This makes it much easier to find out who they bind to, where they are localised, and what their levels of expression are — all in the patient
derived tumour cells.
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.
Not exact matches
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.
«However, many patients do not respond because myeloid
derived suppressor
cells (MDSCs), a type of inhibitory
cell, are present in the
tumour microenvironment.»
«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.
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.
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.
They turned to cultured
cells derived from human lung
tumours.
Directly
derived from patient
tumours without any genetic manipulation, these new products provide the assurance of primary
cells with long - term reproducibility and scalability
Although these processes are affected by many different
cell types within the
tumour stroma, macrophages and other myeloid -
derived cells are among the most important players.
Expression of oncogenic β - catenin in Sox2 + young adult pituitary stem
cells leads to formation of clusters of stem
cells and induction of
tumours resembling human adamantinomatous craniopharyngioma (ACP),
derived from Sox2 -
cells in a paracrine manner.
Within the scope of personalized medicine, this technology presents immense possibilities for testing patient -
derived multicellular
tumour spheroids / organoids (comprising cancer
cells, stromal
cells, cancer stem
cells and / or immune
cells) for disease / biomarker - oriented drug activity and profiling using single - and pair-wise standard / targeted drug combinations.