Characterization of lipid droplets from a Taxus media cell suspension and their potential involvement in trafficking and secretion of paclitaxel.
Abdulsamie HananoEdgar Perez-MatasMouhnad ShabanRosa M CusidoDenis J MurphyPublished in: Plant cell reports (2022)
]) in the aqueous solution was partitioned into the isolated LDs. Furthermore, silencing of CLO-encoding genes in the T. media cells led to a net decrease in the number and size of LDs. This coincided with a significant reduction in expression levels of TXS, DBAT and DBTNBT, key genes in the PTX biosynthesis pathway. Subsequently, the biosynthesis of PTX was declined in cell culture. In contrast, treatment of cells with 13-hydroperoxide C18:3, a substrate of the peroxygenase activity, induced the expression of CLOs, and, therefore, the accumulation of cellular LDs in the T. media cells cultures, thus increasing the PTX secretion. The accumulation of stable LDs is critically important for effective secretion of PTX. This is modulated by the expression of caleosins, a class of LD-associated proteins with a dual role conferring the structural stability of LDs as well as regulating lipidic bioactive metabolites via their enzymatic activity, thus enhancing the biosynthesis of PTX.
Keyphrases
- induced apoptosis
- poor prognosis
- cell cycle arrest
- genome wide
- magnetic resonance
- binding protein
- magnetic resonance imaging
- aqueous solution
- single cell
- ms ms
- gene expression
- computed tomography
- nitric oxide
- oxidative stress
- transcription factor
- endothelial cells
- high glucose
- bioinformatics analysis
- drug induced
- amino acid