What does this research mean for the field?

A rare subset of disseminated tumor cells evades early immune elimination and drives metastasis by entering a transient dormant state characterized by high PHGDH expression, which epigenetically suppresses immune recruitment. Novelty: ClaimNovelty.NOVEL_FINDING. Consensus alignment: ConsensusAlignment.ESTABLISHES_NEW_DIRECTION.

What question did this study set out to answer?

To elucidate the spatiotemporal dynamics, immune evasion mechanisms, and niche remodeling processes that enable rare surviving disseminated tumor cells to form lung metastases.

August 22, 2026Cancer Discovery

PHGDH-High Dormant Tumor Cells Evade Immunity and Drive Metastasis

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Overview

Preclinical multi-omic profiling reveals how PHGDH-driven epigenetic silencing enables dormant disseminated tumor cells to evade immunity during lung metastasis, highlighting novel therapeutic...

Key Points

To elucidate the spatiotemporal dynamics, immune evasion mechanisms, and niche remodeling processes that enable rare surviving disseminated tumor cells to form lung metastases.
Generated a spatiotemporal multi-omics atlas (Stereo-seq, scRNA-seq, snATAC-seq) across nine timepoints from 15 minutes to 35 days post-injection in a hepatocellular carcinoma mouse lung metastasis model.
Assessed mechanisms through alveolar type 2 cell cocultures, lineage tracing, and genetic or pharmacological inhibition of the PHGDH–SAM–H3K27me3 axis in immunocompetent versus immunodeficient mice, cross-validated with human cancer data.
Natural killer and neutrophil responses eliminate most disseminated tumor cells, but a surviving subset enters transient dormancy driven by alveolar type 2 cells and marked by high PHGDH expression.
PHGDH increases S-adenosylmethionine production to deposit repressive H3K27me3 marks on chemokine genes, suppressing immune cell recruitment and facilitating escape from immune clearance.
Cx3cr1-high macrophages remodel the pre-metastatic niche to promote regulatory T cell infiltration and tumor proliferation via IGF1, while targeting PHGDH restores immune infiltration and blocks metastasis in immunocompetent mice.

Cite This Study

A 2026 study studied this question.

synapsesocial.com/papers/6a895f87ca7ade938187e39b https://doi.org/10.1158/2159-8290.cd-rw2026-073

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August 22, 2026Cancer Discovery

PHGDH-High Dormant Tumor Cells Evade Immunity and Drive Metastasis

View Full Paper

Ask AI

Bookmark

Discussion

Member takes

Overview

Preclinical multi-omic profiling reveals how PHGDH-driven epigenetic silencing enables dormant disseminated tumor cells to evade immunity during lung metastasis, highlighting novel therapeutic...

Key Points

To elucidate the spatiotemporal dynamics, immune evasion mechanisms, and niche remodeling processes that enable rare surviving disseminated tumor cells to form lung metastases.
Generated a spatiotemporal multi-omics atlas (Stereo-seq, scRNA-seq, snATAC-seq) across nine timepoints from 15 minutes to 35 days post-injection in a hepatocellular carcinoma mouse lung metastasis model.
Assessed mechanisms through alveolar type 2 cell cocultures, lineage tracing, and genetic or pharmacological inhibition of the PHGDH–SAM–H3K27me3 axis in immunocompetent versus immunodeficient mice, cross-validated with human cancer data.
Natural killer and neutrophil responses eliminate most disseminated tumor cells, but a surviving subset enters transient dormancy driven by alveolar type 2 cells and marked by high PHGDH expression.
PHGDH increases S-adenosylmethionine production to deposit repressive H3K27me3 marks on chemokine genes, suppressing immune cell recruitment and facilitating escape from immune clearance.
Cx3cr1-high macrophages remodel the pre-metastatic niche to promote regulatory T cell infiltration and tumor proliferation via IGF1, while targeting PHGDH restores immune infiltration and blocks metastasis in immunocompetent mice.

Cite This Study

A 2026 study studied this question.

synapsesocial.com/papers/6a895f87ca7ade938187e39b https://doi.org/10.1158/2159-8290.cd-rw2026-073

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