Experimental drug shows promise against brain, prostate cancers

An experimental drug currently being tested against breast and lung cancer shows promise in fighting the brain cancer glioblastoma and prostate cancer, researchers at UT Southwestern Medical Center have found in two preclinical studies.

The drug’s actions, observed in isolated human cells in one trial and in rodents in the other, are especially encouraging because they attacked not only the bulk of the tumor cells but also the rare cancer stem cells that are believed to be responsible for most of a cancer’s growth, said Dr. Jerry Shay, professor of cell biology and a senior co-author of both papers. The glioblastoma study appears in the January issue of Clinical Cancer Research. The prostate cancer study is available online in the International Journal of Cancer.

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Adult Stem Cells May Target and Repair Heart Attack Damage

A 41-site clinical trial, testing the restorative effect that adult bone marrow stem cells have on damaged or injured myocardium in heart attack patients, is being led at Wake Forest Baptist by Sanjay Gandhi, MD.

Phase I of the research study found that stem cells derived from bone marrow (mesenchymal stem cells) were safe for patients and may have the ability to limit scar formation, improve heart function and preserve tissue following a first heart attack.

Phase I was a multicenter study of 53 patients which demonstrated that the treatment was safe in adults, and those patients given this stem cell therapy actually experienced improvement in their overall ejection fraction. The earlier phase of the study showed that these mesenchymal stem cells could target the damaged myocardial tissue and initiate a process for recovery of heart muscle that could hopefully result in improvement of the overall heart.

Wake Forest is currently participating in a Phase II multicenter study investigating the efficacy of a one-time infusion of adult bone marrow stem cells in heart attack patients. Patients who experience a first time heart attack and undergo coronary angioplasty and stenting are eligible. Investigators are studying whether treatment with stem cells results in less heart muscle damage and improved heart function following a heart attack.

Wake Forest Baptist is the only trial site in North Carolina, South Carolina, Virginia and West Virginia.

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First U.S. stem cells transplanted into spinal cord

For the first time in the United States, stem cells have been directly injected into the spinal cord of a patient, researchers announced Thursday.

Doctors injected stem cells from 8-week-old fetal tissue into the spine of a man in his early 60s who has advanced ALS, or amyotrophic lateral sclerosis. It was part of a clinical trial designed to determine whether it is safe to inject stem cells into the spinal cord and whether the cells themselves are safe (…)

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Synthetic artery developed using stem cells

A team of researchers from UCL has won a £500,000 grant to develop a synthetic artery that mimics a natural artery – and could revolutionise the treatment of coronary heart disease.

Professor Alexander Seifalian (UCL Surgery and Interventional Science) and Professor George Hamilton (UCL Surgery and Interventional Science & Royal Free Hospital) and their team will use the Wellcome Trust grant to take their work from the laboratory to a pre-clinical trial.

The team has been developing a new nanomaterial with mechanical properties similar to that of human arteries.

The nanomaterial’s inner surface has been modified to attract stem cells from blood circulating inside the body.

It converts these primary cells to endothelial cells, a type of cell that covers the interior of the natural blood vessel and protects it from blockage.

The breakthrough offers hope for sufferers of heart disease who are unable to donate suitable substitute blood vessels for bypass surgery.

Professors Seifalian and Hamilton, experts in nanotechnology, regenerative medicine and vascular surgery, explained: “Coronary heart disease is a condition where one or more blood vessels of the heart become narrowed or blocked. This causes the heart muscle to be starved of oxygen causing damage often leading to a heart attack and muscle death. This interferes with the heart’s ability to pump blood around the body, leading to infirmity and possibly death.

“The current treatment of the disease is to create a new route for blood to circulate, most often by balloon dilatation and stent (stent angioplasty). In many patients however this intervention cannot be performed and in this situation an operation called bypass surgery is needed which can either use substitute blood vessels from another part of the patient or made from a plastic material.

read more: http://www.ucl.ac.uk/news/news-articles/0908/09081101

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SPAIN – Embryonic stem cells. Health minister: conditions exist to perform clinical experiments

Bernat Soria en Atapuerca
Image by dalequetepego via Flickr

In Spain the “conditions exist to perform experiments with this technique”. Health Minister Bernat Soria experienced a personal triumph with the approval of the first human testing with embryonic stem cells, even if it did occur in the US. He added that he is working on regulations “so that all of this, which is already legal, is effective in practical terms: both to provide guarantees for the researchers and volunteers and to facilitate procedures.

He also announced that his intentions have materialized in an agreement with the Governor of California, who, although a Republican, has made big investments into this field.

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