Cyclin D3 drives inertial cell cycling in dark zone germinal center B cells.
Cyclin D3 drives inertial cell cycling in dark zone germinal center B cells.
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DOI:
10.1084/jem.20201699
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发表时间:
2021-04-05
期刊:
影响因子:
--
通讯作者:
Victora GD
中科院分区:
文献类型:
--
作者:
Pae J;Ersching J;Castro TBR;Schips M;Mesin L;Allon SJ;Ordovas-Montanes J;Mlynarczyk C;Melnick A;Efeyan A;Shalek AK;Meyer-Hermann M;Victora GD
Cyclin D3 drives a unique form of “inertial” cell cycling responsible for clonal expansion of B cells in the germinal center dark zone. During affinity maturation, germinal center (GC) B cells alternate between proliferation and somatic hypermutation in the dark zone (DZ) and affinity-dependent selection in the light zone (LZ). This anatomical segregation imposes that the vigorous proliferation that allows clonal expansion of positively selected GC B cells takes place ostensibly in the absence of the signals that triggered selection in the LZ, as if by “inertia.” We find that such inertial cycles specifically require the cell cycle regulator cyclin D3. Cyclin D3 dose-dependently controls the extent to which B cells proliferate in the DZ and is essential for effective clonal expansion of GC B cells in response to strong T follicular helper (Tfh) cell help. Introduction into the Ccnd3 gene of a Burkitt lymphoma–associated gain-of-function mutation (T283A) leads to larger GCs with increased DZ proliferation and, in older mice, clonal B cell lymphoproliferation, suggesting that the DZ inertial cell cycle program can be coopted by B cells undergoing malignant transformation.
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DOI:
10.1126/science.aac4919
发表时间:
2015-08-07
期刊:
Science (New York, N.Y.)
影响因子:
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作者:
Gitlin AD;Mayer CT;Oliveira TY;Shulman Z;Jones MJ;Koren A;Nussenzweig MC
通讯作者:
Nussenzweig MC
影响因子:
32.4
作者:
Bannard O;Horton RM;Allen CD;An J;Nagasawa T;Cyster JG
通讯作者:
Cyster JG
影响因子:
4.4
作者:
Caron, Gersende;Le Gallou, Simon;Fest, Thierry
通讯作者:
Fest, Thierry
影响因子:
32.4
作者:
Mesin, Luka;Ersching, Jonatan;Victora, Gabriel D.
通讯作者:
Victora, Gabriel D.
DOI:
10.1038/nri3804
发表时间:
2015-03
期刊:
Nature reviews. Immunology
影响因子:
--
作者:
通讯作者:
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