Primary Motoneuron Enrichment
Primary Motoneuron Enrichment - Related Videos
03:21
Trans-Spinal Direct Current Stimulation of a Rat's Spinal Motoneuron
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2025
This video describes the in vivo intracellular recording of rat motoneurons under trans-spinal direct current stimulation. The protocol describes how to measure membrane properties and record the rhythmic firing of motoneurons before, during, and after anodal or cathodal polarization of the spinal cord.
07:43
Modeling Charcot-Marie-Tooth Disease In Vitro by Transfecting Mouse Primary Motoneurons
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Cited by 4 •
2019
The goal of this technique is to prepare a highly enriched culture of primary motoneurons (MNs) from murine spinal cord. To evaluate the consequences of mutations causing MN diseases, we describe here the isolation of these isolated MNs and their transfection by magnetofection.
01:34
Environmental Enrichment for Rodents
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2026
All animal procedures described here must be conducted in accordance with institutional animal ethics guidelines and approved by IACUC. All procedures must follow the principles of the 3Rs—Replacement, Reduction, and Refinement—and must be performed by trained personnel. Environmental enrichment involves objects and practices that encourage natural behaviors, improve psychological well-being, and promote better welfare in laboratory rodents. Environmental enrichment should be tailored to the...
09:25
Lectin-based Isolation and Culture of Mouse Embryonic Motoneurons
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Cited by 21 •
2011
An alternative way of isolating mouse embryonic motoneurons from the spinal cord is described. The method takes into account the fact that lectin can bind to the low affinity nerve growth factor receptor p75NTR. This lectin-based preplating allows a purification similar to that with a specific antibody against the p75NTR.
01:27
Environmental Enrichment in Rabbits and Pigs
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2026
All animal procedures described here must be conducted in accordance with institutional animal ethics guidelines and approved by IACUC. All procedures must follow the principles of the 3Rs—Replacement, Reduction, and Refinement—and must be performed by trained personnel. Importance of Environmental Enrichment Environmental enrichment is a fundamental component of laboratory animal care and welfare. It provides animals with opportunities to express species-specific behaviors, reduces stress, and...
FAQs
Primary motoneuron enrichment can use three distinct selection principles: selective adhesion, immuno-based capture, and differential survival. Selective adhesion separates cells according to how they attach, whereas immuno-based capture uses recognition of motoneuron-associated features. Differential survival relies on controlled culture conditions that favor motoneuron persistence relative to other cells. These mechanisms provide alternative routes to a more defined culture.
Controlled culture conditions are particularly important when differential survival provides the selection mechanism. Rather than physically removing every unwanted cell, the culture environment produces different survival outcomes among cell types. This makes the final cellular composition dependent on experimental conditions. For neuroscience studies, that dependence should be considered when interpreting development, axon growth, synaptic function, or injury responses.
Compared with an unsorted culture derived from neural tissue, an enriched preparation provides a more defined motoneuron-focused model. A higher proportion of motoneurons makes observations about their development, axon growth, synaptic function, or vulnerability easier to relate to that cell population. The approach reduces the interpretive challenge posed by mixed neural cell types without implying that every non-motoneuron has been removed.
A basic workflow starts by dissociating spinal cord tissue to generate a cell preparation. The researcher then applies a selection route, such as selective adhesion, immuno-based capture, or differential survival under controlled culture conditions. The resulting culture serves as a more defined motoneuron model for downstream experiments. The chosen route determines how enrichment is achieved and should match the experimental question.
Enriched cultures support studies of several motoneuron-centered processes, including neuronal development, axon growth, synaptic function, and vulnerability to injury or neurotoxic compounds. These applications use the increased representation of motoneurons to focus experiments on properties or responses relevant to that population. The model can therefore connect basic cellular questions with investigations of damage and neuronal resilience.
In amyotrophic lateral sclerosis research, enriched motoneuron cultures provide an experimentally manageable system for examining motoneuron vulnerability. They can also support evaluation of potential neuroprotective or regenerative therapies by examining how cultured cells respond in experimental settings. This role links cell-isolation methodology with disease-oriented neuroscience while keeping the model focused enough to study motoneuron-related outcomes.