Table 1 TOPK expression is a prognostic marker for cancer

From: T-LAK cell-originated protein kinase (TOPK): an emerging target for cancer-specific therapeutics

Site

Cancer type

Methodology

Findings

References

Prostate

Neuroendocrine carcinoma, acinar adenocarcinoma

Transcriptome profiling, IHC

One of the top 10 genes overexpressed in small cell carcinoma

57

 

Adenocarcinoma

IHC, qRT-PCR

Upregulation associated with age, Gleason score, clinicopathological stage, metastatic spread, survival and PSA failure. Predictor for biochemical recurrence-free survival

10

 

Prostatic adenocarcinoma

IHC, immunoblot, microarray

Expression correlates with lack of tissue differentiation, disease aggression and metastatic spread

6

 

Prostatic adenocarcinoma

Custom qRT-PCR Microarray

Cancer/testis antigen for prostate cancer, expression correlates with Gleason score but not age, stage, or preoperative PSA

58

 

Prostatic adenocarcinoma

IHC

Expression correlates with stage > T2c and Gleason score ≥ 8, PSA > 20 ng/ml

59

Liver

Hepatocellular carcinoma, cholangiocarcinoma

IHC

High expression in cholangiocarcinoma, lower expression in hepatocellular carcinoma. Low expression associated with poor prognosis in CCA

60

 

Hepatocellular carcinoma

qRT-PCR; immunoblot

Upregulation in all HCC cases

61

Head and neck

Oral squamous cell carcinoma

IHC

Low expression associated with poor prognosis in young patients, high expression in older patients associated with poorly differentiated tumours, smokers, and late-stage disease.

62

Ovarian

Epithelial ovarian cancer

IHC, Immunoblot, qRT-PCR

High expression associated with poor progression-free survival and overall survival in early-stage cancer; Transactivation in EOC, less in borderline malignancy tumours

44

Brain

Glioblastoma multiforme

Immunoblot, IHC qRT-PCR

Upregulated in all GBM samples

7

Lung

Adenocarcinoma

IHC

High expression associated with poorly differentiated tumours, metastatic spread, high-TNM stage and reduced overall survival. Patients with combination of high TOPK and mutp53 had lowest prognosis

63

Haematological

Primary AML

qRT-PCR, immunoblotting

TOPK detected in 9/12 samples; 3/3 ALL samples and in plasmocytoma and blastic type mantle cell lymphoma. Weak expression in peripheral blood stem cells

64

Gastric

Gastric carcinoma

IHC, immunoblotting

Expression independently correlated with poor outcome

65

Oesophageal

Oesophageal squamous cell carcinoma

qRT-PCR, IHC, immunoblotting

Expression independently correlated with poor outcome

66

Colorectal

Colorectal carcinoma

IHC tissue microarray

No relationship between VEGFa gene amplification and TOPK expression/gene status

67

  1. Expression of TOPK in primary tumours is linked to enhanced tumour aggression, invasion and metastatic spread in a variety of cancers. Multivariate analysis of clinical samples from numerous sites indicates that a significant relationship exists between TOPK expression in tumour tissue and poor prognosis for patients.
  2. Key: IHC immunohistochemistry, PSA prostate specific antigen, AML acute myeloid leukaemia, ALL acute lymphocytic leukaemia, TNM tumour, node and metastasis, EOC epithelial ovarian cancer, GBM glioblastoma multiform, CCA cholangiocarcinoma, VEGFa vascular endothelial growth factor A, TOPK T-LAK cell-originated protein kinase.