Pancreatic stellate cells reorganize matrix components and lead pancreatic cancer invasion via the function of Endo180

Specific cell populations leading the local invasion of cancer are called “leading cells”. However, the underlying mechanisms are unclear. Here, we identified leading cells in pancreatic cancer and determined how these cells lead and promote cancer cell invasion in the extracellular matrix (ECM). Us...

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Veröffentlicht in:Cancer letters 2018-01, Vol.412, p.143-154
Hauptverfasser: Koikawa, Kazuhiro, Ohuchida, Kenoki, Takesue, Shin, Ando, Yohei, Kibe, Shin, Nakayama, Hiromichi, Endo, Sho, Abe, Toshiya, Okumura, Takashi, Horioka, Kohei, Sada, Masafumi, Iwamoto, Chika, Moriyama, Taiki, Nakata, Kohei, Miyasaka, Yoshihiro, Ohuchida, Riichi, Manabe, Tatsuya, Ohtsuka, Takao, Nagai, Eishi, Mizumoto, Kazuhiro, Hashizume, Makoto, Nakamura, Masafumi
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container_end_page 154
container_issue
container_start_page 143
container_title Cancer letters
container_volume 412
creator Koikawa, Kazuhiro
Ohuchida, Kenoki
Takesue, Shin
Ando, Yohei
Kibe, Shin
Nakayama, Hiromichi
Endo, Sho
Abe, Toshiya
Okumura, Takashi
Horioka, Kohei
Sada, Masafumi
Iwamoto, Chika
Moriyama, Taiki
Nakata, Kohei
Miyasaka, Yoshihiro
Ohuchida, Riichi
Manabe, Tatsuya
Ohtsuka, Takao
Nagai, Eishi
Mizumoto, Kazuhiro
Hashizume, Makoto
Nakamura, Masafumi
description Specific cell populations leading the local invasion of cancer are called “leading cells”. However, the underlying mechanisms are unclear. Here, we identified leading cells in pancreatic cancer and determined how these cells lead and promote cancer cell invasion in the extracellular matrix (ECM). Using three-dimensional matrix remodeling assay, we found that pancreatic stellate cells (PSCs) frequently invaded the collagen matrix with pancreatic cancer cells (PCCs), which invaded behind the invading PSCs. In addition, invading PSCs changed the alignment of collagen fibers, resulting in ECM remodeling and an increase in the parallel fibers along the direction of invading PSCs. Endo180 expression was higher in PSCs than in PCCs, Endo180 knockdown in PSCs attenuated the invasive abilities of PSCs and co-cultured PCCs, and decreased the expression level of phosphorylated myosin light chain 2 (MLC2). In mouse models, Endo180-knockdown PSCs suppressed tumor growth and changes in collagen fiber orientation in co-transplantation with PCCs. Our findings suggest that PSCs lead the local invasion of PCCs by physically remodeling the ECM, possibly via the function of Endo180, which reconstructs the actin cell skeleton by phosphorylation of MLC2. •Pancreatic stellate cells (PSCs) lead pancreatic cancer cells (PCCs) invasion by extracellular matrix (ECM) remodeling.•Endo180 is related with invasive ability of leading PSCs via phosphorylation of myosin light chain 2 (MLC2).•Inhibition of Endo180 in PSCs suppressed the ability of ECM remodeling and consequently suppressed co-cultured PCCs invasion.
doi_str_mv 10.1016/j.canlet.2017.10.010
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However, the underlying mechanisms are unclear. Here, we identified leading cells in pancreatic cancer and determined how these cells lead and promote cancer cell invasion in the extracellular matrix (ECM). Using three-dimensional matrix remodeling assay, we found that pancreatic stellate cells (PSCs) frequently invaded the collagen matrix with pancreatic cancer cells (PCCs), which invaded behind the invading PSCs. In addition, invading PSCs changed the alignment of collagen fibers, resulting in ECM remodeling and an increase in the parallel fibers along the direction of invading PSCs. Endo180 expression was higher in PSCs than in PCCs, Endo180 knockdown in PSCs attenuated the invasive abilities of PSCs and co-cultured PCCs, and decreased the expression level of phosphorylated myosin light chain 2 (MLC2). In mouse models, Endo180-knockdown PSCs suppressed tumor growth and changes in collagen fiber orientation in co-transplantation with PCCs. 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subjects Actin
Animal models
Breast cancer
Cardiac Myosins - metabolism
Cell division
Cell Line, Tumor
Collagen
Collagen - chemistry
Endo180
Extracellular matrix
Extracellular Matrix - chemistry
Extracellular matrix remodeling
Fabric analysis
Fiber orientation
Fibers
Fibroblasts
Humans
Invasiveness
Leading cells
Medical prognosis
Metastasis
Myosin
Myosin Light Chains - metabolism
Neoplasm Invasiveness
Pancreatic cancer
Pancreatic Neoplasms - pathology
Pancreatic stellate cells
Pancreatic Stellate Cells - physiology
Parallel fibers
Phosphorylation
Receptors, Mitogen - physiology
Rodents
Signal transduction
Stellate cells
Transplantation
title Pancreatic stellate cells reorganize matrix components and lead pancreatic cancer invasion via the function of Endo180
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