Non-genetic heterogeneity of cells in development: more than just noise

Author:

Huang Sui1

Affiliation:

1. Institute for Biocomplexity and Informatics, Biological Sciences Bldg, Room 539D, University of Calgary, Calgary, AB T3A 0Y1, Canada

Abstract

Cell-to-cell variability of gene expression in clonal populations of mammalian cells is ubiquitous. However, because molecular biologists habitually assume uniformity of the cell populations that serve as starting material for experimental analysis, attention to such non-genetic heterogeneity has been scant. As awareness of, and interest in, understanding its biological significance increases, this Primer attempts to clarify the confusing terminologies used in an emerging field that often conflates heterogeneity with noise, and provides a qualitative introduction to the fundamental dynamic principles that underlie heterogeneity. It thus aims to present a useful conceptual framework to organize, analyze and communicate observations made at the resolution of individual cells that indicate that heterogeneity of cell populations plays a biological role, such as in multipotency and cell fate decision.

Publisher

The Company of Biologists

Subject

Developmental Biology,Molecular Biology

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