Mapping the Fate of Hypoxic Cells Using an Irreversible Fluorescent Switch.
Methods in molecular biology (Clifton, N.J.)(2024)
摘要
Hypoxia has been reported to promote tumor progression and metastasis in murine models, and patients with hypoxic tumors have a worse prognosis. Besides its effect on cancer, normal processes like embryogenesis, or other pathologies such as ischemia, depend on hypoxia-regulated mechanisms. Given the degradable nature of HIF-1/2α in the presence of oxygen, defining the role of hypoxia in modeling biological processes becomes challenging when a cell enters oxygen-rich regions within a tissue. Here, we describe a unique approach to permanently mark cells that experience hypoxia with a fluorescent protein switch that is maintained even after a cell is reoxygenated. This method consists of a dual-viral delivery system that can be transduced into any mammalian cell line.
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