RT-qPCR analysis of apoptosis related genes in patient-derived xenografts of small intestine neuroendocrine tumors in Balb/c NM after administration of Lu-177-octreotate, Lu-177-octreotate + A1M and A1M

This work aimed to examine the regulation of apoptosis-related genes in GOT1 tumors one and seven days after administration of 177Lu-octreotate with and without A1M and of A1M alone. At study start, 22 adult female Balb/c GOT1 tumor-bearing mice were divided into four groups of six animals that received 30 MBq 177Lu-octreotate or 5 mg/kg A1M, or co-treatment with both 177Lu-octreotate and A1M by i.v. injection. Also, a control group was sham-treated with saline. Half of the animals in each treatment and control group were terminated by cardiac puncture one-day post-injection (1 dpi), and the remaining animals were terminated at 7dpi. Tumor tissues were dissected at the time of termination, snap-frozen in liquid nitrogen and stored at -80°C. Three biological replicated were included in each test group at both 1 dpi and 7dpi, and two biological replicates were included in corresponding controls. An equal amount of total RNA (40 µg) was extracted from all samples, and 200 ng of total RNA was reversed transcribed into cDNA per sample.