摘要:
A substantially enriched mammalian hematopoietic cell subpopulation is provided, which is characterized by progenitor cell activity for lymphoid lineages, but lacking the potential to differentiate into myeloid and erythroid lineages. Methods are provided for the isolation and culture of this common lymphoid progenitor cell (CLP). The cell enrichment methods employ reagents that specifically recognize CDw127 (IL-7 receptor α); CD117 (c-kit) protein, in conjunction with other markers expressed on lineage committed cells. The murine cells are also characterized as expressing low levels of sca-1 (Ly-6E and Ly-6A). The CLPs are predominantly cycling, blast cells. These cells give rise to B cells, T cells and natural killer cells, as evidenced by their growth and differentiation in vitro and in vivo.
摘要:
Provided herein are differentially methylated regions (DMRs) of multipotent progenitor cells (MPPs) and oligopotent progenitor cells and methods of use thereof. The invention provides methods for detecting and analyzing alterations in the methylation status of DMRs in such progenitor cells as well as methods for differentiating such cells.
摘要:
A set of markers for melanoma cancer stem cells are provided. The cells can be prospectively isolated or identified from primary tumor samples, and possess the unique properties of cancer stem cells in functional assays for tumor initiation, cancer stem cell self-renewal and differentiation. In addition, cancer stem cells can be used as a predictor for disease progression. The CSC have the phenotype of being positive for expression CD271.
摘要:
Cancer stem cells (CSCs) have been prospectively isolated or identified from primary tumor samples, and shown to possess the unique properties of self-renewal and differentiation, and can form unique histological microdomains useful in cancer diagnosis. Such cancer stem cells are shown herein to have the phenotype of containing decreased levels of reactive oxygen species (ROS) relative to non-tumorigenic (non-stem cell) cancer cells, as well as expression of other protective pathways. The CSCs are further shown to be more resistant to ionizing radiation (IR) and certain chemotherapies and to express high levels of ROS genes.
摘要:
Cancer specific splicing events in the Wnt/β-catenin signaling pathway are associated with progression of myelogenous leukemia. Misspliced genes of interest include GSK3β. In some embodiments of the invention, polynucleotides are provided that correspond to misspliced GSK3β transcripts associated with cancer. Such transcripts are characterized by a deletion of exon (8), and particularly in exon (8) and (9). Detection of such transcripts in cells is indicative of the presence of leukemia, and particularly of the presence of leukemia stem cells. In other embodiments, polypeptides are provided that are encoded by misspliced GSK3β transcripts associated with cancer. Such polypeptides are useful as diagnostic markers for cancer, and as a target for screening of therapeutic agents. Animal models comprising a human LSC having a misspliced GSK3b transcript provide a useful model for leukemia, for drug/gene screening in the prevention and treatment of leukemia in humans, etc.
摘要:
Acute myeloid leukemia stem cells (AMLSC) are identified. The cells can be prospectively isolated or identified from patient samples, and are shown to possess the unique properties of cancer stem cells in functional assays for cancer stem cell self-renewal and differentiation, and in cancer diagnosis.
摘要:
Acute myeloid leukemia stem cells (AMLSC) are identified. The cells can be prospectively isolated or identified from patient samples, and are shown to possess the unique properties of cancer stem cells in functional assays for cancer stem cell self-renewal and differentiation, and in cancer diagnosis.
摘要:
Squamous carcinoma stem cells (SCSC) are identified. The cells can be prospectively isolated or identified from primary tumor samples, and are shown to possess the unique properties of cancer stem cells in functional assays for cancer stem cell self-renewal and differentiation, and to form unique histological microdomains useful in cancer diagnosis.
摘要:
Acute myeloid leukemia stem cells (AMLSC) are identified. The cells can be prospectively isolated or identified from patient samples, and are shown to possess the unique properties of cancer stem cells in functional assays for cancer stem cell self-renewal and differentiation, and in cancer diagnosis.
摘要:
A substantially enriched mammalian hematopoietic cell subpopulation is provided, which is characterized by progenitor cell activity for myeloid lineages, but lacking the potential to differentiate into lymphoid lineages. This population is further divided into specific myeloid progenitor subsets, including a common myeloid progenitor cells (CMP), megakaryocyte/erythroid progenitor cells (MEP) and granulocyte/monocyte lineage progenitor (GMP). Methods are provided for the isolation and culture of these subpopulations. The CMP population gives rise to all myeloid lineages, and can give rise to the two additional and isolatable progenitor populations that are exclusively committed to either the erythroid/megakaryocytic or myelomonocytic lineages. Tηε χελλ ενιχημεντ μετηoδσ εμπλoψεαγεντσ τηατ σπεχαλλψεψoγνιζε Tηψ-1; ανδIΛ-7 Pα, in conjunction with other markers expressed on lineage committed cells. These cells give rise to a variety of myeloid cells, including megakaryocytes, granulocytes, dendritic cells and erythroid cells, as evidenced by their growth and differentiation in vitro and in vivo.