Navigation Links
UT Southwestern research uncovers genetic link between emphysema, lung cancer
Date:6/8/2011

DALLAS June 9, 2011 A gene linked to emphysema also can be a factor for developing lung cancer unrelated to cigarette smoking, UT Southwestern Medical Center research indicates. Smoking was the only known risk factor previously associated with both diseases.

In the study, mice bred to have the human gene pleiomorphic adenoma gene-like 2 (PLAGL2) all developed emphysema, and by gender also developed lung cancer at rates as high as one in every six rodents. Although the new study showed PLAGL2 as a contributing factor in emphysema and lung cancer development, the diseases form in opposite ways. Emphysema arises from cell death or injury, while lung cancer involves uncontrolled cell growth.

"We think this gene induces emphysema by causing stem cells in the lung to die," said Dr. Jonathan Weissler, vice chairman of the department of medicine and chief of medicine at UT Southwestern University Hospital and senior author of the study, available online and due to be published in the journal Lung Cancer in October. "The cells that don't die through apoptosis would be more likely to have uncontrolled growth" and become cancerous, suggesting a genetic link between the diseases.

The gene is a known driver of several types of cancer. The degree to which PLAGL2 turns on, or is expressed, plays a role in cancer development. Previous research has demonstrated that female lung cancer patients with higher levels of gene expression had much poorer survival rates.

Increased PLAGL2 expression also aggravates emphysema. In 2009, Dr. Weissler and UT Southwestern colleagues found that high expression of this gene led to enlarged airways (alveoli) in mice. Female mice in particular were more prone to develop emphysema.

"The mice in that study developed the same type of emphysema seen in smokers despite the fact they were not exposed to cigarette smoke," said Dr. Weissler, director of the James M. Collins Center for Biomedical Research.

The new study revealed higher incidence of lung cancer in male mice. Of two PLAGL2 mice groups tested, lung cancer developed in 12.5 percent and 18.5 percent of male mice. The rate for female mice was zero and 3.7 percent.

In human cases, the association between these two diseases also is stronger in men. One study showed that about 10 percent of patients with severe emphysema all men also had lung cancer. The reasons for these gender differences are as yet unknown, although this information eventually could be used to help identify patients at risk for cancer.

"PLAGL2 expression could be used as a marker for cells that are at risk of undergoing malignant transformation," Dr. Weissler said.

Other researchers involved in the study were lead authors Dr. Yih-Sheng Yang and Dr. Meng-Chun Yang, both former assistant professors of internal medicine at UT Southwestern.


'/>"/>

Contact: Debbie Bolles
debbie.bolles@utsouthwestern.edu
214-648-3404
UT Southwestern Medical Center
Source:Eurekalert

Related medicine news :

1. UT Southwestern research teams anti-malarial work wins international Project of the Year award
2. Drug can reverse overgrown hearts to help prevent heart failure, UT Southwestern researchers find
3. UT Southwesterns Luis Parada elected to National Academy of Sciences
4. Antidepressants may not improve all symptoms of depression, UT Southwestern researchers find
5. Limiting carbs, not calories, reduces liver fat faster, UT Southwestern researchers find
6. Pelvic-repair device developed by UT Southwestern surgeons enables minimally invasive trauma surgery
7. UT Southwestern pediatricians launch landmark childrens health study
8. Grant helps UT Southwestern researcher study causes of preterm birth
9. Dangerous blood pressure increases during exercise can be blocked, UT Southwestern researchers find
10. UT Southwestern research advances fight against kidney cancer
11. Annual sonograms are needed to verify correct IUD position, UT Southwestern obstetricians say
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/26/2016)... ... June 26, 2016 , ... Pixel Film Studios Released ProSlice ... "Film editors can give their videos a whole new perspective by using the ... of Pixel Film Studios. , ProSlice Levels contains over 30 Different presets to ...
(Date:6/25/2016)... ... ... Austin residents seeking Mohs surgery services, can now turn to Dr. Jessica Scruggs ... for medical and surgical dermatology. , Dr. Dorsey brings specialization to include Mohs surgery, ... Micrographic Surgery completed by Dr. Dorsey was under the direction of Glenn Goldstein, MD, ...
(Date:6/25/2016)... ... 25, 2016 , ... Dr. Calvin Johnson has dedicated his ... implemented orthobiologic procedures as a method for treating his patients. The procedure is ... to perform the treatment. Orthobiologics are substances that orthopaedic surgeons use to help ...
(Date:6/24/2016)... ... June 24, 2016 , ... June 19, 2016 is World Sickle ... chronic pain and the benefits of holistic treatments, Serenity Recovery Center of ... Sickle Cell Disease. , Sickle Cell Disease (SCD) is a disorder of the red ...
(Date:6/24/2016)... ... June 24, 2016 , ... Comfort Keepers® of San Diego, CA is excited ... To Recovery® program to drive cancer patients to and from their cancer treatments. ... highest quality of life and ongoing independence. Getting to and from medical treatments ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... -- The vast majority of dialysis patients currently receive ... usually 3 times a week, with treatment times averaging ... equipment preparation and wait time.  This regimen can be ... who are elderly and frail.  Many elderly dialysis patients ... for some duration of time. Residents in ...
(Date:6/23/2016)... 23, 2016  Experian Health, the healthcare ... the patient payment and care experience, today ... products and services that will enhance the ... offerings. These award-winning solutions will enable healthcare ... compliant in an ever-changing environment and redefine ...
(Date:6/23/2016)...  The National Pharmaceutical Council (NPC) today announced ... research organization as its newest member.  ... president and chief scientific officer, Mallinckrodt Pharmaceuticals, will ... Board of Directors. ... us in support of our efforts to conduct ...
Breaking Medicine Technology: