Evaluation of the expression of the cationic peptide gene in various types of leukocytes

FEBS Letters

Nagaoka, Isao²  Yomogida, Shin²  Iwabuchi, Kazuhisa²  Someya, Akimasa²  Nakamura, Shinji¹  Yamashita, Tatsuhisa² 

[1] Division of Pathology, Juntendo University, School of Medicine, Hongo, Bunkyo-ku, Tokyo 113, Japan;Department of Biochemistry, Juntendo University, School of Medicine, Hongo, Bunkyo-ku, Tokyo 113, Japan

关键词: Cationic peptide;    Antimicrobial peptide;    Gene expression;    In situ hybridization;    Leukocyte;    Ginea pig;    CP;    cationic peptide;    SDS-PAGE;    sodium dodecyl sulfate-polyacrylamide gel electrophoresis;    kDa;    kilodaltons;    kb;    kilobases;   

DOI  :  10.1016/0014-5793(92)80459-T

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

To understand the regulation of the production or antimicrobial cationic peptide (CP) in leukocytes, expression of the CP gene was evaluated in various types of leukocytes using guinea pig neutrophils, monocytes, macrophages, cosinophils, lymphocytes and bone marrow cells. Acid-urea PAGE and SDS-PAGE/immunoblot analyses showed that CP was present in neutrophils and bone marrow cells, but not in other leukocytes. Northern blot and transcription run-off analyses revealed that only bone marrow cells expressed CP mRNA and transcribed the CP gene. Interestingly, in situ hybridization analysis using bone marrow cells demonstrated that CP mRNA was expressed in the neutrophil precursor cells, such as promyclocytes and myclocytes, but was not detected in the mature neutrophils and other bone marrow cells. Moreover, immunocytochemical study indicated flat CP present in the neutrophil precursor cells and the mature neutrophils in the bone marrow. Thus, the CP gene appears to be expressed during a limited period of neutrophil maturation, and CP is likely synthesized by the neutrophil precursor cells in the bone marrow.

【 授权许可】

Unknown