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Total 78 results found since Jan 2013.

DCLK1 Inhibition Sensitizes Colorectal Cancer Cells to Radiation Treatment
Int J Mol Cell Med. 2021 Winter;10(1):23-33. doi: 10.22088/IJMCM.BUMS.10.1.23. Epub 2021 May 22.ABSTRACTColorectal cancer (CRC) is one of the most prevalent diagnosed cancers and a common cause of cancer-related mortality. Despite effective clinical responses, a large proportion of patients undergo resistance to radiation therapy. Therefore, the identification of efficient targeted therapy strategies would be beneficial to overcome cancer radioresistance. Doublecortin-like kinase 1 (DCLK1) is an intestinal and pancreatic stem cell marker that showed overexpression in a variety of cancers. The transfection of DCLK1 siRNA to...
Source: Molecular Medicine - July 16, 2021 Category: Molecular Biology Authors: Chiman Mohammadi Ali Mahdavinezhad Massoud Saidijam Fatemeh Bahreini Abdolazim Sedighi Pashaki Mohammad Hadi Gholami Rezvan Najafi Source Type: research

Expression of phosphoenolpyruvate carboxykinase linked to chemoradiation susceptibility of human colon cancer cells
Conclusion: Our overall results demonstrate that mPEPCK is a useful predictor of a response to chemoradiotherapy in patients with rectal cancer.
Source: BMC Cancer - March 6, 2014 Category: Cancer & Oncology Authors: Ji-Won ParkSeung KimWon KimJun HongKyung-Hee KimHyun YeoJae LeeM KimJong KimSe YangDae KimJae OhJae ChoByong Yoo Source Type: research

The basal epithelial marker P-cadherin associates with breast cancer cell populations harboring a glycolytic and acid-resistant phenotype
Conclusions: Our results establish a link between aberrant P-cadherin expression and hypoxic, glycolytic and acid-resistant breast cancer cells, suggesting a possible role for this marker in cancer cell metabolism.
Source: BMC Cancer - October 1, 2014 Category: Cancer & Oncology Authors: Bárbara SousaAna RibeiroAna NobreNair LopesDiana MartinsCéline PinheiroAndré VieiraAndré AlbergariaRené GerhardFernando SchmittFátima BaltazarJoana Paredes Source Type: research

Rt-40 * the down-regulation of h-ferritin as an adjuvant therapy in human glioma
This study supports the potential of H-ferritin siRNA as an adjuvant therapy in glioma treatment.
Source: Neuro-Oncology - November 3, 2014 Category: Cancer & Oncology Authors: Pang, M., Liu, X., Madhankumar, A. B., Slagle-Webb, B., Connor, J. Tags: RADIATION THERAPY (CLINICAL AND/OR LABORATORY RESEARCH) Source Type: research

Abstract 861: Survivin-mediated adaptive response: a risk factor for IGRT
Exposure of cells to very low doses of ionizing radiation can induce an enhanced resistance or adaptive response to a subsequent larger radiation dose as demonstrated by an increase in cell survival. Expression of a radio-adaptive response has been attributed to pro-survival signaling processes induced by very low radiation doses in the range of 5 to 100 mGy. The radiation-induced adaptive response is gaining considerable attention due in part to the expanding use of imaging technologies such as computerized axial tomography and portal imaging to monitor tumor response and positioning during multi-dose standard radiation t...
Source: Cancer Research - September 30, 2014 Category: Cancer & Oncology Authors: Grdina, D. J., Murley, J. S., Miller, R. C., Woloschak, G. E., Li, J. J., Weichselbaum, R. R. Tags: Clinical Research (Excluding Clinical Trials) Source Type: research

Abstract 3937: Inhibition of Notch and HIF enhances the antitumor effect of radiation in Notch expressing lung cancer
Conclusions: Radiation-induced up-regulation of Notch pathway and HIF-1α might provide therapeutic targets for more effective radiation therapy in NSCLC. Citation Format: Yasuyuki Ikezawa, Jun Sakakibara-Konishi, Hidenori Mizugaki, Satoshi Oizumi, Masaharu Nishimura. Inhibition of Notch and HIF enhances the antitumor effect of radiation in Notch expressing lung cancer. [abstract]. In: Proceedings of the 105th Annual Meeting of the American Association for Cancer Research; 2014 Apr 5-9; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2014;74(19 Suppl):Abstract nr 3937. doi:10.1158/1538-7445.AM2014-3937
Source: Cancer Research - September 30, 2014 Category: Cancer & Oncology Authors: Ikezawa, Y., Sakakibara-Konishi, J., Mizugaki, H., Oizumi, S., Nishimura, M. Tags: Tumor Biology Source Type: research

Systemic PSMA-Targeted IR Sensitization
Radiation therapy is a highly effective tool for treating all stages of prostate cancer, from curative approaches in localized disease to palliative care and enhanced survival for patients with distant bone metastases. The therapeutic index of these approaches may be enhanced with targeted radiation-sensitizing agents. Aptamers are promising nucleic acid delivery agents for short interfering RNAs (siRNA) and short hairpin RNAs (shRNA). We have previously developed a radiation-sensitizing RNA aptamer–shRNA chimera that selectively delivers DNA-PK targeting shRNAs to prostate-specific membrane antigen (PSMA) positive c...
Source: Molecular Cancer Therapeutics - December 6, 2015 Category: Cancer & Oncology Authors: Ni, X., Zhang, Y., Zennami, K., Castanares, M., Mukherjee, A., Raval, R. R., Zhou, H., DeWeese, T. L., Lupold, S. E. Tags: Large Molecule Therapeutics Source Type: research

Silencing of DNA repair sensitizes pediatric brain tumor cells to ɣ-irradiation using gold nanoparticles
We present a nanoparticle (NP)-mediated delivery vehicle that effectively carries and protects siRNA in pediatric ependymoma (EP) and medulloblastoma (MB) cells. The delivery vehicle consists of gold NPs coated with a polymeric shell comprising polyethylene glycol (PG), chitosan and polyethyleneimine (Au-CP-PEI). NPs loaded with siRNA knocked down Ape1 expression by over 75% in both MB and EP cells. Further, this reduction in Ape1 expression is associated with an increase in DNA damage after irradiation. The results indicate that NP-associated delivery of siApe1 is a feasible approach to circumventing pediatric brain tumor...
Source: Environmental Toxicology and Pharmacology - April 28, 2017 Category: Environmental Health Source Type: research

Silencing of DNA repair sensitizes pediatric brain tumor cells to γ-irradiation using gold nanoparticles
We present a nanoparticle (NP)-mediated delivery vehicle that effectively carries and protects siRNA in pediatric ependymoma (EP) and medulloblastoma (MB) cells. The delivery vehicle consists of gold NPs coated with a polymeric shell comprising polyethylene glycol (PG), chitosan and polyethyleneimine (Au-CP-PEI). NPs loaded with siRNA knocked down Ape1 expression by over 75% in both MB and EP cells. Further, this reduction in Ape1 expression is associated with an increase in DNA damage after irradiation. The results indicate that NP-associated delivery of siApe1 is a feasible approach to circumventing pediatric brain tumor...
Source: Environmental Toxicology and Pharmacology - May 11, 2017 Category: Environmental Health Source Type: research

Cancers, Vol. 12, Pages 1122: The Role of lncRNAs TAPIR-1 and -2 as Diagnostic Markers and Potential Therapeutic Targets in Prostate Cancer
Muders Sommer Baretton Wirth Horn In search of new biomarkers suitable for the diagnosis and treatment of prostate cancer, genome-wide transcriptome sequencing was carried out with tissue specimens from 40 prostate cancer (PCa) and 8 benign prostate hyperplasia patients. We identified two intergenic long non-coding transcripts, located in close genomic proximity, which are highly expressed in PCa. Microarray studies on a larger cohort comprising 155 patients showed a profound diagnostic potential of these transcripts (AUC~0.94), which we designated as tumor associated prostate cancer increased lncRNA (TAP...
Source: Cancers - April 29, 2020 Category: Cancer & Oncology Authors: Friedrich Wiedemann Reiche Puppel Pfeifer Zipfel Binder K öhl M üller Engeland Aigner F üssel Fr öhner Peitzsch Dubrovska Rade Christ Schreiber Hackerm üller Lehmann Toma Muders Sommer Baretton Wirth Horn Tags: Article Source Type: research

Prospective of colon cancer treatments and scope for combinatorial approach to enhanced cancer cell apoptosis
Abstract: Colorectal cancer is the leading cause of cancer-related mortality in the western world. It is also the third most common cancer diagnosed in both men and women in the United States with a recent estimate for new cases of colorectal cancer in the year 2012 being around 103,170. Various risk factors for colorectal cancer include life-style, diet, age, personal and family history, and racial and ethnic background. While a few cancers are certainly preventable but this does not hold true for colon cancer as it is often detected in its advanced stage and generally not diagnosed until symptoms become apparent. Despite...
Source: Critical Reviews in Oncology Hematology - October 24, 2012 Category: Cancer & Oncology Authors: Jayshree Mishra, Joseph Drummond, Sohel H. Quazi, Satya Sridhar Karanki, J.J. Shaw, Ben Chen, Narendra Kumar Source Type: research

Activation of p53 with Nutlin-3a radiosensitizes lung cancer cells via enhancing radiation-induced premature senescence
Abstract: Radiotherapy is routinely used for the treatment of lung cancer. However, the mechanisms underlying ionizing radiation (IR)-induced senescence and its role in lung cancer treatment are poorly understood. Here, we show that IR suppresses the proliferation of human non-small cell lung cancer (NSCLC) cells via an apoptosis-independent mechanism. Further investigations reveal that the anticancer effect of irradiation correlates well with IR-induced premature senescence, as evidenced by increased senescence-associated β-glactosidase (SA-β-gal) staining, decreased BrdU incorporation and elevated expression of p16INK4...
Source: Lung Cancer - May 20, 2013 Category: Cancer & Oncology Authors: Hongmei Luo, Caroline Yount, Hainan Lang, Aimin Yang, Ellen C. Riemer, Katherine Lyons, Kenneth N. Vanek, Gerard A. Silvestri, Bradley A. Schulte, Gavin Y. Wang Tags: Carcinogenesis and molecular biology Source Type: research

Role of moesin in hyaluronan induced cell migration in glioblastoma multiforme
Conclusions: Our results suggest that development of inhibitors which interfere with CD44-moesin interactions may open a new avenue in the future to mitigate cellular migration in gliomas.
Source: Molecular Cancer - July 15, 2013 Category: Cancer & Oncology Authors: Leroi DeSouzaAjay MattaZia KarimJoydeep MukherjeeX WangOlga KrakovskaGelareh ZadehAbhijit GuhaKW Siu Source Type: research

Adaptive Response Diminishes Therapeutic Effectiveness
Adaptive responses can be induced in cells by very low doses of ionizing radiation resulting in an enhanced resistance to much larger exposures. The inhibitor of apoptosis protein, survivin, has been implicated in many adaptive responses to cellular stress. Computerized axial tomography used in image-guided radiotherapy to position and monitor tumor response uses very low radiation doses ranging from 0.5 to 100 mGy. We investigated the ability of these very low radiation doses administered along with two 2 Gy doses separated by 24 hours, a standard conventional radiotherapy dosing schedule, to initiate adaptive responses r...
Source: Cancer Research - July 15, 2013 Category: Cancer & Oncology Authors: Grdina, D. J., Murley, J. S., Miller, R. C., Mauceri, H. J., Sutton, H. G., Li, J. J., Woloschak, G. E., Weichselbaum, R. R. Tags: Therapeutics, Targets, and Chemical Biology Source Type: research

Estrogen Receptor Alpha regulates ATM expression through miRNAs in breast cancer.
CONCLUSIONS: We reveal a novel mechanism involving ERα and miRNA 18a and 106a regulation of ATM in breast cancer. PMID: 23857602 [PubMed - as supplied by publisher]
Source: Clinical Cancer Research - July 15, 2013 Category: Cancer & Oncology Authors: Guo X, Yang C, Qian X, Lei T, Li Y, Shen H, Fu L, Xu B Tags: Clin Cancer Res Source Type: research