Abstract
Patients with unresectable hepatocellular carcinoma (HCC) usually have poor prognosis because current monotherapy including surgery, chemotherapy and radiotherapy (RT) are not effective. Combination therapy may be effective to overcome this clinical problem. Here, we proposed the combination of sorafenib and RT, which have been applied in HCC treatment, could improve the treatment outcome of HCC. Our previous study showed that sorafenib could suppress the expression of NF-κB which is related to the chemo- and radio-resistance. Nevertheless, the expression of NF-κB is oscillatory and is affected by the treatments. Thus, understanding the oscillation of NF-κB expression would be beneficial for determining the optimal treatment schedule in combination therapy. Here established Huh7/NF-κB-tk-luc2/ rfp cell line, in which NF-κB indicates a NF-κB promoter, was utilized to noninvasively monitor the expression of NF-κB overtime in vitro and in vivo. The results show that pretreatment of sorafenib with RT suppresses the expressions of NF-κB and its downstream proteins induced by radiation through downregulation of phosphorylated extracellular signal-regulated kinase (pERK) most significantly compared with other treatment schedules. The results were further verified with Western blotting, EMSA, and NF-κB molecular imaging. These findings suggest that pretreatment of sorafenib with RT may be the ideal treatment schedule for the treatment of HCC.
| Original language | English |
|---|---|
| Pages (from-to) | 85450-85463 |
| Number of pages | 14 |
| Journal | Oncotarget |
| Volume | 7 |
| Issue number | 51 |
| DOIs | |
| Publication status | Published - 2016 |
| Externally published | Yes |
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Keywords
- Hepatocellular carcinoma
- MEK/ERK/NF-κB signaling
- Molecular imaging
- Radiation
- Sorafenib
ASJC Scopus subject areas
- Oncology
Cite this
Sorafenib pretreatment enhances radiotherapy through targeting MEK/ERK/NF-κB pathway in human hepatocellular carcinoma-bearing mouse model. / Chen, John Chun Hao; Chuang, Hui Yen; Hsu, Fei Ting; Chen, Yi Chen; Chien, Yi Chun; Hwang, Jeng Jong.
In: Oncotarget, Vol. 7, No. 51, 2016, p. 85450-85463.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Sorafenib pretreatment enhances radiotherapy through targeting MEK/ERK/NF-κB pathway in human hepatocellular carcinoma-bearing mouse model
AU - Chen, John Chun Hao
AU - Chuang, Hui Yen
AU - Hsu, Fei Ting
AU - Chen, Yi Chen
AU - Chien, Yi Chun
AU - Hwang, Jeng Jong
PY - 2016
Y1 - 2016
N2 - Patients with unresectable hepatocellular carcinoma (HCC) usually have poor prognosis because current monotherapy including surgery, chemotherapy and radiotherapy (RT) are not effective. Combination therapy may be effective to overcome this clinical problem. Here, we proposed the combination of sorafenib and RT, which have been applied in HCC treatment, could improve the treatment outcome of HCC. Our previous study showed that sorafenib could suppress the expression of NF-κB which is related to the chemo- and radio-resistance. Nevertheless, the expression of NF-κB is oscillatory and is affected by the treatments. Thus, understanding the oscillation of NF-κB expression would be beneficial for determining the optimal treatment schedule in combination therapy. Here established Huh7/NF-κB-tk-luc2/ rfp cell line, in which NF-κB indicates a NF-κB promoter, was utilized to noninvasively monitor the expression of NF-κB overtime in vitro and in vivo. The results show that pretreatment of sorafenib with RT suppresses the expressions of NF-κB and its downstream proteins induced by radiation through downregulation of phosphorylated extracellular signal-regulated kinase (pERK) most significantly compared with other treatment schedules. The results were further verified with Western blotting, EMSA, and NF-κB molecular imaging. These findings suggest that pretreatment of sorafenib with RT may be the ideal treatment schedule for the treatment of HCC.
AB - Patients with unresectable hepatocellular carcinoma (HCC) usually have poor prognosis because current monotherapy including surgery, chemotherapy and radiotherapy (RT) are not effective. Combination therapy may be effective to overcome this clinical problem. Here, we proposed the combination of sorafenib and RT, which have been applied in HCC treatment, could improve the treatment outcome of HCC. Our previous study showed that sorafenib could suppress the expression of NF-κB which is related to the chemo- and radio-resistance. Nevertheless, the expression of NF-κB is oscillatory and is affected by the treatments. Thus, understanding the oscillation of NF-κB expression would be beneficial for determining the optimal treatment schedule in combination therapy. Here established Huh7/NF-κB-tk-luc2/ rfp cell line, in which NF-κB indicates a NF-κB promoter, was utilized to noninvasively monitor the expression of NF-κB overtime in vitro and in vivo. The results show that pretreatment of sorafenib with RT suppresses the expressions of NF-κB and its downstream proteins induced by radiation through downregulation of phosphorylated extracellular signal-regulated kinase (pERK) most significantly compared with other treatment schedules. The results were further verified with Western blotting, EMSA, and NF-κB molecular imaging. These findings suggest that pretreatment of sorafenib with RT may be the ideal treatment schedule for the treatment of HCC.
KW - Hepatocellular carcinoma
KW - MEK/ERK/NF-κB signaling
KW - Molecular imaging
KW - Radiation
KW - Sorafenib
UR - http://www.scopus.com/inward/record.url?scp=85007463460&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85007463460&partnerID=8YFLogxK
U2 - 10.18632/oncotarget.13398
DO - 10.18632/oncotarget.13398
M3 - Article
VL - 7
SP - 85450
EP - 85463
JO - Oncotarget
JF - Oncotarget
SN - 1949-2553
IS - 51
ER -