Establishment of a cell line of human endometrial adenocarcinoma in vitro

1972 ◽  
Vol 114 (8) ◽  
pp. 1012-1019 ◽  
Author(s):  
Hiroyuki Kuramoto ◽  
Shozo Tamura ◽  
Yukio Notake
Keyword(s):  
Cell Line ◽  
Endometrial Adenocarcinoma ◽  
A Cell

Production of Human Chorionic Gonadotropin In Vitro by a Cell Line Derived From a Carcinoma of the Lung2

1973 ◽  
Vol 50 (3) ◽  
pp. 669-674 ◽  
Author(s):  
Alan S. Robson ◽  
Saul W. Rosen ◽  
Armen H. Tashjian ◽  
Bruce D. Weintraub
Keyword(s):  
Cell Line ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
A Cell

scholarly journals The effect of strontium ranelate on titanium particle-induced periprosthetic osteolysis regulated by WNT/β-catenin signaling in vivo and in vitro

2021 ◽  
Vol 41 (1) ◽  
Author(s):  
Bolun Wang ◽  
Haohui Guo ◽  
Tianxiang Geng ◽  
Kening Sun ◽  
Liang Zhang ◽  
...  
Keyword(s):  
Bone Resorption ◽  
Aseptic Loosening ◽  
Cell Line ◽  
Conditioned Medium ◽  
Strontium Ranelate ◽  
Cell Model ◽  
Periprosthetic Osteolysis ◽  
A Cell

Abstract Aseptic loosening following periprosthetic osteolysis is the primary complication that limits the lifetime of total joint arthroplasty (TJA). The wear particles trigger a chronic inflammation response in the periprosthetic tissue and turn over the bone balance to bone resorption. The present study aimed to investigate the possible effect and mechanism of strontium ranelate (SR), a clinically safe drug for osteoporosis, on particle-induced periprosthetic osteolysis. Thirty-six female C57BL/6j mice underwent tibial Ti-nail implantation to establish an animal model of aseptic loosening. After 12 weeks, micro-CT results showed that strontium ranelate could inhibit periprosthetic bone resorption. In vitro, Ti particles were used to stimulate RAW264.7 cell line to collect conditioned medium, and co-culture MC3T3-E1 cell line with conditioned medium to establish a cell model of aseptic loosening. The results of alkaline phosphatase (ALP) detection, immunofluorescence, and flow cytometry demonstrated that strontium ranelate could regulate the expression of OPG/RANKL, promote differentiation and mineralization, and inhibit apoptosis in osteoblasts. Moreover, we revealed that SR’s exerted its therapeutic effect by down-regulating sclerostin, thereby activating the Wnt/β-catenin signal pathway. Therefore, this research suggests that strontium ranelate could be a potential drug for the prevention and treatment of particle-induced aseptic loosening post-TJA.

scholarly journals Motility patterns of Trypanosoma cruzi trypomastigotes correlate with the efficiency of parasite invasion in vitro

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Jorge A. Arias-del-Angel ◽  
Jesús Santana-Solano ◽  
Moisés Santillán ◽  
Rebeca G. Manning-Cela
Keyword(s):  
Trypanosoma Cruzi ◽  
Cell Line ◽  
Mammalian Cells ◽  
Dependent Manner ◽  
Parasite Invasion ◽  
Mammalian Cell Cultures ◽  
A Cell ◽  
Parasite Replication ◽  
Parasite Motility

Abstract Numerous works have demonstrated that trypanosomatid motility is relevant for parasite replication and sensitivity. Nonetheless, although some findings indirectly suggest that motility also plays an important role during infection, this has not been extensively investigated. This work is aimed at partially filling this void for the case of Trypanosoma cruzi. After recording swimming T. cruzi trypomastigotes (CL Brener strain) and recovering their individual trajectories, we statistically analyzed parasite motility patterns. We did this with parasites that swim alone or above monolayer cultures of different cell lines. Our results indicate that T. cruzi trypomastigotes change their motility patterns when they are in the presence of mammalian cells, in a cell-line dependent manner. We further performed infection experiments in which each of the mammalian cell cultures were incubated for 2 h together with trypomastigotes, and measured the corresponding invasion efficiency. Not only this parameter varied from cell line to cell line, but it resulted to be positively correlated with the corresponding intensity of the motility pattern changes. Together, these results suggest that T. cruzi trypomastigotes are capable of sensing the presence of mammalian cells and of changing their motility patterns accordingly, and that this might increase their invasion efficiency.

scholarly journals Cytotoxicity of a cell-reactive immunotoxin containing ricin A chain is potentiated by an anti-immunotoxin containing ricin B chain.

1984 ◽  
Vol 160 (1) ◽  
pp. 341-346 ◽  
Author(s):  
E S Vitetta ◽  
R J Fulton ◽  
J W Uhr
Keyword(s):  
Cell Surface ◽  
Cell Line ◽  
Ricin A Chain ◽  
Daudi Cell ◽  
A Cell ◽  
A Chain ◽  
Ricin A

In vitro killing of the human Daudi cell line by either univalent [F(ab')] or divalent (IgG) forms of rabbit anti-human Ig (RAHIg) coupled to ricin A chain can be specifically potentiated by a "piggyback" treatment with ricin B chain coupled to goat anti-rabbit Ig (GARIg). When cells are treated with univalent immunotoxin (IT) [F(ab') RAHIg-A] and then cultured, IT can be detected on the cell surface for at least 5 h, since GARIg-B can still enhance killing at this time. These results provide a strategy for in vivo use of A chain- and B chain-containing IT.

scholarly journals Heterocyclic Compounds That Inhibit Rev-RRE Function and Human Immunodeficiency Virus Type 1 Replication

2008 ◽  
Vol 52 (9) ◽  
pp. 3169-3179 ◽  
Author(s):  
Deidra Shuck-Lee ◽  
Fei Fei Chen ◽  
Ryan Willard ◽  
Sharmila Raman ◽  
Roger Ptak ◽  
...  
Keyword(s):  
Human Immunodeficiency Virus ◽  
Life Cycle ◽  
Cell Line ◽  
Particle Production ◽  
Screening Assay ◽  
Rev Response Element ◽  
Immunodeficiency Virus ◽  
A Cell ◽  
Viruslike Particles

ABSTRACT A cell-based screening assay was performed to identify compounds that inhibited the postintegration stage of the human immunodeficiency virus (HIV) life cycle. This assay utilized a cell line that contains the HIV gag and pol genes expressed in a Rev-dependent fashion. The cell line produces about 10 to 15 ng of p24 per milliliter of medium over a 24-h period in the form of viruslike particles. Any compound that inhibits a postintegration step in the HIV life cycle scores in this assay by decreasing particle production. Forty thousand compounds were screened, and 192 compounds were selected from the original screen because they showed more than 50% inhibition at a 10 μM concentration. The cumulative evidence presented in this study strongly suggests that 2 of the 192 compounds work as inhibitors of HIV Rev function. This was determined by a variety of cell-based assays, although the compounds do not interfere with Rev-RRE (Rev response element) binding in vitro. Both compounds inhibit replication of the lab isolate NL4-3 as well as an HIV primary isolate from Brazil (93BR021) and thus are promising leads as therapeutic candidates that target HIV replication through inhibition of Rev function.

scholarly journals MUTANTS OF NONPRODUCER CELL LINES TRANSFORMED BY MURINE SARCOMA VIRUS

1973 ◽  
Vol 138 (2) ◽  
pp. 364-372 ◽  
Author(s):  
M. Hatanaka ◽  
R. Klein ◽  
C. W. Long ◽  
R. Gilden
Keyword(s):  
Cell Line ◽  
Cell Lines ◽  
In Vitro Cultivation ◽  
Murine Sarcoma Virus ◽  
Sarcoma Virus ◽  
A Cell ◽  
Phenotypic Reversion

Tumorigenic and nontumorigenic mutants induced by a single 5'-bromodeoxyuridine (BrdU) treatment of a nonproducer (NP) tumorigenic cell line were isolated and characterized. Among the cloned derivatives were examples of virus-free and sarcoma virus-producing cell lines. Oncogenicity did not correlate with production of virus or ease of rescue of the sarcoma genome. All lines, including nononcogenic derivatives, retained the sarcoma genome. Phenotypic reversion of some cell mutants was observed after in vivo inoculation or long term in vitro cultivation. The M-50T cell line, obtained from a tumor induced by M-50 cells, had a sarcoma genome rescuable by direct superinfection; this was only achieved with parental M-50 cells by a cell fusion rescue technique. The M-43-2T cell, obtained from a single small static tumor induced by otherwise nononcogenic M-43-2 cells, shed sarcoma virus and became tumorigenic. M-58-4-48 became tumorigenic after passage 48 of the M-58-4 line, which was originally nontumorigenic. These observations of phenotypic reversion demonstrate that the presence of the sarcoma gene in cells is an essential but not sufficient condition of tumorigenesis.

scholarly journals Adhesion, Invasion, and Translocation Characteristics of Listeria monocytogenes Serotypes in Caco-2 Cell and Mouse Models

2003 ◽  
Vol 69 (6) ◽  
pp. 3640-3645 ◽  
Author(s):  
Ziad W. Jaradat ◽  
Arun K. Bhunia
Keyword(s):  
Listeria Monocytogenes ◽  
Mouse Model ◽  
Cell Line ◽  
Mouse Bioassay ◽  
Adhesion Properties ◽  
Culture Model ◽  
A Cell ◽  
In Vitro Adhesion ◽  
The Brain

ABSTRACT Adhesion is a crucial first step in Listeria monocytogenes pathogenesis. In this study, we examined how the adhesion properties of serotypes correlate with their invasion efficiencies in a cell culture model (Caco-2) and in a mouse model. Adhesion characteristics of all 13 serotypes of L. monocytogenes (25 strains) were analyzed, which yielded three distinct groups (P < 0.05) with high-, medium-, and low-level-adhesion profiles. The efficiency of these strains in invading the Caco-2 cell line was analyzed, which produced two groups; however, the overall correlation (R 2) was only 0.1236. In the mouse bioassay, all selected strains, irrespective of their adhesion profiles, translocated to the liver and the spleen with almost equal frequencies that did not show any clear relationship with adhesion profiles. However, the serotypes with increased adhesion showed a slightly increased translocation to the brain (R 2 = 0.3371). Collectively, these results indicate that an in vitro adhesion profile might not be an accurate assessment of a strain's ability to invade a cultured cell line or organs or tissues in a mouse model.

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