Results 51 to 60 of about 291,851 (290)
Molecular Oncology, EarlyView.Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee +8 more
wiley +1 more source
The scenario on the origin of translation in the RNA world: in principle of replication parsimony
Biology Direct, 2010 Background It is now believed that in the origin of life, proteins should have been "invented" in an RNA world. However, due to the complexity of a possible RNA-based proto-translation system, this evolving process seems quite complicated and the ...
Ma Wentao
doaj +1 more source
Primordial RNA Replication and Applications in PCR Technology [PDF]
, 2013 The emergence of self-replication and information transmission in life's origin remains unexplained despite extensive research on the topic. A hypothesis explaining the transition from a simple organic world to a complex RNA world is offered here based ...
Palasek, Stan
core
Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment
Molecular Oncology, EarlyView.This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley +1 more source
The RNA-DNA world and the emergence of DNA-encoded heritable traits
RNA BiologyThe RNA world hypothesis confers a central role to RNA molecules in information encoding and catalysis. Even though evidence in support of this hypothesis has accumulated from both experiments and computational modelling, the transition from an RNA world
Suvam Roy, Supratim Sengupta
doaj +1 more source
RNA Catalysis, Thermodynamics and the Origin of Life
Life, 2014 The RNA World Hypothesis posits that the first self-replicating molecules were RNAs. RNA self-replicases are, in general, assumed to have employed nucleotide 5ʹ-polyphosphates (or their analogues) as substrates for RNA polymerization.
William G. Scott +4 more
doaj +1 more source
Identification of the prebiotic translation apparatus within the contemporary ribosome [PDF]
, 2009 A structural element that could have existed independently in the prebiotic era was identified at the active site of the contemporary ribosome. It is suggested to have functioned as a proto-ribosome catalyzing peptide bond formation and non-coded ...
Ada Yonath +3 more
core +1 more source
Molecular Oncology, EarlyView.Meta‐transcriptome analysis identified FGF19 as a peptide enteroendocrine hormone associated with colorectal cancer prognosis. In vivo xenograft models showed release of FGF19 into the blood at levels that correlated with tumor volumes. Tumoral‐FGF19 altered murine liver metabolism through FGFR4, thereby reducing bile acid synthesis and increasing ...
Jordan M. Beardsley +5 more
wiley +1 more source
Key steps from the “RNA World” to the “DNA World”
BIO Web of Conferences, 2014 In the « RNA World » hypothesis of the origin of life, RNAs are assumed to be the central macromolecules able to self-replicate, conserve information and catalyze the reactions necessary for a primitive metabolism and many enzymatic cofactors may be ...
Renard B.-L. +3 more
doaj +1 more source
Biology Direct, 2010 Background Understanding the origin of protein synthesis has been notoriously difficult. We have taken as a starting premise Wolf and Koonin's view that "evolution of the translation system is envisaged to occur in a compartmentalized ensemble of ...
Tate Warren, Bernhardt Harold
doaj +1 more source