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Showing: 31 - 60 of 115 results
  1. Antibodies 101: Producing Recombinant Antibodies

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    Blog Post
    ...Mechanisms, detection, and control. Int J Pharm. 2018 Oct 25;550(1-2):251-268. doi: 10.1016/j.ijpharm.2018.08.043...materials have been washed away (Figure 1).      Figure 1: The steps of rAb production. Created ...EBNA1 Cells. Methods Mol Biol. 2018;1850:1-16. doi: 10.1007/978-1-4939-8730-6_1. PMID: 30242676. Frenzel...Neuroscience Research. Curr Protoc Neurosci. 2020 Dec;94(1):e106. doi: 10.1002/cpns.106. PMID: 33151027; PMCID...
  2. AAV Titers: Where Do They Come From And What Do They Mean?

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    Blog Post
    ...near-perfect physical-to-infectious particle ratio of 1:1 (Zeltner et al., 2010). However, for recombinant ...preparations are genome-containing (Figure 1).    Figure 1: Electron micrograph of an Addgene AAV...PCR versus analog real-time PCR. Nat Methods. 2013 Oct;10(10):1003-5. PubMed PMID: 22035192. PubMed Central...reported a physical-to-infectious particle ratio of 50:1 (Zeltner et al., 2010). The specific infectivity of... lot (if we still have it available). References 1. Fagone, Paolo, et al. "Systemic errors in quantitative... Human Gene Therapy, Part B: Methods 23.1 (2011): 1-7. PubMed PMID: 22428975. PubMed Central PMCID: PMC3640491...
  3. Overcoming the Challenges of Lentiviral Production

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    Blog Post
    ...limit of lentiviral vectors. Hum Gene Ther. 2001 Oct 10;12(15):1893-905. PubMed PMID: 11589831. Jiang ...is best for larger genes such as Cas9. See figure 1 for an example of how changing transfection ratios...
  4. Evolution of Brainbow: Using Cre-lox for Multicolor Labeling of Neurons

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    Blog Post
    ... Rheenen J, Simons BD, Clevers H. Cell. 2010 Oct 1;143(1):134-44. PubMed. Drosophila Brainbow: a recombinase-based...the Brainbow mouse neural labeling system. Brainbow-1 and -2 have been further refined to create Brainbow...subsequent recombinations cannot occur. While the Brainbow-1 system employs Cre-mediated deletion, the design of...antibodies specific to each fluorophore. Third, Brainbow-1 and Brainbow-2 each contained a “default” state; for...dendritic processes not previously visible with Brainbow-1 and -2. The general structure of Brainbow-1.0 is retained...
  5. Adeno-associated virus (AAV) Guide

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    Guide
    ...comparison. Duan D, Yue Y, Engelhardt JF. Mol Ther. 2001 Oct;4(4):383-91. PubMed . Return to Top...the full-length transgene at very low efficiency (<1% of wild type). If either of these methods can be ...vectors pseudotyped with viral capsids from serotypes 1, 2, and 5 display differential efficiency and cell...
  6. CRISPR Activation: A Practical Guide

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    Blog Post
    ...Last updated Oct 7, 2020 by Gabrielle Clouse. This post was contributed by guest bloggers Marcelle Tuttle...activity to a transcriptional activation domain (Fig 1). Two ways to use CRISPRa for your research CRISPRa... Stucka R, Hauber J, Lange UC (2016) Targeted HIV-1 Latency Reversal Using CRISPR/Cas9-Derived Transcriptional...
  7. 22 Hot Plasmid Technologies from 2014

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    Blog Post
    ...transgenesis constructs. Kirchmaier et al., PLOS One 2013 Oct 7;8(10):e76117. Irreversible peptide-peptide ligation...9(5):1104-12. Heinemann et al., FEBS Lett 2012 Oct 19;586(20):3716-22. Park et al., Science 2011 Aug...expression. Brown et al., Genesis 2014 Jan;52(1):39-48. APEX2 for proteomic mapping and electron...engineering cells that lack release factor one (RF-1; Bacterial strain EcAR7) and minimizing the set of... of human mitogen-activated ERK activating kinase 1 (MEK1) with either one or two phosphoserine residues...comprised of three sets of cloning vectors (Level 0, 1, or 2) which can be utilized in three successive assembly... vectors are directionally assembled into a Level 1 vector creating a single transcriptional unit (Ex:...
  8. CRISPR 101: Engineering the Plant Genome Using CRISPR/Cas9

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    Blog Post
    ...Originally published Oct 11, 2016 and last updated Dec 22, 2020 by Benoit Giquel. CRISPR has taken the...target cell line or organism (Presented in figure 1). More information on Agrobacterium-mediated transformation...mediated cloning of your gRNA of interest. Figure 1: Simplified schematic of agrobacterium-mediated transformation...
  9. Generating Mouse Models Using CRISPR/Cas9

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    Blog Post
    ...Last updated on Oct 1, 2020 by Aliyah Weinstein. This post was contributed by guest bloggers, Wenning...process check out our Mouse Modeling blog posts: Part 1: Genetically Engineered Mice and Part 2: Breeding ...
  10. Plasmids 101: Modular Cloning Applications and Kits

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    Blog Post
    ... Technologies. Cold Spring Harbor Laboratory, 27 Oct. 2023. Crossref, https://doi.org/10.1016/j.xgen.2024.100519...within the mitochondrial matrix.     Figure 1: A chart with MoClo kit recommendations for different...Traditional Biology.” ACS Synthetic Biology, vol. 5, no. 1, American Chemical Society (ACS), 4 Nov. 2015, pp...., vol. 4, no. 9, American Chemical Society (ACS), 1 May 2015, pp. 975–86. Crossref, https://doi.org/10.1021...Yeast Mitochondria.” BMC Biotechnology, vol. 17, no. 1, Springer Science and Business Media LLC, 13 Nov. ...Editing in Plants.” BMC Plant Biology, vol. 20, no. 1, Springer Science and Business Media LLC, 23 Apr. ...Arabidopsis Mutants.” The Plant Journal, vol. 106, no. 1, Wiley, 25 Mar. 2021, pp. 8–22. Crossref, https://...
  11. Validated gRNA Sequences

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    Collection
    ...Mendenhall rde-1(D718) C. elegans TGCCATTAACTATGTATGT 59927 cut S. pyogenes 25161212 Fire rde-1(D801) C. elegans...24346702 Wolfe sqt-1 C. elegans GGAAGGACATAGTTGTCAT 59935 cut S. pyogenes 25161212 Fire sqt-1 C. elegans TGTGGAGTTGGGGTAGCGT...AMPK alpha 1 H. sapiens GGCTGTCGCCATCTTTCTCC 74374 nick S. pyogenes 26816379 Shaw AMPK alpha 1 H. sapiens...GCCACAAATCAGATTAATTTGGG 64939 tag S. pyogenes 26355004 Mendenhall csr-1 N. crassa GAGTGGGAGGGTCCCGTCCT 68060 cut S. pyogenes...GCATGGGTGATGTCAATGCC 69238 cut S. pyogenes 26480473 Wolfe Kit-1 R. norvegicus CATCTGTGCGGCCGTTGGCT 60969 cut S. pyogenes...TTGATCCAAATTATAACCCG 68896 interfere S. pyogenes 26918244 Lu NDM-1 GGGCAGTCGCTTCCAACGGTTTGATCGTCA 61270 cut S. pyogenes... 60719 activate S. pyogenes 25664691 Gersbach pha-1 C. elegans ATGAATAACTTGATGAACAT 61252 cut S. pyogenes...
  12. Immunology Research Plasmids and Resources

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    Collection
    ...IGHDY1 IGHD1-1 immunoglobulin heavy diversity 1-1 IGHD11 IGHD1-14 immunoglobulin heavy diversity 1-14 (non-...IGHV6-1 immunoglobulin heavy variable 6-1 IGHV61, VH IGHV7-4-1 immunoglobulin heavy variable 7-4-1 IGHV7... TAPBP-R, TAPBPR THBS1 thrombospondin 1 THBS, THBS-1, TSP, TSP-1, TSP1 TRPC4AP transient receptor potential...variable 2-8 IGLV28, V1-2 IGLV3-1 immunoglobulin lambda variable 3-1 IGLV31, V2-1 IGLV3-10 immunoglobulin lambda...NCC-1, NCC1, SCYA13, SCYL1 CCL14 chemokine (C-C motif) ligand 14 CC-1, CC-3, CKb1, FLJ16015, HCC-1, HCC... 3 G0S19-1, LD78ALPHA, MIP-1-alpha, MIP1A, SCYA3 CCL3L1 chemokine (C-C motif) ligand 3-like 1 464.2, D17S1718...GPD, GpFy, WBCQ1 DEFA1 defensin, alpha 1 DEF1, DEFA2, HNP-1, HP-1, MGC138393, MRS DEFA3 defensin, alpha...
  13. Genetic Code Expansion

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    ...Bacterial TAG Farren Isaacs 73545 pEvol-pAcFRS.1.t1 pAcFRS.1.t1 E. coli p-acetyl-l-phenylalanine (pAcF) Bacterial...Bacterial TAG Farren Isaacs 73547 pEvol-pAzFRS.1.t1 pAzFRS.1.t1 E. coli p-azido-l-phenylalanine (pAzF) Bacterial...7FTrp) Bacterial TAG Thomas Huber 207639 pEVOL-NBK-1 PylRS M. mazei Pyrrolysine Bacterial Cole DeForest...and tyrU gene replaced by GentR) and release factor 1. Expresses archaeal MjTyrRS/tRNA pair instead. For...122650 Mm-PylRS-AF/Pyl-tRNACUA PylRS M. mazei trans-cyclooct- 2-ene-lysine (TCOK) Mammalian TAG Howard Hang...
  14. Fluorescent Protein Guide: Empty Backbones

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    Collection
    ...Expression mEGFP 488 507 34 6 Monomer (A206K) pmEGFP-1 - Mammalian Expression mEGFP-N1 - Mammalian Expression...TurboRFP-pBAD - Bacterial Expression tdTomato 554 581 95 4.7 1 hr Tandem-dimer pCSCMV:tdTomato - Mammalian Expression...-pBAD - Bacterial Expression mRFP1 584 607 13 4.5 1 hr Monomer pcDNA3-mRFP - Mammalian Expression pMXs-mRFP1... of Biomedical Optics, Feburary 2005, Vol. 10 No. 1, p. 14003 Chu et al. : Nature Methods, May 2014 Vol...pp. 7913–7923 Hoi et al. : Chemistry & Biology, October 2013, Vol. 20 No. 10, pp.1296-304 Kogure et al....
  15. pCXLE toolkit: Efficient episomal plasmid-based method to reprogram peripheral blood cells to iPSCs

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    Blog Post
    ...are based on the Epstein-Barr Nuclear Antigen-1 (oriP-EBNA-1) system where each vector contains a viral ...replication, OriP and the EBNA-1 sequence that encodes for the DNA binding protein EBNA-1 [7]. These two sequences...extra plasmid, pCXWB-EBNA-1 is used in the reprogramming cocktail. pCXWB-EBNA-1 lacks oriP and is unable...expressing additional EBNA-1 transiently. The transiently expressed EBNA-1 increases protein expression...pCXLE vectors listed below in Table 1 are available at Addgene. Table 1: List of pCXLE episomal plasmids,... pCXLE-hOCT3/4-shp53-F 27077 OCT3/4 and shRNA against p53 pCXWB-EBNA1 37624 transient EBNA-1   Many...expression of the reprogramming factors- OCT3/4, SOX2, KLF4, and C-MYC [1]. For the derivation of clinical grade...
  16. Delivery Methods for Generating iPSCs

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    Blog Post
    ...) element and the cis-acting EBNA-1 from Epstein-Barr virus. EBNA-1 binds oriP and allows for replication...Difficult to purify reprogramming proteins. Table 1: Key Features of Different Methods for Generating ...-based expression requires serial transfection of 1 or 2 plasmids that express the reprogramming factors...  Replicating oriP/Epstein-Barr nuclear antigen-1 (EBNA1) based episomes: These plasmids carry the origin...method Most iPSC research falls into two categories: 1) studies focused on better understanding the mechanisms...iPSCs experiences in the comments below! References  1. Sano, Masayuki, Minoru Iijima, Manami Ohtaka, and...Methods figures were adapted from this reference. 1. Malik, Nasir, and Mahendra S. Rao. "A Review of the...
  17. Optimizing Donor DNA for Enhanced CRISPR Genome Editing

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    Blog Post
    ... Figure 1 below) was free to anneal to complementary ssDNA molecules in vitro. Figure 1: Cas9 binding...allowed sequence replacement rates of approximately 1%. This is by no means a large number, but it was attained...who worked on this publication:         References 1. Richardson, Christopher D., et al. "Enhancing homology-directed...contributed by guest blogger Chris Richardson, a Postdoctoral Researcher in Jacob Corn’s lab. CRISPR-Cas9 ... optional donor DNA. Chris Richardson is a Postdoctoral Researcher in Jacob Corn’s lab investigating...
  18. Starter guide to induced pluripotent stem cells (iPSCs) part 1:  A renaissance in regenerative medicine

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    ...into more specialized cells with specific functions [1]. In many tissues, stem cells serve to replenish/replace...damaged cells that no longer function adequately [1]. Stem cells’ ability to differentiate into multiple...://www.linkedin.com/in/kmukherjeephd/. References 1. Dittrich, R., M.W. Beckmann, and W. Wurfel, Non-embryo-destructive...The potential of muscle stem cells. Dev Cell, 2001. 1(3): p. 333-42. PubMed PMID: 11702945. 6. Cowan, C....preimplantation genetic diagnosis. Hum Reprod, 2008. 23(1): p. 46-53. PubMed PMID: 17989069. 8. Takahashi, K... the ectopic expression of four embryonic genes- OCT4, SOX2, KLF4, and C-MYC. iPSCs were first generated...communication and publishing after completing her postdoctoral training from Massachusetts General Hospital...
  19. Using Phosphoserine to Study Protein Phosphorylation

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    Blog Post
    ...cellular proteins are modified through phosphorylation (1). However, the expansion of studies on protein phosphorylation...three components required for translation (Figure 1): A tRNA that recognizes a specific ‘open’ codon ... open reading frame (ORF) of interest (Figure 2). 1. The phosphoserine OTS The backbone of the phosphoserine...modification allowed the deletion of release factor 1, the protein responsible for terminating translation...Rinehart lab: pCRT7 NT TOPO E17TAG GFP and pGEX-6P-1. The pCRT7 NT TOPO vector contains a mutant pSer-containing... can follow her on Twitter @nieminm.   References 1. Cohen, Philip. "The origins of protein phosphorylation...contributed by guest blogger Natalie Niemi, a postdoctoral fellow at the Morgridge Institute for Research...
  20. Starter Guide to induced Pluripotent Stem Cells (iPSCs) Part 2:  Reprogramming and Transdifferentiation

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    ...type of choice in vitro is known as reprogramming [1]. The process can be divided into two stages: Dedifferentiation...//www.linkedin.com/in/kmukherjeephd/.  References 1. Hochedlinger, K. and R. Jaenisch, Nuclear reprogramming...from human peripheral blood. Cell Stem Cell, 2010. 7(1): p. 15-9. PubMed PMID: 20621044. PubMed Central PMCID...induced pluripotent stem cells. Hepatology, 2010. 51(1): p. 297-305. PubMed PMID: 19998274. PubMed Central... pluripotent stem cells. Nat Biotechnol, 2014. 32(1): p. 84-91. PubMed PMID: 24291815. PubMed Central ...keratinocyte lineage. Methods Mol Biol, 2014. 1195: p. 1-12. PubMed PMID: 24510784. PubMed Central PMCID: PMC4096605...induced pluripotent stem cells. PLoS One, 2010. 5(1): p. e8763. PubMed PMID: 20098701. 31. Tang, Z.H.,...
  21. 28 Hot Plasmid Technologies from 2015

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    Blog Post
    ...your target gene! Tanenbaum et al., Cell. 2014 Oct 8. pii: S0092-8674(14)01227-6. Multi-bit genetic...light-sensitive LOV2 domain of Avena Sativa phototropin 1 (AsLOV2). In the dark, this peptide is caged by the...iLID nano and 800nM to 47µM for iLID micro; Figure 1). With this great affinity range, these LIDs have ...Figure 2). They are all available now at Addgene. 1 Lungu et al., Chem Biol. 2012 Apr 20;19(4):507-17....Guntas et al., Proc Natl Acad Sci USA 2015 Jan 6; 112(1):112-7. doi: 10.1073/pnas. CRISPR-Cas9 optogenetic... al., BMC Molecular Biology. 2013 August 20th; 14(1). TRICK: A method for visualizing the first round...for a variety of experimental purposes including (1) single or multiple, constitutive or inducible, gene...
  22. Cancer and the Immune System: Deciphering the Relationship

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    ...such as IL-8, IFNγ, and colony stimulating factor 1 (CSF-1). Additionally, tumor cells recruit regulatory...introduced the “Three Es of Immunoediting” nomenclature. 1. Eliminate - Latent tumors are recognized by effector...the tumor, activates hypoxia inducing factor (HIF-1), which promotes the production of VEGF to increase...This study used CRISPR gene editing to knockout PD-1 on immune cells harvested from patients and thereby...exploring new avenues in healthcare.   References 1. Vinay, Dass S., et al. "Immune evasion in cancer:...lymphoblastic leukaemia in children and young adults: a phase 1 dose-escalation trial." The Lancet 385.9967 (2015)...contributed by guest blogger Subhadra Jayaraman, a doctoral candidate at Binghamton University Cancer is one...
  23. X-CHIME: Context Dependent Germline Knockout in Immune Cells

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    ...in the immune system. Nature Immunology, 25(1), Article 1. https://doi.org/10.1038/s41590-023-01689-6 ... strains and lentiviral expression vectors (Table 1). The four systems Name Function Plasmid ... GFP (vex) Rosa26-FlpO-ERT2; H11-Cas9 Table 1: X-CHIME systems Proof of Concept These systems were...was lethal (LaFleur et al., 2024).   Figure 1: Schematic showing the X-CHIME approach. Figure from...genes in the immune system. Nature Communications, 10(1), 1668. https://doi.org/10.1038/s41467-019-09656-2... X-CHIME plasmids here!   Marty LaFleur is a Postdoctoral Fellow in Arlene Sharpe’s laboratory at Harvard...
  24. New Tools Enable CRISPRa for Neuroscience Applications

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    ...by mating with Cre-expressing mice. Figure 1: (A) Schematic of the Cre-dependent SPH construct ... alpha (aCaMKII; excitatory neurons) and Synapsin-1 (pan-neuronal) promoters (Figure 1b), and sgRNAs can...ubiquitous expression of sgRNA(s) and mCherry (vector 1) with neuron-specific expression of dCas9-VPR (Figure...Neuron-specific expression is mediated by the synapsin 1 (SYN) promoter, which was superior in its ability ...Patrick Miller-Rhodes, a Ruth L. Kirschstein NRSA Predoctoral Fellow at University of Rochester Medical Center...Miller-Rhodes is currently a Ruth L. Kirschstein NRSA Predoctoral Fellow at University of Rochester Medical Center...
  25. Designing Your Chalk Talk for the Academic Job Interview

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    ...acceptable. Aims should be mechanistic, doable by 1-3 people in 1-5 years, and contribute to resolving the overarching...possible, do at least two full length practices (~1 h) and get feedback. It’s also helpful to practice...contributed by Erik Snapp, the Director of Student and Postdoctoral Programs at the Janelia Research Campus of the...from Oregon Health Sciences University, did his postdoctoral fellowship with Jennifer Lippincott-Schwartz...and now serves as the Director of Student and Postdoctoral Programs at the Janelia Research Campus of the...
  26. Avoiding the Dark Side of Fluorescent Protein Fusions with mOX FPs

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    ...experiments or even negatively impact cells (see Figure 1). When behaving properly, FPs enable researchers ... disulfide bonds in the secretory pathway (Figure 1) [4,6–8]. Additionally, FPs that encode N-glycosylation... sarcoma-associated herpesvirus.       References 1. Snapp, Erik. "Design and use of fluorescent fusion...from Oregon Health Sciences University, did his postdoctoral fellowship with Jennifer Lippincott-Schwartz... from Albert Einstein College of Medicine. Her doctoral research was conducted in the laboratory of Erik...subcellular environment. Currently, she is a SPIRE postdoctoral fellow at the University of North Carolina at...
  27. Screening for Successful Genome Editing with Digital PCR

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    ...digital) signal at the end of the reaction (Figure 1). Partitions that did not contain any target DNA at...integrated through homology-directed repair (HDR) (1), or indel mutations resulting from non-homologous...Follow him on Twitter @AnotherLabRat.     References 1. Miyaoka, Y. et al. Isolation of single-base genome-edited...This post was contributed by Scott Findlay, a Postdoctoral Fellow at the University of Alberta. If you’... out of frame! Scott Findlay is currently a Postdoctoral Fellow at the University of Alberta. He is interested...
  28. Supporting Rare Disease Research with BeHeard 2017

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    ...estimated to affect anywhere from 1 in 6,000 to 1 in 19,000 live births (1).  While disruption of the smn1... funding opportunities. References 1. Jones, C., et al. "PP09. 1–2352: Systematic review of incidence...Peritoneal Mesothelioma  Noushin Nabavi is a Postdoctoral Fellow at the Vancouver Prostate Center and ...
  29. Tips for Getting a Faculty Position

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    ...Full "Applying for a Faculty Position" eBook Here 1. Have a competitive CV You don't necessarily need ...that people would agree is important to understand. (1-2 sentences). For example: Distinguishing correctly... What will be the focus of your first grant? (1-2 sentences) Simply stated, what are your aims... potential collaborations, critiques of your postdoctoral research, etc. The second question is whether...from Oregon Health Sciences University, did his postdoctoral fellowship with Jennifer Lippincott-Schwartz...and now serves as the Director of Student and Postdoctoral Programs at the Janelia Research Campus of the...
  30. Cancer, Inflammation and Immunity - Harnessing the Body’s Defenses to Fight Cancer

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    ...aggregation, and potentiates the effect of PD-1 blockade.“ (Ref 4). PD-1 helps tumor cells evade the immune system...fasting has a positive effect on cancer treatment (Ref 1). As described in the presentation, starvation or ...of the immunosuppressive cell surface receptor PD-1. This immunosuppressive environment in turn may represent...  (Chimeric Antigen Receptors) CAR T cells and PD-1 modulators. An exciting development in immunotherapy...free deposit and distribution service! References: 1. Pietrocola, Federico, et al. "Caloric restriction...Relationship” by our guest blogger Subhadra Jayaraman, a doctoral candidate at Binghamton University! Cancer therapeutics...
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