The invention discloses an SHISA4
gene serving as a
diagnosis tool for a chronic obstructive
pulmonary disease. High-
throughput sequencing and QPCR (Quantitative
Polymerase Chain Reaction) researchesfind out that the content of the SHISA4
gene in blood of a patient with the chronic obstructive
pulmonary disease is remarkably reduced when being compared with the content in a normal person; a
western blot experiment proves that the content of SHISA4
protein in the blood of the patient with the chronic obstructive
pulmonary disease is remarkably reduced when being compared with the content in the normal person. Therefore, the SHISA4
gene and the SHISA4
protein can be used as biomarkers for diagnosing the chronic obstructive pulmonary
disease. A method for characterizing the chronic obstructive pulmonary
disease by utilizing the content of the gene or the
protein in the blood has the following advantages that
tissue sampling detection is avoided and pains of subjects are alleviated; meanwhile, the characterizing method can be used for screening healthy people and the chronic obstructive pulmonary
disease is effectively prevented.