ArticleJournal of ginseng research2025
Korean Red Ginseng-induced astrocytic HIF-1α: A key regulator of neuroglobin derived from neural stem cell differentiation in physiologic retina and brain.
Article in Journal of ginseng research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Therapeutic potential of ginseng and ginsenosides on muscle wasting disorders: Cachexia, sarcopenia, anorexia, and aging.Journal of ginseng research · 2026Review
- Review
- HIF-1α in ischemic stroke: context-dependent roles in ferroptosis and neurovascular repair.Frontiers in neurology · 2026Review
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9 authors.
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Abstract
Background: Neuroglobin (Ngb) and growth-associated protein (GAP) 43 in neurons are associated with axonal regeneration. Korean Red Ginseng Extract (KRGE) enhances glial fibrillary acidic protein (GFAP)-positive astrocytes and hypoxia-inducible factor-1α (HIF-1α) protein activation in normoxic astrocytes. However, crosstalk between neural stem cell (NSC) differentiation and astrocytic HIF-1α in the KRGE-treated normoxic brain and retina remains unclear. We investigated whether KRGE-treated astrocytic HIF-1α can enhance NSC differentiation and increase the mature neurons expressing Ngb and GAP43. Methods: Mature neuronal markers such as neuronal nuclei (NeuN) or microtubule-associated protein 2 (MAP2) were tested with Ngb in the mouse brain or retinal tissues post-KRGE administration. Direct KRGE treatment of NSCs or astrocytes was evaluated for Ngb levels. The KRGE-treated astrocyte conditioned media (ACM) were transferred to NSCs and HIF-1α levels were reduced using small interfering RNA transfection (si-HIF-1α) in astrocytes. si-HIF-1α-ACM with KRGE was tested for NSC differentiation. Results: KRGE-administered mice showed significantly enhanced co-expression of Ngb with NeuN in the brain and MAP2 in the retina, along with the NSC marker Nestin, than water-administered mice. The KRGE treatment did not increase Ngb levels in NSCs, but stimulated astrocytes to secrete factors affecting NSCs' differentiate into mature neurons and astrocytes. The KRGE-treated mouse retinas showed GFAP- and HIF-1α double-positive cells. Co-treatment with si-HIF-1α-transfected KRGE-ACM blocked KRGE-ACM-induced NSC differentiation into astrocytes or Ngb-expressing neurons. Conclusion: KRGE stimulates astrocytic HIF-1α, which regulates NSC differentiation into mature neurons expressing Ngb, thereby promoting regeneration by enhancing NSC-astrocyte crosstalk in the physiological retina and brain.
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