6,223 results match your criteria intrinsic apoptotic

Substituted dienes prepared from betulinic acid - Synthesis, cytotoxicity, mechanism of action, and pharmacological parameters.

Eur J Med Chem 2021 Jul 15;224:113706. Epub 2021 Jul 15.

Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 1333/5, 779 00, Olomouc, Czech Republic. Electronic address:

A set of new substituted dienes were synthesized from betulinic acid by its oxidation to 30-oxobetulinic acid followed by the Wittig reaction. Cytotoxicity of all compounds was tested in vitro in eight cancer cell lines and two noncancer fibroblasts. Almost all dienes were more cytotoxic than betulinic acid. Read More

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Biochanin A Inhibits Glioblastoma Growth Restricting Glycolysis and Mitochondrial Oxidative Phosphorylation.

Front Oncol 2021 8;11:652008. Epub 2021 Jul 8.

Department of Neurosurgery, Lanzhou University Second Hospital, Lanzhou, China.

Abnormal metabolism serves a critical role in glioblastoma (GBM). Biochanin A (BCA), a flavonoid phenolic compound found in edible and herbal plants, has antioxidative and antitumor activities. However, it remains unclear whether BCA has an effect on energy metabolism. Read More

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PROTACs are effective in addressing the platelet toxicity associated with BCL-X inhibitors.

Explor Target Antitumor Ther 2020 31;1:259-272. Epub 2020 Aug 31.

Department of Medicinal Chemistry, College of Pharmacy, University of Florida, Gainesville, FL 32610, USA.

BCL-X is an anti-apoptotic protein that plays an important role in tumorigenesis, metastasis, and intrinsic or therapy-induced cancer drug resistance. More recently, BCL-X has also been identified as a key survival factor in senescent cells. Accumulation of senescent cells has been indicated as a causal factor of aging and many age-related diseases and contributes to tumor relapse and metastasis. Read More

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Complement Factor C5a Inhibits Apoptosis of Neutrophils-A Mechanism in Polytrauma?

J Clin Med 2021 Jul 17;10(14). Epub 2021 Jul 17.

Institute of Clinical and Experimental Trauma-Immunology (ITI), University of Ulm, 89081 Ulm, Germany.

Life-threatening polytrauma results in early activation of the complement and apoptotic system, as well as leukocytes, ultimately leading to the clearance of damaged cells. However, little is known about interactions between the complement and apoptotic systems in PMN (polymorphonuclear neutrophils) after multiple injuries. PMN from polytrauma patients and healthy volunteers were obtained and assessed for apoptotic events along the post-traumatic time course. Read More

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A Novel Dialkylamino-Functionalized Chalcone, DML6, Inhibits Cervical Cancer Cell Proliferation, In Vitro, via Induction of Oxidative Stress, Intrinsic Apoptosis and Mitotic Catastrophe.

Molecules 2021 Jul 11;26(14). Epub 2021 Jul 11.

Department of Pharmacology and Experimental Therapeutics, College of Pharmacy & Pharmaceutical Sciences, University of Toledo, Toledo, OH 43614, USA.

In this study, we designed, synthesized and evaluated, in vitro, novel chalcone analogs containing dialkylamino pharmacophores in the cervical cancer cell line, OV2008. The compound, was selective and significantly decreased the proliferation of OV2008 and HeLa cells in sub-micromolar concentrations, compared to prostate, lung, colon, breast or human embryonic kidney cell line (HEK293). , at 5 μM, arrested the OV2008 cells in the G2 phase. Read More

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Platelet Microparticles Decrease Daunorubicin-Induced DNA Damage and Modulate Intrinsic Apoptosis in THP-1 Cells.

Int J Mol Sci 2021 Jul 6;22(14). Epub 2021 Jul 6.

Department of Clinical Science, University of Bergen, 5021 Bergen, Norway.

Platelets can modulate cancer through budding of platelet microparticles (PMPs) that can transfer a plethora of bioactive molecules to cancer cells upon internalization. In acute myelogenous leukemia (AML) this can induce chemoresistance, partially through a decrease in cell activity. Here we investigated if the internalization of PMPs protected the monocytic AML cell line, THP-1, from apoptosis by decreasing the initial cellular damage inflicted by treatment with daunorubicin, or via direct modulation of the apoptotic response. Read More

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Human mesenchymal stem cells derived from amniotic membrane attenuate isoproterenol (ISO)-induced myocardial injury by targeting apoptosis.

Med J Islam Repub Iran 2021 26;35:82. Epub 2021 Jun 26.

Physiology Research Center, Iran University of Medical Sciences. Tehran, Iran.

Currently, stem cell therapy has been proposed as an efficient strategy to prevent or treat myocardial injuries. The current study was conducted to examine cardioprotective effects of human mesenchymal stem cells derived from amniotic membrane (hAMSCs) against isoproterenol (ISO)-induced myocardial injury and explore its potential mechanisms. The hAMSCs were injected intramyocardially in male Wistar rats 28 days after last injection of ISO (170 mg/kg body weight for 4 consecutive days). Read More

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A comparative study of anti-leukemic effects of kaempferol and epigallocatechin-3-gallate (EGCG) on human leukemia HL-60 cells.

Avicenna J Phytomed 2021 Jul-Aug;11(4):314-323

Golestan Rheumatology Research Center, Sayad Shirazi Hospital, Golestan University of Medical Sciences, Gorgan, Iran.

Objective: Acute promyelocytic leukemia (APL) is among the most threatening hematological malignant cancers. Defects in cell growth and apoptotic pathways lead to the pathogenesis of the disease as well as its resistance to therapy; therefore, it is a good model for examining pro-apoptotic agents. The present study compared the molecular mechanism induced by kaempferol and epigallocatechin gallate (EGCG) as well as all-trans retinoic acid (ATRA), in HL-60 leukemia cells during five days. Read More

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February 2020

Homeostatic apoptosis prevents competition-induced atrophy in follicular B cells.

Cell Rep 2021 Jul;36(3):109430

Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, 3800 VIC, Australia; ACRF Chemical Biology Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, 3052 VIC, Australia; Department of Medical Biology, The University of Melbourne, Parkville, 3010 VIC, Australia; Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, 5005 SA, Australia. Electronic address:

While the intrinsic apoptosis pathway is thought to play a central role in shaping the B cell lineage, its precise role in mature B cell homeostasis remains elusive. Using mice in which mature B cells are unable to undergo apoptotic cell death, we show that apoptosis constrains follicular B (FoB) cell lifespan but plays no role in marginal zone B (MZB) cell homeostasis. In these mice, FoB cells accumulate abnormally. Read More

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Bbc3 loss enhances survival and protein clearance in neurons exposed to the organophosphate pesticide chlorpyrifos.

Toxicol Sci 2021 Jul 21. Epub 2021 Jul 21.

Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Hanover, NH.

Exposure to environmental toxicants can increase the risk of developing age-related neurodegenerative disorders. Exposure to the widely used organophosphate pesticide chlorpyrifos (CPF) is associated with increased risk of developing Alzheimer's disease (AD) and Parkinson's disease (PD), but the cellular mechanisms underlying CPF toxicity in neurons are not completely understood. We evaluated CPF toxicity in mouse primary cortical neuronal cultures, using RNA-Seq to identify cellular pathways modulated by CPF. Read More

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Juniperus communis extract induces cell cycle arrest and apoptosis of colorectal adenocarcinoma in vitro and in vivo.

Braz J Med Biol Res 2021 16;54(10):e10891. Epub 2021 Jul 16.

Department of Medical Laboratory and Biotechnology, Chung Shan Medical University, Taichung, Republic of China, Taiwan.

Juniperus communis (JCo) is a well-known traditional Chinese medicinal plant that has been used to treat wounds, fever, swelling, and rheumatism. However, the mechanism underlying the anticancer effect of JCo extract on colorectal cancer (CRC) has not yet been elucidated. This study investigated the anticancer effects of JCo extract in vitro and in vivo as well as the precise molecular mechanisms. Read More

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Burn Injury: Mechanisms of Keratinocyte Cell Death.

Med Sci (Basel) 2021 Jul 16;9(3). Epub 2021 Jul 16.

Plastic Surgery and Burn Unit, Fakeeh Care & Fakeeh College of Medical Sciences, P.O. Box 2537, Jeddah 21461, Saudi Arabia.

Cutaneous burn injury is associated with epidermal loss in the zone of coagulation zone and delayed tissue loss in the zone of stasis. Thus, thermal stress can trigger both necrosis and regulated cell death (RCD) or apoptosis. Experimental in vitro and in vivo work has clearly demonstrated apoptotic events of thermally injured keratinocytes that are accompanied by morphological and biochemical markers of regulated cell death. Read More

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Garlic (Allium sativum)-derived SEVs inhibit cancer cell proliferation and induce caspase mediated apoptosis.

Sci Rep 2021 Jul 20;11(1):14773. Epub 2021 Jul 20.

Department of Genetics and Bioengineering, Faculty of Engineering and Architecture, Yeditepe University, 26 Ağustos Campus, Kayisdagi Cad., Kayisdagi, 34755, Istanbul, Turkey.

As a key component of the cell-to-cell communication, small extracellular vesicles (SEVs) released from various sources are known to be affecting the physiological conditions of the target cells. Although it has been suggested that edible plant-derived nanoparticles contributes to the cross kingdom communication with the mammalian cells, the effect of these particles on cancer cell progression still needs a further exploration. Here, we isolated and then characterized garlic derived SEVs by nanoparticle tracking analysis, electron microscopy and SEV surface antibodies. Read More

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Anti-inflammatory and antiaging properties of chlorogenic acid on UV-induced fibroblast cell.

PeerJ 2021 7;9:e11419. Epub 2021 Jul 7.

Faculty of Medicine, Maranatha Christian University, Bandung, West Java, Indonesia.

Background: Skin aging is the most common dermatological problem caused by intrinsic and extrinsic factor, such as exposure to (ultraviolet) UV rays. Chlorogenic acid (CA) is a phenolic compound which is known for its antioxidant properties against oxidative stress.

Objective: This study investigates the antiaging and anti-inflammatory properties of CA on UV-induced skin fibroblast cells. Read More

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Crocin Promotes Apoptosis in Human EBV-Transformed B-Lymphocyte via Intrinsic Pathway.

Mediterr J Hematol Infect Dis 2021 1;13(1):e2021049. Epub 2021 Jul 1.

Golestan Rheumatology Research Center, Sayad Shirazi Hospital, Golestan University of Medical Sciences, Gorgan, Iran.

Background: As a major carotenoid in saffron, crocin demonstrates potent anti-cancer impacts. However, its anti-lymphoma effects remain vague, especially in the human EBV-associated B-cell lymphoproliferative disorders. This study examined crocin's apoptogenic potential and its underlying mechanism in CO 88BV59-1 cell line vs. Read More

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Insulin treatment to type 1 male diabetic rats protects fertility by avoiding testicular apoptosis and cell cycle arrest.

Gene 2021 Oct 15;799:145847. Epub 2021 Jul 15.

Department of Basic Sciences, Faculty of Veterinary Medicine, Urmia University, P.O.BOX: 1177, Urmia, Iran. Electronic address:

Background: Uncontrolled type 1 diabetes mellitus (T1D) impairs reproductive potential of males. Insulin treatment restores metabolic parameters but it is unclear how it protects male reproductive health. Herein, we hypothesized that insulin treatment to T1D rats protects testicular physiology by mediating mechanisms associated with apoptosis and cell cycle. Read More

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October 2021

Knockdown of c-MYC Controls the Proliferation of Oral Squamous Cell Carcinoma Cells in vitro via Dynamic Regulation of Key Apoptotic Marker Genes.

Int J Mol Cell Med 2021 22;10(1):45-55. Epub 2021 May 22.

Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia.

Oral squamous cell carcinoma (OSCC) is the most common malignant epithelial cancer occurring in the oral cavity, where it accounts for nearly 90% of all oral cavity neoplasms. The c-MYC transcription factor plays an important role in the control of programmed cell death, normal-to-malignant cellular transformation, and progression of the cell cycle. However, the role of in controlling the proliferation of OSCC cells is not well known. Read More

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Death-Associated Protein Kinase 1 Promotes Alveolar Epithelial Cell Apoptosis and Ventilator-Induced Lung Injury Through P53 Pathway.

Shock 2021 Jul 8. Epub 2021 Jul 8.

Department of Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277, Jiefang Ave, Wuhan, 430022, Hubei, China Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1277, Jiefang Ave, Wuhan, 430022, Hubei, China.

Objectives: Mechanical stretch induced alveolar epithelial cell (AEC) apoptosis participates in the onset of ventilator induced lung injury (VILI). In this study, we explored whether death associated protein kinase 1 (DAPK1) mediated cyclic stretch (CS) induced AEC apoptosis and VILI though P53 pathway.

Materials And Methods: AEC apoptosis was induced by CS using the FX-5000T Flexercell Tension Plus system. Read More

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Evaluation of Liposomal and Microbubbles Mediated Delivery of Doxorubicin in Two-Dimensional (2D) and Three-Dimensional (3D) Models for Breast Cancer.

Eur J Breast Health 2021 Jul 24;17(3):274-282. Epub 2021 Jun 24.

Department of Basic Oncology, Institute of Oncology, Dokuz Eylül University, İzmir, Turkey.

Objective: Liposomal cancer treatment strategies are useful in removing the side effects that were the main concern in recent years. In this study, we prepared microbubble (MBs) conjugated with DOX-loaded liposomes (DOX-loaded MBs) and investigated their effectiveness in breast cancer cells in two dimensions (2D) and three dimensions (3D).

Materials And Methods: With this aim, breast cancer cells with different features (4T1, MDA-MB231, MCF-7) were growth in 2D and 3D dimensions. Read More

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Gallic Acid Hindered Lung Cancer Progression by Inducing Cell Cycle Arrest and Apoptosis in A549 Lung Cancer Cells via PI3K/Akt Pathway.

Biomol Ther (Seoul) 2021 Jul 15. Epub 2021 Jul 15.

Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Republic of Korea.

This study elucidates the anti-cancer potential of gallic acid (GA) as a promising therapeutic agent that exerts its effect by regulating the PI3K/Akt pathway. To prove our research rationale, we used diverse experimental methods such as cell viability assay, colony formation assay, tumor spheroid formation assay, cell cycle analysis, TUNEL assay, Western blot analysis, xenograft mouse model and histological analysis. Treatment with GA inhibited cell proliferation in dose-dependent manner as measured by cell viability assay at 48 h. Read More

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Bcl-2/Bcl-xL inhibitor ABT-263 overcomes hypoxia-driven radioresistence and improves radiotherapy.

Cell Death Dis 2021 Jul 13;12(7):694. Epub 2021 Jul 13.

Institute for Cell Biology (Cancer Research), University Hospital Essen, University of Duisburg-Essen, Essen, Germany.

Hypoxia, a characteristic of most human solid tumors, is a major obstacle to successful radiotherapy. While moderate acute hypoxia increases cell survival, chronic cycling hypoxia triggers adaptation processes, leading to the clonal selection of hypoxia-tolerant, apoptosis-resistant cancer cells. Our results demonstrate that exposure to acute and adaptation to chronic cycling hypoxia alters the balance of Bcl-2 family proteins in favor of anti-apoptotic family members, thereby elevating the apoptotic threshold and attenuating the success of radiotherapy. Read More

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Overcoming intrinsic resistance of cancer cells to CAR T-cell killing.

Clin Cancer Res 2021 Jul 12. Epub 2021 Jul 12.

Department of Hematology, CHU Rennes

In the past few years, chimeric antigen receptor (CAR) T-cell therapy has emerged as a promising treatment for cancers that failed standard treatments. Such therapies have already been approved in several blood cancers such as B-cell leukemia and lymphoma. Despite this progress, a significant proportion of patients experience primary or secondary resistance to CAR-T cell therapy. Read More

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Low Energy Shock Wave Therapy Attenuates Mitochondrial Dysfunction and Improves Bladder Function in HCl induced Cystitis in Rats.

Biomed J 2021 Jul 2. Epub 2021 Jul 2.

Department of Urology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan; Center for Shockwave Medicine and Tissue Engineering, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, 83301, Taiwan. Electronic address:

Background: We examine the effects of low energy shock wave (LESW)) on bladder and mitochondrial function in a rat model of HCl induced cystitis, and the influence of dynamic bladder filling volume on LESW responses. Dysregulation of mitochondria function may impact the urothelial barrier and contribute to bladder dysfunction in patients with Interstitial cystitis/bladder pain syndrome (IC/BPS).

Materials And Methods: Female Sprague-Dawley rats underwent urethral catheterization and intravesical instillation of 0. Read More

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A Novel Ruthenium-Fluvastatin Complex Downregulates SNCG Expression to Modulate Breast Carcinoma Cell Proliferation and Apoptosis via Activating the PI3K/Akt/mTOR/VEGF/MMP9 Pathway.

Oxid Med Cell Longev 2021 7;2021:5537737. Epub 2021 Jun 7.

Department of Oncology, Nanjing First Hospital Nanjing Medical University, Nanjing 210006, China.

Breast cancer is the most common cause of malignancy and cancer-related morbidity and death worldwide that requests effective and safe chemotherapy. Evaluation of metallodrug-based anticancer agents and statins as chemotherapeutics with fewer side effects is a largely unexplored research field. Synthesis and characterization of the ruthenium-fluvastatin complex were achieved using multiple spectroscopic techniques and thus further examined to evaluate its chemotherapeutic prospects in both MDA-MB-231 and MCF-7 cancer lines and eventually in vivo models of DMBA-induced mammary carcinogenesis in rodents. Read More

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PML-II regulates ERK and AKT signal activation and IFNα-induced cell death.

Cell Commun Signal 2021 Jul 2;19(1):70. Epub 2021 Jul 2.

School of Life Sciences, University of Warwick, Coventry, UK.

Background: The requirement of promyelocytic leukaemia protein (PML) in interferon (IFN)-induced cell apoptosis is well-established. However, the exact mechanisms by which the multiple isoforms of PML protein participate in this process remain not well-understood. We previously demonstrated that PML isoform II (PML-II) positively regulates induced gene expression during a type I IFN response and evaluate here how PML-II contributes to IFNα-induced cell death. Read More

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Pathophysiological Roles of Stress-Activated Protein Kinases in Pulmonary Fibrosis.

Int J Mol Sci 2021 Jun 3;22(11). Epub 2021 Jun 3.

Department of Biomedical Science, Graduate School of Medicine, Chiba University, Chiba 260-8670, Japan.

Idiopathic pulmonary fibrosis (IPF) is one of the most symptomatic progressive fibrotic lung diseases, in which patients have an extremely poor prognosis. Therefore, understanding the precise molecular mechanisms underlying pulmonary fibrosis is necessary for the development of new therapeutic options. Stress-activated protein kinases (SAPKs), c-Jun N-terminal kinase (JNK), and p38 mitogen-activated protein kinase (p38) are ubiquitously expressed in various types of cells and activated in response to cellular environmental stresses, including inflammatory and apoptotic stimuli. Read More

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Potential Biomarkers for Treatment Response to the BCL-2 Inhibitor Venetoclax: State of the Art and Future Directions.

Cancers (Basel) 2021 Jun 14;13(12). Epub 2021 Jun 14.

Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.

Intrinsic apoptotic pathway dysregulation plays an essential role in all cancers, particularly hematologic malignancies. This role has led to the development of multiple therapeutic agents targeting this pathway. Venetoclax is a selective BCL-2 inhibitor that has been approved for the treatment of chronic lymphoid leukemia and acute myeloid leukemia. Read More

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CASPAM: A Triple-Modality Biosensor for Multiplexed Imaging of Caspase Network Activity.

ACS Sens 2021 Jul 30;6(7):2642-2653. Epub 2021 Jun 30.

Department of Physics, FCEN, University of Buenos Aires and IFIBA, CONICET, Buenos Aires C1428EHA, Argentina.

Understanding signal propagation across biological networks requires to simultaneously monitor the dynamics of several nodes to uncover correlations masked by inherent intercellular variability. To monitor the enzymatic activity of more than two components over short time scales has proven challenging. Exploiting the narrow spectral width of homo-FRET-based biosensors, up to three activities can be imaged through fluorescence polarization anisotropy microscopy. Read More

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Co-delivery of quercetin and caffeic-acid phenethyl ester by polymeric nanoparticles for improved antitumor efficacy in colon cancer cells.

J Microencapsul 2021 Jul 5:1-13. Epub 2021 Jul 5.

Department of Molecular Biology and Genetics, Faculty of Arts and Science, Yildiz Technical University, Istanbul, Turkey.

Aim: This study aimed to synthesise quercetin- caffeic-acid phenethyl ester (CAPE)-co-loaded poly(lactic-co-glycolic-acid) (PLGA) nanoparticles (QuCaNP) and investigate their anti-cancer activity on human colorectal carcinoma HT-29 cells.

Methods: QuCaNPs were synthesised using single-emulsion (o/w) solvent evaporation method. Particle size, zeta potential, polydispersity index, release profile, and surface morphology of QuCaNPs were determined. Read More

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Ectopic BH3-only protein Bim acts as a co-chaperone to positively regulate Hsp70 in yeast.

J Biochem 2021 Jun 29. Epub 2021 Jun 29.

State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, Dalian, China.

The chaperone heat shock protein 70 (Hsp70) is conserved from bacteria to humans and is crucial for avoiding protein misfolding under stress. Bim functions mainly as one of the Bcl-2 family pro-apoptotic members, was identified to be a co-chaperone of Hsp70. Herein, we reported that ectopic Bim could constitute the interactions with intrinsic Hsp70 and translate its positive co-chaperone activity in vitro to the yeast growth promotion and help Hsp70 to fold its client Ras-like protein. Read More

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