«It was really surprizing to realize that oncogenic Pik3ca in basal cells induced the formation of luminal tumours, while its expression in luminal cells gave rise to heterogeneous and more
aggressive tumors including basal - like tumors,» comments Alexandra Van Keymeulen, the first author of the paper.
Not exact matches
«Our results show that a diet oriented towards the prevention of
aggressive tumors in the prostate should probably
include important elements of the Mediterranean diet such as fish, legumes, and olive oil, and suggest that a high intake of fruits, vegetables, and whole grains might not be enough.»
They found
aggressive breast
tumors,
including those that show metastatic traits, expressed higher levels of hnRNPM.
The team chose to compare breast tissue from healthy individuals with
tumor samples taken from breast cancer patients —
including both primary
tumors that had not spread from the breast to other body sites, and highly
aggressive, metastatic
tumors.
The researchers are now further investigating the possibility of using this approach on other cancers,
including prostate cancer, where it could be used to distinguish more
aggressive tumors from those that grow much more slowly, Bhatia says.
The study's findings, published in the journal Cancer Research, are the first to use these combined agents as an immune stimulator and may have the potential to kill cancerous cells in solid
tumors,
including some of the most
aggressive cancers that form in the lung and pancreas.
«BMI1 plays a substantial role in many solid
tumors,
including one of the most
aggressive models of lung cancer, and its expression is linked with
tumor growth, invasion, metastasis, prognosis and recurrence,» Levantini said.
Improving the understanding of these genetic changes in these diseases, can point to new directions for diagnosis and treatment,
including a way to potentially differentiate
aggressive tumors from those that are not life threatening.
But the other
tumor types may require more
aggressive measures to prevent relapse,
including chemotherapy and sometimes investigational drugs.
«What we see over and over in trying to treat some of the most
aggressive and intractable cancers,
including many lung, brain, ovarian, breast, melanoma and sarcoma
tumors, is that the
tumor fights back.
Mutations in the beta - catenin gene, or flaws in the factors that degrade it, have long been linked to more
aggressive disease in various
tumor types,
including colon, lung and prostate cancer, and melanoma.
Since completing the initial paper published Thursday, the team has analyzed 50 more samples from eye fluid of retinoblastoma patients,
including those with less
aggressive tumors whose eyes were saved, to get a start on determining what factors might be at play in
tumor progression.
Also, PSA tests can detect small prostate cancers,
including some very slow - growing
tumors that are unlikely to be life - threatening and may not add any relevant information about
aggressive prostate
tumors that are already spreading.