We narrowed to 813 results for: cell

...interaction networks of specific proteins in living cells. Until recently, the enzymes most frequently used...but requires H2O2, which can be toxic in living cells. BioID was derived from biotin ligase and uses far...Alexander Green lab found a solution: a low-cost, cell-free detection assay that can be completed without...family, known to be involved in cytoskeletal control, cell growth, and endocytosis. Recently, the Sidhu group...to studying membranes, organelles, and other subcellular compartments is via proteomics--the study of ...

...slightly more efficient and less toxic to mammalian cells (Allen, et al., Frontiers in Genome Editing).  Some...enhance CRISPR-Cas genome editing in human primary cells. Nat Biotechnol 33, 985–989 (2015). https://doi....Enhance CRISPR Genome Editing Systems in Mammalian Cells. Frontiers in Genome Editing, 28 (2021). https:/...deactivation with photocleavable gRNAs. Molecular Cell 81, 7, 1553-1565 (2021). https://doi.org/10.1016...evolved ways to prevent degradation of important cellular RNA molecules with post translational modifications...transfection efficiency and even track localization in cellular experiments. There are many suitable dyes to choose...

...also gives cells antibiotic resistance to neomycin so that you can select the population of cells with the...Only a small percentage of the proteins inside a cell have a commercial antibody against them. There’s...antibody. It’s an epitope not found in human or other cells. It was made artificially. That means you aren’t...

... CRISPR plasmids. Each point represents a single cell, and each color represents the population obtained...

...enhancers in the retina alters photoreceptor and bipolar cell fate specification, yet differs from deleting both...

...successfully infected/expressing cells by flow cytometry. The isolated cells were injected into mice and imaged...to changes in intracellular calcium and is useful for direct imaging of events in cells and brain explants...packaged into a retrovirus for infection of host cells. The fluorescent moiety of the BRET reporter was...imaging multiple proteins at the same time in live cells using fluorescent proteins (FPs) can be problematic...available through Addgene (Plasmid #83926). Live-Cell Voltage Sensor  Ingaki and colleagues (8) were interested...including monitoring multiple cellular events such as the dynamics of subcellular structures and gene expression...other cellular proteins. BRET-based biosensors utilizing NanoLuc® luciferase Many intracellular sensors...

...function using transcriptional recording sentinel cells! 🎵 On the 11th day of CRISPR, Addgene gave to me...activation and interference screens for primary human T cells🎵 On the 3rd day of CRISPR, Addgene gave to me: ...Enhanced prime editing systems by manipulating cellular determinants of editing outcomes🎵 On the 5th ...

...Class 2 CRISPR-Cas System. Cell 163:759–771 . https://doi.org/10.1016/j.cell.2015.09.038 Find plasmids...are capable of cleaving genomic DNA in mammalian cells and zebrafish embryos, and they can be used to modify... adapted for targeted RNA cleavage in mammalian cells. The REPAIR (RNA Editing for Programmable A to I...reveals specificities of Cpf1 endonucleases in human cells. Nat Biotechnol 34:863–868 . https://doi.org/10.1038...specificities of CRISPR-Cas Cpf1 nucleases in human cells. Nat Biotechnol 34:869–874 . https://doi.org/10.1038...

...editing reagents into cells. Viral vectors, because of their natural ability to infect cells, have emerged as...which poses a challenge for efficient delivery into cells, particularly via viral vectors. While viral delivery...for gene editing and allows targeting of specific cell types, it has a limited capacity to carry large ...biolistic, or PEG-mediated transformation into plant cells. Conclusion & Future Directions TnpB represents...

...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...double-strand break (DSB). DSBs can be caused by intracellular factors such as nucleases and reactive oxygen...

... be expressed in the same cell, but not necessarily at the same subcellular compartment as the opsin or...modulate the activity of neurons and other brain cells. Since the opsins or chemogenetic receptors used...neuropil conceals identification of opsin-expressing cells). For other things to keep in mind when making fluorescent...cerevisiae by use of an epitope addition method. Mol Cell Biol 8:2159–2165 . https://doi.org/10.1128/mcb.8.5.2159...

...and Protein Modifications in Cells and Tissues in Situ. Curr Protoc Cell Biol 89:e115. https://doi.org... like proximity ligation, immuno-PCR, and single-cell applications (Hegazy, et al., 2020; Niemeyer, et...epitope and transcriptome measurement in single cells. Nat Methods 14:865–868. https://doi.org/10.1038...

...in transfected eukaryotic cells, allowing for them to be used as intracellular inhibitors.  Aptamers are...small enough to be expressed in bacterial and other cell systems. Since the majority of these alternative...the constant region. Nonspecific binding, caused cell receptors for the constant region, is also reduced..., peptides, amino acids, drugs, metal ions, and cells. They can be used either with or as fluorophores... may sound. Validated antibodies are still an excellent option for many applications, and frankly, if ...

...delivered using AAV injection, the majority of the cells surrounding the injection site will become infected... ensure that the reporter remains silent until a cell or tissue-specific Cre is provided. Since the FLEx...used to study the physiology or behavior of certain cell populations.  Acknowledgement:Through a partnership...FLEX switch targets Channelrhodopsin-2 to multiple cell types for imaging and long-range circuit mapping...for monitoring Cre-mediated recombination at the cellular level in the mouse. 2003 PubMed PMID: 12665802...

...plasmids to upregulate their expression in specific cells. With a more concrete understanding of the molecular...molecules targeting SMN1 and its partners in mouse cell lines. Dr. Di Schiavi hopes that these studies will... of ~30 patient derived peritoneal mesothelioma cells lines and assess their tumorigenesis. These experiments...

... question about what should go into a cell, hover over the cell and instructions will pop up. When you...spreadsheet (Figure 2) and are described in Table 1. Some cells have drop-down options for you to choose from, while... into the appropriate full and partial sequence cells. *Note: If you believe you need to deposit a collection...

...Plasmids designed to express genes in a given host cell type are generally broken down into two broad categories...purpose and mechanism of polyadenylation vary across cell types, but polyadenylation generally serves to promote...additionally act as a quality control mechanism to rid the cell of mis-folded RNAs. Eukaryotic termination and polyadenylation...efficient rabbit beta-globin mRNA 3' end formation. Cell. 1987. PMID: 3568131.  Hager S, Frame FM, Collins... thought that poly(A)s are used to control the cellular concentration of regulatory RNAs and may additionally...signal by using in vitro analyses. Molecular and Cellular Biology. 1992. PMID: 1333042. PubMed Central PMCID...

...genes should be ‘read’ by the cellular machinery. This is how most cells in the body contain the same ...visualise changes in histone methylation in living cells. Essentially this reporter construct consists of...recognise lysine 27 methylation. When tested in living cells where methylation of these sites was controlled,...fluorescent reporters of histone methylation in living cells." Journal of the American Chemical Society 126.19...complex of DNA and histone proteins that compacts cellular DNA into chromosomes and reduces the risk of dangerous...the more compacted it becomes. This prevents the cellular machinery from physically interacting with the...

...graduate student studying plant development and cell-cell communication in the Nimchuk Lab in the Biology...untransformed seedlings or callus (undifferentiated plant cell culture), which is great for a wide variety of applications...

...Fluorescence Activated Cell Sorting (FACS), allowing for enrichment of successfully targeted cells that can be used...investigating genetic mechanisms related to morphogenesis, cell fate specification, and human disease.     Sun,...

...school at MIT. “I read some of the seminal papers on cell cycle discovery from Lee Hartwell and Paul Nurse...genetic screen to identify the factors that regulate cell division. And that really got me hooked on genetics...high-resolution tracking of more than 1 million cancer cells under drug treatment.” Stegmeier especially finds...

...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...10.7554/eLife.67667 Springer, S. P. Gene Traps. Plant Cell. (2000) 12(7): 1007-1020. DOI: 10.1105/tpc.12.7.1007...

...). The Heroes of CRISPR. Cell, 164(1), 18–28. https://doi.org/10.1016/j.cell.2015.12.041  Musunuru, K....birth. Within a seven-month whirlwind of developing cell and mouse model systems, testing base editing variants...reporting genome editing by CRISPR in mammalian cells appeared in 2013 (Cong et al., 2013; reviewed in... The first ABE was about 50% efficient in human cells on average, but its effectiveness varied depending... the chromosomal location, sequence context, and cell type. Multiple labs worked to improve its effectiveness...would be tested for their base-editing efficacy in cellular models of KJ’s CPS1 mutation. Every genetic target...base editors that could target KJ’s mutation in cellular models tested both the SpG and SpRY variants of...

... edit A → Y (Y = T or C) in 67.17% of screening cells (Tong, Wang, et al., 2023). Based on this promising...Cas9 nicks the non-edited strand to encourage the cell to repair the DNA using the edited strand as a template... efficient A•T-to-C•G base editing in mammalian cells and embryos. Nature Biotechnology, 42(4), 638–650...programmable T-to-G and T-to-C base editing. Molecular Cell, 84(7), 1257-1270.e6. https://doi.org/10.1016/j....efficient T-to-G and C-to-G editing in mammalian cells. Nature Biotechnology, 42(10), 1538–1547. https:...the base editor. Black arrows indicate natural cellular processes. Created with BioRender.com. The...

...to detect dead or dying cells so that you can base your analysis on living cells only (for example, propidium...This tends to be most problematic when staining cells or tissues that are the same species as your primary...propidium iodide only stains dead cells). Compensation controls address the spectral overlap that occurs...Quantitative Fluorescence Microscopy.” Journal of Cell Biology, vol. 185, no. 7, Rockefeller University...

...two-photon microscopy. Cell. 2022 Aug 16. pii: S0092-8674(22)00916-3. doi: 10.1016/j.cell.2022.07.013 pYtags...Calcium Indicator. Front Cell Dev Biol. 2022 Jun 29;10:880107. doi: 10.3389/fcell.2022.880107. KRaION potassium...sensor relies on a change in localization to the cell membrane and not a direct change in the fluorescent...of receptor tyrosine kinase signaling in living cells. bioRxiv 2022.08.13.503850; doi: 10.1101/2022.08.13.503850...better-matched to the potassium concentrations in cells than existing sensors. Using genome mining and structure-guided...fluorescence unit fused with TRansmembrane region-to-IntrAcellular loop linkers” (MTRIA for short), where a fluorescent...inserting a circularly-permuted GFP into an intracellular loop of various G-protein-coupled receptors....

...use electro-competent cells instead of the more common chemically-competent cells. You should perform, ... manufacturer’s instructions for your competent cells. For most standard cloning, you can transform 1-...1-2μl of your ligation reaction into competent cells such as DH5alpha or TOP10. If using much less total...colonies, you might want to use higher competency cells. Additionally, if your final product is going to...

...Mammalian cells provide scientists with the means to study biological processes on the cellular level instead...with tissue culture The cultivation of mammalian cells in the lab, or tissue culture as it is commonly ...

... inosine, which is treated like guanosine by the cell, creating an A to G (or T to C) change. Adenine ...

... engineering in Saccharomyces cerevisiae. Microb Cell Fact, 12 :96. https://doi.org/10.1186/1475-2859-...

...high light doses to the cells. Thin static samples Ex: Fixed monolayers of cells or thin (<15 μm) tissue...1). Thin dynamic samples Ex: monolayers of live cells with fluorescently labelled, motile structures These... 10s of nanometers. Thick dynamic samples Ex: 3D cell cultures, small model embryos >15 μm Thsee are some...Total internal reflection fluorescence microscopy in cell biology. Methods Enzymol 361, 1-33 (2003). PubMed...Richardson DS, Lichtman JW. Clarifying Tissue Clearing. Cell 162, 246-257 (2015). PubMed PMID: 26186186.  Additional...Biological Imaging and a Lecturer on Molecular and Cellular Biology at Harvard University. No matter whether...Biological Imaging and a Lecturer on Molecular and Cellular Biology at Harvard University.     Additional ...

... make it difficult to properly gate your desired cell population. By compensating between fluorescent ... your fluorescent markers are staining for. If a cell is positive for both markers, it will show up as...Figure 3: Flow plot for a double positive sample. The cell population in the top right corner of the plot is...learning! Ashlyn has a research background in CD8+ T cells and cancer immunotherapies. She is currently a research...

... in mammalian cells Hu et al. compared xCas9 activity with wt SpCas9 in mammalian cells, finding xCas9...NG and GAT PAMs. xCas9 3.7 Activity in Mammalian Cells Construct NGG PAM NGA PAM NGC PAM NGT... percent editing efficiencies (edit frequency in cell population measured with NGS) are shown as percentages...

... acid (DAP), a component of the cell wall. Once in the recipient cell, the CRISPRi DNA (purple) flanked... is propagated during normal DNA replication and cell division. Mobile-CRISPRi does not disrupt gene function...mobilize these plasmids for transfer to recipient cells during a tri-parental mating scheme. Mobile-CRISPRi...

... Typically, Addgene uses electrocompetent Stbl4 cells when performing amplifications, and we use electroporation...DNA. This bias can be counteracted by growing the cells on solid plates, where each transformant forms its...own colony, uninfluenced by the growth of other cells. For libraries where the plasmids are all very similar...

...reliably detect HMOs. Fatima’s first design is a whole cell biosensor with two components - an enzyme that breaks...binding results in an increase in fluorescence of cells that actively produce the HMOs. Fatima has demonstrated...out Fatima's recent publication on her HMO work in Cell Chemical Biology! Additional Resources on the Addgene...Awardees: Xin Zhou and Fatima Enam. There were many excellent applicants but Xin and Fatima stood out for their...proposes using this sensor to detect HMOs found on cellular surfaces. After incubating the sensor with bacteria...

...they were barely effective at editing eukaryotic cells — at least, until they met the directed evolution...components. It drove 19% integration in HEK293T cells (more than 500 times better than the precursor it...R. (2025). Programmable gene insertion in human cells with a laboratory-evolved CRISPR-associated transposase...

...to supplement your cells with biliverdin for maximal brightness. In mammalian cells, one of the improved...Imaging Center at UCSF. A common requirement for live cell imaging experiments is the ability to follow multiple...

...would continue on with my academic dream of studying cell division. However, after 6 years in the business...Cambridge University where he studied mechanisms of cell division. Recently Seán got the entrepreneurial ...information on ELISA troubleshooting, ELISA kits and cell death assays. You can find Seán on twitter @Macfhearraigh...

...and see how different parts of the brain or the cells within them work together or perhaps compete against...two-photon properties, so you could activate single cells in arbitrary patterns in the brain. Addgene: Do ... different – an awake monkey is different from a cell in a dish. I always tell people, 'Be driven by your...

...gene expression in both dividing and non-dividing cells, and relative ease of large-scale production. In...

...transformation efficiency of the strain: when asking the cell to perform multiple recombination events, all linear...linear fragments need to get into the same cell. For simple cloning requiring just one or two recombination...recombination events, homemade competent cells of 107 CFU/μg are perfectly fine, yet performing multiple modifications...modifications will require ultracompetent (109 CFU/μg) cells. Primer design Using specific primer design (Figure...

... investigate how the virus interacts with human cells. Addgene’s mammalian target plasmids express these...for SARS-CoV-2 entry into human lung epithelial cells (Biering et al., 2021). In their search, they found...packaging) and contain an IRES-Puro marker for stable cell clone selection. For more information on these plasmids...Bajic G, Harrison SC, Wesemann DR (2021) Memory B cell repertoire for recognition of evolving SARS-CoV-...depends on its spike protein to bind ACE2, the host cellular receptor. To more easily study the spike variants...

...machinery, and could thus be used in non-dividing cells. Cas13 enzymes also don’t require a PAM sequence... a maximum of 28% editing efficiency in HEK293T cells, as assessed using RNA-seq. Since the REPAIRv1 machinery...including reversibility and use in non-dividing cells. With the expanded targeting ability using both ...Functionally Orthogonal Type VI-A CRISPR-Cas Enzymes." Mol Cell. 66(3) (2017):373-83. PubMed PMID: 28475872. Find...

...broken out of cells with a solution of salts, detergent, and ball bearings. Then a cellulose dipstick is... kits and typically follow the same principles: cells are lysed, RNAs and proteins are removed to leave... plant, microbe, blood, or mammalian cells or tissue Product: total nucleic acids While glass or silica...and RNA from plants, microbes, blood or mammalian cells in 30 seconds or less without using a pipette.  ... could be digested with restriction enzymes.  Cellulose nucleic acid purification Starting material: plant...silica are commonly used to bind and purify DNA, cellulose also efficiently binds, or at least entraps nucleic... absorb the nucleic acids. Containinants bind cellulose less tightly than nucleic acids, so placing the...

...roots, as functional chloroplasts and leaf specific cell types are missing in roots. The development of transgenic...transformation” usual means that neither a stable cell line or plant is regenerated from the transformed...with the gene of interest is transferred into the cells. But for C. roseus, Agrobacterium infiltration into...Intrinsic GUS-like activities in seed plants." Plant cell reports 9.1 (1990): 1-5. PubMed PMID: 24226366. ...fused to a protein of interest to elucidate the subcellular localization of your protein of interest. Find...

...editing systems by manipulating cellular determinants of editing outcomes. Cell, 184(22), 5635-5652.e29. https...Guide RNA and Target DNA. Cell, 156(5), 935–949. https://doi.org/10.1016/j.cell.2014.02.001 Yan, J., Oyler-Castrillo...type of edit, genomic context, delivery strategy, cell type, and goal of the experiment. Now, onto the ...nicking of the unedited strand and encourage the cell to use the edited strand as a template during DNA...also allows certain unintended edits to escape cellular surveillance. To limit unintended incorporation...https://doi.org/10.1016/j.cell.2021.09.018 Nelson, J. W., Randolph, P. B., Shen, S. P., Everette, K. A...

...What works well in one cell or neuron type may not work well for a neighboring cell type, even within the... conditions (3,5,8), injection titers (1,2), and cell types used for packaging viral particles (6), can... vector performance in various brain regions and cell types. Power in numbers A Pubmed search for “AAV...options while AAV8 (82%) and AAV9 (84%) were both excellent at infecting our target neurons (Figure 1). However...

...using an electric charge to help the DNA enter the cells. Some samples require a reduced antibiotic concentration...concentration or need to be transformed into different cells than were originally requested. Most of our samples... Start by scanning the sample barcodes into the cells in the same order that they exist within the rack...storage process - from deposited DNA to transformed cells and finally to bacterial glycerol stocks that are...

...not generally in a cell’s best interest to overexpress a protein. Energy and cellular resources are being...being spent to make something the cell doesn’t need to make. Eukaryotes and some bacteria deploy proteosomes...proteosomes to degrade what the cell might consider junk protein. Though there are a number of chemical and...same manner as it would have in the context of a cell. FLAG tags can be cleaved by enterokinase, which...