Abstract

Normal, lactating rat mammary gland and dimethylbenz[a]anthracene (DMBA)- induced rat mammary tumor galactosyltransferase (GTase) synthesized in vitro by translating extracted messenger RNA from these respective tissues in cell-free wheat germ extract and rabbit reticulocyte lysate systems will be exploited to characterize the existence of differential internal domain- directed putative anabolic action of these enzymes in cell-cell interactions. Presently, we have found molecular weight differences and putative substrate affinity differences in nascent polypeptides synthesized in these tissues during their differential metabolic states. In these on- going studies, mammary gland and tumor cells grown in culture will be probed with substrate-liganded gel beads to determine the in situ selectivity of these putative multiforms of GTase. Enzymic-directed isotope labeled (3H-galactose and 3H-UDP-galactose) cells in culture will be harvested and subjected to subcellular fractionation for analyses by affinity chromatography, immunoprecipitation, electroblot (western transfer) and HPLC to determine the translational regulation of GTase(s) as putative markers of differences in cell-to-cell surface actions in the normal and tumorous states of mammary cells.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Minority Biomedical Research Support - MBRS (S06)
Project #
5S06GM008247-07
Application #
3756227
Study Section
Project Start
Project End
Budget Start
Budget End
Support Year
7
Fiscal Year
1994
Total Cost
Indirect Cost

  Institution

Name
Clark Atlanta University
Department
Type
DUNS #
065325177
City
Atlanta
State
GA
Country
United States
Zip Code
30314

  Publications

Ifere, Godwin O; Equan, Anita; Gordon, Kereen et al. (2010) Cholesterol and phytosterols differentially regulate the expression of caveolin 1 and a downstream prostate cell growth-suppressor gene. Cancer Epidemiol 34:461-71
Mariam, Yitbarek H; Musin, Ryza N (2008) Transition from moderate to strong hydrogen bonds: its identification and physical bases in the case of O-H...O intramolecular hydrogen bonds. J Phys Chem A 112:134-45
Kimbro, K Sean; Duschene, Kaitlin; Willard, Margeret et al. (2008) A novel gene STYK1/NOK is upregulated in estrogen receptor-alpha negative estrogen receptor-beta positive breast cancer cells following estrogen treatment. Mol Biol Rep 35:23-7
Chu, Qinghui; Pang, Yi (2004) Vibronic structures in the electronic spectra of oligo(phenylene ethynylene): effect of m-phenylene to the optical properties of poly(m-phenylene ethynylene). Spectrochim Acta A Mol Biomol Spectrosc 60:1459-67
Sannigrahi, Biswajit; McGeady, Paul; Khan, Ishrat M (2004) Helical poly(3-methyl-4-vinylpyridine)/amino acid complexes: preparation, characterization, and biocompatibility. Macromol Biosci 4:999-1007
Liang, Sidney; Bu, Xiu R (2002) Tertiary pentyl groups enhance salen titanium catalyst for highly enantioselective trimethylsilylcyanation of aldehydes. J Org Chem 67:2702-4
Vanderveer, Donald; Colon, Marisabel Lebron; Bu, Xiu R (2002) Crystal structure of a chiral Ni complex: (R,R)-N,N'-bis(3-t-butylsalicylidene)-1,2-cyclohexanediaminonickel(II). Anal Sci 18:1283-4
Musey, Paul I; Ibim, Sobrasua M; Talukder, Niranjan K (2002) Development of artificial blood vessels: seeding and proliferation characteristics of endothelial and smooth muscle cells on biodegradable membranes. Ann N Y Acad Sci 961:279-83
Chiang, C F; Okou, D T; Griffin, T B et al. (2001) Green fluorescent protein rendered susceptible to proteolysis: positions for protease-sensitive insertions. Arch Biochem Biophys 394:229-35
Johnson, K P; Rowe, G C; Jackson, B A et al. (2001) Novel antineoplastic isochalcones inhibit the expression of cyclooxygenase 1,2 and EGF in human prostate cancer cell line LNCaP. Cell Mol Biol (Noisy-le-grand) 47:1039-45

Showing the most recent 10 out of 17 publications