Kathleen Tweeten

Professor, Department Chair

651-690-6629

katweeten@stkate.edu

Kay Tweeten is a professor of biology at St. Catherine University. Her courses in molecular biology, cell biology, and immunology feature problem-based learning, case studies, and student-designed research projects. She has collaborated with numerous students in her research laboratory on cellular and molecular analysis of regeneration, degrowth, sexual reproduction, and ploidy levels in populations of the freshwater annelid, Lumbriculus. She involves students in experimental design, data collection and interpretation, and dissemination of results. The research environment provided allows students autonomy in their thinking and helps them explore their potentials as scientists. They learn the value of perseverance through frustrations that accompany experimentation, of doing research with integrity and thoroughness, and of embracing how mistakes may provide for progress. She has received Teaching Awards, the Myser Family Faculty Mentoring Award, and was Endowed Chair in the Sciences. She has expertise in collaborative research, mentoring, faculty development, and curriculum innovation.

  • Cellular and Molecular Mechanisms of Regeneration in freshwater oligochaetes from the Lumbriculus complex
  • Aspects of Sexual Reproduction in Lumbriculus Including Seasonal Variations in Cocoon Production
  • Patterns of Cleavage and Gastrulation in Lumbriculus Embryos

Certificate of Advanced Study, Health and Wellness Counseling
St. Catherine University, St. Paul, Minnesota, 1999

Ph.D., Biochemical Virology
Kansas State University, Manhattan, Kansas, 1977

Bachelor of Science, Bacteriology
North Dakota State University, Fargo, North Dakota, 1973

St. Catherine University. (2015). Myser Family Excellence in Faculty Mentoring Award

St. Catherine University. (2012–Present). Carondelet Scholar

Endowed Professor in the Sciences, 2003–2006

St. Catherine University. (2001). Myser Family Foundation Teaching Excellence Award

St. Catherine University. (1995). Faculty Teaching Award

Numerous St. Catherine University 3M Faculty/Student Collaborative Research Grants

St. Catherine University Faculty Development Grant for Gel Imaging System

Pilot Research Studies supported through NIH Extramural Associates Research Development Award #G11 HD039786 to The College of St. Catherine (2006-2009)

"Renewal of Humanities Education Through a New Core Curriculum", National Endowment for the Humanities, $164,900 to The College of St. Catherine, 1994–1996, (Co-writer with B. Fogarty)

Molecular biology instrumentation grant from National Science Foundation Grant #USE-9050607, $35,133, March 1990–Aug. 1992 and $50,000 microscope grant from Deluxe Corporation Foundation, 1994

Curriculum Development grant from NSF Undergraduate Curriculum and Course Development Program, Grant #USE-9156287, $74,331 1992–1994 (Co-investigator with D. Wygal and C. Norton)

Tweeten, K. & Reiner, A. (2012). "Characterization of Lumbriculus variegatus Serine Proteases and Their Role in Regeneration." Invertebrate Biology. (131, 4, 322-332)

K. A. Tweeten and J. Muñoz Bravo. 2008. Q’apha, a Pest Causing Skin Irritations in Nor Yungas Region of Bolivia, Identified as a Chigger Mite, Eutrombicula batatas. Tropical Doctor. 38:63-64.

Tweeten, K. & Anderson, A. (2008). "Analysis of cell proliferation and migration during regeneration in Lumbriculus variegatus (Clitellata: Lumbricululidae)." BIOS 79(4): 183-190.

K. A. Tweeten, M. J. Myers, L. H. Gildesoph and others. 2007. Animating a Biology Curriculum with Research. IN Developing and Sustaining a Research-Supportive Curriculum: A Compendium of Successful Practices, Kerry K. Karukstis and Timothy E. Elgren, eds., Council on Undergraduate Research, Washington, D.C.

Martha M. Phillips, Lynne H. Gildensoph, Marcella J. Myers, Cynthia G. Norton, Andrea M. Olson, Kathleen A. Tweeten, and Deborah D. Wygal. 2007. Investigative Labs in Biology: The Importance of Attending to Team Dynamics. Journal of College Science Teaching. 37:23-27.

K. A. Tweeten, M. J. Myers, L. H. Gildesoph and others. 2006. Animating a Biology Curriculum with Research. Council on Undergraduate Research Quarterly 26(3):122-127.

C. G. Norton, L. H.. Gildensoph, M. M. Phillips, D. D. Wygal, K. H. Olson, J. J. Pelligrini, and K. A. Tweeten. 1997. Reinvigorating Introductory Biology: A Theme-based, Investigative Approach to Teaching Biology Majors. J. College Science Teaching 27:121-126.

Flow Cytometry Analysis of DNA Ploidy Levels and Protein Profiles Distinguish Between Populations of Lumbriculus (Annelida: Clitellata). Kay Tweeten and Samantha Morris. Annual Meeting of the Society for Integrative and Comparative Biology, Portland, Oregon (January 2016).

Effect of Matrix Metalloproteinase Inhibitors on Regeneration in Lumbriculus variegatus. Shakirah Tumisiime* and Kay Tweeten. 24th Annual Developmental Biology Symposium, It Takes a Village: Symbiosis and Development, University of MN, (September 2015).

Tweeten, K. (2015). "Growing the Culture of Scholarship at St. Kate's." Opening Workshop Week 2015

Tweeten, K. & Tumisiime, S. (2015). "Effect of Matrix Metalloproteinase Inhibitors on Regeneration in Lumbriculus." Sr. Seraphim Gibbons Undergraduate Research Symposium

Tweeten, K. & Morris, S. (2015). "Development of a Flow Cytometry Method for Analysis of DNA Ploidy in Lumbriculus." MN Academy of Sciences

Tweeten, K. & Danielson, K. (2015). "Analysis of Extracellular Matrix Molecules in Lumbriculus Cocoons." National Council of Undergraduate Research Annual Meeting

Tweeten, K. & Khan, N. (2014). "Implementing a Plastic-embedding System for Histological Analysis of Reproductive Structures in Lumbriculus." St. Catherine University Fall 2014 Biology Symposium

Tweeten, K. & Danielson, K. (2014). "Analysis of Extracellular Matrix Molecules in Lumbriculus Cocoons." 23rd Annual Developmental Biology Symposium: “Coping with Change: Environmental and Nutritional Control of Development,” University of MN

Tweeten, K. & Nikrad, J. (2014). "Starvation-Induced Changes in the Morphology and Physiology of Lumbriculus vareigatus." Sister Seraphim Gibbons Undergraduate Research Symposium, St. Catherine University

Tweeten, K. & Brick, S. (2014). "Histological Analysis of Embryonic Development and Regeneration of Reproductive Structures in Lumbriculus." Sister Seraphim Gibbons Undergraduate Research Symposium, St. Catherine University

Tweeten, K. & Nikrad, J. (2014). "Starvation-Induced Changes in the Morphology and Physiology of Lumbriculus vareigatus." Annual Meeting of the Society for Integrative and Comparative Biology, Austin, Texas

Tweeten, K. & Welter, J. (2013). "Architecture of Creation: Earth, Life and Diversity. Jill Welter and Kay Tweeten." Hedgerow Seminar Fall 2013, Wisdom Ways Center for Spirituality, St. Paul, MN.

Tweeten, K. (2013). "Evidence for Regeneration of Anterior and Posterior Tissues in Embryos from the Freshwater Annelid, Lumbriculus. Kay Tweeten." 22nd Annual Developmental Biology Symposium, “Tissue and Organ Regeneration: Uncharted Territory or Developmental Déjà-Vu?” University of MN Developmental Biology Center, University of MN

Tweeten, K. & Nikrad, J. (2013). "PCR-DGGE Analysis of Changes in the Intestinal Microbiota of the Freshwater Oligochaete Lumbriculus variegatus During Starvation." American Society for Microbiology 113th General Meeting

Tweeten, K., Abitz, A. & Vang, Y. (2013). "Regeneration in Lumbriculus embryos is dependent on amputation site along the AP axis." Sister Seraphim Gibbons Undergraduate Research Symposium

Tweeten, K. (2012). "Regeneration in Lumbriculus embryos is dependent on amputation site along the AP axis." 21st Annual Developmental Biology Symposium, “Developmental transitions: Timing is Everything,” University of MN Developmental Biology Center

Tweeten, K. & Abitz, A. (2012). "Patterns of Cleavage and Gastrulation in Embryos of Freshwater Oligochaetes from the Lumbriculus Complex." Annual Meeting of the Society for Integrative and Comparative Biology