Chapter Four · failure evidence
What Gel Electrophoresis & Blot Transfer got wrong, from 43 dissertations
Gel electrophoresis and blotting methods frequently encounter detection limits, transfer inefficiencies, and target binding problems across diverse biological samples. Researchers often face high background noise, sample consumption hurdles, or denaturing artifacts that prompt transitions to alternative analytical techniques. These records come from PhD theses at 17 institutions, 2021 to 2026. Each links to its thesis. They were extracted by language models reading the full text, so treat each as a lead to read, not a verdict.
Antibodies fail to bind targets specifically or recognize denatured epitopes on blots
Commercial or custom antibodies frequently exhibited poor binding affinity, lacked target specificity, or failed to detect denatured antigens during Western blotting. These antibody detection failures prevented the identification of tagged proteins, specific isoforms, and recombinant targets in cell extracts.
Tried and failed
Western blot protein quantification and validation applied to target protein in human tissue samples. Outcome: no signal. Reason: Lack of a specific and reliable antibody for target protein detection
The Association of Steroid 5-Alpha Reductase Type 2 and Estrogen Receptors in the Prostate · Harvard
Tried and failed
western blot protein detection applied to differentiated neuronal cell lysates. Outcome: no signal. Reason: target protein was below the limit of detection or antibody lacked sufficient binding affinity
Tried and failed
epitope-tagged protein detection via western blot applied to embryo cell lysates. Outcome: no signal. Reason: antibodies failed to produce detectable signal from tagged target protein in lysates
The discovery of novel proteins involved in cell polarity and the PAR complex in c. elegans · UT Austin
Tried and failed
monoclonal antibody detection via western blotting applied to target protein in cell lysates. Outcome: no signal. Reason: specific antibody clones failed to bind denatured antigen in western blot assays
Novel Agonist TREM2 Monoclonal Antibodies Activate Syk-Associated Cell Signaling Pathways · Harvard
Tried and failed
commercial antibody western blotting and co-immunoprecipitation applied to receptor-associated kinase interaction detection. Outcome: no signal. Reason: antibodies lacked specificity on western blot and failed to enrich target protein above background in lysates
Retrotransposable element co-option in the evolution of immune networks · Imperial
Tried and failed
immunoblotting with custom polyclonal antibodies applied to target protein detection in whole-cell lysates. Outcome: no signal. Reason: antibodies lacked sufficient affinity or specificity to detect target directly without prior immunoprecipitation enrichment
Tried and failed
polyclonal antibody western blot detection applied to specific protein isoform in whole lysates. Outcome: no signal. Reason: antibody failed to detect the target protein isoform in mixed embryo extracts
The Pro-Apoptotic Function of CED-9 Requires a CED-9-CED-4 Interaction · MIT
Considered and rejected
Considered and rejected: Replaced western blotting of CerS1 with a commercial sandwich ELISA due to weak antibody staining with recombinant CerS1 protein
Novel therapeutics for treating pancreatic cancer · Imperial
Considered and rejected
Considered and rejected: Abandoned western blotting for ICAM-1 and VCAM-1 detection in hPAECs due to antibody failure, replacing the method with flow cytometry.
Assays suffer from non-specific background, sample degradation, and reproducibility issues
Blotting assays generated non-specific degradation bands, persistent high background, or excessive false-positive rates that obscured genuine biological signals. In other instances, protein degradation, high sample variability, or unreliable replicate outcomes led investigators to abandon blotting in favor of alternative assays.
Tried and failed
quantitative Western blotting of extracted cell lysates applied to lactate-treated parasite protein samples. Outcome: data insufficient. Reason: replicate samples were unusable for quantitative analysis
Histone Lactylation Dynamics in Plasmodium falciparum · Harvard
Lost to a baseline
Western blotting and viral plaque assays outperformed immunofluorescence and slot blotting for reliably quantifying cell type-dependent viral replication.
Chikungunya virus infection in neural cells: investiagting cell-type differences in replication dynamics and host responses · JScholarship
Considered and rejected
Considered and rejected: Abandoned western blotting for KIM-1 after adjustments failed to remove high background or yield bands; switched to ELISA
Considered and rejected
Considered and rejected: Abandoned western blot analysis for measuring collagen levels in ISMC lysates/supernatants due to inconsistent blot outcomes, switching to Sircol red assay.
Regulation of the intestinal smooth muscle cell phenotype by the antifibrotic drug nintedanib · Queens University Institutional Repository
Considered and rejected
Considered and rejected: Discarded exclusive reliance on single-protein commercial line blots due to high false-positivity rates compared to tissue indirect immunofluorescence assay screening.
Characterising Autoimmune Neurologic Disorders: Biomarker Identification and Clinical Phenotyping · Research Repository UCD
Tried and failed
Southern blot cleavage assay applied to plasmid DNA cleavage detection. Outcome: no signal. Reason: Non-specific degradation products appeared in negative control plasmids even without tissue extracts, obscuring specific cleavage.
Increasing age alters Z-DNA-induced genetic instability · UT Austin
Considered and rejected
Considered and rejected: Rejected Western blot protein screening for cell death toxin screens due to protein degradation; switched to IVTT-expressed DNA barcodes.
Microdroplet assay development for metabolic engineering and synthetic biology applications · UT Austin
Low endogenous target abundance falls below blotting detection thresholds in complex matrices
Endogenous proteins, excised exons, and non-coding RNAs were frequently undetectable when analyzed directly within whole cell lysates, serum, or whole organism extracts. The high complexity of crude matrices combined with low target concentrations routinely pushed signals beneath the detection limits of standard Western and Northern blots.
Tried and failed
immunoblotting with commercial polyclonal antibody applied to endogenous transmembrane protein detection. Outcome: no signal. Reason: antibody lacked sufficient sensitivity to detect low endogenous protein levels in whole cell lysate
Role of novel transmembrane protein 128 (TMEM128) in the regulation of NOX2 expression and ER Stress · Imperial
Tried and failed
western blotting of endogenously tagged protein applied to whole organism protein lysates. Outcome: no signal. Reason: Endogenous protein expression levels were likely below the detection threshold in whole organism lysates
SMOC-1: THE LON AND THE SMA OF IT · Cornell
Tried and failed
western blotting applied to low-abundance serum biomarker detection. Outcome: no signal. Reason: low target abundance and complex biological matrix interference prevented reliable protein transfer and detection
Development of a lateral flow device for neuroblastoma diagnosis · Imperial
Considered and rejected
Considered and rejected: Whole cell lysate western blotting using anti-His antibody-HRP failed to detect Rv3239c and Rv3728, prompting the switch to isolated membrane extractions.
Tried and failed
western blot for detecting targeted exon excision applied to conditional gene knockout validation. Outcome: no signal. Reason: insufficient signal or resolution to detect endogenous protein excision
Tried and failed
Northern blotting for low-abundance non-coding RNA applied to tRNA detection across growth conditions. Outcome: no signal. Reason: Expression levels were below the detection threshold across almost all tested growth conditions and species
Blotting methods demand excessive sample material that exceeds biological availability
Several electrophoresis and blotting protocols required large amounts of starting DNA or protein mass that could not be recovered from limited specimens. As a result, standard Southern and Western blotting workflows were rejected in favor of more sensitive microscale or amplification-based assays.
Considered and rejected
Considered and rejected: Rejected standard SDS-PAGE and western blotting for miniaturized sucrose gradient fractions from microfluidic chambers due to low protein yields, selecting dot blot analysis instead.
Commonalities between SMA and ALS: investigation of ribosome heterogeneity and translational defects · IRIS - UNITN - prod
Considered and rejected
Considered and rejected: Rejected Southern blot and flow-FISH for telomere length in large-scale studies in favor of qPCR due to DNA input requirements and labor constraints
Assessing relationships between discrimination and health: emphasis on measurement and methodology · Harvard
Considered and rejected
Considered and rejected: 2-D gel electrophoresis coupled with Southern blotting to visualize replication intermediates was rejected because it requires a large quantity of starting material unattainable from slow-growing SI colonies
Investigation of the Evolution and Escape Process of het-6 Non-Self Recognition in Neurospora crassa · Carleton University Institutional Repository
Considered and rejected
Considered and rejected: Rejected measuring biglycan and decorin protein levels in individual neonatal tendons via ELISA or Western blot due to low sensitivity and small tissue mass, relying instead on RT-qPCR mRNA expression.
Membrane transfer encounters heat accumulation, large protein resistance, and poor efficiency
Semi-dry transfer configurations often generated excessive heat or produced non-specific bands that required switching to tank wet transfers. Furthermore, very large high-molecular-weight proteins and complex blood samples exhibited poor transfer reliability onto blotting membranes.
Considered and rejected
Considered and rejected: Rejected western blotting as a clinical validation/detection method due to poor transfer reliability and low protein abundance in blood.
Development of a lateral flow device for neuroblastoma diagnosis · Imperial
Considered and rejected
Considered and rejected: 30-minute semi-dry transfer for MINAR1 Western blotting rejected in favor of 18-hour wet transfer due to non-specific banding and poor detection.
Molecular mechanisms of cardiovascular complications in kidney disease · OpenBU
Tried and failed
Western blot protein detection applied to high-molecular-weight proteins. Outcome: no signal. Reason: Technical difficulties transferring and detecting very large 350 kDa proteins
Considered and rejected
Considered and rejected: Semi-dry Western blot transfer was abandoned due to heat build-up and transfer failure, replaced with tank wet transfer
Structural analysis of APOLLO, a candidate apomixis factor · HARVEST
Macromolecular aggregation and incomplete denaturation cause electrophoretic artifacts
Hydrophobic proteins and excessively stable multimeric complexes aggregated or failed to fully dissociate, yielding streaks or gel entry blockages instead of distinct bands. Additionally, unresolved high-molecular-weight smears and insufficient band resolution limited the utility of gel electrophoresis for precise molecular sizing.
Tried and failed
preclearing, extended denaturation, reducing agents, and nuclease applied to RNA pull-down western blot lysates. Reason: failed to eliminate high-molecular-weight non-specific smearing
Molecular mechanisms for the post-transcriptional regulation of tissue factor expression · Imperial
Considered and rejected
Considered and rejected: Rejected Northern blotting for quantifying poly(A) site mutation effects due to insufficient resolution.
Transcript cleavage and polyadenylation in plants · ResearchWorks
Tried and failed
native gradient PAGE applied to hydrophobic outer membrane proteins. Reason: hydrophobic membrane protein aggregated at gel top instead of entering resolving pores
The interaction of glycosylated major outer membrane protein of Campylobacter jejuni with natural and synthetic ligands · University of Nottingham Repository
Considered and rejected
Considered and rejected: Rejected SDS-PAGE and Western blotting for quantitative streptavidin determination because streptavidin tetramers are excessively stable and fail to fully dissociate into uniform monomeric bands, leaving streaks across gels.
On the mechanisms of substrate translocation by the ABC transporter MsbA · Cambridge
Left open by the authors
Problems the authors named and did not get to.
Left open
Confirm the enrichment of IL-1B on a protein level using ELISA or western blot. Blocker: Requires wet lab equipment, biological samples/mice, and wet lab assays (ELISA/western blot).
Exploring the Role of Interleukin 1 Beta (IL-1B) in Immune Checkpoint Inhibitor-induced Colitis · Imperial
Left open
Develop a high-throughput assay to measure endoplasmic reticulum stress to replace standard Western blotting. Blocker: Requires wet lab equipment, cell cultures, and biological assay development reagents
Left open
Validate proteomics findings using western blot or cell-based experimental assays. Blocker: Requires a wet biology laboratory, biological reagents, and experimental assays (western blot).
Neutrophil biomechanical properties and immune function in health and inflammatory disease · Cambridge
Left open
Repeat western blot experiments on rat tissue samples using β-actin as the loading control instead of total protein normalization. Blocker: Requires wet lab facilities, tissue samples, and physical reagents to perform Western blotting.
THE EFFECTS OF ORAL ARGININE ON ITS METABOLIC PATHWAYS IN SPRAGUE-DAWLEY RATS · HARVEST
Left open
Analyse specified inflammatory markers and cytokines by ELISA and Western blot in PLA-stratified tissue samples. Blocker: Requires a wet lab, post-mortem tissue samples, and wet-lab assay equipment (ELISA/Western blot)
Left open
Perform Western blotting on harvested Gallus gallus intestinal and liver tissues to measure transporter protein abundance and functional activity. Blocker: Requires a wet lab, animal tissue samples, antibodies, and physical assay apparatus (Western blot equipment).
Left open
Characterize CRISPR/Cas9 knock-in efficiency and integration accuracy using sequencing and Southern blot assays. Blocker: Requires wet lab facilities, biological samples, and wet experimental equipment for Southern blotting and sequencing
Left open
Quantify total TERRA RNA reduction following TERRA ASO transfection in cancer cells using Northern blot analysis. Blocker: Requires a wet-lab environment, cell culture facilities, and reagents for Northern blotting and ASO transfection
Telomeric localization of the TElomeric Repeat-containing RNA TERRA impairs telomerase activity in human cancer cells · IRIS - UNITN - prod
Left open
Deliver anti-synuclein antibodies across the blood-brain barrier into a Parkinson's mouse model using transferrin-functionalized MC3 lipid nanoparticles. Blocker: Requires wet-lab lipid nanoparticle formulation, antibody bioconjugation, and in vivo Parkinson's mouse model experiments.
Left open
Apply transfer learning to object detection models to identify neurons, pTDP-43 inclusions, and Lewy bodies in neuropathology whole-slide images. Blocker: Requires specialized, expert-annotated digital neuropathology whole-slide image datasets for Lewy bodies and pTDP-43 inclusions.
Machine Learning in Digital Neuropathology: Towards a Large-Scale Analysis Platform for Federated Cohorts · Georgia Tech
Checking a claim in this area?
We can run the same search on any method or claim. If nothing turns up, we will say so, and that proves nothing on its own.