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Tumor infiltrating neutrophils

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https://www.readbyqxmd.com/read/27878284/antitumor-effect-of-the-combination-of-manumycin%C3%A2-a-and-immodin-is-associated-with-antiplatelet-activity-and-increased-granulocyte-tumor-infiltration-in-a-4t1-breast-tumor-model
#1
Peter Solár, Veronika Sačková, Gabriela Hrčková, Vlasta Demečková, Monika Kassayová, Bianka Bojková, Dagmar Mudroňová, Soňa Gancarčíková, Rastislav Jendželovský, Peter Fedoročko
Manumycin A is a natural antibiotic isolated from Streptomyces parvulus with broad range of biological activities including antineoplastic activity in several in vitro and in vivo cancer models. Immodin [dialyzable leukocyte extract (DLE)] is a dialysate released from disintegrated blood leukocytes of healthy donors which exerts immunonormalizing effects on cell-mediated immune responses. The aim of the present study was to explore the antitumor potential of the combination of manumycin A and Immodin in an experimental breast cancer model...
November 22, 2016: Oncology Reports
https://www.readbyqxmd.com/read/27876058/a-novel-non-hodgkin-lymphoma-murine-model-closer-to-the-standard-clinical-scenario
#2
Thais Bascuas, María Moreno, Amy Mónaco, Laura Reyes, Andrea Paolino, Patricia Oliver, María G Kramer, Henry Engler, José P Pacheco, Sofía Grille, José A Chabalgoity
BACKGROUND: Non-Hodgkin lymphomas (NHL) are the most frequent hemato-oncological malignancies. Despite recent major advances in treatment, a substantial proportion of patients relapses highlighting the need for new therapeutic modalities. Promissory results obtained in pre-clinical studies are usually not translated when moving into clinical trials. Pre-clinical studies are mainly conducted in animals with high tumor burden; instead patients undergo chemotherapy as first line of treatment and most likely are under remission when immunotherapies are applied...
November 22, 2016: Journal of Translational Medicine
https://www.readbyqxmd.com/read/27866157/loss-of-free-fatty-acid-receptor-2-enhances-colonic-adenoma-development-and-reduces-the-chemopreventive-effects-of-black-raspberries-in-apcmin-mice
#3
Pan Pan, Chad W Skaer, Hsin-Tzu Wang, Kiyoko Oshima, Yi-Wen Huang, Jianhua Yu, Jianying Zhang, Martha Yearsley, Kimberle Agle, William Drobyski, Xiao Chen, Li-Shu Wang
We previously showed that black raspberries (BRBs) have beneficial effects in human colorectal cancer and a mouse model of colorectal cancer (Apc(Min/+)). The current study investigated the role of free fatty acid receptor 2 (FFAR2) in colon carcinogenesis and whether the FFAR2 signaling pathway contributes to BRB-mediated chemoprevention in mice. FFAR2 (also named GPR43) is a member of the G-protein-coupled receptor family that is expressed in leukocytes and colon. Apc(Min/+) and Apc(Min/+)-FFAR2(-/-) mice were given a control diet or the control diet supplemented with 5% BRBs for 8 weeks...
November 19, 2016: Carcinogenesis
https://www.readbyqxmd.com/read/27863478/prognostic-value-of-cd66b-positive-tumor-infiltrating-neutrophils-in-testicular-germ-cell-tumor
#4
Yuta Yamada, Tohru Nakagawa, Toru Sugihara, Takamasa Horiuchi, Uran Yoshizaki, Tetsuya Fujimura, Hiroshi Fukuhara, Tomohiko Urano, Kenichi Takayama, Satoshi Inoue, Haruki Kume, Yukio Homma
BACKGROUND: Prognostic value of immune cells is not clear in testicular germ cell tumors (TGCTs). We aimed to investigate the prognostic value of tumor-infiltrating neutrophils in TGCTs. METHODS: A total of 102 patients who underwent orchiectomy for TGCT were investigated for CD66b positive tumor-infiltrating neutrophils (CD66b + TINs). Immmunostaining for CD66b was performed in 102 sections as described. Clinicopathological parameters as well as cancer specific survival and overall survival were assessed for correlation with CD66b + TIN density...
November 18, 2016: BMC Cancer
https://www.readbyqxmd.com/read/27855848/transfusion-of-cd206-m2-macrophages-ameliorates-antibody-mediated-glomerulonephritis-in-mice
#5
Qiuna Du, Naotake Tsuboi, Yiqin Shi, Sachiko Ito, Yutaka Sugiyama, Kazuhiro Furuhashi, Nobuhide Endo, Hangsoo Kim, Takayuki Katsuno, Shin'ichi Akiyama, Seiichi Matsuo, Ken-Ichi Isobe, Shoichi Maruyama
Macrophages are multifunctional immune cells that may either drive or modulate disease pathogenesis, depending on the activated phenotype. In this study, we investigated the protective effects of CD206(+) M2 macrophages against nephrotoxic serum nephritis in mice. We found that these immunosuppressive macrophages, derived from bone marrow and stimulated with IL-4/IL-13 [CD206(+) M2 bone marrow-derived macrophages (M2BMMs)], protected against renal injury, decreased proteinuria, and diminished the infiltration of CD68(+) macrophages, neutrophils, and T cells into glomerular tissue...
November 11, 2016: American Journal of Pathology
https://www.readbyqxmd.com/read/27853643/peritumoral-stromal-neutrophils-are-essential-for-c-met-elicited-metastasis-in-human-hepatocellular-carcinoma
#6
Min He, Anping Peng, Xian-Zhang Huang, Dai-Chao Shi, Jun-Cheng Wang, Qiyi Zhao, Haibiao Lin, Dong-Ming Kuang, Pei-Feng Ke, Xiang-Ming Lao
Inflammation is a component of tumor progression mechanisms. Neutrophils are a common inflammatory infiltrate in many tumors, but their regulation and functions in neoplasia are not understood. Here, we showed, in detailed studies of c-Met molecule in 225 untreated patients with hepatocellular carcinoma (HCC), that high infiltration of neutrophils in HCC tissues determined malignant cell c-Met-associated clinical outcome of patients. High infiltration of neutrophils in HCCs determined malignant cell c-Met-associated clinical outcome of patients...
2016: Oncoimmunology
https://www.readbyqxmd.com/read/27851813/pld-specific-small-molecule-inhibitors-decrease-tumor-associated-macrophages-and-neutrophils-infiltration-in-breast-tumors-and-lung-and-liver-metastases
#7
Karen M Henkels, Naveen Reddy Muppani, Julian Gomez-Cambronero
Phospholipase D-2 (PLD2) has a key role in breast cancer formation and metastasis formation with PLD small inhibitors reducing primary tumor growth. This study aimed to evaluate the importance of targeting PLD on the tumor microenvironment. We provide evidence about the beneficial effect of PLD inhibitors [FIPI (dual PLD1/PLD2) or VU0155072-2 (PLD2 inhibitor)] on avoiding infiltration of tumor-helping macrophages and neutrophils. Tumor growth and metastasis within the primary tumors had low (<20% over controls) PLD enzyme activity...
2016: PloS One
https://www.readbyqxmd.com/read/27845385/cancer-derived-peptide-of-vacuolar-atpase-a2-isoform-promotes-neutrophil-migration-by-autocrine-secretion-of-il-8
#8
Safaa A Ibrahim, Arpita Kulshrestha, Gajendra K Katara, Magdy A Amin, Kenneth D Beaman
Neutrophils play significant regulatory roles within the tumor microenvironment by directly promoting tumor progression that leads to poor clinical outcomes. Identifying the tumor associated molecules that regulate neutrophil infiltration into tumors may provide new and specific therapeutic targets for cancer treatment. The a2-isoform of vacuolar ATPase (a2V) is uniquely and highly expressed on cancer cell plasma membrane. Cancer cells secrete a peptide from a2V (a2NTD) that promotes the pro-tumorigenic properties of neutrophils...
November 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27818230/effect-of-ppar-%C3%AE-%C3%AE-agonist-gw0742-treatment-in-the-acute-phase-response-and-blood-brain-barrier-permeability-following-brain-injury
#9
Khouloud Chehaibi, Laura le Maire, Sarah Bradoni, Joan Carles Escola, Francisco Blanco-Vaca, Mohamed Naceur Slimane
The systemic response to ischemic stroke is associated with the hepatic acute phase response (APR) that modulates leukocytes recruitment to the injured brain. The inappropriate recruitment of leukocytes to the brain parenchyma can result in blood-brain barrier (BBB) breakdown. Emerging data suggest that peroxisome proliferator-activated receptor beta/delta (PPAR-β/δ) activation has a potential neuroprotective role in ischemic stroke. However, mechanisms of PPAR-β/δ mediated protection in ischemic insults remain unclear...
October 18, 2016: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/27816731/the-ccl2-ccr2-axis-in-lymph-node-metastasis-from-oral-squamous-cell-carcinoma-an-immunohistochemical-study
#10
Shuichi Fujita, Tohru Ikeda
PURPOSE: Cytokine or chemokine networks involve lymphatic and distant metastasis of various malignancies, including oral squamous cell carcinoma (OSCC). Immunohistochemical analysis was used to investigate the contribution of the axis of the CC chemokine receptor-2 (CCR2) and the CC chemokine receptor-2 ligand (CCL2) to lymphatic metastasis, particularly the relation between primary OSCC and marginal sinus histiocytosis in regional lymph nodes. MATERIALS AND METHODS: Thirteen metastasis-free cases, 15 metastatic cases at resection of primary tumor resection, and 13 postresection metastasis cases were examined...
October 8, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27809288/mmp-3-deficiency-alleviates-endotoxin-induced-acute-inflammation-in-the-posterior-eye-segment
#11
Inge Van Hove, Evy Lefevere, Lies De Groef, Jurgen Sergeys, Manuel Salinas-Navarro, Claude Libert, Roosmarijn Vandenbroucke, Lieve Moons
Matrix metalloproteinase-3 (MMP-3) is known to mediate neuroinflammatory processes by activating microglia, disrupting blood-central nervous system barriers and supporting neutrophil influx into the brain. In addition, the posterior part of the eye, more specifically the retina, the retinal pigment epithelium (RPE) and the blood-retinal barrier, is affected upon neuroinflammation, but a role for MMP-3 during ocular inflammation remains elusive. We investigated whether MMP-3 contributes to acute inflammation in the eye using the endotoxin-induced uveitis (EIU) model...
November 1, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27806313/recombinant-oncolytic-poliovirus-pvsripo-has-potent-cytotoxic-and-innate-inflammatory-effects-mediating-therapy-in-human-breast-and-prostate-cancer-xenograft-models
#12
Eda K Holl, Michael C Brown, David Boczkowski, Megan A McNamara, Daniel J George, Darell D Bigner, Matthias Gromeier, Smita K Nair
Intratumoral inoculation of viruses with tumor-selective cytotoxicity may induce cancer cell death and, thereby, shrink neoplastic lesions. It is unlikely, however, that viral tumor cell killing alone could produce meaningful, durable clinical responses, as clinically suitable 'oncolytic' viruses are severely attenuated and their spread and propagation are opposed by host immunity. Thus, a more propitious event in this context is the innate antiviral response to intratumoral virus administration, in particular for recruiting durable adaptive immune effector responses...
October 28, 2016: Oncotarget
https://www.readbyqxmd.com/read/27788481/propranolol-induces-a-favourable-shift-of-anti-tumor-immunity-in-a-murine-spontaneous-model-of-melanoma
#13
Ludovic Jean Wrobel, Lloyd Bod, Renée Lengagne, Masashi Kato, Armelle Prévost-Blondel, Frédérique-Anne Le Gal
In a previous study on a xenograft model of melanoma, we showed that the beta-adrenergic receptor antagonist propranolol inhibits melanoma development by modulating angiogenesis, proliferation and cell survival. Stress hormones can influence tumor development in different ways and norepinephrine was shown to downregulate antitumor immune responses by favoring the accumulation of immunosuppressive cells, impairing the function of lymphocytes. We assessed the effect of propranolol on antitumor immune response in the MT/Ret mouse model of melanoma...
October 24, 2016: Oncotarget
https://www.readbyqxmd.com/read/27787523/fever-range-hyperthermia-improves-the-anti-apoptotic-effect-induced-by-low-ph-on-human-neutrophils-promoting-a-proangiogenic-profile
#14
Fernando Erra Díaz, Ezequiel Dantas, Maia Cabrera, Constanza A Benítez, María V Delpino, Gabriel Duette, Julia Rubione, Norberto Sanjuan, Analía S Trevani, Jorge Geffner
Neutrophils have the shortest lifespan among leukocytes and usually die via apoptosis, limiting their deleterious potential. However, this tightly regulated cell death program can be modulated by pathogen-associated molecular patterns (PAMPs), danger-associated molecular pattern (DAMPs), and inflammatory cytokines. We have previously reported that low pH, a hallmark of inflammatory processes and solid tumors, moderately delays neutrophil apoptosis. Here we show that fever-range hyperthermia accelerates the rate of neutrophil apoptosis at neutral pH but markedly increases neutrophil survival induced by low pH...
October 27, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27785664/genetic-phagocyte-nadph-oxidase-deficiency-enhances-nonviable-candida-albicans-induced-inflammation-in-mouse-lungs
#15
Daiki Endo, Kenta Fujimoto, Rika Hirose, Hiroko Yamanaka, Mizuki Homme, Ken-Ichi Ishibashi, Noriko Miura, Naohito Ohno, Yasuaki Aratani
Patients with chronic granulomatous disease (CGD) have mutated phagocyte NADPH oxidase, resulting in reduced production of reactive oxygen species (ROS). While the mechanism underlying hyperinfection in CGD is well understood, the basis for inflammatory disorders that arise in the absence of evident infection has not been fully explained. This study aimed to evaluate the effect of phagocyte NADPH oxidase deficiency on lung inflammation induced by nonviable Candida albicans (nCA). Mice deficient in this enzyme (CGD mice) showed more severe neutrophilic pneumonia than nCA-treated wild-type mice, which exhibited significantly higher lung concentrations of interleukin (IL)-1β, tumor necrosis factor (TNF)-α, and keratinocyte-derived chemokine (KC)...
October 26, 2016: Inflammation
https://www.readbyqxmd.com/read/27770461/depletion-of-myeloid-cells-exacerbates-hepatitis-and-induces-an-aberrant-increase-in-histone-h3-in-mouse-serum
#16
Xuehua Piao, Soh Yamazaki, Sachiko Komazawa-Sakon, Sanae Miyake, Osamu Nakabayashi, Takeyuki Kurosawa, Tetsuo Mikami, Minoru Tanaka, Nico Van Rooijen, Masaki Ohmuraya, Akira Oikawa, Yuko Kojima, Soichiro Kakuta, Yasuo Uchiyama, Masato Tanaka, Hiroyasu Nakano
: Tissue-resident macrophages and bone marrow (BM)-derived monocytes play a crucial role in the maintenance of tissue homeostasis; however, their contribution to recovery from acute tissue injury is not fully understood. To address this issue, we generated an acute murine liver injury model using hepatocyte-specific Cflar-deficient (Cflar(Hep-low) ) mice. Cellular FLICE-inhibitory protein (cFLIP) expression was downregulated in Cflar-deficient hepatocytes, which thereby increased susceptibility of hepatocytes to death receptor-induced apoptosis...
October 22, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/27763900/tumor-infiltrating-neutrophils-is-prognostic-and-predictive-for-postoperative-adjuvant-chemotherapy-benefit-in-patients-with-gastric-cancer
#17
Heng Zhang, Hao Liu, Zhenbin Shen, Chao Lin, Xuefei Wang, Jing Qin, Xinyu Qin, Jiejie Xu, Yihong Sun
OBJECTIVE: This study was aimed to investigate the prognostic value of tumor-infiltrating neutrophils (TINs) and to generate a predictive model to refine postoperative risk stratification system for patients with gastric cancer. BACKGROUND: TIN presents in various malignant tumors, but its clinical significance in gastric cancer remains obscure. METHODS: The study enrolled 3 independent sets of patients with gastric cancer from 2 institutional medical centers of China...
October 14, 2016: Annals of Surgery
https://www.readbyqxmd.com/read/27756813/stenotrophomonas-maltophilia-outer-membrane-vesicles-elicit-a-potent-inflammatory-response-in-vitro-and-in-vivo
#18
Yoo Jeong Kim, Hyejin Jeon, Seok Hyeon Na, Hyo Il Kwon, Gati Noble Selasi, Asiimwe Nicholas, Tae In Park, Sang Hwa Lee, Je Chul Lee
Stenotrophomonas maltophilia has become one of the most prevalent opportunistic pathogens in hospitalized patients. This microorganism secretes outer membrane vesicles (OMVs), but the pathogenesis of S. maltophilia as it relates to OMVs has not been characterized. This study investigated the cytotoxic activity of S. maltophilia OMVs and their ability to induce inflammatory responses both in vitro and in vivo S. maltophilia ATCC 13637 and two clinical isolates were found to secrete spherical OMVs during in vitro culture...
October 17, 2016: Pathogens and Disease
https://www.readbyqxmd.com/read/27748832/effect-of-endotoxemia-in-mice-genetically-deficient-in-cystathionine-%C3%AE-lyase-cystathionine-%C3%AE-synthase-or-3-mercaptopyruvate-sulfurtransferase
#19
Akbar Ahmad, Domokos Gerö, Gabor Olah, Csaba Szabo
Hydrogen sulfide (H2S) has been proposed to exert pro- as well as anti-inflammatory effects in various models of critical illness. In this study, we compared bacterial lipopolysaccharide (LPS)‑induced changes in inflammatory mediator production, indices of multiple organ injury and survival in wild‑type (WT) mice and in mice with reduced expression of one of the three H2S‑producing enzymes, cystathionine-γ-lyase (CSE), cystathionine-β-synthase (CBS) or 3-mercaptopyruvate sulfurtransferase (3MST)...
October 14, 2016: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/27748573/role-of-the-p38-mitogen-activated-protein-kinase-signaling-pathway-in-estrogen-mediated-protection-following-flap-ischemia-reperfusion-injury
#20
JiHui Ju, JianLong Wu, RuiXing Hou
Ischemia-reperfusion (I/R) injury often occurs during skin flap transplantation and results in tissue damage. Although estrogen treatment significantly alleviates this I/R injury-induced damage, the detailed molecular mechanism is not clear. In this study, a superficial epigastric artery flap I/R injury model was created in adult Wistar rats. Severe necrosis was observed in skin tissue after I/R injury. Histological examination of skin tissue revealed that I/R injury damages skin structure and results in neutrophil infiltration...
October 2016: Cell Biochemistry and Function
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