Details

Autor(en) / Beteiligte

• Matsuoka, Taka-Aki
• Kawashima, Satoshi
• Miyatsuka, Takeshi
• Sasaki, Shugo
• Shimo, Naoki
• Katakami, Naoto
• Kawamori, Dan
• Takebe, Satomi
• Herrera, Pedro L
• Kaneto, Hideaki
• Stein, Roland
• Shimomura, Iichiro

Titel

Mafa Enables Pdx1 to Effectively Convert Pancreatic Islet Progenitors and Committed Islet α-Cells Into β-Cells In Vivo

Ist Teil von

• Diabetes (New York, N.Y.), 2017-05, Vol.66 (5), p.1293-1300

Ort / Verlag

United States: American Diabetes Association

Erscheinungsjahr

2017

Quelle

MEDLINE

Beschreibungen/Notizen

• Among the therapeutic avenues being explored for replacement of the functional islet β-cell mass lost in type 1 diabetes (T1D), reprogramming of adult cell types into new β-cells has been actively pursued. Notably, mouse islet α-cells will transdifferentiate into β-cells under conditions of near β-cell loss, a condition similar to T1D. Moreover, human islet α-cells also appear to poised for reprogramming into insulin-positive cells. Here we have generated transgenic mice conditionally expressing the islet β-cell-enriched Mafa and/or Pdx1 transcription factors to examine their potential to transdifferentiate embryonic pan-islet cell Ngn3-positive progenitors and the later glucagon-positive α-cell population into β-cells. Mafa was found to both potentiate the ability of Pdx1 to induce β-cell formation from Ngn3-positive endocrine precursors and enable Pdx1 to produce β-cells from α-cells. These results provide valuable insight into the fundamental mechanisms influencing islet cell plasticity in vivo.