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Quantitative Subcellular Analysis of Cyclic Cell-Penetrating Peptide EJP18 in Nonadherent Cells

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Part of the book series: Methods in Molecular Biology ((MIMB,volume 2383))

Abstract

Cyclization of cell-penetrating peptides (CPPs) often results in improved capacity for intracellular delivery of a range of cargoes but quantitating the distinct subcellular localization of them, and their linear counterparts, remains a challenge. Here we describe an optimized method for recombinant generation and purification of eGFP attached to the cyclic form of the newly discovered CPP EJP18 in E. coli. We also demonstrate a novel microscopy method for quantifying its subcellular distribution in leukemia cells.

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References

  1. Guidotti G, Brambilla L, Rossi D (2017) Cell-penetrating peptides: from basic research to clinics. Trends Pharmacol Sci 38(4):406–424

    Article  CAS  Google Scholar 

  2. Kurrikoff K, Vunk B, Langel U (2020) Status update in the use of cell-penetrating peptides for the delivery of macromolecular therapeutics. Expert Opin Biol Ther:1–10

    Google Scholar 

  3. Jones AT, Sayers EJ (2012) Cell entry of cell penetrating peptides: tales of tails wagging dogs. J Control Release 161(2):582–591

    Article  CAS  Google Scholar 

  4. Rodrigues M, de la Torre BG, Andreu D, Santos NC (2013) Kinetic uptake profiles of cell penetrating peptides in lymphocytes and monocytes. Biochim Biophys Acta 1830(10):4554–4563

    Article  CAS  Google Scholar 

  5. Nischan N, Herce HD, Natale F, Bohlke N, Budisa N, Cardoso MC et al (2015) Covalent attachment of cyclic TAT peptides to GFP results in protein delivery into live cells with immediate bioavailability. Angew Chem Int Ed Engl 54(6):1950–1953

    Article  CAS  Google Scholar 

  6. Patel SG, Sayers EJ, He L, Narayan R, Williams TL, Mills EM et al (2019) Cell-penetrating peptide sequence and modification dependent uptake and subcellular distribution of green florescent protein in different cell lines. Sci Rep 9(1):6298

    Article  Google Scholar 

  7. Qian Z, Martyna A, Hard RL, Wang J, Appiah-Kubi G, Coss C et al (2016) Discovery and mechanism of highly efficient cyclic cell-penetrating peptides. Biochemistry 55(18):2601–2612

    Article  CAS  Google Scholar 

  8. Eissa NG, Sayers EJ, Birch D, Patel SG, Tsai YH, Nielsen HM et al (2020) EJP18 peptide derived from the juxtamembrane domain of epidermal growth factor receptor represents a novel membrane-active cell-penetrating peptide. Biochem J 477(1):45–60

    Article  CAS  Google Scholar 

  9. Schindelin J, Arganda-Carreras I, Frise E, Kaynig V, Longair M, Pietzsch T et al (2012) Fiji: an open-source platform for biological-image analysis. Nat Methods 9(7):676–682

    Article  CAS  Google Scholar 

  10. He L, Sayers EJ, Watson P, Jones AT (2018) Contrasting roles for actin in the cellular uptake of cell penetrating peptide conjugates. Sci Rep 8(1):7318

    Article  CAS  Google Scholar 

  11. Buggenthin F, Marr C, Schwarzfischer M, Hoppe PS, Hilsenbeck O, Schroeder T et al (2013) An automatic method for robust and fast cell detection in bright field images from high-throughput microscopy. BMC Bioinformatics 14:297

    Article  Google Scholar 

  12. Drey LL, Graber MC, Bieschke J (2013) Counting unstained, confluent cells by modified bright-field microscopy. BioTechniques 55(1):28–33

    Article  Google Scholar 

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Acknowledgments

We thank Sanjay G. Patel for cloning plasmid pEV eGFP-EJP18.

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Correspondence to Arwyn T. Jones .

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© 2022 The Author(s), under exclusive license to Springer Science+Business Media, LLC, part of Springer Nature

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Sayers, E.J., Barlow, V.L., Tsai, YH., Jones, A.T. (2022). Quantitative Subcellular Analysis of Cyclic Cell-Penetrating Peptide EJP18 in Nonadherent Cells. In: Langel, Ü. (eds) Cell Penetrating Peptides. Methods in Molecular Biology, vol 2383. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-1752-6_14

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  • DOI: https://doi.org/10.1007/978-1-0716-1752-6_14

  • Published:

  • Publisher Name: Humana, New York, NY

  • Print ISBN: 978-1-0716-1751-9

  • Online ISBN: 978-1-0716-1752-6

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