Nav: Home

The role of the protein Rrm3 in the repair of breaks in DNA during replication

June 08, 2017

A research group from the University of Seville has revealed the role that the protein Rrm3 plays in the repair of breaks that occur during the replication of DNA, by using the yeast Saccharomyces cerevisiae as a model organism. This protein belongs to the human protein family PIF1, the mutations of which are known to be associated with a higher risk of tumorigenesis. This opens the possibility that the risk of suffering cancer might be due to the inability of the cell to repair correctly breaks in DNA that happen during replication.

The findings of this research, carried out by Sandra Muñoz Galván, María Luisa García Rubio, Pedro Ortega, José Francisco Ruiz, Sonia Jimeno, Benjamín Pardo, Belén Gómez González and Andrés Aguilera, have been brought together in the article A new role for Rrm3 in repair of replication-born DNA breakage by sister chromatid recombination published by the review PLoS Genetics in its May 2017 edition.

The replication of DNA is one of the cellular processes during which DNA is most vulnerable. During this stage, the replication forks can meet obstacles that cause their blockage or even the appearance of breaks in the DNA. The breaks in DNA that occur during replication require a specific mechanism for their repair, the recombination mechanism. In this project, it was shown that Rrm3, a protein that travels beside the replication forks, has a role in this process of repair by recombination, so avoiding genetic instability.

Understanding the physiological mechanisms that cause or, as in this case, prevent genetic instability is a basic question in Molecular Biology and Biomedicine which is of vital importance in the research against cancer, given that genetic instability is a distinctive feature of tumorous cells. In fact, genetic instability appears to be associated with cancer from its first stages of development and can be involved both as a cause of cancer (tumorigenesis) and in the generation of genetic variation within a tumour itself (intratumoral heterogeneity).
-end-
Bibliographical reference: A new role for Rrm3 in repair of replication-born DNA breakage by sister chromatid recombination. Muñoz-Galván S, García-Rubio M, Ortega P, Ruiz JF, Jimeno S, Pardo B, Gómez-González B, Aguilera A. PLoS Genet. 2017 May 5;13(5):e1006781. doi: 10.1371/journal.pgen.1006781. [Epub ahead of print] PMID: 28475600

University of Seville

Related Cancer Articles:

Radiotherapy for invasive breast cancer increases the risk of second primary lung cancer
East Asian female breast cancer patients receiving radiotherapy have a higher risk of developing second primary lung cancer.
Cancer genomics continued: Triple negative breast cancer and cancer immunotherapy
Continuing PLOS Medicine's special issue on cancer genomics, Christos Hatzis of Yale University, New Haven, Conn., USA and colleagues describe a new subtype of triple negative breast cancer that may be more amenable to treatment than other cases of this difficult-to-treat disease.
Metabolite that promotes cancer cell transformation and colorectal cancer spread identified
Osaka University researchers revealed that the metabolite D-2-hydroxyglurate (D-2HG) promotes epithelial-mesenchymal transition of colorectal cancer cells, leading them to develop features of lower adherence to neighboring cells, increased invasiveness, and greater likelihood of metastatic spread.
UH Cancer Center researcher finds new driver of an aggressive form of brain cancer
University of Hawai'i Cancer Center researchers have identified an essential driver of tumor cell invasion in glioblastoma, the most aggressive form of brain cancer that can occur at any age.
UH Cancer Center researchers develop algorithm to find precise cancer treatments
University of Hawai'i Cancer Center researchers developed a computational algorithm to analyze 'Big Data' obtained from tumor samples to better understand and treat cancer.
New analytical technology to quantify anti-cancer drugs inside cancer cells
University of Oklahoma researchers will apply a new analytical technology that could ultimately provide a powerful tool for improved treatment of cancer patients in Oklahoma and beyond.
Radiotherapy for lung cancer patients is linked to increased risk of non-cancer deaths
Researchers have found that treating patients who have early stage non-small cell lung cancer with a type of radiotherapy called stereotactic body radiation therapy is associated with a small but increased risk of death from causes other than cancer.
Cancer expert says public health and prevention measures are key to defeating cancer
Is investment in research to develop new treatments the best approach to controlling cancer?
UI Cancer Center, Governors State to address cancer disparities in south suburbs
The University of Illinois Cancer Center and Governors State University have received a joint four-year, $1.5 million grant from the National Cancer Institute to help both institutions conduct community-based research to reduce cancer-related health disparities in Chicago's south suburbs.
Leading cancer research organizations to host international cancer immunotherapy conference
The Cancer Research Institute, the Association for Cancer Immunotherapy, the European Academy of Tumor Immunology, and the American Association for Cancer Research will join forces to sponsor the first International Cancer Immunotherapy Conference at the Sheraton New York Times Square Hotel in New York, Sept.

Related Cancer Reading:

Best Science Podcasts 2019

We have hand picked the best science podcasts for 2019. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Anthropomorphic
Do animals grieve? Do they have language or consciousness? For a long time, scientists resisted the urge to look for human qualities in animals. This hour, TED speakers explore how that is changing. Guests include biological anthropologist Barbara King, dolphin researcher Denise Herzing, primatologist Frans de Waal, and ecologist Carl Safina.
Now Playing: Science for the People

#SB2 2019 Science Birthday Minisode: Mary Golda Ross
Our second annual Science Birthday is here, and this year we celebrate the wonderful Mary Golda Ross, born 9 August 1908. She died in 2008 at age 99, but left a lasting mark on the science of rocketry and space exploration as an early woman in engineering, and one of the first Native Americans in engineering. Join Rachelle and Bethany for this very special birthday minisode celebrating Mary and her achievements. Thanks to our Patreons who make this show possible! Read more about Mary G. Ross: Interview with Mary Ross on Lash Publications International, by Laurel Sheppard Meet Mary Golda...