Cancer Biology & TherapyPub Date : 2024-12-31Epub Date: 2024-11-25DOI: 10.1080/15384047.2024.2432098
Hui Zhang, Jingwen Jiang, Xuewu Chen, Fengting Zhu, Fangfang Fu, Aiying Chen, Lei Fu, Dan Mao
{"title":"Liu-Shen-Wan inhibits PI3K/Akt and TRPV1 signaling alleviating bone cancer pain in rats.","authors":"Hui Zhang, Jingwen Jiang, Xuewu Chen, Fengting Zhu, Fangfang Fu, Aiying Chen, Lei Fu, Dan Mao","doi":"10.1080/15384047.2024.2432098","DOIUrl":"10.1080/15384047.2024.2432098","url":null,"abstract":"<p><p>Patients with advanced-stage cancers often suffer from severe pain caused by bone metastasis and destruction, for which effective treatment options are limited. Liu-Shen-Wan (LSW) is a widely recognized herbal formula utilized for pain relief. This study aims to elucidate the effects of LSW on bone cancer pain (BCP). In this study, the pharmacology of LSW on BCP was screened by network pharmacology. A BCP model was conducted using Walker 256 cells. Paw withdrawal threshold and paw withdrawal latency were employed as measures to assess the pain threshold in rats. The pathways and cell types of LSW against BCP were explored. Next, the impact of LSW on Walker 256 cells was evaluated, and UPLC-MS was utilized to identify the active ingredients of LSW. Furthermore, the effects of the key active ingredient, Bufalin, on the BCP rats were evaluated. There were 275 shared targets between LSW and BCP, which were enriched in neural tissue ligand-receptor interaction pathway. LSW increased pain threshold and decreased inflammatory cytokines levels in BCP rats by inhibiting PI3K/Akt and transient receptor potential vanilloid 1 (TRPV1) signaling through astrocytes and microglia. LY294002 further alleviated BCP in rats, while the effects were reversed after treatment with insulin-like growth factor 1 (IGF-1). Both LSW and its active ingredient Bufalin were shown to inhibit the viability and migration of Walker 256 cells and induce apoptosis. Bufalin appears to be the key active ingredient of LSW and exerts its pain-relieving effects by suppressing PI3K/Akt and TRPV1 signaling in BCP.</p>","PeriodicalId":9536,"journal":{"name":"Cancer Biology & Therapy","volume":"25 1","pages":"2432098"},"PeriodicalIF":4.4,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11601056/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142715493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cancer Biology & TherapyPub Date : 2024-12-31Epub Date: 2024-10-26DOI: 10.1080/15384047.2024.2421578
Diya Liu, Xuehui Wang, Fengyuan Qian, Danrong Ye, Xiaochong Deng, Lin Fang
{"title":"DLAT promotes triple-negative breast cancer progression via YAP1 activation.","authors":"Diya Liu, Xuehui Wang, Fengyuan Qian, Danrong Ye, Xiaochong Deng, Lin Fang","doi":"10.1080/15384047.2024.2421578","DOIUrl":"10.1080/15384047.2024.2421578","url":null,"abstract":"<p><strong>Background: </strong>Breast cancer (BC) is the most prevalent malignant tumor in women globally. Triple-negative breast cancer (TNBC) represents the most malignant and invasive subtype of BC. New therapeutic targets are urgently needed for TNBC owing to its receptor expression characteristics, which render it insensitive to traditional targeted and endocrine therapies for BC. The role and mechanisms of dihydrolipoamide S-acetyltransferase (DLAT) as a crucial molecule in glycometabolism and cuproptosis-related biological processes in tumors remain to be explored.</p><p><strong>Methods: </strong>DLAT expression was investigated using bioinformatics methods and quantitative real-time polymerase chain reaction. Subsequently, the MTT assay, colony formation assay, and migration-invasion assay were performed to validate the effect of DLAT on TNBC cell viability, proliferation, and migration. Cytoplasmic-nuclear separation experiments, western blot analysis, and co-immunoprecipitation assays were performed to elucidate the underlying molecular mechanisms.</p><p><strong>Results: </strong>This study revealed a robust correlation between elevated DLAT expression in BC and unfavorable prognosis in patients, with higher expression of DLAT compared to other subtypes in TNBC. Functional cytology experiments indicated that DLAT plays a tumor-promoting role in TNBC. Mechanistic studies showed that DLAT directly interacts with YAP1, leading to the dephosphorylation and activation of YAP1 and its increased nuclear translocation, thereby transcriptionally activating and regulating downstream oncogenes, promoting the malignant phenotype of TNBC. Rescue experiments indicated that DLAT promotes the malignant behavior of TNBC through a YAP1-dependent pathway.</p><p><strong>Conclusions: </strong>Our research unveiled the significant involvement of DLAT in TNBC, along with the potential for modulating DLAT/YAP1 activity as a targeted treatment strategy for TNBC.</p>","PeriodicalId":9536,"journal":{"name":"Cancer Biology & Therapy","volume":"25 1","pages":"2421578"},"PeriodicalIF":4.4,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11520541/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142495690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cancer Biology & TherapyPub Date : 2024-12-31Epub Date: 2024-11-06DOI: 10.1080/15384047.2024.2424490
Xinxing Duan, Xiong Yu, Jin Gan
{"title":"Extracellular vesicle-packaged miR-4253 secreted by cancer-associated fibroblasts facilitates cell proliferation in gastric cancer by inducing macrophage M2 polarization.","authors":"Xinxing Duan, Xiong Yu, Jin Gan","doi":"10.1080/15384047.2024.2424490","DOIUrl":"10.1080/15384047.2024.2424490","url":null,"abstract":"<p><p>Cancer-associated fibroblasts (CAFs) can interact with macrophages in the tumor microenvironment by secreting extracellular vesicles (EVs), thereby affecting tumor progression. However, the mechanisms of CAF-secreted EVs in gastric cancer (GC) remain not well understood. Here, we investigated the effect of CAF-EVs on macrophage polarization in GC and the underlying mechanisms. Macrophage polarization was evaluated using flow cytometry and quantitative real-time polymerase chain reaction. GC cell proliferation was determined using cell counting kit-8, EdU, and colony formation assays. The molecular mechanism was explored using microarray analysis, dual-luciferase reporter assay, and RNA pull-down analysis. The results showed that CAFs secreted EVs that inhibit macrophage M1 polarization and promote M2 polarization. Moreover, miR-4253 expression was increased in CAF-EVs, and inhibition of miR-4253 reversed the macrophage polarization induced by EVs. IL6R was identified as the target of miR-4253. Additionally, macrophages treated with EVs that encapsulated miR-4253 promote GC cell proliferation. In conclusion, CAF-secreted EVs packaging miR-4253 facilitate macrophage polarization from M1 to M2 phenotype by targeting IL6R, thereby accelerating GC cell proliferation. The findings suggest that EV-encapsulated miR-4253 may be a promising therapeutic target of GC.</p>","PeriodicalId":9536,"journal":{"name":"Cancer Biology & Therapy","volume":"25 1","pages":"2424490"},"PeriodicalIF":4.4,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11542604/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The relationship between long non-coding gene <i>CASC21</i> polymorphisms and cervical cancer.","authors":"Lili Han, Jing Liu, Mireayi Shataer, Chengyong Wu, Mayinuer Niyazi","doi":"10.1080/15384047.2024.2322207","DOIUrl":"10.1080/15384047.2024.2322207","url":null,"abstract":"<p><strong>Background: </strong><i>CASC21</i> was reported to be a hotspot gene in cervical cancer. The relationship between <i>CASC21</i> genetic polymorphisms and cervical cancer has not been reported. Genetic factors influence the occurrence of cervical cancer. Thus, we explored the correlation between <i>CASC21</i> polymorphisms and cervical cancer.</p><p><strong>Methods: </strong>A total of 973 participants within 494 cervical cancer cases and 479 healthy controls were recruited. Five single nucleotide polymorphisms (SNPs) in the <i>CASC21</i> gene were genotyped using the Agena MassARRAY platform. Chi-squared test, logistic regression analysis, odds ratio (OR), multifactor dimensionality reduction (MDR), and 95% confidence interval (95%CI) were used for data analysis.</p><p><strong>Results: </strong>In the overall analysis, rs16902094 (<i>p</i> = .014, OR = 1.86, 95% CI = 1.12-3.08) and rs16902104 (<i>p</i> = .014, OR = 1.86, 95% CI = 1.12-3.09) had the risk-increasing correlation with the occurrence of cervical cancer. Stratification analysis showed that rs16902094 and rs16902104 were still associated with cervical cancer risk in the subgroups with age > 51, BMI < 24 kg/m<sup>2</sup>, smokers, and patients with cervical squamous cell carcinoma. MDR analysis displayed that rs16902094 (.49%) and rs16902104 (.52%) were the main influential attribution factor for cervical cancer risk.</p><p><strong>Conclusion: </strong>Our finding firstly determined that two <i>CASC21</i> SNPs (rs16902094, rs16902104) were associated with an increased risk of cervical cancer, which adds to our knowledge regarding the effect of <i>CASC21</i> on cervical carcinogenesis.</p>","PeriodicalId":9536,"journal":{"name":"Cancer Biology & Therapy","volume":"25 1","pages":"2322207"},"PeriodicalIF":3.6,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10936591/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140093448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The prognostic marker KRT81 is involved in suppressing CD8 + T cells and predicts immunotherapy response for triple-negative breast cancer.","authors":"Zhideng Yan, Zhihui Zhong, Chuanke Shi, Muyin Feng, Xiaoqiang Feng, Tong Liu","doi":"10.1080/15384047.2024.2355705","DOIUrl":"10.1080/15384047.2024.2355705","url":null,"abstract":"<p><p>Triple-negative breast Cancer (TNBC) is an aggressive subtype lacking estrogen, progesterone, and HER2 receptors. Known for limited targeted therapies, it poses challenges and requires personalized treatment strategies. Differential analysis revealed a significant decrease in keratin 81 (KRT81) expression in non-TNBC samples and an increase in TNBC samples, lower KRT81 expression correlated with better TNBC patient outcomes. It emerged as an independent predictive factor for TNBC, with associations found between its expression and clinically relevant features. We further developed a nomogram for survival probability assessment based on Cox regression results, demonstrating its accuracy through calibration curves. Gene annotation analysis indicated that KRT81 is involved in immune-related pathways and tumor cell adhesion. KRT81 is associated with immune cell infiltration of Follicular helper T cells (Tfh) and CD8 + T cells, suggesting its potential impact on the immunological microenvironment. The study delved into KRT81's predictive value for immunotherapy responses, high expression of KRT81 was associated with greater potential for immune evasion. Single-cell RNA sequencing analysis pinpointed KRT81 expression within a specific malignant subtype which was a risk factor for TNBC. Furthermore, KRT81 promoted TNBC cell proliferation, migration, invasion, and adhesion was confirmed by gene knockout or overexpression assay. Co-culture experiments further indicated KRT81's potential role in inhibiting CD8 + T cells, and correlation analysis implied KRT81 was highly correlated with immune checkpoint CD276, providing insights into its involvement in the immune microenvironment via CD276. In conclusion, this comprehensive study positions KRT81 as a promising prognostic marker for predicting tumor progression and immunotherapy responses in TNBC.</p>","PeriodicalId":9536,"journal":{"name":"Cancer Biology & Therapy","volume":"25 1","pages":"2355705"},"PeriodicalIF":4.4,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11123506/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141080856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cancer Biology & TherapyPub Date : 2024-12-31Epub Date: 2024-06-10DOI: 10.1080/15384047.2024.2366451
Jie Zhang, Yao-Tiao Deng, Jie Liu, Lu Gan, Yu Jiang
{"title":"Role of transforming growth factor-β1 pathway in angiogenesis induced by chronic stress in colorectal cancer.","authors":"Jie Zhang, Yao-Tiao Deng, Jie Liu, Lu Gan, Yu Jiang","doi":"10.1080/15384047.2024.2366451","DOIUrl":"10.1080/15384047.2024.2366451","url":null,"abstract":"<p><strong>Background: </strong>Chronic stress can induce stress-related hormones; norepinephrine (NE) is considered to have the highest potential in cancer. NE can stimulate the expression of hypoxia-inducible factor-1α (HIF-1α), which is associated with vascular endothelial growth factor (VEGF) secretion and tumor angiogenesis. However, the underlying mechanisms are poorly understood.</p><p><strong>Methods: </strong>Tumor-bearing mice were subjected to chronic restraint stress and treated with normal saline, human monoclonal VEGF-A neutralizing antibody bevacizumab, or β-adrenergic receptor (β-AR) antagonist (propranolol). Tumor growth and vessel density were also evaluated. Human colorectal adenocarcinoma cells were treated with NE, propranolol, or the inhibitor of transforming growth factor-β (TGF-β) receptor Type I kinase (Ly2157299) <i>in</i> <i>vitro</i>. TGF-β1 in mouse serum and cell culture supernatants was quantified using ELISA. The expression of HIF-1α was measured using Real time-PCR and western blotting. Cell migration and invasion were tested.</p><p><strong>Results: </strong>Chronic restraint stress attenuated the efficacy of bevacizumab and promoted tumor growth and angiogenesis in a colorectal tumor model. Propranolol blocked this effect and inhibited TGF-β1 elevation caused by chronic restraint stress or NE. NE upregulated HIF-1α expression, which was reversed by propranolol or Ly2157299. Propranolol and Ly2157199 blocked NE-stimulated cancer cell migration and invasion.</p><p><strong>Conclusions: </strong>Our results demonstrate the effect of NE on tumor angiogenesis and the critical role of TGF-β1 signaling during this process. In addition, β-AR/TGF-β1 signaling/HIF-1α/VEGF is a potential signaling pathway. This study also indicates that psychosocial stress might be a risk factor which weakens the efficacy of anti-angiogenic therapy.</p>","PeriodicalId":9536,"journal":{"name":"Cancer Biology & Therapy","volume":"25 1","pages":"2366451"},"PeriodicalIF":3.6,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11168221/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141295595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Diagnostic value of <sup>18</sup>F-PSMA-1007 PET/CT for predicting the pathological grade of prostate cancer.","authors":"Xiao-Bo Niu, Yan-Peng Li, Jun Wang, Xiao-Li Mei, Xue-Yan Zhao, Ting-Ting Liu, Sha-Sha Xu, Xing-Min Han, Jing-Liang Cheng","doi":"10.1080/15384047.2023.2287120","DOIUrl":"10.1080/15384047.2023.2287120","url":null,"abstract":"<p><p>This study was designed to evaluate the diagnostic efficacy of relevant parameters of <sup>18</sup>F-prostate-specific membrane antigen (PSMA)-1007 PET/CT in predicting the pathological grade of primary prostate cancer. Briefly, a prospective analysis was performed on 53 patients diagnosed with prostate cancer by systematic puncture biopsy, followed by <sup>18</sup>F-PSMA-1007 PET/CT examination prior to treatment within 10 d. The patients were grouped in accordance with the Gleason grading system revised by the International Association of Urology Pathology (ISUP). They were divided into high-grade group (ISUP 4-5 group) and low-grade group (ISUP 1-3 group). The differences in maximum standardized uptake value (SUVmax), tumor-to-background ratio (TBR), intraprostatic PSMA-derived tumor volume (iPSMA-TV), and intraprostatic total lesion PSMA (iTL-PSMA) between the high- and low-grade group were statistically significant (<i>p</i> < .001). No significant difference was found for mean standardized uptake value (SUVmean) between the high- and low-grade groups (Z = -1.131, <i>p</i> = .258). Besides, binary multivariate logistic regression analysis showed that only iPSMA-TV and iTL-PSMA were independent predictors of the pathological grading, for which the odds ratios were 18.821 [95% confidence interval (CI): 2.040-173.614, <i>p</i> = .010] and 0.758 (95% CI: 0.613-0.938, <i>p</i> = .011), respectively. The area under the ROC of this regression model was 0.983 (95% CI: 0.958-1.00, <i>p</i> < .001). Only iTL-PSMA was a significant parameter for distinguishing ISUP-4 and ISUP-5 groups (Z = -2.043, <i>p</i> = .041). In a nutshell, <sup>18</sup>F-PSMA-1007 PET/CT has good application value in predicting the histopathological grade of primary prostate cancer. Three-dimensional volume metabolism parameters iPSMA-TV and iTL-PSMA were found to be independent predictors for pathological grade.</p>","PeriodicalId":9536,"journal":{"name":"Cancer Biology & Therapy","volume":"25 1","pages":"2287120"},"PeriodicalIF":3.6,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10761109/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138797833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cancer Biology & TherapyPub Date : 2024-12-31Epub Date: 2024-03-23DOI: 10.1080/15384047.2024.2332000
Hannah M Hicks, Veronica L Nassar, Jane Lund, Madison M Rose, Rebecca E Schweppe
{"title":"The effects of Aurora Kinase inhibition on thyroid cancer growth and sensitivity to MAPK-directed therapies.","authors":"Hannah M Hicks, Veronica L Nassar, Jane Lund, Madison M Rose, Rebecca E Schweppe","doi":"10.1080/15384047.2024.2332000","DOIUrl":"10.1080/15384047.2024.2332000","url":null,"abstract":"<p><p>Thyroid cancer is one of the deadliest endocrine cancers, and its incidence has been increasing. While mutations in <i>BRAF</i> are common in thyroid cancer, advanced PTC patients currently lack therapeutic options targeting the MAPK pathway, and despite the approved combination of BRAF and MEK1/2 inhibition for <i>BRAF-</i>mutant ATC, resistance often occurs. Here, we assess growth and signaling responses to combined BRAF and MEK1/2 inhibition in a panel of <i>BRAF-</i>mutant thyroid cancer cell lines. We first showed that combined BRAF and MEK1/2 inhibition synergistically inhibits cell growth in four out of six of the -<i>BRAF</i>-mutant thyroid cancer cell lines tested. Western blotting showed that the MAPK pathway was robustly inhibited in all cell lines. Therefore, to identify potential mechanisms of resistance, we performed RNA-sequencing in cells sensitive or resistant to MEK1/2 inhibition. In response to MEK1/2 inhibition, we identified a downregulation of Aurora Kinase B (AURKB) in sensitive but not resistant cells. We further demonstrated that combined MEK1/2 and AURKB inhibition slowed cell growth, which was phenocopied by inhibiting AURKB and ERK1/2. Finally, we show that combined AURKB and ERK1/2 inhibition induces apoptosis in <i>BRAF-</i>mutant thyroid cancer cell lines, together suggesting a potential combination therapy for <i>BRAF</i>-mutant thyroid cancer patients.</p>","PeriodicalId":9536,"journal":{"name":"Cancer Biology & Therapy","volume":"25 1","pages":"2332000"},"PeriodicalIF":3.6,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10962586/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140193439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cancer Biology & TherapyPub Date : 2024-12-31Epub Date: 2024-03-06DOI: 10.1080/15384047.2024.2317999
Samatha M Jain, Shruthi Nagainallur Ravichandran, Makalakshmi Murali Kumar, Antara Banerjee, Alexander Sun-Zhang, Hong Zhang, Rupak Pathak, Xiao-Feng Sun, Surajit Pathak
{"title":"Understanding the molecular mechanism responsible for developing therapeutic radiation-induced radioresistance of rectal cancer and improving the clinical outcomes of radiotherapy - A review.","authors":"Samatha M Jain, Shruthi Nagainallur Ravichandran, Makalakshmi Murali Kumar, Antara Banerjee, Alexander Sun-Zhang, Hong Zhang, Rupak Pathak, Xiao-Feng Sun, Surajit Pathak","doi":"10.1080/15384047.2024.2317999","DOIUrl":"10.1080/15384047.2024.2317999","url":null,"abstract":"<p><p>Rectal cancer accounts for the second highest cancer-related mortality, which is predominant in Western civilizations. The treatment for rectal cancers includes surgery, radiotherapy, chemotherapy, and immunotherapy. Radiotherapy, specifically external beam radiation therapy, is the most common way to treat rectal cancer because radiation not only limits cancer progression but also significantly reduces the risk of local recurrence. However, therapeutic radiation-induced radioresistance to rectal cancer cells and toxicity to normal tissues are major drawbacks. Therefore, understanding the mechanistic basis of developing radioresistance during and after radiation therapy would provide crucial insight to improve clinical outcomes of radiation therapy for rectal cancer patients. Studies by various groups have shown that radiotherapy-mediated changes in the tumor microenvironment play a crucial role in developing radioresistance. Therapeutic radiation-induced hypoxia and functional alterations in the stromal cells, specifically tumor-associated macrophage (TAM) and cancer-associated fibroblasts (CAF), play a crucial role in developing radioresistance. In addition, signaling pathways, such as - the PI3K/AKT pathway, Wnt/β-catenin signaling, and the hippo pathway, modulate the radiation responsiveness of cancer cells. Different radiosensitizers, such as small molecules, microRNA, nanomaterials, and natural and chemical sensitizers, are being used to increase the effectiveness of radiotherapy. This review highlights the mechanism responsible for developing radioresistance of rectal cancer following radiotherapy and potential strategies to enhance the effectiveness of radiotherapy for better management of rectal cancer.</p>","PeriodicalId":9536,"journal":{"name":"Cancer Biology & Therapy","volume":"25 1","pages":"2317999"},"PeriodicalIF":3.6,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10936619/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140038777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}