Cancer researchSep 3, 2026

Single-Cell Study Using Gene Editing in Organoids Shows NF1 Controls Cervical Cancer Development

CRISPR Gene Editing Weekly Brief ↗PubMed ↗DOI ↗OA ↗

Updated Sep 4, 2026

Abstract

Loss of NF1 can compress the progression of carcinogenesis from 5–10 years into just 3–6 months.

High-grade squamous intraepithelial lesions driven by persistent HPV infection may progress to cervical cancer.
Single-cell analysis shows activation of RAS and proliferation programs during epithelial differentiation.
NF1 has been identified as a significant suppressor of malignant transition in HPV-positive pre-tumoroids.
Loss of NF1 enhances signaling pathways related to RAS and promotes tumorigenic characteristics.
Restoring NF1 in cancer organoids may induce cell death and reduce malignant maintenance.
AI-guided modeling facilitated the design of a peptide that reduced tumor burden in HPV16-driven mouse models.

Simplified

Cervical cancer progresses from high-grade squamous intraepithelial lesions driven by persistent HPV infection. Identifying the gatekeepers restraining malignant transformation could reveal strategies to prevent and treat cervical cancer. Here, we integrated single-cell transcriptomics, CRISPR-Cas9 screening, and organoid modeling to dissect this process. Single-cell analysis of patient samples revealed progressive activation of RAS and proliferation programs along epithelial differentiation paths. A focused CRISPR screen in HPV-positive pre-tumoroids identified NF1 as the top suppressor of malignant transition. NF1 loss accelerated carcinogenesis in organoids, compressing a 5~10-year process into 3~6 months, recapitulating basal cell expansion, dedifferentiation, and tumorigenicity. Mechanistically, NF1 loss enhanced RAS-MAPK and PI3K-AKT signaling, promoted proliferative programs, and remodeled chromatin accessibility at AP-1/E2F motifs. Conversely, NF1 restoration in cancer organoids induced apoptosis and suppressed malignant maintenance. AI-guided modeling was used to design a minimal NF1-mimetic peptide that engaged RAS-GTP to inhibit RAS signaling, reduce tumor burden in HPV16-driven mouse models, and restore local immune permissiveness without systemic activation. Together, these findings establish NF1 as a critical constraint on HPV-associated epithelial evolution and provide a time-compressed organoid model of cervical carcinogenesis, offering proof-of-concept for therapeutic RAS pathway interception via NF1 restoration.