Two NB cell lines, namely SH-SY5Y (ATCC CRL-2266) and SK-N-BE(2) (ATCC CRL-2271), were selected for the xenograft studies. SH-SY5Y is a TP53 wild type, non-MYCN-amplified cell line with no chromosome 1p loss of heterozygosity. The SK-N-BE(2) cell line is amplified for MYCN, carries a TP53 mutation (p.C135F), and is heterozygous for loss of chromosome 1p [70 (link)]. Expression of MYCN protein in these cell lines was reported earlier [42 (link)]. NB cells were cultured under standard conditions, as described previously [41 (link)].
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