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We narrowed to 464 results for: mal.2

Showing: 101 - 120 of 464 results
  1. AAVs in Retinal Gene Therapy

    Type
    Blog Post
    Published
    July 31, 2018, 12:55 p.m.
    ...therapy had fallen - plummeted really -  from grace 2 years prior with the death of Jesse Gelsinger in an... the whole field to a grinding stop and only now, 2 decades later, is it finally back in the limelight...the other hand, have broad tropism in the eye. AAV-2, the first identified serotype and the one used in...reading 1. FDA approves gene therapy for blindness 2. Gene Therapy emerges from disgrace to be the next..., including the RPE65 gene responsible for an autosomal recessive, severe, childhood-onset form of blindness...cloning of the RPE65 gene, a naturally occurring animal model, the RPE65−/− dog, was characterized and ...expression in non-dividing cells because they remain in episomal form in the cell’s nucleus. But since nothing...
  2. Hot Plasmids: Spring 2025

    Type
    Blog Post
    Published
    June 3, 2025, 1:15 p.m.
    ...cell-attached recordings in primary visual cortex (V1) layer 2/3 (L2/3). B) Fluorescence from axonal boutons of neurons... generation and stable cell line creation (Figure 2). Looking for more? Explore our empty and EGFP retroviral...Lentiviral backbone plasmids here! Figure 2: Addgene cloned EGFP into pAG Lenti CMV N-HA Puro ...Glypicans are proteoglycans composed of a protein core, 2–4 glycosaminoglycans (GAG), and are (typically) tethered...either the optogenetic activator channelrhodopsin-2 or fluorescent reporter dTomato under the control ...but it is challenging to monitor because only a small number of glutamate molecules are released in each...CMV promoter drives robust gene expression in mammalian cells. Flexible tagging: Choose untagged or add...
  3. CRISPR 101: Making a Knock-In Cell Line

    Type
    Blog Post
    Published
    Dec. 22, 2022, 2:15 p.m.
    ...suggestions. Disable the other repair mechanisms Mammalian cells have 2 primary repair mechanisms besides HR - ... However, if you have a larger knock-in (200 bp – 2 kb), a dsDNA donor will need to be used due to synthesis...accidentally change your protein of interest.   Fig. 2: Stop re-cutting with PAM and guide RNA disrupting.... Com., 8(2024), (2017). 10.1038/s41467-017-01836-2 Charpentier, M., Khedher, A. H. Y., Menerot, S., Brion...dominant homology-directed repair (HDR) pathway in mammalian cells, but a less frequent DNA repair mechanism... HDR events compete with NHEJ-mediated edits of small insertions and deletions.   Start your knock-in...advances in CRISPR/Cas9-mediated knock-ins in mammalian cells. J Biotechnol., 16(4): 387-390 (2020). 10.1016...
  4. DNA Purification Without a Kit

    Type
    Blog Post
    Published
    Feb. 11, 2020, 2:15 p.m.
    ...alkaline lysis plasmid miniprep Starting material: 2 mL bacterial culture Product: plasmid DNA This kit-free...protocol: 1) it solubilizes both DNA and agarose, and 2) it helps DNA stick to the glass. After binding DNA... had a similar level of sensitivity. Figure 2: Steps to purify DNA using a cellulose dipstick. Image...Academy of Sciences of the United States of America, 76 2, 615-9 . https://doi.org/10.1073/pnas.76.2.615  Zhou... columns, it’s bound to glass syringe filters. Normally DNA does not bind silica or glass, but the addition... Starting material: plant, microbe, blood, or mammalian cells or tissue Product: total nucleic acids While...purify DNA and RNA from plants, microbes, blood or mammalian cells in 30 seconds or less without using a pipette...
  5. Addgene is Expanding Our Viral Vector Service!

    Type
    Blog Post
    Published
    Oct. 15, 2024, 1:15 p.m.
    ...Request review: 1–2 days Prep and QC completed: 6–8 weeks Average shipping time: 1–2 days (USA); 3–4 days... our production process. This process will take 1–2 days, and we anticipate approving the vast majority...be available for Packaged on Request service. A small subset of AAV plasmids will have technical or legal...
  6. Tips for a 1st time AAV user (by a Rookie AAV user)

    Type
    Blog Post
    Published
    Oct. 23, 2018, 11:49 a.m.
    ...then packaged into AAV’s protein shell, or capsid; 2) the pHelper plasmid which expresses adenovirus genes...takes ~3 hours to complete: 1 hours hands-on time and 2 hours for the qPCR run and data analysis. Refer to...quantification of adeno-associated virus serotype 2-derived inverted terminal repeat sequences. Human ...therapy methods, 23 1, 18-28. PubMed PMID: 22428977. 2. Choi, V.W., Asokan, A., Haberman, R.A., & Samulski...buffer exchanged virus, remember to make one or two small aliquots to use for qPCR titering. This helps avoid...multiplicity of infections (MOIs), to determine the optimal dose of AAV for my cells of interest. Every batch...makes AAV a versatile tool for gene expression in mammals Use the PEI calculator for planning AAV packaging...
  7. Light Sheet Fluorescence Microscopy

    Type
    Blog Post
    Published
    July 16, 2015, 2:30 p.m.
    ...Carballosa, et al, (2015) eNeuro, March/April 2015, 2(2) e0001-15.2015. Pubmed. Resources: http://openspim.org...orthogonal-plane fluorescence optical sectioning (OPFOS) (2). Arne Voie, David Burns and Francis Spelman focused...in LSFM. In LSFM the laser light sheet, typically 2-6  microns, illuminates only one thin plane of the...can be used with 3DISCO to image non-transgenic animals such as rats (17).  In addition, the use of viruses...over labeling methods as compared to transgenic animals (17).  These viral plasmids are available through...relationship of the central nervous system under normal and diseased conditions.  Thank you to our guest...
  8. Plasmids 101: Gateway Cloning

    Type
    Blog Post
    Published
    Jan. 12, 2017, 3:30 p.m.
    ...is excised from the donor vector.   Figure 2: The Gateway system adopts phage integration into ...our website to search for your favorite gene! STEP 2: Generate an Expression Clone When making the expression...expression construct in only 1 day, as opposed to 2+ days with traditional restriction and ligation cloning...Clon Transgen 4:138. doi:10.4172/2168-9849.1000138 2. Hartley JL. Use of the Gateway System for Protein...lentiviral expression of the human KRAS gene in mammalian cells. STEP 1: Generate an Entry Clone There are...expression level, and experimental purpose. For mammalian lentiviral expression, we could use a vector like...and is available for all kind of organisms from mammals to E. coli. Glossary of Gateway cloning vectors...
  9. A Practical Guide to Optimizing AAV DIO and FLEx Vector Expression

    Type
    Blog Post
    Published
    Nov. 2, 2021, 1:15 p.m.
    ...one of lox2272 sites will now be sandwiched between 2 loxp sites and is excised by Cre (Figure 1). This ...flank the transgenes (non-homologous pairs) (Figure 2.). They found that almost all off-target expression...exercise caution when using them.    Figure 2. Schematic diagram showing the mechanism of spontaneous... Tropism and Axonal Transport of AAV Serotypes 1, 2, 5, 6, 8 and 9 in the Mouse Brain. PLoS ONE 8:e76310... Pseudotyped with Viral Capsids from Serotypes 1, 2, and 5 Display Differential Efficiency and Cell Tropism... with in vivo experiments to determine the optimal/minimal injection titer and volume needed to achieve... now be able to make smaller adjustments to a set of injections into your animal model. For example, in...
  10. Crowdfight, a Platform to Boost Scientific Collaboration During COVID-19 and Beyond

    Type
    Blog Post
    Published
    June 1, 2021, 1:15 p.m.
    ...antibodies from an Andean mammal called alpaca could neutralize the SARS-CoV-2 virus. But while the early...receiving dozens of requests every day.    Figure 2: When a researcher needs a collaborator for a specific...Crowdfight will: 1) Find an expert with the right skill; 2) Confirm the expert’s suitability and availability...In the example above, for example, we fostered a formal scientific collaboration between two research groups...transient partnerships where a researcher makes a small but crucial contribution to someone else’s project...find the right expert and the lack of credit for small contributions. We strive to eliminate these two ...
  11. Optimizing Donor DNA for Enhanced CRISPR Genome Editing

    Type
    Blog Post
    Published
    March 24, 2016, 2:30 p.m.
    ...mechanism of action are presented in Figure 2. Figure 2: Single-stranded donor DNA interaction with...Nature biotechnology (2016). PubMed PMID: 26789497.  2. Lin, Steven, et al. "Enhanced homology-directed human...PAM-distal side of the break and 91bp on the PAM-proximal side, consistently supported higher frequencies...attained without any of the error-prone repair that normally accompanies Cas9 cutting. We still don’t know ...
  12. Important Considerations in Optogenetics Behavioral Experiments

    Type
    Blog Post
    Published
    Oct. 1, 2015, 2:30 p.m.
    ...of “reward”), then the animal will repeatedly nose-poke at the active hole [1, 2].    Place preference/...spend most of its times in the opposite chamber) [2]. Laser activation is usually controlled automatically...two different ways 1) your hypothesis is wrong or 2) there is some problem with the technical implementation...PMID: 21716290. Pubmed Central PMCID: PMC3775282. 2. McDevitt, Ross A., et al. "Serotonergic versus nonserotonergic...approximation of reward or the sense of pleasure that the animal perceives through taking a drug. The ideal behaviors...distinguished visually through different patterns and the animal only receives stimulation in one of the two chambers... image below). If a circuit is reinforcing, the animal will prefer to spend most of its time in the chamber...
  13. Optogenetics + CRISPR, Using Light to Control Genome Editing

    Type
    Blog Post
    Published
    Sept. 3, 2020, 12:15 p.m.
    ...the light-inducible heterodimerizing cryptochrome 2 (CRY2) and calcium and integrin-binding protein 1 ...inactive, dead Cas9 protein (dCas9) fused to CIB1; and 2) the activator - the CRY2 photolyase homology region... fused to both the N- and C-termini of dCas9; and 2) CRY2FL-VP64, a fusion of full-length CRY2 and the...researchers saw an 11-fold increase in mRNA levels after 2 hr and a 400-fold increase after 30 hr. The system...authors fragmented Cas9 into N-terminal (residues 2-713, N713) and C-terminal (residues 714-1368, C714...nMagC714 instead of nMagHigh1-C714, generating paCas9-2. This change did not significantly alter the system...prior work, the Sato lab also showed that the paCas9-2 system could be spatially controlled and reversibly...
  14. Antibodies 101: ChIP

    Type
    Blog Post
    Published
    March 10, 2022, 3:25 p.m.
    ...reserve a small aliquot, split into two parts to (1) run a DNA gel to confirm fragment size and (2)  incubate...proteins of interest to any DNA they were bound to (2) fragmented the DNA (3) used antibodies to specifically...adjustments, to get everything just right!  Fig. 2: Goldilocks is actually celebrating a successful ChIP...therefore will require crosslinking, which uses formaldehyde or UV light to create strong but reversible ...Fragmenting  The next step is break the DNA into random, small pieces of roughly equal size, typically between ...
  15. Simplify Cloning with in vivo Assembly

    Type
    Blog Post
    Published
    Oct. 18, 2018, 12:37 p.m.
    ...procedure to be performed using a simple two-step, 2 hr protocol prior to transformation (Figure 1). As...Primer design Using specific primer design (Figure 2), IVA cloning can be used to perform any plasmid modification... for each type of modification is shown in Figure 2, and is discussed in more detail below. The main requirement...Biotechniques 10.1 (1991): 62-66. PubMed PMID: 2003926. 2. Bubeck, Peter, Monica Winkler, and Wilfried Bautsch...higher Tm give more efficient recombination. We normally use a Tm between 47-55 °C for the homologous region...be very helpful to confirm primer design.  Use minimal template DNA Use 1 ng of PCR template DNA to minimize...
  16. Negative Can Be Positive: Open AAV Data with Addgene

    Type
    Blog Post
    Published
    Sept. 6, 2022, 1:15 p.m.
    ...indicated they wanted to see more negative data (Figure 2.) At the same time, when scientists who support open...is not only housed, but encouraged.    Fig. 2: Results from a survey conducted by Addgene in 2021...detailed methods and image descriptions, a minimum n = 2, and well labeled high- and low-magnification images...gene therapy trials. Human Gene Therapy Methods, 26(2), 71–76. https://doi.org/10.1089/hgtb.2015.040 Initiative...specifically to allow scientists to evaluate how small changes in vector administration can influence AAV...doi.org/10.1089/hgtb.2019.105 Rumachik, N. G., Malaker, S. A., Poweleit, N., Maynard, L. H., Adams, C....
  17. Viral Production at Addgene

    Type
    Blog Post
    Published
    Oct. 24, 2023, 1:15 p.m.
    ...digital PCR. Human Gene Therapy Methods, 25(2), Article 2. https://doi.org/10.1089/hgtb.2013.131 Wang,...(see maps section for images).     Figure 2: AAV Pro cells were transduced with either pAAV-Ef1a-mCherry-IRES-Cre...Digital PCR Method. Human Gene Therapy Methods, 29(2), 96–103. https://doi.org/10.1089/hgtb.2017.198   ...properties of the final product, particularly in large animal studies. Endotoxin contamination is minimized by...MRP 30 kDa subunit (RPP30) as a control for normalization purposes are being used. Quality Control Mycoplasma...
  18. Mouse Modeling, Part 2: Breeding and Crossing Mice

    Type
    Blog Post
    Published
    Aug. 6, 2019, 12:55 p.m.
    ...detect your targeting vector or gene of interest. 2. Breed your parental mice to generate F1 Once you’...in your offspring. Genotyping involves getting a small piece of tissue from each mouse (typically via either...
  19. Hot Plasmids: Fall 2025

    Type
    Blog Post
    Published
    Nov. 11, 2025, 2:14 p.m.
    ...Biotechnology, 10.1038/s41587-024-02551-2. https://doi.org/10.1038/s41587-024-02551-2    Knocking-down barriers ...recipient cells from red to green fluorescence (Figure 2). Donor cells express iCre with a mitochondrial anchor...DsRed-STOP to trigger expression of EGFP. Figure 2: Schematic of the MitoTRACER system. NLS = nuclear...), 6563. https://doi.org/10.1038/s41467-024-50767-2     ...biomolecular condensate in human cells — causes a rare malformation syndrome (Mensah & Niskanen et al., 2023). Now...oxygen consumption and upregulating other genes normally expressed in BAT. When donor-derived CRISPRa-AAV-treated...
  20. RNA Interference in Plant Biology: New Tools for an Old Favorite

    Type
    Blog Post
    Published
    Oct. 27, 2020, 1:15 p.m.
    ... analogs such as 2-fluoroadenine (2-FA), organisms with functional APT will convert 2-FA to cytotoxic ...selection of plants undergoing RNAi, and LIIbeta F 1-2 RNAi, which allows assembly of intron-spliced hpRNAs...nucleotides, resulting in death. In the presence of 2-FA, potent gene silencing of APT is required for survival...trigger in the mammalian research community. Fortunately, many tools for shRNA in mammals are available...enzymes are involved in the biogenesis of different small RNAs (Figure 1). These siRNAs can exert their gene...posts Resources on Addgene.org Find tools for mammalian RNAi Browse all plasmids for RNAi Check out Addgene's...
Showing: 101 - 120 of 464 results