TUM scientists develop molecules that could pave way for new treatments to fight Alzheimer's, diabetes

When proteins change their structure and clump together, formation of amyloid fibrils and plaques may occur. Such 'misfolding' and 'protein aggregation' processes damage cells and cause diseases such as Alzheimer's and type 2 diabetes. A team of scientists from the Technical University of Munich (TUM) headed by Professor Aphrodite Kapurniotu have now developed molecules that suppress protein aggregation and could pave the way for new treatments to combat Alzheimer's, type 2 diabetes and other cell-degenerative diseases.

The scientists designed and studied 16 different peptide molecules in order to find out which of them are able to impede the 'clumping' of the proteins amyloid beta (Aß) and islet amyloid polypeptide (IAPP), which are associated with Alzheimer's and type 2 diabetes.

The molecules were designed on the basis of scientific work that shows that the Aß and IAPP proteins interact with each other, and that this 'cross-amyloid interaction' suppresses their clumping. The researchers selected short sequences of the IAPP protein that correspond to the key regions involved in the interaction with the Alzheimer's protein. These "hot segments" were then chemically linked to each other by using specific peptide segments as 'linkers' in order to mimic and optimize the IAPP cross-amyloid interaction surface.

Ref : http://www.tum.de/en/about-tum/news/press-releases/short/article/32611/

TUM scientists develop molecules that could pave way for new treatments to fight Alzheimer's, diabetes

SMC approves Bayer's Xofigo for treatment of castration-resistant prostate cancer in NHS Scotland

The Scottish Medicines Consortium (SMC) has today announced that Xofigo® (radium-223 dichloride) has been accepted for use within NHS Scotland for the treatment of adult patients with castration-resistant prostate cancer (CRPC), symptomatic bone metastases and no known visceral metastases.

While the National Institute for Health and Care Excellence (NICE) has published draft guidance recommending radium-223 dichloride in advanced prostate cancer, this does not cover all patients and may not be confirmed for a number of months and could change. In Scotland, under SMC guidance clinicians will have the choice to use Xofigo prior to chemotherapy or after. So while patient access has improved in Scotland, it is worsening in the rest of the UK.

“This is a positive step for advanced prostate cancer patients in Scotland. However, the picture in England, Wales and Northern Ireland is very different. Historically radium-223 dichloride has been available only in England, funded through the Cancer Drugs Fund (CDF). This CDF funding is due to cease later this year following the recent CDF delisting round,” said Mr Hugh Gunn, Tackle Prostate Cancer. “If NICE pass radium-223 dichloride for use, this will be for post chemotherapy patients only. This will prevent the use of radium-223 dichloride in men who, for one reason or another do not progress to chemotherapy.”

SMC approves Bayer's Xofigo for treatment of castration-resistant prostate cancer in NHS Scotland

Patients with advanced kidney cancer benefit from cabozantinib treatment

In continuation of my update on cabozantinib

Patients with advanced kidney cancer live for nearly twice as long without their disease progressing if they are treated with cabozantinib, a drug that inhibits the action of tyrosine kinases - enzymes that function as an "on" or "off" switch in many cellular processes, including cancer.

In the second of two late-breaking presentations of research that is predicted to change the way kidney cancer patients are treated, Professor Toni Choueiri will tell the presidential session of the 2015 European Cancer Congress, about results from the first 375 patients out of a total of 658 patients recruited to the phase III clinical METEOR trial comparing cabozantinib with everolimus, the current standard treatment for the disease.

Analysis of results in July 2015 showed that the estimated median (average) progression-free survival time for patients with advanced clear cell kidney cancer, randomised to receive cabozantinib, was 7.4 months, while it was 3.8 months for those receiving everolimus. The objective response rate (the proportion of patients whose tumours shrank, assessed up to 17 months) was 21% for cabozantinib and 5% for everolimus.

An interim analysis of overall survival among all of the 658 patients found that it was a third better for patients receiving cabozantinib. The findings are published simultaneously with the ECC2015 presentation in the New England Journal of Medicine.

Prof Choueiri, who is Associate Professor of Medicine at Harvard Medical School and Clinical Director and Kidney Cancer Center Director at The Lank Center for Genitourinary Oncology, Dana-Farber Cancer Institute, USA, said: "I am very excited about the outcome of the study since the results may change the standard of care in patients with advanced kidney cancer who have received prior standard therapy that targets the vascular endothelial growth factor receptor (VEGFR).

"Although treatment with VEGFR-targeted drugs has been very effective in the first line of therapy for patients with advanced kidney cancer, in many cases tumour cells find ways to escape control by these drugs. Cabozantinib is a new drug that targets possible escape mechanisms of tumour cells, including the tyrosine kinases MET, VEGFR and AXL. The results of the METEOR trial indicate that cabozantinib is able to shrink tumours and slow down tumour growth much better than current standard treatment in patients who previously received VEGFR-targeted drugs. This has resulted in a significant reduction in the rate of disease progression or death in the cabozantinib arm as compared with the everolimus arm. Regaining tumour control after prior targeted therapy may reduce symptoms related to kidney cancer and eventually help patients live longer.

Patients with advanced kidney cancer benefit from cabozantinib treatment

Dried plum diet may help reduce colon cancer risk

Researchers from Texas A&M University and the University of North Carolina have shown a diet containing dried plums can positively affect microbiota, also referred to as gut bacteria, throughout the colon, helping reduce the risk of colon cancer.

The research was funded by the California Dried Plum Board and presented at the 2015 Experimental Biology conference in Boston.

"Through our research, we were able to show that dried plums promote retention of beneficial bacteria throughout the colon, and by doing so they may reduce the risk of colon cancer," said Dr. Nancy Turner, Texas A&M AgriLife Research professor in the nutrition and food science department of Texas A&M University, College Station.

According to the American Cancer Society, colon cancer is the third leading cause of cancer-related deaths in the U.S. when men and women are considered separately, and the second-leading cause when the figures are combined. During 2015, colon cancer is expected to cause about 49,700 deaths nationwide.

A good amount of research has already shown that one's diet can alter the metabolism and composition of colon microbiota, which has major implications for disease prevention and treatment, Turner said.

She said there are trillions of bacteria in the intestinal tract and so far more than 400 individual species have been identified. Previous research has shown that disruptions to the microbiota are involved in the initiation of intestinal inflammation and recurrence of inflammatory bouts that can promote development of colon cancer.

"Our research explored the potential cancer-protective properties of dried plums using a well-established rat model of colon cancer," she said. "Dried plums contain phenolic compounds, which have multiple effects on our health, including their ability to serve as antioxidants that can neutralize the oxidant effect of free radicals that can damage our DNA.

"The hypothesis we tested in this experiment was that consumption of dried plums would promote retention of beneficial microbiota and patterns of microbial metabolism throughout the colon. If it did this, then it might also help reduce the risk of colon cancer."

Dried plum diet may help reduce colon cancer risk

The Nobel Prize in Chemistry 2015

The cells’ toolbox for DNA repair

The Nobel Prize in Chemistry 2015 is awarded to Tomas Lindahl, Paul Modrich and Aziz Sancar for having mapped, at a molecular level, how cells repair damaged DNA and safeguard the genetic information. Their work has provided fundamental knowledge of how a living cell functions and is, for instance, used for the development of new cancer treatments.

Each day our DNA is damaged by UV radiation, free radicals and other carcinogenic substances, but even without such external attacks, a DNA molecule is inherently unstable. Thousands of spontaneous changes to a cell’s genome occur on a daily basis. Furthermore, defects can also arise when DNA is copied during cell division, a process that occurs several million times every day in the human body.

The reason our genetic material does not disintegrate into complete chemical chaos is that a host of molecular systems continuously monitor and repair DNA. The Nobel Prize in Chemistry 2015 awards three pioneering scientists who have mapped how several of these repair systems function at a detailed molecular level.

In the early 1970s, scientists believed that DNA was an extremely stable molecule, but Tomas Lindahl demonstrated that DNA decays at a rate that ought to have made the development of life on Earth impossible. This insight led him to discover a molecular machinery, base excision repair, which constantly counteracts the collapse of our DNA.

Aziz Sancar has mapped nucleotide excision repair, the mechanism that cells use to repair UV damage to DNA. People born with defects in this repair system will develop skin cancer if they are exposed to sunlight. The cell also utilises nucleotide excision repair to correct defects caused by mutagenic substances, among other things.

Paul Modrich has demonstrated how the cell corrects errors that occur when DNA is replicated during cell division. This mechanism, mismatch repair, reduces the error frequency during DNA replication by about a thousandfold. Congenital defects in mismatch repair are known, for example, to cause a hereditary variant of colon cancer.

The Nobel Laureates in Chemistry 2015 have provided fundamental insights into how cells function, knowledge that can be used, for instance, in the development of new cancer treatments.

The Nobel Prize in Chemistry 2015

S1 Biopharma supports FDA's approval of flibanserin for women living with HSDD

Approval of flibanserin by the U.S. Food and Drug Administration (FDA) was a significant advancement for women's health, addressing the important unmet medical need for women living with HSDD. The condition is marked by a lack of sexual thoughts and desire for sexual activity that cannot be accounted for by another medical, physical, psychiatric, or medication-induced condition. An estimated one in 10 women may have HSDD at some point in their life, for which therapies like flibanserin and Lorexys, S1 Biopharma's next-generation first in class drug, are being developed to address.

We are pleased for Dr. Robert Pyke, who before joining S1 Biopharma as Chief Medical Officer in 2012 to develop Lorexys, had fathered flibanserin at Boehringer Ingelheim before it was acquired by Sprout Pharmaceuticals.

S1 Biopharma, Inc. is continuing the development of Lorexys, a unique multi-receptor oral tablet being studied for the treatment of HSDD in pre-menopausal women. Lorexys will provide first-line treatment for women suffering from HSDD as an easy to administer daily pill.

S1 Biopharma supports FDA's approval of flibanserin for women living with HSDD

STA inks license and commercialisation agreement with PharmaMar for APLIDIN (plitidepsin)

Australian biopharmaceutical company Specialised Therapeutics Australia has struck an exclusive license and commercialisation agreement with European pharmaceutical partner company PharmaMar to market and distribute the novel oncology drug APLIDIN® (plitidepsin) in Australia and New Zealand.

Under the terms of the agreement, PharmaMar will receive an upfront payment, royalties and additional remunerations for regulatory and sales milestones achieved by APLIDIN® (plitidepsin).

PharmaMar will retain production rights and will supply the finished product to STA for exclusive commercial use in Australia and New Zealand.

APLIDIN® (plitidepsin) is PharmaMar´s second anticancer drug candidate obtained from a marine organism. This first in class drug is currently in development for the treatment of multiple myeloma and a type of T cell lymphoma. The company announced in June that patient recruitment of the international pivotal Phase III trial (ADMYRE) for APLIDIN® (plitidepsin) in refractory/relapsed multiple myeloma was successfully completed.

STA inks license and commercialisation agreement with PharmaMar for APLIDIN (plitidepsin)

AbbVie's venetoclax Phase 2 trial meets primary endpoint in patients with relapsed/refractory CLL with 17P deletion

 

AbbVie (NYSE: ABBV), a global biopharmaceutical company, announced that a Phase 2 trial of its investigational medicine
venetoclax met its primary endpoint of achieving overall response ratesin patients with relapsed/refractory or previously untreated chroniclymphocytic leukemia (CLL) with 17p deletion, according to anindependent review analysis. The open-label study evaluated the efficacy and safety of venetoclax, an inhibitor of the B-cell lymphoma-2 (BCL-2)
protein that is being developed in partnership with Genentech and Roche.

Data from this study will be presented at an upcoming medical conference and will serve as the pivotal registration data forapplications to the FDA, EMA and other health authorities. The safety profile was similar to previous studies and no unexpected safety signals were reported for venetoclax.

AbbVie's venetoclax Phase 2 trial meets primary endpoint in patients with relapsed/refractory CLL with 17P deletion

Envarsus XR granted FDA orphan drug designation for prophylaxis of organ rejection in kidney transplant patients

Veloxis Pharmaceuticals A/S (OMX: VELO), today announced that Envarsus^® XR was     granted Orphan Drug status by the U.S. Food and Drug Administration(FDA) for prophylaxis of organ rejection in patients who convert fromimmediate-release tacrolimus. Envarsus^® XR received marketing authorization from the FDA on July 10, 2015.

"We view Orphan Drug status as the FDA's recognition of thedifferentiated profile and the unique 'switch' indication of Envarsus^® XR compared  to  other               tacrolimus products," said William Polvino, M.D.,
president and chief executive officer of Veloxis. "We now look forwardto making Envarsus^® XR available to conversion patients by the end of 2015."

Orphan drug designation is designed is to encourage the developmentof drugs that may provide significant benefit to patients suffering from rare diseases. The designation is granted by the FDA upon recognition
that the prevalence of the U.S. target patient population is 200,000patients or less. Orphan drug designation entitles Veloxis to a waiver of the FDA prescription drug user fees for Envarsus^® XR aswell as for potential tax incentives. Additionally, U.S. dataexclusivity protection may be extended for up to seven years.

 

Envarsus XR granted FDA orphan drug designation for prophylaxis of organ rejection in kidney transplant patients

AbbVie's venetoclax Phase 2 trial meets primary endpoint in patients with relapsed/refractory CLL with 17P deletion

Venetoclax, also known as ABT-199 or GDC0199, is an orally bioavailable, selective small molecule inhibitor of the anti-apoptotic protein Bcl-2, with potential antineoplastic activity. Venetoclax mimics BH3-only proteins, the native ligands of Bcl-2 and apoptosis activators, by binding to the hydrophobic groove of Bcl-2 proteins thereby repressing Bcl-2 activity and restoring apoptotic processes in tumor cells. Bcl-2 protein is overexpressed in some cancers and plays an important role in the regulation of apoptosis; its expression is associated with increased drug resistance and tumor cell survival. Compared to the Bcl-2 inhibitor navitoclax, this agent does not inhibit bcl-XL and does not cause bcl-XL-mediated thrombocytopenia....

AbbVie (NYSE: ABBV), a global biopharmaceutical company,  announced that a Phase 2 trial of its investigational medicine venetoclax met its primary endpoint of achieving overall response rates in patients with relapsed/refractory or previously untreated chronic lymphocytic leukemia (CLL) with 17p deletion, according to an independent review analysis. The open-label study evaluated the efficacy and safety of venetoclax, an inhibitor of the B-cell lymphoma-2 (BCL-2) protein that is being developed in partnership with Genentech and Roche.

Data from this study will be presented at an upcoming medical conference and will serve as the pivotal registration data for applications to the FDA, EMA and other health authorities. The safety profile was similar to previous studies and no unexpected safety signals were reported for venetoclax.

AbbVie's venetoclax Phase 2 trial meets primary endpoint in patients with relapsed/refractory CLL with 17P deletion