Component
Experimental amino-acid deprivation
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.
Where it participates (unsigned role)
Autophagy remained unimpaired in AMPK-deficient cells during amino-acid deprivation; ULK1 signaling and LC3B lipidation increased.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Several cultured cell lines under prolonged amino-acid withdrawal.
- limitations
- Different stress from glucose withdrawal; a universal AMPK-on/autophagy-on rule is unsupported.
- nutrient_topic
- Fasting physiological-state collection; human protocols, cellular deprivation and refeeding are distinguished. · Fasting / abstention from energy intake
- plain_language
- Loss of this sensor did not shut down all autophagy.
- primary_references
- Unexpected roles for AMPK in the suppression of autophagy and the reactivation of MTORC1 signaling during prolonged amino acid deprivation. · 2024 · https://pubmed.ncbi.nlm.nih.gov/38744665/ · DOI 10.1080/15548627.2024.2355074
Fasting: fuel switching, nutrient sensing, ketone signaling, nutrient dependencies and refeeding (2026-09-18) · lines 312–318
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Several cultured cell lines under prolonged amino-acid withdrawal. · source_derived_draft · unverified_draft
## fast-ampk-context Loss of this sensor did not shut down all autophagy. Autophagy remained unimpaired in AMPK-deficient cells during amino-acid deprivation; ULK1 signaling and LC3B lipidation increased. Model: Several cultured cell lines under prolonged amino-acid withdrawal. Limitations: Different stress from glucose withdrawal; a universal AMPK-on/autophagy-on rule is unsupported. Evidence access: Primary abstract Unexpected roles for AMPK in the suppression of autophagy and the reactivation of MTORC1 signaling during prolonged amino acid deprivation. · 2024 · https://pubmed.ncbi.nlm.nih.gov/38744665/ · DOI 10.1080/15548627.2024.2355074
Complete structured claim and evidenceAMPK loss impaired mTORC1 reactivation during prolonged amino-acid deprivation and increased apoptosis.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Cultured nutrient-stressed cells.
- limitations
- Cell survival and autophagy readouts must be distinguished.
- nutrient_topic
- Fasting physiological-state collection; human protocols, cellular deprivation and refeeding are distinguished. · Fasting / abstention from energy intake
- plain_language
- The same sensor can support recovery during persistent stress.
- primary_references
- Unexpected roles for AMPK in the suppression of autophagy and the reactivation of MTORC1 signaling during prolonged amino acid deprivation. · 2024 · https://pubmed.ncbi.nlm.nih.gov/38744665/ · DOI 10.1080/15548627.2024.2355074
Fasting: fuel switching, nutrient sensing, ketone signaling, nutrient dependencies and refeeding (2026-09-18) · lines 320–326
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Cultured nutrient-stressed cells. · source_derived_draft · unverified_draft
## fast-ampk-reactivation The same sensor can support recovery during persistent stress. AMPK loss impaired mTORC1 reactivation during prolonged amino-acid deprivation and increased apoptosis. Model: Cultured nutrient-stressed cells. Limitations: Cell survival and autophagy readouts must be distinguished. Evidence access: Primary abstract Unexpected roles for AMPK in the suppression of autophagy and the reactivation of MTORC1 signaling during prolonged amino acid deprivation. · 2024 · https://pubmed.ncbi.nlm.nih.gov/38744665/ · DOI 10.1080/15548627.2024.2355074
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.