Preneoplastic stromal cells promote BRCA1-mediated breast tumorigenesis.

Women with germline BRCA1 mutations (BRCA1) have increased risk for hereditary breast cancer. Cancer initiation in BRCA1 is associated with premalignant changes in breast epithelium; however, the role of the epithelium-associated stromal niche during BRCA1-driven tumor initiation remains unclear. Here we show that the premalignant stromal niche promotes epithelial proliferation and mutant BRCA1-driven tumorigenesis in trans.

Patient-derived xenograft culture-transplant system for investigation of human breast cancer metastasis.

Metastasis is a fatal disease where research progress has been hindered by a lack of authentic experimental models. Here, we develop a 3D tumor sphere culture-transplant system that facilitates the growth and engineering of patient-derived xenograft (PDX) tumor cells for functional metastasis assays in vivo. Orthotopic transplantation and RNA sequencing (RNA-seq) analyses show that PDX tumor spheres maintain tumorigenic potential, and the molecular marker and global transcriptome signatures of native tumor cells.

Accessibility of postgraduate training program information to graduates from US doctor of pharmacy programs holding F-1 visas.

Purpose: To evaluate information provided by residency and fellowship programs to graduates of Accreditation Council for Pharmacy Education-accredited doctor of pharmacy programs holding F-1 visas who are seeking postgraduate training opportunities.

Methods: A 2-phase review of all US-based postgraduate year 1 (PGY1) residency and fellowship programs was conducted. In phase 1, program eligibility criteria were reviewed from the residency and fellowship directories published by the American Society of Health-System Pharmacists (ASHP) and American College of Clinical Pharmacy (ACCP).