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https://www.readbyqxmd.com/read/27910857/myeloid-derived-suppressor-cells-and-their-role-in-pancreatic-cancer
#1
REVIEW
M Pergamo, G Miller
Pancreatic cancer is a devastating disease and ranks as the third most common cause of cancer-related death. Like many cancers, there has been increased interest in the role of the immune system in the progression and development of pancreatic cancer. In particular, immunosuppression within the tumor microenvironment (TME) is thought to impair the host's antitumor response. In this article, we review myeloid-derived suppressor cells and their contribution to this immunosuppression within the pancreatic TME...
December 2, 2016: Cancer Gene Therapy
https://www.readbyqxmd.com/read/27908931/filling-the-tank-keeping-antitumor-t-cells-metabolically-fit-for-the-long-haul
#2
REVIEW
Greg M Delgoffe
Discoveries in tumor immunology and subsequent clinical advances in cancer immunotherapy have revealed that the immune system is not oblivious to tumor progression but heavily interacts with developing neoplasia and malignancy. A major factor preventing immune destruction is the establishment of a highly immunosuppressive tumor microenvironment (TME), which provides architecture to the tumor, supports indirect means of immunosuppression such as the recruitment of tolerogenic cells like regulatory T cells and myeloid-derived suppressor cells (MDSC), and represents a zone of metabolically dearth conditions...
December 2016: Cancer Immunology Research
https://www.readbyqxmd.com/read/27903981/nurse-like-cells-promote-cll-survival-through-lfa-3-cd2-interactions
#3
Frédéric Boissard, Marie Tosolini, Laetitia Ligat, Anne Quillet-Mary, Frederic Lopez, Jean-Jacques Fournié, Loic Ysebaert, Mary Poupot
In the tumoral micro-environment (TME) of chronic lymphocytic leukemia (CLL), nurse-like cells (NLC) are tumor-associated macrophages which play a critical role in the survival and chemoresistance of tumoral cells. This pro-survival activity is known to involve soluble factors, but few data are available on the relative role of cells cross-talk. Here, we used a transcriptome-based approach to systematically investigate the expression of various receptor/ligand pairs at the surface of NLC/CLL cells. Their relative contribution to CLL survival was assessed both by fluorescent microscopy to identify cellular interactions and by the use of functional tests to measure the impact of uncoupling these pairs with blocking monoclonal antibodies...
November 26, 2016: Oncotarget
https://www.readbyqxmd.com/read/27899275/immunological-consequences-of-immunization-with-tumor-lysate-vaccine-and-propranolol-as-an-adjuvant-a-study-on-cytokine-profiles-in-breast-tumor-microenvironment
#4
Somayeh Ashrafi, Reza Shapouri, Mehdi Mahdavi
In this study, we sought out to study the anti-cancer effects of propranolol (Pro) in combination with tumor lysate vaccine on lymphocyte proliferation activities as well as on IL-2, IL-4, IL-10, IL-12, IL-17 and IFN-γ cytokine concentration in the tumor microenvironment (TME). A tumor model was established in inbred Balb/C mice using transplantation of tumor to the flank of native mice. Tumor-bearing mice were immunized with lysate tumor cells (vaccine), a combination of Pro/Vaccine (Vac). Control groups consisted of tumor-bearing mice receiving only propranolol or PBS three times with one week interval via subcutaneous (s...
November 26, 2016: Immunology Letters
https://www.readbyqxmd.com/read/27893653/adjuvant-radiotherapy-for-the-treatment-of-stage-iv-rectal-cancer-after-curative-resection-a-propensity-score-matched-analysis-and-meta-analysis
#5
Min Jung Kim, Sang Jin Kim, Sung-Chan Park, Dae Yong Kim, Ji Won Park, Seung-Bum Ryoo, Seung-Yong Jeong, Kyu Joo Park, Heung Kwon Oh, Duck-Woo Kim, Sung-Bum Kang, Jung Nam Joo, Jae Hwan Oh
The role of pelvic radiotherapy (RT) in stage IV rectal cancer with total mesorectal excision (TME) has not been defined. We evaluated the impact of RT on oncologic outcomes among patients with stage IV rectal cancer who underwent TME and performed a meta-analysis of published studies.The records of stage IV rectal cancer patients who underwent TME between August 2001 and December 2011 were reviewed. Patients who received pelvic RT (RT group) and those who did not (non-RT group) were matched using a propensity score...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27892764/stat3-mediated-smad3-activation-underlies-oncostatin-m-induced-senescence
#6
Benjamin L Bryson, Damian J Junk, Rocky Cipriano, Mark W Jackson
Cytokines in the developing tumor microenvironment (TME) can drive transformation and subsequent progression towards metastasis. Elevated levels of the Interleukin-6 (IL-6) family cytokine Oncostatin M (OSM) in the breast TME correlate with aggressive, metastatic cancers, increased tumor recurrence, and poor patient prognosis. Paradoxically, OSM engages a tumor-suppressive, Signal Transducer and Activator of Transcription 3 (STAT3)-dependent senescence response in normal and non-transformed human mammary epithelial cells (HMEC)...
November 28, 2016: Cell Cycle
https://www.readbyqxmd.com/read/27886277/a-retrospective-analysis-on-two-week-short-course-pre-operative-radiotherapy-in-elderly-patients-with-resectable-locally-advanced-rectal-cancer
#7
Chen Shi, Hao Zhou, Xiaofan Li, Yong Cai
To validate that a two-week short-course pre-operative radiotherapy regimen is feasible, safe, and effective for the management of elderly patients with locally advanced rectal cancer (LARC), we retrospectively analyzed 99 radiotherapy-naive patients ≥70 years of age with LARC. Patients received pelvic radiation therapy (3D-CRT 30Gy/10f/2w) followed by TME surgery; some patients received adjuvant chemotherapy. The primary endpoint was OS, while the secondary endpoints were DFS, safety and response rate. The median follow-up time was 5...
November 25, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27885479/wait-and-see-approach-for-rectal-cancer-with-a-clinically-complete-response-after-neoadjuvant-concurrent-chemoradiotherapy
#8
Hyun Jung Kim, Jin Ho Song, Hyeong Sik Ahn, Bong-Hoi Choi, Hojin Jeong, Hoon Sik Choi, Yun Hee Lee, Ki Mun Kang, Bae Kwon Jeong
PURPOSE: Rectal cancer patients with a pathological complete response (pCR) after neoadjuvant concurrent chemoradiotherapy (CCRT) have a better prognosis compared to those without a pCR. Therefore, the "Wait and See" (W&S) approach in those who achieved clinically complete response (cCR) after CCRT was introduced as an alternative modality to the total mesorectal excision (TME). The aim of this study was to compare the oncological outcomes between W&S and TME via meta-analysis. METHODS: We performed a comprehensive literature search on January 14, 2016, using MEDLINE, EMBASE, the Cochrane Central Register of Controlled Trials, Web of Science, and Scopus...
November 24, 2016: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/27884204/lateral-pelvic-lymph-node-dissection-after-neoadjuvant-chemo-radiation-for-preoperative-enlarged-lateral-nodes-in-advanced-low-rectal-cancer-study-protocol-for-a-randomized-controlled-trial
#9
Mingtian Wei, Qingbin Wu, Chuanwen Fan, Yan Li, Xiangzheng Chen, Zongguang Zhou, Junhong Han, Ziqiang Wang
BACKGROUND: Lateral lymph node (LLN) metastasis is a major cause of local recurrence of advanced rectal cancer. Although there is much controversy between Western and Eastern countries on whether lateral pelvic lymph node dissection (LLND) or neoadjuvant chemo-radiation (nCRT) is preferable for the treatment of LLN metastases, existing retrospective cohorts mainly focus on all middle/low advanced rectal cancer patients, not the specific individuals with suspicion of LLN metastases. The aim of this trial is to assess the efficacy and safety of LLND for rectal cancer patients with suspicion of LLN metastases...
November 25, 2016: Trials
https://www.readbyqxmd.com/read/27882334/crosstalk-between-innate-lymphoid-cells-and-other-immune-cells-in-the-tumor-microenvironment
#10
REVIEW
Fabian Flores-Borja, Sheeba Irshad, Peter Gordon, Felix Wong, Ibrahim Sheriff, Andrew Tutt, Tony Ng
Our knowledge and understanding of the tumor microenvironment (TME) have been recently expanded with the recognition of the important role of innate lymphoid cells (ILC). Three different groups of ILC have been described based on their ability to produce cytokines that mediate the interactions between innate and adaptive immune cells in a variety of immune responses in infection, allergy, and autoimmunity. However, recent evidence from experimental models and clinical studies has demonstrated that ILC contribute to the mechanisms that generate suppressive or tolerant environments that allow tumor regression or progression...
2016: Journal of Immunology Research
https://www.readbyqxmd.com/read/27872688/functional-roles-for-exosomal-micrornas-in-the-tumour-microenvironment
#11
REVIEW
Emma Bell, Molly A Taylor
Extracellular microRNAs are released from cells both passively and actively. The presence of these microRNAs in the tumour microenvironment (TME) can significantly impact on the plasticity of cancer cells leading to the promotion of metastatic and angiogenic processes. These extracellular microRNAs can act not only on other cancer cells, but also cells present in the TME, such as immune cells, endothelial cells, fibroblasts, and others acting to subvert the host immune system and drive tumour progression. In this review we highlight the current understanding of both the mechanisms by which microRNAs are released from tumour cells and the downstream functional effects that extracellular microRNAs have on recipient cells...
2017: Computational and Structural Biotechnology Journal
https://www.readbyqxmd.com/read/27869779/immunomodulatory-function-of-the-tumor-suppressor-p53-in-host-immune-response-and-the-tumor-microenvironment
#12
REVIEW
Yan Cui, Gang Guo
The tumor suppressor p53 is the most frequently mutated gene in human cancers. Most of the mutations are missense leading to loss of p53 function in inducing apoptosis and senescence. In addition to these autonomous effects of p53 inactivation/dysfunction on tumorigenesis, compelling evidence suggests that p53 mutation/inactivation also leads to gain-of-function or activation of non-autonomous pathways, which either directly or indirectly promote tumorigenesis. Experimental and clinical results suggest that p53 dysfunction fuels pro-tumor inflammation and serves as an immunological gain-of-function driver of tumorigenesis via skewing immune landscape of the tumor microenvironment (TME)...
November 19, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27864070/friend-or-foe-the-tumour-microenvironment-dilemma-in-colorectal-cancer
#13
REVIEW
Tommaso Colangelo, Giovanna Polcaro, Livio Muccillo, Giovanna D'Agostino, Valeria Rosato, Pamela Ziccardi, Angelo Lupo, Gianluigi Mazzoccoli, Lina Sabatino, Vittorio Colantuoni
The network of bidirectional homotypic and heterotypic interactions established among parenchymal tumour cells and surrounding mesenchymal stromal cells generates the tumour microenvironment (TME). These intricate crosstalks elicit both beneficial and adverse effects on tumour initiation and progression unbalancing the signals and responses from the neighbouring cells. Here, we highlight the structure, activities and evolution of TME cells considering a novel colorectal cancer (CRC) classification based on differential stromal composition and gene expression profiles...
November 16, 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27863995/tumor-targeted-delivery-of-sunitinib-base-enhances-vaccine-therapy-for-advanced-melanoma-by-remodeling-the-tumor-microenvironment
#14
Meirong Huo, Yan Zhao, Andrew Benson Satterlee, Yuhua Wang, Ying Xu, Leaf Huang
Development of an effective treatment against advanced tumors remains a major challenge for cancer immunotherapy. We have previously developed a potent mannose-modified lipid calcium phosphate (LCP) nanoparticle (NP)-based Trp2 vaccine for melanoma therapy, but because this vaccine can induce a potent anti-tumor immune response only during the early stages of melanoma, poor tumor growth inhibition has been observed in more advanced melanoma models, likely due to the development of an immune-suppressive tumor microenvironment (TME)...
November 15, 2016: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/27853973/clinical-outcomes-and-case-volume-effect-of-transanal-total-mesorectal-excision-for-rectal-cancer-a-systematic-review
#15
REVIEW
C L Deijen, A Tsai, T W A Koedam, M Veltcamp Helbach, C Sietses, A M Lacy, H J Bonjer, J B Tuynman
Transanal total mesorectal excision (TaTME) has been developed to improve quality of TME for patients with mid and low rectal cancer. However, despite enthusiastic uptake and teaching facilities, concern exists for safe introduction. TaTME is a complex procedure and potentially a learning curve will hamper clinical outcome. With this systematic review, we aim to provide data regarding morbidity and safety of TaTME. A systematic literature search was performed in MEDLINE (PubMed), EMBASE (Ovid) and Cochrane Library...
November 16, 2016: Techniques in Coloproctology
https://www.readbyqxmd.com/read/27846884/future-perspectives-in-melanoma-research-meeting-report-from-the-melanoma-bridge-napoli-december-1st-4th-2015
#16
Paolo A Ascierto, Sanjiv Agarwala, Gerardo Botti, Alessandra Cesano, Gennaro Ciliberto, Michael A Davies, Sandra Demaria, Reinhard Dummer, Alexander M Eggermont, Soldano Ferrone, Yang Xin Fu, Thomas F Gajewski, Claus Garbe, Veronica Huber, Samir Khleif, Michael Krauthammer, Roger S Lo, Giuseppe Masucci, Giuseppe Palmieri, Michael Postow, Igor Puzanov, Ann Silk, Stefani Spranger, David F Stroncek, Ahmad Tarhini, Janis M Taube, Alessandro Testori, Ena Wang, Jennifer A Wargo, Cassian Yee, Hassane Zarour, Laurence Zitvogel, Bernard A Fox, Nicola Mozzillo, Francesco M Marincola, Magdalena Thurin
The sixth "Melanoma Bridge Meeting" took place in Naples, Italy, December 1st-4th, 2015. The four sessions at this meeting were focused on: (1) molecular and immune advances; (2) combination therapies; (3) news in immunotherapy; and 4) tumor microenvironment and biomarkers. Recent advances in tumor biology and immunology has led to the development of new targeted and immunotherapeutic agents that prolong progression-free survival (PFS) and overall survival (OS) of cancer patients. Immunotherapies in particular have emerged as highly successful approaches to treat patients with cancer including melanoma, non-small cell lung cancer (NSCLC), renal cell carcinoma (RCC), bladder cancer, and Hodgkin's disease...
November 15, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27835603/microenvironmental-networks-promote-tumor-heterogeneity-and-enrich-for-metastatic-cancer-stem-like-cells-in-luminal-a-breast-tumor-cells
#17
Polina Weitzenfeld, Tsipi Meshel, Adit Ben-Baruch
The roles of the tumor microenvironment (TME) in generating intra-tumoral diversity within each specific breast cancer subtype are far from being fully elucidated. In this study, we exposed Luminal-A breast cancer cells in culture to combined "TME Stimulation", representing three typical arms of the breast TME: hormonal (estrogen), inflammatory (tumor necrosis factor α) and growth-promoting (epidermal growth factor). In addition to enriching the tumor cell population with CD44+/β1+ cells (as we previously published), TME Stimulation selected for CD44+/CD24low/- stem-like cells, that were further enriched by doxorubicin treatment and demonstrated high plasticity in vitro and in vivo...
November 8, 2016: Oncotarget
https://www.readbyqxmd.com/read/27830368/adjuvant-treatment-for-resected-rectal-cancer-impact-of-standard-and-intensified-postoperative-chemotherapy-on-disease-free-survival-in-patients-undergoing-preoperative-chemoradiation-a-propensity-score-matched-analysis-of-an-observational-database
#18
Benjamin Garlipp, Henry Ptok, Frank Benedix, Ronny Otto, Felix Popp, Karsten Ridwelski, Ingo Gastinger, Christoph Benckert, Hans Lippert, Christiane Bruns
AIMS: Adjuvant chemotherapy for resected rectal cancer is widely used. However, studies on adjuvant treatment following neoadjuvant chemoradiotherapy (CRT) and total mesorectal excision (TME) have yielded conflicting results. Recent studies have focused on adding oxaliplatin to both preoperative and postoperative therapy, making it difficult to assess the impact of adjuvant oxaliplatin alone. This study was aimed at determining the impact of (i) any adjuvant treatment and (ii) oxaliplatin-containing adjuvant treatment on disease-free survival in CRT-pretreated, R0-resected rectal cancer patients...
November 9, 2016: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/27829138/targeting-stromal-glutamine-synthetase-in-tumors-disrupts-tumor-microenvironment-regulated-cancer-cell-growth
#19
Lifeng Yang, Abhinav Achreja, Tsz-Lun Yeung, Lingegowda S Mangala, Dahai Jiang, Cecil Han, Joelle Baddour, Juan C Marini, Joseph Ni, Ryuichi Nakahara, Stephen Wahlig, Lisa Chiba, Sun Hye Kim, Joshua Morse, Sunila Pradeep, Archana Sidalaghatta Nagaraja, Monika Haemmerle, Noh Kyunghee, Mathew Derichsweiler, Thomas Plackemeier, Imelda Mercado-Uribe, Gabriel Lopez-Berestein, Tyler Moss, Prahlad T Ram, Jinsong Liu, Xiongbin Lu, Samuel C Mok, Anil K Sood, Deepak Nagrath
Reactive stromal cells are an integral part of tumor microenvironment (TME) and interact with cancer cells to regulate their growth. Although targeting stromal cells could be a viable therapy to regulate the communication between TME and cancer cells, identification of stromal targets that make cancer cells vulnerable has remained challenging and elusive. Here, we identify a previously unrecognized mechanism whereby metabolism of reactive stromal cells is reprogrammed through an upregulated glutamine anabolic pathway...
November 8, 2016: Cell Metabolism
https://www.readbyqxmd.com/read/27823637/migration-of-dendritic-cells-to-the-lymph-nodes-and-its-enhancement-to-drive-anti-tumor-responses
#20
REVIEW
Narges Seyfizadeh, Ravikumar Muthuswamy, Duane A Mitchell, Stefan Nierkens, Nayer Seyfizadeh
Better prognoses associated with increased T cell infiltration of tumors, as seen with chimeric antigen receptor (CAR) T cell therapies and immune checkpoint inhibitors, portray the importance and potential of the immune system in controlling tumors. This has rejuvenated the field of cancer immunotherapy leading to an increasing number of immunotherapies developed for cancer patients. Dendritic Cells (DCs) vaccines represent an appealing option for cancer immunotherapy since DCs have the ability to circumvent tolerance to tumors by its adjuvant properties and to induce memory T cells that can become persistent after initial tumor clearance to engage potential metastatic tumors...
November 2016: Critical Reviews in Oncology/hematology
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