This project is a continuation of a line of investigation we started more than 20 years ago. We then discovered a protein, called NF-KB, that subsequent work has shown to playa key role in inflammation and immunity. Here we propose four lines of investigation (aims) that seek to increase our knowledge of the roles of NF-KB in the inflammatory response. Inflammation is a process that continues for days following an initiating stimulus and NF-KB plays a role throughout:
our first aim i s to understand the temporal control processes that allow the inflammatory response to unfold in an orderly manner.
Our second aim i s to probe the role played by an enigmatic regulator of NF-KB responses called B94. It potentiates induction of some genes by NF-KB but there is no mechanistic or physiological understanding of its effects. NF-KB is extensively modified as part of its mode of action: our final two aims are to investigate previously uncharacterized modifications for which we have preliminary indications of importance: methylation and glycosylation.

Public Health Relevance

Realization of these four aims will significantly increase our understanding of the inflammatory response that underlies the body's ability to fight infections. Chronic, unregulated inflammation is thought be involved in cancer, heart disease, autoimmunity and other conditions;this work will also help to understand and hopefully treat these ailments.

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
2R01GM039458-25
Application #
7655586
Study Section
Molecular Genetics C Study Section (MGC)
Program Officer
Tompkins, Laurie
Project Start
1988-12-01
Project End
2011-06-30
Budget Start
2009-07-17
Budget End
2010-06-30
Support Year
25
Fiscal Year
2009
Total Cost
$533,281
Indirect Cost
Name
California Institute of Technology
Department
Type
Schools of Arts and Sciences
DUNS #
009584210
City
Pasadena
State
CA
Country
United States
Zip Code
91125
Ramakrishnan, Parameswaran; Yui, Mary A; Tomalka, Jeffrey A et al. (2016) Deficiency of Nuclear Factor-?B c-Rel Accelerates the Development of Autoimmune Diabetes in NOD Mice. Diabetes 65:2367-79
Ramakrishnan, Parameswaran; Clark, Peter M; Mason, Daniel E et al. (2013) Activation of the transcriptional function of the NF-?B protein c-Rel by O-GlcNAc glycosylation. Sci Signal 6:ra75
Hao, Shengli; Baltimore, David (2013) RNA splicing regulates the temporal order of TNF-induced gene expression. Proc Natl Acad Sci U S A 110:11934-9
Ea, Chee-Kwee; Hao, ShengLi; Yeo, Kok Siong et al. (2012) EHMT1 protein binds to nuclear factor-?B p50 and represses gene expression. J Biol Chem 287:31207-17
Ramakrishnan, P; Kahn, D A; Baltimore, D (2011) Anti-apoptotic effect of hyperglycemia can allow survival of potentially autoreactive T cells. Cell Death Differ 18:690-9
Ramakrishnan, Parameswaran; Baltimore, David (2011) Sam68 is required for both NF-*B activation and apoptosis signaling by the TNF receptor. Mol Cell 43:167-79
Ea, Chee-Kwee; Baltimore, David (2009) Regulation of NF-kappaB activity through lysine monomethylation of p65. Proc Natl Acad Sci U S A 106:18972-7
Lee, Timothy K; Denny, Elissa M; Sanghvi, Jayodita C et al. (2009) A noisy paracrine signal determines the cellular NF-kappaB response to lipopolysaccharide. Sci Signal 2:ra65
Hao, Shengli; Baltimore, David (2009) The stability of mRNA influences the temporal order of the induction of genes encoding inflammatory molecules. Nat Immunol 10:281-8
Taganov, Konstantin D; Boldin, Mark P; Chang, Kuang-Jung et al. (2006) NF-kappaB-dependent induction of microRNA miR-146, an inhibitor targeted to signaling proteins of innate immune responses. Proc Natl Acad Sci U S A 103:12481-6

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