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https://www.readbyqxmd.com/read/28214990/interactions-between-mesenchymal-stem-cells-and-the-immune-system
#1
REVIEW
Na Li, Jinlian Hua
In addition to being multi-potent, mesenchymal stem cells (MSCs) possess immunomodulatory functions that have been investigated as potential treatments in various immune disorders. MSCs can robustly interact with cells of the innate and adaptive immune systems, either through direct cell-cell contact or through their secretome. In this review, we discuss current findings regarding the interplay between MSCs and different immune cell subsets. We also draw attention to the mechanisms involved.
February 18, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28212753/the-trail-induced-cancer-secretome-promotes-a-tumor-supportive-immune-microenvironment-via-ccr2
#2
Torsten Hartwig, Antonella Montinaro, Silvia von Karstedt, Alexandra Sevko, Silvia Surinova, Ankur Chakravarthy, Lucia Taraborrelli, Peter Draber, Elodie Lafont, Frederick Arce Vargas, Mona A El-Bahrawy, Sergio A Quezada, Henning Walczak
Tumor necrosis factor (TNF)-related apoptosis-inducing ligand (TRAIL) is known for specifically killing cancer cells, whereas in resistant cancers, TRAIL/TRAIL-R can promote metastasis via Rac1 and PI3K. It remains unknown, however, whether and to what extent TRAIL/TRAIL-R signaling in cancer cells can affect the immune microenvironment. Here we show that TRAIL-triggered cytokine secretion from TRAIL-resistant cancer cells is FADD dependent and identify the TRAIL-induced secretome to drive monocyte polarization to myeloid-derived suppressor cells (MDSCs) and M2-like macrophages...
February 16, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28209124/rna-seq-and-metabolomic-analyses-of-akt1-mediated-muscle-growth-reveals-regulation-of-regenerative-pathways-and-changes-in-the-muscle-secretome
#3
Chia-Ling Wu, Yoshinori Satomi, Kenneth Walsh
BACKGROUND: Skeletal muscle is a major regulator of systemic metabolism as it serves as the major site for glucose disposal and the main reservoir for amino acids. With aging, cachexia, starvation, and myositis, there is a preferential loss of fast glycolytic muscle fibers. We previously reported a mouse model in which a constitutively-active Akt transgene is induced to express in a subset of muscle groups leading to the hypertrophy of type IIb myofibers with an accompanying increase in strength...
February 16, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28202731/microfluidic-droplet-platform-for-ultrahigh-throughput-single-cell-screening-of-biodiversity
#4
Stanislav S Terekhov, Ivan V Smirnov, Anastasiya V Stepanova, Tatyana V Bobik, Yuliana A Mokrushina, Natalia A Ponomarenko, Alexey A Belogurov, Maria P Rubtsova, Olga V Kartseva, Marina O Gomzikova, Alexey A Moskovtsev, Anton S Bukatin, Michael V Dubina, Elena S Kostryukova, Vladislav V Babenko, Maria T Vakhitova, Alexander I Manolov, Maja V Malakhova, Maria A Kornienko, Alexander V Tyakht, Anna A Vanyushkina, Elena N Ilina, Patrick Masson, Alexander G Gabibov, Sidney Altman
Ultrahigh-throughput screening (uHTS) techniques can identify unique functionality from millions of variants. To mimic the natural selection mechanisms that occur by compartmentalization in vivo, we developed a technique based on single-cell encapsulation in droplets of a monodisperse microfluidic double water-in-oil-in-water emulsion (MDE). Biocompatible MDE enables in-droplet cultivation of different living species. The combination of droplet-generating machinery with FACS followed by next-generation sequencing and liquid chromatography-mass spectrometry analysis of the secretomes of encapsulated organisms yielded detailed genotype/phenotype descriptions...
February 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28198360/secreted-clic3-drives-cancer-progression-through-its-glutathione-dependent-oxidoreductase-activity
#5
Juan R Hernandez-Fernaud, Elena Ruengeler, Andrea Casazza, Lisa J Neilson, Ellie Pulleine, Alice Santi, Shehab Ismail, Sergio Lilla, Sandeep Dhayade, Iain R MacPherson, Iain McNeish, Darren Ennis, Hala Ali, Fernanda G Kugeratski, Heba Al Khamici, Maartje van den Biggelaar, Peter V E van den Berghe, Catherine Cloix, Laura McDonald, David Millan, Aoisha Hoyle, Anna Kuchnio, Peter Carmeliet, Stella M Valenzuela, Karen Blyth, Huabing Yin, Massimiliano Mazzone, Jim C Norman, Sara Zanivan
The secretome of cancer and stromal cells generates a microenvironment that contributes to tumour cell invasion and angiogenesis. Here we compare the secretome of human mammary normal and cancer-associated fibroblasts (CAFs). We discover that the chloride intracellular channel protein 3 (CLIC3) is an abundant component of the CAF secretome. Secreted CLIC3 promotes invasive behaviour of endothelial cells to drive angiogenesis and increases invasiveness of cancer cells both in vivo and in 3D cell culture models, and this requires active transglutaminase-2 (TGM2)...
February 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28196878/global-characterization-of-protein-secretion-from-human-macrophages-following-non-canonical-caspase-4-5-inflammasome-activation
#6
Martina B Lorey, Katariina Rossi, Kari K Eklund, Tuula A Nyman, Sampsa Matikainen
Gram-negative bacteria are associated with a wide spectrum of infectious diseases in humans. Inflammasomes are cytosolic protein complexes that are assembled when the cell encounters pathogens or other harmful agents. The non-canonical caspase-4/5 inflammasome is activated by gram-negative bacteria-derived lipopolysaccharide (LPS) and by endogenous oxidized phospholipids. Protein secretion is a critical component of the innate immune response. Here we have used label-free quantitative proteomics to characterize global protein secretion in response to non-canonical inflammasome activation upon intracellular LPS recognition in human primary macrophages...
February 14, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28194905/a-proinflammatory-secretome-mediates-the-impaired-immunopotency-of-human-mesenchymal-stromal-cells-in-elderly-patients-with-atherosclerosis
#7
Özge Kizilay Mancini, Maximilien Lora, Dominique Shum-Tim, Stephanie Nadeau, Francis Rodier, Inés Colmegna
Inflammation plays a pivotal role in the initiation and progression of atherosclerosis (ATH). Due to their potent immunomodulatory properties, mesenchymal stromal cells (MSCs) are evaluated as therapeutic tools in ATH and other chronic inflammatory disorders. Aging reduces MSCs immunopotency potentially limiting their therapeutic utility. The mechanisms that mediate the effect of age on MSCs immune-regulatory function remain elusive and are the focus of this study. Human adipose tissue-derived MSCs were isolated from patients undergoing coronary artery bypass graft surgery...
February 14, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28191785/impact-of-the-secretome-of-human-mesenchymal-stem-cells-on-brain-structure-and-animal-behavior-in-a-rat-model-of-parkinson-s-disease
#8
Fábio G Teixeira, Miguel M Carvalho, Krishna M Panchalingam, Ana J Rodrigues, Bárbara Mendes-Pinheiro, Sandra Anjo, Bruno Manadas, Leo A Behie, Nuno Sousa, António J Salgado
Research in the last decade strongly suggests that mesenchymal stem cell (MSC)-mediated therapeutic benefits are mainly due to their secretome, which has been proposed as a possible therapeutic tool for the treatment of Parkinson's disease (PD). Indeed, it has been shown that the MSC secretome increases neurogenesis and cell survival, and has numerous neuroprotective actions under different conditions. Additionally, using dynamic culturing conditions (through computer-controlled bioreactors) can further modulate the MSC secretome, thereby generating a more potent neurotrophic factor cocktail (i...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28191776/clinical-grade-isolated-human-kidney-perivascular-stromal-cells-as-an-organotypic-cell-source-for-kidney-regenerative-medicine
#9
Daniëlle G Leuning, Marlies E J Reinders, Joan Li, Anna J Peired, Ellen Lievers, Hetty C de Boer, Willem E Fibbe, Paola Romagnani, Cees van Kooten, Melissa H Little, Marten A Engelse, Ton J Rabelink
Mesenchymal stromal cells (MSCs) are immunomodulatory and tissue homeostatic cells that have shown beneficial effects in kidney diseases and transplantation. Perivascular stromal cells (PSCs) identified within several different organs share characteristics of bone marrow-derived MSCs (BM-MSCs). These PSCs may also possess tissue-specific properties and play a role in local tissue homeostasis. We hypothesized that human kidney-derived PSCs (hkPSCs) would elicit improved kidney repair in comparison with BM-MSCs...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28188790/the-role-of-elk3-to-regulate-peritumoral-lymphangiogenesis-and-vegf-c-production-in-triple-negative-breast-cancer-cells
#10
Nuri Oh, Ji-In Park, Ji-Hoon Park, Kwang-Soo Kim, Dong Ryul Lee, Kyung-Soon Park
Tumor-induced lymphangiogenesis, a major conduit for cancer cell dissemination from the primary tumor site to lymph nodes and beyond, eventually leads to metastasis in cancer patients. Given the recent evidence revealing that the suppression of ELK3 inhibits the metastasis of triple-negative breast cancer cells, we aimed to study the underlying mechanism of impaired metastasis in ELK3-suppressed MDA-MB-231 cells (ELK3 KD) with regard to lymphangiogenesis. We found that the secretome of ELK3 KD cells inhibited tube formation, whereas it promoted the migration and invasion of lymphatic endothelial cells (LECs) in vitro...
February 8, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28188344/skeletal-muscle-secretome-in-duchenne-muscular-dystrophy-a-pivotal-anti-inflammatory-role-of-adiponectin
#11
S Lecompte, M Abou-Samra, R Boursereau, L Noel, S M Brichard
BACKGROUND: Persistent inflammation exacerbates the progression of Duchenne muscular dystrophy (DMD). The hormone, adiponectin (ApN), which is decreased in the metabolic syndrome, exhibits anti-inflammatory properties on skeletal muscle and alleviates the dystrophic phenotype of mdx mice. Here, we investigate whether ApN retains its anti-inflammatory action in myotubes obtained from DMD patients. We unravel the underlying mechanisms by studying the secretome and the early events of ApN...
February 10, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28187376/genome-wide-analysis-of-excretory-secretory-proteins-in-root-knot-nematode-meloidogyne-incognita-provides-potential-targets-for-parasite-control
#12
Shachi Gahoi, Budhayash Gautam
The root-knot nematode, Meloidogyne incognita causes significant damage to various economically important crops. Infection is associated with secretion of effector proteins into host cytoplasm and interference with host innate immunity. To combat this infection, the identification and functional annotations of Excretory/Secretory (ES) proteins serve as a key to produce durable control measures. The identification of ES proteins through experimental methods are expensive and time consuming while bioinformatics approaches are cost-effective by prioritizing the experimental analysis of potential drug targets for parasitic diseases...
February 1, 2017: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/28186467/effect-of-the-microenvironment-on-mesenchymal-stem-cells-paracrine-signalling-opportunities-to-engineer-the-therapeutic-effect
#13
Gina Diamanta Kusuma, James Carthew, Rebecca Lim, Jessica Ellen Frith
Cues from the extracellular environment, including physical stimuli, are well known to affect mesenchymal stem cells (MSCs) properties in terms of proliferation and differentiation. Many therapeutic strategies are now targeting this knowledge to increase the efficacy of cell therapies, typically employed to repair tissue functions in the event of injury, either by direct engraftment into the target tissue or differentiation into mature tissues. However, it is now envisioned that harnessing the repertoire of factors secreted by MSCs (termed the secretome) may provide an alternate to these cell therapies...
February 10, 2017: Stem Cells and Development
https://www.readbyqxmd.com/read/28182400/an-engineered-survival-selection-assay-for-extracellular-protein-expression-uncovers-hypersecretory-phenotypes-in-escherichia-coli
#14
Aravind Natarajan, Charles H Haitjema, Robert Lee, Jason T Boock, Matthew P DeLisa
The extracellular expression of recombinant proteins using laboratory strains of Escherichia coli is now routinely achieved using naturally secreted substrates, such as YebF or the osmotically inducible protein Y (OsmY), as carrier molecules. However, secretion efficiency through these pathways needs to be improved for most synthetic biology and metabolic engineering applications. To address this challenge, we developed a generalizable survival-based selection strategy that effectively couples extracellular protein secretion to antibiotic resistance and enables facile isolation of rare mutants from very large populations (i...
February 16, 2017: ACS Synthetic Biology
https://www.readbyqxmd.com/read/28181005/the-pseudomonas-aeruginosa-exoenzyme-y-a-promiscuous-nucleotidyl-cyclase-edema-factor-and-virulence-determinant
#15
K Adam Morrow, Dara W Frank, Ron Balczon, Troy Stevens
Exoenzyme Y (ExoY) was identified as a component of the Pseudomonas aeruginosa type 3 secretion system secretome in 1998. It is a common contributor to the arsenal of type 3 secretion system effectors, as it is present in approximately 90% of Pseudomonas isolates. ExoY has adenylyl cyclase activity that is dependent upon its association with a host cell cofactor. However, recent evidence indicates that ExoY is not just an adenylyl cyclase; rather, it is a promiscuous cyclase capable of generating purine and pyrimidine cyclic nucleotide monophosphates...
February 9, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28177716/a-role-for-maternally-derived-myokines-to-optimize-placental-function-and-fetal-growth-across-gestation
#16
Chantal Dubé, Céline Aguer, Kristi Adamo, Shannon Bainbridge
Exercise during pregnancy is associated with improved health outcomes for both mother and baby, including a reduced risk of future obesity and susceptibility to chronic diseases. Overwhelming evidence demonstrates a protective effect of maternal exercise against fetal birth weight extremes, reducing the rates of both large- and small-for-gestational-age infants. It is speculated that this protective effect is mediated in part through exercise-induced regulation of maternal physiology and placental development/function...
January 17, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/28167114/an-antisense-peptide-nucleic-acid-against-pseudomonas-aeruginosa-inhibiting-bacterial-induced-inflammatory-responses-in-the-cystic-fibrosis-ib3-1-cellular-model-system
#17
Giulia Montagner, Valentino Bezzerri, Giulio Cabrini, Enrica Fabbri, Monica Borgatti, Ilaria Lampronti, Alessia Finotti, Peter E Nielsen, Roberto Gambari
Discovery of novel antimicrobial agents against Pseudomonas aeruginosa able to inhibit bacterial growth as well as the resulting inflammatory response is a key goal in cystic fibrosis research. We report in this paper that a peptide nucleic acid (PNA3969) targeting the translation initiation region of the essential acpP gene of P. aeruginosa, and previously shown to inhibit bacterial growth, concomitantly also strongly inhibits PAO1 induced up-regulation of the pro-inflammatory markers IL-8, IL-6, G-CSF, IFN-γ, IP-10, MCP-1 and TNF-α in IB3-1 cystic fibrosis cells infected by P...
February 3, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28160560/exosome-secretome-and-mediated-signaling-in-breast-cancer-patients-with-nontuberculous-mycobacterial-disease
#18
Julie V Philley, Anbarasu Kannan, David E Griffith, Megan S Devine, Jeana L Benwill, Richard J Wallace Jr, Barbara A Brown-Elliott, Foram Thakkar, Varsha Taskar, James G Fox, Ammar Alqaid, Hernaina Bains, Sudeep Gupta, Santanu Dasgupta
Bronchiectasis Nontuberculous mycobacterium (NTMnb) infection is an emerging health problem in breast cancer (BCa) patients. We measured sera exosome proteome in BCa-NTMnb subjects and controls by Mass Spectroscopy. Extracellular matrix protein 1 (ECM1) was detected exclusively in the circulating exosomes of 82% of the BCa-NTMnb cases. Co-culture of ECM1+ exosomes with normal human mammary epithelial cells induced epithelial to mesenchymal transition accompanied by increased Vimentin/CDH1 expression ratio and Glutamate production...
February 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28146372/the-isolation-of-morphologically-intact-and-biologically-active-extracellular-vesicles-from-the-secretome-of-cancer-associated-adipose-tissue
#19
Sarah Jeurissen, Glenn Vergauwen, Jan Van Deun, Lore Lapeire, Victoria Depoorter, Ilkka Miinalainen, Raija Sormunen, Rudy Van den Broecke, Geert Braems, Véronique Cocquyt, Hannelore Denys, An Hendrix
Breast cancer cells closely interact with different cell types of the surrounding adipose tissue to favor invasive growth and metastasis. Extracellular vesicles (EVs) are nanometer-sized vesicles secreted by different cell types that shuttle proteins and nucleic acids to establish cell-cell communication. To study the role of EVs released by cancer-associated adipose tissue in breast cancer progression and metastasis a standardized EV isolation protocol that obtains pure EVs and maintains their functional characteristics is required...
February 1, 2017: Cell Adhesion & Migration
https://www.readbyqxmd.com/read/28143451/distinct-prostate-cancer-related-mrna-cargo-in-extracellular-vesicle-subsets-from-prostate-cell-lines
#20
Elisa Lázaro-Ibáñez, Taral R Lunavat, Su Chul Jang, Carmen Escobedo-Lucea, Jorge Oliver-De La Cruz, Pia Siljander, Jan Lötvall, Marjo Yliperttula
BACKGROUND: Multiple types of extracellular vesicles (EVs), including microvesicles (MVs) and exosomes (EXOs), are released by all cells constituting part of the cellular EV secretome. The bioactive cargo of EVs can be shuffled between cells and consists of lipids, metabolites, proteins, and nucleic acids, including multiple RNA species from non-coding RNAs to messenger RNAs (mRNAs). In this study, we hypothesized that the mRNA cargo of EVs could differ based on the EV cellular origin and subpopulation analyzed...
February 1, 2017: BMC Cancer
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