Noninvasive Imaging of Protein Metabolic Labeling in Single Human Cells Using Stable Isotopes and Raman Microscopy

2008 ◽  
Vol 80 (24) ◽  
pp. 9576-9582 ◽  
Author(s):  
Henk-Jan van Manen ◽  
Aufried Lenferink ◽  
Cees Otto
2020 ◽  
Vol 21 (21) ◽  
pp. 7821
Author(s):  
Rovshan G. Sadygov

Cellular proteins are continuously degraded and synthesized. The turnover of proteins is essential to many cellular functions. Combined with metabolic labeling using stable isotopes, LC–MS estimates proteome dynamics in high-throughput and on a large scale. Modern mass spectrometers allow a range of instrumental settings to optimize experimental output for specific research goals. One such setting which affects the results for dynamic proteome studies is the mass resolution. The resolution is vital for distinguishing target species from co-eluting contaminants with close mass-to-charge ratios. However, for estimations of proteome dynamics from metabolic labeling with stable isotopes, the spectral accuracy is highly important. Studies examining the effects of increased mass resolutions (in modern mass spectrometers) on the proteome turnover output and accuracy have been lacking. Here, we use a publicly available heavy water labeling and mass spectral data sets of murine serum proteome (acquired on Orbitrap Fusion and Agilent 6530 QToF) to analyze the effect of mass resolution of the Orbitrap mass analyzer on the proteome dynamics estimation. Increased mass resolution affected the spectral accuracy and the number acquired tandem mass spectra.


2016 ◽  
Vol 128 (28) ◽  
pp. 8071-8074 ◽  
Author(s):  
Xing Jin ◽  
Soeun Kang ◽  
Shinya Tanaka ◽  
Sunghyouk Park

Oncogene ◽  
2003 ◽  
Vol 22 (36) ◽  
pp. 5562-5571 ◽  
Author(s):  
Razmik Mirzayans ◽  
Scott Pollock ◽  
April Scott ◽  
Cindy Q Gao ◽  
David Murray

2004 ◽  
Vol 76 (17) ◽  
pp. 4951-4959 ◽  
Author(s):  
Christine C. Wu ◽  
Michael J. MacCoss ◽  
Kathryn E. Howell ◽  
Dwight E. Matthews ◽  
John R. Yates

The Analyst ◽  
2018 ◽  
Vol 143 (18) ◽  
pp. 4495-4502 ◽  
Author(s):  
A. Enciso-Martinez ◽  
F. J. Timmermans ◽  
A. Nanou ◽  
L. W. M. M. Terstappen ◽  
C. Otto

Hybrid SEM–Raman microscopy to distinguish individual human cells.


1985 ◽  
Vol 5 (12) ◽  
pp. 3458-3466 ◽  
Author(s):  
J Woolford ◽  
V Rothwell ◽  
L Rohrschneider

The McDonough strain of feline sarcoma virus contains an oncogene called v-fms whose ultimate protein product (gp140v-fms) resembles a cell surface growth factor receptor. To identify and characterize the protein product of the proto-oncogene c-fms, antisera were prepared to the viral fms sequences and used to detect specific cross-reacting sequences in human choriocarcinoma cells (BeWo) known to express c-fms mRNA. Both tumor-bearing rat sera and a rabbit antiserum prepared to a segment of v-fms expressed in Escherichia coli detected a 140-kilodalton (kDa) glycoprotein in the BeWo cells. Tryptic fingerprint analysis of [35S]methionine-labeled proteins indicated that the viral fms proteins and the 140-kDa BeWo cell protein were highly related. This 140-kDa glycoprotein contained an associated tyrosine kinase activity in vitro and was labeled principally on serine after 32Pi metabolic labeling. These results suggest that the 140-kDa protein in BeWo cells is the protein product of the human c-fms proto-oncogene. This conclusion is supported by the finding that a similar protein is detectable only in other human cells that express c-fms mRNA. These other human cells include adherent monocytes and the cell line ML-1, which can be induced to differentiate along the monocyte-macrophage pathway. This is in agreement with current thought that the c-fms proto-oncogene product functions as the CSF-1 receptor specific to this pathway.


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