摘要:
The invention provides novel inhibitors of protein translation initiation and inhibitors of eIF4F activity that can increase chemosensitivity or diminish or reverse chemoresistance in growth transformed cells and thereby reduce hyperproliferative conditions, such as cancer progression, in select patient populations having particular tumor genotypes. The invention also provides methods which target translation initiation controls in growth-transformed cells, such as tumor subtypes with altered expression of a gene activity, including the human akt, bcl-2, eIF4E, eIF4A or PTEN activities, to restore drug sensitivity in vivo in a genotype selective manner. In one aspect, the inhibitors of translation initiation of the invention are rocaglates, i.e., cyclopenta[b]benzofurons, which increases chemosensitivity or diminishes or reverses chemoresistance either alone or in combination, additively or synergistically, with other agents that alter growth or death. Preferably, the rocaglate is silvestrol, which is used alone or in combination with doxorubicin to reverses chemoresistance in PTEN-deficient lymphomas or eIF4E-over-expressing lymphomas and to promote cancer remission.
摘要:
The present invention relates to a anti-proliferative target for designing chemotherapeutic agents, which comprises a EIF4A protein having an amino acid sequence, as defined in claim 1.
摘要:
A method for identifying suitable targets for antibacterial agents based on identifying targets of bacteriophage-encoded proteins is described. Also described are compositions useful in the identification methods and in inhibiting bacterial growth, and methods for preparing and using such compositions.
摘要:
This invention relates to newly identified polynucleotides and polypeptides, and their production and uses, as well as their variants, agonists and antagonists, and their uses. In particular, the invention relates to polynucleotides and polypeptides of a Staphylococcus aureus (S. aureus) DnaI related protein, as well as its variants, hereinafter referred to as “S. aureus DnaI”, “S. aureus DnaI polypeptide(s)”, and “S. aureus dnaI polynucleotides” as the case may be. Also, the invention relates to a specific interaction between the S. aureus DnaI related protein and a growth-inhibitory protein encoded by the S. aureus bacteriophage 77 genome. The phage ORF product interacts with the S. aureus DnaI polypeptide, and the invention contemplates use of this interaction target site for the basis of a drug screening assay. In addition, the invention relates to polynucleotides and polypeptides of a protein complex containing S. aureus DnaI and DnaC related proteins, as well as their variants.
摘要:
The Wilms' tumor gene associated with 11p3 locus on the human chromosome, as well as a method of analyzing cells for the gene is described and characterized. The gene encodes a transcription unit approximately 50 kb in size and a mRNA of approximately 3 kb, which is expressed in predominantly in kidney and gonadal tissue. The gene is alternative spliced producing four very similar mRNA transcripts. The polypeptides encoded by the Wilms' tumor DNA includes four “zinc fingers” and a region rich in proline and glutamine, suggesting that the polypeptide has a role in transcription regulation.
摘要:
The present invention relates to a anti-proliferative target for designing chemotherapeutic agents, which comprises a EIF4A protein having an amino acid sequence, as defined in claim 1.
摘要:
A method for identifying suitable targets for antibacterial agents based on identifying targets of bacteriophage-encoded proteins is described. Also described are compositions useful in the identification methods and in inhibiting bacterial growth, and methods for preparing and using such compositions.
摘要:
The Wilms' tumor gene associated with the 11p13 locus on the human chromosome, as well as a method of analyzing cells for the gene is described and characterized. The gene encodes a transcription unit approximately 50 kb in size and a mRNA of approximately 3 kb, which is expressed in a limited number of cell types (e.g., predominantly kidney cells and ja subset of hematopoietic cells). The polypeptide encoded by the Wilms' tumor DNA includes four "zinc fingers" and a region rich in proline and glutamine, suggesting that the polypeptide has a role in transcription regulation.
摘要:
The invention relates to bacterial genes and proteins that are implicated in the process of DNA replication and also to bacteriophage genes and their protein products that interact with bacterial proteins involved in DNA replication. More particularly, the invention relates to compositions and methods involving an essential Staphylococcus aureus gene and its encoded protein STAAU_R9. In addition, the invention relates to screening assays to identify compounds which modulate the level and/or activity of STAAU_R9 and to such compounds.
摘要:
The invention provides the components of in vivo and in vitro systems and methods which use them to study the effects of altered expression of a gene activity, such as the human akt, bcl-2, eIF4E or PTEN activities, on the descendants of stem cells that have been engineered to give rise to hematopoietic tumorigenic or tumor cells, such as lymphomas, with a high frequency. The present invention provides vectors, cells and mammals, and methods which in part depend on such products, useful for understanding tumorigenesis and its treatments, and in particular, for identifying and studying inhibitors and activators associated with tumor cell growth and growth inhibition, cell death through apoptotic pathways, and changes in apoptotic pathway components that affect drug sensitivity and resistance in tumorigenic cells. Methods for identifying molecular targets for drug screening, identifying interacting gene activities, for identifying therapeutic treatments and for identifying candidates for new therapeutic treatments are provided.