TY - JOUR
T1 - Identification of the putative intestinal stem cell marker doublecortin and CaM kinase-like-1 in Barrett's esophagus and esophageal adenocarcinoma
AU - Vega, Kenneth J.
AU - May, Randal
AU - Sureban, Sripathi M.
AU - Lightfoot, Stan A.
AU - Qu, Dongfeng
AU - Reed, Alessandra
AU - Weygant, Nathaniel
AU - Ramanujam, Rama
AU - Souza, Rhonda
AU - Madhoun, Mohammad
AU - Whorton, Joshua
AU - Anant, Shrikant
AU - Meltzer, Stephen J.
AU - Houchen, Courtney W.
PY - 2012/4
Y1 - 2012/4
N2 - Background and Aim: In Barrett's esophagus (BE), the normal esophageal squamous epithelium is replaced with a specialized metaplastic columnar epithelium. BE is a premalignant lesion that can progress to esophageal adenocarcinoma (EAC). Currently, there are no early molecular indicators that would predict progression from BE to EAC. As the only permanent residents of the epithelium, stem cells have been implicated in this metaplastic progression. The aim of the present study was to determine the expression of doublecortin and CaM kinase-like-1 (DCAMKL-1) and other putative gastrointestinal stem cell markers in normal esophageal mucosa (NEM), BE, and EAC. Methods: Human NEM, BE, EAC, and multitissue microarrays were analyzed for DCAMKL-1, and immunohistochemically scored based on staining intensity and tissue involvement, with epithelia and stroma scored separately. Total RNA isolated from BE and paired NEM was subjected to real-time reverse-transcription-polymerase chain reaction analysis for DCAMKL-1, leucine-rich repeat-containing G-protein-coupled receptor (LGR5), and Musashi-1 (Msi-1) mRNA expression. Results: DCAMKL-1 was minimally expressed in squamous NEM, but increased in BE (with and without dysplasia) and EAC tissues. In EAC, we found increased stromal DCAMKL-1 staining compared to adjacent epithelia. Within the submucosa of dysplastic BE tissues, an increase in the endothelial cell expression of DCAMKL-1 was observed. Finally, an upregulation of DCAMKL-1, LGR5, and Msi-1 mRNA was seen in BE compared to squamous NEM. Conclusions: In the present study, we report the progressive increase of DCAMKL-1 expression in BE from dysplasia to EAC. Furthermore, there was an increase in putative stem cell markers DCAMKL-1, LGR5, and Msi-1 mRNA. Taken together, these data suggest that the regulation of resident stem cells might play an important role in the progression of BE to EAC.
AB - Background and Aim: In Barrett's esophagus (BE), the normal esophageal squamous epithelium is replaced with a specialized metaplastic columnar epithelium. BE is a premalignant lesion that can progress to esophageal adenocarcinoma (EAC). Currently, there are no early molecular indicators that would predict progression from BE to EAC. As the only permanent residents of the epithelium, stem cells have been implicated in this metaplastic progression. The aim of the present study was to determine the expression of doublecortin and CaM kinase-like-1 (DCAMKL-1) and other putative gastrointestinal stem cell markers in normal esophageal mucosa (NEM), BE, and EAC. Methods: Human NEM, BE, EAC, and multitissue microarrays were analyzed for DCAMKL-1, and immunohistochemically scored based on staining intensity and tissue involvement, with epithelia and stroma scored separately. Total RNA isolated from BE and paired NEM was subjected to real-time reverse-transcription-polymerase chain reaction analysis for DCAMKL-1, leucine-rich repeat-containing G-protein-coupled receptor (LGR5), and Musashi-1 (Msi-1) mRNA expression. Results: DCAMKL-1 was minimally expressed in squamous NEM, but increased in BE (with and without dysplasia) and EAC tissues. In EAC, we found increased stromal DCAMKL-1 staining compared to adjacent epithelia. Within the submucosa of dysplastic BE tissues, an increase in the endothelial cell expression of DCAMKL-1 was observed. Finally, an upregulation of DCAMKL-1, LGR5, and Msi-1 mRNA was seen in BE compared to squamous NEM. Conclusions: In the present study, we report the progressive increase of DCAMKL-1 expression in BE from dysplasia to EAC. Furthermore, there was an increase in putative stem cell markers DCAMKL-1, LGR5, and Msi-1 mRNA. Taken together, these data suggest that the regulation of resident stem cells might play an important role in the progression of BE to EAC.
KW - Barrett's esophagus
KW - Cancer
KW - Doublecortin and CaM kinase-like-1
KW - Esophageal adenocarcinoma
KW - Esophagus
KW - Leucine-rich repeat-containing G-protein-coupled receptor
KW - Musashi-1
KW - Stem cell marker
UR - http://www.scopus.com/inward/record.url?scp=84858832154&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84858832154&partnerID=8YFLogxK
U2 - 10.1111/j.1440-1746.2011.06928.x
DO - 10.1111/j.1440-1746.2011.06928.x
M3 - Article
C2 - 21916995
AN - SCOPUS:84858832154
SN - 0815-9319
VL - 27
SP - 773
EP - 780
JO - Journal of Gastroenterology and Hepatology (Australia)
JF - Journal of Gastroenterology and Hepatology (Australia)
IS - 4
ER -
