Breast tissue may be most susceptible to environmental carcinogens during rapid cell proliferation and before complete cellular differentiation, that is, between puberty and completion of a woman's first pregnancy.
A systems level understanding arises via linkage between cellular differentiation and network architecture, revealed by in vitro and in vivo analyses, while computational modeling reveals how single cell dynamics and connectivity shape the sparsification process.
These viral proteins act as multifaceted devices that re-program host cell functions at multiple levels, weakening the normally tight links between cellular differentiation and proliferation.
The seminal finding that the differentiation-inducing cytosine analogue 2'-deoxy-5-azacytidine (decitabine, DAC) acts as an effective inhibitor of DNA methyltransferases provided an important link between cellular differentiation and epigenetic regulation [13].
Changes in FOXO function could tip the balance between cellular differentiation and neoplastic transformation [ 18- 20].
However, common to all cancers are the loss of cellular differentiation and the imbalance between proliferation and cell death; these processes, involved in carcinogenesis, due to its significance, are increasingly being targeted for study.
Our data suggest an association between PI3K and cellular differentiation.
Regulation of noncancerous stem cells is a complex balance between cellular proliferation, cellular differentiation, and cell death via various signaling pathways including Sonic Hedgehog Shh, Notch, and Wnt.
qRT-PCR examination of the mRNA expression of these genes in additional cell lines yielded close correlation between their differential expression and the degree of cellular differentiation.
Our work provides a list of DNMT3A-regulated targets and a mechanistic link between de novo DNAme, cellular differentiation, and human MN function.
