Abstract
The Cellular Communication Network Factor (CCN) family is composed of six members: CCN1/CYR61, CCN2/CTGF, CCN3/NOV, CCN4/WISP1, CCN5/WISP2, and CCN6/WISP3. The second member, CCN2/CTGF is a matricellular protein that promotes extracellular matrix (ECM) synthesis and controls angiogenesis. On the other hand, moonlighting/matrix metalloproteinase 3 (MMP3) is an ECM-degrading enzyme that also functions as an intracellular transcription factor. Importantly, extracellular MMP3 is uptaken into cells, translocating into nuclei, and transcriptionally activating CCN2/CTGF gene in cancer and chondrocytes. Thus, the MMP3-CTGF axis balances the matrix metabolism and turnover in the tissue and tumor microenvironments. We established an MMP3 knockout cell line using the CRISPR/Cas9 system, demonstrating the sequential regulatory events of the MMP3-CCN2 axis in the microenvironment. Notably, our protocol is useful for generation of CCN knockout cells as well. Here we serve a protocol of the CRISPR/Cas9-based gene targeting in cultured cells for investigating cellular communication network.
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Acknowledgments
T.E was supported by JSPS Kakenhi, grant numbers 17K11642-TE, 20K09904-CS, 19H03817-MT, 20H03888-HN, 20K20611-MT, 20H03888-HN, 21H03119-TY, and 21K08902-HY. Y.O was supported by JSPS overseas research fellowship. The authors thank Eriko Aoyama, Satoshi Kubota, Kuniaki Okamoto, Chiharu Sogawa, Eman Taha, Masaharu Takigawa, and Manh Tien Tran for useful information, discussion, materials, or experimentation.
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Okusha, Y., Eguchi, T. (2023). Protocol for CRISPR/Cas Genome Editing for Investigating Cell Communication Network. In: Takigawa, M. (eds) CCN Proteins. Methods in Molecular Biology, vol 2582. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-2744-0_11
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DOI: https://doi.org/10.1007/978-1-0716-2744-0_11
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