Base by Base14 Nov 2025

198: Mechanical Confinement and the Shape-Shifting Life of Melanoma Cells

Mechanical Confinement and the Shape-Shifting Life of Melanoma Cells

Music:
Enjoy the music based on this article at the end of the episode.

License:
This episode is based on an open-access article published under the Creative Commons Attribution 4.0 International License (CC BY 4.0) – https://creativecommons.org/licenses/by/4.0/

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Episode link: https://basebybase.com/episodes/mechanical-confinement-and-the-shape-shifting-life-of-melanoma-cells

️ Episode:
198: Mechanical Confinement and the Shape-Shifting Life of Melanoma Cells

️ Season:
1

Article title:
Mechanical confinement governs phenotypic plasticity in melanoma

Journal:
Nature

DOI:
10.1038/s41586-025-09445-6

QC:
This episode was checked against the original article PDF and publication metadata for the episode release published on 2025-11-14.

QC Scope:
- article metadata and core scientific claims from the narration
- excludes analogies, intro/outro, and music
- transcript coverage: Audited core scientific claims and themes described in the transcript: confinement-driven phenotype switching (go-or-grow), HMGB2-mediated chromatin remodeling, cytoskeletal (acetylated tubulin cage) remodeling, Nesprin2/LINC association, Notch/BRN2 axis in invasion, and drug-tolerance implications.
- transcript topics: Confinement-driven phenotype switching (go-or-grow); Neuronal invasion gene program and MITF suppression; HMGB2 upregulation and chromatin remodeling; Perinuclear acetylated tubulin cage and ATAT1 involvement; Nesprin2 (SYNE2) and LINC complex in HMGB2 enrichment; Nuclear stiffening via Lamin A/C

QC Summary:
- factual score: 10/10
- metadata score: 10/10
- supported core claims: 8
- claims flagged for review: 0
- metadata checks passed: 4
- metadata issues found: 0

Metadata Audited:
- article_doi
- article_title
- article_journal
- license

Factual Items Audited:
- Confinement induces neuronal invasion program and MITF downregulation (SOX11, NEUROD1, NNAT, NEFM upregulation; MITF downregulation)
- HMGB2 upregulation is induced by confinement and HMGB2 concentration increases (approximately doubles) under confinement
- Confinement triggers assembly of a perinuclear acetylated tubulin cage; ATAT1 mediates tubulin acetylation
- Nesprin2 (SYNE2) is required for HMGB2 enrichment and for perinuclear cage assembly
- HMGB2 increases chromatin accessibility at neural crest/neuronal loci; AP-1 and SOX9 motifs enriched
- Notch signaling and BRN2 axis mediate HMGB2-driven invasion

QC result: Pass.

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