Component

Antimicrobial activity of butyrate-differentiated human macrophages

Context-specific entity; species, compartment and exposure are stated on each claim.

4 recorded relationships. Experimental role, claim status and evidence remain attached to each record.

Read recorded mechanisms Open recursive mind map

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.

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.

Recorded relationships

What acts on it

  1. Combined S100A8/S100A9 siRNA increased the intracellular bacterial load in butyrate-differentiated human macrophages.

    Human S100A8/S100A9 calprotectin complex → Antimicrobial activity of butyrate-differentiated human macrophages source_derived_draftungraded
    Experimental context and source evidence
    availability_state
    machinery_impairment Imported condition classification; unverified.
    evidence_access
    Primary full text, Figure 4G and results
    experimental_model
    Human macrophages, dual gene silencing and Salmonella gentamicin-protection assay.
    limitations
    This perturbation supports a calprotectin contribution; it does not isolate zinc or manganese sequestration as the operative mechanism.
    nutrient_topic
    Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
    plain_language
    Reducing both components weakened the antimicrobial response.
    primary_references
    The Short Chain Fatty Acid Butyrate Imprints an Antimicrobial Program in Macrophages. · 2019 · https://pubmed.ncbi.nlm.nih.gov/30683619/ · DOI 10.1016/j.immuni.2018.12.018
    trigger_kind
    machinery_impairment Imported condition classification; unverified.

    Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 446–452

    AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human macrophages, dual gene silencing and Salmonella gentamicin-protection assay. · source_derived_draft · unverified_draft

    ## butyrate-calprotectin-silencing Reducing both components weakened the antimicrobial response. Combined S100A8/S100A9 siRNA increased the intracellular bacterial load in butyrate-differentiated human macrophages. Model: Human macrophages, dual gene silencing and Salmonella gentamicin-protection assay. Limitations: This perturbation supports a calprotectin contribution; it does not isolate zinc or manganese sequestration as the operative mechanism. Evidence access: Primary full text, Figure 4G and results The Short Chain Fatty Acid Butyrate Imprints an Antimicrobial Program in Macrophages. · 2019 · https://pubmed.ncbi.nlm.nih.gov/30683619/ · DOI 10.1016/j.immuni.2018.12.018
    Complete structured claim and evidence

  2. Differentiating human blood monocytes with butyrate enhanced subsequent macrophage antibacterial activity without increasing inflammatory cytokine output.

    Butyrate → Antimicrobial activity of butyrate-differentiated human macrophages source_derived_draftungraded
    Experimental context and source evidence
    evidence_access
    Primary full text, human macrophage differentiation/results
    experimental_model
    Human donor monocyte-derived macrophages.
    limitations
    Differentiation exposure is different from acute dosing of mature cells or treating an infection in a patient.
    nutrient_topic
    Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
    plain_language
    Microbe killing and inflammatory signaling changed independently.
    primary_references
    The Short Chain Fatty Acid Butyrate Imprints an Antimicrobial Program in Macrophages. · 2019 · https://pubmed.ncbi.nlm.nih.gov/30683619/ · DOI 10.1016/j.immuni.2018.12.018

    Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 390–396

    AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human donor monocyte-derived macrophages. · source_derived_draft · unverified_draft

    ## butyrate-macrophage-killing Microbe killing and inflammatory signaling changed independently. Differentiating human blood monocytes with butyrate enhanced subsequent macrophage antibacterial activity without increasing inflammatory cytokine output. Model: Human donor monocyte-derived macrophages. Limitations: Differentiation exposure is different from acute dosing of mature cells or treating an infection in a patient. Evidence access: Primary full text, human macrophage differentiation/results The Short Chain Fatty Acid Butyrate Imprints an Antimicrobial Program in Macrophages. · 2019 · https://pubmed.ncbi.nlm.nih.gov/30683619/ · DOI 10.1016/j.immuni.2018.12.018
    Complete structured claim and evidence

Where it participates (unsigned role)

  1. Butyrate exposure during human monocyte differentiation increased S100A8/S100A9 expression and calprotectin protein in the resulting macrophages.

    Butyrate → Human S100A8/S100A9 calprotectin complex source_derived_draftungraded
    Experimental context and source evidence
    evidence_access
    Primary full text, Figure 4 and results
    experimental_model
    Human donor monocyte-derived macrophages.
    limitations
    Expression alone does not identify which antimicrobial chemical mechanism operated.
    nutrient_topic
    Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
    plain_language
    The cells produced more of a two-protein antimicrobial complex.
    primary_references
    The Short Chain Fatty Acid Butyrate Imprints an Antimicrobial Program in Macrophages. · 2019 · https://pubmed.ncbi.nlm.nih.gov/30683619/ · DOI 10.1016/j.immuni.2018.12.018

    Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 438–444

    AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human donor monocyte-derived macrophages. · source_derived_draft · unverified_draft

    ## butyrate-calprotectin-expression The cells produced more of a two-protein antimicrobial complex. Butyrate exposure during human monocyte differentiation increased S100A8/S100A9 expression and calprotectin protein in the resulting macrophages. Model: Human donor monocyte-derived macrophages. Limitations: Expression alone does not identify which antimicrobial chemical mechanism operated. Evidence access: Primary full text, Figure 4 and results The Short Chain Fatty Acid Butyrate Imprints an Antimicrobial Program in Macrophages. · 2019 · https://pubmed.ncbi.nlm.nih.gov/30683619/ · DOI 10.1016/j.immuni.2018.12.018
    Complete structured claim and evidence

  2. HDAC3 inhibition and HDAC3 siRNA supported the HDAC3-dependent differentiation program induced by butyrate in human macrophages.

    Butyrate → Human histone deacetylase 3 source_derived_draftungraded
    Experimental context and source evidence
    evidence_access
    Primary full text, Figure 5
    experimental_model
    Human donor macrophages; HDAC inhibitors and gene silencing.
    limitations
    Does not imply butyrate is selective for HDAC3 in every tissue.
    nutrient_topic
    Butyrate collection; molecular form, preparation, species, exposure and manipulation remain explicit. · Butyrate
    plain_language
    A chromatin enzyme helped explain the antimicrobial program.
    primary_references
    The Short Chain Fatty Acid Butyrate Imprints an Antimicrobial Program in Macrophages. · 2019 · https://pubmed.ncbi.nlm.nih.gov/30683619/ · DOI 10.1016/j.immuni.2018.12.018

    Butyrate: microbial production, fuel use, signaling and nutrient interactions (2026-09-19) · lines 398–404

    AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human donor macrophages; HDAC inhibitors and gene silencing. · source_derived_draft · unverified_draft

    ## butyrate-macrophage-hdac3 A chromatin enzyme helped explain the antimicrobial program. HDAC3 inhibition and HDAC3 siRNA supported the HDAC3-dependent differentiation program induced by butyrate in human macrophages. Model: Human donor macrophages; HDAC inhibitors and gene silencing. Limitations: Does not imply butyrate is selective for HDAC3 in every tissue. Evidence access: Primary full text, Figure 5 The Short Chain Fatty Acid Butyrate Imprints an Antimicrobial Program in Macrophages. · 2019 · https://pubmed.ncbi.nlm.nih.gov/30683619/ · DOI 10.1016/j.immuni.2018.12.018
    Complete structured claim and evidence

In the sources

Preserved passages that mention this component, quoted exactly. Open one to read it in context.

    This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.

    Evidence, AI assistance and curation standards