Stem Cell Clinic

Leading stem cell scientists to focus on diabetes, eye diseases at Cedars-Sinai symposium

Public release date: 17-Sep-2012 [ | E-mail | Share ]

Contact: Nicole White nicole.white@cshs.org 310-423-5215 Cedars-Sinai Medical Center

LOS ANGELES Sept. 17, 2012 Leading scientists and clinicians from across the nation will discuss the latest findings on potential stem cell treatments for diabetes and eye diseases at the second Cedars-Sinai Regenerative Medicine Scientific Symposium.

WHO: Stem cell scientists, clinicians and industry leaders.

The symposium is being hosted by the Cedars-Sinai Regenerative Medicine Institute, led by Clive Svendsen, PhD. The institute brings together basic scientists with specialist clinicians, physician scientists and translational scientists across multiple medical specialties to convert fundamental stem cell studies to therapeutic regenerative medicine.

FEATURED RESEARCH: The symposium's morning session will feature an overview of the current state of stem cells and diabetes, including efforts to start the first clinical trials with stem cells for the treatment of diabetes. Other research to be presented includes an update on regenerative medicine approaches to treating macular degeneration, a progressive deterioration of the eye that causes gradual loss of vision. This will include an update from Gad Heilweil , MD, on a key, stem-cell clinical trial on macular degeneration at the University of California Los Angeles.

WHEN: Sept. 21, 2012 8:30 a.m. to 6 p.m. Thomson's lecture begins at 8:40 a.m.

WHERE: Harvey Morse Auditorium Cedars-Sinai Medical Center 8700 Beverly Boulevard Los Angeles, CA 90048

How to register: http://www.cedars-sinai.edu/RMI

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Leading stem cell scientists to focus on diabetes, eye diseases at Cedars-Sinai symposium

America Stem Cell, Inc. Awarded a Phase I STTR to Explore the Therapeutic Potential of Its Platform Technology (ASC …

SAN ANTONIO--(BUSINESS WIRE)--

America Stem Cell, Inc. (ASC) today announced that it has been awarded an Advanced Technology Small Business Technology Transfer Research (STTR) grant from the National Heart Lung and Blood Institute at the National Institutes of Health. This grant will be conducted in collaboration with scientists at the Wake Forest Institute of Regenerative Medicine (WFIRM) in Winston-Salem, NC, and will explore the combination of two technologies: ASC-101 developed by America Stem Cell and amniotic fluid-derived stem cells discovered and pioneered by Dr. Shay Soker and colleagues at WFIRM. We will examine the effect of ASC-101-treated amniotic fluid-derived stem cells in an experimental model of compartment syndrome. Compartment syndrome results from a variety of injuries such as fractures, contusions, burns, trauma, post-ischemic swelling and blast injuries such as gunshot wounds. If not addressed quickly, it can lead to considerable loss of muscle tissue. Musculoskeletal disorders are the primary cause of disability in the United States with associated costs of more than $800 billion annually. In addition to civilian injuries, more than 42,000 soldiers have been injured since the beginning of the Iraq and Afghanistan wars: the majority of these injuries were musculoskeletal in nature.

America Stem Cell has demonstrated that ASC-101 enhances the ability of stem cells to migrate to their target tissue. While most companies are concerned with the type of cells used for cell therapy (i.e. the hardware), America Stem Cell addresses how to get the cells to go where they are needed most (i.e. the software). With this award, America Stem Cell will expand the potential for therapeutic application of ASC-101 with amniotic fluid-derived stem cells. According to Dr. Leonard Miller, the Co-Principal Investigator on the grant, The successful combination of ASC-101 with amniotic fluid-derived stem cells would be directly relevant to improving the treatment of muscle damage that occurs following compartment syndrome as well as multiple other types of injuries.

America Stem Cell, Inc. is a clinical stage company that is in clinical trials at the University of Texas M.D. Anderson Cancer Center for improving clinical outcomes for cancer patients undergoing hematopoietic stem cell transplantation. This award enables America Stem Cell to expand the development of ASC-101 to yet another cell type. Lynnet Koh, CEO of America Stem Cell, noted, The combination of ASC-101 with amniotic fluid-derived stem cells could synergistically enhance the therapeutic and regenerative capacity of these cells and most importantly provide an off-the-shelf, effective solution for tissue damage due to multiple types of injuries or diseases. ASC-101 is a transformative technology with the potential to improve clinical outcomes for patients undergoing a wide variety of cell therapies for the treatment of diseases such as graft versus host disease, diabetic complications, and ischemic diseases such as myocardial infarctions, retinopathy and critical limb ischemia. America Stem Cell has established a number of collaborations examining the potential of ASC-101 to improve cell therapies for multiple clinical conditions using a wide variety of cell types.

About America Stem Cell, Inc.

America Stem Cell is a privately held biotechnology company based in San Antonio, TX, with offices in San Diego, CA, and is dedicated to the development and commercialization of enabling technologies to enhance and expand the therapeutic potential of cell therapies. The key technology platforms (ASC-101 and ASC-102) are designed to improve the homing and engraftment of cells to target organs. ASC-101 is currently in clinical trials to improve the therapeutic potential of hematopoietic stem cells for patients in need of hematopoietic stem cell transplantation. Additionally, these technologies have the potential to enhance the efficacy of cell therapies for the treatment of inflammation from chemotherapy/radiation, autoimmune diseases, and ischemic diseases including myocardial infarction and stroke. America Stem Cell has partnerships and collaborations with Kyowa Hakko Kirin, Spectrum Medical Innvoations, Florida Biologix, and various medical research institutions including the University of Texas M.D. Anderson Cancer Center, Oklahoma Medical Research Foundation, Fred Hutchinson Cancer Center,,University of California San Diego, Sanford-Burnham Institute, Indiana University, Juvenile Diabetes Research Foundation, as well as corporate partnerships. For additional information, please contact Lynnet Koh at 210-410-6427, or view http://www.americastemcell.com.

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America Stem Cell, Inc. Awarded a Phase I STTR to Explore the Therapeutic Potential of Its Platform Technology (ASC ...

Paralyzed Rats Walk Again After Stem Cell Transplant

Rats once paralyzed from complete surgical cuts through their spinal cords can walk again after stem cells were transplanted into the site of the injury, report researchers today in the journal Cell. The results suggest that stem cells might work as a treatment for patients even if they have completely severed cords, a potential therapy that has been viewed skeptically by many in the field.

Neural stem cells, derived from aborted fetal spinal cord tissue, were implanted onto each side of the spinal cord injury in the rats along with a supportive matrix and molecular growth factors. The human stem cells grew into the site of injury and extended delicate cellular projections called axons into the rats spinal cord, despite the known growth-inhibiting environment of the injured spinal cord. The rats' own neurons sent axons into the transplanted material and the rats were able to move all joints of their hind legs.

The cells are produced by a Rockville, Maryland company called Neuralstem. The same cells are also being tested in ALS patients (see "New Cells for ALS Patients") where they have shown some promise of stabilizing the progressive disease. Last month, the company announced that it has asked to FDA to approve a trial to test the cells in spinal cord-injured patients.

Researchers are currently testing neural stem cells from a Newark, California-based company called StemCells Inc, in spinal cord injured patients; two of the three patients have reported the recover of some sensation (see "Human Stem Cells Found to Restore Memory" for an overview of the company).

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Paralyzed Rats Walk Again After Stem Cell Transplant

Marlee Matlin fears for deaf stem-cell treatment

British researchers have been able to rebuild nerves in the ears of gerbils, and it is believed the same technique could one day be applicable to deaf humans.

However, Oscar-winning actress Matlin, who has been deaf since she was 18 months old, is worried about the implications of the development.

In a series of posts on Twitter.com, she writes, "'Deafness cure' is trending (on Twitter). My concern is that it's bigger than a 'trend.' It involves people & not as simple as the 4 letters in 'cure.' For those who think being deaf is a handicap, there are millions of Americans who sign, who are deaf, and are not a 'disease' to cure.

"Think about this. What if someone told you that you could've been made different than the content person you are with genetics. Would you? Now think how millions of deaf people who lead productive lives, would feel when told that babies born deaf can be 'cured'."

Matlin also told followers, "Be proud of who you are, regardless of what people think is a 'handicap' or 'normal.' Normal is what you want to be. Don't let anyone tell you who or what you should be."

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Marlee Matlin fears for deaf stem-cell treatment

Human stem cell treatment restores hearing in gerbils

A UK study in the journal Nature reports that deaf gerbils have had their hearing restored following a human stem cell treatment.

The researchers at the University of Sheffield, including Dr. Marcelo Rivolta, aimed to replace damaged nerve cells, called spiral ganglion neurons, that are unable to convert sound waves in the air into electrical signals to your brain. Roughly one in 10 people with profound hearing loss have this auditory damage, according to the LA Times.

The researchers used stem cells from a human embryo, added that to a "chemical soup," as the BBC referred to it, that converted them into cells similar to the spiral ganglion neurons. The cells were then injected into the inner ears of 18 gerbils.

Over the course of the 10 week study the gerbils' hearing improved by an average of 45 percent.

Rivolta told the BBC, "It would mean going from being so deaf that you wouldn't be able to hear a lorry or truck in the street to the point where you would be able to hear a conversation. It is not a complete cure, they will not be able to hear a whisper, but they would certainly be able to maintain a conversation in a room."

The LA Times noted that the researchers hope this study will spark a new interest in using stem cells to treat hearing loss in people.

But stem cell research is still highly controversial. The AP explained that human embryonic stem cells are initially obtained by destroying embryos, but they can be manipulated to produce any type of cell.

http://www.globalpost.com/dispatch/news/health/120913/human-stem-cell-treatment-restores-hearing-gerbils

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Human stem cell treatment restores hearing in gerbils

Deaf Gerbils Can Hear Again After Stem Cell Treatment

Researchers at the University of Sheffield in the UK have been able to restore the hearing of deaf gerbils using stem cells, they reported yesterday in the journal Nature. If it works in humans, this new therapeutic strategy could improve the lives of people that are hard-of-hearing.

There are different types of deafness, but this research focuses on auditory neuropathy. This disorder occurs when sound enters the inner ear normally but the signals created by the ear are lost along the way to the brain. In the ear, sound waves are translated into electrical signals when they vibrate tiny hair cells in your inner ear. Loss or damage of these hair cells and the brain cells they communicate with make hearing difficult.

The animals were deafened in one ear using a drug to destroy their auditory nerves before receiving an injection of around 50,000 human embryonic stem cells, which had previously been treated with chemicals to coax them into becoming ear cells.

Gerbils were used because of they hear a similar sound range as humans. After the treatment the researchers looked for brain signals created in response to sounds to detect improvement: Some gerbils restored up to 90 percent of the hearing within 10 weeks of the treatment.

BBC News spoke to Dr. Marcelo Rivolta of the Department of Biomedical Sciences at the University of Sheffield and he acknowledges that this is not a complete cure and while someone may still not be able to hear a whisper, they will certainly be able to maintain a conversation in a room.

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Deaf Gerbils Can Hear Again After Stem Cell Treatment

Neuralstem Gains on Stem Cell Therapy for Paralyzed Rats

By Ryan Flinn - 2012-09-13T20:06:09Z

Neuralstem Inc. (CUR), a biotechnology company with no approved products, gained the most ever after saying its stem cell treatment restored paralyzed rats ability to move in an early study.

Neuralstem rose 38 percent to $1.38 at the close of trading in New York, its largest single-day gain since the shares first started trading in December 2006. The Rockville, Maryland-based companys stock has gained 43 percent this year.

Researchers severed the spinal vertebrae of 12 rats, then gave half of them Neuralstems stem cells a week after the injury, according to the study published today in the journal Cell. The rats that received the injections gained significant locomotor recovery, according to a company statement.

The U.S. Food and Drug Administration placed a hold on Neuralstems proposed human trial to treat spinal cord injury in October 2010, according to a company filing.

We think that this paper is the last piece of the puzzle to get the FDA to take our spinal cord injury trial off hold, Richard Garr, chief executive officer, said in an interview.

Neuralstem also is testing its therapy in early human clinical trials for amyotrophic lateral sclerosis, known as Lou Gehrigs disease, and for depression.

To contact the reporter on this story: Ryan Flinn in San Francisco at rflinn@bloomberg.net

To contact the editor responsible for this story: Reg Gale at rgale5@bloomberg.net

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Neuralstem Gains on Stem Cell Therapy for Paralyzed Rats

Stem cell treatment restores hearing in gerbils

A novel treatment using human embryonic stem cells has successfully restored some hearing to previously deaf gerbils, according to a study published this week in the journal Nature.

Hearing loss is generally caused by the interruption of two different types of cells: The loss of hair cells in the ear, which transform vibrations into electrical signals, and loss of the auditory nerve, which transmits the signals detected by the hair cells to the brainstem. While cochlear implants have proven effective in restoring hearing in cases of hair cell damage, no such treatment has existed for the roughly 10% cases in which the auditory nerve itself is damaged.

The new strategy, designed by Marcelo Rivolta and his team at the University of Sheffield, uses techniques the group has recently developed to coax human embryonic stem cells to differentiate into what are called "otic progenitor cells" -- cells that have the possibility to develop further into either hair cells or auditory nerve cells. The progenitor cells are then transplanted into the ears of gerbils with damaged auditory nerves, and allowed to differentiate further. Gerbils were used in the experiment because they hear a similar range of sounds as humans do.

At that point, the researchers held their breath, hoping that the cells would integrate themselves with the existing infrastructure and take their place in the chain of sensory signaling between the hair cells and the brainstem. In nearly all cases, the scientists could clearly see under the microscope that the new cells had targeted the right spots, reconnecting the hair cells to the brainstem.

But the ultimate test is hearing itself. To test this, the researchers used a standard approach called auditory-evoked responses, which are detected in the brainstem and provide a clear verdict of whether or not sound is being successfully transmitted to the brain.

Control animals with their auditory nerves knocked out did not recover during the experiment -- in order for a sound to register an auditory-evoked response in the brainstem, the control animals basically had to be at a rock concert, requiring a 76-decibel sound. But in the treated animals, that number dropped to 50 decibels on average, and in some animals approached the levels of animals whose hearing was never damaged at all. The strength of the effect was akin to suddenly being able to hear someone talking while previously not being able to hear them yell.

The researchers hope that their method will spark a new interest in using stem cells to treat hearing loss in people, though much work needs to be done before that is a real possibility. Hurdles include developing a surgical technique to access the appropriate part of the ear in people, and ensuring that the treatment sticks over long periods of time.

Nevertheless, the scientists are optimistic that the approach can be directly translated to humans with hearing loss, finally allowing people who cannot benefit from a cochlear implant to hear again.

You can read a summary of the paper here.

Return to the Science Now blog.

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Stem cell treatment restores hearing in gerbils

Deaf gerbils hear again with human stem cells

Scientists have restored hearing to deaf gerbils using human embryonic stem cells in an advance that could eventually help people with an intractable form of deafness caused by nerve damage.

The procedure needs further animal research to assess safety and long-term effectiveness but researchers said on Wednesday the experiment was an important proof of concept, marking a further advance in the growing field of regenerative medicine.

Marcelo Rivolta from Britain's University of Sheffield, who led the research, said the first patients could receive cell therapy for hearing loss in clinical trials in "a few years".

After treating 18 gerbils with complete deafness in one ear, his team reported in the journal Nature that stem cells produced an average 46 percent recovery in hearing function, as measured by electrical signals in the animals' brains.

"If this was a human patient, it would mean going from being so deaf as to be unable to hear a lorry or truck on the street to being able to maintain a conversation," Rivolta told reporters.

"What we have shown here is functional recovery using human stem cells, which is unique."

Gerbils were selected for the test because their hearing range is similar to that of humans, while mice - the usual choice for laboratory tests - hear at higher frequencies.

The animals were deafened using a drug to destroy their auditory nerves before receiving an injection of around 50,000 human embryonic stem cells, which had previously been treated with growth factors to coax them into becoming ear cells.

The response among the gerbils varied, depending on how well the new cells were integrated into the cochlea, the spiral-shaped cavity in the inner ear.

Deafness is caused primarily by loss of sensory hair cells in the ear and auditory nerves. Since these cells are created only in the womb, there is no way to repair them once they have been damaged, resulting in permanent hearing loss.

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Deaf gerbils hear again with human stem cells

'Berlin Man,' Doctor Convinced HIV Cure Is Real

The first person reportedly cured of HIV said Wednesday he is hopeful that medical advances will allow others suffering from the virus that causes AIDS to be cured, too.

Timothy Ray Brown of San Francisco is known as "The Berlin Patient" because of where he was treated. He and the doctor who treated him, Gero Hutter, made their first joint appearance in the U.S. on Wednesday when Hutter spoke at a symposium on gene therapy at Washington University in St. Louis.

Scientists are studying whether gene therapy can be used to rid the body of HIV. Some doctors remain skeptical that Brown, 46, is cured. His case was first reported in the media in 2008 and described in the New England Journal of Medicine in 2009.

Brown and Hutter, in an interview with The Associated Press during the symposium, said the passage of time is further proof that Brown is cured. Hutter cited the same five-year standard after which some cancer patients are said to be cured.

Brown was diagnosed with HIV in 1995. In 2006, he also developed leukemia while living in Germany. Hutter performed a blood stem cell transplant using a donor with a rare gene mutation that provides natural resistance to HIV. Hutter said that resistance transferred to Brown.

Brown said he feels great, has not needed HIV medication since the 2007 surgery, and is now active in a foundation named for him that seeks a cure for HIV.

Brown grew up in Seattle and moved to Germany in 1993. After the HIV diagnosis, he started on medication to prevent him from developing full-blown AIDS.

He was attending a wedding in New York in 2006 when he became unusually tired. An avid cyclist, within weeks he could barely ride the bike and eventually was diagnosed with leukemia.

Brown underwent chemotherapy but needed a blood stem cell transplant and turned to Hutter, a blood specialist at Heidelberg University.

Hutter suggested they seek a donor with a certain cell feature that gives them natural resistance to HIV infection. Only about 1 percent of the northern European population has this feature. Hutter theorized that a transplant from such a donor could make the recipient resistant to HIV.

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'Berlin Man,' Doctor Convinced HIV Cure Is Real