Turnover and release of cell surface Ig and secretion of total intracellular Ig has been studied in small lymphocytes from normal mouse spleen. The major findings to emerge are: (a) small lymphocytes secrete 8S IgM and IgG. A small portion of the 8S IgM, but virtually none of the IgG appears to have a cell surface phase. (b) Cell surface IgM is actively turned over with a half-life of 6–8 hr, and turnover can be accounted for by release into the incubation medium. Release is temperature dependent. (c) Released cell surface Ig is noncovalently bound to a fragment of plasma membrane. (d) H-2 antigens are not released during short-term incubation. Based on the above findings, we propose a model for the transport and release of both cell surface and conventionally secreted Ig.
Article|
October 01 1972
CELL SURFACE IMMUNOGLOBULIN : V. RELEASE FROM MURINE SPLENIC LYMPHOCYTES
Ellen S. Vitetta,
Ellen S. Vitetta
From Irvington House Institute and the Department of Medicine, New York University School of Medicine, New York 10016
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Jonathan W. Uhr
Jonathan W. Uhr
From Irvington House Institute and the Department of Medicine, New York University School of Medicine, New York 10016
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Ellen S. Vitetta
From Irvington House Institute and the Department of Medicine, New York University School of Medicine, New York 10016
Jonathan W. Uhr
From Irvington House Institute and the Department of Medicine, New York University School of Medicine, New York 10016
Received:
May 04 1972
Online ISSN: 1540-9538
Print ISSN: 0022-1007
Copyright © 1972 by The Rockefeller University Press
1972
J Exp Med (1972) 136 (4): 676–696.
Article history
Received:
May 04 1972
Citation
Ellen S. Vitetta, Jonathan W. Uhr; CELL SURFACE IMMUNOGLOBULIN : V. RELEASE FROM MURINE SPLENIC LYMPHOCYTES . J Exp Med 1 October 1972; 136 (4): 676–696. doi: https://doi.org/10.1084/jem.136.4.676
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