Gentaur Pub

#33662786   2021/03/01 To Up

Nicotine-derived NNK induces the stemness enrichment of CRC cells through regulating the balance of DUSP4-ERK1/2 feedback loop.

Cigarette smoking has been considered as an independent risk factor for colorectal cancer (CRC) initiation and progression. In this study, we found that cigarette smoking was significantly associated with poor CRC differentiation (P = 0.040). Since studies have indicated that poorly differentiated tumors are more aggressive and metastasize earlier, leading to poorer prognosis; and cancer stem cells (CSCs) are largely responsible for tumor differentiation state, here we observed that the exposure of nicotine-derived 4-(methylnitrosamino)- 1-(3-pyridyl)- 1-butanone (NNK) promoted cell sphere formation and the expression of the stem cell markers, CD44, OCT4, C-MYC and NANOG in HCT8 and DLD-1 cells. Further colony formation assay, CCK-8 assay and tumor-bearing experiment showed that NNK exposure significantly increased the proliferative and growth ability of CRC cells. In mechanism, we found that NNK-activated ERK1/2 played an important role in enrichment of CRC stem cells and the up-regulation of DUSP4, a major negative regulator of ERK1/2. Moreover, DUSP4 up-regulation was essential for maintaining NNK-activated ERK1/2 in an appropriate level, which was an required event for NNK-induced stemness enrichment of CRC cells. Taken together, our findings provided a possible mechanistic insight into cigarette smoking-induced CRC progression.
Yansu Chen, Qinzhi Wang, Lin Cao, Yu Tang, Meixue Yao, Haoran Bi, Yefei Huang, Guixiang Sun, Jun Song

1708 related Products with: Nicotine-derived NNK induces the stemness enrichment of CRC cells through regulating the balance of DUSP4-ERK1/2 feedback loop.

100 U12000 IU2 5 Gmin 2 cartons1 Plate of 96 x 20ul/Unit1.00 flask

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#33662736   2021/02/24 To Up

Generation of integration-free induced pluripotent stem cell lines from four pediatric ADHD patients.

Human induced pluripotent stem cell (iPSC) lines have been derived from four male patients with childhood attention-deficit hyperactivity disorder (ADHD). Children and adolescents between the ages 6 and 18 suffering from ADHD were recruited for this work. Isolated keratinocytes or peripheral blood mononuclear cells from the participants were reprogrammed into iPSCs using non-integrating Sendai virus to deliver the reprogramming factors Oct3/4, Sox2, Klf4 and c-Myc.
Leoni Grossmann, Cristine Marie Yde Ohki, Christian Döring, Per Hoffmann, Stefan Herms, Anna Maria Werling, Susanne Walitza, Edna Grünblatt

1726 related Products with: Generation of integration-free induced pluripotent stem cell lines from four pediatric ADHD patients.

5 Modulators100 Plates1 x 10^6 cells/vial2ug25 ug1400 ug5 Modulators10 Plates24 wells24 reactions 5 ug

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#33660217   2021/03/04 To Up

Targeting "undruggable" c-Myc protein by synthetic lethality.

Synthetic lethal screening, which exploits the combination of mutations that result in cell death, is a promising method for identifying novel drug targets. This method provides a new avenue for targeting "undruggable" proteins, such as c-Myc. Here, we revisit current methods used to target c-Myc and discuss the important functional nodes related to c-Myc in non-oncogene addicted network, whose inhibition may cause a catastrophe for tumor cell destiny but not for normal cells. We further discuss strategies to identify these functional nodes in the context of synthetic lethality. We review the progress and shortcomings of this research field and look forward to opportunities offered by synthetic lethal screening to treat tumors potently.
Chen Wang, Hui Fang, Jiawei Zhang, Ying Gu

1502 related Products with: Targeting "undruggable" c-Myc protein by synthetic lethality.

10 μg1 Set100100ug1 mg1 Set1000100 ug1 Set5001mg500

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#33659885   2021/02/01 To Up

Inhibition of fatty acid synthesis induces differentiation and reduces tumor burden in childhood neuroblastoma.

Many metabolic pathways, including lipid metabolism, are rewired in tumors to support energy and biomass production and to allow adaptation to stressful environments. Neuroblastoma is the second deadliest solid tumor in children. Genetic aberrations, as the amplification of the -oncogene, correlate strongly with disease progression. Yet, there are only a few molecular targets successfully exploited in the clinic. Here we show that inhibition of fatty acid synthesis led to increased neural differentiation and reduced tumor burden in neuroblastoma xenograft experiments independently of -status. This was accompanied by reduced levels of the MYCN or c-MYC oncoproteins and activation of ERK signaling. Importantly, the expression levels of genes involved in fatty acid synthesis showed prognostic value for neuroblastoma patients. Our findings demonstrate that inhibition of fatty acid synthesis is a promising pharmacological intervention strategy for the treatment of neuroblastoma independently of -status.
María Victoria Ruiz-Pérez, Lourdes Sainero-Alcolado, Ganna Oliynyk, Isabell Matuschek, Nicola Balboni, S J Kumari A Ubhayasekera, Marteinn Thor Snaebjornsson, Kamil Makowski, Kristina Aaltonen, Daniel Bexell, Dolors Serra, Roland Nilsson, Jonas Bergquist, Almut Schulze, Marie Arsenian-Henriksson

2813 related Products with: Inhibition of fatty acid synthesis induces differentiation and reduces tumor burden in childhood neuroblastoma.

96tests100ug Lyophilized

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#33659837   // To Up

Migration of primordial germline cells is negatively regulated by surrounding somatic cells during early embryogenesis in Drosophila melanogaster.

Cell migration is an important morphogenetic process necessary at different stages of individual development and body functioning. The initiation and maintenance of the cell movement state requires the activation of many factors involved in the regulation of transcription, signal transduction, adhesive interactions, modulation of membranes and the cytoskeleton. However, cell movement depends on the status of both migrating and surrounding cells, interacting with each other during movement. The surrounding cells or cell matrix not only form a substrate for movement, but can also participate in the spatio-temporal regulation of the migration. At present, there is no exact understanding of the genetic mechanisms of this regulation. To determine the role of the cell environment in the regulation of individual cell migration, we studied the migration of primordial germline cells (PGC) during early embryogenesis in Drosophila melanogaster. Normally, PGC are formed at the 3rd stage of embryogenesis at the posterior pole of the embryo. During gastrulation (stages 6-7), PGC as a consolidated cell group passively transfers into the midgut primordium. Further, PGC are individualized, acquire an amoeboid form, and actively move through the midgut epithelium and migrate to the 5-6 abdominal segment of the embryo, where they form paired embryonic gonads. We screened for genes expressed in the epithelium surrounding PGC during early embryogenesis and affecting their migration. We identified the myc, Hph, stat92E, Tre-1, and hop genes, whose RNA interference leads to premature active PGC migration at stages 4-7 of embryogenesis. These genes can be divided into two groups: 1) modulators of JAK/STAT pathway activity inducing PGC migration (stat92E, Tre-1, hop), and 2) myc and Hph involved in epithelial morphogenesis and polarization, i. e. modifying the permeability of the epithelial barrier. Since a depletion of each of these gene products resulted in premature PGC migration, we can conclude that, normally, the somatic environment negatively regulates PGC migration during early Drosophila embryogenesis.
N V Dorogova, A S Khruscheva, Iu A Galimova, D Yu Oshchepkov, D E Maslov, E D Shvedkina, K A Akhmetova, S A Fedorova

1052 related Products with: Migration of primordial germline cells is negatively regulated by surrounding somatic cells during early embryogenesis in Drosophila melanogaster.

0.1ml (1mg/ml)100 µg1.00 flask1x10e7 cells10 ug96 assays100 µg1.00 flask2 ml1x10e7 cells10 rxns

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#33659347   2020/07/05 To Up

Tyramide Signal-Amplified Immunofluorescence of MYCN and MYC in Human Tissue Specimens and Cell Line Cultures.

MYC family members, MYC, MYCN, and MYCL, are oncogenic transcription factors that regulate the expression of genes involved in normal development, cell growth, proliferation, metabolism, and survival. While MYC is amplified and/or overexpressed across a variety of tissue types, MYCN is often overexpressed in tumors of the nervous system (neuroblastoma and medulloblastoma) or with neuroendocrine features (neuroendocrine prostate cancer). Given recent reports that MYCN expression is also deregulated in a variety of non-neuronal tissue types, we investigated whether MYCN was also deregulated in triple-negative breast cancer (TNBC). In contrast to previous individual immuno-fluorescence (IF) stains against higher expressing MYC family isoform protein, we developed an IF stain to simultaneously detect both MYCN- and MYC-expressing cells within the same tumor cell population. Our methodology allows for the detection of low level MYCN and MYC expression and can be multiplexed with additional protein probes. Herein, using tyramide signal amplification (TSA), we present two protocols for the IF detection of MYCN and MYC on formalin-fixed paraffin embedded (FFPE) tumor sections and in cell lines fixed after growth as adherent cultures on chambered microscope slides.
Johanna M Schafer, Jennifer A Pietenpol

2697 related Products with: Tyramide Signal-Amplified Immunofluorescence of MYCN and MYC in Human Tissue Specimens and Cell Line Cultures.

1000 100ug Lyophilized96 wells11.00 flask

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#33658859   2021/02/25 To Up

MRPL13 Promotes Tumor Cell Proliferation, Migration and EMT Process in Breast Cancer Through the PI3K-AKT-mTOR Pathway.

Breast cancer (BC), with varying histopathology, biology and response to systemic treatment, is the second leading cause of cancer-related mortality. Previous studies have inferred that the expression of mitochondrial ribosomal proteins (MRPs) is possibly related to the occurrence/progression of BC. MRPL13 might be one of the potential MRP candidates that are involved in BC tumorigenesis, but its role in BC has rarely been reported. The purpose of the current study was to evaluate the prognostic significance of MRPL13, as well as to explore its potential biological functions in BC.
Miaomiao Cai, Hanning Li, Runfa Chen, Xiang Zhou

2423 related Products with: MRPL13 Promotes Tumor Cell Proliferation, Migration and EMT Process in Breast Cancer Through the PI3K-AKT-mTOR Pathway.

2 Pieces/Box

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#33658804   2021/02/25 To Up

TRIM11 Promotes Proliferation, Migration, Invasion and EMT of Gastric Cancer by Activating β-Catenin Signaling.

Gastric cancer (GC) is the sixth most common malignant tumor and the third leading cause of cancer-related death in the world. Studies have shown that TRIM protein can regulate transcription factor activity and is associated with many cancers. However, the role of TRIM11 in gastric cancer remains unclear.
Qingzhi Lan, Xiaoping Tan, Pengzhan He, Wei Li, Shan Tian, Weiguo Dong

2243 related Products with: TRIM11 Promotes Proliferation, Migration, Invasion and EMT of Gastric Cancer by Activating β-Catenin Signaling.

Each100.00 ul100ug1000 TESTS/0.65ml50ul

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#33658796   2021/02/25 To Up

Anti-Proliferative, Pro-Apoptotic, Anti-Migrative and Tumor-Inhibitory Effects and Pleiotropic Mechanism of Theaflavin on B16F10 Melanoma Cells.

Theaflavin (TF) is a primary pigment of tea, exhibiting anti-proliferative, pro-apoptotic and anti-metastatic activities on cancer cell lines. However, it is unknown whether TF is effective in treating melanoma cells.
Lei Zhang, Shijie Meng, Bo Yan, Jie Chen, Li Zhou, Letian Shan, Ying Wang

1006 related Products with: Anti-Proliferative, Pro-Apoptotic, Anti-Migrative and Tumor-Inhibitory Effects and Pleiotropic Mechanism of Theaflavin on B16F10 Melanoma Cells.

200 0.1ml (1mg/ml)0.1 mg1000 100ul1 ml100ul100ul100.00 ul1000 TESTS/0.65ml100ul25

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#33655000   2019/04/05 To Up

Multiple Modification of Chromosomal Loci Using Selection Marker in the Unicellular Red Alga .

The unicellular red alga has been used as a eukaryotic photosynthetic model for various basic and applied studies. Although the nuclear genome of can be modified by homologous recombination with exogenously introduced DNA, it has been difficult to modify multiple chromosome loci within the same strain because of the limited number of available positive selection markers. Recently, we reported a modified gene cassette (), which can be used repeatedly for nuclear genome transformation using the pMKT plasmid vectors for epitope tagging (3x FLAG- or 3x Myc-) of nuclear-encoded proteins. In addition, these plasmid vectors can also be used to knock out multiple genes one by one. This report describes the construction of DNA fragments for transformation and the detailed transformation procedure.
Tokiaki Takemura, Sousuke Imamura, Yuki Kobayashi, Kan Tanaka

2976 related Products with: Multiple Modification of Chromosomal Loci Using Selection Marker in the Unicellular Red Alga .

16 Arrays/Slide

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