Category Archives: Stem Cells

LOS ANGELES--(BUSINESS WIRE)--

ImmunoCellular Therapeutics, Ltd. (“ImmunoCellular” or the “Company”) (OTCBB: IMUC –News), a biotechnology company focused on the development of novel immune-based cancer therapies, today announced that John Yu, MD, Chairman and Chief Scientific Officer of ImmunoCellular Therapeutics, will deliver a presentation at the Cambridge Healthtech Institute’s inaugural Targeting Stem Cells Symposium as a part of the 19th Annual Molecular Medicine Tri-Conference from February 19-23, 2012. Dr. Yu will present during a session highlighting Emerging Cancer Stem Cell Therapeutics, featuring the Company’s discovery and development of cancer stem cell therapy.

The Cambridge Healthtech Institute’s Targeting Cancer Stem Cells Symposium reflects a growing interest in cancer stem cells and their developing importance in the field of oncology, as more pharmaceutical and biotech companies have begun to focus on cancer stem cells as oncological drug targets. The symposium will feature case studies from those working with cancer stem cells, a history of the role of cancer stem cells in treatment resistance, as well as highlights from ongoing novel cancer stem cell therapeutic development programs and platforms.

About ImmunoCellular Therapeutics, Ltd.

IMUC is a Los Angeles-based clinical-stage company that is developing immune-based therapies for the treatment of brain and other cancers. The Company recently commenced a Phase II trial of its lead product candidate, ICT-107, a dendritic cell-based vaccine targeting multiple tumor associated antigens including those associated with cancer stem cells for glioblastoma treatment. To learn more about IMUC, please visit www.imuc.com.

Forward-Looking Statements

This press release contains certain forward-looking statements that are subject to a number of risks and uncertainties, including the risk that any patents issued covering IMUC’s vaccine technology will not provide significant commercial protection for IMUC’s technology or products; the risk that the safety and efficacy results obtained in the Phase I trial for the dendritic cell- based vaccine will not be confirmed in subsequent trials; the risk that the correlation between immunological response and progression-free and overall survival in the Phase I trial for ICT-107 will not be reflected in statistically significant larger patient populations; the risk that IMUC will not be able to secure a partner company for development or commercialization of ICT-107. Additional risks and uncertainties are described in IMUC's most recently filed SEC documents, such as its most recent annual report on Form 10-K, all quarterly reports on Form 10-Q and any current reports on Form 8-K. IMUC undertakes no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

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ImmunoCellular Therapeutics To Present at Targeting Stem Cells Symposium during 19th Annual Molecular Medicine Tri ...

DUBLIN--(BUSINESS WIRE)--

Research and Markets (http://www.researchandmarkets.com/research/da14f1/stem_cells_market) has announced the addition of the "Stem Cells Market - Global And China Forecast, Market Share, Size, Growth And Industry Analysis (2010-2017)" report to their offering.

Stem cells are biological cells capable of dividing and self renewing in order to produce more stem cells. The regulatory acceptance of this technology is one of the major forces driving the market, whereas the high cost of therapy might hamper the growth of the stem cells market. Among all global regions, the United States holds approximately 60% of the stem cell market - followed by Europe and Asia Pacific.

The report contains the global scenario of Stem Cells market - discussing detailed overview and market figures. The research report analyses the industry growth rate, industry capacity, and industry structure. The report analyses the historical data and forecasts Stem Cells market size, production forecasts along with key factors driving and restraining the market.

For more information visit http://www.researchandmarkets.com/research/da14f1/stem_cells_market

Contact:

Research and Markets
Laura Wood, Senior Manager
U.S. Fax: 646-607-1907
Fax (outside U.S.): +353-1-481-1716
press@researchandmarkets.com

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Research and Markets: Stem Cells Market 2010-2017: Global And China Forecast, Market Share, Size, Growth And Industry ...

DUBLIN--(BUSINESS WIRE)--

Research and Markets (http://www.researchandmarkets.com/research/0a3b55/targeting_cancer_s) has announced the addition of the "Targeting Cancer Stem Cells: Therapeutic Strategies, Pipeline, Biomarkers and Opportunities 2011" report to their offering.

Cancer Stem Cell (CSC) research has accelerated in recent years and considerable efforts are being made to develop novel agents that target these cells. Today, more than forty companies and commercial research groups are evaluating 20+ strategies and 50 candidate molecules, in the hope of making new advances in this area. CSCs are being targeted using novel single agents as well as combinations, based on new and established classes. This 2011 report gives a comprehensive update on current therapeutic and diagnostic development in this field, on the drug development pipeline and the most promising research areas. New therapeutic and diagnostic opportunities in this field are also presented.

Background:

Many cancers contain a subset of stem-like cells believed to play a critical role in the development and progression of the disease. These cells, named Cancer Stem Cells (CSCs), have been found in leukaemia, myeloma, breast, prostate, pancreatic, colon, brain, lung and other cancers. Findings suggest that CSCs are able to seed new tumour formation and drive metastasis. CSCs also show resistance to a number of chemotherapy drug classes and radiotherapy - which may explain why it is difficult to completely eradicate cancer cells from the body, and why recurrence remains an ever-present threat. If these findings are confirmed in the clinic, the targeting of CSCs alongside the bulk of other cancer cells will offer a new paradigm in cancer therapeutics. Currently, there are more than 50 CSC R&D programmes in progress, around 50% of which are at Phases I-III. Patient data from the first clinical trials on CSC-targeting drugs are now being reported. More than two thirds of CSC R&D programmes are being taken forward by SME's, and 'greater than' 90% of the patents in this field have been filed by Universities. Substantial opportunity for collaboration exists in this field, and this has lead to agreements between SMEs and number of international pharmaceutical companies.

Drug Pipeline:

Approximately 20 different strategies, which are described in this report, are being pursued in the hope of discovering ways of selectively targeting CSCs. Recently for example, at the CTRC-AACR San Antonio Breast Cancer Symposium in December 2009, data were presented on the targeting of chemotherapy-resistant breast CSCs with the Merck compound MK-0752, a gamma-secretase inhibitor that targets the Notch pathway. In a study involving 35 women with advanced breast cancer, biopsies revealed reduced numbers of breast CSCs. In this particular case, it was suggested that combination therapies involving agents that also target the Notch pathway (believed to be important in CSC renewal) may offer more powerful strategies for killing resistant CSC populations.

Cancer Diagnostics:

CSCs are believed to be causally linked to the development and metastatic spread of cancer. If this is confirmed in the clinic, this will place CSCs at the heart of cancer diagnostics and biomarkers. Scientists have identified a number of surface proteins, such as CD44, CD133 and many others, that may have important utility in both of these areas. A number of intracellular markers found in CSCs may also have diagnostic utility. These developments are described in this report. For example, CD133 mRNA levels in peripheral blood, measured using RT-PCR, have been found to predict colon cancer recurrence. There is a need for new methodologies that isolate and characterise circulating tumour cells (CTCs) in the blood, and can be applied to CSCs. CTC technologies using the EpCam marker to isolate these cells are able to predict breast and colon cancer recurrence. The adaption of these techniques, based on specific CSC phenotypes, may provide sensitive new methods for identifying CSCs in the body. If this is achieved, it will have important implications in therapeutic decision-making and monitoring.

This 2011 report gives a comprehensive and up-to-date review of global R&D on CSCs, and strategies to target them. This includes around 40 companies or commercially based research organisations (including 27 SMEs and 8 international pharmaceutical companies) that are progressing drug discovery activities, including drug pipeline (pre-clinical to Phase III), discovery strategy, candidate molecules, drug targets, clinical trials and related areas.

Key Topics Covered:

Chapter 1 Cancer Stem Cells

Chapter 2 Research and Development

Chapter 3 Discovery & Pipeline

Chapter 4 Diagnostics

Chapter 5 Opportunities

Chapter 6 Patents

Chapter 7 Conclusions

For more information visit http://www.researchandmarkets.com/research/0a3b55/targeting_cancer_s

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Research and Markets: Targeting Cancer Stem Cells: Therapeutic Strategies, Pipeline, Biomarkers and Opportunities 2011

SAN BRUNO, Calif., Feb. 16, 2012 /PRNewswire/ -- Cord Blood Registry (CBR) is the exclusive partner for a growing number of clinical researchers focusing on the use of a child's own cord blood stem cells to help treat pediatric brain injury and acquired hearing loss. To ensure consistency in cord blood stem cell processing, storage and release for infusion, three separate trials have included CBR in their FDA-authorized protocol—including two at the University of Texas Health Science Center at Houston (UTHealth) working in partnership with Children's Memorial Hermann Hospital, and a third at Georgia Health Sciences University, home of the Medical College of Georgia (MCG). This makes CBR the only family stem cell bank pairing researchers with prospective patients for these studies. 

(Logo: http://photos.prnewswire.com/prnh/20120216/AQ54476LOGO)

"Partnering with a series of specialists who want to research the use of a child's own newborn blood stem cells on a variety of disease states allows CBR to help advance medical research for regenerative therapies by connecting the child whose family banked with CBR to appropriate researchers," said Heather Brown, MS, CGC, Vice President of Scientific & Medical Affairs at Cord Blood Registry.  "The pediatric specialists from UTHealth, Children's Memorial Hermann Hospital, and Georgia Health Sciences University are at the forefront of stem cell research as they evaluate cord blood stem cells' ability to help facilitate the healing process after damage to nerves and tissue."

Hearing Loss and Traumatic Brain Injury Clinical Trials Break New Ground

Sensorineural hearing loss affects approximately 6 per 1,000 children by 18 years of age, with 9 percent resulting from acquired causes such as viral infection and head injury.(1,2,3)  The Principal Investigator of the hearing loss study is Samer Fakhri, M.D., surgeon at Memorial Hermann-Texas Medical Center and associate professor and program director in the Department of Otorhinolaryngology – Head & Neck Surgery at UTHealth.  He is joined by James Baumgartner, M.D., sponsor of the study and guest research collaborator for this first-of-its-kind FDA-regulated, Phase 1 safety study of the use of cord blood stem cells to treat children with acquired hearing loss. The trial follows evidence from published studies in animals that cord blood treatment can repair damaged organs in the inner ear. Clients of CBR who have sustained a post-birth hearing loss and are 6 weeks to 2 years old may be eligible for the year-long study. "The window of opportunity to foster normal language development is limited," said James Baumgartner, M.D.  "This is the first study of its kind with the potential to actually restore hearing in children and allow for more normal speech and language development."

Although the neurologic outcome for nearly all types of brain injury (with the exception of abuse) is better for children than adults,(4,5) trauma is the leading cause of death in children,(6) and the majority of the deaths are attributed to head injury.(7) Distinguished professor of pediatric surgery and pediatrics at UTHealth, Charles S. Cox, M.D. launched an innovative study building on a growing portfolio of research using stem cell-based therapies for neurological damage. The study will enroll 10 children ages 18 months to 17 years who have umbilical cord blood banked with CBR and have suffered a traumatic brain injury (TBI) and are enrolled in the study within 6-18 months of sustaining the injury. Read more about the trial here.

"The reason we have become interested in cord blood cells is because of the possibility of autologous therapy, meaning using your own cells. And the preclinical models have demonstrated some really fascinating neurological preservation effects to really support these Phase 1 trials," says Charles S. Cox, M.D., principle investigator of the trial. "There's anecdotal experience in other types of neurological injuries that reassures us in terms of the safety of the approach and there are some anecdotal hints at it being beneficial in certain types of brain injury."

Georgia Health Sciences University (GHSU) Focuses on Cerebral Palsy

At the GHSU in Augusta, Dr. James Carroll, professor and chief of pediatric neurology, embarked on the first FDA-regulated clinical trial to determine whether an infusion of stem cells from a child's own umbilical cord blood can improve the quality of life for children with cerebral palsy. The study will include 40 children whose parents have stored their cord blood at CBR and meet inclusion criteria. 

"Using a child's own stem cells as a possible treatment is the safest form of stem cell transplantation because it carries virtually no threat of immune system rejection," said Dr. Carroll. "Our focus on cerebral palsy breaks new ground in advancing therapies to change the course of these kinds of brain injury—a condition for which there is currently no cure."

Cerebral palsy, caused by a brain injury or lack of oxygen in the brain before birth or during the first few years of life, can impair movement, learning, hearing, vision and cognitive skills. Two to three children in 1,000 are affected by it, according to the Centers for Disease Control.(8)

Cord Blood Stem Cell Infusions Move From the Lab to the Clinic

These multi-year studies are a first step to move promising pre-clinical or animal research of cord blood stem cells into clinical trials in patients. Through the CBR Center for Regenerative Medicine, CBR will continue to partner with physicians who are interested in advancing cellular therapies in regenerative applications.

"The benefits of cord blood stem cells being very young, easy to obtain, unspecialized cells which have had limited exposure to environmental toxins or infectious diseases and easy to store for long terms without any loss of function, make them an attractive source for cellular therapy researchers today," adds Brown. "We are encouraged to see interest from such diverse researchers from neurosurgeons to endocrinologists and cardiac specialists."

About CBR

CBR® (Cord Blood Registry®) is the world's largest and most experienced cord blood bank.  The company has consistently led the industry in technical innovations and supporting clinical trials. It safeguards more than 400,000 cord blood collections for individuals and their families. CBR was the first family bank accredited by AABB and the company's quality standards have been recognized through ISO 9001:2008 certification—the global business standard for quality. CBR has also released more client cord blood units for specific therapeutic use than any other family cord blood bank. Our research and development efforts are focused on helping the world's leading clinical researchers advance regenerative medical therapies. For more information, visit http://www.cordblood.com.

(1)  Bergstrom L, Hemenway WG, Downs MP. A high risk registry to find congenital deafness. Otolaryngol Clin North Am. 1977;4:369-399.
(2)  Billings KR, Kenna MA. Causes of pediatric sensorineural hearing loss: yesterday and today. Arch Otolaryngol Head Neck Surg. 1999 May;125(5):517-21.
(3)  Smith RJ, Bale JF Jr, White KR. Sensorineural hearing loss in children. Lancet. 2005;365(9462):879-890.
(4)  Faul M, Xu L, Wald MM, Coronado VG. Traumatic brain injury in the United States: emergency department visits, hospitalizations, and deaths. Atlanta (GA): Centers for Disease Control and Prevention, National Center for Injury Prevention and Control; 2010.
(5)  Schnitzer, Patricia, PH.D., "Prevention of Unintentional Childhood Injuries", American Academy of Family Physicians, 2006.
(6)  Centers for Disease Control and Prevention, "10 Leading Causes of Death, United States, 1997-2007", WISQARS, National Center for Health Statistics (NCHS), National Vital Statistics System
(7)  Marquez de la Plata, Hart et al, National Institutes of Health, "Impact of Age on Long-term Recovery From Traumatic Brain Injury", Arch Phys Med Rehabilitation, May 2008.
(8)  Centers for Disease Control and Prevention, http://www.cdc.gov/Features/dsCerebralPalsy, accessed February 6, 2012

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Groundbreaking Clinical Trials Study Cord Blood Stem Cells to Help Treat Brain Injury and Hearing Loss

LOS ANGELES--(BUSINESS WIRE)--

Investigators at The Saban Research Institute of Children’s Hospital Los Angeles have found that amniotic fluid stem cells (AFSC) can slow the progression of chronic kidney disease. A new study, published in the current issue of the Journal of the American Society of Nephrology, reveals that these stem cells can protect the kidneys and help maintain their function.

“We believe that this novel and innovative study clearly demonstrates the value and promise for amniotic fluid stem cells,” comments Roger De Filippo, MD, head of the GOFARR Laboratory for Organ Regenerative Research and Cell Therapeutics at The Saban Research Institute.

Using a model for Alport’s Syndrome, Dr. De Filippo’s team, which includes Dr. Laura Perin, one of the original investigators of AFSC and co-director of the GOFARR Laboratory, injected AFSC early in the course of the disease. Alport’s Syndrome is a kidney disease characterized by progressive renal fibrosis. Treatment with AFSC increased survival time and ameliorated the decline in kidney function.

Kidneys are responsible for filtering toxins from the blood. Chronic kidney disease (CKD) affects millions of children and adults in the United States. Characterized by a progressive decline in kidney function, CKD leads to an increase in health problems, including heart disease and diabetes. Those who develop end-stage kidney disease depend on dialysis to clear the waste from their blood and, ultimately, most patients require a kidney transplant in order to survive. With such stark long-term consequences, the new study offers hope to those suffering from the disease and is also a significant advancement in the stem cell research field.

Stem cell therapies have emerged over the last twenty years as a promising new area of biomedical research. While embryonic stem cells remain a controversial subject, AFSC are found in the fluid surrounding a fetus. The cells can be collected via amniocentesis or at birth without any harmful effects. This study demonstrates that the therapeutic benefit of AFSC is similar to that of embryonic stem cells.

“These findings are of significant interest to stem cell researchers. By using these common cells that are easily obtained, we can focus on other types of therapeutic studies that offer hope to many patients with chronic disabilities and disease,” says David Warburton, DSc, MD, director of the Developmental Biology and Regenerative Medicine Research program at The Saban Research Institute. This work was funded in part by a training grant from the California Institute for Regenerative Medicine, GOFARR and the Pasadena Guild of Children’s Hospital Los Angeles.

About Children’s Hospital Los Angeles

Children's Hospital Los Angeles has been named the best children’s hospital in California and among the best in the nation for clinical excellence with its selection to the prestigious US News & World Report Honor Roll. Children’s Hospital is home to The Saban Research Institute, one of the largest and most productive pediatric research facilities in the United States, is one of America's premier teaching hospitals and has been affiliated with the Keck School of Medicine of the University of Southern California since 1932.

For more information, visit www.CHLA.org. Follow us on Twitter, Facebook, YouTube and LinkedIn, or visit our blog: http://www.WeAreChildrens.org.

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Investigators at The Saban Research Institute Demonstrate That Amniotic Fluid Stem Cells Can Slow Progression of ...

Washington, Feb 14 (ANI): Researchers have conducted a stem cell study in mice, which suggests a novel strategy for treating damaged cardiac tissue in patients following a heart attack.

The approach potentially could improve cardiac function, minimize scar size, lead to the development of new blood vessels - and avoid the risk of tissue rejection.

In the investigation, the researchers isolated and characterized a novel type of cardiac stem cell from the heart tissue of middle-aged mice following a heart attack.

Then, in one experiment, they placed the cells in the culture dish and showed they had the ability to differentiate into cardiomyocytes, or "beating heart cells," as well as endothelial cells and smooth muscle cells, all of which make up the heart.

In another, they made copies, or "clones," of the cells and engrafted them in the tissue of other mice of the same genetic background who also had experienced heart attacks. The cells induced angiogenesis, or blood vessel growth, or differentiated, or specialized, into endothelial and smooth muscle cells, improving cardiac function.

"These findings are very exciting," said first author Jianqin Ye, PhD, MD, senior scientist at UCSF's Translational Cardiac Stem Cell Program.

First, "we showed that we can isolate these cells from the heart of middle-aged animals, even after a heart attack." Second, he said, "we determined that we can return these cells to the animals to induce repair."

Importantly, the stem cells were identified and isolated in all four chambers of the heart, potentially making it possible to isolate them from patients' hearts by doing right ventricular biopsies, said Ye.

This procedure is "the safest way of obtaining cells from the heart of live patients, and is relatively easy to perform," he said.

"The finding extends the current knowledge in the field of native cardiac progenitor cell therapy," said senior author Yerem Yeghiazarians, MD, director of UCSF's Translational Cardiac Stem Cell Program and an associate professor at the UCSF Division of Cardiology.

"Most of the previous research has focused on a different subset of cardiac progenitor cells. These novel cardiac precursor cells appear to have great therapeutic potential."

The hope, he said, is that patients who have severe heart failure after a heart attack or have cardiomyopathy would be able to be treated with their own cardiac stem cells to improve the overall health and function of the heart.

Because the cells would have come from the patients, themselves, there would be no concern of cell rejection after therapy.

The findings suggest a potential treatment strategy, said Yeghiazarians. he study has been published online in the journal PLoS ONE. (ANI)

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Patients' own cardiac stem cells could repair 'heart attack' damage

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Sold on stem cells

DUBLIN--(BUSINESS WIRE)--

Research and Markets (http://www.researchandmarkets.com/research/fc9dd6/primary_and_stem_c) has announced the addition of John Wiley and Sons Ltd's new book "Primary and Stem Cells: Gene Transfer Technologies and Applications" to their offering.

This book describes basic cell engineering methods, emphasizing stem cell applications, and use of the genetically modified stem cells in cell therapy and drug discovery. Together, the chapters introduce and offer insights on new techniques for engineering of stem cells and the delivery of transgenes into stem cells via various viral and non-viral systems. The book offers a guide to the types of manipulations currently available to create genetically engineered stem cells that suit any investigator's purpose, whether it's basic science investigation, creation of disease models and screens, or cells for therapeutic applications.

Key Topics Covered:

PART I: CLONING AND GENE DELIVERY

1. DNA Assembly Technologies Based on Homologous Recombination

2. Multigene Assembly for Construction of Synthetic Operons: Creation and Delivery of an Optimized All-IN-One Expression Construct for Generating Mouse iPS Cells

3. Strategies for the Delivery of Naked DNA

PART II: NONINTEGRATING TECHNOLOGIES

4. Episomal Vectors

5. Nonintegrating DNA Virus

6. Nonintegrating RNA Viruses

7. Protein Delivery

PART III: INTEGRATING TECHNOLOGIES

8. Sleeping Beauty Transposon-Mediated Stable Gene Delivery

9. Integrating Viral Vectors for Gene Modifications

10. Bacteriophage Integrases for Site-Specific Integration

11. Improving Gene Targeting Efficiency in Human Pluripotent Stem Cells

PART IV: APPLICATIONS

12. Modified Stem Cells as Disease Models and in Toxicology Screening

13. Screening and Drug Discovery

INDEX

Author:

UMA LAKSHMIPATHY is a principal investigator at Life Technologies. She has a PhD in life sciences, with academic and industry experience in molecular biology and stem cells. Dr. Lakshmipathy holds four patents and has authored more than forty publications.

BHASKAR THYAGARAJAN is a program manager at Life Technologies. He has a PhD in pharmacology, with expertise in the areas of molecular biology, DNA recombination, gene and cell therapy, and protein purification. He holds one patent and has authored more than twenty publications.

For more information visit http://www.researchandmarkets.com/research/fc9dd6/primary_and_stem_c

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Research and Markets: Primary and Stem Cells: Gene Transfer Technologies and Applications

These cancer stem cells are difficult to kill because they don't divide rapidly--a common behavior that most cancer treatments target.

When it comes to cancer cells, a particularly confounding breed called cancer stem cells have proven difficult to kill. Because they divide so slowly, chemo drugs do them little harm, and they appear resistant to heat therapies that are generally good at killing most cells. Some cancer drugs even appear to promote the growth of cancer stem cells.

Suzy V. Torti

(Credit: Wake Forest Baptist Medical Center)

Now, three years after they found that the heat from 30-second laser blasts can kill kidney cancer stem cells, researchers at Wake Forest Baptist Medical Center say the same treatment works to kill breast cancer stem cells as well.

Torti's team tested this photothermal therapy on mice, injecting tumors containing breast cancer stem cells with nanotubes that in and of themselves have no anti-tumor properties. When exposed to 30 seconds of laser light from outside the body, however, those nanotubes vibrated and produced sufficient heat to stop the growth of the entire tumor bulk, including the cancer stem cells.

"[Cancer stem cells] are tough," says lead investigator and biochemistry professor Suzy V. Torti. "The advantage of the nanotube approach is that in addition to eliminating the tumor bulk, it would get rid of the stem cells, so presumably these tumors would be less likely to recur than tumors that were treated with something else, like drugs or radiation."

Torti says that while this study only validates this new type of therapy on breast cancer specifically, it may work on other types of cancer stem cells as well. Many questions about how the heat kills the cells remain, however, and she says it will probably take a good five to 10 years of further study before they can investigate the therapy in human clinical trials.

For now, Torti says that the early success of this approach, detailed in the April 2012 issue of the journal Biomaterials, "gives us a direction to go for a cure." Maybe some day it could serve as a non-invasive alternative to surgically removing certain types of malignant tumors.

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Hot nanotubes blast chemo-resistant breast cancer cells into oblivion

These cancer stem cells are difficult to kill because they don't divide rapidly--a common behavior that most cancer treatments target.

When it comes to cancer cells, a particularly confounding breed called cancer stem cells have proven difficult to kill. Because they divide so slowly, chemo drugs do them little harm, and they appear resistant to heat therapies that are generally good at killing most cells. Some cancer drugs even appear to promote the growth of cancer stem cells.

Suzy V. Torti

(Credit: Wake Forest Baptist Medical Center)

Now, three years after they found that the heat from 30-second laser blasts can kill kidney cancer stem cells, researchers at Wake Forest Baptist Medical Center say the same treatment works to kill breast cancer stem cells as well.

Torti's team tested this photothermal therapy on mice, injecting tumors containing breast cancer stem cells with nanotubes that in and of themselves have no anti-tumor properties. When exposed to 30 seconds of laser light from outside the body, however, those nanotubes vibrated and produced sufficient heat to stop the growth of the entire tumor bulk, including the cancer stem cells.

"[Cancer stem cells] are tough," says lead investigator and biochemistry professor Suzy V. Torti. "The advantage of the nanotube approach is that in addition to eliminating the tumor bulk, it would get rid of the stem cells, so presumably these tumors would be less likely to recur than tumors that were treated with something else, like drugs or radiation."

Torti says that while this study only validates this new type of therapy on breast cancer specifically, it may work on other types of cancer stem cells as well. Many questions about how the heat kills the cells remain, however, and she says it will probably take a good five to 10 years of further study before they can investigate the therapy in human clinical trials.

For now, Torti says that the early success of this approach, detailed in the April 2012 issue of the journal Biomaterials, "gives us a direction to go for a cure." Maybe some day it could serve as a non-invasive alternative to surgically removing certain types of malignant tumors.

Follow this link:
Hot nanotubes blast chemo-resistant cancer cells into oblivion