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480-510 / 1000+ resultsresearch Ornithine Decarboxylase Overexpression Is a Sufficient Condition for Tumor Promotion in Mouse Skin
In this study, researchers investigated whether overexpression of ornithine decarboxylase (ODC) was sufficient for tumor promotion in mouse skin. They used transgenic mice with high ODC expression in epidermal keratinocytes and found that these mice were more sensitive to carcinogen initiation compared to controls. Notably, mice with ODC overexpression in hair follicle keratinocytes developed tumors without the need for additional tumor promoters. The study concluded that ODC overexpression was sufficient to activate target cells in hair follicles, leading to clonal expansion and epidermal tumor formation, indicating that hair follicles are key sites for chemical carcinogen targeting in the skin.
research Activated Polyamine Catabolism Depletes Acetyl-CoA Pools and Suppresses Prostate Tumor Growth in TRAMP Mice
The study explored the impact of overexpressing the enzyme spermidine/spermine N1-acetyltransferase (SSAT) in TRAMP mice, a model for prostate cancer. By cross-breeding these mice with SSAT-overexpressing mice, researchers observed a significant reduction in tumor growth, with genitourinary tract weights being 4 to 12 times less than in TRAMP mice alone by 30 to 36 weeks of age. This tumor suppression was attributed to increased polyamine catabolism, which depleted acetyl-CoA and S-adenosylmethionine, despite increased polyamine biosynthesis. Histopathological analysis showed less advanced tumors in TRAMP/SSAT mice, suggesting that SSAT overexpression could be a promising therapeutic strategy for prostate cancer. Additionally, a genitourinary disease index was developed to assess the treatment's impact, particularly in the C57BL/6 mouse background.
research Selenium or No Selenium: That Is the Question in Tumor Patients - A New Controversy
There is no clear recommendation for using selenium in cancer patients; it may be beneficial to correct low selenium levels before treatment.
research Mouse Intestinal Krt15+ Crypt Cells Are Radio-Resistant and Tumor Initiating
Krt15+ cells in the mouse intestine resist radiation and can start tumors.
research Disruption of Tubular Flcn Expression as a Mouse Model for Renal Tumor Induction
Disrupting the Flcn gene in mice causes early kidney cysts and tumors, which can be treated with rapamycin.
research The Effect of Mushroom Beta-Glucans from Solid Culture of Ganoderma Lucidum on Inhibition of the Primary Tumor Metastasis
Mushroom beta-glucans from Ganoderma lucidum can reduce tumor size and metastasis in cancer.
research The Investigation and Management of Severe Hyperandrogenism Pre- and Postmenopause: Non-Tumor Disease Is Strongly Associated with Metabolic Syndrome and Typically Responds to Insulin-Sensitization with Metformin
High levels of male hormones in women without tumors are linked to metabolic problems and can be treated with metformin.
research Hair Shaft miRNA-221 Levels as a New Tumor Marker of Malignant Melanoma
Hair shaft miR-221 levels can help detect malignant melanoma.
research Finasteride Blocks Progesterone Synthesis in MA-10 Leydig Tumor Cells
research Design, Synthesis and Anti-Tumor Evaluation of Novel Thiohydantoin Congeners as Androgen Receptor Antagonists With In Vivo Study
A new compound, 3a, effectively fights prostate cancer better than finasteride.
research Diabetes, Ovarian Tumor, Hyperparathyroidism, and Papillary Cancer: A Chance Association?
The woman's rare combination of diseases suggests an unknown factor may predispose individuals to multiple endocrine diseases.
research Mitogen-Regulated Protein/Proliferin mRNA Induction Following Single Applications of Tumor Promoters to Murine Skin
The study investigated the response of mitogen-regulated protein/proliferin (mrp/plf) gene family transcripts to tumor promoters in SENCAR mice. After applying tumor promoters like TPA and BPO to the skin, researchers observed significant increases in mRNAs for genes such as ornithine decarboxylase, junB, and egr1, particularly in response to TPA. Although mrp/plf-mRNA was not detected in Northern blot hybridizations, it was identified using RT-PCR in most TPA-treated and some BPO-treated animals. The predominant mRNA species were plf1 and mrp3. The study concluded that mrp/plf-mRNA was differentially expressed in response to tumor promoters and could serve as a biomarker for tumor-promoting effects in chemical carcinogenesis.
research The Vitamin D Receptor Is a Wnt Effector That Controls Hair Follicle Differentiation and Specifies Tumor Type in Adult Epidermis
Vitamin D receptor helps control hair growth and could be used to treat certain skin tumors.
research Folliculin, the Product of the Birt-Hogg-Dube Tumor Suppressor Gene, Interacts with the Adherens Junction Protein p0071 to Regulate Cell-Cell Adhesion
The protein folliculin, involved in a rare disease, works with another protein to control how cells stick together and their organization, and changes in this interaction can lead to disease symptoms.
research 5α-Reductase Inhibitors, Antiviral and Anti-Tumor Activities of Some Steroidal Cyanopyridinone Derivatives
Some newly made compounds are promising for treating enlarged prostate, hair loss, viruses, and prostate cancer, and might be better than current drugs.
research Effect of the Dual 5α-Reductase Inhibitor Dutasteride on Markers of Tumor Regression in Prostate Cancer
Dutasteride may help shrink prostate cancer tumors.
research Features of Structure of External Layer of Murine Hair at Different Stages of Malignant Tumor Development
Hair structure worsens as tumors grow in mice.
research Inferring Spatially Resolved Transcriptomics Data from Whole Slide Images for the Assessment of Colorectal Tumor Metastasis: A Feasibility Study
Using deep learning to predict gene expression from images could help assess colorectal cancer metastasis.
research Dermatologic Toxicities Associated with Chronic Gamma-Secretase Inhibitor Treatment for Desmoid Tumor
Most patients experienced mild to moderate skin problems during a trial for a desmoid tumor treatment.
research Effect of the Dual 5α-Reductase Inhibitor Dutasteride on Markers of Tumor Regression in Prostate Cancer
Dutasteride may help treat prostate cancer by causing cancer cells to shrink and die.
research Phosphodiesterase Inhibitors Used in Androgenic Alopecia as a Possible Risk Factor for Testicular Tumor
research Clinical Management of Patients with ASXL1 Mutations and Bohring-Opitz Syndrome, Emphasizing the Need for Wilms Tumor Surveillance
Patients with Bohring-Opitz syndrome and ASXL1 mutations need regular kidney ultrasounds to check for tumors.
research Rooster Feathering, Androgenic Alopecia, And Hormone-Dependent Tumor Growth: What Is In Common?
Sex hormones affect hair and feather growth and may help manage alopecia and hormone-dependent cancers.
research Semecarpus Anacardium Linn. Leaf Extract Exhibits Activities Against Breast Cancer And Prolongs The Survival Of Tumor-Bearing Mice
Semecarpus anacardium leaf extract fights breast cancer and extends survival in mice.
research Hair Follicle Stem Cells: Their Location, Role in Hair Cycle, and Involvement in Skin Tumor Formation
research Biological, Cellular, And Molecular Characteristics Of An Inducible Transgenic Skin Tumor Model: A Review
research Stem Cell Heterogeneity and Plasticity in Epithelia
Different types of stem cells exist within individual skin layers, and they can adapt to damage, transplantation, or tumor growth. These cells are regulated by their environment and genetic factors. Tumor growth is driven by expanding, genetically altered cells, not long-lived mutant stem cells. There's evidence of cancer stem cells in skin tumors. Other cells, bacteria, and genetic factors help maintain balance and contribute to disease progression. A method for growing mini organs from single cells has been developed.
research Development of Heritable Melanoma in Transgenic Mice
The transgene likely activated an oncogene or interrupted a tumor suppressor gene, causing melanoma in mice.
research The Senescence–Stemness Alliance: A Cancer-Hijacked Regeneration Principle
Cancer can hijack the body's cell repair system to promote tumor growth, and targeting this process may improve cancer treatments.