Sunday, March 01, 2020

Scientists developing a combined vaccine to fight most malignant brain tumor

Scientists are developing a combined vaccine to fight the most deadly form of brain cancer.

A research team led by Nottingham Trent University is hoping to tackle glioblastoma multiforme (GBM) which kills more people than the other 130 types of brain tumor put together.

There is no effective, long-term treatment for GBM – the most malignant and resistant form of brain tumor – and new therapies are urgently required.

The disease carries a very poor prognosis – even after surgery, radiotherapy and chemotherapy, patients have an average survival time of about 14 – 18 months. It is responsible for 5,000 deaths a year in the UK alone.

The new study, led by the NTU’s John van Geest Cancer Research Centre and funded by the Headcase Cancer Trust, will test a combined cancer vaccine which triggers immune responses against molecules that are expressed by GBM tumors.

As it is a combined vaccine, it will target two molecules (TRP2 and WT1) which both play a significant role in GBM and are expressed in many GBM cells.

It is expected that this study will provide a basis on which to move this new approach into the clinical setting.

    We hope to be able to develop effective, vaccine-based treatments for patients with this terrible disease.

    Current treatments for GBM are associated with severe and prolonged side-effects. The disease also has a high probability of recurrence after surgery due to the capacity of GBM cells to spread across large areas of the brain.

    Vaccines can trigger immune responses that protect us from diseases such as hepatitis, measles and tetanus, and such immunotherapies also offer an approach for the treatment of cancer, as they are relatively non-toxic and have the potential to protect against cancer recurrence.”

 Dr. Stéphanie McArdle, scientist in Nottingham Trent University’s John van Geest Cancer Research Centre  Headcase Cancer Trust's founder Colin Speirs’ wife, Becky, died from GBM in 2010. They met while studying at Nottingham Trent University.

Colin said: We’re delighted that Headcase continues to fund this genuinely ground-breaking project with NTU and that I, personally, can put something back into the University.

It’s their radical out-of-the-box thinking that we love; it fits perfectly with Headcase’s strategy to find a cure for this currently incurable disease. We look forward to moving this work, together, into human trials. The future gets written today.”

Professor Graham Pockley, Director of NTU’s John van Geest Cancer Research Centre, said:

It is an exciting period for those of us that are working hard to develop new approaches for turning a patient’s immune system against their tumor – so-called immunotherapy. Although success has been seen in many areas, effective treatments for GBM remain elusive.

Combining a vaccine approach which has already been tested in another setting with strategies for preventing the tumor switching off the immune attack and enabling activated immune cells to enter the brain and reach the tumor has great potential.”

The study also involves Queen Mary, University of London; the University of Nottingham and France’s Hôpital Saint Louis.

The vaccine ‘delivery system’ utilized by the scientists will be Scancell’s ‘Immunobody®’ technology, a version of which has been successfully used to develop SCIB1, an ImmunoBody® vaccine for the treatment of melanoma which has recently shown a highly promising survival trend in a Phase 1/2 clinical trial and is currently being evaluated in an ongoing Phase 2 trial in advanced melanoma patients.


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Saturday, June 08, 2019

Non-surgical therapy to treat brain tumors

Brain tumour is one of the most aggressive forms of malignant tumors and the survival period for a patient is mostly 14 months. Every year about 8,50,000 new cancer cases are diagnosed in India, of which 5,80,000 cancers result in death. More than 60% of these affected patients are in the prime of their life between the ages of 35 and 65 years.

The standard treatment options of cancer include surgery, chemotherapy and radiotherapy which mostly result in partial cure with multiple side effects, deterioration of quality of life which further compounds the emotional and psychological distress associated with cancer patients.

Glioblastoma Multiforme (GBM) is one of the most common type of brain tumors that are known to occur majorly in adults and also in children to some extent. Despite the variety of treatment options available today, malignant gliomas consistently remain a high-mortality disease characterized by a swift and disastrous clinical progression.

Sequentially Programmed Magnetic Field (SPMF) Therapy pioneered and patented by Dr. V G Vasishta have successfully saved and revived lives of over 500 brain tumor cancer patients.With SPMF Therapy, such patients have been treated successfully who have survived for more than five years on average.

SPMF is a unique type of treatment that is non-invasive and safe, painless, affordable, scientifically proven and most effective treatment for brain tumor. A patient’s condition is evaluated using MRI and the Karnofsky Performance Score (KPS) which are the gold standards for evaluating the efficacy of a therapy. This treatment is administered through an advanced medical device called AKTIS SOMA. This therapy is conducted over a 28-day period (one hour a day).

SPMF is a non-surgical treatment that helps degenerate cells in cancer. It has proved to be effective in the treatment of different types of cancer. This technology produces highly complex sequentially programmed magnetic fields, which are computer-controlled and can be precisely focused on to the target tissues with the help of laser guides.

THIS IS ONLY FOR INFORMATION, ALWAYS CONSULT YOU PHYSICIAN BEFORE HAVING ANY PARTICULAR FOOD/ MEDICATION/EXERCISE/OTHER REMEDIES.                                    PS- THOSE INTERESTED IN RECIPES ARE FREE TO  VIEW MY BLOG-                                                                                           https://gseasyrecipes.blogspot.com/                                                                                                                                                FOR INFO ABOUT KNEE REPLACEMENT, YOU CAN VIEW MY BLOG-                                                  https:// kneereplacement-stickclub.blogspot.com/  

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Friday, April 05, 2019

New method better predicts tumour growth rate in 12 cancers

In a new research, scientists have come up with a new formula that predicts tumour growth rate more accurately, a crucial statistic used to schedule screenings and set dosing regimens in cancer treatment.

The mathematical method successfully estimated the doubling time, the amount of time for a tumour to double in size, for 12 types of cancer, ranging from breast and prostate cancers to melanoma.

"This novel method allows clinicians and drug development scientists to use routinely-generated clinical data to infer doubling times of solid tumours. This parameter can be used to design individualised dosing regimens and develop reliable models for anticancer therapeutics," said the Dr.


Tumour doubling time can significantly affect the outcome of anticancer therapy, but the rate is challenging to determine. Current methods calculate doubling time by measuring the size of a tumour at two points in time and assuming cancer will grow at an exponential rate.

However, most doubling times calculated using this method are overestimated, and tiny changes in tumour size can make determining growth rates difficult.

The error impacts the ability of clinicians to schedule optimal follow-up screenings, set effective dosing regimens, and determine whether surgery, chemotherapy or radiation therapy  is the best form of treatment.
 

The researchers instead base their method on data extracted from progression-free survival  plots - the length of time during and after treatment that cancer does not grow or spread.

Progression-free survival plots explained the Dr., inherently contain information that could help identify tumour growth rates.

The investigators examined data from 47 clinical trials that reported plots for any of 12 cancer types: melanoma; pancreatic, lung, prostate, gastric, colorectal and three forms of breast cancer; hepatocellular (liver) and renal cell (kidney) carcinoma; and glioblastoma multiforme (brain).

The cancer growth rates predicted by the researchers using progression-free survival plots were within close range to the reported actual tumour doubling times. 


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Sunday, May 22, 2016

Tiny carrier can help treat brain tumour

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 A nanocarrier engineered to be small enough to get past the blood-brain barrier could be targeted to deliver a chemotherapeutic drug more efficiently to tumour cells in the brain, a new study reveals.

The blood-brain barrier is a protective barrier designed to keep a stable environment within and surrounding the brain. In experiments, the researchers found that the new method resulted in increased killing in the targeted cells.

"I was very surprised by how efficiently and well it worked once we got the nanocarrier to those cells," said Ann-Marie Broome from Medical University of South Carolina in the US.

The findings potentially point the way to a new treatment option for patients with certain conditions, such as glioblastoma multiforme (GBM), the focus of this study. 


 Glioblastoma multiforme is a devastating disease with no curative options due to several challenges, Broome said.
The brain tumour has a significant overall mortality, in part due to its location, difficulty of surgical treatment and the inability to get drugs through the blood-brain barrier.

In 40 percent of cases, standard treatments will extend life expectancy four to seven months. 


 That led the researchers engineer a micelle that is a phospholipid nanocarrier, "a bit of fat globule," to deliver a concentrated dose of the chemotherapy drug temozolomide (TMZ) to the deadly tumour cells.


"Micelles of a certain size will cross the blood-brain barrier carrying a concentrated amount of TMZ," Broome explained about how the nanotechnology works.

The study was published online in the international journal Nanomedicine - Future Medicine.

In medicine, Broome said, researchers construct nanocarriers that are stable and stealthy. "Your immune cells can't attack them. They remain hidden.

"When the package gets to where it's going, nanotechnologists have various methods to get the micelles to release their payloads -- one way is to use the acidic nature of a rapidly growing tumour," she said.

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