Linked Life Data

2757794

Source:http://linkedlifedata.com/resource/pubmed/id/2757794

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1989-9-15
pubmed:abstractText
Lipopeptide analogues of the N-terminus of bacterial lipoprotein consisting of N-palmitoyl-S-[2,3-bis(palmitoyloxy)-(2RS)-propyl]-(R)-cysteine (Pam3Cys) attached to one to five further amino acids [Pam3Cys-Ser-Ser-Asn-Ala, Pam3Cys-Ser-(Lys)4, Pam3Cys-Ala-Gly, and Pam3Cys-Ser] were investigated for biological activity. In vitro, the compounds proved to be potent activators for Balb/c splenocytes as determined by proliferation assays. When given in vivo in combination with SRBC, Pam3Cys-Ser and Pam3Cys-Ala-Gly acted as immunoadjuvants enhancing the antigen specific IgM response after 7, and the IgG response after 14 days. In combination with dinitrophenylated bovine serum albumin (BSA(Dnp)), especially the amphiphilic and water-soluble lipohexapeptide Pam3Cys-Ser-(Lys)4 constituted a potent immune adjuvant. The lipopeptide was able to fully replace Freund's complete adjuvant (FCS) enhancing both anti-Dnp IgM and IgG in Balb/c mice. The hapten Dnp was also coupled directly--or via the spacer molecule 1,6-diaminohexane (HMD)--to the synthetic lipopeptides. The chemically defined low-molecular-mass conjugates obtained were capable of inducing anti-hapten-specific IgM and IgG without further adjuvants or carriers. The anti-hapten responses induced by these chemically uniform lipopeptide-hapten conjugates were, however, less pronounced than the response to the conventional heterogeneous hapten-protein conjugate BSA(Dnp), and only a weak boost effect was observed. Our results show that defined lipopeptides are novel immunoadjuvants either combined with or covalently linked to antigens or haptens.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0177-3593
pubmed:author
pubmed:issnType
Print
pubmed:volume
370
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
343-52
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Lipopeptide derivatives of bacterial lipoprotein constitute potent immune adjuvants combined with or covalently coupled to antigen or hapten.
pubmed:affiliation
Institut für Immunbiologie der Universität, Freiburg.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't