Acute lipid droplet accumulation induced by the inhibition of the phospholipase DDHD2 does not affect the level, solubility, or phosphoserine-129 status of α-synuclein
Bolsinger M, Moors TE, Brontesi L, Nuber S, Dettmer U, Ramalingam N (2025)
Publication Type: Journal article
Publication year: 2025
Journal
Book Volume: 40
Pages Range: 111-
Journal Issue: 1
DOI: 10.1007/s11011-025-01534-9
Abstract
α-Synuclein (αS) is a 140 amino-acid neuronal protein highly enriched in presynaptic nerve terminals. Its progressive accumulation in Lewy bodies and neurites is the hallmark of Parkinson's disease (PD). A growing number of studies highlights a critical interplay between lipid metabolism and αS biology. Some of these works postulate a physical interaction between αS and lipid droplets (LDs), but further clarity is needed, not least because typically exogenous αS and/or heterologous systems have been studied. Here, we investigated the effects of acute LD accumulation on endogenous wild-type αS in primary rat cortical neurons. To induce robust LD accumulation within hours, we inhibited the neuronal triacylglycerol hydrolase DDHD2, a phospholipase, using the compound KLH45. KLH45-induced LD accumulation did not affect total levels, phosphoserine-129 status, or solubility of αS, and no co-localization between LDs and αS was observed under these conditions. These findings suggest that a "second hit" and/or a specific LD lipid composition may be necessary for lipid excess to affect αS homeostasis. Our work thus contributes to the debate on αS structure and lipid interaction.
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APA:
Bolsinger, M., Moors, T.E., Brontesi, L., Nuber, S., Dettmer, U., & Ramalingam, N. (2025). Acute lipid droplet accumulation induced by the inhibition of the phospholipase DDHD2 does not affect the level, solubility, or phosphoserine-129 status of α-synuclein. Metabolic Brain Disease, 40(1), 111-. https://doi.org/10.1007/s11011-025-01534-9
MLA:
Bolsinger, Magdalena, et al. "Acute lipid droplet accumulation induced by the inhibition of the phospholipase DDHD2 does not affect the level, solubility, or phosphoserine-129 status of α-synuclein." Metabolic Brain Disease 40.1 (2025): 111-.
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