Journal
JOURNAL OF CANCER
Volume 11, Issue 18, Pages 5413-5423Publisher
IVYSPRING INT PUBL
DOI: 10.7150/jca.39760
Keywords
Lung squamous cell carcinoma; Proliferation; ASPM; CDK4; Therapeutic target
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Funding
- National Natural Science Foundation of China [81501140, 81502656]
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Lung cancer is a type of malignant tumor with high morbidity and mortality. Due to its complicated etiology and clinical manifestations, no significant therapeutic advance has been made. Lung squamous cell carcinoma (LSCC) is the most common type of lung cancer. To combat this disease, novel therapeutic targets are badly requirement. ASPM (Abnormal spindle-like microcephaly-associated protein) is involved in multiple cellular or developmental processes, such as neurogenesis and brain growth. ASPM is also reported widely expressed in multiple tumor tissues and involved in the development and progression of several cancers including lung cancer. However, the potential role on ASPM on LSCC is still unclear. In this study, we reported that ASPM was related to the poor prognosis of patients with lung squamous cell carcinoma. Our results further showed that ASPM depletion dramatically inhibited the proliferation of LSCC cells, consistent with the obviously decreased of cyclin D1(CCND1) and cyclin dependent kinases 4 (CDK4) expression. In vivo assays further confirmed ASPM ablation markedly blocked tumor growth in vivo compared with control. In addition, a co-expression was found between ASPM and CDK4 in human tumor tissues. Taken together, our data provides strong evidence that ASPM promotes lung squamous cell carcinoma proliferation in vitro and in vivo, and indicates its potential role as a LSCC therapeutic target.
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