Forgotten memory storage and retrieval in Drosophila

Chih-Ming Wang, Chun-Yuan Wu, Chen-En Lin, Ming-Chi Hsu, Jing-Chun Lin, Chuan-Chin Huang, Ting-Yu Lien, Hsin-Kai Lin, Ting-Wei Chang and Hsueh-Cheng Chiang ()
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Chih-Ming Wang: National Cheng Kung University
Chun-Yuan Wu: National Cheng Kung University
Chen-En Lin: National Cheng-Kung University
Ming-Chi Hsu: National Cheng Kung University
Jing-Chun Lin: National Cheng-Kung University
Chuan-Chin Huang: National Cheng Kung University
Ting-Yu Lien: National Cheng-Kung University
Hsin-Kai Lin: National Cheng-Kung University
Ting-Wei Chang: National Cheng Kung University
Hsueh-Cheng Chiang: National Cheng Kung University

Nature Communications, 2023, vol. 14, issue 1, 1-17

Abstract: Abstract Inaccessibility of stored memory in ensemble cells through the forgetting process causes animals to be unable to respond to natural recalling cues. While accumulating evidence has demonstrated that reactivating memory-stored cells can switch cells from an inaccessible state to an accessible form and lead to recall of previously learned information, the underlying cellular and molecular mechanisms remain elusive. The current study used Drosophila as a model to demonstrate that the memory of one-trial aversive olfactory conditioning, although inaccessible within a few hours after learning, is stored in KCαβ and retrievable after mild retraining. One-trial aversive conditioning triggers protein synthesis to form a long-lasting cellular memory trace, approximately 20 days, via creb in KCαβ, and a transient cellular memory trace, approximately one day, via orb in MBON-α3. PPL1-α3 negatively regulates forgotten one-trial conditioning memory retrieval. The current study demonstrated that KCαβ, PPL1-α3, and MBON-α3 collaboratively regulate the formation of forgotten one-cycle aversive conditioning memory formation and retrieval.

Date: 2023
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DOI: 10.1038/s41467-023-42753-x

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