Cell culture of differentiated human salivary epithelial cells in a serum‐free and scalable suspension system: The salivary functional units model

2019 ◽  
Vol 13 (9) ◽  
pp. 1559-1570 ◽  
Author(s):  
You Jung Seo ◽  
Maria Alberta Lilliu ◽  
Ghada Abu Elghanam ◽  
Thomas T. Nguyen ◽  
Younan Liu ◽  
...  
2021 ◽  
Vol 3 ◽  
Author(s):  
Govind Gupta ◽  
Srikanth Vallabani ◽  
Romain Bordes ◽  
Kunal Bhattacharya ◽  
Bengt Fadeel

Most cell culture models are static, but the cellular microenvironment in the body is dynamic. Here, we established a microfluidic-based in vitro model of human bronchial epithelial cells in which cells are stationary, but nutrient supply is dynamic, and we used this system to evaluate cellular uptake of nanoparticles. The cells were maintained in fetal calf serum-free and bovine pituitary extract-free cell culture medium. BEAS-2B, an immortalized, non-tumorigenic human cell line, was used as a model and the cells were grown in a chip within a microfluidic device and were briefly infused with amorphous silica (SiO2) nanoparticles or polystyrene (PS) nanoparticles of similar primary sizes but with different densities. For comparison, tests were also performed using static, multi-well cultures. Cellular uptake of the fluorescently labeled particles was investigated by flow cytometry and confocal microscopy. Exposure under dynamic culture conditions resulted in higher cellular uptake of the PS nanoparticles when compared to static conditions, while uptake of SiO2 nanoparticles was similar in both settings. The present study has shown that it is feasible to grow human lung cells under completely animal-free conditions using a microfluidic-based device, and we have also found that cellular uptake of PS nanoparticles aka nanoplastics is highly dependent on culture conditions. Hence, traditional cell cultures may not accurately reflect the uptake of low-density particles, potentially leading to an underestimation of their cellular impact.


2006 ◽  
Vol 168 (5) ◽  
pp. 1452-1463 ◽  
Author(s):  
Ha-Van Nguyen ◽  
Jo-Lin Chen ◽  
Jenny Zhong ◽  
Kwang-Jin Kim ◽  
Edward D. Crandall ◽  
...  

1991 ◽  
Vol 125 (1) ◽  
pp. 101-108 ◽  
Author(s):  
Bertil G. Casslén ◽  
Michael J. K. Harper

Abstract. The aim of the study was to explore the possibility of using human endometrial epithelial cells in serum-free culture as a sensitive assay for hormonal effects on the human endometrium. Glands were isolated following enzymatic digestion of the endometrial tissue and plated on a collagen matrix. The epithelial cells were grown in either medium containing serum or in supplemented serum-free medium. No morphologic difference was found between cells grown in these two media for up to 5 days, using either light or scanning electron microscopy. Secretion of prostaglandin F2α (PGF2α) in response to estradiol was not lower in serum-free medium than in medium containing serum for the first 2 days of culture, whereas secretion declined after prolonged incubation in the serum-free medium. This response to estradiol was clearly dose-dependent, and it was further enhanced by addition of arachidonic acid, the precursor for prostaglandin synthesis, to the medium. Co-culture of endometrial stromal cells did not influence the secretion of PGF2α by epithelial cells. We conclude that the secretion of PGF2α from primary cultures of human endometrial epithelial cells grown on collagen in serum-free medium can be used for a limited period as an assay of estrogenic effects on the human endometrium.


2009 ◽  
Vol 13 (3) ◽  
pp. 175 ◽  
Author(s):  
Sung-Min Hwang ◽  
Na-Youn Koo ◽  
Se-Young Choi ◽  
Gae-Sig Chun ◽  
Joong-Soo Kim ◽  
...  

2007 ◽  
Vol 40 (1-2) ◽  
pp. 98-103 ◽  
Author(s):  
Megha S. Even ◽  
Chad B. Sandusky ◽  
Neal D. Barnard ◽  
Jehangir Mistry ◽  
Madhur K. Sinha

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