The tumor suppressor parafibromin is required for posttranscriptional processing of histone mRNA.

Abstract:

:Parafibromin, encoded by the gene HRPT2, is a tumor suppressor protein associated with the RNA polymerase II-associated complex, Paf1 complex. HRPT2 mutations were first identified in patients with the multiple endocrine neoplasia syndrome, hyperparathyroidism-jaw tumor (HPT-JT) syndrome, and have also been found in sporadic parathyroid and renal tumors. However, the mechanisms by which parafibromin suppresses tumor formation remain unknown. In this study, we identify a novel role of parafibromin in the regulation of replication-dependent histones. Both in vitro and in vivo analyses reveal a posttranscriptional role of parafibromin in histone mRNA processing. Downregulation of parafibromin through RNA interference or in vivo mutations lead to uncleaved histone mRNA with polyadenylated tails. These results indicate that parafibromin regulates the 3' processing of histone RNA, an essential component of the cell cycle.

journal_name

Mol Carcinog

journal_title

Molecular carcinogenesis

authors

Farber LJ,Kort EJ,Wang P,Chen J,Teh BT

doi

10.1002/mc.20591

subject

Has Abstract

pub_date

2010-03-01 00:00:00

pages

215-23

issue

3

eissn

0899-1987

issn

1098-2744

journal_volume

49

pub_type

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