CKL7 Antibody

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Description

Clinical and Diagnostic Applications

CK7 antibodies are pivotal in tumor classification and metastatic origin determination:

ApplicationDetailsReferences
Primary Tumor Identification- Lung, breast, ovarian carcinomas: CK7+; colorectal carcinomas: CK7- .
- Chromophobe renal cell carcinoma: CK7+ vs. oncocytoma (CK7-) .
Metastatic Cancer Workup- CK7+/CK20- pattern: Suggests esophageal/gastric origin; CK7+/CK20+: Urothelial or ovarian origin .
- CK7+/CK20-: Excludes colorectal metastasis .
Xenograft ModelsHuman-specific CK7 antibodies distinguish human tumor cells from murine host tissue .
Prognostic StratificationCK7+ colorectal carcinomas correlate with poor survival (5-year CSS: 29.4% vs. 64.6% in CK7-) .

Research Findings and Prognostic Implications

CK7 expression patterns and clinical outcomes have been extensively studied:

Colorectal Carcinoma (CRC)

ParameterCK7+ CRCCK7- CRCStatistical Significance
5-Year Survival29.4%64.6%P = 0.0221
Cancer-Specific SurvivalRestricted mean: 4.98 yearsRestricted mean: 7.74 yearsP = 0.007
Lymph Node MetastasisAssociated with higher incidenceLower incidenceCorrelation observed
Tumor LocationRight-sided CRCs more frequentLeft-sided CRCs more frequentP = 0.043

Key Observations:

  • CK7+ CRCs exhibit dedifferentiation, tumor budding, and micropapillary patterns .

  • Prognostic relevance persists even in multivariate analysis, independent of stage or grade .

Lung Cancer

  • Non-small cell lung cancer (NSCLC): Adenocarcinoma subtypes show CK7+ expression, while squamous cell carcinomas may be CK7- .

  • Small cell lung cancer (SCLC): Rare CK7+ cases, but limited data .

Other Cancers

  • Breast Cancer: CK7+ in ductal carcinomas; CK7- in lobular carcinomas .

  • Urothelial Carcinomas: CK7+ correlates with poor prognosis in some studies .

Comparative Analysis of CK7 Antibodies

AntibodyStrengthsLimitations
RM284 (Rabbit)High specificity, validated in FFPE tissuesLimited species reactivity (human only)
EPR17078 (Rabbit)Broad species compatibility (human/mouse/rat), batch consistencyHigher cost due to recombinant production
OV-TL12/30 (Mouse)Low cross-reactivity, widely used in IHCRequires optimization for WB
Polyclonal (NBP1-33104)Broad epitope recognitionLower specificity, background staining

Product Specs

Buffer
Preservative: 0.03% Proclin 300
Composition: 50% Glycerol, 0.01M PBS, pH 7.4
Form
Liquid
Lead Time
Made-to-order (14-16 weeks)
Synonyms
CKL7 antibody; At5g44100 antibody; MLN1.2Casein kinase 1-like protein 7 antibody; EC 2.7.11.1 antibody; Protein CASEIN KINASE I-LIKE 7 antibody
Target Names
CKL7
Uniprot No.

Target Background

Function
Casein kinases are enzymes characterized by their preference for acidic proteins, such as caseins, as substrates. They possess the ability to phosphorylate a wide range of proteins.
Gene References Into Functions
  1. AtCKL2 and AtCKL7 were found to be expressed in early developmental anthers under high temperature (HT) conditions. PMID: 30145767
Database Links

KEGG: ath:AT5G44100

STRING: 3702.AT5G44100.1

UniGene: At.8708

Protein Families
Protein kinase superfamily, CK1 Ser/Thr protein kinase family, Casein kinase I subfamily
Subcellular Location
Cytoplasm.

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