Featured Research

from universities, journals, and other organizations

Magnetic attraction of stem cells creates more potent treatment for heart attack

Date:
April 10, 2010
Source:
Cedars-Sinai Medical Center
Summary:
Researchers have found in animals that infusing cardiac-derived stem cells with micro-size particles of iron and then using a magnet to guide those stem cells to the area of the heart damaged in a heart attack boosts the heart's retention of those cells and could increase the therapeutic benefit of stem cell therapy for heart disease.

Researchers at the Cedars-Sinai Heart Institute have found in animals that infusing cardiac-derived stem cells with micro-size particles of iron and then using a magnet to guide those stem cells to the area of the heart damaged in a heart attack boosts the heart's retention of those cells and could increase the therapeutic benefit of stem cell therapy for heart disease.

The study is published online by Circulation Research, a scientific journal of the American Heart Association. The study also will appear in the journal's May 28th printed edition.

"Stem cell therapies show great promise as a treatment for heart injuries, but 24 hours after infusion, we found that less than 10 percent of the stem cells remain in the injured area," said Eduardo Marbán, M.D., director of the Cedars-Sinai Heart Institute. "Once injected into a patient's artery, many stem cells are lost due to the combination of tissue blood flow, which can wash out stem cells, and cardiac contraction, which can squeeze out stem cells. We needed to find a way to guide more of the cells directly to the area of the heart that we want to heal."

Marbán's team, including Ke Cheng, Ph.D. and other researchers, then began a new animal investigation, loading cardiac stem cells with micro-size iron particles. The iron-loaded cells were then injected into rats with a heart attack. When a toy magnet was placed externally above the heart and close to the damaged heart muscle, the stem cells clustered at the site of injury, retention of cells in the heart tripled, and the injected cells went on to heal the heart more effectively.

"Tissue viability is enhanced and heart function is greater with magnetic targeting," said Marbán, who holds the Mark Siegel Family Foundation Chair at the Cedars-Sinai Heart Institute and directs Cedars-Sinai's Board of Governors Heart Stem Cell Center. "This remarkably simple method could easily be coupled with current stem cell treatments to enhance their effectiveness."

In the future, this finding in the animal model may build on the ongoing, groundbreaking clinical trial led by Raj Makkar, M.D., director of interventional cardiology for the Cedars-Sinai Heart Institute. In the clinical trial, which is based on Marbán's research, heart attack patients undergo two minimally-invasive procedures in an effort to repair and re-grow healthy muscle in a heart injured by a heart attack. First, a biopsy of each patient's own heart tissue is used to grow specialized heart stem cells. About a month later, the multiplied stem cells are then injected back into the patient's heart via a coronary artery.

The two-step procedure was completed on the first patient in June 2009. Complete results are expected in early-2011.

Recently, Marbán received a $5.5 million grant from the California Institute for Regenerative Medicine to continue developing cardiac stem cell therapies.

The Cedars-Sinai Heart Institute is internationally recognized for outstanding heart care built on decades of innovation and leading-edge research. From cardiac imaging and advanced diagnostics to surgical repair of complex heart problems to the training of the heart specialists of tomorrow and research that is deepening medical knowledge and practice, the Cedars-Sinai Heart Institute is known around the world for excellence and innovations.

Marbán invented the methods used to grow and expand stem cells from heart biopsies. Marbán filed patents regarding those innovations which are licensed by Capricor, Inc. Marbán and his wife, Linda Marban, Ph.D. are both founders of Capricor, Inc. Dr. Eduardo Marban serves on its Board of Directors, and owns equity in the company. Dr. Linda Marban serves as a consultant to Capricor.


Story Source:

The above story is based on materials provided by Cedars-Sinai Medical Center. Note: Materials may be edited for content and length.


Journal Reference:

  1. Ke Cheng, Tao-Sheng Li, Konstantinos Malliaras, Darryl Davis, Yiqiang Zhang, and Eduardo Marbán. Magnetic Targeting Enhances Engraftment and Functional Benefit of Iron-Labeled Cardiosphere-Derived Cells in Myocardial Infarction. Circulation Research, 2010 DOI: 10.1161/CIRCRESAHA.109.212589

Cite This Page:

Cedars-Sinai Medical Center. "Magnetic attraction of stem cells creates more potent treatment for heart attack." ScienceDaily. ScienceDaily, 10 April 2010. <www.sciencedaily.com/releases/2010/04/100408160900.htm>.
Cedars-Sinai Medical Center. (2010, April 10). Magnetic attraction of stem cells creates more potent treatment for heart attack. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2010/04/100408160900.htm
Cedars-Sinai Medical Center. "Magnetic attraction of stem cells creates more potent treatment for heart attack." ScienceDaily. www.sciencedaily.com/releases/2010/04/100408160900.htm (accessed July 28, 2014).

Share This




More Health & Medicine News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

$15B Deal on Vets' Health Care Reached

$15B Deal on Vets' Health Care Reached

AP (July 28, 2014) — A bipartisan deal to improve veterans health care would authorize at least $15 billion in emergency spending to fix a veterans program scandalized by long patient wait times and falsified records. (July 28) Video provided by AP
Powered by NewsLook.com
Traditional African Dishes Teach Healthy Eating

Traditional African Dishes Teach Healthy Eating

AP (July 28, 2014) — Classes are being offered nationwide to encourage African Americans to learn about cooking fresh foods based on traditional African cuisine. The program is trying to combat obesity, heart disease and other ailments often linked to diet. (July 28) Video provided by AP
Powered by NewsLook.com
West Africa Gripped by Deadly Ebola Outbreak

West Africa Gripped by Deadly Ebola Outbreak

AFP (July 28, 2014) — The worst-ever outbreak of the deadly Ebola epidemic grips west Africa, killing hundreds. Duration: 00:48 Video provided by AFP
Powered by NewsLook.com
Trees Could Save More Than 850 Lives Each Year

Trees Could Save More Than 850 Lives Each Year

Newsy (July 27, 2014) — A national study conducted by the USDA Forest Service found that trees collectively save more than 850 lives on an annual basis. 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