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Cancer microenvironment

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https://www.readbyqxmd.com/read/29667346/in-situ-vaccination-harvesting-low-hanging-fruit-on-the-cancer-immunotherapy-tree
#1
REVIEW
Mee Rie Sheen, Steven Fiering
After 100 years of debate, it is clear that cancer is recognized by the immune system and this has generated immense interest in cancer immunotherapy. The systemic nature of the immune system gives immunotherapy the ability to treat metastatic disease, which currently requires chemotherapy that frequently fails. Like chemotherapy, most immunotherapy is systemically applied in an effort to generate systemic antitumor immune response. However, local administration of immunostimulatory reagents into a recognized tumor by in situ vaccination (ISV) can also generate systemic antitumor immunity to fight metastatic disease...
April 18, 2018: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/29667279/baicalein-disturbs-the-morphological-plasticity-and-motility-of-breast-adenocarcinoma-cells-depending-on-the-tumor-microenvironment
#2
Takeshi Terabayashi, Katsuhiro Hanada, Kou Motani, Hidetaka Kosako, Mami Yamaoka, Toshihide Kimura, Toshimasa Ishizaki
During tumor invasion, cancer cells change their morphology and mode of migration based on communication with the surrounding environment. Numerous studies have indicated that paracrine interactions from non-neoplastic cells impact the migratory and invasive properties of cancer cells. Thus, these interactions are potential targets for anticancer therapies. In this study, we showed that the flavones member baicalein suppresses the motility of breast cancer cells that is promoted by paracrine interactions. First, we identified laminin-332 (LN-332) as a principle paracrine factor in conditioned medium from mammary epithelium-derived MCF10A cells that regulates the morphology and motility of breast adenocarcinoma MDA-MB-231 cells...
April 18, 2018: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/29667084/investigation-of-the-aryl-hydrocarbon-receptor-and-the-intrinsic-tumoral-component-of-the-kynurenine-pathway-of-tryptophan-metabolism-in-primary-brain-tumors
#3
Anthony R Guastella, Sharon K Michelhaugh, Neil V Klinger, Hassan A Fadel, Sam Kiousis, Rouba Ali-Fehmi, William J Kupsky, Csaba Juhász, Sandeep Mittal
INTRODUCTION: There is mounting evidence supporting the role of tryptophan metabolism via the kynurenine pathway (KP) in the pathogenesis of primary brain tumors. Under normal physiological conditions, the KP is the major catabolic pathway for the essential amino acid tryptophan. However, in cancer cells, the KP becomes dysregulated, depletes local tryptophan, and contributes to an immunosuppressive tumor microenvironment. METHODS: We examined the protein expression levels (in 73 gliomas and 48 meningiomas) of the KP rate-limiting enzymes indoleamine 2,3-dioxygenase (IDO) 1, IDO2, and tryptophan 2,3-dioxygenase (TDO2), as well as, the aryl hydrocarbon receptor (AhR), a carcinogenic transcription factor activated by KP metabolites...
April 17, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29667069/the-versatile-role-of-exosomes-in-cancer-progression-diagnostic-and-therapeutic-implications
#4
REVIEW
Vignesh Sundararajan, Fazlul H Sarkar, Thamil Selvee Ramasamy
BACKGROUND: Recent advances in cancer biology have highlighted the relevance of exosomes and nanovesicles as carriers of genetic and biological messages between cancer cells and their immediate and/or distant environments. It has been found that these molecular cues may play significant roles in cancer progression and metastasis. Cancer cells secrete exosomes containing diverse molecules that can be transferred to recipient cells and/or vice versa to induce a plethora of biological processes, including angiogenesis, metastasis formation, therapeutic resistance, epithelial-mesenchymal transition and epigenetic/stemness (re)programming...
April 17, 2018: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/29666934/quo-vadis-do-immunotherapies-have-a-role-in-glioblastoma
#5
REVIEW
Sylvia C Kurz, Patrick Y Wen
PURPOSE OF REVIEW: More effective therapies for glioblastoma are urgently needed. Immunotherapeutic strategies appear particularly promising and are therefore intensively studied. This article reviews the current understanding of the immunosuppressive glioblastoma microenvironment, discusses the rationale behind various immunotherapies, and outlines the findings of several recently published clinical studies. RECENT FINDINGS: The results of CheckMate-143 indicated that nivolumab is not superior to bevacizumab in patients with recurrent glioblastoma...
April 18, 2018: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/29666812/tumor-progression-the-neuronal-input
#6
REVIEW
Marco Arese, Federico Bussolino, Margherita Pergolizzi, Laura Bizzozero, Davide Pascal
One of the challenges of cancer is its heterogeneity and rapid capacity to adapt. Notwithstanding significant progress in the last decades in genomics and precision medicine, new molecular targets and therapies appear highly necessary. One way to approach this complex problem is to consider cancer in the context of its cellular and molecular microenvironment, which includes nerves. The peripheral nerves, the topic of this review, modulate the biological behavior of the cancer cells and influence tumor progression, including the events related to the metastatic spread of the disease...
March 2018: Annals of Translational Medicine
https://www.readbyqxmd.com/read/29666625/dying-to-be-noticed-epigenetic-regulation-of-immunogenic-cell-death-for-cancer-immunotherapy
#7
REVIEW
Brianne Cruickshank, Michael Giacomantonio, Paola Marcato, Sherri McFarland, Jonathan Pol, Shashi Gujar
Immunogenic cell death (ICD) activates both innate and adaptive arms of the immune system during apoptotic cancer cell death. With respect to cancer immunotherapy, the process of ICD elicits enhanced adjuvanticity and antigenicity from dying cancer cells and consequently, promotes the development of clinically desired antitumor immunity. Cancer ICD requires the presentation of various "hallmarks" of immunomodulation, which include the cell-surface translocation of calreticulin, production of type I interferons, and release of high-mobility group box-1 and ATP, which through their compatible actions induce an immune response against cancer cells...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29666465/molecular-epidemiology-of-lung-cancer-in-iran-implications-for-drug-development-and-cancer-prevention
#8
REVIEW
Zahra Fathi, Nicholas L Syn, Jian-Guo Zhou, Raheleh Roudi
Epidemiological studies undertaken over the past decades reveal a gradual but progressive increase in the incidence and mortality attributable to lung cancer in the Islamic Republic of Iran, a sovereign state geographically situated at the crossroads of Central Eurasia and Western Asia. We identified references published in English and Persian through searches of PubMed, EMBASE, Web of Science, Scopus, and the Scientific Information Database (SID)-a specialized Iranian database, which indexes Iranian scientific journals-between inception and 15 September 2017...
April 18, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29666210/regulation-and-mechanisms-of-extracellular-vesicle-biogenesis-and-secretion
#9
REVIEW
Crislyn D'Souza-Schorey, Jeffrey S Schorey
EV (extracellular vesicle) biology is a rapidly expanding field. These heterogeneous membrane vesicles, which are shed from virtually all cell types, collectively represent a new dimension of intercellular communication in normal physiology and disease. They have been shown to deliver infectious and pathogenic agents to non-infected cells whereas in cancers they are thought to condition the tumor microenvironment. Their presence in body fluids and inherent capacity for systemic delivery point to their clinical promise...
April 17, 2018: Essays in Biochemistry
https://www.readbyqxmd.com/read/29665011/colony-stimulating-factor-1-receptor-blockade-improves-the-efficacy-of-chemotherapy-against-human-neuroblastoma-in-the-absence-of-t-lymphocytes
#10
Matthew W Webb, Jianping Sun, Michael A Sheard, Wei-Yao Liu, Hong-Wei Wu, Jeremy R Jackson, Jemily Malvar, Richard Sposto, Dylan Daniel, Robert C Seeger
Tumor-associated macrophages can promote growth of cancers. In neuroblastoma, tumor-associated macrophages have greater frequency in metastatic versus loco-regional tumors, and higher expression of genes associated with macrophages helps to predict poor prognosis in the 60% of high-risk patients who have MYCN-non-amplified disease. The contribution of cytotoxic T-lymphocytes to anti-neuroblastoma immune responses may be limited by low MHC class I expression and low exonic mutation frequency. Therefore, we modelled human neuroblastoma in T-cell deficient mice to examine whether depletion of monocytes/macrophages from the neuroblastoma microenvironment by blockade of CSF-1R can improve the response to chemotherapy...
April 17, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29664607/polyserotonin-nanoparticles-as-multifunctional-materials-for-biomedical-applications
#11
Nako Nakatsuka, Mohammad Mahdi Hasani-Sadrabadi, Kevin M Cheung, Thomas D Young, Ghasem Bahlakeh, Alireza Moshaverinia, Paul S Weiss, Anne M Andrews
Serotonin-based nanoparticles represent a class of previously unexplored multifunctional nanoplatforms with potential biomedical applications. Serotonin, under basic conditions, self-assembles into monodisperse nanoparticles via autoxidation of serotonin monomers. To demonstrate potential applications of polyserotonin nanoparticles for cancer therapeutics, we show that these particles are biocompatible, exhibit photothermal effects when exposed to near-infrared radiation, and load the chemotherapeutic drug doxorubicin releasing it contextually and responsively in specific microenvironments...
April 17, 2018: ACS Nano
https://www.readbyqxmd.com/read/29664013/%C3%AE-catenin-mediated-immune-evasion-pathway-frequently-operates-in-primary-cutaneous-melanomas
#12
Jérémie Nsengimana, Jon Laye, Anastasia Filia, Sally O'Shea, Sathya Muralidhar, Joanna Poźniak, Alastair Droop, May Chan, Christy Walker, Louise Parkinson, Joanne Gascoyne, Tracey Mell, Minttu Polso, Rosalyn Jewell, Juliette Randerson-Moor, Graham P Cook, D Timothy Bishop, Julia Newton-Bishop
Immunotherapy prolongs survival in only a subset of melanoma patients, highlighting the need to better understand the driver tumor microenvironment. We conducted bioinformatic analyses of 703 transcriptomes to probe the immune landscape of primary cutaneous melanomas in a population-ascertained cohort. We identified and validated 6 immunologically distinct subgroups, with the largest having the lowest immune scores and the poorest survival. This poor-prognosis subgroup exhibited expression profiles consistent with β-catenin-mediated failure to recruit CD141+ DCs...
April 16, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29663884/advances-in-tumor-targeted-liposomes
#13
A Jain, S K Jain
Cancer remains a deadly disease for effective treatment. Although anomalous tumor microenvironment is now widely exploited for targeted chemotherapy, safe and efficacious drug delivery to tumor cells is not still warranted. Liposomes are promising biodegradable and biocompatible nanocarriers having potential amenability for surface and internal modifications, and extraordinary capability to carry both hydrophilic as well as hydrophobhic drugs. Meticulous fabrication of liposomes with tumor selective ligand(s) and PEGylation reduces immunogenicity and increase target-specificity...
April 15, 2018: Current Molecular Medicine
https://www.readbyqxmd.com/read/29663340/molecular-signatures-in-hepatocellular-carcinoma-a-step-toward-rationally-designed-cancer-therapy
#14
REVIEW
Derek J Erstad, Bryan C Fuchs, Kenneth K Tanabe
Molecular characterization of hepatocellular carcinoma (HCC) has greatly improved our understanding of disease pathogenesis. Mutational analysis, RNA and microRNA expression profiling, and epigenetic characterization have revealed common aberrations in oncogenes and tumor suppressors that correlate with disease biology and serve as a guide for the rational design of targeted therapies. These approaches have also led to the discovery of novel targets, including mutations in isocitrate dehydrogenase and chromatin remodeling enzymes...
April 17, 2018: Cancer
https://www.readbyqxmd.com/read/29662647/characterization-of-increasing-stages-of-invasiveness-identifies-stromal-cancer-cell-crosstalk-in-rat-models-of-mesothelioma
#15
Joëlle S Nader, Jérôme Abadie, Sophie Deshayes, Alice Boissard, Stéphanie Blandin, Christophe Blanquart, Nicolas Boisgerault, Olivier Coqueret, Catherine Guette, Marc Grégoire, Daniel L Pouliquen
Sarcomatoid mesothelioma (SM) is a devastating cancer associated with one of the poorest outcome. Therefore, representative preclinical models reproducing different tumor microenvironments (TME) observed in patients would open up new prospects for the identification of markers and evaluation of innovative therapies. Histological analyses of four original models of rat SM revealed their increasing infiltrative and metastatic potential were associated with differences in Ki67 index, blood-vessel density, and T-lymphocyte and macrophage infiltration...
March 27, 2018: Oncotarget
https://www.readbyqxmd.com/read/29662633/tracking-cellular-and-molecular-changes-in-a-species-specific-manner-during-experimental-tumor-progression-in-vivo
#16
Emilie Indersie, Katarzyna B Hooks, Caroline Capdevielle, Monique Fabre, Nathalie Dugot-Senant, Angélique Desplat, Sébastien Lepreux, Aksam Merched, Christophe F Grosset, Martin Hagedorn
Hepatoblastoma (HBL) is a pediatric liver cancer with defined molecular alterations driving its progression. Here, we describe an animal model for HBL on the chick chorioallantoic membrane (CAM), which recapitulates relevant features of HBL in patients. Expression of classic tumor-associated proteins such as β-catenin, EpCAM and CK19 was maintained in acini-like organized tumors on CAM, as was synthesis of AFP, a tumor marker used for monitoring patient response. RNA sequencing revealed an unexpected molecular evolution of HBL cells on the CAM, with significant deregulation of more than 6,000 genes including more than half of all HOX genes...
March 23, 2018: Oncotarget
https://www.readbyqxmd.com/read/29662547/pd-l1-expression-testing-in-non-small-cell-lung-cancer
#17
REVIEW
Cristina Teixidó, Noelia Vilariño, Roxana Reyes, Noemí Reguart
In recent years, immunotherapy has revolutionized and changed the standard of care in patients with advanced non-small cell lung cancer (NSCLC). Immune checkpoint inhibitors, fundamentally those that act by blocking the programmed cell death receptor-1 (PD-1) and its ligand the programmed cell death ligand-1 (PD-L1) have emerged as novel treatment strategies in NSCLC, demonstrating undoubted superiority over chemotherapy in terms of efficacy. Several of these immune checkpoint modulators have recently gained regulatory approval for the treatment of advanced NSCLC, such as nivolumab, atezolizumab and pembrolizumab in first-line (only the latter) and second-line settings, and more recently, durvalumab as maintenance after chemoradiotherapy in locally advanced disease...
2018: Therapeutic Advances in Medical Oncology
https://www.readbyqxmd.com/read/29662490/mtor-at-the-transmitting-and-receiving-ends-in-tumor-immunity
#18
REVIEW
Yakir Guri, Thierry M Nordmann, Jason Roszik
Cancer is a complex disease and a leading cause of death worldwide. Immunity is critical for cancer control. Cancer cells exhibit high mutational rates and therefore altered self or neo-antigens, eliciting an immune response to promote tumor eradication. Failure to mount a proper immune response leads to cancer progression. mTOR signaling controls cellular metabolism, immune cell differentiation, and effector function. Deregulated mTOR signaling in cancer cells modulates the tumor microenvironment, thereby affecting tumor immunity and possibly promoting carcinogenesis...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29662489/immunological-approaches-towards-cancer-and-inflammation-a-cross-talk
#19
REVIEW
Xinglong Qu, Ying Tang, Shucheng Hua
The inflammation is the protective response of the body against various harmful stimuli; however, the aberrant and inappropriate activation tends to become harmful. The acute inflammatory response tends to resolved once the offending agent is subside but this acute response becomes chronic in nature when the body is unable to successfully neutralized the noxious stimuli. This chronic inflammatory microenvironment is associated with the release of various pro-inflammatory and oncogenic mediators such as nitric oxide (NO), cytokines [IL-1β, IL-2, interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α)], growth factor, and chemokines...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29661830/sustained-adrenergic-signaling-promotes-intratumoral-innervation-through-bdnf-induction
#20
Julie K Allen, Guillermo N Armaiz-Pena, Archana S Nagaraja, Nouara C Sadaoui, Tatiana Ortiz, Robert Dood, Merve Ozcan, Danielle M Herder, Monika Haemerrle, Kshipra M Gharpure, Rajesha Rupaimoole, Rebecca Previs, Sherry Y Wu, Sunila Pradeep, Xiaoyun Xu, Hee Dong Han, Behrouz Zand, Heather J Dalton, Morgan Taylor, Wei Hu, Justin Bottsford-Miller, Myrthala Moreno-Smith, Yu Kang, Lingegowda S Mangala, Cristian Rodriguez-Aguayo, Vasudha Sehgal, Erika L Spaeth, Prahlad T Ram, Stephen Tc Wong, Frank C Marini, Gabriel Lopez-Berestein, Steve W Cole, Susan K Lutgendorf, Mariella diBiasi, Anil K Sood
Mounting clinical and preclinical evidence supports a key role for sustained adrenergic signaling in the tumor microenvironment as a driver of tumor growth and progression. However, the mechanisms by which adrenergic neurotransmitters are delivered to the tumor microenvironment are not well understood. Here we present evidence for a feedforward loop whereby adrenergic signaling leads to increased tumoral innervation. In response to catecholamines, tumor cells produced brain-derived neurotrophic factor (BDNF) in an ADRB3/cAMP/Epac/JNK-dependent manner...
April 16, 2018: Cancer Research
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