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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Adjuvant activity of purified peptidoglycan of Listeria monocytogenes in mice and guinea pigs.

The immunological properties of peptidoglycan (L-PG) purified from the cell wall skeleton (L-CWS) of Listeria monocytogenes strain EGD were investigated and compared with the properties of L-CWS. L-PG consisted of alanine, glutamic acid, alpha, epsilon-diaminopimelic acid, muramic acid, and glucosamine. L-PG showed potent adjuvant activities for circulating antibody formation and development of delayed-type hypersensitivity to bacterial alpha-amylase in vivo and for the primary immune response to sheep erythrocytes in vitro, as well as L-CWS. Both L-PG and L-CWS enhanced the generation of cell-mediated cytotoxicity in allogeneic mice and activated thioglycolate-elicited peritoneal macrophages and macrophage cell line RAW 264 to kill tumor target cells in vitro. We also found that L-PG acted on normal spleen cells as a mitogen. Both L-PG and L-CWS had tumor (Meth A)-suppressive and -regressive activities in syngeneic mice. Our results suggest that the L-PG moiety retains the adjuvant and antitumor activities of L-CWS.[1]


  1. Adjuvant activity of purified peptidoglycan of Listeria monocytogenes in mice and guinea pigs. Saiki, I., Kamisango, K., Tanio, Y., Okumura, H., Yamamura, Y., Azuma, I. Infect. Immun. (1982) [Pubmed]
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