MANF: A new mesencephalic, astrocyte-derived neurotrophic factor with selectivity for dopaminergic neurons

Penka S. Petrova, Andrei Raibekas, Jonathan Pevsner, Noel Vigo, Mordechai Anafi, Mary K. Moore, Amy E. Peaire, Viji Shridhar, David I. Smith, John Kelly, Yves Durocher, John W. Commissiong

Research output: Contribution to journalArticlepeer-review

224 Scopus citations


We describe the discovery of a novel, 20 kDa, secreted human protein named mesencephalic astrocyte-derived neurotrophic factor, or MANF. The homologous, native molecule was initially derived from a rat mesencephalic type-1 astrocyte cell line and recombinant MANF subcloned from a cDNA encoding human arginine-rich protein. MANF selectively protects nigral dopaminergic neurons, versus GABAergic or serotonergic neurons. The discovery of MANF marks a more systematic approach in the search for astrocyte-derived, secreted proteins that selectively protect specific neuronal phenotypes. Compared to glial cell line-derived neurotrophic factor (GDNF) and brain-derived neurotrophic factor (BDNF), MANF was more selective in the protection of dopaminergic neurons at lower (0.05-0.25 ng/mL) and middle (0.5-2.5 ng/mL) concentrations: MANF>GDNF>BDNF. GDNF was more selective at higher concentrations (25-50 ng/ml): GDNF>MANF>BDNF. Two domains in MANF of 39-AA and 109-AA respectively, and eight cysteines are conserved from C. elegans to man. MANF is encoded by a 4.3 Kb gene with 4 exons, and is located on the short arm of human chromosome 3. The secondary structure is dominated by α-helices (47%) and random coils (37%). Studies to determine the localization of MANF in the brains of rat, monkey, and man, as well as the receptor, signaling pathways, and biologically active peptide mimetics are in progress. The selective, neuroprotective effect of MANF for dopaminergic neurons suggests that it may be indicated for the treatment of Parkinson's disease.

Original languageEnglish (US)
Pages (from-to)173-187
Number of pages15
JournalJournal of Molecular Neuroscience
Issue number2
StatePublished - Apr 2003


  • Cell line
  • Neuroprotection
  • Novel protein
  • Phenotype specificity
  • Secreted protein
  • Type-1 astrocyte

ASJC Scopus subject areas

  • Cellular and Molecular Neuroscience


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