scholarly journals Global Genetic Robustness of the Alternative Splicing Machinery in Caenorhabditis elegans

Genetics ◽  
2010 ◽  
Vol 186 (1) ◽  
pp. 405-410 ◽  
Author(s):  
Yang Li ◽  
Rainer Breitling ◽  
L. Basten Snoek ◽  
K. Joeri van der Velde ◽  
Morris A. Swertz ◽  
...  
2011 ◽  
Vol 108 (51) ◽  
pp. 20790-20795 ◽  
Author(s):  
D. A. Glauser ◽  
B. E. Johnson ◽  
R. W. Aldrich ◽  
M. B. Goodman

2007 ◽  
Vol 24 (4) ◽  
pp. 909-917 ◽  
Author(s):  
Jakob Lewin Rukov ◽  
Manuel Irimia ◽  
Søren Mørk ◽  
Viktor Karlovich Lund ◽  
Jeppe Vinther ◽  
...  

2019 ◽  
Author(s):  
Ling-Yu Wang ◽  
Sheng-Jun Xiao ◽  
Hiroyuki Kunimoto ◽  
Kazuaki Tokunaga ◽  
Hirotada Kojima ◽  
...  

AbstractRBM10 is an RNA-binding protein that regulates alternative splicing (AS). This protein localizes to the extra-nucleolar nucleoplasm and S1-1 nuclear bodies (NBs). We investigated the biological significance of RBM10 localization to S1-1 NBs, which is poorly understood. Our analyses revealed that RBM10 possesses two S1-1 NB-targeting sequences (NBTSs), one in the KEKE motif region and another in the C2H2 Zn finger (ZnF). These NBTSs acted synergistically and were sufficient for localization of RBM10 to S1-1 NBs. Furthermore, the C2H2 ZnF not only acted as an NBTS, but was also essential for regulation of AS by RBM10. RBM10 did not participate in S1-1 NB formation. We confirmed the previous finding that localization of RBM10 to S1-1 NBs increases as cellular transcriptional activity decreases and vice versa. These results indicate that RBM10 is a transient component of S1-1 NBs and is sequestered in these structures via its NBTSs when cellular transcription decreases. We propose that the NB-targeting activity of the C2H2 ZnF is induced when it is not bound to pre-mRNA or the splicing machinery complex under conditions of reduced transcription.


2021 ◽  
Vol 22 (18) ◽  
pp. 10115
Author(s):  
Rahaba Marima ◽  
Rodney Hull ◽  
Georgios Lolas ◽  
Konstantinos N. Syrigos ◽  
Minah Kgoebane-Maseko ◽  
...  

Cervical cancer is a public health problem and has devastating effects in low-to-middle-income countries (LTMICs) such as the sub-Saharan African (SSA) countries. Infection by the human papillomavirus (HPV) is the main cause of cervical cancer. HIV positive women have higher HPV prevalence and cervical cancer incidence than their HIV negative counterparts do. Concurrent HPV/HIV infection is catastrophic, particularly to African women due to the high prevalence of HIV infections. Although various studies show a relationship between HPV, HIV and cervical cancer, there is still a gap in the knowledge concerning the precise nature of this tripartite association. Firstly, most studies show the relationship between HPV and cervical cancer at genomic and epigenetic levels, while the transcriptomic landscape of this relationship remains to be elucidated. Even though many studies have shown HPV/HIV dual viral pathogenesis, the dual molecular oncoviral effects on the development of cervical cancer remains largely uncertain. Furthermore, the effect of highly active antiretroviral therapy (HAART) on the cellular splicing machinery is unclear. Emerging evidence indicates the vital role played by host splicing events in both HPV and HIV infection in the development and progression to cervical cancer. Therefore, decoding the transcriptome landscape of this tripartite relationship holds promising therapeutic potential. This review will focus on the link between cellular splicing machinery, HPV, HIV infection and the aberrant alternative splicing events that take place in HIV/HPV-associated cervical cancer. Finally, we will investigate how these aberrant splicing events can be targeted for the development of new therapeutic strategies against HPV/HIV-associated cervical cancer.


2021 ◽  
Author(s):  
Samantha C Chomyshen ◽  
Cheng-Wei Wu

Splicing of pre-mRNA is an essential process for dividing cells and splicing defects have been linked to aging and various chronic diseases. Environmental stress has recently been shown to alter splicing fidelity and molecular mechanisms that protect against splicing disruption remains unclear. Using an in vivo RNA splicing reporter, we performed a genome-wide RNAi screen in Caenorhabditis elegans and found that protein translation suppression via silencing of the conserved initiation factor 4G (IFG-1/eIF4G) protects against cadmium-induced splicing disruption. Transcriptome analysis of an ifg-1 deficient mutant revealed an overall increase in splicing fidelity and resistance towards cadmium-induced alternative splicing compared to the wild-type. We found that the ifg-1 mutant up-regulates >80 RNA splicing regulatory genes that are controlled by the TGF-β transcription factor SMA-2. The extended lifespan of the ifg-1 mutant is partially reduced upon sma-2 depletion and completely nullified when core spliceosome genes including snr-1, snr-2, and uaf-2 are knocked down. Together, these data describe a molecular mechanism that provides resistance towards stress-induced alternative splicing and demonstrate an essential role for RNA homeostasis in promoting longevity in a translation-compromised mutant.


PLoS Genetics ◽  
2012 ◽  
Vol 8 (7) ◽  
pp. e1002827 ◽  
Author(s):  
Long Ma ◽  
Xiaoyang Gao ◽  
Jintao Luo ◽  
Liange Huang ◽  
Yanling Teng ◽  
...  

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