Expression of acetylcholine in lymphocytes and modulation of an independent lymphocytic cholinergic activity by immunological stimulation

Takeshi Fujii, Yoshihiro Watanabe, Kazuko Fujimoto, Koichiro Kawashima

研究成果: Article

21 引用 (Scopus)

抄録

Although acetylcholine (ACh) is classically thought of as a neurotransmitter in mammalian species, lymphocytes possess most of the components needed to constitute an independent non-neuronal cholinergic system. These include ACh itself, choline acetyltransferase (ChAT), high-affinity choline transporter, acetylcholinesterase, and both muscarinic and nicotinic ACh receptors (mAChRs and nAChRs, respectively). Activation of mAChRs and nAChRs on lymphocytes elicits increases in the intracellular Ca2+ concentration and stimulates c-fos gene expression and nitric oxide synthesis. Which subpopulations of T lymphocytes are the source of blood ACh is not yet known, though expression of ChAT mRNA was observed in human peripheral CD4+ (helper) but not in CD8+ (cytotoxic) T cells. Stimulation of lymphocytes with phytohemagglutinin, a T-cell activator, or with monoclonal antibodies that bind the CD7 and/or CD11a cell surface molecules activates lymphocytic cholinergic activity, as evidenced by increased synthesis and release of ACh and up-regulation of expression of ChAT and M5 mAChR mRNA. Abnormalities in the lymphocytic cholinergic system have been detected in spontaneously hypertensive rats and MRL-lpr mice, two animal models of immune disorders. Taken together, these data present a compelling picture in which immune function is, at least in part, under the control of an independent non-neuronal lymphocytic cholinergic system.

元の言語English
ページ(範囲)373-386
ページ数14
ジャーナルBiogenic Amines
17
発行部数4-6
出版物ステータスPublished - 2003

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Cholinergic Agents
Acetylcholine
Choline O-Acetyltransferase
Immunization
Lymphocytes
T-Lymphocytes
Inbred MRL lpr Mouse
fos Genes
Messenger RNA
Immune System Diseases
Nicotinic Receptors
Phytohemagglutinins
Muscarinic Receptors
Inbred SHR Rats
Acetylcholinesterase
Lymphocyte Activation
Neurotransmitter Agents
Nitric Oxide
Up-Regulation
Animal Models

ASJC Scopus subject areas

  • Pharmacology
  • Neuroscience(all)

これを引用

Expression of acetylcholine in lymphocytes and modulation of an independent lymphocytic cholinergic activity by immunological stimulation. / Fujii, Takeshi; Watanabe, Yoshihiro; Fujimoto, Kazuko; Kawashima, Koichiro.

:: Biogenic Amines, 巻 17, 番号 4-6, 2003, p. 373-386.

研究成果: Article

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