Related Experiment Video
Updated: Aug 16, 2026

Retroviral Scanning: Mapping MLV Integration Sites to Define Cell-specific Regulatory Regions
Published on: May 28, 2017
Retroviral integration sites correlate with expressed genes in hematopoietic stem cells
Wolfgang Wagner1, Stephanie Laufs, Jonathon Blake
1Department of Internal Medicine V, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany.
Abstract:
In this study, we analyzed whether retroviral integration sites in repopulating hematopoietic cells correlate with genes expressed in fractions enriched in hematopoietic stem cells (HSCs). We have previously described microarray studies of two populations enriched in HSCs: CD34+/CD38- and the slow dividing fraction of CD34+/CD38- cells (SDF). Furthermore, we demonstrated that oncoretroviral integrations in severe combined immunodeficient repopulating cells are preferentially located near the transcription start. Here, we have identified 117 corresponding cDNA clones on our micro-array representing genes with retroviral integration sites. These genes revealed a higher mean signal intensity in comparison with either all genes on the array or a subset of control genes with retroviral integrations in HeLa cells. Furthermore, these genes demonstrated a higher expression in CD34+/CD38- cells and SDF. The association of gene expression and retrovirally targeted genes observed here will help to elucidate the molecular characteristics of primitive repopulating hematopoietic cells.
Related Concept Videos
Size and Structure of Viral Genomes
Non-LTR Retrotransposons
Mechanisms of Retrovirus-induced Cancers
Mechanisms of Retrovirus-induced Cancers
Retroviruses
LTR Retrotransposons
The internal coding region of LTR retrotransposons and their mechanism of transposition closely resembles a...

