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Cancers

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https://www.readbyqxmd.com/read/28085080/exosomes-in-cancer-diagnostics
#1
REVIEW
Young Hwa Soung, Shane Ford, Vincent Zhang, Jun Chung
Exosomes are endosome derived extracellular vesicles of 30-120 nm size ranges. Exosomes have been identified as mediators of cell-to-cell communication by transferring bioactive molecules such as nucleic acids, proteins and lipids into recipient cells. While exosomes are secreted by multiple cell types, cancer derived exosomes not only influence the invasive potentials of proximally located cells, but also affect distantly located tissues. Based on their ability to alter tumor microenvironment by regulating immunity, angiogenesis and metastasis, there has been growing interest in defining the clinical relevance of exosomes in cancers...
January 12, 2017: Cancers
https://www.readbyqxmd.com/read/28085048/ar-signaling-in-human-malignancies-prostate-cancer-and-beyond
#2
REVIEW
Michael T Schweizer, Evan Y Yu
In the 1940s Charles Huggins reported remarkable palliative benefits following surgical castration in men with advanced prostate cancer, and since then the androgen receptor (AR) has remained the main therapeutic target in this disease. Over the past couple of decades, our understanding of AR-signaling biology has dramatically improved, and it has become apparent that the AR can modulate a number of other well-described oncogenic signaling pathways. Not surprisingly, mounting preclinical and epidemiologic data now supports a role for AR-signaling in promoting the growth and progression of several cancers other than prostate, and early phase clinical trials have documented preliminary signs of efficacy when AR-signaling inhibitors are used in several of these malignancies...
January 11, 2017: Cancers
https://www.readbyqxmd.com/read/28075400/acknowledgement-to-reviewers-of-cancers-in-2016
#3
EDITORIAL
Cancers Editorial Office
The editors of Cancers would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2016.[...].
January 10, 2017: Cancers
https://www.readbyqxmd.com/read/28075351/circulating-nucleosomes-and-nucleosome-modifications-as-biomarkers-in-cancer
#4
REVIEW
Peter McAnena, James A L Brown, Michael J Kerin
Traditionally the stratification of many cancers involves combining tumour and clinicopathological features (e.g., patient age; tumour size, grade, receptor status and location) to inform treatment options and predict recurrence risk and survival. However, current biomarkers often require invasive excision of the tumour for profiling, do not allow monitoring of the response to treatment and stratify patients into broad heterogeneous groups leading to inconsistent treatment responses. Here we explore and describe the benefits of using circulating biomarkers (nucleosomes and/or modifications to nucleosomes) as a non-invasive method for detecting cancer and monitoring response to treatment...
January 8, 2017: Cancers
https://www.readbyqxmd.com/read/28067809/expression-and-clinical-significance-of-androgen-receptor-in-triple-negative-breast-cancer
#5
Yuka Asano, Shinichiro Kashiwagi, Wataru Goto, Sayaka Tanaka, Tamami Morisaki, Tsutomu Takashima, Satoru Noda, Naoyoshi Onoda, Masahiko Ohsawa, Kosei Hirakawa, Masaichi Ohira
BACKGROUND: Triple-negative breast cancer (TNBC) has a poor prognosis because of frequent recurrence. Androgen receptor (AR) is involved in the pathogenesis of breast cancer, but its role is not clearly defined. The aim of this study was to explore the expression of AR and its relationship with clinicopathologic features in TNBC. METHODS: This study investigated 1036 cases of sporadic invasive breast carcinoma. Immunohistochemical assays were performed to determine the expression of AR in 190 TNBC samples...
January 6, 2017: Cancers
https://www.readbyqxmd.com/read/28067802/stabilization-of-nucleosomes-by-histone-tails-and-by-fact-revealed-by-spfret-microscopy
#6
Maria E Valieva, Nadezhda S Gerasimova, Kseniya S Kudryashova, Anastasia L Kozlova, Mikhail P Kirpichnikov, Qi Hu, Maria Victoria Botuyan, Georges Mer, Alexey V Feofanov, Vasily M Studitsky
A correct chromatin structure is important for cell viability and is tightly regulated by numerous factors. Human protein complex FACT (facilitates chromatin transcription) is an essential factor involved in chromatin transcription and cancer development. Here FACT-dependent changes in the structure of single nucleosomes were studied with single-particle Förster resonance energy transfer (spFRET) microscopy using nucleosomes labeled with a donor-acceptor pair of fluorophores, which were attached to the adjacent gyres of DNA near the contact between H2A-H2B dimers...
January 6, 2017: Cancers
https://www.readbyqxmd.com/read/28054944/the-role-of-histone-protein-modifications-and-mutations-in-histone-modifiers-in-pediatric-b-cell-progenitor-acute-lymphoblastic-leukemia
#7
REVIEW
Szymon Janczar, Karolina Janczar, Agata Pastorczak, Hani Harb, Adam J W Paige, Beata Zalewska-Szewczyk, Marian Danilewicz, Wojciech Mlynarski
While cancer has been long recognized as a disease of the genome, the importance of epigenetic mechanisms in neoplasia was acknowledged more recently. The most active epigenetic marks are DNA methylation and histone protein modifications and they are involved in basic biological phenomena in every cell. Their role in tumorigenesis is stressed by recent unbiased large-scale studies providing evidence that several epigenetic modifiers are recurrently mutated or frequently dysregulated in multiple cancers. The interest in epigenetic marks is especially due to the fact that they are potentially reversible and thus druggable...
January 3, 2017: Cancers
https://www.readbyqxmd.com/read/28042819/retroareolar-carcinomas-in-breast-ultrasound-pearls-and-pitfalls
#8
REVIEW
Romuald Ferré, Martine Paré, Lisa Smith, Mélanie Thériault, Ann Aldis, Ellen Kao, Benoit Mesurolle
Breast Ultrasound (US) is an important tool for both screening and diagnostic examinations. Although breast US has benefitted from significant recent technical improvements, its use for the retroareolar region is known to be more challenging than for other locations. The retroareolar location was defined by Giess et al. in 1998 as the region where any lesion is situated at less than two cm from the nipple and/or involves the nipple-areolar complex on mammogram. Understanding of the complex anatomy and physiology of the nipple-areolar region is important to avoid misinterpretation and misdiagnosis...
December 30, 2016: Cancers
https://www.readbyqxmd.com/read/27983677/erratum-roche-j-et-al-global-decrease-of-histone-h3k27-acetylation-in-zeb1-induced-epithelial-to-mesenchymal-transition-in-lung-cancer-cells-cancers-2013-5-334-356
#9
Joëlle Roche, Patrick Nasarre, Robert Gemmill, Aleksander Baldys, Julien Pontis, Christopher Korch, Joëlle Guilhot, Slimane Ait-Si-Ali, Harry Drabkin
n/a.
December 15, 2016: Cancers
https://www.readbyqxmd.com/read/27983592/ensuring-quality-in-online-palliative-care-resources
#10
Jennifer Tieman
Evidence and information is an integral part of the processes enabling clinical and service delivery within health. It is used by health professionals in clinical practice and in developing their professional knowledge, by policy makers in decision making, and is sought by health consumers to help them manage their health needs and assess their options. Increasingly, this evidence and information is being disseminated and sought through online channels. The internet is fundamentally changing how health information is being distributed and accessed...
December 13, 2016: Cancers
https://www.readbyqxmd.com/read/27973407/comparative-mirna-analysis-of-urine-extracellular-vesicles-isolated-through-five-different-methods
#11
Felix Royo, Izzuddin Diwan, Michael R Tackett, Patricia Zuñiga, Pilar Sanchez-Mosquera, Ana Loizaga-Iriarte, Aitziber Ugalde-Olano, Isabel Lacasa, Amparo Perez, Miguel Unda, Arkaitz Carracedo, Juan M Falcon-Perez
Urine extracellular vesicles are a valuable low-invasive source of information, especially for the cells of the genitourinary tract. In the search for biomarkers, different techniques have been developed to isolate and characterize the cargo of these vesicles. In the present work, we compare five of these different isolation methods (three commercial isolation kits, ultracentrifugation, and lectin-based purification) and perform miRNA profiling using a multiplex miRNA assay. The results showed high correlation through all isolation techniques, and 48 out of 68 miRNAs were detected above the detection limit at least 10 times...
December 10, 2016: Cancers
https://www.readbyqxmd.com/read/27941677/the-enrichment-of-survivin-in-exosomes-from-breast-cancer-cells-treated-with-paclitaxel-promotes-cell-survival-and-chemoresistance
#12
Bridget T Kreger, Eric R Johansen, Richard A Cerione, Marc A Antonyak
The generation and release of membrane-enclosed packets from cancer cells, called extracellular vesicles (EVs), play important roles in propagating transformed phenotypes, including promoting cell survival. EVs mediate their effects by transferring their contents, which include specific proteins and nucleic acids, to target cells. However, how the cargo and function of EVs change in response to different stimuli remains unclear. Here, we discovered that treating highly aggressive MDAMB231 breast cancer cells with paclitaxel (PTX), a chemotherapy that stabilizes microtubules, causes them to generate a specific class of EV, namely exosomes, that are highly enriched with the cell survival protein and cancer marker, Survivin...
December 9, 2016: Cancers
https://www.readbyqxmd.com/read/27941674/biology-therapy-and-implications-of-tumor-exosomes-in-the-progression-of-melanoma
#13
REVIEW
Allison L Isola, Kevinn Eddy, Suzie Chen
Cancer is the second leading cause of death in the United States, and about 6% of the estimated cancer diagnoses this year will be melanoma cases. Melanomas are derived from transformation of the pigment producing cells of the skin, melanocytes. Early stage melanoma is usually curable by surgical resection, but late stage or subsequent secondary metastatic tumors are treated with some success with chemotherapies, radiation and/or immunotherapies. Most cancer patients die from metastatic disease, which is especially the case in melanoma...
December 9, 2016: Cancers
https://www.readbyqxmd.com/read/27929427/a-comparison-of-singlet-oxygen-explicit-dosimetry-soed-and-singlet-oxygen-luminescence-dosimetry-sold-for-photofrin-mediated-photodynamic-therapy
#14
Michele M Kim, Rozhin Penjweini, Nathan R Gemmell, Israel Veilleux, Aongus McCarthy, Gerald S Buller, Robert H Hadfield, Brian C Wilson, Timothy C Zhu
Accurate photodynamic therapy (PDT) dosimetry is critical for the use of PDT in the treatment of malignant and nonmalignant localized diseases. A singlet oxygen explicit dosimetry (SOED) model has been developed for in vivo purposes. It involves the measurement of the key components in PDT-light fluence (rate), photosensitizer concentration, and ground-state oxygen concentration ([³O₂])-to calculate the amount of reacted singlet oxygen ([¹O₂]rx), the main cytotoxic component in type II PDT. Experiments were performed in phantoms with the photosensitizer Photofrin and in solution using phosphorescence-based singlet oxygen luminescence dosimetry (SOLD) to validate the SOED model...
December 6, 2016: Cancers
https://www.readbyqxmd.com/read/27918430/androgen-receptor-a-complex-therapeutic-target-for-breast-cancer
#15
REVIEW
Ramesh Narayanan, James T Dalton
Molecular and histopathological profiling have classified breast cancer into multiple sub-types empowering precision treatment. Although estrogen receptor (ER) and human epidermal growth factor receptor (HER2) are the mainstay therapeutic targets in breast cancer, the androgen receptor (AR) is evolving as a molecular target for cancers that have developed resistance to conventional treatments. The high expression of AR in breast cancer and recent discovery and development of new nonsteroidal drugs targeting the AR provide a strong rationale for exploring it again as a therapeutic target in this disease...
December 2, 2016: Cancers
https://www.readbyqxmd.com/read/27916840/ligand-activation-of-tam-family-receptors-implications-for-tumor-biology-and-therapeutic-response
#16
REVIEW
Viralkumar Davra, Stanley G Kimani, David Calianese, Raymond B Birge
The TAM family of receptors (i.e., Tyro3, Axl, and Mertk), and their ligands Growth arrest specific factor 6 (Gas6) and Protein S (Pros1) contribute to several oncogenic processes, such as cell survival, invasion, migration, chemo-resistance, and metastasis, whereby expression often correlates with poor clinical outcomes. In recent years, there has been great interest in the study of TAM receptors in cancer, stemming both from their roles as oncogenic signaling receptors, as well as their roles in tumor immunology...
November 29, 2016: Cancers
https://www.readbyqxmd.com/read/27886124/advances-in-cancer-immunotherapy-in-solid-tumors
#17
REVIEW
Smitha Menon, Sarah Shin, Grace Dy
Immunotherapy is heralded as one of the most important advances in oncology. Until recently, only limited immunotherapeutic options were available in selected immunogenic cancers like melanoma and renal cell carcinomas. Nowadays, there is an improved understanding that anti-tumor immunity is controlled by a delicate balance in the tumor microenvironment between immune stimulatory and immune inhibitory pathways. Either by blocking the inhibitory pathways or stimulating the activating pathways that regulate cytotoxic lymphocytes, anti-tumor immunity can be enhanced leading to durable anti-tumor responses...
November 24, 2016: Cancers
https://www.readbyqxmd.com/read/27854287/caregiving-and-its-resulting-effects-the-care-study-to-evaluate-the-effects-of-caregiving-on-caregivers-of-patients-with-advanced-cancer-in-singapore
#18
Cheryl Kai Ting Chua, Jun Tian Wu, Yin Yee Wong, Limin Qu, Yung Ying Tan, Patricia Soek Hui Neo, Grace Suyin Pang
Informal caregivers (IC) are key to enabling home deaths, where preferred, at the end-of-life. Significant morbidity from advanced cancer can make caregiving burdensome. However, knowledge about the nature of the caregiving burden for caregivers in Singapore is limited. Hence, the key objective in this study was to examine the impact of the caregiving burden on quality of life (QOL), mental health and work capacity among local ICs. Eligible English-speaking ICs of hospitalized advanced cancer patients were recruited through non-random sampling...
November 15, 2016: Cancers
https://www.readbyqxmd.com/read/27854273/a-music-therapist-shares-stories-of-patients-with-cancer
#19
Kathy Jo Gutgsell
n/a.
November 15, 2016: Cancers
https://www.readbyqxmd.com/read/27834845/the-receptor-tyrosine-kinase-axl-in-cancer-progression
#20
REVIEW
Erinn B Rankin, Amato J Giaccia
The AXL receptor tyrosine kinase (AXL) has emerged as a promising therapeutic target for cancer therapy. Recent studies have revealed a central role of AXL signaling in tumor proliferation, survival, stem cell phenotype, metastasis, and resistance to cancer therapy. Moreover, AXL is expressed within cellular components of the tumor microenvironment where AXL signaling contributes to the immunosuppressive and protumorigenic phenotypes. A variety of AXL inhibitors have been developed and are efficacious in preclinical studies...
November 9, 2016: Cancers
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