Huwentoxin-IV vs Plitidepsin
Head-to-head comparison of Huwentoxin-IV (Huwentoxin-IV from Selenocosmia huwena venom) and Plitidepsin (Dehydrodidemnin B (Plitidepsin)) — benefits, dosing, side effects, research data, and where to buy.
Research Score
| Property | Huwentoxin-IV | Plitidepsin |
|---|---|---|
| Category | Experimental | Experimental |
| Full Name | Huwentoxin-IV from Selenocosmia huwena venom | Dehydrodidemnin B (Plitidepsin) |
| Molecular Weight | 4,000 Da | 1110.3 Da |
| Half-Life | Minutes to hours | Approximately 44 hours |
| Amino Acids | 35 | N/A |
| Typical Dose | 0.01-1 nmol intrathecal|1-100 nM in vitro|single-dose rodent studies | 1.5 mg/m2 IV |
| Route | Intrathecal | Intravenous |
| Purity | ≥98% | ≥98% |
| Studies Count | 110 | 240 |
| Research Status | Pre-clinical | Clinical |
Huwentoxin-IV Benefits
- ✓Nav1.7 selectivity
- ✓pain-channel validation
- ✓action-potential research
- ✓analgesic lead optimization
Plitidepsin Benefits
- ✓antineoplastic
- ✓antiviral
- ✓pro-apoptotic
- ✓anti-inflammatory
Huwentoxin-IV Dosing
In vitro Nav1.7 electrophysiology|Intrathecal rodent analgesia studies|Single-bolus channel selectivity assays
Plitidepsin Dosing
1.5 mg/m2 IV infusion in oncology trials|q21d or similar intermittent schedules|dose escalation and combination protocols in studies
Huwentoxin-IV Side Effects
- ⚠Neurological impairment at high exposure
- ⚠off-target sodium-channel effects
- ⚠injection-site irritation
Plitidepsin Side Effects
- ⚠nausea
- ⚠fatigue
- ⚠transaminase elevation
Research Overview
Huwentoxin-IV
Studies show huwentoxin-IV can inhibit sodium-channel currents with notable selectivity, making it useful for dissecting pain-sensing neuron excitability. It is one of the better known spider-venom templates for Nav1.7-targeted drug discovery.
Plitidepsin
Plitidepsin has been studied for its ability to disrupt eEF1A-dependent pathways, induce oxidative stress, and suppress tumor cell growth. It has reached clinical oncology development and was also evaluated as a candidate against SARS-CoV-2 in the literature.
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