title: Neuronal differentiation elicited by glial cell line-derived neurotrophic factor and ciliary neurotrophic factor in adrenal chromaffin cell line tsAM5D immortalized with temperature-sensitive SV40 T-antigen.
abstract: To understand the characteristics of tsAM5D cells immortalized with the temperature-sensitive simian virus 40 large T-antigen, we first examined the responsiveness of the cells to ligands of the glial cell line-derived neurotrophic factor (GDNF) family. tsAM5D cells proliferated at the permissive temperature of 33 degrees C in response to either GDNF or neurturin, but not persephin or artemin. At the nonpermissive temperature of 39 degrees C, GDNF or neurturin caused tsAM5D cells to differentiate into neuron-like cells; however, the differentiated cells died in a time-dependent manner. Interestingly, ciliary neurotrophic factor (CNTF) did not affect the GDNF-mediated cell proliferation at 33 degrees C but promoted the survival and differentiation of GDNF-treated cells at 39 degrees C. In the presence of GDNF plus CNTF, the morphological change induced by the temperature shift was associated with up-regulated expression of various neuronal marker genes, indicating that the cells had undergone neuronal differentiation. In addition, tsAM5D cells caused to differentiate by GDNF plus CNTF at 39 degrees C became dependent solely on nerve growth factor (NGF) for their survival and neurite outgrowth. Moreover, upon treatment with GDNF plus CNTF, the dopaminergic phenotype was suppressed by the temperature shift. Thus, we demonstrated that tsAM5D cells had the capacity to differentiate terminally into neuron-like cells in response to GDNF plus CNTF when the oncogene was inactivated by the temperature shift. This cell line provides a useful model system for studying the role of a variety of signaling molecules for GDNF/CNTF-induced neuronal differentiation.
authors.affiliation: Department of Analytical Neurobiology, Faculty of Pharmacy, Meijo University, Tempaku, Nagoya, Japan.
authors.forename: Tomiyasu
authors.initials: T
authors.lastname: Murata
authors.forename: Masaru
authors.initials: M
authors.lastname: Tsuboi
authors.forename: Naoshi
authors.initials: N
authors.lastname: Koide
authors.forename: Kiyomi
authors.initials: K
authors.lastname: Hikita
authors.forename: Susumu
authors.initials: S
authors.lastname: Kohno
authors.forename: Norio
authors.initials: N
authors.lastname: Kaneda
mesh_terms: D000311:Adrenal Glands / Q000166:cytology / Q000502:physiology; D000818:Animals; D000952:Antigens, Polyomavirus Transforming / Q000502:physiology*; D016923:Cell Death / Q000502:physiology; D002454:Cell Differentiation / Q000502:physiology*; D002461:Cell Line, Transformed; D002478:Cells, Cultured; D019439:Chromaffin Cells / Q000166:cytology* / Q000502:physiology; D020934:Ciliary Neurotrophic Factor / Q000502:physiology*; D051100:Glial Cell Line-Derived Neurotrophic Factor / Q000502:physiology*; D006801:Humans; D020932:Nerve Growth Factor / Q000502:physiology; D009474:Neurons / Q000166:cytology* / Q000502:physiology; D051381:Rats; D013696:Temperature; D013997:Time Factors
chemical_list: D000952:Antigens, Polyomavirus Transforming; D020934:Ciliary Neurotrophic Factor; D051100:Glial Cell Line-Derived Neurotrophic Factor; D020932:Nerve Growth Factor