| 1990 |
BTF3 forms a stable complex with RNA polymerase II. Two isoforms exist: BTF3a (27 kDa, transcriptionally active) and BTF3b (lacking the first 44 residues of BTF3a, transcriptionally inactive despite retaining RNA pol II binding ability). |
Protein purification, cDNA cloning, in vitro complex formation assay |
Nature |
High |
2320128
|
| 1992 |
The BTF3 gene contains seven exons; BTF3a and BTF3b are products of alternative splicing from the same gene. A putative TATA box(es) and CAAT box were identified in the promoter region. |
Genomic cloning, cDNA library screening, sequence analysis |
Gene |
Medium |
1386332
|
| 1992 |
Yeast homolog of BTF3 (EGD1/Egd1p) stabilizes the Gal4p transcriptional activator-DNA complex (gel retardation assay); loss of EGD1 reduces galactose-regulated gene induction, placing BTF3 homolog as a co-activator facilitating transcription factor-DNA interaction. |
Filter binding, footprinting, gel retardation, gene disruption, purification |
Molecular and cellular biology |
High |
1448098
|
| 1994 |
Yeast BTF3 homologs (Egd1p and Btt1p) have redundant functions; double deletion elevates GAL1, GAL10, ACT1, and SSO1 mRNA levels (RNA pol II transcribed genes) but not rRNA or tRNA, indicating a negative regulatory role on RNA pol II transcription. |
Gene disruption, mRNA expression analysis |
Nucleic acids research |
Medium |
8052529
|
| 1995 |
Homozygous disruption of the BTF3 gene in mice causes lethality at embryonic day ~6.5 (early postimplantation), establishing BTF3 as essential for early postimplantation development. |
Retroviral gene trap insertional mutagenesis, germline transmission, embryo analysis |
Transgenic research |
High |
7655515
|
| 1999 |
BTF3a is phosphorylated in vitro by the CK2 α2β2 holoenzyme (but not by α or α' alone), and physically interacts with CK2 subunit β both in yeast two-hybrid and GST pulldown/co-immunoprecipitation assays, identifying BTF3a as a CK2 substrate requiring the β subunit for recognition. |
Yeast two-hybrid, GST pulldown, co-immunoprecipitation, in vitro kinase assay |
Molecular and cellular biochemistry |
Medium |
10094400
|
| 2007 |
BTF3 silencing in pancreatic cancer cells down-regulates cancer-associated genes (EPHB2, ABL2, HPSE2, ATM) and up-regulates others (KRAG, RRAS2, NF-κB, etc.) without affecting chemotherapy- or radiotherapy-induced apoptosis, supporting a role as a transcriptional regulator rather than direct apoptosis modulator in this context. |
siRNA knockdown, DNA microarray analysis, cell growth and apoptosis assays |
Cancer biology & therapy |
Medium |
17312387
|
| 2019 |
BTF3 stabilizes BMI1 protein in prostate cancer cells; BTF3 loss reduces BMI1 levels and impairs cancer stem-like self-renewal and metastatic potential, while BTF3 overexpression promotes these traits. |
Gain- and loss-of-function (ectopic overexpression and shRNA), in vitro and in vivo tumorigenic/stemness assays, immunofluorescence |
Journal of experimental & clinical cancer research |
Medium |
31138311
|
| 2020 |
BTF3 knockdown in TNBC cells increases BMI1 protein degradation, leading to de-repression of IRF7 transcription and activation of the Type I interferon signaling pathway, linking BTF3-mediated stemness to immune evasion. |
shRNA knockdown, bioinformatics, western blot, transcriptional reporter analysis |
Biochemical and biophysical research communications |
Medium |
33383560
|
| 2021 |
BTF3b (but not BTF3a) transcriptionally upregulates RFC (Replication Factor C) family subunit genes involved in DNA replication and damage repair; BTF3 knockdown reduces RFC expression, attenuates DNA replication, impairs DNA damage repair, and increases G2/M arrest. RFC3 knockdown diminishes the growth advantage conferred by BTF3b overexpression. |
Isoform-specific overexpression/knockdown, reporter assay, cell cycle analysis, DNA damage assay, in vitro and in vivo cisplatin sensitivity |
Cell death & disease |
Medium |
33414468
|
| 2021 |
BTF3 transcriptionally targets CHD1L (identified by RNA-seq + ChIP-seq); BTF3 also interacts with proteins in the nascent-polypeptide-associated complex (NAC) and may inhibit E3 ubiquitin ligase HERC2-mediated p53 degradation (identified by IP-MS and E3 ligase analysis). |
RNA-seq, ChIP-seq, immunoprecipitation-mass spectrometry, E3 ubiquitin ligase analysis |
Frontiers in cell and developmental biology |
Medium |
33644029
|
| 2021 |
BTF3 regulates BMI1 expression in colorectal cancer; BMI1 overexpression partially rescues stem cell-like traits and EMT after BTF3 knockdown, placing BTF3 upstream of BMI1 in control of CRC stemness and epithelial-mesenchymal transition. |
siRNA knockdown, rescue overexpression, BMI1 inhibitor (PTC-209) treatment, stemness assays (CD133, colony formation, tumorosphere), EMT marker expression |
International journal of biological macromolecules |
Medium |
34293363
|
| 2018 |
BTF3 regulates ESR1 (ERα) transcriptional expression in luminal breast cancer cells; BTF3 knockdown reduces ERα-dependent transcription and sensitizes ER+ cells to PI3Kα inhibitor BYL-719 both in vitro and in vivo. |
shRNA knockdown, transcriptional reporter assay, gene expression analysis, in vitro and in vivo drug sensitivity assays |
Cancer letters |
Medium |
30315845
|
| 2023 |
BTF3 directly interacts with FOXM1 in HCC cells (co-immunoprecipitation) and transcriptionally activates FOXM1; BTF3 knockdown reduces FOXM1 and GLUT1 expression, attenuating glycolysis (ECAR, glucose consumption, lactate production). FOXM1 overexpression rescues glycolytic activity in BTF3-knockdown cells. |
Co-immunoprecipitation, dual-luciferase reporter assay, siRNA knockdown, FOXM1 rescue overexpression, XF96 extracellular flux analysis, xenograft model |
Cancer biology & therapy |
Medium |
37382415
|
| 2024 |
BTF3 forms a complex with STAT3 in monocytes (co-immunoprecipitation); this BTF3/STAT3 complex promotes STAT3 phosphorylation, which activates NLRP3 promoter-driven pyroptosis and apoptosis. BTF3 depletion inhibits STAT3 phosphorylation and suppresses pyroptosis. |
Co-immunoprecipitation, chromatin immunoprecipitation, luciferase reporter, RNA immunoprecipitation, RNA pull-down, CRISPR/siRNA knockdown, flow cytometry |
Clinical and translational medicine |
Medium |
38224186
|
| 2019 |
BTF3a knockdown (CRISPR/Cas9) in THP-1-derived macrophages increases autophagy flux and lysosomal targeting of Mycobacterium tuberculosis-containing autophagosomes, resulting in enhanced intracellular Mtb clearance. Mtb infection upregulates BTF3a expression in macrophages. |
CRISPR/Cas9 knockdown, LC3B-II turnover assay, LAMP1 expression, confocal microscopy (LC3B/lysotracker/Rab7 colocalization), CFU assay |
Life sciences |
Medium |
30684544
|
| 2024 |
BTF3 transcriptionally upregulates PDCD2L in hepatocellular carcinoma; PDCD2L in turn restrains the p53 pathway to promote proliferation and inhibit apoptosis. BTF3 knockdown inhibits proliferation and promotes apoptosis in HCC cells. |
Knockdown experiments, transcriptional analysis, cell function assays (proliferation, apoptosis), p53 pathway readout |
Molecular medicine |
Low |
39707202
|
| 2025 |
BTF3 is recruited by LINC00622 lncRNA to the RRAGD promoter to transcriptionally enhance RRAGD expression, activating mTORC1 and suppressing autophagic cell death in cutaneous melanoma. |
ChIP, co-immunoprecipitation, reporter assays, loss-of-function knockdown, in vitro and in vivo tumor models |
Cell death & disease |
Medium |
40651979
|
| 2025 |
RPL18 stabilizes BTF3 mRNA, increasing BTF3 protein levels and downstream STAT3 activation, promoting melanoma proliferation, migration, and temozolomide resistance. Pharmacologic STAT3 inhibition reverses RPL18-dependent oncogenic phenotypes. |
Melanoma cell lines, patient-derived organoids, xenograft models, STAT3 inhibitor treatment, mRNA stability assay (implied), western blot |
iScience |
Low |
41550725
|
| 2019 |
BTF3 knockdown in osteosarcoma (Saos-2) cells activates STAT3, S6 ribosomal protein, HSP27, and SAPK/JNK2 (all inhibited by BTF3 silencing), while SAPK/JNK1 is upregulated, identifying these as signaling mediators downstream of BTF3. |
Lentivirus shRNA knockdown, PathScan Intracellular Signaling Array, flow cytometry, colony formation assay |
Journal of Cancer |
Low |
31205542
|