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Mol. Cells 2008; 26(5): 503-513

Published online November 30, 2008

© The Korean Society for Molecular and Cellular Biology

The Vomeronasal Organ and Adjacent Glands Express Components of Signaling Cascades Found in Sensory Neurons in the Main Olfactory System

Sang Jin Lee, Alex Mammen, Esther J. Kim, So Yeun Kim, Yun Ju Park, Mira Park, Hyung Soo Han, Yong-Chul Bae, Gabriele V. Ronnett and Cheil Moon

Abstract

The vomeronasal organ (VNO) is a sensory organ that influences social and/or reproductive behavior and, in many cases, the survival of an organism. The VNO is believed to mediate responses to pheromones; however, many mechanisms of signal transduction in the VNO remain elusive. Here, we examined the expression of proteins involved in signal transduction that are found in the main olfactory system in the VNO. The localization of many signaling molecules in the VNO is quite different from those in the main olfactory system, suggesting differences in signal transduction mechanisms between these two chemosensory organs. Various signaling molecules are expressed in distinct areas of VNO sensory epithelium. Interestingly, we found the expressions of groups of these signaling molecules in glandular tissues adjacent to VNO, supporting the physiological significance of these glandular tissues. Our finding of high expression of signaling proteins in glandular tissues suggests that neurohumoral factors influence glandular tissues to modulate signaling cascades that in turn alter the responses of the VNO to hormonal status.

Keywords gland, immunohistochemistry, olfaction, pheromone, signal transduction, VNO, vomeronasal

Article

Research Article

Mol. Cells 2008; 26(5): 503-513

Published online November 30, 2008

Copyright © The Korean Society for Molecular and Cellular Biology.

The Vomeronasal Organ and Adjacent Glands Express Components of Signaling Cascades Found in Sensory Neurons in the Main Olfactory System

Sang Jin Lee, Alex Mammen, Esther J. Kim, So Yeun Kim, Yun Ju Park, Mira Park, Hyung Soo Han, Yong-Chul Bae, Gabriele V. Ronnett and Cheil Moon

Abstract

The vomeronasal organ (VNO) is a sensory organ that influences social and/or reproductive behavior and, in many cases, the survival of an organism. The VNO is believed to mediate responses to pheromones; however, many mechanisms of signal transduction in the VNO remain elusive. Here, we examined the expression of proteins involved in signal transduction that are found in the main olfactory system in the VNO. The localization of many signaling molecules in the VNO is quite different from those in the main olfactory system, suggesting differences in signal transduction mechanisms between these two chemosensory organs. Various signaling molecules are expressed in distinct areas of VNO sensory epithelium. Interestingly, we found the expressions of groups of these signaling molecules in glandular tissues adjacent to VNO, supporting the physiological significance of these glandular tissues. Our finding of high expression of signaling proteins in glandular tissues suggests that neurohumoral factors influence glandular tissues to modulate signaling cascades that in turn alter the responses of the VNO to hormonal status.

Keywords: gland, immunohistochemistry, olfaction, pheromone, signal transduction, VNO, vomeronasal

Mol. Cells
Sep 30, 2022 Vol.45 No.9, pp. 603~672
COVER PICTURE
The Target of Rapamycin Complex (TORC) is a central regulatory hub in eukaryotes, which is well conserved in diverse plant species, including tomato (Solanum lycopersicum). Inhibition of TORC genes (SlTOR, SlLST8, and SlRAPTOR) by VIGS (virus-induced gene silencing) results in early fruit ripening in tomato. The red/ orange tomatoes are early-ripened TORC-silenced fruits, while the green tomato is a control fruit. Top, left, control fruit (TRV2-myc); top, right, TRV2-SlLST8; bottom, left, TRV2-SlTOR; bottom, right, TRV2-SlRAPTOR(Choi et al., pp. 660-672).

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