Abstract

The purpose of my project is to examine the structure of human salivary mucins and relate this to their function. Mucins function as lubricants and protect host tissue from abrasion and dessication in the oral cavity. High and low molecular weight mucins (MG1 and MG2) have been isolated from human submandibular-sublingual gland saliva. MG1 has a molecular weight of > 1000 kDa and is ~80% carbohydrate. Very little is known about MG1 protein backbone structure. We have deglycosylated purified MG1 by hydrogen fluoride solvolysis and prepared a rabbit antisera to the protein fraction. The antisera was used to screen a human submandibular gland lambda gt11 cDNA library. Positive clones were purified, amplified by PCR, and subcloned into PGEM 11. Future studies will involve the sequencing of MG1 cDNA, identification of the MG1 gene, and examination of MG1 biosynthesis. A better understanding of mucin structure may help in design and production of synthetic mucins which will improve artificial salivas for xerostomia patients.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Institute of Dental & Craniofacial Research (NIDCR)
Type
Unknown (K16)
Project #
5K16DE000158-08
Application #
3839109
Study Section
Project Start
Project End
Budget Start
Budget End
Support Year
8
Fiscal Year
1992
Total Cost
Indirect Cost

  Institution

Name
State University of New York at Buffalo
Department
Type
DUNS #
038633251
City
Buffalo
State
NY
Country
United States
Zip Code
14260

  Publications

Krebs, Linda J; Wang, Xiaopeng; Nagy, Atilla et al. (2002) Bombesin and epidermal growth factor potentiate the effect of cytotoxic LH-RH analog AN-152 in vitro. Int J Oncol 21:1325-9
Krebs, Linda J; Wang, Xiaopeng; Nagy, Attila et al. (2002) A conjugate of doxorubicin and an analog of Luteinizing Hormone-Releasing Hormone shows increased efficacy against oral and laryngeal cancers. Oral Oncol 38:657-663
Rogers, J D; Scannapieco, F A (2001) RegG, a CcpA homolog, participates in regulation of amylase-binding protein A gene (abpA) expression in Streptococcus gordonii. J Bacteriol 183:3521-5
Krebs, L J; Wang, X; Pudavar, H E et al. (2000) Regulation of targeted chemotherapy with cytotoxic lutenizing hormone-releasing hormone analogue by epidermal growth factor. Cancer Res 60:4194-9
Malek, R; Fisher, J G; Caleca, A et al. (1994) Inactivation of the Porphyromonas gingivalis fimA gene blocks periodontal damage in gnotobiotic rats. J Bacteriol 176:1052-9
Dolce, C; Anguita, J; Brinkley, L et al. (1994) Effects of sialoadenectomy and exogenous EGF on molar drift and orthodontic tooth movement in rats. Am J Physiol 266:E731-8
Stephan, E B; Dziak, R (1994) Effects of genistein, tyrphostin, and pertussis toxin on EGF-induced mitogenesis in primary culture and clonal osteoblastic cells. Calcif Tissue Int 54:409-13
Grossi, S G; Zambon, J J; Ho, A W et al. (1994) Assessment of risk for periodontal disease. I. Risk indicators for attachment loss. J Periodontol 65:260-7
Winston, J L; Chen, C K; Neiders, M E et al. (1993) Membrane protein expression by Actinobacillus actinomycetemcomitans in response to iron availability. J Dent Res 72:1366-73
Sharma, A; Sojar, H T; Lee, J Y et al. (1993) Expression of a functional Porphyromonas gingivalis fimbrillin polypeptide in Escherichia coli: purification, physicochemical and immunochemical characterization, and binding characteristics. Infect Immun 61:3570-3

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