Semi quantitative expression analysis of MDR3, FIC1, BSEP, OATP-A, OATP-C,OATP-D, OATP-E and NTCP gene transcripts in 1st and 3rd trimester human placenta

Placenta. 2003 Jan;24(1):39-44. doi: 10.1053/plac.2002.0879.


Using real time RT-PCR, we have detected expression of seven genes that influence bile acid transport,MDR3, FIC1, BSEP, OATP-A, OATP-C, OATP-D and OATP-E, in normal human placenta. With the exception of OATP-C and OATP-E these genes were found to be differentially expressed in 1st trimester and 3rd trimester placentae. MDR3 gene expression was found to be up regulated four fold in 3rd trimester placentae compared to 1st trimester, OATP-A gene expression was down regulated eight fold, OATP-D was down regulated 17 fold, while FIC1 expression was reduced by 33 fold in the 3rd trimester. OATP-C and BSEP gene expression was not detected in the 3rd trimester placenta, while low levels of transcripts were detected in the 1st trimester placentae. Transcripts of the hepatic sinusoidal bile acid transporter, NTCP, were not detected in placenta.

MeSH terms

  • ATP Binding Cassette Transporter, Subfamily B / genetics
  • ATP Binding Cassette Transporter, Subfamily B / metabolism
  • ATP Binding Cassette Transporter, Subfamily B, Member 11
  • ATP-Binding Cassette Transporters / genetics
  • ATP-Binding Cassette Transporters / metabolism
  • Adenosine Triphosphatases / genetics
  • Adenosine Triphosphatases / metabolism
  • Adult
  • Bile Acids and Salts / metabolism
  • Carrier Proteins / genetics*
  • Carrier Proteins / metabolism
  • Down-Regulation
  • Female
  • Gene Expression Regulation, Developmental*
  • Humans
  • Membrane Transport Proteins*
  • Organic Anion Transporters / genetics
  • Organic Anion Transporters / metabolism
  • Organic Anion Transporters, Sodium-Dependent
  • Placenta / metabolism*
  • Pregnancy
  • Pregnancy Trimester, First
  • Pregnancy Trimester, Third
  • RNA, Messenger / metabolism
  • Reverse Transcriptase Polymerase Chain Reaction
  • Symporters
  • Transcription, Genetic*
  • Up-Regulation


  • ABCB11 protein, human
  • ATP Binding Cassette Transporter, Subfamily B
  • ATP Binding Cassette Transporter, Subfamily B, Member 11
  • ATP-Binding Cassette Transporters
  • Bile Acids and Salts
  • Carrier Proteins
  • Membrane Transport Proteins
  • Organic Anion Transporters
  • Organic Anion Transporters, Sodium-Dependent
  • RNA, Messenger
  • Symporters
  • sodium-bile acid cotransporter
  • multidrug resistance protein 3
  • Adenosine Triphosphatases
  • ATP8B1 protein, human