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Radiotherapy cancer biomarkers

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https://www.readbyqxmd.com/read/28325958/micrornas-involvement-in-radioresistance-of-head-and-neck-cancer
#1
REVIEW
Parwez Ahmad, Jiri Sana, Marek Slavik, Pavel Slampa, Pavel Smilek, Ondrej Slaby
Resistance to the ionizing radiation is a current problem in the treatment and clinical management of various cancers including head and neck cancer. There are several biological and molecular mechanisms described to be responsible for resistance of the tumors to radiotherapy. Among them, the main mechanisms include alterations in intracellular pathways involved in DNA damage and repair, apoptosis, proliferation, and angiogenesis. It has been found that regulation of these complex processes is often controlled by microRNAs...
2017: Disease Markers
https://www.readbyqxmd.com/read/28314294/mismatch-repair-protein-deficiency-is-a-risk-factor-for-aberrant-expression-of-hla-class-i-molecules-a-putative-adaptive-immune-escape-phenomenon
#2
Terufumi Kubo, Yoshihiko Hirohashi, Kazuhiko Matsuo, Tomoko Sonoda, Hiroki Sakamoto, Kiyoshi Furumura, Tomohide Tsukahara, Takayuki Kanaseki, Munehide Nakatsugawa, Hiroshi Hirano, Tomohisa Furuhata, Ichiro Takemasa, Tadashi Hasegawa, Toshihiko Torigoe
Accumulating evidence indicates that immune checkpoint inhibition-mediated cancer immunotherapies greatly improve the prognosis of certain types of cancer. This approach is now becoming a standard therapy, joining surgery, radiotherapy, and chemotherapy. Because the costs of antibody drugs are now a socioeconomic burden in many countries, an urgent need in cancer immunotherapy is the identification of relevant biomarkers that can predict therapy efficacy. Recent studies have reported that colorectal adenocarcinoma with hereditary or sporadic deficiency in mismatch repair (MMR) proteins has high antigenicity and that detection of these proteins could be a promising way to estimate clinical response...
March 2017: Anticancer Research
https://www.readbyqxmd.com/read/28314270/global-microrna-expression-profiling-identifies-unique-microrna-pattern-of-radioresistant-glioblastoma-cells
#3
Jakub Ondracek, Pavel Fadrus, Jiri Sana, Andrej Besse, Tomas Loja, Marek Vecera, Lenka Radova, Martin Smrcka, Pavel Slampa, Ondrej Slaby
Glioblastoma multiforme (GBM) is the most aggressive intracranial tumor characterized with infaust prognosis. Despite advances in neurosurgical and radiotherapeutic techniques and chemotherapy, the median overall survival ranges between 12-15 months from diagnosis. The main cause of treatment failure is considered the presence of tumor cells resistant to conventional therapy, mainly radiotherapy. MicroRNAs (miRNAs) are small, non-coding RNAs that function as post-transcriptional regulators of gene expression and have been repeatedly proven to play important roles in pathogenesis and biological features of many cancers, including GBM and its radioresistant phenotype...
March 2017: Anticancer Research
https://www.readbyqxmd.com/read/28291739/a-radiobiological-model-of-metastatic-burden-reduction-for-molecular-radiotherapy-application-to-patients-with-bone-metastases
#4
Ana M Denis-Bacelar, Sarah J Chittenden, Iain Murray, Antigoni Divoli, V Ralph McCready, David P Dearnaley, Joe M O'Sullivan, Bernadette Johnson, Glenn D Flux
Skeletal tumour burden is a biomarker of prognosis and survival in cancer patients. This study proposes a novel method based on the linear quadratic model to predict the reduction in metastatic tumour burden as a function of the absorbed doses delivered from molecular radiotherapy treatments. The range of absorbed doses necessary to eradicate all the bone lesions and to reduce the metastatic burden was investigated in a cohort of 22 patients with bone metastases from castration-resistant prostate cancer. A metastatic burden reduction curve was generated for each patient, which predicts the reduction in metastatic burden as a function of the patient mean absorbed dose, defined as the mean of all the lesion absorbed doses in any given patient...
April 7, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28287017/oxidative-stress-and-gsts-genetic-polymorphisms-in-medical-staff-professionally-exposed-to-ionizing-radiation
#5
Hajer Doukali, Ghada Ben Salah, Latifa Hamdaoui, Mounira Hajjaji, Mouna Tabebi, Leila Ammar-Keskes, Mohamed-Elarbi Masmoudi, Hassen Kamoun
PURPOSE: Ionizing radiation (IR) is considered as a diagnostic and therapeutic tool in medicine. However, chronic occupational exposure of medical staff to IR may affect the antioxidant status and, as result, DNA damage and cancers as well. The objective of our study was to evaluate the oxidative stress profile caused by IR in 29 Tunisian medical staff from radiology and radiotherapy departments, and to find an association between the GSTM1null, GSTT1null, and GSTP1 Ile105Val polymorphisms and oxidative stress biomarkers...
March 13, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/28281355/systemic-effects-of-ionizing-radiation-at-the-proteome-and-metabolome-levels-in-the-blood-of-cancer-patients-treated-with-radiotherapy-the-influence-of-inflammation-and-radiation-toxicity
#6
Karol Jelonek, Monika Pietrowska, Piotr Widlak
Purpose Blood is the most common replacement tissue used to study systemic responses of organisms to different types of pathological conditions and environmental insults. Local irradiation during cancer radiotherapy induces whole body responses that can be observed at the blood proteome and metabolome levels. Hence, comparative blood proteomics and metabolomics are emerging approaches used in the discovery of radiation biomarkers. These techniques enable the simultaneous measurement of hundreds of molecules and the identification of sets of components that can discriminate different physiological states of the human body...
March 10, 2017: International Journal of Radiation Biology
https://www.readbyqxmd.com/read/28273745/histogram-analysis-of-apparent-diffusion-coefficient-for-monitoring-early-response-in-patients-with-advanced-cervical-cancers-undergoing-concurrent-chemo-radiotherapy
#7
Jie Meng, Lijing Zhu, Li Zhu, Yun Ge, Jian He, Zhengyang Zhou, Xiaofeng Yang
Background Apparent diffusion coefficient (ADC) histogram analysis has been widely used in determining tumor prognosis. Purpose To investigate the dynamic changes of ADC histogram parameters during concurrent chemo-radiotherapy (CCRT) in patients with advanced cervical cancers. Material and Methods This prospective study enrolled 32 patients with advanced cervical cancers undergoing CCRT who received diffusion-weighted (DW) magnetic resonance imaging (MRI) before CCRT, at the end of the second and fourth week during CCRT and one month after CCRT completion...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28259207/polymer-decorated-gold-nanoparticles-in-nanomedicine-conjugates
#8
REVIEW
Ignác Capek
Noble metal, especially gold nanoparticles and their conjugates with biopolymers have immense potential for disease diagnosis and therapy on account of their surface plasmon resonance (SPR) enhanced light scattering and absorption. Conjugation of noble metal nanoparticles to ligands specifically targeted to biomarkers on diseased cells allows molecular-specific imaging and detection of disease. The development of smart gold nanoparticles (AuNPs) that can deliver therapeutics at a sustained rate directly to cancer cells may provide better efficacy and lower toxicity for treating cancer tumors...
February 15, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28259107/expression-of-programmed-cell-death-ligand-in-cutaneous-squamous-cell-carcinoma-and-treatment-of-locally-advanced-disease-with-pembrolizumab
#9
Mary L Stevenson, Claire Q F Wang, Melody Abikhair, Nazanin Roudiani, Diane Felsen, James G Krueger, Anna C Pavlick, John A Carucci
Importance: Limited therapies are available in patients with inoperable locally advanced cutaneous squamous cell carcinoma (cSCC). Objective: To determine the efficacy of programmed cell death 1 receptor (PD-1) inhibitors in locally advanced cSCC. Design, Setting, and Participants: A single patient with locally advanced cSCC who declined surgery and radiotherapy underwent treatment with pembrolizumab, an anti-PD-1 antibody, at an academic dermatologic surgery section and cancer center...
March 4, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28225015/identification-of-protein-biomarkers-and-signaling-pathways-associated-with-prostate-cancer-radioresistance-using-label-free-lc-ms-ms-proteomic-approach
#10
Lei Chang, Jie Ni, Julia Beretov, Valerie C Wasinger, Jingli Hao, Joseph Bucci, David Malouf, David Gillatt, Peter H Graham, Yong Li
Identifying biomarkers and signaling pathways are important for the management of prostate cancer (CaP) radioresistance. In this study, we identified differential proteins and signaling pathways from parental CaP cell lines and CaP radioresistant (RR) sublines using a label-free LC-MS/MS proteomics approach. A total of 309 signaling pathway proteins were identified to be significantly altered between CaP and CaP-RR cells (p ≤ 0.05, fold differences >1.5, ≥80% power). Among these proteins, nineteen are common among three paired CaP cell lines and associated with metastasis, progression and radioresistance...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28207525/plasma-levels-of-soluble-programmed-death-ligand-1-may-be-associated-with-overall-survival-in-nonsmall-cell-lung-cancer-patients-receiving-thoracic-radiotherapy
#11
Jing Zhao, Peng Zhang, Jianhua Wang, Qingsong Xi, Xueqi Zhao, Minghua Ji, Guangyuan Hu
Immune-checkpoint signaling plays an important role in immunosuppression of tumors. We aimed to investigate the association of soluble programmed death-ligand 1 (sPD-L1) level in plasma with overall survival (OS) in locally advanced or inoperable nonsmall-cell lung cancer (NSCLC) patients treated with thoracic radiotherapy (TRT). We used ELISA to evaluate the sPD-L1 levels at diagnosis and during TRT in 126 clinically inoperable NSCLC patients. OS rates were followed up and recorded. SPSS software and GraphPad Prism 5 were used for statistics...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28206966/impact-of-dna-repair-gene-polymorphisms-on-the-risk-of-biochemical-recurrence-after-radiotherapy-and-overall-survival-in-prostate-cancer
#12
Chiara Zanusso, Roberto Bortolus, Eva Dreussi, Jerry Polesel, Marcella Montico, Erika Cecchin, Sara Gagno, Flavio Rizzolio, Mauro Arcicasa, Giacomo Novara, Giuseppe Toffoli
The identification of biomarkers of biochemical recurrence (BCR) in prostate cancer (PCa) patients undergoing radiotherapy (RT) represents an unanswered clinical issue. The primary aim of this study was the definition of new genetic prognostic biomarkers in DNA repair genes (DRGs), considering both BCR and overall survival (OS) as clinical end-points. The secondary aim was to explore the potential clinical impact of these genetic variants with the decision curve analysis (DCA) and the sensitivity analysis.We analyzed 22 germline polymorphisms in 14 DRGs on 542 Caucasian PCa patients treated with RT as primary therapy...
February 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28199751/impact-of-polymorphisms-in-angiogenesis-related-genes-on-clinical-outcomes-of-radiotherapy-in-patients-with-nasopharyngeal-carcinoma
#13
Wan-Le Ma, Rong Liu, Li-Hua Huang, Chan Zou, Jie Huang, Jing Wang, Shao-Jun Chen, Xiang-Guang Meng, Jing-Ke Yang, Han Li, Guo-Ping Yang, Cheng-Xian Guo
PURPOSE: To assess the relationship between gene polymorphism in angiogenesis-related genes and radiation responses in nasopharyngeal carcinoma (NPC) patients. METHODS: The genotypes of 180 NPC patients were analyzed by Sequenom MassARRAY. The Response Evaluation Criteria in Solid Tumors were used for assessing efficacies. And The criteria of Radiation Therapy Oncology Group or European Organization for Research & Treatment of Cancer were utilized for evaluating acute toxic reactions in response to radiation...
February 15, 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/28188495/cancer-treatment-and-the-kir-hla-system-an-overview
#14
REVIEW
Patrizia Leone, Valli De Re, Angelo Vacca, Franco Dammacco, Vito Racanelli
Accumulating evidence indicates that the success of cancer therapy depends not only on a combination of adequate procedures (surgery, chemotherapy and radiotherapy) that aim to eliminate all tumor cells, but also on the functional state of the host immune system. HLA and KIR molecules, in particular, are critical to the interactions between tumor cells and both innate and adaptive immune cells such as NK cells and T cells. Different KIR-HLA gene combinations as well as different HLA expression levels on tumor cells associate with variable tumor prognosis and response to treatment...
February 10, 2017: Clinical and Experimental Medicine
https://www.readbyqxmd.com/read/28186469/blood-based-nucleic-acid-biomarkers-as-a-potential-tool-to-determine-radiation-therapy-response-in-non-small-cell-lung-cancer
#15
Christopher R Deig, Marc S Mendonca, Tim Lautenschlaeger
Lung cancer is the leading cause of cancer deaths worldwide, with smoking as the main risk factor. The use of low-dose computed tomography (LDCT) as a screening method has shown a 20% lung cancer specific mortality benefit; however, widespread implementation is estimated to add $1.3-$2.0 billion in annual national health care expenditures. Blood-based microRNAs (miRNAs), have been investigated in detail and found to be potentially useful biomarkers indicating the presence of lung cancer, especially when used as a companion test to LDCT...
February 10, 2017: Radiation Research
https://www.readbyqxmd.com/read/28179285/potential-predictive-role-of-micrornas-in-the-neoadjuvant-treatment-of-esophageal-cancer
#16
REVIEW
David Vrana, Marcel Matzenauer, Rene Aujesky, Radek Vrba, Cestmir Neoral, Bohuslav Melichar, Pavel Souček
Esophageal cancer is a disease with disappointing prognosis. Currently, there are no predictive factors that can identify patients who on the one hand would likely benefit from tri-modality management and, on the other hand, would not be significantly affected by the morbidity accompanying the treatment. MicroRNAs are short non-coding RNAs responsible for post-transcriptional modification of gene expression by binding to 3'-UTR of messenger RNA and represent emerging potential predictive biomarkers of treatment (chemotherapy and radiotherapy) efficacy and toxicity...
2017: Anticancer Research
https://www.readbyqxmd.com/read/28178355/effects-of-exercise-training-on-circulating-levels-of-dickkpof-1-and-secreted-frizzled-related-protein-1-in-breast-cancer-survivors-a-pilot-single-blind-randomized-controlled-trial
#17
Tae Ho Kim, Jae Seung Chang, Kyu-Sang Park, Jeeyeon Park, Nahyun Kim, Jong In Lee, In Deok Kong
BACKGROUND: Wingless and integration site growth factor (Wnt) signaling is a tumorigenesis-related signaling pathway. Dickkpof-1 (DKK1) and secreted frizzled-related protein-1 (SFRP1) are endogenous negative regulators of Wnt/β-catenin signaling. Accumulating evidence indicates that higher serum levels of DKK1 are correlated with poor prognosis of various types of cancer. Here, we investigated whether exercise training causes changes in the serum levels of DKK1 and SFRP1 in patients with breast cancer...
2017: PloS One
https://www.readbyqxmd.com/read/28176411/diffusion-radiomics-analysis-of-intratumoral-heterogeneity-in-a-murine-prostate-cancer-model-following-radiotherapy-pixelwise-correlation-with-histology
#18
Yu-Chun Lin, Gigin Lin, Ji-Hong Hong, Yi-Ping Lin, Fang-Hsin Chen, Shu-Hang Ng, Chun-Chieh Wang
PURPOSE: To investigate the biological meaning of apparent diffusion coefficient (ADC) values in tumors following radiotherapy. MATERIALS AND METHODS: Five mice bearing TRAMP-C1 tumor were half-irradiated with a dose of 15 Gy. Diffusion-weighted images, using multiple b-values from 0 to 3000 s/mm(2) , were acquired at 7T on day 6. ADC values calculated by a two-point estimate and monoexponential fitting of signal decay were compared between the irradiated and nonirradiated regions of the tumor...
February 8, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28164759/neoadjuvant-therapy-for-her2-positive-breast-cancer
#19
Rachel Wuerstlein, Nadia Harbeck
In HER2-positive early breast cancer, neoadjuvant treatment with a combination of sequential chemotherapy and HER2-targeted therapy is currently the standard of care. This is followed by breast surgery, radiotherapy (if indicated), completion of 12 months of HER2-directed therapy, and -depending on the tumor biology - endocrine adjuvant therapy, and ultimately follow up. 10-year survival rates in the HER2-positive subgroup of breast cancer do reach now more than 75% with the introduction of first adjvuant and later neoadjuvant HER2-targeted therapies over the last 15 years...
February 2, 2017: Reviews on Recent Clinical Trials
https://www.readbyqxmd.com/read/28164664/serum-amyloid-p-component-level-may-be-a-biomarker-for-lung-toxicities-and-overall-survival-after-thoracic-radiotherapy-for-non-small-cell-lung-cancer
#20
Jing Zhao, Alexander Chi, Rui Mao, Guangyuan Hu, Minghua Ji
BACKGROUND: Serum amyloid P-component (SAP) contributes to the clearance of apoptotic cells. As one of the main acute-phase reactants, SAP regulates key aspects of inflammation and sets a threshold for immune cell activation. This study aimed to investigate the association of SAP levels with symptomatic lung toxicities after thoracic radiotherapy (TRT) and overall survival (OS) in non-small lung cancer (NSCLC) patients. METHODS: The SAP level at diagnosis and during TRT was evaluated by ELISA in 113 clinically inoperable NSCLC patients...
November 1, 2016: Clinical Laboratory
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