Results 91 to 100 of about 260,357 (315)

Novel Pseudotaxis Mechanisms Improve Migration of Straight-Swimming Bacterial Mutants Through a Porous Environment

mBio, 2015
Bacterial locomotion driven by flagella is given directionality by the chemotaxis signal transduction network. In the classic plate assays of migration in porous motility agar, efficient motility is compromised in chemotaxis mutants of diverse bacteria ...
Bitan Mohari, Nicholas A. Licata, David T. Kysela, Peter M. Merritt, Suchetana Mukhopadhay, Yves V. Brun, Sima Setayeshgar, Clay Fuqua   +7 more
doaj   +1 more source

Bacterial chemotaxis without gradient-sensing [PDF]

, 2013
Models for chemotaxis are based on gradient sensing of individual organisms. The key contribution of Keller and Segel is showing that erratic movements of individuals may result in an accurate chemotaxis phenomenon as a group.
Kim, Yong-Jung, Yoon, Changwook
core  

Biomimetic Cell Membrane‐Coated Scaffolds for Enhanced Tissue Regeneration

Advanced Materials, EarlyView.
This review examines the development and use of cell membrane‐coated scaffolds in tissue engineering. Bioinspired phospholipid and glycocalyx coatings enhance anti‐fouling, anti‐thrombogenic, and selective molecular recognition properties. Native cell membrane coatings further support cell‐specific interactions, immune modulation, and reduced bacterial
Carmen Alvarez‐Lorenzo, Alejandro Ramirez‐Romero, Diana Peixoto, Maria Vivero‐Lopez, Isabel Rodríguez‐Moldes, Angel Concheiro   +5 more
wiley   +1 more source

Adaptation kinetics in bacterial chemotaxis [PDF]

, 1983
Cells of Escherichia coli, tethered to glass by a single flagellum, were subjected to constant flow of a medium containing the attractant alpha-methyl-DL-aspartate. The concentration of this chemical was varied with a programmable mixing apparatus over a
Berg, Howard C., Block, Steven M., Segall, Jeffrey E.   +2 more
core   +1 more source

An Injection‐Molded Modified Silicone Rubber for Cancer‐on‐Chip Applications

Advanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
This study describes the characterization and application of an injection‐molded functionalized PDMS fluidic insert for the commercially available Micronit system. Modified PDMS can accommodate cell culture and is able to covalently bind proteins for long‐lasting coatings under flow‐conditions.
Ben J. Haspels, Frederikus Bakker, Lucas J. A. M. Beckers, Roland Kanaar, Koen C. Kriege, Susanne M. Valster, Roland C. M. Vulders, Maayke M. P. Kuijten   +7 more
wiley   +1 more source

Bioengineered Models of Nerve Regeneration

Advanced Materials Technologies, EarlyView.
Bioengineered nerve regeneration platforms ranging from patterned cell cultures and hydrogels to fibrous scaffolds and microfluidic systems are reviewed, highlighting the complex cellular and biochemical environments essential for nerve repair. Challenges associated with these platforms, such as balancing complexity with throughput and the need for ...
Madalynn Jade Thompson, John Paul Frampton   +1 more
wiley   +1 more source

Integration of the Second Messenger c-di-GMP into the Chemotactic Signaling Pathway

mBio, 2013
Elevated intracellular levels of the bacterial second messenger c-di-GMP are known to suppress motility and promote sessility. Bacterial chemotaxis guides motile cells in gradients of attractants and repellents over broad concentration ranges, thus ...
Matthew H. Russell, Amber N. Bible, Xin Fang, Jessica R. Gooding, Shawn R. Campagna, Mark Gomelsky, Gladys Alexandre   +6 more
doaj   +1 more source

Multimodal Actuation and Environment Adaptive Strategies of Bio‐Inspired Micro/Nanorobots in Precision Medicine

Advanced Robotics Research, EarlyView.
An introduction for multidrive and environment‐adaptive micro/nanorobotics: design and fabrication strategies, intelligent actuation, and their applications. Various intelligent actuation approaches—magnetic, acoustic, optical, chemical, and biological—can be synergistically designed to enhance flexibility and adaptive behavior for precision medicine ...
Aiqing Ma, Han Gong, Jiacheng Ouyang, Liqi Chen, Tianfang Kang, Yiran He, Guojun Huang, Sidi Zheng, Ting Yin, Hong Pan, Lintao Cai   +10 more
wiley   +1 more source

Mechanical Interactions Impact the Functions of Immune Cells and Their Application in Immunoengineering

Advanced Therapeutics, EarlyView.
This review covers the mechanical forces experienced by immune cells through cell–cell and cell–extracellular matrix interactions and how these forces influence their receptors and functions. These relationships between forces and cellular functions can be exploited using engineering techniques to modify the physical properties of materials for novel ...
Yu‐Chang Chen, Nghi M. Tran, Kyle H. Vining   +2 more
wiley   +1 more source

Pattern formation of a volume-filling chemotaxis model with a bistable source

AIMS Mathematics
In this paper, the pattern formation of a volume-filling chemotaxis model with bistable source terms was studied. First, it was shown that self-diffusion does not induce Turing patterns, but chemotaxis-driven instability occurs.
Zuojun Ma
doaj   +1 more source