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Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
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Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
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Learning is the process of acquiring knowledge or skills through practice or experience, leading to long-lasting behavioral changes. This acquisition occurs through interaction with the environment and requires practice or experience. For instance, mastering a skill such as surfing requires considerable practice and experience, highlighting the essential role of repeated interactions with the environment in learning.
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Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
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Aversive Associative Learning and Memory Formation by Pairing Two Chemicals in Caenorhabditis elegans
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Innate (learned) memory.

Burcu Al1, Tsz K Suen1, Katarzyna Placek1

  • 1Department of Molecular Immunology and Cell Biology, Life and Medical Sciences Institute, University of Bonn.

The Journal of Allergy and Clinical Immunology
|June 29, 2023
PubMed
Summary
This summary is machine-generated.

Innate immune cells, like adaptive immune cells, can develop trained immunity, a form of immune memory. This review explores the cells, mechanisms, and therapeutic potential of innate immune memory.

Keywords:
Trained immunitycellular signalingepigeneticsimmune memorymetabolism

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Area of Science:

  • Immunology
  • Cell Biology
  • Systems Biology

Background:

  • Adaptive immunity is well-known for its memory capabilities.
  • Emerging evidence shows innate immune cells also possess memory functions.
  • This phenomenon is termed trained immunity or innate immune memory.

Purpose of the Study:

  • To review cell types involved in trained immunity.
  • To elucidate the molecular mechanisms of innate immune memory.
  • To explore health implications and therapeutic strategies.

Main Methods:

  • Literature review of studies on trained immunity.
  • Analysis of immune and nonimmune cell involvement.
  • Examination of intracellular signaling, metabolic, and epigenetic pathways.

Main Results:

  • Both innate and adaptive immune cells can develop immune memory.
  • Trained immunity involves rapid, potent nonspecific responses.
  • Specific cell types and molecular pathways underlying trained immunity are identified.

Conclusions:

  • Trained immunity represents a significant immunological concept.
  • Understanding these mechanisms opens avenues for novel therapies.
  • Harnessing innate immune memory holds therapeutic promise for various diseases.