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Molecular cloning and characterization of a novel neutrophil chemotactic factor from a filarial parasite. 1993

M Owhashi, and S Futaki, and K Kitagawa, and Y Horii, and H Maruyama, and H Hayashi, and Y Nawa
Department of Health Science, Faculty of Integrated Arts and Sciences, University of Tokushima, Japan.

To compare the molecular structure of a parasite-derived neutrophil chemotactic factor (NCF) with host-derived NCFs or other NCFs, molecular cloning of cDNA encoding NCF derived from Dirofilaria immitis adult worm (DiNCF) was performed. A D. immitis cDNA library was screened with an antibody to DiNCF, and one DiNCF cDNA clone (pD-4) was isolated. A fusion protein of pD-4 and gene 10 protein showed significant neutrophil chemotactic activity whereas gene 10 protein itself showed marginal neutrophil chemotactic activity. The total nucleotide sequence analysis revealed that pD-4 was 994 bp long with a 432 bp open leading frame encoding a 143 residue protein. The NH2-terminal amino acid sequence of the natural DiNCF and the deduced amino acid sequence from the cDNA showed that the mature functional protein was comprised of 112 amino acids. Although the deduced amino acid sequence of this protein did not show overall homology to host-derived NCFs or other known proteins, it contained a similar sequence (Met-Phe-Lys) to the known chemotactic peptides. The possibility of the functional epitope of DiNCF is discussed.

UI MeSH Term Description Entries
D008969 Molecular Sequence Data Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories. Sequence Data, Molecular,Molecular Sequencing Data,Data, Molecular Sequence,Data, Molecular Sequencing,Sequencing Data, Molecular
D009504 Neutrophils Granular leukocytes having a nucleus with three to five lobes connected by slender threads of chromatin, and cytoplasm containing fine inconspicuous granules and stainable by neutral dyes. LE Cells,Leukocytes, Polymorphonuclear,Polymorphonuclear Leukocytes,Polymorphonuclear Neutrophils,Neutrophil Band Cells,Band Cell, Neutrophil,Cell, LE,LE Cell,Leukocyte, Polymorphonuclear,Neutrophil,Neutrophil Band Cell,Neutrophil, Polymorphonuclear,Polymorphonuclear Leukocyte,Polymorphonuclear Neutrophil
D010957 Plasmids Extrachromosomal, usually CIRCULAR DNA molecules that are self-replicating and transferable from one organism to another. They are found in a variety of bacterial, archaeal, fungal, algal, and plant species. They are used in GENETIC ENGINEERING as CLONING VECTORS. Episomes,Episome,Plasmid
D011917 Rats, Inbred Lew An inbred strain of rat that is used in BIOMEDICAL RESEARCH. Rats, Inbred Lewis,Rats, Lew,Inbred Lew Rat,Inbred Lew Rats,Inbred Lewis Rats,Lew Rat,Lew Rat, Inbred,Lew Rats,Lew Rats, Inbred,Lewis Rats, Inbred,Rat, Inbred Lew,Rat, Lew
D002630 Chemotactic Factors Chemical substances that attract or repel cells. The concept denotes especially those factors released as a result of tissue injury, microbial invasion, or immunologic activity, that attract LEUKOCYTES; MACROPHAGES; or other cells to the site of infection or insult. Chemoattractant,Chemotactic Factor,Chemotaxin,Chemotaxins,Cytotaxinogens,Cytotaxins,Macrophage Chemotactic Factor,Chemoattractants,Chemotactic Factors, Macrophage,Macrophage Chemotactic Factors,Chemotactic Factor, Macrophage,Factor, Chemotactic,Factor, Macrophage Chemotactic
D002634 Chemotaxis, Leukocyte The movement of leukocytes in response to a chemical concentration gradient or to products formed in an immunologic reaction. Leukotaxis,Leukocyte Chemotaxis
D003001 Cloning, Molecular The insertion of recombinant DNA molecules from prokaryotic and/or eukaryotic sources into a replicating vehicle, such as a plasmid or virus vector, and the introduction of the resultant hybrid molecules into recipient cells without altering the viability of those cells. Molecular Cloning
D004183 Dirofilaria immitis A filarial parasite primarily of dogs but occurring also in foxes, wolves, and humans. The parasite is transmitted by mosquitoes. Dog Heartworm,Dirofilaria immitides,Dog Heartworms,Heartworm, Dog,Heartworms, Dog,immitis, Dirofilaria
D004184 Dirofilariasis Infection with nematodes of the genus DIROFILARIA, usually in animals, especially dogs, but occasionally in man. Heartworm Disease,Dirofilariases,Disease, Heartworm
D004285 Dogs The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065) Canis familiaris,Dog

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