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Co-immunoprecipitation Assay Using Endogenous Nuclear Proteins from Cells Cultured Under Hypoxic Conditions
Published on: August 2, 2018
Downregulation of miR-337-3p in hypoxia/reoxygenation neuroblastoma cells increases KCTD11 expression
Lin Zhu1, Yi-Juan Xin1, Mu He1
1Department of Clinical Laboratory, Xijing Hospital, Air Force Medical University, Xi'an, Shaanxi, China.
Abstract:
Neurodegeneration is linked to the progressive loss of neural function and is associated with several diseases. Hypoxia is a hallmark in many of these diseases, and several therapies have been developed to treat this disease, including gene expression therapies that should be tightly controlled to avoid side effects. Cells experiencing hypoxia undergo a series of physiological responses that are induced by the activation of various transcription factors. Modulation of microRNA (miRNA) expression to alter transcriptional regulation has been demonstrated to be beneficial in treating multiple diseases, and in this study, we therefore explored potential miRNA candidates that could influence hypoxia-induced nerve cell death. Our data suggest that in mouse neuroblasts Neuro-2a cells with hypoxia/reoxygenation (H/R), miR-337-3p is downregulated to increase the expression of Potassium channel tetramerization domain containing 11 (KCTD11) and subsequently promote apoptosis. Here, we demonstrate for the first time that KCTD11 plays a role in the cellular response to hypoxia, and we also provide a possible regulatory mechanism by identifying the axis of miR-337-3p/KCTD11 as a promising candidate modulator of nerve cell survival after H/R exposure.
Insights
MicroRNA-337-3p (miR-337-3p) downregulation increases Potassium channel tetramerization domain containing 11 (KCTD11) expression, promoting nerve cell death after hypoxia/reoxygenation. This miR-337-3p/KCTD11 axis offers a new target for neuroprotection.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Neurodegeneration involves progressive neural function loss, often linked to hypoxia.
- Hypoxia triggers cellular responses via transcription factor activation.
- MicroRNA (miRNA) modulation is a therapeutic strategy for various diseases.
Purpose of the Study:
- To identify microRNA candidates influencing hypoxia-induced nerve cell death.
- To investigate the role of miR-337-3p in hypoxia/reoxygenation (H/R) stress in neuroblasts.
Main Methods:
- Utilized mouse neuroblast Neuro-2a cells subjected to hypoxia/reoxygenation (H/R).
- Analyzed changes in microRNA and gene expression.
- Investigated the functional relationship between miR-337-3p and KCTD11.
Main Results:
- miR-337-3p was found to be downregulated in H/R-exposed Neuro-2a cells.
- Downregulation of miR-337-3p led to increased expression of Potassium channel tetramerization domain containing 11 (KCTD11).
- Increased KCTD11 expression promoted apoptosis in response to H/R.
Conclusions:
- KCTD11 plays a significant role in the cellular response to hypoxia.
- The miR-337-3p/KCTD11 axis is identified as a key regulatory mechanism in H/R-induced nerve cell death.
- This axis represents a potential therapeutic target for modulating nerve cell survival post-hypoxia.
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