Suzanne Fay Dagher

Works (9)

Updated: December 5th, 2025 14:02

2025 article

Gut Microbial Dipeptidyl Peptidase-4 and Associated Prolyl Tripeptidyl Peptidases: A Novel Classification and Response to Inhibitors

Aljumaah, M., Isawi, I., Roach, J., Hu, Y., Dagher, S., Bruno-Barcena, J., … Azcarate-Peril, M. A. (2025, December 3).

By: M. Aljumaah *, I. Isawi *, J. Roach *, Y. Hu *, S. Dagher n , J. Bruno-Barcena n , R. Al-Zoubi *, M. Azcarate-Peril*

topics (OpenAlex): Peptidase Inhibition and Analysis; Diabetes Treatment and Management; Neuropeptides and Animal Physiology
Sources: NC State University Libraries, NC State University Libraries
Added: December 4, 2025

2023 article

Structural analysis and functional evaluation of the disordered ß–hexosyltransferase region from Hamamotoa (Sporobolomyces) singularis

Dagher, S. F., Vaishnav, A., Stanley, C. B., Meilleur, F., Edwards, B. F. P., & Bruno-Bárcena, J. M. (2023, December 14). Frontiers in Bioengineering and Biotechnology, Vol. 11.

By: S. Dagher n , A. Vaishnav*, C. Stanley, F. Meilleur n , B. Edwards * & J. Bruno-Bárcena n 

Contributors: S. Dagher n , A. Vaishnav*, C. Stanley, F. Meilleur n , B. Edwards * & J. Bruno-Bárcena n 

author keywords: disorder; expression; kinetics; mutagenesis; transglycosylation; Hamamotoa singularis
topics (OpenAlex): Enzyme Production and Characterization; Glycosylation and Glycoproteins Research; Carbohydrate Chemistry and Synthesis; Enzyme Structure and Function
TL;DR: Functional analysis of each glycosylation site found within the C-terminal domain revealed reduced total secreted protein activity, indicating that glycosylation at all four locations is required by the host for the secretion of active enzyme and independent of the removed disordered N-terminal region. (via Semantic Scholar)
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Sources: Web Of Science, ORCID, NC State University Libraries
Added: December 31, 2023

2021 article

Correction to: The pleiotropic effects of prebiotic galacto-oligosaccharides on the aging gut

Arnold, J. W., Roach, J., Fabela, S., Moorfield, E., Ding, S., Blue, E., … Azcarate-Peril, M. A. (2021, February 26). Microbiome, Vol. 9.

By: J. Arnold *, J. Roach *, S. Fabela*, E. Moorfield*, S. Ding *, E. Blue*, S. Dagher n , S. Magness n ...

topics (OpenAlex): Gut microbiota and health; Probiotics and Fermented Foods; Microbial Metabolites in Food Biotechnology
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2. Zero Hunger (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: March 22, 2021

2021 article

Safety and Modulatory Effects of Humanized Galacto-Oligosaccharides on the Gut Microbiome

Arnold, J. W., Whittington, H. D., Dagher, S. F., Roach, J., Azcarate-Peril, M. A., & Bruno-Barcena, J. M. (2021, April 7). Frontiers in Nutrition, Vol. 8, p. 142.

By: J. Arnold *, H. Whittington n, S. Dagher n , J. Roach *, M. Azcarate-Peril * & J. Bruno-Barcena n 

author keywords: galactooligosaccharide (GOS); N-Acetyl-D-lactosamine (LacNAc); safety; human milk oligosaccharides (HMOs); LacNAc synthesis; mouse models
topics (OpenAlex): Infant Nutrition and Health; Digestive system and related health; Probiotics and Fermented Foods
TL;DR: The study demonstrated the biological synthesis of hGOS, and signaled its safety and ability to modulate the gut microbiome in vivo, promoting the growth of beneficial microorganisms, including Bifidobacterium and Akkermansia. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries, ORCID
Added: April 9, 2021

2021 article

The pleiotropic effects of prebiotic galacto-oligosaccharides on the aging gut

Arnold, J. W., Roach, J., Fabela, S., Moorfield, E., Ding, S., Blue, E., … Azcarate-Peril, M. A. (2021, January 28). Microbiome, Vol. 9.

By: J. Arnold *, J. Roach *, S. Fabela*, E. Moorfield*, S. Ding *, E. Blue*, S. Dagher n , S. Magness n ...

author keywords: Gut microbiome; Prebiotics; Bifidobacterium; Intestinal permeability; Host-microbiota interactions; Diet; Antibiotics; Metagenomics; Transcriptomics; Organoids
MeSH headings : Aging / drug effects; Aging / genetics; Aging / physiology; Animals; Female; Gastrointestinal Microbiome / drug effects; Intestines / drug effects; Intestines / microbiology; Intestines / physiology; Mice; Mice, Inbred C57BL; Oligosaccharides / pharmacology; Phosphatidylinositol 3-Kinases / metabolism; Prebiotics; Proto-Oncogene Proteins c-akt / metabolism
topics (OpenAlex): Gut microbiota and health; Clostridium difficile and Clostridium perfringens research; Probiotics and Fermented Foods
TL;DR: Stools from mice exhibiting variable bifidogenic response to GOS injected into colon organoids in the presence of prebiotics reproduced the response and non-response phenotypes observed in vivo suggesting that the composition and functionality of the microbiota are the main contributors to the phenotype. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries
Added: February 22, 2021

2015 article

A novel N-terminal region of the membrane β-hexosyltransferase: its role in secretion of soluble protein by Pichia pastoris

Dagher, S. F., & Bruno-Bárcena, J. M. (2015, November 9). Microbiology, Vol. 162, pp. 23–34.

By: S. Dagher n  & J. Bruno-Bárcena n 

Contributors: S. Dagher n  & J. Bruno-Bárcena n 

MeSH headings : Amino Acid Motifs; Amino Acid Sequence; Cell Membrane / chemistry; Cell Membrane / enzymology; Cell Membrane / genetics; Fungal Proteins / chemistry; Fungal Proteins / genetics; Fungal Proteins / metabolism; Gene Expression; Hexosyltransferases / chemistry; Hexosyltransferases / genetics; Hexosyltransferases / metabolism; Kinetics; Molecular Sequence Data; Pichia / genetics; Pichia / metabolism; Protein Transport; Yeasts / chemistry; Yeasts / enzymology; Yeasts / genetics
topics (OpenAlex): Polysaccharides and Plant Cell Walls; Enzyme Production and Characterization; Glycosylation and Glycoproteins Research
TL;DR: Lead interference was demonstrated when MFα preceded the putative classical rBHT(1-22) leader, explaining the limited secretion of soluble protein by P. pastoris strains carrying combinations of the predicted structural domains. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2012 article

Heterologous Expression of a Bioactive β-Hexosyltransferase, an Enzyme Producer of Prebiotics, from Sporobolomyces singularis

Dagher, S. F., Azcarate-Peril, M. A., & Bruno-Bárcena, J. M. (2012, December 16). Applied and Environmental Microbiology, Vol. 2, pp. 1241–1249.

By: S. Dagher n , M. Azcarate-Peril * & J. Bruno-Bárcena n 

Contributors: S. Dagher n , M. Azcarate-Peril * & J. Bruno-Bárcena n 

MeSH headings : Basidiomycota / enzymology; Basidiomycota / genetics; Cloning, Molecular; Enzyme Inhibitors / metabolism; Enzyme Stability; Escherichia coli / enzymology; Escherichia coli / genetics; Galactosyltransferases / chemistry; Galactosyltransferases / genetics; Galactosyltransferases / metabolism; Gene Expression; Glucose / metabolism; Hydrogen-Ion Concentration; Kinetics; Lactose / metabolism; Pichia / enzymology; Pichia / genetics; Prebiotics; Recombinant Proteins / chemistry; Recombinant Proteins / genetics; Recombinant Proteins / metabolism; Temperature
topics (OpenAlex): Microbial Metabolites in Food Biotechnology; Enzyme Production and Characterization; Digestive system and related health
TL;DR: The heterologous expression of an optimized synthetically produced version of the β-hexosyltransferase gene (Bht) from Sporobolomyces singularis is described, the first report of a bioactive BHT from S. singularis that has been heterologously expressed. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2011 article

Meta-Analysis and Functional Validation of Nutritional Requirements of Solventogenic Clostridia Growing under Butanol Stress Conditions and Coutilization ofd-Glucose andd-Xylose

Heluane, H., Evans, M. R., Dagher, S. F., & Bruno-Bárcena, J. M. (2011, May 21). Applied and Environmental Microbiology, Vol. 77, pp. 4473–4485.

By: H. Heluane  n, M. Evans n, S. Dagher n  & J. Bruno-Bárcena n 

Contributors: H. Heluane  n, M. Dagher n  & J. Bruno-Bárcena n 

MeSH headings : Biofuels; Biotechnology / methods; Butanols / toxicity; Clostridium beijerinckii / drug effects; Clostridium beijerinckii / growth & development; Clostridium beijerinckii / metabolism; Culture Media / chemistry; Fermentation; Gene Expression Profiling; Gene Expression Regulation, Bacterial; Glucose / metabolism; Stress, Physiological; Xylose / metabolism
topics (OpenAlex): Biofuel production and bioconversion; Microbial Metabolic Engineering and Bioproduction; Enzyme Production and Characterization
TL;DR: Results indicated that C. beijerinckii SA-1 was able to coferment hexose/pentose sugar mixtures in the absence of a glucose repression effect, and the analysis suggests that the solvent and acid resistance mechanisms found in this strain are differentially regulated compared to strain NRRL B-527. (via Semantic Scholar)
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2. Zero Hunger (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

2010 article

Cell Immobilization for Production of Lactic Acid

Dagher, S. F., Ragout, A. L., Siñeriz, F., & Bruno-Bárcena, J. M. (2010, January 1). Advances in Applied Microbiology, Vol. 71, pp. 113–148.

By: S. Dagher n , A. Ragout*, F. Siñeriz * & J. Bruno-Bárcena n 

Contributors: S. Dagher n , A. Ragout*, F. Siñeriz * & J. Bruno-Bárcena n 

MeSH headings : Biofilms / growth & development; Bioreactors; Biotechnology / methods; Cells, Immobilized; Fermentation; Industrial Microbiology / methods; Lactic Acid / biosynthesis; Lactobacillus / classification; Lactobacillus / growth & development; Lactobacillus / metabolism; Lactobacillus / physiology
topics (OpenAlex): Probiotics and Fermented Foods; Enzyme Production and Characterization; Bacterial biofilms and quorum sensing
TL;DR: This chapter presents the results of a search for optimum parameters of lactic acid producing microorganisms and how they are affected by the physical, chemical, and biological variables of the process. (via Semantic Scholar)
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6. Clean Water and Sanitation (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 6, 2018

Employment

Updated: November 1st, 2021 12:02

Mammae Biosciences, Inc Raleigh, NC, US

North Carolina State University Raleigh, NC, US
Scientist Plant and Microbial Biology

Education

Updated: December 13th, 2020 09:06

Michigan State University East Lansing, MI, US
PHD Department of Microbial and Molecular Genetics

Funding History

Funding history based on the linked ORCID record. Updated: October 2nd, 2024 14:04

grant August 1, 2023 - August 1, 2024
SBIR Phase I:Development of an enzymatic method to produce human milk oligosaccharides at commercial scale
NSF

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