We describe a method to hold living cells in place that ordinarily do not adhere to glass coverslips. The method, developed for insect spermatocytes but with application to other cell types, consists of embedding cells in a fibrin clot that forms after the enzyme thrombin cleaves the blood protein fibrinogen. The method permits continuous observation of living cells as they are treated with and recover from drug or other treatments: when held in the clot the living cells remain in place and keep their shapes when perfused with drugs that ordinarily cause drastic shape changes, and they remain in place and keep their shapes through lysis/fixation procedures. We describe how to place live cells in a fibrin clot and how subsequently to perfuse them.
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http://dx.doi.org/10.1016/j.cellbi.2005.04.010 | DOI Listing |
J Exp Biol
January 2025
Ornis italica, Rome, Italy.
Rapid reduction of body size in populations responding to global warming suggests the involvement of temperature-dependent physiological adjustments during growth, such as mitochondrial alterations, in the efficiency of producing metabolic energy, a process that is poorly explored, especially in endotherms. Here, we examined the mitochondrial metabolism and proteomic profile of red blood cells in relation to body size and cellular energetics in nestling shearwaters (Calonectris diomedea) developing at different natural temperatures. We found that nestlings of warmer nests had lighter bodies and smaller beaks at fledging.
View Article and Find Full Text PDFBioact Mater
April 2025
State Key Laboratory of New Ceramics and Fine Processing, Key Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.
Biomimetic neural substitutes, constructed through the bottom-up assembly of cell-matrix modulus via 3D bioprinting, hold great promise for neural regeneration. However, achieving precise control over the fate of neural stem cells (NSCs) to ensure biological functionality remains challenging. Cell behaviors are closely linked to cellular dynamics and cell-matrix mechanotransduction within a 3D microenvironment.
View Article and Find Full Text PDFJACS Au
January 2025
Department of Chemical Sciences, Tata Institute of Fundamental Research, Mumbai 400005, India.
Hydrogen peroxide (HO) plays a critical role in the regulation and progress of autophagy, an essential recycling process that influences cellular homeostasis and stress response. Autophagy is characterized by the formation of intracellular vesicles analogous to recycle "bags" called autophagosomes, which fuse with lysosomes to form autolysosomes, eventually ending up as lysosomes. We have developed two novel autophagic vesicle-targeted peptide-based sensors, for HO and for pH, to simultaneously track HO and pH dynamics within autophagic vesicles as autophagy advances.
View Article and Find Full Text PDFBMJ Oncol
February 2024
Institute of Social and Preventative Medicine, University of Bern, Bern, Switzerland.
Objective: This study aimed to provide evidence to improve cervical screening for women living with HIV (WLHIV). We assessed the accuracy of screening tests that can be used in low-resource settings and give results at the same visit.
Methods And Analysis: We conducted a paired, prospective study among consecutive eligible WLHIV, aged 18-65 years, receiving cervical cancer screening at one hospital in Lusaka, Zambia.
NAR Genom Bioinform
March 2025
Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8561, Japan.
Understanding RNA structure is crucial for elucidating its regulatory mechanisms. With the recent commercialization of messenger RNA vaccines, the profound impact of RNA structure on stability and translation efficiency has become increasingly evident, underscoring the importance of understanding RNA structure. Chemical probing of RNA has emerged as a powerful technique for investigating RNA structure in living cells.
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