Tharun Sundaresan


Department of Primary Appointment:
School of Medicine
Associate Professor
Location: Uniformed Services University of the Health Sciences, Bethesda, MD
Research Interests:
Mechanism of mRNA decay
Molecular basis of cancer
Office Phone


Ph.D. (Life Sciences) - Centre for Cellular and Molecular Biology (CCMB), Hyderabad, India (Affiliated to Jawaharlal Nehru University, New Delhi, India).

Career Highlights: Positions, Projects, Deployements, Awards and Additional Publications

Tharun, S and Parker, R. 1995. Mechanisms of mRNA Turnover in Eukaryotic Cells. In Modern Biology Series vol:17 (mRNA metabolism and post-transcriptional gene regulation), p181-199. Ed. Harford, J.B., and Morris, D.R. John Wiley Publishers.

Tharun, S and Parker, R. 1999. Turnover of mRNA in eukaryotic cells. In Comprehensive natural products chemistry vol:6 (Prebiotic chemistry, molecular fossils, nucleosides and RNA), p205-216. Ed. Barton, S.D and Nakanishi, K. Pergamon Publishers.

Tharun, S. 2009. Lsm1-7-Pat1 complex: A link between 3’ and 5’-ends in mRNA decay? RNA Biology, 6(3):228-232.

Tharun, S. 2009. Roles of eukaryotic Lsm proteins in the regulation of mRNA function. International Review of Cell & Molecular Biology, 272:149-189.

HHMI Fellowship

American Cancer Society IRG grant

NIH RO1 Research project grant

USUHS Exploratory grant

Faculty (secondary appointment), Molecular Cell Biology Graduate Program, Uniformed Services University of the Health Sciences.

Course Director, Graduate Biochemistry course, Uniformed Services University of the Health Sciences.

Representative Bibliography

Derksen, A, Shih, H-Y, Forget, D, Darbelli, L, Tran, LT, Poitras, C, Guerrero, K, Tharun, S, Alkuraya, FS, Kurdi, WI, Nguyen, C-TE, Laberge, A-M, Si, Y, Gauthier, M-S, Bonkowsky, JL, Coulombe, B and Bernard, G. 2021. Biallelic pathogenic variants in LSM7 impair assembly of LSM complexes, impair s neurodevelopment in zebrafish and may be associated with an ultra rare neurodevelopmental and neurodegenerative disorder. HGG (Human Genetics and Genomics) Advances, 2(3):100034

Chowdhury, A, Swathi Kalurupalle, S and Tharun, S*. 2016. Mutagenic analysis of the C-terminal domain of Lsm1. PLoS ONE, 11: e0158876. *Corresponding author

Jungfleisch, J., Chowdhury, A, Alves-Rodrigues, I, Tharun, S* and Juana Díez. 2015. The Lsm1-7-Pat1 complex promotes viral RNA translation and replication by 3 differential mechanisms. RNA, 21:1469–1479. *Corresponding author

Chowdhury, A, Kalurupalle, S, and Tharun, S*. 2014. Pat1 contributes to the RNA binding activity of the Lsm1-7-Pat1 complex. RNA, 20:1465–1475. *Corresponding author

Chowdhury, A, Raju, KK, Kalurupalle, S and Tharun, S*. 2012. Both Sm-domain and C-terminal extension of Lsm1 are important for the RNA-binding activity of the Lsm1–7–Pat1 complex. RNA, 18:936–944. *Corresponding author

Chowdhury, A, and Tharun, S*. 2009. Activation of decapping involves binding of the mRNA and facilitation of the post-binding steps by the Lsm1-7-Pat1 complex. RNA, 15:1837–1848. *Corresponding author

Tharun, S. 2008. Purification and analysis of the decapping activator Lsm1p-7p-Pat1p complex from yeast. Methods in Enzymology, 448:41-55.

Chowdhury, A, and Tharun, S*. 2008. lsm1 mutations impairing the ability of the Lsm1p-7p-Pat1p complex to preferentially bind to oligoadenylated RNA affect mRNA decay in vivo. RNA, 14:2149-2158. *Corresponding author

Chowdhury, A, Mukhopadhyay, J. and Tharun, S*. 2007. The decapping activator Lsm1p-7p-Pat1p complex has the intrinsic ability to distinguish between oligoadenylated and polyadenylated RNAs. RNA, 13:998-1016. *Corresponding author

Tharun S*, Muhlrad D, Chowdhury A and Parker R. 2005. Mutations in the Saccharomyces cerevisiae LSM1 gene that affect mRNA decapping and 3' end protection. Genetics, 170:33-46. *Corresponding author