Comparative time-series multi-omics analyses suggest H1.2 involvement in anoxic adaptation and cancer resistance
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View abstract on PubMed
Summary
This summary is machine-generated.Naked mole rats possess unique adaptations for surviving low oxygen and resisting cancer. Researchers found that histone H1.2 plays a key role in these remarkable traits, offering insights into aging and disease resistance.
Area Of Science
- Cell Biology
- Genetics
- Comparative Physiology
Background
- Naked mole rats (NMRs) exhibit exceptional longevity and resistance to hypoxia and cancer.
- Understanding the molecular mechanisms behind these traits is crucial for biomedical research.
Purpose Of The Study
- To investigate the molecular differences between NMR embryonic fibroblasts (NEFs) and mouse embryonic fibroblasts (MEFs) under anoxic conditions.
- To identify key genes and pathways involved in NMR's hypoxia and cancer resistance.
Main Methods
- Comparative transcriptomics and proteomics analysis of NEFs and MEFs under anoxia.
- Mechanistic studies involving histone H1.2 (HIST1H1C) expression, PARP1, HIF-1α, and NRF2/P62 signaling.
- Development and testing of an engineered H1.2 knock-in mouse model.
Main Results
- Histone H1.2 accumulation was higher in NEFs, linked to lower PARP1 expression.
- H1.2 directly interacts with HIF-1α, promoting its expression and dimerization with HIF-1β.
- H1.2 overexpression induced autophagy, suppressed cancer cell migration and tumor formation via NRF2/P62.
- H1.2 knock-in mice showed enhanced hypoxic survival and reduced tumor formation.
Conclusions
- Histone H1.2 is a critical factor in naked mole rat's anoxic adaptation and cancer resistance.
- H1.2's interaction with HIF-1α and modulation of NRF2/P62 pathway are key mechanisms.
- H1.2 represents a potential therapeutic target for hypoxia-related diseases and cancer.
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