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https://www.readbyqxmd.com/read/28643021/the-effect-of-14-3-3%C3%AE-expression-on-tamoxifen-resistance-and-breast-cancer-recurrence-a-danish-population-based-study
#1
Jake E Thistle, Ylva Hellberg, Kristina Mortensen, Stephen Hamilton-Dutoit, Anders Kjærsgaard, Deirdre Cronin-Fenton, Henrik Toft Sørensen, Timothy L Lash
PURPOSE: Overexpression of 14-3-3ζ has been linked to breast cancer recurrence in several studies, including studies assessing its effect on tamoxifen resistance. The study was performed to estimate the effect of 14-3-3ζ and differentiate potential prognostic or predictive utility. METHODS: A case-control study, nested in a population of 11,251 females residing on the Jutland Peninsula of Denmark, was performed. Participants were aged 35-69, diagnosed with stage I, II, or III breast cancer between 1985 and 2001, and registered with the Danish Breast Cancer Cooperative Group...
June 22, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28642035/improving-the-efficacy-of-hormone-therapy-in-breast-cancer-the-role-ofcholesterol-metabolism-in-serm-mediated-autophagy-cell-differentiation-and-death
#2
REVIEW
Julie Leignadier, Florence Dalenc, Marc Poirot, Sandrine Silvente-Poirot
Breast cancer (BC) is one of the most common female cancers in the world, with estrogen receptor (ER)-positive BC the most frequent subtype. Tamoxifen (Tam) is an effective drug that competitively binds to the ER and is routinely used for the treatment of ER-positive BC. However, a number of ER-positive BC do not respond to Tam treatment and acquired resistance is often observed, constituting a major challenge for extending patient life expectancy. The mechanisms responsible for these treatment failures remain unclear, indicating the requirement for other targets and better predictors for patient response to Tam...
June 19, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28639031/opioid-use-among-female-breast-cancer-patients-using-different-adjuvant-endocrine-therapy-regimens
#3
Xi Tan, Tareq Fabian Camacho, Virginia T LeBaron, Leslie J Blackhall, Rajesh Balkrishnan
PURPOSE: To explore differences in opioid use across different adjuvant endocrine therapy (AET) regimens, factors associated with opioid use, and the impact of opioid use on overall survival in female breast cancer patients treated with AET. METHODS: This retrospective study analyzed 2006-2012 SEER-Medicare datasets, following patients for at least two years from the index date, defined as the first date they filled an AET prescription. The study included adult women with incident, primary, hormone-receptor-positive, stage I-III breast cancer...
June 21, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28638475/tamoxifen-activates-nrf2-dependent-sqstm1-transcription-to-promote-endometrial-hyperplasia
#4
Lifeng Feng, Jiaqiu Li, Lixian Yang, Libo Zhu, Xiufeng Huang, Shuzheng Zhang, Likang Luo, Zhinong Jiang, Tingting Jiang, Wenxia Xu, Xian Wang, Hongchuan Jin
Long-term application of Tamoxifen (TAM) is usually recommended for hormone receptor positive breast cancer patients. Unfortunately, TAM will inevitably increase the incidence of endometrial hyperplasia even endometrial cancer. Despite of substantial investigations, no effective approaches to prevent TAM-induced endometrial carcinogenesis have been acknowledged. In this study, we found that inhibition of Nrf2 could be valuable to prevent TAM-induced endometrial hyperplasia. Upon TAM treatment, the mRNA and protein expression of autophagy adaptor SQSTM1 was specifically increased in endometrial cells but not breast cancer cells...
2017: Theranostics
https://www.readbyqxmd.com/read/28634284/co-administration-of-rankl-and-ctla4-antibodies-enhances-lymphocyte-mediated-anti-tumor-immunity-in-mice
#5
Elizabeth Ahern, Heidi Harjunpaa, Deborah Barkauskas, Stacey Allen, Kazuyoshi Takeda, Hideo Yagita, David Wyld, William C Dougall, Michele W L Teng, Mark J Smyth
Purpose: Novel partners for established immune checkpoint inhibitors in the treatment of cancer are needed to address the problems of primary and acquired resistance. The efficacy of combination RANKL and CTLA4 blockade in anti-tumor immunity has been suggested by recent case reports in melanoma. Here we provide a rationale for this combination in mouse models of cancer. <br />Experimental Design: The efficacy and mechanism of a combination of RANKL and CTLA4 blockade was examined by tumor infiltrating lymphocyte analysis, tumor growth and metastasis using a variety of neutralizing antibodies and gene-targeted mice...
June 20, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28633143/tumor-associated-macrophages-in-the-development-of-4-nitroquinoline-1-oxide-induced-tongue-squamous-cell-carcinoma-in-a-mouse-model
#6
Kentaro Miki, Yorihisa Orita, Yuka Gion, Soshi Takao, Kyotaro Ohno, Mai Takeuchi, Toshihiro Ito, Akira Minoura, Tomoyasu Tachibana, Hidenori Marunaka, Takuma Makino, Akihiro Matsukawa, Kazunori Nishizaki, Tadashi Yoshino, Yasuharu Sato
OBJECTIVE: We aimed to determine the distribution of tumor-associated macrophages (TAMs) in the development of tongue squamous cell carcinoma (SCC) and to elucidate the role of TAMs in the progression of tongue SCC. METHODS: The expression of the macrophage markers nitric oxide synthase, Retnla, and mannose receptor 1 in the development of tongue SCC was longitudinally observed using real-time quantitative polymerase chain reaction. Additionally, an immunohistochemical study using an anti-mannose receptor (MR) antibody was performed...
June 21, 2017: Oncology
https://www.readbyqxmd.com/read/28621419/tam-receptor-signaling-in-development
#7
Tal Burstyn-Cohen
TYRO3, AXL and MERTK comprise the TAM family of receptor protein tyrosine kinases. Activated by their ligands, protein S (PROS1) and growth-arrest-specific 6 (GAS6), they mediate numerous cellular functions throughout development and adulthood. Expressed by a myriad of cell types and tissues, they have been implicated in homeostatic regulation of the immune, nervous, vascular, bone and reproductive systems. The loss-of-function of TAM signaling in adult tissues culminates in the destruction of tissue homeostasis and diseased states, while TAM gain-of-function in various tumors promotes cancer phenotypes...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28616398/new-photodynamic-therapy-with-next-generation-photosensitizers
#8
REVIEW
Hiromi Kataoka, Hirotada Nishie, Noriyuki Hayashi, Mamoru Tanaka, Akihiro Nomoto, Shigenobu Yano, Takashi Joh
Photodynamic therapy (PDT) is a non-invasive antitumor treatment that uses the combination of a photosensitizer, tissue oxygen, and visible light irradiation to produce cytotoxic reactive oxygen species, predominantly singlet oxygen. Currently, first-generation PDT using porfimer sodium with an excimer dye laser, and second-generation PDT using talaporfin sodium PDT with a semiconductor laser are approved by health insurance for use in Japan. However, the cancer cell specificity and selectivity of these treatments are inadequate...
April 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28615091/-detection-and-analysis-of-phenotypes-of-tumor-associated-macrophages-in-mouse-model-of-spontaneous-breast-cancer
#9
Xiaojie Ren, Peng Ren, Song Luo, Quanbo Ji, Meng Xu, Ning Lu, Yan Wang
Objective To detect the phenotypic conversion of tumor-associated macrophages (TAMs) through analyzing the expression levels of the polarization-related genes. Methods We identified the spontaneous breast cancer mice by genotyping and characterized them into the early stage and the advanced stage groups according to their tumor size. Single cell suspension of the tumor tissues were obtained by mechanical methods and TAMs of different stages were sorted by flow cytometry. We measured the mRNA levels of M1 macrophages-related genes IL-1β, IL-27, IL-6, CD80, CD86 and M2 macrophages-related genes arginase 1 (Arg1), IL-10, interleukin 4 receptor α (IL-4Rα), macrophage mannose receptor 1 (Mrc1), chitinase-like 3 (Chil3/Ym1) by real-time quantitative PCR in order to analyze the phenotypic conversion of TAMs during the tumor progression...
June 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28614294/human-fetal-dendritic-cells-promote-prenatal-t-cell-immune-suppression-through-arginase-2
#10
Naomi McGovern, Amanda Shin, Gillian Low, Donovan Low, Kaibo Duan, Leong Jing Yao, Rasha Msallam, Ivy Low, Nurhidaya Binte Shadan, Hermi R Sumatoh, Erin Soon, Josephine Lum, Esther Mok, Sandra Hubert, Peter See, Edwin Huang Kunxiang, Yie Hou Lee, Baptiste Janela, Mahesh Choolani, Citra Nurfarah Zaini Mattar, Yiping Fan, Tony Kiat Hon Lim, Dedrick Kok Hong, Ker-Kan Tan, John Kit Chung Tam, Christopher Schuster, Adelheid Elbe-Bürger, Xiao-Nong Wang, Venetia Bigley, Matthew Collin, Muzlifah Haniffa, Andreas Schlitzer, Michael Poidinger, Salvatore Albani, Anis Larbi, Evan W Newell, Jerry Kok Yen Chan, Florent Ginhoux
During gestation the developing human fetus is exposed to a diverse range of potentially immune-stimulatory molecules including semi-allogeneic antigens from maternal cells, substances from ingested amniotic fluid, food antigens, and microbes. Yet the capacity of the fetal immune system, including antigen-presenting cells, to detect and respond to such stimuli remains unclear. In particular, dendritic cells, which are crucial for effective immunity and tolerance, remain poorly characterized in the developing fetus...
June 14, 2017: Nature
https://www.readbyqxmd.com/read/28591668/the-selective-estrogen-receptor-modulators-serms-raloxifene-and-tamoxifen-improve-anp-levels-and-decrease-nuclear-translocation-of-nf-kb-in-estrogen-deficient-rats
#11
Aline Z Lamas, Andrews M Nascimento, Ana Raquel S Medeiros, Izabela F Caliman, Polyana L M Dalpiaz, Luciana B Firmes, Glauciene J Sousa, Phablo Wendell C Oliveira, Tadeu U Andrade, Adelina M Reis, Sônia A Gouvea, Nazaré S Bissoli
BACKGROUND: The selective estrogen receptor modulators (SERMs) raloxifene and tamoxifen are used for the treatment of osteoporosis and cancer, respectively, in women. The impairment of both the Atrial Natriuretic Peptide (ANP) cell signaling system and the translocation of nuclear factor-kappa B (NF-kB) to the cell nucleus are associated with detrimental cardiovascular effects and inflammation. The effects of SERMs on these parameters in the cardiac tissue of estrogen-deficient rats has not been reported...
March 16, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28576927/overcoming-the-immunosuppressive-tumor-microenvironment-of-hodgkin-lymphoma-using-chimeric-antigen-receptor-t-cells
#12
Marco Ruella, Michael Klichinsky, Saad S Kenderian, Olga Shestova, Amy Ziober, Daniel O Kraft, Michael Feldman, Mariusz A Wasik, Carl H June, Saar Gill
Some patients with otherwise treatment-resistant Hodgkin lymphoma (HL) could benefit from chimeric antigen receptor T cell (CART) therapy. However, HL lacks CD19 and contains a highly immunosuppressive tumor microenvironment (TME). We hypothesized that in HL, CART should target both malignant cells and the TME. We demonstrated CD123 on both HL cells and TME, including tumor-associated macrophages (TAM). In vitro, HL cells convert macrophages towards immunosuppressive TAM that inhibit T cell proliferation. In contrast, anti-CD123 CART recognized and killed TAM thus overcoming immunosuppression...
June 2, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28574667/the-high-density-of-cd204-positive-macrophages-predicts-worse-clinical-prognosis-in-patients-with-breast-cancer
#13
Yuko Miyasato, Takuya Shiota, Koji Ohnishi, Cheng Pan, Hiromu Yano, Hasita Horlad, Yutaka Yamamoto, Mutsuko Yamamoto-Ibusuki, Hirotaka Iwase, Motohiro Takeya, Yoshihiro Komohara
Recent studies have indicated the clinical significance of tumor-associated macrophages (TAMs) in several malignant tumors including breast cancer. Although recent studies have focused on CD68-positive or CD163-positive TAMs in breast cancer, no study has investigated the significance of CD204-positive TAMs in breast cancer. We found that CD204 expression by macrophages was evaluated following stimulation with the conditioned medium (CM) of breast cancer cell lines. Paraffin sections of 149 breast cancer samples which were diagnosed as invasive ductal carcinoma were immunohistochemically analyzed for CD68, CD163, and CD204 expression...
June 2, 2017: Cancer Science
https://www.readbyqxmd.com/read/28572686/use-of-patterned-collagen-coated-slides-to-study-normal-and-scleroderma-lung-fibroblast-migration
#14
Bahja Ahmed Abdi, Henry Lopez, Sarah Karrar, Elisabetta Renzoni, Athol Wells, Angela Tam, Oseme Etomi, J Justin Hsuan, George R Martin, Xu Shiwen, Christopher P Denton, David Abraham, Richard Stratton
Systemic sclerosis (SSc) is a spreading fibrotic disease affecting the skin and internal organs. We aimed to model pathogenic fibroblast migration in SSc in order to identify enhancing factors, measure the effect of migrating cells on underlying extracellular matrix (ECM) and test possible therapeutic inhibitors. Novel patterned collagen substrates were used to investigate alignment and migration of skin and lung fibroblasts from SSc patients and healthy controls. Normal lung but not skin fibroblasts consistently elongated and aligned with underlying collagen and migrated dependent on PDGF or serum...
June 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28572167/colony-stimulating-factor-1-receptor-blockade-inhibits-tumor-growth-by-altering-the-polarization-of-tumor-associated-macrophages-in-hepatocellular-carcinoma
#15
Jian-Yang Ao, Xiao-Dong Zhu, Zong-Tao Chai, Hao Cai, Yuan-Yuan Zhang, Ke-Zhi Zhang, Ling-Qun Kong, Ning Zhang, Bo-Gen Ye, De-Ning Ma, Hui-Chuan Sun
Colony-stimulating factor-1 (CSF-1) and its receptor, CSF-1R, regulate the differentiation and function of macrophages and play an important role in macrophage infiltration in the context of hepatocellular carcinoma (HCC). The therapeutic effects of CSF-1R blockade in HCC remain unclear. In this study, we found that CSF-1R blockade by PLX3397, a competitive inhibitor with high specificity for CSF-1R tyrosine kinase, significantly delayed tumor growth in mouse models. PLX3397 inhibited the proliferation of macrophages in vitro, but intratumoral macrophage infiltration was not decreased by PLX3397 in vivo...
June 1, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28569747/tumour-associated-macrophages-secrete-pleiotrophin-to-promote-ptprz1-signalling-in-glioblastoma-stem-cells-for-tumour-growth
#16
Yu Shi, Yi-Fang Ping, Wenchao Zhou, Zhi-Cheng He, Cong Chen, Bai-Shi-Jiao Bian, Lin Zhang, Lu Chen, Xun Lan, Xian-Chao Zhang, Kai Zhou, Qing Liu, Hua Long, Ti-Wei Fu, Xiao-Ning Zhang, Mian-Fu Cao, Zhi Huang, Xiaoguang Fang, Xiuxing Wang, Hua Feng, Xiao-Hong Yao, Shi-Cang Yu, You-Hong Cui, Xia Zhang, Jeremy N Rich, Shideng Bao, Xiu-Wu Bian
Intense infiltration of tumour-associated macrophages (TAMs) facilitates malignant growth of glioblastoma (GBM), but the underlying mechanisms remain undefined. Herein, we report that TAMs secrete abundant pleiotrophin (PTN) to stimulate glioma stem cells (GSCs) through its receptor PTPRZ1 thus promoting GBM malignant growth through PTN-PTPRZ1 paracrine signalling. PTN expression correlates with infiltration of CD11b(+)/CD163(+) TAMs and poor prognosis of GBM patients. Co-implantation of M2-like macrophages (MLCs) promoted GSC-driven tumour growth, but silencing PTN expression in MLCs mitigated their pro-tumorigenic activity...
June 1, 2017: Nature Communications
https://www.readbyqxmd.com/read/28561752/melatonin-inhibits-androgen-receptor-splice-variant-7-ar-v7-induced-nuclear-factor-kappa-b-nf-%C3%AE%C2%BAb-activation-and-nf-%C3%AE%C2%BAb-activator-induced-ar-v7-expression-in-prostate-cancer-cells-potential-implications-for-the-use-of-melatonin-in-castration-resistant-prostate
#17
Vincent Wing Sun Liu, Wing Lung Yau, Chun Wai Tam, Kwok-Ming Yao, Stephen Yuen Wing Shiu
A major current challenge in the treatment of advanced prostate cancer, which can be initially controlled by medical or surgical castration, is the development of effective, safe, and affordable therapies against progression of the disease to the stage of castration resistance. Here, we showed that in LNCaP and 22Rv1 prostate cancer cells transiently overexpressing androgen receptor splice variant-7 (AR-V7), nuclear factor-kappa B (NF-κB) was activated and could result in up-regulated interleukin (IL)-6 gene expression, indicating a positive interaction between AR-V7 expression and activated NF-κB/IL-6 signaling in castration-resistant prostate cancer (CRPC) pathogenesis...
May 31, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28558695/azithromycin-and-risk-of-copd-exacerbations-in-patients-with-and-without-helicobacter-pylori
#18
Seung Won Ra, Marc A Sze, Eun Chong Lee, Sheena Tam, Yeni Oh, Nick Fishbane, Gerard J Criner, Prescott G Woodruff, Stephen C Lazarus, Richard Albert, John E Connett, Meilan K Han, Fernando J Martinez, Shawn D Aaron, Robert M Reed, S F Paul Man, Don D Sin
BACKGROUND: Helicobacter pylori (HP) infection is associated with reduced lung function and systemic inflammation in chronic obstructive pulmonary disease (COPD) patients. Azithromycin (AZ) is active against HP and reduces the risk of COPD exacerbation. We determined whether HP infection status modifies the effects of AZ in COPD patients. METHODS: Plasma samples from 1018 subjects with COPD who participated in the Macrolide Azithromycin (MACRO) in COPD Study were used to determine the HP infection status at baseline and 12 months of follow-up using a serologic assay...
May 30, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28551502/promiscuity-and-selectivity-of-small-molecule-inhibitors-across-tam-receptor-tyrosine-kinases-in-pediatric-leukemia
#19
Mao-Hua Liu, Shi-Bing Chen, Juan Yu, Cheng-Jun Liu, Xiao-Jing Zhang
The TAM receptor tyrosine kinase family member Mer has been recognized as an attractive therapeutic target for pediatric leukemia. Beside Mer the family contains other two kinases, namely, Tyro3 and Axl, which are highly homologues with Mer and thus most existing small-molecule inhibitors show moderate or high promiscuity across the three kinases. Here, the structural basis and energetic property of selective binding of small-molecule inhibitors to the three kinases were investigated at molecular level. It is found that the selectivity is primarily determined by the size, shape and configuration of kinase's ATP-binding site; the Mer and Axl possess a small, closed active pocket as compared to the bulky, open pocket of Tyro3...
May 15, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28537534/elevated-plasma-growth-arrest-specific-6-protein-levels-are-associated-with-the-severity-of-disease-during-hantaan-virus-infection-in-humans
#20
Chunmei Zhang, Kang Tang, Yusi Zhang, Ying Ma, Ran Zhuang, Xuyang Zheng, Boquan Jin, Yun Zhang
Hemorrhagic fever with renal syndrome (HFRS) is caused by Hantaan virus (HTNV) and Seoul virus infection in Asia. The clinical manifestation of HFRS is characterized by the rapid loss of renal function (acute kidney injury) and thrombocytopenia. The specific immune mechanisms that cause thrombocytopenia in HFRS are not well described. The growth arrest-specific 6 (Gas6) protein and TAM (Tyro3, Axl and Mer) receptors have been recently shown to play prominent roles in immune regulation, and high plasma levels of Gas6 may predict the severity of diseases...
June 2017: Viral Immunology
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