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RKIP Pleiotropic Activities in Cancer and Inflammatory Diseases: Role in Immunity
Roni Touboul1, Stavroula Baritaki2, Apostolos Zaravinos3,4
1Department of Microbiology, Immunology & Molecular Genetics, David Geffen School of Medicine at UCLA, University of California at Los Angeles, Los Angeles, CA 90095, USA.
Abstract:
Several gene products play pivotal roles in the induction of inflammation and the progression of cancer. The Raf kinase inhibitory protein (RKIP) is a cytosolic protein that exerts pleiotropic activities in such conditions, and thus regulates oncogenesis and immune-mediated diseases through its deregulation. Herein, we review the general properties of RKIP, including its: (i) molecular structure; (ii) involvement in various cell signaling pathways (i.e., inhibition of the Raf/MEK/ERK pathway; the NF-kB pathway; GRK-2 or the STAT-3 pathway; as well as regulation of the GSK3Beta signaling; and the spindle checkpoints); (iii) regulation of RKIP expression; (iv) expression's effects on oncogenesis; (v) role in the regulation of the immune system to diseases (i.e., RKIP regulation of T cell functions; the secretion of cytokines and immune mediators, apoptosis, immune check point inhibitors and RKIP involvement in inflammatory diseases); and (vi) bioinformatic analysis between normal and malignant tissues, as well as across various immune-related cells. Overall, the regulation of RKIP in different cancers and inflammatory diseases suggest that it can be used as a potential therapeutic target in the treatment of these diseases.
Insights
Raf kinase inhibitory protein (RKIP) regulates cancer and immune responses. Its deregulation impacts oncogenesis and immune diseases, suggesting RKIP as a potential therapeutic target for cancer and inflammation.
Area of Science:
- Molecular Biology
- Immunology
- Oncology
Background:
- Raf kinase inhibitory protein (RKIP) is a key regulator of cellular processes.
- RKIP deregulation is implicated in oncogenesis and immune-mediated diseases.
- Understanding RKIP's multifaceted roles is crucial for disease intervention.
Purpose of the Study:
- To review the general properties of RKIP.
- To elucidate RKIP's involvement in critical cell signaling pathways.
- To explore RKIP's role in cancer and immune system regulation.
Main Methods:
- Literature review of RKIP's molecular structure and functions.
- Analysis of RKIP's involvement in signaling pathways (Raf/MEK/ERK, NF-kB, STAT-3, etc.).
- Examination of RKIP's role in oncogenesis, immune cell function, and inflammatory diseases.
Main Results:
- RKIP modulates multiple signaling cascades, including those controlling cell growth and inflammation.
- RKIP expression is altered in various cancers and inflammatory conditions.
- RKIP influences T cell functions, cytokine secretion, apoptosis, and immune checkpoints.
Conclusions:
- RKIP exhibits pleiotropic activities relevant to cancer and immune diseases.
- RKIP's regulatory roles in diverse cellular processes highlight its significance.
- RKIP represents a promising therapeutic target for treating cancers and inflammatory disorders.
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