MYCL expression is maintained in proliferating pre-pDCs and elevated on terminal differentiation in the BM.
(A) Frequency of M phase cycling cells (hGeminin-Venus+) among bulk CC9+ and CCR9− BM pDCs. (B and C) Representative gating scheme for flow cytometry analysis of lymphoid progenitor populations, pre-pDCs, immature, and mature BM pDCs in Fucci2+Myclgfp/gfp mice. (D) Fucci2 cell cycle analysis on the basis of hGeminin-Venus and hCDT-mCherry expression for the indicated populations, defined in B and C. (E and F) Quantification of the frequency of hGeminin-Venus/YFP+ and hCDT-mCherryhigh for the indicated populations. (G)
Mycl-GFP and CCR9 expression analyzed for the populations indicated above in D. (H)
Mycl-GFP expression for the populations indicated above in D. Numbers indicate MFI. (D) Analysis of hCDT-mCherry and Mycl-GFP expression for the populations indicated in D in Fucci2 hemizygous MyclGFP/+ mice. All data are representative of two independent experiments (n = 4). Populations were defined as follows: ALP defined as Lin−CD135+CD11c−MHCII−Ly6C−CD115−CD127+CD117int-lowLy6D−SiglecH−, pre-pDC (A) defined as Lin−CD135+CD11c−MHCII−Ly6C−CD115−CD127+CD117int-lowLy6D+SiglecH+, pre-pDC (B) defined as Lin−CD135+CD11c+CD115−Ly6D+SiglecH+CCR9−MHCII−, immature (Imm) pDC defined as Lin−CD135+CD11c+CD115−Ly6D+SiglecH+CCR9+MHCII−, and mature (Mat) pDC defined as Lin−CD135+CD11c+CD115−Ly6D+SiglecH+CCR9+MHCII+. Data are representative of two independent experiments (n = 4). Norm, normal.