Abstract: Method of enriching specific cells from cellular samples are disclosed, comprising contacting in solution a cellular sample with affinity-tagged ligands (ATLs) each comprising a first ligand linked to an affinity tag, wherein the ligand selectively binds a cellular marker of the rare cells and the affinity tag can be selectively captured by a capture moiety, wherein the affinity tags do not comprise a magnetic particle; and flowing the sample through a microfluidic device comprising the capture moiety to selectively retain ATL-bound cells. Methods for enriching circulating tumor cells, and devices for enriching specific cells from cellular samples are also disclosed.

Abstract: The invention provides methods, compositions and kits for segregating a target nucleic acid from a mixed nucleic acid sample. The methods, compositions and kits comprise a non-processive endonuclease (e.g., a restriction enzyme) or an antibody that binds the target nucleic acid (e.g., has methylation specificity). The mixed nucleic acid sample can comprise prokaryotic and eukaryotic nucleic acid and/or nucleic acid from more than one prokaryotic or eukaryotic organisms.

Abstract: The invention provides methods, compositions and kits for segregating a target nucleic acid from a mixed nucleic acid sample. The methods, compositions and kits comprise a non-processive endonuclease (e.g., a restriction enzyme) or an antibody that binds the target nucleic acid (e.g., has methylation specificity). The mixed nucleic acid sample can comprise prokaryotic and eukaryotic nucleic acid and/or nucleic acid from more than one prokaryotic or eukaryotic organisms.

Abstract: The invention provides methods, compositions and kits for segregating a target nucleic acid from a mixed nucleic acid sample. The methods, compositions and kits comprise a non-processive endonuclease (e.g., a restriction enzyme) or an antibody that binds the target nucleic acid (e.g., has methylation specificity). The mixed nucleic acid sample can comprise prokaryotic and eukaryotic nucleic acid and/or nucleic acid from more than one prokaryotic or eukaryotic organisms.

Abstract: Method of enriching specific cells from cellular samples are disclosed, comprising contacting in solution a cellular sample with affinity-tagged ligands (ATLs) each comprising a first ligand linked to an affinity tag, wherein the ligand selectively binds a cellular marker of the rare cells and the affinity tag can be selectively captured by a capture moiety, wherein the affinity tags do not comprise a magnetic particle; and flowing the sample through a microfluidic device comprising the capture moiety to selectively retain ATL-bound cells. Methods for enriching circulating tumor cells, and devices for enriching specific cells from cellular samples are also disclosed.

Abstract: The invention provides methods, compositions and kits for segregating a target nucleic acid from a mixed nucleic acid sample. The methods, compositions and kits comprise a non-processive endonuclease (e.g., a restriction enzyme) or an antibody that binds the target nucleic acid (e.g., has methylation specificity). The mixed nucleic acid sample can comprise prokaryotic and eukaryotic nucleic acid and/or nucleic acid from more than one prokaryotic or eukaryotic organisms.

Abstract: The invention provides methods, compositions and kits for segregating a target nucleic acid from a mixed nucleic acid sample. The methods, compositions and kits comprise a non-processive endonuclease (e.g., a restriction enzyme) or an antibody that binds the target nucleic acid (e.g., has methylation specificity). The mixed nucleic acid sample can comprise prokaryotic and eukaryotic nucleic acid and/or nucleic acid from more than one prokaryotic or eukaryotic organisms.

Abstract: The invention provides methods, compositions and kits for segregating a target nucleic acid from a mixed nucleic acid sample. The methods, compositions and kits comprise a non-processive endonuclease (e.g., a restriction enzyme) or an antibody that binds the target nucleic acid (e.g., has methylation specificity). The mixed nucleic acid sample can comprise prokaryotic and eukaryotic nucleic acid and/or nucleic acid from more than one prokaryotic or eukaryotic organisms.

Abstract: Method of enriching specific cells from cellular samples are disclosed, comprising contacting in solution a cellular sample with affinity-tagged ligands (ATLs) each comprising a first ligand linked to an affinity tag, wherein the ligand selectively binds a cellular marker of the rare cells and the affinity tag can be selectively captured by a capture moiety, wherein the affinity tags do not comprise a magnetic particle; and flowing the sample through a microfluidic device comprising the capture moiety to selectively retain ATL-bound cells. Methods for enriching circulating tumor cells, and devices for enriching specific cells from cellular samples are also disclosed.

Abstract: The invention provides methods, compositions and kits for segregating a target nucleic acid from a mixed nucleic acid sample. The methods, compositions and kits comprise a non-processive endonuclease (e.g., a restriction enzyme) or an antibody that binds the target nucleic acid (e.g., has methylation specificity). The mixed nucleic acid sample can comprise prokaryotic and eukaryotic nucleic acid and/or nucleic acid from more than one prokaryotic or eukaryotic organisms.

Abstract: Method of enriching specific cells from cellular samples are disclosed, comprising contacting in solution a cellular sample with affinity-tagged ligands (ATLs) each comprising a first ligand linked to an affinity tag, wherein the ligand selectively binds a cellular marker of the rare cells and the affinity tag can be selectively captured by a capture moiety, wherein the affinity tags do not comprise a magnetic particle; and flowing the sample through a microfluidic device comprising the capture moiety to selectively retain ATL-bound cells. Methods for enriching circulating tumor cells, and devices for enriching specific cells from cellular samples are also disclosed.

Abstract: The invention provides methods, compositions and kits for segregating a target nucleic acid from a mixed nucleic acid sample. The methods, compositions and kits comprise a non-processive endonuclease (e.g., a restriction enzyme) or an antibody that binds the target nucleic acid (e.g., has methylation specificity). The mixed nucleic acid sample can comprise prokaryotic and eukaryotic nucleic acid and/or nucleic acid from more than one prokaryotic or eukaryotic organisms.

Abstract: Method of enriching specific cells from cellular samples are disclosed, comprising contacting in solution a cellular sample with affinity-tagged ligands (ATLs) each comprising a first ligand linked to an affinity tag, wherein the ligand selectively binds a cellular marker of the rare cells and the affinity tag can be selectively captured by a capture moiety, wherein the affinity tags do not comprise a magnetic particle; and flowing the sample through a microfluidic device comprising the capture moiety to selectively retain ATL-bound cells. Methods for enriching circulating tumor cells, and devices for enriching specific cells from cellular samples are also disclosed.

Abstract: Method of enriching specific cells from cellular samples are disclosed, comprising contacting in solution a cellular sample with affinity-tagged ligands (ATLs) each comprising a first ligand linked to an affinity tag, wherein the ligand selectively binds a cellular marker of the rare cells and the affinity tag can be selectively captured by a capture moiety, wherein the affinity tags do not comprise a magnetic particle; and flowing the sample through a microfluidic device comprising the capture moiety to selectively retain ATL-bound cells. Methods for enriching circulating tumor cells, and devices for enriching specific cells from cellular samples are also disclosed.

Abstract: A method for conducting a molecular analysis on target cells of a complex biological fluid can include the steps of reducing the complexity by selectively depleting at least a portion of non-target cells from the biological fluid, labeling target cells or non-target cells for identification, isolating target cells from non-target cells based on (i) a size, or (ii) a label, of the target cells or the non-target cells using a microfluidic sorting apparatus, and molecularly analyzing the target cells. Reducing can include separating the non-target cells from the biological fluid using a Magnetic Activated Cell Sorting apparatus or using magnetic beads that include a plurality of different antibodies including one or more of CD45, CD16 and 235a. Labeling can include using a label selected from fluorescent, colorimetric, magnetic and biochemical labels. The biological fluid can be selected from blood sputum, peritoneal fluid, tissue cell suspension, fine needle aspirates, fecal matter and cerebral spinal fluid.

Abstract: Method of enriching specific cells from cellular samples are disclosed, comprising contacting in solution a cellular sample with affinity-tagged ligands (ATLs) each comprising a first ligand linked to an affinity tag, wherein the ligand selectively binds a cellular marker of the rare cells and the affinity tag can be selectively captured by a capture moiety, wherein the affinity tags do not comprise a magnetic particle; and flowing the sample through a microfluidic device comprising the capture moiety to selectively retain ATL-bound cells. Methods for enriching circulating tumor cells, and devices for enriching specific cells from cellular samples are also disclosed.

Abstract: A method for identifying endogenous microbial proliferation genes for growth and viability is disclosed herein. The method involves exogenous nucleic acids that are used to conditionally produce antisense inhibitors of endogenous complementary mRNAs in a microorganism. Antisense fragments that result in lethality when expressed indicate that the endogenous gene is a proliferation gene. The method can also be used with sequences in sense orientation. The strategy can be used to identify new gene targets for novel antibiotics.

Abstract: The sequences of nucleic acids encoding proteins required for E. coli proliferation are disclosed. The nucleic acids can be used to express proteins or portions thereof, to obtain antibodies capable of specifically binding to the expressed proteins, and to use those expressed proteins as a screen to isolate candidate molecules for rational drug discovery programs. The nucleic acids can also be used to screen for homologous genes that are required for proliferation in microorganisms other than E. coli. The nucleic acids can also be used to design expression vectors and secretion vectors. The nucleic acids of the present invention can also be used in various assay systems to screen for proliferation required genes in other organisms as well as to screen for antimicrobial agents.

Abstract: The sequences of antisense nucleic acids which inhibit the proliferation of prokaryotes are disclosed. Cell-based assays which employ the antisense nucleic acids to identify and develop antibiotics are also disclosed. The antisense nucleic acids can also be used to identify proteins required for proliferation, express these proteins or portions thereof, obtain antibodies capable of specifically binding to the expressed proteins, and to use those expressed proteins as a screen to isolate candidate molecules for rational drug discovery programs. The nucleic acids can also be used to screen for homologous nucleic acids that are required for proliferation in cells other than Staphylococcus aureus, Salmonella typhimurium, Klebsiella pneumoniae, and Pseudomonas aeruginosa. The nucleic acids of the present invention can also be used in various assay systems to screen for proliferation required genes in other organisms.

Abstract: The sequences of nucleic acids encoding proteins required for E. coli proliferation are disclosed. The nucleic acids can be used to express proteins or portions thereof, to obtain antibodies capable of specifically binding to the expressed proteins, and to use those expressed proteins as a screen to isolate candidate molecules for rational drug discovery programs. The nucleic acids can also be used to screen for homologous genes that are required for proliferation in microorganisms other than E. Coli. The nucleic acids can also be used to design expression vectors and secretion vectors. The nucleic acids of the present invention can also be used in various assay systems to screen for proliferation required genes in other organisms as well as to screen for antimicrobial agents.