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Topic Review
The Passage of H2O2 during Retrograde Signalling
Hydrogen peroxide (H2O2), generated during photosynthesis, is proposed to both initiate and transduce a retrograde signal in response to photoinhibitory light intensities.
  • 889
  • 25 Feb 2022
Topic Review
Disruption of Claudin-Made Tight Junction Barriers by CpE
Claudins are a family of integral membrane proteins that enable epithelial cell/cell interactions by localizing to and driving the formation of tight junctions. Via claudin self-assembly within the membranes of adjoining cells, their extracellular domains interact, forming barriers to the paracellular transport of small molecules and ions. The bacterium Clostridium perfringens causes prevalent gastrointestinal disorders in mammals by employing an enterotoxin (CpE) that targets claudins. CpE binds to claudins at or near tight junctions in the gut and disrupts their barrier function, potentially by disabling their assembly or via cell signaling means—the mechanism(s) remain unclear.
  • 889
  • 10 Mar 2022
Topic Review
Fibrin Glue and MSCs to Regenerate Nerve Injuries
Cell-based therapy is a promising treatment to favor tissue healing through less invasive strategies. Mesenchymal stem cells (MSCs) highlighted as potential candidates due to their angiogenic, anti-apoptotic and immunomodulatory properties, in addition to their ability to differentiate into several specialized cell lines. Cells can be carried through a biological delivery system, such as fibrin glue, which acts as a temporary matrix that favors cell-matrix interactions and allows local and paracrine functions of MSCs. MSCs favored axonal regeneration, remyelination of nerve fibers, as well as promoted an increase in the number of myelinated fibers, myelin sheath thickness, number of axons and expression of growth factors, with significant improvement in motor function recovery. Fibrin glue combined with MSCs has the potential to regenerate nervous system lesions.
  • 888
  • 24 Jan 2022
Topic Review
TRPC1 in Modulating Cancer Progression
Calcium ions (Ca2+) play an important role as second messengers in regulating a plethora of physiological and pathological processes, including the progression of cancer. Several selective and non-selective Ca2+-permeable ion channels are implicated in mediating Ca2+ signaling in cancer cells. In this review, we are focusing on TRPC1, a member of the TRP protein superfamily and a potential modulator of store-operated Ca2+ entry (SOCE) pathways. While TRPC1 is ubiquitously expressed in most tissues, its dysregulated activity may contribute to the hallmarks of various types of cancers, including breast cancer, pancreatic cancer, glioblastoma multiforme, lung cancer, hepatic cancer, multiple myeloma, and thyroid cancer.
  • 887
  • 27 May 2021
Topic Review
Cellular and Interaction Diversity of Tumor Microenvironment
The tumor microenvironment is a complex network of various interactions between immune cells and non-cellular components such as the extracellular matrix, exosomes and interleukins. Moreover, tumor heterogeneity and its constant modification may alter the immunophenotype and become responsible for its resistance regarding the therapies applied However, it should be remembered that in a strongly immunosuppressive neoplastic microenvironment, the immune system cells undergo reprogramming and most often cease to fulfill their original function. Therefore, understanding what happens within the tumor microenvironment, and which mechanisms are responsible for tumor development and progression should let us know how cancer could protect itself against the immune system.
  • 887
  • 12 Jul 2022
Topic Review
Functions of NLRP3 Inflammasome in Intracerebral Hemorrhage
The pathophysiological process of intracerebral hemorrhage (ICH) is very complex, involving various mechanisms such as apoptosis, oxidative stress and inflammation. As one of the key factors, the inflammatory response is responsible for the pathological process of acute brain injury and is associated with the prognosis of patients. Abnormal or dysregulated inflammatory responses after ICH can aggravate cell damage in the injured brain tissue. The NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome is a multiprotein complex distributed in the cytosol, which can be triggered by multiple signals. The NLRP3 inflammasome is activated after ICH, thus promoting neuroinflammation and aggravating brain edema.
  • 887
  • 14 Dec 2022
Topic Review
Resveratrol against Cervical Cancer
Overall, the scientific data show that resveratrol has the ability to target/inhibit certain signaling molecules (EGFR, VEGFR, PKC, JNK, ERK, NF-kB, and STAT3) involved in cervical cancer cell proliferation and survival. Further in vivo experiments and clinical studies are required to better understand the potential of resveratrol against cervical cancer.
  • 887
  • 15 Dec 2022
Topic Review
Targeting Tie2 in the Tumor Microenvironment
The dissemination of cancer cells from their original location to distant organs where they grow, a process called metastasis, causes more than 90% of cancer deaths. The identification of the molecular mechanisms of metastasis and the development of anti-metastatic therapies are essential to increase patient survival. In recent years, targeting the tumor microenvironment has become a promising avenue to prevent both tumor growth and metastasis. As the tumor microenvironment contains not only cancer cells but also blood vessels, immune cells, and other non-cancerous cells, it is naïve to think that therapy only affects a single cell type in this complex environment. Here to stress the importance, and ways to inhibit the function, of one therapeutic target: the receptor Tie2. Tie2 is a receptor present on the cell surface of several cell types within the tumor microenvironment and regulates tumor angiogenesis, growth, and metastasis to distant organs.
  • 886
  • 06 Dec 2021
Topic Review
Endothelial Autophagy in Cardiovascular Disease
Autophagy is a highly conserved process in which obsolete and dysfunctional cytoplasmic components (such as unfolded proteins, lipids, and damaged organelles) are degraded and recycled, and infectious organisms are removed by lysosomes. Deficient or uncontrolled activation of endothelial autophagy is associated with the onset and development of diverse cardiovascular diseases (CVDs), including coronary microvascular dysfunction” (CMD).
  • 886
  • 07 Jul 2022
Topic Review
Radiotracers Available for Cancer and Disease
Various factors have been linked to abnormal metabolic reprogramming, including gene mutations, epigenetic modifications, altered protein epitopes, and their involvement in the development of disease, including cancer. The presence of multiple distinct hallmarks and the resulting cellular reprogramming process have gradually revealed that these metabolism-related molecules may be able to be used to track or prevent the progression of cancer. Consequently, translational medicines have been developed using metabolic substrates, precursors, and other products depending on their biochemical mechanism of action. It is important to note that these metabolic analogs can also be used for imaging and therapeutic purposes in addition to competing for metabolic functions. In particular, due to their isotopic labeling, these compounds may also be used to localize and visualize tumor cells after uptake.
  • 886
  • 10 Feb 2023
Topic Review
ROS and Enzymatic Antioxidants in Small Domestic Ruminants
Oxygen is a fundamental element in aerobic life and oxidative metabolism representing the principal energy source for aerobic cells. Reactive oxygen species (ROS) are generated by a variety of cellular metabolic activities and as a by-product of ATP generation mediated by mitochondrial respiration. ROS are engaged in many redox-governing cell activities for the preservation of cellular homeostasis.
  • 886
  • 25 Jul 2023
Topic Review
Microglia Phenomics in Alzheimer’s Disease
Phenomics, the complexity of microglia phenotypes and their related functions compels the continuous study of microglia in disease animal models to find druggable targets for neurodegenerative disorders. Activation of microglia was long considered detrimental for neuron survival, but it has become apparent that the real scenario of microglia morphofunctional diversity is far more complex.
  • 885
  • 14 Sep 2023
Topic Review
Adipose-Derived Extracellular Vesicles Could Promote Metabolic Adaptation
Extracellular vesicles (EVs) are nanoparticles secreted by cells under physiological and pathological conditions, such as metabolic diseases. In this context, EVs are considered potential key mediators in the physiopathology of obesity. It has been reported that EVs derived from adipose tissue (ADEVs) contribute to the development of a local inflammatory response that leads to adipose tissue dysfunction. In addition, it has been proposed that EVs are associated with the onset and progression of several obesity-related metabolic diseases such as insulin resistance. In particular, characterizing the molecular fingerprint of obesity-related ADEVs can provide a bigger picture that better reflects metabolic adaptation though PI3K/Akt/mTOR.
  • 884
  • 20 Jun 2022
Topic Review
Mechanisms of Cathepsins in Non-Alcoholic Fatty Liver Disease
Cathepsins are lysosomal proteases that are essential to maintain cellular physiological homeostasis and are involved in multiple processes, such as immune and energy regulation. Cathepsins have also been involved in pathological situations, especially when they are secreted and enter the extracellular space. Non-alcoholic fatty liver disease (NASH) is a condition in which the livers of patients are afflicted by steatosis and inflammation. Cathepsins have been found to be involved in the pathology of NASH, through acting in apoptosis, metabolism and immunity. 
  • 884
  • 08 Oct 2022
Topic Review
Mammalian Acute Wound Healing
The limited ability of mammals to regenerate has garnered significant attention, particularly in regard to skin wound healing (WH), which is a critical step for regeneration. In human adults, skin WH results in the formation of scars following injury or trauma, regardless of severity. This differs significantly from the scarless WH observed in the fetal skin of mammals or anamniotes. 
  • 884
  • 24 May 2023
Topic Review
Ultrastructural Features of the Blood-Brain Barrier
The blood-brain barrier (BBB) is a dynamic barrier separating neurocytes and brain tissues from blood that is extremely sealed and strictly regulated by transporters such as aquaporin-4 (AQP-4), glucose transporter (GLUT), and specialized tight junctional complexes (TJCs) including tight junctions (TJs), adherens junctions (AJs), and Zonulae occludens (ZOs). With specifically selective transcellular and paracellular permeability, the BBB maintains a homeostatic microenvironment to protect the central nervous system (CNS).
  • 883
  • 27 Jul 2023
Topic Review
Urinary EVs in kidney-related diseases
Intercellular communication governs multicellular interactions in complex organisms. A variety of mechanisms exist through which cells can communicate, e.g., cell-cell contact, the release of paracrine/autocrine soluble molecules, or the transfer of extracellular vesicles (EVs). EVs are membrane-surrounded structures released by almost all cell types, acting both nearby and distant from their tissue/organ of origin. In the kidney, EVs are potent intercellular messengers released by all urinary system cells and are involved in cell crosstalk, contributing to physiology and pathogenesis. Moreover, urine is a reservoir of EVs coming from the circulation after crossing the glomerular filtration barrier—or originating in the kidney. Thus, urine represents an alternative source for biomarkers in kidney-related diseases, potentially replacing standard diagnostic techniques, including kidney biopsy. 
  • 882
  • 19 Jul 2021
Topic Review
Cancer-Associated Adipocytes in Cancer Progression
The tumor microenvironment (TME) plays a key role in promoting and sustaining cancer growth. Adipose tissue (AT), due to its anatomical distribution, is a prevalent component of TME, and contributes to cancer development and progression. Cancer-associated adipocytes (CAAs), reprogrammed by cancer stem cells (CSCs), drive cancer progression by releasing metabolites and inflammatory adipokines. Several mediators released by cancer-associated adipocytes are considered promising therapeutic targets for anticancer therapy.
  • 881
  • 06 Jun 2022
Topic Review
Pivotal Role of Inflammation in Celiac Disease
Celiac disease (CD) is an immune mediate disease characterised by gluten dependent T-cell mediated activation, autoimmunity and derangement of the intestinal mucosa in a specific genetic background. Although the activation of the T-cells has been studied in dept, the central question remains still unanswered, namely, why a pro-inflammatory T cell response to gluten is generated instead of a regulatory response, which normally promotes oral tolerance to dietary protein antigens. There is an inflamed environment in CD intestine, enriched in cytokines, such as IL-15, or type I interferons, in which T cells tend to acquire a pro- inflammatory phenotype. The factors that create a pro-inflammatory environment in the CD intestine, leading to an expansion of gliadin-specific T cells in genetically susceptible individuals and further shifting them towards a pro-inflammatory phenotype, remain to be identified. Gluten exacerbates these constitutive alterations, by increasing the same markers already altered before the gluten introduction, both in vitro and in vivo. All these new observations add this disease “tout court” to the big family of increasing chronic inflammatory diseases where nutrients can have pro-inflammatory or anti-inflammatory effects, directly or indirectly mediated by the intestinal microbiota, where the intestine functions as a cross road for the control of the inflammation both local and at distance.
  • 881
  • 20 Jul 2022
Topic Review
Selective Autophagy by Close Encounters
The aim of the review manuscript is to provide an over-view of the close relation between ubiquitin and the selective process of autophagy. We described how ubiquitin determine the selectivity towards different cellular component and how it may influence autophagy receptors activity. Precisely, we discussed the role of the ubiquitin signal in each type of selective autophagy.    
  • 880
  • 19 Jan 2021
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