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https://www.readbyqxmd.com/read/28432431/initial-cell-adhesion-of-three-cell-types-in-the-presence-and-absence-of-serum-proteins
#1
Martina Verdanova, Pavla Sauerova, Ute Hempel, Marie Hubalek Kalbacova
With the development of a wide range of new biomaterials for the sensing of different cell behaviour, it is important to consider whether the cells tested in vitro are in direct contact with the material or whether cell-biomaterial contact is mediated by an interfacial layer of proteins originating from the culture medium or from the cells themselves. Thus, this study describes the differences between the cell adhesion mediated by proteins originating from foetal bovine serum and without the presence of such proteins 2 h following cell seeding exemplarily with different cell types (an osteoblastic cell line, primary fibroblasts, and mesenchymal stem cells)...
April 21, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28431037/gestational-diabetes-alters-functions-in-offspring-s-umbilical-cord-cells-with-implications-for-cardiovascular-health
#2
Ajith Isaac Amrithraj, Anjaneyulu Kodali, Linh Nguyen, Adrian Kee Keong Teo, Cheng Wei Chang, Neerja Karnani, Kai Lyn Ng, Peter D Gluckman, Yap Seng Chong, Walter Stünkel
As non-communicable diseases such as type 2 diabetes mellitus have their roots in prenatal development and conditions such as maternal gestational diabetes (GDM), we aimed to test this hypothesis in primary cells derived from the offspring of GDM mothers compared to control subjects. We have assessed primary umbilical cord derived cells such as human umbilical vein endothelial cells (HUVECs) and Wharton's jelly derived mesenchymal stem cells (WJMSCs) from both, the offspring of GDM and non-GDM mothers. We have compared the primary isolates in cell based assays measuring proliferation, mitochondrial oxygen consumption, and the ability to support blood vessel growth...
April 19, 2017: Endocrinology
https://www.readbyqxmd.com/read/28430578/involvement-of-polo-like-kinase-1-plk1-in-quiescence-regulation-of-cancer-stem-like-cells-of-the-gastric-cancer-cell-lines
#3
Lin Zhu, Sheng Xing, Li Zhang, Jian-Min Yu, Cheng Lin, Wei-Jun Yang
Cancer stem cells (CSCs) have been hypothesized to initiate tumor growth and be resistant to chemoradiotherapy, and these processes appear to be closely related to CSC quiescence. Here, a CSC-like cell population with a high level of CD44 expression was obtained from the human gastric cancer cell lines MKN45 and MKN74. Using a PKH26-labeling retention assay, quiescent CSC-like cells with low levels of Ki67 and PCNA expression were found in spheres formed in serum-free medium, and exhibited resistance to drug and radiation treatments...
April 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28429508/immunophenotyping-and-activation-status-of-maternal-peripheral-blood-leukocytes-during-pregnancy-and-labour-both-term-and-preterm
#4
Jianhong Zhang, Oksana Shynlova, Sally Sabra, Annie Bang, Laurent Briollais, Stephen J Lye
The onset of labour in rodents and in humans is associated with physiological inflammation which is manifested by infiltration of activated maternal peripheral leukocytes (mPLs) into uterine tissues. Here, we used flow cytometry to immunophenotype mPLs throughout gestation and labour, both term and preterm. Peripheral blood was collected from non-pregnant women and pregnant women in the 1st, 2nd and 3rd trimesters. Samples were also collected from women in active labour at term (TL) or preterm (PTL) and compared with women term not-in-labour (TNIL) and preterm not-in-labour (PTNIL)...
April 21, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28428713/microrna-145-exerts-tumor-suppressive-and-chemo-resistance-lowering-effects-by-targeting-cd44-in-gastric-cancer
#5
Jian-Feng Zeng, Xiao-Qiu Ma, Lin-Pei Wang, Wei Wang
AIM: To determine the potential roles of CD4 and microRNA (miR)-145 in gastric cancer. METHODS: The levels of CD44 and miR-145 were determined in gastric cancer cells. Quantitative real-time polymerase chain reaction was used to measure to the level of CD44 mRNA. A luciferase reporter assay and western blotting were performed to examine the effect of miR-145 on CD44 expression. Tumor sphere and MTT assays were carried out to evaluate the self-renewal and chemo-resistance properties of gastric cancer cells...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28427212/high-myc-expression-and-transcription-activity-underlies-intra-tumoral-heterogeneity-in-triple-negative-breast-cancer
#6
Nidhi Gupta, Karen Jung, Chengsheng Wu, Abdulraheem Alshareef, Hind Alqahtani, Sambasivarao Damaraju, John R Mackey, Sunita Ghosh, Siham Sabri, Bassam S Abdulkarim, Gilbert Bigras, Raymond Lai
We have previously identified a novel intra-tumoral dichotomy in triple-negative breast cancer (TNBC) based on the differential responsiveness to a reporter containing the Sox2 regulatory region-2 (SRR2), with reporter responsive (RR) cells being more stem-like than reporter unresponsive (RU) cells. Using bioinformatics, we profiled the protein-DNA binding motifs of SRR2 and identified Myc as one of the potential transcription factors driving SRR2 activity. In support of its role, Myc was found to be highly expressed in RR cells as compared to RU cells...
March 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28427135/-effects-of-allogeneic-bone-marrow-mesenchymal-stem-cells-on-polarization-of-peritoneal-macrophages-in-rats-with-sepsis
#7
Y H Zheng, B Xiong, Y Y Deng, W Lai, S Y Zheng, H N Bian, Z A Liu, Z F Huang, C W Sun, H H Li, H M Luo, L H Ma, H X Chen
Objective: To explore the effects of allogeneic bone marrow mesenchymal stem cells (BMSCs) on polarization of peritoneal macrophages isolated from rats with sepsis induced by endotoxin/lipopolysaccharide (LPS). Methods: (1) BMSCs were isolated, cultured and purified from 5 SD rats with whole bone marrow adherent method. The third passage of cells were collected for morphologic observation, detection of expressions of stem cell surface markers CD29, CD44, CD45, and CD90 with flow cytometer, and identification of osteogenic and adipogenic differentiation...
April 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28426268/putative-biomarkers-of-response-to-treatment-in-breast-cancer-patients-a-pilot-assay
#8
María J Rico, Herman A Perroud, Cintia Herrera, Carlos M Alasino, Eduardo A Roggero, Stella M Pezzotto, Ana Lía Nocito, Viviana R Rozados, O Graciela Scharovsky
Identifying tumor biomarkers associated with clinical behavior in breast cancer patients may allow higher accuracy in the selection of treatment. Different types of cells were determined in the primary tumors of stage I, II, and III of breast cancer patients, who were assigned to one of the two groups: (1) disease-free or (2) relapsed/progressed, at 5 years after primary treatment. We studied 32 tumor samples. CD4(+) lymphocytes and CD44(+)CD24(-/low) cells (cancer stem cells) showed a significant association with clinical outcome at 5 years of primary treatment, while CD8(+), Foxp3(+), CD34(+), and myeloid-derived suppressor cells did not show any association...
April 20, 2017: Cancer Investigation
https://www.readbyqxmd.com/read/28423327/biphasic-dependence-of-glioma-survival-and-cell-migration-on-cd44-expression-level
#9
Rebecca L Klank, Stacy A Decker Grunke, Benjamin L Bangasser, Colleen L Forster, Matthew A Price, Thomas J Odde, Karen S SantaCruz, Steven S Rosenfeld, Peter Canoll, Eva A Turley, James B McCarthy, John R Ohlfest, David J Odde
No abstract text is available yet for this article.
April 18, 2017: Cell Reports
https://www.readbyqxmd.com/read/28423035/genetic-profiling-of-putative-breast-cancer-stem-cells-from-malignant-pleural-effusions
#10
Verena Tiran, Stefanie Stanzer, Ellen Heitzer, Michael Meilinger, Christopher Rossmann, Sigurd Lax, Oleksiy Tsybrovskyy, Nadia Dandachi, Marija Balic
A common symptom during late stage breast cancer disease is pleural effusion, which is related to poor prognosis. Malignant cells can be detected in pleural effusions indicating metastatic spread from the primary tumor site. Pleural effusions have been shown to be a useful source for studying metastasis and for isolating cells with putative cancer stem cell (CSC) properties. For the present study, pleural effusion aspirates from 17 metastatic breast cancer patients were processed to propagate CSCs in vitro...
2017: PloS One
https://www.readbyqxmd.com/read/28422250/a-novel-nanomissile-targeting-two-biomarkers-and-accurately-bombing-ctcs-with-doxorubicin
#11
Yu Gao, Xiaodong Xie, Fengqiao Li, Yusheng Lu, Tao Li, Shu Lian, Yingying Zhang, Huijuan Zhang, Hao Mei, Lee Jia
Rare circulating tumor cells (CTCs) cause >50% of primary colorectal cancer survivors to develop deadly metastasis at 3-5 years after surgery; the current chemotherapies can do nothing about these cells. Herein, we synthesized a novel doxorubicin (DOX)-entrapped mesoporous silica nanoparticle (MSN), covalently-conjugated with two aptamers, for simultaneously targeting EpCAM and CD44, the typical surface biomarkers of colorectal CTCs. The nanomissile can specifically capture the metastasis-prone CTCs spiked in healthy human blood in a competitive-binding manner...
April 19, 2017: Nanoscale
https://www.readbyqxmd.com/read/28421110/prognostic-evaluation-of-vimentin-expression-in-correlation-with-ki67-and-cd44-in-surgically-resected-pancreatic-ductal-adenocarcinoma
#12
Despoina Myoteri, Dionysios Dellaportas, Panagis M Lykoudis, Alexandros Apostolopoulos, Athanasios Marinis, Adamantia Zizi-Sermpetzoglou
Purpose. Radical surgical resection with adjuvant chemotherapy or chemo-radiotherapy is the most effective treatment for pancreatic ductal adenocarcinoma (PDAC). However, relatively few studies investigate the prognostic significance of biological markers in PDAC. This study aims to look into the expressions of vimentin, Ki67, and CD44 in PDAC surgical specimens and their potential prognostic implications in survival. Method. The study was designed as retrospective, and vimentin, Ki67, and CD44 expressions were evaluated by immunohistochemistry in 53 pancreatic ductal adenocarcinoma cases...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28420408/sialylation-regulates-myofibroblast-differentiation-of-human-skin-fibroblasts
#13
Norihiko Sasaki, Yoko Itakura, Masashi Toyoda
BACKGROUND: Fibroblasts are key players in maintaining skin homeostasis and in orchestrating physiological tissue repair and skin regeneration. Dysfunctions in fibroblasts that occur with aging and the senescent process lead to the delayed healing observed in elderly people. The molecular mechanisms leading to fibroblast dysfunction during aging and the senescent process have not yet been clarified. Previously, changes in patterns of glycosylation were observed in fibroblasts in aging and the senescent process, but the effect of these changes on the function of fibroblasts has not been well documented...
April 18, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28419571/characterization-of-mesenchymal-stem-cells-in-bovine-endometrium-during-follicular-phase-of-oestrous-cycle
#14
E Lara, N Rivera, D Rojas, L L Rodríguez-Alvarez, F O Castro
Stem cells have been postulated as responsible for cell regeneration in highly and continuously regenerative tissues such as the endometrium. Few studies in cattle have identified and specified the presence of stem cells in the endometrium during the oestrous cycle. The aim of this study was to investigate the presence of mesenchymal stem cells (MSCs) in the bovine endometrium during the follicular phase (FP) of the oestrous cycle. Uterine tissue was collected in the time-frame comprising day 18 of the cycle and ovulation (day 0)...
April 16, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28418857/multi-factorial-modulation-of-colorectal-carcinoma-cells-motility-partial-coordination-by-the-tetraspanin-co-029-tspan8
#15
Yingying Zhu, Naouel Ailane, Monica Sala-Valdés, Farhad Haghighi-Rad, Martine Billard, Viet Nguyen, Raphael Saffroy, Antoinette Lemoine, Eric Rubinstein, Claude Boucheix, Céline Greco
Colorectal carcinoma cells Isreco1 display an ability to migrate controlled by a complex set of signals issued from the membrane. By comparing cells infected by mycoplasmas and mycoplasmas free cells, we have established that basal 2D migration is dependent on a double signal mediated by the collagen receptors integrins alpha1/2 and the Toll-Like receptor TLR2. The signal issued from mycoplasmas can be replaced by a TLR2 ligand and the functional effect is neutralized by silencing of MyD88. Following previous observation that downregulation of E-cadherin/p120 catenin increases cell motility, we now report that EGFR or CD44 inhibition have a similar effect on cell motility that is restricted to tetraspanin Co-029/tspan8 transduced IsrecoI cells (Is1-Co029)...
April 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28418843/cd24-expression-and-differential-resistance-to-chemotherapy-in-triple-negative-breast-cancer
#16
Xinyu Deng, Sophia Apple, Hong Zhao, Jeongyoon Song, Minna Lee, William Luo, Xiancheng Wu, Debra Chung, Richard J Pietras, Helena R Chang
Breast cancer (BC) is a leading cause of cancer-related death in women. Adjuvant systemic chemotherapies are effective in reducing risks of recurrence and have contributed to reduced BC mortality. Although targeted adjuvant treatments determined by biomarkers for endocrine and HER2-directed therapies are largely successful, predicting clinical benefit from chemotherapy is more challenging. Drug resistance is a major reason for treatment failures. Efforts are ongoing to find biomarkers to select patients most likely to benefit from chemotherapy...
March 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28415888/bioengineered-gold-nanoparticles-targeted-to-mesenchymal-cells-from-patients-with-bronchiolitis-obliterans-syndrome-does-not-rise-the-inflammatory-response-and-can-be-safely-inhaled-by-rodents
#17
Emanuela Cova, Simona Inghilleri, Laura Pandolfi, Monica Morosini, Sara Magni, Miriam Colombo, Davide Piloni, Chiara Finetti, Gabriele Ceccarelli, Laura Benedetti, Maria Gabriella Cusella, Manuela Agozzino, Fabio Corsi, Raffaele Allevi, Simona Mrakic-Sposta, Sarah Moretti, Simona De Gregori, Davide Prosperi, Federica Meloni
The use of gold nanoparticles as drug delivery system represents a promising issue for diseases without effective pharmacological treatment due to insufficient local drug accumulation and excessive systemic toxicity. Bronchiolitis obliterans syndrome (BOS) represents about 70% of cases of chronic lung allograft dysfunction, the main challenge to long term lung transplantation. It is believed that due to repeated insults to epithelial bronchiolar cells local inflammatory response creates a milieu that favours epithelial mesenchymal transition and activation of local mesenchymal cells leading to airway fibro-obliteration...
April 18, 2017: Nanotoxicology
https://www.readbyqxmd.com/read/28415792/a-cd44-specific-peptide-rp-1-exhibits-capacities-of-assisting-diagnosis-and-predicting-prognosis-of-gastric-cancer
#18
Weiming Li, Huan Jia, Jichang Wang, Hao Guan, Yan Li, Dan Zhang, Yanan Tang, Thomas D Wang, Shaoying Lu
Early diagnosis and evaluation of prognosis are both crucial for preventing poor prognosis of patients with gastric cancer (GC), a leading cause of cancer-related deaths worldwide. Cluster of differentiation 44 (CD44), an indicator of cancer stem cells, can be specifically targeted by molecular probes and detected in tissues of GC in a large quantity. In current study we found that RP-1, a specific peptide binding to CD44 protein, exhibited the potentials of specific binding to CD44 high-expressing cancer cells both in vitro and in vivo, and the capacity of predicting prognosis of human GC in a microarray assay...
March 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28414312/high-resolution-myogenic-lineage-mapping-by-single-cell-mass-cytometry
#19
Ermelinda Porpiglia, Nikolay Samusik, Andrew Tri Van Ho, Benjamin D Cosgrove, Thach Mai, Kara L Davis, Astraea Jager, Garry P Nolan, Sean C Bendall, Wendy J Fantl, Helen M Blau
Muscle regeneration is a dynamic process during which cell state and identity change over time. A major roadblock has been a lack of tools to resolve a myogenic progression in vivo. Here we capitalize on a transformative technology, single-cell mass cytometry (CyTOF), to identify in vivo skeletal muscle stem cell and previously unrecognized progenitor populations that precede differentiation. We discovered two cell surface markers, CD9 and CD104, whose combined expression enabled in vivo identification and prospective isolation of stem and progenitor cells...
April 17, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28414310/autophagy-supports-generation-of-cells-with-high-cd44-expression-via-modulation-of-oxidative-stress-and-parkin-mediated-mitochondrial-clearance
#20
K A Whelan, P M Chandramouleeswaran, K Tanaka, M Natsuizaka, M Guha, S Srinivasan, D S Darling, Y Kita, S Natsugoe, J D Winkler, A J Klein-Szanto, R K Amaravadi, N G Avadhani, A K Rustgi, H Nakagawa
High CD44 expression is associated with enhanced malignant potential in esophageal squamous cell carcinoma (ESCC), among the deadliest of all human carcinomas. Although alterations in autophagy and CD44 expression are associated with poor patient outcomes in various cancer types, the relationship between autophagy and cells with high CD44 expression remains incompletely understood. In transformed oesophageal keratinocytes, CD44(Low)-CD24(High) (CD44L) cells give rise to CD44(High)-CD24(-/Low) (CD44H) cells via epithelial-mesenchymal transition (EMT) in response to transforming growth factor (TGF)-β...
April 17, 2017: Oncogene
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