Alpinia oxyphylla Miq. fruit extract activates IGFR-PI3K/Akt signaling to induce Schwann cell proliferation and sciatic nerve regeneration

Yung Ming Chang, Hen Hong Chang, Chin Chuan Tsai, Hung Jen Lin, Tsung Jung Ho, Chi Xin Ye, Ping Ling Chiu, Yueh Sheng Chen, Ray Jade Chen, Chih Yang Huang, Chien Chung Lin

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Background: It is known that the medicinal herb Alpinia oxyphylla Miq. is widely used as a remedy for diarrhea as well as the symptoms accompanying hypertension and cerebrovascular disorders. Moreover, it has also been reported that Alpinia oxyphylla Miq. has beneficial effects on anti-senescence and neuro-protection. This study focuses on the molecular mechanisms by which the Alpinia oxyphylla Miq. fruits promote neuron regeneration. Methods: A piece of silicone rubber was guided across a 15 mm gap in the sciatic nerve of a rat. This nerve gap was then filled with various doses of Alpinia oxyphylla Miq. fruits to assess their regenerative effect on damaged nerves. Further, we investigated the role of Alpinia oxyphylla Miq. fruits in RSC96 Schwann cell proliferation. Results: Our current results showed that treatment with the extract of Alpinia oxyphylla Miq. fruits triggers the phosphorylated insulin-like growth factor-1 receptor- phosphatidylinositol 3-kinase/serine-threonine kinase pathway, and up-regulated the proliferating cell nuclear antigen in a dose-dependent manner. Cell cycle analysis on RSC96 Schwann cells showed that, after exposure to Alpinia oxyphylla Miq. fruit extract, the transition from the first gap phase to the synthesis phase occurs in 12-18 h. The expression of the cell cycle regulatory proteins cyclin D1, cyclin E and cyclin A increased in a dose-dependent manner. Transfection with a small interfering RNA blocked the expression of phosphatidylinositol 3-kinase and induced down-regulation both on the mRNA and protein levels, which resulted in a reduction of the expression of the survival factor B-cell lymphoma 2. Conclusion: We provide positive results that demonstrate that Alpinia oxyphylla Miq. fruits facilitate the survival and proliferation of RSC96 cells via insulin-like growth factor-1 signaling.

Original languageEnglish
Article number184
JournalBMC Complementary and Alternative Medicine
Volume17
Issue number1
DOIs
Publication statusPublished - Mar 31 2017

Fingerprint

Alpinia
Nerve Regeneration
Schwann Cells
Sciatic Nerve
Phosphatidylinositol 3-Kinases
Cell Proliferation
Fruit
Phosphatidylinositol 3-Kinase
Somatomedin Receptors
Cerebrovascular Disorders
Cyclin A
Silicone Elastomers
Cyclin E
Cell Cycle Proteins
Protein-Serine-Threonine Kinases
Cyclin D1
Proliferating Cell Nuclear Antigen
G1 Phase
B-Cell Lymphoma
Somatomedins

Keywords

  • Alpinia oxyphylla Miq. fruit extract
  • IGF-1
  • Nerve regeneration
  • Proliferation
  • RSC96 Schwann cell

ASJC Scopus subject areas

  • Complementary and alternative medicine

Cite this

Alpinia oxyphylla Miq. fruit extract activates IGFR-PI3K/Akt signaling to induce Schwann cell proliferation and sciatic nerve regeneration. / Chang, Yung Ming; Chang, Hen Hong; Tsai, Chin Chuan; Lin, Hung Jen; Ho, Tsung Jung; Ye, Chi Xin; Chiu, Ping Ling; Chen, Yueh Sheng; Chen, Ray Jade; Huang, Chih Yang; Lin, Chien Chung.

In: BMC Complementary and Alternative Medicine, Vol. 17, No. 1, 184, 31.03.2017.

Research output: Contribution to journalArticle

Chang, Yung Ming ; Chang, Hen Hong ; Tsai, Chin Chuan ; Lin, Hung Jen ; Ho, Tsung Jung ; Ye, Chi Xin ; Chiu, Ping Ling ; Chen, Yueh Sheng ; Chen, Ray Jade ; Huang, Chih Yang ; Lin, Chien Chung. / Alpinia oxyphylla Miq. fruit extract activates IGFR-PI3K/Akt signaling to induce Schwann cell proliferation and sciatic nerve regeneration. In: BMC Complementary and Alternative Medicine. 2017 ; Vol. 17, No. 1.
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AU - Tsai, Chin Chuan

AU - Lin, Hung Jen

AU - Ho, Tsung Jung

AU - Ye, Chi Xin

AU - Chiu, Ping Ling

AU - Chen, Yueh Sheng

AU - Chen, Ray Jade

AU - Huang, Chih Yang

AU - Lin, Chien Chung

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