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Tumour Cell Size Control and Its Impact on Tumour Cell Function.

Cell size is an important component of cell morphological characteristics. It reflects the characteristics of the cell type, nutritional status, growth stage and physiological function. The cell size of cells of the same type tends to be homogeneous and stable. However, in tumour cells, mutations in cell cycle genes and cytoskeletal genes and overexpression of the corresponding signalling pathways often lead to large variations in tumour cell size. Tumour cells regulate cell size and growth and proliferation through multiple signalling pathways, such as PI3K/Akt/mTOR, Myc and Hippo pathways, w

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… Since cells primarily regulate their size during the G1 phase, cells that are smaller at birth have a longer G1 phase, whereas cells that are larger at birth undergo mitosis more quickly [ 37 ]. … When Rb is overexpressed, it prolongs the duration of the G1 phase and increases cell volume [ 74 ]. …

Azacitidine in 302 patients with WHO-defined acute myeloid leukemia: results from the Austrian Azacitidine Registry of the AGMT-Study Group.

Data on efficacy and safety of azacitidine in acute myeloid leukemia (AML) with >30 % bone marrow (BM) blasts are limited, and the drug can only be used off-label in these patients. We previously reported on the efficacy and safety of azacitidine in 155 AML patients treated within the Austrian Azacitidine Registry (clinicaltrials.gov identifier NCT01595295). We herein update this report with a population almost twice as large (n = 302). This cohort included 172 patients with >30 % BM blasts; 93 % would have been excluded from the pivotal AZA-001 trial (which led to European Medicines Agency (E

Toxicities of Chimeric Antigen Receptor T Cell Therapy in Multiple Myeloma: An Overview of Experience From Clinical Trials, Pathophysiology, and Management Strategies.

In the last few years, monoclonal antibodies (mAbs) such as elotuzumab and daratutumab have brought the treatment of multiple myeloma (MM) into the new era of immunotherapy. More recently, chimeric antigen receptor (CAR) modified T cell, a novel cellular immunotherapy, has been developed for treatment of relapsed/refractory (RR) MM, and early phase clinical trials have shown promising efficacy of CAR T cell therapy. Many patients with end stage RRMM regard CAR T cell therapy as their "last chance" and a "hope of cure". However, severe adverse events (AEs) and even toxic death related to CAR T

High-Dose Continuous Infusion Ifosfamide as Effective Palliation in a Patient With Relapsed Ewing Sarcoma With Bone Marrow Infiltration and Severe Thrombocytopenia: A Case Report.

BackgroundEwing sarcoma is a rare primary mesenchymal tumor of the bone that requires an intensive multimodal therapeutic approach. Multidrug chemotherapy regimens are also the backbone for relapsing/recurring Ewing sarcoma treatment, yet when the disease relapses as bone marrow infiltration, combination chemotherapy might be difficult to administer and prognosis is poor.CaseThis report describes the case of a 22-year-old patient with Ewing sarcoma who developed severe pancytopenia due to bone marrow infiltration, and who was treated with high-dose continuous infusion ifosfamide, obtaining bot

Свойства антиракера ВИЧ-ингибатора Нелфинавира.

Традиционные методы лечения рака могут потерять свою эффективность после появления новых мутации или развития химиотерапии. Несвоевременная диагностика, высокая стоимость лечения и потребность в высокоэффективной инфраструктуре для лечения раковых заболеваний затрудняют доступ к надлежащему лечению в условиях с низким уровнем доходов и ограниченными ресурсами. Переориентация утвержденных лекарственных средств на лечение рака может привести к снижению стоимости и сокращению сроков разработки новых лекарственных средств и к ускорению появления новых и эффективных вариантов лечения для нуждающихс

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… Chow et al. demonstrated that nelfinavir caused accumulation of liposarcoma and fibrosarcoma cells in the G1 phase of the cell cycle, which was associated with increased expression of cell cycle inhibitor p21, and decreased level of PCNA [ 24 ]. … Soprano et al. reported slight accumulation of breast cancer cells in the G1 phase following treatment with nelfinavir for 24 h, associated with a clear reduction in cell cycle regulatory proteins cyclin D, E, A, B and phospho-Rb, and with an increase in the cell cycle inhibitory protein p21; strikingly …

Pterostilbene in the Management and Treatment of Multiple Myeloma.

Multiple Myeloma is a malignancy of the plasma cells of the bone marrow. This cancer rapidly becomes refractory to many of the currently available chemotherapeutic regimens used against it, requiring an alternative option or supplementary therapy. Pterostilbene is a naturally occurring compound in a variety of commonly consumed plants that exhibits strong antioxidant properties and, lately, has shown increasing activity as an anti-neoplastic compound. A review of the literature published since 2015 on Google Scholar and PubMed was conducted, with a focus on randomized controlled trials and an

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… In an in vitro study on lung cancer cells exposed to PT, “massive” chromosomal lesions were created that induced the deterioration of the malignant cells in the G1 phase via the p53 pathway [ 27 ]. … Additionally, testing of PT on MM cells in vitro and in vivo showed increased cell cycle arrest in the G0/G1 phase by decreasing CDK4, CDK6, and cyclin-D1, as was found in studies with other cancers [ 7 ]. …

New PET Radiotracers for the Imaging of Neuroendocrine Neoplasms.

Opinion statementNeuroendocrine neoplasms (NEN) are a heterogeneous group of tumours derived from cells of neuroendocrine origin and can potentially arise everywhere in the human body. The diagnostic assessment of NEN can be performed using a variety of PET radiopharmaceuticals. Well-differentiated NEN (NET) present a high expression of SSTR (somatostatin receptors) and can therefore be studied with 68Ga-DOTA-peptides ([68Ga]Ga-DOTANOC, [68Ga]Ga-DOTATOC, [68Ga]Ga-DOTATATE). Current guidelines recommend the use of SSTR imaging to assess disease extension at staging/restaging, follow-up, assessm

Role of PET/CT and Therapy Management of Pancreatic Neuroendocrine Tumors.

Pancreatic neuroendocrine neoplasms (panNENs) are heterogeneous neoplasms with neuroendocrine differentiation that show peculiar clinical and histomorphological features, with variable prognosis. In recent years, advances in knowledge regarding the pathophysiology and heterogeneous clinical presentation, as well as the availability of different diagnostic procedures for panNEN diagnosis and novel therapeutic options for patient clinical management, has led to the recognition of the need for an active multidisciplinary discussion for optimal patient care. Molecular imaging with positron emissio

Repurposed Drugs in Gastric Cancer.

Gastric cancer (GC) is one of the major causes of death worldwide, ranking as the fifth most incident cancer in 2020 and the fourth leading cause of cancer mortality. The majority of GC patients are in an advanced stage at the time of diagnosis, presenting a poor prognosis and outcome. Current GC treatment approaches involve endoscopic detection, gastrectomy and chemotherapy or chemoradiotherapy in an adjuvant or neoadjuvant setting. Drug development approaches demand extreme effort to identify molecular mechanisms of action of new drug candidates. Drug repurposing is based on the research of

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… Rapamycin inhibits cell proliferation in TMK-1, MKN-28, MKN-45 and MKN-74 GC cells and induces cell cycle arrest in the G1 phase. … Retinoic acid treatment continuously produces Waf1/Cip1/Sdi1/p21 with cell cycle arrest in the G0/G1 phase in apoptosis-inducible cells. …

The protective and chemotherapeutical role of amygdalin in induced mammary cancer in experimental mice and upregulation of related genes.

Breast cancer is a prominent health issue among oncological diseases in emerging nations. The study sought to assess the significant function of amygdalin as a protective and chemotherapeutical substance in combating this lethal condition, either independently or in conjunction with tamoxifen therapy. Breast cancer in mice was induced by 7,12-Dimethylbenz(a)anthracene (DMBA). Mice were divided into six groups, 15 mice in each group. (i) control group, (ii) carcinogenic group, (iii) tamoxifen-treated group, (iv) Amygdalin-treated group, (v) (Amygdalin + tamoxifen) group, (vi) Amygdalin protecti

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… Pre-treatment with amygdalin ameliorated the deregulation of the cell population significantly; however, a pronounced increase in cell population was detected in the G1 phase and G0/1 phase. … On the other hand, more remarkable cell arrest has occurred at the sub-G1 phase, S phase, and G2/M phase. However, an insignificant change in cell population was observed in the G1 phase compared to amygdalin as sole treatment, as shown in Table 8 and Fig. 3 . …

Anti-Cancer Potential of Cannabinoids, Terpenes, and Flavonoids Present in Cannabis.

In recent years, and even more since its legalization in several jurisdictions, cannabis and the endocannabinoid system have received an increasing amount of interest related to their potential exploitation in clinical settings. Cannabinoids have been suggested and shown to be effective in the treatment of various conditions. In cancer, the endocannabinoid system is altered in numerous types of tumours and can relate to cancer prognosis and disease outcome. Additionally, cannabinoids display anticancer effects in several models by suppressing the proliferation, migration and/or invasion of can

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… Nerolidol caused dose-dependent increases in the proportion of cells in the G0-G1 phase and decreases in the proportion of cells in the S phase [ 276 ]. … In oral cancers, kaempferol also induced cell cycle arrest, but alternatively at the G0/G1 phase [ 339 ]. …

Новые знания о генетической основе и транскриптомном освещении вирулентности в вариантах Pseudomonas shiringae pv. actinidiae.

Псевдомонас сирингаэ pv. actindiae (Psa) является причинным агентом киви бактериального канцера, но факторы, влияющие на его патогенность в природных условиях, остаются малоизученными. В этом исследовании мы изолировали two Пса, штаммы G126 и G282, из зараженных киви садов в китайской провинции Гуйчжоу. Оба изолируют, отнесенные к категории Psa-biovar 3, были подтверждены через Psa3-specific и филогеномический анализ. Анализы патогенности на киви-фруктовых листьях и ветках «Хонгян» показали значительное сокращение числа некротических пятен и уменьшение размеров повреждений при инфекции G282 по

Inhibition of Plk1 and Cyclin B1 expression results in panobinostat-induced G₂ delay and mitotic defects.

The development of clinically useful histone deacetylase inhibitors has expanded greatly. In a preclinical study, we showed that panobinostat (LBH589) inhibits cell cycle progression of human head and neck squamous cell carcinoma (HNSCC) cell lines at G₂/M and an associated decrease in expression of particular genes required for passage through G₂ and mitosis. In this study we sought to analyse the mechanistic underpinnings of panobinostat-induced growth arrest. HNSCC cell lines were synchronised and progression through mitosis monitored. We demonstrate that panobinostat causes a marked G₂ del

Nature-Inspired Strategies in Cancer Management: The Potential of Plant Extracts in Modulating Tumour Biology.

Cancer is a serious group of diseases that is a huge problem on a global scale and is the second most common cause of death. Commonly used therapies do not always lead to the complete elimination of diseased cells or tissues and are also burdened with side effects that reduce the quality of life of patients. Due to these difficulties, new therapeutic approaches are still being sought. In recent years, there has been a return to interest in natural methods of treating various diseases, among which phytochemicals are particularly interesting. This article reviews plant extracts with anticancer p

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… Hexane extract of Avicennia marina leaves showed antiproliferative activity against HCT116 cells by arresting the G0–G1 phase of the cell cycle, while in the case of MCF-7 and HepG2 cells, the basis of this activity was the arrest of the S phase of the cell cycle [ 70 ]. … Methanol extract of Holarrhena floribunda inhibited the proliferation of HeLa, MCF-7, and HT-29 cells by causing arrest in the G0/G1 phase of the cell cycle [ 61 ]. …

The cross talk of ubiquitination and chemotherapy tolerance in colorectal cancer.

Ubiquitination, a highly adaptable post-translational modification, plays a pivotal role in maintaining cellular protein homeostasis, encompassing cancer chemoresistance-associated proteins. Recent findings have indicated a potential correlation between perturbations in the ubiquitination process and the emergence of drug resistance in CRC cancer. Consequently, numerous studies have spurred the advancement of compounds specifically designed to target ubiquitinates, offering promising prospects for cancer therapy. In this review, we highlight the role of ubiquitination enzymes associated with c

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… TRIM72 promotes G1-phase cell cycle arrest. Cyclin F inhibits the activity of transcription motors in the G2 cell cycle. … In addition, abnormally high TRIM72 expression catalyzes K48-linked ubiquitination and degradation of cell cycle protein D1, leading to cell cycle arrest in the G1 phase (Fang et al. 2023 ). …

Bavachin suppresses proliferation of laryngopharyngeal cancer by regulating the STAT3 and MAPK signaling pathways.

Purpose: The present study aimed to explore the underlying antitumor effects of bavachin on laryngopharyngeal cancer in-vitro and in-vivo. Methods: Tu212 and FaDu cells were cultured in the incubator. Cells were treated with 0.1% DMSO (control group) and different concentrations of bavachin (experimental groups) for exploring the results of proliferation and apoptosis. We revealed the underlying mechanism of bavachin on laryngopharyngeal cancer through western blotting, qRT-PCR assay and immunofluorescence staining. Results: Bavachin could suppress the proliferation and migration of laryngopha

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… Among the stages of the cell cycle, G0/G1 phase is tightly regulated by cyclin D1, CDK4/6, and other related proteins 21 . … These results suggested that bavachin could arrest the Tu212 and FaDu cells in G0/G1 phase. …

Relapsed and refractory lymphoid neoplasms and multiple myeloma with a focus on carfilzomib.

Proteasomal inhibition revolutionized myeloma therapies in this decade of novel agents. The only US Food and Drug Administration approved proteasome inhibitor so far, bortezomib effectively targets the constitutive proteasome subunit β5 of the 26S proteasome. Bortezomib induces high and quality response rates that are durable. However, myeloma cells acquire resistance to bortezomib through various mechanisms. Further, grade 3/4 peripheral neuropathy is seen in up to a quarter of patients treated with bortezomib. While the recent change in the mode of administration via the subcutaneous route i

Therapeutic effects of the novel subtype-selective histone deacetylase inhibitor chidamide on myeloma-associated bone disease.

Histone deacetylases are promising therapeutic targets in hematological malignancies. In the work herein, we investigated the effect of chidamide, a new subtype-selective histone deacetylase inhibitor that was independently produced in China, on multiple myeloma and its associated bone diseases using different models. The cytotoxicity of chidamide toward myeloma is due to its induction of cell apoptosis and cell cycle arrest by increasing the levels of caspase family proteins p21 and p27, among others. Furthermore, chidamide exhibited significant cytotoxicity against myeloma cells co-cultured

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… (D) Cell cycle arrest was examined using flow cytometry, and ARP-1 cells underwent G1 phase arrest in response to incubation with chidamide regardless of co-incubation with Q-VD-Oph. (E) Chidamide could significantly induce + primary CD138 cell apoptosis after incubation for 48h (n=5, * P <0.05). … HDACs regulate a variety of targets involved in different cell functions and processes, such as apoptosis, the cell cycle and differentiation. 20 Chidamide inhibited HDAC activity and induced cell cycle arrest in G1 phase, accompanied by cell apoptosis. …

Генетические причины непатогенных штаммов Pseudomonas syringae pv. actinidiae в киви-садах.

Бактериальная канцерозная болезнь стала наибольшей угрозой для выращивания и производства киви. Мономорфная подпопуляция Pseudomonas syringae pv. actinidiae biovar 3 (Psa3) отвечает за пандемию по всему миру. В пандемической подпопуляции и других подпопуляциях Psa3, вызывающих эпидемии в Китае, обнаружена разнообразие в патогенности. Однако генетические основы еще не были раскрыты. В данном исследовании 117 изолятов Psa3 были идентифицированы с помощью Psa- и P. Psa3-специфических праймеров и оценены по патогенности. Три изолата G4, G40 и S2 не патогенны для киви и не вызывают гиперчувствитель

Recent advances in development of CDK7 inhibitors and their clinical trials: a narrative review.

Background and objectiveCDK7, a member of the CDK-activating kinase (CAK) family, plays a key role in cell cycle, transcriptional regulation and in regulating the proliferation and apoptosis of tumor cells. Some evidence suggests that CDK7 is a promising target for cancer treatments, so it is of great significance to develop an efficient and highly selective CDK7 inhibitor. CDK7 inhibitors have not yet been marketed. This review focuses on some selective CDK7 inhibitors currently in clinical research, and introduces their targets, indications, and the latest clinical trial progress in detail.M

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… CAK regulates cell cycle progression via targeted phosphorylation: ( Figure 1 ) ( 3 , 6 ): (I) activating CDK4/6 to phosphorylate retinoblastoma (Rb) protein into its inactive state, driving G1-phase progression ( 12 , 13 ); (II) activating CDK2 to initiate S-phase transition (G1/S) ( 14 , 15 ); and … CDK7 inhibition predominantly arrests cells in the G1 phase by blocking G1/S transition, with secondary G2-phase arrest impeding G2/M transition ( 3 , 6 , 12 - 16 ). Figure 1 Role of CAK in cell cycle progression ( 3 , 6 ). …