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Control of lymphokine production by protein kinase C
J J Sando1, E C Homan, D E Jensen
1Department of Pharmacology and Cancer Center, Univ. of Virginia, Charlottesville 22908.
Abstract:
As illustrated in Fig. 3, our understanding of lymphokine production is incomplete. Nuclear effects of PKC are probably mediated by phosphorylated substrates. Some of the substrates are themselves being identified as kinases and phosphatases, adding more complexity to the pathway. Use of resistant cell lines is one of the approaches that may help link early phosphorylation events with later transcriptional responses.
Insights
Our understanding of lymphokine production is incomplete. Identifying phosphorylated substrates of protein kinase C (PKC) may link early events to later transcriptional responses.
Area of Science:
- Immunology and Molecular Biology
Background:
- Lymphokine production is critical for immune responses but remains incompletely understood.
- Protein kinase C (PKC) plays a role in cellular signaling pathways, including those affecting immune cell function.
Purpose of the Study:
- To investigate the nuclear effects of PKC and their role in lymphokine production.
- To identify phosphorylated substrates of PKC that mediate downstream signaling events.
Main Methods:
- Utilizing resistant cell lines to dissect signaling pathways.
- Analyzing phosphorylation events and their correlation with transcriptional responses.
Main Results:
- The nuclear actions of PKC are likely mediated by its phosphorylated substrates.
- Some identified substrates are kinases and phosphatases, indicating a complex regulatory network.
Conclusions:
- Further research into PKC substrates is necessary to fully elucidate lymphokine production pathways.
- Resistant cell lines are a valuable tool for linking early signaling events to transcriptional outcomes.