1. Recombinant Proteins
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  4. CC Chemokines
  5. CCL14
  6. HCC-1/CCL14 Protein, Human (74a.a, His)

HCC-1/CCL14 Protein, Human (74a.a, His) is a CC chemokine with weak activity against human monocytes, promotes monocyte, eosinophil and T-lymphocyte chemotaxis, and mediates allergic airway inflammation and cancer. HCC-1/CCL14 Protein, Human (74a.a, His) is a recombinant human HCC-1/CCL14(T20-N93) expressed by E. coli with a his tag at the nitrogen end.

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Description

HCC-1/CCL14 Protein, Human (74a.a, His) is a CC chemokine with weak activity against human monocytes, promotes monocyte, eosinophil and T-lymphocyte chemotaxis, and mediates allergic airway inflammation and cancer. HCC-1/CCL14 Protein, Human (74a.a, His) is a recombinant human HCC-1/CCL14(T20-N93) expressed by E. coli with a his tag at the nitrogen end[1][2].

Background

CCL14, also known as HCC-1, is a human plasma chemokine originally collected and purified from the hemofiltrate of patients with chronic renal failure. CCL14 belongs to the small cytokine family of CC chemokines, a cluster of chemokines located on human chromosome 17 that can be expressed in a variety of tissues, including spleen, bone marrow, liver, muscle, and intestine. CCL14 has weak activity against human monocytes and no activity against T lymphocytes, neutrophils, and eosinophils. CCL14 is weakly active against human monocytes and inactive against T lymphocytes, neutrophils, and eosinophils.CCL14 acts as a protein precursor that requires protein hydrolysis to obtain receptor affinity and is processed to yield a mature active protein containing 74 amino acids. The processed HCC-1(9-74) is a chemokine that attracts monocytes, eosinophils and T cells and binds to CCR1, CCR3 and CCR5 chemokine receptors[2]. Post-translational modifications of CCL14 chemokines, such as N-terminal truncation and glycosylation, also result in differential signaling compared to unmodified ones. For example, both full-length CCL14(1-74) and truncated isoform CCL14(9-74) bind to atypical chemokine receptor 2 (ACKR2), but only truncated CCL14(9-74) shows a propensity for β-restin and induces receptor internalization of ACKR2 compared to CCL14(1-74). Meanwhile, CCL14(1-74) was a weak agonist of chemokine receptor CCR1, but its activity was significantly enhanced after proteolytic cleavage to CCL14(9-74)[1]. CCL14 has been shown to inhibit HCC cell proliferation by inhibiting cell cycle progression and promoting apoptosis in hepatocellular carcinoma (HCC) cells.CCL14 inhibits HCC tumor growth in nude mice in vivo.CCL14 is also involved in the pathogenesis and progression of various diseases, including allergic airway inflammation and some cancers[2].

In Vitro

CCL14 (1 nM, 22 h) can increase trophoblast adhesion to fibronectin by 3-fold and increase expression of extracellular matrix and adhesion molecules such as collagen COL5A1, matrix metalloproteinase MMP12 in human choriocarcinoma-primary trophoblast hybrid AC1M-88 cell line[3].

Species

Human

Source

E. coli

Tag

N-His

Accession

Q16627-1 (T20-N93)

Gene ID
Molecular Construction
N-term
His
CCL14 (T20-N93)
Accession # Q16627-1
C-term
Synonyms
C-C motif chemokine 14; SCYA14; CCL14; CCL14a; HCC1
Molecular Weight

Approximately 12 kDa

Purity

Greater than 90% as determined by reducing SDS-PAGE

Endotoxin Level

<1 EU/μg, determined by LAL method.

Documentation
References

HCC-1/CCL14 Protein, Human (74a.a, His) Related Classifications

Help & FAQs
  • How should lyophilized recombinant proteins be reconstituted and stored?

    1. Before opening the cap, centrifuge the vial at 13000 rpm for 20-30 seconds. This step will ensure that any lyophilized powder that may have adhered to the cap or walls is collected at the bottom of the vial, minimizing the risk of product loss. 2. Taking 10 μg as an example, first add 20 μL of reconstituted solution provided by MCE and use a pipette to gently resuspend the lyophilized protein until it is fully dissolved.. (For most proteins, the reconstitution solution we provide is sterile water. If a diluent other than water is required, it will be indicated in the product's Certificate of Analysis (COA).). 3. Add an additional 80 μL of buffer/culture medium containing carrier protein (either 0.1% BSA, 5% HSA, 10% FBS, or 5% trehalose), and then use a pipette to gently mix until uniform. The final concentration is should not be lower than 100 μg/mL. 4. Aliquot at least 20 μL per tube. 5. After aliquoting, store it frozen at a temperature ranging from -20ºC to -80ºC, and it can be preserved for 3 to 6 months.

  • How should solution-form recombinant proteins be stored?

    1. The product can be stored in its original form and diluted as needed upon use. 2. Alternatively, dilute with a buffer/culture medium containing a carrier protein (either 0.1% BSA, 5% HSA, 10% FBS, or 5% alginate), mix well by pipetting, and ensure that

  • Why is it necessary to add carrier proteins?

    Carrier proteins are commonly added to enhance the stability of recombinant proteins, preventing them from adhering to the walls of the container during freezing or thawing processes. Plastic tubes have a certain adsorptive capacity for proteins, which may lead to difficulty in separating the protein from the tube walls, resulting in a decrease in the actual concentration of the protein in the solution and thus affecting its activity. To minimize such losses, it is recommended to add a commonly used carrier protein solution prior to the long-term storage of recombinant protein products.

  • Carrier protein types and options?

    In cases where the carrier protein is not expected to influence the experimental outcomes, an appropriate carrier protein, such as 0.1% BSA (Bovine Serum Albumin), 5% HSA (Human Serum Albumin), 10% FBS (Fetal Bovine Serum), or 5% trehalose, can be incorpo

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The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
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The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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Product Name:
HCC-1/CCL14 Protein, Human (74a.a, His)
Cat. No.:
HY-P75148
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