Tag Archives: apoptosis

Conflicting pro- and anti-tumoral reports of the clock transcription factor BHLHE41 involvement in oncogenesis at the advent of spatiotemporal multiomics

DOI: 10.2478/amma-2026-0012

The bHLH-Orange transcriptional repressor BHLHE41 is considered a member of the fifth clock gene family. Diverse mechanisms of gene expression regulation and interaction with numerous transcription factors, epigenetic modifiers and master regulators often in feedback loops characterize BHLHE41 activity. BHLHE41 may be involved in oncogenesis by various mechanisms due to its pleiotropic functions. Responsive to various signals such as hypoxia or chemotherapeutics, BHLHE1 controls cell fate as a regulator of proliferation, differentiation, DNA damage repair and apoptosis. Conflicting reports of pro- and anti-tumoral effects suggest context-dependent and tumor-specific effects. BHLHE1 involvement in key mechanisms repeatedly reported include the hypoxia response and the inhibition of apoptosis and epithelial-mesenchymal transition. The sensitive balance between BHLHE41 and its paralog BHLHE40, characterized by shared and non-redundant complementary or opposing moonlighting functions, may be critical in oncogenesis. Addressing the functional complexity and heterogeneity as well as the short and long term dynamics of BHLHE41 biology by emerging spatial and temporal omics technologies may be of practical importance for precision oncology and personalized care, drug development and selection, early diagnosis and patient monitoring, or chrono-chemotherapy.

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Recent progress in apoptosis triggering facilitated by HeLa Studies

DOI: 10.2478/amma-2023-0022

Objective: Cancer is a leading cause of death globally, prompting numerous efforts to find effective treatments. HeLa cells, derived from Henrietta Lacks’ cancerous squamous cells, have played a crucial role in cancer research due to their origin, resistance, and rapid growth. They are particularly useful for studying ways of cellular death triggering, or apoptosis, without an immune response. Thus, the objective of this paper was to review the latest publications on the subject of HeLa apoptosis so that a brief view to be available on the otherwise so extended subject.
Methodology: To provide a concise review of the extensive research on this topic, a search was conducted using the phrase “HeLa cells apoptosis triggering” on PubMed. The articles that were published in English, in the last 6 years, presenting results sustained by valid morphological and chemical apoptotic changes present in cells, were selected and reviewed. A comprehensive table presenting the apoptotic mechanism exerted by each substance was made to assure a concise presentation of the results.
Results: The reviewed studies have shown that many natural substances exhibit pro-apoptotic activity on malignant cells and can be used as chemotherapeutic agents. Some synthetic molecules were showed to have good results too. Important facts about these substances, their intervention site and metabolic modifications are presented in a concise form. The use of nano-carriers for targeted delivery was shown to increase their specificity towards cancerous cells.
Conclusions: HeLa cells were a groundbreaking discovery that revolutionized scientific research. Although there is ongoing research towards cancer cures using HeLa cells, there are still many trials and considerations that need to be addressed. With the countless existing HeLa cell lines, the scientific possibilities for research are endless.

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