Anti-Lin28B antibody [EPR18717] - BSA and Azide free

• Flow Cyt (Intra)

Supplier Data

Flow Cytometry (Intracellular) - Anti-Lin28B antibody [EPR18717] - BSA and Azide free (AB240326)

Intracellular flow cytometric analysis of 4% paraformaldehyde-fixed K562 (Human chronic myelogenous leukemia cells from bone marrow) cells labeling Lin28B with ab191881 at 1/150 dilution (red) compared with a rabbit monoclonal IgG isotype control (ab172730; black) and an unlabelled control (cells without incubation with primary antibody and secondary antibody; blue). Goat anti rabbit IgG (FITC) at 1/500 dilution was used as the secondary antibody.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab191881).

• ICC/IF

Supplier Data

Immunocytochemistry/ Immunofluorescence - Anti-Lin28B antibody [EPR18717] - BSA and Azide free (AB240326)

Immunofluorescent analysis of 4% paraformaldehyde-fixed, 0.1% Triton X-100 permeabilized JAR (Human placenta choriocarcinoma cell line) cells labeling Lin28B with ab191881 at 1/1000 dilution, followed by Goat anti-rabbit IgG (Alexa Fluor® 488) (ab150077) secondary antibody at 1/1000 dilution (green). Confocal image showing cytoplasm and nuclear staining on JAR cells. The nuclear counter stain is DAPI (blue). Tubulin is detected with ab7291 (anti-Tubulin mouse mAb) at 1/1000 dilution and ab150120 (AlexaFluor®594 Goat anti-Mouse secondary) at 1/1000 dilution (red).

The negative controls are as follows :
-ve control 1 : ab191881 at 1/1000 dilution followed by ab150120 (AlexaFluor®594 Goat anti-Mouse secondary) at 1/1000 dilution.
-ve control 2 : ab7291 (anti-Tubulin mouse mAb) at 1/1000 dilution followed by ab150077 (Alexa Fluor®488 Goat Anti-Rabbit IgG H&L) at 1/1000 dilution.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab191881).

• ICC/IF

Supplier Data

Immunocytochemistry/ Immunofluorescence - Anti-Lin28B antibody [EPR18717] - BSA and Azide free (AB240326)

Immunofluorescent analysis of 4% paraformaldehyde-fixed, 0.1% Triton X-100 permeabilized K562 (Human chronic myelogenous leukemia cells from bone marrow) cells labeling Lin28B with ab191881 at 1/1000 dilution, followed by Goat anti-rabbit IgG (Alexa Fluor® 488) (ab150077) secondary antibody at 1/1000 dilution (green). Confocal image showing cytoplasm and nuclear staining on K562 cells. The nuclear counter stain is DAPI (blue). Tubulin is detected with ab7291 (anti-Tubulin mouse mAb) at 1/1000 dilution and ab150120 (AlexaFluor®594 Goat anti-Mouse secondary) at 1/1000 dilution (red).

The negative controls are as follows :
-ve control 1 : ab191881 at 1/1000 dilution followed by ab150120 (AlexaFluor®594 Goat anti-Mouse secondary) at 1/1000 dilution.
-ve control 2 : ab7291 (anti-Tubulin mouse mAb) at 1/1000 dilution followed by ab150077 (Alexa Fluor®488 Goat Anti-Rabbit IgG H&L) at 1/1000 dilution.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab191881).

• IP

Supplier Data

Immunoprecipitation - Anti-Lin28B antibody [EPR18717] - BSA and Azide free (AB240326)

Lin28B was immunoprecipitated from 1mg of K562 (Human chronic myelogenous leukemia cells from bone marrow) whole cell lysate with ab191881 at 1/50 dilution. Western blot was performed from the immunoprecipitate using ab191881 at 1/1000 dilution. Anti-Rabbit IgG (HRP), specific to the non-reduced form of IgG, was used as secondary antibody at 1/1500 dilution.

Lane 1 : K562 whole cell lysate 10ug (Input).

Lane 2 : ab191881 IP in K562 whole cell lysate.

Lane 3 : Rabbit monoclonal IgG (ab172730) instead of ab191881 in K562 whole cell lysate.

Blocking and dilution buffer and concentration : 5% NFDM/TBST.

Exposure time : 5 seconds.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab191881).

All lanes:

Immunoprecipitation - Anti-Lin28B antibody [EPR18717] (<a href='/ko/products/primary-antibodies/lin28b-antibody-epr18717-ab191881'>ab191881</a>)

Predicted band size: 27 kDa

false

• WB

Lab

Western blot - Anti-Lin28B antibody [EPR18717] - BSA and Azide free (AB240326)

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab191881).

Western blot : Anti-Lin28B antibody [EPR18717] ab191881 staining at 1/2000 dilution, shown in green; Mouse anti alpha Tubulin ab7291 loading control staining at 1/20000 dilution, shown in magenta. A band was observed at 34 kDa in Wild-type A549 cell lysates with no signal observed at this size in LIN28B knockout A549 cell line. To generate this image, samples were run on an SDS-PAGE gel then transferred onto a nitrocellulose membrane. Membranes were blocked in 5pc Milk in TBS-0.1 % Tween^™ 20 (TBS-T) before incubation with primary antibodies overnight at 4 °C. Blots were washed four times in TBS-T, incubated with secondary antibodies for 1 h at room temperature, washed again four times then imaged. Secondary antibodies used were Goat anti-Rabbit 800CW and Goat anti-Mouse 680RD at 1/20,000 dilution.

All lanes:

Western blot - Anti-Lin28B antibody [EPR18717] (<a href='/ko/products/primary-antibodies/lin28b-antibody-epr18717-ab191881'>ab191881</a>) at 1/2000 dilution

Lane 1:

Wild-type A549 whole cell lysate at 20 µg

Lane 2:

Western blot - Human LIN28B knockout A549 cell line (<a href='/ko/products/cell-lines/human-lin28b-knockout-a549-cell-line-ab288867'>ab288867</a>) at 20 µg

Lane 3:

HepG2 whole cell lysate at 20 µg

Lane 4:

HeLa whole cell lysate at 20 µg

Secondary

All lanes:

Goat anti-Rabbit 800CW & Goat anti-Mouse 680RD at 1/20000 dilution

Predicted band size: 27 kDa

Observed band size: 34 kDa

false

• WB

Lab

Western blot - Anti-Lin28B antibody [EPR18717] - BSA and Azide free (AB240326)

This data was developed using the same antibody clone in a different buffer formulation (ab191881).

Lanes 1 - 4 : Merged signal (red and green). Green - ab191881 observed at 35 kDa. Red - loading control ab7291 (Mouse anti-Alpha Tubulin [DM1A]) observed at 55 kDa.

ab191881 was shown to react with Lin28B in wild-type HEK-293 cells in Western blot with loss of signal observed in LIN28B knockout sample. Wild-type HEK-293 and LIN28B knockout cell lysates were subjected to SDS-PAGE. Membranes were blocked in 3 % milk in TBS-T (0.1 % Tween^®) before incubation with ab191881 and ab7291 (Mouse anti-Alpha Tubulin [DM1A]) overnight at 4°C at a 1 in 2000 dilution and a 1 in 20000 dilution respectively. Blots were incubated with Goat anti-Rabbit IgG H&L (IRDye^® 800CW) preabsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye^® 680RD) preabsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 h at room temperature before imaging.

All lanes:

Western blot - Anti-Lin28B antibody [EPR18717] (<a href='/ko/products/primary-antibodies/lin28b-antibody-epr18717-ab191881'>ab191881</a>) at 1/2000 dilution

Lane 1:

Wild-type HEK293 cell lysate at 20 µg

Lane 2:

LIN28B knockout HEK293 cell lysate at 20 µg

Lane 3:

HepG2 cell lysate at 20 µg

Lane 4:

K562 cell lysate at 20 µg

Predicted band size: 27 kDa

Observed band size: 35 kDa

false

• WB

Lab

Western blot - Anti-Lin28B antibody [EPR18717] - BSA and Azide free (AB240326)

This data was developed using the same antibody clone in a different buffer formulation (ab191881).

Lanes 1-4 : Merged signal (red and green). Green - ab191881 observed at 36 kDa. Red - loading control ab7291 observed at 50 kDa.

ab191881 Anti-Lin28B antibody [EPR18717] was shown to specifically react with Lin28B in wild-type HEK293T cells. Loss of signal was observed when knockout cell line ab265066 (knockout cell lysate ab257504) was used. Wild-type and Lin28B knockout samples were subjected to SDS-PAGE. ab191881 and Anti-alpha Tubulin antibody [DM1A] - Loading Control (ab7291) were incubated overnight at 4°C at 1 in 1000 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-Lin28B antibody [EPR18717] (<a href='/ko/products/primary-antibodies/lin28b-antibody-epr18717-ab191881'>ab191881</a>) at 1/1000 dilution

Lane 1:

Wild-type HEK293T cell lysate at 20 µg

Lane 2:

LIN28B knockout HEK293T cell lysate at 20 µg

Lane 2:

Western blot - Human LIN28B knockout HEK-293T cell line (<a href='/ko/products/cell-lines/human-lin28b-knockout-hek-293t-cell-line-ab265066'>ab265066</a>)

Lane 3:

HepG2 cell lysate at 20 µg

Lane 4:

SW480 cell lysate at 20 µg

Secondary

All lanes:

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

Predicted band size: 27 kDa

Observed band size: 36 kDa

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