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Depletion of the SR-Related Protein TbRRM1 Leads to Cell Cycle Arrest and Apoptosis-Like Death in Trypanosoma brucei.
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- Author(s): Levy GV;Levy GV; Bañuelos CP; Bañuelos CP; Níttolo AG; Níttolo AG; Ortiz GE; Ortiz GE; Mendiondo N; Mendiondo N; Moretti G; Moretti G; Tekiel VS; Tekiel VS; Sánchez DO; Sánchez DO
- Source:
PloS one [PLoS One] 2015 Aug 18; Vol. 10 (8), pp. e0136070. Date of Electronic Publication: 2015 Aug 18 (Print Publication: 2015).- Publication Type:
Journal Article; Research Support, Non-U.S. Gov't- Language:
English - Source:
- Additional Information
- Source: Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE
- Publication Information: Original Publication: San Francisco, CA : Public Library of Science
- Subject Terms: Apoptosis* ; Cell Cycle Checkpoints*; Protozoan Proteins/*metabolism ; RNA-Binding Proteins/*antagonists & inhibitors ; Trypanosoma brucei brucei/*pathogenicity ; Trypanosomiasis/*pathology; Animals ; Arginine/metabolism ; Blotting, Northern ; Blotting, Western ; Cell Proliferation ; Cells, Cultured ; Fluorescent Antibody Technique ; Membrane Potential, Mitochondrial ; Protozoan Proteins/genetics ; RNA, Messenger/genetics ; RNA-Binding Proteins/genetics ; RNA-Binding Proteins/metabolism ; Real-Time Polymerase Chain Reaction ; Reverse Transcriptase Polymerase Chain Reaction ; Serine/metabolism ; Trypanosomiasis/parasitology
- Abstract: Arginine-Serine (RS) domain-containing proteins are RNA binding proteins with multiple functions in RNA metabolism. In mammalian cells this group of proteins is also implicated in regulation and coordination of cell cycle and apoptosis. In trypanosomes, an early branching group within the eukaryotic lineage, this group of proteins is represented by 3 members, two of them are SR proteins and have been recently shown to be involved in rRNA processing as well as in pre-mRNA splicing and stability. Here we report our findings on the 3rd member, the SR-related protein TbRRM1. In the present study, we showed that TbRRM1 ablation by RNA-interference in T. brucei procyclic cells leads to cell-cycle block, abnormal cell elongation compatible with the nozzle phenotype and cell death by an apoptosis-like mechanism. Our results expand the role of the trypanosomal RS-domain containing proteins in key cellular processes such as cell cycle and apoptosis-like death, roles also carried out by the mammalian SR proteins, and thus suggesting a conserved function in this phylogenetically conserved protein family.
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- Accession Number: 0 (Protozoan Proteins)
0 (RNA, Messenger)
0 (RNA-Binding Proteins)
0 (RRM1 protein, Trypanosoma brucei)
452VLY9402 (Serine)
94ZLA3W45F (Arginine) - Publication Date: Date Created: 20150819 Date Completed: 20160510 Latest Revision: 20181113
- Publication Date: 20240104
- Accession Number: PMC4540419
- Accession Number: 10.1371/journal.pone.0136070
- Accession Number: 26284933
- Source:
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