Taxonomic group: fungi / Ascomycota
(Phylum: Ascomycota)
Organ / tissue: cell wall
NCBI PubMed ID: 1320591Journal NLM ID: 7904799Publisher: Elsevier
Institutions: Department of Physiology, Armed Forces Radiobiology Research Institute, Bethesda, MD 20889
In order to compare both the actions of soluble glucan (glucan-F) and particulate glucan (glucan-P) on macrophages and the responsiveness of macrophages from C3H/HeJ and C3H/HeN mice to these immunomodulators, interleukin-1 (IL-1) levels, phagocytosis and superoxide production were monitored after an in vitro exposure to glucan-F or glucan-P. A 2 or 20 h exposure to either glucan preparation decreased the ability of both C3H/HeJ and C3H/HeN macrophages to ingest zymosan. In contrast, glucan-P, but not glucan-F, decreased (after a 20 h exposure) the uptake of both IgG opsonized erythrocytes and latex beads. Furthermore, glucan-P, but not glucan-F was as effective as zymosan (after a 1 h exposure) in inducing superoxide release by macrophages isolated from both C3H/HeN and C3H/HeJ mice. While the effects of glucan-P on PMA-induced superoxide release and IL-1 levels were similar in macrophages from C3H/HeJ and C3H/HeN mice, glucan-F was ineffective at enhancing PMA-induced superoxide release or increasing IL-1 levels in C3H/HeJ mice. Thus (1) the effects of glucan-P on phagocytosis of opsonized erythrocytes and latex beads are not mimicked by glucan-F and (2) while macrophages from C3H/HeJ mice respond normally (as compared with C3H/HeN macrophages) to glucan-P, they are hyporesponders to glucan-F. These findings indicate that the activation of macrophages by glucan-P involves different (or additional) pathways from those activated by glucan-F.
Structure type: homopolymer ; n is large
Trivial name: β-1,3-glucan, pachyman, curdlan, SSG
Compound class: EPS, glucan, cell wall glucn, cell wall glucan, cell wall glucoprotein
Contained glycoepitopes: IEDB_1397514,IEDB_142488,IEDB_146664,IEDB_153543,IEDB_158555,IEDB_161166,IEDB_2278476,IEDB_2278477,IEDB_558869,IEDB_857743,IEDB_983931,SB_192
Comments, role: Parent molecule: glucan-F, glucan-P;
Related record ID(s): 103899, 106266, 110076, 110100, 110138, 111873, 111972, 111976, 118123, 125281, 125854, 126051, 130953, 130963, 139820, 139829, 141508, 149482
NCBI Taxonomy refs (TaxIDs): 4932Reference(s) to other database(s): GTC:G51056AN, GlycomeDB:
157, CCSD:
50422, CBank-STR:4225
Show glycosyltransferases
There is only one chemically distinct structure:
Found 
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