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"lung cancer", "macrophage"

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https://www.readbyqxmd.com/read/28635229/-macrophage-colony-stimulating-factor-enhances-non-small-cell-lung-cancer-invasion-and-metastasis-by-promoting-macrophage-m2-polarization
#1
Y J Li, L Yang, L P Wang, Y Zhang
Objective: To investigate the key cytokine which polarizes M2 macrophages and promotes invasion and metastasis in non-small cell lung cancer (NSCLC). Methods: After co-culture with A549 cells in vitro, the proportion of CD14(+) CD163(+) M2 macrophages in monocytes and macrophage colony stimulating factor (M-CSF) levels in culture supernatant were detected by flow cytometry, ELISA assay and real-time qPCR, respectively. The effects of CD14(+) CD163(+) M2 macrophages on invasion of A549 cells and angiogenesis of HUVEC cells were measured by transwell assay and tubule formation assay, respectively...
June 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28632731/cd47-overexpression-is-associated-with-decreased-neutrophil-apoptosis-phagocytosis-and-poor-prognosis-in-non-small-cell-lung-cancer-patients
#2
Lourdes Barrera, Edgar Montes-Servín, Juan-Manuel Hernandez-Martinez, María de Los Ángeles García-Vicente, Elizabeth Montes-Servín, Marytere Herrera-Martínez, José C Crispín, José Rafael Borbolla-Escoboza, Oscar Arrieta
BACKGROUND: Non-small-cell lung cancer (NSCLC) patients often exhibit neutrophilia, which has been associated with poor clinical outcomes. However, the mechanisms that lead to neutrophilia have not been fully established. CD47 is an antiphagocytic molecule that promotes neutrophil recruitment. METHODS: Blood was collected from 50 treatment-naive patients with advanced NSCLC and from 25 healthy subjects. The frequency of CD66b(+) cells and the expression of CD47 were determined by flow cytometry...
June 20, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28630636/targeting-tumor-microenvironment-effects-of-chinese-herbal-formulae-on-macrophage-mediated-lung-cancer-in-mice
#3
Fei Xu, Wenqiang Cui, Zhengxiao Zhao, Weiyi Gong, Ying Wei, Jiaqi Liu, Mihui Li, Qiuping Li, Chen Yan, Jian Qiu, Baojun Liu, Jingcheng Dong
Our previous studies have shown that Qing-Re-Huo-Xue (QRHX) formulae had significant anti-inflammatory effects in chronic airway diseases such as asthma and chronic obstructive lung disease. Here, we examined the effects of QRHX on lung cancer cell invasion and the potential associated mechanism(s), mainly polarization of macrophages in the tumor microenvironment. In vivo, QRHX both inhibited tumor growth and decreased the number of tumor-associated macrophages (TAMs) in mice with lung cancer. Further study indicated that QRHX inhibited cancer-related inflammation in tumor by decreasing infiltration of TAMs and IL-6 and TNF-α production and meanwhile decreased arginase 1 (Arg-1) expression and increased inducible NO synthase (iNOS) expression...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28629523/significance-of-erythropoietin-receptor-antagonist-emp9-in-cancers
#4
Yoshiko Yasuda, Mitsugu Fujita
We have clarified that cancer cells express their own erythropoietin (Epo) and its receptor (EpoR) mRNA levels, and the respective proteins, which are under the control of Epo-EpoR signaling. Then we explored to inhibit the Epo-EpoR signaling with an EpoR antagonist Epo mimetic peptide 9 (EMP9) that is a derivative of an Epo-mimicking peptide EMP1. In the study of the cancer cell lines in vitro, rhEpo accelerated the cancer cell growth, whereas the EMP9 inhibited the cell growth along with the inhibition of STAT5 tyrosine phosphorylation...
2017: Vitamins and Hormones
https://www.readbyqxmd.com/read/28627635/concomitant-mycobacterium-tuberculosis-infection-promotes-lung-tumor-growth-through-enhancing-treg-development
#5
Yan Zhou, Zhangguo Hu, Shuhui Cao, Bo Yan, Jialin Qian, Hua Zhong
Lung cancer is the most common malignancy in humans. An increased population of CD4+Foxp3+ regulatory T cells (Tregs) in the tumor-associated microenvironment plays an important role in cancer immune evasion. The exact role and the involved mechanisms of concomitant H37Rv infection in non-small cell lung cancer (NSCLC) development are still not clear. Here, we showed that H37Rv infection promoted NSCLC cell growth with a higher percentage of Tregs found in draining lymph nodes. We also determined in vitro that H37Rv infection induced macrophage maturation and PD-L1 expression, which promoted Treg proportion, with enhanced proliferation suppression function...
June 19, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28624450/%C3%AE-elemene-inhibits-tumor-promoting-effect-of-m2-macrophages-in-lung-cancer
#6
Xiaomu Yu, Maoyi Xu, Na Li, Zongjuan Li, Hongye Li, Shujuan Shao, Kun Zou, Lijuan Zou
Macrophages in tumor are mostly M2-polarized and have been reported to promote tumorigenesis, which are also defined as tumor-associated macrophages (TAMs). β-elemene has therapeutic effects against several cancers, however, it remains unknown whether β-elemene could inhibit cancer by targeting TAMs. Herein, we examined the effect of β-elemene on macrophages to elucidate a novel mechanism of β-elemene in tumor therapy. We showed that the conditioned medium of M2 macrophages promoted lung cancer cells to migration, invasion and epithelial mesenchymal transition, which could be inhibited by β-elemene...
June 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28612556/-effects-of-msp-on-the-proliferation-migration-and-invasion-of-human-non-small-cell-lung-cancer-cells
#7
Xia Liu, Shi-Hang Wei, Xue-Ni Shi, Yi-Nan Zuo, Xue-Ling He, Hai-Lin Yin
OBJECTIVES: To determine the effects of macrophage stimulating protein (Msp) on the proliferation, migration and invasion of human non-small cell lung cancer cells PC14. METHODS: The eukaryotic expression vector for st1was constructed and transfected into Msp(-)and RON(-)human non-small cell lung cancer cells PC14. The expression of st1mRNA in PC14 cells was observed by RT-PCR. The expression levels of Msp protein in PC14, PC14-st1-pEGFP-N1 and PC14-pEGFP-N1 groups as well as the expression of RON in PC14 and SKBR-3 cells were detected by Western blot...
January 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28592028/-analysis-of-12-cases-of-exogenous-lipoid-pneumonia-confirmed-by-pathology
#8
Y X Wang, F Fang, Y F Guo, Y M Li, T Y Sun, M Zhang, J Chen, B M Fang
Objective: To study the etiological, clinical, radiological, diagnostic, therapeutic, and prognostic manifestations of exogenous lipoid pneumonia (ELP), and therefore to improve the diagnosis and treatment of this disease. Methods: The clinical data of 12 cases of ELP confirmed by pathology were retrospectively analyzed. Results: The patients consisted of 9 males and 3 females, with an average age of 73.8 years (range, 44 to 100 years). The underlying diseases were variable, including diseases affecting the general condition (multiple organ failure, chronic heart and renal insufficiency, pemphigoid, etc) and conditions with increased risk of aspiration (sequelae of cerebrovascular disease, Alzheimer's disease, advanced stage of nasopharyngeal carcinoma, paralytic ileus, etc)...
June 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28578631/surfactant-protein-a-and-napsin-a-in-the-immunohistochemical-characterization-of-canine-pulmonary-carcinomas-comparison-with-thyroid-transcription-factor-1
#9
Jessica Beck, Margaret A Miller, Chad Frank, Dee DuSold, José Antonio Ramos-Vara
Thyroid transcription factor-1 (TTF-1) is a specific and sensitive marker for canine pulmonary tumors but is also expressed in thyroid carcinomas, which commonly metastasize to lung. Napsin A and surfactant protein A (SP-A) are used in the histologic diagnosis of non-small-cell lung cancer in humans but have not been thoroughly evaluated in neoplasms of dogs. The objective of this study was to compare the efficacy of immunohistochemistry for SP-A, napsin A, and TTF-1 in the diagnosis of canine pulmonary carcinomas...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28560677/mesenchymal-epithelial-transition-and-circulating-tumor-cells-in-small-cell-lung-cancer
#10
Gerhard Hamilton, Barbara Rath
Cancer patients die of metastatic disease but knowledge regarding individual steps of this complex process of intravasation, spread and extravasation leading to secondary lesions is incomplete. Subpopulations of tumor cells are supposed to undergo an epithelial-mesenchymal transition (EMT), to enter the bloodstream and eventually establish metastases in a reverse process termed mesenchymal-epithelial transition (MET). Small cell lung cancer (SCLC) represents a unique model to study metastatic spread due to early dissemination and relapse, as well as availability of a panel of circulating cancer cell (CTC) lines recently...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28534943/bu-fei-decoction-attenuates-the-tumor-associated-macrophage-stimulated-proliferation-migration-invasion-and-immunosuppression-of-non-small-cell-lung-cancer-partially-via-il-10-and-pd-l1-regulation
#11
Lina Pang, Shuyan Han, Yanna Jiao, Shantong Jiang, Xiran He, Pingping Li
Macrophages play a pivotal role in tumor microenvironment. Bu-Fei Decoction (BFD) is a classical formula of traditional Chinese medicine (TCM) to alleviate lung cancer related symptoms, whether it has antitumor effect or could influence cancer microenvironment deserves further study. The aim of the present study was to examine the antitumor effect of BFD on non-small cell lung cancer (NSCLC), and to investigate the underlying mechanisms through tumor associated macrophages (TAMs). M2-polarized TAMs were induced by Phorbol 12-myristate 13-acetate (PMA) and interleukin 4 (IL-4)...
May 19, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28514755/a-novel-serum-based-biomarker-panel-has-complementary-ability-to-preclude-presence-of-early-lung-cancer-for-low-dose-ct-ldct
#12
Xiaobing Wang, Xiuyi Zhi, Zhaogang Yang, Haimei Tian, Yanfen Li, Mo Li, Wenya Zhao, Chao Zhang, Teng Wang, Jing Liu, Di Shen, Cuining Zheng, Dan Zhao, Sheng Yang, Jun Qi, Hongwu Xin, Alexander Stojadinovic, Itzhak Avital, L James Lee, Jianyu Rao, Wei Zhang
Low Dosage Computerized Tomography (LDCT) has been shown to improve early detection of lung cancer and mortality rates in high-risk individuals, which was, however, limited by specifically coverage for heavy smokers and high rates of false positivity. Here, we aim to investigate a novel biomarker for early detection of lung cancer, and further extend to concentrate high-risk subjects for increasing specificity and coverage of LDCT. We performed retrospective blinded evaluation of lung cancer and healthy controls in training and validation cohorts...
April 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28514441/pd-1-expression-by-tumour-associated-macrophages-inhibits-phagocytosis-and-tumour-immunity
#13
Sydney R Gordon, Roy L Maute, Ben W Dulken, Gregor Hutter, Benson M George, Melissa N McCracken, Rohit Gupta, Jonathan M Tsai, Rahul Sinha, Daniel Corey, Aaron M Ring, Andrew J Connolly, Irving L Weissman
Programmed cell death protein 1 (PD-1) is an immune checkpoint receptor that is upregulated on activated T cells for the induction of immune tolerance. Tumour cells frequently overexpress the ligand for PD-1, programmed cell death ligand 1 (PD-L1), facilitating their escape from the immune system. Monoclonal antibodies that block the interaction between PD-1 and PD-L1, by binding to either the ligand or receptor, have shown notable clinical efficacy in patients with a variety of cancers, including melanoma, colorectal cancer, non-small-cell lung cancer and Hodgkin's lymphoma...
May 25, 2017: Nature
https://www.readbyqxmd.com/read/28512410/rrx-001-priming-of-pd-1-inhibition-in-the-treatment-of-small-cell-carcinoma-of-the-vagina-a-rare-gynecological-tumor
#14
Christina Brzezniak, Bryan Oronsky, Jane Trepel, Thomas A Summers, Pedro Cabrales, Min-Jung Lee, Regina Day, Saheli Jha, Scott Caroen, Karen Zeman, Lindsey Ferry, Cindy Harmer, Neil Oronsky, Michelle Lybeck, Harry E Lybeck, James F Brown, Tony R Reid, Corey A Carter
Small cell carcinoma of the vagina is rare, so rare in fact that the total number reported in English-language journals is less than 30. Due to this extremely low incidence, no specific treatment guidelines have been established, and most of what is clinically known is derived from a handful of single case reports. However, as befitting its highly aggressive histologic features, which are reminiscent of small cell lung cancer (SCLC), first-line treatment is modeled after SCLC. Herein is reported the case of a 51-year-old African-American patient with metastatic biopsy-proven small cell carcinoma of the vagina that progressed through multiple therapies: first-line cisplatin and etoposide (making it platinum-resistant) and radiotherapy, followed by the tumor macrophage-stimulating agent RRx-001 in a clinical trial called QUADRUPLE THREAT, which per protocol preceded a mandated rechallenge with cisplatin and etoposide...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28507549/human-lung-mononuclear-phagocytes-in-health-and-disease
#15
REVIEW
Faezzah Baharom, Gregory Rankin, Anders Blomberg, Anna Smed-Sörensen
The lungs are vulnerable to attack by respiratory insults such as toxins, allergens, and pathogens, given their continuous exposure to the air we breathe. Our immune system has evolved to provide protection against an array of potential threats without causing collateral damage to the lung tissue. In order to swiftly detect invading pathogens, monocytes, macrophages, and dendritic cells (DCs)-together termed mononuclear phagocytes (MNPs)-line the respiratory tract with the key task of surveying the lung microenvironment in order to discriminate between harmless and harmful antigens and initiate immune responses when necessary...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28489104/spatially-resolved-profiling-of-carbon-nanotube-uptake-across-cell-lines
#16
H D Summers, P Rees, J T-W Wang, K T Al-Jamal
The internalisation and intra-cellular distribution of carbon nanotubes (CNT) has been quantitatively assessed using imaging flow cytometry. Spatial analysis of the bright field images indicates the presence of a small sub-population (5% of cells) in which the internalised CNTs are packed into pronounced clusters, visible as dark spots due to strong optical scattering by the nanotubes. The area of these spots can be used as a label-free metric of CNT dose and we assess the relative uptake of charge-neutral CNTs, over a 24 hours exposure period across four cell types: J774 mouse macrophage cells, A549 and Calu-6 human lung cancer cells, and MCF-7 human breast cells...
May 25, 2017: Nanoscale
https://www.readbyqxmd.com/read/28484448/anti-cd47-antibody-as-a-targeted-therapeutic-agent-for-human-lung-cancer-and-cancer-stem-cells
#17
Liang Liu, Lin Zhang, Lin Yang, Hui Li, Runmei Li, Jinpu Yu, Lili Yang, Feng Wei, Cihui Yan, Qian Sun, Hua Zhao, Fan Yang, Hao Jin, Jian Wang, Shizhen Emily Wang, Xiubao Ren
Accumulating evidence indicates that a small subset of cancer cells, termed the tumor-initiating cells or cancer stem cells (CSCs), construct a reservoir of self-sustaining cancer cells with the characteristic ability to self-renew and maintain the tumor mass. The CSCs play an important role in the tumor initiation, development, relapse, metastasis, and the ineffectiveness of conventional cancer therapies. CD47 is a ligand for signal-regulatory protein-α expressed on phagocytic cells and functions to inhibit phagocytosis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28476594/studying-in-vitro-phagocytosis-of-apoptotic-cancer-cells-by-recombinant-gmcsf-treated-raw-264-7-macrophages
#18
Vanitha Selvarajan, Anil Parsram Bidkar, Rajib Shome, Aditi Banerjee, Nidhi Chaubey, Siddhartha S Ghosh, Pallab Sanpui
Granulocyte macrophage colony stimulating factor (GMCSF), a therapeutically important cytokine that helps in the proliferation of macrophages, was recombinantly expressed in E. coli BL21 and purified as a GST-tagged protein. Cell viability assay demonstrated significant enhancement in proliferation of RAW 264.7 (murine macrophage) in presence of GMCSF. In vitro activation of macrophages was carried out by lipopolysaccharide (LPS) or pyrogallol and probed by the generation of reactive oxygen species (ROS). Following the induction of apoptosis in A549 lung cancer cells with anticancer drug cisplatin (at 25μM), apoptotic cancer cells were effectively phagocytosed by the recombinant GMCSF-treated and exogenously activated RAW 264...
May 2, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28465192/lung-inflammation-and-genotoxicity-in-mice-lungs-after-pulmonary-exposure-to-candle-light-combustion-particles
#19
Astrid Skovmand, Ana Cecilia Damiao Gouveia, Ismo Kalevi Koponen, Peter Møller, Steffen Loft, Martin Roursgaard
Candle burning produces a large amount of particles that contribute substantially to the exposure to indoor particulate matter. The exposures to various types of combustion particles, such as diesel exhaust particles, have been associated with increased risk of lung cancer by mechanisms that involve oxidative stress, inflammation and genotoxicity. The aim of this study was to compare pulmonary effects of candle light combustion particles (CP) with two benchmark diesel exhaust particles (A-DEP and SRM2975). Intratracheal (i...
July 5, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28454399/inhibition-of-lung-cancer-growth-by-hangamdan-b-is-mediated-by-macrophage-activation-to-m1-subtype
#20
Hye-Rin Park, Eun-Ji Lee, Seong-Cheol Moon, Tae-Wook Chung, Keuk-Jun Kim, Hwa-Seung Yoo, Chong-Kwan Cho, Ki-Tae Ha
Re-education of tumor-associated macrophages (TAMs) toward antitumor effectors may be a promising therapeutic strategy for the successful treatment of cancer. HangAmDan-B (HAD-B), a herbal formula, has been used for stimulating immune function and activation of vital energy to cancer patients in traditional Korean Medicine. Previous studies have reported the anti-angiogenic and anti-metastatic effects of HAD-B; however, evidence on the immunomodulatory action of HAD-B was not demonstrated. In the present study, immunocompetent mice were used to demonstrate the suppression of the in vivo growth of allograft Lewis lung carcinoma (LLC) cells, by HAD-B...
April 2017: Oncology Letters
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