Intracellular partners of fibroblast growth factors 1 and 2 - implications for functions

Published on Feb 1, 2021in Cytokine & Growth Factor Reviews5.982
· DOI :10.1016/J.CYTOGFR.2020.05.004
Katarzyna Dominika Sluzalska1
Estimated H-index: 1
(UWr: University of Wrocław),
Jakub Sławski3
Estimated H-index: 3
(UWr: University of Wrocław)
+ 3 AuthorsMalgorzata Zakrzewska17
Estimated H-index: 17
(UWr: University of Wrocław)
Abstract Fibroblast growth factors 1 and2 (FGF1 and FGF2) are mainly considered as ligands of surface receptors through which they regulate a broad spectrum of biological processes. They are secreted in non-canonical way and, unlike other growth factors, they are able to translocate from the endosome to the cell interior. These unique features, as well as the role of the intracellular pool of FGF1 and FGF2, are far from being fully understood. An increasing number of reports address this problem, focusing on the intracellular interactions of FGF1 and 2. Here, we summarize the current state of knowledge of the FGF1 and FGF2 binding partners inside the cell and the possible role of these interactions. The partner proteins are grouped according to their function, including proteins involved in secretion, cell signaling, nucleocytoplasmic transport, binding and processing of nucleic acids, ATP binding, and cytoskeleton assembly. An in-depth analysis of the network of these binding partners could indicate novel, non-classical functions of FGF1 and FGF2 and uncover an additional level of a fine control of the well-known FGF-regulated cellular processes.
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