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In vivo acquired sorafenib‑resistant patient‑derived tumor model displays alternative angiogenic pathways, multi‑drug resistance and chromosome instability

  • Authors:
    • Gang Hu
    • Yixin Zhang
    • Kedong Ouyang
    • Fubo Xie
    • Houshun Fang
    • Xueyang Yang
    • Kunyan Liu
    • Zongyu Wang
    • Xuzhen Tang
    • Jibin Liu
    • Lei Yang
    • Zhenzhou Jiang
    • Weikang Tao
    • He Zhou
    • Luyong Zhang
  • View Affiliations / Copyright

    Affiliations: Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing, Jiangsu 210009, P.R. China, Department of Surgery, Nantong Cancer Hospital, Nantong, Jiangsu 226361, P.R. China, Shanghai ChemPartner Co., Ltd., Shanghai 201203, P.R. China
    Copyright: © Hu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 3439-3446
    |
    Published online on: July 4, 2018
       https://doi.org/10.3892/ol.2018.9078
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Abstract

Acquired resistance to targeted therapies is an important clinical challenge. Research focusing on acquired resistance is hindered by the lack of relevant model systems. In the present study, the generation and characterization of an in vivo acquired sorafenib‑resistant hepatocellular carcinoma (HCC) xenograft model derived from a patient tumor is reported. A cancer cell line (LIXC‑004SR) was generated from a tumor that had developed following ~100 days of sorafenib treatment of a HCC patient‑derived xenograft (PDX) model (LIX004). The xenograft tumors derived from this cell line demonstrated sorafenib‑resistance in vivo. By contrast, a cell line (LIXC‑004NA) generated from a vehicle‑treated LIX004 PDX model remained sensitive to sorafenib in vivo. Following treatment with sorafenib in vivo, angiogenesis was significantly elevated in the LIXC‑004SR tumors when compared with that in the LIXC‑004NA tumors. The LIXC‑004SR cell culture supernatant stimulated human umbilical vein endothelial cell proliferation and extracellular‑signal‑regulated kinase and protein kinase B phosphorylation, which can only be inhibited by the combination of sorafenib and a fibroblast growth factor receptor 1 (FGFR1) inhibitor, AZD4547. The tumor growth of the sorafenib‑resistant LIXC‑004SR xenograft was inhibited by the FGFR1 inhibitor in vivo, suggesting that one of the underlying mechanisms of the acquired resistance is likely due to activation of alternative angiogenic pathways. The LIXC‑004SR cell line also exhibited signs of multi‑drug resistance and genetic instability. Taken together, these data suggest that this in vivo model of acquired resistance from a PDX model may reflect sorafenib‑resistance in certain patients and may facilitate drug resistance research, as well as contributing to the clinical prevention and management of drug resistance.
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Copy and paste a formatted citation
Spandidos Publications style
Hu G, Zhang Y, Ouyang K, Xie F, Fang H, Yang X, Liu K, Wang Z, Tang X, Liu J, Liu J, et al: In vivo acquired sorafenib‑resistant patient‑derived tumor model displays alternative angiogenic pathways, multi‑drug resistance and chromosome instability. Oncol Lett 16: 3439-3446, 2018.
APA
Hu, G., Zhang, Y., Ouyang, K., Xie, F., Fang, H., Yang, X. ... Zhang, L. (2018). In vivo acquired sorafenib‑resistant patient‑derived tumor model displays alternative angiogenic pathways, multi‑drug resistance and chromosome instability. Oncology Letters, 16, 3439-3446. https://doi.org/10.3892/ol.2018.9078
MLA
Hu, G., Zhang, Y., Ouyang, K., Xie, F., Fang, H., Yang, X., Liu, K., Wang, Z., Tang, X., Liu, J., Yang, L., Jiang, Z., Tao, W., Zhou, H., Zhang, L."In vivo acquired sorafenib‑resistant patient‑derived tumor model displays alternative angiogenic pathways, multi‑drug resistance and chromosome instability". Oncology Letters 16.3 (2018): 3439-3446.
Chicago
Hu, G., Zhang, Y., Ouyang, K., Xie, F., Fang, H., Yang, X., Liu, K., Wang, Z., Tang, X., Liu, J., Yang, L., Jiang, Z., Tao, W., Zhou, H., Zhang, L."In vivo acquired sorafenib‑resistant patient‑derived tumor model displays alternative angiogenic pathways, multi‑drug resistance and chromosome instability". Oncology Letters 16, no. 3 (2018): 3439-3446. https://doi.org/10.3892/ol.2018.9078
Copy and paste a formatted citation
x
Spandidos Publications style
Hu G, Zhang Y, Ouyang K, Xie F, Fang H, Yang X, Liu K, Wang Z, Tang X, Liu J, Liu J, et al: In vivo acquired sorafenib‑resistant patient‑derived tumor model displays alternative angiogenic pathways, multi‑drug resistance and chromosome instability. Oncol Lett 16: 3439-3446, 2018.
APA
Hu, G., Zhang, Y., Ouyang, K., Xie, F., Fang, H., Yang, X. ... Zhang, L. (2018). In vivo acquired sorafenib‑resistant patient‑derived tumor model displays alternative angiogenic pathways, multi‑drug resistance and chromosome instability. Oncology Letters, 16, 3439-3446. https://doi.org/10.3892/ol.2018.9078
MLA
Hu, G., Zhang, Y., Ouyang, K., Xie, F., Fang, H., Yang, X., Liu, K., Wang, Z., Tang, X., Liu, J., Yang, L., Jiang, Z., Tao, W., Zhou, H., Zhang, L."In vivo acquired sorafenib‑resistant patient‑derived tumor model displays alternative angiogenic pathways, multi‑drug resistance and chromosome instability". Oncology Letters 16.3 (2018): 3439-3446.
Chicago
Hu, G., Zhang, Y., Ouyang, K., Xie, F., Fang, H., Yang, X., Liu, K., Wang, Z., Tang, X., Liu, J., Yang, L., Jiang, Z., Tao, W., Zhou, H., Zhang, L."In vivo acquired sorafenib‑resistant patient‑derived tumor model displays alternative angiogenic pathways, multi‑drug resistance and chromosome instability". Oncology Letters 16, no. 3 (2018): 3439-3446. https://doi.org/10.3892/ol.2018.9078
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