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Feng Z, Sun N, Noor F, Sun P, Zhang H, Zhong J, Yin W, Fan K, Yang H, Zhang Z, Sun Y, Li H. Matrine Targets BTF3 to Inhibit the Growth of Canine Mammary Tumor Cells. Int J Mol Sci 2023; 25:540. [PMID: 38203709 PMCID: PMC10779273 DOI: 10.3390/ijms25010540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/21/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
The canine mammary tumor model is more suitable for studying human breast cancer, and the safety concentrations of matrine and the biotin-labeled matrine probe were determined in canine primary mammary epithelial cells, and then selected canine mammary tumor cell lines CHMm and CHMp were incubated with matrine, and cell viability was detected by CCK-8. The biotin-labeled matrine probe was used to pull-down the targets of matrine in canine mammary tumor cells, and the targets were screened in combination with activity-based protein profiling (ABPP) and Genecards database, and verified by qPCR and western blot. The results showed that the maximum non-cytotoxic concentrations of matrine and biotin-labeled matrine probe in canine primary mammary epithelial cells were 250 μg/mL and 500 μg/mL, respectively. Matrine and biotin-labeled matrine probe had a proliferation inhibitory effect time-dependently on CHMm and CHMp cells within a safe concentration range, and induced autophagy in cells. Then BTF3 targets were obtained by applying ABPP and Genecards screening. Cellular thermal shift assay (CETSA) findings indicated that matrine could increase the heat stability of BTF3 protein. Pull-down employing biotin-labeled matrine probe with CHMm and CHMp cell lysates revealed that BTF3 protein was detected in the biotin-labeled matrine probe group and that BTF3 protein was significantly decreased by the addition of matrine. The qPCR and western blot findings of CHMm and CHMp cells treated with matrine revealed that matrine decreased the expression of the BTF3 gene and protein with the extension of the action time, and the impact was more substantial at the protein level, respectively.
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Affiliation(s)
- Zijian Feng
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030600, China; (Z.F.); (N.S.); (F.N.); (P.S.); (H.Z.); (J.Z.); (W.Y.); (H.Y.); (Y.S.)
| | - Na Sun
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030600, China; (Z.F.); (N.S.); (F.N.); (P.S.); (H.Z.); (J.Z.); (W.Y.); (H.Y.); (Y.S.)
| | - Fida Noor
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030600, China; (Z.F.); (N.S.); (F.N.); (P.S.); (H.Z.); (J.Z.); (W.Y.); (H.Y.); (Y.S.)
| | - Panpan Sun
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030600, China; (Z.F.); (N.S.); (F.N.); (P.S.); (H.Z.); (J.Z.); (W.Y.); (H.Y.); (Y.S.)
| | - Hua Zhang
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030600, China; (Z.F.); (N.S.); (F.N.); (P.S.); (H.Z.); (J.Z.); (W.Y.); (H.Y.); (Y.S.)
| | - Jia Zhong
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030600, China; (Z.F.); (N.S.); (F.N.); (P.S.); (H.Z.); (J.Z.); (W.Y.); (H.Y.); (Y.S.)
| | - Wei Yin
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030600, China; (Z.F.); (N.S.); (F.N.); (P.S.); (H.Z.); (J.Z.); (W.Y.); (H.Y.); (Y.S.)
| | - Kuohai Fan
- Laboratory Animal Center, Shanxi Agricultural University, Jinzhong 030600, China; (K.F.); (Z.Z.)
| | - Huizhen Yang
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030600, China; (Z.F.); (N.S.); (F.N.); (P.S.); (H.Z.); (J.Z.); (W.Y.); (H.Y.); (Y.S.)
| | - Zhenbiao Zhang
- Laboratory Animal Center, Shanxi Agricultural University, Jinzhong 030600, China; (K.F.); (Z.Z.)
| | - Yaogui Sun
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030600, China; (Z.F.); (N.S.); (F.N.); (P.S.); (H.Z.); (J.Z.); (W.Y.); (H.Y.); (Y.S.)
| | - Hongquan Li
- Shanxi Key Laboratory for Modernization of TCVM, College of Veterinary Medicine, Shanxi Agricultural University, Jinzhong 030600, China; (Z.F.); (N.S.); (F.N.); (P.S.); (H.Z.); (J.Z.); (W.Y.); (H.Y.); (Y.S.)
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Zhou W, Yun Z, Wang T, Li C, Zhang J. BTF3-mediated regulation of BMI1 promotes colorectal cancer through influencing epithelial-mesenchymal transition and stem cell-like traits. Int J Biol Macromol 2021; 187:800-810. [PMID: 34293363 DOI: 10.1016/j.ijbiomac.2021.07.106] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/12/2021] [Accepted: 07/15/2021] [Indexed: 01/05/2023]
Abstract
The critical roles of transcription factors in cell differentiation and the delineation of cell phenotypes have been reported. The current study aimed to characterize the functions of the basic transcription factor 3 (BTF3) gene and its regulation of the intestinal stem cell marker B cell-specific Moloney murine leukemia virus insertion site 1 (BMI1) gene in colorectal cancer (CRC). Stem cell-like traits and epithelial-mesenchymal transition (EMT) of cultured human CRC cell line HCT116 were evaluated by CD133+ subpopulation counting, colony formation, tumorosphere generation, and expression of EMT-specific markers and stem cell markers. The interaction of BTF3 with BMI1 was analyzed. BTF3 was overexpressed in CRC tissues, which was associated with poor patient survival. BTF3 knockdown impaired the retention of stem cell-like traits of HCT116 and inhibited the EMT of HCT116 cells. BMI1 expression changed in a BTF3-dependent manner, and its overexpression could partially restore stem cell-like traits and EMT of cultured HCT116 cells after BTF3 knockdown. In parallel, treatment with the BMI1 inhibitor PTC-209 mimicked the effects of BTF3 knockdown on stem cell-like traits and EMT of cultured HCT116 cells. Together, these results support the notion that BTF3 and BMI1 are potential therapeutic targets to limit CRC metastasis.
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Affiliation(s)
- Wenli Zhou
- Department of Neonatology, The First Hospital of Jilin University, Changchun 130000, PR China
| | - Zhennan Yun
- Department of Colorectal and Anal Surgery, The First Hospital of Jilin University, Changchun 130000, PR China
| | - Ting Wang
- Department of Colorectal and Anal Surgery, The First Hospital of Jilin University, Changchun 130000, PR China
| | - Chao Li
- Department of Colorectal and Anal Surgery, The First Hospital of Jilin University, Changchun 130000, PR China
| | - Jiantao Zhang
- Department of Colorectal and Anal Surgery, The First Hospital of Jilin University, Changchun 130000, PR China.
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Yang X, Cheng Y, Li X, Zhou J, Dong Y, Shen B, Zhao L, Wang J. A Novel Transcription Factor-Based Prognostic Signature in Endometrial Cancer: Establishment and Validation. Onco Targets Ther 2021; 14:2579-2598. [PMID: 33880037 PMCID: PMC8053499 DOI: 10.2147/ott.s293085] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 02/18/2021] [Indexed: 12/24/2022] Open
Abstract
Background Endometrial cancer (EC) is a common malignancy of the female reproductive system worldwide. Increasing evidence has suggested that many transcription factors are aberrantly expressed in various cancers. This study aimed to develop a transcription factor-based prognostic signature for EC. Methods Gene expression data and clinical data of EC patients were downloaded from The Cancer Genome Atlas (TCGA) database. Univariate Cox regression and Multivariate Cox regression analysis was used to construct a prognostic signature. Then, the efficacy of the prognostic signature was validated in a training cohort, testing cohort and then the entire cohort. Correlations between clinical features and the model were also analyzed, and a nomogram based on the multivariate Cox analysis was developed. Furthermore, we verified the effect of a key transcription factor, E2F1, on biological functions of EC in vitro. Results We developed a nine-transcription factor (MSX1, HOXB9, E2F1, DLX4, BNC2, DLX2, PDX1, POU3F2, and FOXP3) prognostic signature. Compared with those in the low-risk group, patients in the high-risk group had worse clinical outcomes. The area under the curve (AUC) of this prognostic signature for 5-year survival was 0.806 in the training cohort, 0.710 in the testing cohort and 0.761 in the entire cohort. Gene set enrichment analysis (GSEA) revealed a correlation between the prognostic signature and various cancer signaling pathways, and a hub transcription factor regulatory network was constructed. The prognostic signature was confirmed to have independent predictive value. Finally, a nomogram based on the prognostic signature and clinical independent prognostic factors was also established and performed well according to the calibration curves. Further, knockdown of E2F1 inhibited invasion and metastasis of EC cells. Conclusion Our study developed and validated a transcription factor-based prognostic signature that accurately predicts prognosis of EC patients. Moreover, E2F1 may represent a potential target for the treatment of EC.
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Affiliation(s)
- Xiao Yang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, People's Republic of China
| | - Yuan Cheng
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, People's Republic of China
| | - Xingchen Li
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, People's Republic of China
| | - Jingyi Zhou
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, People's Republic of China
| | - Yangyang Dong
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, People's Republic of China
| | - Boqiang Shen
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, People's Republic of China
| | - Lijun Zhao
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, People's Republic of China
| | - Jianliu Wang
- Department of Obstetrics and Gynecology, Peking University People's Hospital, Beijing, People's Republic of China
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Wang H, Xing J, Wang W, Lv G, He H, Lu Y, Sun M, Chen H, Li X. Molecular Characterization of the Oncogene BTF3 and Its Targets in Colorectal Cancer. Front Cell Dev Biol 2021; 8:601502. [PMID: 33644029 PMCID: PMC7905040 DOI: 10.3389/fcell.2020.601502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 11/26/2020] [Indexed: 01/12/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most commonly diagnosed and leading causes of cancer mortality worldwide, and the prognosis of patients with CRC remains unsatisfactory. Basic transcription factor 3 (BTF3) is an oncogene and hazardous prognosticator in CRC. Although two distinct functional mechanisms of BTF3 in different cancer types have been reported, its role in CRC is still unclear. In this study, we aimed to molecularly characterize the oncogene BTF3 and its targets in CRC. Here, we first identified the transcriptional targets of BTF3 by applying combined RNA-Seq and ChIP-Seq analysis, identifying CHD1L as a transcriptional target of BTF3. Thereafter, we conducted immunoprecipitation (IP)-MS and E3 ubiquitin ligase analysis to identify potential interacting targets of BTF3 as a subunit of the nascent-polypeptide-associated complex (NAC). The analysis revealed that BTF3 might also inhibit E3 ubiquitin ligase HERC2-mediated p53 degradation. Finally, miRNAs targeting BTF3 were predicted and validated. Decreased miR-497-5p expression is responsible for higher levels of BTF3 post-transcriptionally. Collectively, we concluded that BTF3 is an oncogene, and there may exist a transcription factor and NAC-related proteolysis mechanism in CRC. This study provides a comprehensive basis for understanding the oncogenic mechanisms of BTF3 in CRC.
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Affiliation(s)
- Hantao Wang
- Department of Colorectal Surgery, Changhai Hospital, Shanghai, China
| | - Junjie Xing
- Department of Colorectal Surgery, Changhai Hospital, Shanghai, China
| | - Wei Wang
- Department of Colorectal Surgery, Changhai Hospital, Shanghai, China
| | - Guifen Lv
- Department of Colorectal Surgery, Changhai Hospital, Shanghai, China
| | - Haiyan He
- Department of Digestive Endoscopy, Changhai Hospital, Shanghai, China
| | - Yeqing Lu
- Department of Anesthesiology, Changhai Hospital, Shanghai, China
| | - Mei Sun
- Department of Anesthesiology, Changhai Hospital, Shanghai, China
| | - Haiyan Chen
- Department of Endocrinology, Changzheng Hospital, Shanghai, China
| | - Xu Li
- Department of Colorectal Surgery, Changhai Hospital, Shanghai, China
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Kim Y, Ghil S. Regulators of G-protein signaling, RGS2 and RGS4, inhibit protease-activated receptor 4-mediated signaling by forming a complex with the receptor and Gα in live cells. Cell Commun Signal 2020; 18:86. [PMID: 32517689 PMCID: PMC7285472 DOI: 10.1186/s12964-020-00552-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 03/11/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Protease-activated receptor 4 (PAR4) is a seven transmembrane G-protein coupled receptor (GPCR) activated by endogenous proteases, such as thrombin. PAR4 is involved in various pathophysiologies including cancer, inflammation, pain, and thrombosis. Although regulators of G-protein signaling (RGS) are known to modulate GPCR/Gα-mediated pathways, their specific effects on PAR4 are not fully understood at present. We previously reported that RGS proteins attenuate PAR1- and PAR2-mediated signaling through interactions with these receptors in conjunction with distinct Gα subunits. METHODS We employed a bioluminescence resonance energy transfer technique and confocal microscopy to examine potential interactions among PAR4, RGS, and Gα subunits. The inhibitory effects of RGS proteins on PAR4-mediated downstream signaling and cancer progression were additionally investigated by using several assays including ERK phosphorylation, calcium mobilization, RhoA activity, cancer cell proliferation, and related gene expression. RESULTS In live cells, RGS2 interacts with PAR4 in the presence of Gαq while RGS4 binding to PAR4 occurs in the presence of Gαq and Gα12/13. Co-expression of PAR4 and Gαq induced a shift in the subcellular localization of RGS2 and RGS4 from the cytoplasm to plasma membrane. Combined PAR4 and Gα12/13 expression additionally promoted translocation of RGS4 from the cytoplasm to the membrane. Both RGS2 and RGS4 abolished PAR4-activated ERK phosphorylation, calcium mobilization and RhoA activity, as well as PAR4-mediated colon cancer cell proliferation and related gene expression. CONCLUSIONS RGS2 and RGS4 forms ternary complex with PAR4 in Gα-dependent manner and inhibits its downstream signaling. Our findings support a novel physiological function of RGS2 and RGS4 as inhibitors of PAR4-mediated signaling through selective PAR4/RGS/Gα coupling. Video Abstract.
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Affiliation(s)
- Yukeyoung Kim
- Department of Life Science, Kyonggi University, Suwon, 16227, South Korea
| | - Sungho Ghil
- Department of Life Science, Kyonggi University, Suwon, 16227, South Korea.
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