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Sengupta P, Dutta A, Suseela YV, Roychowdhury T, Banerjee N, Dutta A, Halder S, Jana K, Mukherjee G, Chattopadhyay S, Govindaraju T, Chatterjee S. G-quadruplex structural dynamics at MAPK12 promoter dictates transcriptional switch to determine stemness in breast cancer. Cell Mol Life Sci 2024; 81:33. [PMID: 38214819 PMCID: PMC11073236 DOI: 10.1007/s00018-023-05046-6] [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: 05/11/2023] [Revised: 10/26/2023] [Accepted: 11/09/2023] [Indexed: 01/13/2024]
Abstract
P38γ (MAPK12) is predominantly expressed in triple negative breast cancer cells (TNBC) and induces stem cell (CSC) expansion resulting in decreased survival of the patients due to metastasis. Abundance of G-rich sequences at MAPK12 promoter implied the functional probability to reverse tumorigenesis, though the formation of G-Quadruplex (G4) structures at MAPK12 promoter is elusive. Here, we identified two evolutionary consensus adjacent G4 motifs upstream of the MAPK12 promoter, forming parallel G4 structures. They exist in an equilibria between G4 and duplex, regulated by the binding turnover of Sp1 and Nucleolin that bind to these G4 motifs and regulate MAPK12 transcriptional homeostasis. To underscore the gene-regulatory functions of G4 motifs, we employed CRISPR-Cas9 system to eliminate G4s from TNBC cells and synthesized a naphthalene diimide (NDI) derivative (TGS24) which shows high-affinity binding to MAPK12-G4 and inhibits MAPK12 transcription. Deletion of G4 motifs and NDI compound interfere with the recruitment of the transcription factors, inhibiting MAPK12 expression in cancer cells. The molecular basis of NDI-induced G4 transcriptional regulation was analysed by RNA-seq analyses, which revealed that MAPK12-G4 inhibits oncogenic RAS transformation and trans-activation of NANOG. MAPK12-G4 also reduces CD44High/CD24Low population in TNBC cells and downregulates internal stem cell markers, arresting the stemness properties of cancer cells.
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Affiliation(s)
- Pallabi Sengupta
- Department of Biological Sciences, Unified Academic Campus, Bose Institute, EN-80, Sector V, Salt Lake, Bidhan Nagar, Kolkata, West Bengal, 700091, India
| | - Anindya Dutta
- Department of Biological Sciences, Unified Academic Campus, Bose Institute, EN-80, Sector V, Salt Lake, Bidhan Nagar, Kolkata, West Bengal, 700091, India
| | - Y V Suseela
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, Karnataka, 560064, India
| | - Tanaya Roychowdhury
- Department of Cancer Biology and Inflammatory Disorder, IICB, Kolkata, West Bengal, India
| | - Nilanjan Banerjee
- Department of Biological Sciences, Unified Academic Campus, Bose Institute, EN-80, Sector V, Salt Lake, Bidhan Nagar, Kolkata, West Bengal, 700091, India
| | - Ananya Dutta
- Department of Biological Sciences, Unified Academic Campus, Bose Institute, EN-80, Sector V, Salt Lake, Bidhan Nagar, Kolkata, West Bengal, 700091, India
| | - Satyajit Halder
- Department of Biological Sciences, Unified Academic Campus, Bose Institute, EN-80, Sector V, Salt Lake, Bidhan Nagar, Kolkata, West Bengal, 700091, India
| | - Kuladip Jana
- Department of Biological Sciences, Unified Academic Campus, Bose Institute, EN-80, Sector V, Salt Lake, Bidhan Nagar, Kolkata, West Bengal, 700091, India
| | - Gopeswar Mukherjee
- Barasat Cancer Research and Welfare Centre, Barasat, Kolkata, West Bengal, India
| | - Samit Chattopadhyay
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS) Pilani, K. K. Birla Goa Campus, Goa, 403726, India
| | - Thimmaiah Govindaraju
- Bioorganic Chemistry Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P.O., Bengaluru, Karnataka, 560064, India.
| | - Subhrangsu Chatterjee
- Department of Biological Sciences, Unified Academic Campus, Bose Institute, EN-80, Sector V, Salt Lake, Bidhan Nagar, Kolkata, West Bengal, 700091, India.
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Li S, Hu J, Li G, Mai H, Gao Y, Liang B, Wu H, Guo J, Duan Y. Epigenetic regulation of LINC01270 in breast cancer progression by mediating LAMA2 promoter methylation and MAPK signaling pathway. Cell Biol Toxicol 2023; 39:1359-1375. [PMID: 36241925 DOI: 10.1007/s10565-022-09763-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 08/26/2022] [Indexed: 11/02/2022]
Abstract
Application of long non-coding RNAs (lncRNAs) for modulation of breast cancer (BC) has attracted much attention. Here, we probed into the role and underlying mechanism of long intergenic non-coding RNA 01270 (LINC01270) in BC. With the help of bioinformatics tools, we identified laminin subunit alpha 2 (LAMA2) as a BC-related differentially expressed gene to discern the effect of LAMA2 in BC cells. LAMA2 was initially poorly expressed while LINC01270 was highly expressed in BC. BC cells were subsequently treated with sh-LINC01270 or/and sh-LAMA2 for exploration of their regulatory mechanism in BC, which unfolded that LINC01270 inhibition up-regulated LAMA2 and inactivated the MAPK signaling pathway to suppress malignant characteristics of BC cells. Functional assays demonstrated that LINC01270 bound to DNMT1, DNMT3a, and DNMT3b promoted the methylation of CpG islands in LAMA2 promoter and inhibited the LAMA2 expression. Moreover, our data suggested that LAMA2 suppressed MAPK signaling pathway to inhibit BC cell malignant characteristics. The in vitro results were re-produced with the help of the in vivo experimentations. In conclusion, LINC01270 silencing inhibited the methylation of LAMA2 promoter to suppress the activation of MAPK signaling pathway, which subsequently restrained the BC progression. 1, Overexpression of LAMA2 inhibits malignant features of BC cells. 2, LINC01270 promotes LAMA2 promoter methylation by recruiting DNMTs to the LAMA2 promoter region. 3, 5-aza-dc reverses the promotion of LAMA2 promoter methylation by LINC01270. 4, LAMA2 inhibits malignant features of BC cells by suppressing the activation of MAPK signaling pathway.
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Affiliation(s)
- Shaoying Li
- Department of Thyroid and Breast Surgery, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518000, Guangdong Province, People's Republic of China.
| | - Jiamei Hu
- Department of Thyroid and Breast Surgery, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518000, Guangdong Province, People's Republic of China
| | - Guisen Li
- Department of Thyroid and Breast Surgery, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518000, Guangdong Province, People's Republic of China
| | - Huifen Mai
- Department of Thyroid and Breast Surgery, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518000, Guangdong Province, People's Republic of China
| | - Yinfei Gao
- Department of Thyroid and Breast Surgery, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518000, Guangdong Province, People's Republic of China
| | - Bichan Liang
- Department of Thyroid and Breast Surgery, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518000, Guangdong Province, People's Republic of China
| | - Huacong Wu
- Department of Thyroid and Breast Surgery, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518000, Guangdong Province, People's Republic of China
| | - Jianling Guo
- Department of Thyroid and Breast Surgery, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518000, Guangdong Province, People's Republic of China
| | - Yuan Duan
- Department of Thyroid and Breast Surgery, Baoan Maternal and Child Health Hospital, Jinan University, Shenzhen, 518000, Guangdong Province, People's Republic of China
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Qi XM, Chen G. p38γ MAPK Inflammatory and Metabolic Signaling in Physiology and Disease. Cells 2023; 12:1674. [PMID: 37443708 PMCID: PMC10341180 DOI: 10.3390/cells12131674] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/12/2023] [Accepted: 06/17/2023] [Indexed: 07/15/2023] Open
Abstract
p38γ MAPK (also called ERK6 or SAPK3) is a family member of stress-activated MAPKs and has common and specific roles as compared to other p38 proteins in signal transduction. Recent studies showed that, in addition to inflammation, p38γ metabolic signaling is involved in physiological exercise and in pathogenesis of cancer, diabetes, and Alzheimer's disease, indicating its potential as a therapeutic target. p38γphosphorylates at least 19 substrates through which p38γ activity is further modified to regulate life-important cellular processes such as proliferation, differentiation, cell death, and transformation, thereby impacting biological outcomes of p38γ-driven pathogenesis. P38γ signaling is characterized by its unique reciprocal regulation with its specific phosphatase PTPH1 and by its direct binding to promoter DNAs, leading to transcriptional activation of targets including cancer-like stem cell drivers. This paper will review recent findings about p38γ inflammation and metabolic signaling in physiology and diseases. Moreover, we will discuss the progress in the development of p38γ-specific pharmacological inhibitors for therapeutic intervention in disease prevention and treatment by targeting the p38γ signaling network.
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Affiliation(s)
- Xiao-Mei Qi
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
| | - Guan Chen
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI 53226, USA
- Research Service, Clement J. Zablocki Veterans Affairs Medical Center, Milwaukee, WI 53295, USA
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Yang R, Duan C, Zhang S, Liu Y, Zhang Y. Prolactin Regulates Ovine Ovarian Granulosa Cell Apoptosis by Affecting the Expression of MAPK12 Gene. Int J Mol Sci 2023; 24:10269. [PMID: 37373417 DOI: 10.3390/ijms241210269] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/14/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
Prolactin (PRL) has been reported to influence reproductive performance and cell apoptosis. However, its mechanism remains unclear. Hence, in the present study, ovine ovarian granulosa cells (GCs) were used as a cell model to investigate the relationship between PRL concentration and GC apoptosis, as well as its possible mechanisms. We examined the relationship between serum PRL concentration and follicle counts in sexually mature ewes. GCs were isolated from adult ewes and treated with different concentrations of PRL, while 500 ng/mL PRL was selected as the high concentration of prolactin (HPC). Then, we applied the transcriptome sequencing (RNA-Seq) combined with a gene editing approach to explore the HPC contributing to cell apoptosis and steroid hormones. The apoptosis of GCs gradually increased at PRL concentrations above 20 ng/mL, while 500 ng/mL PRL significantly decreased the secretion of steroid hormones and the expression of L-PRLR and S-PRLR. The results indicated that PRL regulates GC development and steroid hormones mainly through the target gene MAPK12. The expression of MAPK12 was increased after knocked-down L-PRLR and S-PRLR, while it decreased after overexpressed L-PRLR and S-PRLR. Cell apoptosis was inhibited and the secretion of steroid hormones increased after interfering with MAPK12, while the overexpression of MAPK12 showed the opposite trend. Overall, the number of follicles gradually decreased with increasing PRL concentration. HPCs promoted apoptosis and inhibited steroid hormone secretion in GCs by upregulating MAPK12 through reducing L-PRLR and S-PRLR.
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Affiliation(s)
- Ruochen Yang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Chunhui Duan
- College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Shuo Zhang
- College of Animal Science and Technology, China Agricultural University, Beijing 100089, China
| | - Yueqin Liu
- College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China
| | - Yingjie Zhang
- College of Animal Science and Technology, Hebei Agricultural University, Baoding 071000, China
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Xu W, Liu R, Dai Y, Hong S, Dong H, Wang H. The Role of p38γ in Cancer: From review to outlook. Int J Biol Sci 2021; 17:4036-4046. [PMID: 34671218 PMCID: PMC8495394 DOI: 10.7150/ijbs.63537] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 09/16/2021] [Indexed: 01/20/2023] Open
Abstract
p38γ is a member of the p38 Mitogen Activated Protein Kinases (p38 MAPKs). It contains four subtypes in mammalian cells encoded by different genes including p38α (MAPK14), p38β (MAPK11), p38γ (MAPK12), and p38δ (MAPK13). Recent studies revealed that p38γ may exhibit a crucial role in tumorigenesis and cancer aggressiveness. Despite the large number of published literatures, further researches are demanded to clarify its role in cancer development, the tissue-specific function and associated novel treatment strategies. In this article, we provide the latest view on the connection between p38γ and malignant tumors, highlighting the function of p38γ. The clinical value of p38γ is also discussed, helping the translation into the remarkable therapeutic strategy in tumor diseases.
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Affiliation(s)
- Wentao Xu
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China.,First Clinical Medical College of Anhui Medical University, Hefei, 230032, Anhui, China
| | - Rui Liu
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Ying Dai
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China
| | - Shaocheng Hong
- First Clinical Medical College of Anhui Medical University, Hefei, 230032, Anhui, China
| | - Huke Dong
- First Clinical Medical College of Anhui Medical University, Hefei, 230032, Anhui, China
| | - Hua Wang
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei, 230022, Anhui, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Anhui Medical University, Hefei, 230032, Anhui, China
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Wang Z, Huang Y, Chu F, Liao K, Cui Z, Chen J, Tang S. Integrated Analysis of DNA methylation and transcriptome profile to identify key features of age-related macular degeneration. Bioengineered 2021; 12:7061-7078. [PMID: 34569899 PMCID: PMC8806579 DOI: 10.1080/21655979.2021.1976502] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Age-related macular degeneration (AMD) is a common vision-threatening disease. The current study sought to integrate DNA methylation with transcriptome profile to explore key features in AMD. Gene expression data were obtained from the Gene Expression Omnibus (GEO, accession ID: GSE135092) and DNA methylation data were obtained from the ArrayExpress repository (E-MTAB-7183). A total of 456 differentially expressed genes (DEGs) and 4827 intragenic differentially methylated CpGs (DMCs) were identified between AMD and controls. DEGs and DMCs were intersected and 19 epigenetically induced (EI) genes and 15 epigenetically suppressed (ES) genes were identified. Immune cell infiltration analysis was performed to estimate the abundance of different types of immune cell in each sample. Enrichment scores of inflammatory response and tumor necrosis factor-alpha (TNFα) signaling via nuclear factor kappa B (NF-κb) were positively correlated with abundance of activated memory CD4 T cells and M1 macrophages. Subsequently, two significant random forest classifiers were constructed based on DNA methylation and transcriptome data. SMAD2 and NGFR were selected as key genes through functional epigenetic modules (FEM) analysis. Expression level of SMAD2, NGFR and their integrating proteins was validated in hydrogen peroxide (H2O2) and TNFα co-treated retinal pigment epithelium (RPE) in vitro. The findings of the current study showed that local inflammation and systemic inflammatory host response play key roles in pathogenesis of AMD. SMAD2 and NGFR provide new insight in understanding the molecular mechanism and are potential therapeutic targets for development of AMD therapy.
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Affiliation(s)
- Zhijie Wang
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China
| | - Yinhua Huang
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China
| | - Feixue Chu
- Hangzhou Xihu Zhijiang Eye Hospital, Hangzhou, China
| | - Kai Liao
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China
| | | | - Jiansu Chen
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China.,Key Laboratory for Regenerative Medicine, Ministry of Education, Jinan University, Guangzhou, China.,Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, China
| | - Shibo Tang
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China.,Cas Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
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