...lab that expresses the HIV gag, pol, rev, and tet genes. It can be used with 2nd or 3rd generation lentiviral...the Zhang lab expresses Cas9 from Streptococcus pyogenes with an invariant sgRNA scaffold and cloning sites...Addgene!) pX330-U6-Chimeric_BB-CBh-hSpCas9 - The S. pyogenes Cas9 (SpCas9) has been widely popular in genome...genome engineering. For use in human cell lines, the Zhang lab codon-optimized SpCas9. Using the BbsI restriction...cassette that makes it less efficient in some cell lines. pSpCas9(BB)-2A-Puro (PX459) V2.0 was made available...from the Trono lab that contains the gag and pol genes. It also requires pRSV-Rev and the envelope expressing...lentiGuide-Puro - This plasmid expresses the S. pyogenes CRISPR chimeric RNA element with customizable ...

...between MARCH5 and WSB2 genes using Cas12a’s ability to knock out multiple genes in parallel. Lastly, this...individually (~20,000 lanes/50 mLs) or through two polycistronic expression vectors (3570 lanes/50 mLs) coexpressing...frankenbodies to amplify the signal.  Liu et al. Genes Cells. 2021. https://doi.org/10.1111/gtc.12893, ...screening methods have primarily used Cas9 to knock out genes, researchers at the Genetic Pertubation Platform...library. Overall, Cas12a’s ability to target multiple genes within a single cassette provides increased simplicity...individually expressed proteins run in separate lanes. B: individually expressed and coexpressed proteins...gene activation for both reporter and endogenous genes. It is highly specific in mammalian cells without...

...Research the brightness of your fluorophores before buying and try to inversely pair brightness with abundance...sensitive moment.   Fig 1: Blugene fading into darkness because they accidentally left their antibodies...Type Westerns and ELISAs mostly use HRP, a chemiluminescent conjugate that can be activated to emit light...we'll keep it simple. If you follow the two basic guidelines below, you’ll likely be able to create a small...small, usable panel.  First, fluorophores vary in brightness. You don’t want a super-bright fluorophore, like...good match for your experiments, and avoid the awkwardness of getting the right antibody with the wrong ... Boston University Flow Core. Fluorochromes Brightness Chart. Boston University Flow Core. Retrieved...

...achieve success in this business. A good presentation can help win a business plan competition and advance...LabSpaces Blog Find a Buisness Plan Competition Good Relations - PR for the Biotech Business - Posted on Nature.com... Dr. Mike Koeris, co-founder and current VP of Business Development & Operations of Sample6, for advice...2009 and tested in the “market” by competing in business plan competitions. After much learning, the focus... investors to the next stage of diligence." In business competitions everything is conceptual, and the...focusing on concept development and participating in business competitions. When the team was unable to secure...became first COO, then moved on to become VP of Business Development & Operations. Starting a biotech...

... and release IL-36 cytokines. Keratinocytes are the main source of IL-36 cytokines in the skin making ...surrounding IL-36 biology. “Little is known how IL-36 cytokines actually get out of keratinocytes and induce their...researcher at University Hospital Zurich. IL-36 cytokines are a potent inducer of an autoinflammatory loop...Congratulations Mark Mellett! Siddharth Prakash: X chromosome genes involved in Turner syndrome Turner syndrome (TS)...can lead to cardiac developmental defects. Eight genes from the X chromosome are expressed at significantly...from Addgene, the lab will express these candidate genes in TS iPSCs to identify whether any rescue cell ...CRISPR plasmids to generate deletions of candidate genes in euploid iPSCs. “The BeHEARD Addgene reagents ...

...variety of genes with GFP. These plasmids are available through Addgene, and the stem cell lines we’ve made...is still inefficient, particularly in human cell lines. Furthermore, the quality control necessary to ensure...information and images generated from these cell lines can be found in the Cell Catalog on our data portal...different human cell types, and while most of the genes we’ve tagged are widely recognized markers of cellular...initial set of 10 plasmids representing 10 human genes and will add more to the collection later this year...everywhere To find out more about gene edited hiPS cell lines generated using the Allen Institute for Cell Science...collection includes systems for tagging mammalian cell lines, Drosophila cells, and C. elegans. In addition to...

...fluorescent proteins, and luminescent proteins. While fluorescent proteins and luminescence have been widely used...maturation times, and fitness cost of expression. They found that the cellular fitness cost varied greatly...plasmid that combines the most desirable features: intense color, fast maturation, and low fitness cost yet...striking visuals from fluorescent jellyfish, bioluminescent phytoplankton, and colorful corals, to name...instrument-free detection. Unlike fluorescence or luminescence, which require UV lamps, fluorometers, or luminometers...3: pTOX plasmids expressing amilCP and tsPurple genes. Image: Lazarus et al., 2019. One such lab is...

...the plant hormones strigolactones By Fabienne Furt Current methods used to detect strigolactones (SLs) are...editing in organoid Biosensors for detecting strigolactones The CRISPR Corner New ready-to-use viral preps...et al. 2021. The Organoid EasyTag workflow combines thoughtfully designed plasmid components with ...investigating genetic mechanisms related to morphogenesis, cell fate specification, and human disease....library from Alec Kimmelman targets mouse metabolic genes with ~6 gRNAs per gene.  CRISPR-Act3.0, developed...from Xiaole Shirley Liu's lab targets all mouse genes with 10 gRNAs per gene. The guides are optimized...

...inhibit, activate, or knockout many genes at a time to identify ‘hits’ - genes that affect disease progression...progression or onset. These hits can reveal individual genes or sometimes even genetic pathways that are worth...exist a drug which targets some of the candidate genes! Disease model generation CRISPR has made the generation...both individual and combinatorial drugs on for effectiveness prior to patient treatment. Target validation... revolutionized the generation of knockout cell lines which has made this control step extremely accessible...your drug(s). If a drug is equally toxic to both lines, it probably has either high toxicity or high off...and Resources References Fellmann, C., et al., Cornerstones of CRISPR-Cas in drug development and therapy...

...neurotransmission. But with approximately 950 different human genes encoding GPCRs (Takeda S et al., 2002) and many ...can be measured using a technique known as Bioluminescence Resonance Energy Transfer (BRET). BRET is similar...BRET is that the energy transfer is between a luminescent donor and a fluorescent acceptor. TRUPATH uses...measures heterotrimeric G protein dissociation by bioluminescence resonance energy transfer 2, or BRET2. With... constructs. Cells are then treated with the luminescent enzyme substrate coelenterazine, followed by ...endogenous ligand or drug. In the inactive state, the luminescent chimeric protein Gα-Rluc8 and Gγ-GFP2 will be...transducerome on a single GPCR, showing the effectiveness of using TRUPATH as a screening technique. Lastly...

...deletion of one or several of these genes permits the expression of genes farther downstream in the construct...Brainbow uses a Cre/lox system to label neurons. Genes encoding the fluorescent proteins are organized ...developed, which differ in the number, stability, and brightness of the fluorescent proteins used in the system... which uses Cre to trigger the inversion of two genes aligned head-to-head. Another variation, Brainbow... to trigger the inversion of two tandem sets of genes aligned head-to-head and the deletion of one of ...located directly upstream of the fluorescent protein genes, Cre recombination is required before fluorescence...brainbow,” is a collection of transgenic zebrafish lines that allow for multicolor labeling of an entire ...

...during and after embryogenesis. Addgene has over 600 plasmids that contain Xenopus genes and a tool-kit ... concluded that nearly all disease-linked human genes have counterparts in the rat (Gibbs, et al., 2004...collection of plasmids containing Rattus norvegicus genes! Mexican axolotl (Ambystoma mexicanum) Ambystoma...entire axolotl genome, revealing an abundance of genes related to limb regeneration (Vieira et al., 2019...for use in CRISPR and Tol2 transposase induced transgenesis.  Xenopus Xenopus, or frogs, are one of the ... for scientists to study human disease-relevant genes in such a controlled environment displays how essential...molecular tools, such as gene manipulation and mutagenesis techniques, are available to the scientific community...

...the location of genes. With this knowledge, researchers were able to target specific genes for deletion ... at Harvard University. Just as computers, cell phones, and cars become more technologically advanced ...fluorescently labeled probes. Colorimetric and luminescence based detection methods are also commonly used...ddNTP, and then run these reactions out in separate lanes of a gel. Since the sequencing gel will separate...nucleotides were replaced with fluorescently labeled ones allowing for fluorometric-based detection. This ...generally considered first generation DNA sequencing machines (9). Today, similar technologies, sometimes referred...make techniques used to generate transgenic mouse lines, such as BAC transgenic or traditional knockins/...

... our purposes? In search of simple biological machines R bodies can repeatedly extend and contract...using R bodies: simple, force-generating protein machines that can extend and retract over many microns ...with proteins and remain functional, 2) break membranes outside of their natural context or 3) be modified...demonstrates that R bodies can function to break membranes of different organisms. And finally, we demonstrated...demonstrated that R bodies can be “tuned” with mutagenesis to extend at different pH values. Using a screen...in a particular region of the R-body. Further mutatgenesis of this region produced R-bodies that could ...could use them to lyse cells (and surrounding membranes) in keeping with their natural function (see below...

... disease, cholesterol gallstone disease, senescent illnesses, and the metabolic syndrome. Coregulators...functional groups of genes involved in the execution of a specific regulatory regime (such as genes involved in...ligand-dependent sensors for a diverse set of fat-soluble hormones, vitamins, and dietary lipids. Included in this...remain unknown. Together, NRs govern expression of genes involved in a broad range of reproductive, developmental...For example, the phosphorylation status of SRC-3 defines its association with other members of the complex...as in important physiological states such as adipogenesis and macrophage activation. Our mass spectrometry-affinity...

...2014). Microbial rhodopsins are encoded by opsin genes, and include bacteriorhodopsins, halorhodopsins,...control the flow of electric charges across cell membranes and maintain membrane potential in response to...light-sensitive, so the selective expression of opsin genes in targeted cells makes it possible to control neuronal..., 2014). This could be overcome by fusing opsin genes to cell-type specific promoters; however, those ...those usually drive weak expression of downstream genes. Strong cell-specific promoters, on the other side... circuitry behind the mechanisms of sleep and anesthesia. In Cre transgenic mice, they targeted the dopamine... previously subjected to steady-state general anesthesia (Taylor et al., 2016). These very same neurons...

.... These could be genes, specific polymorphisms, including antibiotic resistance genes. This approach successfully...Genome editing tools for bacteria CRMAGE system combines CRISPR and recombineering-based MAGE The Nielsen...CRMAGE system is a fast, multiplexable method that combines CRISPR and recombineering-based MAGE (Multiplex...Yang’s lab describes a two-plasmid system that combines recombineering with CRISPR to create a system ...effectively silenced transcription of one or more genes in E. coli. and in a mammalian cell line (Qi et ... repressed or activated transcription of select genes in E. coli. Furthermore, to demonstrate wider applicability... the Husson lab used CRISPRi to study essential genes in M. tuberculosis. dCas9 and a gRNA are expressed...

... AdVs are stripped of regulatory genes E1 and E3. Without these genes, AdVs cannot replicate on their ...produced at high titers, can accommodate large transgenes, transduce quiescent and dividing cells, and ..., or high-capacity (HC-Ad__ are devoid of viral genes and therefore can accommodate up to 36 kb. Gutless...can be produced in E1-containing mammalian cell lines such as HEK293 cells. 1st generation AdV cloning...immunogenicity. In addition to E1/E3, non-structural genes E2 and E4 are deleted in 2nd generation AdVs, thereby...cloned) and pAdEasy™ which contains the adenoviral genes necessary for virus production. For detailed instructions...therapies in the new era of personalized medicine." Genes & diseases 4.2 (2017): 43-63. PubMed PMID: 28944281...

... and bleed dates and even clonal hybridoma cell lines can produce more than one mAb (Bradbury et al., ...Hybridomas can lose gene expression of the mAb-encoding genes or fail to revive after cryopreservation (Bradbury...antibodies that are generated in vitro using synthetic genes that are typically expressed from a plasmid or from... integrated sequence in a stable cell line. The genes encode the heavy chain and light chain for the antibody...Figure 2: (Left) The light chain and heavy chain genes of the antibody are encoded in a plasmid. (Right...better and better at identifying and cloning the genes for antibody expression. If starting from a protein...sequences of the antibodies and then synthesize the genes that encode those amino acids (Tran et al., 2016...

...Specially constructed plasmids can be used to replace genes in yeast, mice, or Drosophila through homologous...techniques and the plasmids used to inactivate specific genes in mammalian cells. Despite the popularity of CRISPR-based... Neomycin, puromycin, and hygromycin resistance genes are commonly used for positive selection. While ...methods have been used to create many knockout cell lines and animal models, their efficiency is very low,...easier to use and are more efficient at inactivating genes. CRISPR can target a genomic sequence and create...perfected, the production of cells and mouse knockout lines should increase. New genome engineering tools also...have tools for creating knockout animals or cell lines, please consider sharing them by depositing with...