Navigation Links
Combined stem cell-gene therapy approach cures human genetic disease in vitro
Date:5/31/2009

LA JOLLA, CAA study led by researchers at the Salk Institute for Biological Studies, has catapulted the field of regenerative medicine significantly forward, proving in principle that a human genetic disease can be cured using a combination of gene therapy and induced pluripotent stem (iPS) cell technology. The study, published in the May 31, 2009 early online edition of Nature, is a major milestone on the path from the laboratory to the clinic.

"It's been ten years since human stem cells were first cultured in a Petri dish," says the study's leader Juan-Carlos Izpisa Belmonte, Ph.D., a professor in the Gene Expression Laboratory and director of the Center of Regenerative Medicine in Barcelona (CMRB), Spain. "The hope in the field has always been that we'll be able to correct a disease genetically and then make iPS cells that differentiate into the type of tissue where the disease is manifested and bring it to clinic."

Although several studies have demonstrated the efficacy of the approach in mice, its feasibility in humans had not been established. The Salk study offers the first proof that this technology can work in human cells.

Belmonte's team, working with Salk colleague Inder Verma, Ph.D., a professor in the Laboratory of Genetics, and colleagues at the CMRB, and the CIEMAT in Madrid, Spain, decided to focus on Fanconi anemia (FA), a genetic disorder responsible for a series of hematological abnormalities that impair the body's ability to fight infection, deliver oxygen, and clot blood. Caused by mutations in one of 13 Fanconi anemia (FA) genes, the disease often leads to bone marrow failure, leukemia, and other cancers. Even after receiving bone marrow transplants to correct the hematological problems, patients remain at high risk of developing cancer and other serious health conditions.

After taking hair or skin cells from patients with Fanconi anemia, the investigators corrected the defective gene in the patients' cells using gene therapy techniques pioneered in Verma's laboratory. They then successfully reprogrammed the repaired cells into induced pluripotent stem (iPS) cells using a combination of transcription factors, OCT4, SOX2, KLF4 and cMYC. The resulting FA-iPS cells were indistinguishable from human embryonic stem cells and iPS cells generated from healthy donors.

Since bone marrow failure as a result of the progressive decline in the numbers of functional hematopoietic stem cells is the most prominent feature of Fanconi anemia, the researchers then tested whether patient-specific iPS cells could be used as a source for transplantable hematopoietic stem cells. They found that FA-iPS cells readily differentiated into hematopoietic progenitor cells primed to differentiate into healthy blood cells.

"We haven't cured a human being, but we have cured a cell," Belmonte explains. "In theory we could transplant it into a human and cure the disease."

Although hurdles still loom before that theory can become practicein particular, preventing the reprogrammed cells from inducing tumorsin coming months Belmonte and Verma will be exploring ways to overcome that and other obstacles. In April 2009, they received a $6.6 million from the California Institute Regenerative Medicine (CIRM) to pursue research aimed at translating basic science into clinical cures.

"If we can demonstrate that a combined iPSgene therapy approach works in humans, then there is no limit to what we can do," says Verma.


'/>"/>

Contact: Gina Kirchweger
Kirchweger@salk.edu
858-453-410-01340
Salk Institute
Source:Eurekalert  

Related biology news :

1. Extended wakefulness, combined with alcohol, severely impairs driving performance
2. Measurement Specialties, Inc. Announces Impact of German Business Tax Reform 2008 Resulting in Lower Combined German Tax Rate - Impacts 2Q08 Reported Financial Results
3. Bee species outnumber mammals and birds combined
4. Sociological research shows combined impact of genetics, social factors on delinquency
5. A combined tooth-venom arsenal revealed as key to Komodo dragons hunting strategy
6. A new radiation therapy treatment developed for head and neck cancer patients
7. St. Jude finds factors that accelerate resistance to targeted therapy in lymphoblastic leukemia
8. UC health news: molecular pathway may predict chemotherapy effectiveness
9. MIT works toward safer gene therapy
10. Intravenous gene therapy protects normal tissue of mice during whole-body radiation
11. Gene, stem cell therapy only needs to be 50 percent effective to create a healthy heart
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Combined stem cell-gene therapy approach cures human genetic disease in vitro
(Date:2/8/2017)... NEW YORK , Feb. 8, 2017 /PRNewswire/ ... an individual,s voice to match it against a ... voice such as pitch, cadence, and tone are ... systems require minimal hardware installation, as most PCs ... remotely for different transactions. Voice recognition biometrics are ...
(Date:2/8/2017)... Feb. 7, 2017 Report Highlights ... 2021 from $8.3 billion in 2016 at a compound ... 2021. Report Includes - An overview of the ... trends, with data from 2015 and 2016, and projections ... Segmentation of the market on the basis of product ...
(Date:2/6/2017)... -- According to Acuity Market Intelligence, ongoing concerns ... continue to embrace biometric and digital identification based ... Control (ABC) eGates and 1436 Automated Passport Control ... ports of entry across the globe. Deployments increased ... CAGR of 37%. APC Kiosks reached 75% growth ...
Breaking Biology News(10 mins):
(Date:2/23/2017)... TX (PRWEB) , ... February 23, 2017 , ... ... Administration (FDA) de novo clearance to begin marketing the SPEAC® System, the Brain ... for adults at home or in healthcare facilities during periods of rest. A ...
(Date:2/23/2017)... ... February 23, 2017 , ... Today, researchers can fast-track ... uric acid, and/or other biomarkers or SNPs of interest) using one, easy-to-collect saliva ... , the relationship between insulin and other relevant biomarkers can be extensively studied ...
(Date:2/23/2017)... , Feb. 23, 2017 Aviva Systems ... announced the acquisition of GenWay Biotech Incorporated, a ... service and product offering for both the research ... facilitate growth and enhance capabilities for both entities. GenWay,s ... ELISA assays will nicely complement ASB,s objective to ...
(Date:2/22/2017)... 2017  Aratana Therapeutics, Inc. (NASDAQ: PETX), a pet therapeutics ... biopharmaceutical products for companion animals, will host a live conference ... to discuss financial results from the fourth quarter and full ... and investors may access the audio webcast or ... ...
Breaking Biology Technology: