Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Hofstead, Sandra J"'
Autor:
Zawadzke, Laura E, Wu, Ping, Cook, Lynda, Fan, Li, Casperson, Margaret, Kishnani, Mona, Calambur, Deepa, Hofstead, Sandra J, Padmanabha, Ramesh
Publikováno v:
In Analytical Biochemistry 2003 314(2):243-252
Autor:
Lynda S. Cook, Laura Zawadzke, Ramesh Padmanabha, Ping Wu, Margaret Casperson, Li Fan, Mona Kishnani, Deepa Calambur, Hofstead Sandra J
Publikováno v:
Analytical Biochemistry. 314:243-252
Assays for two enzymes from Escherichia coli were developed and validated as antibacterial inhibitor screens. The MraY and MurG enzymes were overexpressed and purified as the membrane fraction or to homogeneity, respectively. The MurG enzyme was expr
Autor:
Pamela A. Trail, Harold Mastalerz, Raymond A. Firestone, David Willner, Hofstead Sandra J, Shirley J. Lasch, Dalton King, Gene M. Dubowchik
Publikováno v:
Journal of Medicinal Chemistry. 45:4336-4343
High mole ratio BR96 immunoconjugates were synthesized using branched peptide-doxorubicin linkers designed to liberate doxorubicin following antigen-specific internalization into lysosomes. However, these immunoconjugates are highly prone to noncoval
Autor:
Michael A. Walker, Shilpa Radia, Dalton King, Shirley J. Lasch, David Willner, Hofstead Sandra J, Gene M. Dubowchik, Harold Mastalerz, Raymond A. Firestone, Pamela A. Trail
Publikováno v:
Bioorganic & Medicinal Chemistry Letters. 12:1529-1532
Bivalent doxorubicin (DOX)-dipeptides ( 16a – c ) were prepared and conjugated to the monoclonal antibody BR96. The dipeptides are cleaved by lysosomal proteases following internalization of the resulting immunoconjugates. Conjugate 18b demonstrate
Autor:
David Willner, Gary R. Braslawsky, Greenfield Robert S, Shirley J. Lasch, Anna Maria Casazza, Hofstead Sandra J, Ingegerd Hellström, Raymond A. Firestone, Karl Erik Hellström, Pamela A. Trail, Arris J. Henderson, Takushi Kaneko, King Hd
Publikováno v:
Journal of Controlled Release. 39:251-259
BR96-Dox is an immunoconjugate (IC) in which doxorubicin (8 equivalents) is linked via an acid-labile hydrazone to the chimeric MAb BR96. It binds to a modified Le y Ag on tumor cells, which then internalize it via endocytosis into lysosomes. There,
Autor:
David Willner, Greenfield Robert S, Shirley J. Lasch, Hofstead Sandra J, Pamela A. Trail, King Hd, Raymond A. Firestone, Takushi Kaneko, Braslawsky Gary R
Publikováno v:
Bioconjugate Chemistry. 4:521-527
The (6-maleimidocaproyl)hydrazone of doxorubicin was synthesized and conjugated to several mAbs, including chimeric BR96, via a Michael addition reaction to thiol-containing mAbs. DTT reduction of disulfides present in the mAb was a reliable and gene
Autor:
Stella Huang, David R. Langley, Hofstead Sandra J, Kimberly L. Colson, Jerzy Golik, Daniel R. Schroeder, Steven E. Klohr, John E. Leet, Mike S. Lee
Publikováno v:
Journal of the American Chemical Society. 115:8432-8443
Kedarcidin, a new chromoprotein antitumor antibiotic, was isolated from the fermentation broth of a novel actinomycete strain. Kedarcidin consists of a water-soluble apoprotein and a solvent-extractable, cytotoxic, and highly unstable chromophore. Th
Autor:
Daniel R. Schroeder, John E. Leet, James A. Matson, Stella Huang, Jerzy Golik, Hofstead Sandra J, Kimberly L. Colson, Terrence W. Doyle, Steven E. Klohr
Publikováno v:
ChemInform. 24
Publikováno v:
Tetrahedron Letters. 33:6107-6110
The structure of kedarosamine, the amino sugar moiety of kedarcidin chromophore, was established by NMR spectroscopy and X-ray crystallography as 2,4 dideoxy-4-(dimethylamino)-L-fucopyranose. bl
Autor:
Wenying Li, Christopher L. Steele, Zizhuo Xing, Brian A. Dougherty, Hofstead Sandra J, Yijun Chen, Kin Sing Lam, Shu-Jen Chiang
Publikováno v:
Archives of biochemistry and biophysics. 438(1)
The conversion of α-phenylalanine to β-phenylalanine is the first committed step in the biosynthesis of the C-13 side chain of Taxol. Thus, the novel enzyme responsible for this step, phenylalanine aminomutase (PAM), is of considerable interest for