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Source : Cancer News  May 05, 2020  3 years, 6 months, 4 weeks, 2 days, 1 hour, 39 minutes ago

Cancer: Oncology Researchers Develop Effective Delivery Protocol Of Breast Cancer Drugs

Cancer: Oncology Researchers Develop Effective Delivery Protocol Of Breast Cancer Drugs
Source : Cancer News  May 05, 2020  3 years, 6 months, 4 weeks, 2 days, 1 hour, 39 minutes ago
Cancer: Oncology researchers at the University of Alberta are enhancing a breast cancer therapy by improving how the treatment is delivered.
Dr Hasan Uludag, a Professor in chemical and materials engineering, and his team have developed a chemical compound that allows them to effectively inject genetic material into cells.

University of Alberta researchers Hasan Uludag (left) and Bindu Thapa are part of
a team that developed a chemical compound that prompts cells to begin producing
a protein that has been proven to kill tumour cells. Credit: Daniel Schieman

The new developed compound, a lipopolymer, prompts the cells to begin producing a protein called tumour necrosis factor-related apoptosis-inducing ligand (TRAIL) that has been proven to kill tumour cells effectively.
The highly potent TRAIL protein has been used in treatment but led to many side-effects. The addition of the compound, which uses the positive cancer-killing aspect of the TRAIL protein, eliminates the side-effects.
Dr Uludag told Thailand Medical News, "When you have this combination of the protein and the compound, the cells are ready, they are primed for the action of this protein, so when they see TRAIL they display this high potency and they die much more easily.”
Utilizing the new delivery method, Dr Uludag, a member of the Cancer Research Institute of Northern Alberta, also addressed the issue of cell resistance in TRAIL therapy.
Despite the fact that the treatment was somewhat effective with previous delivery methods, about 10 percent of cancerous cells survived and eventually developed resistance to the treatment. With the new lipopolymer delivery method, researchers can find alternate targets within the cell and break that resistance, killing the remainder of tumour cells.
The novel delivery  approach also holds possibilities for individualized therapeutics. Common therapeutics used today are not customizable, and though things like dosage can be changed as appropriate, ultimately, if the cells resist a drug or it proves ineffective, there is no option but to completely switch the drug and try another treatment. With an approach that uses genetic materials, alterations can be made to the order of materials in the DNA strand, known as the nucleotide sequence, to target different proteins.

Dr Uludag added, "The nature of the drug stays the same, the delivery, the application stays the same, you just change the siRNA. In terms of tailoring the therapy for patients, what we are proposing is much more possible to personalize compared to conventional ways for treating cancer patients."
The researchers’ next plans in this co-delivery approach are to reproduce the studies on a larger scale and do a parallel set of studies to specifically examine whether the new therapeutic is safe, not just whether it works.
Potentially, different genetic material combinations could be used to target different types of breast cancer cells as wel l as other types of cancer.
Dr Uludag further added, "Some of the old drugs we gave up, I think, are promising and might provide us with new ways to combat cancer.”
Dr Uludag's spinoff company, RJH Biosciences, recently received a US$100,000 grant from the Bill and Melinda Gates Foundation for a related project exploring how to better deliver therapeutics to target blood cancer by developing particular delivery systems.
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