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K562 cells: a source for embryonic globin chains.

K Bhaumik1

  • 1Department of Cell and Molecular Biology, Medical College of Georgia, Augusta 30912-2100.

Journal of Chromatography
|November 15, 1991
PubMed
Summary
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Researchers developed a method to produce large amounts of embryonic and fetal globin chains using chromatography. This technique aids in studying human hemoglobin switching and provides polypeptides for analysis.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Hematology

Background:

  • Human hemoglobin switching, particularly from embryonic to fetal forms, is crucial for understanding development.
  • Previous studies were limited by the lack of suitable models and reliable sources of globin chains.

Purpose of the Study:

  • To develop a method for large-scale production of embryonic and fetal globin chains.
  • To confirm the identity and utility of the produced globin chains for analytical and immunological applications.
  • To establish a model system for studying human hemoglobin switching using K562 cells.

Main Methods:

  • DEAE-cellulose chromatography and reversed-phase high-performance liquid chromatography (HPLC) were combined for globin chain purification.
  • Tryptic peptide mapping was employed to confirm the identity of the isolated globin chains.

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  • K562 cells were utilized for their capacity to induce differential embryonic and fetal hemoglobin synthesis.

    • Main Results:

    • A robust method was established for generating substantial quantities of embryonic and fetal globin chains.
    • The identity of the purified globin chains was confirmed through tryptic peptide mapping.
    • The method provides a reliable source of polypeptides for analytical and immunological studies.
    • K562 cells demonstrated potential as a model for studying hemoglobin switching, with hemoglobins effectively monitored.

    Conclusions:

    • The developed chromatographic method offers a reliable source of embryonic and fetal globin chains.
    • This technique facilitates research into human hemoglobin switching and related disorders.
    • K562 cells serve as a valuable model for investigating the complex process of hemoglobin switching.