Amoeboid Cells Use Protrusions for Walking, Gliding and Swimming
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{"title"=>"Amoeboid cells use protrusions for walking, gliding and swimming", "type"=>"journal", "authors"=>[{"first_name"=>"Peter J.M.", "last_name"=>"van Haastert", "scopus_author_id"=>"7006231257"}], "year"=>2011, "source"=>"PLoS ONE", "identifiers"=>{"issn"=>"19326203", "scopus"=>"2-s2.0-80655128618", "sgr"=>"80655128618", "pui"=>"362888143", "isbn"=>"1932-6203 (Electronic)\\r1932-6203 (Linking)", "pmid"=>"22096590", "doi"=>"10.1371/journal.pone.0027532"}, "id"=>"72a5c10b-8ce3-3b2f-813b-3bec6cb79688", "abstract"=>"Amoeboid cells crawl using pseudopods, which are convex extensions of the cell surface. In many laboratory experiments, cells move on a smooth substrate, but in the wild cells may experience obstacles of other cells or dead material, or may even move in liquid. To understand how cells cope with heterogeneous environments we have investigated the pseudopod life cycle of wild type and mutant cells moving on a substrate and when suspended in liquid. We show that the same pseudopod cycle can provide three types of movement that we address as walking, gliding and swimming. In walking, the extending pseudopod will adhere firmly to the substrate, which allows cells to generate forces to bypass obstacles. Mutant cells with compromised adhesion can move much faster than wild type cells on a smooth substrate (gliding), but cannot move effectively against obstacles that provide resistance. In a liquid, when swimming, the extending pseudopods convert to side-bumps that move rapidly to the rear of the cells. Calculations suggest that these bumps provide sufficient drag force to mediate the observed forward swimming of the cell.", "link"=>"http://www.mendeley.com/research/amoeboid-cells-protrusions-walking-gliding-swimming", "reader_count"=>37, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Professor > Associate Professor"=>5, "Researcher"=>8, "Student > Ph. D. Student"=>9, "Student > Master"=>5, "Other"=>1, "Student > Bachelor"=>7, "Student > Doctoral Student"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Professor > Associate Professor"=>5, "Researcher"=>8, "Student > Ph. D. Student"=>9, "Student > Master"=>5, "Other"=>1, "Student > Bachelor"=>7, "Student > Doctoral Student"=>1}, "reader_count_by_subject_area"=>{"Engineering"=>1, "Unspecified"=>3, "Biochemistry, Genetics and Molecular Biology"=>5, "Agricultural and Biological Sciences"=>16, "Neuroscience"=>1, "Physics and Astronomy"=>6, "Chemistry"=>3, "Computer Science"=>1, "Sports and Recreations"=>1}, "reader_count_by_subdiscipline"=>{"Engineering"=>{"Engineering"=>1}, "Neuroscience"=>{"Neuroscience"=>1}, "Chemistry"=>{"Chemistry"=>3}, "Physics and Astronomy"=>{"Physics and Astronomy"=>6}, "Sports and Recreations"=>{"Sports and Recreations"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>16}, "Computer Science"=>{"Computer Science"=>1}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>5}, "Unspecified"=>{"Unspecified"=>3}}, "reader_count_by_country"=>{"United States"=>1, "Lithuania"=>1, "Portugal"=>1, "Russia"=>1}, "group_count"=>2}

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/714397"], "description"=>"<p>All cells extend pseudopods at a frequency of ∼4 per minute. In gliding cells, pseudopods are large and all contribute to forward moving; side bumps are rare. In walking cells, pseudopods are smaller and only ∼75% of pseudopods contribute to forward movement; these pseudopods convert to side-bumps that are stationary relative to the substrate. In swimming cells, pseudopods are small and convert to side-bumps that move to the rear of the cell. On average walking and swimming cells have ∼3 side-bumps (see <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0027532#pone.0027532.s001\" target=\"_blank\">table S1</a>)</p>", "links"=>[], "tags"=>["microbiology", "cell biology", "biophysics"], "article_id"=>384765, "categories"=>["Cell Biology", "Microbiology", "Biophysics"], "users"=>["Peter J. M. Van Haastert"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0027532.g004", "stats"=>{"downloads"=>1, "page_views"=>5, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Model_of_gliding_walking_and_swimming_/384765", "title"=>"Model of gliding, walking and swimming.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-11-09 01:19:25"}
  • {"files"=>["https://ndownloader.figshare.com/files/361921", "https://ndownloader.figshare.com/files/361966"], "description"=>"<div><p>Amoeboid cells crawl using pseudopods, which are convex extensions of the cell surface. In many laboratory experiments, cells move on a smooth substrate, but in the wild cells may experience obstacles of other cells or dead material, or may even move in liquid. To understand how cells cope with heterogeneous environments we have investigated the pseudopod life cycle of wild type and mutant cells moving on a substrate and when suspended in liquid. We show that the same pseudopod cycle can provide three types of movement that we address as walking, gliding and swimming. In walking, the extending pseudopod will adhere firmly to the substrate, which allows cells to generate forces to bypass obstacles. Mutant cells with compromised adhesion can move much faster than wild type cells on a smooth substrate (gliding), but cannot move effectively against obstacles that provide resistance. In a liquid, when swimming, the extending pseudopods convert to side-bumps that move rapidly to the rear of the cells. Calculations suggest that these bumps provide sufficient drag force to mediate the observed forward swimming of the cell.</p> </div>", "links"=>[], "tags"=>["amoeboid", "cells", "protrusions", "gliding"], "article_id"=>131547, "categories"=>["Cell Biology", "Microbiology", "Biophysics"], "users"=>["Peter J. M. Van Haastert"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0027532.s001", "https://dx.doi.org/10.1371/journal.pone.0027532.s002"], "stats"=>{"downloads"=>6, "page_views"=>10, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Amoeboid_Cells_Use_Protrusions_for_Walking_Gliding_and_Swimming/131547", "title"=>"Amoeboid Cells Use Protrusions for Walking, Gliding and Swimming", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2011-11-09 00:25:47"}
  • {"files"=>["https://ndownloader.figshare.com/files/714272"], "description"=>"<p>A. Adhesion of wild type and <i>gbpD</i>-null cells, expressed as the fraction of cells that detach from a plastic surface after shaking in buffer for 1 hour <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0027532#pone.0027532-Kortholt1\" target=\"_blank\">[28]</a>. B. Speed of wild-type and mutant cells on a solid support and under a block of agar.</p>", "links"=>[], "tags"=>["microbiology", "cell biology", "biophysics"], "article_id"=>384641, "categories"=>["Cell Biology", "Microbiology", "Biophysics"], "users"=>["Peter J. M. Van Haastert"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0027532.g003", "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Gliding_cells_/384641", "title"=>"Gliding cells.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-11-09 01:17:21"}
  • {"files"=>["https://ndownloader.figshare.com/files/714161"], "description"=>"<p>The trajectory of 8 tail-attached cells was followed after detachment from the surface. A. Tracks of 2 swimming cells at 20 s interval; * indicate the start. B. Speed of the same 2 cells. C. Mean square displacement of 8 swimming cells. The parameters of the equation for a persistent random walk in three dimensions were fitted to the data points; the line presents the optimal fit with speed S = 3 µm/min and persistence time P = 1.3 min.</p>", "links"=>[], "tags"=>["microbiology", "cell biology", "biophysics"], "article_id"=>384530, "categories"=>["Cell Biology", "Microbiology", "Biophysics"], "users"=>["Peter J. M. Van Haastert"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0027532.g002", "stats"=>{"downloads"=>0, "page_views"=>1, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Swimming_cells_/384530", "title"=>"Swimming cells.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2011-11-09 01:15:30"}
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PMC Usage Stats | Further Information

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Relative Metric

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