The analysis of biological systems requires mathematical tools that represent their complexity from the molecular scale up to the tissue level. The formation of cell aggregates by chemotaxis is investigated using Delaunay object dynamics. It is found that when cells migrate fast such that the chemokine distribution is far from equilibrium, the details of the chemokine receptor dynamics can induce an internalization driven instability of cell aggregates. The instability occurs in a parameter regime relevant for lymphoid tissue and is similar to ectopic lymphoid structures.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevLett.101.148102 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Jararaca GPIb-binding protein causes thrombocytopenia during Bothrops jararaca envenomation.
Sci Rep
December 2024
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
Inoculation of Bothrops jararaca snake venom (BjV) induces thrombocytopenia in humans and various animal species. Although several BjV toxins acting on hemostasis have been well characterized in vitro, it is not known which one is responsible for inducing thrombocytopenia in vivo. In previous studies, we showed that BjV incubated with metalloproteinase or serine proteinase inhibitors and/or anti-botrocetin antibodies still induced thrombocytopenia in rats and mice.
View Article and Find Full Text PDFThe endocannabinoid system's genetic polymorphisms in sickle cell anemia patients.
Sci Rep
December 2024
Molecular Biology and Genetics Laboratory (LGBM), UFMS - Federal University of Mato Grosso do Sul, Três Lagoas, Brazil.
Sickle cell anemia (SCA) is a monogenic blood disease with complex and multifactorial pathophysiology. The endocannabinoid system (ECS) could be a candidate for modulating SCA complications, such as priapism, as it has demonstrated an essential role in hematopoiesis, platelet aggregation, and immune responses. We evaluated the association of ECS-related single nucleotide polymorphisms (SNP) (FAAH rs324420, MAGL rs604300, CNR1 rs7766029, and CNR2 rs35761398) with priapism in a Brazilian SCA cohort.
View Article and Find Full Text PDFStress granules sequester autophagy proteins to facilitate plant recovery from heat stress.
Nat Commun
December 2024
Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China.
The autophagy pathway regulates the degradation of misfolded proteins caused by heat stress (HS) in the cytoplasm, thereby maintaining cellular homeostasis. Although previous studies have established that autophagy (ATG) genes are transcriptionally upregulated in response to HS, the precise regulation of ATG proteins at the subcellular level remains poorly understood. In this study, we provide compelling evidence for the translocation of key autophagy components, including the ATG1/ATG13 kinase complex (ATG1a, ATG13a), PI3K complex (ATG6, VPS34), and ATG8-PE system (ATG5), to HS-induced stress granules (SGs) in Arabidopsis thaliana.
View Article and Find Full Text PDFA coopetition-driven strategy of parallel/perpendicular aromatic stacking enabling metastable supramolecular polymerization.
Nat Commun
December 2024
School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, 710072, China.
Metastable supramolecular polymerization under kinetic control has recently been recognized as a closer way to biosystem than thermodynamic process. While impressive works on metastable supramolecular systems have been reported, the library of available non-covalent driving modes is still small and a simple yet versatile solution is highly desirable to design for easily regulating the energy landscapes of metastable aggregation. Herein, we propose a coopetition-driven metastability strategy for parallel/perpendicular aromatic stacking to construct metastable supramolecular polymers derived from a class of simple monomers consisting of lateral indoles and aromatic core.
View Article and Find Full Text PDFCurrent perspectives on the dynamic culture of mesenchymal stromal/stem cell spheroids.
Stem Cells Transl Med
December 2024
Division of Molecular and Regenerative Prosthodontics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan.
Mesenchymal stromal/stem cells (MSCs) are promising candidates for regenerative medicine owing to their self-renewal properties, multilineage differentiation, immunomodulatory effects, and angiogenic potential. MSC spheroids fabricated by 3D culture have recently shown enhanced therapeutic potential. MSC spheroids create a specialized niche with tight cell-cell and cell-extracellular matrix interactions, optimizing their cellular function by mimicking the in vivo environment.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!