Navigation Links
Cancer-linked FAM190A gene found to regulate cell division
Date:7/3/2013

Johns Hopkins cancer scientists have discovered that a little-described gene known as FAM190A plays a subtle but critical role in regulating the normal cell division process known as mitosis, and the scientists' research suggests that mutations in the gene may contribute to commonly found chromosomal instability in cancer.

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.


'/>"/>

Contact: Vanessa Wasta
wasta@jhmi.edu
410-614-2914
Johns Hopkins Medicine
Source:Eurekalert

Related medicine news :

1. More Fake Avastin Found in U.S., FDA Says
2. Kessler Foundation names Dr. John Whyte recipient of Foundations 2nd Annual DeLisa Award
3. History of abandoned urban sites found stored in soil
4. Wilderness Medicine founder offers health tips for summer season
5. Concerns about MRSA for expectant mothers may be unfounded
6. Kessler Foundation scientist awarded $554,000 for multiple sclerosis employment research
7. Clues to Slacker Behavior Found in Brain, Study Says
8. Kessler Foundation researchers present at first International Congress on Cognition in MS
9. Biomedical researchers receive Hartwell Foundation awards
10. Fewer prostate cancer surgery complications found in teaching hospitals with fellowship programs
11. Breast cancer effectively treated with chemical found in celery, parsley by MU researchers
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/29/2017)... (PRWEB) , ... April 29, 2017 , ... ... Grocery Company to the list of fine retailers selling biodegradable, hanging flushable wipes ... H.E.B., a large supermarket chain headquartered in San Antonio, Texas, operates more than ...
(Date:4/28/2017)... ... April 28, 2017 , ... Accreditation Commission for Health Care ... of America (HCAOA). This agreement allows HCAOA members to receive special pricing on ... on Accreditation University (AU) educational resources that help prepare HCAOA members for ACHC ...
(Date:4/28/2017)... ... April 28, 2017 , ... Getting enough sleep affects much more than energy – ... just 19 hours without sleep can compromise motor reaction time, which can increase the risk ... Insurance is sharing the following tips from the NSF to help you sleep better and ...
(Date:4/28/2017)... ... April 28, 2017 , ... Datta Endoscopic Back ... joined the revolutionary endoscopic practice under Dr. Datta. Patel is a Board Certified ... The patented, revolutionary eDiscSculpt Technique created and used by Datta Endoscopic is unlike ...
(Date:4/28/2017)... MA (PRWEB) , ... April 28, 2017 , ... People ... for older people. “Wearing a hearing aid doesn’t have the stigma it had when ... & Hearing Associates of Greater Boston, in a NALA North American Speaker Series ...
Breaking Medicine News(10 mins):
(Date:4/19/2017)... DIEGO , April 19, 2017  Sorrento ... an antibody-centric, clinical-stage biopharmaceutical company developing new treatments ... announced the closing of its previously announced underwritten ... stock at a public offering price of $2.00 ... and estimated offering expenses payable by Sorrento.  The ...
(Date:4/19/2017)... 19, 2017  Novartis today announced the publication ... Lung, and Blood Institute (NHLBI) of the National ... patients with treatment-naïve severe aplastic anemia (SAA) achieved ... eltrombopag at the initiation of and concurrently with ... three sequential treatment groups, or cohorts. Cohort 3 ...
(Date:4/18/2017)... 18, 2017 Cogentix Medical, Inc. (NASDAQ: CGNT), ... Urology, Uro/Gyn and Gynecology markets with innovative and proprietary ... ended March 31, 2017 after the market close on ... will host a conference call and webcast to discuss ... 2, 2017 at 4:30 p.m. Eastern Time (3:30 p.m. ...
Breaking Medicine Technology: