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SOX2 function in cancers: Association with growth, invasion, stemness and therapy response
Biomed Pharmacother. 2022 Oct 19;156:113860. doi: 10.1016/j.biopha.2022.113860. Online ahead of print.ABSTRACTCancer is a leading cause of death worldwide and around 10 million deaths in 2020 were related to cancer. There are a number of therapeutic modalities for cancer such as chemotherapy, radiotherapy and surgery. However, tumor cells have capacity of developing resistance to chemotherapy and radiotherapy. Genetic mutations participate in development and progression of cancer. The current review focuses on the role of SOX2 transcription factor in cancer. SOX2 has capacity of increasing growth and metastasis of cancer c...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - October 22, 2022 Category: Drugs & Pharmacology Authors: Sepideh Mirzaei Mahshid Deldar Abad Paskeh Maliheh Entezari Seyed Reza Mirmazloomi Aria Hassanpoor Maryam Aboutalebi Shamin Rezaei Elahe Sadat Hejazi Amirabbas Kakavand Hajar Heidari Shokooh Salimimoghadam Afshin Taheriazam Mehrdad Hashemi Saeed Samarghan Source Type: research

EZH2 as a new therapeutic target in brain tumors: Molecular landscape, therapeutic targeting and future prospects
Biomed Pharmacother. 2021 Dec 11;146:112532. doi: 10.1016/j.biopha.2021.112532. Online ahead of print.ABSTRACTBrain tumors are responsible for high mortality and morbidity worldwide. The brain tumor treatment depends on identification of molecular pathways involved in progression and malignancy. Enhancer of zeste homolog 2 (EZH2) has obtained much attention in recent years in field of cancer therapy due to its aberrant expression and capacity in modulating expression of genes by binding to their promoter and affecting methylation status. The present review focuses on EZH2 signaling in brain tumors including glioma, gliobla...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - December 15, 2021 Category: Drugs & Pharmacology Authors: Mahshid Deldar Abad Paskeh Atefeh Mehrabi Mohammad Hossein Gholami Amirhossein Zabolian Ehsan Ranjbar Hossein Saleki Adnan Ranjbar Mehrdad Hashemi Yavuz Nuri Ertas Kiavash Hushmandi Sepideh Mirzaei Milad Ashrafizadeh Ali Zarrabi Saeed Samarghandian Source Type: research

Paclitaxel increases sensitivity of SKOV3 cells to hyperthermia by inhibiting heat shock protein 27.
Abstract Hyperthermic intraperitoneal chemotherapy (HIPEC) is a promising treatment strategy for patients with peritoneal metastasis of ovarian cancer. Heat shock proteins (HSPs) play an important role in cellular stress during HIPEC treatment. The aim of the present study was to investigate whether paclitaxel can exert antitumor effects by inhibiting heat shock protein 27 (HSP27) expression during HIPEC treatment. Cell viability was detected by CCK8 assay. We used Western blot analysis to detect HSP27 expression under hyperthermia conditions with or without paclitaxel in SKOV3 cells. To further examine the role o...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - October 24, 2020 Category: Drugs & Pharmacology Authors: Kong XX, Jiang S, Liu T, Liu GF, Dong M Tags: Biomed Pharmacother Source Type: research

Mirror siRNAs loading for dual delivery of doxorubicin and autophagy regulation siRNA for multidrug reversing chemotherapy.
Abstract The multidrug resistance (MDR) which widely observed in multiple cancer types is responsible for the poor chemotherapy benefits of doxorubicin (Dox). Here in our study, Dox was firstly loaded into a scramble siRNA and then condensed by polyethyleneimine (PEI) 25k together with anti-autophagy siRNA, the obtained PEI/Si-D containing mirror RNAs was further coated with hyaluronic acid (HA) to shield the surface charge of PEI and offer tumor-homing property that finally developed a platform for effective cancer chemotherapy (HP/Si-D). Our results revealed that the obtained HP/Si-D was showed high stability an...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - July 22, 2020 Category: Drugs & Pharmacology Authors: Yang B, Hao A, Chen L Tags: Biomed Pharmacother Source Type: research

GDPD5, a target of miR-195-5p, is associated with metastasis and chemoresistance in colorectal cancer.
CONCLUSION: This study identifies the gene GDPD5 as an effector of chemoresistance and metastasis in CRC. Furthermore, our results demonstrate that miR-195-5p is a potent suppressor of GDPD5 and that, as such, it significantly increases chemosensitivity and apoptosis in chemoresistant CRC cells. This study thus not only identifies potential prognostic biomarkers of CRC, but it also opens the possibility for incorporating miR-195-5p into current therapeutic regimens to overcome barriers to successful CRC treatment. PMID: 29635904 [PubMed - in process]
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - April 14, 2018 Category: Drugs & Pharmacology Authors: Feng C, Zhang L, Sun Y, Li X, Zhan L, Lou Y, Wang Y, Liu L, Zhang Y Tags: Biomed Pharmacother Source Type: research

Suppression of Nrf2 confers chemosensitizing effect through enhanced oxidant-mediated mitochondrial dysfunction.
In this study, we investigated the mechanism of this chemosensitizing effect. MAIN METHODS: KKU-100 cells were used in the study. Nrf2 expression was knocked down by siRNA and expression was validated by reverse transcription and polymerase chain reaction. Cytotoxicity was assessed by sulforhodamine B method. Intracellular reactive oxygen species (ROS) was examined by fluorescent dye, dichlorofluorescin diacetate method and mitochondrial transmembrane potential was assessed by JC1 dye assay. KEY FINDINGS: Cytotoxicity of cisplatin (Cis) in KKU-100 cells was enhanced by knockdown of Nrf2 expression. The enhanced c...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - March 5, 2018 Category: Drugs & Pharmacology Authors: Sompakdee V, Prawan A, Senggunprai L, Kukongviriyapan U, Samathiwat P, Wandee J, Kukongviriyapan V Tags: Biomed Pharmacother Source Type: research

Dual function of programmed cell death 10 (PDCD10) in drug resistance.
Abstract Drug resistance, a major challenge in cancer chemotherapy, is a result of several mechanistic alterations including resistance to apoptosis. Apoptosis is a well-controlled cell death mechanism which is regulated by several signaling pathways. Alterations in structure, function, and expression pattern of the proteins involved in the regulation of apoptosis have been linked to drug resistance. Programmed Cell Death 10 (PDCD10) protein is recently associated with the regulation of cell survival and apoptosis. However, the role of PDCD10 in drug resistance has not been clearly established. Here, we aimed to f...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - February 23, 2018 Category: Drugs & Pharmacology Authors: Urfali-Mamatoglu C, Kazan HH, Gündüz U Tags: Biomed Pharmacother Source Type: research

Cancer-associated fibroblasts confer cisplatin resistance of tongue cancer via autophagy activation.
Abstract Cancer-associated fibroblasts (CAFs) play important roles in carcinogenesis and progression of tongue squamous cell carcinoma (TSCC). However, effect of CAFs on chemotherapy resistance of TSCC remains largely obscure. Here, we cultured the matched primary CAFs and normal fibroblasts (NFs) pairs and detected their roles in cisplatin sensitivity of TSCC, as well as autophagy-related protein LC3 and Beclin1 expressions. During exposure to cisplatin, TSCC with CAFs group exhibited significantly increased cell viability and IC50, but reduced apoptosis than that with NFs group. Meanwhile, cisplatin increased t...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - November 14, 2017 Category: Drugs & Pharmacology Authors: Liao JK, Zhou B, Zhuang XM, Zhuang PL, Zhang DM, Chen WL Tags: Biomed Pharmacother Source Type: research

β-Glucosidase inhibition sensitizes breast cancer to chemotherapy.
Abstract The resistance to therapy is a major clinical challenge for advanced stage breast cancer. Identification of novel potential therapeutic targets is needed to overcome chemoresistance. In this work, we identified a target that was critically involved in breast cancer growth and chemoresistance. We demonstrated that β-glucosidase expression and activity were significantly upregulated in breast cancer tissues and a panel of cell lines compared to normal adjacent breast tissues and cell lines. β-glucosidase overexpression activated PI3K/Akt/mTOR signalling, leading to increased cell growth. In contrast, β-g...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - May 4, 2017 Category: Drugs & Pharmacology Authors: Zhou X, Huang Z, Yang H, Jiang Y, Wei W, Li Q, Mo Q, Liu J Tags: Biomed Pharmacother Source Type: research

HCRP1 regulates proliferation, invasion, and drug resistance via EGFR signaling in prostate cancer.
In this study we examined HCRP1 expression in prostate cancer cell lines via western blotting. Thereafter, we performed CCK-8 assay and matrigel invasion assay after cells were transfected with HCRP1 overexpression plasmid or siRNA. We further investigated the possible mechanism involved in HCRP1's regulation to prostate cancer cell proliferation and invasion. We found that HCRP1 negatively regulates EGFR activity and expression of its downstream proteins. Moreover, we found that HCRP1 is negatively correlated with multi-drug resistant related proteins after cells were treated with paclitaxel, cisplatin or gefitinib, indic...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - April 27, 2017 Category: Drugs & Pharmacology Authors: Sun L, Lü J, Ding S, Bi D, Ding K, Niu Z, Liu P Tags: Biomed Pharmacother Source Type: research

The effects of the long non-coding RNA MALAT-1 regulated autophagy-related signaling pathway on chemotherapy resistance in diffuse large B-cell lymphoma.
CONCLUSION: Our study provides evidence that inhibiting lncRNA MALAT-1 can improve the chemotherapy sensitivity of DLBCL by enhancing autophagy-related proteins. PMID: 28292022 [PubMed - as supplied by publisher]
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - March 7, 2017 Category: Drugs & Pharmacology Authors: Li LJ, Chai Y, Guo XJ, Chu SL, Zhang LS Tags: Biomed Pharmacother Source Type: research

NOX2-ROS-HIF-1 α signaling is critical for the inhibitory effect of oleanolic acid on rectal cancer cell proliferation.
NOX2-ROS-HIF-1α signaling is critical for the inhibitory effect of oleanolic acid on rectal cancer cell proliferation. Biomed Pharmacother. 2016 Dec 06;: Authors: Guo Y, Han B, Luo K, Ren Z, Cai L, Sun L Abstract Rectal cancer is the second leading cause of cancer mortality in the western countries and accounts for 10% incidence and mortality of cancer in the whole world. Drug resistance and severe toxicity severely limited the efficiency of chemotherapy of rectal cancer. Oleanolic acid (OA) is a natural triterpenoid and an aglycone of many saponins. In the present study, we aimed to investigate the ...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - December 5, 2016 Category: Drugs & Pharmacology Authors: Guo Y, Han B, Luo K, Ren Z, Cai L, Sun L Tags: Biomed Pharmacother Source Type: research

Targeting autophagy augments the activity of DHA-E3 to overcome p-gp mediated multi-drug resistance.
In this study, we further evaluated the reversal effect of DHA-E3 on MDR and explored its mechanism of action in vitro. Our findings showed that DHA-E3 significantly potentiated the cytotoxicity of vincristine(VCR) and adriamycin(ADR) in the P-gp over-expressing KB/VCR and A02 cells. The mechanistic study found that DHA-E3 increased the intracellular accumulation of ADR and rhodamine-123 by directly inhibiting the drug-transport activity of P-gp. In the present study, we found that DHA-E3 not only reversed MDR, but also induced autophagy in MDR cancer cells. To determine whether DHA-E3-induced autophagy is an adaptive surv...
Source: Biomedicine and pharmacotherapy = Biomedecine and pharmacotherapie - November 4, 2016 Category: Drugs & Pharmacology Authors: Xi G, Wang M, Sun B, Shaikh AS, Liu Y, Wang W, Lou H, Yuan H Tags: Biomed Pharmacother Source Type: research

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