摘要:
The present invention discloses a method for protecting cycling or dividing stem cells from the cytotoxic effects of chemotherapeutic agents and radiation by administering prior to exposure to these agents, an effective amount of Stem Cell Inhibitory Factor as well as a composition useful therefore.
摘要:
A novel human cytokine, JE factor, and processes for producing it are disclosed. JE may be used in pharmaceutical preparations for stimulating and/or enhancing immune responsiveness and in wound healing and related tissue repair. containing the factor.
摘要:
This invention provides methods of monitoring the expression levels of a multiplicity of genes. The methods involve hybridizing a nucleic acid sample to a high density array of oligonucleotide probes where the high density array contains oligonucleotide probes complementary to subsequences of target nucleic acids in the nucleic acid sample. In one embodiment, the method involves providing a pool of target nucleic acids comprising RNA transcripts of one or more target genes, or nucleic acids derived from the RNA transcripts, hybridizing said pool of nucleic acids to an array of oligonucleotide probes immobilized on surface, where the array comprising more than 100 different oligonucleotides and each different oligonucleotide is localized in a predetermined region of the surface, the density of the different oligonucleotides is greater than about 60 different oligonucleotides per 1 cm2, and the olignucleotide probes are complementary to the RNA transcripts or nucleic acids derived from the RNA transcripts; and quantifying the hybridized nucleic acids in the array.
摘要:
Novel means and methods for analyzing hybridization data derived from hybridization assays between a target nucleic acid and differently sequenced polynucleotide probes involve selecting probe sets that define reference sequences for sequence signatures and deriving useful data about the nature of the target nucleic acid molecule based its hybridization to the probes. The methods are useful for determining whether the target contains a nucleic acid or polypeptide or sequence signature, whether the target encodes a member of a gene family, or whether the target is derived from one of any number of genes.
摘要:
Methods are disclosed for producing a sequence tag from a polynucleotide. In preferred embodiments, the method comprises (a) digesting the polynucleotide with a type II restriction enzyme to produce a first cohesive end; (b) providing a promoter-linker cassette comprising an RNA polymerase promoter, a restriction site for a type IIS restriction enzyme and a second cohesive end which is complementary to the first cohesive end produced by the type II restriction enzyme; (c) ligating the digested polynucleotide to the cassette by joining the first cohesive end and the second cohesive end; (d) digesting the ligated product of step (c) with the type Iis restriction enzyme; and (e) transcribing the resulting construct from the promoter thereby producing a sequence tagged polyribonucleotide.
摘要:
The invention described encompasses an isolated DNA sequence encoding all or a portion thereof of a cell surface receptor murine and human erythropoietin (hereinafter EPO-R), along with the isolated polypeptide expressed by the DNA sequence (i.e., isolated EPO-R). The invention also encompasses host cells containing the above-described DNA sequence, preferably, host cells which express the polypeptide encoded by the DNA sequence (EPO-R) at a significantly higher level than that produced by normal red blood cell precursors. The invention further encompasses DNA sequences encoding secreted forms of the human EPO-R and polypeptides corresponding thereto. The EPO-receptor in all of the disclosed forms can be used as models for designing drugs or in pharmaceutical compositions for treating anemias.