Combining Laboratory Techniques Yields Wealth of Information About Deadly Brain Tumors

Clinicians from the Johns Hopkins Kimmel Cancer Center and four other institutions have demonstrated that doctors can gain a wealth of knowledge about a patient’s cancer by using multiple laboratory techniques to study tumor tissue taken from needle biopsies of glioblastoma, a highly aggressive form of brain cancer.
Brain Tumors: Clinicians from the Johns Hopkins Kimmel Cancer Center and four other institutions have demonstrated that doctors can gain a wealth [Newswise]
Brain Tumors: Clinicians from the Johns Hopkins Kimmel Cancer Center and four other institutions have demonstrated that doctors can gain a wealth [Newswise]
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Brain Tumors: Clinicians from the Johns Hopkins Kimmel Cancer Center and four other institutions have demonstrated that doctors can gain a wealth of knowledge about a patient’s cancer by using multiple laboratory techniques to study tumor tissue taken from needle biopsies of glioblastoma, a highly aggressive form of brain cancer.

The work, funded by Break Through Cancer and published in the April 28 issue of Nature Communications, has implications for additional cancer types.

Physicians currently limit collection of small tumor samples of glioblastoma because the procedure, stereotactic needle biopsy, requires surgery with a patient sedated with anesthesia. Tumor samples are typically taken at the beginning and sometimes at the end of treatment.

But in a new study, researchers injected into the tumor a virus aimed at killing glioblastoma cells. During the same procedures, surgeons took tumor tissue samples and ran them through multiple types of advanced laboratory techniques, including single-cell RNA sequencing, transcriptomics, metabolomics, proteomics and immune profiling to demonstrate that even small tissue samples can yield additional insights into a tumor’s biology, immune interactions and molecular pathways. The study found that tissue also could be grafted onto a mouse model for additional analysis.

“One of the major frontiers in oncology is to find better treatments for these tumors, which have limited treatment options. We need a much deeper understanding of why certain treatments work and others don’t work,” explains study co-author Matthias Holdhoff, M.D., Ph.D., co-director of the Brain Cancer Disease Group at the Kimmel Cancer Center and an associate professor of oncology at the Johns Hopkins University School of Medicine. During the study, investigators wanted to maximize what they could learn from tissue samples. Newswise/SP

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