The team is currently working on genome sequencing of individual circulating
tumour cells from patients at the Vancouver Prostate Centre.
By blocking of an enzyme that affects the cellular microenvironment it is possible to stop brain
tumour cells from growing.
One method is to remove
some tumour cells from the patient at the time of surgery, insert a gene for an immune - stimulating protein into them, and return them to the body.
Geneva, Switzerland, 26 March 2014 — A new era of lung cancer therapy is close to dawning, using drugs that can prevent
tumour cells from evading the immune system, experts have said at the 4th European Lung Cancer Congress.
Initially, the Geneva researchers observed the vascularisation processes of human
tumour cells from different cell lines.
A new era of lung cancer therapy is close to dawning, using drugs that can prevent
tumour cells from evading the immune system, experts have said at the 4th European Lung Cancer Congress.
To carry out the study, the team has analysed how different carbohydrates act on the surface of silver nanoparticles (Ag - NP) of around 50 nanometres, which have been introduced into cultures of liver cells and
tumour cells from the nervous system of mice.
For the first time ever, we could make a really comprehensive comparison of individual normal and
tumour cells from the exact same type of tissue, taken at the same time, from the same person, and see how the cancer had developed.»
Anne Goriely of the University of Oxford and her colleagues took
tumour cells from men with benign testicular tumours and looked for specific mutations in the FGFR3 and HRAS genes.
«With this breakthrough it is possible to generate cell models with the same alterations as observed in
tumour cells from patients, which will allow us to study their role in tumour development,» says CNIO researcher Sandra Rodríguez - Perales.
Not exact matches
Injections of killed stem
cells, designed to help the immune system recognise cancers, have been found to protect mice
from developing
tumours
Because such
cells are derived
from adult
cells, not pluripotent
cells — which have the potential to form a kind of
tumour called a teratoma — they might be safer than iPS
cells.
They found 60 per cent fewer blood vessels surrounding
tumour - like tissue grown
from Down's stem
cells than those
from other volunteers.
«Myeloid - derived suppressor
cells (MDSCs) produce reactive nitrogen radicals that alter the receptors on the surface of the
tumour to hide it
from cytotoxic lymphocytes that kill
tumour cells.
That drug stops the
tumour from reprogramming immune
cells.
These were released into
tumour cells that had been taken
from glioblastoma patients and grown in the lab.
He suggests, instead, that the team take T
cells from the site of the
tumour, because they would already be specialized for attacking cancer.
The real test will be to inject these
cells into mice and see if they form teratomas —
tumours containing tissue or structures derived
from all three germ layers.
Like a cruel form of mind control, some cancerous
tumours can reprogram some immune
cells to «block» other immune
cells from attacking, leaving the
tumour free to grow.
Devil Facial
Tumour Disease (DFTD) is a rare contagious facial tumour, which emerged from a neural (Schwann) cell in a single Tasmanian devil more than 18 year
Tumour Disease (DFTD) is a rare contagious facial
tumour, which emerged from a neural (Schwann) cell in a single Tasmanian devil more than 18 year
tumour, which emerged
from a neural (Schwann)
cell in a single Tasmanian devil more than 18 years ago.
High levels of the protein were also found in cultures of metastatic
cells from tumours of the colon, breast, head and neck.
A DEVICE that filters cancer
cells from human blood using sound could help to identify
tumour cells that have spread.
We are looking for the proteins that make the
tumour cells different to the host devils that they infect and then use these «
tumour specific» proteins to design a vaccine that will save the devil
from extinction.
The researchers hope that ultimately human trials will prove the efficacy of the OH14 compound in sensitising
tumour cells and cancer stem
cells to existing drug - based therapies thus disabling
tumours from seeding new growth after treatment.
But studies
from recent years suggest that
tumours harbour drug - resistant
cells long before they encounter therapy.
«In most cases we think the body's growth control mechanisms eventually stop the
cells from proliferating further, but in occasional cases where additional mutations occur in the clump of
cells, a
tumour will eventually develop,» says Andrew Wilkie also of the University of Oxford, who supervised the work.
This is important as one of the reasons
tumour cells are so pernicious is that they are able to hide
from the body's immune system, by hijacking macrophages.
Cell lines
from human
tumours did exist, but were considered unsafe: what if cancerous
cells were transferred along with the vaccine?
Ironically, TRAIL normally delivers a signal for
cells to die, but the Trinity scientists found that this molecule can also send a wound - healing message
from tumour cells.
These
cells pick up antigens
from tumour cells and «introduce» them to T
cells in the lymph nodes, spurring them into action against the
tumour.
«Although relatively rare, childhood germ
cell tumours need to be diagnosed accurately and followed up carefully to give us the best chances of treating them,» says Professor Nick Coleman
from the Department of Pathology, University of Cambridge.
The time needed for breast cancer metastases (secondary lesions caused by
cells that have escaped
from the original
tumour) to develop varies between patients, and little is known about the mechanisms that govern latency (the dormant state of
cells that have already spread through the body).
Using an approach developed at Maisonneuve - Rosemont, consisting of an autograft to reduce
tumour mass followed by a family allograft three to four months later to clean the bone marrow of myeloma
cells with immune
cells from a family donor (immunotherapy), the study resulted in a total cure rate of 41 %, a record level using this strategy.
Growing mini
tumours in the lab
from a patient's own
cells could help doctors discover the best way to treat each person, homing in on the right drugs to use
Breast cancer researchers have mapped early genetic alterations in normal - looking
cells at various distances
from primary
tumours to show how changes along the lining of mammary ducts can lead to disease.
Dr Sophie Roerink, joint first author
from the Wellcome Sanger Institute, said: «We found mutational processes in these cancer
cells that are just not seen in normal
cells, leading to a huge increase in mutation rate for
tumours compared with normal
cells.
«Brain metastases are a secondary brain
tumour, which means they are caused by cancer
cells that escape
from primary
tumours like lung, breast or melanoma, and travel to the brain,» said Mohini Singh, the study's primary author and a PhD candidate in biochemistry at the Michael G. DeGroote School of Medicine at McMaster.
The research team with international collaborators analysed more than 100 patient samples
from ovarian and other cancer types to discover a distinct population of
cells found in some
tumours.
The team worked on tissue
from three patients with colorectal cancer, taking normal bowel stem
cells and
cells from four different areas of the
tumours.
Breast cancer
cells that spread to other parts of the body break off and leave the primary
tumour at late stages of disease development, scientists
from the Wellcome Trust Sanger Institute and their collaborators have found.
Samples of
tumours from bowel cancer patients given different doses of resveratrol showed that even lower doses can get into cancer
cells and potentially affect processes involved in
tumour growth.
To do this, they switched
from using dead
tumour cell samples to patient - derived
tumour cell lines, in which fresh samples of a person's
tumour are grafted onto mice and grown to the required volumes.
Scientists
from the Max Planck Institute for Heart and Lung Research in Bad Nauheim and Goethe University Frankfurt have now shown that
tumour cells kill specific
cells in the vascular wall.
Such secondary
tumours are formed when individual
cells break away
from the main
tumour and travel through the bloodstream to distant areas of the body.
Researchers
from the University of Portsmouth's Brain
Tumour Research Centre of Excellence have identified molecules which are responsible for metastatic lung cancer
cells binding to blood vessels in the brain.
In lab experiments, the research team used
cell lines derived
from 40 patient
tumour samples to identify that CD151 contributes to the survival of
cells of high - grade serous ovarian cancer origin.
In collaboration with Dr Gabriele Bonatz
from the Augusta clinics in Bochum (Brustzentrum), Hatt's team confirmed the existence of TRPV1 in
tumour cells in nine different samples
from patients suffering
from breast cancer.
While it is present on a number of different types of
cells in the body, it is expressed at higher levels on metastatic
tumour cells, including those which have spread
from the lung.
When cancer
cells from eg breast or lung
tumours invade the bones through metastasis, the bone tissue is degraded.
Therefore, researchers
from the CNIO's Experimental Oncology Group have focused their work on identifying a stromal
cell population that fosters
tumour growth, to later discover why they have this capacity and reverse it.