Navigation Links
Stem cells found to heal damaged artery in lab study
Date:1/10/2013

Scientists at the Texas Biomedical Research Institute have for the first time demonstrated that baboon embryonic stem cells can be programmed to completely restore a severely damaged artery. These early results show promise for eventually developing stem cell therapies to restore human tissues or organs damaged by age or disease.

"We first cultured the stem cells in petri dishes under special conditions to make them differentiate into cells that are the precursors of blood vessels, and we saw that we could get them to form tubular and branching structures, similar to blood vessels," said John L. VandeBerg, Ph.D., Texas Biomed's chief scientific officer.

This finding gave VandeBerg and his team the confidence to do complex experiments to find out if these cells could actually heal a damaged artery. Human embryonic stem cells were first isolated and grown in 1998.

The results are presented in a manuscript, co-authored by Texas Biomed's Qiang Shi, Ph.D., and Gerald Shatten, Ph.D., of the University of Pittsburgh, published in the January 10, 2013 issue of the Journal of Cellular and Molecular Medicine.

The scientists found that cells derived from embryonic stem cells could actually repair experimentally damaged baboon arteries and "are promising therapeutic agents for repairing damaged vasculature of people," according to the authors.

Researchers completely removed the cells that line the inside surface from a segment of artery, and then put cells that had been derived from embryonic stem cells inside the artery. They then connected both ends of the arterial segment to plastic tubing inside a device called a bioreactor which is designed to grow cells and tissues. The scientists then pumped fluid through the artery under pressure as if blood were flowing through it. The outside of the artery was bathed in another fluid to sustain the cells located there.

Three days later, the complex structure of the inner surface was beginning to regenerate, and by 14 days, the inside of the artery had been perfectly restored to its complex natural state. It went from a non-functional tube to a complex fully functional artery.

"Just think of what this kind of treatment would mean to a patient who had just suffered a heart attack as a consequence of a damaged coronary artery. And this is the real potential of stem cell regenerative medicinethat is, a treatment with stem cells that regenerates a damaged or destroyed tissue or organ," VandeBerg said.

To show that the artery couldn't heal itself in the absence of stem cells, the researchers took a control arterial segment that also was stripped of the cells on its interior surface, but did not seed it with stem cells. No healing occurred.

Stains for proteins that indicate functional characteristics showed that the healed artery had completely normal function and could do everything that a normal artery does in a healthy individual.

"This is evidence that we can harness stem cells to treat the gravest of arterial injuries," said VandeBerg.

Eventually, scientists hope to be able to take a skin cell or a white blood cell or a cell from any other tissue in the body, and induce it to become just like an embryonic stem cell in its capacity to differentiate into any tissue or organ.

"The vision of the future is, for example, for a patient with a pancreas damaged because of diabetes, doctors could take skin cells, induce them to become stem cells, and then grow a new pancreas that is just like the one before disease developed," VandeBerg said.


'/>"/>

Contact: Joseph Carey
jcarey@txbiomed.org
210-258-9437
Texas Biomedical Research Institute
Source:Eurekalert

Related medicine news :

1. Study shows that human hearts generate new cells after birth
2. Not all stem cells are equally efficient for use in regenerative medicine
3. Plvap/PV1 critical to formation of the diaphragms in endothelial cells
4. Stem Cell Technology May Help Rejuvenate Immune Cells
5. Revolutionary techniques could help harness patients own immune cells to fight disease
6. Strange behavior: New study exposes living cells to synthetic protein
7. Stemedica and Scripps to Jointly Investigate Therapeutic Effect of Ischemia Tolerant Mesenchymal Stem Cells (itMSC) and Stem Cell Factors in Lung Injury and Sepsis
8. Scripps Florida scientists create new approach to destroy disease-associated RNAs in cells
9. Steering stem cells to become 2 different building blocks for new blood vessels
10. Poison for cancer cells
11. Pair of proteins gets brain cells into shape
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/6/2016)... , ... February 06, 2016 , ... With the ... add warm color grades to their footage. A LUT is a Lookup Table that ... to the corresponding color indicated by the table. By manipulating each pixel, LUT's can ...
(Date:2/5/2016)... ... ... Steven Tonkinson, 36, of Coconut Grove, Florida, ran the Miami Marathon on ... This year, he ran all 26.2 miles with a green 25-pound ShelterBox strapped to ... , This Sunday, while many are watching the Superbowl, Steven Tonkinson will strap on ...
(Date:2/5/2016)... & Salt Lake City, UT (PRWEB) , ... February 05, 2016 ... ... of Activz Whole-Food Nutrition , announced that the much-anticipated feature with author Jahnavi ... New Really Cool Humans Amateur TV Network. , Each week, on his weekly Whole-Food ...
(Date:2/5/2016)... FL (PRWEB) , ... February 05, 2016 , ... ... the largest domestic franchisees of Popeyes Louisiana Kitchen restaurants, launched the 14th annual ... awareness for kids and adults with muscular dystrophy, ALS and related diseases that ...
(Date:2/5/2016)... ... February 05, 2016 , ... Freed-Hardeman University President Joe A. ... a joint enrollment and degree completion agreement. The agreement, which begins with ... at FHU|Dickson. , The agreement allows students to be jointly admitted to ...
Breaking Medicine News(10 mins):
(Date:2/4/2016)... 4, 2016  Edwards Lifesciences Corporation (NYSE: EW ... heart disease and critical care monitoring, announced today that ... agreement with Morgan Stanley & Co. LLC to repurchase ... part of the Company,s previously authorized program to repurchase ... --> --> ...
(Date:2/4/2016)... Bernstein Liebhard LLP today announced that a securities class ... for the District of Arizona on ... or entities who purchased common shares of Insys Therapeutics Inc. ... 3, 2015 through January 25, 2016 (the "Class Period").  The ... of the Securities Exchange Act of 1934.  ...
(Date:2/4/2016)... N.J. , Feb. 4, 2016  Montoya Love ... Professional in the field of Pharmaceuticals. Montoya is the ... Manufacturing ... supplies, Becton Dickinson provides healthcare institutions, clinical ... equipment throughout fifty countries across the globe. ...
Breaking Medicine Technology: