CNTF Protein, Human (His)
Based on 1 Customer Validation
CNTF is a pluripotent neurotrophic factor, belonging to the IL-6 cytokine family. CNTF could protect retinal cone and rod photoreceptors. CNTF has neuroprotective effects on a variety of central and also peripheral nervous system neurons. CNTF Protein, Human (His) is produced by E. coli (A2-M200) with N-terminal His-tag.
- Species: Human
- Source: E. coli
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Storage:Stored at -80°C for 1 year from date of receipt. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.
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Biological Activity
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Technical Parameters
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Product Properties
- Documentation
- References
- Help & FAQs
Biological Activity
CNTF is a pluripotent neurotrophic factor, belonging to the IL-6 cytokine family[1]. CNTF could protect retinal cone and rod photoreceptors[2]. CNTF has neuroprotective effects on a variety of central and also peripheral nervous system neurons[3]. CNTF Protein, Human (His) is produced by E. coli (A2-M200) with N-terminal His-tag.
Ciliary Neurotrophic Factor (CNTF) belongs to the IL-6 cytokine family. IL-6, IL-11 and CNTF are associated with cytokine trans signaling. CNTF shows a low affinity interaction with IL-6 receptor subunit alpha (IL-6Rα), leading to the formation and activation of the IL-6Rβ/gp130/LIFR signaling receptor complex[1]. CNTF is also an extracellular signaling protein in the neuroretinal and the interphotoreceptor matrix, which is associated with the membranes of the RPE, Muller and photoreceptor cells[2]. CNTF has neuroprotective effects on a variety of central and also peripheral nervous system neurons. Because it promotes differentiation and maturation of oligodendrocyte precursor cells to oligodendrocytes under in vitro conditions and thus improves remyelination. Importantly, it also increases the survival of mature oligodendrocytes[3]. The similarity of human CNTF protein sequences to mice and rats was 81.82% and 84.0%, respectively.
CNTF (human; 2 ng/mL; 3 d) significantly inhibits the activity of choline acetyltransferase (ChAT) in mesencephalic cultures[4].
Measured in a cell proliferation assay using TF-1 human erythroleukemic cells. The ED50 for this effect is typically 1-4 μg/mL.
Technical Parameters
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Species Human
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Source E. coli
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Tag N-His
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Accession
P26441 (A2-M200)
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Molecular Construction
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N-term
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His
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CNTF (A2-M200)
Accession # P26441 -
C-term
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Protein Length
Partial
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Synonyms
CNTF; HCNTF; Ciliary Neurotrophic Factor; Ciliary Neuronotrophic Factor
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AA Sequence
AFTEHSPLTPHRRDLCSRSIWLARKIRSDLTALTESYVKHQGLNKNINLDSADGMPVASTDQWSELTEAERLQENLQAYRTFHVLLARLLEDQQVHFTPTEGDFHQAIHTLLLQVAAFAYQIEELMILLEYKIPRNEADGMPINVGDGGLFEKKLWGLKVLQELSQWTVRSIHDLRFISSHQTGIPARGSHYIANNKKM
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Predicted Molecular Mass
24.5 kDa
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Molecular Weight
Approximately 27-30 kDa, based on SDS-PAGE under reducing conditions.
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Purity
≥ 90%, as determined by reducing SDS-PAGE.
Product Properties
Solution
Supplied as a 0.22 μm filtered solution of PBS, pH 7.4.
<1 EU/μg, determined by LAL method.
Stored at -80°C for 1 year from date of receipt. It is stable at -20°C for 3 months after opening. It is recommended to freeze aliquots at -80°C for extended storage. Avoid repeated freeze-thaw cycles.
Shipping with dry ice.
Documentation
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Data Sheet (263 KB)
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SDS (251 KB)
- English - EN (251 KB)
- Français - FR (251 KB)
- Deutsch - DE (251 KB)
- Norwegian - NO (251 KB)
- Español - ES (251 KB)
- Swedish - SV (251 KB)
- Italian - IT (251 KB)
- Korean - KR (251 KB)
- Portuguese - PT (251 KB)
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Handling Instructions (2659 KB)
References
[1]. Jones SA, et al. Recent insights into targeting the IL-6 cytokine family in inflammatory diseases and cancer. Nat Rev Immunol. 2018 Dec;18(12):773-789. [Content Brief]
[2]. Li S, et al. Ciliary neurotrophic factor (CNTF) protects retinal cone and rod photoreceptors by suppressing excessive formation of the visual pigments. J Biol Chem. 2018 Sep 28;293(39):15256-15268. [Content Brief]
[3]. Abbaszadeh HA, et al. Human ciliary neurotrophic factor-overexpressing stable bone marrow stromal cells in the treatment of a rat model of traumatic spinal cord injury. Cytotherapy. 2015 Jul;17(7):912-21. [Content Brief]
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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