Treatment of multiple sclerosis is effective when anti-inflammatory, neuroprotective and regenerative strategies are combined.
Dendropanax morbiferus
(
DM
) has anti-inflammatory, anti-oxidative properties, which may be beneficial for multiple sclerosis. However, there have been no reports on the effects of
DM
on myelination, which is critical for regenerative processes. To know whether
DM
benefits myelination, we checked differentiation and myelination of oligodendrocytes (OLs) in various primary culture systems treated with
DM
leaf EtOH extracts or control.
DM
extracts increased the OL membrane size in the mixed glial and pure OL precursor cell (OPC) cultures and changed OL-lineage gene expression patterns in the OPC cultures. Western blot analysis of
DM
-treated OPC cultures showed upregulation of MBP and phosphorylation of ERK1/2. In myelinating cocultures,
DM
extracts enhanced OL differentiation, followed by increased axonal contacts and myelin gene upregulations such as Myrf, CNP and PLP. Phytochemical analysis by LC-MS/MS identified multiple components from
DM
extracts, containing bioactive molecules such as quercetin, cannabidiol, etc. Our results suggest
DM
extracts enhance OL differentiation, followed by an increase in membrane size and axonal contacts, thereby indicating enhanced myelination. In addition, we found that
DM
extracts contain multiple bioactive components, warranting further studies in relation to finding effective components for enhancing myelination.