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Nobel Prize in Physiology or Medicine 2000
Year of election: | 1989 |
Section: | Neurosciences |
City: | New York, NY |
Country: | USA |
Research Priorities: signal transmission in the nervous system, memory, learning capacity, synapse function, cAMP (cyclic adenosine monophosphate), CREB (cAMP response element binding protein), CPEB (cytoplasmic polyadenylation binding protein)
Eric R. Kandel is an Austrian-US neuroscientist. In 2000, he was awarded the Nobel Prize in Physiology or Medicine together with Arvid Carlsson and Paul Greengard. The Nobel Committee recognised the discoveries of the three scientists on “signal transmission in the nervous system”. Throughout his research life, Eric Richard Kandel pursued the question of how memory and recollection function.
Eric Kandel's interest focused on the biochemical processes during learning and storing memories. He explored the basics with traditional behavioural experiments on the nervous system of a marine snail (Aplysia). Further experiments showed different reactions in the nerve cells depending on the type of stimulus. After superficial stimuli, only short-term memory was affected; the phosphorylation of proteins in the synapses led to a short-term increase in the release of neurotransmitters. This is not sufficient to create a long-term memory; the information must be expressed in the formation of new proteins. Only then can the form and function of the synapse change permanently, and the brain acquires a new structure.
In animal experiments, Eric Kandel and his research group identified proteins involved in converting short-term memory into long-term memory and discovered the transcription factor CREB (cAMP response element binding protein). The activation of CREB led to increased synapses formation. An inhibition irritated the animals so that they could no longer find their food. Apparently, information was no longer stored long-term. The CREB protein was identified as one of the main switches involved in creating long-term memories.
Eric Kandel's assumption that certain learning mechanisms are evident in all living beings has proven correct. Now the researcher is working on the question as to which changes lead to memory loss in advanced age. Eric Kandel's interest is focused on prions, a group of Janus-faced proteins that, in addition to their natural shape, can also adopt a misfolded structure and then impose their misfolding onto other properly folded copies. This process resembles an infection, but the infectious agent is neither bacteria nor viruses but proteins. In collaboration with Joseph B. Rayman, Eric Kandel has pursued the question of what role prions play not only in infectious degenerative diseases, such as mad cow disease (BSE) and Creutzfeldt-Jakob diseasa, but also in non-communicable neurological disorders, such as Alzheimer's disease or Huntington's disease.