|
|
||||||||
Section of Digestive and Liver Diseases, Department of Medicine, University of Illinois at Chicago and the West Side Veterans Affairs Medical Center, Chicago, Illinois 60612
The short-chain fatty acid
butyrate was readily taken up by Caco-2 cells. Transport exhibited
saturation kinetics, was enhanced by low extracellular pH, and was
Na+ independent. Butyrate uptake was unaffected by DIDS;
however,
-cyano-4-hydroxycinnamate and the butyrate analogs
propionate and L-lactate significantly inhibited uptake.
These results suggest that butyrate transport by Caco-2 cells is
mediated by a transporter belonging to the monocarboxylate transporter
family. We identified five isoforms of this transporter, MCT1, MCT3,
MCT4, MCT5, and MCT6, in Caco-2 cells by PCR, and MCT1 was found to be
the most abundant isoform by RNase protection assay. Transient
transfection of MCT1, in the antisense orientation, resulted in
significant inhibition of butyrate uptake. The cells fully recovered
from this inhibition by 5 days after transfection. In conclusion, our data showed that the MCT1 transporter may play a major role in the
transport of butyrate into Caco-2 cells.
short-chain fatty acids; intestinal absorption; antisense cDNA
This article has been cited by other articles:
![]() |
D. T. Thwaites and C. M. H. Anderson H+-coupled nutrient, micronutrient and drug transporters in the mammalian small intestine Exp Physiol, July 1, 2007; 92(4): 603 - 619. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. Graham, I. Gatherar, I. Haslam, M. Glanville, and N. L. Simmons Expression and localization of monocarboxylate transporters and sodium/proton exchangers in bovine rumen epithelium Am J Physiol Regulatory Integrative Comp Physiol, February 1, 2007; 292(2): R997 - R1007. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. Kirat, J. Masuoka, H. Hayashi, H. Iwano, H. Yokota, H. Taniyama, and S. Kato Monocarboxylate transporter 1 (MCT1) plays a direct role in short-chain fatty acids absorption in caprine rumen J. Physiol., October 15, 2006; 576(2): 635 - 647. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. Borthakur, R. K. Gill, K. Hodges, K. Ramaswamy, G. Hecht, and P. K. Dudeja Enteropathogenic Escherichia coli inhibits butyrate uptake in Caco-2 cells by altering the apical membrane MCT1 level Am J Physiol Gastrointest Liver Physiol, January 1, 2006; 290(1): G30 - G35. [Abstract] [Full Text] [PDF] |
||||
![]() |
R. K. Gill, S. Saksena, W. A. Alrefai, Z. Sarwar, J. L. Goldstein, R. E. Carroll, K. Ramaswamy, and P. K. Dudeja Expression and membrane localization of MCT isoforms along the length of the human intestine Am J Physiol Cell Physiol, October 1, 2005; 289(4): C846 - C852. [Abstract] [Full Text] [PDF] |
||||
![]() |
C. Hadjiagapiou, A. Borthakur, R. Y. Dahdal, R. K. Gill, J. Malakooti, K. Ramaswamy, and P. K. Dudeja Role of USF1 and USF2 as potential repressor proteins for human intestinal monocarboxylate transporter 1 promoter Am J Physiol Gastrointest Liver Physiol, June 1, 2005; 288(6): G1118 - G1126. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Vidyasagar, C. Barmeyer, J. Geibel, H. J. Binder, and V. M. Rajendran Role of short-chain fatty acids in colonic HCO3 secretion Am J Physiol Gastrointest Liver Physiol, June 1, 2005; 288(6): G1217 - G1226. [Abstract] [Full Text] [PDF] |
||||
![]() |
W. A. Alrefai, S. Tyagi, R. Gill, S. Saksena, C. Hadjiagapiou, F. Mansour, K. Ramaswamy, and P. K. Dudeja Regulation of butyrate uptake in Caco-2 cells by phorbol 12-myristate 13-acetate Am J Physiol Gastrointest Liver Physiol, February 1, 2004; 286(2): G197 - G203. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Tyagi, J. Venugopalakrishnan, K. Ramaswamy, and P. K. Dudeja Mechanism of n-butyrate uptake in the human proximal colonic basolateral membranes Am J Physiol Gastrointest Liver Physiol, April 1, 2002; 282(4): G676 - G682. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Lal, A. J. Kirkup, A. M. Brunsden, D. G. Thompson, and D. Grundy Vagal afferent responses to fatty acids of different chain length in the rat Am J Physiol Gastrointest Liver Physiol, October 1, 2001; 281(4): G907 - G915. [Abstract] [Full Text] [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| Visit Other APS Journals Online |