A critical period for macromolecular synthesis in long-term heterosynaptic facilitation in Aplysia

P. G. Montarolo, Philip Goelet, V. F. Castellucci, J. Morgan, E. R. Kandel, S. Schacher

Research output: Contribution to journalArticle

Abstract

Both long-term and short-term sensitization of the gill and siphon withdrawal reflex in Aplysia involve facilitation of the monosynaptic connections between the sensory and motor neurons. To analyze the relationship between these two forms of synaptic facilitation at the cellular and molecular level, this monosynaptic sensorimotor component of the gill-withdrawal reflex of Aplysia can be reconstituted in dissociated cell culture. Whereas one brief application of 1 μM serotonin produced short-term facilitation in the sensorimotor connection that lasted minutes, five applications over 1.5 hours resulted in long-term facilitation that lasted more that 24 hours. Inhibitors of protein synthesis or RNA synthesis selectively blocked long-term facilitation, but not short-term facilitation, indicating that long-term facilitation requires the expression of gene products not essential for short-term facilitation. Moreover, the inhibitors only blocked long-term facilitation when given during the serotonin applications; the inhibitors did not block the facilitation when given either before or after serotonin application. These results parallel those for behavioral performance in vertebrates and indicate that the critical time window characteristic of the requirement for macromolecular synthesis in long-term heterosynaptic facilitation is not a property of complex circuitry, but an intrinsic characteristic of specific nerve cells and synaptic connections involved in the long-term storage of information.

Original languageEnglish (US)
Pages (from-to)1249-1254
Number of pages6
JournalScience
Volume234
Issue number4781
DOIs
StatePublished - 1986
Externally publishedYes

Fingerprint

Aplysia
Serotonin
Reflex
Protein Synthesis Inhibitors
Information Storage and Retrieval
Motor Neurons
Sensory Receptor Cells
Vertebrates
Cell Culture Techniques
RNA
Gene Expression
Neurons
Critical Period (Psychology)

ASJC Scopus subject areas

  • General

Cite this

Montarolo, P. G., Goelet, P., Castellucci, V. F., Morgan, J., Kandel, E. R., & Schacher, S. (1986). A critical period for macromolecular synthesis in long-term heterosynaptic facilitation in Aplysia. Science, 234(4781), 1249-1254. https://doi.org/10.1126/science.3775383

A critical period for macromolecular synthesis in long-term heterosynaptic facilitation in Aplysia. / Montarolo, P. G.; Goelet, Philip; Castellucci, V. F.; Morgan, J.; Kandel, E. R.; Schacher, S.

In: Science, Vol. 234, No. 4781, 1986, p. 1249-1254.

Research output: Contribution to journalArticle

Montarolo, PG, Goelet, P, Castellucci, VF, Morgan, J, Kandel, ER & Schacher, S 1986, 'A critical period for macromolecular synthesis in long-term heterosynaptic facilitation in Aplysia', Science, vol. 234, no. 4781, pp. 1249-1254. https://doi.org/10.1126/science.3775383
Montarolo, P. G. ; Goelet, Philip ; Castellucci, V. F. ; Morgan, J. ; Kandel, E. R. ; Schacher, S. / A critical period for macromolecular synthesis in long-term heterosynaptic facilitation in Aplysia. In: Science. 1986 ; Vol. 234, No. 4781. pp. 1249-1254.
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