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  • BAG3 (Bcl-2-Associated Athanogene-3) Coding Variant in Mice Determines Susceptibility to Ischemic Limb Muscle Myopathy by Directing Autophagy.

BAG3 (Bcl-2-Associated Athanogene-3) Coding Variant in Mice Determines Susceptibility to Ischemic Limb Muscle Myopathy by Directing Autophagy.

Circulation (2017-04-27)
Joseph M McClung, Timothy J McCord, Terence E Ryan, Cameron A Schmidt, Tom D Green, Kevin W Southerland, Jessica L Reinardy, Sarah B Mueller, Talaignair N Venkatraman, Christopher D Lascola, Sehoon Keum, Douglas A Marchuk, Espen E Spangenburg, Ayotunde Dokun, Brian H Annex, Christopher D Kontos
ABSTRACT

Critical limb ischemia is a manifestation of peripheral artery disease that carries significant mortality and morbidity risk in humans, although its genetic determinants remain largely unknown. We previously discovered 2 overlapping quantitative trait loci in mice, We treated mice with either adeno-associated viruses encoding a control (green fluorescent protein) or 2 BAG3 (Bcl-2-associated athanogene-3) variants, namely Met81 or Ile81, and subjected the mice to hind-limb ischemia. We found that the BAG3 Ile81Met variant in the C57BL/6 (BL6) mouse background segregates with protection from tissue necrosis in a shorter congenic fragment of Taken together, our data demonstrate that genetic variation in BAG3 plays an important role in the prevention of ischemic tissue necrosis. These results highlight a pathway that preserves tissue survival and muscle function in the setting of ischemia.

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MISSION® esiRNA, targeting human BAG3