Intracellular and extracellular cytokine-like functions of prothymosin α: Implications for the development of immunotherapies

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Abstract

Prothymosin α (ProTα) is a 12.5-kDa, highly acidic protein widely distributed in different cell types expressed intracellularly and extracellularly. ProTα does not contain a secretion-signal sequence and is released by a nonclassical secretory pathway with a cargo protein. New findings on the extracellular function of ProTα have yielded exciting insights into the cytokine-like functions of this host protein that stimulates type I interferon via Toll-like receptor 4. Here, we discuss the intracellular function of ProTα, how new findings of cytokine-like activities of ProTα aid our understanding of mechanisms that direct ProTα functions, and the potential application of these new insights to the development of immunotherapies.

Original languageEnglish
Pages (from-to)1199-1208
Number of pages10
JournalFuture Medicinal Chemistry
Volume3
Issue number9
DOIs
StatePublished - Jul 2011

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