Plasma generated RONS in cell culture medium for in vitro studies of eukaryotic cells on Tissue Engineering scaffolds

2017 ◽  
Vol 14 (11) ◽  
pp. 1700014 ◽  
Author(s):  
Ilaria Trizio ◽  
Vito Rizzi ◽  
Roberto Gristina ◽  
Eloisa Sardella ◽  
Pinalysa Cosma ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Cell Culture ◽  
Culture Medium ◽  
In Vitro Studies ◽  
Eukaryotic Cells ◽  
Cell Culture Medium ◽  
Tissue Engineering Scaffolds

scholarly journals An Assessment of Cell Culture Plate Surface Chemistry for in Vitro Studies of Tissue Engineering Scaffolds

2015 ◽  
Vol 6 (4) ◽  
pp. 1054-1063 ◽  
Author(s):  
Alexander Röder ◽  
Elena García-Gareta ◽  
Christina Theodoropoulos ◽  
Nikola Ristovski ◽  
Keith Blackwood ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Cell Culture ◽  
Surface Chemistry ◽  
In Vitro Studies ◽  
Plate Surface ◽  
Tissue Engineering Scaffolds ◽  
Culture Plate

A Structure-Function Study of the Activity of Stem Cell Factor in Stimulating the Expansion of Cord Blood CD34+ Cells

Blood ◽  
2014 ◽  
Vol 124 (21) ◽  
pp. 3501-3501
Author(s):  
Bin Shen ◽  
Wenhong Jiang ◽  
Jie Fan ◽  
Wei Dai ◽  
Xinxin Ding ◽  
...  
Keyword(s):  
Cell Culture ◽  
Monoclonal Antibody ◽  
Stem Cell ◽  
Stem Cell Factor ◽  
Culture Medium ◽  
Cell Number ◽  
Full Length ◽  
Cell Culture Medium ◽  
Cd34 Cells

Abstract Stem cell factor is one of the most important growth factors for human hematopoietic stem cells (HSC). Recombinant human stem cell factor (rhSCF) can stimulate HSC expansion and regeneration in vitro, when it is used in combination with other cytokines like Flt-3L and TPO. However, the specific structural region(s) of the rhSCF protein that are critical for its function in HSC expansion are still unknown. Few studies have addressed this problem, to date. We have recently reported the production of a novel monoclonal antibody (named 23C8) against rhSCF, and the demonstration that 23C8 could inhibit the ability of rhSCF to enhance HSC expansion. Here, we report the identification of a short polypeptide from rhSCF that contains the epitope for binding to 23C8, and, like the full-length rhSCF, is able to stimulate the expansion of umbilical cord blood (UCB)-derived CD34+ cells. Twelve short polypeptides were designed and synthesized, which cover the full length of rhSCF, with 3-5 amino acids overlaps. 23C8 was collected from hybridoma cell culture medium and further purified using protein G affinity chromatography. ELISA was used to identify the polypeptide(s) that positively react with 23C8 among all the synthesized polypeptides. In addition, the effects of the synthetic polypeptides on human HSC expansion capacity were evaluated by supplementing the cell culture medium with 100 ng/ml of a given polypeptide. Total cell number and CD34+ cell number of each group were monitored on day 6. Our novel anti-SCF monoclonal antibody (23C8) partially blocked SCF’s function in human UCB CD34+ cell expansion. Of all the polypeptides analyzed, only one, named P0, corresponding to the SCF protein sequence at residues 40 to 57, was recognized by 23C8 during ELISA. P0, like the full-length rhSCF, enhanced expansion of CD34+ cells derived from human UCB. P0 addition increased the numbers of total nucleated cells and CD34+ cells by 10.58±0.86 and 4.63±0.43 folds, respectively. For comparison, the extents of increases in cell numbers in the vehicle control group was 3.15±0.99 fold (total nucleated cells) and 1.07±0.11 fold (CD34+ cells), respectively. Residues 40-57 of hrSCF comprise a critical functional region for its ability to enhance expansion of human UCB CD34+ cells in vitro. The short P0 peptide is a potential candidate for development as a synthetic substitute for rhSCF in clinic applications. Disclosures Jiang: Biopharmagen.corp: Employment. Jiang:Biopharmagen.corp: Employment.

Preliminary testing of silicone-urethane elastomers as substrates in human cell culture

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Malgorzata Lewandowska-Szumieł ◽  
Janusz Kozakiewicz ◽  
Piotr Mrówka ◽  
Agnieszka Jurkowska ◽  
Edyta Sienkiewicz-Łatka ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Cell Culture ◽  
Blood Platelets ◽  
Human Fibroblasts ◽  
Medical Implants ◽  
Tissue Engineering Scaffolds ◽  
Xtt Assay ◽  
In Vitro Biocompatibility ◽  
Different Types

AbstractSilicone-urethanes, polymers combining the characteristics of two widely used biomaterials, i.e. polyurethanes and silicones, are highly valued in many applications, including medical implants. To assess properties of these materials in contact with living cells, a set of different silicone-urethane materials, candidates for tissue engineering scaffolds, was synthesized and characterized. Two different oligomeric siloxane diols: Tegomer-2111 (Teg) and KF-6001 (KF), and two different types of diisocyanate, MDI and IPDI, were used in synthesis. Blood platelets adhesion to surfaces of selected materials showed a higher thrombogenicity of material based on Teg. Human fibroblasts were used in in vitro biocompatibility tests. The viability of cells cultured on silicone-urethanes was tested by XTT assay. Teg-based silicone-urethanes showed a significantly higher biocompatibility than those based on KF. Materials based on MDI compared to IPDI were found to be significantly more favoured by cells, not necessarily due to the type of diisocyanate but maybe also because of the necessity of using potentially toxic catalyst which accompanies the use of IPDI. Our studies indicate that silicone-urethanes are potent materials for tissue engineering products development. On the basis of the observations performed in cell culture, Tegomer- 2111 as oligomeric siloxane diol and MDI as diisocyanate are recommended as starting materials for silicone-urethane scaffolds synthesis.

scholarly journals Exposure Setup and Dosimetry for a Study on Effects of Mobile Communication Signals on Human Hematopoietic Stem Cells in vitro

2017 ◽  
Vol 15 ◽  
pp. 207-213
Author(s):  
Martina Rohland ◽  
Kai Baaske ◽  
Katharina Gläser ◽  
Henning Hintzsche ◽  
Helga Stopper ◽  
...  
Keyword(s):  
Stem Cells ◽  
Cell Culture ◽  
Hematopoietic Stem Cells ◽  
Mobile Communication ◽  
Culture Medium ◽  
Cell Culture Medium ◽  
Scattering Parameter ◽  
Hematopoietic Stem ◽  
Communication Signals

Abstract. In this paper we describe the design of an exposure setup used to study possible non-thermal effects due to the exposure of human hematopoietic stem cells to GSM, UMTS and LTE mobile communication signals. The experiments are performed under fully blinded conditions in a TEM waveguide located inside an incubator to achieve defined environmental conditions as required for the living cells. Chamber slides containing the cells in culture medium are placed on the septum of the waveguide. The environmental and exposure parameters such as signal power, temperatures, relative humidity and CO2 content of the surrounding atmosphere are monitored permanently during the exposure experiment. The power of the exposure signals required to achieve specific absorption rates of 0.5, 1, 2 and 4 W kg−1 are determined by numerical calculation of the field distribution inside the cell culture medium at 900 MHz (GSM), 1950 MHz (UMTS) and 2535 MHz (LTE). The dosimetry is verified both with scattering parameter measurements on the waveguide with and without containers filled with cell culture medium and with temperature measurements with non-metallic probes in separate heating experiments.

scholarly journals COMPOSITION AND FUNCTIONS OF EXTRACELLULAR PROTEINS IN LEAF APOPLAST AND IN VITRO CELL CULTURE MEDIUM OF TARTARY BUCKWHEAT

2020 ◽  
Author(s):  
Н.И. Румянцева ◽  
A.И. Валиева ◽  
A.Н. Акулов ◽  
A.В. Лайков ◽  
Ю.A. Костюкова ◽  
...  
Keyword(s):  
Cell Culture ◽  
Culture Medium ◽  
Extracellular Proteins ◽  
Tartary Buckwheat ◽  
Cell Culture Medium ◽  
In Vitro Cell Culture ◽  
Leaf Apoplast
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