High Expression of KIF22/Kinesin-Like DNA Binding Protein (Kid) as a Poor Prognostic Factor in Prostate Cancer Patients

Abstract

BackgroundKid (kinesin-like DNA binding protein), a member of microtubule-dependent molecular motor proteins, also known as KIF22, is reported to be associated with carcinogenesis and cancer progression in different types of malignant tumor, but the biologic behavior and clinical outcome of KIF22 in prostate cancer (PCa) has not been well studied. This study aimed to analyze the association between KIF22 and clinical outcome in PCa patients.Material/MethodsThe expression of KIF22 in tumor specimens compared with paired paracancerous tissue from 114 patients undergoing radical prostatectomy was detected by immunohistochemistry; results were verified using The Cancer Genome Atlas (TCGA) database. Subsequently, the relationship between KIF22 expression and clinical prognosis of PCa patients was then statistically analyzed.ResultsBoth immunohistochemistry and database analysis showed that KIF22 was obviously overexpressed in PCa tissues compared with paracancerous tissue. The overexpression of KIF22 at the protein level was significantly related to higher clinical stage (P=0.025), Gleason score (P=0.002), seminal vesicle invasion (P=0.007), and lymph node metastasis (P=0.009). Furthermore, with the overexpression of KIF22 mRNA level in PCa patients, the oncological prognosis of PCa patients was much poorer.ConclusionsHigh-level expression of KIF22 was related to both tumor progression and adverse clinical outcome. For this reason, KIF22 may become a potential prognostic factor for PCa.

Potential prognostic markers and significant lncRNA–mRNA co-expression pairs in laryngeal squamous cell carcinoma

“…Suppression of KIF22 inhibits cancer cell proliferation through delaying mitotic exit [ 28 ]. Zhang et al [ 29 ] indicated that KIF22 was associated with clinical outcome and tumor progression in prostate cancer. KIF22 is involved in the migration and proliferation of gastric cancer cells through MAPK-ERK pathways [ 30 ].…”

Kinesin family member 14 (KIF14) induces tumor cell proliferation in muscle invasive bladder cancer (MIBC)

“…Except for KIF14, multiple members of kinesin family are involved in tumorigenes and could serve as prognostic predictor of several types of cancers [28]. High expression of KIF22 and KIF15 could be poor prognostic factors in patients with prostate cancer and lung adenocarcinoma, respectively [29,30]. In addition, KIF20A is correlated with unfavorable clinical outcome and the…”

Aberrant KIF20A Expression Is Associated with Adverse Clinical Outcome and Promotes Tumor Progression in Prostate Cancer

“…114 PCa patients were collected from the Second Hospital of Tianjin Medical University; all the patients had signed an informed consent form [18]. The tissue from these patients who underwent radical prostatectomy between July 2016 and October 2017 were paraffin-embedded for immunohistochemistry analysis.…”

“…The proportion of tumor cells was graded from 0 to 2: 0 points (<5%), 1 point (5%–50%), 2 points (>50%). The sum of scores represented the expression levels: 0~2 points as low expression and 3~4 points as high expression [18]. The mean score from two pathologists was used as the final immunostaining score.…”