Abstract:
:A solubilized sheep red blood cell (SRBC) antigen (supernatant fraction obtained by centrifuging 10(7)-2 x 108 sonicated SRBC at 6 x 10(4) g for 30 min [Sup-SRBC]), whose ability to inhibit anti-SRBC plaque formation was 70% of that of the original sonicated SRBC, was unable to elicit a detectable antibody response in either unprimed or SRBC-primed mice. However, Sup-SRBC as well as intact SRBC antigens generated memory for the secondary response, which was transferable to irradiated syngeneic recipients by injection of immune spleen cells. The memory generated by Sup-SRBC involved helper memory for anti-trinitrophenyl group (TNP) response to challenge with TNP-conjugated SRBC. Increase in the helper T cell memory in the spleens of Sup-SRBC-primed mice was also demonstrated by an in vitro culture experiment and by an adoptive cell transfer experiment. In contrast, no detectable B cell memory was generated by Sup-SRBC. Repeated stimulation with Sup-SRBC never induced significant antibody response but reduced the level of memory. A single injection of a low dose (10(6)) of SRBC also failed to induce a definite primary antibody response generating memory for the secondary response. However, repeated stimulation with this dose of SRBC induced a high antibody response and generated good memory. From these results it is suggested that the intact structure of SRBC is required for the activation of B cells, but is not necessary for the stimulation of T cells.
journal_name
Microbiol Immunoljournal_title
Microbiology and immunologyauthors
Nagase F,Nakashima I,Nagase N,Kato Ndoi
10.1111/j.1348-0421.1982.tb00163.xsubject
Has Abstractpub_date
1982-01-01 00:00:00pages
139-51issue
2eissn
0385-5600issn
1348-0421journal_volume
26pub_type
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