Component
Cucurbitacin B cysteine conjugate
Context-specific entity; species, compartment and exposure are stated on each claim.
2 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What it acts on
The cucurbitacin B cysteine conjugate retained antiproliferative activity in tested HepG2, MCF7 and PANC1 cells.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human cancer-cell models of an identified metabolite.
- limitations
- Not evidence of clinical efficacy or selectivity for cancer over authenticated normal cells.
- nutrient_topic
- Cucurbitacins collection; species, compartment, exposure, co-substrates and manipulation remain explicit. · Cucurbitacins
- plain_language
- Conjugation did not automatically erase every biological effect.
- primary_references
- Metabolic fate of the natural anticancer agent cucurbitacin B: an LC-MS/MS-enabled profiling of its major phase I and II conjugates in vivo. · 2024 · https://pubmed.ncbi.nlm.nih.gov/39441433/ · DOI 10.1007/s00216-024-05608-y
Cucurbitacins: thiol chemistry, cytoskeleton, metabolic dependencies and signaling (2026-09-20) · lines 380–386
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Human cancer-cell models of an identified metabolite. · source_derived_draft · unverified_draft
## cucurbitacin-b-cys-retained-activity Conjugation did not automatically erase every biological effect. The cucurbitacin B cysteine conjugate retained antiproliferative activity in tested HepG2, MCF7 and PANC1 cells. Model: Human cancer-cell models of an identified metabolite. Limitations: Not evidence of clinical efficacy or selectivity for cancer over authenticated normal cells. Evidence access: Primary abstract Metabolic fate of the natural anticancer agent cucurbitacin B: an LC-MS/MS-enabled profiling of its major phase I and II conjugates in vivo. · 2024 · https://pubmed.ncbi.nlm.nih.gov/39441433/ · DOI 10.1007/s00216-024-05608-y
Complete structured claim and evidence
What acts on it
Rat cucurbitacin B metabolism profiling detected a cysteine conjugate among phase-II products; 13 metabolites were identified and seven confirmed in the overall study.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Rat LC-MS metabolism study.
- limitations
- Not all structures had identical confirmation strength; this record does not infer human rates.
- nutrient_topic
- Cucurbitacins collection; species, compartment, exposure, co-substrates and manipulation remain explicit. · Cucurbitacins
- plain_language
- Cysteine also appears in a measured metabolic product.
- primary_references
- Metabolic fate of the natural anticancer agent cucurbitacin B: an LC-MS/MS-enabled profiling of its major phase I and II conjugates in vivo. · 2024 · https://pubmed.ncbi.nlm.nih.gov/39441433/ · DOI 10.1007/s00216-024-05608-y
Cucurbitacins: thiol chemistry, cytoskeleton, metabolic dependencies and signaling (2026-09-20) · lines 364–370
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Rat LC-MS metabolism study. · source_derived_draft · unverified_draft
## cucurbitacin-b-rat-cysteine-metabolism Cysteine also appears in a measured metabolic product. Rat cucurbitacin B metabolism profiling detected a cysteine conjugate among phase-II products; 13 metabolites were identified and seven confirmed in the overall study. Model: Rat LC-MS metabolism study. Limitations: Not all structures had identical confirmation strength; this record does not infer human rates. Evidence access: Primary abstract Metabolic fate of the natural anticancer agent cucurbitacin B: an LC-MS/MS-enabled profiling of its major phase I and II conjugates in vivo. · 2024 · https://pubmed.ncbi.nlm.nih.gov/39441433/ · DOI 10.1007/s00216-024-05608-y
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.