Lesilee S. Rose

image of Lesilee S. Rose



Molecular & Cellular Biology

Offices and Labs

3165 Life Sciences Addition
(530 754-9884
3123 Life Sciences
(530) 754-9891


1991 PhD Molecular Biology Princeton University
1986 BS Biology College of William and Mary

Research Interests

Developmental and cell biology of C. elegans, with an emphasis on the control of cell division patterns and polarity.

The main focus of the lab's research is to understand how the orientation of cell division is controlled. In animal cells, the division furrow typically bisects the mitotic spindle. Thus, the cell division plane is determined by the position of the mitotic spindle. Proper division orientation is essential for a number of developmental and homeostatic processes. These include intrinsically specified asymmetric divisions in which a cell divides to produce daughters with different fates at birth. During such divisions the parent cell is polarized for particular cortical or cytoplasmic components; the spindle must align with this axis for division to result in the differential segregation of such components to the daughter cells, which gives them different developmental fates. During extrinsically asymmetric divisions, although the parent cell is not polarized the spindle/division orientation places daughters in different positions and thus different environments, which results in different fates. Both types of asymmetric division are important for generating cell diversity during development, as well as for the ability of adult stem cells to produce a self-renewing stem cell and a daughter that differentiates; asymmetric division also affects the proliferative capacity of some cell types and defects in spindle positioning have been implicated in cancer. We utilize the model system C. elegans for the majority of our studies, and employ a variety of genetic, molecular and cell biological techniques.


Basil O'Connor Starter Scholar Research Award

Department and Center Affiliations

Department of Molecular and Cellular Biology


Society for Developmental Biology
Genetics Society of America
American Society for Cell Biology

CBS Grad Group Affiliations

Biochemistry, Molecular, Cellular and Developmental Biology
Integrated Genetics and Genomics

Specialties / Focus

Biochemistry, Molecular, Cellular and Developmental Biology
  • Cell Division and the Cytoskeleton
  • Molecular Genetics
  • Cell Biology
  • Developmental Biology
  • Signal Transduction
Integrated Genetics and Genomics
  • Developmental Genetics
  • Model Organism Genetics


Life Sciences Addition 3235/39 website
  • Kari Price, Gosia Liro- Graduate Students; Jocelyn Alvarado, Nancy Lee, Kathie Kathie Paniagua-Urrutia, Hoang Tran - Undergraduate students

Teaching Interests

Developmental biology. Genetics.


1/17/2018 8:11:50 PM
  • Price, Kari L. and Lesilee S. Rose. 2017. LET-99 functions in the astral furrowing pathway, where it is required for myosin enrichment in the contractile ring. Mol Biol Cell. 28:2360-2373

  •  Małgorzata J. Liro and Lesilee S. Rose. 2016.  Mitotic Spindle Positioning in the EMS Cell of Caenorhabditis elegans Requires LET-99 and LIN-5/NuMA. Genetics 204: 1177-1189.

  • Wu, Jui-Ching, Espiritu EB and Lesilee S. Rose. 2016. The 14-3-3 protein PAR-5 regulates the asymmetric localization of the LET-99 spindle positioning protein. Devel. biology. 2016; 412(2):288-97.

  • Michael J.W. VanGompel, K.C.Q Nguyen, David H. Hall, William T. Dauer, and Lesilee S. Rose. A novel function for the C. elegans Torsin OOC-5 in nucleoporin localization and nuclear import. Mol Biol Cell. 2015 26(9):1752-63. This paper was highlighted in the ASCB Newsletter and on the Dystonia Research Foundation website

  • Polarity establishment, asymmetric division and segregation of fate determinants in early C. elegans embryos. In WormBook, ed.The C. elegans Research Community, WormBook, http://www.wormbook.org.

  • Eugenel B. Espiritu and Lesilee S Rose. 2013. Caenorhabditis elegans Embryo: Establishment of Asymmetry. In: eLS 2013, John Wiley & Sons Ltd: Chichester http://www.els.net/ [DO10.1002/9780470015902.a0001506.pub3]

  • Eugenel B. Espiritu, Lori E. Krueger, Anna Ye and Lesilee S. Rose, 2012. CLASPs function redundantly to regulate microtubule length in the C. elegans embryo. Dev Biol. 368, 242-54.
  • Krueger Lori E, Wu Jui-ching, Tsou Meng-Fu Bryan, Rose Lesilee S 2010. LET-99 inhibits lateral posterior pulling forces during asymmetric spindle elongation in C. elegans embryos.J Cell Biol 189(3):481-95
  • Wei Li, Leah DeBella, Tugba Guven-Ozkan, Rueyling Lin and Lesilee Rose. 2009. An eIF4E-binding protein regulates katanin protein levels in C. elegans embryos. J Cell Bio 187, 33-42
  • Park, Dae Hwi and Lesilee S. Rose. Dynamic localization of LIN-5 and GPR-1/2 to cortical force generation domains during spindle positioning. Dev Biol 315, 42-54
  • Wu, Jui-Ching, and Lesilee S. Rose. 2007. PAR-3 and PAR-1 inhibit LET-99 localization to generate a cortical band important for spindle positioning in C. elegans embryos. 2007. Mol Biol Cell. 18:4470-82
  • DeBella, Leah R., Adam Hayashi, and Lesilee S. Rose. 2006. LET-711, the C. elegans NOT1 ortholog, is required for spindle positioning and regulation of microtubule length in embryos. Mol. Biol. Cell 17:4911-4924
  • Gonczy, Pierre, and Lesilee S. Rose. 2005. Asymmetric cell division and axis formation in the embryo. In WormBook, ed.The C. elegans Research Community, WormBook, doi/10.1895/wormbook.1.7.1, http://www.wormbook.org.
  • Meng-Fu Bryan Tsou, Wei Ku, Adam Hayashi, and Lesilee S. Rose. 2003. PAR-dependent and geometry-dependent mechanisms of spindle positioning. J Cell Bio1: 160(6):845-55.
  • Meng-Fu Bryan Tsou, Adam Hayashi, and Lesilee S. Rose. 2003. LET-99 opposes Ga/GPR signaling to generate asymmetry for spindle positioning in response to PAR and MES-1/SRC-1 signaling. Development 130: 5717-30.
  • Tsou M-F, A Hayashi, LR. DeBella, G McGrath, and LS Rose. 2002. LET-99 determines spindle position and is asymmetrically enriched in response to PAR polarity cues in C. elegans embryos. Development. 129(19):4469-4481
  • Basham, SE and LS Rose. 2001. The Caenorhabditis elegans polarity gene ooc-5 encodes a Torsin-related protein of the AAA ATPase superfamily. Development. 128(22):4645-4656