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Abstract Title:

Sulforaphane Upregulates the Heat Shock Protein Co-Chaperone CHIP and Clears Amyloid-β and Tau in a Mouse Model of Alzheimer's Disease.

Abstract Source:

Mol Nutr Food Res. 2018 Apr 30:e1800240. Epub 2018 Apr 30. PMID: 29714053

Abstract Author(s):

Siyoung Lee, Bo-Ryoung Choi, Jisung Kim, Frank M LaFerla, Jung Han Yoon Park, Jung-Soo Han, Ki Won Lee, Jiyoung Kim

Article Affiliation:

Siyoung Lee

Abstract:

SCOPE: Sulforaphane is an herbal isothiocyanate enriched in cruciferous vegetables. Here, the authors investigate whether sulforaphane modulates the production of amyloid-β (Aβ) and tau, the two main pathological factors in Alzheimer's disease (AD).

METHODS AND RESULTS: A triple transgenic mouse model of AD (3× Tg-AD) is used to study the effect of sulforaphane. Oral gavage of sulforaphane reduces protein levels of monomeric and polymeric forms of Aβ as well as tau and phosphorylated tau in 3 × Tg-AD mice. However, sulforaphane treatment do not affect mRNA expression of amyloid precursor protein or tau. As previous studies show that Aβ and tau metabolism are influenced by a heat shock protein (HSP) co-chaperone, C-terminus of HSP70-interacting protein (CHIP), the authors examine whether sulforaphane can modulate CHIP. The authors find that sulforaphane treatment increase levels of CHIP and HSP70. Furthermore, observations of CHIP-deficient primary neurons derived from 3 × Tg-AD mice suggest that sulforaphane treatment increase CHIP level and clear the accumulation of Aβ and tau. Finally, sulforaphane ameliorated memory deficits in 3 × Tg-AD mice as reveal by novel object/location recognition tests and contextual fear conditioning tests.

CONCLUSION: These results demonstrate that sulforaphane treatment upregulates CHIP and has the potential to decrease the accumulation of Aβ and tau in patients with AD.

Study Type : Transgenic Animal Study

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Sayer Ji
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