National Institutes of Health/National Cancer Institute (NIH/NCI)
Z01 BC010891
米国
National Institutes of Health/National Cancer Institute (NIH/NCI)
Cancer Moonshot Program
米国
引用
ジャーナル: Cell Rep Med / 年: 2021 タイトル: CAR T cells targeting tumor-associated exons of glypican 2 regress neuroblastoma in mice. 著者: Nan Li / Madeline B Torres / Madeline R Spetz / Ruixue Wang / Luyi Peng / Meijie Tian / Christopher M Dower / Rosa Nguyen / Ming Sun / Chin-Hsien Tai / Natalia de Val / Raul Cachau / Xiaolin ...著者: Nan Li / Madeline B Torres / Madeline R Spetz / Ruixue Wang / Luyi Peng / Meijie Tian / Christopher M Dower / Rosa Nguyen / Ming Sun / Chin-Hsien Tai / Natalia de Val / Raul Cachau / Xiaolin Wu / Stephen M Hewitt / Rosandra N Kaplan / Javed Khan / Brad St Croix / Carol J Thiele / Mitchell Ho / 要旨: Targeting solid tumors must overcome several major obstacles, in particular, the identification of elusive tumor-specific antigens. Here, we devise a strategy to help identify tumor-specific epitopes. ...Targeting solid tumors must overcome several major obstacles, in particular, the identification of elusive tumor-specific antigens. Here, we devise a strategy to help identify tumor-specific epitopes. Glypican 2 (GPC2) is overexpressed in neuroblastoma. Using RNA sequencing (RNA-seq) analysis, we show that exon 3 and exons 7-10 of GPC2 are expressed in cancer but are minimally expressed in normal tissues. Accordingly, we discover a monoclonal antibody (CT3) that binds exons 3 and 10 and visualize the complex structure of CT3 and GPC2 by electron microscopy. The potential of this approach is exemplified by designing CT3-derived chimeric antigen receptor (CAR) T cells that regress neuroblastoma in mice. Genomic sequencing of T cells recovered from mice reveals the CAR integration sites that may contribute to CAR T cell proliferation and persistence. These studies demonstrate how RNA-seq data can be exploited to help identify tumor-associated exons that can be targeted by CAR T cell therapies.
名称: GPC2 HET CT3 complex / タイプ: COMPLEX / Entity ID: all / 由来: MULTIPLE SOURCES
緩衝液
pH: 7.5
試料
濃度: 0.01 mg/ml / 包埋: NO / シャドウイング: NO / 染色: YES / 凍結: NO
染色
タイプ: NEGATIVE 詳細: A 3 uL aliquot containing ~0.01 mg/mL of the samples was applied for 20 s onto a carbon-coated 200 Cu mesh grid (Electron Microscopy Sciences, Protochips, Inc.) that had been glow discharged ...詳細: A 3 uL aliquot containing ~0.01 mg/mL of the samples was applied for 20 s onto a carbon-coated 200 Cu mesh grid (Electron Microscopy Sciences, Protochips, Inc.) that had been glow discharged at 30 mA for 30 s (Pelco easiGlow, Ted Pella, Inc.), then negatively stained with 0.7% (w/v) uranyl formate for 40 sec. 染色剤: uranyl formate