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Updated: Jul 8, 2026

MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as a Novel Detection and Quantification Method

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Pvt1-encoded microRNAs in oncogenesis.

Gabriele B Beck-Engeser¹, Amy M Lum, Konrad Huppi

¹Department of Microbiology and Immunology, University of California, San Francisco, CA 94143-0414, USA. Gabriele.Beck-Engeser@ucsf.edu

|January 16, 2008

Summary

The Pvt1 locus, encoding microRNAs, is crucial in T-cell lymphomagenesis, similar to Myc. Overexpression of Pvt1 transcripts and microRNAs like mmu-miR-1204 occurs in T-cell lymphomas, suggesting a shared pathway with Myc.

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Area of Science:

Oncology
Molecular Biology
Genetics

Background:

The Pvt1 locus's role in Burkitt's lymphoma and plasmacytoma oncogenesis was unclear.
Translocations involving Pvt1 and immunoglobulin loci are common in these tumors.
Recent findings suggest non-coding microRNAs encoded by Pvt1 play a regulatory role.

Purpose of the Study:

To investigate the functional significance of the Pvt1 locus and its encoded microRNAs in T-cell lymphomagenesis.
To determine the relationship between Pvt1, Myc, and T-cell lymphoma development.

Main Methods:

Analysis of microRNA encoding within the mouse Pvt1 locus.
Studying T-cell lymphomas induced by retroviral insertions into the Pvt1 locus.
Examining co-mutations in over 2,000 tumors, focusing on Pvt1 and Myc loci.

Main Results:

The mouse Pvt1 locus encodes multiple microRNAs, including mmu-miR-1204.
Pvt1 transcripts and mmu-miR-1204 are overexpressed in mouse T-cell lymphomas.
No tumors exhibited insertions in both Myc and Pvt1 loci, despite frequent mutations elsewhere.

Conclusions:

Pvt1 and its microRNAs are as significant as Myc in T-cell lymphomagenesis and activation.
Pvt1 and Myc likely function within the same oncogenic pathway.
The Pvt1 locus plays a critical role in T-cell lymphoma development.