Cellular functions

Articles

• phagocytosis
  23 April 2004

  Definition: Phagocytosis is a specific form of endocytosis involving the vesicular internalization of solid particles, such as bacteria. It is therefore distinct from other forms of endocytosis such as pinocytosis, the vesicular internalization of various liquids, and recptor-dependent endocytosis.
  Phagocytosis (literally, cell-eating) is the process by which cells ingest large objects, such as cells which have undergone apoptosis, bacteria, or viruses. The membrane folds around the (...)

• cellular aging
  7 March 2004

  Cellular aging is the result of a progressive decline in the proliferative capacity and life span of cells and the effects of continuous exposure to exogenous influences that result in the progressive accumulation of cellular and molecular damage. Structural and Biochemical Changes with Cellular Aging
  A number of cell functions decline progressively with age.
  Oxidative phosphorylation by mitochondria is reduced, as is synthesis of nucleic acids and structural and enzymatic proteins, (...)

• leukocyte migration
  25 January 2006

  The Src-family kinases (SFKs) Fgr and Hck inhibit chemokine signaling in polymorphonuclear leukocytes and dendritic cells by phosphorylation of PIR-B, an inhibitory receptor expressed on leukocytes.
  In resting cells, PIR-B phosphorylation is constitutive but is decreased transiently by addition of chemokines. In Fgr/Hck-deficient cells, constitutive PIR-B phosphorylation is markedly decreased.
  See also
  chemokine signaling
  cell migration
  cell invasion
  References
  Brown EJ. (...)

• cadherin-mediated adhesion
  29 October 2003

  cadherin-mediated cell-cell adhesion

• protein sorting
  20 October 2003
• protein transport
  20 October 2003

  protein trafficking, intracellular protein transport

• neutrophil phagocytosis
  14 March 2007

  Phagocytosis of microbes by professional phagocytes such as neutrophils is crucial for the survival of the host.
  Microscopically, pseudopod extension, particulate engulfment and phagosome closure all require seemingly large expansions of the cell surface area.
  See also
  membrane stretching
  lipid bilayers
  exocytosis
  phagosomal fusion with endoplasmic reticulum membrane
  phagocytosis
  neutrophils
  References
  Hallett MB, Dewitt S. Ironing out the wrinkles of neutrophil (...)

• leucocytic adhesion
  30 January 2005

  leucocyte adhesion, leukocyte adhesion

• cell-cell signaling
  7 March 2004
• soluble factor-cell signaling
  7 March 2004

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