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Session Overview

Saturday, October 23, 2010
8:00 AM–12:00 NOON Saturday AM Workshop
Advancements in Applied Genetic Toxicology
  This workshop will cover a broad range of topics that are currently of great interest to scientists within industry and regulatory agencies. Topic areas include the development of structure activity relationships for genotoxicity, advances in assessing genotoxicity in vitro, and new approaches to the assessment of genotoxicity in vivo.
9:30 AM–4:30 PM Career Development Workshop
 

Where Are The Jobs and How Can EMS Help Me Get Them? The market for Ph.D.’s in EMS-related fields has changed. Academic positions are more difficult to get. There are fewer positions in some of the traditional industries our membership has tended to populate. In spite of this, the value of our education and science background has never been more valuable. This workshop is designed to help students, postdocs, and early career scientists better navigate the new world.

The workshop will have a mixture of presentations and roundtable discussions with representative from both traditional and non-traditional career paths. By the end of this workshop you should:

  1. Have an overview of career possibilities for PhD’s in EMS-related fields.
  2. Know how to create an individual development plan.
  3. Have information on the nature of the work in different career fields.
  4. Be aware of the near- and long-term job prospects in these fields.
  5. Learn of resources available to find jobs.
  6. Develop contacts with people in each of the fields.
  7. Learn of open postdoctoral and other positions where your expertise would be of value.
12:30 PM–5:00 PM Saturday PM Workshop
Genotoxicity of Nanomaterials: Refining Strategies and Tests for Hazard Identification
  Nanomaterials toxicology is a subject of increasing interest and regulatory concern. Several studies have indicated that nanomaterials test positive in some genotoxicity assays, particularly the in vitro comet assay. It is generally agreed that the physical and surface properties of nanomaterials are relevant to their biological activity and this aspect has received considerable attention. However, the present workshop will focus on strategies and relevant systems for testing of nanomaterials as potential genotoxic hazards. Are the current standard genotoxicity assays appropriate for evaluating carcinogenic potential of nanoparticles? If not, what is needed? The ultimate goal of this forum would be to design a genotoxicity testing strategy for nano-sized materials, or to identify appropriate research or validation studies that would assist in developing such a strategy.

The workshop will begin with summaries of current knowledge and relevant issues related to the assessment of nano-sized materials. Break-out sessions in this workshop will critique the standard in vitro and in vivo genotoxicity assays in terms of their relevance and appropriateness for testing of nano-sized materials. A third break-out session will have the opportunity to integrate new assays and new technologies into a de novo strategy or test battery.

In order to facilitate progress in meeting workshop goals, it is anticipated that discussions of the workshop topics will begin in advance of the meeting, via e-mail to registered participants. You may register for the full workshop which will be held at the Omni Fort Worth Hotel OR you may register to view the workshop live from your computer.

 

Sunday, October 24, 2010
9:45 AM–12:15 PM Symposium 1
Replication Stress: Environmental Causes, Cellular Responses, and Mutational Consequences
  Structural variation in the human genome contributes to birth defects from the germline and diseases such as cancer originating in somatic cells. Recent evidence supports the view that “replication stress” (ie. Interference with replication fork progression) is a major contributing factor, and studies have been designed to understand the cellular responses that promote replication fork stabilization. Particular problems of concern include the unavoidable collisions between replication and transcription, as these transactions must share the same DNA template. This symposium will focus on environmental causes of replication stress, mechanisms that resist catastrophic events at the replication fork, and the consequences when the resistance pathways are overwhelmed or otherwise insufficient.
9:45 AM–12:15 PM Symposium 2
Is Tobacco Smoke a Germ-Cell Mutagen?
  Heritable mutations are changes in DNA sequence arising in parents that are passed on to their offspring. Heritable mutations are critically important to public health as they result in an increased burden of genetic disease (e.g., cancer) in subsequent generations. Recent research on animal models and in humans has revealed that paternal exposure to cigarette smoke results in decreases in sperm function (e.g., sperm count and motility), and damage to sperm DNA and chromosomes. Work in human populations has found an increased level of cancer in the descendents of smoking males. This symposium will address the questions surrounding this important issue and include a presentation of the scientific evidence (animal models, human models and epidemiological models) leading towards the recent ground-breaking decision by the International Agency for Research on Cancer (IARC) that exposure to cigarette smoke causes cancer in their descendents. A participant from the IARC panel will lead the audience through the decision-making process that led the IARC to come to this recommendation. Three or four symposium presentations from experts in this field will precede a debate centered around the decision and the best way forward.
2:15 PM–4:30 PM Symposium 3
DNA Interstrand Crosslinks: Repair, Cell Signaling, and Therapeutic Implications
  DNA interstrand crosslinks (ICLs) are among the most cytotoxic types of DNA damage, and thus ICL-inducing agents such as cyclophosphamide, melphalan, cisplatin, psoralen and mitomycin C have been used clinically as anti-cancer drugs for decades. ICL-inducing agents continue to be among the most effective chemotherapeutic treatments for many cancers; however, treatment with these agents can lead to secondary malignancies, in part due to mutagenic processing of the DNA lesions. ICLs can also be formed endogenously as a consequence of cellular metabolic processes. The mechanisms of ICL repair are well characterized in bacteria and yeast, but the mechanisms of their processing in mammalian cells are not clear. Thus, a better understanding the molecular mechanisms of ICL processing offers the potential to improve the efficacy of these drugs in cancer therapy. In mammalian cells it is thought that ICLs are repaired by the coordination of proteins from several repair pathways, including nucleotide excision repair (NER), base excision repair (BER), mismatch repair (MMR), homologous recombination (HR), Fanconi anemia (FA), and translesion synthesis (TLS). In this session, we will discuss the role of these proteins/pathways in the repair of and response to ICLs in human cells and in mice. We will also discuss a unique approach to direct site-specific ICLs in the mammalian genome, using triplex technology.
2:15 PM–4:30 PM Symposium 4
Telomeres, Aging, and Human Disease
2:15 PM–4:30 PM Symposium 5
Next Generation Sequencing Technology and Applications/Molecular Analyses
 

New technology is now allowing us to understand our complete genetic make-up and make personalized medicine a reality.  Talks will address what can be learned about our future health based on knowledge of our personal genome, how this knowledge can be used to fight diseases such as cancer, and the latest genome sequencing technologies that will bring costs down.

 

Monday, October 25, 2010
9:45 AM–12:15 PM  Symposium 6
RNA Silencing: Mechanism, Biology and R\esponses to Environmental Stress
 

Small non-coding RNAs (sRNAs) are the regulatory molecules involved in the processes of normal cell growth and differentiation as well as in response to environmental stress. This symposium will describe the role of small RNAs in signalling in response to and protection against stresses such as ionizing radiation, chemicals, pathogens exposure as well as the process of cancer.

9:45 AM–12:15 PM Symposium 7
Cognitive Consequences of Fetal and Early Postnatal Exposure to Environmental Contaminants
 

This symposium will focus on exposures of pregnant women and young children to sources of environmental contamination that include phthalates, polycyclic aromatic hydrocarbons, and pesticides.  All of these exposures have been reported to impact cognitive function and/or intellectual capacity in children.  This important scientific question, is currently surrounded by some controversy, however the data suggest the need for regulatory action if connections can be validated.  We have invited folks who have recent data that elucidates this issue with the intention of generating critical discussion that will allow members of the participating audience to reach an informed conclusion. 

2:15 PM–4:30 PM Symposium 8
Mitochondria Mutagenesis and Disease
 

The ultimate goal of this forum is to design a genotoxicity testing strategy for nano-sized materials, including standard assays and/or new technologies. If current knowledge is not sufficient, we will seek to identify appropriate research or validation studies that would assist in developing such a strategy.

Nanomaterials toxicology is a subject of increasing interest and regulatory concern. Several studies have indicated that nano-sized materials test positive in some genotoxicity assays, particularly in non-standard assays such as the in vitro comet assay. It is generally agreed that the physical and surface properties of nanomaterials are relevant to their biological activity and this aspect has received considerable attention. However, the present workshop will focus on strategies and relevant systems for testing of nanomaterials as potential genotoxic hazards. Are the current standard genotoxicity assays appropriate for evaluating the carcinogenic potential of nanoparticles? If not, what is needed?

The workshop will begin with summaries of current knowledge and relevant issues related to the assessment of nano-sized materials. Break-out sessions will critique the standard in vitro (Group 1) and in vivo (Group 2) genotoxicity assays in terms of their relevance and appropriateness for testing of nano-sized materials. A third break-out session will investigate the suitability of non-standard assays and new technologies and whether they could be integrated into a de novo test battery or a strategic approach. After the breakout sessions we will re-join for summaries and then work to develop consensus on aspects of a genotoxicity testing strategy for nanomaterials.

In order to facilitate progress in meeting workshop goals, it is anticipated that discussions of the workshop topics will begin in advance of the meeting, via e-mail or chat room involving registered participants.

2:15 PM–4:30 PM Symposium 9
Advances and Use of Toxicogenomics in Risk Assessment

 

Tuesday, October 26, 2010
9:45 AM–12:15 PM Symposium 10
Inflammation: From Molecules to Human Populations
9:45 AM–12:15 PM Symposium 11
Biomarkers of Exposure
 

With recent advances in genomic and bioanalytical techniques, it is now possible to investigate thousands of genes and proteins and their various expression levels and states of epigenetic and postranslational modifications. Such analysis can be done over a wide range of experimental and clinical conditions in order to identify biomarkers of radiation and toxicant exposure, early onset of disease and for predictive and prognostic markers of patient response to therapy. This approach commonly requires high-dimensional data sets consisting of differential profiles in order to identify and validate signatures. Novel assays and devices are in development for biothreat agents, emerging diseases and for point of care clinical applications. Unfortunately, very few of the current and developing assays have been rigorously validated due to the costs and limitations associated with clinical trial design and execution. In the future, development of in vivo model systems will be a crucial step for validating both the biology and the instrumentation. This symposium will focus on describing the process for identifying and validating biomarkers in cells, tissues and whole organisms and incorporation of these markers into state-of-the-art assays and devices.

12:30 PM–2:00 PM WEMS Luncheon
The Leaky Pipeline of Women in Science: Patching the Pipe or Rebuilding the Infrastructure?
 

Dr. Carrie Wolinetz, Director of Scientific Affairs and Public Relations, FASEB, will be speaking on “The Leaky Pipeline of Women in Science: Patching the Pipe or Rebuilding the Infrastructure?” She will be discussing the ongoing gender disparities in science and what can be done to solve the problem.

2:15 PM–4:15 PM Symposium 12
DNA Repair, Epigenetics and Genomic Stability
4:30 PM–5:45 PM Symposium 13
Cytogenetics and EMS: The Shelly Wolff Legacy
 

We often talk about the impact of our members work on science and society. The work of Sheldon Wolff, a former president of EMS, provides a good example of the enduring impact of our membership. In this symposium, we will highlight Shelly’s most important contributions to science and illustrate how they underlie some of the most spectacular research being published today. In addition, we will address Shelly’s mentoring skills and how they have impacted EMS.

 

Wednesday, October 27, 2010
9:45 AM–12:15 PM Symposium 14
Fragile-X Syndrome: Genes to Therapy
 

Fragile-X syndrome is the most common inherited cause of mental impairment and the most common known cause of autism. The X-linked nature of the disease was described by Martin and Bell in 1943, the increase in chromosome breakage on the X-chromosome (fragile-site) of lymphocytes cultured from patients with the syndrome was recognized in the 1970s and 1980s, and the FMR1 gene was identified in 1991. The syndrome results from the expansion of triplet repeats which can lead to the silencing of the X-linked FMR1 gene. In this symposium, experts will discuss and present current knowledge of the DNA repair defect associated with fragile-X, the molecular nature of the pre-mutation and full mutation forms of fragile-X syndrome and the accompanying clinical symptoms, a clinical approach for the treatment of the syndrome, a translational approach for effective drug design in the treatment of fragile-X syndrome, and a transgenic mouse model which is providing data on the expression of the FMR1 protein in fragile-X syndrome. This symposium presents not only an excellent overview of our current understanding of fragile-X syndrome, but also serves as a model for the application of basic research findings in DNA repair and epigenetics to disease intervention and therapy.

9:45 AM – 12:15 PM Symposium 15
Genetic Toxicology of Wildlife and Other Indicator Species
 

This symposium will discuss environmental contaminant exposure and its effects on the DNA of wildlife and laboratory animals exposed to ambient environmental conditions. We will be trying to understand how exposure and DNA damage may impact natural populations, as well as use this information to predict possible health effects for humans. This symposium will be of interest to agencies with an environmental or conservation focus, as well as those interested in the relationship between environment and human health.