title: T lymphocytes and neutrophil granulocytes differ in regulatory signaling and migratory dynamics with regard to spontaneous locomotion and chemotaxis.
abstract: Chemotactic migration of T lymphocytes and neutrophil granulocytes within a three-dimensional collagen matrix is distinct from spontaneous, matrix-induced migration concerning dynamic parameters and regulatory intracellular signaling. Both spontaneous T lymphocyte locomotion and stromal-cell-derived factor-1 (SDF-1)-induced chemotaxis-involved protein tyrosine kinase (PTK) activity, whereas only SDF-1-induced migration was protein kinase C (PKC) dependent. Spontaneous locomotion of neutrophil granulocytes was independent of PKC and PTK activity, but formyl-methionyl-leucyl-phenylalanine-induced migration involved PKC activity. In addition, the microtubule cytoskeleton was not changed after induction of chemotaxis in both cell types. T lymphocytes had a well-developed microtubule cytoskeleton with the microtubule organizing center located in the uropod, whereas neutrophil granulocytes revealed a clustered tubulin distribution at the leading edge of the migrating cell. Therefore, differences of the microtubule cytoskeleton might contribute to differences in locomotion between T lymphocytes and neutrophil granulocytes but not to differences between spontaneous locomotion and chemotaxis.
authors.affiliation: Institute for Immunology, Witten/Herdecke University, Stockumer Strasse 10, Witten, 58448, Germany.
authors.forename: F
authors.initials: F
authors.lastname: Entschladen
authors.forename: M
authors.initials: M
authors.lastname: Gunzer
authors.forename: C M
authors.initials: CM
authors.lastname: Scheuffele
authors.forename: B
authors.initials: B
authors.lastname: Niggemann
authors.forename: K S
authors.initials: KS
authors.lastname: Zänker
mesh_terms: D002465:Cell Movement / Q000276:immunology*; D002478:Cells, Cultured; D054377:Chemokine CXCL12; D019743:Chemokines, CXC / Q000494:pharmacology; D002634:Chemotaxis, Leukocyte / Q000276:immunology*; D006801:Humans; D008870:Microtubules / Q000276:immunology / Q000378:metabolism; D009240:N-Formylmethionine Leucyl-Phenylalanine / Q000494:pharmacology; D009504:Neutrophils / Q000201:enzymology / Q000502:physiology*; D011493:Protein Kinase C / Q000037:antagonists & inhibitors / Q000502:physiology; D011505:Protein-Tyrosine Kinases / Q000037:antagonists & inhibitors / Q000502:physiology; D015398:Signal Transduction / Q000276:immunology*; D013601:T-Lymphocytes / Q000201:enzymology / Q000378:metabolism*
chemical_list: C515255:CXCL12 protein, human; D054377:Chemokine CXCL12; D019743:Chemokines, CXC; D009240:N-Formylmethionine Leucyl-Phenylalanine; D011505:Protein-Tyrosine Kinases; D011493:Protein Kinase C