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We narrowed to 81 results for: eukaryotic cell

Showing: 21 - 40 of 81 results
  1. CRISPR 101: Homology Directed Repair

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    ...directed repair fix DNA double-strand breaks?  In eukaryotic cells, repair of DSBs occurs primarily by two pathways...used, however, these are generally more toxic to cells than their plasmid counterparts. Another consideration...how to fix a broken relationship. Pardo B, et al. Cell Mol Life Sci (2009). PubMed. Regulation of DNA...break repair pathway choice. Shrivastav M, et al Cell Research (2008). PubMed. Mechanisms of DNA double-strand...Improve HDR Efficiency for CRISPR Editing in Human Cells Resources on Addgene.org Browse All CRISPR Plasmids...
  2. Quick Guide to Near-Infrared Fluorescent Proteins

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    ...mammalian cells. dDetermined as effective NIR fluorescence in transiently transfected live HeLa cells with ...Near-Infrared Fluorescent Proteins in Mammalian Cells. Cell Chem Biol 24, 758-766 e753 (2017). Baloban, M...probe developers and users, BV is present in eukaryotic cells as an intermediate of heme metabolism (Shemetov...to GFP-like probes by supplying a single gene to cells. Still in bacteria, which do not produce BV, an ... to consider effective brightness of NIR FPs in cells, in addition to their molecular brightness (a product...the concentration of BV-containing molecules in a cell and depends on the efficiency of BV incorporation...Photo-stabilityc, t1/2, s pKa Brightness in HeLa cells vs. iRFP713, % d Ref BphP-based FPs miRFP670...
  3. Mycoplasma Contamination: Where Does It Come From and How to Prevent It

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    ...mycoplasma contamination in your cell culture or you are about to begin a new cell culture project. If mycoplasmas...present in most of the cell culture facilities, tissue culture labs and every cell culturist has to deal...cost-effective (Sung, 2006). The sensor cell-based method uses specialized cells that can detect the presence of... should be made available for cell culturing and maintenance of the cell lines. Providing such an environment...Photo by Kate Harten DeMaio. Cell lines and reagents Examine your cell line stock for mycoplasma contamination...cryopreserved vials of the cell lines even though the viability of cryopreserved cells decreases with every ...cause mycoplasma infection from one cell line to another. Multiple cell lines should not be stored in a single...
  4. Isolating Genomic Regions of Interest with the CRISPR System

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    ...used. The Fujii lab demonstrated this in mammalian cells by expressing dCas9 with an N-terminal 3xFLAG tag...studies (Fujita et al., 2018). In addition to the "in cell" form of this method, in which an engineered DNA-binding...molecule such as the CRISPR complex is expressed in cells to be analyzed, the Fujii lab also developed another...recombinant CRISPR ribonucleoproteins." Genes to Cells 21.4 (2016): 370-377. PubMed PMID: 26848818. Fujita...‐dC as9 protein for enCh IP analysis." Genes to cells 23.4 (2018): 318-325. PubMed PMID: 29480524. Gilbert...RNA-guided regulation of transcription in eukaryotes." Cell 154.2 (2013): 442-451. PubMed PMID: 23849981...of chromatin interactions by biotinylated dCas9." Cell 170.5 (2017): 1028-1043. PubMed PMID: 28841410. ...
  5. Production of Virus in Insect Versus Mammalian Cells

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    ...that already do mammalian cell culture. HEK-293T cells are the most common cells used in viral production...versus insect cells for viral production Consideration Mammalian cells Insect cells Viruses AAV ...type of cells that will be used to make the virus. Viruses can be produced in many different cell types,...produced in bacteria cells. However, some viruses can be produced in multiple different cell types, including...you make an informed decision. Mammalian cells Mammalian cells are a great option for viral production,...production in mammalian cells is relatively quick. After transfection, HEK-293T cells start producing virus...using qPCR or digital droplet PCR. Insect cells Insect cells are a less common option for the generation...
  6. 28 Hot Plasmid Technologies from 2015

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    ...in live cells is that one can now follow movement of two or more targeted loci during the cell cycle or...mammalian cells, yeast, and Drosophila. Synchronization of secretory protein traffic in mammalian cells The... different organelles, a cell cycle indicator for mouse embryonic stem cells and a series of inducible...populations within the same cell. Mitochondrial fusion is typically assayed in living cells by using mitochondrially-targeted... alternative splicing in mammalian cells. Younis, et al. Mol Cell Biol. 2010 Apr;30(7):1718-28. New...yeast cell viability, had less of an effect on GFP diffusion, properly localized in mammalian cells without...fluorescent fusion proteins can visualize: Cell Structure Plasmids: Cell Structure Plasmids: ER mCherry-Sec61...
  7. Genetic Code Expansion

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    ...applications of genetic code expansion in cell biology . Nat Rev Mol Cell Biol, 13 (3), 168–182. https://doi....expanding the genetic code in bacteria and mammalian cells. Plasmid...which means they work independently of the host cell's natural genetic machinery. The orthogonal aaRS ...coli , while E. coli pairs are orthogonal in eukaryotic cells. Pairs from methanogens like Methanosarcina... mazei are orthogonal both in bacteria and eukaryotic cells. Many of these sets have been mutated and ... Once these plasmids have been introduced in the cell, the ncAA provided in the media can be incorporated...match the growth medium, ncAA concentration, and the cell lines used previously. Remember that the orthogonal...
  8. Plasmids 101: Terminators and PolyA signals

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    ...given host cell type are generally broken down into two broad categories, prokaryotic or eukaryotic, based...across cell types, but polyadenylation generally serves to promote transcript longevity in eukaryotes and...quality control mechanism to rid the cell of mis-folded RNAs. Eukaryotic termination and polyadenylation Unlike...processes for eukaryotic termination are understood and it has been noted that each eukaryotic RNA polymerase... contain. Plasmid DNA in both prokaryotic and eukaryotic systems must be transcribed into RNA, which occurs...polyadenylation Although mostly thought of as a eukaryotic-specific process, prokaryotes also add poly(A...(A) tails to certain RNAs. Unlike the eukaryotic mechanism which requires a consensus sequence for the...
  9. CRISPR History and Development for Genome Engineering

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    ...genomic loci in living human cells by an optimized CRISPR/Cas system. Cell . 155(7):1479-91. PMID: 24360272... for Mapping Multiprotein Complexes in Human Cells. Cell Rep . 13(3):621-33. PMID: 26456817 Fu Y, Sander...described CRISPR-based genome editing in mammalian cell culture. Five years later, PubMed lists more than...multiple loci can be easily expressed in the same cell or organism. The ability to precisely target CRISPR...genome edits or double-strand breaks. In mammalian cells, Cas13-ADAR2 does not require a specific flanking...proteins can be used to image genomic loci in live cells. RNA targeting : Cas13 enzymes target RNA rather...non-specific cleavage does not occur in mammalian cells. Purify : Epitope-tagged dCas9 can also be used ...
  10. CRISPR Guide

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    ...with Haploid Embryonic Stem Cells Carrying a Guide RNA Library. Cell Stem Cell . 17 (2), 221–232. https:...in the same cell. This is called multiplexing , and increases the likelihood that any cell containing ...can increase efficiency. Synchronizing cells or modulating the cell cycle can help as HDR takes place during...expressing stable cell line. After applying your screening conditions to your transduced cell population, you...tracking of RNA in live cells, including orthogonal RNA/DNA labeling in the same cell. Figure 11: Overview...promiscuity is unique to bacterial cells and does not occur in mammalian cells. SHERLOCK , developed by the ...genomic loci in living human cells by an optimized CRISPR/CAS system. Cell . 155 (7), 1479–1491. https:...
  11. Plasmids 101: Protein tags

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    ...being spent to make something the cell doesn’t need to make. Eukaryotes and some bacteria deploy proteosomes...a recombinant protein? It is not generally in a cell’s best interest to overexpress a protein. Energy ...proteosomes to degrade what the cell might consider junk protein. Though there are a number of chemical and...Prokaryotes can also have a hard time folding eukaryotic proteins. You can get your bacteria to produce...Purification Can improve solulibility and folding of eukaryotic proteins in prokaryotes; single step purification... Not great for purification; too cleavable in eukaryotes TAP GRRIPGLINP WKRRWKKNFI AVSAANRFKK ISSSGALDYD...recognition site. In fact, SUMO cannot be used in eukaryotes because there is already too much SUMO protease...
  12. Chromoproteins: Colorful Proteins For Molecular Biology Experiments

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    ... them into your cells, you can simply look for blue colonies to determine which cells have taken up the... mScarlet as the donor in HeLa cells.   Find ShadowR for mammalian cell expression here   Now that you...cloning experiment worked just by looking at the cells on the plate. For example, if your plasmid contains...applications. Find a chromoprotein for your experiment! Eukaryotic chromoproteins for bacterial synthetic biology...common chromoproteins used in the lab come from eukaryotes, they can be difficult to directly use in bacteria... greatly between chromoproteins. In some cases, cells containing high-copy plasmid-borne chromoproteins...Here, the chromoprotein is expressed and gives the cell a magenta (amilCP) or purple (tsPurple) color. Though...
  13. Plasmids 101: Using Transposons in the Lab

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    ... yeast, plant, insect, and mammalian cells, including human cells. piggyBac is biased to integrate at ... in the genomes of many other prokaryotes and eukaryotes, and make up ~45% of the human genome (Munoz-...elements that are found in both prokaryotic and eukaryotic genomes.  Components of a transposon system ...is active in vertebrates and integrates in human cells at rates similar to retroviral vectors. The hyperactive...piggyBac has an integration efficiency in human cells similar to retroviral vectors. The hyperactive PB...transposase (hyPB) is ~10-fold more active in mammalian cells compared to the codon-optimized wild-type piggyBac...G/C)TNA. Tol2 can deliver 10-11 kB to mammalian cells without decreased efficiency, with a maximum cargo...
  14. Plasmids 101: Protein Expression

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    ...produced using complex mixtures derived from cells or using live cells. There are several types of expression...consists of transfecting cells with your DNA template of choice and allowing these cells to transcribe, translate...demanding cell culture conditions compared to other systems. Insect expression systems Insect cells can also...coli or yeast cells. The only problem with baculovirus systems is that the infected host cell is eventually...eventually lysed. Cell lysis halts protein production, but there are non-lytic insect cell expression systems...Sf21, Hi-5 cells)  that allow for continuous expression of genes integrated into the insect cell genome. ...that is then transformed into a bacterial cell. Transformed cells propagate, are induced to produce your ...
  15. Avoiding the Dark Side of Fluorescent Protein Fusions with mOX FPs

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    ...numerous cell biology assays. However, there has been a pervasive view that most FPs in a cell will fold...fluorescent fusion proteins in cell biology."Current Protocols in Cell Biology (2005): 21-4. Pubmed PMID...Lee. "Fluorescent proteins: a cell biologist's user guide." Trends in cell biology 19.11 (2009): 649-655...-fusions on quantitative imaging experiments and cell physiology in general. Pitfalls of Fluorescent Protein...quantitative imaging experiments or even negatively impact cells (see Figure 1). When behaving properly, FPs enable...dynamics of fluorescent protein fusions in live cells in real time. Previously, we have described a number... i.e. positioning of the FP sequence relative to cell compartment targeting sequences, which often have...
  16. mTOR Pathway

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    ... (mTOR) is a key metabolic regulator controlling cell growth and proliferation. mTOR, a serine/threonine...signals to determine the nutritional state of the cell and regulates the switch from anabolic to catabolic...growth factors, including insulin. mTORC2 influences cell survival and cytoskeletal organization. Cancer Impact... promotes the conditions needed for uncontrolled cell growth and proliferation, including an abundant ...appears to signal upstream of Akt, also promotes cell survival and proliferation. mTOR Pathway Plasmids...provided below. mTORC1 Complex Symbol Name 4E-BP Eukaryotic translation initiation factor 4E, binding protein...protein 1 Cyclin D1 Also known as CCND1 eIF-4E Eukaryotic translation initiation factor 4E GBL/mLST8 MTOR...
  17. Five Popular Model Organisms

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    ... properties and processes with our own cells. Like human cells, yeast DNA is packaged into chromosomes...differentiation of β-cells in the the developing zebrafish pancreas. They first tagged these cells using plasmids...recapitulate the complex interactions between cancer cells, therapeutic drugs, and the rest of the body than...than studies in other model organisms or cell culture. For example, Scott Lowe’s lab utilized mice to study...to identify a set of mutations that made cancer cells more resistant to chemotherapy. You can find these...to optimally control gene expression in specific cells of the fly (Pfeiffer et al., 2010). Yeast (Saccharomyces...Saccharomyces cerevisiae) Yeast, one of the simplest eukaryotic organism, is a commonly used model organism in...
  18. To Codon Optimize or Not: That is the Question

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    ...mammalian cells. This was the first codon optimized membrane protein expressed in mammalian cells. In this...sequence. That means there are 61 possible tRNAs. Cells however, may not express all 61 of these tRNAs and...commonly, scientists codon optimize genes from eukaryotic organisms for expression in prokaryotic systems... are also optimized for expression in mammalian cells. For example, Henry Lester’s lab optimized the C...base-pairing mechanism for translation initiation in eukaryotes. Nat Struct Mol Biol 13:30–34 . https://doi.org...Caenorhabditis elegans GluCl ion channel genes for mammalian cells dramatically improves expression levels. Journal...
  19. Designer PUF Proteins for Any RNA Target

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    ...spatio-temporal control of gene expression within a cell. Thanks to the work of Huimin Zhao and colleagues...avenue of modifying and manipulating endogenous eukaryotic RNA.” Endless possibilities with PUF proteins...
  20. Plasmids 101: Gene, enhancer, and promoter trapping

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    ...fluorescent protein (GFP) was the reporter gene and green cells were observed in the kidneys at a specific developmental...genes of interest may not be expressed in the tissue/cell line you are working with. Development-specific...plain sight: what remains to be discovered in the eukaryotic proteome? Open Biol. (2019) 9:180241. DOI: https...10.7554/eLife.67667 Springer, S. P. Gene Traps. Plant Cell. (2000) 12(7): 1007-1020. DOI: 10.1105/tpc.12.7.1007...
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