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C/EBPβ is an important regulator of oncogene-induced senescence (OIS). Here we show that C/EBPγ, a heterodimeric partner of C/EBPβ whose biological functions are not well understood, inhibits cellular senescence. Cebpg-/- MEFs proliferated poorly, entered senescence prematurely, and expressed a p...
ORGANISM(S): Mus musculus 
C/EBPb is an auto-repressed protein that becomes posttranslationally activated by Ras-MEK-ERK signalling. C/EBPb is required for oncogene-induced senescence (OIS) of primary fibroblasts, but also displays pro-oncogenic functions in many tumour cells. Here, we show that C/EBPb activation by H-RasV12 ...
ORGANISM(S): Mus musculus 
Many bacteria colonize surfaces and transition to a sessile mode of growth. The plant pathogen Agrobacterium tumefaciens produces a unipolar polysaccharide (UPP) adhesin at single cell poles that contact surfaces. Here we report that elevated levels of the intracellular signal cyclic diguanosine mon...
ORGANISM(S): Agrobacterium tumefaciens 
Isoprene is a well-studied volatile hemiterpene that protects plants from abiotic stress through mechanisms that are not fully understood. The antioxidant and membrane stabilizing potential of isoprene are the two most commonly invoked mechanisms. However, isoprene also affects phenylpropanoid metab...
ORGANISM(S): Arabidopsis thaliana 
Metastatic melanoma is an aggressive treatment-refractory malignancy. Recently, c-Kit mutations were discovered in certain mucosal melanomas. A clinical trial was initiated with the c-Kit inhibitor imatinib mesylate. The first treated patient experienced dramatic clinical improvement within days, f...
ORGANISM(S): Homo sapiens 
Lambs that inherit a callipyge allele from their dam have an up-regulation of maternally imprinted transcripts near the callipyge mutation but do not exhibit muscle hypertrophy. It is not clear what effects these maternally expressed transcripts have in the muscle or how the inheritance of a materna...
ORGANISM(S): Ovis aries 
Although the accumulation of neutrophils in the lungs and airways is common to many inflammatory lung diseases, including acute lung injury, the alterations that neutrophils undergo as they leave the peripheral circulation and migrate into the lungs have not been well characterized. Human volunteers...
ORGANISM(S): Homo sapiens 
The bromodomain and extraterminal (BET) protein Brd4 is a validated drug target in leukemia, yet its regulatory function in this disease is not well understood. Here, we show that Brd4 chromatin occupancy in acute myeloid leukemia closely correlates with the hematopoietic transcription factors (TFs)...
ORGANISM(S): Mus musculus 
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