TY - JOUR
T1 - mRNA expression of the ATP-binding cassette transporter subfamily A (ABCA) in rat and human brain capillary endothelial cells
AU - Ohtsuki, Sumio
AU - Watanabe, Yuki
AU - Hori, Satoko
AU - Suzuki, Hiroya
AU - Bhongsatiern, Jiraganya
AU - Fujiyoshi, Masachika
AU - Kamoi, Mayu
AU - Kamiya, Naoko
AU - Takanaga, Hitomi
AU - Terasaki, Tetsuya
PY - 2004/9
Y1 - 2004/9
N2 - The ATP-binding cassette transporter subfamily A (ABCA) consists of the transporters mediating cholesterol release and regulated by cholesterol. As about 25% of total body cholesterol exists in the brain, sterol homeostasis is an important issue as far as central nervous system function is concerned. The purpose of this study was to clarify the mRNA expression of ABCA subtypes at the blood-brain barrier (BBB) using cultured rat and human brain capillary endothelial cells, TR-BBB and hBME cells, respectively. mRNA expression of ABCA1, 2, 3, 4, 5, 6, 7 and 8/9 was detected in TR-BBB cells. In the brain capillary-rich fraction, mRNA expression of ABCA1, 2, 3, 4, 5, 7 and 8/9 was detected. ABCA2 and 5 mRNA were also detected in hBME cells. These results demonstrate, for the first time, that ABCA subtypes are expressed at the rat and/or human BBB. The expression of ABCA subtypes at the BBB is likely to contribute to sterol homeostasis in the central nervous system.
AB - The ATP-binding cassette transporter subfamily A (ABCA) consists of the transporters mediating cholesterol release and regulated by cholesterol. As about 25% of total body cholesterol exists in the brain, sterol homeostasis is an important issue as far as central nervous system function is concerned. The purpose of this study was to clarify the mRNA expression of ABCA subtypes at the blood-brain barrier (BBB) using cultured rat and human brain capillary endothelial cells, TR-BBB and hBME cells, respectively. mRNA expression of ABCA1, 2, 3, 4, 5, 6, 7 and 8/9 was detected in TR-BBB cells. In the brain capillary-rich fraction, mRNA expression of ABCA1, 2, 3, 4, 5, 7 and 8/9 was detected. ABCA2 and 5 mRNA were also detected in hBME cells. These results demonstrate, for the first time, that ABCA subtypes are expressed at the rat and/or human BBB. The expression of ABCA subtypes at the BBB is likely to contribute to sterol homeostasis in the central nervous system.
KW - ATP-binding cassette transporter subfamily A (ABCA)
KW - Blood-brain barrier (BBB)
KW - Brain capillary endothelial cells
KW - TR-BBB
KW - hBME
KW - mRNA expression
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UR - http://www.scopus.com/inward/citedby.url?scp=14844319827&partnerID=8YFLogxK
U2 - 10.1248/bpb.27.1437
DO - 10.1248/bpb.27.1437
M3 - Article
C2 - 15340233
AN - SCOPUS:14844319827
SN - 0918-6158
VL - 27
SP - 1437
EP - 1440
JO - Biological and Pharmaceutical Bulletin
JF - Biological and Pharmaceutical Bulletin
IS - 9
ER -