Tissue Specific Expression Table
Name |
Function |
Tissue specific expression |
Citation |
piwi-1 |
Protein that promotes stem cell maintenance and differentiation. |
stem cells (neoblasts) |
Reddien et al., 2005 |
pc2 |
Enzyme whose activity is the proteolytic processing of prohormones to mature neuropeptides. |
nervous system |
Collins et al., 2010 |
opsin-like |
Light-sensitive proteins with the ability to convert photons (light) into electrochemical signal. |
eyes |
Sánchez Alvarado and Newmark, 1999 |
porcupine-like |
Protein involved in the pathway of lipid metabolism. |
gut branches |
Gurley et al., 2008 |
laminin-like |
Fibrous protein present in the basement membrane of epithelia. |
pharynx |
Cebrià and Newmark, 2007 |
innexin |
Transmembrane protein involved in the formation of channels permeable to ions and small molecules. |
Protonephridia (kidney) |
Oviedo and Levin, 2007 |
collagen |
Elongated fibrils mostly found in fibrous tissues, such as muscle tissue. |
muscle |
Witchley et al., 2013 |
ifb |
Intermediate filament protein B, a cytoplasmic molecule involved in mechanical strength and structure attachment in epidermal cells. |
D/V edge |
Molina et al., 2011 |
slit |
Secreted midline protein with repulsive activity that prevents some cells to cross the body plan midline. |
midline |
Cebrià et al., 2007 |
sfrp-1 |
Secreted frizzled-related protein and modulator of wnt signaling. |
anterior end |
Gurley et al., 2008 |
frizzled-like |
Wnt receptor involved in the maintenance of posterior tissues. |
posterior end |
Gurley et al., 2008 |
References
Cebrià, F., Guo, T., Jopek, J. & Newmark, P.A. (2007). Regeneration and maintenance of the planarian midline is regulated by a slit orthologue. Developmental Biology, 307, 394-406.
Cebrià, F. & Newmark, P.A. (2007). Morphogenesis defects are associated with abnormal nervous system regeneration following roboA RNAi in planarians. Development, 134, 833-837.
Collins, J.J. 3rd, Hou, X., Romanova, E.V., Lambrus, B.G., Miller, C.M., Saberi, A., Sweedler, J.V. & Newmark, P.A. (2010). Genome-wide analyses reveal a role for peptide hormones in planarian germline development. PLOS Biology, 8, e1000509.
Gurley, K.A., Rink, J.C. & Sánchez Alvarado, A. (2008). Beta-catenin defines head versus tail identity during planarian regeneration and homeostasis. Science, 319, 323-327.
Molina, M.D., Neto, A., Maeso, I., Gomez-Skarmeta, J.L., Salo, E. & Cebrià, F. (2011). noggin and noggin-like genes control dorsoventral axis regeneration in planarians. Current Biology, 21, 300-305.
Oviedo, N.J. & Levin, M. (2007). smedinx-11 is a planarian stem cell gap junction gene required for regeneration and homeostasis. Development, 134, 3121-3131.
Reddien, P.W., Bermange, A.L., Murfitt, K.J., Jennings, J.R. & Sanchez Alvarado, A. (2005). Identification of genes needed for regeneration, stem cell function, and tissue homeostasis by systematic gene perturbation in planaria. Developmental Cell, 8, 635-649.
Sánchez Alvarado, A. & Newmark, P.A. (1999). dsRNA specifically disrupts gene expression during planarian regeneration. Proceedings of the National Academy of Science USA, 96, 5049-5054.
Witchley, J.N., Mayer, M., Wagner, D.E., Owen, J.H. & Reddien, P.W. (2013). Muscle cells provide instructions for planarian regeneration. Cell Reports, 4, 633-641.