed of connexin43 (Cx43) on oxaliplatin cytotoxicity in colon cancer cells...
September 2017: Oncology Letters
https://www.readbyqxmd.com/read/28925914/impact-of-travel-distance-on-access-to-treatment-and-survival-in-patients-with-metastatic-colorectal-cancer-prescribed-bevacizumab-plus-chemotherapy
#20
Evan Payette, Sabuj Sarker, Haji Chalchal
INTRODUCTION: Given Saskatchewan's size and low population density outside of city centres, many rural and remote residents have issues accessing regional oncology services. We performed a study to determine whether travel distance to cancer treatment centres affects first-line treatment accessibility and survival in patients with metastatic colorectal adenocarcinoma. METHODS: Retrospective chart review of patients with stage IV metastatic colorectal adenocarcinoma collected by the Saskatchewan Cancer Agency registry between June 1, 2009, and June 30, 2013...
2017: Canadian Journal of Rural Medicine
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