Results 71 to 80 of about 5,434,917 (296)

H3 histamine receptor-mediated activation of protein kinase calpha inhibits the growth of cholangiocarcinoma in vitro and in vivo [PDF]

open access: yes, 2009
Histamine regulates functions via four receptors (HRH1, HRH2, HRH3, and HRH4). The D-myo-inositol 1,4,5-trisphosphate (IP(3))/Ca(2+)/protein kinase C (PKC)/mitogen-activated protein kinase pathway regulates cholangiocarcinoma growth.
A. Vetuschi   +13 more
core   +1 more source

Optical Recording of Action Potentials in Human Induced Pluripotent Stem Cell-Derived Cardiac Single Cells and Monolayers Generated from Long QT Syndrome Type 1 Patients

open access: yesStem Cells International, 2019
Induced pluripotent stem cells (iPSCs) from type 1 long QT (LQT1) patients can differentiate into cardiomyocytes (CMs) including ventricular cells to recapitulate the disease phenotype. Although optical recordings using membrane potential dyes to monitor
Tadashi Takaki   +8 more
doaj   +1 more source

Characterization and reduction of non-endocrine cells accompanying islet-like endocrine cells differentiated from human iPSC

open access: yesScientific Reports, 2022
The differentiation of pancreatic endocrine cells from human pluripotent stem cells has been thoroughly investigated for their application in cell therapy against diabetes.
Hideyuki Hiyoshi   +10 more
doaj   +1 more source

Photosynthesis under far‐red light—evolutionary adaptations and bioengineering of light‐harvesting complexes

open access: yesFEBS Letters, EarlyView.
Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii   +8 more
wiley   +1 more source

Control of cell division in the adult brain by heparan sulfates in fractones and vascular basement membranes [PDF]

open access: yes, 2010
Regulation of cell division in adult tissues and organs requires the coordination of growth factors at the surface of potentially-dividing cells in specific anatomic loci named germinal niches.
Frederic Mercier, Vanessa Douet
core   +1 more source

Multiple feedback loops through cytokinin signaling control stem cell number within the Arabidopsis shoot meristem [PDF]

open access: yes, 2009
A central unanswered question in stem cell biology, both in plants and in animals, is how the spatial organization of stem cell niches are maintained as cells move through them.
Anders   +33 more
core   +2 more sources

Hepatocellular Carcinomas Originate Predominantly from Hepatocytes and Benign Lesions from Hepatic Progenitor Cells

open access: yesCell Reports, 2017
Summary: Hepatocellular carcinoma (HCC) is an aggressive primary liver cancer. However, its origin remains a debated question. Using human data and various hepatocarcinogenesis mouse models, we show that, in early stages, transformed hepatocytes ...
Krishna S. Tummala   +6 more
doaj   +1 more source

Positioning of nucleosomes containing γ-H2AX precedes active DNA demethylation and transcription initiation

open access: yesNature Communications, 2021
The order of DNA methylation and histone modifications during transcription remained unclear. Here the authors show that HMGA2 induces DNA nicks at TGFB1-responsive genes, promoting nucleosome incorporation containing γ-H2AX, which is required for repair-
Stephanie Dobersch   +21 more
doaj   +1 more source

The cell-cell channel in the control of growth

open access: yesSeminars in Cell Biology, 1992
Several lines of evidence indicate that the cell-cell channels in gap junction are conduits for growth-regulating signals. Experimental upregulation of the channels by retinoids causes inhibition of cellular growth and, conversely, their downregulation by oncogenes, e.g. activated src, stimulates growth.
W R, Loewenstein, B, Rose
openaire   +2 more sources

Rad27/FEN1 prevents accumulation of Okazaki fragments and ribosomal DNA copy number changes

open access: yesFEBS Letters, EarlyView.
The budding yeast Rad27 is a structure‐specific endonuclease. Here, the authors reveal that Rad27 is crucial for maintaining the stability of the ribosomal RNA gene (rDNA) region. Rad27 deficiency leads to the accumulation of Okazaki fragments and changes in rDNA copy number.
Tsugumi Yamaji   +3 more
wiley   +1 more source

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