期刊
BIOCHEMICAL JOURNAL
卷 473, 期 -, 页码 107-121出版社
PORTLAND PRESS LTD
DOI: 10.1042/BJ20150899
关键词
autophagy; biochemistry and mitochondrial pharmacology; metabolism; peripheral benzodiazepine receptor (PBR); steroids; translocator protein (TSPO)
资金
- Biotechnology and Biological Sciences Research Council [BB/M010384/1]
- Medical Research Council [G1100809/2]
- Bloomsbury Colleges Consortium PhD Studentship
- Petplan Charitable Trust
- Umberto Veronesi Foundation
- Marie Curie Actions
- LAM-Bighi Grant Initiative
- Biotechnology and Biological Sciences Research Council [BB/I013695/1] Funding Source: researchfish
- BBSRC [BB/I013695/1] Funding Source: UKRI
The 18-kDa translocator protein (TSPO) localizes in the outer mitochondrial membrane (OMM) of cells and is readily up-regulated under various pathological conditions such as cancer, inflammation, mechanical lesions and neurological diseases. Able to bind with high affinity synthetic and endogenous ligands, its core biochemical function resides in the translocation of cholesterol into the mitochondria influencing the subsequent steps of (neuro-)steroid synthesis and systemic endocrine regulation. Over the years, however, TSPO has also been linked to core cellular processes such as apoptosis and autophagy. It interacts and forms complexes with other mitochondrial proteins such as the voltage-dependent anion channel (VDAC) via which signalling and regulatory transduction of these core cellular events may be influenced. Despite nearly 40 years of study, the precise functional role of TSPO beyond cholesterol trafficking remains elusive even though the recent breakthroughs on its high-resolution crystal structure and contribution to quality-control signalling of mitochondria. All this along with a captivating pharmacological profile provides novel opportunities to investigate and understand the significance of this highly conserved protein as well as contribute the development of specific therapeutics as presented and discussed in the present review.
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