iBB
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iBB
Institute for Bioengineering and Biosciences
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Osteogenic Differentiation of Human Mesenchymal Stem Cells by the Single Action of Luminescent Polyurea Oxide Biodendrimers

Osteogenic Differentiation of Human Mesenchymal Stem Cells by the Single Action of Luminescent Polyurea Oxide Biodendrimers | iBB | Scoop.it

Polyurea oxide (PURO) biodendrimers are a class of dendrimers that can trigger osteogenic differentiation of human mesenchymal stem cells (hMSCs). The effect of PURO biodendrimers in the differentiation of hMSCs was found by the single addition to a standard growth medium for MSCs differentiation (without differentiation inducers, e.g. dexamethasone, ascorbic acid, and β-glycerophosphate). These results, published in ACS Applied Bio Materials by Rita Pires and Vasco Bonifácio from BSIRG-iBB and with colleague João Conde from NOVA Medical School, constitute the first report of in vitro osteodifferentiation fully regulated by synthetic soft polymers. The outstanding role of dendrimers in nanomedicine, under clinic translation, combined with this feature is envisaged to foster PURO dendrimers as an important strategy in cell therapy and regenerative medicine.

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Cysteine Metabolic Circuitries: Druggable Targets in Cancer

Cysteine Metabolic Circuitries: Druggable Targets in Cancer | iBB | Scoop.it

To enable survival in adverse conditions, cancer cells undergo global metabolic adaptations. The amino acid cysteine actively contributes to cancer metabolic remodelling on three different levels: in its free form (redox control), as a substrate to produce hydrogen sulphide (H2S) (stimulation of cellular bioenergetics), and as a carbon source (epigenetic regulation, biomass and energy production). In review published in the British Journal of Cancer, Vasco Bonifácio from BSIRG-iBB and colleagues from CEDOC and ITQB provide a systematic portrayal of the role of cysteine in cancer biology as a source of carbon and sulphur atoms, the pivotal role of cysteine in different metabolic pathways and the importance of H2S as an energetic substrate and signalling molecule.

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