Component
Intracellular Mycobacterium tuberculosis viability
Study-defined Intracellular Mycobacterium tuberculosis viability. Read each linked record for species, exposure and endpoint.
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 acts on it
Adding 25(OH)D3 to low-vitamin-D serum restored IFN-gamma -induced antimicrobial activity against intracellularM. tuberculosis.
Experimental context and source evidence
- availability_state
- nutrient_deficiency Imported condition classification; unverified.
- cross_nutrient
- false
- experimental_model
- Human macrophage IFN-gamma experiments with sera of differing 25OHD content
- exposure
- IFN-gamma -stimulated human macrophages; low-vitamin-D serum with 25(OH)D3 add-back; dose/time not recovered from abstract.
- limitations
- Cultured human macrophages and selected serum pools; no universal serum threshold or clinical tuberculosis cure inferred.
- nutrient_topic
- Vitamin D2 and D3 research collection; topical membership is not evidence of a direct dietary effect. · Vitamin D2 and D3
- organism
- Homo sapiens
- plain_language
- The cell experiment also recovered antimicrobial activity.
- primary_references
- [fabri2011] Vitamin D is required for IFN-gamma-mediated antimicrobial activity of human macrophages. (2011). https://pubmed.ncbi.nlm.nih.gov/21998409/ DOI: 10.1126/scitranslmed.3003045
- tissue_or_cell_type
- Human macrophages
- trigger_kind
- nutrient_deficiency Imported condition classification; unverified.
Vitamin D2 and D3: mechanisms, deficiency and nutrient interactions (2026-09-17) · lines 1074–1085
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Human macrophage IFN-gamma experiments with sera of differing 25OHD content · source_derived_draft · unverified_draft
### vd-fabri-killing Adding 25(OH)D3 to low-vitamin-D serum restored IFN-gamma -induced antimicrobial activity against intracellularM. tuberculosis. Condition category: nutrient_deficiency nutrient_topic: Vitamin D2 and D3 research collection; topical membership is not evidence of a direct dietary effect. plain_language: The cell experiment also recovered antimicrobial activity. organism: Homo sapiens tissue_or_cell_type: Human macrophages experimental_model: Human macrophage IFN-gamma experiments with sera of differing 25OHD content limitations: Cultured human macrophages and selected serum pools; no universal serum threshold or clinical tuberculosis cure inferred. exposure: IFN-gamma -stimulated human macrophages; low-vitamin-D serum with 25(OH)D3 add-back; dose/time not recovered from abstract. cross_nutrient: false [fabri2011] Vitamin D is required for IFN-gamma-mediated antimicrobial activity of human macrophages. (2011). https://pubmed.ncbi.nlm.nih.gov/21998409/ DOI: 10.1126/scitranslmed.3003045
Complete structured claim and evidenceTLR activation coupled vitamin D pathway induction to cathelicidin expression and killing of intracellular M. tuberculosis in the human macrophage experiments.
Experimental context and source evidence
- cross_nutrient
- false
- experimental_model
- Human monocyte/macrophage TLR stimulation and intracellular mycobacterial assay
- exposure
- Cultured human macrophages with intracellular M. tuberculosis.
- limitations
- Cellular experimental result, not a human tuberculosis-treatment trial; infection response depends on more than vitamin D.
- nutrient_topic
- Vitamin D2 and D3 research collection; topical membership is not evidence of a direct dietary effect. · Vitamin D2 and D3
- organism
- Homo sapiens
- plain_language
- The cell experiment linked local vitamin D signaling to bacterial killing.
- primary_references
- [liu2006] Toll-like receptor triggering of a vitamin D-mediated human antimicrobial response. (2006). https://pubmed.ncbi.nlm.nih.gov/16497887/ DOI: 10.1126/science.1123933
- tissue_or_cell_type
- Human macrophages
Vitamin D2 and D3: mechanisms, deficiency and nutrient interactions (2026-09-17) · lines 970–981
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Human monocyte/macrophage TLR stimulation and intracellular mycobacterial assay · source_derived_draft · unverified_draft
### vd-tlr-mycobacteria TLR activation coupled vitamin D pathway induction to cathelicidin expression and killing of intracellular M. tuberculosis in the human macrophage experiments. Condition category: normal nutrient_topic: Vitamin D2 and D3 research collection; topical membership is not evidence of a direct dietary effect. plain_language: The cell experiment linked local vitamin D signaling to bacterial killing. organism: Homo sapiens tissue_or_cell_type: Human macrophages experimental_model: Human monocyte/macrophage TLR stimulation and intracellular mycobacterial assay limitations: Cellular experimental result, not a human tuberculosis-treatment trial; infection response depends on more than vitamin D. exposure: Cultured human macrophages with intracellular M. tuberculosis. cross_nutrient: false [liu2006] Toll-like receptor triggering of a vitamin D-mediated human antimicrobial response. (2006). https://pubmed.ncbi.nlm.nih.gov/16497887/ DOI: 10.1126/science.1123933
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.