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Research in NIAMS Labs

Updated April 12, 2013

Photo of Dr. John O'Shea, NIAMS Scientific Director

Welcome to NIAMS Labs from Dr. John O'Shea, NIAMS Scientific Director

As you will see, our program comprises scientists, physicians, nurses, trainees and administrators who work together to solve basic scientific problems and devise new treatments for arthritis, musculoskeletal and skin diseases.

chromatin binding profiles for the histone chaperone Spt6 (red), RNA polymerase II (green)
the histone demethylase KDM6A (gray), absence of the epigenetic mark H3K27me3 (blue) and presence of RNA transcripts (black) at the locus for the transcription factor Srf.

Clearing the Way to Make RNA in Muscle

The Sartorelli group has discovered that PolII, in conjunction with Spt6 and KDM6A, overcomes roadblocks like nucleosomes to transcribe genes in muscle cells. This cooperation between the three proteins controls developmental gene expression and cell differentiation.

Influenza virus particles with M1 layer

Fontana and Steven Show the Structural Consequences at Low pH for the Influenza A Matrix Protein

The scientists demonstrated that at low pH, the M1 matrix protein of influenza A virus, which plays multiple roles in virus assembly and infection, undergoes a conformational change prior to dissociating from the membrane.

RPA Accumulation during Class Switch Recombination

Casellas Group Develops a New DNA Damage Visualization Technique and Sheds Light on DNA Damage & Class Switching in Two Papers

The technique consists of detecting by immunoprecipitation and deep-sequencing recruitment of RPA to DNA breaks under conditions where homologous recombination is favored.
Cell Rep. 2013 Jan 1. doi:pii: S2211-1247(12)00431-7. 10.1016
Science. 2013 Jan 10.

Different dimer structures of HBV e-antigen

Dr. Steven Group Solves the Crystal Structure of Hepatitis B Virus e-antigen

The structure sheds light on a three-decades mystery and offers insight into how HBV e-antigen may establish immune tolerance for HBV core-antigen while evading its robust immunogenicity.
Structure . 2012 Dec 5. pii: S0969-2126(12)00414-5. doi: 10.1016/j.str.2012.10.017.