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. 2020 May 9;39(3):919–932. doi: 10.1007/s10555-020-09879-6

Table 2.

The human organic anionic and cationic transporters: Gene name, corresponding transport protein, tissue distribution and main substrates [912]

Gene Protein Tissue expression Substrates
SLC22A1 OCT1 Liver, intestine, kidney, lung, skeletal muscle, brain, adipose tissue, immune cells Organic cations
Oxiplatin
Cisplatin
Carboplatin
SLC22A2 OCT2 Kidney, small intestine, lung, placenta, thymus, brain, inner ear Organic cations
Oxaliplatin
Cisplatin
SLC22A3 OCT3 Heart, skeletal muscle, brain, small intestine, liver, lung, kidney, bladder, breast, blood vessels, placenta Organic cations
Oxaliplatin
SLC22A4 OCTN1 Kidney, intestine, spleen, heart, skeletal muscle, brain, breast, thymus, prostate, airways, testis, eye, immune cells, bone marrow, pancreas, placenta, lung Zwitterions
Organic cations
l-Carnitine
Oxaliplatin
SLC22A5 OCTN2 Skeletal muscle, kidney, breast, prostate, lung, pancreas, heart, small intestine, thyroid gland, liver, placenta and spinal cord Zwitterions
Organic cations
l-Carnitine
SLC22A6 OAT1 Kidney, placenta, brain, eyes, smooth muscle Small xenobiotics
Prostaglandin
Urate
Antivirals
Methotrexate
SLC22A7 OAT2 Liver, kidney, lung, brain, small intestine, eye, heart Antivirals
cGMP
Prostaglandin
Tetracycline
Estrone-3-sulfate
SLC22A8 OAT3 Liver, kidney, brain, skeletal muscle, retina, testes
Small xenobiotic
Conjugated steroids
Carnitine
Prostaglandin
Vitamins
Estrone-3-sulfate
Estradiol
Methotrexate
Tetracycline
SLC22A9 OAT7 Liver Oestrogen-3-sulfate
SLC22A10 OAT5 Liver Unknown
SLC22A11 OAT4 Kidney, placenta, brain Estrone-3-sulfate
Prostaglandin
Urate
Tetracycline
Methotrexate
SLC22A12 URAT1 Kidney, smooth muscle Urate
SLC22A13 OAT10 Kidney, colon, small intestine, brain, heart Urate
Organic anions
Nicotinate
SLC22A16 OCT6 Testis, bone marrow, kidney l-Carnitine
Non-charged compounds
SLC22A20 OCT6 Olfactory mucosa, testes Estrone-3-sulfate