Mis-splicing Drives Loss of Function of p53 Point Mutation.

Background: Tp53 is the most commonly mutated gene in cancer. Canonical Tp53 DNA damage response pathways are well characterized and classically thought to underlie the tumor suppressive effect of Tp53. Challenging this dogma, mouse models have revealed that p53 driven apoptosis and cell cycle arrest are dispensable for tumor suppression.

Radiation-Induced Phosphorylation of a Prion-Like Domain Regulates Transformation by FUS-CHOP.

Chromosomal translocations generate oncogenic fusion proteins in approximately one-third of sarcomas, but how these proteins promote tumorigenesis is not well understood. Interestingly, some translocation-driven cancers exhibit dramatic clinical responses to therapy, such as radiotherapy, although the precise mechanism has not been elucidated. Here we reveal a molecular mechanism by which the fusion oncoprotein FUS-CHOP promotes tumor maintenance that also explains the remarkable sensitivity of myxoid liposarcomas to radiation therapy.

A Role for SMARCB1 in Synovial Sarcomagenesis Reveals That SS18-SSX Induces Canonical BAF Destruction.

Reduced protein levels of SMARCB1 (also known as BAF47, INI1, SNF5) have long been observed in synovial sarcoma. Here, we show that combined genetic loss with expression in mice synergized to produce aggressive tumors with histomorphology, transcriptomes, and genome-wide BAF-family complex distributions distinct from alone, indicating a defining role for SMARCB1 in synovial sarcoma. silencing alone in mesenchyme modeled epithelioid sarcomagenesis.

Genetic drivers and cells of origin in sarcomagenesis.

Sarcoma comprises a group of malignancies that includes over 100 individual disease entities. Type-specific genetic events initiate each tumor, occurring within a specific cellular context or circumstance. All sarcomas share a relationship with mesenchymal tissues of origin.

Gene Expression in Torn Rotator Cuff Tendons Determined by RNA Sequencing.

Background: Although the cause of rotator cuff tearing is likely multifactorial and a genetic predisposition has been proposed, the biochemical basis remains unknown.

Purpose: To determine gene expression profiles in torn rotator cuff tendon tissue through use of RNA sequencing.

Study Design: Controlled laboratory study.