Table 5

Segment and tissue specificity of transporters along the A-P and crypt-villus axis.

Transporter

Segment-Specificitya,M

Segment-Specificitya,R

Tissue-Specificityb


Duodenum

Jejunum

Ileum

Colon


Abca1

D=J=I=C

J=I=C>D

Crypts>Villi

ND

ND

ND

Abcc1

D=J=I=C

I=C>D=J

Crypts>Villi

Crypts>Villi

Crypts>Villi

ND

Abcc3

D=C>J=C>I=C

I=C>D=J

ND

Crypts>Villi

ND

Crypts>Villi

Abcg8

J>I=D>C

D=J=I>C

ND

Villi>Crypts

Villi>Crypts

ND

Slc10a2

I>C>D=J

I>C>D=J

ND

ND

Villi>Crypts

ND

Slc28a2

D>J>I>C

D=J=I>C

ND

Villi>Cryptsx

Villi>Cryptsx

ND

Slc2a1

C>D=J=I

C>I>D=J

ND

Crypts>Villi

Crypts>Villi

Crypts>Villix

Slc34a2

I>C>J>D

I>C=J>D

ND

Villi>Crypts

Villi>Crypts

Villi>Crypts

Slc5a8

C>I>D=J

C=I>J>D

ND

Villi>Crypts

ND

ND


aExpression in the four intestinal segments (D, J, I, C) was measured in whole tissue using microarrays (M) and RT-PCR (R) (n = 3, p ≤ 0.05). bTissue specificity was determined in laser dissected crypts and villi (n = 5, where p ≤ 0.05 or if indicated with a superscript "*" p ≤ 0.10). "ND" indicates that no significant difference in expression levels were measured between the crypt and villus epithelial cells.

Anderle et al. BMC Genomics 2005 6:69   doi:10.1186/1471-2164-6-69

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