Identification of chondroitin sulfate E proteoglycans and heparin proteoglycans in the secretory granules of human lung mast cells

Journal Article · Fri Apr 01 00:00:00 EST 1988 · Proceedings of the National Academy of Sciences of the United States of America; (USA)

DOI:https://doi.org/10.1073/pnas.85.7.2284· OSTI ID:6940892

Stevens, R L; Austen, K F ^[1]; Fox, C C; Lichtenstein, L M ^[2]

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1. Brigham and Women's Hospital, Boston, MA (USA)
2. Johns Hopkins School of Medicine, Baltimore, MD (USA)

The predominant subclasses of mast cells in both the rat and the mouse can be distinguished from one another by their preferential synthesis of {sup 35}S-labeled proteoglycans that contain either heparin or oversulfated chondroitin sulfate glycosaminoglycans. Although ({sup 35}S)heparin proteoglycans have been isolated from human lung mast cells of 40-70% purity and from a skin biopsy specimen of a patient with urticaria pigmentosa, no highly sulfated chondroitin sulfate proteoglycan has been isolated from any enriched or highly purified population of human mast cells. The authors demonstrate that human lung mast cells of 96% purity incorporate ({sup 35}S)sulfate into separate heparin and chondroitin sulfate proteoglycans in an {approx}2:1 ratio. As assessed by HPLC of the chondroitinase ABC digests, the chondroitin ({sup 35}S)sulfate proteoglycans isolated from these human lung mast cells contain the same unusual chondroitin sulfate E disaccharide that is present in proteoglycans produced by interleukin 3-dependent mucosal-like mouse mast cells. Both the chondroitin ({sup 35}S)sulfate E proteoglycans and the ({sup 35}S)heparin proteoglycans were exocytosed from the ({sup 35}S)sulfate-labeled cells via perturbation of the IgE receptor, indicating that both types of {sup 35}S-labeled proteoglycans reside in the secretory granules of these human lung mast cells.

• OSTI ID: 6940892
• Journal Information: Proceedings of the National Academy of Sciences of the United States of America; (USA), Vol. 85:7; ISSN 0027-8424
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
GLUCOPROTEINS
BIOSYNTHESIS
LABELLED COMPOUNDS
MAST CELLS
IMMUNOLOGY
HEPARIN
LIQUID COLUMN CHROMATOGRAPHY
LUNGS
MAN
MICE
RATS
SKIN
SULFUR 35
AMINES
ANIMAL CELLS
ANIMALS
ANTICOAGULANTS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
CARBOHYDRATES
CHROMATOGRAPHY
CONNECTIVE TISSUE CELLS
DAYS LIVING RADIOISOTOPES
DRUGS
EVEN-ODD NUCLEI
GLYCOPROTEINS
HEMATOLOGIC AGENTS
ISOTOPES
LIGHT NUCLEI
MAMMALS
MUCOPOLYSACCHARIDES
NUCLEI
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
ORGANS
POLYSACCHARIDES
PRIMATES
PROTEINS
RADIOISOTOPES
RESPIRATORY SYSTEM
RODENTS
SACCHARIDES
SEPARATION PROCESSES
SOMATIC CELLS
SULFUR ISOTOPES
SYNTHESIS
VERTEBRATES
550201* - Biochemistry- Tracer Techniques