Molecules and Cells

  • 제37권11호
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  • Pages.819-826
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  • 2014
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  • 1016-8478(pISSN)
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  • 0219-1032(eISSN)
한국분자세포생물학회 (Korean Society for Molecular and Cellular Biology)
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Structural Identification of Modified Amino Acids on the Interface between EPO and Its Receptor from EPO BRP, Human Recombinant Erythropoietin by LC/MS Analysis

  • Song, Kwang-Eun (Department of Stereoscopic Media, Korean German Institute of Technology) ;
  • Byeon, Jaehee (Department of Stereoscopic Media, Korean German Institute of Technology) ;
  • Moon, Dae-Bong (BIOnSYSTEMS, Inc., R&D Center) ;
  • Kim, Hyong-Ha (Center for Bioanalysis, Korea Research Institute of Standards and Science) ;
  • Choi, Yoo-Joo (Department of Newmedia, Korean German Institute of Technology) ;
  • Suh, Jung-Keun (Department of Newmedia, Korean German Institute of Technology)
  • 투고 : 2014.07.28
  • 심사 : 2014.09.04
  • 발행 : 2014.11.30
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초록

Protein modifications of recombinant pharmaceuticals have been observed both in vitro and in vivo. These modifications may result in lower efficacy, as well as bioavailability changes and antigenicity among the protein pharmaceuticals. Therefore, the contents of modification should be monitored for the quality and efficacy of protein pharmaceuticals. The interface of EPO and its receptor was visualized, and potential amino acids interacting on the interface were also listed. Two different types of modifications on the interface were identified in the preparation of rHu-EPO BRP. A UPLC/Q-TOF MS method was used to evaluate the modification at those variants. The modification of the oxidized variant was localized on the Met54 and the deamidated variants were localized on the Asn47 and Asn147. The extent of oxidation at Met54 was 3.0% and those of deamidation at Asn47 and Asn147 were 2.9% and 4.8%, respectively.

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참고문헌

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  2. Targeting EPO and EPO receptor pathways in anemia and dysregulated erythropoiesis vol.20, pp.3, 2016, https://doi.org/10.1517/14728222.2016.1090975
  3. Assessment for quantification of biopharmaceutical protein using a microvolume spectrometer on microfluidic slides vol.11, pp.1, 2017, https://doi.org/10.1007/s13206-016-1104-9
  4. Comprehensive Characterization ofN‐Glycosylation in Darbepoetin Alfa vol.40, pp.10, 2014, https://doi.org/10.1002/bkcs.11856
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  7. Anion exchange chromatography – Mass spectrometry for monitoring multiple quality attributes of erythropoietin biopharmaceuticals vol.1143, pp.None, 2014, https://doi.org/10.1016/j.aca.2020.11.027