Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Human Embryonic Stem Cell Derived Cardiomyocytes: A Novel Source for Cell Therapy

02.09.2003


ESC Congress 2003



Adult heart cells have limited regenerative capacity and therefore any significant cell loss, such as occurs during a heart attack, is mostly irreversible and may lead to the development of progressive heart failure. Congestive heart failure is one of the leading causes of morbidity and mortality in the western world, placing a significant economic burden on the health care systems. Despite advances in the medical, interventional, and surgical therapeutic measures, the prognosis for these patients remains unacceptably poor. With a chronic lack of donors limiting the number of patients who can benefit from heart transplantations, development of new therapeutic paradigms for heart failure has become imperative

A potential novel therapeutic approach for this situation may be to replace the dysfunctional or scarred tissue with new myogenic cells. However, this cell replacement strategy has been hampered by the lack of cell sources for human heart cells and by the lack of direct evidence for functional integration of donor and host tissues. We describe the establishment of a novel source of cardiomyocytes for cell therapy, the human embryonic stem cell differentiating system. Our results demonstrate that these unique cells can differentiate in the dish to generate spontaneously contracting tissue with the structural and functional properties of cardiac cells. We also demonstrate that the generated cardiac tissue can integrate in vitro with preexisting cardiac cultures as to form a single functional unit.


Human embryonic stem cells are unique cell lines that can be propagated in culture in the undifferentiated state for prolong periods while retaining the capability to differentiate into a variety of tissue types. We have previously established a cardiomyocyte differentiating system from these unique cells in which spontaneously beating areas could be observed within three-dimensional differentiating clusters of cells. Detailed structural, molecular, and functional studies established that these contracting cells are indeed human heart cells. Recently, we have expanded these observations and demonstrated that these cells have electrical properties typical of cardiomyocytes with the appropriate proteins and currents. We have further demonstrated that this system is not limited to the development of isolated heart cells but rather a small-scale functional cardiac tissue is generated with all cells beating in concert. In further studies, contracting human ES cell-derived cardiomyocytes were grafted to primary rat cardiac cultures in the culture dish. Within 24 hours clearly identified synchronous contractions were observed in all co-cultures. Long term analysis revealed that the grafted cells integrated structurally and functionally with host tissue.

Our results provide a possible new source for human cardiac tissue for future cell therapy and tissue engineering strategies attempting to regenerate functional myocardium. We also demonstrated that this tissue has the typical structural and electrophysiological properties of human heart cells and that these cells can integrate and function synchronously with preexisting cardiac cultures. Nevertheless, several obstacles must be overcome before any clinical applications from these cells can be expected. These include the need to increase the yield of heart cells during the differentiation process, the need to generate pure populations of cardiac cells, the need upscale the entire procedure in order to generate the hundred millions of cells required to replace the lost cells, the need to combat immune rejection, and the need to develop in vivo transplantation strategies.

Lior Gepstein, MD, PhD
Bruce Rappaport Faculty of Medicine, Cardiovascular Research Laboratory, Technion-Israel Institute of Technology, Haifa
Israel

Important: This press release accompanies both a presentation and an ESC press conference given at the ESC Congress 2003. Written by the investigator himself/herself, this press release does not necessarily reflect the opinion of the European Society of Cardiology

Camilla Dormer | alfa
Further information:
http://www.escardio.org

More articles from Health and Medicine:

nachricht Study suggests possible new target for treating and preventing Alzheimer's
02.12.2016 | Oregon Health & Science University

nachricht The first analysis of Ewing's sarcoma methyloma opens doors to new treatments
01.12.2016 | IDIBELL-Bellvitge Biomedical Research Institute

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Novel silicon etching technique crafts 3-D gradient refractive index micro-optics

A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.

Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...

Im Focus: Quantum Particles Form Droplets

In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.

“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...

Im Focus: MADMAX: Max Planck Institute for Physics takes up axion research

The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.

The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...

Im Focus: Molecules change shape when wet

Broadband rotational spectroscopy unravels structural reshaping of isolated molecules in the gas phase to accommodate water

In two recent publications in the Journal of Chemical Physics and in the Journal of Physical Chemistry Letters, researchers around Melanie Schnell from the Max...

Im Focus: Fraunhofer ISE Develops Highly Compact, High Frequency DC/DC Converter for Aviation

The efficiency of power electronic systems is not solely dependent on electrical efficiency but also on weight, for example, in mobile systems. When the weight of relevant components and devices in airplanes, for instance, is reduced, fuel savings can be achieved and correspondingly greenhouse gas emissions decreased. New materials and components based on gallium nitride (GaN) can help to reduce weight and increase the efficiency. With these new materials, power electronic switches can be operated at higher switching frequency, resulting in higher power density and lower material costs.

Researchers at the Fraunhofer Institute for Solar Energy Systems ISE together with partners have investigated how these materials can be used to make power...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

ICTM Conference 2017: Production technology for turbomachine manufacturing of the future

16.11.2016 | Event News

Innovation Day Laser Technology – Laser Additive Manufacturing

01.11.2016 | Event News

#IC2S2: When Social Science meets Computer Science - GESIS will host the IC2S2 conference 2017

14.10.2016 | Event News

 
Latest News

UTSA study describes new minimally invasive device to treat cancer and other illnesses

02.12.2016 | Medical Engineering

Plasma-zapping process could yield trans fat-free soybean oil product

02.12.2016 | Agricultural and Forestry Science

What do Netflix, Google and planetary systems have in common?

02.12.2016 | Physics and Astronomy

VideoLinks
B2B-VideoLinks
More VideoLinks >>>