Immuno-transcriptomic profiling of extracranial pediatric solid malignancies

Andrew S. Brohl, Sivasish Sindiri, Jun S. Wei, David Milewski, Hsien Chao Chou, Young K. Song, Xinyu Wen, Jeetendra Kumar, Hue V. Reardon, Uma S. Mudunuri, Jack R. Collins, Sushma Nagaraj, Vineela Gangalapudi, Manoj Tyagi, Yuelin J. Zhu, Katherine E. Masih, Marielle E. Yohe, Jack F. Shern, Yue Qi, Udayan GuhaDaniel Catchpoole, Rimas J. Orentas, Igor B. Kuznetsov, Nicolas J. Llosa, John A. Ligon, Brian K. Turpin, Daniel G. Leino, Shintaro Iwata, Irene L. Andrulis, Jay S. Wunder, Silvia R.C. Toledo, Paul S. Meltzer, Ching Lau, Beverly A. Teicher, Heather Magnan, Marc Ladanyi, Javed Khan

Research output: Contribution to journalArticlepeer-review

Abstract

We perform an immunogenomics analysis utilizing whole-transcriptome sequencing of 657 pediatric extracranial solid cancer samples representing 14 diagnoses, and additionally utilize transcriptomes of 131 pediatric cancer cell lines and 147 normal tissue samples for comparison. We describe patterns of infiltrating immune cells, T cell receptor (TCR) clonal expansion, and translationally relevant immune checkpoints. We find that tumor-infiltrating lymphocytes and TCR counts vary widely across cancer types and within each diagnosis, and notably are significantly predictive of survival in osteosarcoma patients. We identify potential cancer-specific immunotherapeutic targets for adoptive cell therapies including cell-surface proteins, tumor germline antigens, and lineage-specific transcription factors. Using an orthogonal immunopeptidomics approach, we find several potential immunotherapeutic targets in osteosarcoma and Ewing sarcoma and validated PRAME as a bona fide multi-pediatric cancer target. Importantly, this work provides a critical framework for immune targeting of extracranial solid tumors using parallel immuno-transcriptomic and -peptidomic approaches.

Original languageEnglish (US)
Article number110047
JournalCell Reports
Volume37
Issue number8
DOIs
StatePublished - Nov 23 2021

Keywords

  • PRAME
  • RNA sequencing
  • T cell receptor
  • adoptive cell therapy
  • immunogenomics
  • immunopeptidomics
  • pediatric oncology
  • tumor-infiltrating lymphocytes

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology

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