Results 71 to 80 of about 194,146 (309)

The presence of a FLT3 internal tandem duplication in patients with acute myeloid leukemia (AML) adds important prognostic information to cytogenetic risk group and response to the first cycle of chemotherapy: analysis of 854 patients from the United Kingdom Medical Research Council AML 10 and 12 trials [PDF]

open access: yes, 2001
In acute myeloid leukemia (AML), further prognostic determinants are required in addition to cytogenetics to predict patients at increased risk of relapse.
Anthony H. Goldstone   +45 more
core   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

The divergence of alternative splicing between ohnologs in teleost fishes

open access: yesBMC Ecology and Evolution, 2021
Background Gene duplication and alternative splicing (AS) are two distinct mechanisms generating new materials for genetic innovations. The evolutionary link between gene duplication and AS is still controversial, due to utilizing duplicates from ...
Yuwei Wang, Baocheng Guo
doaj   +1 more source

Mechanisms of gene expression evolution in polyploids [PDF]

open access: yes, 2008
textPolyploidy, or whole genome duplication (WGD), is a fundamental evolutionary mechanism for diverse organisms including many plants and some animals. Duplicate genes from WGD are a major source of expression and functional diversity.
Ha, Misook
core   +1 more source

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

open access: yesMolecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla   +9 more
wiley   +1 more source

Evolution signatures in genome network properties [PDF]

open access: yes, 2011
Genomes maybe organized as networks where protein-protein association plays the role of network links. The resulting networks are far from being random and their topological properties are a consequence of the underlying mechanisms for genome evolution ...
Rodrigo Dalmolin   +6 more
core   +1 more source

Divergent roles of CprK paralogues from Desulfitobacterium hafniense in activating gene expression [PDF]

open access: yes, 2008
Gene duplication and horizontal gene transfer play an important role in the evolution of prokaryotic genomes. We have investigated the role of three CprK paralogues from the cAMP receptor protein-fumarate and nitrate reduction regulator (CRP-FNR) family ...
Vos, W.M., de   +4 more
core   +1 more source

Phylogenomics of MADS-Box Genes in Plants — Two Opposing Life Styles in One Gene Family

open access: yesBiology, 2013
The development of multicellular eukaryotes, according to their body plan, is often directed by members of multigene families that encode transcription factors.
Lydia Gramzow, Günter Theißen
doaj   +1 more source

GENE DUPLICATION AND PHYLOGENY IN CLARKIA [PDF]

open access: yesEvolution, 1979
Direct evidence for the descent of a group of species from a single common ancestor is rarely possible in the absence of fossils. Consequently, phylogenetic taxonomy relies on comparative analysis of morphological, chromosomal, and biochemical characters for evidence of relationship.
L D, Gottlieb, N F, Weeden
openaire   +2 more sources

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