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Addgene
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  1. Viral Vectors 101: Viruses as Biological Tools

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    Blog Post
    ...nature, extra safety measures, like replication incompetent viral particles, are required. We will be covering...infect both non-dividing and dividing cells. They accomplish this through nuclear localization signals which... immunodeficiency virus type 1 preintegration complexes.” Proc. Natl. Acad. Sci. U.S.A. 89 (1992) 6580...
  2. Addgene’s Viral Service - Why Virus? Why Now?

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    Blog Post
    ...service supporters We would like to thank the companies who supported this project with funding. Alnylam...donations. That seed money was used to build a completely self-supporting service so that Addgene is not...distribution, this project involved every Addgenie in the company. Our Finance, Business and Legal teams had to pave...
  3. Addgene's Tips for Plasmid Quality Control

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    Blog Post
    ...Cloner, and Snapgene), and save these to a shared computer or server. This will ensure that future members...more than two sequencing reactions. In the more complex cases, we sometimes have to design new primers ...saves us the step of purifying the DNA and gives comparable success rates and sequence quality, which is ...
  4. Hot Plasmids - March 2020 - base editors, GEVI, MoClo, and optogenetics

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    Blog Post
    ... was also between 1013 - 1014 vg/kg, a dosage comparable to those currently used in human gene therapy...fluorescent voltage indicators, however, fall short compared to GFP-based sensors in terms of response and ...precision of gene expression and reduces toxicity as compared to previous Cre/lox or drug-induced Cre systems...
  5. Plasmid Tools for Microbiome Studies

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    Blog Post
    ...validated their platform on clinical stool samples by comparison to qPCR and demonstrated that it can also detect...without fixation or preparation, and deliver CRISPR components for gene disruption or CRISPRi. While designed...bacteriophage shell protein or a bacterial microcompartment protein. The expression of this fusion is ...
  6. To Each HIS Own

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    Blog Post
    ...proteins within a system. This can be pretty complicated given that a single cell has tens of thousands...strategy a single protein can be isolated from a complex mix using affinity chromatography against an amino...then eluted using a high imidazole buffer that outcompetes the interaction between the protein of interest...
  7. CRISPR 101: Cas9 vs. The Other Cas(s)

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    Blog Post
    ...is guided by an RNA molecule, the gRNA, to a complementary site in the genome where it will proceed to ...that Cas14 also indiscriminately cleaves non-complementary ssDNA when engaged by its target sequence. Why...Cas7-11 Cas7-11 is a naturally occurring RNase composed of the fusion of several Cas7 and Cas11 domains...
  8. RNA Extraction Without A Kit

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    Blog Post
    ...or tissue collection method, so biotechnology companies have marketed several products that help to further... RNAzol®, QIAzol®  and sold by many different companies). TRIzol® is an all-in-one acid-guanidinium-phenol... is the carryover of DNA that can potentially complicate results of a downstream application such as quantitative...
  9. Channelrhodopsins with improved light sensitivity for minimally-invasive optogenetics

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    Blog Post
    ... light sensitive and have enhanced conductance compared to current channelrhodopsins. Their new channelrhodopsins...neurons do not express as many copies of the ChRs as compared to direct injection. This lower multiplicity of...better suited for systemic delivery with PHP.eB compared to the existing ChR2(H134R).  In the second experiment...
  10. Plasmids for Endogenous Gene Tagging in Human Cells

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    Blog Post
    ...get the molecular components of CRISPR/Cas9 (Cas9 protein and the crRNA-tracrRNA complex) and the donor ...destabilizes the cell’s outer membrane and allows the components to physically enter the cells so they can go ...
  11. Uncertainty about Labor Law Brings More Uncertainty to Postdoc Wages

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    Blog Post
    ... had been collecting data and documenting the compliance of universities with the FLSA in our online resource... salary raising as the only viable option for compliance. However, 10 days prior to the implementation...opportunity of the lapsed mandate (or are being compelled at the state level, in the case of some public...
  12. Gendered Innovations: Why Does Sex of the Cell Matter?

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    Blog Post
    ...Stanford University. Sex and gender are critical components of biological research that are often forgotten...cost at this early stage of research is minimal compared to that of human clinical trials. And, as Janine...studies that draw from a body of research that is incomplete (because sex was not analyzed) may harm humans...
  13. 7 Simple Strategies to Resolve Conflicts with Difficult Supervisors

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    Blog Post
    ...who are usually antagonistic and impolite, Complainers, who spend most of their time moaning about their...with negative comments (hostile-aggressives, complainers, know-it all experts, wet-blanket negativists...support from your colleagues or other supervisors to complete your work. Whether your supervisor is a negative...
  14. CRISPR in the Clinic

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    Blog Post
    ...well as the introduction of the cancer-fighting component, CAR. Clinical trials are underway to explore ... have involved turning on fetal hemoglobin to compensate for defects in the adult hemoglobin produced ...for use in the next few months. Several other companies have followed suite, with Beam Therapeutics initiating...
  15. Genome-wide Screening Using CRISPR

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    Blog Post
    ... and versatility. CRISPR/Cas9 consists of two components: the non-specific endonuclease (Cas9) and a single...any genomic locus, provided the target is unique compared to the rest of the genome and located immediately...distribution is analyzed in the drug-resistant population compared to a non-treated control group. In this scenario...
  16. Antibodies 101: Choosing the Right Isotype

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    Blog Post
    ...choosing antibodies   Complexity is a key factor Biological systems tend to be complex with a variety of ...proteins interacting. Experiments tend to be equally complex with users trying to probe multiple targets in ...
  17. Engaging with science and society at pgEd

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    Blog Post
    ...of science, even while I was a bench scientist completing my graduate studies in molecular biology and ...for the past three years. pgEd is a small team comprised of individuals from diverse backgrounds and disciplines...social context. This “general public” audience comprises the taxpayers who fund much of scientific research...
  18. Adenoviral Vector Production and Troubleshooting

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    Blog Post
    ...response against AdV. Importantly, recombination-competent adenovirus (RCA) can be generated if the E1 gene...negligible toxicity. However, their production is more complex and the presence of helper virus contaminants have...amplification.*Pro-Tip*: The cells will become completely confluent and the media will turn yellow. Do ...
Showing: 581 - 600 of 901 results