Sulforaphane
Cruciferous ITC: NRF2/HDAC/DNMT ↑/↓, CSC ↓; strong PD in prostate/bladder/colorectal/breast.
Forms: Broccoli sprout extract capsules (20-50 mg SFN glucoraphanin + myrosinase) · Fresh sprouts (50-100 g/day)
Key Takeaway
Isothiocyanate from broccoli sprouts that activates NRF2 detox defenses, inhibits HDAC/DNMT to re-express tumor suppressors, and targets cancer stem-cell traits; multiple human trials show pharmacodynamic and clinical signals (esp. prostate/bladder).
Evidence at a glance
Phase II prostate PSA (TRAP); bladder recurrence HR 0.4; NRF2/HDAC PD robust; meta-CSC signals; ongoing CRC/breast trials.
How it may work
Sulforaphane (SFN) modifies Keap1 cysteines, stabilizing NRF2 and inducing HO-1, NQO1, GCLC, and phase II enzymes; it also inhibits class I/II HDACs and DNMTs, restoring p21 and other suppressors. SFN reduces CSC self-renewal (ALDH+/CD44+↓), impairs EMT, and sensitizes tumors to chemo/radiation. Clinical studies show PSA kinetics and tissue HDAC suppression in prostate, and reduced bladder cancer recurrence signals with broccoli sprout extracts.
Targets & pathways
Curated mechanistic targets reported for this agent — how it may act on cells, not proof of a clinical effect.
- NRF2↑Keap1 modification for detox induction
- HDAC↓Histone acetylation increase
- DNMT↓Promoter demethylation
- CSC↓ALDH/CD44 reduction
- EMT↓Self-renewal impairment
Often studied / combined with
Combinations reported in the literature, not a protocol or a recommendation.
- Cisplatin: Response improvement in bladder cancer.
- Curcumin: NRF2/HDAC co-inhibition in prostate.
- Resveratrol: CSC targeting in breast models.
- Quercetin: DNMT synergy in colorectal.
Overlapping mechanisms
- NRF2 ↑: Overlaps with DMF; monitor detox overload.
- HDAC ↓: Redundant with butyrate; acetylation ceiling.
Safety & interactions
Severity and how well-established each signal is are shown separately. Verify everything with your oncologist or pharmacist — absence here does not mean safe.
- TKIsMonitorLowTheoreticalCYP1A2 induction potential.
- chemoSynergizeLowTheoreticalSensitization without antagonism.
- CisplatinSynergizeLowTheoreticalEfficacy boost in bladder cancer.
Timing
- With-meal: Aids digestion.
- BID: Divided for steady NRF2.
References
- PMC10313060: Sulforaphane in prostate cancer trials
- 10.1186/s10020-024-00842-7: NRF2 activation mechanisms
- S2211715625000426: HDAC/DNMT inhibition
- DOI 10.3390/cancers15123185: CSC reduction in bladder cancer
- DOI 10.3390/nu12061619: Synergy with cisplatin in bladder models
- PMC10221542: Combination with curcumin in prostate cancer
Research
No published studies for Sulforaphane yet
New studies appear here once they’ve been reviewed. Browse all studies.
Dose: as studied, not a recommendation
Ranges seen in adjunct / practice use: 20–100 mg/day SFN equivalents (po) divided BID; with myrosinase source, Trials 50-100 mg glucoraphanin/day; fresh sprouts ~30 mg SFN/100g; stable formulations essential..
Trials studying Sulforaphane
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