...lifecycle. Halloween genes The Halloween genes are a set of cytochrome P450 genes discovered in Drosophila...Mutations in these genes are lethal, associated with defective exoskeleton formations. These genes were appropriately...1983): 813-816. Gilbert, Lawrence I. "Halloween genes encode P450 enzymes that mediate steroid hormone...We’ve had teams dressed up as plasmids, Blugene, and the Addgene ping pong table. This year, in addition...Additional resources on the Addgene blog Read about company culture at Addgene See some of our previous ...costumes, and spooky science stories. Yes, please! At Addgene, we love finding ways to incorporate science themes...Halloween contest, we’ve also carved pumpkins (yes, Blugene made an appearance there too) and shared fascinatingly...

...mixture of XFP genes. Stochastic multicolor labeling is possible when each of the XFP genes is introduced...fluorescent protein (XFP) genes in a transgene. When multiple copies of the transgene cassette are introduced...result in a combinatorial expression of these three genes with different copy numbers, producing dozens of...modern neuroscience, plasmid or viral vector-mediated gene delivery is more common than conventional transgenic...transgenic strategies. In such vector-based gene delivery systems, the stochastic expression of XFPs is possible... Plasmid concentrations and AAV titer - The XFP genes have to be introduced at ~2 copies per cell per ...plasmids (Addgene #104102 - #104105) using in utero electroporation or with AAVs (prepared with Addgene #104110...

...knockout of a target gene and expression of a separate gene. In these mouse lines, gene knockout can be induced... type specific) control of DNA recombination and gene expression can be advanced by the coordinated use...recognizes FRT sites and initiates site directed gene recombination between those sites. FRT sites and...sequence of interest can lead to poor expression of genes within that sequence and should therefore be prevented...recombination of the loxP sites and thereby to the gene knockout. In this experiment it is possible to compare...morphology and synaptic connectivity before and after the gene knockout in the same mouse.   Scientists always...researcher exquisite control over expression of multiple genes in specific cells at specific times. Many thanks...

...varies across targets, they tested two genes in mice. For both genes, they saw indel formation and phenotypic...in vitro and germline genome editing, but in vivo gene editing approaches have been limited by problems...viral vectors (AAV) are commonly used for in vivo gene delivery due to their low immunogenicity and range...al. successfully used CjCas9 with AAV to target genes in mouse muscle and eye tissue. Neisseria meningitidis...cell is transduced by both AAVs, the full length gene and/or protein is reconstituted. One way to reconstitute...split intein spCas9-AAV toolbox that retains the gene-targeting capabilities of full-length SpCas9. This... of plasmids includes AAV-Cas9C-VPR for targeted gene activation. Split inteins have also been used to...

...CRISPR reagents and other specific gene sequences available from Addgene. Dr. McMurray hopes that by demonstrating...lab has generated mice wherein it's possible to delete the functional portion of the Nfix gene using Cre...phosphomannomutase (PMM) activity due to mutations in the PMM2 gene. Videira’s group recently reviewed and reported ...interactions and how these interactions regulation gene expression. Recent studies have shown that the conditions... Smith Syndrome are due to mutations in the NFIX gene. These diseases are characterized by overgrowth ...studying the function of the mouse Nfia, Nfib and Nfix genes in brain development since 2000 and have shown several...NFIX function. They will then mutagenize the NFIX gene and test whether variants of unknown significance...

...understanding of B. subtilis gene functions and interactions. The single-gene deletion library is derived...studying the phenotype of an essential gene, the CRISPRi Essential gene Knockdown library was constructed ...Bacillus subtilis libraries with Addgene – the B. subtilis Single Gene Deletion Library—Kanamycin and the...compatible cloning sites for easy cloning of your genes of interest. In order to improve the study of specific...cassette. However, it was unknown whether variations in gene expression from these polycistronic cassettes could... stoichiometry impacted reprogramming and global gene expression patterns. Polycistronic cassettes that... the CRISPRi Essential gene Knockdown library. Although B. subtilis has a fully sequenced genome, many...

...found in the same gene. If we only have small, directed editing abilities, any gene editing treatment ...functional copy of the entire gene, allowing a one-size-fits-all approach to gene replacement therapy for most...insertions, leaving a several kilobase-sized gap in the gene editing field. The AbuGoot lab has now developed...to work. (It was also found to be independent of gene repair.) This lowers the chance of the insert being...activity. They now had a system that could integrate genes up to 36 kb in length, with an integration rate ...system.     Fig. 2: Schematic of programmable gene insertion with PASTE. The PASTEsystem involves insertion...primary cells, and can be easily programmed for new genes. In comparison with other large insert techniques...

...EGFP can be used as positive controls for gene editing or gene activation, while the BRAF and MAP3K4 gRNAs...provide the Brunello (targeting human genes) and Brie (targeting mouse genes) pooled libraries from the labs...editing. You can also enhance expression of your gene of interest with a variety of Cas9 activators available...pooled gRNA libraries that can be used to screen for genes involved in a wide variety of cellular processes...80,000 gRNAs to target around 20,000 individual genes. We provide enough lentivirus for you to both perform...and member of the Addgene Advisory Board) says: "When you're setting up to do a genetic screen, you need... are members of the Addgene Advisory Board. Additional Resources on the Addgene Blog Get the Most from...

...Versatile Viral Tool for Gene Expression in Mammals Additional Resources on Addgene.org Find Ready-to-Use ...the cell on their way to the nucleus where their gene cargoes can be expressed. The bottom line is that...successful transduction. In another example, neuronal gene expression by an anterograde AAV was shown to drop...cell, you may not be able to detect AAV-mediated gene expression in a target cell. Practical considerations...experimental setup. Some experiments require higher gene expression and therefore higher titer than others... to such a high titer when looking for effective gene expression. How do you achieve high titers in the...therapy : the journal of the American Society of Gene Therapy. 2008;16(7):1189-1199. doi:10.1038/mt.2008.103...

...all known genes. This is a perfect example of an unbiased, reverse screen – all known genes are assayed...of knocking out the genes of interest (or the whole genome), they knock down gene expression temporarily... a biological process. Players can be proteins, genes, enzymes, drugs, or anything else that plays a role...where there is removal of known factors (such as a genes) and the loss of those factors is assessed. The ...especially useful if you are interested in studying genes whose knockout would be lethal to cells and thus...The two most common methods of manipulation are genetic knockout mutations and treatment with small molecules...selection would work is if you are trying to identify genetic conditions which convey resistance to a drug. You...