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CUT&Tag of mouse primary B cells transduced Pbx1 overexpression plasmid.

ABSTRACT: We performed the cleavage under targets and tagmentation (Cut & tag) assay followed by sequencing enriched DNA fragments to reveal the direct downstream targets of Pbx1. Firstly, we overexpressed Pbx1b with Pbx1b-IRES-GFP retrovirus in murine peripheral B cells to ensure the yields of DNA fragments. CUT & tag libraries were generated following instructions of the manufacturer’s protocol (Vazyme; cat TD901-01) and the Pbx1 antibody (CST; cat 4342) was used for signal enrichment.

INSTRUMENT(S): HiSeq X Ten

ORGANISM(S): Mus musculus

SUBMITTER: Nan Shen

PROVIDER: E-MTAB-12769 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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RIME against PBX1 protein in P19.6 mouse embryonal carcinoma cells treated for 48 hours with all-trans retinoic acid

Project description:Identification of PBX1 interactors in P19.6 mouse embryonal carcinoma cells treated for 48 hours with all-trans retinoic acid.

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Pbx1-d Induces T cell Activation and a Decreased Apoptosis in Response to Retinoic Acids (RA)

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Objective to explore the mechanism of STAT3 regulating PD-L1 expression at transcriptional level after LIFR overexpression in pancreatic cancer cells.

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Project description:The capacity of the hematopoietic system to promptly respond to peripheral demands relies on adequate pools of progenitors able to transiently proliferate and differentiate in a regulated manner. However, little is known about factors that may restrain progenitor maturation to maintain their reservoirs. In addition to a profound defect in hematopoietic stem cell (HSC) self-renewal, conditional knockout mice for the Pbx1 proto-oncogene have a significant reduction in lineage-restricted progenitors, including common myeloid progenitors (CMPs) and, to a lesser extent, granulocyte-monocyte progenitors (GMPs). Through analysis of purified progenitor proliferation, differentiation capacity and transcriptional profiling, we demonstrate that in the absence of Pbx1 the CMP pool is reduced due to aberrantly rapid myeloid maturation, associated with decreased expression of Meis1 and its targets including Flt3. BM cells were obtained from multiple bones of individual three to five week old Tie2Cre+.Pbx1-/f or Tie2Cre+.Pbx1+/f control mice (4-5 biological replicates/group). CMPs and GMPs were sorted by flow cytometry according to the following markers: Lin-/c-Kit+/Sca-/CD34+/CD16/32int, and Lin-/c-Kit+/Sca-/CD34+/CD16/32high, respectively, prior to RNA extraction.

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