Title | Extracellular Matrix in Synthetic Hydrogel-Based Prostate Cancer Organoids Regulate Therapeutic Response to EZH2 and DRD2 Inhibitors. |
Publication Type | Journal Article |
Year of Publication | 2022 |
Authors | Mosquera MJ, Kim S, Bareja R, Fang Z, Cai S, Pan H, Asad M, Martin MLaura, Sigouros M, Rowdo FM, Ackermann S, Capuano J, Bernheim J, Cheung C, Doane A, Brady N, Singh R, Rickman DS, Prabhu V, Allen JE, Puca L, Coskun AF, Rubin MA, Beltran H, Mosquera JMiguel, Elemento O, Singh A |
Journal | Adv Mater |
Volume | 34 |
Issue | 2 |
Pagination | e2100096 |
Date Published | 2022 Jan |
ISSN | 1521-4095 |
Keywords | Androgen Receptor Antagonists, Animals, Cell Line, Tumor, Enhancer of Zeste Homolog 2 Protein, Extracellular Matrix, Humans, Hydrogels, Male, Mice, Organoids, Prostatic Neoplasms, Castration-Resistant, Receptors, Dopamine D2 |
Abstract | Following treatment with androgen receptor (AR) pathway inhibitors, ≈20% of prostate cancer patients progress by shedding their AR-dependence. These tumors undergo epigenetic reprogramming turning castration-resistant prostate cancer adenocarcinoma (CRPC-Adeno) into neuroendocrine prostate cancer (CRPC-NEPC). No targeted therapies are available for CRPC-NEPCs, and there are minimal organoid models to discover new therapeutic targets against these aggressive tumors. Here, using a combination of patient tumor proteomics, RNA sequencing, spatial-omics, and a synthetic hydrogel-based organoid, putative extracellular matrix (ECM) cues that regulate the phenotypic, transcriptomic, and epigenetic underpinnings of CRPC-NEPCs are defined. Short-term culture in tumor-expressed ECM differentially regulated DNA methylation and mobilized genes in CRPC-NEPCs. The ECM type distinctly regulates the response to small-molecule inhibitors of epigenetic targets and Dopamine Receptor D2 (DRD2), the latter being an understudied target in neuroendocrine tumors. In vivo patient-derived xenograft in immunocompromised mice showed strong anti-tumor response when treated with a DRD2 inhibitor. Finally, we demonstrate that therapeutic response in CRPC-NEPCs under drug-resistant ECM conditions can be overcome by first cellular reprogramming with epigenetic inhibitors, followed by DRD2 treatment. The synthetic organoids suggest the regulatory role of ECM in therapeutic response to targeted therapies in CRPC-NEPCs and enable the discovery of therapies to overcome resistance. |
DOI | 10.1002/adma.202100096 |
Alternate Journal | Adv Mater |
PubMed ID | 34676924 |
PubMed Central ID | PMC8820841 |
Grant List | 5R01AI132738-04 / NH / NIH HHS / United States 1T32EB023860-01A1 / NH / NIH HHS / United States R01 AI132738 / AI / NIAID NIH HHS / United States EEC-1648035 / / Burroughs Wellcome Fund National Science Foundation / R37 CA241486 / CA / NCI NIH HHS / United States / WT_ / Wellcome Trust / United Kingdom T32 EB023860 / EB / NIBIB NIH HHS / United States DMR-1554275 / / National Science Foundation / 1R01CA238745-01A1 / / Wellcome Leap HOPE Program National Institutes of Health / R01 CA238745 / CA / NCI NIH HHS / United States 5P50CA211024 / NH / NIH HHS / United States P50 CA211024 / CA / NCI NIH HHS / United States |