Corporate Banner
Satellite Banner
Genotyping & Gene Expression
Scientific Community
Become a Member | Sign in
Home>News>This Article

Cancer-Linked Fam190a Gene Found to Regulate Cell Division

Published: Monday, July 08, 2013
Last Updated: Monday, July 08, 2013
Bookmark and Share
A little-described gene known as FAM190A plays a subtle but critical role in regulating the normal cell division process known as mitosis.

In laboratory studies of cells, investigators found that knocking down expression of FAM190A disrupts mitosis. In three pancreatic cancer-cell lines and a standard human-cell line engineered to be deficient in FAM190A, researchers observed that cells often had difficulty separating at the end of mitosis, creating cells with two or more nuclei. The American Journal of Pathology published a description of the work online May 17, which comes nearly a century after German scientist Theodor Boveri linked abnormal mitosis to cancer. Until now, there had been no common gene alteration identified as the culprit for cancer-linked mitosis.

“These cells try to divide, and it looks like they succeed, except they wind up with a strand that connects them,” explains Scott Kern, M.D., professor of oncology and pathology at Johns Hopkins University School of Medicine and its Kimmel Cancer Center. “The next time they try to divide, all the nuclei come together, and they try to make four cells instead of two. Subsequently, they try to make eight cells, and so on.” Movies of the process taken by Kern’s laboratory are available on the journal Web site.

Kern’s group previously reported that deletions in the FAM190A gene could be found in nearly 40 percent of human cancers. That report, published in 2011 in the journal Oncotarget, and the current one are believed to be the only published papers focused solely on FAM190A, which is frequently altered in human cancers but whose function has been unknown. Alterations in FAM190A messages may be the third most common in human cancers after those for the more well-known genes p53 and p16, Kern says.

“We don’t think that a species can exist without FAM190, but we don’t think severe defects in FAM190A readily survive among cancers,” Kern says. “The mutations seen here are very special – they don’t take out the whole gene but instead remove an internal portion and leave what we call the reading frame. We think we’re finding a more subtle defect in human cancers, in which mitosis defects can occur episodically, and we propose it may happen in about 40 percent of human cancers.”

Abnormalities in FAM190A may cause chromosomal imbalances seen so commonly in cancers, Kern says. Multipolar mitosis is one of the most common functional defects reported in human cancers, and more than 90 percent of human cancers have abnormal numbers of chromosomes.

Kern says he plans to study FAM190A further by creating lab models of the subtle defects akin to what actually is tolerated by human cancer cells.

Further Information
Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 2,600+ scientific posters on ePosters
  • More than 3,800+ scientific videos on LabTube
  • 35 community eNewsletters

Sign In

Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.

Related Content

New Autism-Causing Genetic Variant Identified
Novel approach expected to be useful for other diseases too.
Saturday, March 28, 2015
A Simple Blood Test May Catch Early Pancreatic Cancer
Currently, disease usually found too late to save lives.
Wednesday, October 30, 2013
Molecular Marker Predicts Patients Most Likely to Benefit Longest From Two Popular Cancer Drugs
Preliminary study needs further confirmation.
Wednesday, September 11, 2013
Enzyme-Activating Antibodies Revealed As Marker for Severe Rheumatoid Arthritis
Finding could lead to earlier diagnosis and new, more aggressive treatment for worst cases.
Thursday, May 30, 2013
Scientific News
Genes That Protect African Children From Developing Malaria Identified
Variations in DNA at a specific location on the genome that protect African children from developing severe malaria, in some cases nearly halving a child’s chance of developing the life-threatening disease, have been identified in the largest genetic association study of malaria to date.
Sniffing Out Cancer
Scientists have been exploring new ways to “smell” signs of cancer by analyzing what’s in patients’ breath.
New Test Detects All Viruses
A new test detects virtually any virus that infects people and animals, according to research at Washington University School of Medicine in St. Louis, where the technology was developed.
Scientists Create World’s Largest Catalog of Human Genomic Variation
An international team of scientists from the 1000 Genomes Project Consortium has created the world’s largest catalog of genomic differences among humans, providing researchers with powerful clues to help them establish why some people are susceptible to various diseases.
Five Genetic Regions Implicated In Cystic Fibrosis Severity
An international consortium of researchers conducted the largest-ever CF genome-wide analysis to find new therapeutic targets.
Bone Risks Linked to Genetic Variants
A large-scale genomic study uncovered novel genetic variants and led researchers to an unexpected gene that affects bone density and fracture risk.
Genetic Adaptations to Diet and Climate
Researchers found genetic variations in the Inuit of Greenland that reflect adaptations to their specific diet and climate.
Multi-Gene Test Enables Some Breast Cancer Patients to Safely Avoid Chemotherapy
A major study is providing the best evidence to date that a 21-gene test done on the tumor can identify breast cancer patients who can safely avoid chemotherapy.
Maintaining Healthy DNA Delays Menopause
An international study of nearly 70,000 women has identified more than forty regions of the human genome that are involved in governing at what age a woman goes through menopause.
Stem Cell Research Hints at Evolution of Human Brain
Researchers at UC San Francisco have succeeded in mapping the genetic signature of a unique group of stem cells in the human brain that seem to generate most of the neurons in our massive cerebral cortex.
Skyscraper Banner

Skyscraper Banner
Go to LabTube
Go to eposters
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
2,600+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
3,800+ scientific videos