TY - JOUR
T1 - The isotype cycle
T2 - Successive changes in surface immunoglobulin classes expressed by the antigen-binding B-cell population during the primary in vivo immune response
AU - Kanowith-Klein, Susan
AU - Vitetta, Ellen S.
AU - Ashman, Robert F.
N1 - Funding Information:
’ This work was supported by Grant T32-CA 90120 (National Cancer Institute, DHEW) to S.K.-K, by a fellowship in Cancer Immunology from Cancer Research Institute (New York) to S.K.-K, by Grants CA 12800 (National Cancer Institute, DHEW) and AI 14922 (National Institute of Allergy and Infectious Diseases, DHEW) to RFA, and Grants AI 11851 and AI 12789 to E.S.V. Biomathematical support was provided by Center for Interdisciplinary Research in Immunological Diseases Grant AI 15332 (NIAID, DHEW).
PY - 1981/8
Y1 - 1981/8
N2 - Using the antigen-binding inhibition method, capable of revealing any combination of three surface Ig (sIg) isotypes on a population of antigen-binding cells (ABC) (S. Kanowith-Klein, E. S. Vitetta E.L. Korn, and R.F. Ashman, J. Immunol. 122, 2349, 1979) we have defined the sequence of antigen-induced changes in the expression of sIgM, sIgD, and sIgG on the sheep erythrocyte (SRC) antigen-binding B-cell population (SRC-ABC) throughout the in vivo primary immune response. The majority of nonimmune B-ABC simultaneously expressed M and D (M+D+G-). By Day 3 sIgG had appeared, mainly on cells already bearing sIgM and sIgD. By Day 5, other G+ populations appeared: M+D-G+ and M-D-G+. By Day 12, M+D-G+ ABC declined, while M-D-G+ ABC remained predominant for another month. By 6 months, the sIg phenotypes on the ABC had returned to the original nonimmune pattern, mainly M+D+G-; but the absolute number of 6-month immune ABC was four times greater than that of nonimmune ABC. This cyclical change in sIg expression was confined to the B-cell population expressing receptors specific for the immunizing antigen, and affected the large majority of such cells. Twelve days after immunization with SRC, ABC specific for a non-cross-reacting antigen still mainly expressed the nonimmune sIg phenotype, M+D+G-.
AB - Using the antigen-binding inhibition method, capable of revealing any combination of three surface Ig (sIg) isotypes on a population of antigen-binding cells (ABC) (S. Kanowith-Klein, E. S. Vitetta E.L. Korn, and R.F. Ashman, J. Immunol. 122, 2349, 1979) we have defined the sequence of antigen-induced changes in the expression of sIgM, sIgD, and sIgG on the sheep erythrocyte (SRC) antigen-binding B-cell population (SRC-ABC) throughout the in vivo primary immune response. The majority of nonimmune B-ABC simultaneously expressed M and D (M+D+G-). By Day 3 sIgG had appeared, mainly on cells already bearing sIgM and sIgD. By Day 5, other G+ populations appeared: M+D-G+ and M-D-G+. By Day 12, M+D-G+ ABC declined, while M-D-G+ ABC remained predominant for another month. By 6 months, the sIg phenotypes on the ABC had returned to the original nonimmune pattern, mainly M+D+G-; but the absolute number of 6-month immune ABC was four times greater than that of nonimmune ABC. This cyclical change in sIg expression was confined to the B-cell population expressing receptors specific for the immunizing antigen, and affected the large majority of such cells. Twelve days after immunization with SRC, ABC specific for a non-cross-reacting antigen still mainly expressed the nonimmune sIg phenotype, M+D+G-.
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U2 - 10.1016/0008-8749(81)90338-5
DO - 10.1016/0008-8749(81)90338-5
M3 - Article
C2 - 6169454
AN - SCOPUS:0019451846
SN - 0008-8749
VL - 62
SP - 377
EP - 384
JO - Cellular Immunology
JF - Cellular Immunology
IS - 2
ER -