Taxonomic group: fungi / Ascomycota
(Phylum: Ascomycota)
NCBI PubMed ID: 8358393Journal NLM ID: 9311984Publisher: Pharmaceutical Society of Japan
Institutions: Tokyo College of Pharmacy, Japan
The immunopharmacological activities of a fungal (1→3)-β-D-glucan, OL-2, isolated from "Leiwan" Omphalia lapidescens were examined. Intraperitoneal (i.p.) administration of OL-2 to ICR mice induced a significant number of peritoneal exudate cells (PEC) and white blood cells over the period of a few days. Spleen cell numbers were also increased by i.p. administration of OL-2 at about a week. These changes reverted to the normal level within a month. Responses of spleen cells and bone marrow cells (BM) to colony stimulating factors (CSF) were augmented by OL-2 administration assessed by cell proliferation assay. Sera from OL-2 administered mice contained an increased concentration of colony stimulating activity. Gene expressions of interleukin-1 β, interleukin-6, and tumor necrosis factor alpha in the spleen were also increased. These results suggested the activation of hematopoietic responses, and would well relate to the incremental increase in PEC, white blood cell and spleen cell numbers. OL-2 also increased the serum concentration of fibronectin and complement component C-3. However, OL-2 did not show adjuvant activity to SRBC and antitumor activity against the solid form of Sarcoma 180 by i.p. administration. Yet, OL-2 did not interfere with the antitumor activity of SSG against the same tumor system. These facts suggested that OL-2 could enhance nonspecific host defense mechanisms by enhancing hematopoietic responses, but would not enhance or inhibit the specific immunity mediated by lymphocytes.(ABSTRACT TRUNCATED AT 250 WORDS)
Structure type: homopolymer ; n is large
Location inside paper: SSG
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
Related record ID(s): 103899, 106266, 110100, 110138, 111873, 111972, 111976, 118123, 125281, 125854, 126051, 130953, 130960, 130963, 139820, 139829, 141508, 149482
NCBI Taxonomy refs (TaxIDs): 5180Reference(s) to other database(s): GTC:G51056AN, GlycomeDB:
157, CCSD:
50422, CBank-STR:4225
Show glycosyltransferases
There is only one chemically distinct structure:
Found 
report error