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Transcriptomic Shifts in Multipotent Mesenchymal Stromal Cells during Microgravity Simulation.
Dokl Biochem Biophys
January 2025
Institute of Biomedical Problems, Russian Academy of Sciences, 123007, Moscow, Russia.
One of the most obvious manifestations of the negative impact of space flight factors on the human physiology is osteopenia. With the active development of manned space flights and the increase in the duration of humans' persistence in weightlessness, there is a growing need to understand the mechanisms of changes occurring at the cellular level involved in the replenishment of bone tissue. Using the RNA sequencing method, changes in the transcriptome profile of MMSCs were studied after a 5-day simulation of the microgravity effects.
View Article and Find Full Text PDFHuman keratinocytes grown at a gas-permeable interface in vitro stratify correctly to generate engineered human epidermis.
Cytotherapy
December 2024
School of Biological Sciences, University of Auckland, Auckland, New Zealand; Maurice Wilkins Centre, The University of Auckland, Auckland, New Zealand. Electronic address:
Background: One of the key functions of human skin is to provide a barrier, protecting the body from the surrounding environment and maintaining homeostasis of the internal environment. A mature, stratified epidermis is critical to achieve skin barrier function and is particularly important when producing skin grafts in vitro for wound treatment. For decades epidermal stratification has been achieved in vitro by culturing keratinocytes at an air-liquid interface, triggering proliferating basal keratinocytes to differentiate and form all epidermal layers.
View Article and Find Full Text PDFBillion-Scale Expansion of Functional hiPSC-Derived Cardiomyocytes in Bioreactors Through Oxygen Control and Continuous Wnt Activation.
Adv Sci (Weinh)
January 2025
iBET, Instituto de Biologia Experimental e Tecnológica, Apartado 12, Oeiras, 2780901, Portugal.
Generation of upscaled quantities of human-induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CM), for therapeutic or testing applications, is both expensive and time-consuming. Herein, a scalable bioprocess for hiPSC-CM expansion in stirred-tank bioreactors (STB) is developed. By combining the continuous activation of the Wnt pathway, through perfusion of CHIR99021, within a mild hypoxia environment, the expansion of hiPSC-CM as aggregates is maximized, reaching 4 billion of pure hiPSC-CM in 2L STB.
View Article and Find Full Text PDFPurpose: Uterine leiomyomas (ULMs) are classified into those with and without MED12 mutations (MED12m(+) and MED12m(-), respectively). This study was undertaken to establish a culture system to evaluate the effect of female hormones on the growth of ULM cells in each ULM subtype.
Methods: ULM cells isolated from MED12m(+) or MED12m(-) tissues were cultured in a monolayer for 7 days with four hormone treatments: estrogen (E) and progesterone (P) (E + P), E only (E), P only (P), and medium only (CTRL).
Amyloid β (Aβ) has emerged as a pathophysiological driver in age-related macular degeneration (AMD), emphasizing its significance in the aetiology of this prevalent sight-threatening condition. The multifaceted nature of AMD pathophysiology, presumably involving diverse retinal cascades, corresponds with the complexity of Aβ-induced retinopathy. Therefore, targeting a broad array of pathogenic processes holds promise for therapeutic intervention in AMD-associated retinal pathology.
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