Linked Life Data

6435857

Source:http://linkedlifedata.com/resource/pubmed/id/6435857

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1984-12-7
pubmed:abstractText
Administration of a low dose of L-PAM (0.75 mg/kg) to mice bearing a large SC MOPC-315 tumor and extensive metastases led to the development of augmented antitumor immune potential in their hitherto immunosuppressed spleen cells. Such drug-induced potentiation of antitumor immune responsiveness appeared by day 2 after chemotherapy, and it could not be further enhanced but was actually reduced by depletion of glass-adherent cells, a procedure which is effective in depleting the cells known to have inhibitory activity (i.e., macrophages and metastatic tumor cells). To establish that L-PAM can lead to selective in situ abrogation of the inhibitory effectiveness of the splenic macrophages and metastatic tumor cells, we demonstrated that incubation of immunosuppressed tumor-bearer spleen cells with a low concentration of L-PAM in vitro also resulted in augmented antitumor immune potential that could not be further augmented by depletion of glass-adherent cells. L-PAM-mediated enhancement of the antitumor immune potential of immunosuppressed tumor bearer spleen cells was due at least in part to the effects of the drug on the splenic metastatic tumor cells. Isolated tumor cells treated with a low concentration of L-PAM were not only devoid of inhibitory activity for the primary in vitro antitumor immune response by normal spleen cells, but actually manifested a strong immunostimulatory capacity. Thus, L-PAM given at a low dose enhances the development of potent antitumor immunity which brings about the eradication of a large tumorigenic load that remains after the drug has been cleared from the circulation.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0340-7004
pubmed:author
pubmed:issnType
Print
pubmed:volume
18
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
41-8
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1984
pubmed:articleTitle
Melphalan-mediated potentiation of antitumor immune responsiveness of immunosuppressed spleen cells from mice bearing a large MOPC-315 tumor.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't