Proteomic analysis of colonic mucosal tissue from tuberculous and ulcerative colitis patients.
Changes in the expression profiles of specific proteins leads to serious human diseases, including colitis. The proteomic changes related to colitis and the differential expression between tuberculous (TC) and ulcerative colitis (UC) in colon tissue from colitis patients has not been defined. We therefore performed a proteomic analysis of human TC and UC mucosal tissue. Total protein was obtained from the colon mucosal tissue of normal, TC, and UC patients, and resolved by 2-dimensional electrophoresis (2-DE). The results were analyzed with PDQuest using silver staining. We used matrix-assisted laser desorption ionization time-of-flight/time-of-flight spectrometry (MALDI TOF/TOF) to identify proteins differentially expressed in TC and UC. Of the over 1,000 proteins isolated, three in TC tissue and two in UC tissue displayed altered expression when compared to normal tissue. Moreover, two proteins were differentially expressed in a comparative analysis between TC and UC. These were identified as mutant β-actin, α-enolase and Charcot-Leyden crystal protein. In particular, the expression of α-enolase was significantly greater in TC compared with normal tissue, but decreased in comparison to UC, implying that α-enolase may represent a biomarker for differential diagnosis of TC and UC. This study therefore provides a valuable resource for the molecular and diagnostic analysis of human colitis.
Department of Physiology, Kwandong University College of Medicine, Gangneung 210-701, Korea.
Seong-Chun
SC
Kwon
Kyung Jong
KJ
Won
Seoung Hyo
SH
Jung
Kang Pa
KP
Lee
Dong-Youb
DY
Lee
Eun-Seok
ES
Park
Bokyung
B
Kim
Gab Jin
GJ
Cheon
Koon Hee
KH
Han