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MFG-E8

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https://www.readbyqxmd.com/read/29790105/physostigmine-restores-impaired-autophagy-in-the-rat-hippocampus-after-surgery-stress-and-lps-treatment
#1
Clarissa von Haefen, Marco Sifringer, Stefanie Endesfelder, Alexander Kalb, Adrián González-López, Annalena Tegethoff, Nadine Paeschke, Claudia D Spies
Tissue damage and pathogen invasion during surgical trauma have been identified as contributing factors leading to neuroinflammation in the hippocampus, which can be protected by stimulation of the cholinergic anti-inflammatory pathway using the acetylcholinesterase inhibitor physostigmine. Macroautophagy, an intracellular degradation pathway used to recycle and eliminate damaged proteins and organelles by lysosomal digestion, seems to be important for cell survival under stress conditions. This study aimed to examine the role of autophagy in physostigmine-mediated hippocampal cell protection in a rat model of surgery stress...
May 22, 2018: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
https://www.readbyqxmd.com/read/29534722/rpe-phagocytic-function-declines-in-age-related-macular-degeneration-and-is-rescued-by-human-umbilical-tissue-derived-cells
#2
George Inana, Christopher Murat, Weijun An, Xiang Yao, Ian R Harris, Jing Cao
BACKGROUND: Age-related macular degeneration (AMD) is a leading cause of blindness among the elderly characterized by retinal pigment epithelium (RPE) degeneration with accumulation of abnormal intracellular deposits (lipofuscin) and photoreceptor death. RPE is vital for the retina and integrity of photoreceptors through its phagocytic function which is closely linked to formation of lipofuscin through daily phagocytosis of discarded photoreceptor outer segments (POS). Although phagocytosis has been implicated in AMD, it has not been directly shown to be altered in AMD...
March 13, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29475373/inflammatory-bone-loss-associated-with-mfg-e8-deficiency-is-rescued-by-teriparatide
#3
Megan N Michalski, Anna L Seydel, Erica M Siismets, Laura E Zweifler, Amy J Koh, Benjamin P Sinder, J Ignacio Aguirre, Kamran Atabai, Hernan Roca, Laurie K McCauley
A prolonged increase in proinflammatory cytokines is associated with osteoporotic and autoimmune bone loss and, conversely, anti-inflammatory pathways are associated with protection against bone loss. Milk fat globule-epidermal growth factor (MFG-E)-8 is a glycoprotein that is proresolving, regulates apoptotic cell clearance, and has been linked to autoimmune disease and skeletal homeostasis. The role of MFG-E8 in the young vs. adult skeleton was determined in mice deficient in MFG-E8 (KO). In vivo, trabecular bone was similar in MFG-E8KO and wild-type (WT) mice at 6 and 16 wk, whereas 22 wk adult MFG-E8KO mice displayed significantly reduced trabecular BV/TV...
February 22, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29340071/hypoxia-inducible-factor-1%C3%AE-regulates-microglial-functions-affecting-neuronal-survival-in-the-acute-phase-of-ischemic-stroke-in-mice
#4
Seoyeon Bok, Young-Eun Kim, Youngsik Woo, Soeun Kim, Suk-Jo Kang, Yoontae Lee, Sang Ki Park, Irving L Weissman, G-One Ahn
Cells universally adapt to ischemic conditions by turning on a transcription factor hypoxia-inducible factor (HIF), in which its role is known to differ widely across many different types of cells. Given that microglia have been reported as an essential mediator of neuroinflammation in many brain diseases, we examined the role of HIF in microglia in the progression of an acute phase of ischemic stroke by challenging our novel strains of myeloid-specific Hif-1α or Hif-2α knockout (KO) mice created by Cre-loxP system via middle cerebral artery occlusion (MCAO)...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29277270/human-predecidual-stromal-cells-have-distinctive-characteristics-of-pericytes-cell-contractility-chemotactic-activity-and-expression-of-pericyte-markers-and-angiogenic-factors
#5
Raquel Muñoz-Fernández, Claudia de la Mata, Alejandro Prados, Ana Perea, María José Ruiz-Magaña, Tatiana Llorca, Pablo Fernández-Rubio, Osmany Blanco, Ana C Abadía-Molina, Enrique G Olivares
INTRODUCTION: Human decidual stromal cells (DSCs) play a key role in maternal-fetal interactions. Precursors of DSCs (preDSCs) localize around vessels in both the endometrium and decidua. Previous studies suggested a relationship between preDSCs and pericytes because these cells share a perivascular location, alpha smooth muscle actin (α-SM actin) expression and the ability to contract under the effects of cytokines. METHODS: To further study this relationship, we established 15 human preDSC lines and 3 preDSC clones...
January 2018: Placenta
https://www.readbyqxmd.com/read/29152651/age%C3%A2-related-differences-in-serum-mfg%C3%A2-e8-tgf%C3%A2-%C3%AE-1-and-correlation-to-the-severity-of-atherosclerosis-determined-by-ultrasound
#6
Huiying Zhao, Huanhuan Zhang, Xiujiao Qin
Atherosclerosis (AS) is an age‑related inflammatory disease. Globule‑epidermal growth factor‑8 (MFG‑E8) and transforming growth factor-β1 (TGF‑β1) are involved in the pathogenesis of AS. However, age‑related changes in circulating levels of MFG‑E8 and TGF‑β1, and their correlation with the severity of AS is not well‑characterized. In this study, we investigated age‑related changes in serum levels of MFG‑E8, TGF‑β1 and examined their association with the severity of AS. Sixty healthy volunteers were divided into young, middle‑age and old‑age groups...
December 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28967712/alterations-in-expression-of-endometrial-milk-fat-globule-egf-factor-8-mfg-e8-and-leukemia-inhibitory-factor-lif-in-patients-with-infertility-and-endometriosis
#7
Carla Regina Schmitz, Sergio Oehninger, Vanessa Krebs Genro, Neelima Chandra, Frank Lattanzio, Liang Yu, João Sabino Cunha-Filho
OBJECTIVE: The aim of this study was to compare the endometrial expression of milk fat globule-EGF factor 8 (MFG-E8), its receptor integrin αvβ3, and leukemia inhibitory factor (LIF) in patients with endometriosis and infertility and in healthy fertile patients during the window of implantation. METHODS: Five patients with peritoneal endometriosis and infertility (case group) and four healthy fertile patients (control group) were recruited. All patients were either diagnosed with or ruled out for endometriosis by laparoscopic surgery; the case group underwent surgery for infertility investigation and the control group for tubal ligation...
December 1, 2017: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/28923329/prognostic-correlation-between-mfg-e8-expression-level-and-colorectal-cancer
#8
Min Jia, Huaning Yao, Chao Chen, Yueqin Wang, Han Wang, Tianpen Cui, Jianhua Zhu
BACKGROUND AND AIMS: Colorectal cancer (CRC) is one of the leading causes of cancer-related death all over the world. Milk fat globule-epidermal growth factor (EGF)-factor VIII (MFG-E8) was found to be highly expressed in a variety of cancers. However its role in CRC is unclear. This study investigates the expression of MFG-E8 in CRC tissues and the correlation with clinicopathological features and prognosis in CRC patients. METHODS: The expression of MFG-E8 proteins was detected by immunohistochemical staining in 90 samples of CRC...
April 2017: Archives of Medical Research
https://www.readbyqxmd.com/read/28912710/key-aging-associated-alterations-in-primary-microglia-response-to-beta-amyloid-stimulation
#9
Cláudia Caldeira, Carolina Cunha, Ana R Vaz, Ana S Falcão, Andreia Barateiro, Elsa Seixas, Adelaide Fernandes, Dora Brites
Alzheimer's disease (AD) is characterized by a progressive cognitive decline and believed to be driven by the self-aggregation of amyloid-β (Aβ) peptide into oligomers and fibrils that accumulate as senile plaques. It is widely accepted that microglia-mediated inflammation is a significant contributor to disease pathogenesis; however, different microglia phenotypes were identified along AD progression and excessive Aβ production was shown to dysregulate cell function. As so, the contribution of microglia to AD pathogenesis remains to be elucidated...
2017: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/28884934/extracellular-vesicle-mediated-mfg-e8-localization-in-the-extracellular-matrix-is-required-for-its-integrin-dependent-function-in-mouse-mammary-epithelial-cells
#10
Takuya Ooishi, Daita Nadano, Tsukasa Matsuda, Kenzi Oshima
Milk fat globule-EGF factor 8 (MFG-E8) is a divalent-binding secretory protein possessing an Arg-Gly-Asp (RGD) motif and a phosphatidylserine (PS)-binding motif. This protein has been shown to be involved in mammary gland development and morphogenesis. Integrin-binding activity is necessary for these MFG-E8-dependent cell processes. Although the target cells and molecules of MFG-E8 in the cellular microenvironment are important to understand its physiological function, its localization is largely unclear. Here, we found that mouse MFG-E8 localized to the basal lamina of the mammary gland during involution...
October 2017: Genes to Cells: Devoted to Molecular & Cellular Mechanisms
https://www.readbyqxmd.com/read/28860093/tgf-%C3%AE-1-enhances-phagocytic-removal-of-neuron-debris-and-neuronal-survival-by-olfactory-ensheathing-cells-via-integrin-mfg-e8-signaling-pathway
#11
Yijian Li, Ting Zou, Langyue Xue, Zheng Qin Yin, Shujia Huo, Haiwei Xu
Olfactory ensheathing cells (OECs) have been shown to be a leading candidate in cell therapies for central nervous system (CNS) injuries and neurodegenerative diseases. Rapid clearance of neuron debris can promote neuronal survival and axonal regeneration in CNS injuries and neurodegenerative diseases. The phagocytic removal of neuron debris by OECs has been shown to contribute to neuronal outgrowth. However, the precise molecular and cellular mechanisms of phagocytic removal of neuron debris by OECs have not been explored...
August 30, 2017: Molecular and Cellular Neurosciences
https://www.readbyqxmd.com/read/28653875/mfg-e8-overexpression-promotes-colorectal-cancer-progression-via-akt-mmps-signalling
#12
Qiujie Zhao, Lin Xu, Xiaoyan Sun, Kai Zhang, Huimin Shen, Yanan Tian, Fengkai Sun, Yanqing Li
Several studies have revealed that MFG-E8 (milk fat globule-epidermal growth factor 8) is related to tumour development and progression. However, the relationship between MFG-E8 expression and metastasis in colorectal cancer patients and the role of MFG-E8 in colorectal cancer invasion and progression remain unknown. In this study, we performed immunohistochemistry and quantitative real-time polymerase chain reaction to assess MFG-E8 expression in colorectal cancer and adjacent non-cancerous tissues. Colorectal cancer RNAseq data from The Cancer Genome Atlas project were downloaded and MFG-E8 expression was analysed...
June 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28612258/downregulated-glia-interplay-and-increased-mirna-155-as-promising-markers-to-track-als-at-an%C3%A2-early-stage
#13
Carolina Cunha, Catarina Santos, Cátia Gomes, Adelaide Fernandes, Alexandra Marçal Correia, Ana Maria Sebastião, Ana Rita Vaz, Dora Brites
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease of unknown cause. Absence of specific targets and biomarkers compromise the development of new therapeutic strategies and of innovative tools to stratify patients and assess their responses to treatment. Here, we investigate changes in neuroprotective-neuroinflammatory actions in the spinal cord of SOD1 (G93A) mice, at presymptomatic and symptomatic stages to identify stage-specific biomarkers and potential targets. Results showed that in the presymptomatic stage, there are alterations in both astrocytes and microglia, which comprise decreased expression of GFAP and S100B and upregulation of GLT-1, as well as reduced expression of CD11b, M2-phenotype markers, and a set of inflammatory mediators...
June 13, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28601327/milk-fat-globule-epidermal-growth-factor-factor-viii-attenuates-sepsis-induced-acute-kidney-injury
#14
Cindy Cen, Monowar Aziz, Weng-Lang Yang, Mian Zhou, Jeffrey M Nicastro, Gene F Coppa, Ping Wang
BACKGROUND: Acute kidney injury (AKI) is most commonly caused by sepsis in critically ill patients, and it is associated with high morbidity and mortality. The pathophysiology of sepsis-induced AKI is generally accepted to include direct inflammatory injury, endothelial cell dysfunction, and apoptosis. Milk fat globule-epidermal growth factor-factor VIII (MFG-E8) is a secretory glycoprotein with a known role in the enhancement of apoptotic cell clearance and regulation of inflammation...
June 1, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28526301/mfg-e8-reprogramming-of-macrophages-promotes-wound-healing-by-increased-bfgf-production-and-fibroblast-functions
#15
Patrick Laplante, Frédéric Brillant-Marquis, Marie-Joëlle Brissette, Benjamin Joannette-Pilon, Romain Cayrol, Victor Kokta, Jean-François Cailhier
Macrophages are essential for tissue repair. They have a crucial role in cutaneous wound healing, participating actively in the inflammation phase of the process. Unregulated macrophage activation may, however, represent a source of excessive inflammation, leading to abnormal wound healing and hypertrophic scars. Our research group has shown that apoptotic endothelial and epithelial cells secrete MFG-E8, which has the ability to reprogram macrophages from an M1 (proinflammatory) to an M2 (anti-inflammatory, pro-repair) phenotype...
September 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28483607/interleukin-17a-promotes-lung-tumor-progression-through-neutrophil-attraction-to-tumor-sites-and-mediating-resistance-to-pd-1-blockade
#16
Esra A Akbay, Shohei Koyama, Yan Liu, Ruben Dries, Lauren E Bufe, Michael Silkes, Md Maksudul Alam, Dillon M Magee, Robert Jones, Masahisa Jinushi, Meghana Kulkarni, Julian Carretero, Xiaoen Wang, Tiquella Warner-Hatten, Jillian D Cavanaugh, Akio Osa, Atsushi Kumanogoh, Gordon J Freeman, Mark M Awad, David C Christiani, Raphael Bueno, Peter S Hammerman, Glenn Dranoff, Kwok-Kin Wong
INTRODUCTION: Proinflammatory cytokine interleukin-17A (IL-17A) is overexpressed in a subset of patients with lung cancer. We hypothesized that IL-17A promotes a protumorigenic inflammatory phenotype and inhibits antitumor immune responses. METHODS: We generated bitransgenic mice expressing a conditional IL-17A allele along with conditional Kras(G12D) and performed immune phenotyping of mouse lungs, a survival analysis, and treatment studies with antibodies either blocking programmed cell death 1 (PD-1) or IL-6 or depleting neutrophils...
August 2017: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/28466190/microglia-endocytose-amyloid-%C3%AE-through-the-binding-of-transglutaminase-2-and-milk-fat-globule-egf-factor-8-protein
#17
Kenji Kawabe, Katsura Takano, Mitsuaki Moriyama, Yoichi Nakamura
Activation of glial cells has been observed in neurodegenerative diseases including Alzheimer's disease (AD). Aggregation of amyloid β (Aβ) is profusely observed as characteristic pathology in AD brain. In our previous study using microglial cell line BV-2, tissue-type transglutaminase (TG2) was found to be involved in phagocytosis (Kawabe et al., in Neuroimmunomodulation 22(4):243-249, 2015; Kawabe et al., Neurochem Res 2017). In the present study, we examined whether TG2 and milk fat globule EGF factor 8 protein (MFG-E8), an adaptor protein promotes macrophage to engulf apoptotic cells, were involved in Aβ endocytosis...
January 2018: Neurochemical Research
https://www.readbyqxmd.com/read/28398652/brucella-abortus-activated-microglia-induce-neuronal-death-through-primary-phagocytosis
#18
Ana M Rodríguez, M Victoria Delpino, M Cruz Miraglia, Miriam M Costa Franco, Paula Barrionuevo, Vida A Dennis, Sergio C Oliveira, Guillermo H Giambartolomei
Inflammation has long been implicated as a contributor to pathogenesis in neurobrucellosis. Many of the associated neurocognitive symptoms of neurobrucellosis may be the result of neuronal dysfunction resulting from the inflammatory response induced by Brucella abortus infection in the central nervous system. In this manuscript, we describe an immune mechanism for inflammatory activation of microglia that leads to neuronal death upon B. abortus infection. B. abortus was unable to infect or harm primary cultures of mouse neurons...
July 2017: Glia
https://www.readbyqxmd.com/read/28343695/treatment-with-milk-fat-globule-epidermal-growth-factor-factor-8-mfg-e8-reduces-inflammation-and-lung-injury-in-neonatal-sepsis
#19
Laura W Hansen, Weng Lang Yang, Alexandra C Bolognese, Asha Jacob, Tracy Chen, Jose M Prince, Jeffrey M Nicastro, Gene F Coppa, Ping Wang
BACKGROUND: Sepsis remains one of the leading causes of infant death worldwide. It is characterized by uncontrolled inflammatory responses due to proven bacterial infection. Despite improvement in supportive care and the availability of effective antibiotics, no specific therapy targeting the dysregulated inflammatory response is available for neonatal sepsis. Milk fat globule epidermal growth factor-factor 8 (MFG-E8) is a secretory glycoprotein abundantly present in human milk. MFG-E8 suppresses the systemic inflammatory responses in adult murine injury models by improving the clearance of dying cells...
August 2017: Surgery
https://www.readbyqxmd.com/read/28302404/mesenchymal-stem-cells-derived-mfg-e8-accelerates-diabetic-cutaneous-wound-healing
#20
Akihiko Uchiyama, Sei-Ichiro Motegi, Akiko Sekiguchi, Chisako Fujiwara, Buddhini Perera, Sachiko Ogino, Yoko Yokoyama, Osamu Ishikawa
BACKGROUND: Diabetic wounds are intractable due to complex factors, such as the inhibition of angiogenesis, dysfunction of phagocytosis by macrophages and abnormal inflammatory responses. It is recognized that mesenchymal stem cells (MSCs) promote wound healing in diabetic mice. We previously demonstrated that MSCs produce large amounts of MFG-E8. OBJECT: The objective was to ascertain the role of MSCs-derived MFG-E8 in murine diabetic wounds. METHODS: MFG-E8 WT/KO MSCs or rMFG-E8 were subcutaneously injected around the wound in diabetic db/db mice, and wound areas were analyzed...
June 2017: Journal of Dermatological Science
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