TSPO

Translocator protein UniProt accession P30536

Can bind protoporphyrin IX and may play a role in the transport of porphyrins and heme (By similarity). Promotes the transport of cholesterol across mitochondrial membranes and may play a role in lipid metabolism (PubMed:24814875), but its precise physiological role is controversial. It is apparently not required for steroid hormone biosynthesis.

Was initially identified as peripheral-type benzodiazepine receptor; can also bind isoquinoline carboxamides (PubMed:1847678)

Source: UniProt

Interacts with TSPOAP1 (By similarity). May interact with STAR (By similarity). Interacts with MOST-1.

Interacts with TMEM97 (PubMed:37047353). Forms a complex with TMEM97 and PGRMC1; the interaction occurs in MIA PaCa-2 cells but not in MCF7 cells (PubMed:37047353)

Source: UniProt
Mitochondrion membrane — Multi-pass membrane protein
Source: UniProt

Found in many tissue types. Expressed at the highest levels under normal conditions in tissues that synthesize steroids

Source: UniProt

Click a pathway to open the interactive Reactome viewer.

Pathway list and interactive viewer: Reactome

Synthetic Lethal Network

Genes with an experimentally identified or computationally predicted synthetic-lethal relationship to TSPO, aggregated across our SSL data sources. Click any partner node to view that gene’s page.

Nodes and edges are coloured by the SSL data source. Partners appearing in more than one source are shown in grey.

BioGRID SLOrth SynLethDB MexDrugs Multi-source
Sources: BioGRID, SLOrth, SynLethDB, MexDrugs

Clinical Trials

Total Trials Found: 1

NCT ID Condition Brief Title Phase Status
NCT06467773 Central Nervous System Diseases TSPO-PET/MRI in Surveillance of Neuroinflammation in the Central Nervous System N/A RECRUITING
NCT05615415 Neuropsychiatric Post-Acute Sequelae of SARS-CoV-2 Infection Neuropsychiatric Post-Acute Sequelae of SARS-CoV-2 (PASC) Using TSPO Positron Emission Tomography (PET) and MRI N/A ACTIVE_NOT_RECRUITING
NCT02181582 Baseline, Blocking Receptor Binding Specific PET Radioligand Binding to Translocator Protein PHASE1 COMPLETED
NCT07362290 Healthy Volunteers - Male and Female TSPO Occupancy in the Human Lung NA ENROLLING_BY_INVITATION
NCT03662750 Stroke, Ischemic, Inflammatory Response, Stroke, Acute TSPO PET as a Measure of Post-stroke Brain Inflammation: a Natural History Cohort NA COMPLETED
NCT06398392 Dosimetry, Healthy Radiation Dosimetry of the 18 kDa Translocator Protein Ligand [18F]PBR111 in Humans NA COMPLETED
NCT02147392 Pharmacokinetics, Adult Assessment of [11C]ER176 to Image Translocator Protein in Brain and Whole Body of Healthy People EARLY_PHASE1 COMPLETED
NCT03801629 Drug Effect Neuroimmune Effects of Opioid Administration PHASE1 COMPLETED
NCT01265472 Squamous Cell Carcinoma, Basal Cell Carcinoma Comparison of Translocator Protein Expression and Binding Activity in Normal Tissue Versus Non Melanotic Malignancy N/A UNKNOWN
NCT03958630 Dementia PET Imaging of Neuroinflammation in Neurodegenerative Diseases Via a Novel Translocator Protein (TSPO) Radioligand PHASE1 TERMINATED