Tag Archives: apoptosis

VB-111, A Novel Gene Therapeutic Agent in Cancer- Ashini R. Dias, Contributor

The formation of new blood vessels or angiogenesis is a normal process required for growth and wound healing. Unfortunately, it also plays a critically enabling role in the growth, proliferation, invasion and metastasis of cancers since tumors cannot grow beyond a certain size without a blood supply. The resulting new blood vessels feed the growing tumors with necessary oxygen and nutrients, allowing the cancer cells to invade nearby tissue, and gain access to immature blood vessels to metastasize throughout the body. Platelet Derived Growth Factor (PDGF), which is secreted by carcinoma cells, is the most important signaling molecule to stimulate and proliferate stromal cells. Myofibroblasts, transdifferentiated from stromal fibroblasts by PDGF, secretes chemokines that recruit endothelial precursor cells (EPC) in to the stroma. Myofibroblasts also secrete vascular endothelial growth factor (VEGF), which induces the differentiation of EPCs into endothelial cells, subsequently forming the neo-vasculature. Continue reading

CDKN2A Mutation Shortens Survival in Melanoma Patients

Individuals that carry mutations to the CDKN2A tumor suppressor gene have 65-fold increased risk of developing melanoma and a lifetime penetrance of melanoma of 60-90%. In a new study by researchers from the Karolinska University Hospital in Sweden, individuals who had inherited CDKN2A mutations were on average 10 years younger at their melanoma diagnosis than the non-mutated familial melanoma cases. Continue reading

SOR-C13 and Psaptides for Ovarian Cancer

The U.S. Food and Drug Administration (FDA) has granted orphan-drug designation to peptide SOR-C13 (Sorcimed) for the treatment of ovarian cancer. Additionally, two forms of a peptide derived from a naturally-occurring human protein (Psaptides) can force tumors to shrink significantly in an animal model of metastatic ovarian cancerContinue reading

Vanquish Oncology – Procaspase 3 Activation Factor to Selectively Induce Apoptosis

Procaspase-3 is an executioner protein catalyzes the hydrolysis of more than 100 protein targets. These cleavage events ultimately lead to cell suicide, or apoptosis. Caspase-3 is triggered by the intrinsic and extrinsic apoptosis cascades. Continue reading

Priority Review for Potent Novel Therapy for Chronic Lymphocytic Leukemia (CLL)

Venetoclax is a novel cancer therapy being developed by Roche and AbbVie. The U.S. FDA has accepted the New Drug Application and granted Priority Review and Breakthrough Therapy Designation for venetoclax for the treatment of people with chronic lymphocytic leukemia (CLL) who have received at least one prior therapy, including those with 17p deletion. Continue reading

Why do elephants have lower rates of cancer than humans?

Why elephants do not get cancer is a famous conundrum that was posed by epidemiologist Richard Peto of the University of Oxford, UK, in the 1970’s. Peto noted that, in general, there is little relationship between cancer rates and the body size or age of animals. Continue reading

Vectibix Extends Survival in Colon Cancer

A Phase III study in patients with chemo-refractory colorectal cancer with wild-type K-ras genotype demonstrated that Amgen’s Vectibix (panitumumab) improved overall survival compared to best supportive therapy, alone. A total of 377 patients were randomized to receive best supportive care with or without intravenous infusions of Vectibix every 14 days. Full results of the study will be presented at a future medical meeting and submitted for publication. Continue reading

What do pineapples, glucose, and cancer have in common – mitochondria

I was sent articles by two non-cancer researchers last week – they are quite fitting for discuss on this blog (thank you, Gina and Sherilyn). The first was on DCA (dichloroacetate), a drug approved for congenital lactic acidosis, and the second about bromelain, an enzyme in pineapples. Continue reading

Inhibitory RNA miR-182 Can Turn-Off Glioblastoma

Researchers examined large-scale genomic datasets and found that patients with higher levels of miR-182 had a better chance of surviving glioblastoma (GBM) longer. This prompted them to perform pre-clinical studies to elucidate the mechanism by which miR-182 acts. Continue reading