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Updated: Jan 9, 2026

Regulation of Hormone Secretion

Regulation of Hormone Secretion

Common markers of proliferation.

Michael L Whitfield¹, Lacy K George, Gavin D Grant

¹Department of Genetics and Norris Cotton Cancer Center, Dartmouth Medical School, 7400 Remsen, Hanover, New Hampshire 03755, USA. whitfield@dartmouth.edu

Nature Reviews. Cancer

|February 24, 2006

Summary

This summary is machine-generated.

Gene expression differences between normal and tumor tissues often reflect cell proliferation rates. This

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Last Updated: Jan 9, 2026

Regulation of Hormone Secretion

Regulation of Hormone Secretion

Hormonal Regulation of Digestion

Hormonal Regulation of Digestion

Overview of Secretory Vesicles

Overview of Secretory Vesicles

Area of Science:

Oncology
Molecular Biology
Genomics

Background:

Microarray analysis reveals significant gene expression differences between normal and tumor tissues.
These differences are primarily attributed to variations in cell proliferation rates.
A 'proliferation signature' in gene expression is consistently observed across different cell populations with varying proliferation rates.

Purpose of the Study:

To investigate the role of the 'proliferation signature' in understanding the cell cycle.
To explore the implications of the proliferation signature in cancer pathogenesis.
To assess the potential of the proliferation signature as a biomarker for cancer diagnosis and prognosis.

Main Methods:

Comparative gene expression profiling using microarray analysis.
Analysis of messenger RNA (mRNA) samples from normal and tumor tissues.
Identification and characterization of genes within the 'proliferation signature'.

Main Results:

The most substantial gene expression differences between normal and tumor samples involve genes controlling cell proliferation.
The 'proliferation signature' is a common finding when comparing cell populations with different proliferation rates.
While specific genes vary, the signature consistently comprises genes fundamental to cell proliferation.

Conclusions:

The 'proliferation signature' is a key indicator of differential proliferation rates between normal and tumor cells.
Understanding this signature can enhance insights into cell cycle regulation and cancer development.
The proliferation signature holds potential as a diagnostic and prognostic biomarker in oncology.