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Karl J. Wahlin  
2521 Eastern Avenue karl@wahlin.org
Baltimore home.410-675-1127
MD lab.410-955-7001
21224  
research interest
To study molecular and cellular aspects of neurobiology with a particular focus on synapse formation and retinal connectivity.
 
work experience

Wilmer Eye Institute at the Johns Hopkins Hospital. Baltimore, MD June 1996-fall 2002

Title: Research Technician

 

Conducted novel in vivo and in vitro research aimed at studying the molecular mechanisms driving neurotrophic factor mediated photoreceptor survival in the mammalian retina. The findings of this work have direct clinical implications since they offer insight into the treatment of retinal dystrophies such as retinitis pigmentosa and macular degeneration. Additional molecular techniques were developed to study growth factor receptor responses at the single cell level. It is through the collection and isolation of single retinal cell types that I have been able to create cDNA pools that are actively being studied by candidate gene PCR and microarray analysis.

I have gained expertise in various laboratory techniques some of which include: Single cell microcapture, microdissections, Polymerase Chain Reaction (PCR), primer design, gene subcloning, recombinant plasmid construction, plasmid mini- and maxi-prep, DNA sequencing, synthesis of DNA and RNA probes, in situ hybridization, Northern hybridization, histological staining, immunohistochemistry using bright field and fluorescence microscopy, image analysis using Image Pro and SPOT RT software, genotyping of transgenic mouse lines, primary organ cultures, and intra-vitreal microinjections.

SUNY Research Foundation. Amherst, NY Jan.1994-Aug.1995

Title: Lab Technician / Research Assistant

 

My research in the Department of Biochemical Pharmacology at SUNY Buffalo focused on the role that retinoic acid plays in the differentiation of uncommitted stem cells into a pathway that commits them to neuronal phenotypes. Emphasis was placed upon expression of Protein Kinase C isotypes. Other responsibilities were to manage laboratory inventory, making reagents and solutions when necessary, and ordering.
Some of the techniques used were PCR, restriction analysis, ligation, electroporation, cDNA library synthesis via (RT) reverse transcription, plasmid contruction and miniprep, production of radiolabelled probes DNA, RNA, and protein extraction and isolation, spectrophotometry (UV/VIS), Lowry assay, microscopy, Northern and Western Hybridization, autoradiography, agarose and SDS-PAGE electrophoresis, routine cell culture, cell counting, preparation of media and reagents for general lab use, radiation wipe test surveys, autoclaving.

 
education
 
Johns Hopkins School of Medicine; Baltimore, MD 21280 September 2002 to present

Department of Neuroscience, PhD candidate

 
Johns Hopkins University; Baltimore, MD 21280 February 2000

Masters of Science in Biotechnology,

 
State University of New York at Buffalo; Amherst, NY 14227 February 1996

Double degree: Bachelors of Science in Biology and Biochemical Pharmacology

 
Duke University Marine Laboratory; Beaufort, N.C. 27708 Summer 1992

Course: Biochemistry of Marine Animals.

other skills
  • Advanced level SCUBA diver.
  • Adult CPR certification – American Red Cross
  • Basic Radiation Safety - SUNY Buffalo
  • Familiar with Macintosh, Windows & UNIX computer systems. Experience with web development usingFlash, Fireworks, Ultradev, and Photoshop software packages. Some experience programming in html, asp/javascript, css scripting languages. Familiar with MS Access, MySQL, and Filemaker Pro databases.
>publications


Wahlin KJ, Yu, N, Adler R. Expression of Synaptic Molecules in the Developing Chick retina. Manuscript in progress.

Pasterkamp RJ, Dai H, Terman JR, Wahlin KJ, Kim B, Bregman BS, Popovich PG, Kolodkin AL. MICAL Flavoprotein Monooxygenases: Expression in the Developing and Adult Rat Nervous System and Following Spinal Cord Injuries. Mol Cell Neurosci. 2005 Oct 13

Wahlin KJ, Lim L, Grice EA, Campochiaro PA, Zack DJ, Adler R. A method for analysis of gene expression in isolated mouse photoreceptor and Muller cells. 2004 Mol Vis 10:366-375.

Mori K, Gelbach P, Ando A, Wahlin KJ, Gunther V, McVey D, Wei L, Campochiaro PA. Intraocular Adenoviral vector- mediated gene transfer is increased in proliferative retinopathies. Invest Ophthalmol Vis Sci 2002.

Wahlin KJ, Campochiaro PA, Zack DJ, Adler R. Neurotrophic factors cause activation of intracellular signaling pathways in Muller cells and other cells of the inner retina, but not photoreceptors. Invest Ophthalmol Vis Sci. 2000 Mar;41(3):927-36.

Wahlin KJ, Adler R, Zack DJ, Campochiaro PA. Neurotrophic Factor Signaling in Normal and Degenerating Rodent Retinas. Exp Eye Research 2001 Nov;73(5):693-701.

Mathura JR Jr, Jafari N, Chang JT, Hackett SF, Wahlin KJ, Della NG, Okamoto N, Zack DJ, Campochiaro PA. Bone morphogenetic proteins-2 and -4: negative growth regulators in adult retinal pigmented epithelium. Invest Ophthalmol Vis Sci. 2000 Feb;41(2):592-600.

Hackett SF, Ozaki H, Strauss RW, Wahlin K, Suri C, Maisonpierre P, Yancopoulos G, Campochiaro PA. Angiopoietin 2 expression in the retina: upregulation during physiologic and pathologic neovascularization. J Cell Physiol. 2000 Sep;184(3):275-84. Review.

presentations
 

Analysis of the Site of Action of Neurotrophic Factors in Mouse Retina. Wahlin KJ. 9th Annual Wilmer Research Meeting, March, 1998

Intraocular Injection of Neurotrophic Factors Activate Signaling Pathways Within Cells of the inner Retina. Wahlin KJ. 10th Annual Wilmer Research Meeting, 1999

Analysis of Gene Expression in Isolated, Microcaptured Mouse Photoreceptor and M uller Cells. Wahlin KJ. 13th Annual Wilmer Research Meeting, 2002

references

Available upon request