BDNF (human)

Activates TrkB and p75 receptors CAS# 218441-99-7

BDNF (human)

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Chemical structure

BDNF (human)

Chemical Properties of BDNF (human)

Cas No. 218441-99-7 SDF Download SDF
PubChem ID N/A Appearance Powder
Formula C8H11NO4 M.Wt 185.2
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble in sterile water
Sequence HSDPARRGELSVCDSISEWVTAADKKTAVDMSGGTVTVLEKVPVSKGQLKQYFYETKCNPMGYTKEGCRGIDKRHWNSQCRTTQSYVRALTMDSKKRIGWRFIRIDTSCVCTLTIKRGR
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of BDNF (human)

DescriptionMember of the neurotrophin growth factor family that binds and activates TrkB and p75 neurotrophin receptors. Enhances the survival, growth and differentiation of neurons. BDNF expression is altered in neurodegenerative disorders such as Parkinson's and Alzheimer's disease.

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References on BDNF (human)

Transplantation of RADA16-BDNF peptide scaffold with human umbilical cord mesenchymal stem cells forced with CXCR4 and activated astrocytes for repair of traumatic brain injury.[Pubmed:27592818]

Acta Biomater. 2016 Nov;45:247-261.

Due to the poor self-regeneration of brain tissue, stem cell transplantation therapy is purported to enable the replacement of lost neurons after traumatic brain injury (TBI). The main challenge of brain regeneration is whether the transplanted cells can survive and carry out neuronal functions in the lesion area. The brain is a complex neuronal network consisting of various types of cells that significantly influence on each other, and the survival of the implanted stem cells in brain is critically influenced by the surrounding cells. Although stem cell-based therapy is developing rapidly, most previous studies just focus on apply single type of stem cells as cell source. Here, we found that co-culturing human umbilical cord mesenchymal stem cells (hUC-MSCs) directly with the activated astrocytes benefited to the proliferation and neuron differentiation of hUC-MSCs in vitro. In this study, hUC-MSCs and the activated astrocytes were seeded in RADA16-BDNF peptide scaffold (R-B-SPH scaffold), a specifical self-assembling peptide hydrogel, in which the environment promoted the differentiation of typical neuron-like cells with neurites extending in three-dimensional directions. Moreover, the results showed co-culture of hUC-MSCs and activated astrocytes promoted more BDNF secretion which may benefit to both neural differentiation of ectogenic hUC-MSCs and endogenic neurogenesis. In order to promote migration of the transplanted hUC-MSCs to the host brain, the hUC-MSCs were forced with CXC chemokine receptor 4 (CXCR4). We found that the moderate-sized lesion cavity, but not the large cavity caused by TBI was repaired via the transplantation of hUC-MSCs(CXCR4) and activated astrocytes embedded in R-B-SPH scaffolds. The functional neural repair for TBI demonstrated in this study is mainly due to the transplantation system of double cells, hUC-MSCs and activated astrocytes. We believe that this novel cell transplantation system offers a promising treatment option for cell replacement therapy for TBI. STATEMENT OF SIGNIFICANCE: In this reach, we specifically linked RGIDKRHWNSQ, a functional peptide derived from BDNF, to the C-terminal of RADARADARADARADA (RADA16) to structure a functional self-assembling peptide hydrogel scaffold, RADA16-BDNF (R-B-SPH scaffold) for the better transplantation of the double cell unit. Also, the novel scaffold was used as cell-carrier for transplantation double cell unit (hUC-MSCs/astrocyte) for treating traumatic brain injury. The results of this study showing that R-B-SPH scaffold was pliancy and flexibility to fit the brain lesion cavity and promotes the outgrowth of axons and dendrites of the neurons derived from hUC-MSCs in vitro and in vivo, indicating the 3D R-B-SPH scaffold provided a suitable microenvironment for hUC-MSC survival, proliferation and differentiation. Also, our results showing the double-cells transplantation system (hUC-MSCs/astrocyte) may be a novel cell-based therapeutic strategy for neuroregeneration after TBI with potential value for clinical application.

The human BDNF gene: peripheral gene expression and protein levels as biomarkers for psychiatric disorders.[Pubmed:27874848]

Transl Psychiatry. 2016 Nov 22;6(11):e958.

Brain-derived neurotrophic factor (BDNF) regulates the survival and growth of neurons, and influences synaptic efficiency and plasticity. The human BDNF gene consists of 11 exons, and distinct BDNF transcripts are produced through the use of alternative promoters and splicing events. The majority of the BDNF transcripts can be detected not only in the brain but also in the blood cells, although no study has yet investigated the differential expression of BDNF transcripts at the peripheral level. This review provides a description of the human BDNF gene structure as well as a summary of clinical and preclinical evidence supporting the role of BDNF in the pathogenesis of psychiatric disorders. We will discuss several mechanisms as possibly underlying BDNF modulation, including epigenetic mechanisms. We will also discuss the potential use of peripheral BDNF as a biomarker for psychiatric disorders, focusing on the factors that can influence BDNF gene expression and protein levels. Within this context, we have also characterized, for we believe the first time, the expression of BDNF transcripts in the blood, with the aim to provide novel insights into the molecular mechanisms and signaling that may regulate peripheral BDNF gene expression levels.

Pharmacologically active microcarriers delivering BDNF within a hydrogel: Novel strategy for human bone marrow-derived stem cells neural/neuronal differentiation guidance and therapeutic secretome enhancement.[Pubmed:27865962]

Acta Biomater. 2017 Feb;49:167-180.

Stem cells combined with biodegradable injectable scaffolds releasing growth factors hold great promises in regenerative medicine, particularly in the treatment of neurological disorders. We here integrated human marrow-isolated adult multilineage-inducible (MIAMI) stem cells and pharmacologically active microcarriers (PAMs) into an injectable non-toxic silanized-hydroxypropyl methylcellulose (Si-HPMC) hydrogel. The goal is to obtain an injectable non-toxic cell and growth factor delivery device. It should direct the survival and/or neuronal differentiation of the grafted cells, to safely transplant them in the central nervous system, and enhance their tissue repair properties. A model protein was used to optimize the nanoprecipitation conditions of the neuroprotective brain-derived neurotrophic factor (BDNF). BDNF nanoprecipitate was encapsulated in fibronectin-coated (FN) PAMs and the in vitro release profile evaluated. It showed a prolonged, bi-phasic, release of bioactive BDNF, without burst effect. We demonstrated that PAMs and the Si-HPMC hydrogel increased the expression of neural/neuronal differentiation markers of MIAMI cells after 1week. Moreover, the 3D environment (PAMs or hydrogel) increased MIAMI cells secretion of growth factors (b-NGF, SCF, HGF, LIF, PlGF-1, SDF-1alpha, VEGF-A & D) and chemokines (MIP-1alpha & beta, RANTES, IL-8). These results show that PAMs delivering BDNF combined with Si-HPMC hydrogel represent a useful novel local delivery tool in the context of neurological disorders. It not only provides neuroprotective BDNF but also bone marrow-derived stem cells that benefit from that environment by displaying neural commitment and an improved neuroprotective/reparative secretome. It provides preliminary evidence of a promising pro-angiogenic, neuroprotective and axonal growth-promoting device for the nervous system. STATEMENT OF SIGNIFICANCE: Combinatorial tissue engineering strategies for the central nervous system are scarce. We developed and characterized a novel injectable non-toxic stem cell and protein delivery system providing regenerative cues for central nervous system disorders. BDNF, a neurotrophic factor with a wide-range effect, was nanoprecipitated to maintain its structure and released in a sustained manner from novel polymeric microcarriers. The combinatorial 3D support, provided by fibronectin-microcarriers and the hydrogel, to the mesenchymal stem cells guided the cells towards a neuronal differentiation and enhanced their tissue repair properties by promoting growth factors and cytokine secretion. The long-term release of physiological doses of bioactive BDNF, combined to the enhanced secretion of tissue repair factors from the stem cells, constitute a promising therapeutic approach.

Long noncoding RNA BDNF-AS is a potential biomarker and regulates cancer development in human retinoblastoma.[Pubmed:28131827]

Biochem Biophys Res Commun. 2018 Mar 18;497(4):1142-1148.

BACKGROUND: Long non-coding RNAs (lncRNA) have been shown to play important roles in human cancer. We examined expression, prognostic potential and functional roles of lncRNA, brain-derived neurotrophic factor antisense (BDNF-AS) in human retinoblastoma (RB). METHODS: BDNF-AS expression in RB tumors was characterized according to the clinicopathological parameters of patients. BDNF-AS mRNA level was compared between RB tumors and normal retinas, as well as RB cell lines and normal retinal epithelial cells. RB patients' overall survival was compared between those with low and high BDNF-AS tumor expressions. Statistical analysis was performed to examine the independence of BDNF-AS being cancer biomarker in RB. In Y79 and WERI-Rb-1 cells, BDNF-AS was upregulated. It's effect on cancer proliferation, migration and cell-cycle transition were assessed. RESULTS: BDNF-AS is downregulated in RB tumors and cell lines. Low BDNF-AS expression in RB tumors is correlated with patients' advanced clinical stage and tumor differentiation status. Low BDNF-AS expression is associated with shorter overall survival and may be acting as an independent marker in RB. In Y79 and WERI-Rb-1 cells, forced overexpression of BDNF-AS inhibited cancer proliferation and migration. It also induced cell-cycle arrest at G0/G1 phase by downregulating CDC42, Cyclin E and BDNF. CONCLUSION: BDNF-AS is lowly expressed, and may be used as a prognostic biomarker in RB. Upregulating BDNF-AS has inhibitory effect on RB development, probably through the suppression of cell-cycle transition.

Neurotrophic factors as a therapeutic target for Parkinson's disease.[Pubmed:18348680]

Expert Opin Ther Targets. 2008 Apr;12(4):437-47.

BACKGROUND: The search for therapeutic agents that might alter the disease course in Parkinson's disease (PD) is ongoing. One area of particular interest involves neurotrophic factors (NTFs), with those of the glial cell line-derived neurotrophic factor (GDNF) family showing greatest promise. The safety and efficacy of these therapies has recently come into question. Furthermore, many of the key questions pertaining to such therapies, such as the optimal method of delivery, timing of treatment and selection of patients most likely to benefit, remain unanswered. OBJECTIVE: In this review we sought to evaluate the therapeutic potential of NTFs in the treatment of PD. We appraised the evidence provided by both in vitro and in vivo work before proceeding to a critical assessment of the relevant clinical trial data. METHODS: Relevant literature was identified using a PubMed search of articles published up to October 2007. Search terms included: 'Parkinson's disease', 'Neurotrophic factors', 'BDNF' (Brain-derived neurotrophic factor), 'GDNF' and 'Neurturin'. Original articles were reviewed, and relevant citations from these articles were also appraised. CONCLUSION: NTF therapy has potential in the treatment of nigrostriatal dysfunction in PD but numerous methodological and safety issues will need to be addressed before this approach can be widely adopted. Furthermore PD is now recognized as being more than a pure motor disorder, and one in which neuronal loss is not just confined to the dopaminergic nigrostriatal system. Non-motor symptomatology in PD is unlikely to benefit from therapies that target only the nigrostriatal system, and this must inform our thinking as to the maximal achievable benefit that NTFs are ever likely to provide.

Brain-derived neurotrophic factor in neuronal survival and behavior-related plasticity.[Pubmed:18077569]

Ann N Y Acad Sci. 2007 Dec;1122:130-43.

Neurotrophins are critical to the development and maintenance of the mammalian central nervous system. Among them is brain-derived neurotrophic factor (BDNF), whose synthesis and release is targeted by activation of glutamate receptors. Perturbation of this process probably underlies neurodegenerative and psychiatric disorders. A naturally occurring variation in humans, in the form of a common single-nucleotide polymorphism in the pro region of the polypeptide at codon 66 (Val66-->Met), affects processing of the pro-BDNF polypeptide and its activation-dependent release. This variant is associated with differences in the volume of the hippocampal formation and with anxiety and depression-related phenotypes. Convergent findings supporting a role for BDNF in alterations to hippocampal structure and behavior are found in a "humanized" BDNF transgenic mouse. Also, recent human genetic studies have supported a role of BDNF signaling in addictive behaviors by allele-, genotype-, and haplotype-based association of the TrkB gene, which encodes the cognate receptor for BDNF, with alcohol dependence. A better understanding of the influence of BDNF-mediated pathways in cell survival and plasticity will aid in developing new approaches to restoring normal function in disease states.

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