L1 Regulates Glycosylation and Affects Neurite Growth and Cell Survival
Author Information
Author(s): Li Ya-li, Wu Guang-zhi, Dawe Gavin S., Zeng Li, Cui Shu-sen, Loers Gabriele, Tilling Thomas, Sun Li, Schachner Melitta, Xiao Zhi-Cheng
Primary Institution: The University of Hong Kong
Hypothesis
L1 might modulate specific glycosylation patterns at neuronal cell surfaces.
Conclusion
L1 regulates neuronal surface sialylation and fucosylation, which in turn modulates neurite outgrowth, cell survival, and migration.
Supporting Evidence
- L1 antibody treatment increased sialylation and fucosylation in neurons.
- Neurite outgrowth was enhanced in L1+/y neurons but not in L1−/y neurons.
- Knockdown of FUT9 and ST6Gal1 blocked L1-induced neurite outgrowth.
- PLCγ inhibitors reduced the effects of L1 on neurite outgrowth and cell survival.
Takeaway
L1 helps neurons grow and survive by changing the sugars on their surface, which helps them communicate better.
Methodology
The study used flow cytometry to analyze carbohydrate surface markers and assessed neurite outgrowth, cell migration, and survival in neurons treated with L1 antibodies.
Participant Demographics
Cerebellar granule neurons isolated from 6- to 8-day-old mice.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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