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We narrowed to 762 results for: cell

Showing: 381 - 400 of 762 results
  1. Seeing Red: Simple GFP Photoconversion

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    Blog Post
    ...shown to work in plant, Drosophila and mammalian cells, and it may find wide use in biological research...turnover rate. In many cases, however, a GFP-tagged cell line or organism has already been made, and it would...made by accident. After exciting GFP-labeled plant cells at 405 nm instead of 488 nm, Sattarzadeh et al. ...spontaneous conversion did not occur. Tobacco suspension cell culture with cytosol-targeted GFP. White circles...photoconverted in plant, Drosophila, and mammalian cells. Photoconverted GFP is compatible with other FPs...
  2. The Michael Davidson Collection: One-Stop Shop for Fluorescent Proteins

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    Blog Post
    ...of fluorescent proteins and their use for imaging cell biology, Michael Davidson’s lab at Florida State...blue, and orange spectra. A comprehensive list of cell markers all tagged with mEmerald. Plasmids to monitor...From F-Actin to mitochondria, from the nucleus to cell membrane, this collection has fluorescently tagged... where your protein of interest localizes in the cell, use these markers as your guide. As Michael Davidson...Fluorescent proteins are] a whole new way of seeing cell biology, seeing what interacts with what, what affects...
  3. Institute for Protein Innovation

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    Collection
    ...unique recombinant antibodies targeting families of cell surface and secreted proteins from a collaboration...highly conserved proteoglycans crucial for regulating cell signaling during development. The IPI collection...
  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. PubMed...of chromatin interactions by biotinylated dCas9." Cell 170.5 (2017): 1028-1043. PubMed PMID: 28841410. ...
  5. Deep Dive: Fixing and Permeabilizing for Immunofluorescence

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    ...method for visualizing molecules of interest within a cell or tissue. In that introduction, we broke down the... large proteins that need a little help crossing cell membranes as they are not able to diffuse across...Permeabilization essentially punches holes in the cell membranes of your sample to allow antibodies better...target protein that is still on the inside of the cell. However, assuming you do need to permeabilize, ...For example, saponin interacts with cholesterol in cell membranes and leaves many membrane-associated proteins... organic solvents. However, detergents can lyse cells or cause you to lose soluble proteins from the sample...proteins in place, while allowing antibodies into the cell where they could bind to intracellular epitopes....
  6. Simple CRISPR-based Epigenetic Editing: dCas9-directed DNA Demethylation

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    ...enzymatic activity cause demethylation?  Dividing cells depend on DNA methyltransferase 1 (DNMT1) to copy...methylate sites blocked by dCas9. Within a few rounds of cell division, the original methylated strand is diluted...dCas9 expression and pLM-CMV-R-Cre. Selection for cells stably and highly expressing these constructs can...can be achieved by fluorescence-activated cell sorting, and stable gRNA expression can be achieved using...TETs compete with DNMT3 activity in pluripotent cells at thousands of methylated somatic enhancers. Nat...hydroxy)methylcytosine and its oxidized derivatives. Cell 152, 5 P1146-1159. https://doi.org/10.1016/j.cell...CRISPR-based approach for targeted DNA demethylation. Cell Discov 2, 16009. https://doi.org/10.1038/celldisc...
  7. Drew Endy Introduces the Biobrick Public Agreement Plasmid Collection

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    Blog Post
    ...metabolite in a cell. The only way to do that at scale right now is to grow up a bunch of cells, sacrifice ...capable of storing data and computing inside living cells. He's also a co-founder of the BioBricks Foundation...as an operating system for engineering an entire cell. Typically when people use plasmids, they are trying... you could imagine engineering the entirety of a cell. That's a big long-term technical challenge. We ...That's central to everything that goes on inside a cell. Until we get a handle on precise, forward engineering...scale, it's going to be tricky to tame the rest of a cell. The BIOFAB plasmids represent the first systematic...
  8. Fluorescent Proteins 101: Photoactivatable Fluorescent Proteins

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    Blog Post
    ...continuously synthesized and degraded within the cell, so at any given time, an FP-chimeric protein may...Since emission of green light is more phototoxic to cells, most scientists working on in vivo imaging models... this is not ideal for experiments in mammalian cells. Dendra2 is another monomeric PA-FP which unlike...tetrameric. Tetrameric PA-FPS are better for whole cell imaging and studying organelle trafficking. Monomeric...the photoactivation step can actually harm your cells before your experiment even begins! If you are performing...optical live imaging of proteins, organelles, and cells. Similar to FPs, PA-FPs allow for non-invasive labelling...dynamics of mitochondria in healthy and apoptotic cells (9). PA-FPs have helped to revolutionize the field...
  9. DAP arrays for multiplex gene editing

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    Blog Post
    ...different types of human cells, including T cells and hematopoietic stem and progenitor cells. Now with the DAP...to enable multiplex gene editing in a variety of cells and organisms. However, lengthy genetic payloads... over 50% averaging editing efficiency in human cells. MBE with DAP array also exhibited reduced Cas9-... editing, and nuclease editing, in virtually any cell type or organisms of interest with only minimal ...
  10. Screening for Successful Genome Editing with Digital PCR

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    Blog Post
    ...to quantify rates of mutation in a bulk or single cell-derived genomic DNA sample as part of a precision... successfully analyzed gDNA from a few thousand cells from single wells of a 96-well plate without prior... that they are easily able to distinguish single-cell derived samples with mono-allelic mutations versus...Isolation of single-base genome-edited human iPS cells without antibiotic selection. Nat Meth 11, 291–293... and Highly Specific Screening of Genome Edited Cells. PLoS ONE 11, e0153901–17 (2016). PubMed PMID: 27089539...mutagenesis induced by CRISPR-Cas nucleases in human cells. Nature Biotechnology 31, 822–826 (2013). PubMed...
  11. Lentivirus Plasmids

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    Collection
    ...Lentivirus can transduce both dividing and non-dividing cells without a significant immune response. These viruses...expression of hTERT, used to create immortalized cell lines. See Hayer et al. (2016) for additional selection...pBOB-EF1-FastFUCCI-Puro 3rd Encodes FUCCI reporters for cell cycle analysis. Puromycin selection. Kevin Brindle...
  12. SunTag and Fluorescent Imaging

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    Blog Post
    ...potential to form aggregates and may be toxic to the cell. Here comes the SunTag How does SunTag fix these...enables single molecule tracking  within living cells without affecting protein function, thereby creating...attempted single-molecule imaging deep inside the cell, in the nucleus and cytoplasm. Again, they found...SunTag constructs would avoid negative effects on cell physiology. Having seen that mitochondrial tracker...amplification in gene expression and fluorescence imaging.” Cell 159(3) (2014):635-46. PubMed PMID: 25307933. PubMed...
  13. Celebrating Outstanding CRISPR/Cas9 Achievements at the Dr. Paul Janssen Award Dinner

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    Blog Post
    ...already available today to cure sickle cell anemia in stem cells but this can’t be used in people until... audience discussed how J&J is already modifying cell and animal genomes to test hypotheses of disease...and more about the how to use genome edited stem cells to treat disease. As for me, I continue to be amazed... much we have yet to learn. As Dr. Mello said, “Cells have been in the information age for billions of...
  14. Choosing Your Perfect Empty Backbone

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    Blog Post
    ..., or express the insert they carry in the target cell. These vectors allow you to test the function of...If you are planning to track your protein in the cell or purify it – and you do not have a specific antibody...selection cassette to screen for positive transfected cells. The addition of an in-frame fluorescent fusion ...get away with generating transiently transfected cells, you will not need a mammalian selection cassette.... Other vectors can be expressed in fly culture cells like S2 and carry the metallothionein promoter (...
  15. Hot Plasmids: Winter 2025

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    Blog Post
    ... primary cells. The authors used this platform to assay dozens of GPCRs across many cell types in...Prime editing (PE), initially developed in human cells, has been uniquely challenging to apply in dicotyledonous...labeling approach using these constructs in HEK 293 cells (Smith et al., 2024). They then used single-molecule..., CLIPf-, and CLAP-tagged proteins for mammalian cell expression. These plasmids will be useful not only...recordings of spontaneous activity in human stem cell-derived neurons expressing ASAP5-Kv. C) Cultured...GPCR activity with a universal biosensor platform. Cell, 187(6), 1527–1546.e25. doi: https://doi.org/10.1016...
  16. MXS Chaining

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    Blog Post
    ...construct was then introduced to HeLa cells (Figure 1). The resulting HeLa cells show robust labeling, with strong...well as cellular processes like gene expression and cell migration (Sladitschek and Neveu, 2015). Origin...imaging or flow cytometry applications in mammalian cells. The modules used in this method include fluorescent...components, one can generate constructs to visualize cell cycle dynamics, titrate inducible transgene expression...were used to label subcellular structures in live cells. Four individual expression constructs were created...applications in flow cytometry approaches in mammalian cell culture systems (their original goal). Their work...
  17. Cpf1 Update: Comparison to Cas9 and NgAgo

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    Blog Post
    ...RNA-guided endonuclease of a class 2 CRISPR-Cas system." Cell (2015). PubMed PMID: 26422227.   Potential ...particularly helpful for targeting non-dividing cells, which are difficult to modify through homology-... Cpf1 orthologs known to be active in mammalian cells, LbCpf1 and AsCpf1. In both reports, on target editing... (RNPs) failed to induce off-target editing in a cell culture model. What we still don't know about Cpf1...reveals specificities of Cpf1 endonucleases in human cells. Nat Biotechnol. 2016 Jun 6. PubMed PMID: 27272384...specificities of CRISPR-Cas Cpf1 nucleases in human cells." Nature Biotechnology (2016). PubMed PMID: 27347757...RNA-Guided Endonuclease of a Class 2 CRISPR-Cas System. Cell. 2015 Sep 23. pii: S0092-8674(15)01200-3. doi: 10.1016...
  18. Tips for Using FRET in Your Experiments

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    Blog Post
    ...(FRET) microscopy imaging of live cell protein localizations. J Cell Biol. 2003 Mar 3;160(5):629-33. ...measurement of single molecule interactions in living cells using a microscope. Historically, molecular interactions...suitable for studying interactions within living cells. By coupling fluorophores to proteins, pioneers ...directly detect protein/protein interactions in living cells. Since then FRET has also been used to measure conformational...efficiency and cross-talk. Methods to Measure FRET for Cell Biology Studies Several methods have been used over...microscopy: monitoring protein interactions in living cells. Bioessays. 2012 May; 34(5):341-50. doi: 10.1002...
  19. Viral Vectors 101: Viral Vector Elements

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    Blog Post
    ...genetic cargo, typically an expression construct, to cells/organisms. This is often cDNA, shRNA, or something...perform very similar functions to infiltrate the host cell and deposit viral cargo. Gene expression While AAV...what will be delivered and expressed in the host cell from the transfer plasmid. Viral packaging and entry...altered tropism of AAV to target different tissue or cell types. AAV also requires some back up from adenovirus...promoter that you wish to deliver to your target cells. In adenovirus, the ITRs serve as a type of origin...deficient. This is typically supplied by the production cell line (HEK-293) during production. Fun fact: There...
  20. Expanding the Targeting Scope and Editing Efficiency of Adenine Base Editors

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    Blog Post
    ...gives a talk at the Cell Symposia: Gene- and Cell-based Therapies: CRISPR, Stem Cells, and Beyond meeting...III product is produced and can infect bacterial cells. If a phage does not deliver an active variant, ...passage from the infected to a fresh uninfected host cell culture). This dilution step represents the major...but gets manually passaged from an infected host-cell culture to an uninfected culture which results in...
Showing: 381 - 400 of 762 results