Identification and isolation of rat bone marrow-derived mast cells using the mast cell-specific monoclonal antibody AA4

M. C. Jamur, Ana Grodzki, A. N. Moreno, L. D.F.C. De Mello, M. V.D. Pastor, E. H. Berenstein, R. P. Siraganian, C. Oliver

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Previous studies of mast cell maturation, structure, and function have been hampered by the lack of mast cell-specific markers. In this study, using a well-characterized mast cell-specific monoclonal antibody, MAb AA4, mast cells from rat bone marrow in various stages of maturation were isolated and characterized. The very immature mast cells, which have not been previously described, contained few granules and would not be recognized as mast cells by standard cytological methods. Pure populations of mast cells were isolated from the bone marrow using MAb AA4-conjugated magnetic beads. The same stages of maturation were observed in the isolated mast cells as were seen in the unfractionated bone marrow. All of these cells were immunopositive for the α-subunit of FcεRI, IgE, and c-kit, confirming their identity as mast cells. By direct counting of immunolabled cells and by flow cytometry, approximately 2.4% of the cells in the bone marrow are mast cells. Staining with toluidine blue and berberine sulfate, as well as RT-PCR of the cells, indicates that these cells are connective tissue-type mast cells. The use of immunological methods for identification of mast cell precursors should facilitate the study of these cells.

Original languageEnglish (US)
Pages (from-to)219-228
Number of pages10
JournalJournal of Histochemistry and Cytochemistry
Volume49
Issue number2
DOIs
StatePublished - Jan 1 2001
Externally publishedYes

Fingerprint

Mast Cells
Bone Marrow
Monoclonal Antibodies
Berberine
Connective Tissue Cells
Tolonium Chloride
Bone Marrow Cells
Immunoglobulin E
Sulfates
Flow Cytometry
Staining and Labeling
Polymerase Chain Reaction

Keywords

  • Bone marrow
  • Gangliosides
  • Immunochemistry
  • Mast cells
  • Maturation
  • Rat

ASJC Scopus subject areas

  • Anatomy
  • Histology

Cite this

Identification and isolation of rat bone marrow-derived mast cells using the mast cell-specific monoclonal antibody AA4. / Jamur, M. C.; Grodzki, Ana; Moreno, A. N.; De Mello, L. D.F.C.; Pastor, M. V.D.; Berenstein, E. H.; Siraganian, R. P.; Oliver, C.

In: Journal of Histochemistry and Cytochemistry, Vol. 49, No. 2, 01.01.2001, p. 219-228.

Research output: Contribution to journalArticle

Jamur, M. C. ; Grodzki, Ana ; Moreno, A. N. ; De Mello, L. D.F.C. ; Pastor, M. V.D. ; Berenstein, E. H. ; Siraganian, R. P. ; Oliver, C. / Identification and isolation of rat bone marrow-derived mast cells using the mast cell-specific monoclonal antibody AA4. In: Journal of Histochemistry and Cytochemistry. 2001 ; Vol. 49, No. 2. pp. 219-228.
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