Featured Research

from universities, journals, and other organizations

Human C-reactive Protein Regulates Myeloma Tumor Cell Growth And Survival

Date:
September 15, 2007
Source:
Cell Press
Summary:
Scientists report that a protein best known as a common marker of inflammation plays a key role in the progression of human cancer. The research implicates C-reactive protein (CRP) as a potential target for cancer treatment.

Scientists report that a protein best known as a common marker of inflammation plays a key role in the progression of human cancer. The research, published in the journal Cancer Cell, implicates C-reactive protein (CRP) as a potential target for cancer treatment.

CRP is a protein that is made in the liver and secreted systemically during the process of inflammation in response to the inflammatory cytokine IL-6. The blood level of CRP is elevated in patients with infections, inflammatory diseases, some cardiovascular diseases, and malignancies including multiple myeloma (MM). Dr. Qing Yi and Dr. Jing Yang from the M.D. Anderson Cancer Center and colleagues designed a series of studies to investigate whether human CRP might influence the growth and survival of MM tumor cells.

The researchers found that addition of CRP to cell cultures at levels observed in patients with MM promoted myeloma cell proliferation and protected myeloma cells from chemotherapy-induced apoptosis and apoptosis induced by IL-6 withdrawal. The protective influence of CRP was also validated in a mouse model of myeloma.

The researchers went on to investigate the cell signaling pathways underlying CRP-mediated protection of myeloma cells. They demonstrated that CRP enhanced secretion of IL-6; binds activating Fcg receptors; activates PI3K/Akt, ERK, and NF-kB pathways; and inhibits caspase cascade activation induced by chemotherapy drugs. Further, CRP was shown to synergize with IL-6 in protecting myeloma cells from apoptosis.

These results provide strong evidence that CRP is not just a marker for MM but is a critical regulator of myeloma cell survival. "CRP protects myeloma cells from apoptosis induced by chemotherapy drugs and stimulates myeloma cells to secrets more IL-6, which in turn provides additional protection to myeloma from apoptosis and stimulates liver cells to secrete more CRP. Thus, CRP could be a therapeutic target for breaking the vicious circle of myeloma to improve the therapeutic efficacy of currently available treatments," explains Dr. Yi.

The researchers include Jing Yang, Michele Wezeman, Xiang Zhang, Pei Lin, Michael Wang, and Jianfei Qian of The University of Texas M.D. Anderson Cancer Center in Houston; Bo Wan, of Fudan University in Shanghai; Larry W. Kwak of The University of Texas M.D. Anderson Cancer Center in Houston; Long Yu,3 of Fudan University in Shanghai; and Qing Yi of The University of Texas M.D. Anderson Cancer Center in Houston and Fudan University in Shanghai.

Reference: Yang et al.: "Human C-reactive protein binds activating Fcã receptors and protects myeloma tumor cells from apoptosis." Publishing in Cancer Cell 12, 252--265, September 2007. DOI 10.1016/j.ccr.2007.08.008 


Story Source:

The above story is based on materials provided by Cell Press. Note: Materials may be edited for content and length.


Cite This Page:

Cell Press. "Human C-reactive Protein Regulates Myeloma Tumor Cell Growth And Survival." ScienceDaily. ScienceDaily, 15 September 2007. <www.sciencedaily.com/releases/2007/09/070910132856.htm>.
Cell Press. (2007, September 15). Human C-reactive Protein Regulates Myeloma Tumor Cell Growth And Survival. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2007/09/070910132856.htm
Cell Press. "Human C-reactive Protein Regulates Myeloma Tumor Cell Growth And Survival." ScienceDaily. www.sciencedaily.com/releases/2007/09/070910132856.htm (accessed August 20, 2014).

Share This




More Health & Medicine News

Wednesday, August 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola-Hit Sierra Leone's Freetown a City on Edge

Ebola-Hit Sierra Leone's Freetown a City on Edge

AFP (Aug. 19, 2014) — Residents of Sierra Leone's capital voice their fears as the Ebola virus sweeps through west Africa. Duration: 00:56 Video provided by AFP
Powered by NewsLook.com
101-Year-Old Working Man Has All The Advice You Need

101-Year-Old Working Man Has All The Advice You Need

Newsy (Aug. 19, 2014) — Herman Goldman has worked at the same lighting store for almost 75 years. Find out his secrets to a happy, productive life. Video provided by Newsy
Powered by NewsLook.com
Researcher Testing on-Field Concussion Scanners

Researcher Testing on-Field Concussion Scanners

AP (Aug. 19, 2014) — Four Texas high school football programs are trying out an experimental system designed to diagnose concussions on the field. The technology is in response to growing concern over head trauma in America's most watched sport. (Aug. 19) Video provided by AP
Powered by NewsLook.com
American Ebola Patient Apparently Improving, Outbreak Is Not

American Ebola Patient Apparently Improving, Outbreak Is Not

Newsy (Aug. 19, 2014) — Nancy Writebol, an American missionary who contracted Ebola, is apparently getting better, according to her husband. The outbreak, however, is not. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins