Abstract
Folliculin interacting protein 1 (FNIP1), a novel folliculin interacting protein 1, is a key regulatory factor for mitochondrial function. FNIP1 mainly responds to energy signal transduction through physical interactions with 5′-AMP activated protein kinase (AMPK). Simultaneously, it affects the transcription of mitochondria-associated genes by regulating the lysosomal localization of mechanistic target of rapamycin kinase (mTORC1). This article takes FNIP1 as the core and first introduces its involvement in the development of B cells and invariant natural killer T (iNKT) cells, muscle fiber type conversion, and the thermogenic remodeling of adipocytes by regulating mitochondrial function. In addition we discuss the detailed impact of upstream regulatory factors of FNIP1 on its function. Finally, the impact of FNIP1 on the prognosis and treatment of clinically related metabolic diseases is summarized, aiming to provide a new theoretical basis and treatment plans for the diagnosis and treatment of such diseases.
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