{"id":15870,"date":"2011-04-30T04:47:58","date_gmt":"2011-04-30T08:47:58","guid":{"rendered":"http:\/\/asweetlife.org\/?p=15870"},"modified":"2015-12-30T03:39:34","modified_gmt":"2015-12-30T08:39:34","slug":"researchers-discover-mechanism-that-converts-certain-cells-into-insulin-producing-beta-cells","status":"publish","type":"post","link":"https:\/\/asweetlife.org\/?p=15870","title":{"rendered":"Researchers Discover Mechanism That Converts Certain Cells into Insulin Producing Beta Cells"},"content":{"rendered":"
\"\"<\/a>Researchers from UCLA’s Larry L. Hillblom Islet Research Center have discovered the underlying mechanism that could convert other cell types into pancreatic beta cells.<\/p>\n
\n
It had long been assumed that the identity of cells was “locked” into place and that they could not be switched into other cell types. But recent studies have shown that some types of cells can be coaxed into changing into others \u2014 findings that have intensified interest in understanding the mechanisms that maintain beta cell identity.<\/div>\n

The UCLA researchers show that chemical tags called “methyl groups” that bind to DNA \u2014 where they act like a volume knob, turning up or down the activity of certain genes \u2014 are crucial to understanding how cells can be converted into insulin-secreting beta cells. They show that DNA methylation keeps ARX, a gene that triggers the formation of glucagon-secreting alpha cells in the embryonic pancreas, silent in beta cells.
Deletion of\u00a0Dnmt1, the enzyme responsible for DNA methylation, from insulin-producing beta cells converts them into alpha cells.<\/p>\n<\/div>\n<\/div>\n

These findings suggest that a defect in beta cells’ DNA methylation process interferes with their ability to maintain their “identity.” So if this “epigenetic mechanism,” as the researchers call it, can produce alpha cells, there may be an analogous mechanism that can produce beta cells that would maintain blood sugar equilibrium.<\/p>\n

Source: http:\/\/www.uclahealth.org <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Researchers from UCLA’s Larry L. Hillblom Islet Research Center have discovered the underlying mechanism that could convert other cell types into pancreatic beta cells.
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