scholarly journals Internalization of Non-permeant Materials into Cultured Mammalian Cells by Vortex-Stirring in the Presence of a High Molecular Weight Polyacrylic Acid: Direct Evidence of Internalization and Its Dependence on the Cell Lines.

1997 ◽  
Vol 20 (7) ◽  
pp. 727-731 ◽  
Author(s):  
Naoaki SHIMIZU ◽  
Yutaka KAWAZOE ◽  
Tadahide FURUNO ◽  
Mamoru NAKANISHI
1970 ◽  
Vol 46 (2) ◽  
pp. 245-251 ◽  
Author(s):  
Bland S. Montenecourt ◽  
Margaret E. Langsam ◽  
Donald T. Dubin

Discrete RNA fractions sedimenting slightly slower than 18s ribosomal RNA have been found in mitochondrial preparations from both hamster (BHK-21) and mouse (L-929) cells. This RNA could be separated into two components, present in approximately equimolar amounts, by prolonged zonal centrifugation or acrylamide gel electrophoresis. The hamster components had sedimentation constants averaging 16.8 and 13.4, and molecular weights (estimated by gel electrophoresis) averaging 0.74 and 0.42 x 106 daltons. Mixed labeling experiments showed that the mouse components sedimented and electrophoresed 3–6% more slowly than the corresponding hamster components. The RNA from both cell lines resembled mitochondrial ribosomal RNA from yeast and Neurospora in being GC poor, and in addition the larger and smaller components resembled each other in base composition. These results, taken with those of other recent studies, are compatible with the idea that our high molecular weight mitochondrial RNA is ribosomal; such RNA would then constitute a uniquely small size-class of ribosomal RNA.


1992 ◽  
Vol 23 (2) ◽  
pp. 122-132 ◽  
Author(s):  
Eric Bailly ◽  
Nicoles Bordes ◽  
Michel Bornens ◽  
Catherine Klotz

1998 ◽  
Vol 273 (2) ◽  
pp. 1044-1051 ◽  
Author(s):  
Takahiro Kamimoto ◽  
Yasuo Nagai ◽  
Hiroshi Onogi ◽  
Yoshinao Muro ◽  
Takashi Wakabayashi ◽  
...  

1983 ◽  
Vol 215 (3) ◽  
pp. 491-503 ◽  
Author(s):  
R A Childs ◽  
J Pennington ◽  
K Uemura ◽  
P Scudder ◽  
P N Goodfellow ◽  
...  

The carriers of the carbohydrate differentiation antigens I, i and SSEA-1 were investigated in embryonal carcinoma cell lines of mouse and differentiated cell lines derived from them. Glycoproteins were studied by immunostaining (‘Western blotting’) of total cell lysates and immunoprecipitation from lysates of galactose oxidase/NaB3H4-labelled cells; glycolipids were investigated by immunostaining of thin layer chromatograms. The antigenic activities detected by immunofluorescence of cell smears were reflected in the antigenicities of high-molecular-weight glycoproteins. These were polydisperse and markedly susceptible to digestion with endo-beta-galactosidase. Only the I antigen was detected on minor glycolipids. These observations indicate that glycoproteins rather than glycolipids are the major carriers of carbohydrate differentiation antigens I, i and SSEA-1 in the teratocarcinoma cell lines.


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