Michitaka Suzuki, PhD

Valdivia – Lab Members

Research Scientist
272 Jones Bldg
Box 3580 DUMC
Durham, NC 27710
Phone: (919) 668-2450
Fax: (919) 681-9193

 Research Interest:

My main research focus has been to understand the physiological roles that lipids play in cellular and organismal physiology. As a graduate student, I worked on Niemann-Pick type C (NPC) disease, an autosomal recessive disorder that causes accumulation of cellular free cholesterol in neurons, which leads to neurodegeneration. Why this disorder causes accumulation of free cholesterol remains unknown. From my graduate school experience, I recognized the importance of lipids in health and disease. As a postdoctoral fellow at Nagoya University, I worked with Lipid Droplets, and showed that aside from serving as a reservoir of lipids, they also function as a platform for degradation of proteins (specially Apolipoprotein B). Recently, lipid droplets have also been recognized to potentiate immune responses to infection. In Dr. Valdivia’s Lab I am currently working on characterizing roles for lipid droplets during host immune response to infection by Chlamydia.

Personal Interests:

To search for foods including the lipids that is good for health!!!

 Publications List:

Suzuki M, Murakami T, Cheng J, Kano H, Fukata M, Fujimoto T. (2015) ELMOD2 is anchored to lipid droplets by palmitoylation and regulates ATGL recruitment. Biol. Cell in press

Imai N*, Suzuki M*, Hayashi K, Ishigami M, Hirooka Y, Abe T, Shioi G, Goto H, Fujimoto T. (2015) Hepatocyte-specific depletion of UBXD8 induces periportal steatosis in mice fed high-fat diet. PLoS One 10, e0127114

Ohsaki Y, Suzuki M, Fujimoto T. (2013) Open questions in lipid droplet biology. Chem Biol.  

Suzuki M, Iio Y, Saito N, Fujimoto T. (2013) Protein kinase Cη is targeted to lipid droplets. Cell Biol. 139, 505-511.

Suzuki M*, Ohsaki* Y, Tatematsu T, Shinohara Y, Maeda T, Cheng J, Fujimoto T. (2012) Translation inhibitors induce formation of cholesterol ester-rich lipid droplets. PLoS One 7, e42379.

Suzuki M, Otsuka T, Ohsaki Y, Cheng J, Taniguchi T, Hashimoto H, Taniguchi H, Fujimoto T. (2012) Derlin-1 and UBXD8 are engaged in dislocation and degradation of lipidated ApoB-100 at lipid droplets. Biol. Cell 23, 800-810.

Suzuki M, Shinohara Y, Ohsaki Y, Fujimoto T. (2011) Lipid droplets: size matters. Electron Microsc. 60, S101-116.

Ohsaki Y, Suzuki M, Shinohara Y, Fujimoto T. (2010) Lysosomal accumulation of mTOR is enhanced by rapamycin. Cell Biol. 133, 477-480.

Ohsaki Y, Shinohara Y, Suzuki M, Fujimoto T. (2009) A pitfall in using BODIPY dyes to label lipid droplets for fluorescence microscopy. Cell Biol. 133, 477-480.

Cheng J, Fujita A, Ohsaki Y, Suzuki M, Shinohara Y, Fujimoto T. (2009) Quantitative electron microscopy shows uniform incorporation of triglycerides into existing lipid droplets. Cell Biol. 132, 281-291.

Ohsaki Y, Cheng J, Suzuki M, Shinohara Y, Fujita A, Fujimoto T. (2009) Biogenesis of cytoplasmic lipid droplets: from the lipid ester globule in the membrane to the visible structure. Biophys. Acta. 1791, 399-407.

Ohsaki Y, Cheng J, Suzuki M, Fujita A, Fujimoto T. (2008) Lipid droplets are arrested in the ER membrane by tight binding of lipidated apolipoprotein B-100. Cell Sci. 121, 2415-2422.

Fujimoto T, Ohsaki Y, Cheng J, Suzuki M, Shinohara Y. (2008) Lipid droplets: a classic organelle with new outfits. Cell Biol. 130, 263-279.

Lei K, Ninomiya H, Suzuki M, Inoue T, Sawa M, Iida M, Ida H, Eto Y, Ogawa S, Ohno K, Suzuki Y. (2007) Enzyme enhancement activity of N-octyl-beta-valienamine on beta-glucosidase mutants associated with Gaucher disease. Biophys. Acta. 1772, 587-596.

Suzuki M, Sugimoto Y, Ohsaki Y, Ueno M, Kato S, Kitamura Y, Hosokawa H, Davies JP, Ioannou YA, Vanier MT, Ohno K, Ninomiya H. (2007) Endosomal accumulation of Toll-like receptor 4 causes constitutive secretion of cytokines and activation of signal transducers and activators of transcription in Niemann-Pick disease type C (NPC) fibroblasts: a potential basis for glial cell activation in the NPC brain. Neurosci. 27, 1879-1891.

Ohsaki Y, Sugimoto Y, Suzuki M, Hosokawa H, Yoshimori T, Davies JP, Ioannou YA, Vanier MT, Ohno K, Ninomiya H. (2006) Cholesterol depletion facilitates ubiquitylation of NPC1 and its association with SKD1/Vps4. Cell Sci. 119, 2643-2653.

Ohsaki Y, Sugimoto Y, Suzuki M, Kaidoh T, Shimada Y, Ohno-Iwashita Y, Davies JP, Ioannou YA, Ohno K, Ninomiya H. (2004) Reduced sensitivity of Niemann-Pick C1-deficient cells to theta-toxin (perfringolysin O): sequestration of toxin to raft-enriched membrane vesicles. Cell Biol. 121, 263-272.