Category Archives: Stem Cell Therapy

A stem cell breakthrough at UCLA could mark a big step for a biopharmaceutical company to use its proprietary technology to forge partnerships with pharmaceutical companies and other research institutions.

Fibrocell Sciences technology isolates, purifies and multiplies a patients fibroblast cells, connective skin cells that make collagen. In a research collaboration with the company, UCLA used the technology to isolate, identify and increase the number of different skin cell types, which lead to two rare adult stem cell-like subpopulations being identified in adult human skin SSEA3-expressing regeneration-associated cells associated with skin regeneration after injuries and mesenchymal adult stem cells.

The findings could have broad applications for personalized medicine. Currently, adult stem cells are derived from adipose tissue and bone marrow. Using mesenchymal stem cells would be less invasive and could be more efficient. Mesenchymal stem cells are being used in research to develop osteoblasts, or bone cells; chondrocytes, or cartilage cells; and adipocytes, or fat cells.

David Pernock, the chairman and CEO of Fibrocell, said the move could mark a significant step in the companys growth.

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Pernock added: Once we have shown we can produce these stem cells in meaningful quantities safely and efficiently, I think well be in a position where companies would want to partner with us to develop them for a variety of indications.

In addition to collaborations, the company has been developing its own therapeutics.

The company is poised to launch its first U.S. Food and Drug Administration-approved therapy Laviv. The therapy uses individuals fibroblast cells to reduce nasolabial fold wrinkles, folds on both sides of the face that start from the outer corners of the nose down to the corners of the mouth. It is also advancing its acne therapy through phase 3 clinical trials and its burn scar therapy through phase 2 trials.

Pernock joined the company two years ago from GlaxoSmithKline. He said the developments under way at the company indicate it is growing and expects to add engineering staff to its Exton, Pennsylvania office later this year.

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Stem cell collaboration could set stage for company’s growth

Wed May 9, 2012 3:35pm BST

(Reuters) - Pluristem Therapeutics Inc said a 7-year old girl suffering from a bone marrow disease experienced a reversal of her condition after receiving its experimental stem cell therapy, sending the Israeli company's shares up 32 percent.

The girl, suffering from aplastic bone marrow in which the patient has no blood-forming stem cells, had a significant rise in her red cells, white cells and platelets following an injection of Pluristem's therapy -- PLacental eXpanded cells.

"The results of this unique case indicate that PLX cells may be effective in treating other diseases that affect the bone marrow," Reuven Or, the child's physician at Hadassah Medical Center, was quoted in a statement by Pluristem.

Last September, the company said animal studies showed that the therapy had the potential to treat blood tissue complications related with acute radiation syndrome, commonly called radiation sickness.

Last month, the U.S. health regulators gave a go ahead to the company to start a mid-stage trial of the therapy for treating Intermittent Claudication -- a subset of peripheral artery disease.

Pluristem shares, which have gained 5 percent since receiving the FDA nod for the mid-stage trial, were up 15 percent at $2.70 in morning trade on the Nasdaq. They touched a high of $3.10 earlier.

(Reporting by Esha Dey in Bangalore; Editing by Gopakumar Warrier)

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Pluristem stem cell therapy saves a patient, shares jump

(SACRAMENTO, Calif.) -- UC Davis Health System researchers are a step closer to launching human clinical trials involving the use of an innovative stem cell therapy to fight the virus that causes AIDS.

In a paper published in the May issue of the Journal of Virology, the UC Davis HIV team demonstrated both the safety and efficacy of transplanting anti-HIV stem cells into mice that represent models of infected patients. The technique, which involves replacing the immune system with stem cells engineered with a triple combination of HIV-resistant genes, proved capable of replicating a normally functioning human immune system by protecting and expanding HIV-resistant immune cells. The cells thrived and self-renewed even when challenged with an HIV viral load.

"We envision this as a potential functional cure for patients infected with HIV, giving them the ability to maintain a normal immune system through genetic resistance," said lead author Joseph Anderson, an assistant adjunct professor of internal medicine and a stem cell researcher at the UC Davis Institute for Regenerative Cures. "Ideally, it would be a one-time treatment through which stem cells express HIV-resistant genes, which in turn generate an entire HIV-resistant immune system."

To establish immunity in mice whose immune systems paralleled those of patients with HIV, Anderson and his team genetically modified human blood stem cells, which are responsible for producing the various types of immune cells in the body.

Building on work that members of the team have pursued over the last decade, they developed several anti-HIV genes that were inserted into blood stem cells using standard gene-therapy techniques and viral vectors (viruses that efficiently insert the genes they carry into host cells). The resulting combination vector contained:

These engineered blood stem cells, which could be differentiated into normal and functional human immune cells, were introduced into the mice. The goal was to validate whether this experimental treatment would result in an immune system that remained functional, even in the face of an HIV infection, and would halt or slow the progression toward AIDS.

The results were successful on all counts.

"After we challenged transplanted mice with live HIV, we demonstrated that the cells with HIV-resistant genes were protected from infection and survived in the face of a viral challenge, maintaining normal human CD4 levels," said Anderson. CD4+ T-cells are a type of specialized immune cell that HIV attacks and uses to make more copies of HIV.

"We actually saw an expansion of resistant cells after the viral challenge, because other cells which were not resistant were being killed off, and only the resistant cells remained, which took over the immune system and maintained normal CD4 levels," added Anderson.

The data provided from the study confirm the safety and efficacy of this combination anti-HIV lentiviral vector in a hematopoietic stem cell gene therapy setting for HIV and validated its potential application in future human clinical trials. The team has submitted a grant application for human clinical trials and is currently seeking regulatory approval, which is necessary to move on to clinical trials.

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Stem cell therapy to battle HIV?