Chang, Ying Chih
EDUCATION AND POSITIONS HELD:
- B.S., Chemical Engineering,
National Taiwan University, Taipei, Taiwan
- Ph.D., Chemical Engineering,
, CA, 1998 Stanford University
- Senior Engineer: Department of Advanced Technology, MMC (Maxtor Corp.),
1998 San Jose, CA, USA,
- Postdoctoral Scientist,
Stanford University, CA/ Affymetrix Corp, 1998-1999 Santa Clara, CA, USA,
- Assistant Professor, Department of Chemical Engineering and Materials Science, and Department of Biomedical Engineering, University of California, Irvine, USA, 1999-2003
- Associate Research Fellow,
Genomics Research Center, Academia Sinica, 2004- Taipei, Taiwan,
- Research Fellow,
Genomics Research Center, Academia Sinica, 2011-present Taipei, Taiwan,
Biomimetic Smart Materials and Interfaces
My research focus first aims at the protocol design for the construction of a supramolecular architecture consisting of biomolecules or biomimetic materials.
One of the greatest challenges will be the development of the capability to control the molecular organization from its natural form when interacting with artificial interfaces, thus possibly leading to useful applications that require the incorporation of non-biologically originated materials. The ultimate goal is to establish engineering methodology to fabricate both bio- and non-biological materials with novel functionality inspired by the nature.
For instance, it is known that various biological functions ranging from catalyzing, transporting, to storing energy, etc, arise from the conformational transition of proteins (polypeptides) molecules. Thus, studying the conformational transition of both natural or artificial polypeptide materials might lead to the creation of a novel category of “smart materials” which can be extremely sensitive to the external stimulants from ionic strength, pH, chemicals, lights, heats, and electro-magnetic fields. In our laboratory, we will identify the key factors to establish the protocols, through a series of molecular design, synthesis, functional and structural characterization.
Likewise, various novel supramolecular structures or nanocomposites formed by macromolecules, small chemicals, or nanoparticles, can be readily assembled based on the same design principles.
Rare Cell Isolation, Purification and Maintenance by Smart Surfaces and Microfluidics
We designed and synthesized materials to systematically study the cell-materials interactions which are critical to tissue engineering and fundamental understanding of biological phenomena. By creating new architectures of materials assemblies, we wish to uncover novel properties, which in turn provide unique applications. In the biological applications, we have demonstrated the applicability of these non-biological originated interfaces on controlling cell fate. In particular, we have especially focused on the co-culture systems such as circulating tumor cells in blood, and stem cells in primary cells. These rare cells are important, however, are extremely rare and hard to control. With our available tools, in one case, we are able to demonstrate that the nanostructures of collagen I fibrils are important to control stroma cells, which in turn regulate the self-renewal property of pulmonary stem/ progenitor cells. While there is no stroma cells, the nanostructures of collagen I fibrils become less relevant to the stem cell fate (Huang et al, Biomaterials 2010). In another case, we are able to purify and control fetal liver stem cells in forming suspended spheres, semi-suspended spheres; using the same materials in the presence of lipid bilayers, the maintenance period of stem cells can be doubled. By incorporating the micro-fabricated device, which provide external force fields (mechanically, electrically, and chemically) with both spatial and temporal resolution, we will be able to take one step further in controlling these co-cultured systems in high precision even more efficiently. We will focus on mediating materials-cell interactions to efficiently select, purify, and maintain rare cells such as stem cells in primary culture and circulating tumor cells in blood.
- Hsuan-Ang Tsai , Chia-Ning Shen , and Ying-Chih Chang*, 2012, “The Use of Surface Properties to Control the Growth and Differentiation of Mouse Fetal Liver Stem/Progenitor Cell Colonies”, BIOMACROMOLECULES, 13 (11), 3483–3493. (SCI)
- Po-Yuan Tseng and Ying-Chih Chang*, 2012, “Tethered Fibronectin Liposomes on Supported Lipid Bilayers as a Pre-Packaged Controlled-Release Platform for Cell-Based Assays”, BIOMACROMOLECULES, 13(8), 2254–2262. (SCI)
- Jen-Chia Wu, Chia-Chun Chen, Kuei-Hsien Chen, and Ying-Chih Chang*, 2011, “Controlled Growth of Aligned Alpha-Helical Polypeptide Brushes for Tunable Electrical Conductivity”, Applied Physics Letters, 98, 133304. (SCI)
- Chun-Jen Huang, Yi-Lun Chien, Tai-Yen Ling, Huan-Chien Cho, John Yu*, and Ying-Chih Chang*, 2010, “The Influence of Collagen Film Nanostructure on Pulmonary Stem Cells and Collagen-Stromal Cell Interactions”, BIOMATERIALS, 31(32), 8271-8280. (SCI)
- Chih-Tsung Yang, Yuli Wang, Ying-Chih Chang*, 2010, “Effect of Solvents and Temperature on the COnformation of Poly(beta-benzyl-L-aspartate) Brushes”, BIOMACROMOLECULES, 11(5), 1308-1313. (SCI)
- Chun-Jen Huang, Po-Yuan Tseng, and Ying-Chih Chang*, 2010, “Effects of Extracellular Matrix Protein Functionalized Fluid Membrane on Cell Adhesion and Matrix Remodeling”, BIOMATERIALS, 31, 7183-7195. (SCI)
- Hsuan-Ang Tsai, I-Chi Lee, Ruei-Ren Wu, Hsiao-Yuan Chang, Chia-Ning Shen*, Ying-Chih Chang*, 2010, “Selection, Enrichment, and Maintenance of Self-Renewal Liver Stem/Progenitor Cells Utilizing Polypeptide Polyelectrolyte Multilayer Films”, BIOMACROMOLECULES, 11(4), 994-1001. (SCI)
- Chun-Jen Huang, Nam-Joon Cho, Chih-Jung Hsu, Curtis W. Frank*, Ying-Chih Chang*, 2010, “Type I Collagen-Functionalized Supported Lipid Bilayer as a Cell Culture Platform”, BIOMACROMOLECULES, 11(5), 1231-1240. (SCI)
- Di-Yan Wang, Tzu-Shen Teng, Yi-Chou Wu, Yi-Cheng Lee, Kuei-Hsien Chen, Chung-Hsuan Chen, Ying-Chih Chang*, Chia-Chun Chen*, 2009, “Silver-Nanoparticle-Conjugated Polypeptide Brushes for Surface-Enhanced Raman Scattering”, JOURNAL OF PHYSICAL CHEMISTRY C, 113(31), 13498-13504. (SCI)
- Chih-Tsung Yang, Yuli Wang, and Ying-Chih Chang*, 2009, “Controlled molecular organization of surface macromolecular assemblies based on stimuli-responsive polypeptide brushes.”, BIOMACROMOLECULES, 10(1), 58-65. (SCI)
- Chen CP, Ganguly A, Wang CH, Hsu CW, Chattopadhyay S, Hsu YK, Chang YC, Chen KH, Chen LC, 2009, “Label-free dual sensing of DNA molecules using GaN nanowires.”, ANALYTICAL CHEMISTRY, 81(1), 36-42. (SCI)
- Jen-Chia Wu, Yuli Wang, Chia-Chun Chen*, and "Ying-Chih Chang*", 2008, “Biomimetic Synthesis of Silica Films Directed by Polypeptide Brushes”, CHEMISTRY OF MATERIALS, 20, 6148-6156. (SCI)
- Jun Li, and Ying-Chih Chang*, 2005, “Preparation of End-Grafted Polymer Brushes by Nitroxide-Mediated Free Radical Polymerization of Vaporized Vinyl Monomers”, LANGMUIR, 21, 9562-9567. (SCI)
- Y.L. Wang and Y. C. Chang*, 2003, “Patterning of Polypeptide Thin Films by the Combination of Surface-Initiated Vapor Deposition Polymerization and Photolithography”, ADVANCED MATERIALS, 15(4), 290-293. (SCI)
- Y. L. Wang and Y. C. Chang*, 2003, “Preparation of Unidirectional End-Grafted alpha-Helical Polypeptides by Solvent Quenching”, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 125, 6376-6377. (SCI)
- Y.L. Wang and Y.C. Chang*, 2003, “Synthesis and Conformational Transition of Surface Tethered Polypeptide: Poly (L-glutamic acid)”, MACROMOLECULES, 36, 6503-6510. (SCI)
- Y. L. Wang and Y.C. Chang*, 2003, “Synthesis and Conformational Transition of Surface Tethered Polypeptide: Poly L-lysine”, MACROMOLECULES, 36, 6511-6518. (SCI)
- Y. Wang and Y. -C. Chang*, 2002, “Grafting of Homo- Block Co-polypeptides on Solid Substrates by an Improved Surface-Initiated Vapor Deposition Polymerization”, LANGMUIR, 18, 9859-9866. (SCI)