Navigation Links
Researchers identify a mechanism that stops progression of abnormal cells into cancer
Date:8/14/2014

(Boston)-- Researchers from Boston University School of Medicine (BUSM) report that a tumor suppressor pathway, called the Hippo pathway, is responsible for sensing abnormal chromosome numbers in cells and triggering cell cycle arrest, thus preventing progression into cancer.

Although the link between abnormal cells and tumor suppressor pathwayslike that mediated by the well known p53 genehas been firmly established, the critical steps in between are not well understood. According to the authors, whose work appears in Cell, this work completes at least one of the missing links.

Normal human cells contain 23 pairs of chromosomes, but this number doubles to 46 pairs as a cell prepares to divide. At the end of a normal cell division cycle, these chromosomes evenly divide to produce two identical cells with 23 pairs of chromosomes each. Sometimes, however, errors occur during division and cells fail to divide properly, resulting in giant cells with double the number of chromosomes, known as a tetraploid cells. Normally, p53 dependent pathways stop these tetraploid cells from proliferating. This response is critical because those tetraploid cells that escape detection can facilitate cancer development: Recent studies suggest that as many as 40% of all solid tumors have passed through a tetraploid stage at some point during their development. Thus, there has been great interest in understanding how a cell "knows" it has a tetraploid complement of chromosomes and is in need of tumor suppression.

Using a technique known as genome-wide screening, the scientists systematically depleted every human gene from tetraploid cells in order to discover which ones were important to prevent proliferation. They found that when one specific gene, LATS2, was eliminated, the arrested tetraploid cells resumed proliferation, thus demonstrating that LATS2 was an upstream gene responsible for halting abnormal cell division. The LATS2 gene is known to activate the Hippo tumor suppressor pathway, which is the same pathway our bodies use to ensure our vital organs don't grow out of control. Now, the authors demonstrate that the Hippo pathway also represents the underlying pathway that prevents tetraploid cells from proliferating and causing tumors. "Although more studies are needed to further clarify this critical pathway, this work may help guide the development of new therapies that specifically target tumor cells with abnormal numbers of chromosomes, while sparing the normal healthy cells from which they originated," explained corresponding author Neil J. Ganem, PhD, Assistant Professor of Pharmacology and Medicine in the Shamim and Ashraf Dahod Breast Cancer Research Laboratories at BUSM.


'/>"/>

Contact: Gina DiGravio
gina.digravio@bmc.org
617-638-8480
Boston University Medical Center
Source:Eurekalert

Related medicine news :

1. NIH awards $20 million over 5 years to train next generation of global health researchers
2. Researchers develop a new cell and animal model of inflammatory breast cancer
3. Researchers uncover a viable way for colorectal cancer patients to overcome drug resistance
4. Researchers Find Gene Mutations That May Be a Key to Autism
5. Researchers find evidence of banned antibiotics in poultry products
6. NJ stroke researchers report advances in spatial neglect research at AAN Conference
7. Autism by the numbers: Yale researchers examine impact of new diagnostic criteria
8. Researchers Map Brain Regions Linked to Intelligence
9. Researchers ID Genes That May Determine Mental Illness
10. Researchers Develop Blood Test for Depression
11. University of Cincinnati researchers win $3.7M grant from US Department of Defense
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/25/2017)... (PRWEB) , ... April 25, ... ... based in Newport Beach, California, committed to raising awareness for Duchenne muscular ... results from its randomized CAP-1002 (cardiosphere-derived cells) Phase I/II HOPE clinical trial ...
(Date:4/25/2017)... ... April 25, 2017 , ... As President Trump challenges ... for how his administration could impact the employee benefits industry. James Slotnick, AVP, ... most likely to make it through Congress. His discussion will focus on the ...
(Date:4/25/2017)... ... April 25, 2017 , ... The doctors at Wall Centre Dental ... with dental fear and require sedation to receive dental care. The doctors offer three ... procedures, from hygienic cleanings to oral surgery, at their dental office in Vancouver. Wall ...
(Date:4/25/2017)... ... April 25, 2017 , ... Patients who would like ... in a fraction of the time as traditional braces – Wilckodontics®. Dr. Victoria ... now offers this revolutionary treatment with or without a referral. , Wilckodontics ...
(Date:4/25/2017)... ... April 25, 2017 , ... ... in unveiling cutting-edge birth defects research related to Zika virus during pregnancy, as ... premier society for this important science. , The Teratology Society ...
Breaking Medicine News(10 mins):
(Date:4/19/2017)... 2017 Companion animal ... in pets such as canine, avian and feline. ... types such as Attenuated Live Vaccines, Conjugate Vaccines, ... and Recombinant Vaccines. Attenuated live vaccines are derived ... which have been weakend under laboratory conditions. Conjugate ...
(Date:4/19/2017)... , April 19, 2017  SARES•REGIS Group leased ... is developing at Conejo Spectrum Business Park in ... Atara Biotherapeutics, Inc. , a biopharmaceutical company ... life-threatening diseases that have been underserved by scientific ... therapies for cancer, autoimmune and infectious disease. ...
(Date:4/18/2017)... , April 18, 2017 Viverae ® , ... announce the integration of IBM ® Watson Campaign ... deliver targeted communications for a personalized experience. Through digital ... on their health in real time. The enhanced experience ... most to members, wherever they are in their journey ...
Breaking Medicine Technology: