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Showing: 1 - 20 of 324 results
  1. Advice on Career Paths and the Green Card Process for International Researchers and Entrepreneurs

    Type
    Blog Post
    Published
    Dec. 20, 2017, 2:33 p.m.
    ... both substantial merit and national importance; (2) The foreign national must be well positioned to advance...outstanding achievements in your specific academic field, (2) that you have three 3 years of research experience..., Casseus Law suggests a mix of experts including 2 dependents –people who have worked with you i.e. your... issues.  The permanent residence “green card” process is a necessary and often overlooked part of career...start planning for your visa and or green card process well before addressing your career alternatives... benefit from the applicant thinking about the process early, keeping good records, and planning for the...organizations do not have the April 1 H-1B queue process or quota like industry, these organizations can...
  2. An Introduction to Adenovirus

    Type
    Blog Post
    Published
    Oct. 3, 2023, 1:15 p.m.
    ...either SARS-CoV-2, Adenovirus type 41 (AdV-41), or Adenovirus-Associated Virus type 2 (AAV2) – or some... gene expression: Implications for gene therapy. Proc Natl Acad Sci U S A, 95(19), 11377. https://doi....Undergoing Spontaneous Degeneration in Tissue Culture. Proc Soc Exp Biol Med. 84(3), 570–573. https://doi.org... was either 1) a physiological effect of SARS-CoV-2 toward destabilizing one’s natural immune response...response to Adenovirus (and/or to its partner, AAV) or 2) a sociological effect of the COVID-19 lockdowns causing...… Chiu, C. Y. (2023). Adeno-associated virus type 2 in US children with acute severe hepatitis. Nature...encode proteins essential to initiating the whole process – such as the viral DNA polymerase – it makes sense...
  3. Advanced Uses of Cre-lox and Flp-FRT - A Neuroscientist’s View

    Type
    Blog Post
    Published
    Oct. 19, 2017, 1:54 p.m.
    ... “Ligand-Regulated Site-Specific Recombination.” Proc. Natl. Acad. Sci. USA 92(June): 5940–44. PubMed ...Using a Ligand-Dependent Chimeric Cre Recombinase.” Proc Natl Acad Sci U S A 92(15): 6991–95. PubMed PMID...FLP and Cre for additional control   Figure 2: Expression of a morphological marker (eYFP) and synaptic...Sternson. 2008. “A FLEX Switch Targets Channelrhodopsin-2 to Multiple Cell Types for Imaging and Long-Range ...PMID: 18614669. PubMed Central PMCID: PMC2593125. 2. Buchholz, F, P O Angrand, and A. Francis Stewart....The FLP Recombinase of the Saccharomyces Cerevisiae 2 Micron Plasmid Attaches Covalently to DNA via a Phosphotyrosyl...
  4. Cre-ating New Methods for Site-specific Recombination in Drosophila

    Type
    Blog Post
    Published
    May 12, 2015, 1:32 p.m.
    ...genomes. Nern A, Pfeiffer BD, Svoboda K, Rubin GM. Proc Natl Acad Sci USA. 2011 Aug 23;108(34):14198-203...Allak B, van Drunen E, Kanaar R, Berns A, Jonkers J. Proc Natl Acad Sci USA. 2001 Jul 31; 98(16): 9209–9214...CHO) cells, as well as in cortical neurons in layer 2/3 of the mouse brain. Rubin’s work shows that the ...
  5. Plasmids 101: TOPO Cloning

    Type
    Blog Post
    Published
    Oct. 27, 2016, 2:30 p.m.
    ...topoisomerase I in Escherichia coli is sequence specific."  Proc Natl Acad Sci U S A.  1991 Nov 15;88(22):10104-8... the two DNA strands and releasing topoisomerase (2).  These days commercially available TOPO kits provide...Taq polymerase using your favorite PCR protocol.  2. Set Up TOPO Cloning Reaction: Mix together the PCR...PubMed PMID: 1658796. PubMed Central PMCID: PMC52876. 2. Novel approach to molecular cloning and polynucleotide...restriction enzymes or ligase, and requires no post-PCR procedures. Sounds easy right? The technique relies on the...insert, the magic of TOPO cloning happens. Basic procedure Let’s break down the steps needed for TOPO cloning... everything you need for the next step before proceeding. Pre-warming your antibiotic-containing plate...
  6. CRISPRainbow and Genome Visualization

    Type
    Blog Post
    Published
    Feb. 28, 2017, 3:30 p.m.
    ...Addgene. 2. Ma, Hanhui, et al. “Multicolor CRISPR labeling of chromosomal loci in human cells.” Proc. Natl...two genes over time, at a range of distances from 2-75 Mbp. Labeling multiple, intrachromosomal loci Building...successfully resolved loci with physical map distances of 2 and 75 Mbp, with the calculated fluorescent distances...established physical map. In comparing pairs of targets ~2 Mbp apart, they noticed that they could evaluate the...
  7. Mapping the 4D nucleome with CRISPR/Cas9

    Type
    Blog Post
    Published
    Aug. 11, 2015, 2:30 p.m.
    ...Reyes-Gutierrez P, Wolfe SA, Zhang S, Pederson T. Proc Natl Acad Sci U S A. 2015 Mar 10;112(10):3002-7....resolved loci with physical map distances of 75 and 2 Mbp, with the calculated fluorescent distances correlating...established physical map. In comparing pairs of targets ~2 Mbp apart, they noticed that they could evaluate the...
  8. Starter Guide to induced Pluripotent Stem Cells (iPSCs) Part 2:  Reprogramming and Transdifferentiation

    Type
    Blog Post
    Published
    Nov. 6, 2018, 1:12 p.m.
    ...) by temperature-sensitive Sendai virus vectors. Proc Natl Acad Sci U S A, 2011. 108(34): p. 14234-9. ... temporal modulation of canonical Wnt signaling. Proc Natl Acad Sci U S A, 2012. 109(27): p. E1848-57....revert back to a pluripotent stage (iPSC formation) [2, 3]. The iPSCs then proliferate and redifferentiate... more common delivery methods include retrovirus [2], lentivirus [4], adenovirus [5], Sendai virus [6]...2006. 441(7097): p. 1061-7. PubMed PMID: 16810240. 2. Takahashi, K., et al., Induction of pluripotent stem... Pluripotent Stem Cells. Cell Stem Cell, 2015. 17(2): p. 178-94. PubMed PMID: 26189426. 15. Si-Tayeb, ...induced pluripotent stem cells. Stem Cell Rev, 2015. 11(2): p. 242-53. PubMed PMID: 25578634. PubMed Central...
  9. CRISPR Antimicrobials

    Type
    Blog Post
    Published
    May 3, 2016, 2:30 p.m.
    ...sensitize and kill antibiotic-resistant bacteria.” Proc Natl Acad Sci U S A. 9;112(23):7267-72. (2015). ...Citorik Plasmids here). In both cases, they used 1-2 CRISPR crRNAs targeting sequences found only in certain...resensitize antibiotic-resistant bacteria (Figure 2). The first phage introduced is lysogenic, integrating...machinery targeting 1) the given resistance gene and 2) a second lytic phage. Bacteria that receive this ...237163. Find plasmids from this paper at Addgene. 2. Bikard, David, et al. “Exploiting CRISPR-Cas nucleases...Most antibiotics target one of three essential processes: cell wall synthesis, DNA replication, or protein...protein synthesis. Because they target such generic processes, antibiotics don’t just affect the bacteria causing...
  10. Plasmids 101: Repressible Promoters

    Type
    Blog Post
    Published
    Dec. 20, 2022, 2:15 p.m.
    ...mammalian cells by tetracycline-responsive promoters. Proc Natl Acad Sci U S A. 1992 Jun 15;89(12):5547-51.... hybrid derived from the trp and lac promoters.” Proc Natl Acad Sci U S A. 80(1) (1983): 21-5. PubMed ...immediate early gene expression. Genes Dev. 1988 Jun;2(6):718-29. doi: 10.1101/gad.2.6.718. PMID: 2843425...Targeted Gene Expression in Drosophila.” Genetics 186(2) (2010): 735-55. PubMed PMID: 20697123. PubMed Central... in Saccharomyces cerevisiae.” FEMS Yeast Res. 12(2) (2012): 197-214. PubMed PMID: 22129153. Additional...over the TetO elements, allowing transcription to proceed (pJKR-H-tetR from the Church lab uses this system...Response Element (TRE)), allowing transcription to proceed. When tetracycline or one of its derivatives is...
  11. PiggyBac-ing Through the Genome Editing Field

    Type
    Blog Post
    Published
    May 31, 2016, 3:30 p.m.
    ...piggyBac transposase tools for genome engineering.,” Proc. Natl. Acad. Sci. U. S. A., vol. 110, no. 25, pp...provides a simple tool for conditional cell ablation.,” Proc. Natl. Acad. Sci. U. S. A., vol. 105, no. 38, pp...without leaving behind any accessory DNA sequences [2], [3]. Simply put, the piggyBac™ transposon containing...with a Footprint-Free™ genome edit.   Figure 2: Editing DNA using the piggyBac™ transposon selection...PMID: 26211958. PubMed Central PMCID: PMC4663986. 2.  A. M. Singh, V. V Adjan Steffey, T. Yeshi, and D...to transfect, select, and isolate clones. This procedure is cumbersome and inefficient, as it relies on...incorporated, and used during the differentiation process. Moreover, a splinkerette-PCR assay may be used...
  12. Fluorescent Proteins 101: Aptamer Fluorophores

    Type
    Blog Post
    Published
    April 11, 2017, 2:30 p.m.
    ...CRISPR labeling of chromosomal loci in human cells.” Proc. Natl. Acad. Sci. USA 112(10) (2015): 3002-7. PubMed... to DFHBI in the presence of that metabolite (Fig.2). Spinach eventually evolved into Spinach2, a more...PMID: 25713381. PubMed Central PMCID: PMC4364232. 2. Baker, Monya. “RNA imaging in situ”. Nature Methods...emerging environmental pollutants.” Front Chem. 2014; 2: 41. PubMed PMID: 25019067. PubMed Central PMCID: ...biosensors.” TrAC Trends in Analytical Chemistry 27(2):108-117 · February 2008. 11. Svensen, Nina and Jaffrey...Filonov, Gregory S., et al. “In-gel imaging of RNA processing using broccoli reveals optimal aptamer expression...Aptamer-based assay for prion diseases diagnostic”. Procedia Environmental Sciences. Volume 12, Part B, 2012...
  13. Synthetic promoter AAVs for cell-type specific expression in retinal cells

    Type
    Blog Post
    Published
    March 12, 2020, 1:15 p.m.
    ...expression and high cell-type specificity.  Strategy #3 (ProC): Create promoters by repeating mouse cell type ...retinal cell-type specific genes from mice. Strategy #2 (ProB): Create promoters using phylogenetically conserved...would express Cre-mCherry and GFP.   Figure 2: Synthetic promoters can be paired for targeted expression...1345-1356. https://doi.org/10.1038/s41593-019-0431-2  Neff, E.P. An AAV library for retinal cell expression...
  14. Plasmids 101: Dimers and Multimers

    Type
    Blog Post
    Published
    Jan. 10, 2023, 2:15 p.m.
    ...identification.   Fig. 2: Gel image of Plasmid 61564: pBAMD1-2 (~4.7 kb) digested with SpeI and... higher multiple circular DNA forms in bacteria. Proc Natl Acad Sci U S A. 1968 Dec;61(4):1406-13. doi... at ~3.6 kb and ~1.1 kb (lane 3). Uncut DNA (lane 2) has a band at <3 kb, which corresponds to the supercoiled...formation of plasmid multimers. Cell. 1976 Dec;9(4 PT 2):707-16. doi: 10.1016/0092-8674(76)90134-3. PMID: ...dimers in Escherichia coli K-12. Plasmid. 1989 Mar;21(2):138-41. doi: 10.1016/0147-619x(89)90057-7. PMID: ...Plasmids and Chromosomes. Microbiol Spectr. 2014 Oct;2(5). doi: 10.1128/microbiolspec.PLAS-0025-2014. PMID...Behavior of Plasmid DNA. Microbiol Spectr. 2015 Apr;3(2):10.1128/microbiolspec.PLAS-0036-2014. doi: 10.1128...
  15. A Practical Guide to Optimizing AAV DIO and FLEx Vector Expression

    Type
    Blog Post
    Published
    Nov. 2, 2021, 1:15 p.m.
    ...mitigation with cross-over insensitive ATG-out vectors. Proc Natl Acad Sci USA 116:27001–27010. https://doi.org...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...
  16. Plasmids 101: Degron Tags

    Type
    Blog Post
    Published
    March 14, 2024, 1:15 p.m.
    ...complete degradation of proteins in mammalian cells. Proc Natl Acad Sci U S A. 2012 Dec 4;109(49):E3350-7....required components are 1) a SMASh-tagged protein and 2) asunaprevir (small molecule). dTAG The degradation...gone through an additional round of evolution (AID-2) to reduce some of the leakiness associated with the...
  17. INTEGRATE: Bacterial Genome Engineering Using CRISPR-Transposons

    Type
    Blog Post
    Published
    Dec. 7, 2020, 2:53 p.m.
    ...Recruitment of CRISPR-Cas systems by Tn7-like transposons. Proc Natl Acad Sci USA 114:E7358–E7366 . https://doi....et al., 2020). Genomic targets require an upstream 2-bp PAM sequence for recognition by QCascade; although...cells of the plasmid after integration. Figure 2: (A) Streamlined VchINT expression constructs. (B)...genomic target site bound by QCascade (Fig. 1B). The process also creates a 5-bp target-site duplication (TSD...
  18. Tips for Screening with Yeast Two Hybrid Systems

    Type
    Blog Post
    Published
    Oct. 22, 2015, 2:30 p.m.
    ...systematic studies of membrane protein interactions. Proc Natl Acad Sci U S A. 2004; 101(33):12242–12247. ...retain their individual activities when separated (2), and that DBD and TAs from different systems could... Enzymol. 1983;100:293-308. PubMed PMID: 6312261. 2. Keegan, L., Gill, G., and Ptashne, M. Separation ...
  19. K. phaffii: Rising to the Occasion

    Type
    Blog Post
    Published
    April 4, 2023, 1 p.m.
    ...genomics of biotechnologically important yeasts. Proc. Natl. Acad. Sci., 113, 9882-9887. DOI: 10.1073/...work with Grows extremely fast (doubling time of ~ 2 hours) Amenable to genetic manipulation The first...
Showing: 1 - 20 of 324 results