DOK2 Knockout BEAS-2B Cell Line

The choice depends on whether you are studying DOK2 (downstream of tyrosine kinase 2)'s role as a Src-family kinase negative regulator or modeling its functions in lung cancer tumor suppression. The Knockout line is the standard tool for asking whether DOK2 is required for these processes — DOK2 is a member of the DOK family of adapter proteins (DOK1-7) with PH domain (membrane recruitment), PTB domain (phospho-tyrosine binding), and C-terminal proline-rich region; DOK2 functions as a negative regulator of Src-family kinase and RAS-MAPK signaling in hematopoietic and lung epithelial contexts. Overexpression is useful for studying DOK2 in heterologous expression contexts. For lung cancer research, the EDITGENE DOK2 Knockout in BEAS-2B is highly relevant — BEAS-2B is a normal human bronchial epithelial cell line, and DOK2 has been characterized as a lung tumor suppressor that is frequently lost or mutated in lung adenocarcinoma. Rescue with wild-type DOK2 is the standard specificity control. The knockout is valuable for studying DOK family adapter biology, lung tumor suppressor mechanisms, and emerging therapeutic strategies for DOK2-low lung cancers.

Primary applications: • Src-family kinase signaling: SFK activity (phospho-Src Y416) and substrate phosphorylation analysis in DOK2-null bronchial epithelial cells. • Lung tumor suppressor biology: proliferation, transformation, and lung adenocarcinoma-relevant phenotypes given DOK2's lung tumor suppressor role. • DOK family dissection: DOK1, DOK3, DOK4-7 expression analysis to interpret DOK2-specific functions. • RAS-MAPK pathway analysis: phospho-ERK and downstream signaling given DOK2's role in MAPK negative regulation. EDITGENE recommends this BEAS-2B-based model for researchers investigating DOK2 lung tumor suppressor biology and emerging therapeutic strategies.

Yes. DOK2 rescue experiments require attention to adapter protein architecture: • Construct design: use a codon-modified DOK2 sequence with a small C-terminal tag (FLAG, HA). DOK2 has N-terminal PH domain (membrane recruitment), PTB domain (phospho-tyrosine binding), and C-terminal proline-rich region with multiple tyrosine phosphorylation sites — preserve all elements. • PH-domain-mutant rescue: PH domain mutations disrupt membrane recruitment. • PTB-domain-mutant rescue: PTB domain mutations disrupt phospho-tyrosine binding for substrate recognition studies. • Functional readout: rescue should restore SFK negative regulation and reduced phospho-ERK in lung epithelial context. BEAS-2B-specific considerations: • BEAS-2B is a SV40-immortalized normal human bronchial epithelial cell line — widely used for respiratory epithelial biology and airway disease research. • Lentiviral transduction is supported but may require optimization compared to standard transformed cell lines.