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Radiation immune cancer

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https://www.readbyqxmd.com/read/29156910/genetic-biomarkers-associated-with-changes-in-quality-of-life-and-pain-following-palliative-radiotherapy-in-patients-with-bone-metastases
#1
Anthony Furfari, Bo Angela Wan, Keyue Ding, Andrew Wong, Liting Zhu, Andrea Bezjak, Rebecca Wong, Carolyn F Wilson, Carlo DeAngelis, Azar Azad, Edward Chow, George S Charames
BACKGROUND: Patients with bone metastases undergoing palliative radiation therapy (RT) may experience changes in both the functional and symptomatic aspects of quality of life (QOL). The European Organization of Cancer Research and Treatment (EORTC) QOL Questionnaire Core-15 Palliative (QLQ-C15-PAL) is a validated questionnaire employed to assess QOL specifically in palliative patients. Our study aimed to identify single-nucleotide variant (SNV) genetic biomarkers associated with changes in QOL and pain...
September 28, 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/29152614/ataxia-telangiectasia-mutated-kinase-role-in-myocardial-remodeling
#2
Patsy Thrasher, Mahipal Singh, Krishna Singh
Ataxia-telangiectasia mutated kinase (ATM) is a serine/threonine kinase. Mutations in the ATM gene cause a rare autosomal multisystemic disease known as Ataxia-telangiectasia (AT). Individuals with mutations in both copies of the ATM gene suffer from increased susceptibility to ionizing radiation, predisposition to cancer, insulin resistance, immune deficiency, and premature aging. Patients with one mutated allele make-up ~1.4 to 2% of the general population. These individuals are spared from most of the symptoms of the disease...
2017: Journal of Rare Diseases Research & Treatment
https://www.readbyqxmd.com/read/29143272/preliminary-results-of-immune-modulating-antibody-mdv9300-pidilizumab-treatment-in-children-with-diffuse-intrinsic-pontine-glioma
#3
Iris Fried, Alex Lossos, Tal Ben Ami, Rina Dvir, Helen Toledano, Myriam Weil Ben Arush, Sergei Postovski, Abed Abu Kuidar, Michal Yalon, Michael Weintraub, Mony Benifla
Diffuse intrinsic pontine glioma (DIPG) is an incurable disease with a median overall survival of 10 months. Immune modulating antibodies have recently emerged as a highly promising treatment modality in multiple cancer types. We present results from the first study to evaluate the immune modulating antibody MDV9300 (pidilizumab) in pediatric patients with DIPG. All patients aged 3 years and older, diagnosed with DIPG between February 2014 and June 2015 in Israel, were offered to participate in the study...
November 15, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29138841/enhanced-activated-t%C3%A2-cell-subsets-in-prostate-cancer-patients-receiving-iodine-125-low-dose-rate-prostate-brachytherapy
#4
Makoto Kubo, Takefumi Satoh, Hiromichi Ishiyama, Ken-Ichi Tabata, Hideyasu Tsumura, Shoko Komori, Masatsugu Iwamura, Shiro Baba, Kazushige Hayakawa, Toshihiko Kawamura, Fumiya Obata
Radiotherapy (RT) is one of the most important treatments for prostate cancer. Although RT can kill cancer cells through direct and indirect effects of radiation, it occasionally induces an abscopal effect whereby localized radiation treatment is associated with elimination of metastatic cancer at a distance from the irradiated area. Thus, RT may induce an effective antitumor immune response, although the mechanism involved has remained unclear. The present was designed to evaluate this effect of RT in 36 patients with prostate cancer who provided informed consent prior to enrollment in this clinical trial...
November 13, 2017: Oncology Reports
https://www.readbyqxmd.com/read/29137877/immune-analysis-of-radium-223-in-patients-with-metastatic-prostate-cancer
#5
Joseph W Kim, Min Sun Shin, Youna Kang, Insoo Kang, Daniel P Petrylak
BACKGROUND: Radium223 (Ra223) delivers high-energy radiation to osteoblastic metastasis of prostate cancer, resulting in irreparable double-stranded DNA damage. The effects of Ra223 on CD8+ T cell subsets in patients with prostate cancer is unknown. PATIENTS AND METHODS: Fifteen men with metastatic prostate cancer with clinical indication for Ra223 without any autoimmune or immune deficiency conditions were enrolled. Patients received a course of Ra223 50 kBq/kg...
October 24, 2017: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/29136080/ultraviolet-radiation-induced-immunosuppression-and-its-relevance-for-skin-carcinogenesis
#6
Prue H Hart, Mary Norval
The realisation that UV radiation (UVR) exposure could induce a suppressed immune environment for the initiation of carcinogenesis in the skin was first described more than 40 years ago. Van der Leun and his colleagues contributed to this area in the 1980s and 90s by experiments in mice involving UV wavelength and dose-dependency in the formation of such tumours, in addition to illustrating both the local and systemic effect of the UVR on the immune system. Since these early days, many aspects of the complex pathways of UV-induced immunosuppression have been studied and are outlined in this review...
November 14, 2017: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/29126306/the-future-of-radiobiology
#7
David G Kirsch, Max Diehn, Aparna H Kesarwala, Amit Maity, Meredith A Morgan, Julie K Schwarz, Robert Bristow, Sandra Demaria, Iris Eke, Robert J Griffin, Daphne Haas-Kogan, Geoff S Higgins, Alec C Kimmelman, Randall J Kimple, Isabelle M Lombaert, Li Ma, Brian Marples, Frank Pajonk, Catherine C Park, Dörthe Schaue, Eric J Bernhard
Innovation and progress in radiation oncology depend on discovery and insights realized through research in radiation biology. Radiobiology research has led to fundamental scientific insights, from the discovery of stem/progenitor cells to the definition of signal transduction pathways activated by ionizing radiation that are now recognized as integral to the DNA damage response (DDR). Radiobiological discoveries are guiding clinical trials that test radiation therapy combined with inhibitors of the DDR kinases DNA-dependent protein kinase (DNA-PK), ataxia telangiectasia mutated (ATM), ataxia telangiectasia related (ATR), and immune or cell cycle checkpoint inhibitors...
November 3, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29124692/ultraviolet-radiations-skin-defense-damage-mechanism
#8
Dheeraj Mohania, Shikha Chandel, Parveen Kumar, Vivek Verma, Kumar Digvijay, Deepika Tripathi, Khushboo Choudhury, Sandeep Kumar Mitten, Dilip Shah
UV-radiations are the invisible part of light spectra having a wavelength between visible rays and X-rays. Based on wavelength, UV rays are subdivided into UV-A (320-400 nm), UV-B (280-320 nm) and UV-C (200-280 nm). Ultraviolet rays can have both harmful and beneficial effects. UV-C has the property of ionization thus acting as a strong mutagen, which can cause immune-mediated disease and cancer in adverse cases. Numbers of genetic factors have been identified in human involved in inducing skin cancer from UV-radiations...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29124688/uv-induced-molecular-signaling-differences-in-melanoma-and-non-melanoma-skin-cancer
#9
Feng Liu-Smith, Jinjing Jia, Yan Zheng
There are three major types of skin cancer: melanoma, basal cell carcinoma (BCC) and squamous cell carcinoma (SCC). BCC and SCC are often referred to as non-melanoma skin cancer (NMSC). NMSCs are relatively non-lethal and curable by surgery, hence are not reportable in most cancer registries all over the world. Melanoma is the deadliest skin cancer. Its incidence rate (case number) is about 1/10th of that for NMSC, yet its death toll is ~8 fold higher than NMSC.Melanomas arise from melanocytes which are normally located on the basement membrane with dendrites extending into the epidermal keratinocytes...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29123950/immune-evasion-mechanisms-and-immune-checkpoint-inhibition-in-advanced-merkel-cell-carcinoma
#10
REVIEW
Dirk Schadendorf, Paul Nghiem, Shailender Bhatia, Axel Hauschild, Philippe Saiag, Lisa Mahnke, Subramanian Hariharan, Howard L Kaufman
Merkel cell carcinoma (MCC) is a rare skin cancer caused by Merkel cell polyomavirus (MCPyV) infection and/or ultraviolet radiation-induced somatic mutations. The presence of tumor-infiltrating lymphocytes is evidence that an active immune response to MCPyV and tumor-associated neoantigens occurs in some patients. However, inhibitory immune molecules, including programmed death-1 (PD-1) and programmed death-ligand 1 (PD-L1), within the MCC tumor microenvironment aid in tumor evasion of T-cell-mediated clearance...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29123947/translational-nanoparticle-engineering-for-cancer-vaccines
#11
REVIEW
Adam J Grippin, Elias J Sayour, Duane A Mitchell
Conventional cancer treatments remain insufficient to treat many therapy-resistant tumors.(1) Cancer vaccines attempt to overcome this resistance by activating the patient's immune system to eliminate tumor cells without the toxicity of systemic chemotherapy and radiation. Nanoparticles (NPs) are promising as customizable, immunostimulatory carriers to protect and deliver antigen. Although many NP vaccines have been investigated in preclinical settings, a few have advanced into clinical application, and still fewer have demonstrated clinical benefit...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29115209/exploring-the-use-of-ingenol-mebutate-to-prevent-non-melanoma-skin-cancer
#12
Andrés Már Erlendsson
Non-melanoma skin cancer is the most frequently occurring cancer in Caucasians today. Incidence rates in Europe have increased steadily since the 1960s and more than tripled over the last 50 years. Despite primary preventative efforts, incidences of non-melanoma skin cancer continue to rise and development of effective chemopreventative strategies is needed. In 2013, ingenol mebutate was approved in Denmark as a new topical drug for field-directed treatment for actinic keratoses. Ingenol mebutate has a dual mechanism of action, causing initial cell death, followed by an immune activation...
November 2017: Danish Medical Journal
https://www.readbyqxmd.com/read/29113972/localized-synchrotron-irradiation-of-mouse-skin-induces-persistent-systemic-genotoxic-and-immune-responses
#13
Jessica Ventura, Pavel N Lobachevsky, Jason S Palazzolo, Helen Forrester, Nicole M Haynes, Alesia Ivashkevich, Andrew W Stevenson, Christopher J Hall, Andreas Ntargaras, Vasilis Kotsaris, Gerasimos Ch Pollakis, Gianna Potsi, Konstantinos Skordylis, Georgia Terzoudi, Ioannis S Pateras, Vassilis G Gorgoulis, Alexandros G Georgakilas, Carl N Sprung, Olga A Martin
The importance of nontargeted (systemic) effects of ionizing radiation is attracting increasing attention. Exploiting synchrotron radiation generated by the Imaging and Medical Beamline at the Australian Synchrotron, we studied radiation-induced nontargeted effects in C57BL/6 mice. Mice were locally irradiated with a synchrotron X-ray broad beam and a multiplanar microbeam radiotherapy beam. To assess the influence of the beam configurations and variations in peak dose and irradiated area in the response of normal tissues outside the irradiated field at 1 and 4 days after irradiation, we monitored oxidatively induced clustered DNA lesions (OCDL), DNA double-strand breaks (DSB), apoptosis, and the local and systemic immune responses...
November 7, 2017: Cancer Research
https://www.readbyqxmd.com/read/29113321/radiation-alters-pd-l1-nkg2d-ligand-levels-in-lung-cancer-cells-and-leads-to-immune-escape-from-nk-cell-cytotoxicity-via-il-6-mek-erk-signaling-pathway
#14
Ming Jing Shen, Li Jun Xu, Li Yang, Ying Tsai, Peter C Keng, Yongbing Chen, Soo Ok Lee, Yuhchyau Chen
We investigated whether radiation influences the susceptibility of non-small cell lung cancer (NSCLC) cells to NK cell mediated cytotoxicity. We found radiation treatment increased expression of programmed cell death ligand 1 (PD-L1), but decreased NK group 2, member D (NKG2D) ligand expressions in A549 and H157 NSCLC cells. Both types of changes would have protected tumor cells from the cytotoxic action of NK cells. Consistently, we detected similar alteration in these molecules in radioresistant A549R26-1 and H157R24-1 subline cells...
October 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/29113120/the-sod-mimic-mnte-2-pyp-protects-from-chronic-fibrosis-and-inflammation-in-irradiated-normal-pelvic-tissues
#15
Shashank Shrishrimal, Elizabeth A Kosmacek, Arpita Chatterjee, McDonald J Tyson, Rebecca E Oberley-Deegan
Pelvic radiation for cancer therapy can damage a variety of normal tissues. In this study, we demonstrate that radiation causes acute changes to pelvic fibroblasts such as the transformation to myofibroblasts and the induction of senescence, which persist months after radiation. The addition of the manganese porphyrin, MnTE-2-PyP, resulted in protection of these acute changes in fibroblasts and this protection persisted months following radiation exposure. Specifically, at two months post-radiation, MnTE-2-PyP inhibited the number of α-smooth muscle actin positive fibroblasts induced by radiation and at six months post-radiation, MnTE-2-PyP significantly reduced collagen deposition (fibrosis) in the skin and bladder tissues of irradiated mice...
November 6, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29107073/immunometabolic-determinants-of-chemoradiotherapy-response-and-survival-in-head-and-neck-squamous-cell-carcinoma
#16
Rosemarie Krupar, Matthias G Hautmann, Ravi R Pathak, Indu Varier, Cassandra McLaren, Doris Gaag, Claus Hellerbrand, Matthias Evert, Simon Laban, Christian Idel, Vlad Sandulache, Sven Perner, Anja K Bosserhoff, Andrew G Sikora
Tumor immune microenvironment and tumor metabolism are major determinants of chemoradiotherapy response. The interdependency and prognostic significance of specific immune and metabolic phenotypes in head and neck squamous cell carcinoma (HNSCC) were assessed and changes in reactive oxygen species were evaluated as a mechanism of treatment response in tumor spheroid/immunocyte co-cultures. Pretreatment tumor biopsies were immunohistochemically characterized in 73 HNSCC patients treated by definitive chemoradiotherapy and correlated with survival...
October 27, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/29102647/the-transcriptional-landscape-of-radiation-treated-human-prostate-cancer-analysis-of-a-prospective-tissue-cohort
#17
Simon P Keam, Franco Caramia, Cristina Gamell, Piotr J Paul, Gisela Mir Arnau, Paul J Neeson, Scott G Williams, Ygal Haupt
PURPOSE: The resistance of prostate cancer to radiation therapy (RT) is a significant clinical issue and still largely unable to be guided by patient-specific molecular characteristics. The present study describes the gene expression changes induced in response to RT in human prostate tissue obtained from a prospective tissue acquisition study designed for radiobiology research. METHODS AND MATERIALS: A prospective cohort of 5 men with intermediate-risk and clinically localized tumors were treated with high-dose-rate brachytherapy with 2 × 10-Gy fractions...
September 25, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29102276/effect-of-cd4-count-on-treatment-toxicity-and-tumor-recurrence-in-human-immunodeficiency-virus-positive-patients-with-anal-cancer
#18
Alex K Bryant, Ross Mudgway, Minh-Phuong Huynh-Le, Daniel R Simpson, Loren K Mell, Samir Gupta, Andrew B Sharabi, James D Murphy
PURPOSE: To study the effects of immunosuppression on treatment toxicity, long-term cancer recurrence risk, and survival among human immunodeficiency virus (HIV)-positive anal cancer patients. METHODS AND MATERIALS: From a nationwide retrospective cohort of veterans with anal cancer we identified 142 HIV-positive patients with stage I-III disease, diagnosed between 2000 and 2015 and treated with definitive-intent chemotherapy and radiation. We used regression models to study the impact of pretreatment CD4 counts and longitudinal posttreatment CD4 counts on outcomes including acute toxicity, long-term ostomy rates, cancer recurrence, cancer-specific survival, and overall survival...
September 22, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29081790/the-melim-minipig-an-original-spontaneous-model-to-explore-cutaneous-melanoma-genetic-basis
#19
REVIEW
Emmanuelle Bourneuf
Melanoma is the deadliest skin cancer and is a major public health concern with a growing incidence worldwide. As for other complex diseases, animal models are needed in order to better understand the mechanisms leading to pathology, identify potential biomarkers to be used in the clinics, and eventually molecular targets for therapeutic solutions. Cutaneous melanoma, arising from skin melanocytes, is mainly caused by environmental factors such as UV radiation; however a significant genetic component participates in the etiology of the disease...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/29075259/virus-specific-t-cells-for-the-immunocompromised-patient
#20
REVIEW
Amy Houghtelin, Catherine M Bollard
While progress has been made in the treatment of both hematologic cancers and solid tumors, chemorefractory or relapsed disease often portends a dismal prognosis, and salvage chemotherapy or radiation expose patients to intolerable toxicities and may not be effective. Hematopoietic stem cell transplant offers the promise of cure for many patients, and while mismatched, unrelated or haploidentical donors are increasingly available, the recipients are at higher risk of severe immunosuppression and immune dysregulation due to graft versus host disease...
2017: Frontiers in Immunology
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