PMID- 25402559 OWN - NLM STAT- MEDLINE DCOM- 20150814 LR - 20190212 IS - 1421-9778 (Electronic) IS - 1015-8987 (Linking) VI - 34 IP - 5 DP - 2014 TI - IGF2R expression is associated with the chemotherapy response and prognosis of patients with advanced NSCLC. PG - 1578-88 LID - 10.1159/000366361 [doi] AB - BACKGROUND: Insulin-like growth factor (IGF) pathway has been suggested as a new molecular target for the treatment of cancer including Non-small cell lung cancer (NSCLC). We postulated that IGF-2 receptor (IGF2R) may be associated with treatment response and prognosis of NSCLC patients receiving chemotherapy. METHODS: A total of 464 patients with inoperable advanced stage of NSCLC were enrolled. All patients received platinum-based chemotherapy. Meanwhile, the IGF2R expression in tumor samples was detected by Immunohistochemical analysis. The IGF2R expression was inhibited in several human NSCLC cell lines (H292, A549, NCI-H460, Calu-3 and NCI-H23) after small interfering RNA (siRNA) transfection and the cellular biology behavior were evaluated. RESULTS: Of all NSCLC patients, 204 had high IGF2R expression and 260 had low IGF2R expression. The low IGF2R expression was significantly associated with the smoking status, higher tumor stage, and poorer differentiation status of these patients. Notably, we found that the low IGF2R expression was closely associated with the chemotherapy response in NSCLC patients. Patients with low IGF2R expressions had a poorer prognosis than those with high IGF2R expressions. IGF2R inhibition by si-RNA technique in NSCLC cell lines increased the proliferation, migration and invasion abilities, but reduced the apoptosis rate. IGF2R silencing significantly enhanced the chemo-resistance of NSCLC cell lines to cisplatin treatment. CONCLUSION: The IGF2R expression in tumor is associated with the chemotherapy response and prognosis of Patients with advanced NSCLC. CI - (c) 2014 S. Karger AG, Basel. FAU - Tian, Zhennan AU - Tian Z AD - Department of Pathology, The Third Affiliated Hospital of Harbin Medical University, Nangang District, Harbin, China. FAU - Yao, Guodong AU - Yao G FAU - Song, Hongtao AU - Song H FAU - Zhou, Yang AU - Zhou Y FAU - Geng, Jingshu AU - Geng J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20141031 PL - Germany TA - Cell Physiol Biochem JT - Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology JID - 9113221 RN - 0 (RNA, Small Interfering) RN - 0 (Receptor, IGF Type 2) RN - Q20Q21Q62J (Cisplatin) SB - IM MH - Apoptosis/drug effects/genetics MH - Carcinoma, Non-Small-Cell Lung/drug therapy/*genetics MH - Cell Line, Tumor MH - Cell Movement/drug effects/genetics MH - Cell Proliferation/drug effects/genetics MH - Cisplatin/pharmacology MH - Drug Resistance, Neoplasm/genetics MH - Female MH - Humans MH - Lung Neoplasms/drug therapy/*genetics MH - Male MH - Middle Aged MH - Prognosis MH - RNA, Small Interfering/genetics MH - Receptor, IGF Type 2/*genetics EDAT- 2014/11/18 06:00 MHDA- 2015/08/15 06:00 CRDT- 2014/11/18 06:00 PHST- 2014/09/01 00:00 [accepted] PHST- 2014/11/18 06:00 [entrez] PHST- 2014/11/18 06:00 [pubmed] PHST- 2015/08/15 06:00 [medline] AID - 000366361 [pii] AID - 10.1159/000366361 [doi] PST - ppublish SO - Cell Physiol Biochem. 2014;34(5):1578-88. doi: 10.1159/000366361. Epub 2014 Oct 31.