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New research out on MANF - January 2017: "Super-MA

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Post# of 30070
(Total Views: 645)
Posted On: 01/31/2017 11:59:08 PM
Posted By: Orioles1
New research out on MANF - January 2017: "Super-MANF to the Rescue: Immunomodulation Improves Retinal Repair and Regenerative Cell Therapy."

ABSTRACT: Neves et al identify MANF as an evolutionarily conserved factor in Drosophila and mice that stimulates alternative activation of innate immune cells to facilitate tissue repair following retinal damage, delays congenital forms of retinal degeneration, and promotes engraftment of transplanted retinal cells, improving visual function.

Article 2 - also January 2017

"Long-Term Protective Effects of AAV9-Mesencephalic Astrocyte-Derived Neurotrophic Factor Gene Transfer in Parkinsonian Rats."

ABSTRACT: Intrastriatal injection of mesencephalic astrocyte-derived neurotrophic factor (MANF) protein has been shown to provide neuroprotective and neurorestorative effects in a 6-hydroxydopamine (6-OHDA) - lesioned rat model of Parkinson's disease. Here, we used an adeno-associated virus serotype 9 (AAV9) vector to deliver the human MANF (hMANF) gene into the rat striatum 10 days after a 6-OHDA lesion to examine long-term effects of hMANF on nigral dopaminergic neurons and mechanisms underlying MANF neuroprotection. Intrastriatal injection of AAV9-hMANF vectors led to a robust and widespread expression of the hMANF gene in the injected striatum up to 24 weeks. Increased levels of hMANF protein were also detected in the ipsilateral substantia nigra. The hMANF gene transfer promoted the survival of nigral dopaminergic neurons, regeneration of striatal dopaminergic fibers and an upregulation of striatal dopamine levels, resulting in a long-term improvement of rotational behavior up to 16 weeks after viral injections. By using SH-SY5Y cells, we found that intra- and extracellular application of MANF protected cells against 6-OHDA-induced toxicity via inhibiting the endoplasmic reticulum stress and activating the PI3K/Akt/mTOR pathway. Our results suggest that AAV9-mediated hMANF gene delivery into the striatum exerts long-term neuroprotective and neuroregenerative effects on the nigrostriatal dopaminergic system in parkinsonian rats, and provide insights into mechanisms responsible for MANF neuroprotection.


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