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https://www.readbyqxmd.com/read/28522750/inhibition-of-mitochondrial-matrix-chaperones-and-anti-apoptotic-bcl-2-family-proteins-empower-antitumor-therapeutic-responses
#1
Georg Karpel-Massler, Chiaki Tsuge Ishida, Elena Bianchetti, Chang Shu, Rolando Perez-Lorenzo, Basil Horst, Matei Banu, Kevin A Roth, Jeffrey N Bruce, Peter Canoll, Dario C Altieri, Markus D Siegelin
Rational therapeutic approaches based on synthetic lethality may improve cancer management. Based on a high-throughput drug screen, we provide preclinical proof of concept that targeting the mitochondrial Hsp90 chaperone network (mtHsp90) and inhibition of Bcl-2, Bcl-xL and Mcl-1 is sufficient to elicit synthetic lethality in tumors recalcitrant to therapy. Our analyses focused on BH3 mimetics that are broad acting (ABT263 and Obatoclax) or selective (ABT199, WEHI-539 and A1210477), along with the established mitochondrial matrix chaperone inhibitor Gamitrinib-TPP...
May 18, 2017: Cancer Research
https://www.readbyqxmd.com/read/28514195/analysis-of-the-use-and-impact-of-twitter-during-american-society-of-clinical-oncology-annual-meetings-from-2011-to-2016-focus-on-advanced-metrics-and-user-trends
#2
Naveen Pemmaraju, Michael A Thompson, Ruben A Mesa, Tejas Desai
PURPOSE: The use of social media, in particular Twitter, has substantially increased among health care stakeholders in the field of hematology and oncology, with an especially sharp increase in the use of Twitter during times of major national meetings. The most attended meeting in the oncology field is the ASCO annual meeting. Little is known about the detailed metrics involved in the use, volume, and impact of Twitter during the ASCO annual meeting. METHODS: We conducted a retrospective review of tweets during the ASCO annual meetings from 2011 to 2016...
May 17, 2017: Journal of Oncology Practice
https://www.readbyqxmd.com/read/28513838/the-emerging-role-of-npnt-in-tissue-injury-repair-and-bone-homeostasis
#3
REVIEW
Youqiang Sun, Vincent Kuek, Heng Qiu, Jennifer Tickner, Leilei Chen, Haibin Wang, Wei He, Jiake Xu
Nephronectin (NPNT), a highly conserved extracellular matrix protein, plays an important role in regulating cell adhesion, differentiation, spreading and survival. NPNT protein belongs to epidermal growth factor (EGF)-like superfamily and exhibits several common structural determinants; including EGF-like repeat domains, MAM domain (Meprin, A5 Protein, and Receptor Protein-Tyrosine Phosphatase µ), RGD motif (Arg-Gly-Asp) and a coiled-coil domain. It regulates integrins-mediated signaling pathways via the interaction of its RGD motif with integrin α8β1...
May 17, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28512032/cytotoxic-triterpene-diglycosides-from-the-sea-cucumber-stichopus-horrens
#4
Nguyen Xuan Cuong, Le Thi Vien, Le Hoang, Tran Thi Hong Hanh, Do Thi Thao, Nguyen Van Thanh, Nguyen Hoai Nam, Do Cong Thung, Phan Van Kiem, Chau Van Minh
Using various chromatographic separation techniques, eight triterpene diglycosides (1-8), including four new compounds namely stichorrenosides A-D (1-4), were isolated from a methanol extract of the Vietnamese sea cucumber S. horrens. Their structures were elucidated based on spectroscopic analyses, including HR ESI MS, 1D and 2D NMR. Their in vitro cytotoxic activity against five human cancer cell lines, Hep-G2 (hepatoma cancer), KB (epidermoid carcinoma), LNCaP (prostate cancer), MCF7 (breast cancer), and SK-Mel2 (melanoma), was evaluated using SRB methods...
May 6, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28507808/pro-necrotic-molecules-impact-local-immunosurveillance-in-human-breast-cancer
#5
Gautier Stoll, Yuting Ma, Heng Yang, Oliver Kepp, Laurence Zitvogel, Guido Kroemer
Necrosis culminates in spilling cellular content through the permeabilized plasma membrane, thereby releasing potentially immunostimulatory molecules in the pericellular space of dead cells. Accordingly, molecules involved in necroptotic signaling, such as receptor-interacting serine/threonine-protein kinase 3 (RIPK3) and mixed lineage kinase-like (MLKL) have been found to stimulate anticancer immune responses in mouse models of chemotherapy. mRNAs encoding prominent pro-necrotic gene products (RIPK1, RIPK3, MLKL, PGAM5 and DFNA5) were correlated with immune-related metagenes in several cancer types (breast, colorectal, lung, ovary, melanoma), revealing the strongest associations in breast cancer...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28506076/nos2-as-an-emergent-player-in-progression-of-cancer
#6
Douglas D Thomas, David A Wink
Though the inducible form of nitric oxide synthase (NOS2) was initially shown to be a major player as an anti-tumor component of the immune response, more recent data has shown that NOS2 expression in cancer cells often predicts poor outcome. Unlike growth factors associated with a single oncogenic pathway, nitric oxide (NO) has a ubiquitous nature where it simultaneously mediates major oncogenic pathways from Akt/PI3K and RAS/ERK to HIF1a and TGFb. These interactive loops perpetuate oncogenic mechanism that lead to increased cancer stemness, proliferation metastasis, chemoresistance, angiogenesis, and immunosuppression...
May 15, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28505181/overexpression-of-pyruvate-dehydrogenase-kinase-1-in-retinoblastoma-a-potential-therapeutic-opportunity-for-targeting-vitreous-seeds-and-hypoxic-regions
#7
Swatishree Sradhanjali, Devjyoti Tripathy, Suryasnata Rath, Ruchi Mittal, Mamatha M Reddy
Pyruvate dehydrogenase kinase 1 (PDK1), a key enzyme implicated in metabolic reprogramming of tumors, is induced in several tumors including glioblastoma, breast cancer and melanoma. However, the role played by PDK1 is not studied in retinoblastoma (RB). In this study, we have evaluated the expression of PDK1 in RB clinical samples, and studied its inhibition as a strategy to decrease cell growth and migration. We show that PDK1 is specifically overexpressed in RB patient samples especially in vitreous seeds and hypoxic regions and cell lines compared to control retina using immunohistochemistry and real-time PCR...
2017: PloS One
https://www.readbyqxmd.com/read/28492371/prognostic-value-of-tumoral-expression-of-galectin-9-in-gastric-cancer
#8
Sang Il Choi, Ki Woo Seo, Myeong Cherl Kook, Chan Gyoo Kim, Young Woo Kim, Soo Jeong Cho
BACKGROUND/AIMS: Galectin-9 (Gal-9) is a member of the β-galactoside-binding lectin family. Our previous study revealed that Gal-9 suppresses migration, invasion, and epithelial-mesenchymal transition in gastric cancer cells. Gal-9 was reported to have anti-metastatic activity in patients with malignant melanoma, breast cancer, and hepatocellular carcinoma. Therefore, we aimed to evaluate the prognostic significance of Gal-9 in patients with gastric cancer. MATERIALS AND METHODS: The clinical significance of Gal-9 was explored using clinical and pathological data from 619 patients with gastric cancer who underwent gastrectomy at National Cancer Center, Korea...
May 2017: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/28492039/skin-cancer-concerns-particular-to-women
#9
REVIEW
Z Al-Dujaili, M Henry, A S Dorizas, N S Sadick
BACKGROUND: Skin cancer has reached epidemic proportions, with more new cases diagnosed annually than the combined incidence of cancers of the breast, prostate, lung, and colon. Estimates show 2 to 3 million new cases of non-melanoma skin cancer (NMSC) every year, and, among women, it is the young (younger than 45 years) who are disproportionately affected. OBJECTIVE: This article aims to address questions and concerns pertinent to skin cancer in a woman-centric way...
March 2017: International Journal of Women's Dermatology
https://www.readbyqxmd.com/read/28487463/male-breast-cancer-as-a-second-primary-cancer-increased-risk-following-lymphoma
#10
Deborah E Farr, Alexandra Thomas, Seema Ahsan Khan, Mary C Schroeder
BACKGROUND: Male breast cancer (MBC) as a second primary cancer (SPC) has a known association with prior MBC. However, its association with non-breast index malignancies, relative to population risk, has not been previously reported. MATERIALS AND METHODS: Using Surveillance, Epidemiology, and End Results program (9 catchment area) data, we identified MBCs diagnosed from 1973-2012 as their SPC. Information regarding the index malignancy was also obtained. Standardized incidence ratios (SIR) of MBC as SPC were estimated, along with incidence rates and trends...
May 9, 2017: Oncologist
https://www.readbyqxmd.com/read/28486273/zebularine-treatment-induces-mage-a11-expression-and-improves-ctl-cytotoxicity-using-a-novel-identified-hla-a2-restricted-mage-a11-peptide
#11
Jiandong Zhang, Meixiang Sang, Lina Gu, Fei Liu, Weijing Li, Danjing Yin, Yunyan Wu, Shina Liu, Weina Huang, Baoen Shan
Melanoma-associated antigen-A11 (MAGE-A11) is frequently expressed in breast cancer and is associated with poor prognosis. Therefore, MAGE-A11 is a potential immunotherapy target in breast cancer. MAGE-A11 expression, however, is downregulated in many patients, thus constraining the application of immunotherapy. The induction of MAGE-A11 expression is crucial for the recognition and killing of breast cancer cells by cytotoxic T lymphocytes (CTL). In this study, a series of HLA-A2-restricted candidate MAGE-A11 peptides were predicted, synthesized, and tested...
May 8, 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/28485985/breast-metastases-from-extramammary-malignancies-multimodality-imaging-aspects
#12
Almir G V Bitencourt, Roberta R M Gama, Luciana Graziano, Erika M S Negrão, Silvia M P S Sabino, Anapaula H U Watanabe, Camila S Guatelli, Juliana A Souza, Edmundo C Mauad, Elvira F Marques
Breast metastases from extramammary cancers are rare and usually related to poor prognosis. The extramammary tumors most frequently exhibiting breast metastases are melanoma, lymphomas, ovarian cancer, lung, neuroendocrine tumors, and sarcomas. Due to the lack of reliable and specific clinical or radiological signs for the diagnosis of breast metastases, a combination of techniques is needed to differentiate these lesions from primary breast carcinoma or even benign breast lesions. Multiple imaging methods may be used to evaluate these patients, including mammography, ultrasound, magnetic resonance imaging (MRI), computed tomography (CT) and positron emission tomography (PET/CT)...
May 9, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28481877/cyp4a-in-tumor-associated-macrophages-promotes-pre-metastatic-niche-formation-and-metastasis
#13
X W Chen, T J Yu, J Zhang, Y Li, H L Chen, G F Yang, W Yu, Y Z Liu, X X Liu, C F Duan, H L Tang, M Qiu, C L Wang, H Zheng, J Yue, A M Guo, J Yang
Tumor-associated macrophages (TAMs) play an essential role in metastasis. However, what enables TAMs to have a superior capacity to establish pre-metastatic microenvironment in distant organs is unclear. Here we have begun to uncover the effects of cytochrome P450 (CYP) 4A in TAMs on lung pre-metastatic niche formation and metastasis. CYP4A(+) TAM infiltration was positively associated with metastasis, pre-metastatic niche formation and poor prognosis in breast cancer patients. The pharmacological inhibition of CYP4A reduced lung pre-metastatic niche formation (evidenced by a decrease in vascular endothelial growth factor receptor 1 positive (VEGFR1(+)) myeloid cell recruitment and pro-metastatic protein expression) and metastatic burden, accompanied with TAM polarization away from the M2 phenotype in spontaneous metastasis models of 4T1 breast cancer and B16F10 melanoma...
May 8, 2017: Oncogene
https://www.readbyqxmd.com/read/28480500/cancer-survivors-reported-discussions-with-health-care-providers-about-follow-up-care-and-receipt-of-written-care-plans
#14
Sarah C Reed, Rod Walker, Rebecca Ziebell, Borsika Rabin, Stephanie Nutt, Jessica Chubak, Larissa Nekhlyudov
Prior studies reveal gaps in cancer survivors' discussions with health care providers about follow-up care and receipt of care plans; however, whether survivorship care planning may vary by cancer type is not known. We surveyed 615 survivors of breast, colorectal, prostate, lung cancer, and melanoma enrolled in three health plans to examine cancer survivors' self-reported discussions of follow-up care, including the need for surveillance, late and long-term effects, emotional needs, and health behaviors. We assessed whether cancer survivors received a written treatment summary and post-treatment care instructions...
May 8, 2017: Journal of Cancer Education: the Official Journal of the American Association for Cancer Education
https://www.readbyqxmd.com/read/28473315/4-1bb-enhanced-expansion-of-cd8-til-from-triple-negative-breast-cancer-unveils-mutation-specific-cd8-t-cells
#15
Michiko Harao, Marie-Andrée Forget, Jason Roszik, Hui Gao, Gildy V Babiera, Savitri Krishnamurthy, Jessica A Chacon, Shumin Li, Elizabeth A Mittendorf, Sarah M DeSnyder, Korrene F Rockwood, Chantale Bernatchez, Naoto T Ueno, Laszlo G Radvanyi, Luis Vence, Cara Haymaker, James M Reuben
Triple negative breast cancer (TNBC) highly infiltrated with CD8(+) tumor-infiltrating lymphocytes (TILs) has been associated with improved prognosis. This observation led us to hypothesize that CD8(+) TIL could be utilized in autologous adoptive cell therapy for TNBC, although this concept has proven to be challenging, given the difficulty in expanding CD8(+) TILs in solid cancers other than melanoma. To overcome this obstacle, we used an agonistic antibody  (urelumab) to a TNFR family member, 4-1BB/CD137, which is expressed by recently activated CD8(+) T cells...
May 4, 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/28471952/prognostic-significance-of-pd-l1-in-solid-tumor-an-updated-meta-analysis
#16
Qianqian Wang, Fang Liu, Lei Liu
BACKGROUND: An increasing number of studies have examined the ability of programmed death-ligand 1 (PD-L1) to function as a marker for tumor prognosis. However, whether PD-L1 expression is a prognostic factor for the poor outcomes in many human cancers remains controversial. This study aims to investigate the prognostic role of PD-L1 expression through a meta-analysis update of 60 studies. METHODS: The studies were identified by searching PubMed, Embase, Google Scholar, and Cochrane Library, and were assessed by further quality evaluation...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28468864/nodal-signaling-as-a-developmental-therapeutics-target-in-oncology
#17
REVIEW
Aparna Kalyan, Benedito A Carneiro, Sunandana Chandra, Jason Kaplan, Young Kwang Chae, Maria Matsangou, Mary J C Hendrix, Francis Giles
The tumor microenvironment is a vital feature of oncogenesis and tumor progression. There are several parallels between cancer cells and early developmental stem cells, including their plasticity and signaling mechanisms. In early fetal development, Nodal is expressed for endodermal and mesodermal differentiation. This expression has been shown reemerge in the setting of epithelial cancers, such as breast and melanoma. High Nodal expression correlates to an aggressive tumor grade in these malignancies. Nodal signal begins with its interaction with its coreceptor, Cripto-1, leading to activation of Smad2/Smad3 and ultimately downstream transcription and translation...
May 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28459460/magea1-interacts-with-fbxw7-and-regulates-ubiquitin-ligase-mediated-turnover-of-nicd1-in-breast-and-ovarian-cancer-cells
#18
J Zhao, Y Wang, C Mu, Y Xu, J Sang
Melanoma-associated antigen A1 (MAGEA1) is member of the MAGE gene family that is expressed in male germ line cells and placenta under normal physiological conditions. Although MAGEA1's expression levels have been evaluated as one of the cancer testis (CT) antigens for immunotherapy in melanoma and several other cancers, its functional role and signaling mechanisms are largely unknown. In this study, we examined the functional involvement and signaling mechanisms of MAGEA1 in breast and ovarian cancer cells...
May 1, 2017: Oncogene
https://www.readbyqxmd.com/read/28458463/melanoma-and-brown-seaweed-an-integrative-hypothesis
#19
Jane Teas, Mohammad R Irhimeh
Although relatively rare, melanoma accounts for 2 % of cancer diagnoses globally and accounts for about 1 % of all cancer deaths. Worldwide, the annual incidence of melanoma is 272,000 cases which vary hugely, ranging from Japan where it is incredibly infrequent, to Queensland, Australia, where it is nearly 100 times higher. Based on epidemiology and laboratory studies, there is compelling evidence suggesting that seaweed might be protective against different types of cancers such as breast cancer in seaweed consuming populations...
2017: Journal of Applied Phycology
https://www.readbyqxmd.com/read/28448269/circulating-cell-free-micrornas-as-clinical-cancer-biomarkers
#20
REVIEW
Virginie Armand-Labit, Anne Pradines
MicroRNAs (miRNAs) are non-coding small RNAs that are master regulators of genic expression and consequently of many cellular processes. But their expression is often deregulated in human tumors leading to cancer development. Recently miRNAs were discovered in body fluids (serum, plasma and others) and their levels have often been reported to be altered in patients. Circulating miRNAs became one of the most promising biomarkers in oncology for early diagnosis, prognosis and therapeutic response prediction. Here we describe the origins and roles of miRNAs, and summarize the most recent studies focusing on their usefulness as cancer biomarkers in lung, breast, colon, prostate, ovary cancers and melanoma...
April 27, 2017: Biomolecular Concepts
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