TY - JOUR KW - Bone metastasis KW - Breast cancer KW - IL, interleukin KW - IL-6, interleukin 6 KW - MCP-1, monocyte chemoattractant protein 1 KW - MIP-1α, macrophage inflammatory protein 1α KW - Metastasis-on-a-chip KW - NE, norepinephrine KW - PDMS, poly-dimethylsiloxane KW - Paracrine KW - SNS, Sympathetic Nervous System KW - Sympathetic nervous system KW - TH, tyrosine hydroxylase AU - Francisco Conceição AU - Daniela M. Sousa AU - Joshua Loessberg-Zahl AU - Anke R. Vollertsen AU - Estrela Neto AU - Kent Søe AU - Joana Paredes AU - Anne Leferink AU - Meriem Lamghari AB - Organ-on-a-chip models have emerged as a powerful tool to model cancer metastasis and to decipher specific crosstalk between cancer cells and relevant regulators of this particular niche. Recently, the sympathetic nervous system (SNS) was proposed as an important modulator of breast cancer bone metastasis. However, epidemiological studies concerning the benefits of the SNS targeting drugs on breast cancer survival and recurrence remain controversial. Thus, the role of SNS signaling over bone metastatic cancer cellular processes still requires further clarification. Herein, we present a novel humanized organ-on-a-chip model recapitulating neuro-breast cancer crosstalk in a bone metastatic context. We developed and validated an innovative three-dimensional printing based multi-compartment microfluidic platform, allowing both selective and dynamic multicellular paracrine signaling between sympathetic neurons, bone tropic breast cancer cells and osteoclasts. The selective multicellular crosstalk in combination with biochemical, microscopic and proteomic profiling show that synergistic paracrine signaling from sympathetic neurons and osteoclasts increase breast cancer aggressiveness demonstrated by augmented levels of pro-inflammatory cytokines (e.g. interleukin-6 and macrophage inflammatory protein 1α). Overall, this work introduced a novel and versatile platform that could potentially be used to unravel new mechanisms involved in intracellular communication at the bone metastatic niche. BT - Materials Today. Bio DA - 2022-01 DO - 10.1016/j.mtbio.2022.100219 LA - eng N2 - Organ-on-a-chip models have emerged as a powerful tool to model cancer metastasis and to decipher specific crosstalk between cancer cells and relevant regulators of this particular niche. Recently, the sympathetic nervous system (SNS) was proposed as an important modulator of breast cancer bone metastasis. However, epidemiological studies concerning the benefits of the SNS targeting drugs on breast cancer survival and recurrence remain controversial. Thus, the role of SNS signaling over bone metastatic cancer cellular processes still requires further clarification. Herein, we present a novel humanized organ-on-a-chip model recapitulating neuro-breast cancer crosstalk in a bone metastatic context. We developed and validated an innovative three-dimensional printing based multi-compartment microfluidic platform, allowing both selective and dynamic multicellular paracrine signaling between sympathetic neurons, bone tropic breast cancer cells and osteoclasts. The selective multicellular crosstalk in combination with biochemical, microscopic and proteomic profiling show that synergistic paracrine signaling from sympathetic neurons and osteoclasts increase breast cancer aggressiveness demonstrated by augmented levels of pro-inflammatory cytokines (e.g. interleukin-6 and macrophage inflammatory protein 1α). Overall, this work introduced a novel and versatile platform that could potentially be used to unravel new mechanisms involved in intracellular communication at the bone metastatic niche. PY - 2022 EP - 100219 T2 - Materials Today. Bio TI - A metastasis-on-a-chip approach to explore the sympathetic modulation of breast cancer bone metastasis VL - 13 SN - 2590-0064 ER -