Journal
BMC GENOMICS
Volume 23, Issue 1, Pages -Publisher
BMC
DOI: 10.1186/s12864-022-08704-4
Keywords
RNA sequencing; SerpinB2-deficient mouse; MMTV-PyMT transgenic mouse; Breast cancer; Differentially expressed genes
Funding
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and future Planning [2015R1A2A1A05001860]
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SerpinB2 deficiency alters the expression of multiple genes in mammary tumors, which might cause a delay in PyMT-induced mammary tumor progression.
Background SerpinB2 is highly expressed in immune and tumor cells and is involved in multiple biological functions, including cell survival and remodeling for disease progression. This study prepared SerpinB2-deficient mice and analyzed the differentially expressed genes (DEGs) to determine if loss of this protein delays mammary tumor progression. Results A total of 305 DEGs (75 upregulated and 230 downregulated; > 1.5-fold difference, P < 0.05) were identified in SB2-/-;PyMT tumors compared with PyMT tumors. The DEGs were mainly involved in immune and inflammatory responses related to T cell differentiation, IFN-gamma production, and lymphocyte chemotaxis based on 61 enriched GO terms, hierarchical clustering, KEGG pathways, and a functionally grouped annotation network. The significantly changed DEGs (Anxa3, Ccl17, Cxcl13, Cxcr3, IFN-gamma, Nr4a1, and Sema3a) annotated with at least two GO categories in SB2-/-;PyMT tumors was validated by qRT-PCR. Conclusions SerpinB2 deficiency alters the expression of multiple genes in mammary tumors, which might cause a delay in PyMT-induced mammary tumor progression.
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