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Updated: May 25, 2026
Novel Whole-tissue Quantitative Assay of Nitric Oxide Levels in Drosophila Neuroinflammatory Response
Published on: December 4, 2013
[Effect of nitric oxide on expression of apoptotic genes and HSP70 in Drosophila]
Abstract:
Abstract-Data on involvement of nitric oxide in apoptosis are contradictory. The balance between anti- and proapoptotic activities of nitric oxide depends on many factors, including its concentration in a tissue and interactions with other regulators of apoptosis. This paper describes the results of a series of experiments on the effect of nitric oxide donors and inhibitors as well as dNOS1 and dNOS4 transgenes on the apoptosis on drosophila LobRSV mutant strain and wild-type strain Oregon R. It has been shown that a high nitric oxide content in cells is able to inhibit antiapoptotic effect of HSP70 and stimulate apoptosis, possibly, via the grim-mediated apoptotic pathway. Moreover, long-term action of a high nitric oxide concentration during the entire development more efficiently stimulates the proapoptotic genes as compared with short-term action of this agent.
Insights
High nitric oxide levels can inhibit HSP70
Area of Science:
- Molecular Biology
- Cell Biology
- Genetics
Context:
- Contradictory data exist on nitric oxide's role in apoptosis.
- Nitric oxide's apoptotic effects depend on concentration and interactions with other regulators.
- This study investigates nitric oxide's impact on apoptosis in Drosophila.
Purpose:
- To elucidate the role of nitric oxide in apoptosis.
- To examine the effects of nitric oxide donors, inhibitors, and transgenes on apoptosis in Drosophila.
- To understand the influence of nitric oxide concentration and duration on apoptotic pathways.
Summary:
- High nitric oxide levels inhibit the antiapoptotic HSP70 protein.
- High nitric oxide promotes apoptosis, potentially through the grim-mediated pathway.
- Long-term high nitric oxide exposure more effectively stimulates proapoptotic genes than short-term exposure.
Impact:
- Provides insights into the complex regulation of apoptosis by nitric oxide.
- Highlights the concentration-dependent and duration-dependent effects of nitric oxide.
- Offers a model system for studying nitric oxide's role in cell death pathways.
