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Bontemps et al (1991) avaient découvert que des hépatocytes isolés de rat en anoxie incorporaient encore aisément de l’adénosine radioactive dans l’AMP, alors que l’ATP nécessaire pour la phosphorylation du nucléoside avait quasiment complètement disparu. Cette utilisation d’adénosine radioactive ne correspondait cependant ni à une disparition réelle de l’adénosine, ni à une synthèse nette de nucléotide adényliques. Par la suite, ils purent mettre en évidence que la fraction cytosolique du foie de rat peut catalyser une réaction d’échange entre l’adénosine et l’AMP, de sorte que l’adénosine peut effectivement être phosphorylée en l’absence d’ATP.
Le but de notre travail était d’identifier l’enzyme responsable de cette réaction. Nous avons envisagé qu’elle pourrait être catalysée par l’adénosine kinase elle-même ou par la 5’-nucléotidase cytosolique, pour laquelle un échange IMP-inosine avait déjà été décrit. Nos résultats montrent que la première hypothèse était la bonne. L’activité d’échange adénosine-AMP est en effet inhibée par plusieurs inhibiteurs de l’adénosine kinase et co-élue avec cette enzyme dans plusieurs systèmes de chromatographie, tels la DEAE-Sepharose, le Sepharose G-100 et l’AMP-Sepharose. Son poids moléculaire correspond aussi à celui de l’adénosine kinases. D’un point de vue cinétique, nous montrons que la réaction d’échange nécessite la présence de Mg++ et que ses Km pour l’adénosine et l’AMP sont tels que cette réaction peut effectivement se passer dans la cellule intacte. Nous avons par ailleurs remarqué que cette réaction est fortement stimulée par le 2,3-biphosphoglycérate, un stimulateur que l’on croyait spécifique de la 5’-nucléotidase cytosolique. L’ensemble de nos résultats indique que le mécanisme de la réaction de l’adénosine kinase de foie de rat est un mécanisme « BiBi » ping pong
Adenosine --- Adenosine Monophosphate --- Rats
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Cyclic adenosine monophosphate (cAMP) is a second messenger of paramount biological importance, involved in the regulation of a significant number of cellular functions through the cAMP-dependent intracellular signal transduction pathways. The aim of this "Frontiers in Pharmacology" Research Topic was to attract contributions that highlight emerging ideas in the cAMP field that: (i) describe its role in cellular function and homeostasis, (ii) present the current approaches to its pharmacological manipulation, and (iii) clarify its central role in the development of more targeted therapeutic approaches toward a spectrum of diseases. The present collection of articles highlights, in a representative (but certainly not exhaustive) way, the research activity and emerging concepts in the field, while it also reveals the therapeutic potential that targeted pharmacological manipulation of intracellular cAMP levels could exert on a number of pathological conditions.
signaling --- pharmacological manipulation --- cyclic adenosine monophosphate --- Disease --- Therapeutic applications --- Homeostasis --- cAMP --- Cellular function
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Cyclic adenosine monophosphate (cAMP) is a second messenger of paramount biological importance, involved in the regulation of a significant number of cellular functions through the cAMP-dependent intracellular signal transduction pathways. The aim of this "Frontiers in Pharmacology" Research Topic was to attract contributions that highlight emerging ideas in the cAMP field that: (i) describe its role in cellular function and homeostasis, (ii) present the current approaches to its pharmacological manipulation, and (iii) clarify its central role in the development of more targeted therapeutic approaches toward a spectrum of diseases. The present collection of articles highlights, in a representative (but certainly not exhaustive) way, the research activity and emerging concepts in the field, while it also reveals the therapeutic potential that targeted pharmacological manipulation of intracellular cAMP levels could exert on a number of pathological conditions.
signaling --- pharmacological manipulation --- cyclic adenosine monophosphate --- Disease --- Therapeutic applications --- Homeostasis --- cAMP --- Cellular function
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Cyclic adenosine monophosphate (cAMP) is a second messenger of paramount biological importance, involved in the regulation of a significant number of cellular functions through the cAMP-dependent intracellular signal transduction pathways. The aim of this "Frontiers in Pharmacology" Research Topic was to attract contributions that highlight emerging ideas in the cAMP field that: (i) describe its role in cellular function and homeostasis, (ii) present the current approaches to its pharmacological manipulation, and (iii) clarify its central role in the development of more targeted therapeutic approaches toward a spectrum of diseases. The present collection of articles highlights, in a representative (but certainly not exhaustive) way, the research activity and emerging concepts in the field, while it also reveals the therapeutic potential that targeted pharmacological manipulation of intracellular cAMP levels could exert on a number of pathological conditions.
signaling --- pharmacological manipulation --- cyclic adenosine monophosphate --- Disease --- Therapeutic applications --- Homeostasis --- cAMP --- Cellular function
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Adenosine Monophosphate --- Asthma --- Asthma --- Bronchoconstriction --- Smoking --- diagnostic use --- diagnosis --- pathology --- pathology
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Blood Platelets --- Purinergic P2 Receptor Antagonists --- Thrombin --- Thromboembolism --- Adenosine Monophosphate --- Platelet Activation --- metabolism --- biosynthesis --- drug therapy --- pharmacology --- physiology
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Adenylic acid --- Adenosine --- Adenine nucleotides --- Neurotransmitters --- Physiological effect --- Testing --- Congresses --- -Adenosine --- -Adenylic acid --- -Neurotransmitters --- #Lilly --- Chemical nerve transmitters --- Nerve transmitter substances --- Neural transmitters --- Neurohumors --- Neuroregulators --- Synaptic transmitters --- Transmitters, Chemical nerve --- Transmitters, Synaptic --- Neurochemistry --- Neural transmission --- Adenine ribonucleotide --- Adenine-ribose phosphate --- Adenosine monophosphate --- Adenosine phosphate --- Adenosine phosphoric acid --- AMP (Biochemistry) --- Adenine --- Adenine nucleoside phosphates --- Adenosine phosphates --- Purine nucleotides --- Adenocard --- Adenoscan --- Purine nucleosides --- Ribonucleosides --- Adenylic acid - Physiological effect --- Adenosine - Physiological effect --- Adenosine - Testing --- Adenine nucleotides - Congresses --- Adenosine pharmacology --- Adenosine physiology
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Materials science and engineering are strongly developing tools with increasing impact in the biotechnological and biomedical areas. Interestingly, research in molecular and cellular biology is often at the core of the design and development of materials-based approaches, providing biological rationale. Focused on research relying on biology–materials interaction, IJMS launched a Special Issue named “Cells and Materials for Disease Modeling and Regenerative Medicine”. The aim of the Special Issue was to generate a compilation of in vitro and in vivo strategies based on cell–material interactions. This book compiles the papers published in that Special Issue and includes a selection of six original scientific experimental articles and six comprehensive reviews. We are convinced that this collection of articles shows representative examples of the state of the art in the field, unveiling the relevance of materials research in generating new regenerative medicine and disease modeling approaches.
Leigh syndrome --- mitochondrial disorder --- iPSC --- NSC --- neuron --- disease modeling --- mtDNA --- high hydrostatic pressure --- devitalization --- decellularization --- allografts --- regenerative medicine --- bone and cartilage regeneration --- dentogenesis --- amelogenesis --- dentinogenesis --- cementogenesis --- drug release materials --- scaffolds --- odontogenic cells --- stem cells --- whole-tooth regeneration --- psoriasis --- cyclic adenosine monophosphate --- cholera toxin --- isoproterenol --- tissue engineering --- extracellular matrix --- collagen --- elastin --- bladder --- compliance --- microarchitecture --- biomimicry --- blood cancer --- bone marrow --- niche --- microenvironment --- 3D models --- tumor-on-a-chip --- leukemia --- myeloma --- biomaterials --- cytokines --- growth factors --- cardiac tissue regeneration --- adipose tissue --- fibrosis --- in vitro models --- in vivo models --- dental pulp stem cells --- osteogenesis --- rheumatoid arthritis --- mesenchymal stromal cells --- co-culture --- 3D cell culture --- explants --- joint-on-a-chip --- piezoelectric --- electroactive --- patterning --- cell differentiation --- bone tissue engineering
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Materials science and engineering are strongly developing tools with increasing impact in the biotechnological and biomedical areas. Interestingly, research in molecular and cellular biology is often at the core of the design and development of materials-based approaches, providing biological rationale. Focused on research relying on biology–materials interaction, IJMS launched a Special Issue named “Cells and Materials for Disease Modeling and Regenerative Medicine”. The aim of the Special Issue was to generate a compilation of in vitro and in vivo strategies based on cell–material interactions. This book compiles the papers published in that Special Issue and includes a selection of six original scientific experimental articles and six comprehensive reviews. We are convinced that this collection of articles shows representative examples of the state of the art in the field, unveiling the relevance of materials research in generating new regenerative medicine and disease modeling approaches.
Research & information: general --- Leigh syndrome --- mitochondrial disorder --- iPSC --- NSC --- neuron --- disease modeling --- mtDNA --- high hydrostatic pressure --- devitalization --- decellularization --- allografts --- regenerative medicine --- bone and cartilage regeneration --- dentogenesis --- amelogenesis --- dentinogenesis --- cementogenesis --- drug release materials --- scaffolds --- odontogenic cells --- stem cells --- whole-tooth regeneration --- psoriasis --- cyclic adenosine monophosphate --- cholera toxin --- isoproterenol --- tissue engineering --- extracellular matrix --- collagen --- elastin --- bladder --- compliance --- microarchitecture --- biomimicry --- blood cancer --- bone marrow --- niche --- microenvironment --- 3D models --- tumor-on-a-chip --- leukemia --- myeloma --- biomaterials --- cytokines --- growth factors --- cardiac tissue regeneration --- adipose tissue --- fibrosis --- in vitro models --- in vivo models --- dental pulp stem cells --- osteogenesis --- rheumatoid arthritis --- mesenchymal stromal cells --- co-culture --- 3D cell culture --- explants --- joint-on-a-chip --- piezoelectric --- electroactive --- patterning --- cell differentiation --- bone tissue engineering
Choose an application
Materials science and engineering are strongly developing tools with increasing impact in the biotechnological and biomedical areas. Interestingly, research in molecular and cellular biology is often at the core of the design and development of materials-based approaches, providing biological rationale. Focused on research relying on biology–materials interaction, IJMS launched a Special Issue named “Cells and Materials for Disease Modeling and Regenerative Medicine”. The aim of the Special Issue was to generate a compilation of in vitro and in vivo strategies based on cell–material interactions. This book compiles the papers published in that Special Issue and includes a selection of six original scientific experimental articles and six comprehensive reviews. We are convinced that this collection of articles shows representative examples of the state of the art in the field, unveiling the relevance of materials research in generating new regenerative medicine and disease modeling approaches.
Research & information: general --- Leigh syndrome --- mitochondrial disorder --- iPSC --- NSC --- neuron --- disease modeling --- mtDNA --- high hydrostatic pressure --- devitalization --- decellularization --- allografts --- regenerative medicine --- bone and cartilage regeneration --- dentogenesis --- amelogenesis --- dentinogenesis --- cementogenesis --- drug release materials --- scaffolds --- odontogenic cells --- stem cells --- whole-tooth regeneration --- psoriasis --- cyclic adenosine monophosphate --- cholera toxin --- isoproterenol --- tissue engineering --- extracellular matrix --- collagen --- elastin --- bladder --- compliance --- microarchitecture --- biomimicry --- blood cancer --- bone marrow --- niche --- microenvironment --- 3D models --- tumor-on-a-chip --- leukemia --- myeloma --- biomaterials --- cytokines --- growth factors --- cardiac tissue regeneration --- adipose tissue --- fibrosis --- in vitro models --- in vivo models --- dental pulp stem cells --- osteogenesis --- rheumatoid arthritis --- mesenchymal stromal cells --- co-culture --- 3D cell culture --- explants --- joint-on-a-chip --- piezoelectric --- electroactive --- patterning --- cell differentiation --- bone tissue engineering
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