Zhengdeng Lei, PhD

Zhengdeng Lei, PhD

2009 - Present Research Fellow at Duke-NUS, Singapore
2007 - 2009 High Throughput Computational Analyst, Memorial Sloan-Kettering Cancer Center, New York
2003 - 2007 PhD, Bioinformatics, University of Illinois at Chicago

Sunday, October 16, 2011

BFRM+NTP

top 1/3 vs bottom 1/3
use NTP and gene signature to predict the direction.

Thursday, October 13, 2011

human gastric precancerous lesions

http://www.weibing.com.cn/html/mxqbxwy/
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1766652/pdf/v045p000I5.pdf
http://www.google.com.sg/url?sa=t&source=web&cd=2&ved=0CC0QFjAB&url=http%3A%2F%2Fwww.ncbi.nlm.nih.gov%2Fpmc%2Farticles%2FPMC1146204%2F&ei=yNuWTtO4BsLsrAeSvqWbBA&usg=AFQjCNHwRAwFh8ipHDTFVBzNx-r7G-dbkg&sig2=kbm6v1zThHgCqzhCMyg13Q


chronic superficial gastritis (CSG, 16),
chronic atrophic gastritis (CAG, 16), intestinal metaplasia
(IM, 35), gastric epithelial dysplasia (GED, 23) and gastric
cancer (CA, 25), and conditions of H.pylori infection

Tuesday, October 11, 2011

http://en.wikipedia.org/wiki/Carcinogenesis

A new way of looking at carcinogenesis comes from integrating the ideas of developmental biology into oncology. The cancer stem cell hypothesis proposes that the different kinds of cells in a heterogeneous tumor arise from a single cell, termed Cancer Stem Cell. Cancer stem cells may arise from transformation of adult stem cells or differentiated cells within a body. These cells persist as a subcomponent of the tumor and retain key stem cell properties. They give rise to a variety of cells, are capable of self-renewal and homeostatic control.[25]Furthermore, the relapse of cancer and the emergence of metastasis are also attributed to these cells. The cancer stem cell hypothesis does not contradict earlier concepts of carcinogenesis.
A new way of looking at carcinogenesis comes from integrating the ideas of developmental biology into oncology. The cancer stem cell hypothesis proposes that the different kinds of cells in a heterogeneous tumor arise from a single cell, termed Cancer Stem Cell. Cancer stem cells may arise from transformation of adult stem cells or differentiated cells within a body. These cells persist as a subcomponent of the tumor and retain key stem cell properties. They give rise to a variety of cells, are capable of self-renewal and homeostatic control.[25]Furthermore, the relapse of cancer and the emergence of metastasis are also attributed to these cells. The cancer stem cell hypothesis does not contradict earlier concepts of carcinogenesis.