Colin Kretz

Colin Kretz

PhD, McMaster University

Assistant Professor

905 527 4322 x 40716

Research Interests

Our lab investigates the pathophysiology of blood clotting disorders, and are currently focused on two diseases. Von Willebrand Disease (VWD) is the most common inherited bleeding disorder, and is caused by defects in von Willebrand Factor that disrupt its ability to recruit platelets to sites of blood vessel damage. Thrombotic thrombocytopenic purpura (TTP) is a thrombotic disorder caused by acquired or inherited deficiency in the protease ADAMTS13. Current projects seek to understand (a) genetic variation in VWD and TTP and (b) the structure/function of ADAMTS13 and von Willebrand factor.

Key areas                        

High throughput mutagenesis screens.

Identification of novel protease substrates.

Role of proteases in bleeding disorders and cardiovascular disease.

We use conventional techniques in biochemistry and molecular biology as well as high throughput sequencing, mass spectometry, and genome editing.

Selected Publications

Kretz CA,Dai M,Soylemez O,Yee A,Desch KC,Siemieniak D,Tomberg K,Kondrashov FA,Meng F,GinsburgD (2015) Massively parallel enzyme kinetics reveals the substrate recognition landscape of the metalloprotease ADAMTS13. Proc Natl Acad Sci USA (2015) Jul 28;112(30):9328-33.

Liu Y,Kretz CA,Maeder ML,Richter CE,Tsao P,Vo AH,Huarng MC,Rode T,Hu Z,Mehra R,Olson ST,Joung JK,ShavitJA Targeted mutagenesis of zebrafish antithrombin III triggers disseminated intravascular coagulation and thrombosis, revealing insight into function. Blood (2014) Jul 3;124(1):142-50.

Desch KC,Kretz CA,Yee A,Gildersleeve R,Metzger K,Agrawal N,Cheng J,GinsburgD Probing ADAMTS13 substrate specificity using phage display. PLoS One (2015) Apr 7;10(4):e0122931.

Lab Profiles

Ji Zhou, MD, Research Associate
Jim Fredenburgh, PhD, Research Associate
Iqbal Jaffer, MBBS, MD Fellow, PhD
Tammy Truong, MSc, PhD Candidate
Vishal Patel, MSc Candidate
Alan Stafford, MSc, Research Assistant- Retired
Beverly Leslie, Research Assistant - Retired

Lab Profiles

Nima Vaezzadeh, PhD Candidate
Ran Ni, PhD Candidate
Shana Aadl Shaya, MSc Candidate

Lab Profiles

Dhruva Dwivedi, PhD, Research Associate
Ellen McDonald, Research Coordinator
Peter Grin, MSc Candidate
Neha Sharma, MSc Candidate
Nicole Zytaruk, RN, Research Coordinator

Lab Profiles

Kim Nagel, Clinical Research Coordinator
Helen Atkinson, Research Assistant
Netnapha Paredes, Research Assistant
Laura Calvert, MSc Candidate
Gabriela Chang, MSc Candidate
Sajjad Afraz, MSc Candidate