Related Experiment Video

Updated: Nov 28, 2025

Preparation of Acute Hippocampal Slices from Rats and Transgenic Mice for the Study of Synaptic Alterations during Aging and Amyloid Pathology
14:57

Preparation of Acute Hippocampal Slices from Rats and Transgenic Mice for the Study of Synaptic Alterations during Aging and Amyloid Pathology

Published on: March 23, 2011

94.8K

Dual Role of an mps-2/KCNE-Dependent Pathway in Long-Term Memory and Age-Dependent Memory Decline

Bank G Fenyves1, Andreas Arnold2, Vaibhav G Gharat2

  • 1Transfaculty Research Platform Molecular and Cognitive Neurosciences, University of Basel, Birmannsgasse 8, 4055 Basel, Switzerland; Division of Molecular Neuroscience, Department of Psychology, University of Basel, Birmannsgasse 8, 4055 Basel, Switzerland; Department of Molecular Biology, Semmelweis University, Tűzoltó u. 37-47, 1094 Budapest, Hungary.

Current Biology : CB
|December 1, 2020
PubMed

Insights

The MPS-2 protein regulates long-term associative memory (LTAM) in C. elegans and prevents age-dependent memory decline by modulating potassium channels. This pathway is crucial for memory formation and healthy aging.

Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Neuronal plasticity underlies learning and memory.
  • Voltage-gated potassium (Kv) channels regulate neuronal excitability and may be involved in age-related memory dysfunction.
  • MinK-related peptides (MiRPs) modulate Kv channels, but their role in memory is unknown.

Purpose of the Study:

  • Investigate the role of MiRPs in long-term associative memory (LTAM) and age-dependent memory decline in C. elegans.
  • Identify the specific MiRP family member and its associated molecular pathways involved in memory regulation.
  • Elucidate the mechanisms by which MPS-2 influences neuronal function and memory across the lifespan.

Main Methods:

  • Utilized C. elegans as a model organism.
  • Conducted genetic screens and molecular analyses to identify the mps-2 gene and its regulatory elements.
  • Performed behavioral assays to assess LTAM and age-dependent memory.
  • Investigated gene expression patterns and protein interactions using transcriptional and post-transcriptional analysis.
  • Examined the functional impact of MPS-2 on specific potassium channels (KVS-3 and KVS-4).

Main Results:

  • Identified mps-2 as the sole MiRP family member in C. elegans regulating LTAM in AVA neurons.
  • Demonstrated that mps-2 plays a critical role in preventing age-dependent memory decline.
  • Showed that CRH-1/cyclic AMP (cAMP)-response-binding protein (CREB) upregulates mps-2 during LTAM in young worms.
  • Revealed that the transcription factor nhr-66 acts as an age-dependent repressor of mps-2 baseline expression.
  • Found that deleting nhr-66 or its binding site prevents age-dependent repression of mps-2 and subsequent memory loss.
  • Established that MPS-2 modulates Kv2.1/KVS-3 and Kv2.2/KVS-4 heteromeric potassium channels.

Conclusions:

  • The MPS-2/KVS-3/KVS-4 pathway is essential for LTAM in C. elegans.
  • MPS-2 is a key regulator of physiological age-dependent memory decline.
  • Understanding this pathway offers insights into conserved mechanisms of memory maintenance and aging.
Keywords:
Caenorhabditis elegansKCNEageingkvs-3kvs-4long-term memorymps-2nhr-66voltage-gated ion-channel

More Related Videos

Improved Preparation and Preservation of Hippocampal Mouse Slices for a Very Stable and Reproducible Recording of Long-term Potentiation09:39

Improved Preparation and Preservation of Hippocampal Mouse Slices for a Very Stable and Reproducible Recording of Long-term Potentiation

Published on: June 26, 2013

27.4K
Minimizing Hypoxia in Hippocampal Slices from Adult and Aging Mice08:58

Minimizing Hypoxia in Hippocampal Slices from Adult and Aging Mice

Published on: July 2, 2020

8.1K

Related Concept Videos

Long-term Depression01:03

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over...
2.8K
Long-term Depression01:05

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
32.5K
Role of Neurotransmitters in Memory01:23

Role of Neurotransmitters in Memory

Neurotransmitters are integral to the brain's communication system, enabling neurons to transmit signals across synapses. This chemical exchange underpins various cognitive functions, including memory processes. The role of neurotransmitters in memory is multifaceted, influencing the encoding, consolidation, and retrieval of memories through their action on different neural circuits.
 Glutamate and Synaptic Plasticity
Glutamate, the brain's main excitatory neurotransmitter, is...
2.1K
Role of Hippocampus in Memory01:19

Role of Hippocampus in Memory

The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
897
Role of Cerebellum and Prefrontal Cortex in Memory01:14

Role of Cerebellum and Prefrontal Cortex in Memory

The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
805
Long-term Potentiation01:35

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
57.3K