Results 71 to 80 of about 45,103 (233)

Reprogramming Antitumor Immunity: NK Cell Strategies to Navigate the Immunosuppressive Tumor Microenvironment

open access: yesAdvanced Science, EarlyView.
ABSTRACT Tumor immune escape is a major barrier to durable cancer immunotherapy, as advanced malignancies create a tumor microenvironment (TME) that preferentially exhausts and disables T cell responses. While most approved cell therapies are T cell‐based, this limitation motivates the exploration of an alternative effector cell platform.
Tereza Kochs   +4 more
wiley   +1 more source

Human Telomerase Activation Requires Two Independent Interactions between Telomerase RNA and Telomerase Reverse Transcriptase [PDF]

open access: yesMolecular Cell, 2000
Inhibition or activation of the reverse transcriptase telomerase can profoundly affect the proliferative capacity of normal cells and cancers. Here, we elucidate structural requirements for function of the essential RNA component of human telomerase, hTR.
Mitchell, James R., Collins, Kathleen
openaire   +2 more sources

The association between telomerase activity and expression of its RNA component (hTR) in breast cancer patients: the importance of DNase treatment [PDF]

open access: yes
Telomerase is a ribonucleoprotein enzyme that compensates for the telomere length shortening which occurs during the cell cycle. Telomerase activity has been detected in most tumours but not in somatic cells.
حسینی اصل, سید سعید   +5 more
core   +1 more source

Telomeres in Evolution and Development from Biosemiotic Perspective [PDF]

open access: yes, 2007
Telomeres identify natural chromosome ends being different from broken DNA through differences in their "molecular syntax" (M.Eigen) which determines the functions of reverse transcriptase and its integrated RNA template, telomerase.
Guenther Witzany
core   +3 more sources

NUAK2 Inhibition Enhances Macromolecular Drug Delivery in a 3D Fibrotic Model of the Pancreatic Tumor Microenvironment

open access: yesAdvanced NanoBiomed Research, EarlyView.
Using a 3D cell culture model of the fibrotic barrier in pancreatic cancer, this work shows that inhibiting NUAK2 kinase in pancreatic stellate cells enhances macromolecular drug delivery. Mechanistically, NUAK2 inhibition disrupted actin stress fiber assembly to downregulate collagen I expression, thus enhancing macromolecular permeability.
Misaki Nakamura   +14 more
wiley   +1 more source

The Status of Telomerase Enzyme Activity in Benign and Malignant Gynaecologic Pathologies

open access: yesBalkan Medical Journal, 2013
Background: Telomeres are essential for the function and stability of eukaryotic chromosomes. Telomerase consists of three subunits: human telomerase reverse transcriptase (hTERT), human telomerase RNA (hTR), and telomerase protein 1 (TP1).
İlhami Gül   +4 more
doaj   +1 more source

Alternatively Spliced Telomerase Reverse Transcriptase Variants Lacking Telomerase Activity Stimulate Cell Proliferation [PDF]

open access: yesMolecular and Cellular Biology, 2012
Eight human and six chicken novel alternatively spliced (AS) variants of telomerase reverse transcriptase (TERT) were identified, including a human variant (Δ4-13) containing an in-frame deletion which removed exons 4 through 13, encoding the catalytic domain of telomerase.
Radmila, Hrdlicková   +2 more
openaire   +2 more sources

Multimaterial Triphasic Scaffold Replicates Enthesis Microenvironment to Modulate Early Cell Responses

open access: yesAdvanced NanoBiomed Research, EarlyView.
A bioinspired triphasic scaffold integrating 3D printed polycaprolactone and electrospun poly(lactic‐co‐glycolic acid) is developed to replicate the organization of the tendon‐to‐bone enthesis. Cyclic mechanical stimulation induces spatially defined cell morphology and lineage‐related gene expression in human mesenchymal stem cells, highlighting the ...
Ginevra Pegollo   +7 more
wiley   +1 more source

CHIP Promotes Human Telomerase Reverse Transcriptase Degradation and Negatively Regulates Telomerase Activity [PDF]

open access: yesJournal of Biological Chemistry, 2010
The maintenance of eukaryotic telomeres requires telomerase, which is minimally composed of a telomerase reverse transcriptase (TERT) and an associated RNA component. Telomerase activity is tightly regulated by expression of human (h) TERT at both the transcriptional and post-translational levels.
Ji Hoon, Lee   +3 more
openaire   +2 more sources

Long Noncoding RNA H19 Mediates STAT3‐Dependent Activation of Keratinocytes and Fibroblasts in Systemic Sclerosis Skin

open access: yesArthritis &Rheumatology, EarlyView.
Objective Dermal systemic sclerosis (SSc) fibroblasts and their exosomes can activate keratinocytes in SSc, with long noncoding RNA (lncRNA) H19 highlighted as the most up‐regulated RNA in their cargo compared with healthy controls (HCs). The role of H19 in SSc pathogenesis has never been investigated.
Begoña Caballero‐Ruiz   +3 more
wiley   +1 more source

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