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Updated: Jun 20, 2026

Methods to Discover Alternative Promoter Usage and Transcriptional Regulation of Murine Bcrp1

Methods to Discover Alternative Promoter Usage and Transcriptional Regulation of Murine Bcrp1

Published on: May 27, 2016

Blimp-1/Prdm1 alternative promoter usage during mouse development and plasma cell differentiation.

Marc A J Morgan¹, Erna Magnusdottir, Tracy C Kuo

¹University of Oxford, Sir William Dunn School of Pathology, South Parks Road, Oxford OX1 3RE, United Kingdom.

Molecular and Cellular Biology

|September 10, 2009

Summary

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The Blimp-1/Prdm1 gene has multiple promoters, but only one is essential for B cell function. NF-kappaB signaling is crucial for Blimp-1/Prdm1 induction in B cells, impacting antibody production.

Area of Science:

Molecular Biology
Immunology
Developmental Biology

Background:

The zinc-finger PR domain transcriptional repressor Blimp-1/Prdm1 is vital for various developmental and immune processes.
The mouse Prdm1 gene possesses multiple alternative promoter regions influencing its expression.

Purpose of the Study:

To investigate the functional significance of alternative promoter regions of the mouse Prdm1 gene in vivo.
To elucidate the role of NF-kappaB signaling in Prdm1 induction and its impact on B cell differentiation.

Main Methods:

Generation of targeted deletions in mice to selectively remove specific Prdm1 transcriptional start sites.
Analysis of Prdm1 expression and B cell function in knockout mice following lipopolysaccharide stimulation.

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Last Updated: Jun 20, 2026

Methods to Discover Alternative Promoter Usage and Transcriptional Regulation of Murine Bcrp1

Methods to Discover Alternative Promoter Usage and Transcriptional Regulation of Murine Bcrp1

Published on: May 27, 2016

Proliferation and Differentiation of Murine Myeloid Precursor 32D/G-CSF-R Cells

Proliferation and Differentiation of Murine Myeloid Precursor 32D/G-CSF-R Cells

Published on: February 21, 2018

Main Results:

Mice lacking the previously described first exon of Prdm1 develop normally and are fertile, indicating dispensability for overall development.
NF-kappaB binding sites within the Prdm1 gene are essential for its induction; mutant B cells fail to express Prdm1 and differentiate into antibody-secreting cells.
An alternative distal promoter (approximately 70 kb upstream) is dispensable, with its deletion showing no effect on embryonic or adult tissue expression.

Conclusions:

The Prdm1 gene exhibits complex transcriptional regulation with functionally distinct promoter regions.
NF-kappaB signaling is a critical upstream regulator of Prdm1 expression, particularly for B cell differentiation and antibody production.
Targeted deletion of specific Prdm1 promoters reveals context-dependent functional requirements, highlighting the importance of NF-kappaB in immune responses.