We developed and implemented such a nomenclature for the European human pluripotent stem cell registry (hPSCreg), which needs to: 1) unambiguously identify a registered cell line; 2) allow tracing of
subclones of a particular line; and 3) enable the assignment of different lines to a specific donor origin.
Thus, two
subclones of the tumor in AML35 both acquired activating mutations of IDH2 at the same residue but by different mutations.
AK - dCK -
subclone of AA cells.
Subclone of A3.01 producing low levels of RT and p24.
Subclone of A3.01, a CD4 + CEM derived human T - cell line.
Not exact matches
But tumors from patients with distant metastases to the lung and liver showed massive epigenetic changes that mapped to large, blocklike segments
of the genome, both in the distant metastases themselves and in the section, or «
subclone,»
of the primary tumors they came from.
Prof Tony Green, an author from the Wellcome Trust - MRC Stem Cell Institute and Cambridge University, said: «The SC3 tool was able to use patterns
of gene expression to distinguish, within an individual cancer,
subclones that carried different mutations.
The discovery was made by developing a mouse model
of the disease that enabled researchers to track which
of 15 genetic groups — or
subclones —
of myeloma cells spread beyond their initial site in the animals» hind legs.
By labeling the different subgroups with fluorescent dyes, researchers determined that just one
of the
subclones was responsible for the disease metastasis.
We see extensive variability in genomes among tumours
of different tissue types, among different patients within a tissue type and among
subclones within a given patient's cancer.
«No single
subclone seems to be capable
of gaining the upper hand, leading us to wonder whether
subclones might be working together in some instances.
Cancers contain genetically different subpopulations
of cells, called
subclones.
These findings reinforce many things that we already know: that mutations acquire gradually with age, that most
of the mutations in AML (and likely other tumors) are random background events not contributing to tumorigenesis, and that subsequent mutation and evolution can give rise to
subclones that ultimately determine cancer progression and response to therapy.
In all 7 cases, the results suggest a linear model
of clonal evolution, in which progression from MDS to sAML was characterized by persistence
of a single founder clone (defined by ~ 200 - 700 mutations) and the outgrowth
of at least one new
subclone which contained dozens or hundreds
of additional mutations.
Whether identifying rare
subclones missed by standard bulk sequencing, or identifying co-mutation patterns in
subclones, Tapestri Single - Cell DNA Panels can be applied across a wide number
of applications, including hematologic malignancies, solid tumor profiling, and genome editing programs.
One
of the
subclones had lurked in her bone marrow at low levels until the first round
of chemotherapy treatment wiped out the others.
It could also help in the clinic by indicating combinations
of drugs or other treatments that offer a better chance
of killing all present
subclones, either in one shot or over time.
We demonstrate that SC3 is capable
of identifying
subclones from the transcriptomes
of neoplastic cells collected from patients.
These clonal expansions can lead to several coexisting
subclones sharing subsets
of mutations.
Crude genomic DNA extracts (gDNA)
of 78 AID - negative Amrose
subclones were prepared by incubation
of cell pellets
of app.
Careful examination
of primary breast cancers often reveals multiple genomically distinct
subclones that may contain driver alterations that follow spatial patterns
of segregation.
The majority (but not all)
of the BayGenomics ES cell lines were generated from 129P2 / OlaHsd (formerly 129 / Ola) ES cell lines, predominantly the E14Tg2A.4 parental
subclone.