Deciphering the human platelet sheddome

Fong KP, Barry C, Tran AN, Traxler EA, Wannemacher KM, Tang H-Y, Speicher KD, Blair IA, Speicher DW, Grosser T, Brass LF (2011)
Blood 117(1): e15-e26.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Autor*in
Fong, Karen P.; Barry, Colin; Tran, Anh N.; Traxler, Elizabeth A.; Wannemacher, Kenneth M.; Tang, Hsin-Yao; Speicher, Kaye D.; Blair, Ian A.; Speicher, David W.; Grosser, TiloUniBi ; Brass, Lawrence F.
Abstract / Bemerkung
Activated platelets shed surface proteins, potentially modifying platelet function as well as providing a source of bioactive fragments. Previous studies have identified several constituents of the platelet sheddome, but the full extent of shedding is unknown. Here we have taken a global approach, analyzing protein fragments in the supernate of activated platelets using mass spectroscopy and looking for proteins originating from platelet membranes. After removing plasma proteins and microparticles, 1048 proteins were identified, including 69 membrane proteins. Nearly all of the membrane proteins had been detected previously, but only 10 had been shown to be shed in platelets. The remaining 59 are candidates subject to confirmation. Based on spectral counts, protein representation in the sheddome varies considerably. As proof of principle, we validated one of the less frequently detected proteins, semaphorin 7A, which had not previously been identified in platelets. Surface expression, cleavage, and shedding of semaphorin 7A were demonstrated, as was its association with α-granules. Finally, cleavage of semaphorin 7A and 12 other proteins was substantially reduced by an inhibitor of ADAM17, a known sheddase. These results define a subset of membrane proteins as sheddome candidates, forming the basis for further studies examining the impact of ectodomain shedding on platelet function.
Erscheinungsjahr
2011
Zeitschriftentitel
Blood
Band
117
Ausgabe
1
Seite(n)
e15-e26
ISSN
0006-4971
eISSN
1528-0020
Page URI
https://pub.uni-bielefeld.de/record/2965328

Zitieren

Fong KP, Barry C, Tran AN, et al. Deciphering the human platelet sheddome. Blood. 2011;117(1):e15-e26.
Fong, K. P., Barry, C., Tran, A. N., Traxler, E. A., Wannemacher, K. M., Tang, H. - Y., Speicher, K. D., et al. (2011). Deciphering the human platelet sheddome. Blood, 117(1), e15-e26. https://doi.org/10.1182/blood-2010-05-283838
Fong, Karen P., Barry, Colin, Tran, Anh N., Traxler, Elizabeth A., Wannemacher, Kenneth M., Tang, Hsin-Yao, Speicher, Kaye D., et al. 2011. “Deciphering the human platelet sheddome”. Blood 117 (1): e15-e26.
Fong, K. P., Barry, C., Tran, A. N., Traxler, E. A., Wannemacher, K. M., Tang, H. - Y., Speicher, K. D., Blair, I. A., Speicher, D. W., Grosser, T., et al. (2011). Deciphering the human platelet sheddome. Blood 117, e15-e26.
Fong, K.P., et al., 2011. Deciphering the human platelet sheddome. Blood, 117(1), p e15-e26.
K.P. Fong, et al., “Deciphering the human platelet sheddome”, Blood, vol. 117, 2011, pp. e15-e26.
Fong, K.P., Barry, C., Tran, A.N., Traxler, E.A., Wannemacher, K.M., Tang, H.-Y., Speicher, K.D., Blair, I.A., Speicher, D.W., Grosser, T., Brass, L.F.: Deciphering the human platelet sheddome. Blood. 117, e15-e26 (2011).
Fong, Karen P., Barry, Colin, Tran, Anh N., Traxler, Elizabeth A., Wannemacher, Kenneth M., Tang, Hsin-Yao, Speicher, Kaye D., Blair, Ian A., Speicher, David W., Grosser, Tilo, and Brass, Lawrence F. “Deciphering the human platelet sheddome”. Blood 117.1 (2011): e15-e26.

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