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Notch signaling

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https://www.readbyqxmd.com/read/29791894/highly-tumorigenic-diffuse-large-b-cell-lymphoma-cells-are-produced-by-coculture-with-stromal-cells
#1
Zhiguang Lin, Bobin Chen, Ting Wu, Xiaoping Xu
BACKGROUND/AIMS: Diffuse large B cell lymphoma (DLBCL) is heterogeneous. We aimed to explore how tumor microenvironment promotes lymphoma cell aggressiveness and heterogeneity. METHODS: We created a coculture system using human DLBCL cells and mouse bone marrow stromal cells. Proliferative capacity, drug resistance, clonogenicity, and tumorigenicity were compared in lymphoma cells from the coculture system and lymphoma cells cultured alone. Expression of Notch signaling associated genes was evaluated using real-time reverse transcriptase PCR and Western blot...
May 23, 2018: Acta Haematologica
https://www.readbyqxmd.com/read/29785394/notch-signaling-pathway-is-inhibited-in-the-development-of-barrett-s-esophagus-an-in-vivo-and-in-vitro-study
#2
Yun-Cang Wang, Zhi-Qiang Wang, Yong Yuan, Tao Ren, Peng-Zhi Ni, Long-Qi Chen
Objective: To explore the role of Notch signaling in the development of Barrett's esophagus. Methods: Patients with esophagectomy and gastric interposition were recruited as a human model of gastroesophageal reflux disease. The expressions of Notch signaling genes in normal esophagus from surgical specimen and columnar metaplasia in the esophageal remnant after esophagectomy were evaluated by real time quantitative Polymerase Chain Reaction (RT-qPCR) and immunohistochemistry (IHC)...
2018: Canadian Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29784917/clonal-analysis-of-notch1-expressing-cells-reveals-the-existence-of-unipotent-stem-cells-that-retain-long-term-plasticity-in-the-embryonic-mammary-gland
#3
Anna M Lilja, Veronica Rodilla, Mathilde Huyghe, Edouard Hannezo, Camille Landragin, Olivier Renaud, Olivier Leroy, Steffen Rulands, Benjamin D Simons, Silvia Fre
Recent lineage tracing studies have revealed that mammary gland homeostasis relies on unipotent stem cells. However, whether and when lineage restriction occurs during embryonic mammary development, and which signals orchestrate cell fate specification, remain unknown. Using a combination of in vivo clonal analysis with whole mount immunofluorescence and mathematical modelling of clonal dynamics, we found that embryonic multipotent mammary cells become lineage-restricted surprisingly early in development, with evidence for unipotency as early as E12...
May 21, 2018: Nature Cell Biology
https://www.readbyqxmd.com/read/29784581/how-to-make-a-tongue-cellular-and-molecular-regulation-of-muscle-and-connective-tissue-formation-during-mammalian-tongue-development
#4
REVIEW
Martyn T Cobourne, Sachiko Iseki, Anahid A Birjandi, Hadeel Adel Al-Lami, Christel Thauvin-Robinet, Guilherme M Xavier, Karen J Liu
The vertebrate tongue is a complex muscular organ situated in the oral cavity and involved in multiple functions including mastication, taste sensation, articulation and the maintenance of oral health. Although the gross embryological contributions to tongue formation have been known for many years, it is only relatively recently that the molecular pathways regulating these processes have begun to be discovered. In particular, there is now evidence that the Hedgehog, TGF-Beta, Wnt and Notch signaling pathways all play an important role in mediating appropriate signaling interactions between the epithelial, cranial neural crest and mesodermal cell populations that are required to form the tongue...
May 18, 2018: Seminars in Cell & Developmental Biology
https://www.readbyqxmd.com/read/29783777/preferential-inhibition-of-wnt-%C3%AE-catenin-signaling-by-novel-benzimidazole-compounds-in-triple-negative-breast-cancer
#5
Abhishek Gangrade, Vibha Pathak, Corinne E Augelli-Szafran, Han-Xun Wei, Patsy Oliver, Mark Suto, Donald J Buchsbaum
Wnt/β-catenin signaling is upregulated in triple-negative breast cancer (TNBC) compared to other breast cancer subtypes and normal tissues. Current Wnt/β-catenin inhibitors, such as niclosamide, target the pathway nonspecifically and exhibit poor pharmacokinetics/pharmacodynamics in vivo. Niclosamide targets other pathways, including mTOR, STAT3 and Notch. Novel benzimidazoles have been developed to inhibit Wnt/β-catenin signaling with greater specificity. The compounds SRI33576 and SRI35889 were discovered to produce more cytotoxicity in TNBC cell lines than in noncancerous cells...
May 20, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29782512/regulation-of-midgut-cell-proliferation-impacts-aedes-aegypti-susceptibility-to-dengue-virus
#6
Mabel L Taracena, Vanessa Bottino-Rojas, Octavio A C Talyuli, Ana Beatriz Walter-Nuno, José Henrique M Oliveira, Yesseinia I Angleró-Rodriguez, Michael B Wells, George Dimopoulos, Pedro L Oliveira, Gabriela O Paiva-Silva
Aedes aegypti is the vector of some of the most important vector-borne diseases like dengue, chikungunya, zika and yellow fever, affecting millions of people worldwide. The cellular processes that follow a blood meal in the mosquito midgut are directly associated with pathogen transmission. We studied the homeostatic response of the midgut against oxidative stress, as well as bacterial and dengue virus (DENV) infections, focusing on the proliferative ability of the intestinal stem cells (ISC). Inhibition of the peritrophic matrix (PM) formation led to an increase in reactive oxygen species (ROS) production by the epithelial cells in response to contact with the resident microbiota, suggesting that maintenance of low levels of ROS in the intestinal lumen is key to keep ISCs division in balance...
May 21, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29781053/expression-of-nox-family-genes-and-their-clinical-significance-in-colorectal-cancer
#7
Sang Yeon Cho, Ju Seok Kim, Hyuk Soo Eun, Sun Hyung Kang, Eaum Seok Lee, Seok Hyun Kim, Jae Kyu Sung, Byung Seok Lee, Hyun Yong Jeong, Hee Seok Moon
BACKGROUND: The NADPH oxidase (NOX) family is overexpressed in many cancers and is associated with cancer cell proliferation and metastasis; however, little is known about the role of the NOX family in colorectal cancer (CRC). AIMS: To identify the expression of the NOX family in CRC and to investigate the relationship between the expression of NOXs with the prognosis of the patients. METHODS: In the TCGA data portal, mRNA expression data were obtained from 41 normal samples and 458 CRC samples to analyze mRNA expression and gene alteration...
May 21, 2018: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/29781036/correlation-between-hgf-c-met-and-notch1-signaling-pathways-in-human-gastric-cancer-cells
#8
Kuo-Hung Huang, I-Cheng Sung, Wen-Liang Fang, Chin-Wen Chi, Tien-Shun Yeh, Hsin-Chen Lee, Pen-Hui Yin, Anna Fen-Yau Li, Chew-Wun Wu, Yi-Ming Shyr, Muh-Hwa Yang
In recent decades, research concerning gastric carcinogenesis has rapidly progressed. It is evident that hepatocyte growth factor (HGF) is clinically related to gastric cancer progression and metastasis. In addition, previous studies have found that expression of Notch ligand Jagged1 is correlated with the poor prognosis of gastric cancer. However, the interaction between the HGF/c-Met and Notch1 signaling pathways remains unknown. In the present study, we found that gastric cancer patients with positive c-Met expression exhibited poorer overall survival than patients without c-Met expression (P=0...
May 16, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29781034/specific-inhibitor-of-notch%C3%A2-3-enhances-the-sensitivity-of-nsclc-cells-to-gemcitabine
#9
Bi-Dan Hu, Jia Guo, Yuan-Zi Ye, Ting Du, Chun-Song Cheng, Qian Jiang, Ruo-Nan Liu, Yan-Bei Zhang
Notch‑3 is a receptor of the Notch signaling pathway and plays an important role in regulating self‑renewal, differentiation and apoptosis in cancer cells. Overexpression of Notch‑3 has been proved to be associated with resistance to gemcitabine (GEM) and poor patient prognosis for various malignant tumors. In the present study, two non‑small cell lung cancer (NSCLC) cell lines, H1299 and A549, were induced with GEM for two months and then were treated with various concentrations of a Notch signaling blocker, N‑[N‑(3,5‑difluorophenacetyl)‑L‑alanyl]‑S‑phenylglycine t‑butyl ester (DAPT), with the goal of reducing expression of Notch intracellular domain 3 (NICD3)...
May 16, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29780306/spontaneous-hair-cell-regeneration-is-prevented-by-increased-notch-signaling-in-supporting-cells
#10
Melissa M McGovern, Luyi Zhou, Michelle R Randle, Brandon C Cox
During embryonic development, differentiation of cochlear progenitor cells into hair cells (HCs) or supporting cells (SCs) is partially controlled through Notch signaling. Many studies have shown that inhibition of Notch signaling allows SCs to convert into HCs in both normal and drug damaged neonatal mouse cochleae. This mechanism is also implicated during HC regeneration in non-mammalian vertebrates; however, the mechanism of spontaneous HC regeneration in the neonatal mouse cochlea is less understood. While inhibition of Notch signaling can force SCs to convert into HCs and increase the number of regenerated HCs, it is currently unknown whether this pathway is involved in spontaneous HC regeneration observed in vivo ...
2018: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/29779621/inhibition-of-notch-signaling-pathway-temporally-postpones-the-cartilage-degradation-progress-of-temporomandibular-joint-arthritis-in-mice
#11
Xueting Luo, Yangmei Jiang, Ruiye Bi, Nan Jiang, Songsong Zhu
PURPOSE: The aim of this study is to explore the role of Notch signaling pathway in the initiation and progression of temporomandibular joint osteoarthritis (TMJOA). METHODS: 48 mice were divided into DAPT-TMJOA, Control-TMJOA and Control-Sham groups. Animals received discectomy/Sham surgery in their right TMJ, following the DAPT/saline intra-articular injections every week. Mice were sacrificed at 1/4/8 weeks post-surgery. Safranin-O and H&E staining were performed on the TMJ sections for the modified Mankin's score...
May 2, 2018: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/29779281/-effects-of-tumor-necrosis-factor-%C3%AE-on-osteogenic-differentiation-and-notch-signaling-pathway-in-human-periodontal-ligament-stem-cells
#12
Yu Ma, Shu-Hui Li, Xin-Xin Ding, Pei-Ling Wu
OBJECTIVE: To evaluate the effects of tumor necrosis factor-α (TNF-α) on osteogenic differentiation and Notch signaling pathway of periodontal ligament stem cells (PDLSCs) and to investigate the regulatory role of Notch signaling pathway on the osteogenic differentiation of PDLSCs under the influence of TNF-α. METHODS: PDLSCs were obtained through enzyme digestion and tissue block method. The expression levels of stem cell surface markers CD105, CD90, CD146, CD45, and CD31 were detected by fluorescence activated cell sorter (FACS)...
April 1, 2018: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29777011/fox-proteins-are-modular-competency-factors-for-facial-cartilage-and-tooth-specification
#13
Pengfei Xu, Bartosz Balczerski, Amanda Ciozda, Kristin Louie, Veronika Oralova, Ann Huysseune, J Gage Crump
Facial form depends on the precise positioning of cartilage, bone, and tooth fields in the embryonic pharyngeal arches. How complex signaling information is integrated to specify these cell types remains a mystery. We find that modular expression of Forkhead-domain transcription factors (Fox) in the zebrafish face arises through integration of Hh, Fgf, Bmp, Edn1, and Jagged-Notch pathways. Whereas loss of C-class Fox proteins results in reduced upper facial cartilages, loss of F-class Fox proteins results in distal jaw truncations and absent midline cartilages and teeth...
May 18, 2018: Development
https://www.readbyqxmd.com/read/29776986/the-characteristics-of-vessel-lining-cells-in-normal-spleens-and-their-role-in-the-pathobiology-of-myelofibrosis
#14
Jiajing Qiu, Mohamed E Salama, Cing Siang Hu, Yan Li, Xiaoli Wang, Ronald Hoffman
The CD34- CD8α+ , sinusoid lining, littoral cells (LCs), and CD34+ CD8α- , splenic vascular endothelial cells (SVECs) represent 2 distinct cellular types that line the vessels within normal spleens and those of patients with myelofibrosis (MF). To further understand the respective roles of LCs and SVECs, each was purified from normal and MF spleens, cultured, and characterized. Gene expression profiling indicated that LCs were a specialized type of SVEC. LCs possessed a distinct gene expression profile associated with cytoskeleton regulation, cellular interactions, endocytosis, and iron transport...
May 22, 2018: Blood Advances
https://www.readbyqxmd.com/read/29776970/the-e3-ubiquitin-ligase-mib-1-is-necessary-to-form-the-nuclear-halo-in-caenorhabditis-elegans-sperm
#15
Leslie A Herrera, Daniel A Starr
Unlike the classical nuclear envelope with two membranes found in other eukaryotic cells, most nematode sperm nuclei are not encapsulated by membranes. Instead, they are surrounded by a nuclear halo of unknown composition. How the halo is formed and regulated is unknown. We used forward genetics to identify molecular lesions behind three classical fer (fertilization defective) mutations that disrupt the ultrastructure of the Caenorhabditis elegans sperm nuclear halo. We found fer-2 and fer-4 alleles to be nonsense mutations in mib-1...
May 18, 2018: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29775737/deltex-interacts-with-eiger-and-consequently-influences-the-cell-death-in-drosophila-melanogaster
#16
Debdeep Dutta, Ankita Singh, Maimuna Sali Paul, Vartika Sharma, Mousumi Mutsuddi, Ashim Mukherjee
TNF-JNK signaling is one of the highly conserved signaling pathways that regulate a broad spectrum of cellular processes including proliferation and apoptosis. Eiger, the sole homologue of TNF in Drosophila, initiates the TNF-JNK pathway to induce cell death. Previously, Deltex (Dx) has been identified as a Notch signaling component that regulates vesicular trafficking of Notch. In the present study, we have investigated the interaction between these two proteins in order to identify how Dx influences the activity of Eiger...
May 15, 2018: Cellular Signalling
https://www.readbyqxmd.com/read/29775245/subunits-of-the-dna-polymerase-alpha-primase-complex-promote-notch-mediated-proliferation-with-discrete-and-shared-functions-in-c-elegans-germline
#17
Dong Suk Yoon, Dong Seok Cha, Mohammad A Alfhili, Brett D Keiper, Myon-Hee Lee
Notch receptor signaling is a highly conserved cell communication system in most multicellular organisms and plays a critical role at several junctures in animal development. In C. elegans, GLP-1/Notch signaling is essential for both germline stem cell maintenance and germ cell proliferation during gonad development. Here, we show that subunits (POLA-1, DIV-1, PRI-1, and PRI-2) of the DNA polymerase alpha-primase complex are required for germ cell proliferation in response to GLP-1/Notch signaling in different tissues at different developmental stages...
May 18, 2018: FEBS Journal
https://www.readbyqxmd.com/read/29773667/notch-ligand-dll1-mediates-cross-talk-between-mammary-stem-cells-and-the-macrophageal-niche
#18
Rumela Chakrabarti, Toni Celià-Terrassa, Sushil Kumar, Xiang Hang, Yong Wei, Abrar Choudhury, Julie Hwang, Jia Peng, Briana Nixon, John J Grady, Christina DeCoste, Jie Gao, Johan H van Es, Ming O Li, Iannis Aifantis, Hans Clevers, Yibin Kang
The stem cell niche is a specialized environment that dictates stem cell function during development and homeostasis. Here, we show that Dll1, a Notch pathway ligand, is enriched in mammary gland stem cells (MaSCs) and mediates critical interactions with stromal macrophages in the surrounding niche. Conditional deletion of Dll1 reduced the number of MaSCs and impaired ductal morphogenesis in the mammary gland. Moreover, MaSC-expressed Dll1 activates Notch signaling in stromal macrophages, increasing their expression of Wnt family ligands such as Wnt3, Wnt10A, and Wnt16, thereby initiating a feed back loop that promotes the function of Dll1+ MaSCs...
May 17, 2018: Science
https://www.readbyqxmd.com/read/29773559/serrate-notch-signaling-regulates-the-size-of-the-progenitor-cell-pool-in-drosophila-imaginal-rings
#19
Sheng-An Yang, Wu-Min Deng
Drosophila imaginal rings are larval tissues composed of progenitor cells that are essential for the formation of adult foreguts, hindguts and salivary glands. Specified from subsets of ectoderm in the embryo, imaginal ring cells are kept quiescent until mid-second larval instar, and undergo rapid proliferation during the third instar to attain adequate numbers of cells that will replace apoptotic larval tissues for adult organ formation. Here we show that Notch signaling is activated in all three imaginal rings from middle embryonic stage to early pupal stage and that Notch signaling positively controls cell proliferation in all three imaginal rings during the third larval instar...
May 17, 2018: Genetics
https://www.readbyqxmd.com/read/29771334/%C3%AE-catenin-activation-in-hair-follicle-dermal-stem-cells-induces-ectopic-hair-outgrowth-and-skin-fibrosis
#20
Yixin Tao, Qingchun Yang, Lei Wang, Jie Zhang, Xuming Zhu, Qianqian Sun, Yunbin Han, Qian Luo, Yushu Wang, Xizhi Guo, Ji Wu, Baojie Li, Xiao Yang, Lin He, Gang Ma
Hair follicle dermal sheath (DS) harbors hair follicle dermal stem cells (hfDSCs), which can be recruited to replenish DS and dermal papilla (DP). Cultured DS cells can differentiate into various cell lineages in vitro. However, it is unclear how its plasticity is modulated in vivo. Wnt/β-catenin signaling plays an important role in maintaining stem cells of various lineages and is required for HF development and regeneration. Here we report that activation of β-catenin in DS generates ectopic HF outgrowth (EF) by reprogramming HF epidermal cells and DS cells themselves, and endows DS cells with hair inducing ability...
May 16, 2018: Journal of Molecular Cell Biology
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