Abstract
One of the earliest descriptions of non-neuronal ACh synthesis was by Morris who reported that ACh was synthesized in the placenta [1]; furthermore, Falugi et al. showed the presence of AChE in human fibrosarcoma cells [2]. Afterward, the expression of ACh, AChE, and cholinergic receptors in non-neuronal cells was reported in several studies [3-16]. Indeed, recent data reported that SCLC expresses a cholinergic autocrine loop that can regulate cell growth. Such work demonstrates that SCLC cells have a cholinergic phenotype and that ACh exerts as an autocrine growth factor in human lung tumours [16]. Moreover, it has been recently reported that nicotine in lung adenocarcinoma A549 cells, potently induces Bad phosphorylation at serine (S)112, S136 and S155 in a mechanism involving activation of MAPKs, ERK1/2, PI3K/AKT and PKA through the linking to α7-receptors [9]. Bad phosphorylation results in sequestering Bad from mitochondria and subsequently interacting with 14-3-3 in the cytosol [9]. We have recently reported that human malignant pleural mesothelioma expresses a cholinergic system, involved in cell growth regulation. Hence, mesothelioma cells growth is modulated by the cholinergic system in which agonists (i.e. nicotine) have a proliferative effect and antagonists (i.e. curare or α-cobratoxin) have an inhibitory effect. Furthermore apoptosis mechanisms are under the control of the cholinergic system (nicotine antiapoptotic via induction of NF-κB complexes and phosphorylation of Bad at S112, curare proapoptotic via G0-G1 arrest p21waf-1-dependent, but p53- independent) [16]. The involvement of the non-neuronal cholinergic system in lung cancer and mesothelioma appears reasonable and opens up new translational research strategies.
Keywords: Non-neuronal cholinergic system, neurotoxins, lung cancer, mesothelioma, cell growth
Current Medicinal Chemistry
Title: Development of Novel Therapeutic Strategies for Lung Cancer: Targeting the Cholinergic System
Volume: 13 Issue: 29
Author(s): P. Russo, A. Catassi, A. Cesario and D. Servent
Affiliation:
Keywords: Non-neuronal cholinergic system, neurotoxins, lung cancer, mesothelioma, cell growth
Abstract: One of the earliest descriptions of non-neuronal ACh synthesis was by Morris who reported that ACh was synthesized in the placenta [1]; furthermore, Falugi et al. showed the presence of AChE in human fibrosarcoma cells [2]. Afterward, the expression of ACh, AChE, and cholinergic receptors in non-neuronal cells was reported in several studies [3-16]. Indeed, recent data reported that SCLC expresses a cholinergic autocrine loop that can regulate cell growth. Such work demonstrates that SCLC cells have a cholinergic phenotype and that ACh exerts as an autocrine growth factor in human lung tumours [16]. Moreover, it has been recently reported that nicotine in lung adenocarcinoma A549 cells, potently induces Bad phosphorylation at serine (S)112, S136 and S155 in a mechanism involving activation of MAPKs, ERK1/2, PI3K/AKT and PKA through the linking to α7-receptors [9]. Bad phosphorylation results in sequestering Bad from mitochondria and subsequently interacting with 14-3-3 in the cytosol [9]. We have recently reported that human malignant pleural mesothelioma expresses a cholinergic system, involved in cell growth regulation. Hence, mesothelioma cells growth is modulated by the cholinergic system in which agonists (i.e. nicotine) have a proliferative effect and antagonists (i.e. curare or α-cobratoxin) have an inhibitory effect. Furthermore apoptosis mechanisms are under the control of the cholinergic system (nicotine antiapoptotic via induction of NF-κB complexes and phosphorylation of Bad at S112, curare proapoptotic via G0-G1 arrest p21waf-1-dependent, but p53- independent) [16]. The involvement of the non-neuronal cholinergic system in lung cancer and mesothelioma appears reasonable and opens up new translational research strategies.
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Cite this article as:
Russo P., Catassi A., Cesario A. and Servent D., Development of Novel Therapeutic Strategies for Lung Cancer: Targeting the Cholinergic System, Current Medicinal Chemistry 2006; 13 (29) . https://dx.doi.org/10.2174/092986706779026192
DOI https://dx.doi.org/10.2174/092986706779026192 |
Print ISSN 0929-8673 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-533X |
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