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AB265259

Human PDE4B knockout HeLa cell line

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PDE4B KO cell line available to order. KO validated by Western blot. Free of charge wild type control provided. Knockout achieved by using CRISPR/Cas9, 19 bp deletion in exon 12 and 1 bp insertion in exon 12.

View Alternative Names

5''-cyclic phosphodiesterase 4B, DKFZp686F2182, DPDE4, MGC126529, OTTHUMP00000010652, OTTHUMP00000010653, OTTHUMP00000010654, OTTHUMP00000010656, OTTHUMP00000232365, PDE IVB, PDE32, PDE4B5, PDE4B_HUMAN, Phosphodiesterase 4B, Phosphodiesterase 4B cAMP specific, Phosphodiesterase 4B, cAMP specific (phosphodiesterase E4 dunce homolog, Drosophila), cAMP-specific 3'', cAMP-specific 3',5'-cyclic phosphodiesterase 4B, cAMP-specific phosphodiesterase-4 B isoform, dunce-like phosphodiesterase E4

3 Images
Western blot - Human PDE4B knockout HeLa cell line (AB265259)
  • WB

Lab

Western blot - Human PDE4B knockout HeLa cell line (AB265259)

Lanes 1-4 : Merged signal (red and green). Green - ab170939 observed at 83 kDa. Red - loading control ab8245 observed at 36 kDa.

ab170939 Anti-PDE4B antibody [EPR11830] was shown to specifically react with PDE4B in wild-type HeLa cells. Loss of signal was observed when knockout cell line ab265259 (knockout cell lysate ab257576) was used. Wild-type and PDE4B knockout samples were subjected to SDS-PAGE. ab170939 and Anti-GAPDH antibody [6C5] - Loading Control (ab8245) were incubated overnight at 4° at 1 in 500 dilution and 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.

All lanes:

Western blot - Anti-PDE4B antibody [EPR11830] (<a href='/en-us/products/primary-antibodies/pde4b-antibody-epr11830-ab170939'>ab170939</a>) at 1/500 dilution

Lane 1:

Wild-type HeLa cell lysate at 20 µg

Lane 2:

PDE4B knockout HeLa cell lysate at 20 µg

Lane 2:

Western blot - Human PDE4B knockout HeLa cell line (ab265259)

Lane 3:

A549 cell lysate at 20 µg

Lane 4:

Mouse brain tissue lysate at 20 µg

Secondary

All lanes:

Western blot - Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-irdye-800cw-preadsorbed-ab216773'>ab216773</a>) at 1/10000 dilution

Predicted band size: 83 kDa

Observed band size: 83 kDa

false

Sanger Sequencing - Human PDE4B knockout HeLa cell line (AB265259)
  • Sanger seq

Unknown

Sanger Sequencing - Human PDE4B knockout HeLa cell line (AB265259)

Allele-2 : 1 bp insertion in exon 12.

Sanger Sequencing - Human PDE4B knockout HeLa cell line (AB265259)
  • Sanger seq

Unknown

Sanger Sequencing - Human PDE4B knockout HeLa cell line (AB265259)

Allele-1 : 19 bp deletion in exon 12.

Key facts

Cell type

HeLa

Species or organism

Human

Tissue

Cervix

Form

Liquid

form

Knockout validation

Sanger Sequencing,Western blot

Mutation description

Knockout achieved by using CRISPR/Cas9, 19 bp deletion in exon 12 and 1 bp insertion in exon 12

Disease

Adenocarcinoma

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Reactivity", "Dilution Info", "Notes"] }, "values": { "WB": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }

Product details

Recommended control: Human wild-type HeLa cell line (ab255928). Please note a wild-type cell line is not automatically included with a knockout cell line order, if required please add recommended wild-type cell line at no additional cost using the code WILDTYPE-TMTK1.

We will provide viable cells that proliferate on revival.

This product is subject to limited use licenses from The Broad Institute, ERS Genomics Limited and Sigma-Aldrich Co. LLC, and is developed with patented technology. For full details of the licenses and patents please refer to our limited use license and patent pages.

What's included?

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Properties and storage information

Gene name
PDE4B
Gene editing type
Knockout
Gene editing method
CRISPR technology
Knockout validation
Sanger Sequencing, Western blot
Shipped at conditions
Dry Ice
Appropriate short-term storage conditions
-196°C
Appropriate long-term storage conditions
-196°C

Handling procedures

Initial handling guidelines

Upon arrival, the vial should be stored in liquid nitrogen vapor phase and not at -80°C. Storage at -80°C may result in loss of viability.

1. Thaw the vial in 37°C water bath for approximately 1-2 minutes.
2. Transfer the cell suspension (0.8 mL) to a 15 mL/50 mL conical sterile polypropylene centrifuge tube containing 8.4 mL pre-warmed culture medium, wash vial with an additional 0.8 mL culture medium (total volume 10 mL) to collect remaining cells, and centrifuge at 201 x g (rcf) for 5 minutes at room temperature. 10 mL represents minimum recommended dilution. 20 mL represents maximum recommended dilution.
3. Resuspend the cell pellet in 5 mL pre-warmed culture medium and count using a haemocytometer or alternative cell counting method seed all remaining cells into a T25.
4. Incubate the culture at 37°C incubator with 5% CO2. Check the culture one day after revival and continue to check until 80% confluent. Media change can be given if needed.
5. Once confluent passage into an appropriate flask at a density of 2x104 cells/cm2. Seeding density is given as a guide only and should be scaled to align with individual lab schedules. Cultures should be monitored daily.

Subculture guidelines
  • All seeding densities should be based on cell counts gained by established methods.
  • A guide seeding density of 2x104 cells/cm2 is recommended.
  • Cells should be passaged when they have achieved 80-90% confluence.
Culture medium

DMEM (High Glucose) + 10% FBS

Cryopreservation medium

Cell Freezing Medium-DMSO Serum free media, contains 8.7% DMSO in MEM supplemented with methyl cellulose.

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Phosphodiesterase 4B (PDE4B) also known as PDE4B2 is an enzyme that specifically breaks down cyclic adenosine monophosphate (cAMP) to AMP an important process in cellular signaling. It belongs to the PDE4 family which is characterized by its ability to regulate the concentration of cAMP within cells. PDE4B has a molecular mass of approximately 75 kDa and is frequently expressed in immune cells including monocytes and neutrophils as well as in the brain.
Biological function summary

PDE4B plays a significant role in modulating intracellular signaling by controlling the levels of cAMP a second messenger involved in various cellular processes. As part of the larger PDE4 family complex PDE4B assists in fine-tuning immune responses and inflammatory processes. This enzyme modulates the activity of protein kinase A (PKA) impacting processes such as cell proliferation differentiation and apoptosis.

Pathways

PDE4B operates within the cAMP signaling pathway which is essential for transducing extracellular signals into cellular responses. This pathway involves interaction with other proteins such as PKA and CREB (cAMP response element-binding protein) which are critical for regulating gene expression and cellular functions. PDE4B's ability to modulate this pathway makes it fundamental in controlling the dynamics of cellular signaling.

PDE4B has been associated with inflammatory diseases such as asthma and chronic obstructive pulmonary disease (COPD). Its involvement in regulating cAMP levels affects the inflammatory response linking it to the pathogenesis of these conditions. Additionally PDE4B influences the activity of inflammatory mediators and cytokines contributing to disease progression and symptoms. For example PDE4 inhibitors can modulate these pathways presenting potential therapeutic opportunities for managing related inflammatory disorders.

Quality control

STR analysis

CSF1PO, D13S317, D7S820, D5S818, TH01, D16S539, TPOX

Cell culture

Biosafety level

EU: 2 US: 2

Adherent/suspension

Adherent

Gender

Female

Product protocols

Product promise

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