This article represents the effects on actin filaments attached to magnetic nanoparticles when exposed to low-intensity magnetic field. In this approach, streptavidin functionalized magnetic nanoparticles were used to demonstrate the alignment of actin filament under external magnetic field of 22mT. To check the directionality of myosin on magnetically aligned actin filaments in vitro motility assay was performed with myosin and average velocity was found to be 3.50microm/s. It was observed that myosin moves in the direction in which actin filaments were magnetically aligned. This approach will explore the capability of integrating molecular motor into microelectronics mechanical system (MEMS) and nanoelectro-mechanical system (NEMS).
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1016/j.ijbiomac.2010.06.005 | DOI Listing |
Trends Cell Biol
January 2025
Department of Structural Biochemistry, Max Planck Institute of Molecular Physiology, 44227 Dortmund, Germany. Electronic address:
The dynamic turnover of actin filaments drives the morphogenesis and migration of all eukaryotic cells. This review summarizes recent insights into the molecular mechanisms of actin polymerization and disassembly obtained through high-resolution structures of actin filament assemblies. We first describe how, upon polymerization, actin subunits age within the filament through changes in their associated adenine nucleotide.
View Article and Find Full Text PDFACS Sens
January 2025
Cancer Hospital of Dalian University of Technology, Shenyang 110042, China.
Intracellular morphological apical-basal polarity, regulated by conserved polarity proteins, plays a crucial role in cell migration and metastasis. In this study, using a genetically encoded Förster resonance energy transfer (FRET) biosensor to visually present the spatiotemporal stress state between the lipid rafts on the membrane and the linked actin, we first provide the evidence for the existence of intrinsic apical-basal stress polarity in tumor cells and demonstrate that this polarity is a prerequisite for the formation of flow-induced front-back stress polarity. Interestingly, our study revealed that the front-back stress polarity disappeared upon the disruption of intrinsic apical-basal stress discrepancy, resulting in a large attenuated cell migration activity reduced from 76.
View Article and Find Full Text PDFJ Anim Sci
January 2025
Department of Animal Science, Federal University of Viçosa, Viçosa, MG, 36570-900, Brazil.
Pig production is an agricultural sector of great economic and social relevance to Brazil and global markets. Feed efficiency traits directly influence the sustainability of pig production due to the economic impact of feed costs on the production system and the environmental footprint of the industry. Therefore, breeding for improved feed efficiency has been a target of worldwide pig breeding programs.
View Article and Find Full Text PDFProtein Pept Lett
January 2025
Department of General Surgery, The Second Hospital of Dalian Medical University, Dalian, China.
Background: MARVEL domain-containing 1 (MARVELD1) has been implicated in the progression of several cancers, but its role in pancreatic adenocarcinoma (PAAD) remains poorly understood.
Methods: RNA-seq data from the TCGA-PAAD and GTEx-Pancreas cohorts were analyzed to assess MARVELD1 expression. Stable MARVELD1 knockdown and overexpression were conducted in BxPC3 and PANC-1 cells.
Sci Rep
January 2025
Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi, China.
Sepsis is a life-threatening severe organ dysfunction, and the pathogenesis remains uncertain. Increasing evidence suggests that circRNAs, mRNAs, and microRNAs can interact to jointly regulate the development of sepsis. Identifying the interaction between ceRNA regulatory networks and sepsis may contribute to our deeper understanding of the pathogenesis of sepsis, bring new insights into early recognition and treatment of sepsis.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!