SDC1 Knockout Cell Line (A549)

The choice depends on whether you are studying SDC1 (Syndecan-1, CD138)'s role as a heparan sulfate proteoglycan involved in growth factor signaling, cell adhesion, and matrix interactions, or its emerging functions in cancer biology and viral entry. The Knockout line is the standard tool for asking whether SDC1 is required for these processes — particularly relevant in A-549, where SDC1 has been implicated in lung cancer biology and serves as the principal SARS-CoV-2 attachment factor through its heparan sulfate chains. Overexpression is useful for studying SDC1's role in growth factor sequestration (FGF2 reservoirs) or as a co-receptor. For SDC1 research, the EDITGENE Knockout in A-549 is highly informative — A-549 is an established lung cancer model and a workhorse for respiratory virus research, including SARS-CoV-2 entry mechanisms. Rescue with wild-type or HS-chain-deficient (HS-attachment site mutant) SDC1 enables structure-function studies separating heparan sulfate chain functions from the core protein. SDC1 is a clinical multiple myeloma marker (CD138) and an emerging cancer therapeutic target (indatuximab ravtansine ADC).

Primary applications: • Heparan sulfate-dependent processes: FGF2/FGFR signaling assays, growth factor binding studies, and matrix interactions given SDC1's role as a heparan sulfate proteoglycan. • SARS-CoV-2 attachment studies: viral attachment and entry assays in A-549 — SDC1 heparan sulfate chains have been identified as principal SARS-CoV-2 spike attachment factors. • Lung cancer biology: proliferation, migration, invasion, and EMT marker analysis given SDC1's emerging role in lung cancer progression. • Indatuximab ravtansine specificity: critical genetic control for SDC1/CD138-targeting ADCs in multiple myeloma and emerging solid tumor indications. EDITGENE recommends this model for researchers investigating heparan sulfate proteoglycan biology, lung cancer mechanisms, and respiratory virus host factors.

Yes. SDC1 rescue experiments require attention to heparan sulfate biology: • Construct design: use a codon-modified SDC1 sequence with a small intracellular C-terminal tag (FLAG, HA). SDC1 is a type I membrane protein with an N-terminal extracellular domain containing HS attachment sites and a short cytoplasmic C-terminal tail. • HS-deficient rescue: HS-attachment site mutations (typically S37A/S45A/S47A) abolish heparan sulfate chain attachment and serve as the standard control for distinguishing HS-mediated functions from core protein functions. • Shedding-resistant rescue: ADAM17/MMP-resistant mutations enable studies of full-length versus shed SDC1 functions. • Functional readout: rescue should restore HS-dependent FGF2 binding/signaling, SARS-CoV-2 spike attachment, and other heparan sulfate-mediated activities. A-549 transduces efficiently with lentivirus and supports stable rescue line generation.