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...
Autores principales: | , , |
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Formato: | Texto |
Lenguaje: | English |
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The Rockefeller University Press
1974
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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. |
format | Text |
id | pubmed-2139670 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1974 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
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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