摘要:
A depletion method to inhibit tumor growth includes introducing a viral expression system capable of expressing methioninase or a fusion protein containing methioninase into a tumor contained in a vertebrate subject or cells thereof. The fusion protein may contain a fluorescent protein to permit monitoring of the completeness of the depletion method. The fusion protein can be used in vivo as well as in vitro screening protocols which employ the viral expression system. The expression system includes control sequences and means to integrate the nucleotide sequence into the genome of a host cell for expression. The method may also include treating the cells with isolated methioninase and/or with a therapeutic cell. The depletion method can be with other known therapies, such as maintaining the animal having the tumor on a methionine depleted diet.
摘要:
A method is described to identify secreted proteins identified with stages of malignancy of cancer. The proteins are initially identified by trapping them with a fluorescent protein containing vector that can insert in any gene. The secreted proteins are initially identified by their fluorescence. Secreted proteins identifying tumors with specific degrees of malignancy are isolated to determine if they can serve as markers of cancer progression.
摘要:
Methods for inhibiting the growth of tumor cells by combination treatment with a selenium-containing prodrug and an enzyme for which it is a substrate are described. The treatment also enhances the effect of anti-tumor agents.
摘要:
Compositions and methods which ameliorate the virulence of bacterial infection are described wherein the active ingredient modulates transmethylation reactions in bacterial cells. Particularly useful compounds are inhibitors of S-adenosyl methionine synthetase (SAMS), of S-adenosyl homocysteine hydrolase (SAHH) and of transmethylases.
摘要:
Methods of obtaining faithful expression libraries from tissue samples comprise extraction of RNA from intact tissue cultured in three-dimensional sponge-gel based histocultures.
摘要:
A method is described to identify secreted proteins identified with stages of malignancy of cancer. The proteins are initially identified by trapping them with a fluorescent protein containing vector that can insert in any gene. The secreted proteins are initially identified by their fluorescence. Secreted proteins identifying tumors with specific degrees of malignancy are isolated to determine if they can serve as markers of cancer progression.
摘要:
The invention provides novel methods relating to SAM detection and production as well as a novel SAHH enzymatic activity for use in such methods. Additional methods, compositions, and kits relating to the novel SAHH are also provided.
摘要:
Immunocompromised rodents that have been modified to express a fluorescent protein in substantially all tissues are described. These rodents are useful as models for gene expression, tumor progression and angiogenesis. Also provided are model systems where heterologous tissues fluorescing in a first color are transplanted into hosts that have been modified to fluoresce in substantially all tissues with a second color.
摘要:
Living cells can be stably modified to emit different colors from the cytoplasm and nucleus, thus permitting analysis of the status of said cells and the effect of agents on said cells either by visual or instrumentally-aided observation. These observations may be made, if desired, in real time. In addition, rates of proliferation and drug sensitivities can be determined in vitro in real time by the use of cells modified to express a single fluorescent protein and observing fluorescence intensity as a function of time.