Article
Engineering, Marine
Lucia Manni, Federico Caicci, Chiara Anselmi, Virginia Vanni, Silvia Mercurio, Roberta Pennati
Summary: This study describes the anatomy of the larva of Halocynthia roretzi, a solitary ascidian, using 3D reconstruction and histological/TEM observations. The larva exhibits a higher level of adultation compared to other solitary ascidians. Additionally, the study reveals dynamic changes in the papillae of H. roretzi during settlement.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Biotechnology & Applied Microbiology
Bruno Navarro, Paula Elbl, Leandro F. de Oliveira, Amanda R. Piovezani, Andre L. W. dos Santos, Diego T. de Souza, Diego Demarco, Marcos S. Buckeridge, Eny I. S. Floh
Summary: The study investigated the cell-to-cell communication in cell cultures with different embryogenic potential in Araucariaangustifolia. It identified differences in protein abundance related to vesicular transport and cell-to-cell communication processes, with a callose hydrolase showing differential expression between the two cell lines. Immunocytochemical and Transmission Electron Microscopy analyses supported the finding of heightened vesicular activity in the Responsive cell line. Hence, vesicular transport and plasmodesmata regulation features play a crucial role in somatic embryogenic responsiveness in Araucariaangustifolia.
PLANT CELL TISSUE AND ORGAN CULTURE
(2022)
Article
Mechanics
M. Thbaut, S. Brisard
Summary: This paper revisits the problem of translation-invariant pressurized membranes and introduces the generalized plane strain assumption to account for the longitudinal equilibrium of the membrane. The equations of De Simone and Luongo are modified, resulting in an extended class of problems that can be (nearly) tractable analytically.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2023)
Article
Multidisciplinary Sciences
Jana Slovakova, Mateusz Sikora, Feyza Nur Arslan, Silvia Caballero-Mancebo, S. F. Gabriel Krens, Walter A. Kaufmann, Jack Merrin, Carl-Philipp Heisenberg
Summary: The tension of the actomyosin cell cortex is crucial in determining the growth and size of cell-cell contact. This relationship increases proportionally within a certain range of tension, but inversely scales above a critical threshold. This switch is caused by cortical tension promoting the anchoring of E-cadherin to the actomyosin cytoskeleton, thereby increasing clustering and stability of E-cadherin at the contact.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Green & Sustainable Science & Technology
Anirban Sengupta, Dushmanta Kumar Das
Summary: An integrated wind farm with power system introduces nonlinearity and complexity, affecting the performance of a wide area damping controller. This study designs a WADC for wind energy conversion system integrated power system considering communication latency, communication failure, and saturation. A state feedback stabilizing controller is developed using linear matrix inequality platform, controlling reactive power of the wind farm to reduce interarea oscillation. Simulation results demonstrate the controller's effectiveness in ensuring stability and eliminating inter-area oscillations in a WECS integrated power system.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Engineering, Mechanical
Slavomir Hrcek, Lukas Smetanka, Jan Steininger, Branislav Patin
Summary: The research aims to increase the durability of curved bodies with line contact by changing their shape, with a focus on calculating and comparing the durability of rolling elements with fully crowned profile and logarithmic profile.
MECHANISM AND MACHINE THEORY
(2022)
Article
Chemistry, Physical
Guanbo Min, Yang Xu, Peter Cochran, Nikolaj Gadegaard, Daniel M. Mulvihill, Ravinder Dahiya
Summary: This research reveals that the performance of triboelectric nanogenerators is related to the real contact area, with increasing contact pressure leading to higher electrical output. These findings are significant for TENG design, defining tribo-charge density, and the potential use of TENGs as self-powered sensors.
Article
Cell Biology
Kristen L. Segars, Nicholas A. Azzari, Stephanie Gomez, Cody Machen, Celeste B. Rich, Vickery Trinkaus-Randall
Summary: Research has shown that changes in corneal stiffness and signaling contribute to decreased wound healing efficacy in older mice. As mice age, the stiffness of the cornea changes, leading to longer healing times. Additionally, there is reduced calcium signaling at the wound site in older mice, resulting in lower cell activity compared to younger mice.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2022)
Review
Developmental Biology
Trevor S. Tippetts, Matthew H. Sieber, Ashley Solmonson
Summary: Metabolism plays a crucial role in development, supporting cell growth, energy production, cell differentiation, and communication. Metabolic gradients and protein modifications enable pattern formation and cell-cell communication.
Article
Biology
Yuki Fujii, Wataru C. Koizumi, Taichi Imai, Megumi Yokobori, Tomohiro Matsuo, Kotaro Oka, Kohji Hotta, Takaharu Okajima
Summary: Fujii et al. investigate the stiffness of cells in ascidian embryos from the fertilised egg to the stage before gastrulation. They find two types of cell stiffening, occurring during cell division and in the interphase, the latter of which is associated with the Rho kinase pathway. They conclude that the mechanical properties of early embryonic cells are regulated specifically at the single cell level.
COMMUNICATIONS BIOLOGY
(2021)
Article
Multidisciplinary Sciences
X. M. Liang, Y. Z. Xing, L. T. Li, W. K. Yuan, G. F. Wang
Summary: This study provides experimental evidence that there is a linear relationship between friction force and normal load, and the linearity between friction force and real contact area only holds at the loading stage, failing at the unloading stage. This may lead to a better understanding of the origin of friction.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Mechanical
R. Pinto Carvalho, A. M. Couto Carneiro, F. M. Andrade Pires, T. Doca
Summary: The proposed multiscale strategy efficiently models rough contact and predicts the evolution of contact area. By incorporating statistical information into scale transitions, the contact area fraction is evaluated effectively.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Mathematics, Applied
Guoye Guan, Xiangyu Kuang, Chao Tang, Lei Zhang
Summary: In this study, the authors compare two popular computational models, the phase-field model and the coarse-grained model, in characterizing cell morphologies, adhesion, and stiffness in a real C. elegans embryo. They find that the phase-field model is superior in capturing cell shapes and inferring cell stiffness. They also demonstrate that the phase-field model converges to the coarse-grained model under certain conditions, obtaining an isotropic intercellular force.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2023)
Article
Biochemistry & Molecular Biology
Hyun Ahm Sohn, Minho Kang, Hyunjung Ha, Young Il Yeom, Kyung Chan Park, Dong Chul Lee
Summary: Density-dependent regulation of cell growth is mediated by cell-cell contact, and R-PTP-kappa acts as a crucial regulator in this process by suppressing E2F activity and inducing cell cycle arrest.
Article
Biology
William R. Jeffery, Spela Goricki
Summary: In the ascidian Ciona intestinalis, regeneration and homeostatic growth involve the activity of adult stem cells in the branchial sac, with apoptosis and Wnt signaling playing key roles. Apoptosis has different effects in regeneration and homeostatic growth processes.
Article
Biochemistry & Molecular Biology
Justine Dardaillon, Delphine Dauga, Paul Simion, Emmanuel Faure, Takeshi A. Onuma, Melissa B. DeBiasse, Alexandra Louis, Kazuhiro R. Nitta, Magali Naville, Lydia Besnardeau, Wendy Reeves, Kai Wang, Marie Fagotto, Marion Gueroult-Bellone, Shigeki Fujiwara, Remi Dumollard, Michael Veeman, Jean-Nicolas Volff, Hugues Roest Crollius, Emmanuel Douzery, Joseph F. Ryan, Bradley Davidson, Hiroki Nishida, Christelle Dantec, Patrick Lemaire
NUCLEIC ACIDS RESEARCH
(2020)
Article
Biochemistry & Molecular Biology
Yuchen Long, Ibrahim Cheddadi, Gabriella Mosca, Vincent Mirabet, Mathilde Dumond, Annamaria Kiss, Jan Traas, Christophe Godin, Arezki Boudaoud
Article
Developmental Biology
Ulla-Maj Fiuza, Takefumi Negishi, Alice Rouan, Hitoyoshi Yasuo, Patrick Lemaire
Article
Cell Biology
Kai Wang, Ryo Tomura, Wei Chen, Miho Kiyooka, Hinako Ishizaki, Tomoyuki Aizu, Yohei Minakuchi, Masahide Seki, Yutaka Suzuki, Tatsuya Omotezako, Ritsuko Suyama, Aki Masunaga, Charles Plessy, Nicholas M. Luscombe, Christelle Dantec, Patrick Lemaire, Takehiko Itoh, Atsushi Toyoda, Hiroki Nishida, Takeshi A. Onuma
DEVELOPMENT GROWTH & DIFFERENTIATION
(2020)
Review
Cell Biology
Ulla-Maj Fiuza, Patrick Lemaire
Summary: Gastrulation is a universal developmental process involving internalization of mesodermal and endodermal tissues and spreading of the ectoderm. Recent research highlights the importance of tissue rheological properties in regulating gastrulation. Ascidians, with invariant cell lineages and solid-like rheological behavior, provide insights into the mechanical and genetic control of gastrulation.
SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY
(2021)
Article
Multidisciplinary Sciences
Julien Fierling, Alphy John, Barthelemy Delorme, Alexandre Torzynski, Guy Blanchard, Claire Lye, Gregoire Malandain, Benedicte Sanson, Jocelyn Etienne, Philippe Marmottant, Catherine Quilliet, Matteo Rauzi, Anna Popkova
Summary: Cell apical constriction driven by actomyosin contraction forces is a crucial mechanism in tissue folding during embryo development. This study challenges the idea that cell apical contraction forces alone are sufficient to drive tissue folding, and instead shows that a balance of forces at the tissue surface is necessary and responsible for initiating embryo gastrulation.
NATURE COMMUNICATIONS
(2022)
Article
Biotechnology & Applied Microbiology
Caroline Malin-Mayor, Peter Hirsch, Leo Guignard, Katie McDole, Yinan Wan, William C. Lemon, Dagmar Kainmueller, Philipp J. Keller, Stephan Preibisch, Jan Funke
Summary: The method combines deep learning and global optimization to automatically identify and track nuclei in developing embryos, improving understanding of cell fate decisions.
NATURE BIOTECHNOLOGY
(2022)
Article
Biochemical Research Methods
Carlo Bevilacqua, Juan Manuel Gomez, Ulla-Maj Fiuza, Chii Jou Chan, Ling Wang, Sebastian Hambura, Manuel Eguren, Jan Ellenberg, Alba Diz-Munoz, Maria Leptin, Robert Prevedel
Summary: This article presents a high-resolution line-scanning Brillouin microscope for fast 3D imaging of dynamic biological processes with low phototoxicity. It demonstrates the visualization of mechanical properties of cells and tissues in living organisms such as fruit flies, ascidians, and mouse embryos. The technique enables fast 3D imaging of mechanical properties with low phototoxicity.
Review
Biology
Eugenio Azpeitia, Francois Parcy, Christophe Godin
Summary: Biological organisms exhibit immense diversity in form, including fractal structures. A recent study used a multi-scale modelling approach to understand how gene activity leads to the development of macroscopic fractal-like structures in plants.
COMPTES RENDUS BIOLOGIES
(2023)
Article
Mathematics, Applied
Farah Ben Naoum, Christophe Godin, Romain Azais
Summary: This paper explores analogous questions in a space of combinatorial objects with no algebraic structure, focusing on the model of unordered unlabeled rooted trees endowed with Zhang edit distance. It defines a canonical unbiased random walk on this space and provides an efficient algorithm for evaluating its escape rate.
DISCRETE APPLIED MATHEMATICS
(2023)
Article
Plant Sciences
Teva Vernoux, Fabrice Besnard, Christophe Godin
Summary: Plants generate a variety of shoot forms mainly from the activity of a stem cell niche at the shoot tip. Recent efforts have established a theoretical framework for understanding form emergence at the shoot tip, enabling the use of modelling and biological approaches to unravel the underlying mechanisms. This advancement brings us closer to identifying the principles of construction of plant shoot tips, with a proposed roadmap for developing a general theory of form development at the shoot tip in consideration of current limitations in knowledge.