Purpose Chemokines and chemokine receptors not only have the powerful ability in cancer metastasis and tumorigenesis, but also act as anti-tumorgenic ability. Lung Krueppel-like factor (LKLF, KLF2) is a member of the family of the Krueppel-like factors (KLFs). KLF2 was initially described as a lung-specific transcription factor. KLF2 is reported to regulate some malignant cells. We examined and evaluated the effect of KLF2 on pulmonary adenocarcinoma and the relationship of their mRNA expression with CCR7, EGFR and p53 genetical mutations in pulmonary adenocarcinoma.
Patients and Methods 120 patients of stage I to IV with pulmonary adenocarcinoma were included in this retrospective analysis. The expression of CCR7 and KLF2 mRNA expression in surgically resected pulmonary adenocarcinoma specimens were examined and evaluated the relation to prognosis, the effect of EGFR and p53 genetical mutations.
Results High mRNA expression of KLF2 in lung cancer patients indicated significantly good prognosis than the groups of low expressions (p= 0.0066, HR= 2.008, 95% CI of ratio 1.215 to 3.319). The expression of KLF2 mRNA had relationships with CCR7, CCL21 and CCL19 mRNA expression in pulmonary adenocarcinoma. Moreover the mRNA expression of KLF2 in pulmonary adenocarcinoma specimens was influenced by the mutation of p53 mutation in lung cancer specimens.
Conclusion We propose KLF2 as clinical good prognostic factors and that KLF2 has strong relation with CCR7, the ligands and p53 genetical mutation mRNA expression in pulmonary adenocarcinoma.