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GENE AND PROTEIN SUMMARY

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Gene name

STAT5A

Description

signal transducer and activator of transcription 5A

Protein class

Candidate cancer biomarkers, Mapped to UniProt SWISS-PROT, SH2-domain containing proteins, Transcription factors

Protein evidence

High

Entrez gene summary

The protein encoded by this gene is a member of the STAT family of transcription factors. In response to cytokines and growth factors, STAT family members are phosphorylated by the receptor associated kinases, and then form homo- or heterodimers that translocate to the cell nucleus where they act as transcription activators. This protein is activated by, and mediates the responses of many cell ligands, such as IL2, IL3, IL7 GM-CSF, erythropoietin, thrombopoietin, and different growth hormones. Activation of this protein in myeloma and lymphoma associated with a TEL/JAK2 gene fusion is independent of cell stimulus and has been shown to be essential for the tumorigenesis. The mouse counterpart of this gene is found to induce the expression of BCL2L1/BCL-X(L), which suggests the antiapoptotic function of this gene in cells. [provided by RefSeq, Jul 2008]

External links

Ensembl, UniProt, Entrez gene, neXtProt, Antibodypedia

No of splice variants

8 in total
0 with predicted TM region
0 with predicted signal peptide

SUBCELLULAR LOCATION SUMMARY

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Main location(s)

Cytoplasm

Additional location(s)

Nucleus but not nucleoli 

Staining summary

Staining of cytoplasm in all three cell lines with additional staining of nucleus in A-431 and U-2 OS.

Reliability (Single)

Antibodies in assay

HPA027873
 

NORMAL TISSUE & ORGAN SUMMARY

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Expression summary

Cytoplasmic and nuclear expression in a few tissues, most abundant in placental trophoblasts, glandular cells in breast and subsets of lymphoid cells.

Tissue specificity

Expressed in 29 out of 82 cell types

Reliability (APE)

Medium

Antibodies in assay

CAB003860, HPA027873
 

Organ

No of cell types

Protein expression

CNS (brain) 11
Hematopoietic (blood) 8
Liver and pancreas 5
Digestive (GI-tract) 13
Respiratory (lung) 4
Cardiovascular 1
Female tissues 13
Placenta 2
Male tissues 5
Urinary tract (kidney) 3
Skin and soft tissues 14
Endocrine tissues 3

Level of annotated protein expression





High
Medium
Low
None

CANCER TISSUE SUMMARY

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Staining summary

Antibody staining in 22% of the cancers

Antibodies in assay

CAB003860, HPA027873
 

Tissue

Cancer staining

Protein
expression of
normal tissue

Breast cancer
 
Carcinoid
 
Cervical cancer
 
 
Colorectal cancer
 
 
Endometrial cancer
 
 
Glioma
 
Head and neck cancer
 
 
Liver cancer
 
 
Lung cancer
 
 
Lymphoma
 
 
 

Tissue

Cancer staining

Protein
expression of
normal tissue

Melanoma
 
Ovarian cancer
 
Pancreatic cancer
 
Prostate cancer
 
Renal cancer
 
Skin cancer
 
Stomach cancer
 
 
Testis cancer
 
Thyroid cancer
 
Urothelial cancer
 

Level of antibody staining





Strong
Moderate
Weak
Negative

CELL LINE SUMMARY

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RNA evidence

Medium
 

Cell line

Cell origin

RNA abundance

IH staining

IF intensity

CAB003860

HPA027873

HPA027873

A-431 Skin Low
Weak
A-549 Lung Low
CACO-2 Colon Low
HEK 293 Embryonal kidney Low
HeLa Cervix Medium
Hep-G2 Liver Low
MCF-7 Pleural effusion Low
PC-3 Bone marrow Not detected
RT-4 Urinary bladder Low
U-2 OS Bone Low
Weak
U-251 MG Brain Low
Weak

ANTIBODY SUMMARY

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Antibody

Clonality

Validation

CAB003860 mAb
HPA027873 pAb