Background: A new intracellular adenosine triphosphate (ATP) delivery technique has been developed and was tested for skin wound care.
Methods: Eleven pairs of adult nude mice were used. ATP-vesicles were applied in 11 mice, and another 11 mice were treated with lipid vesicles only.
Results: The group treated with ATP-encapsulated fusogenic small, unilamellar lipid vesicles healed faster than the group treated with only lipid vesicles. Histologic study indicated better developed granular tissue and re-epithelialization in the study group, and wound tissue vascular endothelial growth factor expressions were also higher in ATP-vesicles treated mice.
Conclusions: This intracellular ATP delivery system may provide a new hope for wound healing as well as the treatment of medical conditions in which ischemia is involved.
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http://dx.doi.org/10.1016/j.amjsurg.2006.08.069 | DOI Listing |
Mater Today Bio
February 2025
Department of Biochemistry and Molecular Pharmacology. Istituto di Ricerche Farmacologiche Mario Negri, IRCCS, Via Mario Negri, 2, Milan, Italy.
Targeting is the most challenging problem to solve for drug delivery systems. Despite the use of targeting units such as antibodies, peptides and proteins to increase their penetration in tumors the amount of therapeutics that reach the target is very small, even with the use of nanoparticles (NPs). Nature has solved the selectivity problem using a combination of proteins and lipids that are exposed on the cell membranes and are able to recognize specific tissues as demonstrated by cancer metastasis.
View Article and Find Full Text PDFBiophys J
January 2025
Theoretical Physics of Living Matter, Institute of Biological Information Processing and Institute for Advanced Simulation, Forschungszentrum Jülich, 52425 Jülich, Germany. Electronic address:
Translocation across barriers and through constrictions is a mechanism that is often used in vivo for transporting material between compartments. A specific example is apicomplexan parasites invading host cells through the tight junction that acts as a pore, and a similar barrier crossing is involved in drug delivery using lipid vesicles penetrating intact skin. Here, we use triangulated membranes and energy minimization to study the translocation of vesicles through pores with fixed radii.
View Article and Find Full Text PDFFunction (Oxf)
January 2025
Department of Health and Exercise Science, College of Health and Human Sciences, Colorado State University, Fort Collins, CO, USA.
Extracellular vesicles (EVs) are functional lipid-bound nanoparticles trafficked between cells and found in every biofluid. It is widely claimed that EVs can be secreted by every cell, but the quantity and composition of these EVs can differ greatly among cell types and tissues. Defining this heterogeneity has broad implications for EV-based communication in health and disease.
View Article and Find Full Text PDFJ Psychiatr Res
January 2025
Department of Molecular Cell Biology, Institute for Cancer Research, Oslo University Hospital, 0379, Oslo, Norway; Centre for Cancer Cell Reprogramming, Faculty of Medicine, University of Oslo, Oslo, Norway; Department for Mechanical, Electronics and Chemical Engineering, Oslo Metropolitan University, Oslo, Norway.
Biomarkers for the diagnosis and clinical management of psychiatric disorders are currently lacking. Extracellular vesicles (EVs), lipid membrane-encapsulated vesicles released by cells, hold promise as a source of biomarkers due to their ability to carry molecules that reflect the status of their donor cells and their ubiquitous presence in biofluids. This review examines the literature on EVs in biofluids from psychiatric disorder patients, and discuss how the published studies contribute to our understanding of the pathophysiology of these conditions and to the discovery of potential biomarkers.
View Article and Find Full Text PDFInflamm Res
January 2025
Department of Food Science and Nutrition, The Hong Kong Polytechnic University, Hong Kong, SAR, China.
Background: Sclerostin (SOST) is traditionally regarded as an osteocyte-derived secreted glycoprotein that regulates bone mineralization. Recent studies reported that SOST is also released from non-skeletal sources, especially during inflammation. However, the cellular source and regulatory mechanisms governing SOST generation in inflammation remain unclear.
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