Lactate Transporter Monocarboxylate Transporter 4 Induces Bone Pain in Head and Neck Squamous Cell Carcinoma.

Lactate Transporter Monocarboxylate Transporter 4 Induces Bone Pain in Head and Neck Squamous Cell Carcinoma.
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DOI:
10.3390/ijms19113317
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发表时间:
2018-10-25
影响因子:
5.6
通讯作者:
Sasaki A
Sasaki A
中科院分区:
生物学2区
文献类型:
--
作者:
Hasegawa K;Okui T;Shimo T;Ibaragi S;Kawai H;Ryumon S;Kishimoto K;Okusha Y;Monsur Hassan NM;Sasaki A

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头颈部鳞状细胞癌(HNSCC)在临床上构成了一个重大挑战,因为它可以侵入面部骨骼并引起骨痛,而这种疼痛治疗不足且知之甚少。在这里,我们研究了HNSCC骨痛(HNSCC-BP)在胫骨内小鼠异种移植模型,使用人HNSCC细胞系(SAS细胞)。这些小鼠发展与磷酸化ERK 1/2(pERK 1/2)的上调相关的HNSCC-BP,磷酸化ERK 1/2是感觉神经细胞体的背根神经节(DRG)中神经元兴奋的分子指标。我们的实验表明,通过短发夹(short hairpin,shRNA)转导抑制单羧酸转运蛋白4(monocarboxylate transporter 4,MCT 4)抑制HNSCC-BP、骨髓乳酸水平和DRG中pERK 1/2表达。感觉神经也表达了酸敏感受体TRPV 1水平的增加。与SAS细胞共培养的DRG神经元显示出增加的轴突生长,并且被用shRNA沉默MCT 4抑制。总的来说,我们的结果表明,HNSCC诱导了酸性骨微环境,通过MCT 4表达引起HNSCC-BP。
Head and neck squamous cell carcinoma (HNSCC) poses a significant challenge clinically, as it can invade facial bones and cause bone pain that is undertreated and poorly understood. Here we studied HNSCC bone pain (HNSCC-BP) in an intratibial mouse xenograft model that uses a human HNSCC cell line (SAS cells). These mice develop HNSCC-BP associated with an upregulation of phosphorylated ERK1/2 (pERK1/2), which is a molecular indicator of neuron excitation in the dorsal root ganglia (DRGs) of sensory nerve cell bodies. Our experiments demonstrated that the inhibition of monocarboxylate transporter 4 (MCT4) by short hairpin (shRNA) transduction suppressed the HNSCC-BP, the lactate level in bone marrow, and the pERK1/2 expression in DRG. The sensory nerves also expressed increased levels of the acid-sensing receptor TRPV1. DRG neurons co-cultured with SAS cells showed increased neurite outgrowth, and were inhibited by MCT4 silencing with shRNA. Collectively, our results show that HNSCC induced an acidic bone microenvironment that evokes HNSCC-BP via MCT4 expression.
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