Past Issues: Assays and screens

October 2009

Distillery: Techniques

Prostate-specific antigen (PSA) assay for early detection of prostate cancer recurrence

Published online Oct. 29 2009; doi:10.1038/scibx.2009.1580

An assay for the immunological detection of PSA could help predict the recurrence of prostate cancer earlier than existing methods.

Tools

Biosynthetic snapshot

by Michael J. Haas, Senior Writer

Published online Oct. 22 2009; doi:10.1038/scibx.2009.1525

European researchers have developed a microarray technology that, without requiring any up-front genomic information, can aid in the identification and exploration of biosynthetic pathways in microorganisms that produce therapeutically active compounds.

Distillery: Techniques

General biosensor for use with various fluid clinical samples

Published online Oct. 22 2009; doi:10.1038/scibx.2009.1542

A biosensor that uses a protein capture and detection technique similar to what is used in a standard ELISA could help detect proteins in blood sera, saliva, urine and buffer.

Distillery: Techniques

Droplet-scale, digital microfluidic assay for estrogen

Published online Oct. 22 2009; doi:10.1038/scibx.2009.1543

An automated, digital microfluidic assay to determine estrogen concentrations in 1 μl samples of patient specimens could be useful for frequent testing of estrogen levels in indications such as cancer and infertility.

Distillery: Techniques

Microarray-based identification of metabolic enzymes and their functions

Published online Oct. 22 2009; doi:10.1038/scibx.2009.1544

A microarray-based technology could help identify metabolic enzymes in microorganisms that produce therapeutically active compounds.

Distillery: Techniques

Multiplexed electronic chip system for hybridization-based microRNA profiling

Published online Oct. 22 2009; doi:10.1038/scibx.2009.1545

A multiplexed electronic chip system for hybridization-based miRNA profiling could help analyze patient samples at higher speeds and sensitivity and could use smaller sample volumes than some other methods.

Cover Story

RNA direct FREE

by Gaspar Taroncher-Oldenburg, Executive Editor

Published online Oct. 8 2009; doi:10.1038/scibx.2009.1459

Researchers at Helicos BioSciences have developed a protocol for directly sequencing RNA. The company plans to commercialize the approach as a research tool on its HeliScope platform, but direct RNA sequencing for diagnostic and clinical purposes is still far in the future.

Distillery: Techniques

Direct RNA sequencing

Published online Oct. 1 2009; doi:10.1038/scibx.2009.1452

Direct sequencing of small amounts of short RNAs could be useful for single-cell gene expression analysis and RNA-based diagnostics.

Distillery: Techniques

Proteome-based identification of natural products and their biosynthetic pathways

Published online Oct. 1 2009; doi:10.1038/scibx.2009.1453

A proteome-based method to identify polyketides and their corresponding biosynthetic genes could speed the discovery of new compounds with therapeutic potential.