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Ian M. Dickerson, Ph.D.

Contact Information

Phone Numbers

Office: (585) 273-1040

Biography

RESEARCH:

Signal Transduction at Neuropeptide Receptors

Our laboratory studies the neuropeptide calcitonin gene-related peptide (CGRP). Originally discovered as an alternatively-spliced variant of the calcitonin mRNA, CGRP is one of the most potent vasodilators known. As a vasodilator, CGRP has both peripheral and central effects. One of the most notable effects of CGRP is its causative effect of migraine on the cerebral vasculature, and stable synthetic antagonists have been recently developed and are in Stage III clinical trials for migraine treatment. CGRP also suppresses immune function, is involved in pain perception, and has further central role in the development of tolerance to opiates.
Recently, we have discovered that CGRP is a potent stimulator of glioma and metastatic breast cancer tumor cell growth. In collaboration with Dr. Edward Brown (Biomedical Engineering) we have observed remarkable increases in tumor cell growth rates in response to CGRP incubation. These data suggest that the CGRP receptor system represents an important new target for these types of cancer for which therapy is currently limited.
The CGRP receptor is unique for G protein-coupled receptors (GPCR) in that it requires three proteins for function: calcitonin-like receptor (CLR), a stereotypical GPCR with 7 hydrophobic transmembrane domains; receptor activity modifying protein (RAMP1), a single transmembrane accessory protein that targets CLR to the cell surface and confers pharmacologic specificity, and CGRP receptor component protein (RCP) which couples the CLR/RAMP1 complex to the cellular signaling pathway.
Our laboratory is investigating the mechanism of RCP action by: (1) determining the molecular/ biochemical requirements for RCP function, (2) determining the proteins that interact with RCP in a functional receptor complex using proteomic strategies, (3) determining the role of RCP and CGRP in vivo, using targeted homologous recombination to generate transgenic RCP knockout mice.
In addition, we are applying the biochemical reagents made in the first three areas of interest to directly test the role of the CGRP receptor in glioma and breast cancer proliferation, with the long-term goal of identifying novel protein interactions required for CGRP receptor function as targets for future anti-cancer drug development.

Professional Background

EDUCATION:

Humboldt State University, Arcata, CA, 1980 BA Biology
Purdue University, West Lafayette, IN, 1985 PhD Molecular Biology
The Johns Hopkins School of Medicine, Baltimore, MD, 1989 Post Doc Neuroscience


POSITIONS:

1989-1997: Assistant Professor, University of Miami School of Medicine, Department of Physiology and Biophysics
1997-2003: Assoc. Professor, University of Miami School of Medicine, Department of Physiology and Biophysics
1990-2003: Faculty Member, Neuroscience Program, University of Miami School of Medicine
1991-2003: Secondary Appointment, Department of Biochemistry and Molecular Biology, University of Miami School of Medicine
2000-2003: Member, University of Miami School of Medicine Cancer Center, Tumor Cell Biology Program
2003-present: Associate Professor, University of Rochester School of Medicine, Department of Neurobiology and Anatomy
2003-present: Secondary Appointment, University of Rochester School of Medicine, Department of Physiology and Pharmacology

HONORS:

1987-1989 NIH NRSA Individual Postdoctoral Fellowship Award
1994-1995 Stanley Glaser Research Award, University of Miami School of Medicine
1996 UM Dean's Award for Excellence in Research and Creativity; Outstanding Graduate Mentor

Research

RESEARCH:

Signal Transduction at Neuropeptide Receptors:

Our laboratory studies the neuropeptide calcitonin gene-related peptide (CGRP). Originally discovered as an alternatively-spliced variant of the calcitonin mRNA, CGRP is one of the most potent vasodilators known. As a vasodilator, CGRP has both peripheral and central effects. One of the most notable effects of CGRP is its causative effect of migraine on the cerebral vasculature, and stable synthetic antagonists have been recently developed and are in Stage III clinical trials for migraine treatment. CGRP also suppresses immune function, is involved in pain perception, and has further central role in the development of tolerance to opiates.
Recently, we have discovered that CGRP is a potent stimulator of glioma and metastatic breast cancer tumor cell growth. In collaboration with Dr. Edward Brown (Biomedical Engineering) we have observed remarkable increases in tumor cell growth rates in response to CGRP incubation. These data suggest that the CGRP receptor system represents an important new target for these types of cancer for which therapy is currently limited.
The CGRP receptor is unique for G protein-coupled receptors (GPCR) in that it requires three proteins for function: calcitonin-like receptor (CLR), a stereotypical GPCR with 7 hydrophobic transmembrane domains; receptor activity modifying protein (RAMP1), a single transmembrane accessory protein that targets CLR to the cell surface and confers pharmacologic specificity, and CGRP receptor component protein (RCP) which couples the CLR/RAMP1 complex to the cellular signaling pathway.
Our laboratory is investigating the mechanism of RCP action by: (1) determining the molecular/ biochemical requirements for RCP function, (2) determining the proteins that interact with RCP in a functional receptor complex using proteomic strategies, (3) determining the role of RCP and CGRP in vivo, using targeted homologous recombination to generate transgenic RCP knockout mice.
In addition, we are applying the biochemical reagents made in the first three areas of interest to directly test the role of the CGRP receptor in glioma and breast cancer proliferation, with the long-term goal of identifying novel protein interactions required for CGRP receptor function as targets for future anti-cancer drug development.

RECENT PUBLICATIONS:

Ma W, Chabot JG, Powell KJ, Jhamandas K, Dickerson IM, Quirion R. (2003) "Localization and modulation of calcitonin gene-related peptide-receptor component protein-immunoreactive cells in the rat central and peripheral nervous systems." Neuroscience. 120(3):677-94.
Lai, Y.C., Shaftel, S.S,, Miller, J.N., Tallents, R.H., Pinkert, C.A., Olschowka, J.A., Dickerson, I.M., Puzas, J. E., O'Banion, M. K., Kyrkanides, S. (2006). "Intraarticular induction of interleukin-1beta expression in the adult mouse, with resultant temporomandibular joint pathologic changes, dysfunction, and pain" Arthritis Rheum. 54:1184-1197.
Zhang, Z., Dickerson, I.M., Russo, A.F. (2006) "CGRP Receptor Activation by RAMP1 Gene Transfer to Vascular Smooth Muscle Cells" Endocrinol. 147(4):1932-40.
Tolun, A.A., Dickerson, I.M., Malhotra, A. (2006). "Overexpression and purification of human calcitonin gene-related peptide-receptor component protein in Escherichia coli". Protein Expr Purif. 52:167-174.
Glaser, S., Ueno, Y., DeMorrow, S., Chiasson, V., Katki, K., Venter, J., Francis, H., Dickerson, I.M., DiPette, D., Supowit, S., Alpini, G. (2007) "Knockout of Alpha Calcitonin Gene-Related Peptide Prevents Cholangiocyte Proliferation Induced by Extrahepatic Bile Duct Obstruction" Lab. Invest;87(9):914-26.
Morara S, Wang LP, Filippov V, Dickerson IM, Grohovaz F, Provini L, Kettenmann H. (2008). "Calcitonin gene-related peptide (CGRP) triggers Ca2+ responses in cultured astrocytes and in Bergmann glial cells from cerebellar slices" Eur J Neurosci. 28:2213-20.

Credentials

Faculty Appointments

Education

1980
BA | Humboldt State Univ
Biology

1985
PhD | Purdue University
Molecular Biology

Awards

1996
Dean's Award for Excellence in Research and Creativity; Outstanding Graduate Mentor
Location: University of Miami

1994
Stanley Glaser Research Award
Sponsor: University of Miami

1987 - 1989
NIH NRSA Individual Postdoctoral Fellowship Award

1983 - 1985
David Ross Graduate Research Fellowship
Sponsor: Purdue University

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Publications

Journal Articles

7/2016
Dickerson IM, Bussey-Gaborski R, Holt JC, Jordan PM, Luebke AE. "Maturation of suprathreshold auditory nerve activity involves cochlear CGRP-receptor complex formation." Physiological reports.. 2016 Jul 0; 4(14)

6/2016
Golshadi M, Wright LK, Dickerson IM, Schrlau MG. "High-Efficiency Gene Transfection of Cells through Carbon Nanotube Arrays." Small.. 2016 Jun 0; 12(22):3014-20. Epub 2016 Apr 05.

9/4/2014
Bawa Z, Routledge SJ, Jamshad M, Clare M, Sarkar D, Dickerson I, Ganzlin M, Poyner DR, Bill RM. "Functional recombinant protein is present in the pre-induction phases of Pichia pastoris cultures when grown in bioreactors, but not shake-flasks." Microbial cell factories. 2014 Sep 4; 13(1):127. Epub 2014 Sep 04.

Books & Chapters

2010
Chapter Title: "The CGRP Receptor Component Protein: A Regulataor for CLR Signaling"
Book Title: "The Calcitonin Gene-related Peptide Family: Form, Function & Future Perspective
Author List: Dickerson, I.M.
Edited By: D.L. Hay and I.M. Dickerson
Published By: Springer Science2010 in New York

2009
Chapter Title: "The CGRP Receptor Component Protein (RCP): A Regulator for CLR Signaling",
Book Title: The Calcitonin Gene-Related Peptide Family; Form, Function And Future Perspectiv
Author List: Dickerson, I.M.
Edited By: I.M. Dickerson and D.L. Hay
Published By: Springer2009

2006
Chapter Title: "CGRP: A Multifunctional Neuropeptide"
Book Title: Handbook of Neurochemistry and Molecular Neurobiology
Author List: Russo, A.F.; Dickerson, I.M.
Edited By: R. Lim
Published By: Kluwer Academic/Plenum2006

VIEW ALL PUBLICATIONS