Component

Differentiation of rat embryo midbrain and limb bud cells in micromass culture

Differentiation of rat embryo midbrain and limb bud cells in micromass culture. Species, exposure and limitations are retained in each linked claim.

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

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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. The relative potencies of the benzimidazole analogs in rat embryo micromass culture, nocodazole greater than mebendazole approximately equal to albendazole much greater than thiabendazole, mirrored their effectiveness in an assay for in vitro inhibition of mammalian tubulin polymerization, immunofluorescent staining with a monoclonal antibody to beta-tubulin revealed that these agents elicited mitotic arrest, and with the exception of thiabendazole these agents should be considered potential developmental toxicants since they inhibit cell growth and differentiation at nanomolar concentrations.

    Experimental context and source evidence
    evidence_span
    {"source_cache": "artifacts/mebendazole-research/1553749.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "4c8ca680cbc4ebd8441d3d8c083a98587c81141280e9fa61388751264f1ea2ac", "start_char": 0, "end_char": 1384, "text_sha256": "4c8ca680cbc4ebd8441d3d8c083a98587c81141280e9fa61388751264f1ea2ac"}
    experimental_model
    Rat embryo midbrain and limb bud micromass cultures assessed for differentiation and cytotoxicity
    exposure
    Mebendazole, thiabendazole, nocodazole and colchicine, compared with albendazole
    limitations
    An in vitro developmental toxicity screen. It links the effect to the mammalian tubulin binding directly, by showing the potency order matches; it is not a pregnancy outcome.
    nutrient_topic
    Mebendazole research collection; topical membership is not evidence of a direct clinical effect, and mebendazole is recorded separately from albendazole, from the benzimidazole class and from its own crystal forms. · Mebendazole
    organism
    Rat
    plain_language
    The very property that makes it a cancer drug candidate is the property that makes it a suspected developmental toxin.
    primary_references
    [mbz-p1553749] Effects of benzimidazole analogs on cultures of differentiating rodent embryonic cells. (1992). https://pubmed.ncbi.nlm.nih.gov/1553749/ DOI: 10.1016/0041-008x(92)90019-o
    tissue_or_cell_type
    Embryonic midbrain and limb bud cells

    Mebendazole: the tubulin it binds, why that is selective, the crystal form that decides whether any of it works, and the off-target that became an oncology programme (2026-09-22) · lines 602–613

    AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Rat embryo midbrain and limb bud micromass cultures assessed for differentiation and cytotoxicity · source_derived_draft · unverified_draft

    ### mbz-developmental-toxicity-is-the-same-target The relative potencies of the benzimidazole analogs in rat embryo micromass culture, nocodazole greater than mebendazole approximately equal to albendazole much greater than thiabendazole, mirrored their effectiveness in an assay for in vitro inhibition of mammalian tubulin polymerization, immunofluorescent staining with a monoclonal antibody to beta-tubulin revealed that these agents elicited mitotic arrest, and with the exception of thiabendazole these agents should be considered potential developmental toxicants since they inhibit cell growth and differentiation at nanomolar concentrations. Condition category: normal nutrient_topic: Mebendazole research collection; topical membership is not evidence of a direct clinical effect, and mebendazole is recorded separately from albendazole, from the benzimidazole class and from its own crystal forms. plain_language: The very property that makes it a cancer drug candidate is the property that makes it a suspected developmental toxin. organism: Rat tissue_or_cell_type: Embryonic midbrain and limb bud cells experimental_model: Rat embryo midbrain and limb bud micromass cultures assessed for differentiation and cytotoxicity limitations: An in vitro developmental toxicity screen. It links the effect to the mammalian tubulin binding directly, by showing the potency order matches; it is not a pregnancy outcome. exposure: Mebendazole, thiabendazole, nocodazole and colchicine, compared with albendazole evidence_span: {"source_cache": "artifacts/mebendazole-research/1553749.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "4c8ca680cbc4ebd8441d3d8c083a98587c81141280e9fa61388751264f1ea2ac", "start_char": 0, "end_char": 1384, "text_sha256": "4c8ca680cbc4ebd8441d3d8c083a98587c81141280e9fa61388751264f1ea2ac"} [mbz-p1553749] Effects of benzimidazole analogs on cultures of differentiating rodent embryonic cells. (1992). https://pubmed.ncbi.nlm.nih.gov/1553749/ DOI: 10.1016/0041-008x(92)90019-o
    Complete structured claim and evidence

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