CNTF Mouse

Ciliary-Neurotrophic Factor Mouse Recombinant
Cat. No.
BT7702
Source
Escherichia Coli.
Synonyms
HCNTF, CNTF, Ciliary Neurotrophic Factor.
Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Purity
Greater than 97.0% as determined by:
(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.
Usage
THE BioTek's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.
Shipped with Ice Packs
In Stock

Description

Ciliary Neurotrophic Factor Recombinant Mouse produced in E.Coli is a single, non-glycosylated polypeptide chain containing 198 amino acids and having a molecular mass of 22.6kDa.
The CNTF is purified by proprietary chromatographic techniques.

Product Specs

Introduction
Ciliary neurotrophic factor (CNTF) is a polypeptide hormone primarily active in the nervous system. It promotes neurotransmitter production and neurite development in specific neuron populations. CNTF is a potent survival factor for neurons and oligodendrocytes, potentially mitigating tissue damage during inflammation. A gene mutation causing aberrant splicing can lead to CNTF deficiency, though its link to neurological diseases remains unclear. While predominantly transcribed from a single gene, CNTF can be co-transcribed with the ZFP91 gene. This co-transcription produces a transcript with a complete zinc finger protein coding region but an incomplete CNTF coding region. CNTF is vital for the survival of diverse neuronal cell types and may prevent motor axon degeneration post-injury.
Description
Recombinant Mouse Ciliary Neurotrophic Factor, produced in E. coli, is a single, non-glycosylated polypeptide chain comprising 198 amino acids. It has a molecular mass of 22.6 kDa. The CNTF undergoes purification using proprietary chromatographic methods.
Physical Appearance
Sterile Filtered White lyophilized powder.
Formulation
Lyophilized from a 0.2 µm filtered concentrated solution in phosphate-buffered saline (PBS) at pH 7.4.
Solubility
Reconstitute the lyophilized CNTF in sterile 18 MΩ-cm H2O at a concentration of at least 100 µg/ml. This solution can be further diluted in other aqueous solutions.
Stability
Lyophilized Ciliary Neurotrophic Factor remains stable at room temperature for up to 3 weeks. For long-term storage, store desiccated below -18°C. Reconstituted CNTF should be stored at 4°C for 2-7 days. For future use, store below -18°C. Avoid repeated freeze-thaw cycles.
Purity
Purity exceeds 97.0% as determined by:
(a) Reverse-phase high-performance liquid chromatography (RP-HPLC) analysis.
(b) Sodium dodecyl-sulfate polyacrylamide gel electrophoresis (SDS-PAGE) analysis.
Biological Activity
Exhibits full biological activity compared to the standard. The half-maximal effective concentration (ED50), determined by the dose-dependent stimulation of TF-1 cells, is less than 35 ng/ml. This corresponds to a Specific Activity of 3.0 x 104 IU/mg.
Synonyms
HCNTF, CNTF, Ciliary Neurotrophic Factor.
Source
Escherichia Coli.
Amino Acid Sequence
MAFAEQSPLT LHRRDLCSRS IWLARKIRSD LTALMESYVK HQGLNKNISL DSVDGVPVAS TDRWSEMTEA ERLQENLQAY RTFQGMLTKL LEDQRVHFTP TEGDFHQAIH TLTLQVSAFA YQLEELMALL EQKVPEKEAD GMPVTIGDGG LFEKKLWGLK VLQELSQWTV RSIHDLRVIS SHHMGISAHE SHYGAKQM

Product Science Overview

Introduction

Ciliary Neurotrophic Factor (CNTF) is a polypeptide hormone that plays a crucial role in the nervous system. It was initially identified as a trophic factor for embryonic chick ciliary parasympathetic neurons in culture . CNTF is a member of the interleukin-6 family of cytokines and is produced by astrocytes following brain injury . The recombinant form of CNTF, specifically derived from mice, has been extensively studied for its various biological effects and therapeutic potential.

Structure and Function

CNTF is a potent survival factor for neurons and oligodendrocytes, promoting neurotransmitter synthesis and neurite outgrowth in certain neuronal populations . It supports the survival of a variety of neuronal populations, including motor neurons, and has been shown to reduce tissue destruction during inflammatory attacks . CNTF exerts its effects by binding to a receptor complex that includes the CNTF receptor alpha (CNTFRα), which can be induced by interferon-gamma (IFNγ) .

Mechanism of Action

CNTF activates several signaling pathways, including the Janus kinase 2 (JAK2) and signal transducer and activator of transcription 3 (STAT3) pathways . In mouse models, CNTF has been shown to activate these pathways in hypothalamic arcuate neurons, promoting leptin entry into and action on the hypothalamus . This activation leads to a reduction in food intake and body weight, suggesting a potential role for CNTF in regulating energy balance and metabolism.

Therapeutic Potential

The therapeutic potential of CNTF has been explored in various contexts. It has been regarded as a potent trophic factor for motor neurons, and recent studies have shown that CNTF also exerts effects on glial cells, such as astrocytes and microglia . For instance, CNTF stimulates astrocytes to secrete fibroblast growth factor-2 (FGF-2) and rat microglia to secrete glial cell line-derived neurotrophic factor (GDNF), indirectly promoting motor neuron survival . Additionally, CNTF has been shown to enhance microglial cyclooxygenase-2 (Cox-2) protein expression and prostaglandin E2 (PGE2) secretion .

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