Abstract
Host cell invasion by Toxoplasma gondii/T. gondii tachyzoites is an obligate but complex multistep process occurring in second-scale. To capture the dynamic nature of the whole entry process requires fast and high-resolution live cell imaging. Recent advances in T. gondii/host cell genome editing and in quantitative live cell imaging—image acquisition and processing included—provide a systematic way to accurately phenotype T. gondii tachyzoite invasive behaviour and to highlight any variation or default from a standard scenario. Therefore, applying these combined strategies allows gaining deeper insights into the complex mechanisms underlying host cell invasion.
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References
Tardieux I, Baum J (2016) Reassessing the mechanics of parasite motility and host-cell invasion. J Cell Biol 214:507–515. https://doi.org/10.1083/jcb.201605100
Sidik SM, Huet D, Ganesan SM, Huynh M-H, Wang T, Nasamu AS, Thiru P, Saeij JPJ, Carruthers VB, Niles JC, Lourido S (2016) A genome-wide CRISPR screen in Toxoplasma identifies essential apicomplexan genes. Cell 166:1423–1435.e12. https://doi.org/10.1016/j.cell.2016.08.019
Sidik SM, Huet D, Lourido S (2018) CRISPR-Cas9-based genome-wide screening of Toxoplasma gondii. Nat Protoc 13:307–323. https://doi.org/10.1038/nprot.2017.131
Bichet M, Joly C, Henni AH, Guilbert T, Xémard M, Tafani V, Lagal V, Charras G, Tardieux I (2014) The Toxoplasma-host cell junction is anchored to the cell cortex to sustain parasite invasive force. BMC Biol 12:773. https://doi.org/10.1186/s12915-014-0108-y
Hu K, Johnson J, Florens L, Fraunholz M, Suravajjala S, DiLullo C, Yates J, Roos DS, Murray JM (2006) Cytoskeletal components of an invasion machine--the apical complex of Toxoplasma gondii. PLoS Pathog 2:e13. https://doi.org/10.1371/journal.ppat.0020013
Mondragon R, Frixione E (1996) Ca(2+)-dependence of conoid extrusion in Toxoplasma gondii tachyzoites. J Eukaryot Microbiol 43:120–127
Lourido S, Tang K, Sibley LD (2012) Distinct signalling pathways control Toxoplasma egress and host-cell invasion. EMBO J 31:4524–4534. https://doi.org/10.1038/emboj.2012.299
Lourido S, Moreno SNJ (2015) The calcium signaling toolkit of the apicomplexan parasites Toxoplasma gondii and Plasmodium spp. Cell Calcium 57:186–193. https://doi.org/10.1016/j.ceca.2014.12.010
Carey KL, Westwood NJ, Mitchison TJ, Ward GE (2004) A small-molecule approach to studying invasive mechanisms of Toxoplasma gondii. Proc Natl Acad Sci U S A 101:7433–7438. https://doi.org/10.1073/pnas.0307769101
Hakimi M-A, Olias P, Sibley LD (2017) Toxoplasma effectors targeting host signaling and transcription. Clin Microbiol Rev 30:615–645. https://doi.org/10.1128/CMR.00005-17
Graindorge A, Frénal K, Jacot D, Salamun J, Marq JB, Soldati-Favre D (2016) The conoid associated motor MyoH is indispensable for Toxoplasma gondii entry and exit from host cells. PLoS Pathog 12:e1005388. https://doi.org/10.1371/journal.ppat.1005388
Mordue DG, Desai N, Dustin M, Sibley LD (1999) Invasion by Toxoplasma gondii establishes a moving junction that selectively excludes host cell plasma membrane proteins on the basis of their membrane anchoring. J Exp Med 190:1783–1792
Charron AJ, Sibley LD (2004) Molecular partitioning during host cell penetration by Toxoplasma gondii. Traffic 5:855–867. https://doi.org/10.1111/j.1600-0854.2004.00228.x
Suss-Toby E, Zimmerberg J, Ward GE (1996) Toxoplasma invasion: the parasitophorous vacuole is formed from host cell plasma membrane and pinches off via a fission pore. Proc Natl Acad Sci U S A 93:8413–8418
Pavlou G, Biesaga M, Touquet B, Lagal V, Balland M, Dufour A, Hakimi M-A, Tardieux I (2018) Toxoplasma parasite twisting motion mechanically induces host cell membrane fission to complete invasion within a protective vacuole. Cell Host Microbe 24:81–96.e5. https://doi.org/10.1016/j.chom.2018.06.003
Fox BA, Ristuccia JG, Gigley JP, Bzik DJ (2009) Efficient gene replacements in Toxoplasma gondii strains deficient for nonhomologous end joining. Eukaryot Cell 8:520–529. https://doi.org/10.1128/EC.00357-08
Huynh M-H, Carruthers VB (2009) Tagging of endogenous genes in a Toxoplasma gondii strain lacking Ku80. Eukaryot Cell 8:530–539. https://doi.org/10.1128/EC.00358-08
Sidik SM, Hackett CG, Tran F, Westwood NJ, Lourido S (2014) Efficient genome engineering of Toxoplasma gondii using CRISPR/Cas9. PLoS One 9:e100450. https://doi.org/10.1371/journal.pone.0100450
Shen B, Brown KM, Lee TD, Sibley LD (2014) Efficient gene disruption in diverse strains of Toxoplasma gondii using CRISPR/CAS9. MBio 5:e01114–e01114. https://doi.org/10.1128/mBio.01114-14
Andenmatten N, Egarter S, Jackson AJ, Jullien N, Herman J-P, Meissner M (2013) Conditional genome engineering in Toxoplasma gondii uncovers alternative invasion mechanisms. Nat Methods 10:125–127. https://doi.org/10.1038/nmeth.2301
Bichet M, Touquet B, Gonzalez V, Florent I, Meissner M, Tardieux I (2016) Genetic impairment of parasite myosin motors uncovers the contribution of host cell membrane dynamics to Toxoplasma invasion forces. BMC Biol 14:97. https://doi.org/10.1186/s12915-016-0316-8
Rhee JM, Pirity MK, Lackan CS, Long JZ, Kondoh G, Takeda J, Hadjantonakis A-K (2006) In vivo imaging and differential localization of lipid-modified GFP-variant fusions in embryonic stem cells and mice. Genesis 44:202–218. https://doi.org/10.1002/dvg.20203
Egarter S, Andenmatten N, Jackson AJ, Whitelaw JA, Pall G, Black JA, Ferguson DJP, Tardieux I, Mogilner A, Meissner M (2014) The Toxoplasma Acto-MyoA motor complex is important but not essential for gliding motility and host cell invasion. PLoS One 9:e91819. https://doi.org/10.1371/journal.pone.0091819
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Pavlou, G., Tardieux, I. (2020). Phenotyping Toxoplasma Invasive Skills by Fast Live Cell Imaging. In: Tonkin, C. (eds) Toxoplasma gondii. Methods in Molecular Biology, vol 2071. Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9857-9_12
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DOI: https://doi.org/10.1007/978-1-4939-9857-9_12
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