STIMULATED LYMPHOCYTE CULTURES : RESPONDER RECRUITMENT AND CELL CYCLE KINETICS

Lymphocytes, stimulated with different doses of plant mitogens or allogeneic cells, incorporate varying amounts of [(3)H]thymidine. Theoretically, this may be due to different numbers of responding cells, to earlier proliferative response of these cells, and/or to their more or less rapid transit th...

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Autores principales: Lohrmann, Hans-Peter, Graw, Carole M., Graw, Robert G.
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1974
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2139670/
https://www.ncbi.nlm.nih.gov/pubmed/4825240
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author Lohrmann, Hans-Peter
Graw, Carole M.
Graw, Robert G.
author_facet Lohrmann, Hans-Peter
Graw, Carole M.
Graw, Robert G.
author_sort Lohrmann, Hans-Peter
collection PubMed
description Lymphocytes, stimulated with different doses of plant mitogens or allogeneic cells, incorporate varying amounts of [(3)H]thymidine. Theoretically, this may be due to different numbers of responding cells, to earlier proliferative response of these cells, and/or to their more or less rapid transit through the cell cycle. Dog peripheral blood lymphocytes were stimulated in vitro with different doses of phytohemagglutinin (PHA), or with allogeneic lymphocytes. After their synchronization by incubation with hydroxyurea (4 mM), the mean durations of the cell cycle, and of the different cell cycle phases were constant and unrelated to strength or type of stimulation. PHA-stimulated lymphocyte cultures were maintained in the presence of colchicine, to prevent clonal proliferation of responding lymphocytes. DNA uptake in this setting, attributed to first generation responders, was related to the strength of proliferative lymphocyte response in control cultures without colchicine. Furthermore, cell proliferation occurred earlier with greater stimulation. It is concluded that higher [(3)H]thymidine uptake in vitro by stimulated lymphocytes is due to greater numbers of responding cells, which are triggered into proliferative response earlier, and not to a more rapid transit of the responding cells through the cell cycle.
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spelling pubmed-21396702008-04-17 STIMULATED LYMPHOCYTE CULTURES : RESPONDER RECRUITMENT AND CELL CYCLE KINETICS Lohrmann, Hans-Peter Graw, Carole M. Graw, Robert G. J Exp Med Article Lymphocytes, stimulated with different doses of plant mitogens or allogeneic cells, incorporate varying amounts of [(3)H]thymidine. Theoretically, this may be due to different numbers of responding cells, to earlier proliferative response of these cells, and/or to their more or less rapid transit through the cell cycle. Dog peripheral blood lymphocytes were stimulated in vitro with different doses of phytohemagglutinin (PHA), or with allogeneic lymphocytes. After their synchronization by incubation with hydroxyurea (4 mM), the mean durations of the cell cycle, and of the different cell cycle phases were constant and unrelated to strength or type of stimulation. PHA-stimulated lymphocyte cultures were maintained in the presence of colchicine, to prevent clonal proliferation of responding lymphocytes. DNA uptake in this setting, attributed to first generation responders, was related to the strength of proliferative lymphocyte response in control cultures without colchicine. Furthermore, cell proliferation occurred earlier with greater stimulation. It is concluded that higher [(3)H]thymidine uptake in vitro by stimulated lymphocytes is due to greater numbers of responding cells, which are triggered into proliferative response earlier, and not to a more rapid transit of the responding cells through the cell cycle. The Rockefeller University Press 1974-05-01 /pmc/articles/PMC2139670/ /pubmed/4825240 Text en Copyright © 1974 by The Rockefeller University Press This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).
spellingShingle Article
Lohrmann, Hans-Peter
Graw, Carole M.
Graw, Robert G.
STIMULATED LYMPHOCYTE CULTURES : RESPONDER RECRUITMENT AND CELL CYCLE KINETICS
title STIMULATED LYMPHOCYTE CULTURES : RESPONDER RECRUITMENT AND CELL CYCLE KINETICS
title_full STIMULATED LYMPHOCYTE CULTURES : RESPONDER RECRUITMENT AND CELL CYCLE KINETICS
title_fullStr STIMULATED LYMPHOCYTE CULTURES : RESPONDER RECRUITMENT AND CELL CYCLE KINETICS
title_full_unstemmed STIMULATED LYMPHOCYTE CULTURES : RESPONDER RECRUITMENT AND CELL CYCLE KINETICS
title_short STIMULATED LYMPHOCYTE CULTURES : RESPONDER RECRUITMENT AND CELL CYCLE KINETICS
title_sort stimulated lymphocyte cultures : responder recruitment and cell cycle kinetics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2139670/
https://www.ncbi.nlm.nih.gov/pubmed/4825240
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