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Matrix metalloproteinases expression in HL-60 promyelocytic leukemia cells during apoptosis. 2000

G Gazzanelli, and F Luchetti, and S Burattini, and F Mannello, and E Falcieri, and S Papa
Istituto di Istologia ed Analisi di Laboratorio, Facoltà di Scienze MFN, Università degli Studi, Via E. Zeppi, 61029 Urbino, Italy.

Human promyelocytic leukemia HL-60 cells have been used as a model to study both the expression of matrix-metalloproteinases and the mechanisms of programmed cell death. In the present study we examined the expression of these proteases in HL-60 cells stimulated by different apoptotic triggers. As shown by zymography, HL-60 cells released three major isofroms of the matrix-degrading proteases; when the leukemic cells were grown in serum-free conditions, as well as after hyperthermia and methotrexate treatment, we found a significant loss of the constitutive production of the 92 kDa matrixmetalloprotease, with an unequivocable molecular and ultrastructural evidence of programmed cell death. These results suggest that in HL-60 cells the expression/release of matrix metalloproteases can be down-regulated in the presence of the apoptotic-induced alterations, and that the decreased matrix-degrading capacity of this leukemic cell line during apoptosis may reduce its invasive potential.

UI MeSH Term Description Entries
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor
D016895 Culture Media, Serum-Free CULTURE MEDIA free of serum proteins but including the minimal essential substances required for cell growth. This type of medium avoids the presence of extraneous substances that may affect cell proliferation or unwanted activation of cells. Protein-Free Media,Serum-Free Media,Low-Serum Media,Culture Media, Serum Free,Low Serum Media,Media, Low-Serum,Media, Protein-Free,Media, Serum-Free,Media, Serum-Free Culture,Protein Free Media,Serum Free Media,Serum-Free Culture Media
D017209 Apoptosis A regulated cell death mechanism characterized by distinctive morphologic changes in the nucleus and cytoplasm, including the endonucleolytic cleavage of genomic DNA, at regularly spaced, internucleosomal sites, i.e., DNA FRAGMENTATION. It is genetically programmed and serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth. Apoptosis, Extrinsic Pathway,Apoptosis, Intrinsic Pathway,Caspase-Dependent Apoptosis,Classic Apoptosis,Classical Apoptosis,Programmed Cell Death,Programmed Cell Death, Type I,Apoptoses, Extrinsic Pathway,Apoptoses, Intrinsic Pathway,Apoptosis, Caspase-Dependent,Apoptosis, Classic,Apoptosis, Classical,Caspase Dependent Apoptosis,Cell Death, Programmed,Classic Apoptoses,Extrinsic Pathway Apoptoses,Extrinsic Pathway Apoptosis,Intrinsic Pathway Apoptoses,Intrinsic Pathway Apoptosis
D048429 Cell Size The quantity of volume or surface area of CELLS. Cell Volume,Cell Sizes,Cell Volumes,Size, Cell,Sizes, Cell,Volume, Cell,Volumes, Cell
D053938 DNA Fragmentation Splitting the DNA into shorter pieces by endonucleolytic DNA CLEAVAGE at multiple sites. It includes the internucleosomal DNA fragmentation, which along with chromatin condensation, are considered to be the hallmarks of APOPTOSIS. DNA Degradation, Apoptotic,Apoptotic DNA Degradation,Fragmentation, DNA
D018922 HL-60 Cells A promyelocytic cell line derived from a patient with ACUTE PROMYELOCYTIC LEUKEMIA. HL-60 cells lack specific markers for LYMPHOID CELLS but express surface receptors for FC FRAGMENTS and COMPLEMENT SYSTEM PROTEINS. They also exhibit phagocytic activity and responsiveness to chemotactic stimuli. (From Hay et al., American Type Culture Collection, 7th ed, pp127-8) HL60 Cells,Cell, HL60,Cells, HL60,HL 60 Cells,HL-60 Cell,HL60 Cell
D020782 Matrix Metalloproteinases A family of zinc-dependent metalloendopeptidases that is involved in the degradation of EXTRACELLULAR MATRIX components. MMP,MMPs,Matrix Metalloproteinase,Metalloproteinase, Matrix,Metalloproteinases, Matrix

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