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Recombinant Human CNTF Protein

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Recombinant Human CNTF (Catalog #257‑NT) stimulates cell proliferation of the TF-1 human erythroleukemic cell line. The ED50 for this effect is 0.03-0.18 μg/mL.
1 μg/lane of Recombinant Human CNTF was resolved with SDS-PAGE under reducing (R) conditions and visualized by silver staining, showing a band at 26 kDa.

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Summary
Reactivity HuSpecies Glossary
Applications Bioactivity

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Recombinant Human CNTF Protein Summary

Details of Functionality
Measured in a cell proliferation assay using TF&#x2011;1 human erythroleukemic cells. Kitamura, T. <EM>et al</EM>. (1989) J. Cell Physiol. <STRONG>140</STRONG>:323.<br />The ED<SUB>50</SUB> for this effect is 0.03-0.18&nbsp;μg/mL.<BR>The proliferative effect can be enhanced up to 100-fold by the addition of Recombinant Human CNTF&#160;R alpha (Catalog&#160;# <a class=NoLineLink href='http://www.rndsystems.com/product_results.aspx?k=303-CR'>303-CR</a>) .<br /><br />
Accession #
N-terminal Sequence
Ala2
Structure / Form

This recombinant protein is prone to proteolytic degradation at the C-terminus, resulting in proteins with molecular masses of 22.2-22.8 kDa.

Protein/Peptide Type
Recombinant Proteins
Gene
CNTF
Endotoxin Note
<0.100 EU per 1 µg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Bioactivity
Theoretical MW
22.8 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
23-26 kDa, reducing conditions
Publications
Read Publications using
257-NT in the following applications:

Packaging, Storage & Formulations

Storage
Store the unopened product at -20 to -70 °C. Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Do not use past expiration date.
Buffer
Lyophilized from a 0.2 μm filtered solution in Tris, NaCl, TCEP, EDTA, CHAPS and Trehalose with BSA as a carrier protein.
Reconstitution Instructions
Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human CNTF Protein

  • ciliary neurotrophic factor
  • CNTF
  • HCNTF

Background

Ciliary neurotrophic factor (CNTF) is a polypeptide initially purified from chick embryo ocular tissue and identified as a trophic factor for embryonic chick ciliary parasympathetic neurons in culture. Subsequent studies have demonstrated that CNTF is a survival factor for additional neuronal cell types including: dorsal root ganglion sensory neurons, sympathetic ganglion neurons, embryonic motor neurons, major pelvic ganglion neurons and hippocampal neurons. CNTF has also been shown to prevent the degeneration of motor axons after axotomy.

The gene for human CNTF has been localized to the proximal region of the long arm of chromosome 11. The cDNA for human CNTF encodes a 200 amino acid residue polypeptide that lacks a signal sequence. CNTF is highly conserved across species and exhibits cross-species activities. Human and rat CNTF share approximately 83% homology in their protein sequence. CNTF is structurally related to IL-6, IL-11, LIF and OSM. All of these four helix bundle cytokines share gp130 as a signal-transducing subunit in their receptor complexes.

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Publications for CNTF (257-NT)(58)

We have publications tested in 4 confirmed species: Human, Mouse, Canine, Chicken.

We have publications tested in 6 applications: Binding Assay, Bioassay, Cell Culture, ELISA (Capture), In Vivo, In vivo assay.


Filter By Application
Binding Assay
(1)
Bioassay
(47)
Cell Culture
(7)
ELISA (Capture)
(1)
In Vivo
(2)
In vivo assay
(1)
All Applications
Filter By Species
Human
(46)
Mouse
(4)
Canine
(1)
Chicken
(7)
All Species
Showing Publications 1 - 10 of 58. Show All 58 Publications.
Publications using 257-NT Applications Species
Sun, Y;Chen, D;Dai, T;Yu, Z;Xie, H;Wang, X;Zhang, W; Cell-free fat extract promotes axon regeneration and retinal ganglion cells survival in traumatic optic neuropathy Frontiers in cellular neuroscience 2024-03-07 [PMID: 38515790] (In vivo assay, Mouse) In vivo assay Mouse
Alves, J;Schwinn, M;Machleidt, T;Goueli, SA;Cali, JJ;Zegzouti, H; Monitoring phosphorylation and acetylation of CRISPR-mediated HiBiT-tagged endogenous proteins Scientific reports 2024-01-25 [PMID: 38272933] (Bioassay, Human) Bioassay Human
Zholudeva, LV;Fortino, T;Agrawal, A;Vila, OF;Williams, M;McDevitt, T;Lane, MA;Srivastava, D; Human spinal interneurons repair the injured spinal cord through synaptic integration bioRxiv : the preprint server for biology 2024-01-12 [PMID: 38260390] (Bioassay, Human) Bioassay Human
Krug, B;Hu, B;Chen, H;Ptack, A;Chen, X;Gretarsson, KH;Deshmukh, S;Kabir, N;Andrade, AF;Jabbour, E;Harutyunyan, AS;Lee, JJY;Hulswit, M;Faury, D;Russo, C;Xu, X;Johnston, MJ;Baguette, A;Dahl, NA;Weil, AG;Ellezam, B;Dali, R;Blanchette, M;Wilson, K;Garcia, BA;Soni, RK;Gallo, M;Taylor, MD;Kleinman, CL;Majewski, J;Jabado, N;Lu, C; H3K27me3 spreading organizes canonical PRC1 chromatin architecture to regulate developmental programs bioRxiv : the preprint server for biology 2023-11-28 [PMID: 38116029] (Bioassay, Human) Bioassay Human
Davis-Anderson, K;Micheva-Viteva, S;Solomon, E;Hovde, B;Cirigliano, E;Harris, J;Twary, S;Iyer, R; CRISPR/Cas9 Directed Reprogramming of iPSC for Accelerated Motor Neuron Differentiation Leads to Dysregulation of Neuronal Fate Patterning and Function International journal of molecular sciences 2023-11-10 [PMID: 38003351] (Bioassay, Human) Bioassay Human
Jovanovic, VM;Weber, C;Slamecka, J;Ryu, S;Chu, PH;Sen, C;Inman, J;De Sousa, JF;Barnaeva, E;Hirst, M;Galbraith, D;Ormanoglu, P;Jethmalani, Y;Mercado, JC;Michael, S;Ward, ME;Simeonov, A;Voss, TC;Tristan, CA;Singeç, I; A defined roadmap of radial glia and astrocyte differentiation from human pluripotent stem cells Stem cell reports 2023-07-04 [PMID: 37451260] (Bioassay, Human) Bioassay Human
MH Berryer, G Rizki, A Nathanson, JA Klein, D Trendafilo, SG Susco, D Lam, A Messana, KM Holton, KW Karhohs, BA Cimini, K Pfaff, AE Carpenter, LL Rubin, LE Barrett High-content synaptic phenotyping in human cellular models reveals a role for BET proteins in synapse assembly Elife, 2023-04-21;12(0):. 2023-04-21 [PMID: 37083703] (Bioassay, Human) Bioassay Human
SD Sharma, BK Reddy, R Pal, TE Ritakari, JD Cooper, BT Selvaraj, PC Kind, S Chandran, DJA Wyllie, S Chattarji Astrocytes mediate cell non-autonomous correction of aberrant firing in human FXS neurons Cell Reports, 2023-04-04;42(4):112344. 2023-04-04 [PMID: 37018073] (Bioassay, Human) Bioassay Human
HW Ong, Y Liang, W Richardson, ER Lowry, CI Wells, X Chen, M Silvestre, K Dempster, JA Silvaroli, JL Smith, H Wichterle, NS Pabla, SK Ultanir, AN Bullock, DH Drewry, AD Axtman A Potent and Selective CDKL5/GSK3 Chemical Probe is Neuroprotective bioRxiv : the preprint server for biology, 2023-02-10;0(0):. 2023-02-10 [PMID: 36798313] (Bioassay, Human) Bioassay Human
GR Linares, Y Li, WH Chang, J Rubin-Sigl, S Mendonca, S Hong, Y Eoh, W Guo, YH Huang, J Chang, S Tu, N Dorjsuren, M Santana, ST Hung, J Yu, J Perez, M Chickering, TY Cheng, CC Huang, SJ Lee, HJ Deng, KT Bach, K Gray, V Subramanya, J Rosenfeld, SV Alworth, H Goodarzi, JK Ichida SYF2 suppression mitigates neurodegeneration in models of diverse forms of ALS Cell Stem Cell, 2023-02-02;30(2):171-187.e14. 2023-02-02 [PMID: 36736291] (Bioassay, Human) Bioassay Human
Show All 58 Publications.

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Bioinformatics

Gene Symbol CNTF
Uniprot