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https://www.readbyqxmd.com/read/28109964/raman-spectrum-reveals-mesenchymal-stem-cells-inhibiting-hl60-cells-growth
#1
Xin Su, Shaoyin Fang, Daosen Zhang, Qinnan Zhang, Xiaoxu Lu, Jindong Tian, Jinping Fan, LiyunZhong
Though some research results reveals that Mesenchymal stem cells (MSCs) have the ability of inhibiting tumor cells proliferation, it remains controversial about the precise interaction mechanism during MSCs and tumor cells co-culture. In this study, combing Raman spectroscopic data and principle component analysis (PCA), the biochemical changes of MSCs or Human promyelocytic leukemia (HL60) cells during their co-culture were presented. The obtained results showed that some main Raman peaks of HL60 assigned to nucleic acids or proteins were greatly higher in intensity in the late stage of co-culture than those in the early stage of co-culture while they were still lower relative to the control group, implicating that the effect of MSCs inhibiting HL60 proliferation appeared in the early stage but gradually lost the inhibiting ability in the late stage of co-culture...
January 11, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28109148/-rat-bone-marrow-mesenchymal-stem-cells-promote-apoptosis-and-inhibit-proliferation-and-migration-of-rsc96-cells
#2
Yongbin Ma, Suohua Ge, Dan Zhou, Huanyan Zhang, Luyang Sun, Xuefeng Wang, Jianhua Su
Objective To investigate the effect of rat bone marrow mesenchymal stem cells (BMSCs) on the proliferation and migration of rat RSC96 Schwann cells in vitro. Methods BMSCs of Sprague Dawley (SD) rats were isolated by bone marrow cell adherent method. The morphology of the third generation of BMSCs was observed by inverted microscopy. The cell surface antigen makers CD19, CD34, CD73, CD105 were detected by flow cytometry. The third-passage BMSCs differentiated into osteoblasts and adipocytes after exposed to bone-inducing and lipid-inducing media for 3 and 2 weeks, respectively, and then were identified by oil red O and alkaline phosphatase staining...
February 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28109147/-co-culture-with-umbilical-cord-mesenchymal-stem-cells-promotes-the-synthesis-and-mechnism-of-milk-protein-in-bovine-mammary-epithelial-cells
#3
Yankun Zhao, Wei Shao, Chenglong Luo, Kaile Wu, Xiong Yu
Objective To explore the possible mechanism of umbilical cord mesenchymal stem cells (UCMSCs) regulating milk protein synthesis in bovine mammary gland epithelial cells (BMECs). Methods UCMSCs and BMECs were co-cultured by double-chamber Transwell(TM), and other BMECs were cultured alone as a control group. Insulin like growth factor 1 receptor (IGF-1R) inhibitor AG1024 was used to treat cells. IGF-1, β casein (CSN2) and κ casein (CSN3) content in the supernatants were determined by ELISA; the relative expression abundance of Janus kinase and signal transducer and activator of transcription factor (JAK/STAT) signaling pathway-related genes were detected by quantitative real-time PCR (qRT-PCR); and after the cells were treated with JAK2 signal blocker AG490, qRT-PCR was performed to test the relative expression abundance of CSN2 and CSN3 mRNAs...
February 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28108942/compartmentalized-culture-of-perivascular-stroma-and-endothelial-cells-in-a-microfluidic-model-of-the-human-endometrium
#4
Juan S Gnecco, Virginia Pensabene, David J Li, Tianbing Ding, Elliot E Hui, Kaylon L Bruner-Tran, Kevin G Osteen
The endometrium is the inner lining of the uterus. Following specific cyclic hormonal stimulation, endometrial stromal fibroblasts (stroma) and vascular endothelial cells exhibit morphological and biochemical changes to support embryo implantation and regulate vascular function, respectively. Herein, we integrated a resin-based porous membrane in a dual chamber microfluidic device in polydimethylsiloxane that allows long term in vitro co-culture of human endometrial stromal and endothelial cells. This transparent, 2-μm porous membrane separates the two chambers, allows for the diffusion of small molecules and enables high resolution bright field and fluorescent imaging...
January 20, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28108623/tumor-induced-stromal-stat1-accelerates-breast-cancer-via-deregulating-tissue-homeostasis
#5
Victoria R Zellmer, Patricia M Schnepp, Sarah L Fracci, Xuejuan Tan, Erin N Howe, Siyuan Zhang
: The tumor microenvironment (TME) is a dynamic tissue space in which the tumor exists, plays a significant role in tumor initiation, and is a key contributor in cancer progression; however, little is known about tumor-induced changes in the adjacent tissue stroma. Herein, tumor-induced changes in the TME were explored at the morphological and molecular level to further understand cancer progression. Tumor-adjacent mammary glands (TAGs) displayed altered branching morphology, expansion of myofibroblasts, and increased mammosphere formation, broadly suggesting a tumor-induced field effect...
January 20, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28108544/the-interplay-between-neutrophils-and-cd8-t-cells-improves-survival-in-human-colorectal-cancer
#6
Valeria Governa, Emanuele Trella, Valentina Mele, Luigi Tornillo, Francesca Amicarella, Eleonora Cremonesi, Maunele Giuseppe Muraro, Hui Xu, Raoul Droeser, Silvio Raffael Däster, Martin Bolli, Raffaele Rosso, Daniel Oertli, Serenella Eppenberger-Castori, Luigi Terracciano, Giandomenica Iezzi, Giulio C Spagnoli
PURPOSE: Tumor infiltration by different T lymphocyte subsets is known to be associated with favorable prognosis in colorectal cancer (CRC). Still debated is the role of innate immune system. We investigated clinical relevance, phenotypes and functional features of CRC infiltrating CD66b+ neutrophils and their crosstalk with CD8+ T cells. EXPERIMENTAL DESIGN: CD66b+ and CD8+ cell infiltration was analyzed by immunohistochemistry on a tissue microarray including >650 evaluable CRC samples...
January 20, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28108519/survival-of-acute-monocytic-leukemia-cells-is-driven-by-fatty-acid-oxidation-mediated-activation-of-ampk-in-bone-marrow-adipocytes
#7
Yoko Tabe, Shinichi Yamamoto, Kaori Saitoh, Kazumasa Sekihara, Norikazu Monma, Kazuho Ikeo, Kaoru Mogushi, Masato Shikami, Vivian R Ruvolo, Jo Ishizawa, Numsen Hail, Saiko Kazuno, Mamoru Igarashi, Hiromichi Matsushita, Yasunari Yamanaka, Hajime Arai, Isao Nagaoka, Takashi Miida, Yoshihide Hayashizaki, Marina Konopleva, Michael Andreeff
Leukemia cells in the bone marrow (BM) must meet the biochemical demands of increased cell proliferation by continually adapting to fluctuations in nutrient and oxygen availability. Thus, targeting metabolic abnormalities in leukemia cells located in the BM may provide an effective therapeutic strategy. In this study, we report the discovery of a metabolic role for BM adipocytes in supporting the growth of leukemic blasts. Preventing nutrient starvation-induced apoptosis of leukemic cells by BM adipocytes, as well as the metabolic and molecular mechanisms involved in this process, were investigated using various analytical techniques...
January 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28108514/somatic-ephrin-receptor-mutations-are-associated-with-metastasis-in-primary-colorectal-cancer
#8
Lucy Mathot, Snehangshu Kundu, Viktor Ljungström, Jessica Svedlund, Lotte Moens, Tom Adlerteg, Elin Falk-Sörqvist, Verónica Rendo, Claudia Bellomo, Markus Mayrhofer, Carme Cortina, Magnus Sundström, Patrick Micke, Johan Botling, Anders Isaksson, Aristidis Moustakas, Eduard Batlle, Helgi Birgisson, Bengt Glimelius, Mats Nilsson, Tobias Sjöblom
The contribution of somatic mutations to metastasis of colorectal cancers (CRC) is currently unknown. To find mutations involved in the CRC metastatic process, we performed deep mutational analysis of 676 genes in 107 stages II-IV primary CRC, of which half had metastasized. The mutation prevalence in the ephrin (Eph) family of tyrosine kinase receptors was ten-fold higher in primary tumors of metastatic CRC than in non-metastatic cases and preferentially occurred in stage III and IV tumours. Mutational analyses in situ confirmed expression of mutant Eph receptors...
January 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28108005/in-vitro-allogeneic-immune-cell-response-to-mesenchymal-stromal-cells-derived-from-human-adipose-in-patients-with-rheumatoid-arthritis
#9
P Usha Shalini, J V S Vidyasagar, Lakshmi Kumari Kona, Meenakshi Ponnana, Lakshmi Kiran Chelluri
We investigated the regulatory activity of human adipose-derived mesenchymal stromal cells (MSCs) (n=10) towards immune cells in a cohort of 84 rheumatoid arthritis (RA) patients, 36 apparently healthy controls. We co-cultured MSCs with lymphocyte subsets of T, B, and T regulatory cells (Tregs). Levels of the pro- and anti-inflammatory markers (tumor necrosis factor alpha (TNF-α), interferon gamma (IFN-γ), and interleukin-10 (IL-10)) were estimated in serum and co-culture supernatants. The study revealed a two-fold increase in the proportion of Tregs and an increased level of CD4(+)CD25(+)FoxP3...
January 12, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28107860/the-role-of-heme-oxygenase-1-in-pathogenesis-of-cerebral-malaria-in-the-co-culture-model-of-human-brain-microvascular-endothelial-cell-and-itg-plasmodium-falciparum-infected-red-blood-cells
#10
Pimwan Thongdee, Kesara Na-Bangchang
OBJECTIVE: To investigate the role of human host heme-oxygenase-1 (HO-1) in pathogenesis of cerebral malaria in the in vitro model. METHODS: The effect of human host HO-1 [human brain microvascular endothelial cell (HBMEC)] on hemoglobin degradation in the co-culture model of HBMEC and ITG Plasmodium falciparum-infected red cells (iRBC) through measurement of the enzymatic products iron and bilirubin. RESULTS: Following exposure to the HO-1 inducer CoPPIX at all concentrations, the HBMEC cells apoptosis occurred, which could be prominently observed at 15 μM of 3 h exposure...
January 2017: Asian Pacific Journal of Tropical Medicine
https://www.readbyqxmd.com/read/28107546/bone-marrow-stroma-protects-myeloma-cells-from-cytotoxic-damage-via-induction-of-the-oncoprotein-muc1
#11
Michal Bar-Natan, Dina Stroopinsky, Katarina Luptakova, Maxwell D Coll, Arie Apel, Hasan Rajabi, Athalia R Pyzer, Kristen Palmer, Michaela R Reagan, Myrna R Nahas, Rebecca Karp Leaf, Salvia Jain, Jon Arnason, Irene M Ghobrial, Kenneth C Anderson, Donald Kufe, Jacalyn Rosenblatt, David Avigan
Multiple myeloma (MM) is a lethal haematological malignancy that arises in the context of a tumour microenvironment that promotes resistance to apoptosis and immune escape. In the present study, we demonstrate that co-culture of MM cells with stromal cells results in increased resistance to cytotoxic and biological agents as manifested by decreased rates of cell death following exposure to alkylating agents and the proteosome inhibitor, bortezomib. To identify the mechanism of increased resistance, we examined the effect of the co-culture of MM cells with stroma cells, on expression of the MUC1 oncogene, known to confer tumour cells with resistance to apoptosis and necrosis...
January 20, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28107509/development-of-combining-of-human-bronchial-mucosa-models-with-xposeali%C3%A2-for-exposure-of-air-pollution-nanoparticles
#12
Jie Ji, Anna Hedelin, Maria Malmlöf, Vadim Kessler, Gulaim Seisenbaeva, Per Gerde, Lena Palmberg
BACKGROUND: Exposure to agents via inhalation is of great concerns both in workplace environment and in the daily contact with particles in the ambient air. Reliable human airway exposure systems will most likely replace animal experiment in future toxicity assessment studies of inhaled agents. METHODS: In this study, we successfully established a combination of an exposure system (XposeALI) with 3D models mimicking both healthy and chronic bronchitis-like mucosa by co-culturing human primary bronchial epithelial cells (PBEC) and fibroblast at air-liquid interface (ALI)...
2017: PloS One
https://www.readbyqxmd.com/read/28107184/tunneling-nanotubes-promote-intercellular-mitochondria-transfer-followed-by-increased-invasiveness-in-bladder-cancer-cells
#13
Jinjin Lu, Xiufen Zheng, Fan Li, Yang Yu, Zhong Chen, Zheng Liu, Zhihua Wang, Hua Xu, Weimin Yang
Intercellular transfer of organelles via tunneling nanotubes (TNTs) is a novel means of cell-to-cell communication. Here we demonstrate the existence of TNTs between co-cultured RT4 and T24 bladder cancer cells using light microscopy, fluorescence imaging, and scanning electron microscopy (SEM). Spontaneous unidirectional transfer of mitochondria from T24 to RT4 cells was detected using fluorescence imaging and flow cytometry. The distribution of mitochondria migrated from T24 cells was in good agreement with the original mitochondria in RT4 cells, which may imply mitochondrial fusion...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28106512/endoglucanase-and-xylanase-production-by-bacillus-sp-ar03-in-co-culture-glycosyl-hydrolases-by-bacillus-sp-ar03-in-co-culture
#14
Johan S Hero, José H Pisa, Nora I Perotti, Cintia M Romero, María A Martínez
The behaviour of three isolates retrieved from different cellulolytic consortia, Bacillus sp. AR03, Paenibacillus sp. AR247 and Achromobacter sp. AR476-2, were examined individually and as co-cultures in order evaluate their ability to produce extracellular cellulases and xylanases. Utilizing a peptone-based medium supplemented with carboxymethyl cellulose (CMC), an increase estimated of 1.30 and 1.50 times was obtained by the co-culture containing the strains AR03 and AR247, with respect to enzyme titles registered by their individual cultivation...
January 20, 2017: Preparative Biochemistry & Biotechnology
https://www.readbyqxmd.com/read/28105983/effect-of-bone-marrow-aspirate-concentrate-platelet-rich-plasma-on-tendon-derived-stem-cells-and-rotator-cuff-tendon-tear
#15
Sun Jeong, Da Hyun, Jong Wook, Silvia Park, Sang Jun
Bone marrow aspirate concentrates (BMACs) and platelet-rich plasma (PRP) are good sources to control the differentiation of tendon derived stem cells (TDSCs) but there has been no study about the effect of BMAC-PRP complex on TDSCs and tendinopathy. The aim of this study was to investigate the effect of BMAC-PRP on the TDSCs and to find the therapeutic effect of BMAC-PRP on the rotator cuff tendon tear. Chondrogenic and osteogenic potential of TDSCs decreased, but adipogenic potential of TDSCs revealed no significant difference when they were co-cultured with BMAC-PRP...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105982/human-umbilical-cord-mesenchymal-stem-cells-inhibit-t-follicular-helper-cell-expansion-through-the-activation-of-inos-in-lupus-prone-b6-mrl-faslpr-mice
#16
Zhuoya Zhang, Ruihai Feng, Lingying Niu, Saisai Huang, Wei Deng, Bingyu Shi, Genhong Yao, Weiwei Chen, Xiaojun Tang, Xiang Gao, Xuebing Feng, Lingyun Sun
The aberrant generation or activation of T follicular helper (Tfh) cells contributes to the pathogenesis of systemic lupus erythematosus (SLE), yet little is known about how these cells are regulated. In this study, we demonstrated that the frequency of Tfh cells was increased in lupus-prone B6.MRL-<em>Fas<sup>lpr</sup></em> (B6.<em>lpr</em>) mice and positively correlated to plasma cell proportions and serum total IgG as well as anti-dsDNA antibody levels. Transplantation of human umbilical cord mesenchymal stem cells (UC-MSCs) ameliorated lupus symptoms in B6...
January 20, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28105626/-effect-of-polyunsaturated-fatty-acids-%C3%AF-3-and-%C3%AF-6-on-angiogenesis-formation-in-human-gastric-cancer
#17
Jiachi Ma, Yuntao Ma, Tiankang Guo, Quan Chen, Yiping Li, He Su, Xiaochang Chen, Xiaodan Zhao, Qinjin Guo, Jianbo Qi
OBJECTIVE: To investigate the effects of polyunsaturated fatty acids (PUFA) ω-3 and ω-6, and their middle metabolites PGE2 and PGE3 on angiogenesis formation of gastric cancer, and to explore associated mechanism. METHODS: The effects of ω-3, ω-6, PGE2, PGE3 on the proliferation and migration of human umbilical vein endothelial cell (HUVEC) were measured by proliferation and migration assay respectively. The angiogenesis assay in vivo was used to measure the effects of ω-3, ω-6, PGE2 and PGE3 on neovascularization...
January 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28105230/dendritic-cell-activated-cytokine-induced-killer-cell-mediated-immunotherapy-is-safe-and-effective-for-cancer-patients-65-years-old
#18
Yanfeng Liu, Haibo Liu, Hausheng Liu, Pengcheng He, Jing Li, Xin Liu, Limei Chen, Mengchang Wang, Jiejing Xi, Huaiyu Wang, Haitao Zhang, Ying Zhu, Wei Zhu, Jing Ning, Caili Guo, Chunhong Sun, Mei Zhang
Individuals >65 years old account for a large proportion of cancer patients, and usually have poor prognoses due to relative weaker physiological function and lower drug tolerance. To characterize the efficacy and safety of dendritic cell (DC)-activated cytokine-induced killer cell (CIK)-mediated treatment, and develop an adoptive immunotherapy for cancer patients >65 years old, a retrospective study was performed in 58 cancer sufferers who received 1-4 cycles of DC-activated CIK (DC-CIK) treatment and evaluated the response (tumor remission rate) and toxicity (side effects to the treatment)...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28104533/antimicrobial-activity-of-stable-hemiaminals-against-porphyromonas-gingivalis
#19
Teresa Olczak, Michał Śmiga, Anna Kwiecień, Marcin Bielecki, Robert Wróbel, Mariusz Olczak, Zbigniew Ciunik
Porphyromonas gingivalis is a major etiologic agent and a key pathogen responsible for the development and progression of chronic periodontitis. Controlling the number of periodontal pathogens is one of the primary actions for maintaining oral health; therefore, active compounds with a capacity to exert antimicrobial activity have received considerable attention as they may represent potential new therapeutic agents for the treatment of chronic periodontitis. Heterocyclic compounds possessing 1,2,4- or 1,2,3-triazoles are known for several biological activities, including antibacterial properties...
January 16, 2017: Anaerobe
https://www.readbyqxmd.com/read/28104423/the-safe-enterocin-dd14-is-a-leaderless-two-peptide-bacteriocin-with-anti-clostridium-perfringens-activity
#20
Delphine L Caly, Mickaël Chevalier, Christophe Flahaut, Benoit Cudennec, Ahmed Khassaf Al Atya, Gabrielle Chataigné, Romain D'Inca, Eric Auclair, Djamel Drider
Enterococcus faecalis 14, a strain previously isolated from meconium, displayed activity against four Clostridium perfringens isolates when co-cultured on agar plates. The anti-Clostridium activity was ascribed to the production of enterocin DD14, which was subsequently purified. The minimum inhibitory concentration (MIC) of enterocin DD14 against one collection strain and one clinical C. perfringens strain was determined at 50 µg/mL. Furthermore, using the intestinal epithelial cell line IPEC-1, it was shown that E...
January 16, 2017: International Journal of Antimicrobial Agents
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