Cargando…
THE REGULATION OF PINOCYTOSIS IN MOUSE MACROPHAGES : III. THE INDUCTION OF VESICLE FORMATION BY NUCLEOSIDES AND NUCLEOTIDES
A study has been conducted on the influence of nucleosides and nucleotides to induce the formation of pinocytic vesicles in cultured mouse macrophages. Extremely high levels of cytoplasmic vesicles were found after exposure of macrophages to adenosine 5'-phosphate, ADP, and ATP. A limited vesic...
Autores principales: | , |
---|---|
Formato: | Texto |
Lenguaje: | English |
Publicado: |
The Rockefeller University Press
1967
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2138296/ https://www.ncbi.nlm.nih.gov/pubmed/6016899 |
_version_ | 1782143530295099392 |
---|---|
author | Cohn, Zanvil A. Parks, Eileen |
author_facet | Cohn, Zanvil A. Parks, Eileen |
author_sort | Cohn, Zanvil A. |
collection | PubMed |
description | A study has been conducted on the influence of nucleosides and nucleotides to induce the formation of pinocytic vesicles in cultured mouse macrophages. Extremely high levels of cytoplasmic vesicles were found after exposure of macrophages to adenosine 5'-phosphate, ADP, and ATP. A limited vesicle response was obtained with adenosine 2'-. and 3'-phosphate, 3',5'-adenosine-phosphate, and deoxyadenosine 5'-phosphate. The di- and triphosphates of guanosine, inosine, cytidine, and uridine were stimulatory but much less active than the adenosine derivatives. Adenosine administration resulted in high levels of pinocytic activity whereas other nucleosides, including inosine, guanosine, cytidine, and uridine, yielded little or no stimulatory effect. Adenosine and its 5'-phosphates produced morphological effects on macrophages characterized by increased spreading, a thin, peripheral cytoplasmic veil with denser cores of oriented mitochondria and contraction of the centre-sphere region. Large numbers of pinosomes were seen in association with mitochondria-containing portions of the cytoplasm. The stimulatory effects of adenosine and ATP were rapid and involved the majority of cells in the culture. Adenosine was unable to reverse the pinocytosis inhibition produced by 2,4-DNP, whereas ATP raised vesicle counts to high levels. Possible mechanisms for these effects are discussed. |
format | Text |
id | pubmed-2138296 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 1967 |
publisher | The Rockefeller University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-21382962008-04-17 THE REGULATION OF PINOCYTOSIS IN MOUSE MACROPHAGES : III. THE INDUCTION OF VESICLE FORMATION BY NUCLEOSIDES AND NUCLEOTIDES Cohn, Zanvil A. Parks, Eileen J Exp Med Article A study has been conducted on the influence of nucleosides and nucleotides to induce the formation of pinocytic vesicles in cultured mouse macrophages. Extremely high levels of cytoplasmic vesicles were found after exposure of macrophages to adenosine 5'-phosphate, ADP, and ATP. A limited vesicle response was obtained with adenosine 2'-. and 3'-phosphate, 3',5'-adenosine-phosphate, and deoxyadenosine 5'-phosphate. The di- and triphosphates of guanosine, inosine, cytidine, and uridine were stimulatory but much less active than the adenosine derivatives. Adenosine administration resulted in high levels of pinocytic activity whereas other nucleosides, including inosine, guanosine, cytidine, and uridine, yielded little or no stimulatory effect. Adenosine and its 5'-phosphates produced morphological effects on macrophages characterized by increased spreading, a thin, peripheral cytoplasmic veil with denser cores of oriented mitochondria and contraction of the centre-sphere region. Large numbers of pinosomes were seen in association with mitochondria-containing portions of the cytoplasm. The stimulatory effects of adenosine and ATP were rapid and involved the majority of cells in the culture. Adenosine was unable to reverse the pinocytosis inhibition produced by 2,4-DNP, whereas ATP raised vesicle counts to high levels. Possible mechanisms for these effects are discussed. The Rockefeller University Press 1967-02-28 /pmc/articles/PMC2138296/ /pubmed/6016899 Text en Copyright © 1967 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 Cohn, Zanvil A. Parks, Eileen THE REGULATION OF PINOCYTOSIS IN MOUSE MACROPHAGES : III. THE INDUCTION OF VESICLE FORMATION BY NUCLEOSIDES AND NUCLEOTIDES |
title | THE REGULATION OF PINOCYTOSIS IN MOUSE MACROPHAGES : III. THE INDUCTION OF VESICLE FORMATION BY NUCLEOSIDES AND NUCLEOTIDES |
title_full | THE REGULATION OF PINOCYTOSIS IN MOUSE MACROPHAGES : III. THE INDUCTION OF VESICLE FORMATION BY NUCLEOSIDES AND NUCLEOTIDES |
title_fullStr | THE REGULATION OF PINOCYTOSIS IN MOUSE MACROPHAGES : III. THE INDUCTION OF VESICLE FORMATION BY NUCLEOSIDES AND NUCLEOTIDES |
title_full_unstemmed | THE REGULATION OF PINOCYTOSIS IN MOUSE MACROPHAGES : III. THE INDUCTION OF VESICLE FORMATION BY NUCLEOSIDES AND NUCLEOTIDES |
title_short | THE REGULATION OF PINOCYTOSIS IN MOUSE MACROPHAGES : III. THE INDUCTION OF VESICLE FORMATION BY NUCLEOSIDES AND NUCLEOTIDES |
title_sort | regulation of pinocytosis in mouse macrophages : iii. the induction of vesicle formation by nucleosides and nucleotides |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2138296/ https://www.ncbi.nlm.nih.gov/pubmed/6016899 |
work_keys_str_mv | AT cohnzanvila theregulationofpinocytosisinmousemacrophagesiiitheinductionofvesicleformationbynucleosidesandnucleotides AT parkseileen theregulationofpinocytosisinmousemacrophagesiiitheinductionofvesicleformationbynucleosidesandnucleotides AT cohnzanvila regulationofpinocytosisinmousemacrophagesiiitheinductionofvesicleformationbynucleosidesandnucleotides AT parkseileen regulationofpinocytosisinmousemacrophagesiiitheinductionofvesicleformationbynucleosidesandnucleotides |