We isolated germinal center B cells by exploiting their high affinity for peanut agglutinin (PNA). The PNA+ and PNA- B cells, fractionated by panning on PNA-coated petri dishes, were examined for their ability to transfer memory responses to irradiated recipients at various times after priming. With such fractionated B cells from lymph nodes taken at the peak of germinal center formation, the largest response was obtained in recipients of the PNA+ B cell population. At 4 to 5 wk after priming, and 10 days after challenge with an unrelated antigen, memory responses were approximately equal in recipients of PNA+ or PNA- B cells. At 14 wk after priming, memory responses were found only in recipients of the PNA- B cell population. Memory B cells from the spleen, taken from mice primed in the footpad 8 wk earlier, were also PNA-. Finally, we show that boosting with a TNP-conjugate in the footpad, 6 mo after priming in the same footpad, induced the reappearance of marked memory responsiveness in the PNA+ B cell fraction of the draining node.
Relationship of germinal centers in lymphoid tissue to immunologic memory. VI. Transfer of B cell memory with lymph node cells fractionated according to their receptors for peanut agglutinin.
R. Coico,B. Bhogal,G. Thorbecke
Published 1983 in Journal of Immunology
ABSTRACT
PUBLICATION RECORD
- Publication year
1983
- Venue
Journal of Immunology
- Publication date
1983-11-01
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- germinal center b cells
B lymphocytes located in germinal centers and isolated from lymphoid tissue in this work.
Aliases: GC B cells
- irradiated recipients
Recipient animals given irradiation so that transferred lymph node cells could be tested for memory transfer.
Aliases: irradiated mice
- memory b cells
B cells responsible for transferring immunologic memory responses to recipient animals in the assay.
Aliases: B cell memory
- peanut agglutinin (pna)
A lectin used here as the basis for separating B-cell fractions by receptor binding.
Aliases: PNA
- pna+ b cells
The B-cell fraction that binds peanut agglutinin and was separated by panning on PNA-coated dishes.
Aliases: PNA positive B cells, PNA-positive B cells
- pna- b cells
The B-cell fraction that does not bind peanut agglutinin and was analyzed alongside the PNA+ fraction.
Aliases: PNA negative B cells, PNA-negative B cells
- tnp-conjugate
A trinitrophenyl-containing antigen conjugate used for boosting primed mice in the footpad.
Aliases: TNP conjugate
REFERENCES
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