John Heikkila carries out research in molecular and cell biology and is a world expert on amphibian heat shock protein gene expression and function.
- Physiology, Cell and Developmental Biology
- Molecular Genetics
All organisms undergo a heat shock or stress response when exposed to temperatures a few degrees above their normal or to certain environmental stressors – including some heavy metals or oxidizing agents – or pathophysiological conditions such as loss of blood flow, fever, tissue injury and disease states. During the stress response, cells manufacture heat shock proteins (HSPs) – a class of molecular chaperone – that help repair the damage and provide tolerance against further stresses. HSPs are synthesized to maintain the solubility of partially unfolded protein, prevent their aggregation into toxic forms and assist in their refolding. Dr. Heikkila is actively researching HSP gene expression using the frog model system, Xenopus laevis.
Professor Heikkila teaches both undergraduate and graduate courses. Course offerings have included
- BIOL 308 Principles of Molecular Biology
- BIOL 438 Molecular Biology of Animal Development
- BIOL 667 Animal Molecular Biology
- BIOL 680/681 Specialized Study
Recent publications include
Heikkila, J.J. (2017) The expression and function of hsp30-like small heat shock protein genes in amphibians, birds, fish, and reptiles. Comp. Biochem. Physiol. Part A. 203, 179-192.
Shirriff, C.S., Heikkila, J.J. (2017) Characterization of cadmium chloride-induced BiP accumulation in Xenopus laevis A6 kidney epithelial cells. Comp. Biochem. Physiol. Part C. 191, 117-128.
- Khamis, I., Chan, D.W., Shirriff, C.S., Campbell, J.H., Heikkila, J.J. 2016. Expression and localization of the Xenopus laevis small heat shock protein, HSPB6 (HSP20), in A6 kidney epithelial cells. Comp. Biochem. Physiol. A. Molec. Integr. Physiol. 201: 12-21.
- Khan, S., Khamis, I., Heikkila, J.J. 2015. The small heat shock protein, HSP30, is associated with aggresome-like inclusion bodies in proteasomal inhibitor-, arsenite-, and cadmium-treated Xenopus kidney cells. Comp. Biochem. Physiol. A. Molecular and Integrative Physiology. 189: 130-140.
- Music, E., Khan, S., Khamis, I., Heikkila, J.J. 2014. Accumulation of heme oxygenase-1 (HSP32) in Xenopus laevis A6 kidney epithelial cells treated with sodium arsenite, cadmium chloride or proteasomal inhibitors. Comp. Biochem. Physiology C. Toxicol. Pharmacol. 166: 75-87.
- Khan, S., Heikkila, J.J. 2014. Distinct patterns of HSP30 and HSP70 degradation in Xenopus laevis A6 cells recovering from thermal stress. Comp. Biochem. Physiol. A. Molec. Integr. Biol. 168,1-10.
- Khamis, I., Heikkila, J.J. 2013. Enhanced HSP30 and HSP70 accumulation in Xenopus cells subjected to concurrent sodium arsenite and cadmium chloride stress. Comp. Biochem. Physiology C. Toxicol. Pharmacol. 158: 165-172.
- Khan, S., Rammeloo, A.W., Heikkila, J.J. 2012. Withaferin A induces proteasome inhibition, endoplasmic reticulum stress, the heat shock response and acquisition of thermotolerance. PloS One 7: e50547.
- Brunt, J.J., Khan, S., Heikkila, J.J. 2012. Sodium arsenite and cadmium chloride induction of proteasomal inhibition and HSP accumulation in Xenopus laevis A6 kidney epithelial cells. Comp. Biochem. Physiology C. Toxicol. Pharmacol. 155: 307-317.
Please see Professor Heikkila's Google Scholar profile for a current list of his peer-reviewed articles.
Awards and Distinctions
- Canada Research Chair in Stress Protein Gene Research (2002-2015)
- Post-Doctoral Fellowship, Alberta Heritage Foundation for Medical Research (1983-1984)
- Alberta Heritage Foundation for Medical Research Grant (1980-1983)
- Post-Doctoral Fellowship, Medical Research Council (1980-1983)
- Health Sciences Graduate Fellowship, University of Toronto (1980)
- Graduate Fellowship, Addiction Research Foundation (1977-1980)
- Open Graduate Fellowship, University of Toronto (1976-1977)
University of Waterloo Affiliations
- Canada Research Chair in Stress Protein Gene Research, Department of Biology (2002-2015)
- Waterloo institute memberships - CBB, IBMB, WI
Professional Associations and Service
- Journal Editorship
Cell Stress and Chaperones, Editorial Board Member
Biochemistry and Cell Biology, Editorial Board Member
1980 PhD Department of Zoology, University of Toronto
1976 MSc Department of Zoology, University of Toronto
1973 BSc Life Sciences, University of Toronto