Synopses & Reviews
This book contains concise reviews of recent advances in the field of immunological memory. The approach taken provides short, concise introductions followed by detailed discussion of recent experimental data. The contributions cover most aspects of immunological memory, however, the following are of particular interest: 1) description of new markers for memory T cells and definition of functional subsets; 2) generation of memory cells; 3) the maintainance of memory over long periods of time and whether the persistence of antigens is important.
Synopsis
Although immunologists know rather a lot about the manif- estation of immunological memory, an understanding of the mechanism of memory at cellular and biochemical levels eludes us. Indeed, as we shall see, it is not even clear which of the several models used to explain the working of memory approximates to the truth. It is in order to report on approaches to this problem and on recent experimental advances in the field of memory cells that this volume has been put together. In the past 4-5 years cell surface molecules that may enable us to define memory Band T cells have been identified. It may now be possible to ask how memory cells are generated and to define what signals are required during or after antigenic encounter for a cell to enter the memory cell pool rather than to terminally differentiate into an effector cell. The transition from virgin cell to memory cell is clearly accompanied by several biochemical changes. For B cells, isotype switching and somatic mutations (leading to affinity maturation) are well-defined phenomena, although the molecular mechanisms remain mys- terious. Both have received attention in many excellent reviews of late and so are not considered in detail in this book. Neither switching nor somatic mutation is a feature of peripheral T-cell maturation; biochemical differences between virgin and mem- ory T cells may only relate to differing activation requirements and possibly changes in the expression of accessory molecules.
Synopsis
A subject in which there has been a resurgence of interest and activity over the past few years.