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자료유형
학술저널
저자정보
Chun, Yoon Sun (Department of Physiology, Sungkyunkwan University School of Medicine) Kwon, Oh-Hoon (Department of Physiology, Sungkyunkwan University School of Medicine) Oh, Hyun Geun (Department of Physiology, Sungkyunkwan University School of Medicine) Cho, Yoon Young (Department of Physiology, Sungkyunkwan University School of Medicine) Yang, Hyun Ok (Natural Products Research Center, Korea Institute of Science and Technology) Chung, Sungkwon (Department of Physiology, Sungkyunkwan University School of Medicine)
저널정보
한국응용약물학회 Biomolecules & Therapeutics(구 응용약물학회지) Biomolecules & therapeutics 제27권 제3호
발행연도
2019.1
수록면
276 - 282 (7page)

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${\beta}$-amyloid precursor protein (APP) can be cleaved by ${\alpha}$-, and ${\gamma}$-secretase at plasma membrane producing soluble ectodomain fragment ($sAPP{\alpha}$). Alternatively, following endocytosis, APP is cleaved by ${\beta}$-, and ${\gamma}$-secretase at early endosomes generating ${\beta}$-amyloid ($A{\beta}$), the main culprit in Alzheimer's disease (AD). Thus, APP endocytosis is critical for $A{\beta}$ production. Recently, we reported that Monsonia angustifolia, the indigenous vegetables consumed in Tanzania, improved cognitive function and decreased $A{\beta}$ production. In this study, we examined the underlying mechanism of justicidin A, the active compound of M. angustifolia, on $A{\beta}$ production. We found that justicidin A reduced endocytosis of APP, increasing $sAPP{\alpha}$ level, while decreasing $A{\beta}$ level in HeLa cells overexpressing human APP with the Swedish mutation. The effect of justicidin A on $A{\beta}$ production was blocked by endocytosis inhibitors, indicating that the decreased APP endocytosis by justicidin A is the underlying mechanism. Thus, justicidin A, the active compound of M. angustifolia, may be a novel agent for AD treatment.

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