Abstract: Subjects at risk for developing cancer may be identified by obtaining samples of diagnostic cells from the subjects and determining a measure of cytotoxicity of the cells, the measure of cytotoxicity correlating negatively with the risk of developing cancer. The development of cancer may be prevented in subjects determined to be at risk for developing cancer by administering priming and activating agents to the subject, by increasing the expression of A1 adenosine receptors in cells of the subject, and increasing the affinity of cells of the subject for A1 adenosine receptor ligands. The preventative and diagnostic methods of the present invention may be carried out with kits and pharmaceutical liposomal formulations.

Abstract: Methods of treating and/or imaging tumors utilize A1 adenosine-receptor activated cells (such as monocytes and macrophages) are described. Activated cells may be administered systemically or locally, and may be radiolabelled to provide imaging and diagnostic functions. Macrophages resident in tissues may be primed and activated for use in treating and imaging tumors.

Abstract: Subjects at risk for developing cancer may be identified by obtaining samples of diagnostic cells from the subjects and determining a measure of cytotoxicity of the cells, the measure of cytotoxicity correlating negatively with the risk of developing cancer. The development of cancer may be prevented in subjects determined to be at risk for developing cancer by administering priming and activating agents to the subject, by increasing the expression of A1 adenosine receptors in cells of the subject, and increasing the affinity of cells of the subject for A1 adenosine receptor ligands. The preventative and diagnostic methods of the present invention may be carried out with kits and pharmaceutical liposomal formulations.

Abstract: A compound useful as an A1 adenosine receptor antagonist has the formula: wherein R1 is selected from the group consisting of C1-C8 alkyl; R2 is of the formula: R3 is of the formula: —(CH2)qC6H4—R7 R4 is of the formula:

Abstract: Methods of treating and/or imaging tumors utilize A.sub.1 adenosine-receptor activated cells (such as monocytes and macrophages) are described. Activated cells may be administered systemically or locally, and may be radiolabelled to provide imaging and diagnostic functions. Macrophages resident in tissues may be primed and activated for use in treating and imaging tumors.

Abstract: A compound useful as an A.sub.1 adenosine receptor antagonist has the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of C.sub.1 -C.sub.8 alkyl;R.sub.2 is of the formula: ##STR2## wherein n is an integer ranging from 1 to 8; R.sub.5 is H or (CH.sub.2).sub.p, wherein p is an integer ranging from 1 to 8; and R.sub.6 is H or (CH.sub.2).sub.m OH, wherein m is an integer ranging from 1 to 8;R.sub.3 is of the formula:--(CH.sub.2).sub.q C.sub.6 H.sub.4 --R.sub.7wherein q is an integer ranging from 1 to 8; and wherein R.sub.7 is selected from the group consisting of H, NH.sub.2, (CH.sub.2).sub.t OH, wherein t is an integer ranging from 1 to 8; and R.sub.9 COOH, wherein R.sub.9 is an alkyl or alkylidene group having 1 to 8 carbon atoms; andR.sub.4 is of the formula: ##STR3## wherein R.sub.8 is selected from the group consisting of H; NH.sub.2 ; (CH.sub.2).sub.s OH, wherein s is an integer ranging from 1 to 8; and R.sub.10 COOH, wherein R.sub.

Abstract: A compound useful as an A.sub.1 adenosine receptor antagonist has the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of C.sub.1 -C.sub.8 alkyl;R.sub.2 is of the formula: ##STR2## wherein n is an integer ranging from 1 to 8; R.sub.5 is H or (CH.sub.2).sub.p, wherein p is an integer ranging from 1 to 8; and R.sub.6 is H or (CH.sub.2).sub.m OH, wherein m is an integer ranging from 1 to 8;R.sub.3 is of the formula:--(CH.sub.2).sub.q C.sub.6 H.sub.4 --R.sub.7wherein q is an integer ranging from 1 to 8; and wherein R.sub.7 is selected from the group consisting of H, NH.sub.2, (CH.sub.2).sub.t OH, wherein t is an integer ranging from 1 to 8; and R.sub.9 COOH, wherein R.sub.9 is an alkyl or alkylidene group having 1 to 8 carbon atoms; andR.sub.4 is of the formula: ##STR3## wherein R.sub.8 is selected from the group consisting of H; NH.sub.2 ; (CH.sub.2).sub.t OH, wherein s is an integer ranging from 1 to 8; and R.sub.10 COOH, wherein R.sub.