Sulforaphane Activates a lysosome-dependent transcriptional program to mitigate oxidative stress.
Level 5 - mechanism / opinion, no new human data
Bench mechanistic laboratory research with no human participants
PubMed 32138578 · doi:10.1080/15548627.2020.1739442
What was done
Mechanistic in vitro laboratory study investigating how sulforaphane (SFN) mitigates oxidative stress through autophagy and lysosomal pathways. The researchers examined the effects of SFN on transcription factor EB (TFEB) nuclear translocation, its interaction with NFE2L2/NRF2 signaling, and its dependence on Ca2+ and MTOR pathways during acute and chronic oxidative stress.
What was found
The abstract reports no numerical values, concentrations, or statistical metrics. SFN induced TFEB nuclear translocation via a Ca2+-dependent, MTOR-independent mechanism involving a moderate increase in reactive oxygen species. Activated TFEB subsequently increased the expression of autophagosome and lysosome biogenesis genes, and TFEB was required for SFN-mediated protection against oxidative stress.
Why it matters
It identifies TFEB activation as a key mechanistic pathway through which sulforaphane promotes lysosomal and autophagic clearance to counteract oxidative damage beyond canonical NRF2 signaling.
Limits
This is strictly non-human bench laboratory research. The abstract does not provide specific model systems, cell lines, sulforaphane doses, effect sizes, or quantitative data.
Cited by
- supports Sulforaphane activates the lysosomal receptor mucolipin 1 (TRPML1) through a redox-sensitive cysteine, releasing calcium and triggering lysosomal exocytosis via a synaptotagmin complex and LAMP-2.