CDNF Human

Cerebral Neurotrophic Factor Human Recombinant
Cat. No.
BT7260
Source
Escherichia Coli.
Synonyms

Cerebral neurotrophic factor, arginine-rich, mutated in early stage tumors-like 1, Conserved neurotrophic factor, ARMET-like protein 1, ARMETL1.

Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Purity
Greater than 96.0% 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

CDNF Human Recombinant produced in E.coli is a single, non-glycosylated polypeptide chain containing 161 amino acids and having a molecular mass of 18.5kDa.
The CDNF is purified by proprietary chromatographic techniques.

Product Specs

Introduction

CDNF, a protein in the ARMET family, supports neuron health and function. It protects neurons from damage caused by 6-OHDA, a toxin that induces neuron degeneration. In cases where CDNF is administered after 6-OHDA-induced injury, it helps restore neuronal function and prevent further degeneration in a brain region called the substantia nigra. CDNF is found throughout the body, in both nerve and non-nerve tissues. Within the brain, its highest concentrations are in the optic nerve and corpus callosum.

Description
Recombinant human CDNF, produced in E. coli bacteria, is a single-chain polypeptide that lacks glycosylation. It consists of 161 amino acids and has a molecular weight of 18.5 kDa. The purification process of CDNF involves specialized chromatographic techniques.
Physical Appearance
The product appears as a sterile, white powder that has been freeze-dried.
Formulation
The CDNF protein was freeze-dried from a 0.2 µm filtered solution containing a concentration of 1xPBS at a pH of 7.4.
Solubility
For reconstitution, it is advised to dissolve the lyophilized CDNF in sterile 18 megaohm-centimeter (MΩ·cm) H₂O to a concentration not lower than 100 µg/ml. This solution can then be further diluted with other aqueous solutions as needed.
Stability
Lyophilized CDNF remains stable at room temperature for up to 3 weeks. However, it is recommended to store the lyophilized product in a dry environment below -18°C for long-term storage. Once reconstituted, CDNF should be stored at 4°C for 2-7 days. For storage beyond 7 days, it is advised to freeze the solution below -18°C. The addition of a carrier protein like HSA or BSA (0.1%) is recommended for long-term storage. It is crucial to avoid repeated freezing and thawing of the product.
Purity
The purity of CDNF is greater than 96.0%, as determined by the following methods:
(a) Analysis using Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC).
(b) Analysis by Sodium Dodecyl Sulfate-Polyacrylamide Gel Electrophoresis (SDS-PAGE).
Biological Activity
The ED50, defined as the effective concentration at which CDNF stimulates the proliferation of rat C6 cells by 50%, is in the range of 15-25 µg/ml. This corresponds to a specific activity of 40-67 units/mg.
Synonyms

Cerebral neurotrophic factor, arginine-rich, mutated in early stage tumors-like 1, Conserved neurotrophic factor, ARMET-like protein 1, ARMETL1.

Source
Escherichia Coli.
Amino Acid Sequence
QEAGGRPGAD CEVCKEFLNR FYKSLIDRGV NFSLDTIEKE LISFCLDTKG KENRLCYYLG ATKDAATKIL SEVTRPMSVH MPAMKICEKL KKLDSQICEL KYEKTLDLAS VDLRKMRVAE LKQILHSWGE ECRACAEKTD YVNLIQELAP KYAATHPKTE L

Product Science Overview

Introduction

Cerebral Neurotrophic Factor (CNF), also known as Brain-Derived Neurotrophic Factor (BDNF), is a member of the neurotrophin family. Neurotrophins are a group of proteins that play a crucial role in the growth, development, differentiation, and survival of neurons. BDNF, in particular, is essential for the maintenance and function of the central and peripheral nervous systems.

Structure and Function

BDNF is a homodimeric protein, meaning it consists of two identical subunits. Each subunit is composed of 119 amino acids, resulting in a total molecular mass of approximately 27 kDa . The protein is non-glycosylated and is typically produced in Escherichia coli (E. coli) for recombinant applications .

BDNF binds with high affinity to the TrkB (tropomyosin receptor kinase B) receptor on the surface of neurons. This binding activates several intracellular signaling pathways that promote neuronal survival, growth, and differentiation . BDNF is also involved in synaptic plasticity, which is the ability of synapses to strengthen or weaken over time, a process essential for learning and memory .

Biological Activity

BDNF has been shown to support the survival of existing neurons and encourage the growth and differentiation of new neurons and synapses . It is highly expressed in the hippocampus, cortex, and basal forebrain—areas vital for learning, memory, and higher cognitive functions . Additionally, BDNF is found in the pituitary gland, spinal cord, heart, lung, and skeletal muscle .

Applications

Recombinant human BDNF is widely used in research and clinical applications. Some of its key uses include:

  • Cell Culture: BDNF is used to promote the growth and differentiation of neuronal cells in vitro .
  • Neuroprotection: It is studied for its potential to protect neurons from damage in various neurodegenerative diseases .
  • Regenerative Medicine: BDNF is explored for its ability to stimulate axon outgrowth and repair damaged neural tissues .
Production and Purification

Recombinant human BDNF is typically produced in E. coli and purified using proprietary chromatographic techniques . The protein is supplied in a lyophilized (freeze-dried) form and can be reconstituted in sterile water for use in various applications . The purity of recombinant BDNF is generally greater than 97%, as determined by reverse-phase high-performance liquid chromatography (RP-HPLC) and sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) .

Stability and Storage

Lyophilized BDNF is stable at room temperature for up to three weeks but should be stored desiccated below -18°C for long-term storage . Upon reconstitution, BDNF should be stored at 4°C for short-term use (2-7 days) and below -18°C for long-term use . It is recommended to add a carrier protein, such as human serum albumin (HSA) or bovine serum albumin (BSA), to prevent freeze-thaw cycles .

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