Mouse Leptin (LEP) ELISA Kit (KTE71186) — Application Scenarios for Obesity, Energy Balance, and Neuroendocrine Research
Leptin: The 16-kDa Hormone That Tells Your Brain to Stop Eating Leptin (LEP) is a 167-amino-acid, ~16-kDa adipokine secreted primarily by white adipose tissue in proportion to fat mass. It is the body's satiety signal — it travels through the bloodstream to the hypothalamus, where it suppresses appetite and increases energy expenditure by inhibiting NPY/AgRP neurons and activating POMC/CART neurons. When leptin signaling fails — as in ob/ob mice (leptin-deficient) or db/db mice (leptin receptor-deficient) — the result is hyperphagia, severe obesity, insulin resistance, and diabetes. But leptin is not just a metabolic hormone. It is a pleiotropic cytokine with roles in reproductive function (leptin is required for puberty and fertility), immune function (leptin modulates T cell responses), bone metabolism, and neuroendocrine regulation. In mouse models, leptin is the most widely measured adipokine — it is the first-line…
Mouse Lipopolysaccharides (LPS) ELISA Kit (KTE71161) — Product Review & Buying Guide for Sepsis and Gut Barrier Researchers
LPS: The 10–20 kDa Endotoxin That Turns a Mouse Into a Cytokine Factory Lipopolysaccharides (LPS, endotoxin) are the major structural component of the outer membrane of Gram-negative bacteria — and the single most potent activator of innate immunity known to biology. A picogram of LPS injected into a mouse triggers a full-blown cytokine storm; a milligram kills the animal within hours. LPS is the ligand for TLR4, the receptor that launched the field of innate immune sensing, and it is the standard tool for modeling sepsis, septic shock, acute lung injury, and systemic inflammation in rodents. But LPS is not just an experimental tool. It is a biologically relevant analyte in its own right: circulating LPS is the molecular signature of gut barrier failure ("leaky gut"), and it is elevated in metabolic…
Mouse Serine Protease 23 (PRSS23) ELISA Kit (KTE70637) — FAQ for Reproductive Biology and Cancer Researchers
Mouse PRSS23 ELISA Kit: Your Questions Answered Serine protease 23 (PRSS23) — also known as SIG13, SPUVE, or ZSIG13 — is a member of the trypsin family of serine proteases that has long been an enigma in the protease field. It was originally identified in umbilical endothelium and later linked to ovarian function, embryonic development, and cancer progression. Mouse studies found that PRSS23 expression decreases in the aging ovary and is associated with reproductive decline, while separate lines of evidence implicate it in tumor invasion and metastasis in several cancer types. Despite its growing biological importance, PRSS23 has been chronically under-measured. Most labs rely on qPCR or immunohistochemistry, and those that attempt protein quantification by Western blot quickly discover that PRSS23's low endogenous abundance and secreted nature make it a frustrating target. The Mouse Serine Protease 23 (PRSS23) ELISA…
Mouse Adiponectin (ADP) ELISA Kit (KTE70557) — Application Scenarios for Metabolic and Cardiovascular Research
Adiponectin: The Adipokine That Refuses to Follow the Rules Adiponectin (ADP, also known as ACRP30, AdipoQ, GBP28, or APM1) is the most paradoxical molecule in metabolic biology. It is secreted exclusively by differentiated adipocytes and circulates at high concentrations — yet unlike every other adipokine (leptin, resistin, TNF-α), adiponectin levels fall in obesity and insulin resistance. This inverse relationship is so robust that adiponectin has been proposed as a biomarker for metabolic health and a therapeutic target for type 2 diabetes. Structurally, adiponectin is a member of the defense collagen family (alongside C1q and mannose-binding lectin), with an N-terminal collagenous domain and a C-terminal globular domain[reference:0]. It exists in multiple oligomeric forms — trimers, hexamers, and high-molecular-weight (HMW) multimers — and the HMW form is the most biologically active with respect…
Mouse Acetylcholinesterase (ACHE) ELISA Kit — Technical Comparison & Buying Guide for Neuropharmacology and Toxicology Researchers
ACHE: The Enzyme That Erases the Brain's Most Important Signal Acetylcholinesterase (AChE, EC 3.1.1.7) is the serine hydrolase that terminates cholinergic neurotransmission by hydrolyzing acetylcholine into choline and acetate. It is one of the fastest enzymes in the human body — each AChE molecule can hydrolyze ~5,000 acetylcholine molecules per second — and it is the molecular target of some of the most consequential drugs and toxins in pharmacology: donepezil, galantamine, rivastigmine (Alzheimer's therapeutics), neostigmine (myasthenia gravis), and organophosphate nerve agents (sarin, soman, and agricultural insecticides). In mouse models, AChE is measured for two distinct purposes: to assess cholinergic tone in neurodegenerative disease models, and to evaluate enzyme inhibition in toxicology and drug development studies. But measuring AChE protein — rather than just enzymatic activity — has always been the harder…
Mouse Acetylcholine (ACh) ELISA Kit (KTE70539) — Technical Comparison & Buying Guide for Neuroscience and Autonomic Pharmacology Researchers
ACh: The 146-Da Cationic Neurotransmitter That Disappears in 60 Seconds Acetylcholine (ACh, C₇H₁₇NO₃⁺, ~146 Da) is the neurotransmitter that built modern neuroscience — and the one that most reliably destroys your assay reproducibility. ACh has a synaptic half-life of ~1 ms in vivo and ~30–60 seconds in a homogenate without acetylcholinesterase inhibition, because every brain, muscle, and intestinal sample carries endogenous AChE and butyrylcholinesterase that keep chewing through your analyte between harvest and assay[reference:37]. If you've run an APP/PS1 or 5XFAD cohort through a donepezil efficacy study, you've almost certainly lived this: your "donepezil 5 mg/kg × 28 d" group shows a 40% ACh rise on Monday, but a 12% rise (ns) when you re-run the same −80°C aliquots on Thursday[reference:38]. The legacy methods have structural…
Mouse 8-OHdG ELISA Kit (KTE70521) — FAQ for Oxidative Stress, Aging, and DNA Damage Researchers
Mouse 8-OHdG ELISA Kit: Your Questions Answered 8-Hydroxy-desoxyguanosine (8-OHdG) is the C8-hydroxylated product of ·OH radical attack on guanine — the most oxidation-prone of the four DNA bases. Once formed, 8-OHdG is either repaired by OGG1 in the base excision repair pathway, or if lesions accumulate beyond repair capacity, it mispairs with adenine during replication, producing G→T transversion mutations — the molecular substrate of aging, carcinogenesis, and neurodegeneration[reference:26]. 8-OHdG is the gold-standard circulating and urinary DNA oxidation biomarker because it is stable in urine and serum at −80°C for years, is excreted renally after OGG1 excision (so urinary 8-OHdG reflects cumulative whole-body DNA oxidation), and correlates with tissue 8-OHdG measured by IHC or Western blot but is 100× easier to collect longitudinally[reference:27]. But turning this biological relevance into…
Mouse Slit Homolog 3 (SLIT3) ELISA Kit (KTE70415) — Technical Comparison & Buying Guide for
SLIT3: The Secreted Axon-Guidance Cue That Refuses to Be Measured Studying SLIT3 in mouse models often feels like trying to catch smoke with your bare hands. This secreted glycoprotein, a member of the Slit family of axon guidance cues, dances between neurodevelopment, angiogenesis, and tumor microenvironment regulation — yet its low abundance and structural complexity make detection a messy business[reference:17]. The challenge boils down to three biological quirks that trip up 75% of labs: Glycosylation-induced epitope masking: SLIT3 is heavily O-glycosylated (up to 30% of its mass), and traditional lysis buffers (RIPA with SDS) strip these sugars, destroying antibody-binding sites[reference:18]. Cross-reactivity with SLIT1/SLIT2: All three Slit proteins share a conserved leucine-rich repeat (LRR) domain, yet most antibodies target the LRR, leading to 20–30% false positives in samples with mixed Slit expression (e.g.,…
Mouse Triglyceride (TG) ELISA Kit (KTE70365) — Product Review & Buying Guide for Metabolic Disease Researchers
TG: The Most Routine — and Most Frustrating — Assay in Your Metabolic Stack Triglycerides (TGs) are the primary form of stored energy in mammals, and their dysregulation sits at the center of obesity, insulin resistance, and non-alcoholic fatty liver disease (NAFLD) . In mouse models, serum TG is a core lipid panel metric, liver TG is the non-negotiable readout for NASH/steatosis models, and adipose TG tracks lipolysis and adipogenesis[reference:5]. Yet measuring TGs accurately remains a high-stakes challenge. The legacy GPO (glycerol phosphate oxidase) colorimetric method — the default since the 1970s — requires manual homogenization, organic solvent extraction, and 340/505 nm spectrophotometry, capping throughput at ~30 samples per batch[reference:6]. Worse, when your drug drops serum TG from 5 mmol/L to 1.2 mmol/L and your GPO kit's 1 mmol/L…
Mouse Sarcalumenin (SRL) ELISA Kit (KTE70256) — Technical Comparison & Buying Guide for Calcium-Handling and Muscle Physiology Researchers
SRL: The 160-kDa SR Glycoprotein Your Calcium-Handling Paper Forgot If you've ever recited the "big three" of sarcoplasmic reticulum (SR) biochemistry — RYR1 (calcium release), SERCA2a (calcium re-uptake), and calsequestrin (luminal buffer) — you've already made the omission that most skeletal and cardiac muscle papers make. Tucked into the longitudinal SR lumen and the non-junctional stretches of the terminal cisternae is a 160-kDa acidic N-glycosylated calcium-binding glycoprotein called Sarcalumenin (SRL) that buffers roughly 30–40% of the total exchangeable Ca²⁺ inside the SR lumen alongside calsequestrin[reference:0]. And SRL is not just a passive calcium sponge. It belongs to the TRAFAK-class dynamin-like GTPase superfamily, with annotated roles in endocytosis, store-operated calcium entry, and response to muscle activity — meaning it likely talks to SERCA2a and modulates how fast the SR lumen reloads after a twitch[reference:1]. The problem?…
