Baylor University
Department of Biology
College of Arts and Sciences

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Cheolho Sim

Faculty - Cheolho Sim

Assistant Professor of Biology

A.119 Baylor Sciences Building

(254) 710-2087

Cheolho_Sim@baylor.edu

Assistant Professor of Biology

Education:
BS, MS - Korea University, Korea
PhD - University of Notre Dame, IN
Postdoctoral - Ohio State University, OH

Major area of research:

Vector Biology of Human Pathogens

Courses currently teaching:
BIO 5300: Invertebrate Genomics: Disease Transmission

Research Interests

The two broad areas of work in our laboratory are (1) functional genomics studies of arthropod vectors of human pathogens and (2) diapause research on west nile virus vector, especially the mosquito Culex pipiens, which is the primary vector for West Nile encephalitis, Eastern equine encephalitis, and many arboviruses, as well as lymphatic filariases. In particular, filarial nematodes have been infected over 120 million, over 40 million of them are seriously disfigured by the disease. One-third of the people infected with the disease live in India, one third are in Africa and most of the remainder is in South Asia, the Pacific and the Americas.

One of conspicuous void in our understanding of vector biology is how mosquitoes and other disease vectors regulate their seasonal development. Within the temperate zones, mosquitoes limited temporally to just a few months of active development. The remaining months are spent in a dormancy period known as diapause. Thus we are interested in determining the molecular mechanisms by which gene products exert this alternative developmental pathway. An applied aspect of this work is the potential utilization of this phenotype to discover novel developmental and metabolic inhibitors of arthropod vectors of human pathogens.Cheolho Sim - graphic

Publications:

Kim, M., Sim, C., Denlinger, DL. 2010. RNA interference directed against ribosomal protein S3a suggesta a link between thisgene and arrted ovarian development during adult diapause in Culex pipiens. Insect Molecular Biology, 19(1): 27-33.

Sim, C., Denlinger, DL.2009. Transcription profiling and regulation of fat metabolism genes in diapausing adults of WEst Nile Vector, Culex pipiens. Physiological Genomics, 39: 202-209.

Sim, C. and Denlinger, DL. 2009. A shut-down in expression of an insulin-like peptide, ILP-1, halts ovarian maturation during the overwintering diapause of hte mosquito Culex pipiens. Insect Molecular Biology, 18: 325-32.

Sim, C. and Denlinger, DL. 2008. Insulin signaling nad FOXO regulate the overwintering diapause of hte mosquito Culex pipiens. Proc Natl Acad Sci U.S.A., 105: 6777-6781.

Kang, S., Sim, C., Byrd, B., Collins, FH., and Hong, YS. 2008. Ex vivo promoter analysis of antiviral heat shock cognate 70B gene in Anopheles gambiae.Virology Journal, 5: 136.

Sim, C., Hong, YS., Tsetsarkin KA., Vanlandingham DL., Higgs ., Collins FH. 2007. Anopheles gambiae heat shock protein cognate 70B impedes o'nyong-nyong virus replication. BMC Genomics, 8:231.


Department of Biology