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Öğe Cervical cancer progression is regulated by SOX transcription factors: Revealing signaling networks and therapeutic strategies(Elsevier Science, 2021) Paskeh, Mahshid Deldar Abad; Mirzaei, Sepideh; Gholami, Mohammad Hossein; Zarrabi, Ali; Zabolian, Amirhossein; Hashemi, Mehrdad; Hushmandi, KiavashCervical cancer is the fourth common gynecologic cancer and is considered as second leading cause of death among women. Various strategies are applied in treatment of cervical cancer including radiotherapy, chemotherapy and surgery. However, cervical cancer cells demonstrate aggressive behavior in advanced phases, requiring novel strategies in their elimination. On the other hand, SOX proteins are transcription factors capable of regulating different molecular pathways and their expression varies during embryogenesis, disease development and carcinogenesis. In the present review, our aim is to reveal role of SOX transcription factors in cervical cancer. SOX transcription factors play like a double-edged sword in cancer. For instance, SOX9 possesses both tumor-suppressor and tumor-promoting role in cervical cancer. Therefore, exact role of each SOX members in cervical cancer has been discussed to direct further experiments for revealing other functions. SOX proteins can regulate proliferation and metastasis of cervical cancer cells. Furthermore, response of cervical cancer cells to chemotherapy and radiotherapy is tightly regulated by SOX transcription factors. Different downstream targets of SOX proteins such as Wnt signaling, EMT and Hedgehog have been identified. Besides, upstream mediators such as microRNAs, lncRNAs and circRNAs can regulate SOX expression in cervical cancer. In addition to pre-clinical studies, role of SOX transcription factors as prognostic and diagnostic tools in cervical cancer has been shown.Öğe Chitosan-based nanoscale systems for doxorubicin delivery: Exploring biomedical application in cancer therapy(AICHE Online Library, 2022) Ashrafizadeh, Milad; Hushmandi, Kiavash; Mirzaei, Sepideh; Bokaie, Saied; Bigham, Ashkan; Makvandi, Pooyan; Rabiee, Navid; Thakur, Vijay Kumar; Kumar, Alan Prem; Sharifi, Esmaeel; Varma, Rajender S.; Aref, Amir Reza; Wojnilowicz, Marcin; Zarrabi, Ali; Karimi-Maleh, Hassan; Voelcker, Nicolas H.; Mostafavi, Ebrahim; Orive, GorkaGreen chemistry has been a growing multidisciplinary field in recent years showing great promise in biomedical applications, especially for cancer therapy. Chitosan (CS) is an abundant biopolymer derived from chitin and is present in insects and fungi. This polysaccharide has favorable characteristics, including biocompatibility, biodegradability, and ease of modification by enzymes and chemicals. CS-based nanoparticles (CS-NPs) have shown potential in the treatment of cancer and other diseases, affording targeted delivery and overcoming drug resistance. The current review emphasizes on the application of CS-NPs for the delivery of a chemotherapeutic agent, doxorubicin (DOX), in cancer therapy as they promote internalization of DOX in cancer cells and prevent the activity of P-glycoprotein (P-gp) to reverse drug resistance. These nanoarchitectures can provide co-delivery of DOX with antitumor agents such as curcumin and cisplatin to induce synergistic cancer therapy. Furthermore, co-loading of DOX with siRNA, shRNA, and miRNA can suppress tumor progression and provide chemosensitivity. Various nanostructures, including lipid-, carbon-, polymeric- and metal-based nanoparticles, are modifiable with CS for DOX delivery, while functionalization of CS-NPs with ligands such as hyaluronic acid promotes selectivity toward tumor cells and prevents DOX resistance. The CS-NPs demonstrate high encapsulation efficiency and due to protonation of amine groups of CS, pH-sensitive release of DOX can occur. Furthermore, redox- and light-responsive CS-NPs have been prepared for DOX delivery in cancer treatment. Leveraging these characteristics and in view of the biocompatibility of CS-NPs, we expect to soon see significant progress towards clinical translation.Öğe Correction: The long and short non-coding RNAs modulating EZH2 signaling in cancer (Journal of Hematology & Oncology, (2022), 15, 1, (18), 10.1186/s13045-022-01235-1)(BioMed Central Ltd, 2022) Mirzaei, Sepideh; Gholami, Mohammad Hossein; Hushmandi, Kiavash; Hashemi, Farid; Zabolian, Amirhossein; Canadas, Israel; Zarrabi, Ali; Nabavi, Noushin; Aref, Amir Reza; Crea, Francesco; Wang, Yuzhuo; Ashrafizadeh, Milad; Kumar, Alan PremThe original article [1] contained an error in co-author, Farid Hashemi’s name which has since been corrected. © 2022, The Author(s).Öğe Doxorubicin-loaded graphene oxide nanocomposites in cancer medicine: stimuli-responsive carriers, co-delivery and suppressing resistance(2022) Ashrafizadeh, Milad; Saebfar, Hamidreza; Gholami, Mohammad Hossein; Hushmandi, Kiavash; Zabolian, Amirhossein; Zarrabi, AliIntroduction: The application of doxorubicin (DOX) in cancer therapy has been limited due to its drug resistance and poor internalization. Graphene oxide (GO) nanostructures have the capacity for DOX delivery while promoting its cytotoxicity in cancer. Areas covered: The favorable characteristics of GO nanocomposites, preparation method, and application in cancer therapy are described. Then, DOX resistance in cancer is discussed. The GO-mediated photothermal therapy and DOX delivery for cancer suppression are described. Preparation of stimuli-responsive GO nanocomposites, surface functionalization, hybrid nanoparticles, and theranostic applications are emphasized in DOX chemotherapy. Expert opinion: Graphene oxide nanoparticle-based photothermal therapy maximizes the anti-cancer activity of DOX against cancer cells. Apart from DOX delivery, GO nanomaterials are capable of loading anti-cancer agents and genetic tools to minimize drug resistance and enhance the cytolytic impact of DOX in cancer eradication. To enhance DOX accumulation in cancer cells, stimuli-responsive (redox-, light-, enzyme- and pH-sensitive) GO nanoparticles have been developed for DOX delivery. Further development of targeted delivery of DOX-loaded GO nanomaterials against cancer cells may be achieved by surface modification of polymers such as polyethylene glycol, hyaluronic acid, and chitosan. Doxorubicin-loaded GO nanoparticles have demonstrated theranostic potential for simultaneous diagnosis and therapy. Hybridization of GO with other nanocarriers such as silica and gold nanoparticles further broadens their potential anti-cancer therapy applications.Öğe Gene regulation by antisense transcription: a focus on neurological and cancer diseases(Science Direct, 2022) Najaf, Sajad; Tan, Shing Cheng; Raee, Pourya; Rahmati, Yazdan; Asemani, Yahya; Lee, E. Hui Clarissa; Hushmandi, Kiavash; Aref, Amir RezaAdvances in high-throughput sequencing over the past decades have led to the identification of thousands of non-coding RNAs (ncRNAs), which play a major role in regulating gene expression. One emerging class of ncRNAs is the natural antisense transcripts (NATs), the RNA molecules transcribed from the opposite strand of a protein-coding gene locus. NATs are known to concordantly and discordantly regulate gene expression in both cis and trans manners at the transcriptional, post-transcriptional, translational, and epigenetic levels. Aberrant expression of NATs can therefore cause dysregulation in many biological pathways and has been observed in many genetic diseases. This review outlines the involvements and mechanisms of NATs in the pathogenesis of various diseases, with a special emphasis on neurodegenerative diseases and cancer. We also summarize recent findings on NAT knockdown and/or overexpression experiments and discuss the potential of NATs as promising targets for future gene therapies.Öğe The long and short non-coding RNAs modulating EZH2 signaling in cancer(2022) Mirzaei, Sepideh; Gholami, Mohammad Hossein; Hushmandi, Kiavash; Hshemi, Farid; Zabolian, Amirhossein; Canadas, Israel; Zarrabi, Ali; Nabavi, Noushin; Aref, Amir Reza; Crea, Francesco; Wang, Yuzhuo; Ashrafizadeh, Milad; Kumar, Alan PremNon-coding RNAs (ncRNAs) are a large family of RNA molecules with no capability in encoding proteins. However, they participate in developmental and biological processes and their abnormal expression affects cancer progression. These RNA molecules can function as upstream mediators of different signaling pathways and enhancer of zeste homolog 2 (EZH2) is among them. Briefly, EZH2 belongs to PRCs family and can exert functional roles in cells due to its methyltransferase activity. EZH2 affects gene expression via inducing H3K27me3. In the present review, our aim is to provide a mechanistic discussion of ncRNAs role in regulating EZH2 expression in different cancers. MiRNAs can dually induce/inhibit EZH2 in cancer cells to affect downstream targets such as Wnt, STAT3 and EMT. Furthermore, miRNAs can regulate therapy response of cancer cells via affecting EZH2 signaling. It is noteworthy that EZH2 can reduce miRNA expression by binding to promoter and exerting its methyltransferase activity. Small-interfering RNA (siRNA) and short-hairpin RNA (shRNA) are synthetic, short ncRNAs capable of reducing EZH2 expression and suppressing cancer progression. LncRNAs mainly regulate EZH2 expression via targeting miRNAs. Furthermore, lncRNAs induce EZH2 by modulating miRNA expression. Circular RNAs (CircRNAs), like lncRNAs, affect EZH2 expression via targeting miRNAs. These areas are discussed in the present review with a focus on molecular pathways leading to clinical translation.Öğe Long non-coding RNAs and exosomal incRNAs: Potential functions in lung cancer progression, drug resistance and tumor microenvironment remodeling(Elsevier Science, 2022) Entezari, Maliheh; Ghanbarirad, Maryam; Taheriazam, Afshin; Sadrkhanloo, Mehrdokht; Zabolian, Amirhossein; Shekhi Beig Goharrizi, Mohammad Ali; Hushmandi, Kiavash; Aref, Amir Reza; Ashrafizadeh, Milad; Zarrabi, Ali; Nabavi, Noushin; Rabiee, Navid; Hashemi, Mehrdad; Samarghandian, SaeedAmong the different kinds of tumors threatening human life, lung cancer is one that is commonly observed in both males and females. The aggressive behavior of lung cancer and interactions occurring in tumor microenvironment enhances the malignancy of this tumor. The lung tumor cells have demonstrated capacity in developing chemo- and radio-resistance. LncRNAs are a category of non-coding RNAs that do not encode proteins, but their aberrant expression is responsible for tumor development, especially lung cancer. In the present review, we focus on both lncRNAs and exosomal lncRNAs in lung cancer, and their ability in regulating proliferation and metastasis. Cell cycle progression and molecular mechanisms related to lung cancer metastasis such as EMT and MMPs are regulated by lncRNAs. LncRNAs interact with miRNAs, STAT, Wnt, EZH2, PTEN and PI3K/Akt signaling pathways to affect progression of lung cancer cells. LncRNAs demonstrate both tumor-suppressor and tumor-promoting functions in lung cancer. They can be considered as biomarkers in lung cancer and especially exosomal lncRNAs present in body fluids are potential tools for minimally invasive diagnosis. Furthermore, weÖğe Long non-coding RNAs and exosomal lncRNAs: Potential functions in lung cancer progression, drug resistance and tumor microenvironment remodeling(Elsevier, 2022) Entezari, Maliheh; Ghanbarirad, Maryam; Taheriazam, Afshin; Sadrkhanloo, Mehrdokht; Zabolian, Amirhossein; Goharrizi, Mohammad Ali Shekhi Beig; Hushmandi, Kiavash; Aref, Amir Reza; Ashrafizadeh, Milad; Zarrabi, Ali; Nabavi, Noushin; Rabiee, Navid; Hashemi, Mehrdad; Samarghandian, SaeedAmong the different kinds of tumors threatening human life, lung cancer is one that is commonly observed in both males and females. The aggressive behavior of lung cancer and interactions occurring in tumor microenvironment enhances the malignancy of this tumor. The lung tumor cells have demonstrated capacity in developing chemo- and radio-resistance. LncRNAs are a category of non-coding RNAs that do not encode proteins, but their aberrant expression is responsible for tumor development, especially lung cancer. In the present review, we focus on both lncRNAs and exosomal lncRNAs in lung cancer, and their ability in regulating proliferation and metastasis. Cell cycle progression and molecular mechanisms related to lung cancer metastasis such as EMT and MMPs are regulated by lncRNAs. LncRNAs interact with miRNAs, STAT, Wnt, EZH2, PTEN and PI3K/Akt signaling pathways to affect progression of lung cancer cells. LncRNAs demonstrate both tumor-suppressor and tumor-promoting functions in lung cancer. They can be considered as biomarkers in lung cancer and especially exosomal lncRNAs present in body fluids are potential tools for minimally invasive diagnosis. Furthermore, we discuss regulation of lncRNAs by anti-cancer drugs and genetic tools as well as the role of these factors in therapy response of lung cancer cells.Öğe Long noncoding RNAs: A novel insight in the leukemogenesis and drug resistance in acute myeloid leukemia(Wiley-Blackwell, 2021) Kirtonia, Anuradha; Ashrafizadeh, Milad; Hushmandi, Kiavash; Zabolian, Amirhossein; Bejandi, Atefe K.; Rani, Reshma; Pandey, Amit K.; Baligar, Prakash; Kumar, Vinit; Das, Bhudev C.; Garg, ManojAcute myeloid leukemia (AML) is a common hematological disorder with heterogeneous nature that resulted from blocked myeloid differentiation and an enhanced number of immature myeloid progenitors. During several decades, different factors, including cytogenetic, genetic, and epigenetic have been reported to contribute to the pathogenesis of AML by inhibiting the differentiation and ensuring the proliferation of myeloid blast cells. Recently, long noncoding RNAs (lncRNAs) have been considered as potential diagnostic, therapeutic, and prognostic factors in different human malignancies including AML. Altered expression of lncRNAs is correlated with the transformation of hematopoietic stem and progenitor cells into leukemic blast cells because of their distinct role in the key cellular processes. We discuss the significant role of lncRNAs in the proliferation, survival, differentiation, leukemic stem cells in AML and their involvement in different molecular pathways (insulin-like growth factor type I receptor, FLT3, c-KIT, Wnt, phosphatidylinositol 3-kinase/protein kinase-B, microRNAs), and associated mechanisms such as autophagy, apoptosis, and glucose metabolism. In addition, we aim to highlight the role of lncRNAs as reliable biomarkers for diagnosis, prognosis, and drug resistance for precision medicine in AML.Öğe Molecular landscape of LncRNAs in prostate cancer: A focus on pathways and therapeutic targets for intervention(PMC, 2022) Mirzaei, Sepideh; Abad Paskeh, Mahshid Deldar; Okina, Elena; Gholami, Mohammad Hossein; Hushmandi, Kiavash; Hashemi, Mehrdad; Kalu , Azuma; Zarrabi, Ali; Nabav, Noushin; Rabiee, Navid; Sharifi, Esmaeel; Karimi-Maleh, Hassan; Ashrafizadeh, Milad; Kumar, Alan Prem; Wang, YuzhuoBackground: One of the most malignant tumors in men is prostate cancer that is still incurable due to its heterog? enous and progressive natures. Genetic and epigenetic changes play signifcant roles in its development. The RNA molecules with more than 200 nucleotides in length are known as lncRNAs and these epigenetic factors do not encode protein. They regulate gene expression at transcriptional, post-transcriptional and epigenetic levels. LncRNAs play vital biological functions in cells and in pathological events, hence their expression undergoes dysregulation. Aim of review: The role of epigenetic alterations in prostate cancer development are emphasized here. Therefore, lncRNAs were chosen for this purpose and their expression level and interaction with other signaling networks in prostate cancer progression were examined. Key scientifc concepts of review: The aberrant expression of lncRNAs in prostate cancer has been well-docu? mented and progression rate of tumor cells are regulated via afecting STAT3, NF-?B, Wnt, PI3K/Akt and PTEN, among other molecular pathways. Furthermore, lncRNAs regulate radio-resistance and chemo-resistance features of prostate tumor cells. Overexpression of tumor-promoting lncRNAs such as HOXD-AS1 and CCAT1 can result in drug resistance. Besides, lncRNAs can induce immune evasion of prostate cancer via upregulating PD-1. Pharmacological compounds such as quercetin and curcumin have been applied for targeting lncRNAs. Furthermore, siRNA tool can reduce expression of lncRNAs thereby suppressing prostate cancer progression. Prognosis and diagnosis of prostate tumor at clinical course can be evaluated by lncRNAs. The expression level of exosomal lncRNAs such as lncRNA-p21 can be investigated in serum of prostate cancer patients as a reliable biomarkerÖğe NF-?B as a regulator of cancer metastasis and therapy response: A focus on epithelial-mesenchymal transition(Wiley, 2022) Mirzaei , Sepideh; Saghari, Sam; Bassiri, Farzaneh; Raesi, Rasoul; Zarrabi, Ali; Hushmandi, Kiavash; Sethi, Gautam; Tergaonkar, VinayMetastasis of tumor cells is a complex challenge and significantly diminishes theoverall survival and prognosis of cancer patients. The epithelial?to?mesenchymaltransition (EMT) is a well?known mechanism responsible for the invasiveness oftumor cells. A number of molecular pathways can regulate the EMT mechanism incancer cells and nuclear factor?kappaB (NF??B) is one of them. The nucleartranslocation of NF??B p65 can induce the transcription of several genes involved inEMT induction. The present review describes NF??B and EMT interaction in cancercells and their association in cancer progression. Due to the oncogenic role NF??Bsignaling, its activation enhances metastasis of tumor cells via EMT induction. Thishas been confirmed in various cancers including brain, breast, lung and gastriccancers, among others. The ZEB1/2, transforming growth factor??, and Slug asinducers of EMT undergo upregulation by NF??B to promote metastasis of tumorcells. After EMT induction driven by NF??B, a significant decrease occurs inE?cadherin levels, while N?cadherin and vimentin levels undergo an increase. Thenoncoding RNAs can potentially also function as upstream mediators and modulateNF??B/EMT axis in cancers. Moreover, NF??B/EMT axis is involved in mediatingJ Cell Physiol. 2022;1–26.wileyonlinelibrary.com/journal/jcp© 2022 Wiley Periodicals LLC.|1Abbreviations:AREG, amphiregulin; circRNA, circular RNA; DLC?1, deleted in liver cancer?1; EMT, epithelial?to?mesenchymal transition; EMT?TFs, EMT?inducing transcription factors;FABP5, fatty acid?binding protein 5; GH, growth hormone; IGF1R, insulin like growth factor?1 receptor; IKK, I?B kinase; IL, interleukin; lncRNA, long noncoding RNA; MANF, mesencephalicastrocyte?derived neutrophic factor; miRNA, microRNA; NF??B, nuclear factor?kappaB; NIK, NF??B inducing kinase; SIRTs, sirtuins; SMC4, structural maintenance of chromosome 4;STAT3, signal transducer and activator of transcription 3; TGF??, transforming growth factor??; TLR?4, toll like growth factor?4; TNF, tumor necrosis factor. drug resistance in tumor cells. Thus, suppressing NF??B/EMT axis can also promotethe sensitivity of cancer cells to chemotherapeutic agentsÖğe Non-coding RNAs and macrophage interaction in tumor progression(Elsevier Ireland Ltd, 2022) Entezari, Maliheh; Sadrkhanloo, Mehrdokht; Rashidi, Mohsen; Asnaf, Sholeh Etehad; Taheriazam, Afshin; Hashemi, Mehrdad; Ashrafizadeh, Milad; Zarrabi, Ali; Rabiee, Navid; Hushmandi, Kiavash; Mirzaei, Sepideh; Sethi, GautamThe macrophages are abundantly found in TME and their M2 polarization is in favor of tumor malignancy. On the other hand, non-coding RNAs (ncRNAs) can modulate macrophage polarization in TME to affect cancer progression. The miRNAs can dually induce/suppress M2 polarization of macrophages and by affecting various molecular pathways, they modulate tumor progression and therapy response. The lncRNAs can affect miRNAs via sponging and other molecular pathways to modulate macrophage polarization. A few experiments have also examined role of circRNAs in targeting signaling networks and affecting macrophages. The therapeutic targeting of these ncRNAs can mediate TME remodeling and affect macrophage polarization. Furthermore, exosomal ncRNAs derived from tumor cells or macrophages can modulate polarization and TME remodeling. Suppressing biogenesis and secretion of exosomes can inhibit ncRNA-mediated M2 polarization of macrophages and prevent tumor progression. The ncRNAs, especially exosomal ncRNAs can be considered as non-invasive biomarkers for tumor diagnosis. © 2022 Elsevier B.V.Öğe Non-coding RNAs targeting notch signaling pathway in cancer : from proliferation to cancer therapy resistance(Elsevier B.V., 2022) Hashemi, Mehrdad; Hasani, Sahar; Hajimazdarany, Shima; Mirmazloomi, Seyed Reza; Makvandy, Sara; Zabihi, Abbas; Goldoost, Yeganeh; Gholinia, Nazanin; Kakavand, Amirabbas; Tavakolpournegari, Alireza; Salimimoghadam, Shokooh; Nabavi, Noushin; Zarrabi, Ali; Taheriazam, Afshin; Entezari, Maliheh; Hushmandi, KiavashCancer is a challenging to treat disease with a high mortality rate worldwide, nevertheless advances in science has led to a decrease in the number of death cases caused by cancer. Aberrant expression of genes occurs during tumorigenesis therefore targeting the signaling pathways that regulate these genes' expression is of importance in cancer therapy. Notch is one of the signaling pathways having interactions with other vital cell signaling molecules responsible for cellular functions such as proliferation, apoptosis, invasion, metastasis, epithelial-to-mesenchymal transition (EMT), angiogenesis, and immune evasion. Furthermore, the Notch pathway is involved in response to chemo- and radiotherapy. Thus, targeting the Notch signaling pathway in cancer therapy can be beneficial for overcoming the therapeutic gaps. Non-coding RNAs (ncRNAs) are a class of RNAs that include short ncRNAs (such as micro RNAs) and long ncRNAs (lncRNAs). MicroRNAs (miRNAs) are ~22 nucleotides in length while lncRNAs have more than 200 nucleotides. Both miRNAs and lncRNAs control vital cellular mechanisms in cells and affect various signaling pathways and Notch is among them. The current review aims to discuss the critical role of ncRNAs in the regulation of the Notch signaling pathway by focusing on different cancer hallmarks including proliferation, apoptosis, autophagy, EMT, invasion, metastasis, and resistance to therapies.Öğe Noncoding RNAs and their therapeutics in paclitaxel chemotherapy: Mechanisms of initiation, progression, and drug sensitivity(Wiley, 2022) Mahabady, Mahmood K.; Mirzaei, Sepideh; Saebfar, Hamidreza; Gholami, Mohammad H.; Zabolian, Amirhossein; Hushmandi, Kiavash; Hashemi, Farid; Tajik, Fatemeh; Hashemi, Mehrdad; Kumar, Alan P.; Aref, Amir R.; Zarrabi, Ali; Khan, Haroon; Hamblin, Michael R.; Ertas, Yavuz Nuri; Samarghandian, SaeedThe identification of agents that can reverse drug resistance in cancer chemotherapy, andenhance the overall efficacy is of great interest. Paclitaxel (PTX) belongs to taxane family hat exerts an antitumor effect by stabilizing microtubules and inhibiting cell cycleprogression. However, PTX resistance often develops in tumors due to the over-expression of drug transporters and tumor?promoting pathways. Noncoding RNAs(ncRNAs) are modulators of many processes in cancer cells, such as apoptosis, migration,differentiation, and angiogenesis. In the present study, we summarize the effects ofncRNAs on PTX chemotherapy. MicroRNAs (miRNAs) can have opposite effects on PTXresistance (stimulation or inhibition) via influencing YES1, SK2, MRP1, and STAT3.Moreover, miRNAs modulate the growth and migration rates of tumor cells in regulatingPTX efficacy. PIWI?interacting RNAs, small interfering RNAs, and short?hairpin RNAs areother members of ncRNAs regulating PTX sensitivity of cancer cells. Long noncodingRNAs (LncRNAs) are similar to miRNAs and can modulate PTX resistance/sensitivity bytheir influence on miRNAs and drug efflux transport. The cytotoxicity of PTX againsttumor cells can also be affected by circular RNAs (circRNAs) and limitation is thatoncogenic circRNAs have been emphasized and experiments should also focus on onco?suppressor circRNAs.Öğe Noncoding RNAs as regulators of STAT3 pathway in gastrointestinal cancers: Roles in cancer progression and therapeutic response(Wiley, 2023) Ashrafizadeh, Milad; Mohan, Chakrabhavi D.; Rangappa, Shobith; Zarrabi, Ali; Hushmandi, Kiavash; Kumar, Alan Prem; Sethi, GautamGastrointestinal (GI) tumors (cancers of the esophagus, gastric, liver, pancreas, colon, and rectum) contribute to a large number of deaths worldwide. STAT3 is an oncogenic transcription factor that promotes the transcription of genes associated with proliferation, antiapoptosis, survival, and metastasis. STAT3 is overactivated in many human malignancies including GI tumors which accelerates tumor progression, metastasis, and drug resistance. Research in recent years demonstrated that noncoding RNAs (ncRNAs) play a major role in the regulation of many signaling pathways including the STAT3 pathway. The major types of endogenous ncRNAs that are being extensively studied in oncology are microRNAs, long noncoding RNAs, and circular RNAs. These ncRNAs can either be tumor-promoters or tumor-suppressors and each one of them imparts their activity via different mechanisms. The STAT3 pathway is also tightly modulated by ncRNAs. In this article, we have elaborated on the tumor-promoting role of STAT3 signaling in GI tumors. Subsequently, we have comprehensively discussed the oncogenic as well as tumor suppressor functions and mechanism of action of ncRNAs that are known to modulate STAT3 signaling in GI cancers.Öğe Overcoming doxorubicin resistance in cancer: siRNA-loaded nanoarchitectures for cancer gene therapy(2022) Deldar Abad Paskeh, Mahshid; Saebfar, Hamidreza; Mahabady, Mahmood Khaksary; Orouei, Sima; Hushmandi, Kiavash; Zarrabi, AliGene therapy can be used as a cancer therapy by affecting signaling networks participating in the aggressive behavior of tumors. Small interfering RNA (siRNA) is a genetic tool employed for gene silencing. The siRNA molecules have a length of 21-22 nucleotides, and are synthetic, short non-coding RNAs. The siRNA molecule should be loaded into the RISC complex to carry out its function to degrade mRNA and reduce protein expression. By targeting oncogenic pathways, siRNA can also promote chemosensitivity and reduce resistance. Doxorubicin (DOX) is an anthracycline family member capable of triggering cell cycle arrest via binding to topoisomerase II and inhibiting DNA replication. The present review focuses on the design of siRNA for increasing DOX sensitivity and overcoming resistance. Molecular pathways such as STAT3, Notch1, Mcl-1 and Nrf2 can be down-regulated by siRNA to promote DOX sensitivity. Furthermore, siRNA can be used to suppress the activity of P-glycoprotein as a cell membrane transporter of drugs, leading to enhanced accumulation of DOX. The co-delivery of DOX and siRNA both incorporated into nanoparticles can increase the intracellular accumulation in cancer cells, and protect siRNA against degradation by enzymes. Furthermore, the circulation time of DOX is lengthened to boost cytotoxicity against cancer cells. The surface modification of nanocarriers with ligands such as RGD or folate increases their selectivity towards cancer cells. Moreover, smart nanostructures, including pH-, redox- and light-responsive are optimized for siRNA and DOX delivery and tumor treatment.Öğe Stimuli-responsive liposomal nanoformulations in cancer therapy: Pre-clinical & clinical approaches(Elsevier, 2022) Ashrafizadeh, Milad; Delfi, Masoud; Zarrabi, Ali; Sharifi, Esmaeel; Rabiee, Navid; Paiva-Santos, Ana Cláudia; Kumar, Alan Prem; Hushmandi, Kiavash; Nazarzadeh Zare, Ehsan; Makvandi, PooyanThe site-specific delivery of antitumor agents is of importance for providing effective cancer suppression. Poor bioavailability of anticancer compounds and the presence of biological barriers prevent their accumulation in tumor sites. These obstacles can be overcome using liposomal nanostructures. The challenges in cancer chemotherapy and stimuli-responsive nanocarriers are first described in the current review. Then, stimuli-responsive liposomes including pH-, redox-, enzyme-, light-, thermo- and magneto-sensitive nanoparticles are discussed and their potential for delivery of anticancer drugs is emphasized. The pH- or redox-sensitive liposomes are based on internal stimulus and release drug in response to a mildly acidic pH and GSH, respectively. The pH-sensitive liposomes can mediate endosomal escape via proton sponge. The multifunctional liposomes responsive to both redox and pH have more capacity in drug release at tumor site compared to pH- or redox-sensitive alone. The magnetic field and NIR irradiation can be exploited for external stimulation of liposomes. The light-responsive liposomes release drugs when they are exposed to irradiation; thermosensitive-liposomes release drugs at a temperature of >40 °C when there is hyperthermia; magneto-responsive liposomes release drugs in presence of magnetic field. These smart nanoliposomes also mediate co-delivery of drugs and genes in synergistic cancer therapy. Due to lack of long-term toxicity of liposomes, they can be utilized in near future for treatment of cancer patients.Öğe Targeting AMPK signaling in ischemic/reperfusion injury: From molecular mechanism to pharmacological interventions(2022) Paskeh, Mahshid Deldar Abad; Asadi, Ava; Mirzaei, Sepideh; Hashemi, Mehrdad; Entezari, Maliheh; Raesi, Rasoul; Hushmandi, Kiavash; Zarrabi, Ali; Ertas, Yavuz Nuri; Aref, Amir Reza; Samarghandian, Saeed; Reiter, Russel J; Ren, JunIschemia is a pathological process in which blood supply to a particular organ is temporarily interrupted resulting in disturbed biological function and homeostasis of local tissues. Following ischemia, reperfusion and reoxygenation may occur which further worsens oxidative stress-mediated damage in cells and tissues. The combined processes are referred to as ischemia/reperfusion (I/R) injury. Immediate management and treatment of I/R is of utmost importance for preventing irreversible and extensive cellular damage. Apoptosis, inflammation and oxidative stress are the most validated pathologies associated with I/R. AMP-activated protein kinase (AMPK) modulates energy metabolism in cells and its activation occurs in response to elevated AMP and ADP levels. Aberrant levels of AMPK are noted in various pathological settings such as diabetes mellitus, cancer and neurological diseases. This review emphasizes AMPK signaling, its related molecular pathways and therapeutic utility during I/R. Activation of AMPK through phosphorylation prevents apoptosis and reduces oxidative stress and inflammation upon I/R. Inducing AMPK signaling normalizes mitochondrial function to inhibit cell death. Autophagy as a cytoprotective mechanism undergoes activation by AMPK/mTOR and AMPK/ULK1 pathways. AMPK reinforces the antioxidant defense capacity via Nrf2 signaling to counteract oxidative stress in I/R. Protective compounds including phytochemicals activate AMPK to alleviate I/R injury.
