Open AccessInhibitor of hematopoietic pluripotent stem cell proliferation: purification and determination of its structure.
Author(s) -
Maryse Lenfant,
Joanna WdzieczakBakala,
Éric Guittet,
JeanClaude Promé,
Dominique Sotty,
E Frindel
Publication year - 1989
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.86.3.779
Subject(s) - stem cell , induced pluripotent stem cell , haematopoiesis , tetrapeptide , chemistry , fast atom bombardment , microbiology and biotechnology , biochemistry , bone marrow , dna synthesis , dna , biology , mass spectrometry , peptide , embryonic stem cell , immunology , chromatography , gene
We report here a five-step purification procedure that led to the isolation from fetal calf bone marrow extract of a tetrapeptide, Ac-Ser-Asp-Lys-Pro (Mr 487), exerting a high inhibitory activity on the proliferation of hematopoietic pluripotent stem cells [defined here as spleen colony-forming units (CFU-S)]. The structure of this molecule was established from amino acid analysis, fast atom bombardment mass spectrometry, and 1H nuclear magnetic resonance spectral data. This structure was confirmed by comparison with the corresponding synthetic molecule, which presents identical physiochemical characteristics and biological properties. Natural and synthetic peptides administered to mice (at a dose of 100 ng per mouse) after one injection of cytosine arabinonucleoside prevent CFU-S recruitment into DNA synthesis.