Stem Cell Clinic

Stem cell therapy for cornea treatment

By Stem Cell Treatment

Hyderabad, June 2:

Picking stem cells from a patients body, sending it to a sophisticated laboratory to culture a tissue and then implanting it are pass.

A team of doctors at L.V. Prasad Eye Institute has used the tea bag or sprinkler approach to regenerate stem cells. The organisation has developed a lab-free technique that could be available off-the-shelf. This allows eye surgeons with usual facilities to perform the procedure.

The team, led by Dr Virender Singh Sangwan, used this technique to treat those who suffered chemical injuries, resulting in bleeding in the cornea.

Instead of sending stem cells to the lab for culture, the doctor picked the required number of stem cells around the cornea and sprinkled on the damaged area and then put a contact lens. In 15 days, he sees development of a good layer in the place of injured area, Prof. Balasubramanian, Head of Research at LVPEI, said.

A winner of the prestigious Shanti Swarup Bhatnagar prize, Dr Sangwan said he had conducted the procedure on about 25 patients with good results. This had been published in international scientific magazines.

He is now in the process of developing tools to help doctors.

Leber Congenital Amaurosis

Children down with the rare ocular disorders that result in gradual loss of sight can hope for a cure. Doctors are working on a gene therapy to correct this problem caused by consanguineous marriages.

Though this therapy is in vogue abroad, LVPEI says it is the first centre to carry out research on this procedure. Technically called LCA or Leber Congenital Amaurosis, doctors would refer patients to a gene analysis after studying them for indications.

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Stem cell therapy for cornea treatment

NCAA baseball: Mike Kent of Clemson’s biggest save came away from the diamond

By Stem Cell Doctors

CLEMSON, S.C. The cells Mike Kents own cells, the donated stem cells now coursing through his stricken brothers body are working just fine. Thats what they tell him. His family and the doctors are careful to shield Mike, just 21 years old, from most of the bad news regarding Matts battle with Hodgkins lymphoma and lately there has been plenty of it. But they always make sure to tell him: Your cells are doing great.

It can mess with your head, being a stem-cell donor to your own brother. If something goes wrong, it is only natural to wonder if it was your fault. Were your cells bad? And Mike Kent, a 2009 Washington Post All-Met selection at West Springfield High, has enough on his plate right now not just Matts three-year fight with cancer, but also his own baseball career at Clemson to be saddled with all that guilt. Clemson opens play in the NCAA regionals at Columbia, S.C., on Friday.

(Family photo) - Mike Kent, right, poses with his brother, Matt, when Mike was a high school senior and a pitcher for the West Springfield, Va, baseball team.

Because now, Matts liver is failing, the veins breaking down from the high doses of chemotherapy and radiation. He floats in and out of consciousness in the intensive-care unit at the University of Maryland Medical Center in Baltimore, unaware of his surroundings.

Ill be honest: Ive asked them, Is he going to survive this? said Susan Kent, Matt and Mikes mother, a look of sheer resolve on her face. Of course, the doctors wont answer.

Such an awkward spot for a mother who had raised two boys on her own. One of them, a college sophomore, is playing out his dream, preparing to pitch in college baseballs national championship tournament, his life spread out before him. The other son, 26 years old and a late-bloomer who was just starting to get his life in order before the diagnosis, is fighting for his life.

How do you handle such a fate? You play up the positives, thats how. You visit Matt in the hospital Matt being the one who taught Mike the game of baseball, in the absence of a father and you tell him, in great detail, about all of Mikes solid outings at Clemson: the scoreless relief appearances, the saves. And you spare him the gory details about the ugly ones the three-run homers, the bases-loaded walks, the losses.

And you give Mike the barest of details about Matts setbacks: There are some complications. Some side effects. But while Mike knows most of the more pertinent information the liver failure, the ICU you emphasize what is important, the thing Mike needs to know: Your cells are doing great.

Throwing extra innings

The injections, the doctors told Mike, would make him feel like he had the flu. The drug, Neupogen, was being given in eight doses, spread over four days to produce and stimulate white blood cells in his body in preparation for the stem cell transplant. One thing he shouldnt try to do, they told him, was play baseball.

Originally posted here:
NCAA baseball: Mike Kent of Clemson’s biggest save came away from the diamond

Mechanism that maintains stem cells readiness identified

By Stem Cell Medical Center

ScienceDaily (May 31, 2012) An immune-system receptor plays an unexpected but crucially important role in keeping stem cells from differentiating and in helping blood cancer cells grow, researchers at UT Southwestern Medical Center report today in the journal Nature.

"Cancer cells grow rapidly in part because they fail to differentiate into mature cells. Drugs that induce differentiation can be used to treat cancers," said Dr. Chengcheng "Alec" Zhang, assistant professor in UT Southwestern's departments of physiology and developmental biology. "Our research identified a protein receptor on cancer cells that inhibits differentiation, and knowing the identity of this protein should facilitate the development of new drugs to treat cancers."

The family of proteins investigated in the study could help open a new field of biology integrating immunology with stem cell and cancer research, he added.

"The receptor we identified turned out to be a protein called a classical immune inhibitory receptor, which is known to maintain stemness of normal adult stem cells and to be important in the development of leukemia," he said.

Stemness refers to the blood stem cells' potential to develop into a range of different kinds of cells as needed, for instance to replenish red blood cells lost to bleeding or to produce more white blood cells to fight off infection. Once stem cells differentiate into adult cells, they cannot go back to being stem cells. Current thinking is that the body has a finite number of stem cells and it is best to avoid depleting them, Dr. Zhang explained.

Prior to this study, no high-affinity receptors had been identified for the family of seven proteins called the human angiopoetic-like proteins. These seven proteins are known to be involved in inflammation, supporting the activity of stem cells, breaking down fats in the blood, and growing new blood vessels to nourish tumors. Because the receptor to which these proteins bind had not been identified, the angiopoetic-like proteins were referred to as "orphans," he said.

The researchers found that the human immune-inhibitory receptor LILRB2 and a corresponding receptor on the surface of mouse cells bind to several of the angiopoetic-like proteins. Further studies, Dr. Zhang said, showed that two of the seven family members bind particularly well to the LILRB2 receptor and that binding exerts an inhibitory effect on the cell, similar to a car's brakes.

In the case of stem cells, inhibition keeps them in their stem state. They retain their potential to mature into all kinds of blood cells as needed but they don't use up their energy differentiating into mature cells. That inhibition helps stem cells maintain their potential to create new stem cells because in addition to differentiation, self-renewal is the cells' other major activity, Dr. Zhang said. He stressed that the inhibition doesn't cause them to create new stem cells but does preserve their potential to do so.

In future research, the scientists hope to find subtle differences between stem cells and leukemia cells that will identify treatments to block the receptors' action only in leukemia.

Other UT Southwestern researchers involved in the study from the departments of physiology and developmental biology include postdoctoral researchers Dr. ChangHao Cui, Dr. Xiaoli Chen, Dr. Chaozheng Zhang, Dr. HoangDinh Huynh, and Dr. Xunlei Kang; senior research associates Robert Silvany and Jiyuan Li; and graduate student Xuan Wan. Researchers from the department of immunology include former technician Alberto Puig Cant and Dr. E. Sally Ward, professor of immunology.

Here is the original post:
Mechanism that maintains stem cells readiness identified

Researchers identify mechanism that maintains stem cells readiness

By Stem Cell Medical Center

An immune-system receptor plays an unexpected but crucially important role in keeping stem cells from differentiating and in helping blood cancer cells grow, researchers at UT Southwestern Medical Center report today in the journal Nature.

"Cancer cells grow rapidly in part because they fail to differentiate into mature cells. Drugs that induce differentiation can be used to treat cancers," said Dr. Chengcheng "Alec" Zhang, assistant professor in UT Southwestern's departments of physiology and developmental biology. "Our research identified a protein receptor on cancer cells that induces differentiation, and knowing the identity of this protein should facilitate the development of new drugs to treat cancers."

The family of proteins investigated in the study could help open a new field of biology integrating immunology with stem cell and cancer research, he added.

"The receptor we identified turned out to be a protein called a classical immune inhibitory receptor, which is known to maintain stemness of normal adult stem cells and to be important in the development of leukemia," he said.

Stemness refers to the blood stem cells' potential to develop into a range of different kinds of cells as needed, for instance to replenish red blood cells lost to bleeding or to produce more white blood cells to fight off infection. Once stem cells differentiate into adult cells, they cannot go back to being stem cells. Current thinking is that the body has a finite number of stem cells and it is best to avoid depleting them, Dr. Zhang explained.

Prior to this study, no high-affinity receptors had been identified for the family of seven proteins called the human angiopoetic-like proteins. These seven proteins are known to be involved in inflammation, supporting the activity of stem cells, breaking down fats in the blood, and growing new blood vessels to nourish tumors. Because the receptor to which these proteins bind had not been identified, the angiopoetic-like proteins were referred to as "orphans," he said.

The researchers found that the human immune-inhibitory receptor LILRB2 and a corresponding receptor on the surface of mouse cells bind to several of the angiopoetic-like proteins. Further studies, Dr. Zhang said, showed that two of the seven family members bind particularly well to the LILRB2 receptor and that binding exerts an inhibitory effect on the cell, similar to a car's brakes.

In the case of stem cells, inhibition keeps them in their stem state. They retain their potential to mature into all kinds of blood cells as needed but they don't use up their energy differentiating into mature cells. That inhibition helps stem cells maintain their potential to create new stem cells because in addition to differentiation, self-renewal is the cells' other major activity, Dr. Zhang said. He stressed that the inhibition doesn't cause them to create new stem cells but does preserve their potential to do so.

In future research, the scientists hope to find subtle differences between stem cells and leukemia cells that will identify treatments to block the receptors' action only in leukemia.

Journal reference: Nature

Continued here:
Researchers identify mechanism that maintains stem cells readiness

UT Southwestern Researchers Identify Mechanism That Maintains Stem-Cell Readiness, Helps Leukemia Cells Growth

By Stem Cell Medical Center

Newswise DALLAS May 31, 2012 An immune-system receptor plays an unexpected but crucially important role in keeping stem cells from differentiating and in helping blood cancer cells grow, researchers at UT Southwestern Medical Center report today in the journal Nature.

Cancer cells grow rapidly in part because they fail to differentiate into mature cells. Drugs that induce differentiation can be used to treat cancers, said Dr. Chengcheng Alec Zhang, assistant professor in UT Southwesterns departments of physiology and developmental biology. Our research identified a protein receptor on cancer cells that inhibits differentiation, and knowing the identity of this protein should facilitate the development of new drugs to treat cancers.

The family of proteins investigated in the study could help open a new field of biology integrating immunology with stem cell and cancer research, he added.

The receptor we identified turned out to be a protein called a classical immune inhibitory receptor, which is known to maintain stemness of normal adult stem cells and to be important in the development of leukemia, he said.

Stemness refers to the blood stem cells potential to develop into a range of different kinds of cells as needed, for instance to replenish red blood cells lost to bleeding or to produce more white blood cells to fight off infection. Once stem cells differentiate into adult cells, they cannot go back to being stem cells. Current thinking is that the body has a finite number of stem cells and it is best to avoid depleting them, Dr. Zhang explained.

Prior to this study, no high-affinity receptors had been identified for the family of seven proteins called the human angiopoetic-like proteins. These seven proteins are known to be involved in inflammation, supporting the activity of stem cells, breaking down fats in the blood, and growing new blood vessels to nourish tumors. Because the receptor to which these proteins bind had not been identified, the angiopoetic-like proteins were referred to as orphans, he said.

The researchers found that the human immune-inhibitory receptor LILRB2 and a corresponding receptor on the surface of mouse cells bind to several of the angiopoetic-like proteins. Further studies, Dr. Zhang said, showed that two of the seven family members bind particularly well to the LILRB2 receptor and that binding exerts an inhibitory effect on the cell, similar to a cars brakes.

In the case of stem cells, inhibition keeps them in their stem state. They retain their potential to mature into all kinds of blood cells as needed but they dont use up their energy differentiating into mature cells. That inhibition helps stem cells maintain their potential to create new stem cells because in addition to differentiation, self-renewal is the cells other major activity, Dr. Zhang said. He stressed that the inhibition doesnt cause them to create new stem cells but does preserve their potential to do so.

In future research, the scientists hope to find subtle differences between stem cells and leukemia cells that will identify treatments to block the receptors action only in leukemia.

Other UT Southwestern researchers involved in the study from the departments of physiology and developmental biology include postdoctoral researchers Dr. ChangHao Cui, Dr. Xiaoli Chen, Dr. Chaozheng Zhang, Dr. HoangDinh Huynh, and Dr. Xunlei Kang; senior research associates Robert Silvany and Jiyuan Li; and graduate student Xuan Wan. Researchers from the department of immunology include former technician Alberto Puig Cant and Dr. E. Sally Ward, professor of immunology.

More:
UT Southwestern Researchers Identify Mechanism That Maintains Stem-Cell Readiness, Helps Leukemia Cells Growth

NeoStem to Present at Six Conferences in June

By Uncategorized

NEW YORK, May 31, 2012 (GLOBE NEWSWIRE) -- NeoStem, Inc. (NYSE Amex:NBS) ("NeoStem" or the "Company"), an international biopharmaceutical company focused on cell based therapies, announced today that Company management will present at six conferences in June.

International Society for Cellular Therapy Annual Meeting

National Investment Banking Association Conference

International Society for Stem Cell Research 10th Annual Meeting

The Biotechnology Industry Organization (BIO) International Conference

Alliance for Regenerative Medicine -- Clinical Outlooks for Regenerative Medicine 2012

Marcum's Inaugural MicroCap Conference

About NeoStem, Inc.

NeoStem, Inc. ("NeoStem") is a leader in the development and manufacture of cell therapies. NeoStem has a strategic combination of revenues, including that which is derived from the contract manufacturing services performed by Progenitor Cell Therapy, LLC, a NeoStem company. That manufacturing base is one of the few cGMP facilities available for contracting in the burgeoning cell therapy industry, and it is the combination of PCT's core expertise in manufacturing and NeoStem's extensive research capabilities that positions the company as a leader in cell therapy development. Amorcyte, LLC, also a NeoStem company, is developing a cell therapy for the treatment of cardiovascular disease. Amorcyte's lead compound, AMR-001, represents NeoStem's most clinically advanced therapeutic and is enrolling patients in a Phase 2 trial for the preservation of heart function after a heart attack. Amorcyte expects to begin a Phase 1 clinical trial in 2012/2013 for AMR-001 for the treatment of patients with congestive heart failure. Athelos Corporation, also a NeoStem company, is developing a T-cell therapy for a range of autoimmune conditions with its partner Becton-Dickinson. NeoStem's pre-clinical assets include its VSEL(TM) Technology platform for regenerative medicine, which NeoStem believes to be an endogenous, pluripotent, non-embryonic stem cell that has the potential to change the paradigm of cell therapy as we know it today.

For more information on NeoStem, please visit http://www.neostem.com.

See the article here:
NeoStem to Present at Six Conferences in June

Malta opposing EU financing for stem cell research on embryos

By Uncategorized

Stem cell therapy may one day be used to cure disorders such as Fragile-X syndrome, or Cystic fibrosis and other genetic maladies.

Matthew Vella

The Maltese government wants the European Commission to abandon plans to provide funds for research activities on stem cells that involve "the destruction of human embryos".

In a declaration on the ethical principles for the Horizon 2020 programme, which is an 80 billion fund for the EU's programme for research and innovation to create new jobs, the Maltese government said it wanted more detailed guidelines on the bioethical principles that will guide research programmes.

Horizon 2020 will allow the financing of research on human stem cells - both adult and embryonic - as long as it is permitted by the national laws of member states.

The fund however will not finance human cloning, genetic modification, or the creation of human embryos intended for the purpose of research or stem cell procurement.

The European Commission does not explicitly solicit the use of human embryonic stem cells, but Horizon 2020 allows the use of human stem cells according to the objectives of the research, and only if it has the necessary approvals from the member states.

The Maltese declaration echoes previous statements by the Commission of Catholic Bishops of the EC (Comece), which said Horizon 2020 did not include greater protection of human embryos from stem cell research.

Malta says it does not want any such embryos to be used for stem cell research. The statement by the Maltese government said the Horizon 2020 programme "does not take sufficiently into account the therapeutic potential of human adult stem cells."

Malta wants Europe to commit to a reinforcement of research on human adult stem cells, and that Europe should abstain from financing matters of fundamental ethical principles, which differ among member states.

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Malta opposing EU financing for stem cell research on embryos

29 Johns Hopkins stem cell researchers awarded funding

By Stem Cell Treatment

Public release date: 30-May-2012 [ | E-mail | Share ]

Contact: Vanessa McMains vmcmain1@jhmi.edu 410-502-9410 Johns Hopkins Medical Institutions

This year the Maryland Stem Cell Research Fund awarded 29 of 40 grants to Johns Hopkins researchers for the study of stem cell metabolism and regulation, the creation of new cell models for human diseases such as schizophrenia and Rett syndrome, which previously could be studied only in animals, and the development of new potential therapies.

Researchers whose preliminary data promised greater discoveries were awarded Investigator-Initiated grants. Jeff Bulte, Ph.D., professor of radiology, biomedical engineering and chemical and biomolecular engineering and a member of the Institute for Cell Engineering, hopes to develop a cell therapy for treatment of type 1 diabetes an autoimmune disorder in which the immune system kills the insulin-producing cells that help regulate blood sugar. By developing cloaked stem and insulin-producing cells that can evade immune system detection, Bulte and his team hope to replace damaged cells and restore insulin levels in patients.

Grants were awarded to:

Several Johns Hopkins investigators were awarded Exploratory grants for researchers either new to the stem cell field or with untested but promising new ideas. Miroslaw Janowski , M.D., Ph.D., a research associate in radiology, plans to develop a stroke treatment by guiding newly introduced brain cells with magnets through blood vessels to the site of injury.

Exploratory grants were awarded to:

Postdoctoral trainees also will receive funding for research projects. A fellow in biomedical engineering, Pinar Huri, Ph.D., will use her award to develop bone grafts with blood vessels inside made from fat tissue-derived stem cells. The grafts would be used in patients with severely damaged bone in need of reconstructive surgery.

Postdoctoral grants were awarded to:

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29 Johns Hopkins stem cell researchers awarded funding

Breast stem-cell research: Receptor teamwork is required and a new pathway may be involved

By Stem Cell Medicine

Public release date: 30-May-2012 [ | E-mail | Share ]

Contact: Dian Land dj.land@hosp.wisc.edu 608-261-1034 University of Wisconsin-Madison

MADISON Breast-cancer researchers at the University of Wisconsin-Madison have found that two related receptors in a robust signaling pathway must work together as a team to maintain normal activity in mammary stem cells.

Mammary stem cells produce various kinds of breast cell types. They may also drive the development and growth of malignant breast tumors.

Published recently in the Journal of Biological Chemistry, the research also suggests that a new signaling pathway may be involved, a development that eventually could take cancer-drug manufacturers in a new direction.

"We wanted to know if we could use this knowledge to inform us about what might be the transition that occurs to start tumor growth and maintain it," says senior author Dr. Caroline Alexander, professor of oncology at the McArdle Laboratory for Cancer Research at the School of Medicine and Public Health.

The paper describes new information about the Wnt signaling pathway. Wnt signaling underlies numerous activities in normal development, but when the system is unregulated, cancer often occurs.

"Wnt signaling is very important for both stem cells and tumor growth. We need to know the details of the signaling process so that we can use the positive aspects of Wnt signaling for regenerative medicine, and eliminate the negative cancer-causing aspects," says Alexander, a member of the UW Carbone Cancer Center (CCC).

Regenerative biologists typically add Wnt proteins together with other agents to guide the differentiation of lung, bone and heart stem cells, she notes.

The UW researchers zeroed in on two related Wnt receptors on the cell surface--LRP5 and LRP6. The receptors normally respond to Wnt ligands that approach cells to initiate a signaling cascade inside.

Original post:
Breast stem-cell research: Receptor teamwork is required and a new pathway may be involved

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