PR-39, a porcine antimicrobial peptide, inhibits apoptosis: involvement of caspase-3. 2004

Balaji Ramanathan, and Hua Wu, and Christopher R Ross, and Frank Blecha
Department of Anatomy and Physiology, College of Veterinary Medicine, Kansas State University, Coles Hall 228, 1600 Denison Avenue, Manhattan, KS 66506-5602, USA.

The porcine antimicrobial peptide, PR-39, has several activities beyond its function of killing bacteria. Here we report that PR-39 alters macrophage viability by inhibiting apoptosis, which was induced by nutrient depletion, LPS stimulation or camptothecin treatment. This antiapoptotic effect was pronounced resulting in significant reductions in annexin-V binding to externalized phosphatidylserine and was associated with a decrease in caspase-3 activity. These findings suggest that PR-39, a porcine neutrophil-derived antimicrobial peptide, might function in the inflammatory milieu not only to kill bacteria, but also to aid in modulating the viability of inflammatory cells by regulating apoptosis.

UI MeSH Term Description Entries
D008070 Lipopolysaccharides Lipid-containing polysaccharides which are endotoxins and important group-specific antigens. They are often derived from the cell wall of gram-negative bacteria and induce immunoglobulin secretion. The lipopolysaccharide molecule consists of three parts: LIPID A, core polysaccharide, and O-specific chains (O ANTIGENS). When derived from Escherichia coli, lipopolysaccharides serve as polyclonal B-cell mitogens commonly used in laboratory immunology. (From Dorland, 28th ed) Lipopolysaccharide,Lipoglycans
D008264 Macrophages The relatively long-lived phagocytic cell of mammalian tissues that are derived from blood MONOCYTES. Main types are PERITONEAL MACROPHAGES; ALVEOLAR MACROPHAGES; HISTIOCYTES; KUPFFER CELLS of the liver; and OSTEOCLASTS. They may further differentiate within chronic inflammatory lesions to EPITHELIOID CELLS or may fuse to form FOREIGN BODY GIANT CELLS or LANGHANS GIANT CELLS. (from The Dictionary of Cell Biology, Lackie and Dow, 3rd ed.) Bone Marrow-Derived Macrophages,Monocyte-Derived Macrophages,Macrophage,Macrophages, Monocyte-Derived,Bone Marrow Derived Macrophages,Bone Marrow-Derived Macrophage,Macrophage, Bone Marrow-Derived,Macrophage, Monocyte-Derived,Macrophages, Bone Marrow-Derived,Macrophages, Monocyte Derived,Monocyte Derived Macrophages,Monocyte-Derived Macrophage
D002166 Camptothecin An alkaloid isolated from the stem wood of the Chinese tree, Camptotheca acuminata. This compound selectively inhibits the nuclear enzyme DNA TOPOISOMERASES, TYPE I. Several semisynthetic analogs of camptothecin have demonstrated antitumor activity. Camptothecine
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D004791 Enzyme Inhibitors Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction. Enzyme Inhibitor,Inhibitor, Enzyme,Inhibitors, Enzyme
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013552 Swine Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA). Phacochoerus,Pigs,Suidae,Warthogs,Wart Hogs,Hog, Wart,Hogs, Wart,Wart Hog
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
D017304 Annexin A5 A protein of the annexin family isolated from human PLACENTA and other tissues. It inhibits cytosolic PHOSPHOLIPASE A2, and displays anticoagulant activity. Annexin V,Placental Anticoagulant Protein I,Anchorin CII,Calphobindin I,Endonexin II,Lipocortin V,Lipocortin-V
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus

Related Publications

Balaji Ramanathan, and Hua Wu, and Christopher R Ross, and Frank Blecha
August 2007, Chemical biology & drug design,
Balaji Ramanathan, and Hua Wu, and Christopher R Ross, and Frank Blecha
January 1996, Antimicrobial agents and chemotherapy,
Balaji Ramanathan, and Hua Wu, and Christopher R Ross, and Frank Blecha
August 2014, Veterinary immunology and immunopathology,
Balaji Ramanathan, and Hua Wu, and Christopher R Ross, and Frank Blecha
September 2018, Microbial pathogenesis,
Balaji Ramanathan, and Hua Wu, and Christopher R Ross, and Frank Blecha
October 1998, The Journal of biological chemistry,
Balaji Ramanathan, and Hua Wu, and Christopher R Ross, and Frank Blecha
September 1999, The American journal of physiology,
Balaji Ramanathan, and Hua Wu, and Christopher R Ross, and Frank Blecha
May 2020, Protein expression and purification,
Balaji Ramanathan, and Hua Wu, and Christopher R Ross, and Frank Blecha
October 2009, International journal of antimicrobial agents,
Balaji Ramanathan, and Hua Wu, and Christopher R Ross, and Frank Blecha
January 2023, Journal of orthopaedic surgery (Hong Kong),
Balaji Ramanathan, and Hua Wu, and Christopher R Ross, and Frank Blecha
August 2016, Acta biochimica et biophysica Sinica,
Copied contents to your clipboard!