期刊
OXIDATIVE MEDICINE AND CELLULAR LONGEVITY
卷 2019, 期 -, 页码 -出版社
HINDAWI LTD
DOI: 10.1155/2019/5410657
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资金
- Australian Institute of Nuclear Science and Engineering (AINSE) postdoctoral award
- Australian Postgraduate Award (Commonwealth Government of Australia)
- Australian Research Council [DP160100011]
- National Health and Medical Research Council of Australia [APP1099991]
- Flinders Foundation
Alpha-macroglobulins are ancient proteins that include monomeric, dimeric, and tetrameric family members. In humans, and many other mammals, the predominant alpha-macroglobulin is alpha-2-macroglobulin (alpha M-2), a tetrameric protein that is constitutively abundant in biological fluids (e.g., blood plasma, cerebral spinal fluid, synovial fluid, ocular fluid, and interstitial fluid). alpha M-2 is best known for its remarkable ability to inhibit a broad spectrum of proteases, but the full gamut of its activities affects diverse biological processes. For example, alpha M-2 can stabilise and facilitate the clearance of the Alzheimer's disease-associated amyloid beta (A beta) peptide. Additionally, alpha M-2 can influence the signalling of cytokines and growth factors including neurotrophins. The results of several studies support the idea that the functions of alpha M-2 are uniquely regulated by hypochlorite, an oxidant that is generated during inflammation, which induces the native alpha M-2 tetramer to dissociate into dimers. This review will discuss the evidence for hypochlorite-induced regulation of alpha M-2 and the possible implications of this in neuroinflammation and neurodegeneration.
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