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Topic Review
Ferroptosis Modulation as Therapeutic Target for Glioblastoma Treatment
Glioblastoma multiforme is a lethal disease and represents the most common and severe type of glioma. Drug resistance and the evasion of cell death are the main characteristics of its malignancy, leading to a high percentage of disease recurrence and the patients’ low survival rate. Exploiting the modulation of cell death mechanisms could be an important strategy to prevent tumor development and reverse the high mortality and morbidity rates in glioblastoma patients. Ferroptosis is a recently described type of cell death, which is characterized by iron accumulation, high levels of polyunsaturated fatty acid (PUFA)-containing phospholipids, and deficiency in lipid peroxidation repair. Several studies have demonstrated that ferroptosis has a potential role in cancer treatment and could be a promising approach for glioblastoma patients.
  • 445
  • 08 Jul 2022
Topic Review
RNF168 in Tumor Progression
RING finger protein 168 (RNF168) is an E3 ubiquitin ligase with the RING finger domain. It is an important protein contributing to the DNA double-strand damage repair pathway. 
  • 445
  • 06 Feb 2023
Topic Review
T Cell-Based Therapies of HCC
The scope of therapeutic options for the treatment of hepatocellular carcinoma (HCC) has recently been expanded by immunotherapeutic regimens. T cell-based therapies, especially in combination with other treatments have achieved far better outcomes compared to conventional treatments alone. However, there is an emerging body of evidence that eliciting T cell responses in immunotherapeutic approaches is insufficient for favorable outcomes.
  • 443
  • 29 Mar 2022
Topic Review
Redox Homeostasis in Pancreatic β-Cells
Redox status is a key determinant in the fate of every cell, β-cell in particular.  β-cells are not primarily detoxifying like e.g. hepatocytes or kidney cells and thus do not possess extensive antioxidant defense machinery. However, they show a wide range of redox regulating proteins, such as peroxiredoxins, thioredoxins or thioredoxin reductases, etc., being functionally compartmentalized. These proteins keep fragile redox homeostasis and serve as messengers and amplifiers of redox signaling which is inevitable for proper β-cell function (particularly insulin secretion) and maintenance. Dysbalance in redox homeostasis establishes oxidative stress which accompanies the development of type 2 diabetes.
  • 442
  • 06 May 2021
Topic Review
Non-Catalytic Tyrosine-Phosphorylated Receptors
Non-catalytic tyrosine-phosphorylated receptors (NTRs), also called immunoreceptors or Src-family kinase-dependent receptors, are a group of cell surface receptors expressed by leukocytes that are important for cell migration and the recognition of abnormal cells or structures and the initiation of an immune response. These transmembrane receptors are not grouped into the NTR family based on sequence homology, but because they share a conserved signalling pathway utilizing the same signalling motifs. A signaling cascade is initiated when the receptors bind their respective ligand resulting in cell activation. For that tyrosine residues in the cytoplasmic tail of the receptors have to be phosphorylated, hence the receptors are referred to as tyrosine-phosphorylated receptors. They are called non-catalytic receptors, as the receptors have no intrinsic tyrosine kinase activity and cannot phosphorylate their own tyrosine residues. Phosphorylation is mediated by additionally recruited kinases. A prominent member of this receptor family is the T-cell receptor.
  • 442
  • 28 Nov 2022
Topic Review
ER Stress Responses
The endoplasmic reticulum (ER) is a critical organelle, storing the majority of calcium and governing protein translation. Thus, it is crucial to keep the homeostasis in all ER components and machineries. The ER stress sensor pathways, including IRE1/sXBP1, PERK/EIf2α and ATF6, orchestrate the major regulatory circuits to ensure ER homeostasis. The embryonic or postnatal lethality that occurs upon genetic depletion of these sensors reveals the essential role of the ER stress pathway in cell biology. In contrast, the impairment or excessive activation of ER stress has been reported to cause or aggravate several diseases such as atherosclerosis, diabetes, NAFDL/NASH, obesity and cancer. Being part of innate immunity, myeloid cells are the first immune cells entering the inflammation site. Upon entry into a metabolically stressed disease environment, activation of ER stress occurs within the myeloid compartment, leading to the modulation of their phenotype and functions.
  • 441
  • 26 May 2021
Topic Review
The Proteasome Activator PA200/PSME4
Proteasomes comprise a family of proteasomal complexes essential for maintaining protein homeostasis. Accordingly, proteasomes represent promising therapeutic targets in multiple human diseases. Several proteasome inhibitors are approved for treating hematological cancers. Their side effects impede their efficacy and broader therapeutic applications. Therefore, understanding the biology of the different proteasome complexes present in the cell is crucial for developing tailor-made inhibitors against specific proteasome complexes. 
  • 441
  • 09 Sep 2022
Topic Review
Enterobacteria Phage P22
Enterobacteria phage P22 is a bacteriophage in the Podoviridae family that infects Salmonella typhimurium. Like many phages, it has been used in molecular biology to induce mutations in cultured bacteria and to introduce foreign genetic material. P22 has been used in generalized transduction and is an important tool for investigating Salmonella genetics.
  • 441
  • 02 Dec 2022
Topic Review
Parathyroid Hormone-Related Protein
Parathyroid hormone-related protein (PTHrP), classically regarded as the mediator of the humoral hypercalcemia of malignancy syndrome, is a polyhormone that undergoes proteolytic processing into smaller bioactive forms. These bioactive forms comprise an N-terminal-as well as midregion-and C-terminal peptides, which have been shown to regulate various biological events, such as survival, proliferation and differentiation, in diverse cell model systems, both normal and pathological. 
  • 442
  • 12 Jul 2023
Topic Review
T Lymphocytes in Brief
T lymphocytes, often referred to as T cells, are a crucial component of the immune system. These specialized white blood cells originate in the bone marrow and undergo maturation in the thymus gland. T cells are known for their remarkable specificity in recognizing antigens presented by other cells. This recognition is mediated by the T cell receptor (TCR) on their surface. There are two primary subsets of T lymphocytes: CD4+ T cells (helper T cells) and CD8+ T cells (cytotoxic T cells). Helper T cells assist in coordinating immune responses, while cytotoxic T cells directly target and destroy infected or abnormal cells. T cells also have memory subsets that provide long-term immunity. T lymphocytes play pivotal roles in defending the body against infections, regulating immune responses, and contributing to the immune system's ability to distinguish between self and non-self. Their diverse functions and clinical significance make T cells a subject of extensive research and therapeutic exploration in the field of immunology.
  • 439
  • 08 Oct 2023
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