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A Manual Small Molecule Screen Approaching High-throughput Using Zebrafish Embryos
Published on: November 8, 2014
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Multilevel Screening Platform Utilizing Cellular and Zebrafish Models to Identify Short Peptides with High
Bing-Chang Lee1, Chun-Cheng Wang2, Shan-Pin Chen2
1Department of Life Science, Fu Jen Catholic University, New Taipei City 242, Taiwan.
International Journal of Molecular Sciences
|January 10, 2026
Summary
Researchers identified a novel peptide, M039, using zebrafish screening to treat Amyotrophic Lateral Sclerosis (ALS). This peptide enhances motor neuron (MN) growth and function, showing promise as a cost-effective neurotherapeutic strategy.
Area of Science:
- Neuroscience
- Genetics
- Pharmacology
Background:
- Amyotrophic Lateral Sclerosis (ALS) is a motor neuron (MN) disease with limited treatment options.
- Phosphoglycerate Kinase 1 (Pgk1) and its interacting receptor Eno2 show potential for improving MN growth.
- A short peptide segment (M08) of Pgk1 was identified as crucial for Eno2 interaction.
Purpose of the Study:
- To develop a cost-effective zebrafish screening platform for identifying neurotrophic compounds.
- To find a superior neurotrophic peptide compared to M08 for potential ALS therapeutics.
- To validate the efficacy of identified peptides in cellular and disease models.
Main Methods:
- Established a zebrafish phenotypic screening platform for motor neuron (MN) development.
- Synthesized and screened 17 mutants of the Pgk1-derived M08 peptide.
- Administered lead peptide M039 to C9ORF72-knockdown ALS-like zebrafish embryos.
- Conducted secondary screening using a cellular model (NSC34 cells) under ALS-like conditions.
Main Results:
- Zebrafish embryos injected with M08 showed increased branched caudal primary MNs (CaPMNs).
- Peptide M039 significantly outperformed M08, increasing CaPMNs to 74.54%.
- M039 improved axonal growth and swimming ability in ALS-like zebrafish models.
- In cellular models, M039 enhanced neurite outgrowth and reduced p-Cofilin.
Conclusions:
- Zebrafish-based screening is a feasible and cost-effective strategy for discovering neuroprotective peptides.
- The mutated peptide M039 demonstrates significant neurotrophic potential for ALS therapeutics.
- M039 shows promise for improving motor neuron health and function in neurodegenerative conditions.
