Abstract
Purpose: In head and neck squamous cell carcinoma (HNSCC), the incidence of RAS mutation, which is the major cause of cetuximab resistance, is relatively rare compared with the other types of cancers, and the mechanism mediating acquired resistance is unclear compared with the driver gene mutation-mediated de novo resistance. Here, we investigated the driver gene mutation-independent mechanism for cetuximab resistance in HNSCC.Experimental Design: We used the in vitro-selected and in vivo-selected cetuximab-resistant sublines of HNSCC cell lines for investigating the mechanism of acquired resistance to cetuximab. Zebrafish model was applied for evaluating the synergistic effect of combinatory drugs for overcoming cetuximab resistance.Results: The cetuximab-resistant HNSCC cells undergo a Snail-induced epithelial-mesenchymal transition. Mechanistically, Snail induces the expression of lymphotoxin-β (LTβ), a TNF superfamily protein that activates NF-κB, and protein arginine methyltransferase 1 (PRMT1), an arginine methyltransferase that methylates EGFR. LTβ interacts with methylated EGFR to promote its ligand-binding ability and dimerization. Furthermore, LTβ activates the NF-κB pathway through a LTβ receptor-independent mechanism. Combination of an EGFR tyrosine kinase inhibitor and a NF-κB inhibitor effectively suppressed cetuximab-resistant HNSCC and interfering with the EGFR-LTβ interaction reverses resistance.Conclusions: Our findings elucidate the mechanism of driver gene mutations-independent mechanism of acquired resistance to cetuximab in HNSCC and also provide potential strategies for combating cetuximab resistance. Clin Cancer Res; 1-14. ©2017 AACR.
| Original language | English |
|---|---|
| Journal | Clinical Cancer Research |
| DOIs | |
| Publication status | E-pub ahead of print - Feb 14 2017 |
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- Journal Article
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Lymphotoxin-β Interacts with Methylated EGFR to Mediate Acquired Resistance to Cetuximab in Head and Neck Cancer. / Hsu, Dennis Shin-Shian; Hwang, Wei-Lun; Yuh, Chiou-Hwa; Chu, Chen-Hsi; Ho, Yang-Hui; Chen, Pon-Bo; Lin, Han-Syuan; Lin, Hua-Kuo; Wu, Shih-Pei; Lin, Chih-Yi; Hsu, Wen-Hao; Lan, Hsin-Yi; Wang, Hsiao-Jung; Tai, Shyh-Kuan; Hung, Mien-Chie; Yang, Muh-Hwa.
In: Clinical Cancer Research, 14.02.2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Lymphotoxin-β Interacts with Methylated EGFR to Mediate Acquired Resistance to Cetuximab in Head and Neck Cancer
AU - Hsu, Dennis Shin-Shian
AU - Hwang, Wei-Lun
AU - Yuh, Chiou-Hwa
AU - Chu, Chen-Hsi
AU - Ho, Yang-Hui
AU - Chen, Pon-Bo
AU - Lin, Han-Syuan
AU - Lin, Hua-Kuo
AU - Wu, Shih-Pei
AU - Lin, Chih-Yi
AU - Hsu, Wen-Hao
AU - Lan, Hsin-Yi
AU - Wang, Hsiao-Jung
AU - Tai, Shyh-Kuan
AU - Hung, Mien-Chie
AU - Yang, Muh-Hwa
N1 - ©2017 American Association for Cancer Research.
PY - 2017/2/14
Y1 - 2017/2/14
N2 - Purpose: In head and neck squamous cell carcinoma (HNSCC), the incidence of RAS mutation, which is the major cause of cetuximab resistance, is relatively rare compared with the other types of cancers, and the mechanism mediating acquired resistance is unclear compared with the driver gene mutation-mediated de novo resistance. Here, we investigated the driver gene mutation-independent mechanism for cetuximab resistance in HNSCC.Experimental Design: We used the in vitro-selected and in vivo-selected cetuximab-resistant sublines of HNSCC cell lines for investigating the mechanism of acquired resistance to cetuximab. Zebrafish model was applied for evaluating the synergistic effect of combinatory drugs for overcoming cetuximab resistance.Results: The cetuximab-resistant HNSCC cells undergo a Snail-induced epithelial-mesenchymal transition. Mechanistically, Snail induces the expression of lymphotoxin-β (LTβ), a TNF superfamily protein that activates NF-κB, and protein arginine methyltransferase 1 (PRMT1), an arginine methyltransferase that methylates EGFR. LTβ interacts with methylated EGFR to promote its ligand-binding ability and dimerization. Furthermore, LTβ activates the NF-κB pathway through a LTβ receptor-independent mechanism. Combination of an EGFR tyrosine kinase inhibitor and a NF-κB inhibitor effectively suppressed cetuximab-resistant HNSCC and interfering with the EGFR-LTβ interaction reverses resistance.Conclusions: Our findings elucidate the mechanism of driver gene mutations-independent mechanism of acquired resistance to cetuximab in HNSCC and also provide potential strategies for combating cetuximab resistance. Clin Cancer Res; 1-14. ©2017 AACR.
AB - Purpose: In head and neck squamous cell carcinoma (HNSCC), the incidence of RAS mutation, which is the major cause of cetuximab resistance, is relatively rare compared with the other types of cancers, and the mechanism mediating acquired resistance is unclear compared with the driver gene mutation-mediated de novo resistance. Here, we investigated the driver gene mutation-independent mechanism for cetuximab resistance in HNSCC.Experimental Design: We used the in vitro-selected and in vivo-selected cetuximab-resistant sublines of HNSCC cell lines for investigating the mechanism of acquired resistance to cetuximab. Zebrafish model was applied for evaluating the synergistic effect of combinatory drugs for overcoming cetuximab resistance.Results: The cetuximab-resistant HNSCC cells undergo a Snail-induced epithelial-mesenchymal transition. Mechanistically, Snail induces the expression of lymphotoxin-β (LTβ), a TNF superfamily protein that activates NF-κB, and protein arginine methyltransferase 1 (PRMT1), an arginine methyltransferase that methylates EGFR. LTβ interacts with methylated EGFR to promote its ligand-binding ability and dimerization. Furthermore, LTβ activates the NF-κB pathway through a LTβ receptor-independent mechanism. Combination of an EGFR tyrosine kinase inhibitor and a NF-κB inhibitor effectively suppressed cetuximab-resistant HNSCC and interfering with the EGFR-LTβ interaction reverses resistance.Conclusions: Our findings elucidate the mechanism of driver gene mutations-independent mechanism of acquired resistance to cetuximab in HNSCC and also provide potential strategies for combating cetuximab resistance. Clin Cancer Res; 1-14. ©2017 AACR.
KW - Journal Article
U2 - 10.1158/1078-0432.CCR-16-1955
DO - 10.1158/1078-0432.CCR-16-1955
M3 - Article
JO - Clinical Cancer Research
JF - Clinical Cancer Research
SN - 1078-0432
ER -