scholarly journals Considerations for drug delivery utilizing encapsulated cells: Factors for optimal cell behavior

2021 ◽  
Vol 17 (S9) ◽  
Author(s):  
Sumonto Mitra ◽  
Lars Wahlberg ◽  
Bengt Linderoth ◽  
Homira Behbahani ◽  
Maria Eriksdotter
The Analyst ◽  
2016 ◽  
Vol 141 (16) ◽  
pp. 4902-4911 ◽  
Author(s):  
D. C. Kirkpatrick ◽  
C. J. McKinney ◽  
P. B. Manis ◽  
R. M. Wightman

Simultaneous patch clamp and fast-scan cyclic voltammetry measurements were performed to monitor cell behavior during iontophoretic drug delivery.


2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Sudarshan Sahu ◽  
Avinash Sharma ◽  
Soham Mukherjee ◽  
Deepak Kumar ◽  
Fatih Sen ◽  
...  

In the field of biomaterial research, the electrospinning device is now used to manufacture nanofibers that can be used to encapsulate whole microorganisms such as bacterial cells, funguses, viruses, and even spores. The nanofiber encapsulated cells will have greater significance in the coming future because of their wide variety of applications in various fields. Nanofibers act as microorganism reservoir systems that enhance their properties such as viability, controlled release of products, biomedical applications, and bioremediation. The effect of electrostatic forces on a droplet of liquid polymer or polymer solution is based on electrospinning. Electrospun nanofibers act as ideal native extracellular matrices for microorganisms and have also had a tremendous advantage in drug delivery systems where modern research is still underway. During electrospinning, nearly all microorganisms may be inserted into a polymer matrix that forms a composite nanofiber. The evolution in electrospinning technique over the past few decades has become promising. New ideas have been generated to enhance the techniques and improve the overall applications and properties of nanofibers. This technique has been transformed by the advent of the electrospinning machine. The electrospun nanofibers can be chemically characterized by a wide variety of procedures such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and Fourier-transform infrared spectroscopy (FTIR). Electrospinning has various applications, for example, in wastewater treatment, tissue engineering, food industry, drug delivery, agriculture, and cosmetics. Nanofiber encapsulation of microorganisms increased the shelf life of the microorganisms; the cells remain viable for months. It also helps in the control release of bacterial products. The present review demonstrates the role of nanofiber in the encapsulation of the whole cell.


2014 ◽  
Vol 2 (34) ◽  
pp. 5492-5510 ◽  
Author(s):  
Haiyan Li ◽  
Yachen Xu ◽  
He Xu ◽  
Jiang Chang

Multilevel structures of electrospun membranes can be controlled and the designed structures can strongly affect cell behavior and drug delivery.


2018 ◽  
Vol 32 (S1) ◽  
Author(s):  
Donatella Lucchetti ◽  
Luigi Perelli ◽  
Filomena Colella ◽  
Gianluca Scoarughi ◽  
Gaetano Barbato ◽  
...  

2020 ◽  
Vol 63 (4) ◽  
pp. 599-601 ◽  
Author(s):  
Zhaowei Chen ◽  
Di Wen ◽  
Zhen Gu

Author(s):  
G.E. Visscher ◽  
R. L. Robison ◽  
G. J. Argentieri

The use of various bioerodable polymers as drug delivery systems has gained considerable interest in recent years. Among some of the shapes used as delivery systems are films, rods and microcapsules. The work presented here will deal with the techniques we have utilized for the analysis of the tissue reaction to and actual biodegradation of injectable microcapsules. This work has utilized light microscopic (LM), transmission (TEM) and scanning (SEM) electron microscopic techniques. The design of our studies has utilized methodology that would; 1. best characterize the actual degradation process without artifacts introduced by fixation procedures and 2. allow for reproducible results.In our studies, the gastrocnemius muscle of the rat was chosen as the injection site. Prior to the injection of microcapsules the skin above the sites was shaved and tattooed for later recognition and recovery. 1.0 cc syringes were loaded with the desired quantity of microcapsules and the vehicle (0.5% hydroxypropylmethycellulose) drawn up. The syringes were agitated to suspend the microcapsules in the injection vehicle.


2019 ◽  
Vol 47 (5) ◽  
pp. 1543-1555 ◽  
Author(s):  
Maurizio Mongiat ◽  
Simone Buraschi ◽  
Eva Andreuzzi ◽  
Thomas Neill ◽  
Renato V. Iozzo

Abstract The extracellular matrix is a network of secreted macromolecules that provides a harmonious meshwork for the growth and homeostatic development of organisms. It conveys multiple signaling cascades affecting specific surface receptors that impact cell behavior. During cancer growth, this bioactive meshwork is remodeled and enriched in newly formed blood vessels, which provide nutrients and oxygen to the growing tumor cells. Remodeling of the tumor microenvironment leads to the formation of bioactive fragments that may have a distinct function from their parent molecules, and the balance among these factors directly influence cell viability and metastatic progression. Indeed, the matrix acts as a gatekeeper by regulating the access of cancer cells to nutrients. Here, we will critically evaluate the role of selected matrix constituents in regulating tumor angiogenesis and provide up-to-date information concerning their primary mechanisms of action.


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