Bone morphogenetic proteins but not growth differentiation factors induce dopaminergic differentiation in mesencephalic precursors.

• Bone morphogenetic proteins (BMPs) and growth differentiation factors (GDFs) are potential therapeutic molecules for the treatment of Parkinson's disease (PO). Here we compare the effects of BMP3, 5, 6, and 7 and GDF5 and 6 in a rat mesencephalic cell culture system that reflects the developmental stage of neurons around birth. High concentrations of BMP5, 6, and 7 and GDF5 and 6 induced astroglial cell fate and a depletion of oligodendrocytes. Only BMP5, 6, and 7, however, significantly increased the number of tyrosine hydroxylase (TH)-positive neurons and induced nuclear translocation of the phosphorylated BMP-restricted Smad in a substantial number of TH- and microtubule-associated protein 2(MAP2ab)-positive cells. None of the proteins protected TH-positive cells against 6-hydroxydopamine-induced oxidative stress. BMP3 was without any effect throughout the studies. We conclude that BMP5, 6, and 7 act directly and independently on precursors of the dopaminergic and astroglial lineage and induce their differentiation. In contrast, GDF5 and 6 primarily affect nonneuronal cells in mesencephalic cultures of this stage.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Medicinska och farmaceutiska grundvetenskaper (hsv//swe)

MEDICAL AND HEALTH SCIENCES  -- Basic Medicine (hsv//eng)

Nyckelord

Animals

Bone Morphogenetic Proteins

pharmacology

therapeutic use

Brain Tissue Transplantation

Cell Differentiation

drug effects

physiology

Cell Survival

drug effects

physiology

Cells

Cultured

Dopamine

metabolism

Dose-Response Relationship

Drug

Fetus

Graft Survival

drug effects

physiology

Growth Substances

pharmacology

therapeutic use

Neurons

cytology

drug effects

metabolism

Neuroprotective Agents

pharmacology

Oligodendroglia

cytology

drug effects

metabolism

Oxidopamine

pharmacology

Parkinson Disease

therapy

Rats

Rats

Sprague-Dawley

Stem Cells

cytology

drug effects

metabolism

Substantia Nigra

cytology

drug effects

embryology

Tyrosine 3-Monooxygenase

metabolism

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)