Neuromuscular Biology & Disease Group"It makes all the difference whether you look at someoneas a risen ape or a fallen angel." ----Tom Burnam |
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Jeffrey Boone Miller Senior Scientist at Boston Biomedical Research Institute Associate Professor of Neurology
at Harvard Medical School
Tutor in Biochemical Sciences at Harvard University B.S. Washington State University Ph.D. University of
California at Berkeley
Group Members.
Email:miller@bbri.org
Maggie Ardelt, B.A. No positions are available at this time.
Apoptosis may play a role during muscle injury repair, the
progression of pathology during muscle disease, and the loss of muscle mass
with aging. In one series of experiments, we're examining the functions of
cell death regulators, particularly those of the Bcl-2 family, in skeletal
muscle. We use knock-out and transgenic assays, as well as disease models,
to examine these issues. Our current and published work suggests that
the Bcl-2 family members play an important role in the formation and growth
of particular types of muscle cells (Dominov et al., 1998, 2001), and that inhibition of apoptosis can ameliorate pathology in laminin-alpha2-deficiency (Girgenrath et al., 2004; Dominov et al., 2005). Our goal is to develop a pharmaceutical treatment based on this knowledge.
2. Stem cells
in adult skeletal muscle.
Recent work has shown that skeletal muscles contain a small
number of multipotent stem cells whose progeny can make not only muscle
but also other cell types such as blood and bone. We have proposed that
Bcl-2 expression is a characteristic of these cells (e.g., Dominov et al.,
1998); and the cell surface antigens Sca-1 and CD45 identify additional subsets
(see Fig. 1.) (Girgenrath et al., 2005). We are currently developing
methods to purify these adult stem cells and to test their multipotentiality
with in vitro and in vivo assays. A long-term goal is determine
the signals that control the growth and differentiation of these stem cells
and to determine how they function in normal, injured, aging, and diseased
muscle.
3. Developmental
toxicology: Microarray analyses.
A number of environmental contaminants, such as PCBs and
particular pesticides, appear to cause long-term behavioral deficits in
animals and humans that have been exposed in utero. A promising approach
to understanding how these toxicants influence their targets is to use DNA
microarrays to identify toxicant-regulated genes. In collaboration with
teams of scientists, headed by Dr. Peter Spencer, at the Center for Occupational
and Environmental Toxicology at the Oregon Health & Science University
(www.ohsu.edu/croet), we are using microarray technology to test hypotheses
about how toxicants alter gene expression and function in embryonic and fetal
neurons. (to top of page)
Our work
is supported by:
Muscular
Dystrophy Association (www.mdausa.org)
National
Heart, Lung, & Blood Institute (www.nhlbi.nih.gov)
National Institute of Arthritis & Musculoskeletal & Skin Diseases (www.niams.nih.gov) National
Institute of Environmental Health Sciences (www.niehs.nih.gov)
U.
S. Department of Agriculture (www.reeusda.gov/nri) (to top of page)
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