Target intelligence / Profile preview

Keratin 19, also known as Cytokeratin 19 (CK-19) (CK-19)

Target
CK-19
Molecular classification
Intermediate filament protein, Cytokeratin
01

Overview

Keratin 19 is a type I cytokeratin, a cytoplasmic intermediate filament protein, playing a crucial role in maintaining the structural integrity of epithelial cells. It is often used as a biomarker for detecting tumor cells, particularly in cancers like breast, lung, and stomach carcinomas. CK-19 is also involved in cancer stem cell reprogramming and modulating drug sensitivity in cancer cells.

Other names
Keratin, type I cytoskeletal 19K1C19KRT19
02

Mechanism of action

Not applicable as it is primarily used as a biomarker rather than a therapeutic target.

03

Biological functions

Structural integrity of epithelial cellscell cycle regulationcancer stem cell reprogrammingdrug sensitivity modulation
04

Disease associations

Cancer, particularly carcinomas of the lung, breast, stomach, pancreas, ovaryeccrine porocarcinomafollicular adenoma
05

Safety considerations

False positivity in RT-PCR studies can occur due to illegitimate transcription, pseudogenes, sample contamination, and other factors.
06

Biomarkers

CYFRA 21-1, a soluble fragment of KRT19, is used as a tumor marker.

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