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Biomedical subjects

K Mise

Publications and source records attributed to K Mise.

At least 91 records · Page 5Linked to original sources
PubMed1989

[Experimental and clinical study of adoptive immunotherapy combined with preadministration of OK-432: a method to augment the therapeutic effect].

Our previous method of adoptive immunotherapy using IL2-cultured autologous lymphocytes consists of (1) in vitro sensitization by sonicated autologous tumor extract, (2) the induction and proliferation of active CTL by crude IL2, and (3) the preadministration of OK-432 for the augmentation of the therapeutic effect. Here we describe a new method to augment the therapeutic effect of OK432-combined AIT. In BALB/c mice with advanced malignant ascites (MOPC 104E), serial therapy with OK-432, cyclophosphamide and AIT significantly prolonged the survival compared with other therapeutic schedules through synergism between host's effector cells induced by immuno-chemotherapy and transferred killer cells. Many patients with advanced malignancies, for example, unresectable gastrointestinal cancer, locally advanced breast cancer or lung metastases of breast cancer, respond to such immuno-chemo-lymphocytotherapy, while previous OK432-combined AIT was effective only in malignant pleural effusion or metastatic liver tumor from breast cancer or peritoneal dissemination of gastric cancer.

Adult↗
PubMed1988

Nucleotide sequence analysis of cDNA encoding the coat protein of cucumber mosaic virus: genome organization and molecular features of the protein.

The cDNA sequence coding for the coat protein of cucumber mosaic virus (Japanese Y strain) was cloned, and its nucleotide sequence was determined. The sequence contains an open reading frame that encodes the coat protein composed of 218 amino acids. The nucleotide and deduced amino acid sequences of the coat protein of this strain were compared with those of the Q strain; the homologies of the sequences were 78% and 81%, respectively. Further study of the sequences gave an insight into the genome organization and the molecular features of the coat protein. The coding region can be divided into three characteristic regions. The N-terminal region has conserved features in the positively charged structure, the hydropathy pattern and the predicted secondary structure, although the amino acid sequence is varied mainly due to frameshift mutations. It is noteworthy that the positions of arginine residues in this region are highly conserved. Both the nucleotide and amino acid sequences of the central region are well conserved. The amino acid sequence of the C-terminal region is not conserved, because of frameshift mutations, however, the total number of amino acids is conserved. The nucleotide sequence of the 3'-noncoding region is divergent, but it could form a tRNA-like structure similar to those reported for other viruses. Detailed investigation suggests that the Y and Q strains are evolutionarily distant.

Amino Acid Sequence↗
PubMed1988

Widespread occurrence of the restriction endonuclease YenI, an isoschizomer of PstI, in Yersinia enterocolitica serotype O8.

The cold-active restriction endonuclease YenI, an isoschizomer of PstI, was found in 12 of 14 Yersinia enterocolitica serotype O8 strains of different origins, but not in other serotypes of Y. enterocolitica, Yersinia pseudotuberculosis, or Yersinia pestis. In spite of the limited number of strains tested, the result suggests that the detection of YenI endonuclease or the gene might result in more rapid determination of the prominently pathogenic serotype of Y. enterocolitica.

Animals↗
PubMed1988

[A correlation between the evaluation of assay results of immuno-suppressive substance (IS) in the blood and other parameters in patients with gastric cancer].

This present study has assayed the immuno-suppressive substance (IS) in the blood level at certain definite times in patients with a gastric cancer. Prior to surgery, the positivity of IS was low in Stages I and II but rose rapidly with the advance in stage. Therefore this assay has little meaning as a method for screening the cancer. Two months after operation, a loss in the IS amount occurred, due to the therapeutic treatment that had been initiated, and a state of equilibrium was reached after the third month. This IS withdrawal from the blood was delayed in comparison with other parameters. Further, a mild negative correlation was observed between the IS blood levels and the PPD intracutaneous reaction, which was determined in parallel, while a moderately positive correlation was found between the IS blood levels and the levels of the tissue polypeptide antigen and the alpha 2-globulin in the blood. The determination of the IS blood levels at specific times has been deemed useful and should be done in combination with the evaluation of the other parameters, which have different mechanisms of formation, so as to ascertain the general condition of the cancer patient.

Adult↗
PubMed1988

[Clinical therapeutic effect of adoptive immunotherapy using IL-2-cultured autologous lymphocytes].

Our method of adoptive immunotherapy (AIT) using autologous IL-2-cultured lymphocytes differs from so-called LAK therapy in several points. We (1) obtain cultured lymphocytes from effusion lymphocytes (EL) or regional lymph-node lymphocytes (RLNL), when possible, rather than peripheral blood lymphocytes (PBL), (2) use crude IL-2 to induce T cell proliferation and to maintain killer activity, (3) use sonicated autologous tumor extract as antigen (Ag) to stimulate proliferation of cytotoxic T cells, and (4) pretreat the patients with local administration of OK-432 before AIT to induce effector cells that act synergistically with transferred killer cells. Surface marker analysis showed that OKT3, IL-2 receptor, Leu 2+15- cells were elevated while Leu 11a and Leu 3+8+ cells were decreased. Culture of RLNL augmented the expression of Leu 3+8- marker. Both of PBL and RLNL responded to Ag, and their auto-tumor killing activities were augmented in about half of the patients while rarely decrease by the addition of Ag. Response rates of patients with pleural effusion due to breast cancer and those with liver metastasis of breast cancer were 94% and 60%, respectively. Moreover, the survival was prolonged in the treated patients with pleural effusion or gastric cancer patients with peritoneal dissemination.

Cells, Cultured↗
PubMed1987

Localization of c-Ha-ras-1 oncogene in the t(7p-;11p+) abnormality of two cases with myeloid leukemia.

A reciprocal translocation involving the short arms of chromosomes #7 and #11, t(7;11)(p15;p15), was found in two patients with myeloid leukemia, one with acute myelogenous leukemia (AML-M2) and the other with Philadelphia chromosome-positive chronic myelocytic leukemia (CML) in blastic phase. In both cases, a minor fraction of leukemic blasts in the bone marrow had Auer rods in the cytoplasm. In situ chromosome hybridization showed that the c-Ha-ras-1 oncogene localized to the breakpoint (p15) of chromosome #11 is translocated to the rearranged chromosome #7 in the AML case, whereas, it remained on the conserved region of the rearranged chromosome #11 in the CML case. The significance of the t(7;11) abnormality in myeloid leukemia is discussed.

Chromosome Banding↗
PubMed1987

Reciprocal translocation involving the short arms of chromosomes 7 and 11, t(7p-;11p+), associated with myeloid leukemia with maturation.

A reciprocal translocation involving the short arms of chromosomes 7 and 11, t(7;11)(p15;p15), was found in nine patients including eight with acute myelogenous leukemia (AML) and one with Philadelphia (Ph1) chromosome-positive chronic myelogenous leukemia (CML) in blastic crisis. Although a similar chromosome rearrangement has previously been reported in five patients, including three with AML and two with CML, the 7p breakpoint in some of these cases was slightly different from that detected in our patients. Notable cytogenetic and clinicohematologic findings in our patients and those reported in the literature were as follows: (a) t(7;11) occurred in myeloid leukemia, predominantly AML with subtype M2, and occasionally in other AML subtypes and in CML with or without Ph1 chromosome; (b) t(7;11) frequently occurred as the sole chromosome abnormality; (c) most patients showed a low neutrophil alkaline phosphatase score; and (d) Auer rods were present in leukemic cells of most cases including Ph1-positive CML. Our findings suggest that a t(7;11)-associated leukemia constitutes a subgroup of myeloid malignancy involving maturing leukemic cells.

Blast Crisis↗
PubMed1986

Production of restriction endonucleases using multicopy Hsd plasmids occurring naturally in pathogenic Escherichia coli and Shigella boydii.

A convenient procedure has been devised for detection of restriction endonucleases in the Escherichia coli-Shigella group. With this procedure, two restriction endonucleases, designated Sbo 13 and Eco T22, were found and later were identified as isoschizomers of NruI and AvaIII, respectively. These endonucleases were shown to be produced from small multicopy plasmids. They were isolated from nonpathogenic E. coli into which the plasmids had been introduced by transformation, and purified from contaminating nuclease activity. The yield was high, 1,000 units/g of wet cells for Sbo 13 and 500 units/g for Eco T22. Sbo 13 and Eco T22 should be preferable to NruI and AvaIII because of the high yield and ease in handling the producer cells.

DNA Restriction Enzymes↗
PubMed1986

Occurrence of small Hsd plasmids in Salmonella typhi, Shigella boydii, and Escherichia coli.

The natural occurrence of small Hsd (host specificity for DNA) plasmids was demonstrated in restriction endonuclease-producing strains of Salmonella typhi, Shigella boydii, and Escherichia coli. The five Hsd plasmids isolated were between 5.0 and 12.2 kilobases long. The copy number of all the Hsd plasmids was high (more than 10 copies per cell). Introduction of these small plasmids into E. coli strain 0 drastically lowered the efficiency of plating of the lambda.0 phages (the efficiency of plating was less than 5 X 10(-5) PFU-1). High restriction endonuclease activities were detected in the Hsd plasmid-positive strains because of the elevated copy numbers of the hsdR+ gene. The advantages of using E. coli strains containing the small Hsd plasmids for purification of type II restriction endonucleases are discussed.

DNA Restriction Enzymes↗
PubMed1985

Restriction endonuclease EcoO109 from Escherichia coli H709c with heptanucleotide recognition site 5'-PuG/GNCCPy.

A new restriction endonuclease, EcoO109, has been isolated from Escherichia coli H709c by polyethyleneimine (PEI) precipitation, DEAE-cellulose chromatography and heparin agarose chromatography. The yield was high, more than 3000 units/g of wet cells. The EcoO109 endonuclease recognizes and cleaves a nucleotide sequence of (formula: see text), in the presence of 10 mM Mg2+. The enzyme will be useful for structural analysis and molecular cloning of DNA because of the stability, high yield and easy handling of the producer strain.

Base Sequence↗
PubMed1985

Purification of a new restriction endonuclease, StyI, from Escherichia coli carrying the hsd+ miniplasmid.

A new restriction endonuclease, StyI, free of contaminating nuclease activities, has been isolated from Escherichia coli carrying the hsd+ miniplasmid of Salmonella typhi origin. In the presence of 10 mM Mg2+, it recognizes and cleaves a hexanucleotide sequence of 5'-C decreases C(AT)(AT)GG. The advantages of the StyI endonuclease include its stability, high yield (more than 2 X 10(3) units/g of wet cells), easy handling of producer cells, and the ability to recognize new sequences, CCAAGG and CCTTGG.

Bacteriophage lambda↗
PubMed1985

Regional mapping of the human proto-oncogene c-yes-1 to chromosome 18 at band q21.3.

Human proto-oncogene c-yes-1 homologous to the viral oncogene (v-yes) of an avian Y73 sarcoma virus was mapped to region q21.3 of chromosome 18 by in situ hybridization. This finding confirmed and more rigidly substantiated the previous assignment which was based on analyses of human X mouse somatic cell hybrids and Southern blots.

Chromosome Mapping↗
PubMed1985

[Effect of combined use of adrenocortical hormones and domperidone as anti-emetics during cisplatin therapy].

Eighteen patients received repeated administrations of cisplatin in relatively large amounts (55-75-100 mg/m2) given systemically by drop infusion. As antiemetic treatments, the following were scheduled: on the day before; prednisolone 30mg (3 X p.o.), immediately before; methylprednisolone 500mg (i.v.), and 3 hours after administration of cisplatin ; methylprednisolone 500mg (i.v.) and domperidone 60 mg (suppo.). Domperidone was given twice a day for one week. Nausea, vomiting and anorexia were studied objectively for two weeks. At a dose of 75 mg/m2 of cisplatin, the occurrence and the duration of nausea and vomiting were effectively reduced by the regimen; nausea was observed in 67% of all cases (average duration: 3.3 days) and vomiting was experienced in 40% (1.2 days). Anorexia was observed in 67% of cases and lasted longer (5.2 days). The severity and duration of these side effects of nausea, vomiting and anorexia seemed to appear in a manner related to the dose of cisplatin given, but even at a dose of 100 mg/m2, the regimen described above reduced the patients' discomfort to acceptable levels. No remarkable side effect of this anti-emetic regimen was evident.

Adult↗
PubMed1984

Isolation of restriction enzyme EcoVIII, an isoschizomer of HindIII, produced by Escherichia coli E1585-68.

A restriction endonuclease designated EcoVIII, an isoschizomer of HindIII, was isolated from Escherichia coli E1585-68 and purified by dextran-polyethylene glycol (DPG) phase partition, ammonium sulfate precipitation, phospho- and DEAE-cellulose chromatography, and hydroxylapatite chromatography. The purified EcoVIII was stable during the purification procedure and its high specific activity required 10 mM Mg2+. Unlike HindIII, EcoVIII exhibited a high specific activity even at low pH (pH 6.3) and showed the highest activity at 48 degrees C. Transformation of purified plasmid DNA from E. coli E1585-68 into K-12 indicated that the EcoVIII gene was carried on a multicopy 4.4-kb miniplasmid. EcoVIII seems to be preferable to HindIII for its production and use because of easier handling of producer cells and a wider range of activity.

Base Sequence↗
PubMed1984

Characterization of generalized transducing phage phi w39 heteroimmune to phage P1 in Escherichia coli W39.

Generalized transducing phage similar to phage P1 in Escherichia coli was isolated from E. coli W39, an antigenic test strain of the O121 group. This phage, designated phi w39, was reciprocally heteroimmune to phages P1 and P7, but nonreciprocally heteroimmune to phage D6. Transduction experiments using various R plasmids with different molecular weights suggested that phage phi w39 could transduce at least 65 megadaltons DNA. As in the case of P1 prophage, phi w39 prophage existed as a plasmid belonging to incompatibility group Y and carried a dnaB-like function. The molecular weight of phi w39 plasmid was nearly the same as that of plasmid, i.e., 58.6 megadaltons. Despite the pronounced structural and functional similarity of phages phi w39 and P1, restriction cleavage patterns of their genomes differed considerably.

Coliphages↗
PubMed1983

Generalized transduction between Salmonella typhi and Salmonella typhimurium by phage j2 and characterization of the j2 plasmid in Escherichia coli.

Phage j2, a P1-like phage in Salmonella typhi, was heteroimmune to phage P1 and existed in the lysogenic state as a plasmid of molecular size 58.6 MDal. The phage j2 plasmid was incompatible with the P1 plasmid (IncY group). A j2-sensitive mutant of Salmonella typhimurium LT2 was isolated by transduction of j2Ap phage into LT2 followed by curing of the prophage. The mutant was used to demonstrate transduction between S. typhi and S. typhimurium by phage j2.

Coliphages↗