1
|
Tang S, Liu D, Fang Y, Yong L, Zhang Y, Guan M, Lin X, Wang H, Cai F. Low expression of HIF1AN accompanied by less immune infiltration is associated with poor prognosis in breast cancer. Front Oncol 2023; 13:1080910. [PMID: 36816977 PMCID: PMC9932925 DOI: 10.3389/fonc.2023.1080910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 01/09/2023] [Indexed: 02/05/2023] Open
Abstract
Background Hypoxia-inducible factor 1-alpha (HIF-1α) stability and transcriptional action are reduced by the hypoxia-inducible factor 1-alpha subunit suppressor (HIF1AN). Its inappropriate expression is associated with the development of cancer and immune control. It is yet unknown how HIF1AN, clinical outcomes, and immune involvement in breast cancer (BC) are related. Methods Using the GEPIA, UALCAN, TIMER, Kaplan-Meier plotter, and TISIDB datasets, a thorough analysis of HIF1AN differential expression, medical prognosis, and the relationship between HIF1AN and tumor-infiltrating immune cells in BC was conducted. Quantitative real-time PCR (qRT-PCR) analysis of BC cells were used for external validation. Results The findings revealed that, as compared to standard specimens, BC cells had significantly lower levels of HIF1AN expression. Good overall survival (OS) for BC was associated with higher HIF1AN expression. Additionally, in BC, the expression of HIF1AN was closely associated with the chemokines and immune cell infiltration, including neutrophils, macrophages, T helper cells, B cells, Tregs, monocytes, dendritic cells, and NK cells. A high correlation between HIF1AN expression and several immunological indicators of T-cell exhaustion was particularly revealed by the bioinformatic study. Conclusions HIF1AN is a predictive indicator for breast tumors, and it is useful for predicting survival rates.
Collapse
Affiliation(s)
- Shasha Tang
- Department of Breast Surgery, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Dongyang Liu
- Department of Breast Surgery, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yuan Fang
- Department of Breast Surgery, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Liyun Yong
- Department of Breast Surgery, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yi Zhang
- Department of Breast Surgery, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Mengying Guan
- Department of Breast Surgery, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xiaoyan Lin
- Department of Breast Surgery, Yangpu Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Hui Wang
- Laboratory of Tumor Molecular Biology, School of Basic Medical Sciences, Shanghai University of Medicine and Health Sciences, Shanghai, China,*Correspondence: Fengfeng Cai, ; Hui Wang,
| | - Fengfeng Cai
- Department of Breast Surgery, Tongji Hospital, School of Medicine, Tongji University, Shanghai, China,*Correspondence: Fengfeng Cai, ; Hui Wang,
| |
Collapse
|
2
|
Kermouni Serradj N, Messadi M, Lazzouni S. Classification of Mammographic ROI for Microcalcification Detection Using Multifractal Approach. J Digit Imaging 2022; 35:1544-1559. [PMID: 35854037 DOI: 10.1007/s10278-022-00677-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 04/12/2022] [Accepted: 06/21/2022] [Indexed: 10/17/2022] Open
Abstract
Microcalcifications (MCs) are the main signs of precancerous cells. The development of aided-system for their detection has become a challenge for researchers in this field. In this paper, we propose a system for MCs detection based on the multifractal approach that classifies mammographic ROIs into normal (healthy) or abnormal ROIs containing MCs. The proposed method is divided into four main steps: a mammogram pre-processing step based on breast selection, breast density reduction using haze removal algorithm and contrast enhancement using multifractal measures. The second step consists of extracting the normal and abnormal ROIs and calculating the multifractal spectrum of each ROI. The next step represents the extraction of the multifractal features from the multifractal spectrum and the GLCM characteristics of each ROI. The last step is the classification of ROIs where three classifiers are tested (KNN, DT, and SVM). The system is evaluated on images from the INbreast database (308 images) with a total of 2688 extracted ROIs (1344 normal, 1344 with MC) from different BI-RADS classes. In this study, the SVM classifier gave the best classification results with a sensitivity, specificity, and precision of 98.66%, 97.77%, and 98.20% respectively. These results are very satisfactory and remarkable compared to the literature.
Collapse
Affiliation(s)
- Nadia Kermouni Serradj
- Biomedical Engineering Laboratory, Faculty of Technology, Abou Bekr Belkaid University, 13000, Tlemcen, Algeria.
| | - Mahammed Messadi
- Biomedical Engineering Laboratory, Faculty of Technology, Abou Bekr Belkaid University, 13000, Tlemcen, Algeria
| | - Sihem Lazzouni
- Biomedical Engineering Laboratory, Faculty of Technology, Abou Bekr Belkaid University, 13000, Tlemcen, Algeria
| |
Collapse
|
3
|
Hu S. Research on Data Acquisition Algorithms Based on Image Processing and Artificial Intelligence. INT J PATTERN RECOGN 2019. [DOI: 10.1142/s0218001420540166] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
At present, image recognition processing technology has been playing a decisive role in the field of pattern recognition, of which automatic recognition of bank notes is an important research topic. Due to the limitation of the size of bill layout and printing method, many invoice layouts are not clear, skewed or distorted, and even there are irregular handwritten signature contents, which lead to the problem of recognition of digital characters on bill surface. In this regard, this paper proposes a data acquisition and recognition algorithm based on improved BP neural network for ticket number identification, which is based on the theory of image processing and recognition, combined with improved bill information recognition technology. First, in the pre-processing stage of bill image, denoising and graying of bill image are processed. After binarization of bill image, the tilt detection method based on Bresenham integer algorithm is used to correct the tilted bill image. Secondly, character localization and feature extraction are carried out for par characters, and the target background is separated from the interference background in order to extract the desired target characters. Finally, the improved BP neural network-based bill digit data acquisition and recognition algorithm is used to realize the classification and recognition of bill characters. The experimental results show that the improved method has better classification and recognition effect than other data acquisition and recognition algorithms.
Collapse
Affiliation(s)
- Shuyu Hu
- Department of Finance, Economics and Commerce, Hunan Radio and TV University, Changsha, P. R. China
| |
Collapse
|