ArticleCommunications biology2026
Intracellular complement Factor H promotes tumor progression through modulation of cell cycle and actin cytoskeleton.
Article in Communications biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Article
- The Complosome: An Emerging Intracellular Complement Network in Cancer Development and Therapy.International journal of molecular sciences · 2026Review
- Tumour cell-intrinsic complement C1r and C1s regulate cancer cell fitness and shape the immune microenvironment in triple-negative breast cancer.Cellular and molecular life sciences : CMLS · 2026Article
- Complement factor H in cancer biology: intracellular functions, tumor-host interactions, and systemic context.Frontiers in immunology · 2026Review
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Authors and funding
19 authors.
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Abstract
Overexpression of complement genes in the tumor microenvironment, including Factor H (FH), is a strong predictor of poor prognosis in multiple cancers. Its canonical functions in the bloodborne complement cascade, though, cannot explain this prognostic impact. Here, we demonstrate that FH operates within the intracellular space in fibroblasts and tumor cells. By transcriptomics approach in patient tumors, cellular and biochemical assays we revealed that the prognostic impact of FH overexpression is mediated mainly by its cell-intrinsic functions in tumor-promoting fibroblasts and malignant cells. Intranuclear FH interacts with the cell cycle-transcription factor E2F3. FH also promotes proliferation by lowering the nuclear p53 pool. Moreover, in ccRCC cancer cells, FH also regulates cytoskeleton organization and cell morphology, potentially, via interaction with the actin capping CapZ complex. Therefore, complement FH acts as a multitasking effector, regulating cell cycle and actin polymerization, challenging the paradigm of extracellular space-restricted functioning, considered for many complement proteins.
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