Original Article
Copyright ©2011 Baishideng Publishing Group Co., Limited. All rights reserved.
World J Stem Cells. Jul 26, 2011; 3(7): 63-69
Published online Jul 26, 2011. doi: 10.4252/wjsc.v3.i7.63
Identification of circulating CD90+ CD73+ cells in cirrhosis of liver
Mitnala Sasikala, Pugazhelthi Surya, Gaddipati Radhika, Pondugala Pavan Kumar, Mekala Subba Rao, Rathindra Mohan Mukherjee, Padaki Nagaraja Rao, D Nageshwar Reddy
Mitnala Sasikala, Pugazhelthi Surya, Gaddipati Radhika, Pondugala Pavan Kumar, Mekala Subba Rao, Rathindra Mohan Mukherjee, Institute of Basic Sciences and Translational Research, Asian Health Care Foundation, Hyderabad 500082, India
Padaki Nagaraja Rao, D Nageshwar Reddy, Asian Institute of Gastroenterology, Hyderabad 500082, India
Author contributions: Sasikala M designed the study, analyzed data and wrote the manuscript; Surya P, Radhika G and Pavan Kumar P performed the majority of experiments; Rao MS and Mukherjee RM were involved in editing the manuscript; Rao PN and Reddy DN co-ordinated and were involved in selection of patients and final approval of the manuscript.
Supported by Asian Health Care Foundation
Correspondence to: Mitnala Sasikala, PhD, Senior Scientist, Institute of Basic Sciences and Translational Research, Asian Healthcare Foundation, 6-3-661, Somajiguda, Hyderabad 500082, India. aigres.mit@gmail.com
Telephone: +91-40-23378888-702 Fax: +91-40-23324255
Received: October 9, 2010
Revised: January 15, 2011
Accepted: January 25, 2011
Published online: July 26, 2011
Abstract

AIM: To identify circulating CD90+ CD73+ CD45- cells and evaluate their in vitro proliferating abilities.

METHODS: Patients with cirrhosis (n = 43), and healthy volunteers (n = 40) were recruited to the study. Mononuclear cells were isolated and cultured from the peripheral blood of controls and cirrhosis patients. Fibroblast-like cells that appeared in cultures were analyzed for morphological features, enumerated by flow cytometry and confirmed by immunocytochemistry (ICC). Colony forming efficiency (CFE) of these cells was assessed and expressed as a percentage.

RESULTS: In comparison to healthy volunteers, cells obtained from cirrhotic patients showed a significant increase (P < 0.001) in the percentage of CD90+ CD73+ CD45- cells in culture. Cultured cells also showed 10 fold increases in CFE. Flow cytometry and ICC confirmed that the proliferating cells expressed CD90+ CD73+ in the cultures from cirrhosis patients.

CONCLUSION: These results indicate the presence of circulating CD90+ CD73+ CD45- cells in patients with liver cirrhosis that have the potential to proliferate at a higher rate.

Keywords: CD90+ CD73+ CD45- cells; Liver cirrhosis; Proliferation; Colony forming efficiency