204: StealTHY CRISPR: Revealing Hidden Metastasis Regulators

StealTHY CRISPR: Revealing Hidden Metastasis Regulators

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

License:
CC BY 4.0 International License (CC BY 4.0)

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Episode link: https://basebybase.com/episodes/stealthy-crispr-revealing-hidden-metastasis-regulators

️ Episode:
204: StealTHY CRISPR: Revealing Hidden Metastasis Regulators

️ Season:
1

Article title:
Stealthy CRISPR: Revealing Hidden Metastasis Regulators

Journal:
Cell

DOI:
10.1016/j.cell.2025.10.007

QC:
This episode was checked against the original article PDF and publication metadata for the episode release published on 2025-11-20.

QC Scope:
- article metadata and core scientific claims from the narration
- excludes analogies, intro/outro, and music
- transcript coverage: Audited transcript sections describing stealth platform design, immunogenicity challenges in vivo, iatrogenic clonal dropout, Harakiri purification, AMHR2 axis as a metastasis driver, and translational relevance via TCGA.
- transcript topics: CRISPR immunogenicity in vivo and iatrogenic clonal dropout; Stealth platform design: immune stealth reporters, autologous reporters, Hit-and-Run Cas9; Harakiri selection and ex vivo purification; Preservation of sgRNA library diversity in immunocompetent models; AMHR2 axis as metastasis driver; Dominant negative AMHR2 decoy receptor therapy in humanized/PDX models

QC Summary:
- factual score: 10/10
- metadata score: 10/10
- supported core claims: 7
- 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:
- Stealth CRISPR platform uses immune stealth reporters, HiT-and-Run Cas9 delivery, and Harakiri selection to render CRISPR screens immunologically inert
- In immunocompetent models, stealth platform preserves clonal diversity and full sgRNA library integrity
- AMHR2 axis identified as a major driver of metastasis; knockout yields a 20-fold reduction in metastases
- Dominant negative AMHR2 decoy receptor suppresses tumor volume by >80% and essentially abolishes metastasis in humanized/PDX models
- Blocking AMHR2 signaling shifts tumor immune microenvironment: reduced Tregs, increased activated macrophages and cytotoxic T cells; Type I interferon genes and STAT1 pathway upreg
- Human relevance supported via TCGA data showing high AMH expression correlates with poor prognosis in breast cancer

QC result: Pass.