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https://www.readbyqxmd.com/read/28919298/mxra5-is-decreased-in-preeclampsia-and-affects-trophoblast-cell-invasion-through-the-mapk-pathway
#1
Lan Ding, Shaocong Li, Yanshang Zhang, Junfeng Gai, Jianfang Kou
Preeclampsia causes gestational failure in a significant number of women annually. Insufficient trophoblast cell invasion plays an essential role in preeclampsia pathogenesis. Matrix-remodeling associated 5 (MXRA5) is a proteoglycan involved in adhesion and matrix remodeling. This study sought to explore the role of MXRA5 in trophoblast cell invasion. Preeclamptic villi were obtained for the delineation of MXRA5 expression. Specific MXRA5 siRNA and pcDNA3.1/MXRA5 were used to manipulate MXRA5 expression in HTR-8/SVneo...
September 14, 2017: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/28916296/folate-targeted-amphiphilic-cyclodextrin-nanoparticles-incorporating-a-fusogenic-peptide-deliver-therapeutic-sirna-and-inhibit-the-invasive-capacity-of-3d-prostate-cancer-tumours
#2
James C Evans, Meenakshi Malhotra, Katrina Sweeney, Raphael Darcy, Colleen C Nelson, Brett G Hollier, Caitriona M O'Driscoll
The main barrier to the development of an effective RNA interference (RNAi) therapy is the lack of a suitable delivery vector. Modified cyclodextrins have emerged in recent years for the delivery of siRNA. In the present study, a folate-targeted amphiphilic cyclodextrin was formulated using DSPE-PEG5000-folate to target prostate cancer cells. The fusogenic peptide GALA was included in the formulation to aid in the endosomal release of siRNA. Targeted nanoparticles were less than 200nm in size with a neutral surface charge...
September 12, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28915407/differentiation-and-sarcomere-formation-in-skeletal-myocytes-directly-prepared-from-human-induced-pluripotent-stem-cells-using-a-sphere-based-culture
#3
Saowanee Jiwlawat, Eileen Lynch, Jennifer Glaser, Ivy Smit-Oistad, Jeremy Jeffrey, Jonathan M Van Dyke, Masatoshi Suzuki
Human induced-pluripotent stem cells (iPSCs) are a promising resource for propagation of myogenic progenitors. Our group recently reported a unique protocol for the derivation of myogenic progenitors directly (without genetic modification) from human pluripotent cells using free-floating spherical culture. Here we expand our previous efforts and attempt to determine how differentiation duration, culture surface coatings, and nutrient supplements in the medium influence progenitor differentiation and formation of skeletal myotubes containing sarcomeric structures...
August 1, 2017: Differentiation; Research in Biological Diversity
https://www.readbyqxmd.com/read/28910489/nucleoside-nucleotide-reverse-transcriptase-inhibitors-attenuate-angiogenesis-and-lymphangiogenesis-by-impairing-receptor-tyrosine-kinases-signalling-in-endothelial-cells
#4
Lin Song, Sha Ding, Zhen Ge, Xiaolong Zhu, Cong Qiu, Yuewen Wang, Enyin Lai, Weijun Yang, Yi Sun, Samson A Chow, Luyang Yu
BACKGROUND AND PURPOSE: Cardiovascular disease associated with antiretroviral therapy (ART) has become a major clinical challenge for HIV-positive patients. However, the role of ART in blood vessel growth is largely unknown. Here, we examined an integral component of ART, nucleoside/nucleotide reverse transcriptase inhibitors (NRTIs), and investigated their effects on key microvascular functions, including angiogenesis and lymphangiogenesis. EXPERIMENTAL APPROACH: The angiogenesis/lymphangiogenesis capability of endothelial cells (ECs) was evaluated using migration, proliferation and tube formation assays in vitro, and mouse ear and Matrigel plug assays in vivo...
September 14, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28892098/correlation-between-e-cadherin-interactions-survivin-expression-and-apoptosis-in-mdck-and-ts-src-mdck-cell-culture-models
#5
Janne Capra, Sinikka Eskelinen
Survivin, a member of inhibitor of apoptosis (IAP) protein family, is a multifunctional protein expressed in most cancers. In addition to inhibition of apoptosis, it regulates proliferation and promotes migration. Its presence and function in cells is strongly regulated via transcription factors, intracellular localization, and degradation. We analyzed the presence of survivin at protein level in various culture environments and under activation of Src tyrosine kinase in epithelial canine kidney MDCK cells in order to elucidate factors controlling survivin 'lifespan'...
September 11, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28889753/silencing-of-bach1-inhibits-invasion-and-migration-of-prostate-cancer-cells-by-altering-metastasis-related-gene-expression
#6
Neda Shajari, Sadaf Davudian, Tohid Kazemi, Behzad Mansoori, Shima Salehi, Vahid Khaze Shahgoli, Dariush Shanehbandi, Ali Mohammadi, Pascal H G Duijf, Behzad Baradaran
BACKGROUND: Cancer lethality is mainly caused by metastasis. Therefore, understanding the nature of the genes involved in this process has become a priority. BACH1, a basic leucine zipper transcription factor, has been shown to transcriptionally regulate expression of a range of genes that are associated with breast cancer metastasis. However, the exact role and the underlying molecular mechanism of BACH1 in prostate cancer remain unclear. This study aims to explore the expression of BACH1 in prostate cancer tissues and the effect of BACH1 suppression on prostate cancer cell behavior...
September 11, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28887504/macrophages-unlock-progression-of-breast-cancer-cells-experiencing-matrigel-segregation-in-transplantation-models
#7
Misa Ogura, Victoria L Bridgeman, Ilaria Malanchi
Basement membrane matrix proteins, such as matrigel, are able to improve the efficiency of tumour transplantation. This assay represents the gold standard to measure tumour initiation potential in vivo of a limited number of cancer cells. However, in culture conditions, matrigel directly signals to cancer cells altering their phenotype. We here investigate how matrigel influences the tumour reconstitution dynamics of breast cancer cells in vivo. This is particularly relevant in the setting of limiting dilution assay where cells are transplanted in a relatively high amount of Matrigel...
September 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28887108/new-approach-for-the-derivation-of-melanocytes-from-induced-pluripotent-stem-ips-cells
#8
Tamihiro Kawakami, Tatsuro Okano, Sora Takeuchi, Kayoko Osumi, Yoshinao Soma, Munenari Itoh, Tomohisa Hirobe, Kowichi Jimbow
Induced pluripotent stem (iPS) cells have the ability to differentiate into multiple cell types in the body and have an unlimited growth potential. However, iPS cell-derived melanocytes produced by existing protocols have significant limitations in developing novel strategies for regenerative medicine and cell therapies of pigmentation disorders in humans, because they involve culture in media containing fetal bovine serum (FBS) and non-physiologic agents. In this study, we established a new in vitro approach to generate iPS cell-derived human melanocytes which have higher proliferation rates and increased melanin production compared to melanocytes prepared by previously reported approaches...
September 5, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28886265/microvesicles-releasing-by-oral-cancer-cells-enhance-endothelial-cell-angiogenesis-via-shh-rhoa-signaling-pathway
#9
Xiao Huaitong, Feng Yuanyong, Tao Yueqin, Zhao Peng, Shang Wei, Song Kai
The present study aimed to investigate the significance of hedgehog signaling pathway in association with clinicopathology parameters and its effect on angiogenesis in oral squamous cell carcinoma (OSCC). The expression of Sonic Hh (Shh) and Gli1 were done on primary tumors and metastatic lymph nodes in OSCC samples from 80 patients by immunohistochemical analysis. The western blot was used to examine the expression of Shh in OSCC cell lines and OSCC-derived microvesicles (MVs). The role of Shh carried by MVs to induce endothelial cell angiogenesis was further investigated by matrigel assay...
September 8, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/28885729/leptin-induces-matrix-metalloproteinase-7-expression-to-promote-ovarian-cancer-cell-invasion-by-activating-erk-and-jnk-pathways
#10
Ahmad Ghasemi, Seyed Isaac Hashemy, Mahmoud Aghaei, Mojtaba Panjehpour
Leptin, an adipokine secreted by adipose tissue, induces cell invasion and metastasis. MMP7 is a member of the matrix metalloproteinase family that plays an important role in cell invasion. Here we evaluate the possible role and underlying mechanism of MMP7 in the leptin- mediated cell invasion in ovarian cancer cell lines. All experiments were carried out in cultured SKOV3, OVCAR3 and CaoV-3 ovarian cell lines. MMP7 expression was determined using the western blot following treatment to various concentrations of leptin for defined time intervals...
September 8, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28883539/role-of-adipose-tissue-in-melanoma-cancer-microenvironment-and-progression
#11
E Zoico, E Darra, V Rizzatti, M Tebon, G Franceschetti, G Mazzali, A P Rossi, F Fantin, M Zamboni
BACKGROUND: An epidemiological association between excess weight and increased risk of cancer has been described in melanoma, for which the physiopathological mechanisms are still unknown. The study of tumor microenvironment and of the role of adipocytes in cancer development, progression and metastasis has recently received great interest. However, the role of peritumoral adipocytes has been characterized only in a few types of cancer and in melanoma it still remains to be defined. METHODS: We investigated the interactions between adipocytes and melanoma cells using an in vitro co-culture system...
September 8, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28875329/the-stat3-inhibitor-pyrimethamine-displays-anti-cancer-and-immune-stimulatory-effects-in-murine-models-of-breast-cancer
#12
Mohammad W Khan, Abdulrahman Saadalla, Ahmed H Ewida, Khalid Al-Katranji, Ghadier Al-Saoudi, Zachary T Giaccone, Fotini Gounari, Ming Zhang, David A Frank, Khashayarsha Khazaie
The transcription factor signal activator and transducer or transcription (STAT3), which regulates genes controlling proliferation, survival, and invasion, is activated inappropriately in many human cancers, including breast cancer. Activation of STAT3 can lead to both malignant cellular behavior and suppression of immune cell function in the tumor microenvironment. Through a chemical-biology screen, pyrimethamine (PYR), an FDA approved anti-microbial drug, was identified as an inhibitor of STAT3 function at concentrations known to be achieved safely in humans...
September 5, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/28869696/comparison-and-functional-characterization-of-peripheral-blood-mononuclear-cells-isolated-from-filarial-lymphedema-and-endemic-normals-of-a-south-indian-population
#13
Abel Arul Nathan, Madhulika Dixit, Subash Babu, Anand Setty Balakrishnan
OBJECTIVE: The underlying problem in lymphatic filariasis is irreversible swelling of the limbs (lymphedema), which is a unique feature of lymphatic insufficiency. It is still unclear whether the natural ability of lymphatics to form functional lymphatic vasculature is achieved or attenuated in the lymphedemal pathology. Clinical studies have clearly shown that circulating lymphatic progenitors (CLPs), a subset of bone-marrow derived mononuclear cells (PBMCs), contribute to post-natal lymph vasculogenesis...
September 4, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28866055/a-novel-culture-method-reveals-unique-neural-stem-progenitors-in-mature-porcine-iris-tissues-that-differentiate-into-neuronal-and-rod-photoreceptor-like-cells
#14
Lars N Royall, Daniel Lea, Tamami Matsushita, Takaki Takeda, Shigeru Taketani, Masasuke Araki
Iris neural stem/progenitor cells from mature porcine eyes were investigated using a new protocol for tissue culture, which consists of dispase treatment and Matrigel embedding. We used a number of culture conditions and found an intense differentiation of neuronal cells from both the iris pigmented epithelial (IPE) cells and the stroma tissue cells. Rod photoreceptor-like cells were also observed but mostly in a later stage of culture. Neuronal differentiation does not require any additives such as fetal bovine serum or FGF2, although FGF2 and IGF2 appeared to promote neural differentiation in the IPE cultures...
August 30, 2017: Brain Research
https://www.readbyqxmd.com/read/28864076/the-role-of-fibroblast-growth-factor-binding-protein-1-in-skin-carcinogenesis-and-inflammation
#15
Marcel Oliver Schmidt, Khalid Ammar Garman, Yong Gu Lee, Chong Zuo, Patrick James Beck, Mingjun Tan, Juan Antonio Aguilar-Pimentel, Markus Ollert, Carsten Schmidt-Weber, Helmut Fuchs, Valerie Gailus-Durner, Martin Hrabe de Angelis, Elena Tassi, Anna Tate Riegel, Anton Wellstein
Fibroblast growth factor-binding protein 1 (FGFBP1, FGF-BP) is a secreted chaperone that mobilizes paracrine-acting FGFs, stored in the extracellular matrix, and presents them to their cognate receptors. FGFBP1 enhances FGF signaling including angiogenesis during cancer progression, and is upregulated in various cancers. Here we evaluated the contribution of endogenous FGFBP1 to development and homeostasis as well as to skin pathologies utilizing Fgfbp1-knockout (KO) mice. Relative to wild-type (WT) littermates KO mice showed no gross pathologies...
August 29, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28860123/circular-non-coding-rna-hipk3-mediates-retinal-vascular-dysfunction-in-diabetes-mellitus
#16
Kun Shan, Chang Liu, Bai-Hui Liu, Xue Chen, Rui Dong, Xin Liu, Yang-Yang Zhang, Ban Liu, Shu-Jie Zhang, Jia-Jian Wang, Sheng-Hai Zhang, Ji-Hong Wu, Chen Zhao, Biao Yan
Background -The vascular complications of diabetes mellitus are the major causes of morbidity and mortality among people with diabetes. Circular RNAs (circRNAs) are a class of endogenous non-coding RNAs that regulate gene expression in eukaryotes. In this study, we investigated the role of circRNA in retinal vascular dysfunction induced by diabetes. Methods -Quantitative polymerase chain reactions, Sanger sequencing, and Northern blots were conducted to detect circHIPK3 expression pattern upon diabetes mellitus-related stresses...
August 31, 2017: Circulation
https://www.readbyqxmd.com/read/28859292/exosomes-secreted-by-cardiomyocytes-subjected-to-ischaemia-promote-cardiac-angiogenesis
#17
Teresa M Ribeiro-Rodrigues, Tiago L Laundos, Rita Pereira-Carvalho, Daniela Batista-Almeida, Ricardo Pereira, Vanessa Coelho-Santos, Ana P Silva, Rosa Fernandes, Monica Zuzarte, Francisco J Enguita, Marina C Costa, Perpetua Pinto-do-Ó, Marta T Pinto, Pedro Gouveia, Lino Ferreira, Justin C Mason, Paulo Pereira, Brenda R Kwak, Diana S Nascimento, Henrique Girão
Aims: Myocardial infarction (MI) is the leading cause of morbidity and mortality worldwide and results from an obstruction in the blood supply to a region of the heart. In an attempt to replenish oxygen and nutrients to the deprived area, affected cells release signals to promote the development of new vessels and confer protection against MI. However, the mechanisms underlying the growth of new vessels in an ischaemic scenario remain poorly understood. Here, we show that cardiomyocytes subjected to ischaemia release exosomes that elicit an angiogenic response of endothelial cells (ECs)...
September 1, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28846166/cortisol-inhibits-csf2-and-csf3-via-dna-methylation-and-inhibits-invasion-in-first-trimester-trophoblast-cells
#18
Arianna Smith, Elizabeth Witte, Devin McGee, Jason Knott, Kavita Narang, Karen Racicot
PROBLEM: Heightened maternal stress affects trophoblast function and increases risk for adverse pregnancy outcomes. METHODS OF STUDY: Studies were performed using the first-trimester trophoblast cell line, Sw.71. Cytokines were quantified using qPCR and ELISA. Epigenetic regulation of cytokines was characterized by inhibiting histone deacetylation (1 μmol/L suberoylanilide hydroxamic acid [SAHA]) or methylation (5 μmol/L 5-azacytidine), or with chromatin immunoprecipitation (ChIP) with a pan-acetyl histone-3 antibody...
August 28, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28843696/ngf-protects-endothelial-cells-from-indomethacin-induced-injury-through-activation-of-mitochondria-and-upregulation-of-igf-1
#19
Amrita Ahluwalia, Michael K Jones, Neil Hoa, Andrzej S Tarnawski
BACKGROUND/AIMS: Endothelial cells (ECs) lining blood vessels are critical for delivery of oxygen and nutrients to all tissues and organs and play a crucial role in the regeneration of blood vessel following tissue injury. ECs are also major targets of injury by a variety of noxious factors [e.g., ethanol and nonsteroidal anti-inflammatory drugs (NSAIDs) such as aspirin, indomethacin, diclofenac], especially in gastric mucosa that has direct exposure to these agents. In this study, we investigated whether nerve growth factor (NGF) can protect gastric microvascular ECs (GECs) from injury by indomethacin (INDO) and the mechanisms involved...
August 24, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28841454/fgf-2-mediated-fgfr1-signaling-in-human-microvascular-endothelial-cells-is-activated-by-vaccarin-to-promote-angiogenesis
#20
Hai-Jian Sun, Wei-Wei Cai, Lei-Lei Gong, Xu Wang, Xue-Xue Zhu, Ming-Yu Wan, Pei-Yao Wang, Li-Ying Qiu
Angiogenesis is a complex physiological process involving the growth of new capillaries. The impaired angiogenesis plays important roles in chronic wounds and ischaemic heart disease. Fibroblast growth factor 2 (FGF-2) exerts pro-angiogenic actions via activation of fibroblast growth factor receptor 1 (FGFR-1). We have identified that vaccarin increased the angiogenic activity of endothelial cells. In this study, we investigated whether FGF-2-mediated FGFR1 signaling pathway participated in vaccarin-mediated neovascularization formation...
August 22, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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