TERMIS-NA 2010 Conference Agenda

Monday | Tuesday | Wednesday       

Podium Presentations - Monday, December 6, 2010
8:00amWelcome Announcement
8:05amPlenary Speaker I -Stem Cell Differentiation - Ronald McKay
9:00amAward Announcement and Presentation
9:30amCoffee Break with Poster Viewing
Session I 10:00 - 11:30am STEM CELLS IN REGENERATIVE MEDICINE BIOMATERIAL-BASED TISSUE REGENERATION CONTROLLING MICROENVIRONMENT AND CELL FATE NANOBIOTECHNOLOGY FOR REGENERATIVE MEDICINE
Session Chairs Arnold Caplan Rui Reis and David Kaplan Adam Engler and Ali Khademhosseini James Hickman and Kara McCloskey
Stem cells isolated from adult tissues are being re-infused into patients or animal models of disease with subsequent and substantial efficacy. This non-tissue engineering use is thought to involve site-specific secretion of bioactive molecules that modulate the immune activity and establish a regenerative microenvironment at the tissue damage sites. This session will focus on both human and animal cells and disease states and mechanism governing the regenerative medicine effects of infused cells. Biomaterial systems, from synthetic to biologics, offer a critical starting point for tissue regeneration. Scaffold designs that optimize tissue formation and function in vitro and in vivo by directing complex cell and tissue interactions are the key. Biomaterial systems that promote improved tissue structure and function, including new modes to process biomaterials or to chemically decorate systems to modulate selective biological interactions are some examples of the material systems to be covered in the session. In vivo outcomes based on these designs will also be included in the session. Cells in tissues exist in the context of their microenvironment. The microenvironment consists of the complex milieu of soluble factors such as hormones, ions, nutrients, and growth factors, and the extracellular matrix which provides both biochemical and biomechanical cues and acts as a reservoir for growth factors and proteases. Together these soluble and matrix factors provide biochemical and mechanical signals which regulate cell differentiation, survival, and function. This microenvironment is development, disease, and tissue specific. The development of engineered materials for tissue regeneration must mimic the appropriate microenvironment in order to stimulate tissue and developmental stage-specific cell function. This session will examine the role of soluble and matrix-derived cues in cell regulation and how current tissue engineered products attempt to provide appropriate microenvironmental cues to cells. Micro and nano- technologies are increasingly being developed and utilized for applications in tissue engineering and regenerative medicine. The unique properties of materials at these small scales has allowed the generation of a wide variety of new materials to be used in various tissue engineering applications as well as for engineered systems for in vitro diagnostic applications. These materials range from composites containing nanoparticles within polymers to multimodal nanoparticles as well as micro- and nano-textured surfaces for use in tailoring interfaces for cell culture and tissue assembly. This session will focus on novel micro- and nano-technologies being utilized in engineered tissues and will also address questions regarding their efficacy and safety of their use in regenerative medicine.
11:30amLunch Break with Poster Viewing
11:30amTERMIS-NA Council Meeting
Session II 1:00 - 2:30pm CELL TRACKING AND IMAGING BIOMATERIALS FABRICATION AND SYNTHESIS BIOREACTOR TECHNOLOGIES IMMUNOLOGY and TISSUE RESPONSES IN REGENERATIVE MEDICINE
Session Chairs Shay Soker and Joseph Frank Peter Ma and Bill Wagner Aaron Goldstein and Milica Radisic Julia Babensee
This session will focus on the various non-invasive imaging approaches that are being used to monitor the temporal and spatial migration of stem cells or immune cells as part of regenerative medicine. Transplantation of labeled stem cells or immune cells direct implantation, intra-arterial or intravenous injection has allowed for the tracking of these cells in various experimental models of inflammation, autoimmune and trauma furthering our understanding of the pathophysiology of diseases serving as a basis for translation to the clinic. Various in vitro techniques such as the introduction of reporter genes or exogenous agents or nanoparticles are being used to tag cells for optical/fluorescent imaging, PET, SPECT and MRI. Noninvasive imaging techniques are needed to determine cell viability, differentiation and function within the target tissue and also determine when, how often and the number of cells that would need to be given to stimulate repair or treat diseases. Future direction and goals for cellular imaging will be to provide valuable information in monitoring and guiding clinical trial using cell-based therapies and cell-based gene therapy in the treatment of diseases. Scaffolds are structural templates to engineer 3D tissues and organs, and also serve as a temporary artificial extracellular matrix to define the cellular microenvironment in regenerative medicine. This session will focus on novel material synthesis and scaffold fabrication technologies as well as degradation behavior, physical properties, biological activities and scaffold evaluation in regenerative medicine applications. Cell based approaches in regenerative medicine frequently rely on in vitro conditioning of cells to permit proliferation, differentiation, and organization of cells into tissue-like structures with functional properties approaching those of normal tissue.  During this period of conditioning, bioreactors can be used to exert external stimuli (e.g., mechanic strain, hydrodynamic pressure and shear, electrical fields) that facilitate matrix deposition and tissue organization. In this session, we seek abstracts that describe the development and testing of bioreactors for regeneration of a large range of tissues, including but not limited to bone, cartilage, tendon/ligament, skeletal muscle, cardiac muscle, blood vessels, and heart valves.  Both fundamental studies of bioreactor performance and cell/tissue development in vitro and translation studies of tissue efficacy in vivo are encouraged. Special emphasis will be placed on bioreactors designed to mimic the dynamic physical/mechanical stimuli that exist in vivo and approaches that employ multiple cell types. This session will address the immunological issues associated with regenerative medicine. It will include presentations of inflammatory responses to tissue engineered constructs and the role of inflammation in regeneration. As such, it will consider the beneficial role of inflammation in regeneration and strategies for controlling this. It will also consider adaptive immune responses in the context of regenerative medicine, with a particular emphasis on inducing tolerance and immune privilege. Topics will also include immune reconstitution and augmentation by engineering and the use of stem cells and engineered tissues to modify immunity.
2:30pmBreak with Poster Viewing
Session III 3:00 - 4:30pm REGENERATION BY ENDOGENOUS CELL HOMING FUNCTIONALIZATION OF CELLS AND BIOMATERIALS DIGITAL BIOFABRICATION DEVELOPMENT OF STANDARDS IN TISSUE ENGINEERING AND REGENERATIVE MEDICINE (PANEL)
Session Chairs Jeremy Mao and Stephen Badylak Edward Schwarz Wei Sun Kurt Kasper and Anthony Ratcliffe
Delivery of cells, including stem/progenitor cells, is currently a central tenet of tissue engineering and regenerative medicine. Despite its scientific merit, cell based therapy encounters several barriers in clinical translation. Immune rejection, pathogen transmission, potential tumorigenesis, packaging/storage/shipping, and anticipated difficulties in clinical adoption, cost reimbursement and regulatory approval are among some of the roadblocks. Economic viability of cell delivery, especially if it requires substantial ex vivo cell manipulation, is far from trivial. This symposium assembles recent data in the regeneration of multiple and, in some cases, complex tissues, such as dermal, muscle, dental, esophagus, cartilage and bone in vivo by the endogenous homing of host cells to the site of interest. Data from independent reports by multiple laboratories suggest an emerging concept that single or complex tissues can regenerate by the homing of endogenous cell lineages, including angiogenesis. A multitude of approaches will be discussed to orchestrate cell homing including active recruitment of host endogenous cells by chemokines, cytokines, drugs and/or polymeric materials. The symposium will further explore the potential and limitations of tissue regeneration by cell homing and contrast cell homing with cell delivery approaches. Information on the mechanisms of cell homing will be explored primarily by in vitro studies of cell migration, cell recruitment and cell motility in 2D and 3D models. Invited and selected presentations will focus on the central theme to delineate the potentials and challenges to harness the host's own cells, including stem/progenitor cells, for the regeneration of multiple tissues. This session will focus on in vitro research that aims to make advances towards instructing cells and biomaterials to become functional tissues in culture. These techniques involve the use of growth factors, genes and topologically defined matrices that stimulate the differentiation of stem and progenitor cells into functional tissues. The session will focus on the latest advances on digital biofabrication of 3D biological models, disease pathogenesis models, drug testing and discovery models, and regenerative tissue substitutes, with specific topics including 1) inkjet, extrusion, and laser-based cell and molecules printing, patterning, assembling, tissue and organ printing; 2) bio-additive manufacturing for tissue scaffolds, integrated bio/micro and bio/nano devices, biochips, and drug delivery vehicle; and 3) computer-aided biofabrication and computer-aided tissue engineering. The selected abstracts will be invited for full-length papers for journal Biofabrication. The development and consensus adaptation of standards in tissue engineering and regenerative medicine presents the potential to accelerate research and development productivity and to improve efficiency in the regulatory pathway toward clinical implementation of regenerative medicine technologies. Agreed-upon methodologies can be used, and the specific objectives of product developers and regulatory bodies can be aligned. This panel discussion will focus upon describing examples of standards being used effectively, and identifying the importance and potential role of standards in developing the future field of tissue engineering and regenerative medicine.
4:30pmExhibit Viewing/Happy Hour
5:00 - 6:30pmPoster Session I