Human pancreatic β-cell G1/S molecule cell cycle atlas.
Human pancreatic β-cell G1/S molecule cell cycle atlas.
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DOI:
10.2337/db12-0777
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发表时间:
2013-07
期刊:
影响因子:
7.7
通讯作者:
Stewart AF
中科院分区:
文献类型:
--
作者:
Fiaschi-Taesch NM;Kleinberger JW;Salim FG;Troxell R;Wills R;Tanwir M;Casinelli G;Cox AE;Takane KK;Scott DK;Stewart AF
Expansion of pancreatic β-cells is a key goal of diabetes research, yet induction of adult human β-cell replication has proven frustratingly difficult. In part, this reflects a lack of understanding of cell cycle control in the human β-cell. Here, we provide a comprehensive immunocytochemical “atlas” of G1/S control molecules in the human β-cell. This atlas reveals that the majority of these molecules, previously known to be present in islets, are actually present in the β-cell. More importantly, and in contrast to anticipated results, the human β-cell G1/S atlas reveals that almost all of the critical G1/S cell cycle control molecules are located in the cytoplasm of the quiescent human β-cell. Indeed, the only nuclear G1/S molecules are the cell cycle inhibitors, pRb, p57, and variably, p21: none of the cyclins or cdks necessary to drive human β-cell proliferation are present in the nuclear compartment. This observation may provide an explanation for the refractoriness of human β-cells to proliferation. Thus, in addition to known obstacles to human β-cell proliferation, restriction of G1/S molecules to the cytoplasm of the human β-cell represents an unanticipated obstacle to therapeutic human β-cell expansion.
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影响因子:
7.7
作者:
Cozar-Castellano, I;Takane, KK;Stewart, AF
通讯作者:
Stewart, AF
影响因子:
64.8
作者:
Dor, Y;Brown, J;Melton, DA
通讯作者:
Melton, DA
影响因子:
8.2
作者:
Butler, A. E.;Cao-Minh, L.;Galasso, R.;Rizza, R. A.;Corradin, A.;Cobelli, C.;Butler, P. C.
通讯作者:
Butler, P. C.
影响因子:
7.7
作者:
Guthalu Kondegowda N;Joshi-Gokhale S;Harb G;Williams K;Zhang XY;Takane KK;Zhang P;Scott DK;Stewart AF;Garcia-Ocaña A;Vasavada RC
通讯作者:
Vasavada RC
影响因子:
7.7
作者:
Butler, AE;Janson, J;Butler, PC
通讯作者:
Butler, PC