Mammalian cell traces – morphology, molecular composition, artificial guidance and biotechnological relevance as a new type of “bionanotube” |
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Authors: | H. Zimmermann E. Richter C. Reichle I. Westphal P. Geggier U. Rehn S. Rogaschewski W. Bleiss G.R. Fuhr |
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Affiliation: | Humboldt-Universit?t zu Berlin, Institut für Biologie, Zentrum für Biophysik und Bioinformatik, Invalidenstr. 42, 10115 Berlin, Germany, DE Humboldt-Universit?t zu Berlin, Institut für Physik, Lehrstuhl für Oberfl?chenphysik und Atomstossprozesse, Invalidenstr. 110, 10115 Berlin, Germany, DE Humboldt-Universit?t zu Berlin, Institut für Biologie, Lehrstuhl für Molekulare Parasitologie, Philippstr. 13, 10115 Berlin, Germany, DE
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Abstract: | During locomotion, adherently growing cells release highly ordered structures consisting of filaments and patches often dendritically organised. Such traces can be re-incorporated by the donor cell or disconnected and lost. Here, we present the results of a three-year research programme into trace formation and structural organisation including the influence of substrate surface properties. Some phenomena may, ultimately, have medical or technological applications. These include: (i) the deposition and re-incorporation of cellular material as cells move forward and backward; (ii) the ability of cells to differentiate between their own and foreign traces; (iii) the presence of receptors in the intact membrane envelope of filaments and patches; and (iv) the cytoplasmic content of patches. Trace formation is physiologically controlled and a characteristic of many types of actively migrating higher animal and human cells. Possible applications and perspectives are discussed and the importance of cell-trace elements as “bionanotubes” and biological submicron compartments of cells is explained. Received: 5 February 2001 / Accepted: 6 February 2001 / Published online: 23 May 2001 |
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Keywords: | PACS: 87.19.St 87.17.Jj 87.16.Qp |
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