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Volumn 299, Issue 5608, 2003, Pages 884-887

Design and chemical synthesis of a homogeneous polymer-modified erythropoiesis protein

(28)  Kochendoerfer, Gerd G a   Chen, Shiah Yun a   Mao, Feng a   Cressman, Sonya a,c   Traviglia, Stacey a,d   Shao, Haiyan a   Hunter, Christie L a,e   Low, Donald W a,f   Cagle, E Neil a   Carnevali, Maia a   Gueriguian, Vincent a   Keogh, Peter J a   Porter, Heather a   Stratton, Stephen M a   Con Wiedeke, M a   Wilken, Jill a   Tang, Jie a,g   Levy, Jay J a,h   Miranda, Les P a   Crnogorac, Milan M a   more..


Author keywords

[No Author keywords available]

Indexed keywords

AMINO ACIDS; MACROMOLECULES; MASS SPECTROMETRY; POLYPEPTIDES; SYNTHESIS (CHEMICAL);

EID: 0037423148     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1079085     Document Type: Article
Times cited : (293)

References (36)
  • 3
    • 0028891971 scopus 로고
    • T. Misaizu et al., Blood 86, 4097 (1995).
    • (1995) Blood , vol.86 , pp. 4097
    • Misaizu, T.1
  • 5
    • 0345891237 scopus 로고    scopus 로고
    • note
    • Glycoforms are proteins of identical protein backbone that carry sugars of varying number, complexity, and charge.
  • 16
    • 0021978919 scopus 로고
    • K. Jacobs et al., Nature 313, 806 (1985).
    • (1985) Nature , vol.313 , pp. 806
    • Jacobs, K.1
  • 18
    • 0347152393 scopus 로고    scopus 로고
    • note
    • Analogs that carried more or fewer negative charges on the precision polymer moiety or that had a lowermolecular-weight precision polymer attached exhibited significantly less potency and shorter duration of action when tested at similar doses (G. Kochendoerfer et al., unpublished observation).
  • 20
    • 0347152394 scopus 로고    scopus 로고
    • note
    • For a description of amino acid sequences and synthetic procedures, see supporting material on Science Online.
  • 21
    • 0345891235 scopus 로고    scopus 로고
    • note
    • 33 (acetamidomethyl).
  • 23
    • 0347782508 scopus 로고    scopus 로고
    • note
    • As designed, SEP had an artificially high apparent molecular mass. Measurement under nondenaturing conditions by size-exclusion chromatography gave an apparent effective hydrodynamic size of ∼330 kD, These data show that the precision polymer increases the apparent molecular mass of SEP, presumably because of preferential hydration of the polymer portion of SEP.
  • 24
    • 0346522060 scopus 로고    scopus 로고
    • note
    • SEP had a calculated mass of 50,821 daltons (average isotope composition).
  • 25
    • 0346522063 scopus 로고    scopus 로고
    • unpublished observations
    • F. Mao, unpublished observations.
    • Mao, F.1
  • 27
    • 0347782504 scopus 로고    scopus 로고
    • note
    • This is in stark contrast to both typical glycoproteins, such as Epo, and typical polymer-modified proteins, all of which are highly heterogeneous in both polymer composition and sites of attachment.
  • 28
    • 0027321052 scopus 로고
    • N. Komatsu et al., Blood 82, 456 (1993).
    • (1993) Blood , vol.82 , pp. 456
    • Komatsu, N.1
  • 29
    • 0347782505 scopus 로고    scopus 로고
    • note
    • 50 = 1.1 ng/ml) within the uncertainty of the experiment on the basis of protein backbone concentrations.
  • 33
    • 0347782502 scopus 로고    scopus 로고
    • note
    • This effect is most likely due to reduced renal clearance. In addition, absence of glycosylation prevents specific clearance of SEP by the asialoglycoprotein receptor that is predominantly responsible for the clearance of Epo (1, 2).
  • 36
    • 0347152392 scopus 로고    scopus 로고
    • note
    • We thank Midwest Biotech for the large-scale custom synthesis of Boc-Cys(Pic)-OH, S. J. Phillips for the coordination of the in vivo studies, and C. E. Green, Y. Freund, and L. Olson for help with the PK study.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.