OVERVIEW

The Cytogenetic Shared Resource provides essential expertise and cutting-edge equipment to scientists across the institution. This resource enables researchers to design, build, and utilize cell-based genetic assays, allowing them to directly visualize newly discovered genetic events contributing to cancer biology within individual cells. By observing the genome in its natural cellular environment, researchers can gain unique insights that might otherwise be overlooked. Our experienced cytogenetic staff collaborates with scientists throughout St. Jude, advancing research goals through their specialized knowledge and techniques.

Biorepository Overview
Three people in front of a computer screen

IMPACT

The Cytogenetic Shared Resource has contributed to numerous groundbreaking discoveries, including the initial cloning of the ALK gene, uncovering novel mechanisms of oncogene activation through analysis of 3D chromatin dynamics, and investigating the formation of transcription condensates in cancer. Our capabilities extend beyond traditional cytogenetics to include immunofluorescence protein staining combined with both RNA and DNA FISH, which can be applied to cells from both culture and tissue samples.

The resource is uniquely positioned to enhance understanding of transcription processes and identify potential intervention points to control individual gene expression. This work contributes significantly to advancing cancer research and potential treatment strategies at St. Jude. Through our collaborative approach and state-of-the-art techniques, we continue to play a crucial role in the institution's mission to combat childhood diseases.

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The cytogenetic core team has shown enormous research experience and are highly motivated to apply the most appropriate cutting-edge research tools to my research work. I really enjoy the close collaboration and science brainstorming with this team in the past years.

Chunliang Li, Assistant Member

Services and technologies

  • Standard G Band Karyotyping
  • Tumor cell lines, xenografts, somatic cell hybrids, targeted ES cell lines
  • Spectral Karyotyping (SKY)
  • RNA and DNA Fluorescence In Situ Hybridization (FISH)
  • IF Protein Staining
  • Sequential RNA/DNA FISH with or without IF
  • Custom FISH assays
  • Mouse Transgene Mapping
  • Gene Copy Number Analysis
  • Gene Disruption and Fusion Analysis

Instrumentation

  • Cytovision image analysis system with a cooled CCD camera for the analysis and archiving of FISH studies
  • ASI complete SKY/Cytogenetic System
  • Lambda stand-alone xenon arc lamp and power supply that includes a 175W ozone-free, calibration- and centration-free lamp and liquid light guide
  • Sutter Instruments automatic PC-controlled 10-position filter wheel
  • Nikon TI2 microscope

Director

photo of Steven Burden

Steven Burden, PhD

steven.burden@stjude.org

Dr. Steven Burden earned his PhD in Biomolecular Sciences from Boise State University, where his research was focused on the study and engineering of novel fluorogenic RNA structures. Leveraging the technological advancements from his doctoral studies, he founded a company in early 2019. The company's mission was to provide rapid and accurate diagnostics to individuals, irrespective of their socioeconomic background. Dr. Burden is driven to enhance the field with cutting-edge tools, particularly in genetically encodable fluorogenic RNA tracking, demonstrating his commitment to advancing the frontiers of research and diagnostics. 

Meet the team

group of people standing in a row in a lab

Steven Burden, PhD
Director

Virginia Valentine 
Lead-Researcher

Seth Staller, PhD
Lead-Researcher

Julia Wilbourne 
Lead-Researcher