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tumor associated macrophages

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https://www.readbyqxmd.com/read/29776955/high-fat-diet-induced-inflammation-accelerates-prostate-cancer-growth-via-il6-signaling
#1
Takuji Hayashi, Kazutoshi Fujita, Satoshi Nojima, Yujiro Hayashi, Kosuke Nakano, Yu Ishizuya, Cong Wang, Yoshiyuki Yamamoto, Toshiro Kinouchi, Kyosuke Matsuzaki, Kentaro Jingushi, Taigo Kato, Atsunari Kawashima, Akira Nagahara, Takeshi Ujike, Motohide Uemura, Maria Del Carmen Rodriguez Pena, Jennifer B Gordetsky, Eiichi Morii, Kazutake Tsujikawa, George J Netto, Norio Nonomura
OBJECTIVE: High-fat diet (HFD) could induce prostate cancer progression. The aim of this study is to identify mechanisms of HFD-induced prostate cancer progression, focusing on inflammation. MATERIALS AND METHODS: We administered HFD and celecoxib to autochthonous immunocompetent Pb-Cre+; Pten(fl/fl) model mice for prostate cancer. Tumor growth was evaluated by tumor weight and Ki67 stain, and local immune cells were assessed by flow cytometry at 22 weeks of age...
May 18, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29775390/polarization-and-distribution-of-tumor-associated-macrophages-and-cox-2-expression-in-basal-cell-carcinoma-of-the-ocular-adnexae
#2
Ute Kaiser, Karin U Loeffler, Jennifer Nadal, Frank G Holz, Martina C Herwig-Carl
PURPOSE: Basal cell carcinoma (BCC) is a locally invasive skin tumor which can be subdivided into a circumscribed nodular and an invasive fibrosing subtype. There is increasing evidence that macrophages play an important role in interacting between tumor cells and their microenvironment, thereby affecting not only the invasive potential but also the patients' prognosis. Thus, we wanted to compare these two BCC variants with regard to tumor-related inflammation, COX-2 expression, distribution and polarization of tumor-associated macrophages...
May 18, 2018: Current Eye Research
https://www.readbyqxmd.com/read/29774034/targeting-vegf-vegfr-to-modulate-antitumor-immunity
#3
REVIEW
Ju Yang, Jing Yan, Baorui Liu
In addition to the crucial role in promoting the growth of tumor vessels, vascular endothelial growth factor (VEGF) is also immunosuppressive. VEGF can inhibit the function of T cells, increase the recruitment of regulatory T cells (Tregs) and myeloid-derived suppressor cells (MDSCs), and hinder the differentiation and activation of dendritic cells (DCs). Recent studies have investigated the role of antiangiogenic agents in antitumor immunity, especially in recent 3 years. Therefore, it is necessary to update the role of targeting VEGF/VEGFR in antitumor immunity...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29773427/microphthalmia-associated-transcription-factor-mitf-promiscuous-staining-patterns-in-fibrohistiocytic-lesions-is-a-potential-pitfall
#4
Sambit K Mohanty, Shivani Sharma, Dinesh Pradhan, Shivani R Kandukuri, Navid Farahani, Catherine Barry, Julie M Wu, David Frishberg, Bonnie Balzer
Microphthalmia-associated transcription factor (MiTF) is used as a marker of melanocytic differentiation. However, MiTF immunoexpression has also been observed in histiocytes, macrophages, smooth muscle cells and fibroblasts, which raise the concern of fibrohistiocytic (FH) lesions being misdiagnosed as melanoma based on MiTF immunoreactivity. MiTF has been known to be positive in FH tumors, but this is the first study evaluating ninety-three fibrohistiocytic neoplasms to understand and delineate the staining pattern of MiTF in these tumors...
May 11, 2018: Pathology, Research and Practice
https://www.readbyqxmd.com/read/29772024/use-of-human-amniotic-epithelial-cells-in-mouse-models-of-bleomycin-induced-lung-fibrosis-a-systematic-review-and-meta-analysis
#5
Fang He, Aiting Zhou, Shuo Feng
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) urgently requires effective treatment. Bleomycin-induced lung injury models are characterized by initial inflammation and secondary fibrosis, consistent with the pathological features of IPF. Human amniotic epithelial cells (hAECs) exhibit good differentiation potential and paracrine activity and are thus ideal for cell-based clinical therapies. The therapeutic effects of hAECs on lung fibrosis are attributed to many factors. We performed a systematic review of preclinical studies investigating the treatment of pulmonary fibrosis with hAECs to provide suggestions for their clinical use...
2018: PloS One
https://www.readbyqxmd.com/read/29771686/spleen-mediates-a-distinct-hematopoietic-progenitor-response-supporting-tumor-promoting-myelopoiesis
#6
Chong Wu, Huiheng Ning, Mingyu Liu, Jie Lin, Shufeng Luo, Wenjie Zhu, Jing Xu, Wen-Chao Wu, Jing Liang, Chun-Kui Shao, Jiaqi Ren, Bin Wei, Jun Cui, Min-Shan Chen, Limin Zheng
Cancer progression is associated with alterations of intra- and extramedullary hematopoiesis to support a systemic tumor-promoting myeloid response. However, the functional specialty, mechanism, and clinical relevance of extramedullary hematopoiesis (EMH) remain unclear. Here we showed that the heightened splenic myelopoiesis in tumor-bearing hosts was not only characterized by the accumulation of myeloid precursors, but also associated with profound functional alterations of splenic early hematopoietic stem/progenitor cells (HSPCs)...
May 17, 2018: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29770915/cytolytic-activity-score-to-assess-anticancer-immunity-in-colorectal-cancer
#7
Sumana Narayanan, Tsutomu Kawaguchi, Li Yan, Xuan Peng, Qianya Qi, Kazuaki Takabe
BACKGROUND: Elevated tumor-infiltrating lymphocytes (TILs) within the tumor microenvironment is a known positive prognostic factor in colorectal cancer (CRC). We hypothesized that since cytotoxic T cells release cytolytic proteins such as perforin (PRF1) and pro-apoptotic granzymes (GZMA) to attack cancer cells, a cytolytic activity score (CYT) would be a useful tool to assess anticancer immunity. METHODS: Genomic expression data were obtained from 456 patients from The Cancer Genome Atlas (TCGA)...
May 16, 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29770354/3d-co-culture-system-of-tumor-associated-macrophages-and-ovarian-cancer-cells
#8
Lingli Long, Mingzhu Yin, Wang Min
Ovarian cancer is fairly unique in that ovarian carcinoma cells can detach and spread directly through peritoneal cavity. It has been unclear, however, how detached cancer cells survive in the peritoneum and form spheroid structure. We have recently reported that there is a strong correlation between Tumor-associated macrophages (TAMs)-associated spheroid and clinical pathology of ovarian cancer, and that TAMs promote spheroid formation and tumor growth at early stages of transcoelomic metastasis in orthotopic mouse models...
April 20, 2018: Bio-protocol
https://www.readbyqxmd.com/read/29769439/csf1r-dependent-myeloid-cells-are-required-for-nk%C3%A2-mediated-control-of-metastasis
#9
Michal Beffinger, Paulino Tallón de Lara, Sònia Tugues, Marijne Vermeer, Yannick Montagnolo, Isabel Ohs, Virginia Cecconi, Giulia Lucchiari, Aron Gagliardi, Nikola Misljencevic, James Sutton, Roman Spörri, Burkhard Becher, Anurag Gupta, Maries van den Broek
Myeloid leukocytes are essentially involved in both tumor progression and control. We show that neo-adjuvant treatment of mice with an inhibitor of CSF1 receptor (CSF1R), a drug that is used to deplete tumor-associated macrophages, unexpectedly promoted metastasis. CSF1R blockade indirectly diminished the number of NK cells due to a paucity of myeloid cells that provide the survival factor IL-15 to NK cells. Reduction of the number of NK cells resulted in increased seeding of metastatic tumor cells to the lungs but did not impact on progression of established metastases...
May 17, 2018: JCI Insight
https://www.readbyqxmd.com/read/29769377/-ex-vivo-cytokine-release-determined-by-a-multiplex-cytokine-assay-in-response-to-coccidioidal-antigen-stimulation-of-whole-blood-among-subjects-with-recently-diagnosed-primary-pulmonary-coccidioidomycosis
#10
Neil M Ampel, Ian Robey, Chinh T Nguyen, Brentin Roller, Jessica August, Kenneth S Knox, Demosthenes Pappagianis
The elements of the cellular immune response in human coccidioidomycosis remain undefined. We examined the ex vivo release of an array of inflammatory proteins in response to incubation with a coccidioidal antigen preparation to ascertain which of these might be associated with diagnosis and outcome. Patients with a recent diagnosis of primary pulmonary coccidioidomycosis and a control group of healthy subjects were studied. Blood samples were incubated for 18 h with T27K, a soluble coccidioidal preparation containing multiple glycosylated antigens, and the supernatant was assayed for inflammatory proteins using the multiplex Luminex system...
June 27, 2018: MSphere
https://www.readbyqxmd.com/read/29767793/inhalation-of-house-dust-and-ozone-alters-systemic-levels-of-endothelial-progenitor-cells-oxidative-stress-and-inflammation-in-elderly-subjects
#11
Kim Jantzen, Annie Jensen, Ali Kermanizadeh, Grethe Elholm, Torben Sigsgaard, Peter Møller, Martin Roursgaard, Steffen Loft
Ambient air pollution including ozone and especially particulate matter represents important causes of cardiovascular disease. However, there is limited knowledge on indoor air dust with respect to this risk and the potential interactions between dust and ozone. Here, we exposed 23 healthy elderly subjects for 5.5 h, to either clean air, house dust at 275 µg/m3 (diameter < 2.5 µm), ozone at 100 ppb or combined house dust and ozone in a double-blinded randomized cross-over study. The combined house dust and ozone exposure was associated with a 48% (95% CI 24%-65%) decrease as compared with the clean air exposure, in CD34+KDR+ late endothelial progenitor cells (EPCs) per leukocyte in the blood shortly after exposure, whereas none of the single exposures resulted in a significant effect...
May 14, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29767307/virus-vector-mediated-genetic-modification-of-brain-tumor-stromal-cells-after-intravenous-delivery
#12
Adrienn Volak, Stanley G LeRoy, Jeya Shree Natasan, David J Park, Pike See Cheah, Andreas Maus, Zachary Fitzpatrick, Eloise Hudry, Kelsey Pinkham, Sheetal Gandhi, Bradley T Hyman, Dakai Mu, Dwijit GuhaSarkar, Anat O Stemmer-Rachamimov, Miguel Sena-Esteves, Christian E Badr, Casey A Maguire
The malignant primary brain tumor, glioblastoma (GBM) is generally incurable. New approaches are desperately needed. Adeno-associated virus (AAV) vector-mediated delivery of anti-tumor transgenes is a promising strategy, however direct injection leads to focal transgene spread in tumor and rapid tumor division dilutes out the extra-chromosomal AAV genome, limiting duration of transgene expression. Intravenous (IV) injection gives widespread distribution of AAV in normal brain, however poor transgene expression in tumor, and high expression in non-target cells which may lead to ineffective therapy and high toxicity, respectively...
May 16, 2018: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/29765083/adeno-associated-virus-vector-mediated-interleukin-10-induction-prevents-vascular-inflammation-in-a-murine-model-of-kawasaki-disease
#13
Jun Nakamura, Sachiko Watanabe, Hiroaki Kimura, Motoi Kobayashi, Tadayoshi Karasawa, Ryo Kamata, Fumitake Usui-Kawanishi, Ai Sadatomo, Hiroaki Mizukami, Noriko Nagi-Miura, Naohito Ohno, Tadashi Kasahara, Seiji Minota, Masafumi Takahashi
Kawasaki disease (KD), which is the leading cause of pediatric heart disease, is characterized by coronary vasculitis and subsequent aneurysm formation. Although intravenous immunoglobulin therapy is effective for reducing aneurysm formation, a certain number of patients are resistant to this therapy. Because interleukin-10 (IL-10) was identified as a negative regulator of cardiac inflammation in a murine model of KD induced by Candida albicans water-soluble fraction (CAWS), we investigated the effect of IL-10 supplementation in CAWS-induced vasculitis...
May 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29764866/lrrc15-is-a-novel-mesenchymal-protein-and-stromal-target-for-antibody-drug-conjugates
#14
James W Purcell, Sonia G Tanlimco, Jonathan A Hickson, Melvin Fox, Mien Sho, Lisa Durkin, Tamar Uziel, Rick Powers, Kelly D Foster-Duke, Thomas McGonigal, Subashri Kumar, Josue Samayoa, Dong Zhang, Joann P Palma, Sasmita Mishra, Diane Hollenbaugh, Kurt Gish, Susan E Morgan-Lappe, Eric D Hsi, Debra T Chao
Progress in understanding tumor stromal biology has been constrained in part because cancer-associated fibroblasts (CAF) are a heterogeneous population with limited cell type-specific protein markers. Using RNA expression profiling, we identified the membrane protein leucine rich repeat containing 15 (LRRC15) as highly expressed in multiple solid tumor indications with limited normal tissue expression. LRRC15 was expressed on stromal fibroblasts in many solid tumors (e.g., breast, head and neck, lung, pancreatic) as well as directly on a subset of cancer cells of mesenchymal origin (e...
May 15, 2018: Cancer Research
https://www.readbyqxmd.com/read/29764855/magnetic-resonance-imaging-of-tumor-associated-macrophages-clinical-translation
#15
Maryam Aghighi, Ashok Joseph Theruvath, Anuj Pareek, Laura Pisani, Raphael Alford, Anne Monika Muehe, Tarsheen K Sethi, Samantha J Holdsworth, Florette K Hazard, Dita Gratzinger, Sandra Luna-Fineman, Ranjana H Advani, Sheri L Spunt, Heike E Daldrup-Link
PURPOSE: Tumor associated macrophages (TAM) in malignant tumors have been linked to tumor aggressiveness and represent a new target for cancer immunotherapy. As new TAM-targeted immunotherapies are entering clinical trials, it is important to detect and quantify TAM with non-invasive imaging techniques. The purpose of this study was to determine if ferumoxytol-enhanced MRI can detect TAM in lymphomas and bone sarcomas of pediatric patients and young adults. EXPERIMENTAL DESIGN: In a first-in-patient , IRB-approved prospective clinical trial, 25 pediatric and young adult patients with lymphoma or bone sarcoma underwent ferumoxytol-enhanced MRI...
May 15, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29764444/molecular-and-clinical-characterization-of-ptpn2-expression-from-rna-seq-data-of-996-brain-gliomas
#16
Peng-Fei Wang, Hong-Qing Cai, Chuan-Bao Zhang, Yan-Michael Li, Xiang Liu, Jing-Hai Wan, Tao Jiang, Shou-Wei Li, Chang-Xiang Yan
BACKGROUND: Immune checkpoint inhibitors have been shown to promote antitumor immunity and achieve durable tumor remissions. However, certain tumors are refractory to current immunotherapy. These negative results encouraged us to uncover other therapeutic targets and strategies. PTPN2 (protein tyrosine phosphatase, non-receptor type 2) has been newly identified as an immunotherapy target. Loss of PTPN2 sensitizes the tumor to immunotherapy via IFNγ signaling. METHODS: Here, we investigated the relationship between PTPN2 mRNA levels and clinical characteristics in gliomas...
May 15, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29761392/phenotyping-tumor-associated-macrophages
#17
R Ian Cumming, Yen-Rei A Yu
Multi-parametric flow cytometry of tumor-bearing murine nonlymphoid tissue allows for characterization, isolation, and examination of immune cell composition, phenotype, and function. Here we describe an approach to process nonlymphoid tissues and then utilize a base antibody panel to define all of the major immune cell types in a single staining condition. This panel can be used to phenotype tumor-associated macrophages.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29757143/tumor-derived-csf-1-induces-the-nkg2d-ligand-rae-1%C3%AE-on-tumor-infiltrating-macrophages
#18
Thornton W Thompson, Benjamin T Jackson, P Jonathan Li, Jiaxi Wang, Alexander Byungsuk Kim, Kristen Ting Hui Huang, Lily Zhang, David H Raulet
NKG2D is an important immunoreceptor expressed on the surface of NK cells and some T cells. NKG2D recognizes a set of ligands typically expressed on infected or transformed cells, but recent studies have also documented NKG2D ligands on subsets of host non-tumor cells in tumor-bearing animals and humans. Here we show that in transplanted tumors and genetically engineered mouse cancer models, tumor-associated macrophages are induced to express the NKG2D ligand RAE-1δ. We find that a soluble factor produced by tumor cells is responsible for macrophage RAE-1δ induction, and we identify tumor-derived colony-stimulating factor-1 (CSF-1) as necessary and sufficient for macrophage RAE-1δ induction in vitro and in vivo ...
May 14, 2018: ELife
https://www.readbyqxmd.com/read/29756386/kras-mutation-and-epithelial-macrophage-interplay-in-pancreatic-neoplastic-transformation
#19
Faraz Bishehsari, Lijuan Zhang, Usman Barlass, Nailliw Preite, Sanja Turturro, Matthew S Najor, Brandon B Shetuni, Janet P Zayas, Mahboobeh Mahdavinia, Abde M Abukhdeir, Ali Keshavarzian
Pancreatic ductal adenocarcinoma (PDA) is characterized by epithelial mutations in KRAS and prominent tumor-associated inflammation, including macrophage infiltration. But knowledge of early interactions between neoplastic epithelium and macrophages in PDA carcinogenesis is limited. Using a pancreatic organoid model, we found that the expression of mutant KRAS in organoids increased i) ductal to acinar gene expression ratios, ii) epithelial cells proliferation, and iii) colony formation capacity in vitro, and endowed pancreatic cells with the ability to generate neoplastic tumors in vivo...
May 14, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29755698/epigenetic-control-of-macrophage-polarization-implications-for-targeting-tumor-associated-macrophages
#20
REVIEW
Amber E de Groot, Kenneth J Pienta
The progression of cancer is a result of not only the growth of the malignant cells but also the behavior of other components of the tumor microenvironment (TME). Tumor-associated macrophages (TAMs) are key components of the TME that influence tumor growth and disease progression. TAMs can either inhibit or support tumor growth depending on their polarization to classically-activated macrophages (M1s) or alternatively-activated macrophages (M2s), respectively. Epigenetic regulation plays a significant role in determining this polarization and manipulating the epigenetic regulation in macrophages would provide a means for selectively targeting M2s thereby eliminating tumor-supporting TAMs while sparing tumor-inhibiting M1 TAMs...
April 17, 2018: Oncotarget
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